/* roulang page: index */
:root{
  --bg-900:#060A14;
  --bg-800:#0A1123;
  --bg-700:rgba(16,26,48,.62);
  --brand:#16E0B8;
  --brand-deep:#0BA88A;
  --accent:#FF7A3D;
  --tech:#5B7CFF;
  --text:#E9EFF9;
  --text-2:#A6B3CB;
  --text-3:#6C7C99;
  --line:rgba(122,158,214,.14);
  --line-2:rgba(122,158,214,.26);
  --success:#2FD48A;
  --warn:#FFB13D;
  --danger:#FF5F6D;
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 8px 28px rgba(2,8,20,.55);
  --glow-near:0 0 22px rgba(22,224,184,.35);
  --glow-far:0 10px 34px rgba(22,224,184,.18);
  --container:1200px;
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before,body::after{
  content:"";
  position:fixed;
  width:760px;
  height:760px;
  border-radius:50%;
  pointer-events:none;
  z-index:0;
  filter:blur(10px);
}
body::before{
  top:-320px;
  left:-260px;
  background:radial-gradient(circle,rgba(22,224,184,.16),rgba(22,224,184,0) 62%);
}
body::after{
  right:-320px;
  bottom:-360px;
  background:radial-gradient(circle,rgba(91,124,255,.16),rgba(91,124,255,0) 64%);
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  position:relative;
  z-index:1;
}
.section{padding:88px 0;position:relative;z-index:1;}
.section--tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
h1,h2,h3{font-weight:700;}
h1{font-size:clamp(28px,5vw,46px);line-height:1.2;}
h2{font-size:clamp(22px,3.4vw,34px);line-height:1.3;margin-bottom:14px;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{color:var(--text-2);}
.lead{font-size:17px;line-height:1.8;color:var(--text-2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);
  padding:6px 14px;
  border:1px solid rgba(22,224,184,.32);
  border-radius:999px;
  background:rgba(22,224,184,.08);
  margin-bottom:18px;
}
.muted{color:var(--text-3);font-size:14px;}
.mono{font-family:var(--mono);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 26px;
  height:48px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04231C;
  border:1px solid rgba(255,255,255,.22);
  box-shadow:var(--glow-near),var(--glow-far);
}
.btn-primary:hover{
  transform:translateY(-1px);
  color:#04231C;
  box-shadow:0 0 30px rgba(22,224,184,.48),0 14px 40px rgba(22,224,184,.24);
}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(16,26,48,.5);
  border:1px solid var(--line-2);
  color:var(--text);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(22,224,184,.55);color:var(--brand);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;
  background:rgba(91,124,255,.14);
  border:1px solid rgba(91,124,255,.30);
  color:#B7C6FF;
}
.badge--brand{background:rgba(22,224,184,.12);border-color:rgba(22,224,184,.34);color:var(--brand);}
.badge--accent{background:rgba(255,122,61,.14);border-color:rgba(255,122,61,.36);color:#FFB48A;}

.glass{
  background:var(--bg-700);
  border:1px solid rgba(122,158,214,.16);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px);
  transition:transform .2s ease,border-color .2s ease;
}
.glass:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  height:72px;
  display:flex;align-items:center;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.86);
  border-bottom-color:var(--line);
  backdrop-filter:blur(16px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(22,224,184,.9),rgba(91,124,255,.75));
  color:#04231C;font-size:17px;
  box-shadow:var(--glow-near);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-name{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.06em;}

.main-nav ul{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;
  font-size:15px;color:var(--text-2);
  padding:6px 2px;
  display:inline-block;
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--tech));
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--text);}
.main-nav a:hover::after,.main-nav a.is-active::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand);}
.header-actions{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.header-link{font-size:14px;color:var(--text-2);}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-2);
  background:rgba(16,26,48,.55);
  color:var(--text);font-size:17px;
  place-items:center;
}
.mobile-drawer{
  position:fixed;inset:72px 0 0 0;z-index:110;
  background:rgba(6,10,20,.94);
  backdrop-filter:blur(18px);
  padding:24px 20px 100px;
  display:none;
  flex-direction:column;gap:6px;
  overflow-y:auto;
}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer a{
  padding:16px 18px;border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(16,26,48,.45);
  font-size:16px;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;
}
.mobile-drawer a.is-active{color:var(--brand);border-color:rgba(22,224,184,.4);}
.mobile-drawer .btn{margin-top:14px;}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:60px 0 76px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.42;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(6,10,20,.95) 0%,rgba(6,10,20,.82) 42%,rgba(6,10,20,.62) 100%),
    repeating-linear-gradient(115deg,rgba(122,158,214,.05) 0 1px,transparent 1px 74px);
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:55fr 45fr;
  gap:48px;align-items:center;
  min-height:520px;
}
.hero-copy h1{margin-bottom:18px;}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),#8FF3E0 55%,var(--tech));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text-2);max-width:560px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;}
.hero-points span{
  display:inline-flex;align-items:center;gap:7px;
  font-size:13px;color:var(--text-2);
  padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,26,48,.5);
}
.hero-points i{color:var(--brand);font-size:12px;}

.login-card{padding:26px;border-radius:var(--r-lg);}
.login-card h2{font-size:20px;margin-bottom:6px;}
.login-card .login-note{font-size:14px;color:var(--text-3);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;}
.field input[type="text"],
.field input[type="password"]{
  width:100%;height:48px;padding:0 14px;
  background:rgba(6,10,20,.6);
  border:1px solid var(--line-2);
  border-radius:var(--r-sm);
  color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#5C6B85;}
.field input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(22,224,184,.16);
}
.field-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.check input{width:16px;height:16px;accent-color:var(--brand);}
.field-hint{font-size:12px;color:var(--danger);min-height:16px;margin-top:6px;}
.login-foot{margin-top:16px;font-size:13px;color:var(--text-3);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.login-foot a{color:var(--text-2);}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  padding:26px;border-radius:var(--r-lg);
}
.stat-item{text-align:center;padding:6px 10px;}
.stat-num{
  font-family:var(--mono);font-size:26px;font-weight:700;color:var(--brand);
  display:block;line-height:1.2;
}
.stat-label{font-size:13px;color:var(--text-3);}

/* ---------- 权益对比 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.plan-card{padding:24px;display:flex;flex-direction:column;position:relative;}
.plan-card.is-featured{
  border-color:rgba(22,224,184,.5);
  box-shadow:0 0 0 1px rgba(22,224,184,.28),var(--shadow-card);
}
.plan-flag{
  position:absolute;top:-12px;right:20px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04231C;
}
.plan-name{font-size:20px;font-weight:600;margin-bottom:6px;}
.plan-desc{font-size:14px;color:var(--text-3);margin-bottom:18px;}
.plan-list{margin:0 0 22px;border-top:1px solid var(--line);}
.plan-list li{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 0;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--text-2);
}
.plan-list li b{font-weight:500;color:var(--text);}
.plan-list .ok{color:var(--success);}
.plan-list .no{color:#4C5A73;}
.plan-list .val{font-family:var(--mono);font-size:13px;color:var(--brand);}
.plan-card .btn{margin-top:auto;}

/* ---------- 等级阶梯 ---------- */
.ladder{position:relative;padding-left:46px;}
.ladder::before{
  content:"";position:absolute;left:16px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(22,224,184,.8),rgba(91,124,255,.35),rgba(22,224,184,0));
}
.ladder-item{position:relative;margin-bottom:20px;}
.ladder-dot{
  position:absolute;left:-38px;top:26px;
  width:14px;height:14px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(22,224,184,.16),var(--glow-near);
}
.level-card{padding:22px 24px;}
.level-head{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;}
.level-tag{
  font-family:var(--mono);font-size:13px;font-weight:700;
  color:#04231C;background:var(--brand);
  border-radius:8px;padding:3px 9px;
}
.level-card h3{font-size:18px;}
.level-card p{font-size:15px;margin-bottom:12px;}
.level-points{display:flex;flex-wrap:wrap;gap:10px;}
.level-points span{
  font-size:13px;color:var(--text-2);
  padding:6px 12px;border-radius:999px;
  border:1px dashed var(--line-2);
  background:rgba(6,10,20,.4);
}
.ladder-item:nth-child(2){margin-left:28px;}
.ladder-item:nth-child(3){margin-left:56px;}
.ladder-item:nth-child(4){margin-left:84px;}

/* ---------- 内容预览 ---------- */
.preview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.preview-card{overflow:hidden;padding:0;display:flex;flex-direction:column;}
.preview-media{position:relative;aspect-ratio:16/10;overflow:hidden;border-radius:var(--r-lg) var(--r-lg) 0 0;}
.preview-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease;}
.preview-card:hover .preview-media img{transform:scale(1.04);}
.preview-lock{
  position:absolute;inset:0;
  display:grid;place-items:center;
  background:linear-gradient(180deg,rgba(6,10,20,.28),rgba(6,10,20,.78));
  backdrop-filter:blur(6px);
}
.preview-lock i{
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(6,10,20,.66);
  border:1px solid rgba(22,224,184,.45);
  color:var(--brand);font-size:18px;
}
.preview-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.preview-body h3{font-size:18px;}
.preview-body p{font-size:15px;}
.preview-body .btn{margin-top:auto;align-self:flex-start;}
.preview-grid .preview-card:nth-child(2){margin-top:32px;}
.preview-grid .preview-card:nth-child(4){margin-top:32px;}

/* ---------- 资讯列表 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.news-head h2{margin-bottom:6px;}
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:20px;grid-auto-rows:minmax(200px,auto);}
.news-card{padding:22px;display:flex;flex-direction:column;gap:12px;}
.news-card--lead{grid-row:span 2;}
.news-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-title{font-size:17px;font-weight:600;line-height:1.55;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card--lead .news-title{font-size:22px;}
.news-card:hover .news-title{color:var(--brand);}
.news-sum{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.news-meta time{font-family:var(--mono);}
.news-empty{
  min-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  text-align:center;padding:32px;
  grid-column:1/-1;
}
.news-empty i{font-size:26px;color:var(--text-3);}
.news-empty p{font-size:15px;color:var(--text-3);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:rgba(16,26,48,.45);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item[open]{border-color:rgba(22,224,184,.4);background:rgba(16,26,48,.7);}
.faq-q{
  display:flex;align-items:center;gap:14px;
  padding:18px 20px;min-height:60px;
  cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-idx{font-family:var(--mono);font-size:13px;color:var(--brand);flex-shrink:0;}
.faq-text{flex:1;}
.faq-mark{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.faq-mark::before{width:14px;height:2px;}
.faq-mark::after{width:2px;height:14px;}
.faq-item[open] .faq-mark::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{padding:0 20px 20px 52px;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  padding:44px;
  border-radius:24px;
  background:
    radial-gradient(120% 160% at 12% 0%,rgba(22,224,184,.18),rgba(6,10,20,0) 58%),
    radial-gradient(120% 160% at 92% 100%,rgba(91,124,255,.20),rgba(6,10,20,0) 60%),
    rgba(16,26,48,.62);
  border:1px solid rgba(122,158,214,.2);
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1.4fr auto;gap:30px;align-items:center;
}
.cta-band h2{margin-bottom:10px;}
.cta-band p{max-width:620px;}
.cta-assure{display:flex;flex-wrap:wrap;gap:16px;margin-top:20px;}
.cta-assure span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}
.cta-assure i{color:var(--success);font-size:12px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;min-width:200px;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;z-index:1;
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:56px 0 28px;
  margin-top:20px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand p{font-size:14px;color:var(--text-3);margin:16px 0 18px;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text);}
.footer-col li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom span{font-family:var(--mono);}

/* ---------- 移动底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:130;
  background:rgba(8,13,26,.92);
  backdrop-filter:blur(18px);
  border-top:1px solid var(--line);
  padding:8px 4px calc(8px + env(safe-area-inset-bottom));
}
.tabbar ul{display:grid;grid-template-columns:repeat(4,1fr);}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  position:relative;padding:6px 0;
  font-size:11px;color:var(--text-3);
}
.tabbar i{font-size:19px;line-height:1;}
.tabbar a.is-active{color:var(--brand);}
.tabbar a.is-active::before{
  content:"";position:absolute;top:-8px;width:26px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:var(--glow-near);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .main-nav ul{gap:18px;}
  .main-nav a{font-size:14px;}
  .logo-name{font-size:15px;}
}
@media (max-width:992px){
  .main-nav,.header-link{display:none;}
  .nav-toggle{display:grid;}
  .hero-inner{grid-template-columns:1fr;gap:36px;min-height:0;}
  .hero{padding:44px 0 60px;}
  .plan-grid{grid-template-columns:1fr;}
  .preview-grid{grid-template-columns:1fr;}
  .preview-grid .preview-card:nth-child(2),
  .preview-grid .preview-card:nth-child(4){margin-top:0;}
  .news-grid{grid-template-columns:1fr;}
  .news-card--lead{grid-row:auto;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .ladder{padding-left:34px;}
  .ladder-item:nth-child(2){margin-left:16px;}
  .ladder-item:nth-child(3){margin-left:32px;}
  .ladder-item:nth-child(4){margin-left:48px;}
}
@media (max-width:767px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom));}
  .tabbar{display:block;}
  .container,.header-inner{padding:0 16px;}
  .section{padding:56px 0;}
  .section--tight{padding:44px 0;}
  .hero{padding:32px 0 48px;}
  .hero-cta{gap:10px;}
  .hero-cta .btn{width:100%;}
  .hero-points span{font-size:12px;padding:6px 11px;}
  .ladder{padding-left:24px;}
  .ladder::before{left:6px;}
  .ladder-dot{left:-26px;top:24px;}
  .ladder-item:nth-child(2),
  .ladder-item:nth-child(3),
  .ladder-item:nth-child(4){margin-left:0;}
  .faq-a{padding:0 18px 18px 18px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-band{padding:26px 20px;}
  .cta-actions{min-width:0;}
}
@media (max-width:480px){
  h1{font-size:26px;}
  .stat-strip{grid-template-columns:1fr;gap:12px;}
  .stat-item{display:flex;align-items:center;justify-content:space-between;text-align:left;}
  .login-card{padding:20px;}
  .btn{height:46px;padding:0 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --bg-900:#060A14;
  --bg-800:#0A1123;
  --bg-700:rgba(16,26,48,.62);
  --brand:#16E0B8;
  --brand-deep:#0BA88A;
  --accent:#FF7A3D;
  --tech:#5B7CFF;
  --text:#E9EFF9;
  --text-2:#A6B3CB;
  --text-3:#6C7C99;
  --line:rgba(122,158,214,.14);
  --line-strong:rgba(122,158,214,.28);
  --success:#2FD48A;
  --warn:#FFB13D;
  --danger:#FF5F6D;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-card:0 8px 28px rgba(2,8,20,.55);
  --shadow-brand:0 0 22px rgba(22,224,184,.35),0 10px 34px rgba(22,224,184,.18);
  --max:1200px;
  --gap:24px;
  --section-y:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-900);
  background-image:
    radial-gradient(680px 480px at 8% 4%,rgba(22,224,184,.16),transparent 62%),
    radial-gradient(720px 520px at 96% 88%,rgba(91,124,255,.16),transparent 64%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:#5CF3D4;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);}
h1{font-size:clamp(28px,5vw,46px);line-height:1.2;}
h2{font-size:clamp(22px,3.4vw,34px);line-height:1.3;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px;}
.mono{font-family:ui-monospace,"JetBrains Mono",Consolas,monospace;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.94);
  border-bottom-color:var(--line);
  box-shadow:0 8px 28px rgba(2,8,20,.5);
}
.header-inner{
  max-width:var(--max);margin:0 auto;padding:0 20px;
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);}
.logo:hover{color:var(--text);}
.logo-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(22,224,184,.22),rgba(91,124,255,.22));
  border:1px solid rgba(22,224,184,.42);
  color:var(--brand);font-size:16px;
  box-shadow:0 0 18px rgba(22,224,184,.22);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{font-size:16px;font-weight:700;}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em;}
.main-nav ul{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:10px;
  color:var(--text-2);font-size:15px;
}
.main-nav a:hover{color:var(--text);background:rgba(122,158,214,.08);}
.main-nav a.is-active{color:var(--brand);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(22,224,184,.6);
}
.header-actions{display:flex;align-items:center;gap:14px;}
.header-link{font-size:14px;color:var(--text-2);}
.header-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:rgba(122,158,214,.08);border:1px solid var(--line);
  color:var(--text);font-size:17px;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--radius-pill);
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04140F;
  box-shadow:0 0 22px rgba(22,224,184,.35),0 10px 34px rgba(22,224,184,.18);
  border-color:rgba(22,224,184,.55);
}
.btn-primary:hover{color:#04140F;transform:translateY(-1px);box-shadow:0 0 30px rgba(22,224,184,.5),0 14px 40px rgba(22,224,184,.24);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(122,158,214,.06);
  color:var(--text);border-color:var(--line-strong);
}
.btn-ghost:hover{color:var(--brand);border-color:rgba(22,224,184,.5);background:rgba(22,224,184,.08);transform:translateY(-1px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:72px 0 0 0;z-index:55;
  background:rgba(6,10,20,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  padding:22px 20px 120px;
  transform:translateY(-110%);opacity:0;visibility:hidden;
  transition:transform .3s ease,opacity .3s ease,visibility .3s ease;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.mobile-drawer h4{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.06em;margin-bottom:12px;}
.drawer-list li + li{margin-top:10px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 18px;border-radius:var(--radius-md);
  background:var(--bg-700);border:1px solid var(--line);
  color:var(--text);font-size:15px;
}
.drawer-list a:hover,.drawer-list a.is-active{border-color:rgba(22,224,184,.45);color:var(--brand);}
.drawer-cta{margin-top:22px;}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";color:var(--line-strong);}
.breadcrumb li:last-child::after{display:none;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--brand);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;margin-top:20px;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  padding:56px 48px;
  background-image:linear-gradient(100deg,rgba(6,10,20,.92) 8%,rgba(6,10,20,.7) 52%,rgba(6,10,20,.55) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(233,239,249,.05) 0 1px,transparent 1px 14px);
  opacity:.6;pointer-events:none;
}
.page-hero-inner{position:relative;max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(22,224,184,.12);border:1px solid rgba(22,224,184,.35);
  color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}
.page-hero h1{margin-bottom:16px;}
.page-hero .lead{font-size:17px;color:var(--text-2);max-width:640px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;
}
.fact-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--radius-pill);
  background:rgba(16,26,48,.72);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.fact-chip i{color:var(--brand);font-size:12px;}

/* ---------- sections ---------- */
.section{padding:var(--section-y) 0 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head .kicker{
  display:block;font-size:12px;font-weight:600;letter-spacing:.14em;
  color:var(--accent);margin-bottom:12px;
}
.section-head h2{margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;margin:0;}

/* ---------- glass card ---------- */
.glass-card{
  background:var(--bg-700);
  border:1px solid rgba(122,158,214,.16);
  border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.glass-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);}
.card-pad{padding:28px;}

/* ---------- steps layout ---------- */
.steps-layout{
  display:grid;grid-template-columns:1.35fr .9fr;gap:var(--gap);
  align-items:start;
}
.step-axis{
  position:relative;padding:8px 0 8px 0;
}
.step-item{
  position:relative;display:flex;gap:20px;
  padding-bottom:26px;
}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:19px;top:44px;bottom:-2px;width:2px;
  background:linear-gradient(180deg,rgba(22,224,184,.55),rgba(22,224,184,.08));
}
.step-item:last-child::before{display:none;}
.step-dot{
  position:relative;z-index:1;
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,184,.12);border:1px solid rgba(22,224,184,.5);
  color:var(--brand);font-size:14px;font-weight:600;
  box-shadow:0 0 18px rgba(22,224,184,.25);
  font-family:ui-monospace,"JetBrains Mono",Consolas,monospace;
}
.step-body{
  flex:1;background:var(--bg-700);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:20px 22px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .2s ease,transform .2s ease;
}
.step-body:hover{border-color:rgba(22,224,184,.35);transform:translateY(-2px);}
.step-body h3{font-size:17px;margin-bottom:8px;}
.step-body p{margin:0;font-size:15px;color:var(--text-2);}
.step-tips{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:rgba(91,124,255,.14);border:1px solid rgba(91,124,255,.32);color:#A9BCFF;
}
.tag-brand{background:rgba(22,224,184,.12);border-color:rgba(22,224,184,.34);color:var(--brand);}
.tag-accent{background:rgba(255,122,61,.13);border-color:rgba(255,122,61,.34);color:#FFA97A;}

/* ---------- side notes ---------- */
.side-stack{display:flex;flex-direction:column;gap:var(--gap);position:sticky;top:96px;}
.note-media{position:relative;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);}
.note-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.note-media figcaption{font-size:13px;color:var(--text-3);padding:12px 4px 0;}
.info-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text-2);
}
.info-list li:last-child{border-bottom:0;padding-bottom:0;}
.info-list i{color:var(--brand);margin-top:7px;font-size:13px;flex:0 0 14px;}
.hint-bar{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:var(--radius-sm);
  background:rgba(255,177,61,.1);border:1px solid rgba(255,177,61,.3);
  font-size:14px;color:#FFD7A0;
}
.hint-bar i{margin-top:6px;color:var(--warn);}
.side-stack h3{font-size:17px;margin-bottom:14px;}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.check-card{background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;transition:border-color .2s ease,transform .2s ease;}
.check-card:hover{border-color:rgba(22,224,184,.35);transform:translateY(-2px);}
.check-card .ico{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(22,224,184,.12);border:1px solid rgba(22,224,184,.32);color:var(--brand);
  margin-bottom:14px;font-size:15px;
}
.check-card h3{font-size:16px;margin-bottom:8px;}
.check-card p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- compare rows ---------- */
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.compare-card{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;position:relative;transition:transform .2s ease,border-color .2s ease;
}
.compare-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);}
.compare-card .mark{
  position:absolute;top:20px;right:20px;width:9px;height:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 14px rgba(255,122,61,.7);
}
.compare-card .mono{font-size:13px;color:var(--text-3);letter-spacing:.08em;}
.compare-card h3{margin:10px 0 10px;font-size:18px;}
.compare-card p{font-size:14px;color:var(--text-2);margin:0 0 14px;}
.compare-card ul li{display:flex;gap:10px;font-size:14px;color:var(--text-2);padding:6px 0;}
.compare-card ul i{color:var(--success);margin-top:6px;font-size:12px;}

/* ---------- faq ---------- */
.faq-list{max-width:880px;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-md);
  background:var(--bg-700);margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-item[open]{border-color:rgba(22,224,184,.4);}
.faq-item summary{
  display:flex;align-items:center;gap:16px;
  min-height:60px;padding:16px 22px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .num{
  font-family:ui-monospace,"JetBrains Mono",Consolas,monospace;
  font-size:14px;color:var(--brand);flex:0 0 auto;
}
.faq-item summary .txt{flex:1;}
.faq-item summary .sign{
  flex:0 0 22px;width:22px;height:22px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--brand);font-size:11px;
  transition:transform .2s ease;
}
.faq-item[open] summary .sign{transform:rotate(180deg);}
.faq-item .faq-body{padding:0 22px 20px 62px;font-size:15px;color:var(--text-2);}
.faq-item .faq-body p:last-child{margin-bottom:0;}

/* ---------- cta band ---------- */
.cta-band{
  margin-top:var(--section-y);
  border:1px solid rgba(22,224,184,.3);
  border-radius:22px;
  padding:48px;
  background:
    radial-gradient(520px 300px at 12% 10%,rgba(22,224,184,.18),transparent 60%),
    radial-gradient(520px 320px at 92% 90%,rgba(91,124,255,.18),transparent 62%),
    rgba(10,17,35,.86);
  box-shadow:var(--shadow-card);
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{color:var(--text-2);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.assure{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.assure span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-2);
  padding:8px 15px;border-radius:var(--radius-pill);
  background:rgba(16,26,48,.66);border:1px solid var(--line);
}
.assure i{color:var(--success);font-size:12px;}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.related-card{
  display:flex;flex-direction:column;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;text-decoration:none;color:var(--text);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.4);color:var(--text);box-shadow:0 12px 32px rgba(2,8,20,.6);}
.related-card .thumb{position:relative;overflow:hidden;}
.related-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease;}
.related-card:hover .thumb img{transform:scale(1.04);}
.related-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.05),rgba(6,10,20,.6));
}
.related-card .body{padding:20px 22px 24px;flex:1;display:flex;flex-direction:column;}
.related-card h3{font-size:18px;margin-bottom:10px;}
.related-card:hover h3{color:var(--brand);}
.related-card p{font-size:14px;color:var(--text-2);margin:0 0 16px;flex:1;}
.related-card .more{font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:8px;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:var(--section-y);
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding-top:56px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:340px;margin:0;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- mobile tabbar ---------- */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(8,13,26,.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.mobile-tabbar ul{display:flex;align-items:stretch;}
.mobile-tabbar li{flex:1;}
.mobile-tabbar a{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:5px;
  padding:6px 2px 4px;border-radius:12px;
  font-size:11px;color:var(--text-3);
}
.mobile-tabbar a i{font-size:18px;}
.mobile-tabbar a.is-active{color:var(--brand);}
.mobile-tabbar a.is-active::before{
  content:"";position:absolute;top:-9px;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--brand);
  box-shadow:0 0 10px rgba(22,224,184,.8);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--gap:20px;}
}
@media (max-width:1023px){
  :root{--section-y:64px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-link{display:none;}
  .steps-layout{grid-template-columns:1fr;}
  .side-stack{position:static;}
  .check-grid{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-hero{padding:42px 30px;}
  .cta-band{padding:36px 28px;}
}
@media (max-width:767px){
  :root{--section-y:56px;}
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom));}
  .container{padding:0 16px;}
  .header-inner{padding:0 16px;}
  .logo-sub{display:none;}
  .mobile-tabbar{display:block;}
  .page-hero{padding:32px 20px;border-radius:18px;}
  .page-hero .lead{font-size:15px;}
  .hero-actions .btn{flex:1 1 auto;}
  .check-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-item .faq-body{padding:0 18px 18px 18px;}
  .faq-item summary{padding:14px 18px;gap:12px;font-size:15px;}
  .cta-band{padding:28px 20px;}
  .card-pad{padding:20px;}
  .step-body{padding:16px 18px;}
}
@media (max-width:480px){
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --bg-900:#060A14;
  --bg-800:#0A1123;
  --bg-700:rgba(16,26,48,.62);
  --brand:#16E0B8;
  --brand-deep:#0BA88A;
  --accent:#FF7A3D;
  --tech:#5B7CFF;
  --text:#E9EFF9;
  --text-2:#A6B3CB;
  --text-3:#6C7C99;
  --line:rgba(122,158,214,.14);
  --line-strong:rgba(122,158,214,.24);
  --success:#2FD48A;
  --warn:#FFB13D;
  --danger:#FF5F6D;
  --radius:18px;
  --radius-sm:14px;
  --radius-xs:12px;
  --shadow:0 8px 28px rgba(2,8,20,.55);
  --shadow-soft:0 4px 16px rgba(2,8,20,.38);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg-900);
  min-height:100vh;
  overflow-x:hidden;
  padding-bottom:0;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(720px 520px at 8% -6%,rgba(22,224,184,.16),transparent 62%),
    radial-gradient(680px 520px at 100% 100%,rgba(91,124,255,.14),transparent 64%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
ul,ol{padding-left:1.25em}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:0}
p{margin:0 0 18px}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(6,10,20,.94);border-bottom-color:var(--line);box-shadow:0 10px 30px rgba(2,8,20,.5)}
.header-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(22,224,184,.28),rgba(91,124,255,.22));
  border:1px solid var(--line-strong);
  color:var(--brand);
  font-size:16px;
  box-shadow:0 0 20px rgba(22,224,184,.18);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-name{font-size:16px;font-weight:700;color:var(--text)}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.04em}
.main-nav{margin-left:auto}
.main-nav ul{list-style:none;display:flex;align-items:center;gap:6px;margin:0;padding:0}
.main-nav a{
  display:inline-block;
  padding:9px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:10px;
  position:relative;
}
.main-nav a:hover{color:var(--text);background:rgba(122,158,214,.08)}
.main-nav a.is-active{color:var(--brand)}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 10px rgba(22,224,184,.7);
}
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.header-link{font-size:14px;color:var(--text-2)}
.header-link:hover{color:var(--brand)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);
  color:var(--text);font-size:16px;
  background:rgba(16,26,48,.6);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  padding:12px 26px;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  color:#03221B;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  border:1px solid rgba(22,224,184,.6);
  box-shadow:0 0 22px rgba(22,224,184,.35),0 10px 34px rgba(22,224,184,.18);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 30px rgba(22,224,184,.5),0 14px 40px rgba(22,224,184,.24)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  color:var(--text);
  border:1px solid var(--line-strong);
  background:var(--bg-700);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:rgba(22,224,184,.45);color:var(--brand);transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 文章页头部 ---------- */
.article-hero{
  position:relative;
  padding:44px 0 30px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(122,158,214,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(122,158,214,.06) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(circle at 30% 0%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 30% 0%,#000,transparent 72%);
  opacity:.6;
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--text-3);opacity:.6}
.breadcrumb .current{
  color:var(--text-2);
  max-width:280px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-title{
  font-size:clamp(26px,4.2vw,42px);
  line-height:1.28;
  font-weight:700;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:20px;
  font-size:14px;color:var(--text-3);
}
.article-meta .meta-num{font-family:var(--mono);color:var(--text-2)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 12px;border-radius:999px;
  border:1px solid rgba(22,224,184,.32);
  color:var(--brand);
  background:rgba(22,224,184,.08);
}
.badge-accent{border-color:rgba(255,122,61,.36);color:var(--accent);background:rgba(255,122,61,.1)}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 264px;
  gap:44px;
  align-items:start;
  padding:52px 0 72px;
}
.article-main{max-width:820px;min-width:0}
.article-body{
  font-size:16px;
  line-height:1.85;
  color:#D8E2F2;
}
.article-body > * + *{margin-top:18px}
.article-body h2{
  font-size:clamp(21px,2.6vw,27px);
  line-height:1.4;
  color:var(--text);
  padding-left:14px;
  border-left:3px solid var(--brand);
  margin:38px 0 14px;
  scroll-margin-top:100px;
}
.article-body h3{
  font-size:19px;
  line-height:1.5;
  color:var(--text);
  padding-left:12px;
  border-left:2px solid rgba(22,224,184,.55);
  margin:28px 0 12px;
  scroll-margin-top:100px;
}
.article-body p{margin:0 0 18px}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(22,224,184,.35)}
.article-body a:hover{color:var(--accent);border-bottom-color:rgba(255,122,61,.5)}
.article-body strong{color:#FFFFFF}
.article-body ul,.article-body ol{padding-left:1.3em;margin:0 0 18px}
.article-body li{margin-bottom:8px;line-height:1.8}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:22px 0;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  background:rgba(22,224,184,.06);
  border-radius:0 14px 14px 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:14px;
  margin:22px auto;
  box-shadow:var(--shadow-soft);
}
.article-body figure{margin:24px 0}
.article-body figcaption{
  text-align:center;font-size:14px;color:var(--text-3);margin-top:10px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:22px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 14px;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:middle;
}
.article-body th{background:rgba(16,26,48,.7);color:var(--text);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body code{
  font-family:var(--mono);font-size:14px;
  background:rgba(91,124,255,.14);
  border:1px solid var(--line);
  padding:2px 6px;border-radius:6px;color:#BBD3FF;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}

/* ---------- 侧栏目录 ---------- */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.aside-card{
  background:var(--bg-700);
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  padding:20px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.aside-card h4{font-size:14px;color:var(--text);letter-spacing:.04em;margin-bottom:12px}
#tocList{list-style:none;margin:0;padding:0;font-size:14px}
#tocList li{margin-bottom:4px}
#tocList a{
  display:block;padding:7px 10px;border-radius:10px;color:var(--text-2);
  border-left:2px solid transparent;
  line-height:1.5;
}
#tocList a:hover{color:var(--text);background:rgba(122,158,214,.08)}
#tocList a.lv3{padding-left:22px;font-size:13px;color:var(--text-3)}
#tocList a.is-current{
  color:var(--brand);
  border-left-color:var(--brand);
  background:rgba(22,224,184,.08);
}
.aside-note{font-size:13px;color:var(--text-3);line-height:1.7}
.aside-note strong{color:var(--text-2);display:block;margin-bottom:6px;font-weight:600}

/* ---------- 标签 ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:4px}
.tag{
  font-size:13px;padding:6px 14px;border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--text-2);
  background:rgba(16,26,48,.5);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.tag:hover{color:var(--brand);border-color:rgba(22,224,184,.45);transform:translateY(-1px)}

/* ---------- 空态 ---------- */
.article-empty{
  border:1px dashed var(--line-strong);
  border-radius:var(--radius);
  background:var(--bg-700);
  padding:48px 28px;
  text-align:center;
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
}
.article-empty i{font-size:30px;color:var(--brand);opacity:.8}
.article-empty h2{font-size:22px;color:var(--text);border:0;padding:0;margin:0}
.article-empty p{color:var(--text-2);margin:0 0 6px}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:clamp(20px,2.6vw,28px);line-height:1.35}
.section-head .section-desc{font-size:14.5px;color:var(--text-3);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.related-card{
  background:var(--bg-700);
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  overflow:hidden;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease;
  display:flex;flex-direction:column;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35)}
.related-card .thumb{aspect-ratio:16/10;overflow:hidden;background:rgba(10,17,35,.9)}
.related-card .thumb img{width:100%;height:100%;object-fit:cover}
.related-card .body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-card h3{font-size:17px;line-height:1.55}
.related-card:hover h3{color:var(--brand)}
.related-card p{font-size:14.5px;color:var(--text-2);margin:0}
.related-card .more{margin-top:auto;font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}

/* ---------- 返回 ---------- */
.back-row{display:flex;justify-content:center;padding:0 0 72px}

/* ---------- CTA 带 ---------- */
.cta-band{
  margin:0 0 88px;
  border:1px solid var(--line-strong);
  border-radius:24px;
  padding:40px;
  background:
    radial-gradient(600px 260px at 12% 0%,rgba(22,224,184,.16),transparent 68%),
    radial-gradient(520px 260px at 92% 100%,rgba(91,124,255,.16),transparent 70%),
    var(--bg-800);
  box-shadow:var(--shadow);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:clamp(20px,2.8vw,30px);line-height:1.35;margin-bottom:8px}
.cta-band p{color:var(--text-2);font-size:15px;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:16px;font-size:13.5px;color:var(--text-3)}
.cta-points span{display:inline-flex;align-items:center;gap:6px}
.cta-points i{color:var(--success)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:56px 0 26px;
  position:relative;z-index:1;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:340px;line-height:1.8}
.footer-col h4{font-size:14px;color:var(--text);letter-spacing:.04em;margin-bottom:14px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;
  background:rgba(8,13,26,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr)}
.mobile-tabbar a{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:9px 4px 10px;font-size:11px;color:var(--text-3);
  position:relative;
}
.mobile-tabbar i{font-size:19px}
.mobile-tabbar a.is-active{color:var(--brand)}
.mobile-tabbar a.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--brand);
  box-shadow:0 0 10px rgba(22,224,184,.8);
}
.tabbar-note{display:none}

/* ---------- 抽屉 ---------- */
@media (max-width:1023px){
  .main-nav{
    position:fixed;inset:72px 0 auto 0;
    background:rgba(6,10,20,.97);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
    padding:14px 20px 22px;
    transform:translateY(-12px);
    opacity:0;visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
    margin-left:0;
  }
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px}
  .main-nav a{padding:13px 12px;font-size:15.5px;border-radius:12px}
  .main-nav a.is-active{background:rgba(22,224,184,.1)}
  .main-nav a.is-active::after{display:none}
  .site-header.nav-open .main-nav{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-toggle{display:grid;place-items:center}
  .header-link{display:none}
}

@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:40px 0 60px}
  .article-aside{position:static}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .container{padding:0 18px}
  .header-inner{padding:0 18px}
}

@media (max-width:767px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .article-hero{padding:30px 0 22px}
  .article-meta{gap:8px 14px;font-size:13px}
  .related-grid{grid-template-columns:1fr}
  .related{padding-bottom:64px}
  .cta-band{margin-bottom:64px;padding:26px;border-radius:20px}
  .cta-band h2{font-size:20px}
  .mobile-tabbar{display:block}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .site-footer{padding:44px 0 22px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-body table thead,.article-body table tbody,.article-body table tr{display:table;width:100%}
}

@media (max-width:520px){
  .container{padding:0 16px}
  .header-inner{padding:0 16px;gap:12px}
  .logo-name{font-size:14.5px}
  .logo-sub{display:none}
  .article-title{font-size:23px}
  .aside-card{padding:16px}
  .btn{padding:11px 20px;font-size:14.5px}
  .cta-actions .btn{width:100%}
  .related-card .body{padding:16px}
}

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

/* roulang page: category2 */
:root{
  --bg-900:#060A14;
  --bg-800:#0A1123;
  --bg-700:rgba(16,26,48,.62);
  --brand:#16E0B8;
  --brand-deep:#0BA88A;
  --accent:#FF7A3D;
  --tech:#5B7CFF;
  --text:#E9EFF9;
  --text-2:#A6B3CB;
  --text-3:#6C7C99;
  --line:rgba(122,158,214,.14);
  --line-strong:rgba(122,158,214,.26);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow:0 8px 28px rgba(2,8,20,.55);
  --glow-near:0 0 22px rgba(22,224,184,.35);
  --glow-far:0 10px 34px rgba(22,224,184,.18);
  --success:#2FD48A;
  --warn:#FFB13D;
  --danger:#FF5F6D;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --mono:ui-monospace,"JetBrains Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-900);
  background-image:
    radial-gradient(720px 520px at 8% -6%, rgba(22,224,184,.16), transparent 62%),
    radial-gradient(820px 620px at 102% 108%, rgba(91,124,255,.14), transparent 62%);
  background-attachment:fixed;
  min-height:100vh;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(122,158,214,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,158,214,.045) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,0) 55%);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:0;}
p{margin:0;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.mono{font-family:var(--mono);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:16px;line-height:1;
  padding:15px 28px;transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 100%);
  color:#04140F;
  box-shadow:var(--glow-near),var(--glow-far);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 28px rgba(22,224,184,.5),0 14px 40px rgba(22,224,184,.22);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(16,26,48,.5);color:var(--text);border-color:var(--line-strong);
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{border-color:rgba(22,224,184,.5);color:var(--brand);transform:translateY(-1px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;line-height:1;letter-spacing:.04em;
  padding:7px 12px;border-radius:999px;
  background:rgba(22,224,184,.12);color:var(--brand);
  border:1px solid rgba(22,224,184,.28);
}
.badge-accent{background:rgba(255,122,61,.12);color:var(--accent);border-color:rgba(255,122,61,.3);}
.badge-muted{background:rgba(122,158,214,.1);color:var(--text-2);border-color:var(--line);}

/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,10,20,.72);
  border-bottom:1px solid transparent;
  backdrop-filter:blur(14px);
  transition:background .25s ease, border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(6,10,20,.92);border-bottom-color:var(--line);}
.header-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(22,224,184,.22),rgba(91,124,255,.18));
  border:1px solid rgba(22,224,184,.4);
  color:var(--brand);font-size:17px;
  box-shadow:0 0 18px rgba(22,224,184,.25);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{font-size:16px;font-weight:700;}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.02em;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  display:inline-block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);position:relative;transition:color .2s ease, background .2s ease;
}
.main-nav a:hover{color:var(--text);background:rgba(122,158,214,.08);}
.main-nav a.is-active{color:var(--brand);font-weight:600;}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:999px;
  background:var(--brand);box-shadow:0 0 12px rgba(22,224,184,.7);
}
.header-actions{display:flex;align-items:center;gap:14px;}
.header-link{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.header-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line-strong);color:var(--text);font-size:18px;
  align-items:center;justify-content:center;background:rgba(16,26,48,.5);
}
.nav-drawer{
  display:none;position:fixed;inset:72px 0 0 0;z-index:55;
  background:rgba(6,10,20,.94);backdrop-filter:blur(16px);
  padding:24px 20px 40px;overflow-y:auto;
}
.nav-drawer.is-open{display:block;}
.nav-drawer ul{display:flex;flex-direction:column;gap:6px;margin-bottom:22px;}
.nav-drawer a{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 16px;border-radius:14px;font-size:16px;color:var(--text-2);
  background:rgba(16,26,48,.5);border:1px solid var(--line);
}
.nav-drawer a.is-active{color:var(--brand);border-color:rgba(22,224,184,.4);}

/* ============ 面包屑 ============ */
.breadcrumb{
  padding:22px 0 0;
  font-size:14px;color:var(--text-3);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb a{color:var(--text-2);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb li::after{content:"/";margin-left:8px;color:var(--text-3);}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb li[aria-current]{color:var(--brand);}

/* ============ 页面横幅 ============ */
.page-hero{
  position:relative;margin-top:22px;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  background-image:linear-gradient(115deg, rgba(6,10,20,.94) 12%, rgba(6,10,20,.72) 60%, rgba(6,10,20,.9) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.page-hero-inner{padding:56px 44px 52px;max-width:820px;}
.page-hero h1{font-size:clamp(28px,5vw,46px);line-height:1.2;margin:16px 0 18px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.page-hero p.lead{font-size:17px;color:var(--text-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);}
.hero-fact{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);}
.hero-fact i{color:var(--brand);font-size:15px;}

/* ============ 通用板块 ============ */
.section{padding:88px 0 0;}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head .eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);
  text-transform:uppercase;margin-bottom:12px;display:block;
}
.section-head h2{font-size:clamp(22px,3.4vw,34px);margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}

/* ============ 设备矩阵 ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.device-card{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  display:flex;flex-direction:column;gap:12px;
}
.device-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);box-shadow:0 14px 36px rgba(2,8,20,.62);}
.device-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(22,224,184,.16),rgba(91,124,255,.14));
  border:1px solid rgba(22,224,184,.28);color:var(--brand);font-size:19px;
}
.device-card h3{font-size:20px;font-weight:600;}
.device-card p{font-size:15px;color:var(--text-2);line-height:1.75;}
.device-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px;}

/* ============ 规格参数 ============ */
.spec-wrap{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-lg);
  backdrop-filter:blur(14px);box-shadow:var(--shadow);overflow:hidden;
}
.spec-head{
  padding:18px 26px;display:flex;justify-content:space-between;align-items:center;gap:12px;
  background:rgba(122,158,214,.08);border-bottom:1px solid var(--line);
  font-size:14px;color:var(--text-2);
}
.spec-head strong{color:var(--text);font-size:15px;}
.spec-row{
  display:grid;grid-template-columns:220px 1fr;gap:20px;padding:18px 26px;
  border-bottom:1px solid var(--line);
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{color:var(--text-3);font-size:14px;}
.spec-row dd{margin:0;color:var(--text);font-size:15px;}
.spec-row dd .mono{color:var(--brand);font-size:14px;}

/* ============ 对比要点 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.compare-card{
  position:relative;overflow:hidden;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s ease, border-color .2s ease;
}
.compare-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);}
.compare-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;
  background:radial-gradient(circle, rgba(22,224,184,.16), transparent 68%);
}
.compare-card .num{
  font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.08em;
}
.compare-card h3{font-size:19px;margin:12px 0 10px;}
.compare-card p{font-size:15px;color:var(--text-2);}

/* ============ 换设备流程 ============ */
.step-track{position:relative;padding-left:34px;}
.step-track::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--brand),rgba(22,224,184,.06));
  box-shadow:0 0 12px rgba(22,224,184,.4);
}
.step-item{position:relative;padding:0 0 30px 8px;}
.step-item:last-child{padding-bottom:0;}
.step-item::before{
  content:"";position:absolute;left:-33px;top:8px;width:14px;height:14px;border-radius:50%;
  background:var(--bg-900);border:2px solid var(--brand);box-shadow:0 0 14px rgba(22,224,184,.6);
}
.step-item h3{font-size:18px;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
.step-item h3 span{font-family:var(--mono);font-size:13px;color:var(--text-3);}
.step-item p{color:var(--text-2);font-size:15px;}
.step-note{
  display:flex;gap:12px;align-items:flex-start;margin-top:14px;
  padding:14px 18px;border-radius:var(--radius-md);
  background:rgba(255,177,61,.08);border:1px solid rgba(255,177,61,.24);
  font-size:14px;color:var(--text-2);
}
.step-note i{color:var(--warn);margin-top:5px;}

/* ============ 图文区 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;}
.split-media{
  border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);aspect-ratio:16/10;background:rgba(16,26,48,.6);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split-text h2{font-size:clamp(22px,3.2vw,32px);margin-bottom:18px;}
.split-text p{color:var(--text-2);margin-bottom:16px;}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:20px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.check-list i{color:var(--brand);margin-top:5px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-md);
  backdrop-filter:blur(12px);overflow:hidden;transition:border-color .2s ease;
}
.faq-item[open]{border-color:rgba(22,224,184,.35);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:19px 22px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .idx{font-family:var(--mono);font-size:13px;color:var(--brand);}
.faq-item summary .chev{margin-left:auto;color:var(--text-3);transition:transform .2s ease;font-size:14px;}
.faq-item[open] summary .chev{transform:rotate(45deg);color:var(--brand);}
.faq-body{padding:0 22px 22px 58px;color:var(--text-2);font-size:15px;}
.faq-body p+p{margin-top:10px;}

/* ============ CTA 带 ============ */
.cta-band{
  margin-top:88px;border-radius:22px;position:relative;overflow:hidden;
  border:1px solid rgba(22,224,184,.28);
  background:linear-gradient(120deg, rgba(16,26,48,.86), rgba(11,168,138,.16));
  box-shadow:var(--shadow);backdrop-filter:blur(14px);
}
.cta-band-inner{padding:44px;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;}
.cta-band h2{font-size:clamp(22px,3.2vw,30px);margin-bottom:12px;}
.cta-band p{color:var(--text-2);max-width:560px;}
.cta-points{display:flex;flex-wrap:wrap;gap:20px;margin-top:18px;}
.cta-points span{font-size:14px;color:var(--text-2);display:flex;align-items:center;gap:8px;}
.cta-points i{color:var(--brand);}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.related-card{
  display:flex;gap:18px;align-items:center;
  background:var(--bg-700);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:22px;backdrop-filter:blur(14px);box-shadow:var(--shadow);
  transition:transform .2s ease, border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);}
.related-card .related-icon{
  width:48px;height:48px;flex-shrink:0;border-radius:14px;display:grid;place-items:center;
  background:rgba(22,224,184,.12);border:1px solid rgba(22,224,184,.3);color:var(--brand);font-size:18px;
}
.related-card h3{font-size:18px;margin-bottom:6px;}
.related-card p{font-size:14px;color:var(--text-2);}
.related-card .go{margin-left:auto;color:var(--text-3);}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;background:var(--bg-800);border-top:1px solid var(--line);
  position:relative;z-index:1;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
  padding:60px 0 40px;
}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:18px;max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s ease;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:22px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ============ 移动底部 Tab ============ */
.tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(10,17,35,.94);backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
}
.tabbar ul{display:grid;grid-template-columns:repeat(4,1fr);}
.tabbar a{
  display:flex;flex-direction:column;align-items:center;gap:5px;
  font-size:11px;color:var(--text-3);padding:6px 0;position:relative;
}
.tabbar a i{font-size:18px;}
.tabbar a.is-active{color:var(--brand);}
.tabbar a.is-active::before{
  content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:999px;background:var(--brand);
  box-shadow:0 0 12px rgba(22,224,184,.8);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .section{padding-top:64px;}
  .device-grid{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .page-hero-inner{padding:44px 30px 42px;}
}
@media (max-width:767px){
  body{padding-bottom:76px;}
  .container{padding:0 16px;}
  .header-inner{padding:0 16px;}
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-actions .header-link{display:none;}
  .tabbar{display:block;}
  .section{padding-top:56px;}
  .device-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:24px;}
  .cta-band{margin-top:56px;}
  .cta-band-inner{padding:28px 22px;}
  .page-hero-inner{padding:34px 20px 32px;}
  .spec-row{grid-template-columns:1fr;gap:6px;padding:16px 18px;}
  .spec-head{padding:16px 18px;}
  .faq-body{padding:0 18px 20px 18px;}
  .footer-grid{grid-template-columns:1fr;padding:44px 0 30px;}
  .footer-bottom{flex-direction:column;}
  .hero-facts{gap:14px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .device-card{padding:20px;}
  .compare-card{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
}

/* roulang page: category3 */
:root{
  --bg-900:#060A14;
  --bg-800:#0A1123;
  --bg-700:rgba(16,26,48,.62);
  --brand:#16E0B8;
  --brand-deep:#0BA88A;
  --accent:#FF7A3D;
  --tech:#5B7CFF;
  --text:#E9EFF9;
  --text-2:#A6B3CB;
  --text-3:#6C7C99;
  --line:rgba(122,158,214,.14);
  --line-strong:rgba(122,158,214,.28);
  --success:#2FD48A;
  --warn:#FFB13D;
  --danger:#FF5F6D;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:12px;
  --shadow-card:0 8px 28px rgba(2,8,20,.55);
  --glow-near:0 0 22px rgba(22,224,184,.35);
  --glow-far:0 10px 34px rgba(22,224,184,.18);
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono",Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--bg-900);
  background-image:
    radial-gradient(920px 620px at 6% -8%, rgba(22,224,184,.13), transparent 62%),
    radial-gradient(900px 640px at 104% 10%, rgba(91,124,255,.13), transparent 60%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:clamp(28px,5vw,46px);line-height:1.2;font-weight:700;}
h2{font-size:clamp(22px,3.4vw,34px);line-height:1.3;font-weight:700;}
h3{font-size:20px;line-height:1.5;font-weight:600;}
p{color:var(--text-2);}

.container{max-width:var(--container);margin:0 auto;padding:0 20px;}
.section{padding:88px 0;position:relative;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);
  padding:5px 12px;border-radius:999px;
  background:rgba(22,224,184,.1);
  border:1px solid rgba(22,224,184,.28);
  margin-bottom:14px;
}
.section-title{margin-bottom:12px;}
.section-desc{font-size:16px;line-height:1.85;color:var(--text-2);}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(6,10,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(6,10,20,.94);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(2,8,20,.6);
}
.header-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
  height:72px;
  display:flex;
  align-items:center;
  gap:22px;
}
.logo{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  color:#04120F;font-size:17px;
  box-shadow:var(--glow-near);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-name{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.logo-sub{font-size:11px;color:var(--text-3);letter-spacing:.04em;}
.main-nav{margin-left:auto;}
.main-nav ul{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:9px 12px;
  font-size:15px;
  color:var(--text-2);
  border-radius:10px;
}
.main-nav a:hover{color:var(--text);background:rgba(122,158,214,.08);}
.main-nav a.is-active{color:var(--brand);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(22,224,184,.7);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.header-link{font-size:14px;color:var(--text-2);}
.header-link:hover{color:var(--brand);}
.nav-toggle{
  display:none;
  width:42px;height:42px;border-radius:12px;
  background:rgba(122,158,214,.1);
  border:1px solid var(--line);
  color:var(--text);
  cursor:pointer;
}
.nav-toggle:hover{border-color:rgba(22,224,184,.4);color:var(--brand);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04120F;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.18),var(--glow-near),var(--glow-far);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.25),0 0 30px rgba(22,224,184,.5),0 14px 40px rgba(22,224,184,.24);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(122,158,214,.08);
  border-color:var(--line-strong);
  color:var(--text);
}
.btn-ghost:hover{border-color:rgba(22,224,184,.45);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}

/* 面包屑 */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .current{color:var(--text-2);}

/* 页面横幅 */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.3;
}
.page-hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,20,.6) 0%,rgba(6,10,20,.9) 62%,var(--bg-900) 100%);
}
.page-hero-inner{position:relative;z-index:1;padding:42px 0 56px;}
.page-hero h1{max-width:820px;margin:18px 0 16px;}
.page-hero h1 .hl{color:var(--brand);}
.page-hero .lead{max-width:720px;font-size:16px;line-height:1.9;color:var(--text-2);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;
}
.fact-chip{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 16px;border-radius:999px;
  background:var(--bg-700);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  font-size:13px;color:var(--text-2);
}
.fact-chip i{color:var(--brand);font-size:13px;}
.fact-chip b{font-family:var(--font-mono);color:var(--text);font-weight:600;}

/* 问答布局 */
.faq-layout{display:grid;grid-template-columns:262px 1fr;gap:36px;align-items:start;}
.anchor-nav{
  position:sticky;top:96px;
  padding:22px;
  border-radius:var(--radius-lg);
  background:var(--bg-700);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.anchor-nav h3{font-size:15px;color:var(--text);margin-bottom:6px;}
.anchor-nav .anchor-tip{font-size:12.5px;color:var(--text-3);margin-bottom:14px;line-height:1.7;}
.anchor-nav ul{display:grid;gap:4px;}
.anchor-nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;
}
.anchor-nav a:hover{background:rgba(122,158,214,.09);color:var(--text);}
.anchor-nav a .num{font-family:var(--font-mono);font-size:12px;color:var(--brand);}
.anchor-nav a.is-current{background:rgba(22,224,184,.1);border-left-color:var(--brand);color:var(--text);}
.anchor-nav .anchor-cta{margin-top:16px;}

.anchor-mobile{display:none;margin-bottom:22px;}
.anchor-mobile summary{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-radius:var(--radius-sm);
  background:var(--bg-700);border:1px solid var(--line-strong);
  font-size:15px;font-weight:600;cursor:pointer;list-style:none;
}
.anchor-mobile summary::-webkit-details-marker{display:none;}
.anchor-mobile summary::after{content:"\f107";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--brand);}
.anchor-mobile[open] summary{border-color:rgba(22,224,184,.4);}
.anchor-mobile ul{margin-top:10px;display:grid;gap:6px;}
.anchor-mobile a{
  display:block;padding:11px 16px;border-radius:10px;
  background:rgba(122,158,214,.07);
  font-size:14px;color:var(--text-2);
}
.anchor-mobile a:hover{color:var(--brand);}

.faq-group{margin-bottom:44px;scroll-margin-top:96px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-head{margin-bottom:18px;}
.faq-group-head .group-index{
  font-family:var(--font-mono);font-size:13px;color:var(--brand);letter-spacing:.06em;
  display:block;margin-bottom:6px;
}
.faq-group-head h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.faq-group-head p{font-size:14.5px;color:var(--text-3);}

.acc-item{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--bg-700);
  backdrop-filter:blur(14px);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.acc-item:hover{border-color:rgba(22,224,184,.32);}
.acc-item[open]{border-color:rgba(22,224,184,.42);box-shadow:0 12px 32px rgba(2,8,20,.55);}
.acc-item summary{
  display:flex;align-items:center;gap:14px;
  padding:17px 20px;
  min-height:60px;
  cursor:pointer;
  list-style:none;
  font-size:16px;font-weight:600;color:var(--text);
}
.acc-item summary::-webkit-details-marker{display:none;}
.acc-num{font-family:var(--font-mono);font-size:13px;color:var(--brand);flex:0 0 auto;letter-spacing:.02em;}
.acc-title{flex:1 1 auto;}
.acc-icon{
  flex:0 0 auto;width:22px;height:22px;
  display:grid;place-items:center;
  color:var(--brand);font-size:16px;font-weight:600;
  transition:transform .2s ease;
}
.acc-icon::before{content:"+";}
.acc-item[open] .acc-icon::before{content:"−";}
.acc-body{padding:0 20px 22px 52px;color:var(--text-2);font-size:15px;line-height:1.85;}
.acc-body p{margin-bottom:12px;font-size:15px;}
.acc-body p:last-child{margin-bottom:0;}
.acc-body ol{margin:10px 0 0;padding-left:22px;list-style:decimal;display:grid;gap:7px;}
.acc-body li::marker{color:var(--brand);font-weight:600;}
.acc-body li{font-size:15px;color:var(--text-2);}
.acc-note{
  margin-top:14px;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(255,177,61,.08);
  border:1px solid rgba(255,177,61,.26);
  color:#F3D8AB;font-size:14px;line-height:1.75;
  display:flex;gap:10px;align-items:flex-start;
}
.acc-note i{color:var(--warn);margin-top:4px;}

/* 步骤轴 */
.steps-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.steps{position:relative;padding-left:36px;}
.steps::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(22,224,184,.75),rgba(22,224,184,.06));
  border-radius:2px;
}
.step{position:relative;margin-bottom:22px;}
.step:last-child{margin-bottom:0;}
.step::before{
  content:"";position:absolute;left:-33px;top:7px;
  width:12px;height:12px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 14px rgba(22,224,184,.75);
}
.step h3{font-size:16px;margin-bottom:5px;}
.step p{font-size:14.5px;color:var(--text-3);line-height:1.8;}
.steps-media{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  aspect-ratio:16/11;
}
.steps-media img{width:100%;height:100%;object-fit:cover;}
.steps-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:28px 22px 18px;
  font-size:13.5px;color:var(--text-2);
  background:linear-gradient(180deg,transparent,rgba(6,10,20,.92));
}

/* 现象速查卡 */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.glass-card{
  border-radius:var(--radius-lg);
  background:var(--bg-700);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.glass-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);box-shadow:0 16px 40px rgba(2,8,20,.6);}
.glass-card .card-body{padding:22px;}
.card-cover{aspect-ratio:16/10;overflow:hidden;background:rgba(10,17,35,.9);}
.card-cover img{width:100%;height:100%;object-fit:cover;}
.card-body h3{font-size:18px;margin-bottom:8px;}
.card-body p{font-size:14.5px;color:var(--text-3);line-height:1.8;}
.card-link{
  display:inline-flex;align-items:center;gap:7px;
  margin-top:14px;font-size:14px;font-weight:600;color:var(--brand);
}
.card-link:hover{color:#5CF0D0;}
.card-link i{font-size:12px;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:5px 11px;border-radius:999px;
  background:rgba(22,224,184,.1);
  border:1px solid rgba(22,224,184,.28);
  color:var(--brand);
}
.badge-accent{
  background:rgba(255,122,61,.1);
  border-color:rgba(255,122,61,.3);
  color:var(--accent);
}

/* 安全提示条 */
.notice-band{
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(16,26,48,.8),rgba(10,17,35,.6));
  backdrop-filter:blur(14px);
  padding:28px;
  box-shadow:var(--shadow-card);
}
.notice-band h2{font-size:22px;margin-bottom:10px;}
.notice-band > p{font-size:15px;color:var(--text-2);max-width:720px;}
.notice-list{
  margin-top:22px;
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
}
.notice-item{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--radius-md);
  background:rgba(122,158,214,.07);
  border:1px solid var(--line);
}
.notice-item i{color:var(--brand);margin-top:5px;font-size:15px;}
.notice-item strong{display:block;font-size:15px;color:var(--text);margin-bottom:4px;}
.notice-item span{font-size:14px;color:var(--text-3);line-height:1.75;}

/* 联系卡 */
.contact-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:32px;
  align-items:start;
}
.contact-aside figure{
  margin:0;border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
  aspect-ratio:16/11;
}
.contact-aside figure img{width:100%;height:100%;object-fit:cover;}
.contact-aside h2{font-size:24px;margin:22px 0 10px;}
.contact-aside p{font-size:15px;color:var(--text-2);}
.contact-meta{margin-top:18px;display:grid;gap:10px;}
.contact-meta li{
  display:flex;gap:10px;align-items:center;
  font-size:14px;color:var(--text-2);
}
.contact-meta i{color:var(--brand);width:16px;text-align:center;}

.form-card{
  border-radius:var(--radius-lg);
  background:var(--bg-700);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  padding:28px;
}
.form-card h3{font-size:19px;margin-bottom:6px;}
.form-card > p{font-size:14px;color:var(--text-3);margin-bottom:20px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
.field label{font-size:13px;color:var(--text-2);font-weight:600;}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  background:rgba(6,10,20,.6);
  border:1px solid var(--line-strong);
  color:var(--text);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.75;}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 1px var(--brand),0 0 20px rgba(22,224,184,.22);
}
.field select{
  appearance:none;
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23A6B3CB' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 16px center;
  padding-right:40px;
}
.field-hint{font-size:12.5px;color:var(--text-3);}
.form-foot{font-size:13px;color:var(--text-3);margin-top:14px;line-height:1.7;}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;
  border:1px solid rgba(22,224,184,.24);
  background:
    radial-gradient(600px 300px at 12% 0%, rgba(22,224,184,.16), transparent 62%),
    linear-gradient(135deg,rgba(16,26,48,.9),rgba(10,17,35,.75));
  backdrop-filter:blur(14px);
  padding:44px 40px;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,3vw,30px);margin-bottom:12px;max-width:640px;}
.cta-band p{font-size:15.5px;color:var(--text-2);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
.cta-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:26px;}
.cta-points span{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--text-2);
}
.cta-points i{color:var(--success);}

/* 相关分类 */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.related-card{
  display:flex;flex-direction:column;
  padding:24px;
  border-radius:var(--radius-lg);
  background:var(--bg-700);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:rgba(22,224,184,.35);}
.related-card .rc-icon{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;
  background:rgba(22,224,184,.12);
  border:1px solid rgba(22,224,184,.28);
  color:var(--brand);font-size:17px;
  margin-bottom:16px;
}
.related-card h3{font-size:17px;margin-bottom:8px;}
.related-card p{font-size:14px;color:var(--text-3);line-height:1.8;flex:1 1 auto;}
.related-card .rc-link{
  margin-top:16px;font-size:14px;font-weight:600;color:var(--brand);
  display:inline-flex;align-items:center;gap:7px;
}
.related-card.is-current{border-color:rgba(255,122,61,.36);}
.related-card.is-current .rc-icon{background:rgba(255,122,61,.12);border-color:rgba(255,122,61,.3);color:var(--accent);}

/* 页脚 */
.site-footer{
  background:var(--bg-800);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:88px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-brand p{font-size:14px;color:var(--text-3);margin-top:16px;max-width:320px;line-height:1.8;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);}
.footer-col li span{font-size:14px;color:var(--text-3);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:20px 0 26px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* 移动底部 Tab */
.mobile-tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:95;
  padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  background:rgba(10,17,35,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
}
.tab-item{
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:6px 2px;
  font-size:11px;color:var(--text-3);
  border-radius:10px;
}
.tab-item i{font-size:19px;}
.tab-item:hover{color:var(--text-2);}
.tab-item.is-active{color:var(--brand);}
.tab-item.is-active::before{
  content:"";position:absolute;top:-8px;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(22,224,184,.8);
}
.mobile-tabbar .tabs-inner{display:grid;grid-template-columns:repeat(4,1fr);}

/* 响应式 */
@media (max-width:1279px){
  .faq-layout{grid-template-columns:230px 1fr;gap:28px;}
}
@media (max-width:1023px){
  .section{padding:64px 0;}
  .page-hero-inner{padding:32px 0 44px;}
  .faq-layout{grid-template-columns:1fr;gap:0;}
  .anchor-nav{display:none;}
  .anchor-mobile{display:block;}
  .steps-layout{grid-template-columns:1fr;gap:28px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .contact-wrap{grid-template-columns:1fr;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .notice-list{grid-template-columns:1fr;}
}
@media (max-width:767px){
  body{padding-bottom:calc(78px + env(safe-area-inset-bottom));}
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .header-inner{height:64px;padding:0 16px;gap:12px;}
  .logo-sub{display:none;}
  .main-nav{
    position:fixed;top:64px;left:0;right:0;
    margin:0;
    padding:14px 16px 22px;
    background:rgba(6,10,20,.97);
    backdrop-filter:blur(18px);
    border-bottom:1px solid var(--line);
    box-shadow:0 24px 40px rgba(2,8,20,.7);
    transform:translateY(-12px);
    opacity:0;pointer-events:none;
    transition:opacity .22s ease,transform .22s ease;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .main-nav ul{flex-direction:column;align-items:stretch;gap:4px;}
  .main-nav a{padding:13px 14px;font-size:15.5px;border-radius:12px;}
  .main-nav a.is-active{background:rgba(22,224,184,.1);}
  .main-nav a.is-active::after{display:none;}
  .header-link{display:none;}
  .nav-toggle{display:inline-grid;place-items:center;}
  .page-hero h1{margin:14px 0 12px;}
  .hero-actions .btn{flex:1 1 auto;}
  .card-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px;}
  .mobile-tabbar{display:block;}
  .acc-body{padding:0 16px 20px 16px;}
  .acc-item summary{padding:15px 16px;gap:10px;font-size:15.5px;}
  .faq-group{margin-bottom:36px;}
  .cta-band{padding:30px 22px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .form-card{padding:22px;}
  .site-footer{padding:48px 0 0;margin-top:56px;}
}
@media (max-width:480px){
  .fact-chip{font-size:12.5px;padding:8px 13px;width:100%;justify-content:flex-start;}
  .cta-points{gap:12px;}
  .notice-band{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}