/* roulang page: index */
:root{
  --bg:#0A0C14;
  --bg-2:#11141F;
  --bg-3:#171B29;
  --line:rgba(255,255,255,.08);
  --brand:#2BE3A7;
  --brand-dark:#17C48C;
  --brand-weak:rgba(43,227,167,.12);
  --accent:#7B5CFF;
  --accent-weak:rgba(123,92,255,.16);
  --warn:#FF9A3C;
  --t1:#F2F5FA;
  --t2:#A8B0C2;
  --t3:#6B7386;
  --r-card:10px;
  --r-btn:8px;
  --shadow:0 2px 6px rgba(0,0,0,.35);
  --shadow-hover:0 6px 18px rgba(43,227,167,.18);
  --sp-section:88px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.4}
p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--bg-2)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{
  font-size:30px;
  line-height:1.38;
  padding-left:16px;
  position:relative;
  margin-bottom:14px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.22em;bottom:.22em;width:3px;
  background:var(--brand);border-radius:2px;
}
.section-head p{color:var(--t2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;
  color:var(--brand);
  border:1px solid rgba(43,227,167,.35);
  background:var(--brand-weak);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:20px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#06120D}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:0 6px 18px rgba(43,227,167,.28)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:transparent;color:var(--t1);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.link-more{color:var(--brand);font-size:14px;text-decoration:underline;text-underline-offset:3px;transition:color .2s}
.link-more:hover{color:var(--accent)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,20,.94);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:0}
.logo-mark{
  width:32px;height:32px;flex:0 0 auto;
  display:grid;place-items:center;
  border:1px solid var(--brand);border-radius:8px;
  color:var(--brand);
}
.logo-mark svg{width:18px;height:18px}
.logo-text em{font-style:normal;color:var(--brand)}
.site-nav{display:flex;align-items:center;gap:30px}
.site-nav ul{display:flex;align-items:center;gap:26px;list-style:none}
.site-nav ul a{
  display:flex;align-items:center;height:68px;
  font-size:15px;color:var(--t2);
  position:relative;
  transition:color .2s ease;
}
.site-nav ul a:hover{color:var(--brand)}
.site-nav ul a.is-active{color:var(--t1);font-weight:600}
.site-nav ul a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand);
}
.nav-cta{height:38px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;
  place-items:center;gap:5px;
  border:1px solid var(--line);border-radius:8px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 96px;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero::after{
  content:"";position:absolute;width:640px;height:640px;right:-180px;top:-220px;
  background:radial-gradient(circle,rgba(43,227,167,.14),transparent 62%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero-copy h1{font-size:40px;line-height:1.32;margin-bottom:20px}
.hero-sub{font-size:17px;color:var(--t2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin-top:28px}
.trust-row li{
  font-size:12.5px;color:var(--t2);
  padding:6px 13px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg-2);
}
.hero-media{position:relative;z-index:2}
.hero-media > img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-2);
}
.hero-media::before{
  content:"";position:absolute;inset:0;border-radius:var(--r-card);z-index:2;pointer-events:none;
  background:linear-gradient(90deg,var(--bg) 0%,rgba(10,12,20,.45) 42%,rgba(10,12,20,0) 72%);
}
.hero-float{
  position:absolute;right:-16px;bottom:-30px;width:46%;margin:0;z-index:3;
  border-radius:var(--r-card);overflow:hidden;
  border:1px solid rgba(43,227,167,.35);
  background:var(--bg-3);
  box-shadow:0 14px 34px rgba(0,0,0,.5);
}
.hero-float img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- 疑问区 ---------- */
.problem-list{list-style:none;display:grid;gap:12px}
.problem-list li{
  display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:18px;
  padding:18px 22px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s ease,transform .2s ease;
}
.problem-list li:hover{border-color:rgba(43,227,167,.4);transform:translateX(2px)}
.q-mark{
  width:34px;height:34px;border-radius:8px;
  display:grid;place-items:center;
  background:var(--brand-weak);color:var(--brand);
  border:1px solid rgba(43,227,167,.3);
  font-weight:800;font-size:16px;
}
.q-body h3{font-size:16.5px;margin-bottom:2px}
.q-body p{font-size:14px;color:var(--t2)}

/* ---------- 方案卡片 ---------- */
.solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.sol-card{
  position:relative;
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;display:flex;flex-direction:column;gap:14px;
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.sol-card:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.sol-card--wide{grid-column:span 2}
.sol-card--feature{
  border-color:var(--brand);
  background:linear-gradient(180deg,rgba(43,227,167,.07),rgba(23,27,41,0) 62%),var(--bg-3);
}
.sol-icon{
  width:44px;height:44px;border-radius:10px;
  display:grid;place-items:center;
  border:1px solid rgba(43,227,167,.35);
  background:var(--brand-weak);
  color:var(--brand);
}
.sol-icon svg{width:22px;height:22px}
.sol-card h3{font-size:19px}
.sol-card p{font-size:14.5px;color:var(--t2)}
.sol-card .link-more{margin-top:auto}

/* ---------- 数据区 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat{
  position:relative;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px 22px;
}
.stat::after{
  content:"";position:absolute;top:0;right:0;width:26px;height:26px;
  background:var(--bg);
  clip-path:polygon(100% 0,0 0,100% 100%);
}
.stat-num{
  font-size:44px;font-weight:800;color:var(--brand);line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:13.5px;color:var(--t2);margin-top:8px}
.stats-note{font-size:12.5px;color:var(--t3);margin-top:18px}

/* ---------- 分类入口 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cat-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.cat-card:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--bg-2)}
.cat-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.cat-body h3{font-size:19px}
.cat-body p{font-size:14.5px;color:var(--t2)}
.cat-body .link-more{margin-top:auto}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .25s ease,box-shadow .25s ease,transform .25s ease;
}
.news-card:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--bg-2)}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-badge{
  align-self:flex-start;font-size:11px;line-height:1.6;
  padding:3px 11px;border-radius:999px;
  color:#B9A6FF;background:var(--accent-weak);
  border:1px solid rgba(123,92,255,.4);
}
.news-title{font-size:17px;line-height:1.6}
.news-title a{transition:color .2s}
.news-title a:hover{color:var(--brand)}
.news-excerpt{
  font-size:14px;color:var(--t2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{
  margin-top:auto;padding-top:12px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--t3);
}
.news-empty{
  padding:64px 24px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-card);background:var(--bg-2);
}
.news-empty p{color:var(--t2);margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:0 22px;transition:background .2s ease,border-color .2s ease;
}
.faq-item[open]{background:var(--bg-3);border-color:rgba(43,227,167,.4);box-shadow:inset 3px 0 0 var(--brand)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0;font-size:17px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:6px;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--brand);
  font-size:16px;line-height:1;
}
.faq-item[open] .faq-icon{background:var(--brand-weak);border-color:var(--brand)}
.faq-item[open] .faq-icon::before{content:"−"}
.faq-icon::before{content:"+"}
.faq-body{padding:0 0 20px;color:var(--t2);font-size:15.5px}

/* ---------- 表单 ---------- */
.form-band{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:44px;
}
.form-band h2{font-size:26px;margin-bottom:14px}
.form-band .form-copy p{color:var(--t2);font-size:15px;margin-bottom:16px}
.form-points{list-style:none;display:grid;gap:10px}
.form-points li{position:relative;padding-left:18px;font-size:14.5px;color:var(--t2)}
.form-points li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  background:var(--brand);border-radius:1px;
}
.ask-form{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:13.5px;color:var(--t2)}
.field input,.field select{
  height:44px;padding:0 14px;
  background:var(--bg-3);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--t1);
  appearance:none;-webkit-appearance:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,var(--t2) 50%),linear-gradient(135deg,var(--t2) 50%,transparent 50%);
  background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
  padding-right:40px;
}
.field input:focus,.field select:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,227,167,.16);
}
.field input.is-error,.field select.is-error{
  border-color:var(--warn);box-shadow:0 0 0 3px rgba(255,154,60,.14);
}
.form-note{font-size:12.5px;color:var(--t3)}
.form-note.is-error{color:var(--warn)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg);padding-top:56px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t2);max-width:320px}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--t1)}
.footer-col ul{list-style:none;display:grid;gap:10px}
.footer-col a,.footer-col li{font-size:14px;color:var(--t2);transition:color .2s ease}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:44px;padding:20px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--t3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-copy h1{font-size:36px}
}
@media (max-width:991px){
  :root{--sp-section:64px}
  .nav-toggle{display:grid}
  .site-nav{
    position:fixed;top:68px;right:0;
    width:82%;height:calc(100vh - 68px);
    background:var(--bg-2);
    border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 0 24px;
    transform:translateX(102%);
    transition:transform .28s ease;
    overflow-y:auto;z-index:90;
  }
  .site-nav.is-open{transform:translateX(0)}
  .site-nav ul{flex-direction:column;gap:0;align-items:stretch}
  .site-nav ul li{display:flex;height:52px;border-bottom:1px solid var(--line)}
  .site-nav ul a{width:100%;height:52px;padding:0 20px;font-size:16px}
  .site-nav ul a.is-active{color:var(--brand)}
  .site-nav ul a.is-active::after{display:none}
  .nav-cta{width:calc(100% - 40px);margin:18px 20px 0}
  .hero{padding:56px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-copy h1{font-size:32px}
  .hero-float{right:12px;bottom:-24px;width:44%}
  .solution-grid{grid-template-columns:repeat(2,1fr)}
  .sol-card--wide{grid-column:span 2}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .form-band{grid-template-columns:1fr;gap:32px;padding:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  :root{--sp-section:56px}
  .container{padding:0 16px}
  .hero-copy h1{font-size:28px;line-height:1.38}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-float{width:52%;right:8px;bottom:-18px}
  .section-head h2{font-size:24px}
  .problem-list li{grid-template-columns:34px 1fr;gap:14px;padding:16px}
  .problem-list li .link-more{grid-column:2}
  .solution-grid{grid-template-columns:1fr}
  .sol-card--wide{grid-column:span 1}
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-num{font-size:34px}
  .cat-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .form-band{padding:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --bg:#0A0C14;
  --bg-panel:#11141F;
  --bg-card:#171B29;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#2BE3A7;
  --brand-hover:#17C48C;
  --brand-weak:rgba(43,227,167,.12);
  --accent:#7B5CFF;
  --accent-weak:rgba(123,92,255,.14);
  --warn:#FF9A3C;
  --warn-weak:rgba(255,154,60,.12);
  --text:#F2F5FA;
  --text-2:#A8B0C2;
  --text-3:#6B7386;
  --r-card:10px;
  --r-btn:8px;
  --shadow:0 2px 6px rgba(0,0,0,.35);
  --shadow-hover:0 6px 18px rgba(43,227,167,.18);
  --gap:24px;
  --section-y:88px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--text);}
h1{font-size:40px;font-weight:800;}
h2{font-size:30px;}
h3{font-size:22px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section-y) 0;}
.section-panel{background:var(--bg-panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,20,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:17px;letter-spacing:0;}
.logo:hover{color:var(--text);}
.logo-mark{width:34px;height:34px;border:1px solid var(--brand);border-radius:9px;display:grid;place-items:center;color:var(--brand);flex:0 0 auto;background:var(--brand-weak);}
.logo-mark svg{width:20px;height:20px;}
.logo-text em{font-style:normal;color:var(--brand);}
.site-nav{display:flex;align-items:center;gap:28px;}
.site-nav ul{display:flex;align-items:center;gap:26px;}
.site-nav ul a{
  position:relative;display:inline-block;padding:22px 0;font-size:15px;color:var(--text-2);
}
.site-nav ul a:hover{color:var(--brand);}
.site-nav ul a.is-active{color:var(--brand);}
.site-nav ul a.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--brand);border-radius:2px;
}
.nav-cta{white-space:nowrap;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:9px;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .18s ease;line-height:1.4;
}
.btn-primary{background:var(--brand);color:#06120D;}
.btn-primary:hover{background:var(--brand-hover);color:#06120D;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text);}
.btn-ghost:hover{border-color:var(--accent);color:var(--text);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--bg-panel);
  border-bottom:1px solid var(--line);
  padding:56px 0 60px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px;}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--text-2);}
.hero-inner h1{max-width:640px;}
.hero-sub{margin-top:16px;font-size:17px;color:var(--text-2);max-width:560px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.hero-art{position:relative;}
.hero-art img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);opacity:.34;filter:saturate(.85);
}
.hero-art::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(17,20,31,.1),rgba(17,20,31,.85));
  pointer-events:none;
}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{display:flex;align-items:center;gap:14px;}
.section-head h2::before{content:"";width:3px;height:26px;background:var(--brand);border-radius:2px;flex:0 0 auto;}
.section-head p{margin-top:14px;color:var(--text-2);}
.eyebrow{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;
  background:var(--brand-weak);color:var(--brand);margin-bottom:14px;font-weight:600;
}

/* ---------- 简介 + 要点 ---------- */
.intro-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:40px;align-items:start;}
.intro-text p{color:var(--text-2);margin-top:16px;}
.intro-text p:first-of-type{margin-top:0;}
.points-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow);
}
.points-card h3{font-size:18px;margin-bottom:18px;}
.points-card li{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line);}
.points-card li:first-of-type{border-top:none;padding-top:0;}
.point-num{
  font-size:13px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;
  flex:0 0 auto;padding-top:2px;
}
.point-body strong{display:block;font-size:15px;color:var(--text);margin-bottom:4px;}
.point-body span{font-size:14px;color:var(--text-2);line-height:1.7;}

/* ---------- 图文交替 ---------- */
.figure-row{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center;}
.figure-row + .figure-row{margin-top:64px;}
.figure-row.is-reverse .figure-media{order:2;}
.figure-media{position:relative;}
.figure-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-panel);
}
.figure-media figcaption{font-size:12.5px;color:var(--text-3);margin-top:10px;text-align:center;}
.figure-body h3{margin-bottom:14px;}
.figure-body p{color:var(--text-2);}
.figure-list{margin-top:20px;display:grid;gap:12px;}
.figure-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2);}
.figure-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--brand);border-radius:1px;
}

/* ---------- 步骤时间线 ---------- */
.steps{max-width:880px;margin:0 auto;}
.step{position:relative;padding-left:76px;padding-bottom:38px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:22px;top:50px;bottom:6px;width:1px;
  background:linear-gradient(180deg,var(--brand),rgba(43,227,167,.05));
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--brand);background:var(--bg);color:var(--brand);
  display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.step-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.step-card:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.step-card h3{font-size:19px;margin-bottom:10px;}
.step-card p{color:var(--text-2);font-size:15px;}
.step-tip{
  display:inline-block;margin-top:14px;padding:4px 12px;border-radius:999px;
  font-size:12px;background:var(--brand-weak);color:var(--brand);
}
.step-tip.warn{background:var(--warn-weak);color:var(--warn);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;display:grid;gap:12px;}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);border-left:3px solid transparent;
  border-radius:var(--r-card);transition:border-color .18s ease,background .18s ease;
}
.faq-item[open]{background:var(--bg-panel);border-left-color:var(--brand);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:16px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"＋";font-size:18px;color:var(--brand);font-weight:400;flex:0 0 auto;line-height:1;
}
.faq-item[open] summary::after{content:"－";}
.faq-item summary:hover{color:var(--brand);}
.faq-body{padding:0 24px 22px;color:var(--text-2);font-size:15px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  border:1px solid var(--brand);border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(43,227,167,.10),rgba(123,92,255,.08) 70%,transparent);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band h2{font-size:26px;}
.cta-band p{margin-top:12px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}

/* ---------- 相关资讯 ---------- */
.news-list{display:grid;gap:16px;}
.news-item{
  display:grid;grid-template-columns:200px 1fr auto;gap:22px;align-items:center;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px;transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.news-item:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:8px;background:var(--bg-panel);}
.news-body h3{font-size:18px;margin-top:8px;}
.news-body h3 a{color:var(--text);}
.news-body h3 a:hover{color:var(--brand);}
.news-body p{margin-top:8px;font-size:14px;color:var(--text-2);}
.news-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);}
.badge{
  display:inline-block;padding:3px 11px;border-radius:999px;font-size:11.5px;font-weight:600;
  background:var(--accent-weak);color:var(--accent);
}
.news-link{font-size:14px;font-weight:600;white-space:nowrap;}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg);padding:64px 0 28px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);max-width:320px;}
.footer-col h4{font-size:15px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:11px;}
.footer-col li{font-size:14px;color:var(--text-2);}
.footer-col a{color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
}
@media (max-width:991px){
  :root{--section-y:64px;}
  h1{font-size:32px;}
  h2{font-size:26px;}
  .hero-inner{grid-template-columns:1fr;gap:32px;}
  .hero-art{max-width:520px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .figure-row{grid-template-columns:1fr;gap:26px;}
  .figure-row.is-reverse .figure-media{order:0;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:899px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;top:68px;right:0;bottom:0;width:82%;max-width:360px;
    background:var(--bg-panel);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 28px;
    transform:translateX(102%);transition:transform .26s ease;overflow-y:auto;
  }
  .site-nav.is-open{transform:translateX(0);}
  .site-nav ul{flex-direction:column;align-items:stretch;gap:0;}
  .site-nav ul li{border-bottom:1px solid var(--line);}
  .site-nav ul a{display:block;padding:16px 0;font-size:16px;}
  .site-nav ul a.is-active::after{display:none;}
  .site-nav ul a.is-active{color:var(--brand);}
  .nav-cta{margin-top:24px;width:100%;}
}
@media (max-width:767px){
  :root{--section-y:56px;}
  body{font-size:16px;}
  h1{font-size:28px;}
  h2{font-size:24px;}
  h3{font-size:20px;}
  .page-hero{padding:40px 0 44px;}
  .hero-actions .btn{width:100%;}
  .step{padding-left:60px;padding-bottom:30px;}
  .step-num{width:40px;height:40px;font-size:13px;}
  .step::before{left:19px;top:44px;}
  .news-item{grid-template-columns:1fr;gap:16px;}
  .news-link{justify-self:flex-start;}
  .cta-band{padding:28px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .section-head h2::before{height:22px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
}

/* roulang page: article */
:root{
  --bg:#0A0C14;
  --bg-panel:#11141F;
  --bg-card:#171B29;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#2BE3A7;
  --brand-hover:#17C48C;
  --brand-soft:rgba(43,227,167,.12);
  --accent:#7B5CFF;
  --accent-soft:rgba(123,92,255,.14);
  --warn:#FF9A3C;
  --warn-soft:rgba(255,154,60,.12);
  --t1:#F2F5FA;
  --t2:#A8B0C2;
  --t3:#6B7386;
  --r-card:10px;
  --r-btn:8px;
  --r-pill:999px;
  --shadow:0 2px 6px rgba(0,0,0,.35);
  --shadow-hover:0 6px 18px rgba(43,227,167,.18);
  --gap:24px;
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,border-color .18s ease;}
a:hover{color:var(--accent);}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,12,20,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(6px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--t1);font-weight:700;}
.logo:hover{color:var(--t1);}
.logo-mark{
  width:34px;height:34px;border:1px solid var(--brand);border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand);
  background:var(--brand-soft);flex:0 0 auto;
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{font-size:17px;line-height:1.2;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--brand);}
.site-nav{display:flex;align-items:center;gap:28px;}
.site-nav ul{display:flex;align-items:center;gap:26px;}
.site-nav ul li a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--t2);
}
.site-nav ul li a::after{
  content:"";position:absolute;left:0;right:auto;bottom:0;width:0;height:2px;
  background:var(--brand);transition:width .2s ease;
}
.site-nav ul li a:hover{color:var(--brand);}
.site-nav ul li a:hover::after,
.site-nav ul li a.is-active::after{width:100%;}
.site-nav ul li a.is-active{color:var(--brand);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand);border-radius:2px;}

/* ---------- buttons / badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,background-color .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#06120D;border:1px solid var(--brand);}
.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover);color:#06120D;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:none;box-shadow:none;}
.btn-ghost{background:transparent;color:var(--t1);border:1px solid var(--line-strong);}
.btn-ghost:hover{color:var(--t1);border-color:var(--accent);transform:translateY(-1px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.02em;
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(43,227,167,.28);
}
.badge-accent{background:var(--accent-soft);color:#B7A6FF;border-color:rgba(123,92,255,.35);}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- article layout ---------- */
.article-shell{padding:32px 0 0;}
.breadcrumb{margin-bottom:16px;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--t3);}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--brand);}
.crumb-current{color:var(--t2);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.back-row{margin-top:14px;}

.layout-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start;padding:32px 0 var(--sec);}
.article-head{padding-bottom:20px;border-bottom:1px solid var(--line);}
.article-head h1{font-size:40px;line-height:1.28;}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--t3);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--t3);}
.article-cover{margin:28px 0 0;}
.article-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--bg-panel);
}
.article-cover figcaption{margin-top:10px;font-size:12.5px;color:var(--t3);text-align:center;}

.article-body{
  max-width:760px;margin:35px auto 0;
  font-size:17px;line-height:1.9;color:#DDE3EE;
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:24px;line-height:1.4;margin:40px 0 16px;padding-left:14px;
  border-left:3px solid var(--brand);
}
.article-body h3{font-size:20px;line-height:1.5;margin:28px 0 12px;color:var(--t1);}
.article-body h4{font-size:17px;margin:22px 0 10px;}
.article-body a{text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body img{margin:22px 0;border-radius:var(--r-card);border:1px solid var(--line);}
.article-body blockquote{
  margin:22px 0;padding:16px;background:var(--bg-panel);
  border-left:3px solid var(--brand);border-radius:0 var(--r-card) var(--r-card) 0;color:var(--t2);
}
.article-body ul{margin:0 0 18px;padding-left:4px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:1px;background:var(--brand);
}
.article-body ol{margin:0 0 18px;counter-reset:olc;padding-left:4px;}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;counter-increment:olc;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.05em;
  color:var(--brand);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
}
.article-body table{margin:22px 0;font-size:15px;border:1px solid var(--line);}
.article-body th,.article-body td{padding:10px 14px;border:1px solid var(--line);text-align:left;}
.article-body th{background:var(--bg-panel);color:var(--t1);font-weight:600;}
.article-body td{color:var(--t2);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

.article-foot{margin-top:40px;}
.article-foot .divider{height:1px;background:var(--line);margin:24px 0;}
.inline-cta{
  max-width:760px;margin:36px auto 0;padding:20px 22px;display:flex;gap:20px;
  align-items:center;justify-content:space-between;flex-wrap:wrap;
  background:var(--bg-panel);border:1px solid var(--line);border-left:3px solid var(--brand);
  border-radius:var(--r-card);
}
.inline-cta strong{display:block;font-size:16px;color:var(--t1);}
.inline-cta span{font-size:13px;color:var(--t3);}

.empty-state{
  max-width:760px;margin:0 auto;padding:56px 24px;text-align:center;
  background:var(--bg-panel);border:1px solid var(--line);border-radius:var(--r-card);
}
.empty-state .empty-mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:12px;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--brand);background:var(--bg-card);
}
.empty-state h2{font-size:20px;margin-bottom:8px;border:0;padding:0;}
.empty-state p{color:var(--t3);font-size:14px;margin-bottom:20px;}

/* ---------- sidebar ---------- */
.sidebar{position:sticky;top:88px;display:grid;gap:20px;}
.side-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow);
}
.side-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-card h3::before{content:"";width:3px;height:14px;background:var(--brand);border-radius:2px;}
.hot-list li{padding:11px 0;border-top:1px solid var(--line);}
.hot-list li:first-child{border-top:0;padding-top:0;}
.hot-list a{display:block;font-size:14px;color:var(--t2);line-height:1.6;}
.hot-list a:hover{color:var(--brand);}
.hot-list .rank{color:var(--brand);font-weight:700;margin-right:8px;font-variant-numeric:tabular-nums;}
.side-cta{background:var(--bg-panel);border-color:rgba(43,227,167,.3);}
.side-cta p{font-size:13.5px;color:var(--t2);margin-bottom:16px;line-height:1.75;}
.side-cta .btn{width:100%;}

/* ---------- related ---------- */
.related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:20px;}
.related-item{
  display:flex;gap:14px;align-items:center;padding:14px;background:var(--bg-card);
  border:1px solid var(--line);border-radius:var(--r-card);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.related-item:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.related-item img{width:120px;height:76px;object-fit:cover;border-radius:8px;border:1px solid var(--line);flex:0 0 auto;}
.related-item h4{font-size:14.5px;line-height:1.6;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-item time{font-size:12.5px;color:var(--t3);}

/* ---------- cta band ---------- */
.cta-band{
  margin-bottom:var(--sec);padding:28px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(43,227,167,.10),rgba(123,92,255,.10));
  border:1px solid rgba(43,227,167,.3);border-radius:var(--r-card);
}
.cta-band h2{font-size:22px;margin-bottom:6px;}
.cta-band p{font-size:14px;color:var(--t2);}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg);padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--t3);line-height:1.8;max-width:300px;}
.footer-col h4{font-size:14px;color:var(--t1);margin-bottom:14px;}
.footer-col ul li{margin-bottom:9px;font-size:14px;color:var(--t3);}
.footer-col ul li a{color:var(--t2);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--t3);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .article-head h1{font-size:34px;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;top:68px;right:0;bottom:0;width:82%;max-width:360px;
    background:var(--bg-panel);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 28px;
    transform:translateX(102%);transition:transform .26s ease;overflow-y:auto;
  }
  .site-nav.is-open{transform:translateX(0);}
  .site-nav ul{flex-direction:column;align-items:stretch;gap:0;}
  .site-nav ul li{border-bottom:1px solid var(--line);}
  .site-nav ul li a{display:block;padding:15px 0;font-size:15.5px;}
  .site-nav ul li a::after{display:none;}
  .site-nav ul li a.is-active{color:var(--brand);}
  .nav-cta{margin-top:22px;width:100%;}
  .layout-grid{grid-template-columns:minmax(0,1fr);gap:32px;padding-bottom:56px;}
  .sidebar{position:static;}
  .related-list{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  .article-head h1{font-size:28px;line-height:1.35;}
  .article-body{font-size:16.5px;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .related-list{grid-template-columns:1fr;}
  .cta-band{padding:22px;}
  .cta-band .btn{width:100%;}
  .crumb-current{max-width:180px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text{font-size:15.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .inline-cta{flex-direction:column;align-items:flex-start;}
  .inline-cta .btn{width:100%;}
  .related-item img{width:96px;height:64px;}
}

/* roulang page: category2 */
:root{
  --bg:#0A0C14;
  --bg-section:#11141F;
  --bg-card:#171B29;
  --bg-card-2:#1C2133;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#2BE3A7;
  --brand-hover:#17C48C;
  --brand-weak:rgba(43,227,167,.12);
  --brand-ink:#06120D;
  --accent:#7B5CFF;
  --accent-weak:rgba(123,92,255,.14);
  --warn:#FF9A3C;
  --warn-weak:rgba(255,154,60,.12);
  --text:#F2F5FA;
  --text-2:#A8B0C2;
  --text-3:#6B7386;
  --radius:10px;
  --radius-sm:8px;
  --shadow:0 2px 6px rgba(0,0,0,.35);
  --shadow-hover:0 6px 18px rgba(43,227,167,.18);
  --space-section:88px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}

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

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

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}

:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:4px;
}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);
  color:var(--brand-ink);
  border-color:var(--brand);
  box-shadow:var(--shadow);
}
.btn-primary:hover{
  background:var(--brand-hover);
  border-color:var(--brand-hover);
  color:var(--brand-ink);
  transform:translateY(-1px);
  box-shadow:var(--shadow-hover);
}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  border-color:var(--line-strong);
}
.btn-ghost:hover{
  color:var(--text);
  border-color:var(--accent);
  transform:translateY(-1px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:24px;
  padding:0 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  background:var(--brand-weak);
  color:var(--brand);
  border:1px solid rgba(43,227,167,.24);
}
.badge-accent{
  background:var(--accent-weak);
  color:#B7A6FF;
  border-color:rgba(123,92,255,.3);
}
.badge-warn{
  background:var(--warn-weak);
  color:#FFC089;
  border-color:rgba(255,154,60,.32);
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(10,12,20,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  font-weight:800;
  font-size:17px;
  letter-spacing:0;
}
.logo:hover{color:var(--text);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:9px;
  border:1px solid rgba(43,227,167,.45);
  color:var(--brand);
  background:var(--brand-weak);
  flex:0 0 auto;
}
.logo-mark svg{width:20px;height:20px;display:block;}
.logo-text em{font-style:normal;color:var(--brand);}

.site-nav{
  display:flex;
  align-items:center;
  gap:28px;
}
.site-nav ul{
  display:flex;
  align-items:center;
  gap:26px;
}
.site-nav ul a{
  position:relative;
  display:inline-block;
  padding:22px 0;
  color:var(--text-2);
  font-size:15px;
  font-weight:500;
}
.site-nav ul a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:14px;
  height:2px;
  background:transparent;
  border-radius:2px;
  transition:background .2s ease;
}
.site-nav ul a:hover{color:var(--brand);}
.site-nav ul a.is-active{color:var(--brand);font-weight:600;}
.site-nav ul a.is-active::after{background:var(--brand);}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;
  height:42px;
  padding:0 9px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:var(--brand);
  border-radius:2px;
}
.nav-backdrop{
  position:fixed;
  inset:0;
  background:rgba(6,8,14,.72);
  opacity:0;
  pointer-events:none;
  transition:opacity .25s ease;
  z-index:70;
}
.nav-backdrop.is-open{opacity:1;pointer-events:auto;}

/* ---------- 页面 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--bg-section);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.page-hero-bg{
  position:absolute;
  top:0;
  right:0;
  width:52%;
  height:100%;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  opacity:.28;
  mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.9) 55%,rgba(0,0,0,.9) 100%);
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.9) 55%,rgba(0,0,0,.9) 100%);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;
  z-index:2;
  padding-top:44px;
  padding-bottom:52px;
  max-width:760px;
}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .current{color:var(--text-2);}

.page-hero h1{
  font-size:40px;
  line-height:1.24;
  font-weight:800;
  letter-spacing:0;
  margin-bottom:16px;
}
.page-hero-sub{
  font-size:17px;
  color:var(--text-2);
  max-width:620px;
  margin-bottom:26px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}

/* ---------- 板块 ---------- */
.section{
  padding:var(--space-section) 0;
}
.section-alt{
  background:var(--bg-section);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{
  max-width:720px;
  margin-bottom:44px;
}
.section-title{
  position:relative;
  padding-left:14px;
  font-size:30px;
  line-height:1.34;
  font-weight:800;
  margin-bottom:14px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  width:3px;
  height:.86em;
  background:var(--brand);
  border-radius:2px;
}
.section-desc{
  color:var(--text-2);
  font-size:16px;
}

/* ---------- 要点卡片 ---------- */
.lead-grid{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:44px;
  align-items:start;
}
.lead-copy p{
  color:var(--text-2);
  font-size:16.5px;
  margin-bottom:18px;
}
.lead-copy p:last-child{margin-bottom:0;}
.lead-copy strong{color:var(--text);font-weight:600;}

.point-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:10px 22px;
  box-shadow:var(--shadow);
}
.point-item{
  display:flex;
  gap:16px;
  padding:20px 0;
  border-bottom:1px solid var(--line);
}
.point-item:last-child{border-bottom:0;}
.point-num{
  flex:0 0 auto;
  font-size:14px;
  font-weight:800;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
  padding-top:3px;
}
.point-body h3{
  font-size:16px;
  font-weight:700;
  margin-bottom:6px;
}
.point-body p{
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.75;
}

/* ---------- 风险对照双栏 ---------- */
.compare-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
  align-items:stretch;
}
.compare-col{
  display:flex;
  flex-direction:column;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:box-shadow .25s ease,border-color .25s ease;
}
.compare-col.risk{border-color:rgba(255,154,60,.32);}
.compare-col.risk:hover{border-color:var(--warn);box-shadow:0 6px 18px rgba(255,154,60,.16);}
.compare-col.safe{border-color:rgba(43,227,167,.3);}
.compare-col.safe:hover{border-color:var(--brand);box-shadow:var(--shadow-hover);}
.compare-head{
  display:flex;
  align-items:center;
  gap:10px;
  padding-bottom:16px;
  margin-bottom:18px;
  border-bottom:1px solid var(--line);
}
.compare-head h3{font-size:20px;font-weight:800;}
.compare-col.risk .compare-head h3{color:#FFC089;}
.compare-col.safe .compare-head h3{color:var(--brand);}

.compare-list li{
  position:relative;
  padding-left:24px;
  margin-bottom:16px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.8;
}
.compare-list li:last-child{margin-bottom:0;}
.compare-list li strong{display:block;color:var(--text);font-weight:600;margin-bottom:2px;}
.compare-col.risk .compare-list li::before{
  content:"";
  position:absolute;
  left:4px;
  top:12px;
  width:8px;
  height:2px;
  background:var(--warn);
  border-radius:2px;
}
.compare-col.safe .compare-list li::before{
  content:"";
  position:absolute;
  left:3px;
  top:8px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand);
}

/* ---------- 图文区 ---------- */
.figure-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
  align-items:center;
  padding:36px 0;
  border-bottom:1px solid var(--line);
}
.figure-row:last-child{border-bottom:0;padding-bottom:0;}
.figure-row:first-child{padding-top:0;}
.figure-row.reverse .figure-media{order:2;}
.figure-media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--bg-section);
  box-shadow:var(--shadow);
}
.figure-caption{
  margin-top:10px;
  font-size:12.5px;
  color:var(--text-3);
  text-align:center;
}
.figure-body h3{
  font-size:22px;
  font-weight:800;
  margin-bottom:14px;
}
.figure-body p{
  color:var(--text-2);
  font-size:15.5px;
  margin-bottom:14px;
}
.figure-body p:last-of-type{margin-bottom:20px;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14.5px;
  font-weight:600;
  color:var(--brand);
  border-bottom:1px solid rgba(43,227,167,.4);
  padding-bottom:2px;
}
.link-arrow:hover{color:var(--accent);border-bottom-color:rgba(123,92,255,.5);}

/* ---------- 自检清单 ---------- */
.check-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px 24px;
}
.check-item{
  display:flex;
  gap:14px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
  transition:border-color .2s ease,box-shadow .25s ease,transform .2s ease;
}
.check-item:hover{
  border-color:rgba(43,227,167,.45);
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
}
.check-icon{
  flex:0 0 auto;
  width:22px;
  height:22px;
  margin-top:3px;
  border-radius:6px;
  border:1px solid rgba(43,227,167,.5);
  background:var(--brand-weak);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:13px;
  font-weight:800;
}
.check-body h3{font-size:15.5px;font-weight:700;margin-bottom:6px;}
.check-body p{font-size:14px;color:var(--text-2);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:860px;
  border-top:1px solid var(--line);
}
.faq-item{
  border-bottom:1px solid var(--line);
  transition:background .25s ease;
}
.faq-item.is-open{
  background:var(--bg-section);
  box-shadow:inset 3px 0 0 var(--brand);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 20px 22px 22px;
  background:transparent;
  border:0;
  color:var(--text);
  font-size:16.5px;
  font-weight:700;
  text-align:left;
  line-height:1.6;
}
.faq-q:hover{color:var(--brand);}
.faq-sign{
  flex:0 0 auto;
  width:26px;
  height:26px;
  border-radius:7px;
  border:1px solid var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:700;
  color:var(--brand);
  line-height:1;
}
.faq-item.is-open .faq-sign{border-color:var(--brand);background:var(--brand-weak);}
.faq-a{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .3s ease;
}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a-inner{overflow:hidden;}
.faq-a-inner p{
  padding:0 60px 24px 22px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}

/* ---------- 相关资讯 ---------- */
.news-list{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.news-item{
  display:grid;
  grid-template-columns:168px 1fr auto;
  gap:20px;
  align-items:center;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:16px;
  transition:border-color .2s ease,box-shadow .25s ease,transform .2s ease;
}
.news-item:hover{
  border-color:rgba(43,227,167,.45);
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
}
.news-item img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:var(--bg-section);
}
.news-body h3{
  font-size:17px;
  font-weight:700;
  margin:8px 0 8px;
  line-height:1.55;
}
.news-body p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-time{
  display:block;
  font-size:12.5px;
  color:var(--text-3);
  margin-top:8px;
  font-variant-numeric:tabular-nums;
}
.news-side{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--bg-card);
  border:1px solid rgba(43,227,167,.35);
  border-radius:var(--radius);
  padding:40px;
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:36px;
  align-items:center;
  box-shadow:var(--shadow);
}
.cta-band h2{
  font-size:26px;
  font-weight:800;
  margin-bottom:12px;
  line-height:1.4;
}
.cta-band p{
  color:var(--text-2);
  font-size:15.5px;
  margin-bottom:14px;
}
.cta-note{
  font-size:12.5px;
  color:var(--text-3);
  line-height:1.7;
}
.cta-actions{
  display:flex;
  flex-direction:column;
  gap:12px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding-top:64px;
  margin-top:0;
}
.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{
  color:var(--text-2);
  font-size:14px;
  line-height:1.8;
  max-width:300px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  color:var(--text-2);
  font-size:14px;
}
.footer-col ul a:hover{color:var(--brand);}
.footer-col ul li span{
  color:var(--text-2);
  font-size:14px;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
}
@media (max-width:991px){
  :root{--space-section:64px;}
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;
    top:0;
    right:0;
    width:82%;
    max-width:360px;
    height:100vh;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:88px 24px 32px;
    background:var(--bg-section);
    border-left:1px solid var(--line);
    transform:translateX(101%);
    transition:transform .28s ease;
    z-index:75;
    overflow-y:auto;
  }
  .site-nav.is-open{transform:translateX(0);}
  .site-nav ul{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav ul li{border-bottom:1px solid var(--line);}
  .site-nav ul a{
    display:flex;
    align-items:center;
    height:52px;
    padding:0;
    font-size:16px;
  }
  .site-nav ul a::after{display:none;}
  .site-nav ul a.is-active{color:var(--brand);}
  .nav-cta{width:100%;margin-top:24px;height:46px;}

  .page-hero-inner{padding-top:34px;padding-bottom:40px;max-width:100%;}
  .page-hero h1{font-size:32px;}
  .page-hero-bg{width:70%;opacity:.18;}

  .lead-grid{grid-template-columns:1fr;gap:32px;}
  .figure-row{grid-template-columns:1fr;gap:26px;}
  .figure-row.reverse .figure-media{order:0;}
  .cta-band{grid-template-columns:1fr;gap:26px;padding:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--space-section:56px;}
  body{font-size:16px;}
  .page-hero h1{font-size:28px;}
  .page-hero-sub{font-size:16px;}
  .section-title{font-size:24px;}
  .compare-grid{grid-template-columns:1fr;}
  .check-list{grid-template-columns:1fr;}
  .news-item{grid-template-columns:1fr;}
  .news-item img{aspect-ratio:16/9;}
  .news-side{flex-direction:row;align-items:center;justify-content:space-between;width:100%;}
  .faq-q{font-size:15.5px;padding:18px 16px 18px 18px;}
  .faq-a-inner p{padding:0 20px 20px 18px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:24px;}
  .section-title{font-size:22px;}
  .figure-body h3{font-size:19px;}
  .cta-band h2{font-size:21px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .compare-col{padding:22px 18px;}
}

/* roulang page: category3 */
:root{
  --bg:#0A0C14;
  --bg-panel:#11141F;
  --bg-card:#171B29;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#2BE3A7;
  --brand-hover:#17C48C;
  --brand-soft:rgba(43,227,167,.12);
  --accent:#7B5CFF;
  --accent-soft:rgba(123,92,255,.14);
  --warn:#FF9A3C;
  --warn-soft:rgba(255,154,60,.12);
  --ink:#F2F5FA;
  --ink-2:#A8B0C2;
  --ink-3:#6B7386;
  --radius:10px;
  --radius-sm:8px;
  --shadow:0 2px 6px rgba(0,0,0,.35);
  --shadow-hover:0 6px 18px rgba(43,227,167,.18);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--ink);}
h1{font-size:40px;font-weight:800;}
h2{font-size:30px;font-weight:800;}
h3{font-size:22px;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--accent);}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.tabular{font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,12,20,.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:17px;letter-spacing:0;}
.logo:hover{color:var(--ink);}
.logo-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;
  border:1px solid rgba(43,227,167,.5);
  background:var(--brand-soft);
  color:var(--brand);display:grid;place-items:center;
}
.logo-mark svg{width:20px;height:20px;}
.logo-text em{font-style:normal;color:var(--brand);}
.site-nav{display:flex;align-items:center;gap:22px;}
.site-nav ul{display:flex;align-items:center;gap:4px;}
.site-nav ul a{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;color:var(--ink-2);border-radius:var(--radius-sm);
  position:relative;transition:color .2s ease,background .2s ease;
}
.site-nav ul a:hover{color:var(--brand);background:rgba(255,255,255,.03);}
.site-nav ul a.is-active{color:var(--brand);}
.site-nav ul a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-toggle{
  display:none;width:44px;height:38px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:transparent;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#06120D;box-shadow:var(--shadow);}
.btn-primary:hover{background:var(--brand-hover);color:#06120D;transform:translateY(-1px);box-shadow:var(--shadow-hover);}
.btn-primary:active{transform:none;box-shadow:var(--shadow);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{color:var(--brand);border-color:var(--accent);transform:translateY(-1px);}
.btn-ghost:active{transform:none;}
.btn-block{width:100%;}
.nav-cta{height:40px;padding:0 18px;font-size:14.5px;}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(43,227,167,.25);
}
.badge-accent{background:var(--accent-soft);color:#B5A4FF;border-color:rgba(123,92,255,.35);}
.badge-warn{background:var(--warn-soft);color:var(--warn);border-color:rgba(255,154,60,.32);}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg-panel);}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.28;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,12,20,.96) 0%,rgba(10,12,20,.82) 45%,rgba(10,12,20,.55) 100%);
}
.hero-inner{position:relative;z-index:2;padding:42px 24px 46px;max-width:var(--container);margin:0 auto;min-height:240px;display:flex;flex-direction:column;justify-content:center;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--ink-3);opacity:.7;}
.breadcrumb .current{color:var(--ink-2);}
.page-hero h1{font-size:38px;max-width:760px;}
.hero-lead{margin:14px 0 0;max-width:640px;color:var(--ink-2);font-size:16.5px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}

/* ---------- sections ---------- */
.section{padding:78px 0;}
.section-alt{background:var(--bg-panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:36px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--brand);letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px;}
.section-title{position:relative;padding-left:14px;}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--brand);}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:16px;}

/* ---------- intro + key points ---------- */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start;}
.intro-copy p{color:var(--ink-2);font-size:16.5px;}
.intro-copy p:last-child{margin-bottom:0;}
.key-points{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow);position:relative;overflow:hidden;}
.key-points::before{content:"";position:absolute;top:0;right:0;width:52px;height:52px;background:linear-gradient(225deg,var(--brand-soft) 0%,transparent 70%);clip-path:polygon(100% 0,0 0,100% 100%);}
.key-points h3{font-size:19px;margin-bottom:18px;}
.key-point{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line);}
.key-point:first-of-type{border-top:0;padding-top:0;}
.key-num{font-size:15px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;flex:0 0 30px;}
.key-point p{margin:0;color:var(--ink-2);font-size:15px;line-height:1.75;}

/* ---------- qa waterfall ---------- */
.qa-columns{columns:2;column-gap:24px;}
.qa-card{
  break-inside:avoid;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 20px;margin:0 0 24px;box-shadow:var(--shadow);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.qa-card:hover{border-color:rgba(43,227,167,.5);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.qa-card h3{font-size:18px;line-height:1.5;margin-bottom:10px;}
.qa-card h3::before{content:"问";display:inline-grid;place-items:center;width:22px;height:22px;margin-right:8px;border-radius:6px;font-size:12px;font-weight:700;color:var(--brand);background:var(--brand-soft);border:1px solid rgba(43,227,167,.3);vertical-align:2px;}
.qa-card p{margin:0;color:var(--ink-2);font-size:15.5px;line-height:1.8;}
.qa-tag{display:inline-block;margin-top:14px;font-size:12px;color:var(--ink-3);}

/* ---------- check list ---------- */
.check-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-card);}
.check-head,.check-row{display:grid;grid-template-columns:1.1fr 1fr 1.4fr;gap:18px;padding:16px 22px;align-items:start;}
.check-head{background:var(--bg-panel);font-size:13px;color:var(--ink-3);letter-spacing:.04em;border-bottom:1px solid var(--line);}
.check-row{border-top:1px solid var(--line);font-size:15px;color:var(--ink-2);}
.check-row:first-of-type{border-top:0;}
.check-row strong{color:var(--ink);font-weight:600;font-size:15px;}
.check-row .hint{color:var(--brand);}

/* ---------- media blocks ---------- */
.media-block{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;padding:26px 0;border-top:1px solid var(--line);}
.media-block:first-of-type{border-top:0;padding-top:0;}
.media-block.reverse .media-media{order:2;}
.media-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-panel);}
.media-body h3{margin-bottom:12px;}
.media-body p{color:var(--ink-2);font-size:16px;margin-bottom:14px;}
.media-body p:last-child{margin-bottom:0;}
.media-list li{position:relative;padding-left:18px;color:var(--ink-2);font-size:15px;margin-bottom:8px;}
.media-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--brand);border-radius:2px;}

/* ---------- related ---------- */
.rec-list{display:grid;gap:16px;}
.rec-item{display:grid;grid-template-columns:160px 1fr auto;gap:20px;align-items:center;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
.rec-item:hover{border-color:rgba(43,227,167,.5);box-shadow:var(--shadow-hover);transform:translateY(-2px);}
.rec-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--bg-panel);}
.rec-body h3{font-size:17px;margin-bottom:8px;}
.rec-body p{margin:0;color:var(--ink-2);font-size:14.5px;}
.rec-time{font-size:12.5px;color:var(--ink-3);white-space:nowrap;font-variant-numeric:tabular-nums;}
.rec-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;}
.rec-link::after{content:"→";transition:transform .2s ease;}
.rec-link:hover::after{transform:translateX(3px);}

/* ---------- faq ---------- */
.faq{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-card);}
.faq-item+.faq-item{border-top:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  color:var(--ink);font-size:17px;font-weight:600;transition:background .2s ease,color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{background:var(--bg-panel);color:var(--brand);}
.faq-icon{flex:0 0 24px;text-align:center;font-size:20px;font-weight:400;color:var(--brand);line-height:1;}
.faq-a{display:none;padding:0 22px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.85;border-left:3px solid var(--brand);background:var(--bg-panel);margin-left:0;}
.faq-item.is-open .faq-a{display:block;}
.faq-a p:last-child{margin-bottom:0;}

/* ---------- cta + form ---------- */
.cta-band{background:var(--bg-panel);border-top:1px solid var(--line);}
.cta-card{
  border:1px solid rgba(43,227,167,.42);border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(43,227,167,.08) 0%,rgba(17,20,31,.6) 45%,var(--bg-card) 100%);
  padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start;box-shadow:var(--shadow);
}
.cta-copy h2{font-size:26px;}
.cta-copy p{color:var(--ink-2);font-size:16px;margin-top:14px;}
.cta-copy .btn{margin-top:8px;}
.contact-form{background:rgba(10,12,20,.55);border:1px solid var(--line);border-radius:var(--radius);padding:24px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:7px;}
.field input,.field select{
  width:100%;height:44px;padding:0 14px;border-radius:var(--radius-sm);
  background:var(--bg);border:1px solid var(--line-strong);color:var(--ink);
  appearance:none;-webkit-appearance:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.field select{background-image:linear-gradient(45deg,transparent 50%,var(--ink-2) 50%),linear-gradient(135deg,var(--ink-2) 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 14px) 19px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:38px;}
.field input::placeholder{color:var(--ink-3);}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,227,167,.16);}
.field.has-error input,.field.has-error select{border-color:var(--warn);box-shadow:0 0 0 3px rgba(255,154,60,.14);}
.field-error{display:none;margin-top:6px;font-size:12.5px;color:var(--warn);}
.field.has-error .field-error{display:block;}
.form-note{margin:12px 0 0;font-size:12.5px;color:var(--ink-3);line-height:1.7;}
.form-status{margin:14px 0 0;font-size:14px;color:var(--brand);display:none;}
.form-status.show{display:block;}

/* ---------- footer ---------- */
.site-footer{background:var(--bg);border-top:1px solid var(--line);padding:60px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px;border-bottom:1px solid var(--line);}
.footer-brand p{margin:16px 0 0;color:var(--ink-2);font-size:14.5px;max-width:300px;}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:var(--ink-2);font-size:14.5px;}
.footer-col ul li a:hover{color:var(--brand);}
.footer-col ul li span{color:var(--ink-2);font-size:14.5px;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:22px;font-size:12.5px;color:var(--ink-3);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
}
@media (max-width:991px){
  .nav-toggle{display:flex;}
  .site-nav{
    position:fixed;top:0;right:0;z-index:90;
    width:82%;max-width:340px;height:100vh;
    background:var(--bg-panel);border-left:1px solid var(--line);
    padding:88px 20px 28px;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    transform:translateX(103%);transition:transform .28s ease;overflow-y:auto;
  }
  .site-nav.is-open{transform:translateX(0);}
  .site-nav ul{flex-direction:column;align-items:stretch;gap:0;}
  .site-nav ul li{border-bottom:1px solid var(--line);}
  .site-nav ul a{display:flex;height:52px;padding:0 6px;border-radius:0;font-size:16px;}
  .site-nav ul a.is-active::after{left:6px;right:auto;width:22px;bottom:12px;}
  .nav-cta{width:100%;margin-top:22px;height:48px;}
  h1{font-size:30px;}
  .page-hero h1{font-size:31px;}
  .intro-grid{grid-template-columns:1fr;}
  .cta-card{grid-template-columns:1fr;padding:26px;}
  .media-block{grid-template-columns:1fr;gap:22px;}
  .media-block.reverse .media-media{order:0;}
  .qa-columns{columns:1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:54px 0;}
  .container{padding:0 16px;}
  .hero-inner{padding:32px 16px 36px;min-height:0;}
  h1{font-size:28px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .page-hero h1{font-size:27px;}
  .hero-lead{font-size:15.5px;}
  .rec-item{grid-template-columns:1fr;gap:14px;}
  .rec-thumb img{aspect-ratio:16/9;}
  .rec-time{order:3;}
  .check-head{display:none;}
  .check-row{grid-template-columns:1fr;gap:6px;padding:18px;}
  .check-row .check-label{display:block;font-size:12.5px;color:var(--ink-3);}
  .btn{width:100%;}
  .nav-cta{width:100%;}
  .site-nav ul a{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .hero-meta{gap:8px;}
  .faq-q{font-size:16px;padding:18px 16px;}
  .faq-a{padding:0 16px 18px;}
  .qa-card{padding:18px;}
  .key-points{padding:22px 18px;}
}