/* roulang page: index */
:root{
  --bg:#07111f;
  --bg-2:#0d1b2d;
  --panel:#0f2138cc;
  --panel-strong:#132845f2;
  --card:#10243d;
  --card-2:#0d1f34;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(121,165,255,.16);
  --text:#eef4ff;
  --muted:#a9b8d1;
  --soft:#7f93b6;
  --brand:#7c9cff;
  --brand-2:#57d6c6;
  --brand-3:#f3b06f;
  --danger:#ff7e8a;
  --shadow:0 20px 50px rgba(1, 8, 20, .35);
  --shadow-soft:0 10px 30px rgba(0,0,0,.18);
  --radius:20px;
  --radius-lg:28px;
  --radius-sm:12px;
  --container:1180px;
  --gap:24px;
  --gap-lg:40px;
  --speed:.28s ease;
  --ring:0 0 0 3px rgba(124,156,255,.28);
  --grad:linear-gradient(135deg, rgba(124,156,255,.96), rgba(87,214,198,.92));
  --grad-soft:linear-gradient(135deg, rgba(124,156,255,.15), rgba(87,214,198,.12));
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(124,156,255,.20), transparent 36%),
    radial-gradient(circle at top right, rgba(87,214,198,.12), transparent 32%),
    linear-gradient(180deg, #08111f 0%, #0a1626 45%, #07111f 100%);
  line-height:1.75;
  min-height:100vh;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
::selection{background:rgba(124,156,255,.28)}
:focus-visible{outline:none;box-shadow:var(--ring)}

.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
}

.skip-link{
  position:absolute;
  left:-9999px;
  top:12px;
  z-index:99;
  padding:12px 16px;
  background:var(--brand);
  color:#08111f;
  border-radius:999px;
}
.skip-link:focus{left:16px}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  backdrop-filter:blur(18px);
  background:linear-gradient(180deg, rgba(8,17,31,.88), rgba(8,17,31,.64));
  border-bottom:1px solid rgba(255,255,255,.08);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:16px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.brand-mark{
  width:44px;
  height:44px;
  border-radius:16px;
  background:var(--grad);
  box-shadow:0 12px 26px rgba(124,156,255,.28);
  position:relative;
  flex:none;
}
.brand-mark:before,
.brand-mark:after{
  content:"";
  position:absolute;
  inset:auto;
  border-radius:999px;
  background:rgba(255,255,255,.82);
}
.brand-mark:before{
  width:16px;height:16px;left:14px;top:10px;
}
.brand-mark:after{
  width:22px;height:8px;left:11px;bottom:11px;opacity:.9;
}
.brand-text{
  display:flex;
  flex-direction:column;
  min-width:0;
}
.brand-text strong{
  font-size:1.05rem;
  letter-spacing:.4px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand-text span{
  font-size:.82rem;
  color:var(--muted);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.nav-wrap{
  display:flex;
  align-items:center;
  gap:14px;
}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:14px;
  background:rgba(255,255,255,.04);
  color:var(--text);
}
.nav-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  margin:4px auto;
  border-radius:2px;
}
.site-nav{
  display:flex;
  align-items:center;
  gap:8px;
}
.site-nav a{
  padding:10px 14px;
  border-radius:999px;
  color:var(--muted);
  transition:transform var(--speed), background var(--speed), color var(--speed), border-color var(--speed), box-shadow var(--speed);
  border:1px solid transparent;
  font-size:.95rem;
}
.site-nav a:hover{
  color:var(--text);
  background:rgba(255,255,255,.05);
  border-color:rgba(255,255,255,.08);
  transform:translateY(-1px);
}
.site-nav a.active{
  color:#07111f;
  background:linear-gradient(135deg, rgba(124,156,255,1), rgba(87,214,198,1));
  box-shadow:0 14px 28px rgba(124,156,255,.24);
}

.hero{
  position:relative;
  overflow:hidden;
  padding:36px 0 14px;
}
.hero-shell{
  position:relative;
  border:1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(180deg, rgba(8,17,31,.28), rgba(8,17,31,.86)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-radius:34px;
  box-shadow:var(--shadow);
  min-height:640px;
  display:grid;
  grid-template-columns:1.16fr .84fr;
  align-items:end;
  overflow:hidden;
}
.hero-shell:before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 18% 18%, rgba(124,156,255,.22), transparent 22%),
    radial-gradient(circle at 82% 22%, rgba(87,214,198,.18), transparent 20%),
    linear-gradient(180deg, rgba(5,10,18,.22), rgba(5,10,18,.55));
  pointer-events:none;
}
.hero-content{
  position:relative;
  z-index:1;
  padding:60px;
  max-width:760px;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.10);
  color:#eef4ff;
  font-size:.9rem;
  margin-bottom:18px;
}
.kicker .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--brand-2);
  box-shadow:0 0 0 4px rgba(87,214,198,.14);
}
.hero h1{
  margin:0;
  font-size:clamp(2.4rem, 5vw, 4.9rem);
  line-height:1.04;
  letter-spacing:.02em;
}
.hero p{
  margin:18px 0 0;
  font-size:1.06rem;
  color:#dbe6f8;
  max-width:58ch;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid transparent;
  transition:transform var(--speed), box-shadow var(--speed), background var(--speed), border-color var(--speed), color var(--speed);
  font-weight:700;
}
.btn-primary{
  color:#07111f;
  background:var(--grad);
  box-shadow:0 16px 32px rgba(124,156,255,.22);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(124,156,255,.26)}
.btn-secondary{
  color:var(--text);
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.10);
}
.btn-secondary:hover{transform:translateY(-2px);background:rgba(255,255,255,.09)}
.btn-ghost{
  color:var(--muted);
  background:transparent;
  border-color:rgba(255,255,255,.10);
}
.btn-ghost:hover{color:var(--text);background:rgba(255,255,255,.05)}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.09);
  color:var(--text);
  font-size:.88rem;
}
.tag i{
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--brand-3);
  display:inline-block;
}

.hero-aside{
  position:relative;
  z-index:1;
  padding:28px 28px 30px 0;
}
.preview-card{
  margin-left:auto;
  width:min(100%, 390px);
  border-radius:28px;
  overflow:hidden;
  background:rgba(8,17,31,.55);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(16px);
}
.preview-media{
  position:relative;
  aspect-ratio:4/5;
  overflow:hidden;
}
.preview-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transform:scale(1.01);
}
.preview-media:after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg, rgba(5,10,18,.08), rgba(5,10,18,.68));
}
.preview-body{
  padding:20px;
}
.preview-body h2{
  margin:0 0 8px;
  font-size:1.22rem;
}
.preview-body p{
  margin:0;
  color:var(--muted);
  font-size:.96rem;
}
.preview-list{
  display:grid;
  gap:10px;
  margin-top:18px;
}
.preview-item{
  display:flex;
  align-items:flex-start;
  gap:10px;
  padding:12px 14px;
  border-radius:16px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
}
.preview-item b{
  display:block;
  font-size:.95rem;
}
.preview-item span{
  color:var(--muted);
  font-size:.88rem;
}

.section{
  padding:28px 0;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:20px;
}
.section-head h2{
  margin:0;
  font-size:clamp(1.5rem, 2.8vw, 2.2rem);
  line-height:1.2;
}
.section-head p{
  margin:0;
  color:var(--muted);
  max-width:62ch;
}

.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}
.metric{
  padding:18px;
  border-radius:22px;
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-soft);
}
.metric strong{
  display:block;
  font-size:1.65rem;
  line-height:1.1;
  margin-bottom:8px;
}
.metric span{
  color:var(--muted);
  font-size:.93rem;
}

.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.card{
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.08);
  border-radius:26px;
  overflow:hidden;
  box-shadow:var(--shadow-soft);
  transition:transform var(--speed), border-color var(--speed), box-shadow var(--speed);
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(124,156,255,.22);
  box-shadow:0 22px 40px rgba(0,0,0,.22);
}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .55s ease;
}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{
  padding:22px;
}
.card-body .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--brand-2);
  font-size:.84rem;
  text-transform:uppercase;
  letter-spacing:.08em;
  margin-bottom:10px;
}
.card-body h3{
  margin:0 0 10px;
  font-size:1.2rem;
}
.card-body p{
  margin:0;
  color:var(--muted);
}
.card-list{
  margin:16px 0 0;
  padding:0;
  list-style:none;
  display:grid;
  gap:10px;
}
.card-list li{
  position:relative;
  padding-left:18px;
  color:#d8e4f9;
}
.card-list li:before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand);
}

.feature-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:stretch;
}
.panel{
  border-radius:28px;
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.panel-inner{
  padding:28px;
}
.panel-image{
  position:relative;
  min-height:100%;
  background:
    linear-gradient(180deg, rgba(8,17,31,.18), rgba(8,17,31,.82)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.panel-image .overlay-card{
  position:absolute;
  left:24px;
  right:24px;
  bottom:24px;
  border-radius:22px;
  padding:18px;
  background:rgba(8,17,31,.64);
  border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(12px);
}
.overlay-card h3{margin:0 0 6px;font-size:1.18rem}
.overlay-card p{margin:0;color:#dbe6f8;font-size:.95rem}
.check-list{
  display:grid;
  gap:12px;
  margin:22px 0 0;
  padding:0;
  list-style:none;
}
.check-list li{
  display:flex;
  gap:10px;
  align-items:flex-start;
  color:#dbe6f8;
}
.check-list li:before{
  content:"✓";
  flex:none;
  width:22px;
  height:22px;
  border-radius:50%;
  display:inline-grid;
  place-items:center;
  background:rgba(87,214,198,.18);
  color:var(--brand-2);
  margin-top:2px;
  font-weight:800;
}
.inline-note{
  margin-top:18px;
  padding:14px 16px;
  border-left:3px solid var(--brand-2);
  background:rgba(87,214,198,.08);
  border-radius:14px;
  color:#dfe8fb;
}

.category-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.category-link{
  display:flex;
  flex-direction:column;
  gap:12px;
  min-height:100%;
  padding:18px;
  border-radius:22px;
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.08);
  transition:transform var(--speed), border-color var(--speed), box-shadow var(--speed);
}
.category-link:hover{
  transform:translateY(-4px);
  border-color:rgba(87,214,198,.24);
  box-shadow:0 20px 35px rgba(0,0,0,.22);
}
.category-link img{
  border-radius:18px;
  aspect-ratio:4/3;
  object-fit:cover;
}
.category-link strong{
  font-size:1.06rem;
}
.category-link span{
  color:var(--muted);
  font-size:.92rem;
}
.category-link em{
  margin-top:auto;
  font-style:normal;
  color:var(--brand-2);
  font-size:.92rem;
}

.list-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.post-card{
  display:flex;
  gap:16px;
  padding:18px;
  border-radius:22px;
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.08);
  transition:transform var(--speed), border-color var(--speed), box-shadow var(--speed);
}
.post-card:hover{
  transform:translateY(-3px);
  border-color:rgba(124,156,255,.22);
  box-shadow:0 20px 34px rgba(0,0,0,.20);
}
.post-thumb{
  width:150px;
  flex:none;
  border-radius:18px;
  overflow:hidden;
}
.post-thumb img{
  width:100%;
  height:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.post-content{
  min-width:0;
  flex:1;
}
.post-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  margin-bottom:10px;
}
.badge{
  display:inline-flex;
  align-items:center;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(124,156,255,.14);
  color:#dbe6ff;
  font-size:.8rem;
  border:1px solid rgba(124,156,255,.18);
}
.time{
  color:var(--soft);
  font-size:.84rem;
}
.post-content h3{
  margin:0 0 10px;
  font-size:1.08rem;
  line-height:1.42;
}
.post-content p{
  margin:0;
  color:var(--muted);
  font-size:.94rem;
}

.faq-grid{
  display:grid;
  gap:14px;
}
.faq-item{
  border-radius:20px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08);
  overflow:hidden;
}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 20px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{
  content:"+";
  color:var(--brand-2);
  font-size:1.2rem;
  line-height:1;
}
.faq-item[open] summary:after{content:"–"}
.faq-item .faq-body{
  padding:0 20px 18px;
  color:var(--muted);
}

.cta{
  padding:28px 0 42px;
}
.cta-shell{
  border-radius:32px;
  padding:32px;
  background:
    linear-gradient(135deg, rgba(124,156,255,.18), rgba(87,214,198,.14)),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.10);
  box-shadow:var(--shadow);
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:20px;
  align-items:center;
}
.cta h2{
  margin:0 0 12px;
  font-size:clamp(1.6rem, 3vw, 2.5rem);
}
.cta p{
  margin:0;
  color:#dce7fa;
  max-width:60ch;
}
.cta-box{
  justify-self:end;
  width:min(100%, 420px);
  padding:20px;
  border-radius:24px;
  background:rgba(8,17,31,.34);
  border:1px solid rgba(255,255,255,.10);
}
.cta-box .actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.cta-box small{
  display:block;
  margin-top:12px;
  color:#dbe7fb;
}

.site-footer{
  border-top:1px solid rgba(255,255,255,.08);
  background:rgba(6,12,22,.72);
  backdrop-filter:blur(12px);
  padding:28px 0 34px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr .8fr;
  gap:24px;
}
.footer-col h3{
  margin:0 0 14px;
  font-size:1.05rem;
}
.footer-col p{
  margin:0;
  color:var(--muted);
}
.footer-links{
  display:grid;
  gap:10px;
}
.footer-links a{
  color:var(--muted);
  transition:color var(--speed), transform var(--speed);
}
.footer-links a:hover{
  color:var(--text);
  transform:translateX(3px);
}
.footer-bottom{
  margin-top:22px;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  color:var(--soft);
  font-size:.92rem;
}

.latest-empty{
  padding:24px;
  border-radius:20px;
  border:1px dashed rgba(255,255,255,.14);
  background:rgba(255,255,255,.03);
  color:#dbe6f8;
  text-align:center;
}

.form-row{
  display:grid;
  grid-template-columns:1fr auto;
  gap:12px;
  align-items:center;
  margin-top:18px;
}
.form-row input{
  width:100%;
  height:48px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.10);
  background:rgba(255,255,255,.05);
  color:var(--text);
  padding:0 16px;
}
.form-row input::placeholder{color:#96a9c9}

.divider{
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
  margin:0;
  border:0;
}

@media (max-width: 1120px){
  .hero-shell,
  .feature-split,
  .cta-shell,
  .footer-grid{
    grid-template-columns:1fr;
  }
  .hero-aside{
    padding:0 28px 30px 28px;
  }
  .preview-card{margin:0 auto; width:min(100%, 460px);}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid,
  .category-grid,
  .list-grid{grid-template-columns:repeat(2,1fr)}
}

@media (max-width: 768px){
  .site-header{position:sticky}
  .nav-toggle{display:inline-grid;place-items:center}
  .site-nav{
    position:absolute;
    left:16px;
    right:16px;
    top:100%;
    margin-top:10px;
    padding:12px;
    background:rgba(8,17,31,.96);
    border:1px solid rgba(255,255,255,.08);
    border-radius:20px;
    box-shadow:var(--shadow);
    display:grid;
    gap:8px;
    transform-origin:top;
    transform:scaleY(0);
    opacity:0;
    pointer-events:none;
    transition:transform var(--speed), opacity var(--speed);
  }
  .site-nav.open{
    transform:scaleY(1);
    opacity:1;
    pointer-events:auto;
  }
  .site-nav a{width:100%;justify-content:center;text-align:center}
  .hero{padding-top:22px}
  .hero-shell{border-radius:26px;min-height:auto}
  .hero-content{padding:28px}
  .hero-aside{padding:0 18px 22px}
  .section{padding:22px 0}
  .metric-grid,
  .card-grid,
  .category-grid,
  .list-grid{
    grid-template-columns:1fr;
  }
  .post-card{flex-direction:column}
  .post-thumb{width:100%}
  .footer-bottom{flex-direction:column}
  .cta-shell{padding:24px}
  .cta-box{justify-self:stretch;width:100%}
  .form-row{grid-template-columns:1fr}
}

@media (max-width: 520px){
  .container{width:min(var(--container), calc(100% - 22px))}
  .header-inner{padding:12px 0}
  .brand-mark{width:40px;height:40px}
  .brand-text strong{font-size:1rem}
  .hero h1{font-size:2.1rem}
  .hero p{font-size:.98rem}
  .btn{width:100%}
  .hero-actions,.cta-box .actions{display:grid}
  .panel-inner,.card-body,.preview-body{padding:18px}
  .faq-item summary{padding:16px}
  .faq-item .faq-body{padding:0 16px 16px}
}

/* roulang page: category2 */
:root {
      --bg: #f5f7fb;
      --bg-soft: #eef3f7;
      --surface: #ffffff;
      --surface-strong: #e8f1ef;
      --text: #10212b;
      --muted: #5f707c;
      --line: #d7e1e8;
      --primary: #134e4a;
      --primary-strong: #0f3d3a;
      --accent: #d97706;
      --accent-soft: #fff1de;
      --shadow: 0 16px 40px rgba(16, 33, 43, 0.08);
      --shadow-soft: 0 10px 24px rgba(16, 33, 43, 0.06);
      --radius: 8px;
      --radius-sm: 6px;
      --container: 1180px;
      --gap: 24px;
      --gap-lg: 32px;
      --gap-xl: 48px;
      --transition: 180ms ease;
    }

    *, *::before, *::after {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      color: var(--text);
      background: linear-gradient(180deg, #f7fafc 0%, var(--bg) 100%);
      font: 16px/1.7 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    button {
      border: 0;
      background: none;
      color: inherit;
      cursor: pointer;
    }

    .container {
      width: min(var(--container), calc(100% - 32px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 30;
      backdrop-filter: blur(18px);
      background: rgba(245, 247, 251, 0.82);
      border-bottom: 1px solid rgba(215, 225, 232, 0.8);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      color: var(--text);
    }

    .brand-mark {
      width: 14px;
      height: 14px;
      border-radius: 4px;
      background: linear-gradient(135deg, var(--primary) 0%, #0f766e 55%, var(--accent) 100%);
      box-shadow: 0 0 0 6px rgba(19, 78, 74, 0.08);
      flex: 0 0 auto;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      min-width: 0;
      line-height: 1.15;
    }

    .brand-text strong {
      font-size: 18px;
      letter-spacing: 0;
      white-space: nowrap;
    }

    .brand-text span {
      color: var(--muted);
      font-size: 12px;
      margin-top: 4px;
      white-space: nowrap;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      gap: 4px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
    }

    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 999px;
      background: var(--text);
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .site-nav a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 14px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid transparent;
    }

    .site-nav a:hover,
    .site-nav a:focus-visible {
      color: var(--primary);
      background: rgba(19, 78, 74, 0.06);
      border-color: rgba(19, 78, 74, 0.16);
      outline: none;
    }

    .site-nav a.active {
      color: #fff;
      background: var(--primary);
      border-color: var(--primary);
      box-shadow: 0 10px 18px rgba(19, 78, 74, 0.18);
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 28px 0 34px;
      background:
        linear-gradient(180deg, rgba(8, 22, 24, 0.46), rgba(8, 22, 24, 0.24)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color: #f8fbfc;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(120deg, rgba(19, 78, 74, 0.42), rgba(217, 119, 6, 0.08));
      pointer-events: none;
    }

    .hero .container {
      position: relative;
      z-index: 1;
    }

    .hero-shell {
      display: grid;
      grid-template-columns: minmax(0, 1.22fr) minmax(280px, 0.78fr);
      gap: 24px;
      align-items: stretch;
      min-height: 520px;
    }

    .hero-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 20px;
      padding: 36px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.16);
      color: #eef7f7;
      font-size: 13px;
      letter-spacing: 0;
    }

    .hero h1 {
      margin: 0;
      font-size: clamp(36px, 5vw, 58px);
      line-height: 1.06;
      letter-spacing: 0;
      max-width: 11ch;
    }

    .hero-lead {
      max-width: 60ch;
      margin: 0;
      color: rgba(248, 251, 252, 0.9);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 600;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background-color var(--transition), color var(--transition);
      white-space: nowrap;
    }

    .btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn:focus-visible,
    .nav-toggle:focus-visible,
    .site-nav a:focus-visible,
    .footer-links a:focus-visible,
    .card-link:focus-visible,
    .mini-link:focus-visible {
      outline: 3px solid rgba(217, 119, 6, 0.28);
      outline-offset: 2px;
    }

    .btn-primary {
      background: #ffffff;
      color: var(--primary-strong);
    }

    .btn-secondary {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.28);
      color: #fff;
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.4);
    }

    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 38px;
      padding: 0 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.11);
      border: 1px solid rgba(255, 255, 255, 0.14);
      color: #f1f7f8;
      font-size: 14px;
      white-space: nowrap;
    }

    .hero-panel {
      align-self: center;
      display: grid;
      grid-template-rows: auto auto;
      gap: 14px;
      padding: 22px;
      border-radius: 20px;
      background: rgba(245, 247, 251, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.14);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(12px);
    }

    .hero-shot {
      position: relative;
      overflow: hidden;
      min-height: 280px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.14);
    }

    .hero-shot img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .hero-caption {
      display: grid;
      gap: 8px;
      padding: 2px 4px 0;
    }

    .hero-caption strong {
      font-size: 18px;
    }

    .hero-caption span {
      color: rgba(241, 247, 248, 0.82);
      font-size: 14px;
    }

    .section {
      padding: 64px 0;
    }

    .section.tight {
      padding-top: 28px;
    }

    .section-head {
      display: grid;
      gap: 10px;
      margin-bottom: 24px;
    }

    .section-head h2 {
      margin: 0;
      font-size: 30px;
      line-height: 1.16;
      letter-spacing: 0;
    }

    .section-head p {
      margin: 0;
      color: var(--muted);
      max-width: 72ch;
    }

    .related-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
    }

    .related-item {
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      gap: 10px;
      padding: 18px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      min-height: 164px;
    }

    .related-item.is-current {
      border-color: rgba(19, 78, 74, 0.35);
      box-shadow: 0 14px 28px rgba(19, 78, 74, 0.08);
      background: linear-gradient(180deg, #ffffff 0%, #f5fbfa 100%);
    }

    .related-item .badge {
      width: fit-content;
      padding: 6px 10px;
      border-radius: 999px;
      background: var(--accent-soft);
      color: #a45a00;
      font-size: 12px;
      font-weight: 700;
    }

    .related-item h3 {
      margin: 0;
      font-size: 20px;
      line-height: 1.2;
    }

    .related-item p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .card-link {
      margin-top: auto;
      color: var(--primary);
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
    }

    .card-link span {
      transition: transform var(--transition);
    }

    .card-link:hover span {
      transform: translateX(2px);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .feature-card {
      display: flex;
      flex-direction: column;
      gap: 14px;
      padding: 22px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      min-height: 210px;
    }

    .feature-icon {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, rgba(19, 78, 74, 0.12), rgba(217, 119, 6, 0.12));
      color: var(--primary);
      font-size: 20px;
      font-weight: 800;
    }

    .feature-card h3 {
      margin: 0;
      font-size: 20px;
      line-height: 1.25;
    }

    .feature-card p {
      margin: 0;
      color: var(--muted);
    }

    .split {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
      gap: 24px;
      align-items: center;
    }

    .split-copy {
      display: grid;
      gap: 16px;
    }

    .stat-list {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .stat {
      padding: 16px;
      border-radius: var(--radius);
      background: var(--bg-soft);
      border: 1px solid var(--line);
    }

    .stat strong {
      display: block;
      font-size: 22px;
      line-height: 1.1;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .stat span {
      color: var(--muted);
      font-size: 14px;
    }

    .media-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 14px;
      align-items: stretch;
    }

    .media-block {
      overflow: hidden;
      border-radius: 16px;
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
    }

    .media-block img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .media-stack {
      display: grid;
      gap: 14px;
    }

    .note-panel {
      display: grid;
      gap: 12px;
      padding: 20px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #ffffff 0%, #f5fbfa 100%);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .note-panel h3 {
      margin: 0;
      font-size: 18px;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 10px;
    }

    .check-list li {
      position: relative;
      padding-left: 24px;
      color: var(--muted);
    }

    .check-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      width: 11px;
      height: 11px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 0 0 4px rgba(19, 78, 74, 0.1);
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .step {
      position: relative;
      padding: 22px 18px 18px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      min-height: 200px;
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: 999px;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .step h3 {
      margin: 0 0 10px;
      font-size: 18px;
    }

    .step p {
      margin: 0;
      color: var(--muted);
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .scenario {
      padding: 20px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      display: grid;
      gap: 12px;
    }

    .scenario h3 {
      margin: 0;
      font-size: 18px;
    }

    .scenario p {
      margin: 0;
      color: var(--muted);
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 12px;
      border-radius: 999px;
      background: var(--bg-soft);
      border: 1px solid var(--line);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
    }

    .faq {
      display: grid;
      gap: 12px;
    }

    details.faq-item {
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }

    details.faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      font-weight: 700;
    }

    details.faq-item summary::-webkit-details-marker {
      display: none;
    }

    details.faq-item summary::after {
      content: "+";
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      border-radius: 999px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--bg-soft);
      color: var(--primary);
      font-size: 18px;
      line-height: 1;
      transition: transform var(--transition), background-color var(--transition);
    }

    details.faq-item[open] summary::after {
      content: "−";
      background: rgba(19, 78, 74, 0.12);
    }

    details.faq-item .faq-body {
      padding: 0 20px 18px;
      color: var(--muted);
    }

    .cta {
      padding: 0 0 72px;
    }

    .cta-panel {
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) auto;
      gap: 20px;
      align-items: center;
      padding: 28px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--primary) 0%, #145f59 62%, #1c6757 100%);
      color: #fff;
      box-shadow: var(--shadow);
    }

    .cta-panel h2 {
      margin: 0 0 10px;
      font-size: 30px;
      line-height: 1.15;
    }

    .cta-panel p {
      margin: 0;
      color: rgba(255, 255, 255, 0.88);
      max-width: 64ch;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .btn-amber {
      background: #fff;
      color: #8a4d00;
    }

    .btn-amber:hover {
      background: #fff8ef;
    }

    .site-footer {
      padding: 42px 0 18px;
      background: #0f2027;
      color: #d7e1e8;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr;
      gap: 24px;
      padding-bottom: 24px;
      border-bottom: 1px solid rgba(215, 225, 232, 0.12);
    }

    .footer-col h3 {
      margin: 0 0 12px;
      font-size: 18px;
      color: #fff;
    }

    .footer-col p {
      margin: 0;
      color: #b8c7cf;
      max-width: 34ch;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: #d7e1e8;
      width: fit-content;
    }

    .footer-links a:hover {
      color: #fff;
    }

    .footer-bottom {
      padding-top: 16px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: #9fb1b9;
      font-size: 14px;
      flex-wrap: wrap;
    }

    .mini-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-weight: 700;
    }

    .mini-link:hover span {
      transform: translateX(2px);
    }

    .divider {
      width: 100%;
      height: 1px;
      background: linear-gradient(90deg, rgba(215, 225, 232, 0), rgba(215, 225, 232, 1), rgba(215, 225, 232, 0));
      margin: 10px 0;
    }

    @media (max-width: 1080px) {
      .hero-shell,
      .split,
      .cta-panel,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-panel {
        max-width: 700px;
      }

      .related-grid,
      .feature-grid,
      .steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .media-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        min-height: 68px;
      }

      .brand-text strong {
        font-size: 17px;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .site-nav {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        right: 16px;
        left: 16px;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        background: rgba(255, 255, 255, 0.98);
        border: 1px solid var(--line);
        border-radius: 16px;
        box-shadow: var(--shadow);
      }

      .site-header.nav-open .site-nav {
        display: flex;
      }

      .site-nav a {
        justify-content: flex-start;
        border-radius: 12px;
      }

      .hero {
        padding-top: 22px;
      }

      .hero-shell {
        min-height: auto;
      }

      .hero-copy {
        padding-top: 12px;
        padding-bottom: 12px;
      }

      .hero h1 {
        max-width: 12ch;
      }

      .section {
        padding: 52px 0;
      }

      .section-head h2 {
        font-size: 26px;
      }

      .related-grid,
      .feature-grid,
      .steps,
      .grid-2,
      .stat-list {
        grid-template-columns: 1fr;
      }

      .cta-panel {
        padding: 22px;
      }

      .cta-actions {
        justify-content: flex-start;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(var(--container), calc(100% - 24px));
      }

      .hero h1 {
        font-size: 34px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .hero-panel {
        padding: 16px;
      }

      .btn {
        width: 100%;
      }

      .hero-actions {
        width: 100%;
      }

      .chip {
        width: 100%;
        justify-content: center;
      }

      .section {
        padding: 44px 0;
      }

      .step,
      .feature-card,
      .related-item,
      .scenario,
      details.faq-item summary,
      details.faq-item .faq-body {
        padding-left: 16px;
        padding-right: 16px;
      }

      .cta-panel {
        padding: 18px;
      }

      .cta-panel h2 {
        font-size: 24px;
      }
    }

/* roulang page: category1 */
:root{
      --bg:#edf3f1;
      --bg-soft:#f6f8f7;
      --surface:#ffffff;
      --surface-2:#e5eeeb;
      --text:#10211d;
      --muted:#5c706a;
      --line:#d4dfdb;
      --primary:#0f766e;
      --primary-strong:#124f4a;
      --accent:#e15b3a;
      --accent-soft:#fff0ea;
      --shadow:0 18px 40px rgba(16,33,29,.12);
      --shadow-soft:0 10px 24px rgba(16,33,29,.08);
      --radius:8px;
      --radius-sm:6px;
      --container:1180px;
      --gap:24px;
      --gap-sm:16px;
      --transition:180ms ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        linear-gradient(180deg, rgba(255,255,255,.72), rgba(255,255,255,.92)),
        radial-gradient(circle at top left, rgba(15,118,110,.08), transparent 34%),
        linear-gradient(180deg, #f6faf9 0%, #edf3f1 100%);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
      line-height:1.6;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }

    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    }

    img{
      display:block;
      max-width:100%;
      height:auto;
    }

    button,
    input,
    textarea{
      font:inherit;
    }

    button{
      border:0;
      background:none;
      padding:0;
      cursor:pointer;
    }

    :focus-visible{
      outline:3px solid rgba(15,118,110,.26);
      outline-offset:2px;
    }

    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(160%) blur(12px);
      background:rgba(245,249,247,.82);
      border-bottom:1px solid rgba(212,223,219,.88);
    }

    .header-inner{
      min-height:74px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }

    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }

    .brand-mark{
      width:40px;
      height:40px;
      border-radius:12px;
      background:
        linear-gradient(135deg, rgba(15,118,110,.96), rgba(225,91,58,.88));
      box-shadow:0 10px 20px rgba(15,118,110,.18);
      position:relative;
      flex:0 0 auto;
    }

    .brand-mark::after{
      content:"";
      position:absolute;
      inset:10px;
      border:1.5px solid rgba(255,255,255,.75);
      border-radius:10px;
    }

    .brand-text{
      display:flex;
      flex-direction:column;
      min-width:0;
    }

    .brand-text strong{
      font-size:1.02rem;
      line-height:1.15;
      letter-spacing:0;
    }

    .brand-text span{
      font-size:.84rem;
      color:var(--muted);
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }

    .nav-wrap{
      display:flex;
      align-items:center;
      gap:14px;
    }

    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
    }

    .site-nav a{
      position:relative;
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      background:transparent;
      white-space:nowrap;
      font-size:.95rem;
    }

    .site-nav a:hover{
      color:var(--primary);
      background:rgba(15,118,110,.06);
      border-color:rgba(15,118,110,.12);
    }

    .site-nav a.active{
      color:var(--primary-strong);
      background:rgba(15,118,110,.12);
      border-color:rgba(15,118,110,.16);
      box-shadow:inset 0 0 0 1px rgba(15,118,110,.04);
    }

    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      align-items:center;
      justify-content:center;
      gap:4px;
      border:1px solid var(--line);
      border-radius:12px;
      background:rgba(255,255,255,.86);
      box-shadow:var(--shadow-soft);
    }

    .nav-toggle span{
      display:block;
      width:18px;
      height:2px;
      border-radius:999px;
      background:var(--primary-strong);
      transform-origin:center;
    }

    main{
      overflow:hidden;
    }

    .hero{
      position:relative;
      padding:34px 0 18px;
    }

    .hero-shell{
      position:relative;
      border:1px solid rgba(255,255,255,.44);
      border-radius:20px;
      overflow:hidden;
      background:
        linear-gradient(135deg, rgba(9,21,19,.72), rgba(9,21,19,.52)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      min-height:560px;
    }

    .hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(4,16,14,.04), rgba(4,16,14,.22));
      pointer-events:none;
    }

    .hero-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
      gap:28px;
      align-items:center;
      padding:42px;
      color:#f5fbf9;
    }

    .hero-copy{
      max-width:640px;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      color:#d7efea;
      font-size:.88rem;
      border:1px solid rgba(255,255,255,.12);
      margin-bottom:18px;
    }

    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:#8af0dc;
      box-shadow:0 0 0 5px rgba(138,240,220,.15);
    }

    h1{
      margin:0;
      font-size:clamp(2rem, 3vw, 3.5rem);
      line-height:1.08;
      letter-spacing:0;
    }

    .hero-copy p{
      margin:18px 0 0;
      max-width:60ch;
      color:rgba(238,248,246,.92);
      font-size:1.03rem;
    }

    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:26px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:600;
      letter-spacing:0;
      transition:transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
    }

    .btn:hover{
      transform:translateY(-1px);
      box-shadow:0 12px 24px rgba(0,0,0,.14);
    }

    .btn:active{
      transform:translateY(0);
      box-shadow:none;
    }

    .btn-primary{
      background:linear-gradient(135deg, var(--accent), #d94f58);
      color:#fff;
      box-shadow:0 12px 22px rgba(225,91,58,.26);
    }

    .btn-secondary{
      background:rgba(255,255,255,.09);
      border-color:rgba(255,255,255,.2);
      color:#f5fbf9;
    }

    .btn-secondary:hover{
      background:rgba(255,255,255,.14);
    }

    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:26px;
    }

    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      color:#edf9f6;
      font-size:.88rem;
    }

    .tag::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:#ffa97f;
    }

    .hero-visual{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:14px;
      align-items:stretch;
      min-height:470px;
    }

    .visual-card,
    .preview-card{
      position:relative;
      overflow:hidden;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.08);
      box-shadow:0 18px 30px rgba(6,16,14,.16);
    }

    .visual-card img,
    .preview-card img{
      width:100%;
      height:100%;
      object-fit:cover;
    }

    .visual-card.big{
      grid-row:span 2;
      min-height:470px;
    }

    .visual-card.small{
      min-height:228px;
    }

    .visual-label{
      position:absolute;
      left:16px;
      right:16px;
      bottom:16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 14px;
      border-radius:14px;
      background:rgba(7,16,15,.68);
      border:1px solid rgba(255,255,255,.12);
      color:#f4fbf8;
      backdrop-filter:blur(10px);
    }

    .visual-label strong{
      display:block;
      font-size:.98rem;
    }

    .visual-label span{
      display:block;
      margin-top:2px;
      color:rgba(238,248,246,.78);
      font-size:.84rem;
    }

    .section{
      padding:24px 0 0;
    }

    .section-band{
      padding:26px 0;
    }

    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:18px;
    }

    .section-head h2{
      margin:0;
      font-size:1.6rem;
      line-height:1.2;
      letter-spacing:0;
    }

    .section-head p{
      margin:0;
      max-width:58ch;
      color:var(--muted);
    }

    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:var(--gap);
    }

    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:var(--gap);
    }

    .card{
      background:rgba(255,255,255,.92);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .card:hover{
      transform:translateY(-2px);
      box-shadow:var(--shadow);
      border-color:rgba(15,118,110,.18);
    }

    .feature-card{
      padding:22px;
      min-height:180px;
    }

    .feature-icon{
      width:46px;
      height:46px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(15,118,110,.16), rgba(225,91,58,.16));
      color:var(--primary-strong);
      margin-bottom:14px;
    }

    .feature-card h3{
      margin:0 0 8px;
      font-size:1.08rem;
      line-height:1.3;
    }

    .feature-card p{
      margin:0;
      color:var(--muted);
    }

    .split{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:var(--gap);
      align-items:stretch;
    }

    .panel{
      background:rgba(255,255,255,.92);
      border:1px solid var(--line);
      border-radius:16px;
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }

    .panel-media{
      position:relative;
      min-height:420px;
      background:#d8e5e1;
    }

    .panel-media img{
      width:100%;
      height:100%;
      object-fit:cover;
    }

    .panel-copy{
      padding:28px;
    }

    .panel-copy h3{
      margin:0;
      font-size:1.36rem;
      line-height:1.25;
    }

    .panel-copy p{
      margin:14px 0 0;
      color:var(--muted);
    }

    .mini-list{
      margin:22px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }

    .mini-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px 15px;
      border-radius:14px;
      background:var(--bg-soft);
      border:1px solid rgba(212,223,219,.8);
    }

    .mini-list b{
      display:block;
      margin-bottom:3px;
      font-size:.98rem;
    }

    .mini-list span{
      display:block;
      color:var(--muted);
      font-size:.94rem;
    }

    .bullet{
      width:10px;
      height:10px;
      margin-top:7px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 5px rgba(225,91,58,.12);
      flex:0 0 auto;
    }

    .preview-grid{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:var(--gap);
    }

    .preview-item{
      display:flex;
      flex-direction:column;
      min-height:100%;
    }

    .preview-image{
      aspect-ratio:4/3;
      overflow:hidden;
      background:#dfe8e5;
      border-bottom:1px solid var(--line);
    }

    .preview-image img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform var(--transition);
    }

    .preview-item:hover .preview-image img{
      transform:scale(1.03);
    }

    .preview-body{
      padding:16px;
    }

    .preview-body h3{
      margin:0 0 8px;
      font-size:1rem;
      line-height:1.35;
    }

    .preview-body p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
    }

    .kicker-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:12px;
    }

    .pill{
      display:inline-flex;
      align-items:center;
      min-height:30px;
      padding:0 10px;
      border-radius:999px;
      border:1px solid rgba(15,118,110,.16);
      background:rgba(15,118,110,.08);
      color:var(--primary-strong);
      font-size:.84rem;
    }

    .steps{
      counter-reset:step;
    }

    .step-card{
      padding:22px;
      display:flex;
      flex-direction:column;
      gap:14px;
    }

    .step-card::before{
      counter-increment:step;
      content:counter(step, decimal-leading-zero);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:48px;
      height:48px;
      border-radius:14px;
      background:linear-gradient(135deg, rgba(15,118,110,.14), rgba(225,91,58,.14));
      color:var(--primary-strong);
      font-weight:700;
      letter-spacing:0;
    }

    .step-card h3{
      margin:0;
      font-size:1.05rem;
    }

    .step-card p{
      margin:0;
      color:var(--muted);
    }

    .step-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:auto;
    }

    .step-tags span{
      display:inline-flex;
      align-items:center;
      min-height:28px;
      padding:0 10px;
      border-radius:999px;
      background:#f3f7f6;
      border:1px solid var(--line);
      color:#3d524d;
      font-size:.84rem;
    }

    .faq-wrap{
      display:grid;
      gap:12px;
    }

    details.faq{
      background:rgba(255,255,255,.92);
      border:1px solid var(--line);
      border-radius:14px;
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }

    details.faq[open]{
      border-color:rgba(15,118,110,.2);
      box-shadow:var(--shadow);
    }

    details.faq summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
      font-weight:600;
    }

    details.faq summary::-webkit-details-marker{
      display:none;
    }

    .faq-icon{
      flex:0 0 auto;
      width:30px;
      height:30px;
      border-radius:999px;
      display:grid;
      place-items:center;
      background:rgba(15,118,110,.1);
      color:var(--primary-strong);
      font-size:1.15rem;
      line-height:1;
      transition:transform var(--transition);
    }

    details[open] .faq-icon{
      transform:rotate(45deg);
    }

    .faq-body{
      padding:0 20px 18px;
      color:var(--muted);
    }

    .cta{
      padding:26px 0 42px;
    }

    .cta-shell{
      padding:28px;
      background:linear-gradient(135deg, rgba(15,118,110,.95), rgba(18,79,74,.96));
      color:#eff9f7;
      border-radius:20px;
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }

    .cta-shell::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(120deg, rgba(255,255,255,.06), transparent 44%),
        linear-gradient(180deg, rgba(255,255,255,.02), rgba(0,0,0,.08));
      pointer-events:none;
    }

    .cta-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1.1fr) auto;
      gap:20px;
      align-items:center;
    }

    .cta h2{
      margin:0;
      font-size:1.7rem;
      line-height:1.2;
    }

    .cta p{
      margin:12px 0 0;
      max-width:60ch;
      color:rgba(240,250,248,.9);
    }

    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }

    .btn-ghost{
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.18);
      color:#f5fbf9;
    }

    .btn-ghost:hover{
      background:rgba(255,255,255,.14);
    }

    .site-footer{
      margin-top:18px;
      padding:34px 0 20px;
      background:#0f1f1c;
      color:#e5f2ef;
    }

    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:26px;
      padding-bottom:22px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }

    .footer-col h3{
      margin:0 0 12px;
      font-size:1rem;
      color:#fff;
    }

    .footer-col p{
      margin:0;
      color:#bbcbc7;
    }

    .footer-links{
      display:grid;
      gap:10px;
    }

    .footer-links a{
      color:#d9e7e3;
      width:fit-content;
    }

    .footer-links a:hover{
      color:#fff;
    }

    .footer-bottom{
      padding-top:16px;
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      color:#9db1ac;
      font-size:.92rem;
    }

    .social-note{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }

    .note-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      color:#eaf6f3;
      font-size:.86rem;
    }

    .note-chip i{
      width:7px;
      height:7px;
      border-radius:50%;
      background:#ffa56f;
      display:inline-block;
    }

    .section-divider{
      margin:34px 0 0;
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(15,118,110,.22), transparent);
    }

    @media (max-width: 1024px){
      .hero-inner{
        grid-template-columns:1fr;
      }

      .hero-visual{
        min-height:auto;
      }

      .grid-3,
      .grid-2,
      .preview-grid,
      .split,
      .cta-inner,
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }

      .preview-grid{
        grid-template-columns:repeat(2,minmax(0,1fr));
      }

      .cta-actions{
        justify-content:flex-start;
      }
    }

    @media (max-width: 768px){
      .header-inner{
        min-height:68px;
      }

      .nav-toggle{
        display:inline-flex;
      }

      .nav-wrap{
        margin-left:auto;
      }

      .site-nav{
        position:absolute;
        left:16px;
        right:16px;
        top:78px;
        display:grid;
        gap:8px;
        padding:12px;
        border-radius:16px;
        background:rgba(248,250,249,.98);
        border:1px solid var(--line);
        box-shadow:var(--shadow);
        opacity:0;
        visibility:hidden;
        transform:translateY(-8px);
        pointer-events:none;
      }

      .nav-wrap.open .site-nav{
        opacity:1;
        visibility:visible;
        transform:translateY(0);
        pointer-events:auto;
      }

      .site-nav a{
        width:100%;
        border-radius:12px;
      }

      .hero{
        padding-top:18px;
      }

      .hero-shell{
        min-height:auto;
      }

      .hero-inner{
        padding:22px;
      }

      .visual-card.big{
        min-height:260px;
      }

      .visual-card.small{
        min-height:180px;
      }

      .grid-3,
      .grid-2,
      .split,
      .cta-inner,
      .footer-grid{
        grid-template-columns:1fr;
      }

      .preview-grid{
        grid-template-columns:1fr;
      }

      .section-head{
        align-items:flex-start;
        flex-direction:column;
      }

      .panel-copy,
      .cta-shell{
        padding:22px;
      }
    }

    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 24px));
      }

      .brand-text span{
        display:none;
      }

      .hero-copy p,
      .panel-copy p,
      .cta p{
        font-size:.98rem;
      }

      .hero-actions,
      .social-note,
      .cta-actions{
        width:100%;
      }

      .btn{
        width:100%;
      }

      .btn-primary,
      .btn-secondary,
      .btn-ghost{
        justify-content:center;
      }

      .hero-visual{
        grid-template-columns:1fr;
      }

      .visual-card.big{
        grid-row:auto;
      }
    }

/* roulang page: category3 */
:root {
      --bg: #0e1418;
      --bg-soft: #121a20;
      --bg-elev: #18222a;
      --panel: rgba(18, 26, 32, 0.86);
      --panel-strong: #162029;
      --text: #ecf3f7;
      --muted: #9eb0ba;
      --faint: #70828d;
      --line: rgba(182, 203, 214, 0.14);
      --line-strong: rgba(182, 203, 214, 0.22);
      --accent: #55d6c2;
      --accent-2: #ffb86b;
      --accent-3: #f06b8b;
      --good: #86d98c;
      --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
      --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.16);
      --radius: 14px;
      --radius-sm: 10px;
      --container: 1180px;
      --gap: 24px;
      --gap-lg: 36px;
      --focus: 0 0 0 3px rgba(85, 214, 194, 0.22);
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      color: var(--text);
      background:
        radial-gradient(circle at top right, rgba(85, 214, 194, 0.12), transparent 24%),
        radial-gradient(circle at left 18%, rgba(240, 107, 139, 0.10), transparent 24%),
        linear-gradient(180deg, #0c1216 0%, #0e1418 48%, #0b1014 100%);
      min-height: 100vh;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

    img {
      max-width: 100%;
      display: block;
      border: 0;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
      color: inherit;
    }

    button {
      border: 0;
      background: none;
      cursor: pointer;
    }

    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    summary:focus-visible {
      outline: none;
      box-shadow: var(--focus);
      border-color: rgba(85, 214, 194, 0.5);
    }

    .container {
      width: min(var(--container), calc(100% - 32px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(14px);
      background: rgba(12, 18, 22, 0.86);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      width: 15px;
      height: 15px;
      border-radius: 4px;
      background: linear-gradient(135deg, var(--accent) 0%, #7be7d0 42%, var(--accent-2) 100%);
      box-shadow: 0 0 0 6px rgba(85, 214, 194, 0.08);
      flex: none;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 2px;
      min-width: 0;
    }

    .brand-text strong {
      font-size: 1.02rem;
      letter-spacing: 0;
      line-height: 1.2;
      white-space: nowrap;
    }

    .brand-text span {
      color: var(--muted);
      font-size: 0.86rem;
      line-height: 1.2;
      white-space: nowrap;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: rgba(255, 255, 255, 0.02);
      align-items: center;
      justify-content: center;
      gap: 4px;
      flex-direction: column;
      padding: 0;
      transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
    }

    .nav-toggle:hover {
      transform: translateY(-1px);
      background: rgba(255, 255, 255, 0.04);
      border-color: var(--line-strong);
    }

    .nav-toggle span {
      width: 18px;
      height: 2px;
      border-radius: 10px;
      background: var(--text);
      display: block;
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .site-nav a {
      padding: 10px 14px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid transparent;
      transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
      white-space: nowrap;
    }

    .site-nav a:hover {
      color: var(--text);
      background: rgba(255, 255, 255, 0.04);
      transform: translateY(-1px);
      border-color: var(--line);
    }

    .site-nav a.active {
      color: #071015;
      background: linear-gradient(135deg, var(--accent) 0%, #79e6d3 100%);
      border-color: transparent;
      font-weight: 700;
      box-shadow: 0 8px 18px rgba(85, 214, 194, 0.18);
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 34px 0 26px;
      border-bottom: 1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(6, 10, 13, 0.28), rgba(6, 10, 13, 0.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(125deg, rgba(8, 14, 18, 0.78) 0%, rgba(8, 14, 18, 0.62) 55%, rgba(8, 14, 18, 0.74) 100%);
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
      gap: 28px;
      align-items: end;
      min-height: 560px;
      padding: 26px 0 18px;
    }

    .hero-copy {
      max-width: 720px;
      padding: 18px 0 12px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      border: 1px solid rgba(85, 214, 194, 0.22);
      background: rgba(85, 214, 194, 0.08);
      color: #c8f5ed;
      font-size: 0.86rem;
      letter-spacing: 0;
    }

    .eyebrow-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(85, 214, 194, 0.12);
    }

    .hero h1 {
      margin: 16px 0 14px;
      font-size: clamp(2.1rem, 3.8vw, 4.4rem);
      line-height: 1.08;
      letter-spacing: 0;
      max-width: 11.5ch;
      text-wrap: balance;
    }

    .hero-lead {
      margin: 0;
      max-width: 58ch;
      color: rgba(236, 243, 247, 0.86);
      font-size: 1.03rem;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
      font-weight: 700;
      white-space: nowrap;
    }

    .btn:hover {
      transform: translateY(-1px);
    }

    .btn-primary {
      color: #071015;
      background: linear-gradient(135deg, var(--accent) 0%, #87ead9 100%);
      box-shadow: 0 16px 34px rgba(85, 214, 194, 0.18);
    }

    .btn-primary:hover {
      box-shadow: 0 18px 38px rgba(85, 214, 194, 0.24);
    }

    .btn-secondary {
      color: var(--text);
      background: rgba(255, 255, 255, 0.03);
      border-color: var(--line);
      backdrop-filter: blur(10px);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.06);
      border-color: var(--line-strong);
    }

    .hero-panel {
      align-self: stretch;
      display: grid;
      gap: 16px;
      grid-template-rows: auto auto 1fr;
    }

    .panel-card {
      background: linear-gradient(180deg, rgba(22, 32, 41, 0.94), rgba(15, 21, 26, 0.94));
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .panel-card .panel-head {
      padding: 18px 18px 0;
    }

    .panel-card .panel-body {
      padding: 18px;
    }

    .hero-preview {
      min-height: 268px;
      background:
        linear-gradient(180deg, rgba(6, 10, 13, 0.16), rgba(6, 10, 13, 0.72)),
        url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat;
      position: relative;
    }

    .hero-preview::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(85, 214, 194, 0.08), transparent 30%),
        linear-gradient(0deg, rgba(0, 0, 0, 0.14), transparent 24%);
      pointer-events: none;
    }

    .hero-preview-copy {
      position: absolute;
      inset: auto 18px 18px 18px;
      z-index: 1;
      display: grid;
      gap: 10px;
      max-width: 28ch;
    }

    .hero-preview-copy strong {
      font-size: 1.14rem;
      line-height: 1.24;
    }

    .hero-preview-copy span {
      color: rgba(236, 243, 247, 0.82);
      font-size: 0.92rem;
    }

    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .kpi {
      padding: 14px 14px 12px;
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--line);
    }

    .kpi strong {
      display: block;
      font-size: 1.25rem;
      line-height: 1.15;
      margin-bottom: 6px;
    }

    .kpi span {
      color: var(--muted);
      font-size: 0.88rem;
    }

    .section {
      padding: 74px 0;
    }

    .section.tight {
      padding-top: 28px;
    }

    .section-head {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: end;
      margin-bottom: 24px;
    }

    .section-head h2 {
      margin: 0;
      font-size: clamp(1.5rem, 2vw, 2.2rem);
      line-height: 1.18;
    }

    .section-head p {
      margin: 0;
      color: var(--muted);
      max-width: 62ch;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .feature {
      padding: 22px;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(22, 32, 41, 0.92), rgba(16, 23, 29, 0.92));
      box-shadow: var(--shadow-soft);
      transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .feature:hover {
      transform: translateY(-3px);
      border-color: var(--line-strong);
      box-shadow: var(--shadow);
    }

    .feature .icon {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(85, 214, 194, 0.18), rgba(240, 107, 139, 0.18));
      border: 1px solid rgba(255, 255, 255, 0.06);
      margin-bottom: 14px;
      color: #d8fff7;
      font-weight: 800;
    }

    .feature h3 {
      margin: 0 0 10px;
      font-size: 1.08rem;
      line-height: 1.3;
    }

    .feature p {
      margin: 0;
      color: var(--muted);
    }

    .split {
      display: grid;
      grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
      gap: 20px;
      align-items: stretch;
    }

    .image-card {
      position: relative;
      border-radius: var(--radius);
      overflow: hidden;
      min-height: 420px;
      border: 1px solid var(--line);
      background: #111a20;
      box-shadow: var(--shadow);
    }

    .image-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: saturate(1.02) contrast(1.02);
    }

    .image-card .overlay {
      position: absolute;
      inset: auto 0 0 0;
      padding: 18px;
      background: linear-gradient(180deg, transparent, rgba(8, 12, 15, 0.88));
    }

    .image-card .overlay strong {
      display: block;
      margin-bottom: 6px;
      font-size: 1.12rem;
    }

    .image-card .overlay span {
      color: rgba(236, 243, 247, 0.84);
      font-size: 0.92rem;
    }

    .content-stack {
      display: grid;
      gap: 16px;
    }

    .step-list {
      display: grid;
      gap: 12px;
    }

    .step {
      display: flex;
      gap: 14px;
      padding: 18px;
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--line);
    }

    .step-num {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #081116;
      background: linear-gradient(135deg, var(--accent) 0%, #82e7d6 100%);
      font-weight: 800;
      flex: none;
      margin-top: 1px;
    }

    .step h3 {
      margin: 0 0 6px;
      font-size: 1rem;
    }

    .step p {
      margin: 0;
      color: var(--muted);
    }

    .catalog-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .catalog-card {
      overflow: hidden;
      border-radius: var(--radius);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(22, 32, 41, 0.94), rgba(15, 22, 28, 0.94));
      box-shadow: var(--shadow-soft);
    }

    .catalog-card figure {
      margin: 0;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #101820;
    }

    .catalog-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.35s ease;
    }

    .catalog-card:hover img {
      transform: scale(1.03);
    }

    .catalog-body {
      padding: 18px;
      display: grid;
      gap: 10px;
    }

    .catalog-body h3 {
      margin: 0;
      font-size: 1.06rem;
    }

    .catalog-body p {
      margin: 0;
      color: var(--muted);
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 30px;
      padding: 0 10px;
      border-radius: 999px;
      border: 1px solid rgba(85, 214, 194, 0.18);
      background: rgba(85, 214, 194, 0.06);
      color: #c8f5ed;
      font-size: 0.84rem;
    }

    .info-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .info {
      padding: 18px;
      border-radius: var(--radius);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--line);
    }

    .info strong {
      display: block;
      font-size: 1.18rem;
      margin-bottom: 6px;
    }

    .info span {
      color: var(--muted);
      font-size: 0.9rem;
    }

    .faq-grid {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--line);
      background: rgba(255, 255, 255, 0.03);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      cursor: pointer;
      font-weight: 700;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: "+";
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
      color: var(--text);
      flex: none;
      transition: transform 0.18s ease, background 0.18s ease;
    }

    .faq-item[open] summary::after {
      content: "–";
      background: rgba(85, 214, 194, 0.12);
    }

    .faq-item .answer {
      padding: 0 20px 18px;
      color: var(--muted);
    }

    .cta {
      padding: 24px;
      border-radius: calc(var(--radius) + 2px);
      border: 1px solid rgba(85, 214, 194, 0.18);
      background:
        linear-gradient(135deg, rgba(85, 214, 194, 0.12), rgba(240, 107, 139, 0.08)),
        rgba(18, 26, 32, 0.92);
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 18px;
      align-items: center;
    }

    .cta h2 {
      margin: 0 0 8px;
      font-size: clamp(1.45rem, 2vw, 2rem);
    }

    .cta p {
      margin: 0;
      color: rgba(236, 243, 247, 0.82);
      max-width: 64ch;
    }

    .cta .hero-actions {
      margin-top: 0;
      justify-content: flex-end;
    }

    .site-footer {
      border-top: 1px solid var(--line);
      padding: 34px 0 22px;
      background: rgba(8, 13, 16, 0.7);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 0.8fr;
      gap: 22px;
    }

    .footer-col h3 {
      margin: 0 0 12px;
      font-size: 1rem;
    }

    .footer-col p {
      margin: 0;
      color: var(--muted);
      max-width: 36ch;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: var(--muted);
      width: fit-content;
      transition: color 0.18s ease, transform 0.18s ease;
    }

    .footer-links a:hover {
      color: var(--text);
      transform: translateX(2px);
    }

    .footer-bottom {
      margin-top: 24px;
      padding-top: 16px;
      border-top: 1px solid var(--line);
      display: flex;
      flex-wrap: wrap;
      gap: 10px 18px;
      color: var(--faint);
      font-size: 0.92rem;
      justify-content: space-between;
    }

    .subtle-line {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
      margin: 0;
      border: 0;
    }

    @media (max-width: 1080px) {
      .hero-inner,
      .split,
      .cta,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .hero-inner {
        min-height: auto;
      }

      .feature-grid,
      .info-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        min-height: 72px;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .site-nav {
        position: absolute;
        top: calc(100% + 10px);
        right: 16px;
        left: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        background: rgba(12, 18, 22, 0.96);
        border: 1px solid var(--line);
        border-radius: 16px;
        box-shadow: var(--shadow);
      }

      .site-nav.open {
        display: flex;
      }

      .site-nav a {
        width: 100%;
        border-radius: 12px;
      }

      .feature-grid,
      .catalog-grid,
      .info-grid,
      .kpi-grid {
        grid-template-columns: 1fr;
      }

      .section {
        padding: 60px 0;
      }

      .section-head {
        flex-direction: column;
        align-items: start;
      }

      .hero {
        padding-top: 24px;
      }

      .hero h1 {
        max-width: 13ch;
      }

      .cta {
        padding: 20px;
      }

      .cta .hero-actions {
        justify-content: flex-start;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(var(--container), calc(100% - 22px));
      }

      .brand-text span {
        display: none;
      }

      .hero {
        background-position: center top;
      }

      .hero h1 {
        font-size: 2rem;
      }

      .hero-lead,
      .section-head p,
      .cta p {
        font-size: 0.98rem;
      }

      .btn {
        width: 100%;
        justify-content: center;
      }

      .hero-actions {
        width: 100%;
      }

      .hero-actions .btn {
        flex: 1 1 100%;
      }

      .image-card {
        min-height: 320px;
      }
    }

/* roulang page: category4 */
:root {
      --color-bg: #f7f3ef;
      --color-surface: #fffaf5;
      --color-surface-strong: #ffffff;
      --color-text: #231f20;
      --color-muted: #756a64;
      --color-primary: #b73745;
      --color-primary-dark: #8f2230;
      --color-secondary: #146c72;
      --color-secondary-dark: #0d4f54;
      --color-accent: #e9b44c;
      --color-line: rgba(35, 31, 32, .12);
      --color-soft: rgba(183, 55, 69, .09);
      --shadow-sm: 0 10px 24px rgba(54, 42, 35, .08);
      --shadow-md: 0 20px 46px rgba(54, 42, 35, .14);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --container: 1160px;
      --section: 88px;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.7;
      color: var(--color-text);
      background:
        radial-gradient(circle at 10% 0%, rgba(233, 180, 76, .16), transparent 28%),
        linear-gradient(180deg, #fffaf5 0%, var(--color-bg) 48%, #fff 100%);
      min-width: 320px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease);
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: none;
    }

    :focus-visible {
      outline: 3px solid rgba(20, 108, 114, .28);
      outline-offset: 3px;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 250, 245, .88);
      border-bottom: 1px solid var(--color-line);
      backdrop-filter: blur(18px);
    }

    .header-inner {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 220px;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      background:
        linear-gradient(135deg, var(--color-primary), var(--color-accent));
      box-shadow: 0 12px 28px rgba(183, 55, 69, .24);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 11px;
      border: 2px solid rgba(255, 255, 255, .78);
      border-radius: 9px;
    }

    .brand-text {
      display: grid;
      gap: 1px;
    }

    .brand-text strong {
      font-size: 18px;
      line-height: 1.2;
      letter-spacing: 0;
    }

    .brand-text span {
      font-size: 12px;
      color: var(--color-muted);
      white-space: nowrap;
    }

    .nav-wrap {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .site-nav a {
      padding: 10px 14px;
      border-radius: 999px;
      color: #4b4240;
      font-size: 15px;
      line-height: 1.2;
    }

    .site-nav a:hover {
      background: rgba(20, 108, 114, .08);
      color: var(--color-secondary-dark);
    }

    .site-nav a.active {
      background: var(--color-text);
      color: #fff;
      box-shadow: 0 10px 22px rgba(35, 31, 32, .16);
    }

    .nav-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 12px;
      border: 1px solid var(--color-line);
      background: var(--color-surface-strong);
    }

    .nav-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 4px auto;
      border-radius: 99px;
      background: var(--color-text);
      transition: transform var(--ease), opacity var(--ease);
    }

    .hero {
      position: relative;
      min-height: 620px;
      display: grid;
      align-items: end;
      overflow: hidden;
      color: #fff;
      background-image:
        linear-gradient(90deg, rgba(20, 18, 18, .82) 0%, rgba(20, 18, 18, .62) 48%, rgba(20, 18, 18, .2) 100%),
        url("/assets/images/backpic/back-3.webp");
      background-size: cover;
      background-position: center;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 160px;
      background: linear-gradient(180deg, transparent, rgba(247, 243, 239, .95));
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      padding: 96px 0 110px;
      max-width: 820px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .22);
      color: rgba(255, 255, 255, .92);
      font-size: 14px;
      margin-bottom: 20px;
      backdrop-filter: blur(10px);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 99px;
      background: var(--color-accent);
    }

    h1 {
      font-size: clamp(38px, 6vw, 68px);
      line-height: 1.08;
      letter-spacing: 0;
      margin-bottom: 22px;
      max-width: 760px;
    }

    .hero-lead {
      max-width: 720px;
      font-size: 19px;
      color: rgba(255, 255, 255, .88);
      margin-bottom: 34px;
    }

    .hero-actions,
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 13px 20px;
      border-radius: 999px;
      font-weight: 700;
      line-height: 1.2;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn-primary {
      background: var(--color-primary);
      color: #fff;
      box-shadow: 0 16px 32px rgba(183, 55, 69, .28);
    }

    .btn-primary:hover {
      background: var(--color-primary-dark);
      box-shadow: 0 18px 38px rgba(183, 55, 69, .34);
    }

    .btn-light {
      color: #fff;
      border-color: rgba(255, 255, 255, .34);
      background: rgba(255, 255, 255, .12);
      backdrop-filter: blur(10px);
    }

    .btn-light:hover {
      background: rgba(255, 255, 255, .2);
    }

    .btn-secondary {
      color: var(--color-secondary-dark);
      border-color: rgba(20, 108, 114, .22);
      background: rgba(20, 108, 114, .08);
    }

    .btn-secondary:hover {
      background: var(--color-secondary);
      color: #fff;
      box-shadow: 0 16px 32px rgba(20, 108, 114, .2);
    }

    main {
      position: relative;
      z-index: 2;
    }

    .section {
      padding: var(--section) 0;
    }

    .section.alt {
      background: rgba(255, 255, 255, .62);
      border-block: 1px solid rgba(35, 31, 32, .06);
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 36px;
    }

    .section-kicker {
      display: inline-block;
      color: var(--color-primary);
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 10px;
    }

    .section-title {
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.18;
      letter-spacing: 0;
      margin-bottom: 14px;
    }

    .section-desc {
      color: var(--color-muted);
      font-size: 17px;
    }

    .trust-strip {
      margin-top: -54px;
      position: relative;
      z-index: 5;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      background: var(--color-surface-strong);
      border: 1px solid var(--color-line);
      border-radius: var(--radius-lg);
      padding: 18px;
      box-shadow: var(--shadow-md);
    }

    .trust-item {
      padding: 18px;
      border-radius: var(--radius-md);
      background: #fbf6f0;
    }

    .trust-item strong {
      display: block;
      font-size: 26px;
      line-height: 1.1;
      color: var(--color-primary);
      margin-bottom: 8px;
    }

    .trust-item span {
      color: var(--color-muted);
      font-size: 14px;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 38px;
      align-items: center;
    }

    .media-card {
      overflow: hidden;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 255, 255, .7);
      background: var(--color-surface-strong);
    }

    .media-card img {
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .media-caption {
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
      color: var(--color-muted);
      font-size: 14px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 5px 10px;
      border-radius: 999px;
      background: var(--color-soft);
      color: var(--color-primary-dark);
      font-weight: 700;
      font-size: 13px;
      white-space: nowrap;
    }

    .check-list {
      display: grid;
      gap: 14px;
      margin-top: 24px;
      list-style: none;
    }

    .check-list li {
      position: relative;
      padding: 16px 18px 16px 46px;
      background: var(--color-surface-strong);
      border: 1px solid var(--color-line);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .check-list li::before {
      content: "✓";
      position: absolute;
      left: 18px;
      top: 16px;
      width: 20px;
      height: 20px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: var(--color-secondary);
      color: #fff;
      font-size: 13px;
      line-height: 1;
      font-weight: 800;
    }

    .check-list strong {
      display: block;
      margin-bottom: 3px;
      font-size: 17px;
    }

    .check-list span {
      color: var(--color-muted);
      font-size: 15px;
    }

    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .card {
      background: var(--color-surface-strong);
      border: 1px solid var(--color-line);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(183, 55, 69, .22);
    }

    .card-icon {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: rgba(20, 108, 114, .1);
      color: var(--color-secondary-dark);
      font-weight: 900;
      margin-bottom: 18px;
    }

    .card h3 {
      font-size: 21px;
      line-height: 1.25;
      margin-bottom: 10px;
    }

    .card p {
      color: var(--color-muted);
      font-size: 15px;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      counter-reset: step;
    }

    .step {
      counter-increment: step;
      position: relative;
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #181413;
      color: #fff;
      min-height: 220px;
      overflow: hidden;
    }

    .step::before {
      content: counter(step, decimal-leading-zero);
      display: inline-flex;
      margin-bottom: 34px;
      color: rgba(255, 255, 255, .48);
      font-weight: 900;
      font-size: 38px;
      line-height: 1;
    }

    .step:nth-child(even) {
      background: var(--color-secondary-dark);
    }

    .step h3 {
      font-size: 20px;
      margin-bottom: 10px;
    }

    .step p {
      color: rgba(255, 255, 255, .78);
      font-size: 15px;
    }

    .scenario-grid {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 22px;
      align-items: stretch;
    }

    .scenario-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      min-height: 430px;
      box-shadow: var(--shadow-md);
    }

    .scenario-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .scenario-list {
      display: grid;
      gap: 14px;
    }

    .scenario-item {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: var(--color-surface-strong);
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-sm);
    }

    .scenario-item h3 {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      margin-bottom: 8px;
    }

    .scenario-item h3 span {
      width: 10px;
      height: 10px;
      border-radius: 99px;
      background: var(--color-accent);
      flex: 0 0 auto;
    }

    .scenario-item p {
      color: var(--color-muted);
      font-size: 15px;
    }

    .security-panel {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .security-item {
      padding: 26px;
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, #ffffff, #fff7ed);
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-sm);
    }

    .security-item h3 {
      font-size: 22px;
      margin-bottom: 10px;
    }

    .security-item p {
      color: var(--color-muted);
      margin-bottom: 16px;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .tag {
      display: inline-flex;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(35, 31, 32, .06);
      color: #4a4240;
      font-size: 13px;
      font-weight: 700;
    }

    .faq-list {
      display: grid;
      gap: 14px;
      max-width: 920px;
    }

    .faq-item {
      border: 1px solid var(--color-line);
      border-radius: var(--radius-lg);
      background: var(--color-surface-strong);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      padding: 20px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      color: var(--color-text);
      font-weight: 800;
      text-align: left;
    }

    .faq-question::after {
      content: "+";
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(183, 55, 69, .1);
      color: var(--color-primary);
      flex: 0 0 auto;
      transition: transform var(--ease);
    }

    .faq-item.open .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 22px;
      color: var(--color-muted);
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .cta {
      padding: 70px 0;
      background:
        linear-gradient(135deg, rgba(35, 31, 32, .9), rgba(20, 108, 114, .86)),
        url("/assets/images/backpic/back-2.webp");
      background-size: cover;
      background-position: center;
      color: #fff;
    }

    .cta-box {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 32px;
      align-items: center;
    }

    .cta h2 {
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.18;
      margin-bottom: 12px;
    }

    .cta p {
      max-width: 720px;
      color: rgba(255, 255, 255, .8);
      font-size: 17px;
    }

    .site-footer {
      background: #171313;
      color: rgba(255, 255, 255, .78);
      padding: 62px 0 26px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.25fr .8fr .8fr;
      gap: 34px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255, 255, 255, .12);
    }

    .footer-col h3 {
      color: #fff;
      font-size: 18px;
      margin-bottom: 14px;
    }

    .footer-col p {
      color: rgba(255, 255, 255, .64);
      max-width: 430px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, .66);
    }

    .footer-links a:hover {
      color: #fff;
      transform: translateX(3px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      padding-top: 22px;
      color: rgba(255, 255, 255, .52);
      font-size: 14px;
    }

    @media (max-width: 1024px) {
      :root {
        --section: 72px;
      }

      .header-inner {
        min-height: 72px;
      }

      .site-nav a {
        padding: 9px 10px;
        font-size: 14px;
      }

      .trust-grid,
      .steps {
        grid-template-columns: repeat(2, 1fr);
      }

      .feature-layout,
      .scenario-grid,
      .cta-box {
        grid-template-columns: 1fr;
      }

      .scenario-image {
        min-height: 320px;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav-toggle {
        display: inline-block;
      }

      .site-nav {
        position: absolute;
        right: 14px;
        top: 66px;
        width: min(320px, calc(100vw - 28px));
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 12px;
        border: 1px solid var(--color-line);
        border-radius: 18px;
        background: rgba(255, 250, 245, .98);
        box-shadow: var(--shadow-md);
      }

      .site-nav.open {
        display: flex;
      }

      .site-nav a {
        padding: 12px 14px;
        border-radius: 12px;
      }

      .brand {
        min-width: 0;
      }

      .brand-text span {
        display: none;
      }

      .hero {
        min-height: 560px;
      }

      .hero-inner {
        padding: 82px 0 96px;
      }

      .hero-lead {
        font-size: 17px;
      }

      .trust-strip {
        margin-top: -38px;
      }

      .card-grid,
      .security-panel,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .media-caption {
        align-items: flex-start;
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      :root {
        --section: 58px;
      }

      .header-inner {
        min-height: 66px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 12px;
      }

      .brand-text strong {
        font-size: 16px;
      }

      .hero {
        min-height: 540px;
        background-position: center;
      }

      h1 {
        font-size: 34px;
      }

      .hero-actions,
      .cta-actions {
        align-items: stretch;
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .trust-grid,
      .steps {
        grid-template-columns: 1fr;
      }

      .trust-item {
        padding: 16px;
      }

      .card,
      .security-item,
      .scenario-item {
        padding: 20px;
      }

      .step {
        min-height: 190px;
      }

      .faq-question {
        padding: 18px;
      }

      .faq-answer {
        padding: 0 18px 18px;
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

/* roulang page: article */
:root{
      --bg:#0f1220;
      --bg-soft:#161a2d;
      --panel:#ffffff;
      --panel-soft:#f7f8fc;
      --text:#182033;
      --muted:#697389;
      --light:#ffffff;
      --line:rgba(24,32,51,.12);
      --line-dark:rgba(255,255,255,.14);
      --primary:#7c3aed;
      --primary-2:#ec4899;
      --primary-dark:#5b21b6;
      --accent:#14b8a6;
      --warning:#f59e0b;
      --radius-lg:28px;
      --radius-md:20px;
      --radius-sm:14px;
      --shadow-lg:0 28px 70px rgba(20,24,42,.22);
      --shadow-md:0 18px 40px rgba(20,24,42,.14);
      --shadow-sm:0 10px 24px rgba(20,24,42,.08);
      --container:1180px;
      --ease:all .22s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 0%, rgba(124,58,237,.12), transparent 34%),
        radial-gradient(circle at 90% 15%, rgba(236,72,153,.11), transparent 30%),
        linear-gradient(180deg,#fbfbff 0%,#f2f4fa 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0;background:none}
    ::selection{background:rgba(124,58,237,.18)}
    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(24,32,51,.08);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:13px;
      min-width:230px;
      border-radius:18px;
      outline:none;
    }
    .brand:focus-visible,.site-nav a:focus-visible,.btn:focus-visible,.nav-toggle:focus-visible{
      box-shadow:0 0 0 4px rgba(124,58,237,.18);
      outline:2px solid rgba(124,58,237,.45);
      outline-offset:3px;
    }
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:16px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.35),rgba(255,255,255,0)),
        linear-gradient(135deg,var(--primary),var(--primary-2));
      position:relative;
      box-shadow:0 14px 28px rgba(124,58,237,.25);
      flex:0 0 auto;
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:12px;
      border-radius:10px;
      border:2px solid rgba(255,255,255,.82);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.22}
    .brand-text strong{font-size:18px;letter-spacing:.2px;color:#16172a}
    .brand-text span{font-size:12px;color:var(--muted);margin-top:3px}
    .nav-wrap{display:flex;align-items:center;gap:12px}
    .site-nav{
      display:flex;
      align-items:center;
      gap:6px;
      padding:8px;
      background:rgba(247,248,252,.86);
      border:1px solid rgba(24,32,51,.08);
      border-radius:999px;
    }
    .site-nav a{
      padding:10px 15px;
      border-radius:999px;
      font-size:14px;
      color:#3a4258;
      transition:var(--ease);
      white-space:nowrap;
    }
    .site-nav a:hover{
      background:#fff;
      color:var(--primary-dark);
      box-shadow:var(--shadow-sm);
      transform:translateY(-1px);
    }
    .site-nav a.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 12px 26px rgba(124,58,237,.24);
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:#fff;
      border:1px solid var(--line);
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      transition:var(--ease);
    }
    .nav-toggle span{
      width:20px;
      height:2px;
      border-radius:999px;
      background:#20263a;
      transition:var(--ease);
    }
    .article-hero{
      position:relative;
      overflow:hidden;
      color:#fff;
      background:
        linear-gradient(115deg,rgba(15,18,32,.92),rgba(49,25,89,.82) 48%,rgba(236,72,153,.64)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .article-hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 20% 20%,rgba(255,255,255,.16),transparent 26%),
        linear-gradient(180deg,rgba(15,18,32,0),rgba(15,18,32,.42));
      pointer-events:none;
    }
    .article-hero-inner{
      position:relative;
      min-height:420px;
      display:grid;
      grid-template-columns:1fr;
      align-items:end;
      padding:82px 0 62px;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:10px;
      color:rgba(255,255,255,.72);
      font-size:14px;
      margin-bottom:22px;
    }
    .breadcrumb a{transition:var(--ease)}
    .breadcrumb a:hover{color:#fff}
    .breadcrumb span{opacity:.75}
    .article-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      width:max-content;
      max-width:100%;
      padding:9px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.13);
      border:1px solid rgba(255,255,255,.22);
      color:#fff;
      font-size:13px;
      margin-bottom:18px;
      backdrop-filter:blur(10px);
    }
    .article-kicker:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--accent);
      box-shadow:0 0 0 5px rgba(20,184,166,.18);
    }
    .article-hero h1{
      max-width:900px;
      font-size:clamp(34px,5.4vw,64px);
      line-height:1.08;
      letter-spacing:-1.2px;
      margin-bottom:20px;
    }
    .article-summary{
      max-width:820px;
      color:rgba(255,255,255,.82);
      font-size:18px;
      line-height:1.85;
      margin-bottom:28px;
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.2);
      color:rgba(255,255,255,.86);
      font-size:14px;
      backdrop-filter:blur(12px);
    }
    .main-shell{
      padding:64px 0 84px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:28px;
      align-items:start;
    }
    .content-card,.aside-card,.notice-card,.related-panel,.cta-band{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(24,32,51,.09);
      box-shadow:var(--shadow-sm);
      border-radius:var(--radius-lg);
    }
    .content-card{
      overflow:hidden;
    }
    .article-cover{
      position:relative;
      height:315px;
      overflow:hidden;
      background:#dfe3ee;
    }
    .article-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      filter:saturate(1.05) contrast(1.02);
    }
    .article-cover:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 42%,rgba(15,18,32,.58));
    }
    .cover-caption{
      position:absolute;
      left:28px;
      right:28px;
      bottom:24px;
      z-index:1;
      color:#fff;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      font-size:13px;
      font-weight:700;
      background:rgba(255,255,255,.92);
      color:var(--primary-dark);
      box-shadow:0 10px 22px rgba(0,0,0,.12);
    }
    .badge.dark{
      background:rgba(22,26,45,.82);
      color:#fff;
      border:1px solid rgba(255,255,255,.18);
    }
    .article-body{
      padding:38px;
      font-size:17px;
      color:#273044;
    }
    .article-body h2,.article-body h3,.article-body h4{
      color:#151a2c;
      line-height:1.35;
      margin:34px 0 16px;
      letter-spacing:-.2px;
    }
    .article-body h2{
      font-size:30px;
      padding-left:16px;
      border-left:5px solid var(--primary);
    }
    .article-body h3{font-size:24px}
    .article-body h4{font-size:19px}
    .article-body p{margin:16px 0}
    .article-body a{
      color:var(--primary-dark);
      font-weight:700;
      border-bottom:1px solid rgba(124,58,237,.28);
      transition:var(--ease);
    }
    .article-body a:hover{
      color:var(--primary-2);
      border-bottom-color:rgba(236,72,153,.45);
    }
    .article-body ul,.article-body ol{
      margin:18px 0 18px 22px;
      padding-left:8px;
    }
    .article-body li{margin:10px 0}
    .article-body blockquote{
      margin:28px 0;
      padding:22px 24px;
      border-radius:20px;
      background:linear-gradient(135deg,rgba(124,58,237,.09),rgba(236,72,153,.08));
      border:1px solid rgba(124,58,237,.14);
      color:#30384e;
    }
    .article-body img{
      border-radius:22px;
      margin:24px auto;
      box-shadow:var(--shadow-md);
    }
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border-radius:18px;
      margin:24px 0;
      border:1px solid var(--line);
    }
    .article-body th,.article-body td{
      padding:14px 16px;
      border-bottom:1px solid var(--line);
      text-align:left;
    }
    .article-body th{
      background:#f4f1ff;
      color:#221a44;
    }
    .article-body tr:last-child td{border-bottom:0}
    .empty-state{
      padding:56px 38px;
      text-align:center;
    }
    .empty-state h2{
      font-size:30px;
      margin-bottom:12px;
      color:#161a2d;
    }
    .empty-state p{
      color:var(--muted);
      margin-bottom:24px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:46px;
      padding:12px 18px;
      border-radius:999px;
      font-weight:800;
      transition:var(--ease);
      border:1px solid transparent;
      text-align:center;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 14px 28px rgba(124,58,237,.24);
    }
    .btn-primary:hover{
      transform:translateY(-2px);
      box-shadow:0 18px 36px rgba(124,58,237,.32);
    }
    .btn-ghost{
      color:#2b3150;
      background:#fff;
      border-color:var(--line);
    }
    .btn-ghost:hover{
      color:var(--primary-dark);
      border-color:rgba(124,58,237,.28);
      transform:translateY(-2px);
      box-shadow:var(--shadow-sm);
    }
    .sidebar{
      position:sticky;
      top:104px;
      display:grid;
      gap:18px;
    }
    .aside-card{
      padding:24px;
      overflow:hidden;
    }
    .aside-card h2,.aside-card h3{
      font-size:20px;
      line-height:1.35;
      margin-bottom:12px;
      color:#151a2c;
    }
    .aside-card p{
      color:var(--muted);
      font-size:14px;
      margin-bottom:18px;
    }
    .mini-cover{
      border-radius:22px;
      overflow:hidden;
      margin-bottom:18px;
      position:relative;
      aspect-ratio:16/10;
      background:#eceff7;
    }
    .mini-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:var(--ease);
    }
    .aside-card:hover .mini-cover img{transform:scale(1.04)}
    .check-list{
      list-style:none;
      display:grid;
      gap:12px;
      margin-top:16px;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#394158;
      font-size:14px;
    }
    .check-list li:before{
      content:"";
      width:18px;
      height:18px;
      margin-top:3px;
      border-radius:50%;
      background:
        linear-gradient(135deg,var(--accent),#38bdf8);
      box-shadow:0 8px 16px rgba(20,184,166,.22);
      flex:0 0 auto;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:9px;
      margin-top:16px;
    }
    .tag-cloud a,.tag-cloud span{
      padding:8px 11px;
      border-radius:999px;
      background:#f3f1ff;
      color:#51308f;
      font-size:13px;
      border:1px solid rgba(124,58,237,.12);
      transition:var(--ease);
    }
    .tag-cloud a:hover{
      background:#fff;
      color:var(--primary-dark);
      transform:translateY(-1px);
      box-shadow:var(--shadow-sm);
    }
    .notice-card{
      margin-top:28px;
      padding:28px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:24px;
      align-items:center;
      background:
        linear-gradient(135deg,rgba(255,255,255,.92),rgba(247,248,252,.9));
    }
    .notice-card h2{
      font-size:26px;
      line-height:1.35;
      margin-bottom:10px;
    }
    .notice-card p{color:var(--muted)}
    .notice-list{
      display:grid;
      gap:12px;
      list-style:none;
    }
    .notice-list li{
      padding:14px 16px;
      border-radius:18px;
      background:#fff;
      border:1px solid rgba(24,32,51,.08);
      color:#3a4258;
      box-shadow:0 8px 18px rgba(20,24,42,.05);
    }
    .related-panel{
      margin-top:28px;
      padding:30px;
    }
    .section-title{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:end;
      margin-bottom:20px;
    }
    .section-title h2{
      font-size:28px;
      line-height:1.3;
      letter-spacing:-.3px;
    }
    .section-title p{
      color:var(--muted);
      max-width:560px;
      font-size:15px;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .related-card{
      min-height:150px;
      padding:18px;
      border-radius:22px;
      background:#fff;
      border:1px solid rgba(24,32,51,.08);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .related-card:before{
      content:"";
      position:absolute;
      width:90px;
      height:90px;
      right:-36px;
      top:-38px;
      border-radius:50%;
      background:linear-gradient(135deg,rgba(124,58,237,.16),rgba(236,72,153,.14));
    }
    .related-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
      border-color:rgba(124,58,237,.22);
    }
    .related-card strong{
      position:relative;
      display:block;
      font-size:17px;
      color:#171c31;
      margin-bottom:8px;
    }
    .related-card span{
      position:relative;
      display:block;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }
    .faq-section{
      padding:78px 0;
      background:
        radial-gradient(circle at 88% 15%,rgba(236,72,153,.12),transparent 28%),
        linear-gradient(180deg,rgba(255,255,255,.4),rgba(255,255,255,.72));
      border-top:1px solid rgba(24,32,51,.07);
      border-bottom:1px solid rgba(24,32,51,.07);
    }
    .faq-grid{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:28px;
      align-items:start;
    }
    .faq-intro{
      padding:30px;
      border-radius:var(--radius-lg);
      background:#15192c;
      color:#fff;
      box-shadow:var(--shadow-md);
    }
    .faq-intro h2{
      font-size:32px;
      line-height:1.25;
      margin-bottom:14px;
    }
    .faq-intro p{color:rgba(255,255,255,.72)}
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      padding:22px 24px;
      border-radius:22px;
      background:#fff;
      border:1px solid rgba(24,32,51,.08);
      box-shadow:0 12px 26px rgba(20,24,42,.06);
    }
    .faq-item h3{
      font-size:18px;
      line-height:1.45;
      margin-bottom:8px;
      color:#171c31;
    }
    .faq-item p{
      color:var(--muted);
      font-size:15px;
    }
    .cta-band{
      margin:72px auto 0;
      padding:34px;
      background:
        linear-gradient(135deg,rgba(22,26,45,.96),rgba(58,34,105,.94)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color:#fff;
      overflow:hidden;
      position:relative;
    }
    .cta-band:before{
      content:"";
      position:absolute;
      inset:auto -80px -120px auto;
      width:300px;
      height:300px;
      border-radius:50%;
      background:rgba(236,72,153,.22);
      filter:blur(4px);
    }
    .cta-inner{
      position:relative;
      display:flex;
      justify-content:space-between;
      gap:28px;
      align-items:center;
    }
    .cta-band h2{
      font-size:30px;
      line-height:1.3;
      margin-bottom:8px;
    }
    .cta-band p{
      color:rgba(255,255,255,.74);
      max-width:720px;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      flex:0 0 auto;
    }
    .site-footer{
      background:#0f1220;
      color:#fff;
      padding:62px 0 28px;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .8fr;
      gap:28px;
      margin-bottom:36px;
    }
    .footer-col{
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.08);
    }
    .footer-col h3{
      font-size:18px;
      margin-bottom:12px;
      color:#fff;
    }
    .footer-col p{
      color:rgba(255,255,255,.66);
      font-size:14px;
      line-height:1.8;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.68);
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(4px);
    }
    .footer-bottom{
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.1);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.55);
      font-size:13px;
    }
    @media (max-width:1024px){
      .site-nav a{padding:9px 11px;font-size:13px}
      .article-layout{grid-template-columns:1fr}
      .sidebar{position:static;grid-template-columns:repeat(2,1fr)}
      .related-grid{grid-template-columns:repeat(2,1fr)}
      .faq-grid{grid-template-columns:1fr}
      .notice-card{grid-template-columns:1fr}
      .cta-inner{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-col:first-child{grid-column:1/-1}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .header-inner{min-height:70px}
      .brand{min-width:auto}
      .brand-text span{display:none}
      .nav-toggle{display:flex}
      .site-nav{
        position:absolute;
        left:14px;
        right:14px;
        top:76px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:24px;
        padding:12px;
        background:rgba(255,255,255,.96);
        box-shadow:var(--shadow-lg);
      }
      .site-nav.open{display:flex}
      .site-nav a{
        border-radius:16px;
        padding:13px 15px;
      }
      .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
      .nav-toggle.open span:nth-child(2){opacity:0}
      .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
      .article-hero-inner{min-height:360px;padding:62px 0 42px}
      .article-summary{font-size:16px}
      .main-shell{padding:42px 0 62px}
      .article-cover{height:238px}
      .article-body{padding:28px;font-size:16px}
      .article-body h2{font-size:25px}
      .sidebar{grid-template-columns:1fr}
      .related-grid{grid-template-columns:1fr}
      .faq-section{padding:54px 0}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .brand-mark{width:40px;height:40px;border-radius:14px}
      .brand-text strong{font-size:16px}
      .article-hero h1{font-size:34px}
      .breadcrumb{font-size:13px}
      .article-meta{gap:8px}
      .meta-pill{width:100%;justify-content:center}
      .article-cover{height:205px}
      .cover-caption{left:18px;right:18px;bottom:18px}
      .article-body{padding:22px}
      .notice-card,.related-panel,.cta-band{padding:22px}
      .section-title{display:block}
      .section-title h2{font-size:24px;margin-bottom:8px}
      .faq-intro{padding:24px}
      .faq-intro h2{font-size:26px}
      .cta-actions,.cta-actions .btn{width:100%}
      .footer-bottom{display:grid}
    }