/* roulang page: index */
:root{
  --bg:#070B14;
  --bg-deep:#05090F;
  --panel:rgba(16,26,46,.55);
  --panel-solid:#0E1729;
  --line:rgba(148,178,224,.14);
  --line-soft:rgba(148,178,224,.09);
  --line-strong:rgba(42,223,200,.40);
  --brand:#2ADFC8;
  --brand-deep:#14A9C9;
  --accent:#FF8A3D;
  --text:#F2F6FF;
  --text-2:#9FB0CC;
  --text-3:#66748F;
  --radius-card:18px;
  --radius-lg:24px;
  --radius-btn:12px;
  --shadow-card:0 18px 48px rgba(1,6,18,.55);
  --shadow-glow:0 0 24px rgba(42,223,200,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

.section{padding:56px 0}
@media (min-width:768px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:44px 0}
@media (min-width:768px){.section-tight{padding:56px 0}}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  height:70px;
  display:flex;align-items:center;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.78);
  border-bottom-color:var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.nav-wrap{
  width:100%;max-width:1220px;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
@media (min-width:768px){.nav-wrap{padding:0 24px}}
@media (min-width:1024px){.nav-wrap{padding:0 32px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;position:relative;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  border-radius:10px;
  box-shadow:0 0 18px rgba(42,223,200,.35);
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;
  border:2px solid rgba(5,18,26,.72);border-radius:4px;
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:-.01em;color:#fff}
.nav-links{display:none;align-items:center;gap:6px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 12px;
  font-size:15px;color:var(--text-2);
  border-radius:999px;
  transition:color 200ms var(--ease),background 200ms var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:16px;height:2px;border-radius:2px;
  background:var(--brand);transform:translateX(-50%) scaleX(0);
  transition:transform 220ms var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{
  color:var(--brand);
  background:rgba(42,223,200,.12);
}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px}
.version-chip{
  display:none;
  font-size:12px;line-height:1;padding:6px 10px;
  color:var(--accent);
  border:1px solid rgba(255,138,61,.45);
  border-radius:999px;
  letter-spacing:.02em;
}
@media (min-width:1024px){.version-chip{display:inline-block}}
.nav-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;color:var(--text);
}
@media (min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(3,7,14,.6);
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:95;
  width:86%;max-width:360px;
  background:rgba(7,11,20,.97);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform 260ms var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  height:70px;padding:0 18px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--text-2);
}
.drawer-nav{padding:12px 10px;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;
  height:48px;padding:0 14px;border-radius:12px;
  font-size:16px;color:var(--text-2);
  border-left:3px solid transparent;
}
.drawer-nav a:hover{background:rgba(42,223,200,.07);color:var(--text)}
.drawer-nav a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(42,223,200,.08)}
.drawer-foot{padding:16px 18px 22px;border-top:1px solid var(--line)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:16px;font-weight:700;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),border-color 220ms var(--ease),color 220ms var(--ease),filter 220ms var(--ease);
  text-align:center;
}
.btn-primary{
  color:#05121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 10px 26px rgba(42,223,200,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(42,223,200,.42);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{
  color:var(--text);
  background:transparent;
  border:1px solid rgba(159,176,204,.28);
}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(42,223,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:15px;font-weight:600;
  transition:color 200ms var(--ease);
}
.link-arrow span{transition:transform 200ms var(--ease)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}
.link-arrow:hover span{transform:translateX(3px)}

/* ---------- chips / badges ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;line-height:1.5;
  color:var(--brand);background:rgba(42,223,200,.12);
  border:1px solid rgba(42,223,200,.22);
}
.chip-accent{color:var(--accent);background:rgba(255,138,61,.1);border-color:rgba(255,138,61,.28)}
.chip-soft{color:var(--text-2);background:rgba(148,178,224,.08);border-color:var(--line)}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:120px 0 64px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(58% 58% at 16% 26%, rgba(42,223,200,.16), transparent 70%),
    linear-gradient(180deg, rgba(7,11,20,.86) 0%, rgba(7,11,20,.92) 62%, #070B14 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg, rgba(255,255,255,.6) 0 1px, transparent 1px 13px);
  opacity:.045;
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;gap:44px}
@media (min-width:1024px){
  .hero{padding:150px 0 88px}
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center}
}
.platform-badges{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px}
.platform-badges .dot{width:5px;height:5px;border-radius:50%;background:var(--accent);display:inline-block}
.hero h1{
  font-size:clamp(30px,4.6vw,54px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  max-width:34em;
  color:var(--text-2);
  font-size:17px;
  line-height:1.8;
  margin-bottom:26px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
@media (max-width:639px){.hero-cta .btn{width:100%}}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
}
.hero-meta i{font-style:normal;color:var(--text-3)}
.hero-visual{position:relative;display:flex;justify-content:center}
.screen-card{
  position:relative;
  width:100%;max-width:330px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(42,223,200,.35);
  background:var(--panel);
  padding:10px;
  box-shadow:var(--shadow-card),0 0 34px rgba(42,223,200,.18);
  transform:rotate(3.5deg);
  transition:transform 320ms var(--ease);
}
.screen-card:hover{transform:rotate(1.5deg) translateY(-4px)}
.screen-card img{
  width:100%;aspect-ratio:3/4;object-fit:cover;
  border-radius:16px;
}
.float-score{
  position:absolute;right:-6px;bottom:-16px;
  display:flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:14px;
  background:rgba(14,23,41,.92);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.float-score strong{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums}
.float-score .stars{color:var(--accent);font-size:13px;letter-spacing:1px}
.float-score small{display:block;font-size:11px;color:var(--text-3);line-height:1.3}

/* ---------- metrics ---------- */
.metrics-band{
  border:1px solid var(--line);
  background:rgba(16,26,46,.42);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:6px;
}
.metrics-grid{display:grid;grid-template-columns:repeat(2,1fr)}
@media (min-width:900px){.metrics-grid{grid-template-columns:repeat(4,1fr)}}
.metric{
  padding:20px 18px;text-align:center;
  border-bottom:1px solid var(--line-soft);
}
.metric:nth-child(odd){border-right:1px solid var(--line-soft)}
.metric:nth-last-child(-n+2){border-bottom:0}
@media (min-width:900px){
  .metric{border-bottom:0;border-right:1px solid var(--line-soft)}
  .metric:last-child{border-right:0}
  .metric:nth-child(odd){border-right:1px solid var(--line-soft)}
}
.metric-num{
  font-size:clamp(28px,4vw,44px);
  font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.metric-label{font-size:13px;color:var(--text-3);margin-top:6px}

/* ---------- section head ---------- */
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px;margin-bottom:34px;
}
.section-head h2{
  font-size:clamp(24px,3vw,38px);
  line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.section-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:56ch}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:10px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand);display:inline-block}

/* ---------- value blocks ---------- */
.value-block{
  display:grid;gap:28px;align-items:center;
  border:1px solid var(--line);
  background:rgba(16,26,46,.4);
  border-radius:var(--radius-lg);
  padding:26px;
}
@media (min-width:900px){
  .value-block{grid-template-columns:1fr 1fr;gap:44px;padding:34px}
  .value-block.reverse .value-media{order:-1}
}
.value-block + .value-block{margin-top:24px}
.value-icon{
  width:46px;height:46px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(42,223,200,.12);color:var(--brand);font-size:20px;margin-bottom:16px;
}
.value-block h3{font-size:21px;font-weight:600;margin-bottom:12px}
.value-block p{color:var(--text-2);font-size:15.5px;line-height:1.85;margin-bottom:18px}
.value-list{display:grid;gap:8px;margin-bottom:20px}
.value-list li{
  position:relative;padding-left:18px;
  color:var(--text-2);font-size:15px;
}
.value-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:2px;background:var(--brand);opacity:.85;
}
.value-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:16px;border:1px solid var(--line);
}

/* ---------- shots carousel ---------- */
.shots-wrap{position:relative}
.shots{
  display:flex;gap:18px;
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 2px 18px;
  scrollbar-width:none;
}
.shots::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 82%;scroll-snap-align:center;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--panel-solid);
  padding:10px;
}
@media (min-width:640px){.shot{flex:0 0 54%}}
@media (min-width:1024px){.shot{flex:0 0 31.5%}}
.shot img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:12px}
.shot figcaption{padding:12px 6px 4px}
.shot figcaption strong{display:block;font-size:16px;font-weight:600}
.shot figcaption span{display:block;font-size:13.5px;color:var(--text-3);margin-top:4px}
.shots-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:6px}
.shots-nav{display:flex;gap:10px}
.shot-btn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--text-2);
  transition:border-color 200ms var(--ease),color 200ms var(--ease),background 200ms var(--ease);
}
.shot-btn:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(42,223,200,.08)}
.dots{display:flex;gap:8px}
.dot-btn{
  width:9px;height:9px;border-radius:50%;
  background:rgba(148,178,224,.28);
  transition:background 200ms var(--ease),width 200ms var(--ease);
}
.dot-btn.is-active{background:var(--brand);width:22px;border-radius:999px}

/* ---------- spec + platform ---------- */
.split-grid{display:grid;gap:28px}
@media (min-width:1024px){.split-grid{grid-template-columns:1fr 1fr;gap:40px;align-items:start}}
.spec-list{display:grid;gap:0}
@media (min-width:640px){.spec-list{grid-template-columns:1fr 1fr;column-gap:32px}}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:14px;
  padding:12px 0;
  border-bottom:1px dashed var(--line);
}
.spec-row dt{font-size:12.5px;color:var(--text-3);flex-shrink:0}
.spec-row dd{margin:0;font-size:15px;color:var(--text);text-align:right}
.spec-cards{display:grid;gap:16px;margin-top:22px}
@media (min-width:640px){.spec-cards{grid-template-columns:1fr 1fr}}
.spec-card{
  border:1px solid var(--line);
  background:rgba(16,26,46,.42);
  border-radius:16px;padding:20px;
}
.spec-card.recommended{border-color:rgba(42,223,200,.4);box-shadow:0 0 0 1px rgba(42,223,200,.12) inset}
.spec-card h4{font-size:16px;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.spec-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.platform-grid{display:grid;gap:14px}
@media (min-width:640px){.platform-grid{grid-template-columns:1fr 1fr}}
.platform-card{
  border:1px solid var(--line);
  background:rgba(16,26,46,.42);
  border-radius:16px;padding:20px;
  transition:border-color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.platform-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-card)}
.platform-card .p-ico{
  width:40px;height:40px;border-radius:11px;
  background:rgba(42,223,200,.12);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;margin-bottom:12px;
}
.platform-card h4{font-size:16px;font-weight:600;margin-bottom:6px}
.platform-card p{font-size:13.5px;color:var(--text-3);line-height:1.7}

/* ---------- reviews ---------- */
.reviews{
  columns:1;column-gap:20px;
}
@media (min-width:768px){.reviews{columns:2}}
.review{
  break-inside:avoid;
  border:1px solid var(--line);
  background:rgba(16,26,46,.45);
  border-radius:var(--radius-card);
  padding:22px;margin-bottom:20px;
  transition:border-color 220ms var(--ease),transform 220ms var(--ease);
}
.review:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.review .stars{color:var(--accent);font-size:14px;letter-spacing:2px;margin-bottom:10px}
.review p{font-size:15px;color:var(--text-2);line-height:1.85}
.review-foot{display:flex;align-items:center;gap:12px;margin-top:16px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;font-weight:700;font-size:15px;
}
.review-foot strong{display:block;font-size:14.5px;font-weight:600;line-height:1.5}
.review-foot small{display:block;font-size:12px;color:var(--text-3);line-height:1.5}

/* ---------- download block ---------- */
.download-block{
  position:relative;
  border:1px solid rgba(42,223,200,.28);
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(42,223,200,.14), transparent 70%),
    rgba(14,23,41,.75);
  border-radius:var(--radius-lg);
  padding:40px 24px;
  text-align:center;
  overflow:hidden;
}
@media (min-width:768px){.download-block{padding:56px 40px}}
.download-block h2{font-size:clamp(24px,3vw,36px);line-height:1.28;font-weight:700;margin-bottom:12px}
.download-block > p{color:var(--text-2);font-size:15.5px;max-width:52ch;margin:0 auto 28px}
.dl-group{display:grid;gap:12px;max-width:720px;margin:0 auto}
@media (min-width:640px){.dl-group{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.dl-group{grid-template-columns:repeat(4,1fr)}}
.dl-btn{
  display:flex;align-items:center;gap:10px;
  min-height:64px;padding:10px 16px;border-radius:14px;
  border:1px solid var(--line);
  background:rgba(9,15,28,.7);
  text-align:left;
  transition:border-color 220ms var(--ease),transform 220ms var(--ease),background 220ms var(--ease);
}
.dl-btn:hover{border-color:var(--line-strong);transform:translateY(-2px);background:rgba(42,223,200,.07)}
.dl-btn .dl-ico{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(42,223,200,.12);color:var(--brand);font-size:14px;
}
.dl-btn strong{display:block;font-size:14.5px;font-weight:600;line-height:1.4}
.dl-btn small{display:block;font-size:11.5px;color:var(--text-3);line-height:1.4}
.dl-btn.is-primary{
  border-color:transparent;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;
  box-shadow:0 12px 30px rgba(42,223,200,.22);
}
.dl-btn.is-primary .dl-ico{background:rgba(5,18,26,.16);color:#05121A}
.dl-btn.is-primary small{color:rgba(5,18,26,.72)}
.dl-btn.is-primary:hover{filter:brightness(1.05);box-shadow:0 0 34px rgba(42,223,200,.4)}
.qr-card{
  display:inline-flex;align-items:center;gap:14px;
  margin-top:26px;padding:14px 18px;border-radius:16px;
  border:1px solid var(--line);background:rgba(7,11,20,.6);
  text-align:left;
}
.qr-box{
  width:86px;height:86px;border-radius:10px;
  background:
    repeating-linear-gradient(0deg, rgba(242,246,255,.85) 0 5px, transparent 5px 10px),
    repeating-linear-gradient(90deg, rgba(242,246,255,.85) 0 5px, transparent 5px 10px),
    #fff;
  border:4px solid #fff;
  flex-shrink:0;
}
.qr-card strong{display:block;font-size:14.5px;font-weight:600;margin-bottom:4px}
.qr-card small{display:block;font-size:12.5px;color:var(--text-3);line-height:1.6}

/* ---------- news ---------- */
.news-grid{display:grid;gap:20px}
@media (min-width:768px){.news-grid{grid-template-columns:1fr 1fr}}
.news-card{
  display:flex;flex-direction:column;
  border:1px solid var(--line);
  background:rgba(16,26,46,.45);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-card)}
.news-card:hover h3{color:var(--brand)}
.news-thumb{overflow:hidden}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 420ms var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;gap:10px}
.news-body h3{
  font-size:17.5px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color 200ms var(--ease);
}
.news-body p{
  font-size:14.5px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:10px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.news-foot .arrow{color:var(--brand);transition:transform 200ms var(--ease)}
.news-card:hover .news-foot .arrow{transform:translateX(4px)}
@media (min-width:768px){
  .news-card--wide{grid-column:span 2;flex-direction:row}
  .news-card--wide .news-thumb{flex:0 0 46%}
  .news-card--wide .news-thumb img{height:100%;aspect-ratio:16/10}
  .news-card--wide .news-body{padding:26px;gap:12px}
  .news-card--wide .news-body h3{font-size:22px;-webkit-line-clamp:2}
}
@media (max-width:767px){
  .news-card--wide .news-thumb img{aspect-ratio:16/9}
}
.empty-state{
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:rgba(16,26,46,.3);
  text-align:center;padding:32px;
}
.empty-state .e-ico{font-size:42px;color:rgba(42,223,200,.4);line-height:1}
.empty-state strong{font-size:16px;font-weight:600}
.empty-state span{font-size:14px;color:var(--text-3)}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);
  background:rgba(16,26,46,.45);
  border-radius:14px;
  margin-bottom:10px;
  overflow:hidden;
  position:relative;
  transition:border-color 220ms var(--ease),background 220ms var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);opacity:0;transition:opacity 220ms var(--ease);
}
.faq-item.is-open{border-color:rgba(42,223,200,.34);background:rgba(16,26,46,.62)}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-icon{
  flex-shrink:0;color:var(--brand);font-size:20px;line-height:1;
  transition:transform 220ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-a p{padding:0 18px 18px;font-size:15px;color:var(--text-2);line-height:1.78}

/* ---------- tail cta ---------- */
.tail-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:26px 24px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:
    radial-gradient(70% 120% at 0% 50%, rgba(42,223,200,.12), transparent 70%),
    rgba(16,26,46,.5);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
@media (min-width:768px){.tail-cta{padding:32px 36px}}
.tail-cta h2{font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.4;margin-bottom:6px}
.tail-cta p{font-size:14.5px;color:var(--text-2)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:52px 0 0;
  margin-top:0;
}
.footer-grid{display:grid;gap:34px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:4fr 3fr 3fr 2fr;gap:40px}}
.footer-brand p{font-size:14px;color:var(--text-3);line-height:1.8;margin-top:14px;max-width:32ch}
.footer-brand .version-chip{display:inline-block;margin-top:16px}
.footer-col h3{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:4px}
.footer-col a{
  display:inline-flex;align-items:center;min-height:44px;
  font-size:14px;color:var(--text-3);
  transition:color 200ms var(--ease);
}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-qr{display:flex;flex-direction:column;gap:10px}
.footer-qr .qr-box{width:120px;height:120px;border-radius:12px}
.footer-qr small{font-size:12px;color:var(--text-3);line-height:1.6;max-width:150px}
.footer-bottom{
  margin-top:40px;padding:20px 0 26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .risk{font-size:12px;color:var(--text-3)}

@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg:#070B14;
  --bg-deep:#05090F;
  --panel:rgba(16,26,46,.55);
  --panel-solid:#0E1729;
  --line:rgba(148,178,224,.14);
  --line-strong:rgba(42,223,200,.40);
  --brand:#2ADFC8;
  --brand-deep:#14A9C9;
  --accent:#FF8A3D;
  --text:#F2F6FF;
  --text-2:#9FB0CC;
  --text-3:#66748F;
  --radius:18px;
  --radius-lg:24px;
  --shadow-card:0 18px 48px rgba(1,6,18,.55);
  --shadow-glow:0 0 24px rgba(42,223,200,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 24px;}}
@media (min-width:1024px){.container{padding:0 32px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.78);
  backdrop-filter:saturate(140%) blur(14px);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
  border-bottom-color:var(--line);
}
.nav-wrap{
  max-width:1220px;margin:0 auto;padding:0 20px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
@media (min-width:1024px){.nav-wrap{height:72px;padding:0 32px;}}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:26px;height:26px;display:inline-block;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
  box-shadow:0 0 16px rgba(42,223,200,.35);
}
.brand-name{font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em;}
@media (min-width:1024px){.brand-name{font-size:18px;}}
.nav-links{display:none;align-items:center;gap:22px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:8px 2px;
  transition:color .22s var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--brand);transform:translateX(-50%);
  transition:width .22s var(--ease);border-radius:2px;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{width:16px;}
.nav-link.is-active{
  color:var(--brand);background:rgba(42,223,200,.12);
  padding:7px 14px;border-radius:999px;
}
.nav-link.is-active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:10px;}
.version-chip{
  font-size:12px;color:var(--accent);border:1px solid rgba(255,138,61,.45);
  border-radius:999px;padding:2px 10px;line-height:1.6;letter-spacing:.02em;white-space:nowrap;
}
.nav-toggle{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:rgba(16,26,46,.5);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);}
.nav-toggle span{position:relative;width:18px;height:2px;background:var(--text);border-radius:2px;display:block;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
@media (min-width:1024px){.nav-toggle{display:none;}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;font-size:15px;font-weight:700;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
  border:1px solid transparent;line-height:1;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px;}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(42,223,200,.42);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{
  background:transparent;border-color:rgba(159,176,204,.28);color:var(--text);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(42,223,200,.08);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;
}
.link-arrow .arw{transition:transform .22s var(--ease);}
.link-arrow:hover .arw{transform:translateX(3px);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}

/* 抽屉 */
.nav-overlay{
  position:fixed;inset:0;z-index:90;background:rgba(3,7,14,.66);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  backdrop-filter:blur(4px);
}
.nav-overlay.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:100;width:86%;max-width:360px;
  background:rgba(7,11,20,.97);backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:18px 0 0;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:0 20px 14px;border-bottom:1px solid var(--line);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;color:var(--text-2);
}
.drawer-close:hover{border-color:var(--line-strong);color:var(--text);}
.drawer-links{flex:1;overflow-y:auto;padding:10px 0;}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 22px;font-size:15px;
  color:var(--text-2);border-left:3px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.drawer-links a:hover{color:var(--text);background:rgba(42,223,200,.06);}
.drawer-links a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(42,223,200,.08);}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}

/* ---------- 页面顶部光晕 ---------- */
.page-glow{
  position:absolute;top:0;left:0;right:0;height:520px;pointer-events:none;z-index:0;
  background:
    radial-gradient(60% 62% at 20% 12%, rgba(42,223,200,.14), transparent 68%),
    radial-gradient(48% 48% at 86% 0%, rgba(20,169,201,.10), transparent 70%);
}
.page-glow::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(45deg,rgba(255,255,255,.045) 0 1px,transparent 1px 9px);
  opacity:.35;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 88%);
  mask-image:linear-gradient(180deg,#000,transparent 88%);
}
main{position:relative;padding-top:88px;z-index:1;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);padding:10px 0 22px;
}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--text-3);opacity:.6;}
.breadcrumb .current{
  color:var(--text-2);max-width:min(52vw,340px);overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章头 ---------- */
.article-head{padding-bottom:22px;border-bottom:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;
  color:#062522;background:rgba(42,223,200,.9);border-radius:999px;padding:4px 12px;line-height:1.6;
}
.article-head h1{
  margin:16px 0 0;font-size:clamp(24px,3.6vw,34px);line-height:1.32;font-weight:800;
  letter-spacing:-.01em;color:#fff;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;
  margin-top:16px;font-size:13px;color:var(--text-3);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.7;}
.article-meta .num{font-variant-numeric:tabular-nums;}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:1fr;gap:36px;padding:32px 0 8px;}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:44px;}
}
.article-main{min-width:0;}

/* ---------- 正文排版 ---------- */
.article-body{
  color:#C9D6EA;font-size:16px;line-height:1.9;word-break:break-word;max-width:720px;
}
@media (min-width:768px){.article-body{font-size:16.5px;}}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  font-size:23px;line-height:1.45;color:#fff;font-weight:700;
  margin:34px 0 12px;padding-left:12px;border-left:3px solid var(--brand);
}
.article-body h3{font-size:19px;line-height:1.5;color:#fff;font-weight:600;margin:26px 0 10px;}
.article-body h4{font-size:17px;color:#fff;font-weight:600;margin:20px 0 8px;}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:22px;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body ul li::marker{color:var(--brand);}
.article-body ol li::marker{color:var(--brand);font-variant-numeric:tabular-nums;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#6ff2df;}
.article-body strong{color:#fff;font-weight:700;}
.article-body blockquote{
  margin:22px 0;padding:16px 18px;border-left:3px solid var(--brand);
  background:rgba(42,223,200,.06);border-radius:0 12px 12px 0;color:#DCE7F7;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;border:1px solid var(--line);margin:20px auto;height:auto;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0;}
.article-body code{
  font-size:14px;background:rgba(148,178,224,.12);border-radius:6px;padding:2px 6px;color:#DCE7F7;
}

/* ---------- 文末 ---------- */
.article-foot{margin-top:36px;padding-top:24px;border-top:1px solid var(--line);max-width:720px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.tag-pill{
  font-size:13px;color:var(--text-2);border:1px solid var(--line);border-radius:999px;
  padding:5px 14px;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tag-pill:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(42,223,200,.07);}
.article-foot-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 侧栏 ---------- */
.article-side{min-width:0;}
.side-stack{display:flex;flex-direction:column;gap:18px;}
@media (min-width:1024px){
  .side-stack{position:sticky;top:96px;}
}
.side-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.side-title{
  font-size:13px;font-weight:700;color:var(--text);letter-spacing:.06em;
  display:flex;align-items:center;gap:8px;margin-bottom:12px;
}
.side-title::before{
  content:"";width:3px;height:14px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:44vh;overflow-y:auto;}
.toc-link{
  display:block;font-size:14px;color:var(--text-2);padding:7px 10px;border-radius:9px;
  border-left:2px solid transparent;line-height:1.55;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-link.is-sub{padding-left:22px;font-size:13px;color:var(--text-3);}
.toc-link:hover{color:var(--text);background:rgba(42,223,200,.07);}
.toc-link.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(42,223,200,.09);}

.rel-item{
  display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);
  transition:transform .2s var(--ease);
}
.rel-item:last-child{border-bottom:0;padding-bottom:0;}
.rel-item:first-child{padding-top:0;}
.rel-item:hover{transform:translateX(3px);}
.rel-thumb{
  width:64px;height:64px;flex-shrink:0;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);background:var(--panel-solid);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;}
.rel-text{min-width:0;}
.rel-text h4{
  font-size:14px;line-height:1.55;color:var(--text);font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-item:hover h4{color:var(--brand);}
.rel-text span{font-size:12px;color:var(--text-3);}
.side-dl{
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(42,223,200,.16), transparent 62%),
    var(--panel-solid);
  border:1px solid var(--line-strong);border-radius:var(--radius);padding:20px;
}
.side-dl h3{font-size:16px;font-weight:700;color:#fff;}
.side-dl p{font-size:13.5px;color:var(--text-2);margin-top:8px;line-height:1.75;}
.side-dl .btn{width:100%;margin-top:14px;}
.side-dl small{display:block;margin-top:10px;font-size:12px;color:var(--text-3);}

/* ---------- 无内容提示 ---------- */
.empty-box{
  min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;text-align:center;border:1px dashed var(--line);border-radius:var(--radius);
  background:rgba(16,26,46,.35);padding:36px 20px;
}
.empty-box .ico{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:rgba(42,223,200,.12);color:var(--brand);font-size:22px;
}
.empty-box h2{font-size:18px;font-weight:700;color:#fff;}
.empty-box p{font-size:14px;color:var(--text-3);}

/* ---------- 相关推荐 ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:28px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;color:#fff;letter-spacing:-.01em;}
.section-head p{font-size:14px;color:var(--text-2);margin-top:8px;}
.rel-grid{display:grid;grid-template-columns:1fr;gap:18px;}
@media (min-width:640px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.rel-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel-solid);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.rel-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow-card);}
.rel-card figure{aspect-ratio:16/9;overflow:hidden;background:var(--bg-deep);}
.rel-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.rel-card:hover figure img{transform:scale(1.04);}
.rel-card .body{padding:18px;display:flex;flex-direction:column;gap:10px;}
.rel-card h3{font-size:16px;font-weight:600;line-height:1.6;color:var(--text);}
.rel-card:hover h3{color:var(--brand);}
.rel-card p{font-size:13.5px;line-height:1.75;color:var(--text-2);}
.rel-card .meta{font-size:12px;color:var(--text-3);display:flex;align-items:center;gap:8px;}

/* ---------- CTA 横条 ---------- */
.cta-band{
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:
    radial-gradient(80% 140% at 8% 0%, rgba(42,223,200,.16), transparent 60%),
    linear-gradient(180deg, rgba(16,26,46,.85), rgba(9,15,28,.9));
  padding:30px 24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
@media (min-width:768px){.cta-band{padding:36px 40px;}}
.cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:700;color:#fff;}
.cta-band p{font-size:14px;color:var(--text-2);margin-top:8px;max-width:46em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (max-width:519px){
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-deep);border-top:1px solid var(--line);margin-top:64px;
  padding:48px 0 0;position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:4fr 3fr 3fr 2fr;gap:36px;}}
.footer-brand p{font-size:13.5px;color:var(--text-2);margin-top:14px;line-height:1.8;max-width:30em;}
.footer-brand .version-chip{display:inline-block;margin-top:14px;}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:4px;}
.footer-col a{
  display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.footer-qr .qr-box{
  width:120px;height:120px;border-radius:14px;border:1px solid var(--line);
  background:
    repeating-linear-gradient(0deg,rgba(148,178,224,.16) 0 2px,transparent 2px 8px),
    repeating-linear-gradient(90deg,rgba(148,178,224,.16) 0 2px,transparent 2px 8px),
    var(--panel-solid);
}
.footer-qr small{display:block;margin-top:12px;font-size:12px;color:var(--text-3);line-height:1.7;max-width:16em;}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;align-items:center;
  font-size:12px;color:var(--text-3);
}
.footer-bottom .risk{max-width:56em;line-height:1.7;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg:#070B14;
  --bg-deep:#05090F;
  --panel:rgba(16,26,46,0.55);
  --panel-solid:#0E1729;
  --line:rgba(148,178,224,0.14);
  --line-strong:rgba(42,223,200,0.40);
  --brand:#2ADFC8;
  --brand-deep:#14A9C9;
  --accent:#FF8A3D;
  --text:#F2F6FF;
  --text-2:#9FB0CC;
  --text-3:#66748F;
  --radius:18px;
  --radius-lg:24px;
  --radius-sm:12px;
  --shadow-card:0 18px 48px rgba(1,6,18,0.55);
  --shadow-glow:0 0 24px rgba(42,223,200,0.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;line-height:1.28;letter-spacing:-0.01em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,0.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  max-width:1220px;margin:0 auto;padding:0 20px;
  height:70px;display:flex;align-items:center;gap:16px;
}
@media(min-width:768px){.nav-wrap{padding:0 24px;gap:20px}}
@media(min-width:1024px){.nav-wrap{padding:0 32px}}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  box-shadow:var(--shadow-glow);
}
.brand-name{font-size:17.5px;font-weight:700;color:var(--text);letter-spacing:.01em}
.nav-links{display:none;align-items:center;gap:2px;margin:0 auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:40px;padding:0 12px;border-radius:999px;
  font-size:15px;color:var(--text-2);
  transition:color .22s var(--ease),background .22s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:0;height:2px;background:var(--brand);border-radius:2px;
  transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:16px}
.nav-link.is-active{color:var(--brand);background:rgba(42,223,200,.12)}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.version-chip{
  display:none;font-size:12px;font-variant-numeric:tabular-nums;
  color:var(--accent);border:1px solid rgba(255,138,61,.45);
  padding:2px 10px;border-radius:999px;line-height:1.7;
}
@media(min-width:640px){.version-chip{display:inline-block}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(16,26,46,.5);
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(42,223,200,.08)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
@media(min-width:1024px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;box-shadow:0 10px 30px rgba(42,223,200,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(42,223,200,.42);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{border:1px solid rgba(159,176,204,.28);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--line-strong);background:rgba(42,223,200,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:color .2s var(--ease);
}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover span{transform:translateX(3px)}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- mobile drawer ---------- */
.nav-mask{
  position:fixed;inset:0;z-index:70;background:rgba(3,6,12,.62);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:86%;max-width:360px;height:100%;
  display:flex;flex-direction:column;
  padding:18px 18px 24px;
  background:rgba(7,11,20,.97);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-left:1px solid var(--line);
  transform:translateX(101%);
  transition:transform .28s var(--ease);
}
body.nav-open .nav-mask{opacity:1;pointer-events:auto}
body.nav-open .nav-drawer{transform:translateX(0)}
body.nav-open{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:20px;color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.drawer-close:hover{color:var(--brand);border-color:var(--line-strong)}
.drawer-links{display:flex;flex-direction:column;padding:10px 0;gap:2px}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.drawer-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.drawer-links a.is-active{color:var(--brand);background:rgba(42,223,200,.10);box-shadow:inset 3px 0 0 var(--brand)}
.drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ---------- breadcrumb ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 0;font-size:13px;color:var(--text-3);
}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(102,116,143,.7)}
.breadcrumb .crumb-current{color:var(--text-2)}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:34px 0 40px;
  background:
    radial-gradient(58% 130% at 12% 6%, rgba(42,223,200,.15), transparent 62%),
    radial-gradient(46% 110% at 92% 0%, rgba(20,169,201,.10), transparent 60%),
    var(--bg);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg, rgba(255,255,255,.05) 0 1px, transparent 1px 9px);
  opacity:.10;
  -webkit-mask-image:linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image:linear-gradient(180deg, #000 0%, transparent 88%);
}
.page-hero .container{position:relative;z-index:1}
.hero-inner{display:grid;gap:24px;align-items:end}
@media(min-width:1024px){.hero-inner{grid-template-columns:minmax(0,1fr) auto;gap:40px}}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
  color:var(--brand);background:rgba(42,223,200,.12);border:1px solid rgba(42,223,200,.24);
}
.pill-accent{color:var(--accent);background:rgba(255,138,61,.10);border-color:rgba(255,138,61,.30)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,44px);font-weight:800;line-height:1.18;letter-spacing:-0.02em;
  max-width:22em;
}
.page-hero h1 .hl{
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{margin-top:14px;max-width:38em;font-size:16px;line-height:1.85;color:var(--text-2)}
.hero-aside{display:flex;flex-wrap:wrap;gap:12px}
.stat-pill{
  min-width:132px;padding:14px 16px;border-radius:16px;
  border:1px solid var(--line);background:var(--panel);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.stat-pill strong{
  display:block;font-size:28px;line-height:1.15;font-weight:800;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-pill span{display:block;margin-top:2px;font-size:12.5px;color:var(--text-3)}

/* ---------- section base ---------- */
.section{padding:48px 0}
@media(min-width:768px){.section{padding:64px 0}}
@media(min-width:1024px){.section{padding:80px 0}}
.section-tight{padding:36px 0}
@media(min-width:1024px){.section-tight{padding:52px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-head h2{font-size:clamp(23px,3vw,32px);font-weight:700}
.section-head p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:42em}
.eyebrow{
  display:inline-block;margin-bottom:10px;font-size:12.5px;font-weight:700;
  letter-spacing:.14em;color:var(--brand);text-transform:uppercase;
}

/* ---------- news layout ---------- */
.news-layout{display:grid;gap:22px}
@media(min-width:1024px){.news-layout{grid-template-columns:minmax(0,2.05fr) minmax(0,1fr);gap:26px;align-items:start}}
.lead-card{
  display:grid;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line);background:var(--panel-solid);
  box-shadow:var(--shadow-card);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.lead-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 22px 54px rgba(1,6,18,.62)}
.lead-media{position:relative}
.lead-media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.lead-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(7,11,20,.55));
}
.lead-body{padding:22px 22px 24px}
@media(min-width:768px){.lead-body{padding:26px 28px 28px}}
.lead-body h3{font-size:20px;font-weight:700;line-height:1.42;margin:10px 0 10px}
.lead-card:hover h3{color:var(--brand)}
.lead-body p{font-size:15px;color:var(--text-2)}
.card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.dot{width:4px;height:4px;border-radius:50%;background:rgba(102,116,143,.8)}
.mini-grid{display:grid;gap:16px;margin-top:18px}
@media(min-width:640px){.mini-grid{grid-template-columns:1fr 1fr}}
.mini-card{
  display:flex;gap:14px;padding:14px;border-radius:16px;
  border:1px solid var(--line);background:var(--panel-solid);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.mini-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.mini-card img{width:92px;height:92px;flex:0 0 auto;border-radius:12px;object-fit:cover}
.mini-card h4{font-size:15.5px;font-weight:600;line-height:1.5;margin:0 0 6px}
.mini-card:hover h4{color:var(--brand)}
.mini-card p{font-size:13.5px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card .card-meta{margin-top:8px;font-size:12px}

/* ---------- timeline ---------- */
.timeline{
  padding:20px 20px 8px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.timeline h3{font-size:16px;font-weight:700;margin-bottom:4px}
.timeline .timeline-sub{font-size:13px;color:var(--text-3);margin-bottom:18px}
.tl-item{position:relative;padding:0 0 20px 20px}
.tl-item::before{
  content:"";position:absolute;left:4px;top:9px;bottom:-2px;width:2px;
  background:linear-gradient(180deg,rgba(42,223,200,.65),rgba(42,223,200,0));
}
.tl-item:last-child::before{display:none}
.tl-item::after{
  content:"";position:absolute;left:0;top:6px;width:10px;height:10px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 10px rgba(42,223,200,.8);
}
.tl-date{font-size:12.5px;color:var(--accent);font-variant-numeric:tabular-nums}
.tl-text{font-size:14px;line-height:1.7;color:var(--text-2);margin-top:2px}

/* ---------- feature rows ---------- */
.feature-stack{display:grid;gap:20px}
.feature-row{
  display:grid;gap:20px;padding:20px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(16,26,46,.72),rgba(14,23,41,.42));
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
@media(min-width:768px){
  .feature-row{grid-template-columns:1fr 1fr;align-items:center;gap:28px;padding:24px}
  .feature-row.is-reverse .fr-media{order:2}
}
.feature-row:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.fr-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:14px;border:1px solid var(--line)}
.fr-text h3{font-size:20px;font-weight:700;margin-bottom:10px}
.fr-text p{font-size:15px;line-height:1.85;color:var(--text-2);margin-bottom:14px}
.icon-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;margin-bottom:14px;
  background:rgba(42,223,200,.12);color:var(--brand);
}
.icon-badge svg{width:22px;height:22px}

/* ---------- steps ---------- */
.steps{position:relative;margin-top:8px}
.steps::before{
  content:"";position:absolute;left:4px;top:8px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(42,223,200,0));
}
.step{position:relative;padding:0 0 24px 28px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 12px rgba(42,223,200,.85);
}
.step .num{font-size:12.5px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.step h3{font-size:17px;font-weight:600;margin:2px 0 6px}
.step p{font-size:15px;line-height:1.8;color:var(--text-2);max-width:46em}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;display:grid;gap:10px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:var(--panel);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:0 0 24px rgba(42,223,200,.14)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);background:rgba(42,223,200,.12);
  font-size:18px;line-height:1;transition:transform .22s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 18px 18px;font-size:15px;line-height:1.8;color:var(--text-2)}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- cta band ---------- */
.cta-band{
  display:grid;gap:20px;padding:24px;
  border-radius:var(--radius-lg);border:1px solid var(--line);
  background:
    radial-gradient(90% 180% at 0% 0%, rgba(42,223,200,.16), transparent 62%),
    var(--panel);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
@media(min-width:768px){.cta-band{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:30px 32px;gap:28px}}
.cta-band h2{font-size:clamp(21px,2.6vw,27px);font-weight:700}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text-2);max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:639px){.cta-actions .btn{width:100%}}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:44px 0 22px;
  margin-top:28px;
}
.footer-grid{display:grid;gap:30px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:28px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:4fr 3fr 3fr 2fr;gap:32px}}
.footer-brand p{margin:14px 0 14px;font-size:14px;line-height:1.8;color:var(--text-2);max-width:32em}
.footer-col h3{font-size:14px;font-weight:700;margin-bottom:12px;color:var(--text);letter-spacing:.04em}
.footer-col li a{
  display:inline-flex;align-items:center;min-height:36px;font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.footer-col li a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.qr-box{
  width:120px;height:120px;border-radius:14px;
  border:1px dashed rgba(42,223,200,.34);
  background:rgba(42,223,200,.06);
}
.footer-qr small{display:block;margin-top:10px;font-size:12px;color:var(--text-3);line-height:1.7;max-width:22em}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:32px;padding-top:18px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);line-height:1.8;
}
.footer-bottom .risk{max-width:52em}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
    --bg:#F4F8FD;
    --bg-soft:#EAF2FB;
    --panel:#FFFFFF;
    --panel-soft:#F7FBFF;
    --line:#DCE7F4;
    --line-strong:#12B8A6;
    --brand:#12B8A6;
    --brand-deep:#0B93A8;
    --brand-soft:#E7FAF7;
    --accent:#FF8A3D;
    --text:#0E1B2E;
    --text-2:#4A5B75;
    --text-3:#7C8CA6;
    --radius:18px;
    --radius-lg:24px;
    --shadow-card:0 14px 34px rgba(16,42,76,.08);
    --shadow-hover:0 22px 46px rgba(16,42,76,.14);
    --shadow-glow:0 12px 26px rgba(18,184,166,.30);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p,dl,dd{margin:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1220px;margin:0 auto;padding-left:20px;padding-right:20px;}
  @media(min-width:768px){.container{padding-left:24px;padding-right:24px;}}
  @media(min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(244,248,253,.86);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.94);
    border-bottom-color:var(--line);
    box-shadow:0 8px 24px rgba(16,42,76,.06);
  }
  .nav-wrap{
    max-width:1220px;margin:0 auto;height:68px;
    padding:0 20px;
    display:flex;align-items:center;gap:16px;
  }
  @media(min-width:768px){.nav-wrap{padding:0 24px;height:72px;}}
  @media(min-width:1024px){.nav-wrap{padding:0 32px;}}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px;}
  .brand-mark{
    width:28px;height:28px;border-radius:9px;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
    position:relative;
    box-shadow:0 6px 16px rgba(18,184,166,.35);
    clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
  }
  .brand-mark::after{
    content:"";position:absolute;inset:8px 8px auto 8px;height:3px;border-radius:2px;
    background:rgba(255,255,255,.92);
    box-shadow:0 6px 0 rgba(255,255,255,.62);
  }
  .brand-name{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
  .nav-links{display:none;align-items:center;gap:4px;margin-left:auto;}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;
    height:44px;padding:0 12px;border-radius:999px;
    font-size:15px;font-weight:500;color:var(--text-2);
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .nav-link:hover{color:var(--text);background:rgba(18,184,166,.08);}
  .nav-link.is-active{color:var(--brand-deep);background:var(--brand-soft);font-weight:700;}
  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
  @media(min-width:1024px){.nav-actions{margin-left:0;}}
  .version-chip{
    display:none;font-size:12px;font-weight:600;color:#B4600F;
    background:#FFF1E4;border:1px solid rgba(255,138,61,.42);
    padding:4px 10px;border-radius:999px;letter-spacing:.02em;
  }
  @media(min-width:640px){.version-chip{display:inline-block;}}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:48px;padding:0 24px;border-radius:12px;
    font-size:15px;font-weight:700;line-height:1.2;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;border-radius:11px;}
  .btn-primary{
    color:#04211F;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
    box-shadow:var(--shadow-glow);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(18,184,166,.40);}
  .btn-primary:active{transform:translateY(0);filter:brightness(.95);}
  .btn-ghost{
    color:var(--text);
    background:#FFFFFF;
    border:1px solid rgba(74,91,117,.24);
    box-shadow:0 4px 12px rgba(16,42,76,.05);
  }
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-deep);font-size:14px;font-weight:600;
    transition:gap .2s var(--ease),color .2s var(--ease);
  }
  .link-arrow:hover{gap:10px;text-decoration:underline;text-underline-offset:4px;}

  .nav-toggle{
    display:inline-flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);background:#FFFFFF;
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);position:relative;}
  .nav-toggle span::before,
  .nav-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
    transition:transform .2s var(--ease);
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  @media(min-width:1024px){
    .nav-links{display:flex;}
    .nav-toggle{display:none;}
  }

  /* 抽屉 */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(14,27,46,.42);
    opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:80;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .nav-drawer{
    position:fixed;top:0;right:0;z-index:90;
    width:86%;max-width:360px;height:100%;
    background:#FFFFFF;border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .28s var(--ease);
    display:flex;flex-direction:column;
    padding:16px 18px 20px;
    box-shadow:-18px 0 40px rgba(16,42,76,.14);
  }
  .nav-drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--line);}
  .drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;font-size:20px;color:var(--text-2);}
  .drawer-links{margin-top:8px;display:flex;flex-direction:column;}
  .drawer-links a{
    display:flex;align-items:center;height:48px;padding-left:12px;
    font-size:15px;color:var(--text-2);border-left:3px solid transparent;
    transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
  }
  .drawer-links a:hover{color:var(--text);background:var(--panel-soft);}
  .drawer-links a.is-active{color:var(--brand-deep);border-left-color:var(--brand);background:var(--brand-soft);font-weight:700;}
  .drawer-cta{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}
  .drawer-cta .btn{width:100%;}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    padding-top:20px;font-size:13px;color:var(--text-3);
  }
  .breadcrumb a{color:var(--text-2);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px;}
  .breadcrumb .sep{color:#B7C6DA;}
  .breadcrumb .current{color:var(--text);font-weight:600;}

  /* ---------- 分类页头 ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:32px 0 40px;
    border-bottom:1px solid var(--line);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(560px 280px at 14% 12%,rgba(18,184,166,.20),transparent 68%),
      radial-gradient(460px 240px at 88% 0%,rgba(255,138,61,.14),transparent 70%),
      url("/assets/images/backpic/back-1.png") center/cover no-repeat;
    opacity:.85;
    -webkit-mask-image:linear-gradient(180deg,#000 0%,#000 62%,rgba(0,0,0,.18) 100%);
    mask-image:linear-gradient(180deg,#000 0%,#000 62%,rgba(0,0,0,.18) 100%);
    z-index:0;
  }
  .page-hero .container{position:relative;z-index:1;}
  .hero-inner{display:grid;gap:24px;}
  @media(min-width:1024px){
    .page-hero{padding:44px 0 56px;}
    .hero-inner{grid-template-columns:minmax(0,1fr) 300px;align-items:center;gap:40px;}
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    background:#FFFFFF;border:1px solid rgba(18,184,166,.34);
    font-size:13px;font-weight:600;color:var(--brand-deep);
    box-shadow:0 6px 16px rgba(16,42,76,.06);
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
  .page-hero h1{
    margin-top:16px;
    font-size:clamp(28px,4.2vw,40px);
    line-height:1.25;font-weight:800;letter-spacing:-.02em;
  }
  .page-hero h1 .hl{
    background:linear-gradient(120deg,var(--brand) 0%,var(--brand-deep) 100%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .page-lead{
    margin-top:14px;max-width:38em;
    font-size:16px;color:var(--text-2);line-height:1.85;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
  .hero-actions .btn{width:100%;}
  @media(min-width:520px){.hero-actions .btn{width:auto;}}
  .hero-side{
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
    padding:20px;
  }
  .hero-side h2{font-size:15px;font-weight:700;color:var(--text);}
  .hero-side .mini-list{margin-top:12px;display:flex;flex-direction:column;gap:10px;}
  .hero-side .mini-list li{
    display:flex;align-items:flex-start;gap:10px;
    font-size:14px;color:var(--text-2);line-height:1.6;
  }
  .tick{
    flex:0 0 auto;width:18px;height:18px;border-radius:6px;margin-top:2px;
    background:var(--brand-soft);color:var(--brand-deep);
    display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:44px 0;}
  @media(min-width:768px){.section{padding:60px 0;}}
  @media(min-width:1024px){.section{padding:72px 0;}}
  .section-head{max-width:760px;margin-bottom:24px;}
  @media(min-width:768px){.section-head{margin-bottom:32px;}}
  .section-kicker{
    display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
    color:var(--brand-deep);text-transform:none;
  }
  .section-head h2{
    margin-top:8px;
    font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:800;letter-spacing:-.015em;
  }
  .section-head p{margin-top:10px;font-size:15.5px;color:var(--text-2);max-width:42em;}

  /* 数据带 */
  .stat-strip{
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-card);
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
    overflow:hidden;
  }
  @media(min-width:900px){.stat-strip{grid-template-columns:repeat(4,minmax(0,1fr));}}
  .stat{
    padding:20px 18px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);
  }
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-last-child(-n+2){border-bottom:0;}
  @media(min-width:900px){
    .stat{border-bottom:0;border-right:1px solid var(--line);}
    .stat:nth-child(2n){border-right:1px solid var(--line);}
    .stat:last-child{border-right:0;}
  }
  .stat .num{
    font-size:clamp(30px,4vw,44px);font-weight:800;line-height:1.1;
    font-variant-numeric:tabular-nums;
    background:linear-gradient(120deg,var(--brand) 0%,var(--brand-deep) 100%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .stat .num small{font-size:15px;font-weight:700;margin-left:2px;}
  .stat .label{margin-top:6px;font-size:13px;color:var(--text-3);}

  /* 图表区 */
  .chart-grid{display:grid;gap:20px;}
  @media(min-width:1024px){.chart-grid{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:24px;}}
  .panel{
    background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow-card);padding:20px;
  }
  @media(min-width:768px){.panel{padding:24px;}}
  .panel-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px;}
  .panel-head h3{font-size:18px;font-weight:700;}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
    background:var(--brand-soft);color:var(--brand-deep);border:1px solid rgba(18,184,166,.28);
  }
  .tag-accent{background:#FFF1E4;color:#B4600F;border-color:rgba(255,138,61,.42);}
  .chart-box{
    position:relative;border-radius:14px;overflow:hidden;
    background:linear-gradient(180deg,#F7FBFF 0%,#FFFFFF 100%);
    border:1px solid var(--line);padding:12px 8px 4px;
  }
  .chart-box svg{width:100%;height:auto;display:block;}
  .chart-note{margin-top:10px;font-size:12.5px;color:var(--text-3);}
  .chart-legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:12.5px;color:var(--text-2);}
  .chart-legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px;}

  .point-list{display:flex;flex-direction:column;gap:14px;}
  .point{
    display:flex;gap:12px;padding:14px 16px;border-radius:14px;
    background:var(--panel-soft);border:1px solid var(--line);
    transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .point:hover{border-color:rgba(18,184,166,.45);transform:translateY(-2px);box-shadow:0 12px 26px rgba(16,42,76,.08);}
  .point .idx{
    flex:0 0 auto;width:26px;height:26px;border-radius:8px;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
    color:#fff;font-size:13px;font-weight:800;
    display:inline-flex;align-items:center;justify-content:center;
    font-variant-numeric:tabular-nums;
  }
  .point h4{font-size:15.5px;font-weight:700;}
  .point p{margin-top:4px;font-size:14px;color:var(--text-2);line-height:1.7;}

  .shot{
    border-radius:14px;overflow:hidden;border:1px solid var(--line);
    background:var(--bg-soft);aspect-ratio:16/9;
  }
  .shot img{width:100%;height:100%;object-fit:cover;}
  .shot-cap{margin-top:10px;font-size:12.5px;color:var(--text-3);text-align:center;}

  /* 定义列表 */
  .dl-grid{display:grid;gap:0 32px;}
  @media(min-width:768px){.dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  .dl-item{
    display:flex;align-items:baseline;justify-content:space-between;gap:14px;
    padding:14px 0;border-bottom:1px dashed var(--line);
  }
  .dl-item dt{font-size:12.5px;color:var(--text-3);letter-spacing:.02em;}
  .dl-item dd{font-size:15px;font-weight:600;color:var(--text);text-align:right;}

  /* 对比卡 */
  .compare-grid{display:grid;gap:20px;}
  @media(min-width:768px){.compare-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}
  .compare-card{
    position:relative;background:#FFFFFF;border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow-card);padding:22px;
    transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
  .compare-card.is-featured{border-color:rgba(18,184,166,.55);box-shadow:0 18px 40px rgba(18,184,166,.16);}
  .compare-card h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
  .compare-card .sub{margin-top:6px;font-size:13px;color:var(--text-3);}
  .compare-rows{margin-top:16px;display:flex;flex-direction:column;gap:0;}
  .compare-row{
    display:flex;align-items:center;justify-content:space-between;
    padding:11px 0;border-bottom:1px dashed var(--line);
  }
  .compare-row:last-child{border-bottom:0;}
  .compare-row span{font-size:14px;color:var(--text-2);}
  .compare-row strong{font-size:16px;font-weight:800;font-variant-numeric:tabular-nums;}
  .compare-row strong.up{color:var(--brand-deep);}
  .compare-row strong.flat{color:var(--text);}

  /* FAQ */
  .faq-wrap{max-width:820px;margin:0 auto;}
  .faq-item{
    background:#FFFFFF;border:1px solid var(--line);border-radius:14px;
    margin-bottom:10px;overflow:hidden;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .faq-item:hover{border-color:rgba(18,184,166,.4);}
  .faq-item.is-open{border-color:rgba(18,184,166,.5);box-shadow:0 12px 28px rgba(18,184,166,.12);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 18px;text-align:left;
  }
  .faq-q h3{font-size:16px;font-weight:700;line-height:1.6;}
  .faq-icon{
    flex:0 0 auto;width:26px;height:26px;border-radius:8px;
    background:var(--brand-soft);color:var(--brand-deep);
    display:inline-flex;align-items:center;justify-content:center;
    font-size:16px;font-weight:700;
    transition:transform .2s var(--ease),background .2s var(--ease);
  }
  .faq-item.is-open .faq-icon{background:var(--brand);color:#fff;transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
  .faq-a-inner{
    padding:0 18px 16px 21px;
    border-left:3px solid transparent;
    font-size:15px;color:var(--text-2);line-height:1.8;
  }
  .faq-item.is-open .faq-a-inner{border-left-color:var(--brand);padding-left:15px;}

  /* CTA 横条 */
  .cta-band{
    border-radius:var(--radius-lg);
    background:linear-gradient(135deg,#0E2233 0%,#123B4A 52%,#0F5E63 100%);
    color:#fff;padding:28px 24px;
    display:grid;gap:20px;
    box-shadow:0 22px 48px rgba(11,58,74,.28);
    position:relative;overflow:hidden;
  }
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-70px;width:240px;height:240px;border-radius:50%;
    background:radial-gradient(circle,rgba(42,223,200,.36),transparent 70%);
    pointer-events:none;
  }
  @media(min-width:900px){
    .cta-band{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:34px 36px;}
  }
  .cta-band h2{font-size:clamp(20px,2.6vw,26px);font-weight:800;line-height:1.35;color:#fff;}
  .cta-band p{margin-top:8px;font-size:14.5px;color:rgba(226,240,246,.82);max-width:40em;}
  .cta-band .actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}
  .cta-band .btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff;}
  .cta-band .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(42,223,200,.8);color:#fff;}
  .cta-band .btn{width:100%;}
  @media(min-width:520px){.cta-band .btn{width:auto;}}

  /* 页脚 */
  .site-footer{
    background:#08131F;color:#C6D4E4;margin-top:40px;
    border-top:1px solid rgba(148,178,224,.16);
  }
  .site-footer .container{padding-top:44px;padding-bottom:20px;}
  .footer-grid{display:grid;gap:28px;}
  @media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media(min-width:1024px){.footer-grid{grid-template-columns:4fr 3fr 3fr 2fr;gap:32px;}}
  .footer-brand p{margin-top:12px;font-size:13.5px;line-height:1.8;color:#93A6BE;max-width:24em;}
  .footer-brand .version-chip{display:inline-block;margin-top:14px;background:rgba(255,138,61,.12);border-color:rgba(255,138,61,.42);color:#FFB37A;}
  .footer-brand .brand-name{color:#fff;}
  .footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:.02em;}
  .footer-col ul{display:flex;flex-direction:column;gap:2px;}
  .footer-col li a{
    display:inline-flex;align-items:center;min-height:44px;
    font-size:13.5px;color:#9DB0C8;
    transition:color .2s var(--ease),text-underline-offset .2s var(--ease);
  }
  .footer-col li a:hover{color:#2ADFC8;text-decoration:underline;text-underline-offset:4px;}
  .qr-box{
    width:120px;height:120px;border-radius:14px;
    background:
      linear-gradient(135deg,rgba(42,223,200,.18),rgba(20,169,201,.10)),
      repeating-linear-gradient(0deg,#0F2233 0 6px,#12293C 6px 12px);
    border:1px solid rgba(148,178,224,.24);
    position:relative;
  }
  .qr-box::after{
    content:"";position:absolute;inset:34px;border-radius:8px;
    border:2px dashed rgba(42,223,200,.55);
  }
  .footer-qr small{display:block;margin-top:10px;font-size:12px;color:#7E92AB;line-height:1.6;max-width:170px;}
  .footer-bottom{
    margin-top:32px;padding-top:18px;border-top:1px solid rgba(148,178,224,.14);
    display:flex;flex-direction:column;gap:8px;
    font-size:12.5px;color:#7E92AB;
  }
  @media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;gap:16px;}}
  .footer-bottom .risk{color:#6B7E96;}

  @media(prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  }

/* roulang page: category3 */
:root{
  --bg:#070B14;
  --bg-deep:#05090F;
  --panel:rgba(16,26,46,.55);
  --panel-solid:#0E1729;
  --line:rgba(148,178,224,.14);
  --line-strong:rgba(42,223,200,.40);
  --brand:#2ADFC8;
  --brand-deep:#14A9C9;
  --accent:#FF8A3D;
  --text:#F2F6FF;
  --text-2:#9FB0CC;
  --text-3:#66748F;
  --radius:18px;
  --radius-lg:24px;
  --radius-sm:12px;
  --shadow-card:0 18px 48px rgba(1,6,18,.55);
  --shadow-glow:0 0 24px rgba(42,223,200,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(42,223,200,.28);color:#fff}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#05121A;font-weight:700;padding:10px 18px;border-radius:0 0 12px 0;z-index:999}
.skip:focus{left:0}
.muted{color:var(--text-2)}
.tabular{font-variant-numeric:tabular-nums}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  height:70px;
  border-bottom:1px solid transparent;
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled,
body.nav-open .site-header{
  background:rgba(7,11,20,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-wrap{
  max-width:1220px;margin:0 auto;height:100%;
  padding:0 20px;display:flex;align-items:center;gap:20px;
}
@media (min-width:768px){.nav-wrap{padding:0 24px}}
@media (min-width:1024px){.nav-wrap{padding:0 32px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:7px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  box-shadow:0 0 18px rgba(42,223,200,.35);
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:2px;flex:1;justify-content:center}
.nav-link{
  position:relative;padding:8px 12px;border-radius:999px;
  font-size:15px;color:var(--text-2);
  transition:color .22s var(--ease),background .22s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:16px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:translateX(-50%) scaleX(0);
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--brand);background:rgba(42,223,200,.12)}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.version-chip{
  display:inline-flex;align-items:center;
  font-size:12px;line-height:1;padding:5px 9px;border-radius:999px;
  color:var(--accent);border:1px solid rgba(255,138,61,.45);
  background:rgba(255,138,61,.08);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.nav-toggle{
  display:none;position:relative;z-index:80;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  align-items:center;justify-content:center;
  transition:border-color .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:background .2s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);
  border-radius:2px;transition:transform .25s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-drawer-cta{display:none}
.nav-mask{
  position:fixed;inset:0;z-index:45;
  background:rgba(3,7,14,.66);
  opacity:0;pointer-events:none;transition:opacity .26s var(--ease);
}
body.nav-open .nav-mask{opacity:1;pointer-events:auto}

@media (max-width:1023px){
  .nav-toggle{display:flex}
  .nav-actions .btn-primary{display:none}
  .nav-actions .version-chip{display:none}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:86%;max-width:360px;height:100%;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:2px;padding:88px 20px 32px;
    background:rgba(7,11,20,.97);
    -webkit-backdrop-filter:blur(16px);
    backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    transform:translateX(101%);
    transition:transform .3s var(--ease);
    overflow-y:auto;z-index:70;
  }
  body.nav-open .nav-links{transform:translateX(0)}
  .nav-link{
    height:48px;display:flex;align-items:center;
    border-radius:10px;font-size:16px;padding:0 14px;
  }
  .nav-link.is-active{box-shadow:inset 3px 0 0 var(--brand)}
  .nav-link::after{display:none}
  .nav-drawer-cta{display:flex;margin-top:22px;width:100%}
}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(42,223,200,.42);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{
  background:transparent;color:var(--text);
  border:1px solid rgba(159,176,204,.28);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(42,223,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-glow{box-shadow:var(--shadow-glow)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  min-height:44px;
}
.link-arrow span.arw{transition:transform .22s var(--ease)}
.link-arrow:hover span.arw{transform:translateX(3px)}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px}

/* ============ page head ============ */
.page-head{position:relative;padding:26px 0 52px;border-bottom:1px solid var(--line);overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(circle at 18% 38%,rgba(42,223,200,.14),transparent 56%),
    radial-gradient(circle at 82% 10%,rgba(20,169,201,.10),transparent 52%),
    repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 1px,transparent 1px 9px),
    linear-gradient(180deg,rgba(7,11,20,.45),var(--bg));
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:22px;
}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(102,116,143,.6)}
.breadcrumb .now{color:var(--text-2)}
.page-head h1{
  font-size:clamp(30px,4.2vw,40px);line-height:1.22;font-weight:800;letter-spacing:-.02em;
  max-width:20em;
}
.page-head h1 em{font-style:normal;color:var(--brand)}
.page-lead{
  margin-top:16px;max-width:44em;font-size:16px;line-height:1.85;color:var(--text-2);
}
.page-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;font-size:12.5px;
  color:var(--text-2);border:1px solid var(--line);
  background:rgba(16,26,46,.5);
}
.pill i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.pill.is-brand{color:var(--brand);border-color:var(--line-strong);background:rgba(42,223,200,.10)}

/* ============ section ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:76px 0}}
@media (min-width:1024px){.section{padding:92px 0}}
.section-alt{background:linear-gradient(180deg,rgba(5,9,15,.9),rgba(7,11,20,1));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:46em;margin-bottom:28px}
.section-head h2{font-size:clamp(23px,3vw,34px);line-height:1.28;font-weight:700;letter-spacing:-.01em}
.section-head .lead{margin-top:12px;color:var(--text-2);font-size:16px;line-height:1.8}

/* ============ carousel ============ */
.carousel{position:relative}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:6px;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{
  flex:0 0 86%;scroll-snap-align:start;
  background:var(--panel-solid);
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.shot-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 22px 54px rgba(1,6,18,.6)}
.shot-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A1120}
.shot-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.shot-card:hover .shot-media img{transform:scale(1.03)}
.shot-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,0) 45%,rgba(7,11,20,.55));
}
.shot-body{padding:18px 18px 22px}
.shot-body h3{font-size:19px;font-weight:600;margin-top:10px;line-height:1.45}
.shot-body p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.75}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;
  color:var(--brand);background:rgba(42,223,200,.12);border:1px solid rgba(42,223,200,.28);
}
@media (min-width:768px){
  .shot-card{flex:0 0 46%}
}
@media (min-width:1024px){
  .shot-card{flex:0 0 31.8%}
}
.carousel-ctl{display:flex;align-items:center;gap:14px;margin-top:22px}
.circle-btn{
  width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.circle-btn:hover{border-color:var(--line-strong);color:var(--brand);background:rgba(42,223,200,.08);transform:translateY(-2px)}
.dots{display:flex;align-items:center;gap:8px;margin-left:6px}
.dot{
  width:8px;height:8px;border-radius:999px;background:rgba(159,176,204,.3);
  transition:width .24s var(--ease),background .24s var(--ease);
}
.dot.is-on{width:22px;background:var(--brand)}

/* ============ feature grid ============ */
.feature-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:640px){.feature-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (min-width:1024px){.feature-grid{grid-template-columns:repeat(3,1fr);gap:22px}}
.feature-card{
  position:relative;padding:24px 22px;border-radius:var(--radius);
  background:var(--panel-solid);border:1px solid var(--line);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.feature-card:hover{
  border-color:var(--line-strong);transform:translateY(-3px);
  box-shadow:0 20px 44px rgba(1,6,18,.55);
}
.ico-box{
  width:44px;height:44px;border-radius:12px;
  background:rgba(42,223,200,.12);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);margin-bottom:16px;
}
.ico-box svg{width:22px;height:22px;display:block}
.feature-card h3{font-size:19px;font-weight:600;line-height:1.4}
.feature-card p{margin-top:8px;font-size:15px;color:var(--text-2);line-height:1.75}
.feature-card .meta{margin-top:14px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ============ split ============ */
.split{
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  padding:26px 0;
}
@media (min-width:1024px){
  .split{grid-template-columns:1fr 1fr;gap:56px;padding:34px 0}
  .split.reverse .split-text{order:2}
  .split.reverse .split-media{order:1}
}
.split-text h3{font-size:clamp(21px,2.4vw,26px);font-weight:700;line-height:1.35}
.split-text p{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.85}
.split-text .bullets{margin-top:18px;display:grid;gap:10px}
.split-text .bullets li{
  position:relative;padding-left:20px;font-size:15px;color:var(--text-2);line-height:1.75;
}
.split-text .bullets li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(42,223,200,.5);
}
.split-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  background:#0A1120;
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-media .caption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  font-size:13px;color:var(--text-2);
  background:linear-gradient(180deg,rgba(7,11,20,0),rgba(7,11,20,.9));
}

/* ============ faq ============ */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:10px}
.faq-item{
  position:relative;border-radius:14px;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  transition:border-color .24s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand);opacity:0;transition:opacity .24s var(--ease);
}
.faq-item.is-open{border-color:var(--line-strong)}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text);
  min-height:56px;
}
.faq-q .sign{
  flex:0 0 auto;width:22px;height:22px;position:relative;color:var(--brand);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-q .sign::before{left:0;top:10px;width:22px;height:2px}
.faq-q .sign::after{left:10px;top:0;width:2px;height:22px}
.faq-item.is-open .faq-q .sign::after{transform:rotate(90deg);opacity:0}
.faq-a{display:none;padding:0 18px 18px;font-size:15px;color:var(--text-2);line-height:1.78}
.faq-item.is-open .faq-a{display:block}

/* ============ cta bar ============ */
.cta-bar{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  padding:32px 24px;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    linear-gradient(120deg,rgba(7,11,20,.92),rgba(7,11,20,.72)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
}
.cta-bar::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(circle at 12% 20%,rgba(42,223,200,.18),transparent 55%);
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;flex-direction:column;gap:20px;
}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);line-height:1.3;font-weight:700}
.cta-inner p{color:var(--text-2);font-size:15.5px;margin-top:10px;max-width:38em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media (min-width:1024px){
  .cta-bar{padding:44px 48px}
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px}
  .cta-actions{flex:0 0 auto}
}
@media (max-width:639px){
  .cta-actions .btn{width:100%}
}

/* ============ footer ============ */
.site-footer{
  background:var(--bg-deep);
  border-top:1px solid var(--line);
  padding:48px 0 26px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1fr 1fr;gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:4fr 3fr 3fr 2fr;gap:40px}}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:22em;margin-bottom:14px}
.footer-col h3{font-size:15px;font-weight:600;color:var(--text);margin-bottom:10px}
.footer-col ul{display:grid;gap:2px}
.footer-col ul a{
  display:inline-flex;align-items:center;min-height:40px;
  font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.footer-col ul a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-qr .qr-box{
  width:120px;height:120px;border-radius:14px;position:relative;
  border:1px dashed rgba(148,178,224,.28);
  background:linear-gradient(135deg,rgba(42,223,200,.10),rgba(20,169,201,.05));
  margin-bottom:10px;
}
.footer-qr .qr-box::before{
  content:"";position:absolute;inset:14px;border-radius:8px;opacity:.45;
  background-image:
    repeating-linear-gradient(0deg,rgba(242,246,255,.2) 0 4px,transparent 4px 8px),
    repeating-linear-gradient(90deg,rgba(242,246,255,.2) 0 4px,transparent 4px 8px);
}
.footer-qr small{display:block;font-size:12px;color:var(--text-3);line-height:1.7;max-width:15em}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;
  font-size:12.5px;color:var(--text-3);
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;gap:24px}
}
.footer-bottom .risk{max-width:46em;line-height:1.7}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --surface-2:#EEF3F9;
  --ink:#0E1A2B;
  --ink-2:#4E5F7A;
  --ink-3:#8494AC;
  --line:#E3EAF3;
  --brand:#12B5A0;
  --brand-2:#0B8F87;
  --brand-soft:#E4F7F4;
  --accent:#FF8A3D;
  --accent-soft:#FFF0E4;
  --dark:#0B1424;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow-sm:0 2px 10px rgba(14,26,43,.05);
  --shadow:0 14px 34px rgba(14,26,43,.08);
  --shadow-lg:0 28px 64px rgba(14,26,43,.14);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{line-height:1.28;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}

body .container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;
  font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(18,181,160,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(18,181,160,.36)}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(18,181,160,.3)}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(18,181,160,.55);color:var(--brand-2);transform:translateY(-2px);box-shadow:0 12px 26px rgba(14,26,43,.09)}
.btn-ghost:active{transform:translateY(0)}
.version-chip{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  border:1px solid rgba(255,138,61,.45);color:#C2620F;background:rgba(255,138,61,.09);
  font-size:12px;font-weight:700;letter-spacing:.02em;font-variant-numeric:tabular-nums;
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.97);box-shadow:0 10px 28px rgba(14,26,43,.07)}
.nav-wrap{max-width:1220px;margin:0 auto;padding:0 20px;height:72px;display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#0891B2);
  position:relative;
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
  box-shadow:0 6px 16px rgba(18,181,160,.32);
}
.brand-mark::after{content:"";position:absolute;inset:9px;border:2px solid rgba(255,255,255,.92);border-radius:50%}
.brand-name{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  padding:9px 13px;border-radius:999px;font-size:15px;color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease);white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:var(--surface-2)}
.nav-link.is-active{color:var(--brand-2);background:var(--brand-soft);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 抽屉 ============ */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;pointer-events:none}
.drawer.is-open{visibility:visible;pointer-events:auto}
.drawer-mask{position:absolute;inset:0;background:rgba(11,20,36,.46);opacity:0;transition:opacity .26s var(--ease)}
.drawer.is-open .drawer-mask{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:86%;max-width:360px;
  background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s var(--ease);
  box-shadow:-24px 0 60px rgba(14,26,43,.18);
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:17px;font-weight:800}
.drawer-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:12px;font-size:24px;line-height:1;color:var(--ink-2)}
.drawer-close:hover{background:var(--surface-2);color:var(--ink)}
.drawer-nav{padding:12px;flex:1;overflow-y:auto;display:grid;gap:4px;align-content:start}
.drawer-link{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;font-size:16px;color:var(--ink-2);transition:background .2s var(--ease),color .2s var(--ease)}
.drawer-link:hover{background:var(--surface-2);color:var(--ink)}
.drawer-link.is-active{color:var(--brand-2);font-weight:600;background:var(--brand-soft);box-shadow:inset 3px 0 0 var(--brand)}
.drawer-foot{padding:16px 18px 24px;border-top:1px solid var(--line)}
.drawer-foot .btn{width:100%}

/* ============ 面包屑 ============ */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);padding-top:26px}
.breadcrumb a{color:var(--ink-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand-2)}
.breadcrumb .sep{color:#C3CFDF}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ============ 页面头部 ============ */
.page-hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 86%);padding-bottom:48px;border-bottom:1px solid var(--line)}
.page-hero::before{
  content:"";position:absolute;top:-200px;left:-8%;width:680px;height:680px;pointer-events:none;
  background:radial-gradient(circle,rgba(18,181,160,.20),rgba(18,181,160,0) 68%);
}
.page-hero::after{
  content:"";position:absolute;right:-140px;bottom:-220px;width:520px;height:520px;pointer-events:none;
  background:radial-gradient(circle,rgba(255,138,61,.14),rgba(255,138,61,0) 70%);
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;gap:52px;align-items:center;padding-top:26px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-2);font-size:13px;font-weight:700;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand)}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(28px,3.9vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.2;
}
.page-hero h1 .hl{
  background:linear-gradient(120deg,var(--brand),#0891B2);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:36em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span + span::before{content:"";width:4px;height:4px;border-radius:50%;background:#C3CFDF}

.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;padding:14px 6px}
.phone-card{
  position:relative;width:100%;max-width:318px;aspect-ratio:3/4;
  border-radius:26px;overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-lg);
  transform:rotate(3deg);
}
.phone-card img{width:100%;height:100%;object-fit:cover}
.hero-float{
  position:absolute;left:0;bottom:8px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:12px 18px;box-shadow:var(--shadow);
  display:grid;gap:2px;min-width:132px;
}
.hero-float b{font-size:22px;font-weight:800;color:var(--brand-2);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-float b em{font-size:12px;font-style:normal;margin-left:2px;color:var(--ink-3)}
.hero-float small{font-size:12px;color:var(--ink-3)}

/* ============ 数据条 ============ */
.stat-strip{padding:0 0 4px;margin-top:-32px;position:relative;z-index:2}
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:26px 16px;box-shadow:var(--shadow);
}
.stat-item{text-align:center;padding:6px 12px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:0}
.stat-num{display:block;font-size:clamp(24px,3vw,36px);font-weight:800;color:var(--brand-2);letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num em{font-size:13px;font-style:normal;margin-left:2px;color:var(--ink-3);font-weight:600}
.stat-label{display:block;margin-top:6px;font-size:13px;color:var(--ink-3)}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section--white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:680px;margin:0 auto 40px;text-align:center}
.section-head h2{font-size:clamp(23px,2.7vw,34px);font-weight:800;letter-spacing:-.02em}
.section-head p{margin-top:12px;font-size:16px;color:var(--ink-2);line-height:1.8}

/* ============ 步骤 ============ */
.steps-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:40px 36px;box-shadow:var(--shadow-sm);max-width:960px;margin:0 auto;
}
.step-list{position:relative;padding-left:38px}
.step-list::before{
  content:"";position:absolute;left:11px;top:10px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(18,181,160,.06));
}
.step-item{position:relative;padding-bottom:30px}
.step-item:last-child{padding-bottom:0}
.step-dot{
  position:absolute;left:-32px;top:9px;width:12px;height:12px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(18,181,160,.16);
}
.step-num{font-size:13px;font-weight:800;color:var(--brand-2);letter-spacing:.12em;font-variant-numeric:tabular-nums}
.step-item h3{font-size:18px;font-weight:700;margin-top:4px;color:var(--ink)}
.step-item p{margin-top:6px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:660px}

/* ============ 配置对照 ============ */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;max-width:960px;margin:0 auto}
.spec-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-l);padding:28px;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.spec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.spec-card h3{font-size:19px;font-weight:700;margin-bottom:6px}
.spec-card .spec-note{font-size:13px;color:var(--ink-3);margin-bottom:14px}
.spec-card.is-recommended{border-color:rgba(18,181,160,.45);box-shadow:0 20px 44px rgba(18,181,160,.14)}
.rec-badge{
  position:absolute;top:-12px;right:24px;background:var(--accent);color:#fff;
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;
  box-shadow:0 6px 14px rgba(255,138,61,.34);
}
.spec-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:18px;
  padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;
}
.spec-list li:last-child{border-bottom:0;padding-bottom:0}
.spec-list span{color:var(--ink-3);font-size:13px;flex:0 0 auto}
.spec-list b{font-weight:600;color:var(--ink);text-align:right;line-height:1.6}

/* ============ 下载面板 ============ */
.download-panel{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr 200px;gap:36px;align-items:center;
  background:var(--dark);border-radius:28px;padding:44px 40px;color:#fff;
  box-shadow:0 30px 70px rgba(11,20,36,.28);
}
.download-panel::before{
  content:"";position:absolute;top:-140px;right:-90px;width:440px;height:440px;pointer-events:none;
  background:radial-gradient(circle,rgba(18,181,160,.34),rgba(18,181,160,0) 70%);
}
.download-copy{position:relative;z-index:1}
.download-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff}
.download-copy p{margin-top:12px;font-size:15px;line-height:1.8;color:#A9BACE;max-width:44em}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.dl-btn{
  display:inline-flex;align-items:center;gap:12px;
  min-height:58px;padding:10px 18px;border-radius:14px;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  color:#fff;transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.dl-btn:hover{transform:translateY(-2px);border-color:rgba(18,181,160,.7);background:rgba(18,181,160,.14)}
.dl-btn.is-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  border-color:transparent;box-shadow:0 14px 32px rgba(18,181,160,.34);
}
.dl-btn.is-primary:hover{box-shadow:0 20px 40px rgba(18,181,160,.44);background:linear-gradient(135deg,#18C9B2,#0B8F87)}
.dl-icon{
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.14);font-size:15px;font-weight:800;
}
.dl-btn.is-primary .dl-icon{background:rgba(255,255,255,.22)}
.dl-text{display:grid;gap:1px;text-align:left}
.dl-text b{font-size:15px;font-weight:700;line-height:1.35}
.dl-text small{font-size:12px;color:#9FB3C9;font-variant-numeric:tabular-nums}
.download-qr{position:relative;z-index:1;display:grid;justify-items:center;gap:12px;text-align:center}
.download-qr p{font-size:12px;color:#93A6BD;line-height:1.6}
.qr-box{
  width:120px;height:120px;border-radius:14px;border:6px solid #fff;
  background-color:#fff;
  background-image:repeating-conic-gradient(#0B1424 0% 25%,#ffffff 0% 50%);
  background-size:16px 16px;
  box-shadow:0 10px 24px rgba(0,0,0,.28);
}

/* ============ 注意事项 ============ */
.tip-list{display:grid;gap:14px;max-width:880px;margin:0 auto}
.tip-list li{
  position:relative;padding:17px 22px 17px 50px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  font-size:15px;line-height:1.8;color:var(--ink-2);
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.tip-list li:hover{border-color:rgba(18,181,160,.42);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.tip-list li::before{
  content:"";position:absolute;left:22px;top:24px;width:10px;height:10px;
  border-radius:3px;background:var(--brand);box-shadow:0 0 0 3px rgba(18,181,160,.14);
}
.tip-list strong{color:var(--ink);font-weight:700}

/* ============ FAQ ============ */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:10px}
.faq-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:rgba(18,181,160,.34)}
.faq-item.is-open{border-color:rgba(18,181,160,.46);box-shadow:var(--shadow-sm)}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;min-height:58px;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;
}
.faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px;color:var(--brand)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--ink-2)}

/* ============ CTA ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:linear-gradient(120deg,#EAF9F6 0%,#F3FAFF 100%);
  border:1px solid rgba(18,181,160,.24);border-radius:24px;padding:34px 38px;
}
.cta-bar h2{font-size:clamp(21px,2.4vw,27px);font-weight:800}
.cta-bar p{margin-top:10px;font-size:15px;color:var(--ink-2);line-height:1.8;max-width:40em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#C7D3E4;padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr .9fr;gap:40px;padding-bottom:44px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:#8FA1BC;margin-top:16px;max-width:300px}
.site-footer .version-chip{border-color:rgba(255,138,61,.5);color:#FFB27D;background:rgba(255,138,61,.12);margin-top:16px}
.footer-col h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:4px}
.footer-col a{
  display:inline-flex;align-items:center;min-height:40px;font-size:14px;color:#9CAFC8;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-qr .qr-box{width:112px;height:112px;border-radius:12px;margin-bottom:12px}
.footer-qr small{display:block;font-size:12px;line-height:1.7;color:#7B8DA8;max-width:170px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7B8DA8;
}
.footer-bottom .risk{font-size:12px;color:#6B7C95;line-height:1.7}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-actions .version-chip{display:none}
  .hero-grid{gap:36px}
}
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{order:2;justify-content:flex-start;padding-left:6px}
  .phone-card{max-width:280px}
  .download-panel{grid-template-columns:1fr;padding:34px 28px}
  .download-qr{display:flex;align-items:center;gap:18px;justify-items:start;text-align:left}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:58px 0}
  .steps-panel{padding:30px 24px}
  .spec-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  body .container{padding:0 16px}
  .nav-wrap{height:64px;padding:0 16px;gap:12px}
  .brand-name{font-size:17px}
  .section{padding:46px 0}
  .section-head{margin-bottom:28px}
  .hero-cta .btn{width:100%}
  .stat-strip{margin-top:-20px}
  .stat-grid{grid-template-columns:1fr 1fr;padding:14px 8px}
  .stat-item{border-right:1px solid var(--line);padding:12px 4px}
  .stat-item:nth-child(2n){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .step-list{padding-left:32px}
  .step-dot{left:-27px}
  .step-list::before{left:9px}
  .cta-bar{padding:26px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .tip-list li{padding:16px 18px 16px 44px}
  .tip-list li::before{left:18px;top:22px}
  .download-panel{padding:28px 20px;border-radius:22px}
  .hero-float{position:static;margin-top:16px;justify-self:start}
  .hero-visual{display:grid}
  .phone-card{transform:rotate(0);max-width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category5 */
:root{
  --bg:#070B14;
  --bg-deep:#05090F;
  --panel:rgba(16,26,46,.55);
  --panel-solid:#0E1729;
  --line:rgba(148,178,224,.14);
  --line-strong:rgba(42,223,200,.40);
  --brand:#2ADFC8;
  --brand-deep:#14A9C9;
  --accent:#FF8A3D;
  --text:#F2F6FF;
  --text-2:#9FB0CC;
  --text-3:#66748F;
  --radius-lg:24px;
  --radius:18px;
  --radius-sm:12px;
  --shadow-card:0 18px 48px rgba(1,6,18,.55);
  --shadow-glow:0 0 24px rgba(42,223,200,.28);
  --container:1220px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
::selection{background:rgba(42,223,200,.28);color:#fff}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;font-weight:700;
  box-shadow:0 10px 26px rgba(20,169,201,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{
  background:transparent;color:var(--text);
  border-color:rgba(159,176,204,.28);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(42,223,200,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:var(--radius-sm)}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14.5px;font-weight:600;
  min-height:44px;
}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover span{transform:translateX(3px)}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,.55);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.88);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px rgba(1,6,18,.5);
}
.nav-wrap{
  max-width:var(--container);margin:0 auto;padding:0 20px;
  height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  position:relative;width:28px;height:28px;flex:0 0 28px;border-radius:9px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  clip-path:polygon(0 0,100% 0,100% 72%,72% 100%,0 100%);
  box-shadow:0 0 16px rgba(42,223,200,.35);
}
.brand-mark::after{content:"";position:absolute;inset:7px;border-radius:3px;background:rgba(5,12,20,.86)}
.brand-name{font-size:17.5px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;padding:0 12px;
  font-size:15px;color:var(--text-2);border-radius:999px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{
  content:"";position:absolute;left:50%;bottom:6px;width:16px;height:2px;border-radius:2px;
  background:var(--brand);transform:translateX(-50%);
}
.nav-link.is-active{color:var(--brand);background:rgba(42,223,200,.12);font-weight:600}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.nav-actions{display:flex;align-items:center;gap:10px}
.version-chip{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  border:1px solid rgba(255,138,61,.45);border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(16,26,46,.5);
  align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;z-index:70;background:rgba(3,6,12,.62);
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;
  width:86%;max-width:360px;padding:18px 18px 22px;
  display:flex;flex-direction:column;
  background:rgba(7,11,20,.97);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .3s var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:20px;line-height:1;color:var(--text-2);
}
.drawer-close:hover{color:var(--text);border-color:var(--line-strong)}
.drawer-links{flex:1;overflow-y:auto;display:grid;gap:2px;align-content:start}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 12px;
  border-left:3px solid transparent;border-radius:0 10px 10px 0;
  font-size:15px;color:var(--text-2);
}
.drawer-link:hover{color:var(--text);background:rgba(42,223,200,.06)}
.drawer-link.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(42,223,200,.09);font-weight:600}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line)}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:30px 0 44px;
  background:
    radial-gradient(900px 380px at 12% 0%,rgba(42,223,200,.14),transparent 70%),
    linear-gradient(180deg,rgba(16,26,46,.55),rgba(7,11,20,0) 88%),
    var(--bg);
}
.page-head::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 1px,transparent 1px 9px);
  opacity:.55;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 88%);
  mask-image:linear-gradient(180deg,#000,transparent 88%);
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.breadcrumb a{color:var(--text-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.7}
.breadcrumb [aria-current]{color:var(--text-2)}
.page-title{
  margin-top:16px;
  font-size:clamp(28px,4vw,44px);line-height:1.18;font-weight:800;letter-spacing:-.02em;
  color:var(--text);
}
.page-title .accent{
  background:linear-gradient(120deg,var(--brand),var(--brand-deep));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-lead{margin-top:16px;max-width:46em;font-size:16.5px;color:var(--text-2)}
.head-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);border:1px solid var(--line);background:rgba(16,26,46,.5);
}
.chip.is-brand{color:var(--brand);border-color:rgba(42,223,200,.38);background:rgba(42,223,200,.1)}

/* ---------- 移动端章节胶囊条 ---------- */
.toc-scroll{
  display:none;gap:8px;overflow-x:auto;padding:16px 0 4px;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);
  mask-image:linear-gradient(90deg,#000 88%,transparent);
}
.toc-scroll::-webkit-scrollbar{display:none}
.toc-pill{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:999px;font-size:13.5px;color:var(--text-2);
  border:1px solid var(--line);background:rgba(16,26,46,.55);white-space:nowrap;
}
.toc-pill.is-current{color:var(--brand);border-color:var(--line-strong);background:rgba(42,223,200,.12)}

/* ---------- 章节布局 ---------- */
.guide-layout{
  display:grid;grid-template-columns:240px minmax(0,1fr);gap:44px;
  align-items:start;padding:44px 0 72px;
}
.guide-toc{
  position:sticky;top:96px;
  padding:20px 16px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.toc-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:10px;padding-left:12px}
.toc-list{display:grid;gap:2px}
.toc-list a{
  display:block;padding:9px 12px;border-left:3px solid transparent;border-radius:0 10px 10px 0;
  font-size:14px;color:var(--text-2);line-height:1.5;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{color:var(--text);background:rgba(42,223,200,.06)}
.toc-list a.is-current{color:var(--brand);border-left-color:var(--brand);background:rgba(42,223,200,.09);font-weight:600}
.toc-foot{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3);padding-left:12px}

.guide-body{min-width:0}
.guide-body section{padding-top:4px;margin-bottom:40px;scroll-margin-top:96px}
.guide-body h2{
  font-size:clamp(21px,2.3vw,26px);line-height:1.4;font-weight:700;letter-spacing:-.01em;
  padding-left:14px;border-left:3px solid var(--brand);
  margin:0 0 16px;color:var(--text);
}
.guide-body h3{font-size:18px;font-weight:600;margin:26px 0 10px;color:var(--text)}
.guide-body p{color:#C9D6EA;margin-bottom:14px;font-size:16px}
.guide-body p:last-child{margin-bottom:0}
.guide-body strong{color:#fff;font-weight:600}

.guide-figure{
  margin:0 0 34px;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--panel-solid);
  box-shadow:var(--shadow-card);
}
.guide-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.guide-figure figcaption{
  font-size:13px;color:var(--text-3);padding:10px 16px;border-top:1px solid var(--line);line-height:1.6;
}

.guide-list{margin:0 0 16px}
.guide-list li{
  position:relative;padding-left:20px;margin-bottom:10px;
  font-size:15.5px;color:var(--text-2);line-height:1.75;
}
.guide-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.85;
}
.step-list{display:grid;gap:14px;margin:18px 0 16px}
.step-list li{display:flex;gap:14px;align-items:flex-start}
.step-num{
  flex:0 0 28px;height:28px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:#05121A;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 16px rgba(42,223,200,.25);
}
.step-list .step-text{font-size:15.5px;color:var(--text-2);line-height:1.75}
.step-list .step-text b{color:var(--text);font-weight:600}

.callout{
  margin:18px 0 6px;padding:14px 18px;
  border-left:3px solid var(--brand);border-radius:0 14px 14px 0;
  background:rgba(42,223,200,.06);
  font-size:15px;color:var(--text-2);line-height:1.75;
}
.callout b{color:var(--text);font-weight:600}

.chapter-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:44px}
.chapter-card{
  display:block;padding:18px 20px;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.chapter-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.chapter-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.chapter-label{font-size:12px;letter-spacing:.1em;color:var(--text-3)}
.chapter-card strong{display:block;margin-top:6px;font-size:16.5px;font-weight:600;color:var(--text)}
.chapter-card.is-next{text-align:right}

/* ---------- FAQ ---------- */
.faq-section{padding:56px 0 8px;background:radial-gradient(700px 300px at 50% 0%,rgba(42,223,200,.07),transparent 70%)}
.section-head{max-width:760px;margin:0 auto 28px;text-align:center}
.section-head h2{font-size:clamp(23px,2.8vw,32px);line-height:1.3;font-weight:700;color:var(--text)}
.section-head p{margin-top:10px;font-size:15px;color:var(--text-2)}
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:10px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:var(--panel);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item.is-open{border-color:var(--line-strong);box-shadow:inset 3px 0 0 0 var(--brand)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;text-align:left;font-size:16.5px;color:var(--text);line-height:1.6;
}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-2px}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:13px;height:2px}
.faq-icon::after{width:2px;height:13px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{
  max-height:0;overflow:hidden;padding:0 18px;
  transition:max-height .28s var(--ease),padding .28s var(--ease);
  font-size:15px;color:var(--text-2);line-height:1.78;
}
.faq-item.is-open .faq-a{max-height:420px;padding:0 18px 16px}

/* ---------- 底部 CTA ---------- */
.cta-wrap{padding:48px 0 64px}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  padding:30px 34px;border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:
    linear-gradient(120deg,rgba(42,223,200,.12),rgba(16,26,46,.6) 58%),
    var(--panel-solid);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:var(--text)}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;gap:12px;flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line)}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px;
  padding:56px 0 36px;
}
.footer-brand p{margin:14px 0 16px;font-size:14px;color:var(--text-2);max-width:26em;line-height:1.75}
.footer-col h3{font-size:14px;font-weight:600;color:var(--text);margin-bottom:10px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:2px}
.footer-col a{
  display:inline-flex;align-items:center;min-height:40px;
  font-size:14px;color:var(--text-2);transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.footer-qr small{display:block;margin-top:10px;font-size:12px;color:var(--text-3);line-height:1.6;max-width:150px}
.qr-box{
  width:120px;height:120px;border-radius:14px;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,rgba(42,223,200,.18),rgba(16,26,46,.9)),
    repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.05) 0 6px,transparent 6px 12px);
  background-blend-mode:normal,overlay,overlay;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:18px 0 30px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-3);
}
.footer-bottom .risk{color:var(--text-3);opacity:.9}

/* ---------- 响应式 ---------- */
@media (min-width:768px){
  .container,.nav-wrap{padding-left:24px;padding-right:24px}
  .page-head{padding:38px 0 52px}
}
@media (min-width:1024px){
  .container,.nav-wrap{padding-left:32px;padding-right:32px}
  .page-head{padding:46px 0 60px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .version-chip{display:none}
  .guide-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:8px}
  .guide-toc{display:none}
  .toc-scroll{display:flex}
}
@media (max-width:767px){
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:44px 0 28px}
  .chapter-nav{grid-template-columns:minmax(0,1fr)}
  .chapter-card.is-next{text-align:left}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px 22px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .faq-q{font-size:15.5px;padding:14px 16px}
  .faq-a{font-size:14.5px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .guide-body p{font-size:15.5px}
  .page-lead{font-size:15.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* roulang page: category6 */
:root{
  --bg:#070B14;--bg-deep:#05090F;
  --panel:rgba(16,26,46,0.55);--panel-solid:#0E1729;
  --line:rgba(148,178,224,0.14);--line-strong:rgba(42,223,200,0.40);
  --brand:#2ADFC8;--brand-deep:#14A9C9;--accent:#FF8A3D;
  --text:#F2F6FF;--text-2:#9FB0CC;--text-3:#66748F;
  --radius-card:18px;--radius-block:24px;--radius-btn:12px;
  --shadow-card:0 18px 48px rgba(1,6,18,.55);
  --shadow-glow:0 0 24px rgba(42,223,200,.28);
  --shadow-glow-lg:0 0 36px rgba(42,223,200,.42);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1220px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 24px}}
@media(min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,20,0);
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,11,20,.78);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  width:100%;max-width:1220px;margin:0 auto;padding:0 20px;
  height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px;
}
@media(min-width:768px){.nav-wrap{padding:0 24px}}
@media(min-width:1024px){.nav-wrap{padding:0 32px}}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  width:26px;height:26px;border-radius:8px 2px 8px 2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 16px rgba(42,223,200,.45);flex:0 0 auto;
}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.01em;color:#fff}
.nav-links{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 12px;font-size:15px;color:var(--text-2);border-radius:999px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:6px;transform:translateX(-50%) scaleX(0);
  width:16px;height:2px;background:var(--brand);border-radius:2px;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-link.is-active{color:var(--brand);background:rgba(42,223,200,.12)}
.nav-link.is-active::after{display:none}
.nav-actions{display:flex;align-items:center;gap:10px}
.version-chip{
  display:none;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.04em;color:var(--accent);
  border:1px solid rgba(255,138,61,.42);font-variant-numeric:tabular-nums;
}
@media(min-width:640px){.version-chip{display:inline-flex}}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),brightness .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#05121A;box-shadow:var(--shadow-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow-lg);filter:brightness(1.05)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95)}
.btn-ghost{
  background:transparent;color:var(--text);border-color:rgba(159,176,204,.28);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(42,223,200,.08)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
@media(min-width:640px){.btn-block{width:auto}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(16,26,46,.55);cursor:pointer;
}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,6,12,.65);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:360px;z-index:80;
  background:rgba(7,11,20,.97);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .26s var(--ease);
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--text-2);cursor:pointer;
  font-size:18px;
}
.drawer-nav{padding:12px 12px 0;overflow-y:auto;flex:1}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);border-left:3px solid transparent;
}
.drawer-nav a.is-active{color:var(--brand);border-left-color:var(--brand);background:rgba(42,223,200,.08)}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line)}

/* ---------- page head ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 40px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 320px at 18% 28%,rgba(42,223,200,.14),transparent 68%),
    repeating-linear-gradient(45deg,rgba(148,178,224,.05) 0 1px,transparent 1px 9px);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(102,116,143,.7)}
.breadcrumb .current{color:var(--text-2)}
.page-hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.02em;margin:0 0 14px}
.page-hero h1 .hl{background:linear-gradient(135deg,var(--brand),var(--brand-deep));-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero .lead{color:var(--text-2);font-size:16px;max-width:44em;margin:0}
.hero-side-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  font-size:12px;color:var(--text-2);border:1px solid var(--line);background:rgba(16,26,46,.5);
}
.chip .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}

/* ---------- search + filter ---------- */
.toolbar{display:grid;gap:16px;margin-top:26px}
.search-box{
  display:flex;align-items:center;gap:10px;
  background:rgba(9,15,28,.8);border:1px solid var(--line);border-radius:14px;
  padding:8px 8px 8px 16px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,223,200,.18)}
.search-box i{color:var(--text-3);font-size:15px}
.search-box input{
  flex:1;min-width:0;background:transparent;border:0;color:var(--text);
  font-size:15px;height:36px;outline:none;
}
.search-box input::placeholder{color:var(--text-3)}
.search-box .search-btn{
  height:44px;padding:0 20px;border-radius:10px;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#05121A;
  font-weight:700;font-size:14px;white-space:nowrap;
}
.filter-pills{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.filter-pills::-webkit-scrollbar{display:none}
.pill{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  font-size:14px;color:var(--text-2);border:1px solid var(--line);background:rgba(16,26,46,.4);
  cursor:pointer;white-space:nowrap;transition:all .2s var(--ease);
}
.pill:hover{color:var(--text);border-color:rgba(42,223,200,.3)}
.pill.is-active{background:rgba(42,223,200,.14);border-color:var(--line-strong);color:var(--brand)}

/* ---------- sections ---------- */
section.block{padding:52px 0}
@media(min-width:768px){section.block{padding:68px 0}}
.section-head{max-width:760px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:700;margin:0 0 10px;letter-spacing:-.01em}
.section-head p{color:var(--text-2);font-size:15px;margin:0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;color:var(--brand);
  background:rgba(42,223,200,.10);border:1px solid rgba(42,223,200,.26);margin-bottom:14px;
}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:34px}
.faq-group h3{
  font-size:19px;font-weight:600;margin:0 0 14px;display:flex;align-items:center;gap:10px;
}
.faq-group h3 .bar{width:4px;height:18px;border-radius:2px;background:linear-gradient(180deg,var(--brand),transparent)}
.faq-list{display:grid;gap:10px;max-width:900px}
.faq-item{
  border:1px solid var(--line);border-radius:14px;
  background:var(--panel);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item.is-open{border-color:var(--line-strong);background:rgba(20,32,56,.62)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 18px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--text);font-size:16px;font-weight:600;line-height:1.6;min-height:44px;
}
.faq-q .sign{
  flex:0 0 auto;position:relative;width:20px;height:20px;color:var(--brand);
  transition:transform .2s var(--ease);
}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-q .sign::before{left:0;top:9px;width:20px;height:2px}
.faq-q .sign::after{left:9px;top:0;width:2px;height:20px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-q .sign::after{opacity:0}
.faq-a{display:none;padding:0 18px 16px 18px;color:var(--text-2);font-size:15px;line-height:1.78}
.faq-item.is-open .faq-a{display:block}
.faq-item.is-open{position:relative}
.faq-item.is-open::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;
  background:var(--brand);box-shadow:0 0 12px rgba(42,223,200,.5);
}
.faq-a ol,.faq-a ul{margin:10px 0 0;padding-left:20px}
.faq-a li{margin-bottom:6px}

/* ---------- steps mini ---------- */
.hint-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:var(--panel);
  padding:22px;box-shadow:var(--shadow-card);
}
.hint-card h3{font-size:17px;margin:0 0 12px;font-weight:600}
.hint-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.hint-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7}
.hint-list li .sq{width:8px;height:8px;border-radius:2px;background:var(--brand);flex:0 0 auto;margin-top:9px}

/* ---------- contact ---------- */
.contact-wrap{display:grid;gap:22px}
@media(min-width:1024px){.contact-wrap{grid-template-columns:1.15fr .85fr;align-items:start}}
.form-card{
  border:1px solid var(--line);border-radius:var(--radius-block);background:var(--panel-solid);
  padding:24px;box-shadow:var(--shadow-card);
}
@media(min-width:768px){.form-card{padding:30px}}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;background:rgba(9,15,28,.8);border:1px solid var(--line);border-radius:12px;
  color:var(--text);font-size:15px;padding:12px 14px;font-family:inherit;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(42,223,200,.18);
}
.field .tip{font-size:12px;color:var(--text-3);margin-top:6px}
.form-note{font-size:13px;color:var(--text-3);margin-top:12px}
.info-card{
  border:1px solid var(--line);border-radius:var(--radius-card);background:rgba(16,26,46,.42);
  padding:22px;
}
.info-card + .info-card{margin-top:16px}
.info-card h3{font-size:16px;margin:0 0 10px;font-weight:600}
.info-card p{font-size:14px;color:var(--text-2);margin:0;line-height:1.8}
.info-row{display:flex;justify-content:space-between;gap:12px;font-size:14px;padding:10px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:0}
.info-row span:first-child{color:var(--text-3)}
.info-row span:last-child{color:var(--text);font-variant-numeric:tabular-nums}

/* ---------- cover strip ---------- */
.cover-strip{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.cover-strip{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.cover-strip{grid-template-columns:repeat(4,1fr)}}
.cover-tile{
  position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  background:var(--panel-solid);
}
.cover-tile .ratio{position:relative;aspect-ratio:3/4;overflow:hidden}
.cover-tile img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.cover-tile:hover img{transform:scale(1.04)}
.cover-tile figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 14px 14px;
  background:linear-gradient(180deg,transparent,rgba(5,9,15,.92));
  font-size:14px;color:var(--text);font-weight:600;
}

/* ---------- CTA ---------- */
.cta-bar{
  border:1px solid var(--line-strong);border-radius:var(--radius-block);
  background:linear-gradient(120deg,rgba(42,223,200,.14),rgba(20,169,201,.08));
  padding:26px;display:grid;gap:18px;align-items:center;
}
@media(min-width:768px){.cta-bar{grid-template-columns:1fr auto;padding:30px 34px}}
.cta-bar h2{font-size:clamp(20px,2.6vw,26px);margin:0 0 8px;font-weight:700}
.cta-bar p{margin:0;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:639px){.cta-actions .btn{width:100%}}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:48px 0 20px;margin-top:20px}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:4fr 3fr 3fr 2fr}}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;margin:14px 0 14px;max-width:30em}
.footer-col h3{font-size:15px;font-weight:600;margin:0 0 12px;color:var(--text)}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.footer-col a{
  display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px}
.qr-box{
  width:120px;height:120px;border-radius:12px;border:1px solid var(--line);
  background:
    repeating-linear-gradient(0deg,rgba(148,178,224,.16) 0 6px,transparent 6px 12px),
    repeating-linear-gradient(90deg,rgba(148,178,224,.16) 0 6px,transparent 6px 12px),
    rgba(9,15,28,.9);
}
.footer-qr small{display:block;margin-top:10px;font-size:12px;color:var(--text-3);line-height:1.7;max-width:170px}
.footer-bottom{
  margin-top:32px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:12px;color:var(--text-3);
}
.footer-bottom .risk{max-width:56ch}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}