/* roulang page: index */
:root{
  --deep:#06111F;
  --deep2:#0B1B31;
  --panel:#08172B;
  --aqua:#4DE1FF;
  --mint:#5CE6B8;
  --text:#EAF6FF;
  --muted:#9DB2C8;
  --line:rgba(120,190,255,.18);
  --line-strong:rgba(77,225,255,.5);
  --glass:rgba(12,32,54,.62);
  --glow:rgba(77,225,255,.45);
  --warn:#F5B95C;
  --danger:#FF7A7A;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 32px rgba(0,0,0,.35);
  --shadow-hover:0 16px 44px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--deep);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:
    linear-gradient(rgba(77,225,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,225,255,.045) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}
body::after{
  content:"";
  position:fixed;
  top:-30%;
  left:-10%;
  width:70%;
  height:120%;
  background:linear-gradient(120deg, rgba(77,225,255,.10), transparent 60%);
  transform:rotate(-8deg);
  pointer-events:none;
  z-index:0;
}
.page-wrap{position:relative;z-index:1}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{line-height:1.28;font-weight:800;margin:0}
p{margin:0}
.container-x{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}
@media (max-width:520px){.container-x{padding:0 18px}}

/* ---------- 顶部信息条 ---------- */
.topbar{
  height:38px;
  background:rgba(6,17,31,.92);
  border-bottom:1px solid rgba(77,225,255,.14);
  font-size:12.5px;
  color:var(--muted);
}
.topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar-domain{letter-spacing:.03em;color:#CFE4F5;font-weight:600}
.topbar-tip{display:flex;align-items:center;gap:8px}
.topbar-actions{display:flex;align-items:center;gap:18px}
.topbar-actions a{color:#CFE4F5;transition:color .18s ease-out}
.topbar-actions a:hover{color:var(--aqua)}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 3px rgba(92,230,184,.16);display:inline-block}
@media (max-width:900px){.topbar-tip{display:none}}
@media (max-width:520px){.topbar-actions .only-lg{display:none}}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(7,20,36,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(77,225,255,.22);
  box-shadow:0 1px 0 rgba(77,225,255,.10),0 12px 30px rgba(0,0,0,.35);
}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16.5px;letter-spacing:.01em;color:var(--text)}
.brand:hover{color:var(--aqua)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  background:linear-gradient(140deg,#4DE1FF,#5CE6B8 70%);
  display:grid;place-items:center;
  box-shadow:0 0 0 1px rgba(77,225,255,.5),0 8px 22px rgba(77,225,255,.28);
  color:#04121F;font-size:15px;font-weight:900;
}
.brand-text{white-space:nowrap}
@media (max-width:520px){.brand-text{font-size:15px;white-space:normal;line-height:1.2;max-width:180px}}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--muted);
  padding:6px 0;
  transition:color .18s ease-out;
}
.nav-link:hover{color:var(--text)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#4DE1FF,#5CE6B8);
  box-shadow:0 0 12px rgba(77,225,255,.85);
}
.nav-link.active::before{
  content:"";
  position:absolute;left:-10px;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;background:var(--aqua);
  box-shadow:0 0 10px rgba(77,225,255,.9);
}
.nav-cta{display:flex;align-items:center;gap:14px}
.burger{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);
  background:rgba(10,26,46,.7);
  align-items:center;justify-content:center;
  cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:var(--frost);border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--frost);border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-cta .desk-only{display:none}
  .burger{display:flex}
}
@media (max-width:520px){.nav-inner{height:64px}}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(4,12,22,.97);
  backdrop-filter:blur(18px);
  transform:translateX(100%);
  transition:transform .26s ease-out;
  display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:transparent;color:var(--frost);font-size:20px;cursor:pointer}
.drawer-body{flex:1;overflow-y:auto;padding:22px 20px}
.drawer-link{display:block;padding:16px 4px;font-size:19px;font-weight:700;color:var(--frost);border-bottom:1px solid rgba(120,190,255,.12)}
.drawer-link.active{color:var(--aqua)}
.drawer-foot{padding:18px 20px;border-top:1px solid var(--line)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:13px;
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{
  color:#04121F;
  background:linear-gradient(120deg,#8CF2FF,#4DE1FF 45%,#5CE6B8);
  box-shadow:0 0 0 1px rgba(77,225,255,.5),0 10px 30px rgba(77,225,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(77,225,255,.85),0 16px 40px rgba(77,225,255,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(77,225,255,.45),0 6px 18px rgba(77,225,255,.25)}
.btn-ghost{
  color:var(--frost);
  background:rgba(10,26,46,.6);
  border-color:rgba(120,190,255,.28);
}
.btn-ghost:hover{background:rgba(20,46,76,.85);border-color:var(--line-strong);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px}
.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--aqua);outline-offset:2px;
}
.btn-block{width:100%}

/* ---------- 通用卡片与标签 ---------- */
.card{
  position:relative;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--glass);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.card::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(77,225,255,.55),transparent);
}
.card-hover:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-hover),0 0 24px rgba(77,225,255,.16)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  border:1px solid rgba(120,190,255,.28);
  background:rgba(10,30,52,.78);
  color:#BFE0F5;
}
.badge-aqua{border-color:rgba(77,225,255,.55);color:var(--aqua);background:rgba(9,38,62,.85);box-shadow:0 0 16px rgba(77,225,255,.18)}
.badge-mint{border-color:rgba(92,230,184,.5);color:var(--mint);background:rgba(10,44,42,.7)}
.badge-warn{border-color:rgba(245,185,92,.45);color:var(--warn);background:rgba(46,34,12,.6)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.08em;color:var(--aqua);
  text-transform:none;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,#4DE1FF,transparent)}
.section-title{font-size:clamp(1.5rem,2.6vw,2.15rem);letter-spacing:-.01em}
.section-sub{color:var(--muted);font-size:15.5px;max-width:720px}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(77,225,255,.35),transparent)}
.num-tab{font-variant-numeric:tabular-nums}

/* ---------- Hero ---------- */
.hero{padding:64px 0 72px}
@media (max-width:768px){.hero{padding:44px 0 56px}}
.hero h1{font-size:clamp(2rem,4vw,3.5rem);letter-spacing:-.015em}
@media (max-width:768px){.hero h1{font-size:2rem}}
.hero-sub{color:#C7DCF0;font-size:17px;max-width:600px;margin-top:18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:40px;padding-top:26px;border-top:1px solid rgba(120,190,255,.16)}
.metric-num{font-size:24px;font-weight:800;color:var(--frost);font-variant-numeric:tabular-nums}
.metric-label{font-size:13px;color:var(--muted);margin-top:2px}
.hero-panel{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  min-height:420px;
  background:
    linear-gradient(180deg,rgba(6,17,31,.35),rgba(6,17,31,.92)),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-panel-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(77,225,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(77,225,255,.06) 1px,transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.hero-card{
  position:relative;
  margin:26px;
  border-radius:16px;
  border:1px solid rgba(120,190,255,.24);
  background:rgba(8,24,44,.82);
  backdrop-filter:blur(12px);
  padding:18px 20px;
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.status-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13.5px;color:var(--muted)}
.status-row + .status-row{margin-top:12px;padding-top:12px;border-top:1px solid rgba(120,190,255,.14)}
.status-val{color:var(--frost);font-weight:600}
.float-badge{
  position:absolute;right:22px;bottom:26px;
  padding:10px 16px;border-radius:14px;
  border:1px solid rgba(77,225,255,.55);
  background:rgba(9,34,58,.9);
  box-shadow:0 0 26px rgba(77,225,255,.35);
  font-size:13px;font-weight:700;color:var(--aqua);
}
@media (max-width:1024px){.hero-panel{min-height:340px}}

/* ---------- 对比表 ---------- */
.cmp-scroll{
  overflow-x:auto;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:rgba(8,24,44,.7);
  box-shadow:var(--shadow);
}
.cmp-table{width:100%;min-width:900px;border-collapse:separate;border-spacing:0}
.cmp-table th,
.cmp-table td{
  padding:16px 20px;text-align:left;font-size:14.5px;white-space:nowrap;
  border-bottom:1px solid rgba(120,190,255,.12);
}
.cmp-table thead th{
  background:#0A1E36;color:var(--frost);font-weight:700;font-size:14px;
  position:sticky;top:0;z-index:3;
}
.cmp-table thead th:first-child{left:0;z-index:4}
.cmp-table tbody td{color:#CFE4F5}
.cmp-table tbody td:first-child,
.cmp-table thead th:first-child{
  position:sticky;left:0;z-index:2;background:#08172B;color:var(--muted);font-weight:600;
}
.cmp-table tbody tr{transition:background-color .18s ease-out}
.cmp-table tbody tr:hover td{background:rgba(77,225,255,.07)}
.cmp-table tbody tr:hover td:first-child{background:#0C2138}
.cmp-table tbody tr:last-child td{border-bottom:none}
.cmp-featured{background:rgba(77,225,255,.075) !important}
.cmp-table thead th.cmp-featured{box-shadow:inset 0 3px 0 0 var(--aqua);color:var(--aqua)}
.rec-tag{
  display:inline-block;margin-left:6px;padding:1px 8px;border-radius:999px;
  font-size:11px;font-weight:700;color:#04121F;background:linear-gradient(120deg,#4DE1FF,#5CE6B8);
}
.cmp-note{font-size:13px;color:var(--muted);margin-top:14px}

/* ---------- 等级阶梯 ---------- */
.step-card{padding:24px;display:flex;gap:20px;align-items:flex-start}
.step-index{
  flex:none;width:56px;height:56px;border-radius:16px;
  display:grid;place-items:center;
  font-size:19px;font-weight:800;color:var(--aqua);
  background:rgba(9,34,58,.85);
  border:1px solid rgba(77,225,255,.35);
  box-shadow:0 0 22px rgba(77,225,255,.18);
  font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:1.22rem}
.step-card p{color:var(--muted);font-size:14.5px;margin-top:8px}
.step-link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;color:var(--aqua);font-weight:600}
.step-link:hover{gap:10px}
.step-card.is-top{border-color:rgba(77,225,255,.45);box-shadow:var(--shadow-hover),0 0 30px rgba(77,225,255,.14)}

/* ---------- 锁定内容卡 ---------- */
.lock-card{overflow:hidden;border-radius:var(--radius-lg)}
.lock-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#0A1F38,#0E2E4C)}
.lock-media img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) brightness(.8);transition:transform .3s ease-out,filter .3s ease-out}
.lock-card:hover .lock-media img{transform:scale(1.04);filter:saturate(1) brightness(.95)}
.lock-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,17,31,.15),rgba(6,17,31,.86));
  display:flex;align-items:flex-end;justify-content:space-between;padding:14px;
}
.lock-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:999px;font-size:11.5px;font-weight:700;
  border:1px solid rgba(120,190,255,.4);background:rgba(6,20,36,.8);color:#DCEEFB;
}
.lock-icon{
  width:34px;height:34px;border-radius:11px;flex:none;
  display:grid;place-items:center;
  background:rgba(6,20,36,.85);border:1px solid rgba(77,225,255,.45);
  box-shadow:0 0 18px rgba(77,225,255,.22);
}
.lock-body{padding:18px 20px 20px}
.lock-body h3{font-size:16.5px}
.lock-body p{color:var(--muted);font-size:14px;margin-top:8px;min-height:44px}
.lock-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:12.5px;color:var(--muted)}

/* ---------- 资讯列表卡 ---------- */
.post-card{overflow:hidden;border-radius:var(--radius-lg);display:flex;flex-direction:column}
.post-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#0A1F38,#0E2E4C)}
.post-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.post-card:hover .post-media img{transform:scale(1.05)}
.post-cat{position:absolute;left:12px;top:12px}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.post-body h3{font-size:16.5px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{color:var(--muted);font-size:14px;margin-top:10px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted);border-top:1px solid rgba(120,190,255,.12)}
.post-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--aqua);font-weight:600}
.post-arrow svg{transition:transform .2s ease-out}
.post-card:hover .post-arrow svg{transform:translateX(3px)}
.empty-state{
  border:1px dashed rgba(120,190,255,.3);
  border-radius:var(--radius-lg);
  background:rgba(9,26,46,.5);
  padding:52px 24px;text-align:center;color:var(--muted);
}

/* ---------- 信任数据与反馈 ---------- */
.data-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  background:rgba(8,24,44,.62);overflow:hidden;
}
.data-cell{padding:26px 24px;border-right:1px solid rgba(120,190,255,.12)}
.data-cell:last-child{border-right:none}
.data-cell .k{font-size:28px;font-weight:800;color:var(--frost);font-variant-numeric:tabular-nums}
.data-cell .v{font-size:13.5px;color:var(--muted);margin-top:6px}
@media (max-width:768px){
  .data-strip{grid-template-columns:1fr}
  .data-cell{border-right:none;border-bottom:1px solid rgba(120,190,255,.12)}
  .data-cell:last-child{border-bottom:none}
}
.quote-card{padding:24px}
.quote-card p{color:#CFE4F5;font-size:15px}
.quote-meta{margin-top:16px;font-size:12.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(10,26,46,.55);
  transition:background-color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
  overflow:hidden;
}
.faq-item + .faq-item{margin-top:14px}
.faq-item:hover{border-color:rgba(77,225,255,.35)}
.faq-item[open]{
  background:rgba(15,40,68,.8);
  border-color:var(--line-strong);
  box-shadow:0 0 24px rgba(77,225,255,.12);
}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:15.5px;font-weight:600;color:#DCEEFB;
}
.faq-item summary::-webkit-details-marker{display:none}
.pm{position:relative;width:20px;height:20px;flex:none}
.pm i{position:absolute;background:var(--aqua);border-radius:2px;transition:transform .2s ease-out}
.pm i:first-child{top:9px;left:0;width:20px;height:2px}
.pm i:last-child{top:0;left:9px;width:2px;height:20px}
.faq-item[open] .pm i:last-child{transform:scaleY(0)}
.faq-body{padding:0 20px 20px;color:var(--muted);font-size:14.8px;line-height:1.9}

/* ---------- 表单 ---------- */
.field{
  width:100%;height:48px;border-radius:12px;
  background:rgba(8,20,36,.72);
  border:1px solid rgba(120,190,255,.22);
  padding:0 16px;font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
textarea.field{height:auto;padding:14px 16px;line-height:1.7;resize:vertical}
.field::placeholder{color:rgba(157,178,200,.62)}
.field:focus{outline:none;border-color:var(--aqua);box-shadow:0 0 0 3px rgba(77,225,255,.18)}
.field-label{display:block;font-size:13.5px;color:var(--muted);margin-bottom:8px}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted)}
.check-row input{width:18px;height:18px;accent-color:#4DE1FF;margin-top:3px;flex:none}
.form-hint{font-size:12.5px;color:var(--muted)}
.form-ok{font-size:13px;color:var(--mint);display:none}
.form-ok.show{display:block}
.form-err{font-size:13px;color:var(--danger);display:none}
.form-err.show{display:block}

/* ---------- CTA 面板 ---------- */
.cta-panel{
  position:relative;border-radius:24px;overflow:hidden;
  border:1px solid rgba(77,225,255,.28);
  background:
    linear-gradient(120deg,rgba(8,26,46,.92),rgba(6,17,31,.88)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  box-shadow:var(--shadow-hover);
}
.cta-panel::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(77,225,255,.10),transparent 55%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;padding:44px}
@media (max-width:768px){.cta-inner{padding:26px}}
.trust-line{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.trust-line + .trust-line{margin-top:10px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:96px;border-top:1px solid rgba(77,225,255,.2);background:rgba(5,14,26,.85)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding:56px 0 40px}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;padding:40px 0 28px}}
.footer-title{font-size:14px;font-weight:700;color:var(--frost);margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:var(--muted);padding:6px 0;transition:color .18s ease-out}
.footer-link:hover{color:var(--aqua)}
.footer-bottom{border-top:1px solid rgba(120,190,255,.14);padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.social-row{display:flex;gap:10px;margin-top:16px}
.social-dot{
  width:36px;height:36px;border-radius:11px;
  display:grid;place-items:center;
  border:1px solid var(--line);background:rgba(10,26,46,.6);color:var(--muted);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg:#06111F;
  --bg-2:#0B1B31;
  --accent:#4DE1FF;
  --mint:#5CE6B8;
  --text:#EAF6FF;
  --mist:#9DB2C8;
  --line:rgba(77,225,255,.18);
  --line-soft:rgba(77,225,255,.10);
  --glow:rgba(77,225,255,.45);
  --glass:rgba(12,32,54,.62);
  --glass-strong:rgba(16,42,68,.82);
  --warn:#F2B84B;
  --danger:#FF7A6B;
  --success:#5CE6B8;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 8px 32px rgba(0,0,0,.35);
  --shadow-hi:0 18px 48px rgba(0,0,0,.5);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background-image:
    linear-gradient(rgba(77,225,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(77,225,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    radial-gradient(70% 55% at 82% 6%,rgba(77,225,255,.13),transparent 62%),
    radial-gradient(60% 50% at 4% 88%,rgba(92,230,184,.09),transparent 60%),
    linear-gradient(160deg,rgba(11,27,49,.9),rgba(6,17,31,1) 72%);
  pointer-events:none;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.28;letter-spacing:.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.text-mist{color:var(--mist)}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:rgba(6,17,31,.9);
  border-bottom:1px solid var(--line-soft);
  font-size:13px;
  color:var(--mist);
  position:relative;
  z-index:60;
}
.topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar-left{display:flex;align-items:center;gap:10px;letter-spacing:.04em}
.topbar-left .tb-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--glow)}
.topbar-mid{display:flex;align-items:center;gap:8px;color:rgba(157,178,200,.9);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:16px}
.topbar-right a{color:var(--text);transition:color .18s}
.topbar-right a:hover{color:var(--accent)}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 8px rgba(92,230,184,.8);margin-right:6px}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:55;
  background:rgba(8,20,36,.78);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  box-shadow:0 10px 34px rgba(2,8,18,.55),0 1px 0 rgba(77,225,255,.22) inset;
}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--text)}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:11px;
  background:linear-gradient(135deg,var(--accent),var(--mint));
  color:#04121f;display:grid;place-items:center;font-size:17px;font-weight:900;
  box-shadow:0 0 18px rgba(77,225,255,.4);
}
.brand-text{font-size:16px;line-height:1.2;letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  padding:9px 14px;
  border-radius:10px;
  color:var(--mist);
  font-size:15px;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-link:hover{color:var(--text);background:rgba(77,225,255,.09)}
.nav-link.active{color:var(--text);font-weight:600}
.nav-link.active::after{
  content:"";
  position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 10px var(--glow);
}
.nav-cta{display:flex;align-items:center;gap:12px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:13px;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out;
}
.btn-primary{
  background:linear-gradient(135deg,#4DE1FF,#5CE6B8);
  color:#04121f;
  box-shadow:0 0 0 1px rgba(77,225,255,.5),0 10px 28px rgba(77,225,255,.24);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(77,225,255,.75),0 16px 36px rgba(77,225,255,.4)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(77,225,255,.5),0 6px 16px rgba(77,225,255,.2)}
.btn-ghost{background:rgba(12,32,54,.6);border-color:var(--line);color:var(--text)}
.btn-ghost:hover{background:rgba(77,225,255,.13);border-color:rgba(77,225,255,.45);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(77,225,255,.08)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- 汉堡与抽屉 ---------- */
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(12,32,54,.7);border:1px solid var(--line);
  position:relative;cursor:pointer;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .22s ease-out,opacity .22s ease-out;
}
.burger span{top:21px}
.burger span::before{content:"";left:0;top:-6px}
.burger span::after{content:"";left:0;top:6px}
.burger.open span{transform:rotate(45deg)}
.burger.open span::before{transform:rotate(-90deg) translateX(6px);top:0}
.burger.open span::after{opacity:0}
.drawer{
  position:fixed;inset:0;z-index:80;
  background:rgba(4,12,22,.97);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  padding:22px 22px 40px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateY(-102%);
  visibility:hidden;
  transition:transform .28s ease-out,visibility .28s;
  overflow-y:auto;
}
.drawer.open{transform:translateY(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line-soft)}
.drawer-close{background:none;border:1px solid var(--line);border-radius:10px;color:var(--text);height:38px;padding:0 14px;cursor:pointer}
.drawer-link{
  display:block;padding:16px 6px;font-size:19px;font-weight:700;color:var(--text);
  border-bottom:1px solid var(--line-soft);transition:color .18s,padding-left .18s;
}
.drawer-link:hover,.drawer-link.active{color:var(--accent);padding-left:12px}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-sm{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.16em;color:var(--accent);
  padding:6px 14px;border-radius:999px;
  background:rgba(77,225,255,.1);border:1px solid var(--line);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--glow)}
.h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:800;letter-spacing:.01em}
.h2{font-size:clamp(1.6rem,2.4vw,2.2rem)}
.h3{font-size:1.25rem}
.lead{font-size:17px;color:var(--mist);line-height:1.9}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .h2{margin:16px 0 14px}
.metric-row{display:flex;flex-wrap:wrap;gap:34px;margin-top:36px}
.metric-row div{display:flex;flex-direction:column;gap:2px}
.metric-row strong{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text)}
.metric-row span{font-size:13px;color:var(--mist);letter-spacing:.06em}

.glass{
  position:relative;overflow:hidden;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);
}
.card-hover{transition:transform .22s ease-out,box-shadow .22s ease-out,border-color .22s ease-out}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-hi);border-color:rgba(77,225,255,.42)}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:4px 10px;border-radius:999px;
  border:1px solid var(--line);color:var(--accent);background:rgba(77,225,255,.1);
}
.badge-mint{color:var(--mint);border-color:rgba(92,230,184,.32);background:rgba(92,230,184,.1)}
.badge-warn{color:var(--warn);border-color:rgba(242,184,75,.32);background:rgba(242,184,75,.1)}

/* ---------- Hero ---------- */
.hero-section{padding:72px 0 64px;position:relative}
.hero-panel{
  min-height:360px;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:0;
}
.hero-panel-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.34;filter:saturate(.9);
}
.hero-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,17,31,.28) 0%,rgba(6,17,31,.9) 78%);
}
.hero-panel-body{position:relative;z-index:2;padding:26px 26px 28px}
.panel-head{
  display:flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.1em;color:var(--mist);margin-bottom:14px;
}
.panel-head .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(92,230,184,.9)}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 0;border-bottom:1px solid var(--line-soft);
  font-size:15px;
}
.panel-row:last-of-type{border-bottom:0}
.panel-row span{color:var(--mist)}
.panel-row strong{font-weight:700;font-variant-numeric:tabular-nums}
.u-mint{color:var(--mint)}
.u-mist{color:var(--mist)}
.float-badge{
  position:absolute;top:22px;right:22px;z-index:3;
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:7px 13px;border-radius:999px;
  background:linear-gradient(135deg,rgba(77,225,255,.9),rgba(92,230,184,.9));
  color:#04121f;box-shadow:0 0 22px rgba(77,225,255,.5);
}

/* ---------- 对比表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:20px;
  background:rgba(8,20,36,.66);
  overflow-x:auto;
  box-shadow:var(--shadow);
}
table.compare{
  width:100%;min-width:960px;border-collapse:separate;border-spacing:0;
  font-variant-numeric:tabular-nums;
}
.compare th,.compare td{
  padding:16px 20px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line-soft);
  font-size:15px;line-height:1.7;
}
.compare thead th{
  position:sticky;top:0;z-index:3;
  background:rgba(9,24,42,.97);
  color:var(--mist);font-size:14px;font-weight:700;letter-spacing:.04em;
  white-space:nowrap;
}
.compare thead th .th-title{display:block;color:var(--text);font-size:16px;font-weight:800;letter-spacing:.01em}
.compare thead th .th-note{display:block;font-size:12px;color:var(--mist);font-weight:400;margin-top:4px}
.compare th:first-child,.compare td:first-child{
  position:sticky;left:0;z-index:2;
  background:rgba(7,19,34,.98);
  min-width:150px;color:var(--text);font-weight:600;
}
.compare thead th:first-child{z-index:4}
.compare tbody tr:hover td{background:rgba(77,225,255,.06)}
.compare tbody tr:hover td:first-child{background:rgba(11,30,52,1)}
.compare tbody tr:last-child td{border-bottom:0}
.compare td.col-hot,.compare th.col-hot{background:rgba(77,225,255,.075)}
.compare tbody tr:hover td.col-hot{background:rgba(77,225,255,.13)}
.compare thead th.col-hot{position:sticky;top:0}
.compare thead th.col-hot::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,var(--accent),var(--mint));
  box-shadow:0 0 14px var(--glow);
}
.compare thead th.col-hot .badge{margin-top:8px}
.cell-strong{color:var(--text);font-weight:600}
.cell-soft{color:var(--mist)}

/* ---------- 等级阶梯 ---------- */
.stairs{display:flex;flex-direction:column;gap:20px}
.stair{
  display:grid;grid-template-columns:104px 1fr;gap:22px;align-items:stretch;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 26px;box-shadow:var(--shadow);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.stair:nth-child(1){max-width:74%}
.stair:nth-child(2){max-width:84%}
.stair:nth-child(3){max-width:93%}
.stair:nth-child(4){max-width:100%;border-color:rgba(77,225,255,.38);background:var(--glass-strong)}
.stair:hover{transform:translateY(-3px);border-color:rgba(77,225,255,.5);box-shadow:var(--shadow-hi)}
.stair-index{
  font-size:34px;font-weight:800;font-variant-numeric:tabular-nums;
  color:rgba(77,225,255,.32);line-height:1;
  border-right:1px solid var(--line-soft);
  display:flex;align-items:center;
  letter-spacing:-.02em;
}
.stair-body .stair-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.stair-body h3{font-size:19px}
.stair-body p{color:var(--mist);font-size:15px}
.stair-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:12px;font-size:14px;font-weight:600;color:var(--accent);
  transition:gap .2s ease-out,color .2s;
}
.stair-link:hover{gap:11px;color:var(--mint)}

/* ---------- 图文说明 ---------- */
.figure-card{
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background:var(--glass);box-shadow:var(--shadow);
}
.figure-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.note-list li{
  position:relative;padding-left:22px;margin-bottom:14px;color:var(--mist);font-size:15px;line-height:1.85;
}
.note-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:linear-gradient(135deg,var(--accent),var(--mint));
  box-shadow:0 0 10px rgba(77,225,255,.55);
}
.note-list li strong{color:var(--text)}

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--line);border-radius:16px;
  background:rgba(12,32,54,.55);
  margin-bottom:14px;overflow:hidden;
  transition:border-color .2s ease-out,background .2s ease-out;
}
.faq-item:hover{border-color:rgba(77,225,255,.36)}
.faq-item.open{border-color:rgba(77,225,255,.6);background:var(--glass-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:none;border:0;color:var(--text);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;
  border:1px solid var(--line);position:relative;
  transition:transform .24s ease-out,background .24s,border-color .24s;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:6px;top:12px;width:12px;height:2px;border-radius:2px;background:var(--accent);
}
.faq-icon::after{transform:rotate(90deg);transition:transform .24s ease-out,opacity .24s}
.faq-item.open .faq-icon{background:rgba(77,225,255,.14);border-color:rgba(77,225,255,.6);transform:rotate(180deg)}
.faq-item.open .faq-icon::after{transform:rotate(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
.faq-a-inner{padding:0 22px 20px;color:var(--mist);font-size:15px;line-height:1.9}

/* ---------- 表单 ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--mist);margin-bottom:8px;letter-spacing:.03em}
.input{
  width:100%;height:48px;border-radius:12px;
  background:rgba(8,20,36,.72);border:1px solid var(--line);
  color:var(--text);padding:0 16px;font-size:15px;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s;
}
.input::placeholder{color:rgba(157,178,200,.62)}
.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(77,225,255,.14);background:rgba(10,26,46,.9)}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--mist);line-height:1.7}
.check-row input{margin-top:5px;accent-color:#4DE1FF;width:16px;height:16px}
.form-tip{font-size:13px;margin-top:14px}
.tip-success{color:var(--success)}
.tip-error{color:var(--danger)}
.cta-panel{
  border-radius:22px;padding:44px;
  background:linear-gradient(135deg,rgba(16,42,68,.92),rgba(8,20,36,.92));
  border:1px solid var(--line);box-shadow:var(--shadow-hi);
  position:relative;overflow:hidden;
}
.cta-panel::after{
  content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(77,225,255,.20),transparent 68%);
}
.cta-panel > *{position:relative;z-index:2}
.trust-line{display:flex;align-items:center;gap:9px;color:var(--mist);font-size:14px;margin-top:10px}
.trust-line .tick{color:var(--mint);font-weight:700}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(8,20,36,.85),rgba(4,12,22,.98));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:64px 0 42px}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--text);margin-bottom:16px}
.footer-link{display:block;color:var(--mist);font-size:14px;padding:5px 0;transition:color .18s,padding-left .18s}
.footer-link:hover{color:var(--accent);padding-left:6px}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-dot{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--mist);background:rgba(12,32,54,.6);
  transition:color .18s,border-color .18s,transform .18s;
}
.social-dot:hover{color:var(--accent);border-color:rgba(77,225,255,.5);transform:translateY(-2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--mist);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .desk-only{display:none}
  .burger{display:inline-flex}
  .container-x{padding:0 22px}
  .section{padding:68px 0}
  .section-sm{padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 34px}
  .stair:nth-child(n){max-width:100%}
  .cta-panel{padding:32px}
}
@media (max-width:767px){
  .topbar-mid{display:none}
  .brand-text{font-size:15px;max-width:190px;line-height:1.25}
  .hero-section{padding:52px 0 44px}
  .h1{font-size:2rem}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .metric-row{gap:24px}
  .metric-row strong{font-size:22px}
  .stair{grid-template-columns:1fr;padding:20px}
  .stair-index{border-right:0;border-bottom:1px solid var(--line-soft);padding-bottom:10px;font-size:26px;justify-content:flex-start}
  .btn{width:100%}
  .btn.btn-auto{width:auto}
  .cta-panel{padding:26px 20px}
}
@media (max-width:519px){
  .container-x{padding:0 16px}
  .footer-grid{grid-template-columns:1fr}
  body{font-size:15px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --bg:#06111F;
  --bg-2:#0B1B31;
  --cyan:#4DE1FF;
  --mint:#5CE6B8;
  --text:#EAF6FF;
  --mist:#9DB2C8;
  --line:rgba(77,225,255,.18);
  --line-soft:rgba(120,190,255,.16);
  --glow:rgba(77,225,255,.45);
  --glass:rgba(12,32,54,.62);
  --danger:#FF7A6B;
  --warn:#FFC46B;
  --r-sm:12px;
  --r:16px;
  --r-lg:20px;
  --sh:0 8px 32px rgba(0,0,0,.35);
  --sh-h:0 16px 44px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(77,225,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(77,225,255,.05) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 18%,transparent 76%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 18%,transparent 76%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:linear-gradient(112deg,transparent 40%,rgba(77,225,255,.055) 51%,transparent 63%);
}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:-.005em;}
p{margin:0;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(77,225,255,.3);color:#fff;}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 28px;position:relative;z-index:1;}
@media(max-width:768px){.container-x{padding:0 18px;}}

/* ============ 顶部信息条 ============ */
.topbar{
  position:relative;z-index:41;height:38px;
  background:rgba(4,13,24,.9);
  border-bottom:1px solid rgba(77,225,255,.1);
  font-size:12.5px;color:var(--mist);
}
.topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px;}
.topbar-dom{letter-spacing:.04em;color:rgba(157,178,200,.92);font-variant-numeric:tabular-nums;}
.topbar-tip{display:flex;align-items:center;gap:9px;color:rgba(157,178,200,.74);}
.topbar-actions{display:flex;align-items:center;gap:18px;}
.topbar-actions a{color:rgba(234,246,255,.92);}
.topbar-actions a:hover{color:var(--cyan);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 0 3px rgba(92,230,184,.15);}
@media(max-width:1024px){.topbar-tip{display:none;}}
@media(max-width:520px){.topbar-actions{gap:12px;font-size:12px;}}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(6,17,31,.78);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(77,225,255,.55),transparent);
}
.nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  font-size:17px;font-weight:800;color:#04121F;
  background:linear-gradient(140deg,#4DE1FF,#5CE6B8);
  box-shadow:0 0 18px rgba(77,225,255,.4);flex:none;
}
.brand-text{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-link{position:relative;padding:9px 14px;border-radius:10px;font-size:14.5px;color:rgba(234,246,255,.78);}
.nav-link:hover{color:#fff;background:rgba(77,225,255,.08);}
.nav-link.active{color:#fff;background:rgba(77,225,255,.1);box-shadow:inset 0 0 0 1px rgba(77,225,255,.25);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#4DE1FF,#5CE6B8);box-shadow:0 0 10px rgba(77,225,255,.7);
}
.nav-link.active::before{
  content:"";position:absolute;top:5px;right:9px;width:5px;height:5px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px var(--cyan);
}
.nav-cta{display:flex;align-items:center;gap:12px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:13px;font-size:15px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px;}
.btn-block{width:100%;}
.btn-primary{
  background:linear-gradient(135deg,#4DE1FF,#5CE6B8);color:#04121F;
  box-shadow:0 0 22px rgba(77,225,255,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(77,225,255,.6);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(77,225,255,.35);}
.btn-ghost{background:rgba(12,32,54,.55);border-color:rgba(120,190,255,.22);color:var(--text);}
.btn-ghost:hover{background:rgba(20,48,78,.78);border-color:rgba(77,225,255,.45);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 汉堡与抽屉 ============ */
.burger{
  display:none;position:relative;width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(120,190,255,.22);background:rgba(12,32,54,.6);
}
.burger::before,.burger::after,.burger span{
  content:"";position:absolute;left:12px;right:12px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.burger::before{top:15px;}
.burger span{top:21px;}
.burger::after{top:27px;}
.burger.open::before{transform:translateY(6px) rotate(45deg);}
.burger.open span{opacity:0;}
.burger.open::after{transform:translateY(-6px) rotate(-45deg);}
.drawer{
  position:fixed;inset:0;z-index:60;display:none;flex-direction:column;
  padding:22px 20px 26px;background:rgba(4,11,20,.975);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.drawer.open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:26px;}
.drawer-close{
  width:42px;height:42px;border-radius:12px;border:1px solid rgba(120,190,255,.22);
  background:rgba(12,32,54,.6);display:grid;place-items:center;font-size:18px;color:var(--text);
}
.drawer-nav a{
  display:block;padding:16px 4px;font-size:19px;font-weight:600;
  border-bottom:1px solid rgba(120,190,255,.12);color:var(--text);
}
.drawer-nav a:hover{color:var(--cyan);}
.drawer-nav a.active{color:var(--cyan);}
.drawer-foot{margin-top:auto;padding-top:22px;display:flex;flex-direction:column;gap:12px;}
@media(max-width:1023px){
  .nav-links{display:none;}
  .burger{display:block;}
  .desk-only{display:none;}
}
@media(max-width:520px){
  .brand-text{font-size:13.5px;line-height:1.25;max-width:158px;}
  .brand-mark{width:32px;height:32px;font-size:15px;border-radius:10px;}
  .nav-inner{height:62px;}
}

/* ============ 文章头部 ============ */
main{position:relative;z-index:2;}
.article-head{
  padding:54px 0 40px;
  border-bottom:1px solid rgba(77,225,255,.12);
  background:radial-gradient(900px 340px at 10% -10%,rgba(77,225,255,.1),transparent 72%);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--mist);margin-bottom:24px;}
.breadcrumb a{color:rgba(234,246,255,.82);}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb .sep{color:rgba(157,178,200,.42);}
.breadcrumb .cur{color:rgba(234,246,255,.95);}

.article-head-grid{display:grid;grid-template-columns:minmax(0,1.95fr) minmax(0,1fr);gap:42px;align-items:start;}
.head-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;font-weight:600;color:var(--cyan);
  background:rgba(77,225,255,.12);border:1px solid rgba(77,225,255,.3);
}
.tag-plain{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
  font-size:12.5px;color:var(--mist);background:rgba(8,20,36,.7);border:1px solid rgba(120,190,255,.16);
}
.article-head h1{font-size:clamp(1.85rem,3.4vw,2.85rem);line-height:1.3;margin-bottom:18px;max-width:920px;}
.article-lead{font-size:16.5px;line-height:1.85;color:rgba(234,246,255,.78);max-width:860px;margin-bottom:26px;}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--mist);}
.meta-row .kv{display:inline-flex;align-items:center;gap:6px;}
.meta-row b{font-weight:600;color:rgba(234,246,255,.92);font-variant-numeric:tabular-nums;}

.mini-panel{
  background:var(--glass);border:1px solid rgba(120,190,255,.18);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh);position:relative;overflow:hidden;
}
.mini-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(77,225,255,.6),transparent);
}
.mini-panel-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.mini-panel-title::before{
  content:"";width:3px;height:15px;border-radius:2px;
  background:linear-gradient(180deg,#4DE1FF,#5CE6B8);
}
.mini-list li{
  position:relative;padding-left:16px;font-size:13.8px;line-height:1.75;
  color:rgba(234,246,255,.76);margin-bottom:12px;
}
.mini-list li::before{
  content:"";position:absolute;left:0;top:.65em;width:6px;height:6px;border-radius:2px;
  background:rgba(77,225,255,.7);
}
.mini-list li:last-child{margin-bottom:0;}
.mini-panel .btn{margin-top:20px;}

@media(max-width:1023px){
  .article-head{padding:38px 0 30px;}
  .article-head-grid{grid-template-columns:1fr;gap:28px;}
  .article-lead{font-size:15.5px;}
}

/* ============ 主体 8/4 ============ */
.article-main{padding:54px 0 20px;}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:36px;}
.col-main{grid-column:span 8;min-width:0;}
.col-side{grid-column:span 4;min-width:0;}
@media(max-width:1023px){
  .article-main{padding:36px 0 10px;}
  .grid-12{gap:26px;}
  .col-main,.col-side{grid-column:span 12;}
}

/* ============ 正文排版 ============ */
.article-body{
  font-size:16.5px;line-height:1.9;color:rgba(234,246,255,.9);
  max-width:820px;counter-reset:sec;min-height:240px;
}
.article-body p{margin:0 0 1.35em;}
.article-body h2{
  counter-increment:sec;position:relative;padding-left:46px;
  margin:2.1em 0 .85em;font-size:clamp(1.25rem,2vw,1.5rem);color:#fff;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;bottom:.3em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,#4DE1FF,#5CE6B8);box-shadow:0 0 12px rgba(77,225,255,.5);
}
.article-body h2::after{
  content:counter(sec,decimal-leading-zero);position:absolute;left:15px;top:.58em;
  font-size:12px;font-weight:700;letter-spacing:.06em;color:rgba(77,225,255,.68);
  font-variant-numeric:tabular-nums;
}
.article-body h3{
  margin:1.7em 0 .7em;font-size:1.15rem;color:#fff;
  padding-bottom:8px;border-bottom:1px solid rgba(120,190,255,.16);
}
.article-body h4{margin:1.4em 0 .55em;font-size:1.02rem;color:#fff;}
.article-body ul{margin:0 0 1.35em;padding-left:4px;}
.article-body ol{margin:0 0 1.35em;padding-left:22px;list-style:decimal;}
.article-body li{position:relative;margin-bottom:.55em;padding-left:18px;}
.article-body ol li{padding-left:4px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:rgba(77,225,255,.75);
}
.article-body ol li::marker{color:var(--cyan);font-weight:700;}
.article-body a{
  color:var(--cyan);text-decoration:underline;text-underline-offset:4px;
  text-decoration-color:rgba(77,225,255,.42);
}
.article-body a:hover{color:#8DEBFF;text-decoration-color:rgba(141,235,255,.9);}
.article-body strong{color:#fff;font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-radius:0 14px 14px 0;
  background:rgba(12,32,54,.6);border-left:3px solid var(--cyan);
  color:rgba(234,246,255,.85);box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:1.6em 0;width:100%;box-shadow:var(--sh);}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{margin-top:10px;font-size:12.5px;color:var(--mist);text-align:center;}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px;}
.article-body th,.article-body td{padding:11px 14px;border:1px solid rgba(120,190,255,.18);text-align:left;vertical-align:top;}
.article-body thead th{background:rgba(77,225,255,.1);color:#fff;font-weight:700;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body hr{border:none;height:1px;background:rgba(120,190,255,.16);margin:2.2em 0;}
@media(max-width:768px){
  .article-body{font-size:15.5px;line-height:1.88;}
  .article-body h2{padding-left:38px;}
  .article-body h2::after{left:12px;}
}

.post-actions{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:46px;padding-top:28px;
  border-top:1px solid rgba(120,190,255,.14);max-width:820px;
}
@media(max-width:560px){
  .post-actions .btn{width:100%;}
}

/* ============ 空态 ============ */
.empty-state{
  padding:58px 26px;text-align:center;border-radius:var(--r-lg);
  background:rgba(12,32,54,.5);border:1px dashed rgba(120,190,255,.3);
}
.empty-state h3{font-size:19px;color:#fff;margin-bottom:10px;}
.empty-state p{color:var(--mist);font-size:14.5px;margin-bottom:22px;}

/* ============ 侧栏 ============ */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px;}
@media(max-width:1023px){.side-sticky{position:static;}}
.side-card{
  background:var(--glass);border:1px solid rgba(120,190,255,.18);border-radius:18px;
  padding:22px;box-shadow:var(--sh);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.side-card:hover{border-color:rgba(77,225,255,.34);box-shadow:var(--sh-h);}
.side-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;display:flex;align-items:center;gap:9px;}
.side-title::before{
  content:"";width:3px;height:15px;border-radius:2px;
  background:linear-gradient(180deg,#4DE1FF,#5CE6B8);
}
.side-text{font-size:13.6px;line-height:1.8;color:var(--mist);margin-bottom:18px;}

.rel-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(120,190,255,.16);}
.rel-item:last-child{border-bottom:none;padding-bottom:0;}
.rel-item:first-child{padding-top:0;}
.rel-thumb{
  width:78px;height:56px;border-radius:10px;flex:none;object-fit:cover;
  background:linear-gradient(135deg,#0B1B31,#12315A);
}
.rel-title{font-size:14px;line-height:1.55;color:rgba(234,246,255,.9);}
.rel-item:hover .rel-title{color:var(--cyan);}
.rel-meta{font-size:12px;color:var(--mist);margin-top:6px;font-variant-numeric:tabular-nums;}

.cat-chip{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 14px;border-radius:12px;margin-bottom:10px;font-size:14px;
  color:rgba(234,246,255,.86);background:rgba(8,20,36,.7);
  border:1px solid rgba(120,190,255,.14);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.cat-chip:last-child{margin-bottom:0;}
.cat-chip:hover{transform:translateX(3px);border-color:rgba(77,225,255,.5);background:rgba(14,38,64,.82);color:#fff;}
.cat-chip .num{font-size:12px;color:var(--mist);font-variant-numeric:tabular-nums;flex:none;}
.cat-chip:hover .num{color:var(--cyan);}

.cta-card{position:relative;overflow:hidden;}
.cta-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(77,225,255,.7),transparent);
}
.cta-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle,rgba(77,225,255,.22),transparent 70%);pointer-events:none;
}
.side-link{display:block;text-align:center;font-size:13px;color:var(--mist);margin-top:14px;}
.side-link:hover{color:var(--cyan);}

/* ============ 相关推荐 ============ */
.related-section{padding:64px 0 84px;position:relative;z-index:2;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;}
.sec-head h2{font-size:clamp(1.35rem,2.3vw,1.85rem);color:#fff;}
.sec-head p{margin-top:10px;font-size:14.5px;color:var(--mist);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media(max-width:900px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}}
@media(max-width:560px){.rel-grid{grid-template-columns:1fr;}}
.card-link{
  display:block;overflow:hidden;border-radius:18px;
  background:var(--glass);border:1px solid rgba(120,190,255,.18);box-shadow:var(--sh);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card-link:hover{transform:translateY(-4px);border-color:rgba(77,225,255,.5);box-shadow:var(--sh-h);}
.card-link:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#0B1B31,#12315A);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card-link:hover .card-thumb img{transform:scale(1.04);}
.card-thumb .badge-soft{position:absolute;left:12px;top:12px;background:rgba(4,13,24,.72);border-color:rgba(77,225,255,.4);color:var(--cyan);}
.card-body{padding:18px 20px 20px;}
.card-body h3{font-size:16px;line-height:1.5;color:#fff;margin-bottom:10px;}
.card-body p{font-size:13.8px;line-height:1.75;color:var(--mist);}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;font-size:12.5px;color:var(--mist);font-variant-numeric:tabular-nums;}
.card-foot .arrow{color:var(--cyan);transition:transform .2s var(--ease);}
.card-link:hover .card-foot .arrow{transform:translateX(4px);}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:2;margin-top:12px;
  border-top:1px solid rgba(77,225,255,.16);
  background:rgba(4,13,24,.74);padding:60px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:38px;}
@media(max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:600px){.footer-grid{grid-template-columns:1fr;gap:28px;}}
.footer-title{font-size:14.5px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-link{display:block;font-size:14px;color:var(--mist);padding:6px 0;}
.footer-link:hover{color:var(--cyan);}
.text-mist{color:var(--mist);}
.social-row{display:flex;gap:10px;margin-top:20px;}
.social-dot{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  color:var(--mist);background:rgba(12,32,54,.7);border:1px solid rgba(120,190,255,.18);
}
.social-dot:hover{color:var(--cyan);border-color:rgba(77,225,255,.4);}
.footer-bottom{
  margin-top:46px;padding:20px 0;border-top:1px solid rgba(120,190,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(157,178,200,.82);
}
.footer-bottom .dom{font-variant-numeric:tabular-nums;}

@media(prefers-reduced-motion:no-preference){
  .reveal{animation:fadeUp .6s var(--ease) both;}
}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px);}to{opacity:1;transform:none;}}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category2 */
:root{
    --bg-900:#06111F;
    --bg-800:#0B1B31;
    --accent:#4DE1FF;
    --accent-2:#5CE6B8;
    --text:#EAF6FF;
    --mist:#9DB2C8;
    --line:rgba(77,225,255,0.18);
    --line-strong:rgba(120,190,255,0.32);
    --glow:rgba(77,225,255,0.45);
    --glass:rgba(12,32,54,0.62);
    --glass-soft:rgba(12,32,54,0.4);
    --warn:#F5B95C;
    --ok:#5CE6B8;
    --danger:#FF7B72;
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:12px;
    --shadow:0 8px 32px rgba(0,0,0,0.35);
    --shadow-hover:0 18px 46px rgba(0,0,0,0.48);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    color:var(--text);
    background-color:var(--bg-900);
    background-image:
      linear-gradient(rgba(77,225,255,0.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(77,225,255,0.045) 1px, transparent 1px),
      radial-gradient(900px 520px at 88% -6%, rgba(77,225,255,0.14), transparent 62%),
      linear-gradient(160deg, #06111F 0%, #071629 46%, #0B1B31 100%);
    background-size:56px 56px, 56px 56px, auto, auto;
    font-size:16px;
    line-height:1.78;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
  h1,h2,h3,h4{line-height:1.3;margin:0;font-weight:800;letter-spacing:.01em;}
  p{margin:0;}
  .num{font-variant-numeric:tabular-nums;}
  .container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 28px;}

  /* ---------- 顶部信息条 ---------- */
  .topbar{
    height:38px;
    background:rgba(6,17,31,0.92);
    border-bottom:1px solid var(--line);
    font-size:13px;
    display:flex;
    align-items:center;
  }
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;}
  .topbar-domain{color:var(--mist);letter-spacing:.04em;}
  .topbar-tip{color:var(--mist);display:flex;align-items:center;gap:8px;}
  .dot-live{width:7px;height:7px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 10px var(--accent-2);display:inline-block;}
  .topbar-actions{display:flex;align-items:center;gap:16px;}
  .topbar-actions a{color:var(--text);opacity:.88;transition:color .18s var(--ease),opacity .18s var(--ease);}
  .topbar-actions a:hover{color:var(--accent);opacity:1;}
  .topbar-sep{color:rgba(157,178,200,.4);}

  /* ---------- 主导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(6,17,31,0.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(77,225,255,0.16), 0 14px 40px rgba(0,0,0,0.35);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px;}
  .brand{display:flex;align-items:center;gap:12px;min-width:0;}
  .brand-mark{
    width:38px;height:38px;flex:0 0 38px;border-radius:12px;
    display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:18px;color:#04131f;
    background:linear-gradient(140deg,var(--accent),var(--accent-2));
    box-shadow:0 0 22px rgba(77,225,255,0.42);
  }
  .brand-text{font-weight:800;font-size:17px;white-space:nowrap;letter-spacing:.01em;}
  .nav-links{display:flex;align-items:center;gap:6px;}
  .nav-link{
    position:relative;
    padding:9px 14px;
    border-radius:10px;
    font-size:15px;
    color:var(--mist);
    transition:color .18s var(--ease),background .18s var(--ease);
  }
  .nav-link:hover{color:var(--text);background:rgba(77,225,255,0.08);}
  .nav-link.active{color:var(--text);}
  .nav-link.active::after{
    content:"";
    position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--accent),transparent);
    box-shadow:0 0 12px var(--glow);
  }
  .nav-link.active::before{
    content:"";position:absolute;right:6px;top:8px;width:6px;height:6px;border-radius:50%;
    background:var(--accent);box-shadow:0 0 10px var(--glow);
  }
  .nav-cta{display:flex;align-items:center;gap:12px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:13px;height:46px;padding:0 24px;
    font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
    transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
    white-space:nowrap;
  }
  .btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px;}
  .btn-primary{
    background:linear-gradient(120deg,#4DE1FF,#5CE6B8);
    color:#04131f;
    box-shadow:0 0 0 rgba(77,225,255,0), 0 10px 28px rgba(0,0,0,0.35), 0 0 22px rgba(77,225,255,0.34);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,0,0,0.42), 0 0 34px rgba(77,225,255,0.62);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(0,0,0,0.4), 0 0 14px rgba(77,225,255,0.3);}
  .btn-ghost{
    background:rgba(12,32,54,0.55);
    border-color:var(--line-strong);
    color:var(--text);
  }
  .btn-ghost:hover{background:rgba(77,225,255,0.12);border-color:var(--accent);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;
  }
  .btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:14px;}
  .btn-link:hover{text-decoration:underline;text-underline-offset:4px;}

  /* ---------- 汉堡与抽屉 ---------- */
  .burger{
    display:none;width:44px;height:44px;border-radius:12px;
    background:rgba(12,32,54,0.6);border:1px solid var(--line-strong);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .burger span,.burger span::before,.burger span::after{
    content:"";display:block;width:20px;height:2px;border-radius:2px;background:var(--text);transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .burger span{position:relative;}
  .burger span::before{position:absolute;top:-6px;}
  .burger span::after{position:absolute;top:6px;}
  .burger.open span{background:transparent;}
  .burger.open span::before{transform:translateY(6px) rotate(45deg);}
  .burger.open span::after{transform:translateY(-6px) rotate(-45deg);}
  .drawer{
    position:fixed;inset:0;z-index:80;background:rgba(4,12,22,0.97);
    backdrop-filter:blur(8px);
    padding:26px 24px 30px;
    display:flex;flex-direction:column;gap:8px;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease);
  }
  .drawer.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
  .drawer a.drawer-link{
    padding:16px 4px;font-size:20px;font-weight:700;color:var(--text);
    border-bottom:1px solid rgba(77,225,255,0.14);
  }
  .drawer a.drawer-link.active{color:var(--accent);}
  .drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
  .drawer-close{width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);background:rgba(12,32,54,0.6);cursor:pointer;font-size:18px;}

  /* ---------- 通用板块 ---------- */
  .section{padding:88px 0;}
  .section-sm{padding:64px 0;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;letter-spacing:.16em;color:var(--accent);
    text-transform:uppercase;
    padding:6px 12px;border-radius:999px;
    border:1px solid var(--line);background:rgba(77,225,255,0.07);
  }
  .h2{font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:800;}
  .lead{color:var(--mist);font-size:16.5px;}
  .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(77,225,255,0.36),transparent);}
  .glass{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,0.06);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
  }
  .corner-tag{
    position:absolute;top:0;right:0;
    padding:6px 14px;font-size:12px;font-weight:700;letter-spacing:.06em;
    color:#04131f;background:linear-gradient(120deg,var(--accent),var(--accent-2));
    border-bottom-left-radius:14px;border-top-right-radius:19px;
  }

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;padding:74px 0 76px;border-bottom:1px solid var(--line);}
  .hero-bg{position:absolute;inset:0;z-index:0;}
  .hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.36;}
  .hero-bg::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(105deg, rgba(6,17,31,0.94) 0%, rgba(6,17,31,0.8) 42%, rgba(11,27,49,0.62) 100%),
               linear-gradient(rgba(77,225,255,0.06) 1px, transparent 1px);
    background-size:auto, 48px 48px;
  }
  .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.55fr 1fr;gap:44px;align-items:start;}
  .hero h1{font-size:clamp(1.85rem,3.3vw,2.75rem);margin:20px 0 0;letter-spacing:.005em;}
  .hero h1 em{font-style:normal;color:var(--accent);}
  .hero-sub{color:var(--mist);font-size:17px;margin-top:18px;max-width:640px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--mist);}
  .crumb a{color:var(--mist);}
  .crumb a:hover{color:var(--accent);}
  .hero-panel{padding:26px;position:relative;overflow:hidden;}
  .panel-row{display:flex;align-items:center;justify-content:space-between;padding:13px 0;border-bottom:1px dashed rgba(157,178,200,0.22);font-size:14px;}
  .panel-row:last-of-type{border-bottom:0;}
  .panel-row .k{color:var(--mist);}
  .panel-row .v{font-weight:700;}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12.5px;font-weight:700;padding:5px 11px;border-radius:999px;
    border:1px solid var(--line);background:rgba(77,225,255,0.1);color:var(--accent);
  }
  .badge-ok{border-color:rgba(92,230,184,0.4);background:rgba(92,230,184,0.12);color:var(--ok);}
  .badge-warn{border-color:rgba(245,185,92,0.4);background:rgba(245,185,92,0.12);color:var(--warn);}

  /* ---------- 时间线 ---------- */
  .timeline{position:relative;margin-top:46px;padding-left:38px;}
  .timeline::before{
    content:"";position:absolute;left:13px;top:6px;bottom:6px;width:2px;
    background:linear-gradient(180deg,var(--accent),rgba(77,225,255,0.08));
    box-shadow:0 0 14px rgba(77,225,255,0.35);
  }
  .step{position:relative;margin-bottom:22px;padding:22px 26px;border-radius:var(--radius-md);}
  .step:last-child{margin-bottom:0;}
  .step::before{
    content:"";position:absolute;left:-32px;top:28px;width:12px;height:12px;border-radius:50%;
    background:var(--bg-900);border:2px solid var(--accent);box-shadow:0 0 14px var(--glow);
  }
  .step-no{font-size:12.5px;letter-spacing:.18em;color:var(--accent);font-weight:700;}
  .step h3{font-size:19px;margin:8px 0 8px;}
  .step p{color:var(--mist);font-size:15px;}
  .step-hint{margin-top:12px;font-size:13.5px;color:var(--accent-2);display:flex;gap:8px;align-items:flex-start;}

  /* ---------- 安全提示双列 ---------- */
  .safe-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:42px;}
  .safe-card{padding:24px 24px 22px;border-radius:var(--radius-lg);position:relative;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);}
  .safe-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-hover);}
  .safe-icon{
    width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(77,225,255,0.12);border:1px solid var(--line);color:var(--accent);margin-bottom:14px;
  }
  .safe-card h3{font-size:17.5px;}
  .safe-card p{color:var(--mist);font-size:14.5px;margin-top:9px;}

  /* ---------- 快捷入口按钮组 ---------- */
  .entry-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:36px;}
  .entry-btn{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:18px 20px;border-radius:var(--radius-md);
    background:rgba(12,32,54,0.5);border:1px solid var(--line);
    font-weight:700;font-size:15px;
    transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
  }
  .entry-btn:hover{transform:translateY(-3px);border-color:var(--accent);background:rgba(77,225,255,0.12);box-shadow:0 12px 30px rgba(0,0,0,0.4);}
  .entry-btn svg{color:var(--accent);flex:0 0 auto;}

  /* ---------- 自检清单 ---------- */
  .check-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center;margin-top:40px;}
  .check-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:14px;}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text);}
  .check-list li .tick{
    flex:0 0 22px;width:22px;height:22px;border-radius:7px;margin-top:3px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(92,230,184,0.14);border:1px solid rgba(92,230,184,0.42);color:var(--ok);
  }
  .check-list li span.body{color:var(--mist);}
  .check-list li b{color:var(--text);font-weight:700;}
  .figure-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);}
  .figure-card img{width:100%;height:300px;object-fit:cover;}
  .figure-card .cap{
    position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:var(--mist);
    background:linear-gradient(180deg,transparent,rgba(4,14,26,0.92));
  }

  /* ---------- FAQ ---------- */
  .faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start;}
  .faq-side{position:sticky;top:104px;}
  .faq-list{display:flex;flex-direction:column;gap:14px;}
  .faq-item{
    border-radius:var(--radius-md);border:1px solid var(--line);background:rgba(12,32,54,0.5);
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .faq-item:hover{border-color:var(--line-strong);}
  .faq-item[open]{background:rgba(16,42,68,0.72);border-color:var(--accent);box-shadow:0 0 24px rgba(77,225,255,0.18);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;font-weight:700;font-size:15.5px;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-sign{
    flex:0 0 26px;width:26px;height:26px;border-radius:8px;position:relative;
    border:1px solid var(--line);background:rgba(77,225,255,0.1);
    transition:transform .22s var(--ease),background .22s var(--ease);
  }
  .faq-sign::before,.faq-sign::after{
    content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;border-radius:2px;background:var(--accent);
    transform:translate(-50%,-50%);
  }
  .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .22s var(--ease);}
  .faq-item[open] .faq-sign{background:rgba(77,225,255,0.22);}
  .faq-item[open] .faq-sign::after{transform:translate(-50%,-50%) rotate(0deg);}
  .faq-body{padding:0 22px 20px;color:var(--mist);font-size:14.8px;}

  /* ---------- CTA + 表单 ---------- */
  .cta-panel{
    display:grid;grid-template-columns:1.05fr .95fr;gap:40px;
    padding:38px;border-radius:24px;position:relative;overflow:hidden;
  }
  .cta-panel::after{
    content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
    background:radial-gradient(circle, rgba(77,225,255,0.22), transparent 68%);
  }
  .trust-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:22px;font-size:13.5px;color:var(--mist);}
  .trust-row i{display:inline-flex;width:16px;height:16px;margin-right:7px;color:var(--accent-2);vertical-align:-2px;}
  .form-grid{display:flex;flex-direction:column;gap:16px;position:relative;z-index:1;}
  .field label{display:block;font-size:13.5px;color:var(--mist);margin-bottom:7px;}
  .input,select,textarea{
    width:100%;height:47px;padding:0 15px;border-radius:var(--radius-sm);
    background:rgba(8,20,36,0.72);border:1px solid var(--line-strong);color:var(--text);
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
  }
  textarea{height:auto;min-height:112px;padding:12px 15px;resize:vertical;line-height:1.7;}
  .input:focus,select:focus,textarea:focus{
    outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(77,225,255,0.18);background:rgba(10,26,46,0.85);
  }
  .input::placeholder,textarea::placeholder{color:rgba(157,178,200,0.55);}
  .checkbox-row{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--mist);}
  .checkbox-row input{width:18px;height:18px;margin-top:3px;accent-color:#4DE1FF;}
  .form-note{font-size:12.5px;color:var(--mist);}
  .form-note.ok{color:var(--ok);}
  .form-note.err{color:var(--danger);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    border-top:1px solid rgba(77,225,255,0.22);
    background:linear-gradient(180deg, rgba(7,19,34,0.9), rgba(4,12,22,0.98));
    padding:60px 0 0;margin-top:40px;
  }
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:42px;}
  .footer-title{font-size:14px;font-weight:800;letter-spacing:.06em;margin-bottom:14px;color:var(--text);}
  .footer-link{display:block;color:var(--mist);font-size:14px;padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease);}
  .footer-link:hover{color:var(--accent);transform:translateX(3px);}
  .social-row{display:flex;gap:10px;margin-top:20px;}
  .social-dot{
    width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line);background:rgba(77,225,255,0.07);color:var(--accent);
  }
  .footer-bottom{
    border-top:1px solid rgba(77,225,255,0.14);
    padding:18px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:var(--mist);
  }
  .text-mist{color:var(--mist);}

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

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .nav-links{display:none;}
    .burger{display:inline-flex;}
    .desk-only{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .check-grid{grid-template-columns:1fr;}
    .faq-grid{grid-template-columns:1fr;gap:28px;}
    .faq-side{position:static;}
    .cta-panel{grid-template-columns:1fr;padding:30px;}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .section{padding:68px 0;}
  }
  @media (max-width:767px){
    .container-x{padding:0 18px;}
    body{font-size:15.5px;}
    .topbar-tip{display:none;}
    .nav-inner{height:64px;}
    .brand-text{font-size:15px;white-space:normal;line-height:1.25;max-width:170px;}
    .hero{padding:52px 0 58px;}
    .hero-sub{font-size:15.5px;}
    .hero-actions .btn{width:100%;}
    .safe-grid{grid-template-columns:1fr;}
    .entry-grid{grid-template-columns:1fr;}
    .timeline{padding-left:28px;}
    .timeline::before{left:8px;}
    .step{padding:18px;}
    .step::before{left:-26px;top:24px;}
    .section{padding:52px 0;}
    .section-sm{padding:44px 0;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
  }
  @media (max-width:520px){
    .hero h1{font-size:1.7rem;}
    .figure-card img{height:210px;}
  }

/* roulang page: category3 */
:root{
  --bg:#06111F;
  --bg-2:#0B1B31;
  --cyan:#4DE1FF;
  --mint:#5CE6B8;
  --amber:#F3C577;
  --coral:#FF8C7A;
  --text:#EAF6FF;
  --mist:#9DB2C8;
  --line:rgba(77,225,255,.18);
  --line-strong:rgba(120,190,255,.28);
  --glow:rgba(77,225,255,.45);
  --glass:rgba(12,32,54,.62);
  --glass-soft:rgba(12,32,54,.42);
  --radius-lg:20px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-card:0 8px 32px rgba(0,0,0,.35);
  --shadow-hover:0 16px 44px rgba(0,0,0,.48);
  --ease:200ms cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(77,225,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(77,225,255,.045) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  mask-image:radial-gradient(circle at 50% 12%,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 12%,rgba(0,0,0,.9),transparent 78%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:linear-gradient(118deg,rgba(77,225,255,.07),transparent 42%,rgba(92,230,184,.05) 78%,transparent);
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:750;line-height:1.28;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}

/* 布局容器 */
.container-x{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 28px;
  position:relative;
  z-index:2;
}
.section{padding:96px 0;position:relative;}
.section-sm{padding:72px 0;position:relative;}
.section-head{max-width:760px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.16em;
  color:var(--cyan);
  border:1px solid var(--line);
  background:rgba(77,225,255,.06);
  border-radius:999px;
  padding:6px 14px;
  text-transform:none;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px var(--glow);
}
.section-title{font-size:clamp(1.6rem,2.6vw,2.3rem);margin-top:20px;}
.section-desc{color:var(--mist);font-size:15.5px;margin-top:16px;max-width:720px;}
.divider-glow{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);}

/* 顶部信息条 */
.topbar{
  background:rgba(4,12,23,.86);
  border-bottom:1px solid rgba(77,225,255,.1);
  font-size:13px;
  backdrop-filter:blur(8px);
}
.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:38px;
  color:var(--mist);
}
.topbar-domain{color:rgba(234,246,255,.72);letter-spacing:.04em;font-variant-numeric:tabular-nums;}
.topbar-tip{color:var(--mist);}
.topbar-actions{display:flex;align-items:center;gap:18px;}
.topbar-actions a{color:rgba(234,246,255,.82);transition:color var(--ease);}
.topbar-actions a:hover{color:var(--cyan);}
.status-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 10px rgba(92,230,184,.7);
  display:inline-block;
  margin-right:-10px;
}

/* 主导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,17,31,.72);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(77,225,255,.16);
  box-shadow:0 1px 0 rgba(77,225,255,.28),0 12px 32px rgba(0,0,0,.35);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:70px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;flex-shrink:0;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(77,225,255,.9),rgba(92,230,184,.72));
  color:#04121F;
  font-weight:800;
  font-size:18px;
  box-shadow:0 0 22px rgba(77,225,255,.4);
}
.brand-text{
  font-size:16px;
  font-weight:750;
  letter-spacing:.02em;
  line-height:1.25;
  max-width:230px;
}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:14.5px;
  color:rgba(234,246,255,.78);
  border-radius:10px;
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:#fff;background:rgba(77,225,255,.08);}
.nav-link.active{color:var(--cyan);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--cyan);
  box-shadow:0 0 12px var(--glow);
}
.nav-cta{display:flex;align-items:center;gap:12px;}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 26px;
  border-radius:13px;
  font-size:15px;
  font-weight:650;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(120deg,#4DE1FF,#5CE6B8);
  color:#04121F;
  box-shadow:0 0 22px rgba(77,225,255,.38);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(77,225,255,.62);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 16px rgba(77,225,255,.32);}
.btn-ghost{
  background:rgba(12,32,54,.5);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(77,225,255,.12);border-color:var(--cyan);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;border-radius:11px;}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
.burger{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(12,32,54,.6);
  cursor:pointer;
}
.burger span,.burger span::before,.burger span::after{
  content:"";
  display:block;
  width:18px;height:2px;border-radius:2px;
  background:var(--text);
  position:relative;
  transition:transform var(--ease),opacity var(--ease);
}
.burger span::before{position:absolute;top:-6px;left:0;}
.burger span::after{position:absolute;top:6px;left:0;}
.burger.is-open span{background:transparent;}
.burger.is-open span::before{transform:translateY(6px) rotate(45deg);}
.burger.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

/* 移动抽屉 */
.drawer{
  position:fixed;
  inset:0;
  z-index:55;
  background:rgba(4,12,23,.97);
  backdrop-filter:blur(14px);
  padding:96px 24px 32px;
  display:flex;
  flex-direction:column;
  gap:8px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer a.drawer-link{
  font-size:19px;
  font-weight:700;
  padding:16px 4px;
  border-bottom:1px solid rgba(77,225,255,.12);
  color:rgba(234,246,255,.9);
}
.drawer a.drawer-link.active{color:var(--cyan);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.drawer-meta{font-size:13px;color:var(--mist);}

/* 玻璃面板 */
.glass{
  background:var(--glass);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.glass::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}

/* Hero */
.hero{
  position:relative;
  padding:84px 0 76px;
  overflow:hidden;
}
.hero-bg{
  position:absolute;
  inset:0;
  background-image:linear-gradient(100deg,rgba(6,17,31,.94),rgba(6,17,31,.72) 52%,rgba(6,17,31,.9)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.9;
  z-index:0;
}
.hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,transparent 55%,var(--bg));
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2rem,3.6vw,3.1rem);
  margin-top:22px;
  letter-spacing:.005em;
}
.hero-sub{
  color:var(--mist);
  font-size:16.5px;
  margin-top:20px;
  max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.metrics{
  display:flex;
  flex-wrap:wrap;
  gap:34px;
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid rgba(77,225,255,.14);
}
.metric-num{font-size:24px;font-weight:800;color:var(--cyan);}
.metric-label{font-size:13px;color:var(--mist);margin-top:2px;}

.hero-panel{padding:26px;}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.panel-title{font-size:15px;font-weight:700;}
.pill{
  font-size:12px;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid rgba(92,230,184,.4);
  color:var(--mint);
  background:rgba(92,230,184,.08);
}
.panel-list{margin-top:22px;display:flex;flex-direction:column;gap:14px;}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  padding:13px 15px;
  border-radius:var(--radius-sm);
  background:rgba(8,20,36,.6);
  border:1px solid rgba(120,190,255,.14);
  font-size:14px;
}
.panel-row span:first-child{color:var(--mist);}
.panel-row span:last-child{color:var(--text);font-weight:600;}
.badge-float{
  position:absolute;
  right:-6px;
  bottom:-6px;
  padding:10px 16px;
  border-radius:14px;
  background:linear-gradient(130deg,rgba(77,225,255,.94),rgba(92,230,184,.82));
  color:#04121F;
  font-size:13px;
  font-weight:800;
  box-shadow:0 10px 26px rgba(77,225,255,.36);
}
.panel-wrap{position:relative;}

/* 筛选标签 */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  min-height:38px;
  padding:0 18px;
  display:inline-flex;
  align-items:center;
  border-radius:999px;
  font-size:13.5px;
  color:rgba(234,246,255,.78);
  border:1px solid rgba(120,190,255,.2);
  background:rgba(12,32,54,.5);
  cursor:pointer;
  transition:all var(--ease);
}
.chip:hover{border-color:var(--cyan);color:#fff;background:rgba(77,225,255,.1);}
.chip.is-active{
  background:linear-gradient(120deg,rgba(77,225,255,.95),rgba(92,230,184,.8));
  color:#04121F;
  border-color:transparent;
  box-shadow:0 0 20px rgba(77,225,255,.34);
}

/* 内容矩阵 */
.matrix-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  margin-top:40px;
}
.lock-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-md);
  background:var(--glass);
  border:1px solid rgba(120,190,255,.16);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.lock-card:hover{
  transform:translateY(-4px);
  border-color:rgba(77,225,255,.55);
  box-shadow:var(--shadow-hover),0 0 0 1px rgba(77,225,255,.2);
}
.lock-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(140deg,#08203a,#0b1b31);}
.lock-media img{width:100%;height:100%;object-fit:cover;opacity:.86;transition:transform 320ms ease,opacity var(--ease);}
.lock-card:hover .lock-media img{transform:scale(1.04);opacity:.98;}
.lock-tag{
  position:absolute;
  left:12px;top:12px;
  font-size:11.5px;
  padding:4px 10px;
  border-radius:999px;
  background:rgba(4,12,23,.78);
  border:1px solid rgba(77,225,255,.34);
  color:var(--cyan);
  backdrop-filter:blur(6px);
}
.lock-tag.gold{border-color:rgba(243,197,119,.45);color:var(--amber);}
.lock-veil{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:linear-gradient(160deg,rgba(4,12,23,.78),rgba(6,17,31,.86));
  color:rgba(234,246,255,.86);
  font-size:13px;
  letter-spacing:.02em;
}
.lock-veil svg{color:var(--cyan);filter:drop-shadow(0 0 10px rgba(77,225,255,.6));}
.lock-card:hover .lock-veil{background:linear-gradient(160deg,rgba(4,12,23,.66),rgba(6,17,31,.76));}
.lock-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.lock-body h3{font-size:16.5px;}
.lock-body p{font-size:14px;color:var(--mist);line-height:1.75;flex:1;}
.lock-foot{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid rgba(120,190,255,.14);
  font-size:13px;
  color:var(--mist);
}
.lock-foot .arrow{color:var(--cyan);transition:transform var(--ease);}
.lock-card:hover .lock-foot .arrow{transform:translateX(4px);}
.empty-matrix{
  margin-top:32px;
  padding:44px 28px;
  text-align:center;
  border-radius:var(--radius-md);
  border:1px dashed rgba(77,225,255,.28);
  background:rgba(12,32,54,.4);
  color:var(--mist);
  font-size:14.5px;
}

/* 推荐浏览顺序 */
.route-list{margin-top:40px;display:flex;flex-direction:column;gap:16px;}
.route-item{
  display:grid;
  grid-template-columns:88px minmax(0,1fr) auto;
  gap:22px;
  align-items:center;
  padding:22px 26px;
  border-radius:var(--radius-md);
  background:linear-gradient(100deg,rgba(12,32,54,.72),rgba(12,32,54,.42));
  border:1px solid rgba(120,190,255,.16);
  transition:border-color var(--ease),transform var(--ease),background var(--ease);
}
.route-item:hover{border-color:rgba(77,225,255,.5);transform:translateX(4px);}
.route-index{
  font-size:28px;
  font-weight:800;
  color:rgba(77,225,255,.55);
  font-variant-numeric:tabular-nums;
}
.route-item h3{font-size:16.5px;}
.route-item p{font-size:14px;color:var(--mist);margin-top:6px;}
.route-badge{
  font-size:12.5px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(77,225,255,.3);
  color:var(--cyan);
  background:rgba(77,225,255,.07);
  white-space:nowrap;
}

/* 双列说明 */
.dual-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;margin-top:40px;}
.info-panel{padding:30px;border-radius:var(--radius-lg);}
.info-panel h3{font-size:18px;margin-bottom:14px;}
.info-panel p{font-size:14.5px;color:var(--mist);}
.info-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
.info-list li{display:flex;gap:12px;font-size:14.5px;color:rgba(234,246,255,.86);align-items:flex-start;}
.info-list li::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 8px var(--glow);
  margin-top:11px;
  flex-shrink:0;
}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start;}
.faq-sticky{position:sticky;top:110px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
details.faq-item{
  border-radius:var(--radius-md);
  border:1px solid rgba(120,190,255,.16);
  background:var(--glass-soft);
  overflow:hidden;
  transition:border-color var(--ease),background var(--ease);
}
details.faq-item[open]{
  border-color:rgba(77,225,255,.5);
  background:rgba(14,38,62,.72);
}
details.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:18px 22px;
  font-size:15.5px;
  font-weight:650;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
details.faq-item summary::-webkit-details-marker{display:none;}
.faq-sign{
  position:relative;
  width:16px;height:16px;flex-shrink:0;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:0;top:7px;
  width:16px;height:2px;border-radius:2px;
  background:var(--cyan);
  transition:transform var(--ease);
}
.faq-sign::after{transform:rotate(90deg);}
details.faq-item[open] .faq-sign::after{transform:rotate(0deg);}
details.faq-item p{
  padding:0 22px 20px;
  font-size:14.5px;
  color:var(--mist);
}

/* CTA 面板 */
.cta-panel{
  border-radius:calc(var(--radius-lg) + 4px);
  padding:44px;
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  gap:44px;
  align-items:center;
  background:
    linear-gradient(120deg,rgba(77,225,255,.1),transparent 46%),
    var(--glass);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.cta-panel h2{font-size:clamp(1.5rem,2.4vw,2.1rem);}
.cta-panel p{color:var(--mist);font-size:15px;margin-top:16px;max-width:480px;}
.trust-row{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;font-size:13.5px;color:rgba(234,246,255,.8);}
.trust-row span{display:inline-flex;align-items:center;gap:8px;}
.trust-row span::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--mint);box-shadow:0 0 8px rgba(92,230,184,.7);
}
.form-card{
  background:rgba(6,17,31,.66);
  border:1px solid rgba(120,190,255,.18);
  border-radius:var(--radius-md);
  padding:26px;
}
.form-field{margin-bottom:16px;}
.form-label{display:block;font-size:13.5px;color:var(--mist);margin-bottom:8px;}
.input{
  width:100%;
  min-height:46px;
  padding:0 16px;
  border-radius:12px;
  background:rgba(8,20,36,.72);
  border:1px solid rgba(120,190,255,.2);
  color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
textarea.input{min-height:110px;padding:12px 16px;resize:vertical;}
.input::placeholder{color:rgba(157,178,200,.6);}
.input:focus{
  border-color:var(--cyan);
  box-shadow:0 0 0 4px rgba(77,225,255,.14);
  outline:none;
  background:rgba(8,20,36,.9);
}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--mist);margin:6px 0 18px;}
.check-row input{margin-top:5px;accent-color:#4DE1FF;}
.form-hint{font-size:12.5px;color:rgba(157,178,200,.78);margin-top:12px;}
.form-ok{color:var(--mint);font-size:13px;margin-top:10px;}

/* 页脚 */
.site-footer{
  margin-top:40px;
  border-top:1px solid rgba(77,225,255,.16);
  background:linear-gradient(180deg,rgba(6,17,31,.4),rgba(4,12,23,.92));
  padding:64px 0 28px;
  position:relative;
  z-index:2;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-title{font-size:13px;letter-spacing:.12em;color:rgba(234,246,255,.7);margin-bottom:16px;}
.footer-link{
  display:block;
  font-size:14px;
  color:var(--mist);
  padding:6px 0;
  transition:color var(--ease),transform var(--ease);
}
.footer-link:hover{color:var(--cyan);transform:translateX(3px);}
.social-row{display:flex;gap:10px;margin-top:22px;}
.social-dot{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:11px;
  border:1px solid rgba(120,190,255,.2);
  background:rgba(12,32,54,.5);
  color:var(--mist);
}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid rgba(120,190,255,.12);
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(157,178,200,.86);
}
.text-mist{color:var(--mist);}

/* 响应式 */
@media (max-width:1024px){
  .container-x{padding:0 24px;}
  .section{padding:76px 0;}
  .nav-links,.nav-cta .desk-only{display:none;}
  .burger{display:inline-flex;}
  .hero{padding:60px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .dual-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .faq-sticky{position:static;}
  .cta-panel{grid-template-columns:1fr;padding:34px;gap:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .route-item{grid-template-columns:64px minmax(0,1fr);}
  .route-badge{grid-column:2;justify-self:start;}
}
@media (max-width:640px){
  body{font-size:15.5px;}
  .container-x{padding:0 18px;}
  .section{padding:56px 0;}
  .section-sm{padding:48px 0;}
  .hero{padding:44px 0;}
  .hero h1{font-size:1.85rem;}
  .hero-sub{font-size:15.5px;}
  .metrics{gap:22px;}
  .matrix-grid{grid-template-columns:1fr;gap:20px;}
  .topbar-tip{display:none;}
  .topbar-inner{min-height:36px;font-size:12.5px;}
  .brand-text{font-size:14.5px;max-width:170px;}
  .btn{width:100%;}
  .hero-actions{gap:12px;}
  .cta-panel{padding:26px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .route-item{padding:18px;}
  .chip{font-size:13px;padding:0 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category4 */
:root{
    --ink:#06111F;
    --ink-2:#0B1B31;
    --cyan:#4DE1FF;
    --mint:#5CE6B8;
    --amber:#F5B451;
    --coral:#FF7A6B;
    --text:#EAF6FF;
    --mist:#9DB2C8;
    --line:rgba(77,225,255,.18);
    --line-soft:rgba(120,190,255,.18);
    --glow:rgba(77,225,255,.45);
    --glass:rgba(12,32,54,.62);
    --glass-2:rgba(16,42,70,.78);
    --radius:18px;
    --shadow:0 8px 32px rgba(0,0,0,.35);
    --shadow-lg:0 18px 48px rgba(0,0,0,.45);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--ink);
    color:var(--text);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16.5px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
    background-image:
      linear-gradient(rgba(77,225,255,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(77,225,255,.045) 1px,transparent 1px);
    background-size:64px 64px;
  }
  body::after{
    content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
    background:linear-gradient(118deg,transparent 28%,rgba(77,225,255,.055) 48%,transparent 68%);
  }
  img{max-width:100%;display:block}
  a{color:inherit}
  button{font-family:inherit}
  h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:750;letter-spacing:.2px}
  p{margin:0}
  .num{font-variant-numeric:tabular-nums}
  .container-x{width:100%;max-width:var(--container);margin:0 auto;padding:0 26px}
  .site-header,.site-footer,.topbar,main{position:relative;z-index:1}

  /* 顶部信息条 */
  .topbar{background:rgba(4,12,22,.86);border-bottom:1px solid rgba(77,225,255,.12);font-size:13px;color:var(--mist)}
  .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:38px}
  .topbar-domain{display:flex;align-items:center;gap:8px;color:#B9CDE0;letter-spacing:.3px}
  .topbar-domain .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px rgba(92,230,184,.8)}
  .topbar-mid{opacity:.85}
  .topbar-actions{display:flex;align-items:center;gap:16px}
  .topbar-actions a{text-decoration:none;color:#CFE2F2;transition:color .18s}
  .topbar-actions a:hover{color:var(--cyan)}
  .status-dot{width:7px;height:7px;border-radius:50%;background:var(--mint);display:inline-block;box-shadow:0 0 10px rgba(92,230,184,.9);margin-right:6px}

  /* 主导航 */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(6,17,31,.74);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(77,225,255,.1);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
  .brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--text);min-width:0}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;flex:0 0 34px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,rgba(77,225,255,.95),rgba(92,230,184,.85));
    color:#04121F;font-weight:800;font-size:17px;
    box-shadow:0 0 18px rgba(77,225,255,.35);
  }
  .brand-text{font-weight:700;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-link{
    position:relative;padding:10px 14px;border-radius:10px;font-size:15px;
    color:var(--mist);text-decoration:none;transition:color .18s,background .18s;
  }
  .nav-link:hover{color:var(--text);background:rgba(77,225,255,.08)}
  .nav-link.active{color:var(--text)}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
    background:var(--cyan);border-radius:2px;box-shadow:0 0 10px var(--glow);
  }
  .nav-link.active::before{
    content:"";position:absolute;left:50%;bottom:-1px;width:5px;height:5px;border-radius:50%;
    transform:translateX(-50%);background:var(--cyan);box-shadow:0 0 10px var(--glow);
  }
  .nav-cta{display:flex;align-items:center;gap:12px}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 24px;border-radius:13px;
    font-size:15px;font-weight:650;text-decoration:none;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .btn-primary{
    background:linear-gradient(135deg,#4DE1FF,#5CE6B8);
    color:#04121F;
    box-shadow:0 0 0 1px rgba(77,225,255,.35),0 10px 28px rgba(77,225,255,.28);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(77,225,255,.6),0 16px 36px rgba(77,225,255,.4)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(77,225,255,.35),0 6px 16px rgba(77,225,255,.22)}
  .btn-ghost{
    background:rgba(12,32,54,.6);border-color:rgba(120,190,255,.28);color:var(--text);
  }
  .btn-ghost:hover{background:rgba(20,48,78,.85);border-color:rgba(77,225,255,.5);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:11px}
  .btn:focus-visible,.nav-link:focus-visible,.footer-link:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--cyan);outline-offset:2px;
  }
  .btn-block{width:100%}

  /* 汉堡 */
  .burger{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid rgba(120,190,255,.25);background:rgba(12,32,54,.6);
    cursor:pointer;position:relative;
  }
  .burger span,.burger span::before,.burger span::after{
    position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;
    transform:translateX(-50%);transition:transform .2s ease-out,opacity .2s ease-out;
  }
  .burger span{top:50%;margin-top:-1px}
  .burger span::before{content:"";left:0;transform:none;top:-6px}
  .burger span::after{content:"";left:0;transform:none;top:6px}
  .burger[aria-expanded="true"] span{background:transparent}
  .burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
  .burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

  /* 抽屉 */
  .drawer{
    position:fixed;inset:0;z-index:60;background:rgba(4,12,22,.97);
    backdrop-filter:blur(6px);
    transform:translateX(100%);transition:transform .26s ease-out;
    display:flex;flex-direction:column;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:68px;padding:0 20px;border-bottom:1px solid var(--line)}
  .drawer-close{width:40px;height:40px;border-radius:11px;border:1px solid rgba(120,190,255,.25);background:transparent;color:var(--text);font-size:20px;cursor:pointer}
  .drawer-nav{display:flex;flex-direction:column;padding:22px 20px;gap:6px;flex:1}
  .drawer-nav a{
    padding:16px 12px;font-size:19px;font-weight:650;color:var(--text);text-decoration:none;
    border-radius:14px;border-bottom:1px solid rgba(120,190,255,.1);
  }
  .drawer-nav a.active{color:var(--cyan);background:rgba(77,225,255,.08)}
  .drawer-foot{padding:18px 20px 26px;border-top:1px solid var(--line)}

  /* 通用板块 */
  section{padding:84px 0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:9px;
    padding:7px 14px;border-radius:999px;
    border:1px solid rgba(77,225,255,.3);background:rgba(77,225,255,.07);
    font-size:13px;color:#BFE8FA;letter-spacing:.4px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--glow)}
  .sec-title{font-size:clamp(1.5rem,2.4vw,2.1rem);font-weight:760}
  .sec-sub{color:var(--mist);font-size:15.5px;max-width:720px}
  .card{
    background:var(--glass);
    border:1px solid var(--line-soft);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    position:relative;
    overflow:hidden;
    transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  }
  .card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(77,225,255,.5),transparent);
  }
  .card:hover{transform:translateY(-3px);border-color:rgba(77,225,255,.42);box-shadow:var(--shadow-lg)}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12.5px;padding:5px 11px;border-radius:999px;
    border:1px solid rgba(120,190,255,.25);color:#BBD3E6;background:rgba(8,20,36,.6);
  }
  .tag-mint{border-color:rgba(92,230,184,.4);color:var(--mint)}
  .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(77,225,255,.35),transparent)}

  /* Hero */
  .hero{padding:66px 0 76px;position:relative;overflow:hidden}
  .hero::before{
    content:"";position:absolute;top:-180px;right:-120px;width:620px;height:620px;border-radius:50%;
    background:radial-gradient(circle,rgba(77,225,255,.16),transparent 66%);pointer-events:none;
  }
  .hero-grid{display:grid;grid-template-columns:1.2fr .9fr;gap:52px;align-items:center;position:relative;z-index:1}
  .hero h1{font-size:clamp(2rem,3.6vw,3rem);margin:22px 0 20px;font-weight:800}
  .hero h1 .accent{color:var(--cyan);text-shadow:0 0 26px rgba(77,225,255,.4)}
  .hero-lead{color:#C6DAEA;font-size:17px;max-width:620px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .metrics{display:flex;flex-wrap:wrap;gap:34px;margin-top:38px}
  .metric-val{font-size:26px;font-weight:780;color:#fff}
  .metric-label{font-size:13px;color:var(--mist)}
  .hero-panel{
    border-radius:22px;border:1px solid rgba(120,190,255,.24);
    background-image:linear-gradient(180deg,rgba(6,17,31,.5),rgba(6,17,31,.92)),url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    box-shadow:0 26px 60px rgba(0,0,0,.5);
    padding:26px;position:relative;
  }
  .status-card{
    background:rgba(8,20,36,.78);border:1px solid rgba(120,190,255,.22);
    border-radius:16px;padding:18px 20px;
  }
  .status-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;font-size:14px;color:#C6DAEA}
  .status-row + .status-row{border-top:1px dashed rgba(120,190,255,.16)}
  .float-badge{
    position:absolute;right:-12px;bottom:-16px;
    background:linear-gradient(135deg,rgba(77,225,255,.95),rgba(92,230,184,.9));
    color:#04121F;font-weight:750;font-size:13px;padding:10px 16px;border-radius:14px;
    box-shadow:0 14px 34px rgba(77,225,255,.36);
  }

  /* 目录卡 */
  .dir-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
  .dir-card{
    display:block;text-decoration:none;color:var(--text);
    background:var(--glass);border:1px solid var(--line-soft);border-radius:var(--radius);
    padding:26px 24px 24px;position:relative;overflow:hidden;
    transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
  }
  .dir-card:hover{transform:translateY(-4px);border-color:rgba(77,225,255,.45);box-shadow:var(--shadow-lg)}
  .dir-num{
    font-size:13px;color:var(--cyan);letter-spacing:1px;font-weight:700;
  }
  .dir-card h3{font-size:18px;margin:12px 0 10px}
  .dir-card p{color:var(--mist);font-size:14.5px;line-height:1.75}
  .dir-more{margin-top:16px;font-size:14px;color:var(--cyan);display:inline-flex;align-items:center;gap:6px}
  .dir-corner{
    position:absolute;top:0;right:0;width:54px;height:54px;
    background:linear-gradient(225deg,rgba(77,225,255,.22),transparent 70%);
    clip-path:polygon(100% 0,0 0,100% 100%);
  }

  /* FAQ */
  .faq-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:46px;margin-top:40px;align-items:start}
  .faq-side{position:sticky;top:104px}
  .faq-group-title{
    display:flex;align-items:center;gap:10px;font-size:14px;color:#BBD3E6;
    letter-spacing:.5px;margin:34px 0 14px;
  }
  .faq-group-title::before{content:"";width:3px;height:16px;border-radius:2px;background:var(--cyan);box-shadow:0 0 10px var(--glow)}
  .faq-group-title:first-child{margin-top:0}
  .faq-list{display:flex;flex-direction:column;gap:14px}
  .faq-item{
    background:var(--glass);border:1px solid var(--line-soft);border-radius:16px;
    transition:border-color .2s ease-out,background .2s ease-out,box-shadow .2s ease-out;
  }
  .faq-item:hover{border-color:rgba(77,225,255,.36)}
  .faq-item[open]{border-color:rgba(77,225,255,.55);background:var(--glass-2);box-shadow:0 14px 36px rgba(0,0,0,.4)}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:22px 24px;cursor:pointer;list-style:none;
    font-size:17.5px;font-weight:650;color:var(--text);
  }
  .faq-q::-webkit-details-marker{display:none}
  .faq-q::marker{content:""}
  .faq-icon{
    position:relative;flex:0 0 28px;width:28px;height:28px;border-radius:50%;
    border:1px solid rgba(77,225,255,.42);background:rgba(77,225,255,.08);
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--cyan);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-icon::before{width:12px;height:2px}
  .faq-icon::after{width:2px;height:12px;transition:transform .22s ease-out,opacity .22s ease-out}
  .faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
  .faq-a{padding:0 24px 24px;color:#B7CCDF;font-size:15.5px;line-height:1.88;max-width:900px}
  .faq-a strong{color:var(--text)}

  /* 表单 */
  .contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
  .contact-side-list{display:flex;flex-direction:column;gap:14px;margin-top:26px}
  .contact-side-item{
    display:flex;gap:14px;padding:16px 18px;border-radius:14px;
    background:rgba(8,20,36,.55);border:1px solid rgba(120,190,255,.16);
  }
  .contact-side-item .ic{
    flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
    background:rgba(77,225,255,.12);border:1px solid rgba(77,225,255,.3);color:var(--cyan);
  }
  .form-panel{
    background:var(--glass);border:1px solid var(--line-soft);border-radius:20px;
    box-shadow:var(--shadow);padding:30px;position:relative;overflow:hidden;
  }
  .form-panel::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(77,225,255,.55),transparent);
  }
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .field{display:flex;flex-direction:column}
  .field-full{grid-column:1/-1}
  .field label{font-size:13.5px;color:var(--mist);margin-bottom:8px}
  .input,select,textarea{
    width:100%;height:46px;border-radius:12px;
    background:rgba(8,20,36,.72);border:1px solid rgba(120,190,255,.22);
    color:var(--text);padding:0 14px;font-size:15px;font-family:inherit;
    transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
  }
  textarea{height:auto;min-height:128px;padding:13px 14px;line-height:1.7;resize:vertical}
  .input::placeholder,textarea::placeholder{color:#6E8398}
  .input:focus,select:focus,textarea:focus{
    outline:none;border-color:var(--cyan);background:rgba(10,26,46,.9);
    box-shadow:0 0 0 3px rgba(77,225,255,.16);
  }
  .form-hint{font-size:12.5px;color:var(--mist);margin-top:14px;line-height:1.7}
  .form-note-success{color:var(--mint)}
  .form-note-error{color:var(--coral)}
  .form-status{
    display:none;margin-top:14px;font-size:13.5px;padding:12px 14px;border-radius:12px;
  }
  .form-status.ok{display:block;color:var(--mint);background:rgba(92,230,184,.1);border:1px solid rgba(92,230,184,.35)}
  .form-status.err{display:block;color:var(--coral);background:rgba(255,122,107,.1);border:1px solid rgba(255,122,107,.35)}
  .check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--mist);margin-top:18px}
  .check-row input{width:16px;height:16px;margin-top:4px;accent-color:#4DE1FF}

  /* 服务时间 */
  .hours-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
  .hours-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .hours-card{
    background:var(--glass);border:1px solid var(--line-soft);border-radius:16px;padding:22px;
    transition:border-color .2s ease-out,transform .2s ease-out;
  }
  .hours-card:hover{border-color:rgba(77,225,255,.4);transform:translateY(-3px)}
  .hours-card h4{font-size:16px;margin-bottom:8px}
  .hours-card p{font-size:14.5px;color:var(--mist);line-height:1.75}
  .hours-time{font-size:22px;font-weight:780;color:var(--cyan);margin-bottom:6px}
  .cover-frame{
    border-radius:20px;overflow:hidden;border:1px solid rgba(120,190,255,.22);
    box-shadow:0 20px 48px rgba(0,0,0,.5);position:relative;
  }
  .cover-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
  .cover-frame::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,transparent 45%,rgba(6,17,31,.72));
  }

  /* 页脚 */
  .site-footer{border-top:1px solid rgba(77,225,255,.2);background:rgba(4,12,22,.72);padding:62px 0 0;margin-top:20px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding-bottom:48px}
  .footer-title{font-size:14px;font-weight:700;color:#DCEBF7;margin-bottom:16px;letter-spacing:.4px}
  .footer-link{display:block;color:var(--mist);font-size:14px;text-decoration:none;margin-bottom:10px;transition:color .18s,transform .18s}
  .footer-link:hover{color:var(--cyan);transform:translateX(2px)}
  .social-row{display:flex;gap:10px;margin-top:22px}
  .social-dot{
    width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
    border:1px solid rgba(120,190,255,.22);color:var(--mist);background:rgba(8,20,36,.5);
  }
  .footer-bottom{
    border-top:1px solid rgba(120,190,255,.14);
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0 26px;font-size:13px;color:var(--mist);flex-wrap:wrap;
  }

  /* 响应式 */
  @media (max-width:1023px){
    .nav-links{display:none}
    .burger{display:block}
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .hero h1{font-size:2rem}
    .dir-grid{grid-template-columns:repeat(2,1fr)}
    .faq-wrap{grid-template-columns:1fr;gap:28px}
    .faq-side{position:static}
    .contact-grid{grid-template-columns:1fr;gap:32px}
    .hours-grid{grid-template-columns:1fr;gap:30px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .float-badge{right:12px;bottom:-14px}
  }
  @media (max-width:640px){
    body{font-size:15.8px}
    .container-x{padding:0 18px}
    section{padding:58px 0}
    .hero{padding:48px 0 56px}
    .topbar-mid{display:none}
    .brand-text{font-size:14.5px;white-space:normal;line-height:1.25}
    .dir-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .hours-cards{grid-template-columns:1fr}
    .form-grid{grid-template-columns:1fr}
    .form-panel{padding:22px}
    .faq-q{font-size:16px;padding:18px 18px}
    .faq-a{padding:0 18px 20px}
    .btn{width:100%}
    .btn-sm{width:auto}
    .hero-actions{flex-direction:column}
    .metrics{gap:22px}
    .metric-val{font-size:22px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  }