/* roulang page: index */
:root{
  --ink:#0A1626;
  --panel:#0F1D31;
  --panel-2:#132741;
  --cyan:#2CE0C8;
  --cyan-dark:#1FC4AF;
  --amber:#FFB45C;
  --t1:#F2F6FA;
  --t2:#A7B8CB;
  --t3:#6C8095;
  --light:#F4F7FB;
  --ink-soft:#0A1626;
  --line:rgba(255,255,255,.08);
  --line-light:rgba(10,22,38,.10);
  --ok:#3ED598;
  --err:#FF7A6B;
  --r-card:16px;
  --r-hero:24px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow-dark:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px rgba(2,10,22,.55);
  --glow:0 8px 24px rgba(44,224,200,.28);
  --gap:24px;
  --sec-desktop:96px;
  --sec-tablet:64px;
  --sec-mobile:44px;
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--t1);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border-radius:var(--r-img);object-fit:cover;}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--cyan-dark);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px dashed var(--cyan);outline-offset:3px;}
button,input{font-family:inherit;font-size:1rem;}
strong{font-weight:700;}
.num{font-variant-numeric:tabular-nums;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:var(--sec-desktop) 0;}
.section--light{background:var(--light);color:var(--ink-soft);}
.section--light a{color:#0A1626;}
.section--light a:hover{color:var(--cyan-dark);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.sec-head h2{font-size:2rem;line-height:1.25;letter-spacing:.01em;}
.sec-head .sec-sub{color:var(--t2);font-size:.95rem;margin-top:10px;max-width:640px;}
.section--light .sec-head .sec-sub{color:#5B6B7F;}
.eyebrow{
  display:inline-block;font-size:.78rem;letter-spacing:.04em;color:var(--cyan);
  border:1px solid rgba(44,224,200,.45);border-radius:var(--r-pill);
  padding:4px 14px;margin-bottom:16px;background:rgba(44,224,200,.07);
}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-light);
  box-shadow:0 2px 10px rgba(10,22,38,.05);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(10,22,38,.14);}
.nav-wrap{
  max-width:var(--maxw);margin:0 auto;padding:12px 24px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:12px;color:#0A1626;flex:0 0 auto;}
.brand:hover{color:#0A1626;}
.brand-icon{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,#0A1626,#132741);
  box-shadow:0 6px 16px rgba(10,22,38,.28);flex:0 0 auto;
}
.brand-icon svg{width:20px;height:20px;stroke:var(--cyan);}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:1rem;font-weight:800;letter-spacing:.01em;color:#0A1626;}
.brand-text small{font-size:.7rem;color:#5B6B7F;letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.main-nav a{
  color:#2B3A4D;font-size:.92rem;font-weight:600;padding:8px 14px;border-radius:var(--r-pill);
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.main-nav a:hover{background:#EEF2F7;color:#0A1626;}
.main-nav a.active{color:#0A1626;font-weight:800;position:relative;}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;background:var(--cyan);
}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-search{position:relative;}
.nav-search svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:16px;height:16px;stroke:#8496AA;}
.nav-search input{
  width:200px;height:42px;border-radius:var(--r-pill);border:1px solid var(--line-light);
  background:#F7F9FC;padding:0 16px 0 36px;color:#0A1626;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:#8496AA;}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(44,224,200,.18);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;cursor:pointer;
  font-weight:700;letter-spacing:.02em;text-align:center;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--cyan);color:#06121F;padding:13px 28px;box-shadow:var(--glow);}
.btn-primary:hover{background:#45E7D3;color:#06121F;transform:translateY(-2px);box-shadow:0 12px 30px rgba(44,224,200,.38);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--t1);border-color:rgba(255,255,255,.22);padding:13px 28px;}
.btn-ghost:hover{color:var(--cyan);border-color:var(--cyan);}
.btn-dark{background:#0A1626;color:#fff;padding:13px 28px;}
.btn-dark:hover{background:var(--cyan);color:#06121F;}
.btn-sm{padding:10px 20px;font-size:.9rem;}
.nav-cta{background:var(--cyan);color:#06121F;padding:11px 22px;font-size:.9rem;box-shadow:0 4px 14px rgba(44,224,200,.3);}
.nav-cta:hover{background:#45E7D3;color:#06121F;transform:translateY(-1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-light);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#0A1626;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#0A1626;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.mobile-drawer{
  display:none;background:#fff;border-bottom:1px solid var(--line-light);
  padding:16px 24px 24px;box-shadow:0 16px 30px rgba(10,22,38,.12);
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;color:#1E2C3C;font-weight:600;padding:14px 4px;border-bottom:1px solid #EDF1F6;
}
.mobile-drawer a:last-of-type{border-bottom:none;}
.mobile-drawer .nav-search{margin:14px 0;}
.mobile-drawer .nav-search input{width:100%;}
.mobile-drawer .btn{width:100%;}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(10,22,38,.86),rgba(10,22,38,.72)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  padding:88px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 420px at 12% 0%,rgba(44,224,200,.20),transparent 62%),
             radial-gradient(520px 380px at 92% 100%,rgba(44,224,200,.10),transparent 60%);
  pointer-events:none;
}
.hero .row{position:relative;z-index:2;}
.hero h1{font-size:clamp(1.9rem,4vw,3rem);line-height:1.22;letter-spacing:.01em;margin-bottom:18px;}
.hero h1 em{font-style:normal;color:var(--cyan);}
.hero-sub{color:var(--t2);font-size:1.08rem;max-width:520px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:.78rem;color:var(--t3);letter-spacing:.02em;
}
.hero-meta span.dot{width:1px;height:12px;background:rgba(255,255,255,.18);display:inline-block;}
.glass-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-hero);
  padding:28px;box-shadow:var(--shadow-dark);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.glass-card h3{font-size:1.2rem;margin-bottom:6px;}
.glass-card .ver-line{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.12);font-size:.88rem;color:var(--t2);
}
.glass-card .ver-line strong{color:var(--t1);font-variant-numeric:tabular-nums;}
.qr-box{
  display:flex;align-items:center;gap:16px;margin:20px 0 8px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--r-input);padding:14px;
}
.qr-code{
  width:88px;height:88px;flex:0 0 auto;border-radius:10px;background:#fff;
  background-image:
    repeating-linear-gradient(90deg,#0A1626 0 6px,transparent 6px 12px),
    repeating-linear-gradient(0deg,#0A1626 0 6px,transparent 6px 12px);
  background-blend-mode:multiply;opacity:.88;
}
.qr-text{font-size:.82rem;color:var(--t2);line-height:1.7;}
.qr-text b{display:block;color:var(--t1);font-size:.92rem;margin-bottom:4px;}
.glass-card .btn{width:100%;margin-top:16px;}

/* 爆款网格 */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.55);box-shadow:0 18px 38px rgba(2,10,22,.5);}
.card-media{overflow:hidden;border-radius:0;}
.card-media img{width:100%;height:100%;border-radius:0;transition:transform .35s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.card-body h3{font-size:1.2rem;line-height:1.4;}
.card-body p{color:var(--t2);font-size:.92rem;}
.link-cyan{color:var(--cyan);font-weight:700;font-size:.9rem;display:inline-flex;align-items:center;gap:6px;margin-top:auto;}
.link-cyan::after{content:"→";transition:transform .2s ease;}
.card:hover .link-cyan::after{transform:translateX(4px);}
.card-lg .card-media{height:300px;}
.card-sm .card-media{height:168px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-block;font-size:.75rem;letter-spacing:.04em;border-radius:var(--r-pill);
  padding:3px 12px;border:1px solid rgba(44,224,200,.45);color:var(--cyan);background:rgba(44,224,200,.07);
}
.badge-hot{background:var(--amber);border-color:var(--amber);color:#2A1B04;font-weight:700;}

/* 数据亮点 */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.stat-item{
  background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;text-align:left;
}
.stat-item .stat-num{font-size:2rem;font-weight:800;color:var(--cyan);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat-item .stat-label{color:var(--t2);font-size:.88rem;margin-top:6px;}

/* 评价轮播 */
.orbit-wrap{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-hero);padding:32px;box-shadow:var(--shadow-dark);}
.review-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);
  border-radius:var(--r-card);padding:26px;
}
.review-top{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.avatar{
  width:48px;height:48px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,var(--cyan),#1B8E82);display:grid;place-items:center;
  color:#06121F;font-weight:800;font-size:1rem;
}
.review-name{font-weight:700;font-size:.98rem;}
.review-role{font-size:.78rem;color:var(--t3);letter-spacing:.02em;}
.stars{color:var(--amber);letter-spacing:.14em;font-size:.9rem;margin-bottom:10px;}
.review-card p{color:var(--t2);font-size:.94rem;}
.orbit-bullets{text-align:center;margin-top:18px;}
.orbit-bullets button{
  width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);
  border:none;margin:0 5px;padding:0;transition:background .2s ease,transform .2s ease;
}
.orbit-bullets button.is-active{background:var(--cyan);transform:scale(1.25);}
.orbit-prev,.orbit-next{opacity:.55;}

/* 保障条 */
.guard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.guard-item{display:flex;gap:14px;align-items:flex-start;}
.guard-item svg{width:26px;height:26px;stroke:var(--cyan);flex:0 0 auto;margin-top:3px;}
.guard-item h3{font-size:1.02rem;color:var(--ink-soft);margin-bottom:4px;}
.guard-item p{font-size:.88rem;color:#5B6B7F;line-height:1.7;}

/* 最新信息 */
.news-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;height:100%;display:flex;flex-direction:column;gap:12px;
  transition:transform .25s ease,border-color .25s ease;
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.5);}
.news-card h3{font-size:1.08rem;line-height:1.5;}
.news-card h3 a{color:var(--t1);}
.news-card h3 a:hover{color:var(--cyan);}
.news-card .excerpt{color:var(--t2);font-size:.9rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;font-size:.78rem;color:var(--t3);}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed rgba(255,255,255,.16);
  border-radius:var(--r-card);background:rgba(255,255,255,.03);
}
.empty-state svg{width:38px;height:38px;stroke:var(--t3);margin:0 auto 14px;}
.empty-state p{color:var(--t2);margin-bottom:18px;}

/* FAQ */
.accordion{border:none;background:transparent;}
.accordion .accordion-item{border:none;margin-bottom:14px;border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:0 0 0 1px var(--line-light);}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:1rem;font-weight:700;color:var(--ink-soft);
  border:none;background:#fff;
}
.accordion .accordion-title:hover{background:#F7FAFD;color:var(--ink-soft);}
.accordion .accordion-title::before{
  content:"+";order:2;font-size:1.4rem;line-height:1;color:var(--cyan);font-weight:400;
  transition:transform .25s ease;flex:0 0 auto;
}
.accordion .accordion-title[aria-expanded="true"]::before{content:"−";transform:rotate(180deg);}
.accordion .accordion-content{padding:0 24px;border:none;background:#fff;color:#43566B;line-height:1.9;}
.accordion .accordion-content p{margin-bottom:14px;}
.accordion .accordion-content p:last-child{margin-bottom:0;}
.accordion .accordion-item.is-active{box-shadow:0 0 0 1px rgba(44,224,200,.5);}

/* CTA 尾块 */
.cta-block{
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(10,22,38,.9),rgba(13,29,49,.85)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  border-radius:var(--r-hero);padding:64px 40px;text-align:center;
  box-shadow:var(--shadow-dark);
}
.cta-block::after{
  content:"";position:absolute;width:420px;height:420px;border-radius:50%;
  left:50%;top:-260px;transform:translateX(-50%);
  background:radial-gradient(circle,rgba(44,224,200,.28),transparent 68%);
}
.cta-block > *{position:relative;z-index:2;}
.cta-block h2{font-size:2rem;margin-bottom:14px;}
.cta-block p{color:var(--t2);max-width:600px;margin:0 auto 28px;}
.subscribe{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:640px;margin:28px auto 0;
}
.subscribe input[type="text"],.subscribe input[type="email"]{
  flex:1 1 260px;height:50px;border-radius:var(--r-input);
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);
  color:var(--t1);padding:0 16px;transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe input::placeholder{color:var(--t3);}
.subscribe input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(44,224,200,.18);}
.consent{display:flex;align-items:center;gap:8px;justify-content:center;color:var(--t3);font-size:.8rem;margin-top:16px;}
.consent input{width:16px;height:16px;accent-color:var(--cyan);}

/* 页脚 */
.site-footer{background:#07101D;color:var(--t2);padding:64px 0 0;border-top:1px solid var(--line);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{color:var(--t1);font-size:1rem;}
.footer-col h4{color:var(--t1);font-size:.95rem;margin-bottom:16px;letter-spacing:.04em;}
.footer-col li{margin-bottom:10px;font-size:.88rem;}
.footer-col a{color:var(--t2);}
.footer-col a:hover{color:var(--cyan);}
.footer-desc{font-size:.86rem;color:var(--t3);line-height:1.8;max-width:320px;}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:.78rem;color:var(--t3);
}

/* 响应式 */
@media screen and (max-width:1024px){
  :root{--sec-desktop:64px;}
  .main-nav{display:none;}
  .nav-search{display:none;}
  .nav-right .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .guard-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .hero{padding:64px 0 72px;}
  .sec-head h2{font-size:1.65rem;}
}
@media screen and (max-width:768px){
  :root{--sec-desktop:44px;}
  .section{padding:var(--sec-mobile) 0;}
  .container{padding:0 18px;}
  .nav-wrap{padding:10px 18px;}
  .card-lg .card-media{height:220px;}
  .cta-block{padding:44px 22px;}
  .cta-block h2{font-size:1.5rem;}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .hero h1{font-size:1.75rem;}
}
@media screen and (max-width:576px){
  .stat-strip{grid-template-columns:1fr;}
  .guard-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .card-sm .card-media{height:160px;}
  .brand-text small{display:none;}
  .hero-actions .btn{width:100%;}
}

/* roulang page: category1 */
/* ================= 设计变量 ================= */
:root{
  --ink:#0A1626;
  --ink-deep:#08121F;
  --panel:#0F1D31;
  --panel-hover:#132741;
  --cyan:#2CE0C8;
  --cyan-hover:#1FC4AF;
  --cyan-bright:#3FEBD3;
  --amber:#FFB45C;
  --text:#F2F6FA;
  --text-2:#A7B8CB;
  --text-3:#6C8095;
  --light:#F4F7FB;
  --light-text:#0A1626;
  --light-sub:#48586B;
  --border:rgba(255,255,255,.08);
  --border-light:rgba(10,22,38,.10);
  --radius-card:16px;
  --radius-hero:24px;
  --radius-pill:999px;
  --radius-input:12px;
  --radius-img:14px;
  --shadow-card:0 0 0 1px rgba(255,255,255,.06), 0 18px 40px rgba(2,10,22,.55);
  --shadow-glow:0 8px 24px rgba(44,224,200,.28);
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 620px at 10% -6%, rgba(44,224,200,.10), transparent 62%),
    radial-gradient(760px 520px at 92% 6%, rgba(44,224,200,.05), transparent 66%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
button,input,select{font-family:inherit;font-size:inherit;color:inherit}
button{border:0;background:none;cursor:pointer}
input[type="search"],input[type="text"],input[type="email"],input[type="tel"]{-webkit-appearance:none;appearance:none;outline:none}
:focus-visible{outline:2px dashed var(--cyan);outline-offset:3px}
.num{font-variant-numeric:tabular-nums}

/* ================= 容器与栅格 ================= */
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.grid-padding-x{margin-left:-12px;margin-right:-12px}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-light{background:var(--light);color:var(--light-text)}
.section-light h2,.section-light h3,.section-light .eyebrow{color:var(--light-text)}
.section-light p{color:var(--light-sub)}

/* 标题层级 */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--cyan);font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:20px;height:2px;background:var(--cyan);border-radius:2px;display:inline-block}
h1{font-size:clamp(1.9rem,4vw,3rem);line-height:1.2;font-weight:700;letter-spacing:.01em}
h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.3;font-weight:700}
h3{font-size:clamp(1.05rem,1.6vw,1.35rem);line-height:1.4;font-weight:600}
.lead{font-size:1.02rem;color:var(--text-2);line-height:1.85}
.section-head{max-width:760px;margin-bottom:48px}
.section-head p{margin-top:14px;color:var(--text-2);line-height:1.8}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  padding:13px 26px;font-size:.95rem;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--cyan);color:#062028;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:var(--cyan-bright);transform:translateY(-2px);box-shadow:0 12px 30px rgba(44,224,200,.4);color:#062028}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn-ghost:active{transform:translateY(1px)}
.btn-dark{background:var(--ink);color:#FFFFFF}
.btn-dark:hover{background:var(--cyan);color:#062028;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:.86rem}
.btn-block{width:100%}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(10,22,38,.08);
  box-shadow:0 2px 10px rgba(10,22,38,.04);
  transition:box-shadow .28s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 26px rgba(10,22,38,.12)}
.header-inner{
  max-width:1200px;margin:0 auto;padding:12px 24px;
  display:flex;align-items:center;gap:20px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-icon{
  width:42px;height:42px;border-radius:12px;flex:0 0 auto;
  background:linear-gradient(150deg,#0A1626,#14304A);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 0 1px rgba(44,224,200,.25);
}
.brand-icon svg{width:22px;height:22px;stroke:var(--cyan)}
.brand-text strong{display:block;font-size:1rem;line-height:1.25;color:#0A1626;font-weight:700;letter-spacing:.01em}
.brand-text em{display:block;font-size:.7rem;font-style:normal;color:#5B6B7F;letter-spacing:.04em;line-height:1.4}
.main-nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center}
.main-nav a{
  position:relative;font-size:.92rem;color:#3C4A5C;
  padding:9px 13px;border-radius:var(--radius-pill);
}
.main-nav a:hover{background:rgba(10,22,38,.05);color:#0A1626}
.main-nav a.active{color:#0A1626;font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--cyan);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:rgba(10,22,38,.04);
  border:1px solid rgba(10,22,38,.10);
  border-radius:var(--radius-pill);
  padding:7px 14px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.search-box:focus-within{border-color:var(--cyan);background:#fff;box-shadow:0 0 0 3px rgba(44,224,200,.18)}
.search-box svg{width:15px;height:15px;stroke:#6C8095;flex:0 0 auto}
.search-box input{border:0;background:transparent;width:146px;font-size:.86rem;color:#0A1626}
.search-box input::placeholder{color:#8A99A9}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(10,22,38,.12);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#0A1626;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#0A1626;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.mobile-drawer{display:none;background:#FFFFFF;border-top:1px solid rgba(10,22,38,.08);padding:16px 24px 24px}
.mobile-drawer.open{display:block}
.mobile-drawer a{display:block;padding:12px 4px;font-size:.96rem;color:#25333F;border-bottom:1px solid rgba(10,22,38,.06)}
.mobile-drawer a.active{color:#0A1626;font-weight:700}
.mobile-drawer .mobile-search{margin:14px 0 16px;width:100%}
.mobile-drawer .mobile-search input{width:100%}

/* ================= Hero ================= */
.category-hero{
  position:relative;overflow:hidden;
  padding:76px 0 84px;
  background-image:
    linear-gradient(105deg, rgba(6,14,26,.94) 0%, rgba(8,18,34,.86) 48%, rgba(10,22,38,.74) 100%),
    radial-gradient(700px 460px at 6% 0%, rgba(44,224,200,.20), transparent 62%),
    url(/assets/images/backpic/back-1.webp);
  background-size:cover,cover,cover;
  background-position:center,center,center;
}
.hero-inner{position:relative;z-index:2}
.hero-copy h1{margin-bottom:18px}
.hero-lead{color:var(--text-2);font-size:1.02rem;line-height:1.85;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px}
.hero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;font-size:.78rem;color:var(--text-3);font-variant-numeric:tabular-nums}
.hero-meta i{width:1px;height:12px;background:rgba(255,255,255,.16);display:inline-block}

.glass-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-radius:var(--radius-hero);
  padding:26px 26px 24px;
  box-shadow:0 0 0 1px rgba(255,255,255,.04), 0 24px 50px rgba(2,10,22,.5);
}
.glass-card h3{font-size:1.05rem;margin-bottom:6px}
.glass-card .glass-note{font-size:.82rem;color:var(--text-3);margin-bottom:18px}
.glass-list{display:grid;gap:14px}
.glass-list .row-item{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;font-size:.88rem;padding-bottom:13px;border-bottom:1px dashed rgba(255,255,255,.10)}
.glass-list .row-item:last-child{border-bottom:0;padding-bottom:0}
.glass-list .row-item span{color:var(--text-3)}
.glass-list .row-item strong{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.status-dot{display:inline-flex;align-items:center;gap:7px;color:var(--cyan);font-weight:600}
.status-dot::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(44,224,200,.16)}

/* ================= 图文两栏 ================= */
.split-wrap{display:block}
.sticky-side{position:sticky;top:104px}
.side-figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-card)}
.side-figure img{width:100%;height:260px;object-fit:cover;border-radius:0}
.side-panel{
  margin-top:22px;background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:24px;
}
.side-panel h3{font-size:1rem;margin-bottom:14px}
.check-list li{
  position:relative;padding-left:22px;font-size:.9rem;color:var(--text-2);
  line-height:1.8;margin-bottom:12px;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:9px;height:9px;border-radius:50%;
  background:rgba(44,224,200,.16);border:2px solid var(--cyan);
}

.entry-list{display:grid;gap:16px}
.entry-card{
  display:flex;gap:18px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:18px;
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,border-color .25s ease,background-color .25s ease;
}
.entry-card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.55);background:var(--panel-hover)}
.entry-thumb{flex:0 0 132px;width:132px;height:92px;overflow:hidden;border-radius:var(--radius-img);border:1px solid var(--border)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .35s ease}
.entry-card:hover .entry-thumb img{transform:scale(1.04)}
.entry-body{flex:1 1 auto;min-width:0}
.entry-body h3{font-size:1rem;margin-bottom:7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.entry-body p{font-size:.87rem;color:var(--text-2);line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-foot{display:flex;align-items:center;gap:14px;margin-top:10px;font-size:.78rem;color:var(--text-3);font-variant-numeric:tabular-nums}
.entry-link{color:var(--cyan);font-weight:600;font-size:.84rem}
.entry-link:hover{color:var(--cyan-bright);text-decoration:underline}

/* ================= 徽章与标签 ================= */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:var(--radius-pill);
  padding:4px 12px;font-size:.74rem;letter-spacing:.04em;line-height:1.6;
  border:1px solid rgba(44,224,200,.5);color:var(--cyan);background:rgba(44,224,200,.06);
}
.badge-amber{background:var(--amber);border-color:var(--amber);color:#2B1A00;font-weight:600}
.badge-muted{border-color:rgba(255,255,255,.16);color:var(--text-3);background:transparent}
.section-light .badge{border-color:rgba(10,22,38,.18);color:#1E5A50;background:rgba(44,224,200,.10)}

/* ================= 浅色对照带 ================= */
.table-wrap{
  overflow-x:auto;background:#FFFFFF;border-radius:var(--radius-card);
  border:1px solid var(--border-light);box-shadow:0 14px 34px rgba(10,22,38,.08);
  -webkit-overflow-scrolling:touch;
}
table.spec-table{width:100%;border-collapse:collapse;min-width:760px}
table.spec-table thead th{
  background:#0A1626;color:#F2F6FA;font-size:.82rem;font-weight:600;
  letter-spacing:.04em;text-align:left;padding:15px 20px;white-space:nowrap;
}
table.spec-table tbody td{
  padding:15px 20px;font-size:.88rem;color:#25333F;
  border-bottom:1px solid rgba(10,22,38,.07);font-variant-numeric:tabular-nums;
}
table.spec-table tbody tr:nth-child(even){background:rgba(10,22,38,.03)}
table.spec-table tbody tr:last-child td{border-bottom:0}
table.spec-table tbody tr:hover{background:rgba(44,224,200,.08)}
.tag-stable{color:#14795E;font-weight:600}

.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
.assure-item{
  background:#FFFFFF;border:1px solid var(--border-light);border-radius:var(--radius-card);
  padding:24px 22px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.assure-item:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.6);box-shadow:0 16px 34px rgba(10,22,38,.10)}
.assure-item .ico{width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;background:rgba(44,224,200,.14);margin-bottom:14px}
.assure-item .ico svg{width:19px;height:19px;stroke:#12907E;stroke-width:1.8;fill:none}
.assure-item h3{font-size:1rem;margin-bottom:8px;color:var(--light-text)}
.assure-item p{font-size:.86rem;line-height:1.75;color:var(--light-sub)}

/* ================= 时间线 ================= */
.timeline{position:relative;margin-top:8px;padding-left:28px}
.timeline::before{content:"";position:absolute;left:6px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,rgba(44,224,200,.6),rgba(44,224,200,.05))}
.timeline li{position:relative;padding:0 0 28px 0}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-28px;top:8px;width:12px;height:12px;border-radius:50%;
  background:var(--ink);border:2px solid var(--cyan);box-shadow:0 0 0 4px rgba(44,224,200,.12);
}
.timeline .tl-date{font-size:.78rem;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:.03em}
.timeline .tl-title{font-size:1rem;font-weight:600;margin:4px 0 6px}
.timeline .tl-desc{font-size:.88rem;color:var(--text-2);line-height:1.78}

/* ================= FAQ ================= */
.faq-panel{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-hero);
  padding:30px;box-shadow:var(--shadow-card);
}
.faq-item{border:1px solid var(--border);border-radius:14px;background:rgba(255,255,255,.02);margin-bottom:12px;overflow:hidden;transition:border-color .25s ease}
.faq-item:last-child{margin-bottom:0}
.faq-item[open]{border-color:rgba(44,224,200,.45);background:rgba(44,224,200,.04)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:.98rem;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-mark{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;transition:transform .25s ease}
.faq-mark::before{left:0;right:0;top:8px;height:2px}
.faq-mark::after{top:0;bottom:0;left:8px;width:2px}
.faq-item[open] .faq-mark::after{transform:scaleY(0)}
.faq-body{padding:0 22px 20px;font-size:.9rem;color:var(--text-2);line-height:1.9}

/* ================= 底部 CTA ================= */
.cta-band{
  position:relative;overflow:hidden;
  background-image:
    linear-gradient(120deg, rgba(6,14,26,.95), rgba(10,22,38,.9)),
    radial-gradient(600px 420px at 84% 20%, rgba(44,224,200,.18), transparent 62%),
    url(/assets/images/backpic/back-2.webp);
  background-size:cover,cover,cover;
  background-position:center;
  padding:92px 0;
  text-align:center;
}
.cta-band h2{max-width:760px;margin:0 auto 16px}
.cta-band .cta-desc{max-width:640px;margin:0 auto 30px;color:var(--text-2);line-height:1.85}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-bottom:32px}
.subscribe-form{max-width:620px;margin:0 auto;display:flex;gap:12px;flex-wrap:wrap}
.subscribe-form .field{flex:1 1 300px;min-width:240px}
.subscribe-form input[type="text"]{
  width:100%;background:rgba(255,255,255,.05);
  border:1px solid var(--border);border-radius:var(--radius-input);
  padding:14px 18px;color:var(--text);font-size:.92rem;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.subscribe-form input[type="text"]::placeholder{color:var(--text-3)}
.subscribe-form input[type="text"]:focus{border-color:var(--cyan);background:rgba(255,255,255,.08);box-shadow:0 0 0 3px rgba(44,224,200,.18)}
.subscribe-form .btn{flex:0 0 auto}
.form-consent{max-width:620px;margin:16px auto 0;display:flex;align-items:flex-start;gap:9px;text-align:left;font-size:.78rem;color:var(--text-3);line-height:1.7}
.form-consent input{width:15px;height:15px;margin-top:4px;accent-color:var(--cyan);flex:0 0 auto}

/* ================= 页脚 ================= */
.site-footer{background:var(--ink-deep);border-top:1px solid var(--border);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-icon{background:linear-gradient(150deg,#0F2237,#14304A)}
.footer-brand strong{font-size:1rem;color:var(--text)}
.footer-desc{font-size:.86rem;color:var(--text-3);line-height:1.85;max-width:34ch}
.footer-col h4{font-size:.9rem;color:var(--text);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:12px;font-size:.86rem;color:var(--text-3);line-height:1.7}
.footer-col ul li a{color:var(--text-2)}
.footer-col ul li a:hover{color:var(--cyan)}
.footer-bottom{
  border-top:1px solid var(--border);padding:22px 0;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:.78rem;color:var(--text-3);line-height:1.7;
}

/* ================= 响应式 ================= */
@media screen and (max-width:1280px){
  .search-box input{width:120px}
}
@media screen and (max-width:1100px){
  .search-box{display:none}
  .main-nav a{padding:9px 10px;font-size:.88rem}
}
@media screen and (max-width:1023px){
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .category-hero{padding:60px 0 66px}
  .sticky-side{position:static;margin-bottom:36px}
  .assure-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:72px 0}
}
@media screen and (max-width:767px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .header-inner{padding:10px 18px;gap:12px}
  .header-actions .btn{display:none}
  .brand-text em{display:none}
  .grid-container{padding-left:18px;padding-right:18px}
  .section{padding:44px 0}
  .section-tight{padding:40px 0}
  .category-hero{padding:44px 0 50px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1 1 auto}
  .glass-card{padding:22px 20px;border-radius:18px}
  .entry-card{flex-direction:column;gap:14px}
  .entry-thumb{flex:0 0 auto;width:100%;height:170px}
  .entry-body h3{white-space:normal}
  .faq-panel{padding:20px 16px;border-radius:18px}
  .faq-item summary{padding:16px 16px;font-size:.94rem}
  .faq-body{padding:0 16px 18px}
  .assure-grid{grid-template-columns:1fr 1fr;gap:14px;margin-top:32px}
  .assure-item{padding:18px 16px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .cta-band{padding:56px 0}
}
@media screen and (max-width:520px){
  .brand-text strong{font-size:.9rem}
  .assure-grid{grid-template-columns:1fr}
  .hero-meta{gap:8px;font-size:.74rem}
  .timeline{padding-left:22px}
  .timeline li::before{left:-22px}
  .section-head{margin-bottom:32px}
}

/* roulang page: article */
:root{
  --ink-900:#0A1626;
  --ink-800:#0E1E36;
  --panel:#0F1D31;
  --panel-2:#132741;
  --cyan:#2CE0C8;
  --cyan-hover:#45E6D0;
  --cyan-deep:#1FC4AF;
  --cyan-text:#0FA894;
  --amber:#FFB45C;
  --text:#F2F6FA;
  --text-2:#A7B8CB;
  --text-3:#6C8095;
  --light-bg:#F4F7FB;
  --light-text:#0A1626;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --line-light:rgba(10,22,38,.10);
  --success:#3ED598;
  --danger:#FF7A6B;
  --r-card:16px;
  --r-hero:24px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --shadow-dark:0 0 0 1px rgba(255,255,255,.06),0 18px 40px rgba(2,10,22,.55);
  --shadow-glow:0 8px 24px rgba(44,224,200,.28);
  --shadow-light:0 14px 30px rgba(10,22,38,.10);
  --container:1200px;
  --section-y:96px;
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}
::selection{background:rgba(44,224,200,.28);color:#fff}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:13px 26px;font-size:.95rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.2;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--cyan);color:#06231F;box-shadow:var(--shadow-glow)}
.btn-primary:hover{background:var(--cyan-hover);transform:translateY(-2px);box-shadow:0 12px 30px rgba(44,224,200,.38)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:.87rem}
.btn:focus-visible{outline:2px dashed var(--cyan);outline-offset:3px}
.btn-link{color:var(--cyan);font-weight:600;display:inline-flex;align-items:center;gap:6px;font-size:.9rem;transition:gap .2s ease,color .2s ease}
.btn-link:hover{gap:10px;color:var(--cyan-hover)}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(10,22,38,.08);
  box-shadow:0 2px 12px rgba(10,22,38,.05);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{box-shadow:0 8px 26px rgba(10,22,38,.12)}
.nav-inner{display:flex;align-items:center;gap:18px;height:74px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-icon{
  width:40px;height:40px;border-radius:13px;flex:0 0 40px;
  background:linear-gradient(140deg,#2CE0C8,#1FC4AF);
  display:grid;place-items:center;color:#052B26;
  box-shadow:0 6px 16px rgba(44,224,200,.32);
}
.brand-icon svg{width:22px;height:22px;stroke:currentColor}
.brand-text strong{display:block;font-size:.98rem;font-weight:800;color:#0A1626;letter-spacing:.01em;line-height:1.25}
.brand-text em{display:block;font-style:normal;font-size:.7rem;color:#5B6B7F;letter-spacing:.06em;line-height:1.4}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
  position:relative;padding:9px 14px;border-radius:var(--r-pill);
  color:#3E4E62;font-size:.93rem;transition:background .18s ease,color .18s ease;
}
.main-nav a:hover{background:rgba(10,22,38,.055);color:#0A1626}
.main-nav a.active{color:#0A1626;font-weight:700}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;
  border-radius:2px;background:var(--cyan);
}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;
  background:#F1F4F9;border:1px solid rgba(10,22,38,.08);border-radius:var(--r-pill);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search svg{width:16px;height:16px;stroke:#7B8CA0;flex:0 0 16px}
.nav-search input{
  border:0;background:transparent;outline:none;width:158px;
  font-size:.88rem;color:#0A1626;
}
.nav-search input::placeholder{color:#8494A6}
.nav-search:focus-within{background:#fff;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(44,224,200,.18)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid rgba(10,22,38,.12);
  background:#fff;cursor:pointer;align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:#0A1626;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#0A1626;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{display:none;background:#fff;border-top:1px solid rgba(10,22,38,.08);padding:14px 24px 22px}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:12px 4px;color:#243447;font-size:.95rem;border-bottom:1px solid rgba(10,22,38,.06);
}
.mobile-drawer a.active{color:#0A1626;font-weight:700}
.mobile-drawer .drawer-search{
  display:flex;align-items:center;gap:8px;margin:16px 0 12px;height:44px;padding:0 16px;
  background:#F1F4F9;border-radius:var(--r-pill);border:1px solid rgba(10,22,38,.08);
}
.mobile-drawer .drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:.9rem;color:#0A1626}
.mobile-drawer .btn{width:100%;margin-top:6px}

/* ---------- Article Hero ---------- */
.article-hero{position:relative;overflow:hidden;background:var(--ink-900);padding:60px 0 56px}
.article-hero .hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.4;filter:saturate(.85);
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,22,38,.74) 0%,rgba(10,22,38,.95) 100%);
}
.article-hero::before{
  content:"";position:absolute;width:640px;height:640px;left:-180px;top:-300px;
  background:radial-gradient(circle,rgba(44,224,200,.16),transparent 68%);
  pointer-events:none;z-index:1;
}
.article-hero .container{position:relative;z-index:3}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.79rem;color:#7B8FA5;margin-bottom:20px}
.crumbs a{color:#A7B8CB;transition:color .18s ease}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{color:#3E5468}
.crumbs .current{color:#7B8FA5;max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:var(--r-pill);
  font-size:.73rem;letter-spacing:.06em;border:1px solid rgba(44,224,200,.45);
  color:var(--cyan);background:rgba(44,224,200,.08);
}
.badge-amber{background:var(--amber);color:#2B1B04;border-color:transparent;font-weight:600}
.article-hero h1{
  font-size:clamp(1.7rem,3.5vw,2.6rem);line-height:1.28;font-weight:800;
  margin:16px 0 18px;max-width:900px;letter-spacing:.005em;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;font-size:.78rem;color:var(--text-3)}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#3E5468;display:inline-block}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-row svg{width:14px;height:14px;stroke:#6C8095}

/* ---------- Article Layout ---------- */
.article-main{padding:var(--section-y) 0;background:
  radial-gradient(1000px 520px at 82% -12%,rgba(44,224,200,.07),transparent 62%),
  var(--ink-900);
}
.article-layout{
  display:grid;grid-template-columns:minmax(0,760px) 240px;gap:44px;justify-content:center;align-items:start;
}
.article-panel{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-dark);
  padding:44px 46px;
}
.article-body{font-size:1rem;line-height:1.85;color:#DCE6F1;word-break:break-word}
.article-body>p:first-child{font-size:1.04rem;color:#C9D8E8}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:1.5rem;line-height:1.38;color:var(--text);
  margin:2em 0 .85em;padding-left:16px;font-weight:700;scroll-margin-top:110px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:3px;background:var(--cyan);
}
.article-body h3{font-size:1.16rem;line-height:1.45;color:var(--text);margin:1.7em 0 .6em;font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.25em}
.article-body ul{list-style:none;padding-left:1.15em}
.article-body ul>li{position:relative;margin:.45em 0}
.article-body ul>li::before{
  content:"";position:absolute;left:-1.05em;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--cyan);
}
.article-body ol>li{margin:.45em 0}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;border-left:4px solid var(--cyan);
  background:rgba(44,224,200,.06);border-radius:0 12px 12px 0;color:#C6D6E6;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  max-width:100%;height:auto;border-radius:var(--r-img);border:1px solid var(--line);
  margin:1.7em auto;
}
.article-body figure{margin:1.7em 0}
.article-body figcaption{text-align:center;font-size:.78rem;color:var(--text-3);margin-top:-1em}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(44,224,200,.35);transition:border-color .18s ease,color .18s ease}
.article-body a:hover{color:var(--cyan-hover);border-bottom-color:var(--cyan-hover)}
.article-body strong{color:#fff;font-weight:700}
.article-body hr{border:0;height:1px;background:var(--line);margin:2.2em 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.7em 0;font-size:.92rem;
  background:var(--light-bg);color:var(--light-text);border-radius:12px;
  display:block;max-width:100%;overflow-x:auto;
}
.article-body thead{background:#E4EBF4}
.article-body th{
  padding:13px 16px;text-align:left;font-weight:700;color:#0A1626;
  white-space:nowrap;font-size:.89rem;letter-spacing:.01em;
}
.article-body td{padding:12px 16px;border-top:1px solid var(--line-light);color:#33455A;white-space:nowrap}
.article-body tbody tr:nth-child(even) td{background:#EDF2F9}
.article-body pre{
  margin:1.6em 0;padding:18px 20px;background:#071120;
  border:1px solid var(--line);border-radius:12px;overflow-x:auto;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.86rem;line-height:1.72;color:#B9CBDC;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.88em;background:rgba(44,224,200,.12);color:var(--cyan);
  padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:transparent;color:inherit;padding:0;font-size:.86rem}

/* ---------- TOC ---------- */
.article-side{position:sticky;top:98px}
.toc-card{
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px 18px;
}
.toc-card h3{
  font-size:.8rem;font-weight:700;letter-spacing:.1em;color:var(--text-2);
  margin:0 0 14px;padding-left:2px;
}
.toc-card ul{list-style:none;margin:0;padding:0}
.toc-card li{margin:0}
.toc-card a{
  display:block;padding:8px 12px;font-size:.84rem;line-height:1.5;color:#93A6BA;
  border-left:2px solid transparent;border-radius:0 8px 8px 0;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
}
.toc-card a:hover{color:var(--cyan);background:rgba(44,224,200,.07)}
.toc-card a.current{color:var(--cyan);border-left-color:var(--cyan);background:rgba(44,224,200,.09)}
.toc-card .toc-empty{font-size:.82rem;color:var(--text-3);padding:6px 2px}
.toc-toggle{
  display:none;width:100%;margin-bottom:16px;padding:13px 18px;
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;
  color:var(--text-2);font-size:.88rem;cursor:pointer;align-items:center;justify-content:space-between;
}
.toc-toggle .chev{transition:transform .22s ease}
.toc-toggle.open .chev{transform:rotate(180deg)}

/* ---------- Empty state ---------- */
.empty-state{text-align:center;padding:36px 8px 28px}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  background:rgba(44,224,200,.1);display:grid;place-items:center;color:var(--cyan);
}
.empty-state .empty-icon svg{width:30px;height:30px;stroke:currentColor}
.empty-state h2{font-size:1.32rem;margin-bottom:10px;color:var(--text)}
.empty-state p{color:var(--text-2);max-width:44ch;margin:0 auto 22px;font-size:.94rem}

/* ---------- Light band ---------- */
.light-band{background:var(--light-bg);color:var(--light-text);padding:var(--section-y) 0}
.light-band .eyebrow{
  display:inline-block;font-size:.75rem;letter-spacing:.14em;color:var(--cyan-text);
  font-weight:700;margin-bottom:12px;
}
.light-band h2{font-size:clamp(1.5rem,2.6vw,1.95rem);line-height:1.3;color:var(--light-text);font-weight:800}
.light-band .band-lead{color:#4B5C70;font-size:.98rem;max-width:64ch;margin-top:12px}
.band-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:38px}
.check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.check-item{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-card);
  padding:24px 22px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.check-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-light);border-color:rgba(44,224,200,.6)}
.check-item .ic{
  width:40px;height:40px;border-radius:12px;background:rgba(44,224,200,.14);
  display:grid;place-items:center;color:var(--cyan-text);margin-bottom:15px;
}
.check-item .ic svg{width:20px;height:20px;stroke:currentColor}
.check-item h3{font-size:1.02rem;color:var(--light-text);margin-bottom:8px;font-weight:700}
.check-item p{font-size:.88rem;color:#5B6B7F;line-height:1.72}
.light-band .btn-primary{background:#0A1626;color:#fff;box-shadow:0 10px 24px rgba(10,22,38,.22)}
.light-band .btn-primary:hover{background:var(--cyan);color:#06231F;box-shadow:0 12px 28px rgba(44,224,200,.35)}

/* ---------- Related cards ---------- */
.section{padding:var(--section-y) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.45rem,2.6vw,1.9rem);font-weight:800;line-height:1.3}
.section-head p{color:var(--text-2);font-size:.95rem;margin-top:10px;max-width:60ch}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.55);box-shadow:0 0 0 1px rgba(44,224,200,.22),var(--shadow-dark)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:#0B1A2E}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .tag{
  position:absolute;left:14px;top:14px;padding:4px 11px;border-radius:var(--r-pill);
  font-size:.7rem;letter-spacing:.04em;background:rgba(10,22,38,.72);
  border:1px solid rgba(44,224,200,.4);color:var(--cyan);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:1.06rem;line-height:1.5;color:var(--text);margin-bottom:10px;font-weight:700}
.card-body p{font-size:.88rem;color:var(--text-2);line-height:1.72;margin-bottom:16px}
.card-body .btn-link{margin-top:auto}
.card-meta{font-size:.76rem;color:var(--text-3);margin-bottom:12px;letter-spacing:.03em}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:var(--r-hero);padding:12px 32px;box-shadow:var(--shadow-dark);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:20px 0;font-size:1rem;font-weight:600;color:var(--text);
  transition:color .18s ease;
}
.faq-item summary:hover{color:var(--cyan)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  position:relative;width:22px;height:22px;flex:0 0 22px;border-radius:50%;
  border:1px solid rgba(44,224,200,.5);transition:transform .25s ease,background .25s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--cyan);border-radius:2px;
}
.faq-icon::before{width:10px;height:1.6px}
.faq-icon::after{width:1.6px;height:10px;transition:opacity .2s ease}
details[open] .faq-icon{transform:rotate(180deg);background:rgba(44,224,200,.12)}
details[open] .faq-icon::after{opacity:0}
.faq-body{padding:0 0 20px;color:var(--text-2);font-size:.94rem;line-height:1.9;max-width:78ch}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;overflow:hidden;background:var(--ink-800);
  padding:var(--section-y) 0;border-top:1px solid var(--line);
}
.cta-block .cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.24}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(720px 420px at 22% 8%,rgba(44,224,200,.16),transparent 66%);
}
.cta-block .container{position:relative;z-index:2;text-align:center}
.cta-block h2{font-size:clamp(1.55rem,3vw,2.15rem);font-weight:800;line-height:1.3}
.cta-block .cta-lead{color:var(--text-2);max-width:62ch;margin:16px auto 28px;font-size:.98rem}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-bottom:34px}
.sub-form{
  display:flex;flex-wrap:wrap;justify-content:center;gap:12px;
  max-width:620px;margin:0 auto;
}
.sub-form input[type="text"],.sub-form input[type="email"]{
  flex:1 1 260px;min-width:0;height:50px;padding:0 18px;border-radius:var(--r-input);
  background:rgba(255,255,255,.05);border:1px solid var(--line-strong);
  color:var(--text);font-size:.92rem;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(44,224,200,.18);background:rgba(255,255,255,.07)}
.sub-form input.invalid{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,122,107,.16)}
.sub-form .btn{height:50px;padding:0 28px}
.sub-note{
  display:flex;align-items:center;justify-content:center;gap:9px;
  margin-top:16px;font-size:.79rem;color:var(--text-3);
}
.sub-note input{width:15px;height:15px;accent-color:var(--cyan)}
.form-msg{margin-top:14px;font-size:.83rem;color:var(--cyan);min-height:20px}
.form-msg.error{color:var(--danger)}

/* ---------- Footer ---------- */
.site-footer{background:#071120;border-top:1px solid var(--line);padding:66px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-icon{
  width:38px;height:38px;border-radius:12px;flex:0 0 38px;
  background:linear-gradient(140deg,#2CE0C8,#1FC4AF);display:grid;place-items:center;color:#052B26;
}
.footer-brand .brand-icon svg{width:20px;height:20px;stroke:currentColor}
.footer-brand strong{font-size:.96rem;color:var(--text);font-weight:700;line-height:1.3}
.footer-desc{font-size:.87rem;color:var(--text-3);line-height:1.8;max-width:36ch}
.footer-col h4{font-size:.83rem;letter-spacing:.1em;color:var(--text-2);margin-bottom:16px;font-weight:700}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px;font-size:.87rem;color:var(--text-3)}
.footer-col a{color:var(--text-3);transition:color .18s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:.78rem;color:#5A6E82;
}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .main-nav a{padding:9px 11px;font-size:.9rem}
  .nav-search input{width:120px}
}
@media (max-width:1023px){
  :root{--section-y:64px}
  .main-nav,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions{margin-left:auto}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-side{position:static;order:-1;display:none}
  .article-side.open{display:block}
  .toc-toggle{display:flex}
  .article-panel{padding:32px 30px}
  .check-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  :root{--section-y:44px}
  .container{padding:0 18px}
  .nav-inner{height:66px;gap:12px}
  .brand-text strong{font-size:.9rem}
  .brand-text em{font-size:.66rem}
  .article-hero{padding:38px 0 36px}
  .article-hero h1{margin:12px 0 16px}
  .crumbs .current{max-width:32ch}
  .meta-row{gap:8px 14px}
  .article-panel{padding:24px 20px;border-radius:14px}
  .article-body h2{font-size:1.28rem;margin:1.8em 0 .7em}
  .article-body h3{font-size:1.08rem}
  .faq-wrap{padding:6px 20px;border-radius:18px}
  .band-head{margin-bottom:26px}
  .card-grid{grid-template-columns:1fr}
  .cta-actions .btn{width:100%}
  .sub-form{flex-direction:column}
  .sub-form input[type="text"],.sub-form input[type="email"],.sub-form .btn{width:100%;flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;margin-top:34px}
}
@media (max-width:575px){
  .check-grid{grid-template-columns:1fr}
  .article-hero::before{display:none}
  .meta-row .hide-xs{display:none}
  .card-media{aspect-ratio:16/9}
  .btn{padding:12px 20px;font-size:.9rem}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --c-bg:#0A1626;
  --c-panel:#0F1D31;
  --c-panel-hi:#132741;
  --c-cyan:#2CE0C8;
  --c-cyan-dark:#1FC4AF;
  --c-amber:#FFB45C;
  --c-text:#F2F6FA;
  --c-text-2:#A7B8CB;
  --c-text-3:#6C8095;
  --c-light:#F4F7FB;
  --c-ink:#0A1626;
  --c-ink-2:#33475E;
  --c-line:rgba(255,255,255,.08);
  --c-line-l:rgba(10,22,38,.10);
  --c-success:#3ED598;
  --c-error:#FF7A6B;
  --r-card:16px;
  --r-hero:24px;
  --r-pill:999px;
  --r-input:12px;
  --r-img:14px;
  --sh-card:0 0 0 1px rgba(255,255,255,.06),0 18px 40px rgba(2,10,22,.55);
  --sh-glow:0 8px 24px rgba(44,224,200,.28);
  --font-cn:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC",system-ui,sans-serif;
  --max:1200px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{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:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  font-feature-settings:"tnum" 1;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0 0 .6em;font-weight:700;line-height:1.28;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4vw,3rem);line-height:1.2}
h2{font-size:clamp(1.5rem,2.4vw,2rem)}
h3{font-size:1.28rem;line-height:1.35}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:var(--c-cyan);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:#7CEFDF}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
:focus-visible{outline:2px dashed var(--c-cyan);outline-offset:3px}

/* ============ 通用布局 ============ */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--light{background:var(--c-light);color:var(--c-ink)}
.section--light h2,.section--light h3{color:var(--c-ink)}
.section--light p{color:#3C4E63}
.section-head{max-width:720px;margin-bottom:44px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-block;
  font-size:.78rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-cyan);
  font-weight:700;
  margin-bottom:12px;
}
.section--light .eyebrow{color:var(--c-cyan-dark)}
.lede{font-size:1.05rem;color:var(--c-text-2)}
.section--light .lede{color:#4A5F76}
.divider{height:1px;background:var(--c-line);border:0;margin:0}
.section--light .divider{background:var(--c-line-l)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  padding:12px 26px;
  font-size:.95rem;
  font-weight:700;
  line-height:1.2;
  white-space:nowrap;
  transition:transform .2s ease,box-shadow .25s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
  cursor:pointer;
  border:1px solid transparent;
}
.btn-primary{background:var(--c-cyan);color:#04211C;box-shadow:var(--sh-glow)}
.btn-primary:hover{background:#4BEAD5;color:#04211C;transform:translateY(-2px);box-shadow:0 12px 28px rgba(44,224,200,.38)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{background:transparent;color:var(--c-text);border-color:rgba(255,255,255,.18)}
.btn-ghost:hover{color:var(--c-cyan);border-color:var(--c-cyan);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-dark{background:var(--c-ink);color:#FFFFFF;border-color:var(--c-ink)}
.btn-dark:hover{background:var(--c-cyan);color:#04211C;border-color:var(--c-cyan);transform:translateY(-2px)}
.btn-dark:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:.88rem}
.btn-block{width:100%}
.link-cyan{display:inline-flex;align-items:center;gap:6px;color:var(--c-cyan);font-weight:600;font-size:.92rem}
.link-cyan:hover{gap:10px;color:#7CEFDF}
.section--light .link-cyan{color:var(--c-cyan-dark)}
.section--light .link-cyan:hover{color:#12A08E}

/* ============ 顶部导航 ============ */
.topbar{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(10,22,38,.08);
  box-shadow:0 4px 18px rgba(10,22,38,.05);
}
.topbar.is-scrolled{box-shadow:0 10px 30px rgba(10,22,38,.12)}
.nav-wrap{display:flex;align-items:center;gap:22px;min-height:72px}
.logo{display:flex;align-items:center;gap:10px;color:var(--c-ink);flex:0 0 auto}
.logo:hover{color:var(--c-ink)}
.brand-icon{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(140deg,#0A1626,#16395C);
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-icon svg{width:22px;height:22px;stroke:var(--c-cyan)}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:1.02rem;font-weight:800;letter-spacing:-.01em}
.logo-text small{font-size:.7rem;color:#5B6B7F;font-weight:500;letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;
  padding:9px 14px;
  border-radius:var(--r-pill);
  color:#33475E;
  font-size:.93rem;
  font-weight:500;
  transition:background-color .2s ease,color .2s ease;
}
.main-nav a:hover{background:#EEF3F9;color:var(--c-ink)}
.main-nav a.active{color:var(--c-ink);font-weight:800}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  border-radius:2px;background:var(--c-cyan);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:#FFFFFF;
  border:1px solid rgba(10,22,38,.12);
  border-radius:var(--r-pill);
  padding:7px 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box:focus-within{border-color:var(--c-cyan);box-shadow:0 0 0 4px rgba(44,224,200,.18)}
.search-box svg{width:16px;height:16px;stroke:#7B8CA0;flex:0 0 auto}
.search-box input{
  border:0;outline:0;background:transparent;
  width:148px;font-size:.9rem;color:var(--c-ink);
}
.search-box input::placeholder{color:#93A2B3}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid rgba(10,22,38,.14);
  align-items:center;justify-content:center;
  background:#FFFFFF;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.drawer{
  position:fixed;top:72px;left:0;right:0;z-index:70;
  background:#FFFFFF;
  border-bottom:1px solid rgba(10,22,38,.1);
  box-shadow:0 18px 32px rgba(10,22,38,.14);
  padding:18px 24px 24px;
  transform:translateY(-14px);
  opacity:0;pointer-events:none;
  transition:transform .24s ease,opacity .24s ease;
}
.drawer.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
.drawer nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.drawer nav a{
  padding:12px 14px;border-radius:12px;color:#33475E;font-weight:600;font-size:.96rem;
}
.drawer nav a:hover{background:#EEF3F9;color:var(--c-ink)}
.drawer nav a.active{background:#E6FBF7;color:#0E8474}
.drawer .search-box{width:100%;margin-bottom:14px}
.drawer .search-box input{width:100%}

/* ============ Hero ============ */
.hero{
  position:relative;
  min-height:376px;
  display:flex;
  align-items:center;
  overflow:hidden;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,22,38,.95) 0%,rgba(10,22,38,.82) 46%,rgba(10,22,38,.62) 100%);
}
.hero::after{
  content:"";position:absolute;left:-12%;top:-40%;width:58%;height:150%;
  background:radial-gradient(circle,rgba(44,224,200,.22),transparent 62%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;width:100%;padding:64px 0}
.hero-grid{display:grid;grid-template-columns:1.45fr .85fr;gap:44px;align-items:center}
.crumb{font-size:.78rem;color:var(--c-text-3);margin-bottom:16px;letter-spacing:.02em}
.crumb a{color:var(--c-text-2)}
.crumb a:hover{color:var(--c-cyan)}
.crumb span{margin:0 8px;color:var(--c-text-3)}
.hero h1{margin-bottom:16px}
.hero h1 em{font-style:normal;color:var(--c-cyan)}
.hero-lede{font-size:1.02rem;color:var(--c-text-2);max-width:580px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin-top:26px;font-size:.78rem;color:var(--c-text-3);
}
.hero-meta i{width:1px;height:12px;background:rgba(255,255,255,.18);display:inline-block}
.glass{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.13);
  border-radius:var(--r-hero);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  box-shadow:0 18px 40px rgba(2,10,22,.5);
  padding:26px;
}
.hero-card-tag{
  display:inline-block;font-size:.74rem;letter-spacing:.06em;font-weight:700;
  color:#04211C;background:var(--c-amber);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.hero-card h3{font-size:1.1rem;margin-bottom:16px}
.info-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.info-list li{
  display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  font-size:.86rem;color:var(--c-text-2);
  padding-bottom:10px;border-bottom:1px dashed rgba(255,255,255,.1);
}
.info-list li:last-child{border-bottom:0;padding-bottom:0}
.info-list strong{color:var(--c-text);font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.tiny{font-size:.76rem;color:var(--c-text-3);margin-top:12px;text-align:center}

/* ============ 筛选 + 卡片流 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.chip{
  border:1px solid var(--c-line);
  background:rgba(255,255,255,.04);
  color:var(--c-text-2);
  border-radius:var(--r-pill);
  padding:9px 20px;
  font-size:.88rem;
  font-weight:600;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--c-cyan);color:var(--c-cyan);transform:translateY(-1px)}
.chip.is-active{background:var(--c-cyan);border-color:var(--c-cyan);color:#04211C;box-shadow:0 8px 20px rgba(44,224,200,.24)}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.gcard{
  display:flex;flex-direction:column;
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.gcard:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.5);box-shadow:0 0 0 1px rgba(44,224,200,.25),0 22px 46px rgba(2,10,22,.6)}
.gcard-media{aspect-ratio:16/9;overflow:hidden;background:var(--c-panel-hi)}
.gcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.gcard:hover .gcard-media img{transform:scale(1.04)}
.gcard-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.badge-group{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.badge{
  border:1px solid rgba(44,224,200,.4);
  color:var(--c-cyan);
  border-radius:var(--r-pill);
  padding:3px 11px;
  font-size:.74rem;
  font-weight:600;
  letter-spacing:.02em;
}
.badge--amber{background:rgba(255,180,92,.14);border-color:rgba(255,180,92,.38);color:var(--c-amber)}
.gcard h3{font-size:1.12rem;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.gcard-sum{color:var(--c-text-2);font-size:.92rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px}
.gcard-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:16px;border-top:1px solid var(--c-line);
}
.meta{font-size:.78rem;color:var(--c-text-3);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ 参数对比表 ============ */
.table-scroll{
  overflow-x:auto;
  border-radius:var(--r-card);
  box-shadow:0 12px 34px rgba(10,22,38,.10);
  -webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:760px;border-collapse:collapse;background:#FFFFFF}
table.compare th,table.compare td{
  padding:15px 20px;text-align:left;font-size:.9rem;
  border-bottom:1px solid rgba(10,22,38,.08);
  color:#33475E;vertical-align:top;
}
table.compare thead th{background:var(--c-ink);color:#F2F6FA;font-weight:600;white-space:nowrap}
table.compare tbody th{font-weight:700;color:var(--c-ink);white-space:nowrap}
table.compare tbody tr:nth-child(even){background:#F8FAFD}
table.compare tbody tr:hover{background:#EFF6F8}
.tip-row{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:22px;
}
.tip{
  flex:1 1 240px;
  background:#FFFFFF;border:1px solid var(--c-line-l);border-radius:14px;
  padding:16px 18px;font-size:.86rem;color:#3C4E63;
}
.tip strong{display:block;color:var(--c-ink);margin-bottom:4px;font-size:.92rem}

/* ============ 步骤流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px 22px;
  transition:transform .28s ease,border-color .28s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(44,224,200,.4)}
.step-num{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(44,224,200,.12);
  color:var(--c-cyan);
  font-weight:800;font-size:.95rem;
  margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:1.05rem;margin-bottom:8px}
.step p{font-size:.88rem;color:var(--c-text-2);margin:0}
.check-list{display:grid;gap:12px;margin-top:8px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:.92rem;color:var(--c-text-2);
}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:50%;
  background:rgba(44,224,200,.14);
  box-shadow:inset 0 0 0 1px rgba(44,224,200,.5);
  background-image:linear-gradient(45deg,transparent 44%,var(--c-cyan) 44%,var(--c-cyan) 56%,transparent 56%);
  background-repeat:no-repeat;background-size:10px 10px;background-position:center;
}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.panel-note{
  background:var(--c-panel-hi);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px;
}
.panel-note h3{margin-bottom:14px}
.panel-note p{color:var(--c-text-2);font-size:.92rem}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:#FFFFFF;
  border:1px solid var(--c-line-l);
  border-radius:var(--r-card);
  box-shadow:0 10px 26px rgba(10,22,38,.06);
  overflow:hidden;
  transition:box-shadow .25s ease,border-color .25s ease;
}
.faq-item:hover{border-color:rgba(44,224,200,.6)}
.faq-item.is-open{box-shadow:0 16px 34px rgba(10,22,38,.10)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;padding:20px 24px;text-align:left;
  font-size:1rem;font-weight:700;color:var(--c-ink);
}
.faq-icon{
  flex:0 0 auto;position:relative;width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(10,22,38,.18);
  transition:transform .3s ease,background-color .3s ease,border-color .3s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-ink);
  transform:translate(-50%,-50%);border-radius:2px;
  transition:opacity .3s ease,background-color .3s ease;
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px}
.faq-item.is-open .faq-icon{background:var(--c-cyan);border-color:var(--c-cyan);transform:rotate(180deg)}
.faq-item.is-open .faq-icon::before{background:#04211C}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a-inner{padding:0 24px 22px;color:#3C4E63;font-size:.94rem;line-height:1.9}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;
  padding:92px 0;
  background:
    radial-gradient(900px 420px at 50% -10%,rgba(44,224,200,.20),transparent 66%),
    linear-gradient(180deg,#0A1626 0%,#0E1E36 100%);
  overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-8%;bottom:-30%;width:44%;height:110%;
  background:radial-gradient(circle,rgba(255,180,92,.10),transparent 62%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:760px;margin:0 auto;text-align:center}
.cta-inner h2{margin-bottom:14px}
.cta-inner p{color:var(--c-text-2)}
.subscribe{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:30px;
}
.subscribe input[type="email"]{
  flex:1 1 300px;max-width:360px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  padding:13px 18px;color:var(--c-text);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.subscribe input[type="email"]::placeholder{color:var(--c-text-3)}
.subscribe input[type="email"]:focus{outline:none;border-color:var(--c-cyan);box-shadow:0 0 0 4px rgba(44,224,200,.16)}
.agree{
  display:flex;align-items:center;justify-content:center;gap:8px;
  margin-top:18px;font-size:.82rem;color:var(--c-text-3);
}
.agree input{accent-color:var(--c-cyan);width:16px;height:16px}

/* ============ 页脚 ============ */
.site-footer{
  background:#08111E;
  border-top:1px solid var(--c-line);
  padding:72px 0 30px;
  color:var(--c-text-2);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand strong{color:var(--c-text);font-size:1.02rem;font-weight:800}
.footer-desc{font-size:.88rem;color:var(--c-text-3);line-height:1.8;max-width:320px}
.footer-col h4{font-size:.92rem;color:var(--c-text);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:10px}
.footer-col li{font-size:.86rem;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.footer-col a{color:var(--c-text-2);font-size:.88rem}
.footer-col a:hover{color:var(--c-cyan)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding-top:24px;font-size:.8rem;color:var(--c-text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .main-nav a{padding:9px 10px;font-size:.9rem}
  .search-box input{width:120px}
}
@media (max-width:1024px){
  .section{padding:76px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero{min-height:0}
  .hero-inner{padding:56px 0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .main-nav{display:none}
  .search-box{display:none}
  .menu-toggle{display:inline-flex}
  .nav-actions{margin-left:auto}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .steps{grid-template-columns:1fr}
  .hero-lede{font-size:.96rem}
  .hero-actions .btn{flex:1 1 100%}
  .cta-band{padding:64px 0}
  .site-footer{padding:56px 0 24px}
}
@media (max-width:576px){
  .logo-text small{display:none}
  .logo-text strong{font-size:.94rem}
  .gcard-media{height:190px;aspect-ratio:auto}
  .badge-group{gap:6px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
  .section-head{margin-bottom:30px}
  .subscribe input[type="email"]{flex:1 1 100%;max-width:none}
}