/* roulang page: index */
:root{
  --bg:#F6F5F0;
  --surface:#FFFFFF;
  --surface-2:#ECEAE3;
  --ink:#0E1412;
  --ink-2:#4C5652;
  --ink-3:#7B8580;
  --brand:#0F1B17;
  --brand-2:#16261F;
  --accent:#C7F43C;
  --accent-2:#2ED3C6;
  --warn:#FF7A3D;
  --line:#DCD9D0;
  --shadow:0 12px 30px rgba(14,20,18,.08);
  --shadow-lg:0 22px 48px rgba(14,20,18,.14);
  --radius:16px;
  --radius-sm:12px;
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;background:transparent}
a:hover{color:inherit}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font-family:inherit;font-size:15px}
::selection{background:var(--accent);color:var(--brand)}
:focus-visible{outline:3px solid rgba(46,211,198,.5);outline-offset:2px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1560px){.container{max-width:1280px}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);border:1px solid transparent;
  padding:12px 22px;font-size:15px;font-weight:700;line-height:1.3;
  letter-spacing:.01em;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:16px}
.btn-primary{background:var(--accent);color:var(--brand)}
.btn-primary:hover,.btn-primary:focus{background:#b6e42c;color:var(--brand);transform:translateY(-2px);box-shadow:0 12px 26px rgba(199,244,60,.34)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:#F6F5F0;transform:translateY(-2px)}
.btn-ghost-light{background:transparent;color:#F6F5F0;border-color:rgba(246,245,240,.38)}
.btn-ghost-light:hover,.btn-ghost-light:focus{background:#F6F5F0;color:var(--brand);transform:translateY(-2px)}
.btn-block{width:100%}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;
  transition:border-color .2s var(--ease),color .2s var(--ease),gap .2s var(--ease);
}
.link-more::after{content:"→";transition:transform .2s var(--ease)}
.link-more:hover{border-color:var(--accent);color:var(--brand);gap:10px}

/* ---------- 标签 / chip ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--surface-2);color:var(--ink-2);
  font-size:12.5px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.chip-accent{background:rgba(199,244,60,.28);color:#3D5410}
.chip-outline{background:transparent;border:1px solid var(--line);color:var(--ink-2)}
.chip-mint{background:rgba(46,211,198,.16);color:#12615A}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,240,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.site-header.is-stuck{background:#fff;border-bottom-color:var(--line);box-shadow:0 8px 26px rgba(14,20,18,.07)}
.nav-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:900;font-size:16px;letter-spacing:-.02em;flex:0 0 auto;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.nav-tabs{display:flex;align-items:center;gap:8px;margin-left:14px}
.nav-chip{
  padding:8px 16px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-chip:hover{background:#E1DED4;color:var(--ink);transform:translateY(-1px)}
.nav-chip.is-active{background:var(--brand);color:var(--accent)}
.nav-chip.is-active:hover{background:var(--brand-2);color:var(--accent)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--brand);color:#F6F5F0;
  padding:80px 0 96px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(246,245,240,.16) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-180px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(46,211,198,.22),transparent 68%);pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(246,245,240,.1);border:1px solid rgba(246,245,240,.2);
  font-size:13px;font-weight:600;letter-spacing:.04em;color:#D9E2DC;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero h1{
  margin-top:22px;
  font-size:clamp(34px,4.6vw,64px);
  line-height:1.08;font-weight:900;letter-spacing:-.03em;color:#F8F8F4;
}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-sub{
  margin-top:20px;max-width:560px;
  font-size:17px;line-height:1.85;color:#B9C4BE;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:44px;
  padding-top:26px;border-top:1px solid rgba(246,245,240,.14);
}
.hero-stats li{flex:1 1 150px;min-width:140px}
.hero-stats strong{
  display:block;font-size:15px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.hero-stats span{display:block;margin-top:4px;font-size:13.5px;color:#9DA8A2;line-height:1.6}
.hero-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid rgba(246,245,240,.16);box-shadow:0 30px 60px rgba(0,0,0,.35)}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.hero-media-tag{
  position:absolute;left:16px;bottom:16px;
  padding:8px 14px;border-radius:999px;
  background:rgba(15,27,23,.78);border:1px solid rgba(246,245,240,.2);
  font-size:13px;font-weight:600;color:#F6F5F0;backdrop-filter:blur(6px);
}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:76px 0}
.section-muted{background:var(--surface-2)}
.section-dark{background:var(--brand);color:#F6F5F0}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.split{
  display:flex;align-items:flex-end;justify-content:space-between;gap:28px;
  max-width:none;
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow-dark{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:.1em;
  color:#6E7A74;text-transform:none;margin-bottom:12px;
}
.section-dark .eyebrow-dark{color:var(--accent-2)}
.section h2{
  font-size:clamp(27px,3vw,42px);line-height:1.16;font-weight:900;letter-spacing:-.025em;
}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px;line-height:1.85}
.section-dark .section-head p{color:#A9B3AE}

/* ---------- 三步上手 ---------- */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.step-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow-lg)}
.step-num{
  display:inline-block;font-size:14px;font-weight:800;letter-spacing:.12em;
  color:var(--brand);background:var(--accent);border-radius:8px;padding:4px 10px;
  font-variant-numeric:tabular-nums;
}
.step-card h3{margin-top:18px;font-size:21px;font-weight:800;letter-spacing:-.02em;line-height:1.4}
.step-card p{margin-top:12px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.step-card .link-more{margin-top:20px}

/* ---------- 案例证明 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.case-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow-lg)}
.case-thumb{overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.case-card:hover .case-thumb img{transform:scale(1.04)}
.case-body{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.case-body h3{font-size:19px;font-weight:800;letter-spacing:-.02em;line-height:1.45}
.case-body p{margin-top:10px;color:var(--ink-2);font-size:15px;line-height:1.85;flex:1}
.case-meta{display:flex;align-items:center;gap:10px;margin-top:16px}

/* ---------- 最新信息 ---------- */
.news-layout{display:grid;grid-template-columns:1.08fr 1fr;gap:24px;align-items:start}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow-lg)}
.news-link{display:block;height:100%}
.news-thumb{overflow:hidden;aspect-ratio:16/10;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:22px 24px 24px}
.news-body h3{margin-top:12px;font-size:19px;font-weight:800;line-height:1.45;letter-spacing:-.02em}
.news-feature .news-body h3{font-size:24px}
.news-body p{margin-top:10px;color:var(--ink-2);font-size:15px;line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-feature .news-body p{-webkit-line-clamp:3}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.news-foot time{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.news-grid .news-thumb{aspect-ratio:16/9}
.news-grid .news-body{padding:18px 20px 20px}
.news-grid .news-body h3{font-size:16.5px;-webkit-line-clamp:2;display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}
.news-grid .news-body p{font-size:14px;-webkit-line-clamp:2}
.empty-state{
  padding:48px 28px;text-align:center;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--radius);color:var(--ink-3);font-size:15px;
}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
.faq-side{position:sticky;top:104px}
.faq-side h2{font-size:clamp(26px,2.8vw,38px);font-weight:900;letter-spacing:-.025em;line-height:1.18}
.faq-side p{margin-top:16px;color:var(--ink-2);font-size:16px;line-height:1.85}
.faq-side .btn{margin-top:26px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.is-open{border-color:#C9D6C2;box-shadow:inset 3px 0 0 var(--accent)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--brand-2)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--ink-2);
  transition:transform .24s var(--ease),background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--accent);border-color:var(--accent);color:var(--brand);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a-inner{padding:0 24px 22px;color:var(--ink-2);font-size:15.5px;line-height:1.9;max-width:760px}

/* ---------- CTA + 表单 ---------- */
.cta-wrap{
  background:var(--brand);color:#F6F5F0;border-radius:24px;
  padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:56px;
  position:relative;overflow:hidden;
}
.cta-wrap::after{
  content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(199,244,60,.16),transparent 70%);pointer-events:none;
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(26px,3vw,40px);font-weight:900;letter-spacing:-.025em;line-height:1.18;color:#F8F8F4}
.cta-copy p{margin-top:16px;color:#A9B3AE;font-size:16px;line-height:1.85}
.cta-points{margin-top:28px;display:grid;gap:12px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:#D3DCD7}
.cta-points li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:10px;border-radius:2px;background:var(--accent-2);
}
.cta-form{
  position:relative;z-index:2;background:var(--surface);color:var(--ink);
  border-radius:var(--radius);padding:28px;border:1px solid rgba(246,245,240,.5);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:8px;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;color:var(--ink);line-height:1.5;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:0;border-color:var(--accent-2);box-shadow:0 0 0 4px rgba(46,211,198,.16);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{margin-top:14px;font-size:12.5px;color:var(--ink-3);line-height:1.7}
.form-msg{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--radius-sm);
  background:rgba(46,211,198,.14);color:#12615A;font-size:14px;font-weight:600;
}
.form-msg.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A110E;color:#9DA8A2;padding:68px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);color:var(--brand)}
.footer-brand .brand-text{color:#F6F5F0}
.footer-about{font-size:14.5px;line-height:1.9;max-width:320px;color:#8E9993}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{
  padding:4px 11px;border-radius:999px;font-size:12.5px;
  background:rgba(246,245,240,.07);border:1px solid rgba(246,245,240,.12);color:#B7C1BB;
}
.footer-col h4{font-size:14px;font-weight:700;color:#F6F5F0;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:#9DA8A2;transition:color .2s var(--ease),padding-left .2s var(--ease)}
.footer-col a:hover{color:var(--accent);padding-left:4px}
.footer-col p{font-size:14.5px;line-height:1.9;color:#9DA8A2}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(246,245,240,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#7B8580;
}
.footer-bottom a{color:#A9B3AE;border-bottom:1px solid rgba(246,245,240,.18)}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent)}

/* ---------- 动效 ---------- */
.fade-up{opacity:0;transform:translateY(18px)}
.fade-up.is-in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  .fade-up{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .nav-chip{padding:8px 13px;font-size:13.5px}
  .brand-text{font-size:16px}
}
@media (max-width:1024px){
  .hero{padding:64px 0 76px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:clamp(32px,5.6vw,48px)}
  .section{padding:80px 0}
  .steps-grid{grid-template-columns:1fr 1fr}
  .case-grid{grid-template-columns:1fr 1fr}
  .news-layout{grid-template-columns:1fr}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
  .cta-wrap{grid-template-columns:1fr;gap:36px;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .nav-tabs{
    position:absolute;top:72px;left:0;right:0;margin:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:16px 24px 22px;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:0 18px 34px rgba(14,20,18,.1);
    display:none;
  }
  .nav-tabs.is-open{display:flex}
  .nav-chip{text-align:center;padding:11px 16px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .nav-inner{height:64px}
  .nav-tabs{top:64px}
  .brand-text{font-size:15px}
  .brand-mark{width:30px;height:30px;font-size:14px;border-radius:9px}
  .hero{padding:52px 0 62px}
  .hero h1{font-size:clamp(30px,7.4vw,40px)}
  .hero-sub{font-size:15.5px}
  .hero-cta .btn{flex:1 1 auto}
  .hero-stats{gap:12px}
  .hero-stats li{flex:1 1 100%}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
  .section-head.split{flex-direction:column;align-items:flex-start}
  .steps-grid,.case-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .news-feature .news-body h3{font-size:20px}
  .cta-wrap{padding:28px;border-radius:20px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis}
  .nav-actions .btn-sm{padding:8px 12px;font-size:13px}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a-inner{padding:0 18px 20px}
  .step-card,.case-body{padding:22px}
}

/* roulang page: article */
:root{
  --bg:#F6F5F0;
  --surface:#FFFFFF;
  --surface-2:#ECEAE3;
  --ink:#0E1412;
  --ink-2:#4C5652;
  --ink-3:#7B8580;
  --brand:#0F1B17;
  --accent:#C7F43C;
  --accent-2:#2ED3C6;
  --warn:#FF7A3D;
  --line:#DCD9D0;
  --shadow:0 12px 30px rgba(14,20,18,.08);
  --radius:16px;
  --radius-lg:22px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
::selection{background:var(--accent);color:var(--brand)}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:3px;border-radius:6px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,240,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{background:#fff;box-shadow:0 10px 28px rgba(14,20,18,.09)}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:17px;letter-spacing:-.02em;white-space:nowrap}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--brand);color:var(--accent);
  display:grid;place-items:center;font-size:17px;font-weight:900;flex:0 0 auto;
}
.brand-text{color:var(--ink)}
.nav-tabs{display:flex;align-items:center;gap:8px;margin-left:auto}
.nav-chip{
  display:inline-flex;align-items:center;
  padding:9px 17px;border-radius:999px;
  background:var(--surface-2);color:var(--ink-2);
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-chip:hover{background:#E1DED4;color:var(--ink);transform:translateY(-1px)}
.nav-chip.is-active{background:var(--brand);color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  transition:background .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--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)}
.nav-toggle:hover{background:var(--surface-2)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:var(--brand)}
.btn-primary:hover{background:#B7E42F;transform:translateY(-2px);box-shadow:0 12px 24px rgba(199,244,60,.34)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--bg);transform:translateY(-2px)}
.btn-light{background:transparent;border-color:rgba(246,245,240,.4);color:#F6F5F0}
.btn-light:hover{background:#F6F5F0;color:var(--brand);transform:translateY(-2px)}
.btn-sm{padding:9px 17px;font-size:14px;border-radius:10px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:1px solid transparent;transition:border-color .2s var(--ease),color .2s var(--ease),gap .2s var(--ease);
}
.link-arrow:hover{color:#0E7A72;border-bottom-color:#0E7A72;gap:10px}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-3);padding:22px 0 0;
}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:rgba(123,133,128,.6)}
.breadcrumb .current{color:var(--ink);font-weight:600;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;background:var(--brand);color:#F6F5F0;overflow:hidden;padding:26px 0 68px;margin-top:-1px}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.2;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 380px at 18% 10%,rgba(46,211,198,.16),transparent 65%);
}
.article-hero .container{position:relative;z-index:2}
.article-hero .breadcrumb{color:#A9B3AE}
.article-hero .breadcrumb a{color:#A9B3AE}
.article-hero .breadcrumb a:hover{color:var(--accent)}
.article-hero .breadcrumb .current{color:#F6F5F0}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:30px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;background:var(--surface-2);color:var(--ink-2);
  font-size:13px;font-weight:700;
}
.chip-accent{background:rgba(199,244,60,.16);color:var(--accent);border:1px solid rgba(199,244,60,.35)}
.meta-text{font-size:13.5px;color:#A9B3AE}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(169,179,174,.7)}
.article-title{
  margin-top:18px;color:#F6F5F0;
  font-size:clamp(30px,4.4vw,50px);line-height:1.14;font-weight:900;letter-spacing:-.03em;
  max-width:900px;
  animation:fadeUp .6s var(--ease) both;
}
.article-lead{
  margin-top:20px;max-width:780px;font-size:16px;line-height:1.85;color:#C6CFCA;
  animation:fadeUp .7s var(--ease) both;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* ---------- 正文区 ---------- */
.article-main{padding:0 0 96px}
.article-shell{max-width:900px;margin:-38px auto 0;position:relative;z-index:3}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:52px 56px 56px;
}
.article-cover{margin:0 0 36px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.article-cover img{width:100%;aspect-ratio:16/8;object-fit:cover}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:820px}
.article-body h2{
  font-size:27px;line-height:1.3;color:var(--ink);font-weight:800;letter-spacing:-.02em;
  margin:2.1em 0 .75em;padding-left:16px;border-left:4px solid var(--accent);
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;line-height:1.4;color:var(--ink);font-weight:700;margin:1.7em 0 .6em}
.article-body h4{font-size:17px;color:var(--ink);margin:1.4em 0 .5em}
.article-body p{margin:0 0 1.2em}
.article-body a{color:#0E7A72;text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body strong{color:var(--ink);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em}
.article-body ul li{list-style:disc;margin-bottom:.5em}
.article-body ol li{list-style:decimal;margin-bottom:.5em}
.article-body img{border-radius:12px;margin:1.7em 0;width:100%}
.article-body figure{margin:1.7em 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body blockquote{
  margin:1.7em 0;padding:20px 24px;background:var(--surface-2);color:var(--ink);
  border-left:4px solid var(--accent-2);border-radius:0 12px 12px 0;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.article-body th{background:var(--surface-2);color:var(--ink);font-weight:700}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0}

/* ---------- 空态 ---------- */
.article-empty{text-align:center;padding:34px 0 18px}
.article-empty h2{font-size:28px;color:var(--ink);margin-bottom:14px;border:none;padding:0}
.article-empty p{color:var(--ink-2);margin-bottom:28px}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 96px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.16em;color:#0E7A72;
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{font-size:clamp(26px,3vw,36px);letter-spacing:-.025em}
.section-sub{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:600px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(14,20,18,.11);border-color:var(--accent)}
.card-media{position:relative;overflow:hidden;background:var(--surface-2)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-cat{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3)}
.card h3{font-size:19px;line-height:1.4;font-weight:800;letter-spacing:-.015em}
.card p{font-size:14.5px;line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:8px}
.card-link{position:absolute;inset:0;z-index:2}

/* ---------- 返回入口 ---------- */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;margin-top:44px;padding:24px 26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.back-bar p{font-size:15px;color:var(--ink-2)}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand);color:#F6F5F0;position:relative;overflow:hidden;padding:78px 0}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(199,244,60,.2),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:34px}
.cta-copy{max-width:640px}
.cta-copy h2{color:#F6F5F0;font-size:clamp(26px,3.2vw,38px);letter-spacing:-.025em}
.cta-copy p{margin-top:16px;font-size:16px;line-height:1.85;color:#A9B3AE}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B1512;color:#A9B3AE;padding:72px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(246,245,240,.14)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#F6F5F0;font-weight:900;font-size:17px;letter-spacing:-.02em}
.footer-brand .brand-mark{background:rgba(199,244,60,.14);color:var(--accent)}
.footer-about{margin-top:18px;font-size:14.5px;line-height:1.85;max-width:340px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.footer-tags span{
  font-size:12.5px;padding:5px 12px;border-radius:999px;
  border:1px solid rgba(246,245,240,.16);color:#C6CFCA;
}
.footer-col h4{color:#F6F5F0;font-size:14px;font-weight:700;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:11px}
.footer-col a{font-size:14.5px;color:#A9B3AE}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14.5px;line-height:1.9}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:24px;font-size:13px;color:#7E8A84;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:880px){
  .nav-toggle{display:flex}
  .nav-inner{gap:12px}
  .nav-tabs{
    position:absolute;top:72px;left:0;right:0;margin-left:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border-bottom:1px solid var(--line);
    padding:14px 20px 20px;box-shadow:0 18px 34px rgba(14,20,18,.12);
    display:none;
  }
  .nav-tabs.is-open{display:flex;animation:fadeUp .24s var(--ease) both}
  .nav-chip{justify-content:center;padding:11px 16px}
  .article-card{padding:38px 28px 42px}
  .article-shell{margin-top:-26px}
  .back-bar{flex-direction:column;align-items:flex-start}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .article-hero{padding:14px 0 56px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:18.5px}
  .related{padding-bottom:72px}
  .cta-band{padding:60px 0}
  .section-head{margin-bottom:28px}
}
@media (max-width:600px){
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px}
  .article-card{padding:28px 20px 34px;border-radius:18px}
  .breadcrumb .current{max-width:52vw}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg:#F6F5F0;
  --surface:#FFFFFF;
  --surface-2:#ECEAE3;
  --ink:#0E1412;
  --ink-2:#4C5652;
  --ink-3:#7B8580;
  --brand:#0F1B17;
  --accent:#C7F43C;
  --accent-2:#2ED3C6;
  --warn:#FF7A3D;
  --line:#DCD9D0;
  --shadow:0 12px 30px rgba(14,20,18,.08);
  --shadow-lg:0 22px 50px rgba(14,20,18,.14);
  --radius:16px;
  --radius-sm:12px;
  --maxw:1200px;
  --ease:cubic-bezier(.4,.1,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent-2);
  outline-offset:2px;
}
h1,h2,h3,h4{
  margin:0;
  font-weight:800;
  letter-spacing:-.025em;
  line-height:1.2;
  color:var(--ink);
}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}
.wide{max-width:1280px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-sm);
  font-size:16px;
  font-weight:700;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:var(--brand);
  box-shadow:0 10px 24px rgba(199,244,60,.28);
}
.btn-primary:hover{
  background:var(--brand);
  color:var(--accent);
  transform:translateY(-2px);
  box-shadow:0 16px 32px rgba(15,27,23,.28);
}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border-color:var(--ink);
}
.btn-ghost:hover{
  background:var(--ink);
  color:var(--bg);
  transform:translateY(-2px);
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px;}
.btn-on-dark{
  background:transparent;
  color:#F6F5F0;
  border-color:rgba(246,245,240,.4);
}
.btn-on-dark:hover{
  background:#F6F5F0;
  color:var(--brand);
  transform:translateY(-2px);
}
.btn-block{width:100%;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,245,240,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.site-header.is-scrolled{
  background:#FFFFFF;
  box-shadow:0 10px 26px rgba(14,20,18,.09);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:900;
  letter-spacing:-.03em;
  flex:0 0 auto;
}
.brand-mark{
  width:34px;height:34px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);
  color:var(--accent);
  border-radius:10px;
  font-size:17px;
  font-weight:900;
}
.brand-text{font-size:17px;color:var(--ink);white-space:nowrap;}
.nav-tabs{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 auto;
  justify-content:center;
  flex-wrap:nowrap;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-chip{
  display:inline-flex;
  align-items:center;
  padding:9px 16px;
  border-radius:999px;
  background:var(--surface-2);
  color:var(--ink-2);
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  border:1px solid transparent;
}
.nav-chip:hover{
  background:var(--surface);
  color:var(--ink);
  border-color:var(--line);
}
.nav-chip.is-active{
  background:var(--brand);
  color:var(--accent);
  font-weight:700;
}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:10px;
  border:1px solid var(--line);
  background:var(--surface);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-3);
  padding:14px 0;
  flex-wrap:wrap;
}
.crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:4px;}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink);font-weight:700;}

/* ============ 分类 Hero ============ */
.hero2{
  position:relative;
  background-color:var(--brand);
  background-image:linear-gradient(120deg,rgba(15,27,23,.94) 0%,rgba(15,27,23,.78) 48%,rgba(15,27,23,.62) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  color:#F6F5F0;
  overflow:hidden;
}
.hero2::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:rgba(246,245,240,.14);
}
.hero2-inner{
  position:relative;
  padding:88px 24px 72px;
  max-width:900px;
}
.hero2-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(246,245,240,.22);
  background:rgba(246,245,240,.06);
  color:var(--accent);
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  margin-bottom:22px;
}
.hero2 h1{
  color:#F6F5F0;
  font-size:64px;
  font-weight:900;
  line-height:1.06;
  letter-spacing:-.03em;
  max-width:16em;
  animation:riseIn .7s var(--ease) both;
}
.hero2-sub{
  margin-top:20px;
  font-size:19px;
  line-height:1.7;
  color:#C9D1CD;
  max-width:36em;
  animation:riseIn .7s .1s var(--ease) both;
}
.hero2-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:34px;
  animation:riseIn .7s .18s var(--ease) both;
}
.hero2-cta .btn-ghost{
  color:#F6F5F0;
  border-color:rgba(246,245,240,.4);
}
.hero2-cta .btn-ghost:hover{
  background:#F6F5F0;
  color:var(--brand);
}
.hero2-meta{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px;
  margin-top:52px;
  padding-top:28px;
  border-top:1px solid rgba(246,245,240,.16);
  animation:riseIn .7s .26s var(--ease) both;
}
.hero2-meta li{display:flex;flex-direction:column;gap:4px;}
.hero2-meta strong{
  font-size:17px;
  font-weight:800;
  color:var(--accent);
  letter-spacing:-.01em;
}
.hero2-meta span{font-size:13.5px;color:#A9B3AE;}
@keyframes riseIn{
  from{opacity:0;transform:translateY(18px);}
  to{opacity:1;transform:translateY(0);}
}

/* ============ 筛选 chip 栏 ============ */
.chip-bar-wrap{
  position:sticky;
  top:72px;
  z-index:40;
  background:rgba(246,245,240,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.chip-bar{
  display:flex;
  align-items:center;
  gap:10px;
  padding:16px 24px;
  overflow-x:auto;
  scrollbar-width:none;
}
.chip-bar::-webkit-scrollbar{display:none;}
.chip{
  display:inline-flex;
  align-items:center;
  padding:10px 18px;
  border-radius:999px;
  background:var(--surface);
  border:1px solid var(--line);
  color:var(--ink-2);
  font-size:14.5px;
  font-weight:500;
  white-space:nowrap;
  transition:all .2s var(--ease);
}
.chip:hover{border-color:var(--ink-3);color:var(--ink);transform:translateY(-1px);}
.chip.is-active{
  background:var(--brand);
  border-color:var(--brand);
  color:var(--accent);
  font-weight:700;
}
.chip-count{
  margin-left:6px;
  font-size:12px;
  color:var(--ink-3);
  font-weight:700;
}
.chip.is-active .chip-count{color:rgba(199,244,60,.75);}

/* ============ 交错图文卡 ============ */
.alt-section{padding:88px 0 24px;}
.alt-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:14px;
  flex-wrap:wrap;
}
.alt-head h2{
  font-size:40px;
  letter-spacing:-.03em;
}
.alt-head p{
  color:var(--ink-2);
  font-size:16px;
  max-width:38em;
  margin-top:12px;
}
.alt-list{display:flex;flex-direction:column;gap:40px;margin-top:36px;}
.alt-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.alt-row:hover{
  transform:translateY(-3px);
  border-color:var(--accent);
  box-shadow:var(--shadow-lg);
}
.alt-media{
  position:relative;
  min-height:320px;
  overflow:hidden;
  background:var(--surface-2);
}
.alt-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.alt-row:hover .alt-media img{transform:scale(1.03);}
.alt-badge{
  position:absolute;
  left:18px;top:18px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--brand);
  color:var(--accent);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.06em;
}
.alt-body{
  padding:38px 40px;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.alt-body h2{
  font-size:30px;
  line-height:1.25;
}
.alt-body .lead{
  color:var(--ink-2);
  font-size:16.5px;
  line-height:1.8;
}
.alt-points{display:flex;flex-direction:column;gap:12px;margin-top:4px;}
.alt-points li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:14px 16px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
}
.alt-points .num{
  font-family:"SFMono-Regular",Consolas,monospace;
  font-size:13px;
  font-weight:700;
  color:var(--ink-3);
  letter-spacing:.04em;
  padding-top:2px;
}
.alt-points h3{
  font-size:17px;
  font-weight:800;
  margin-bottom:2px;
}
.alt-points p{font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.alt-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-top:auto;
  padding-top:18px;
  border-top:1px dashed var(--line);
  flex-wrap:wrap;
}
.alt-tags{display:flex;gap:8px;flex-wrap:wrap;}
.tag{
  display:inline-flex;
  padding:5px 12px;
  border-radius:999px;
  background:var(--surface-2);
  color:var(--ink-2);
  font-size:12.5px;
  font-weight:700;
}
.tag.accent{background:rgba(199,244,60,.28);color:#3F5A0A;}
.tag.teal{background:rgba(46,211,198,.18);color:#14605A;}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:800;
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:2px;
}
.link-more:hover{color:#3F5A0A;border-bottom-color:var(--ink);}
.alt-row.is-reverse .alt-media{order:2;}
.alt-row.is-hidden{display:none;}
.alt-empty{
  display:none;
  padding:56px 28px;
  text-align:center;
  background:var(--surface);
  border:1px dashed var(--line);
  border-radius:var(--radius);
  color:var(--ink-2);
}
.alt-empty.is-visible{display:block;}

/* ============ 相关分类 chip ============ */
.rel-strip{padding:72px 0 0;}
.rel-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px 32px;
  box-shadow:var(--shadow);
  flex-wrap:wrap;
}
.rel-box h2{font-size:22px;font-weight:800;}
.rel-box p{font-size:14.5px;color:var(--ink-2);margin-top:6px;}
.rel-chips{display:flex;gap:10px;flex-wrap:wrap;}

/* ============ FAQ ============ */
.faq-section{padding:96px 0;}
.faq-grid{
  display:grid;
  grid-template-columns:minmax(0,340px) minmax(0,760px);
  gap:56px;
  align-items:start;
}
.faq-aside{position:sticky;top:150px;}
.faq-aside h2{font-size:38px;letter-spacing:-.03em;}
.faq-aside p{margin-top:14px;color:var(--ink-2);font-size:16px;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  position:relative;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--accent);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .28s var(--ease);
}
.faq-item.is-open{border-color:var(--ink-3);box-shadow:var(--shadow);}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 26px;
  text-align:left;
  font-size:18px;
  font-weight:800;
  color:var(--ink);
  letter-spacing:-.01em;
}
.faq-q:hover{color:#3F5A0A;}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;
  font-weight:700;
  color:var(--ink-2);
  transition:transform .28s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.faq-item.is-open .faq-icon{
  background:var(--accent);
  color:var(--brand);
  border-color:var(--accent);
  transform:rotate(180deg);
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-a-inner{
  padding:0 26px 24px;
  color:var(--ink-2);
  font-size:15.5px;
  line-height:1.85;
  max-width:760px;
}

/* ============ CTA 开通区 ============ */
.cta-section{
  background:var(--brand);
  color:#F6F5F0;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:420px;height:420px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,211,198,.22),transparent 68%);
}
.cta-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,520px);
  gap:56px;
  padding:88px 24px;
  align-items:start;
}
.cta-copy h2{
  color:#F6F5F0;
  font-size:44px;
  letter-spacing:-.03em;
  line-height:1.12;
}
.cta-copy p{
  margin-top:18px;
  color:#A9B3AE;
  font-size:17px;
  max-width:30em;
}
.cta-list{margin-top:30px;display:flex;flex-direction:column;gap:14px;}
.cta-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15.5px;color:#D6DCD9;
}
.cta-list .dot{
  flex:0 0 auto;
  width:8px;height:8px;
  margin-top:9px;
  border-radius:50%;
  background:var(--accent);
}
.form-card{
  background:rgba(246,245,240,.05);
  border:1px solid rgba(246,245,240,.14);
  border-radius:var(--radius);
  padding:32px;
}
.form-card h3{
  color:#F6F5F0;
  font-size:22px;
  margin-bottom:6px;
}
.form-card .form-note{color:#A9B3AE;font-size:14px;margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:13.5px;
  font-weight:700;
  color:#D6DCD9;
  margin-bottom:8px;
  letter-spacing:.02em;
}
.field input,
.field select,
.field textarea{
  width:100%;
  padding:13px 15px;
  background:rgba(246,245,240,.06);
  border:1px solid rgba(246,245,240,.2);
  border-radius:var(--radius-sm);
  color:#F6F5F0;
  font-size:15px;
  font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;}
.field select option{color:var(--ink);}
.field input::placeholder,
.field textarea::placeholder{color:#7E8884;}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  background:rgba(246,245,240,.1);
  box-shadow:0 0 0 4px rgba(199,244,60,.18);
}
.field.has-error input,
.field.has-error select,
.field.has-error textarea{
  border-color:var(--warn);
  box-shadow:0 0 0 4px rgba(255,122,61,.16);
}
.field-msg{
  display:none;
  margin-top:6px;
  font-size:13px;
  color:var(--warn);
  font-weight:600;
}
.field.has-error .field-msg{display:block;}
.form-privacy{
  margin-top:14px;
  font-size:12.5px;
  color:#8E9995;
  line-height:1.7;
}
.form-status{
  display:none;
  margin-top:16px;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  background:rgba(199,244,60,.14);
  border:1px solid rgba(199,244,60,.4);
  color:#E9FFAF;
  font-size:14px;
  font-weight:600;
}
.form-status.is-visible{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand);
  color:#A9B3AE;
  border-top:1px solid rgba(246,245,240,.1);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;
  padding:76px 0 52px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.footer-brand .brand-text{color:#F6F5F0;font-size:17px;font-weight:900;letter-spacing:-.03em;}
.footer-about{font-size:14.5px;line-height:1.85;color:#9AA49F;max-width:30em;}
.footer-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px;}
.footer-tags span{
  padding:5px 12px;
  border-radius:999px;
  border:1px solid rgba(246,245,240,.16);
  font-size:12.5px;
  color:#C4CCC8;
}
.footer-col h4{
  color:#F6F5F0;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14.5px;color:#A9B3AE;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14.5px;line-height:1.9;color:#9AA49F;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 0 28px;
  border-top:1px solid rgba(246,245,240,.12);
  font-size:13px;
  color:#7E8884;
  flex-wrap:wrap;
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .faq-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .faq-aside{position:static;}
  .cta-inner{grid-template-columns:minmax(0,1fr);gap:40px;padding:72px 24px;}
}
@media (max-width:980px){
  .nav-inner{min-height:66px;}
  .nav-toggle{display:flex;}
  .nav-tabs{
    position:absolute;
    left:0;right:0;
    top:100%;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    padding:16px 24px 22px;
    background:#FFFFFF;
    border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px rgba(14,20,18,.1);
    overflow:visible;
    display:none;
  }
  .nav-tabs.is-open{display:flex;}
  .nav-chip{justify-content:flex-start;border-radius:12px;padding:12px 16px;font-size:15.5px;}
  .chip-bar-wrap{top:66px;}
  .hero2 h1{font-size:46px;}
  .hero2-inner{padding:66px 24px 56px;}
  .alt-body{padding:30px 28px;}
  .alt-body h2{font-size:26px;}
  .alt-media{min-height:260px;}
  .alt-head h2{font-size:32px;}
  .alt-section{padding:64px 0 16px;}
  .faq-section{padding:72px 0;}
  .faq-aside h2{font-size:30px;}
  .cta-copy h2{font-size:34px;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .hero2 h1{font-size:38px;}
  .hero2-sub{font-size:17px;}
  .hero2-meta{grid-template-columns:1fr;gap:14px;margin-top:38px;}
  .alt-row{grid-template-columns:minmax(0,1fr);}
  .alt-row.is-reverse .alt-media{order:0;}
  .alt-media{min-height:220px;}
  .alt-body{padding:26px 22px;}
  .alt-body h2{font-size:23px;}
  .alt-body .lead{font-size:15.5px;}
  .rel-box{padding:24px 22px;}
  .faq-q{font-size:16.5px;padding:18px 20px;}
  .faq-a-inner{padding:0 20px 20px;}
  .cta-inner{padding:60px 24px;}
  .cta-copy h2{font-size:29px;}
  .form-card{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:56px 0 36px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .hero2-inner{padding:54px 18px 46px;}
  .hero2 h1{font-size:32px;line-height:1.14;}
  .hero2-sub{font-size:16px;}
  .hero2-cta .btn{width:100%;}
  .chip-bar{padding:14px 18px;}
  .alt-head h2{font-size:26px;}
  .btn{padding:13px 20px;font-size:15px;}
  .alt-foot{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root{
  --bg:#F6F5F0;
  --surface:#FFFFFF;
  --surface-2:#ECEAE3;
  --ink:#0E1412;
  --ink-2:#4C5652;
  --ink-3:#7B8580;
  --brand:#0F1B17;
  --accent:#C7F43C;
  --accent-2:#2ED3C6;
  --warn:#FF7A3D;
  --line:#DCD9D0;
  --shadow:0 12px 30px rgba(14,20,18,.08);
  --shadow-sm:0 6px 18px rgba(14,20,18,.06);
  --radius:16px;
  --radius-sm:12px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font:inherit;color:inherit;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-0.02em;line-height:1.25;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:40px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--ink-3);text-transform:uppercase;margin-bottom:14px;
}
.section-eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;}
h2{font-size:clamp(28px,3.2vw,40px);font-weight:900;letter-spacing:-0.03em;}
h3{font-size:20px;font-weight:800;}
.section-sub{margin-top:14px;color:var(--ink-2);font-size:16px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,245,240,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s ease,background .24s ease,border-color .24s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.95);
  box-shadow:0 8px 26px rgba(14,20,18,.08);
  border-bottom-color:var(--line);
}
.nav-inner{display:flex;align-items:center;gap:22px;height:72px;position:relative;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:900;font-size:17px;letter-spacing:0;
}
.brand-text{font-weight:900;font-size:17px;letter-spacing:-0.02em;color:var(--ink);white-space:nowrap;}
.nav-tabs{
  display:flex;align-items:center;gap:4px;
  background:var(--surface-2);
  padding:4px;border-radius:999px;
  margin-left:8px;
}
.nav-chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 16px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.nav-chip:hover{background:var(--surface);color:var(--ink);}
.nav-chip.is-active{background:var(--brand);color:var(--accent);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:17px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:-0.01em;
  border:1px solid transparent;
  transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--accent);color:#0E1412;box-shadow:0 8px 20px rgba(199,244,60,.28);}
.btn-primary:hover{background:var(--brand);color:var(--accent);transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,27,23,.22);}
.btn-ghost{border-color:rgba(246,245,240,.34);color:#F6F5F0;}
.btn-ghost:hover{background:#F6F5F0;color:var(--brand);transform:translateY(-2px);}
.btn-outline{border-color:var(--ink);color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:var(--accent);transform:translateY(-2px);}

/* ---------- Breadcrumb ---------- */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);padding:14px 0;flex-wrap:wrap;
}
.crumb a:hover{color:var(--ink);}
.crumb span.sep{color:var(--line);}
.crumb .current{color:var(--ink);font-weight:700;}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;background:var(--brand);color:#F6F5F0;
  overflow:hidden;padding:88px 0 80px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-1.png);
  background-size:cover;background-position:center;
  opacity:.20;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,27,23,.95) 0%,rgba(15,27,23,.78) 52%,rgba(15,27,23,.55) 100%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(199,244,60,.45);
  color:var(--accent);font-size:13px;font-weight:700;
  background:rgba(199,244,60,.08);
  margin-bottom:22px;
}
.cat-hero h1{
  font-size:clamp(36px,4.6vw,60px);
  font-weight:900;letter-spacing:-0.03em;line-height:1.08;
  color:#F6F5F0;
}
.cat-hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:20px;max-width:520px;color:#C9D2CD;font-size:17px;line-height:1.8;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:44px;
  padding-top:26px;border-top:1px solid rgba(246,245,240,.14);
}
.hero-stat strong{display:block;font-size:17px;font-weight:800;color:#F6F5F0;letter-spacing:-0.01em;}
.hero-stat span{font-size:13px;color:#A9B3AE;}
.hero-figure{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid rgba(246,245,240,.14);
  box-shadow:0 30px 60px rgba(0,0,0,.35);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:18px 20px;font-size:13px;color:#DCE3DF;
  background:linear-gradient(180deg,rgba(15,27,23,0),rgba(15,27,23,.88));
}

/* ---------- Layout: sidebar + cards ---------- */
.layout{display:grid;grid-template-columns:272px 1fr;gap:48px;align-items:start;}
.side-nav{position:sticky;top:104px;}
.side-title{
  font-size:13px;font-weight:800;letter-spacing:.08em;
  color:var(--ink-3);margin-bottom:16px;
}
.side-chips{display:flex;flex-direction:column;gap:8px;}
.side-chip{
  display:flex;align-items:center;gap:10px;
  padding:12px 16px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  font-size:14px;font-weight:600;color:var(--ink-2);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.side-chip i{
  font-style:normal;font-family:"SFMono-Regular",Consolas,monospace;
  font-size:12px;font-weight:700;color:var(--ink-3);
}
.side-chip:hover{border-color:var(--accent);color:var(--ink);transform:translateX(2px);}
.side-chip.is-active{background:var(--brand);border-color:var(--brand);color:var(--accent);}
.side-chip.is-active i{color:var(--accent-2);}
.side-note{
  margin-top:24px;padding:20px;border-radius:var(--radius);
  background:var(--surface-2);border-left:3px solid var(--accent);
  font-size:14px;color:var(--ink-2);line-height:1.75;
}
.side-note strong{display:block;color:var(--ink);font-size:15px;margin-bottom:6px;}

.group{margin-bottom:56px;scroll-margin-top:110px;}
.group:last-child{margin-bottom:0;}
.group-head{
  display:flex;align-items:baseline;gap:14px;
  padding-bottom:16px;margin-bottom:24px;
  border-bottom:1px solid var(--line);
}
.group-head h2{font-size:24px;font-weight:900;letter-spacing:-0.02em;}
.group-head span{font-size:13px;color:var(--ink-3);font-weight:600;}
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

.g-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.g-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow);}
.g-card-media{overflow:hidden;background:var(--surface-2);}
.g-card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease;}
.g-card:hover .g-card-media img{transform:scale(1.03);}
.g-card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.g-card-body h3{font-size:19px;}
.g-card-body p{color:var(--ink-2);font-size:15px;line-height:1.8;}
.g-card-foot{margin-top:auto;padding-top:8px;}

.chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:var(--surface-2);color:var(--ink-2);
  font-size:12px;font-weight:700;letter-spacing:.02em;
  white-space:nowrap;
}
.chip-accent{background:rgba(46,211,198,.14);color:#14796F;}
.chip-warn{background:rgba(255,122,61,.14);color:#B74A17;}

.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);
  padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.link-more::after{content:"→";transition:transform .2s ease;}
.link-more:hover{border-color:var(--accent);color:#14796F;}
.link-more:hover::after{transform:translateX(4px);}

/* ---------- Related ---------- */
.related{background:var(--surface-2);border-radius:24px;padding:40px;}
.related h2{font-size:22px;margin-bottom:8px;}
.related p{color:var(--ink-2);font-size:15px;margin-bottom:22px;}
.related-chips{display:flex;flex-wrap:wrap;gap:12px;}
.related-chips a{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:14px;font-weight:700;color:var(--ink);
  transition:border-color .2s ease,transform .2s ease,background .2s ease,color .2s ease;
}
.related-chips a:hover{border-color:var(--brand);background:var(--brand);color:var(--accent);transform:translateY(-2px);}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start;}
.faq-intro{position:sticky;top:104px;}
.faq-intro p{color:var(--ink-2);margin-top:14px;font-size:15px;}
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:760px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--accent);box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:700;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  background:var(--surface-2);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.faq-item[open] .faq-icon{background:var(--accent);transform:rotate(45deg);}
.faq-answer{padding:0 24px 22px;border-left:3px solid transparent;}
.faq-item[open] .faq-answer{border-left-color:var(--accent);}
.faq-answer p{color:var(--ink-2);font-size:15px;line-height:1.85;}

/* ---------- CTA / Form ---------- */
.cta{
  position:relative;background:var(--brand);color:#F6F5F0;
  border-radius:28px;overflow:hidden;padding:56px;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-3.webp);
  background-size:cover;background-position:center;opacity:.16;
}
.cta::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(15,27,23,.94),rgba(15,27,23,.72));
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.cta h2{color:#F6F5F0;font-size:clamp(26px,3vw,38px);}
.cta-text p{color:#B9C3BE;margin-top:16px;font-size:15px;}
.cta-points{display:flex;flex-direction:column;gap:12px;margin-top:26px;}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#D6DEDA;}
.cta-points li::before{content:"";flex-shrink:0;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-top:9px;}

.form-card{
  background:rgba(246,245,240,.06);
  border:1px solid rgba(246,245,240,.16);
  border-radius:20px;padding:28px;
  backdrop-filter:blur(6px);
}
.form-card h3{color:#F6F5F0;font-size:18px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:#A9B3AE;margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:700;color:#C9D2CD;margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;
  border-radius:12px;
  border:1px solid rgba(246,245,240,.2);
  background:rgba(15,27,23,.55);
  color:#F6F5F0;font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:96px;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#7E8A85;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(199,244,60,.16);
}
.field select option{background:var(--brand);color:#F6F5F0;}
.form-note{font-size:12px;color:#8E9995;margin-top:14px;line-height:1.7;}
.form-msg{
  display:none;margin-top:16px;padding:12px 16px;border-radius:12px;
  background:rgba(199,244,60,.12);border:1px solid rgba(199,244,60,.35);
  color:var(--accent);font-size:14px;
}
.form-msg.is-visible{display:block;}
.form-card .btn-primary{width:100%;margin-top:4px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand);color:#C9D2CD;margin-top:96px;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text{color:#F6F5F0;}
.footer-about{font-size:14px;line-height:1.85;color:#A9B3AE;max-width:340px;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-tags span{
  font-size:12px;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(246,245,240,.18);color:#C9D2CD;
}
.footer-col h4{font-size:14px;font-weight:700;color:#F6F5F0;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#A9B3AE;transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-col p{font-size:14px;color:#A9B3AE;line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(246,245,240,.12);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12px;color:#7E8A85;
}

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .layout{grid-template-columns:1fr;gap:32px;}
  .side-nav{position:static;}
  .side-chips{flex-direction:row;flex-wrap:wrap;}
  .side-chip{flex:0 0 auto;}
  .side-note{margin-top:20px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-intro{position:static;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-figure{max-width:560px;}
  .cta-inner{grid-template-columns:1fr;gap:36px;}
  .cta{padding:40px;border-radius:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-tabs{
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:12px;border-radius:16px;
    background:var(--surface);border:1px solid var(--line);
    box-shadow:var(--shadow);
    display:none;
  }
  .nav-tabs.is-open{display:flex;}
  .nav-chip{width:100%;padding:12px 16px;border-radius:12px;}
  .nav-toggle{display:flex;}
  .nav-actions .btn-sm{display:none;}
  .brand-text{font-size:15px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
}
@media (max-width:720px){
  .container{padding:0 18px;}
  .card-grid{grid-template-columns:1fr;}
  .cat-hero{padding:64px 0 56px;}
  .cat-hero h1{font-size:clamp(30px,8vw,40px);}
  .hero-sub{font-size:16px;}
  .hero-stats{gap:20px;}
  .related{padding:28px 22px;border-radius:20px;}
  .cta{padding:32px 22px;border-radius:20px;}
  .form-card{padding:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .group-head{flex-direction:column;gap:4px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .btn{padding:12px 20px;font-size:14px;width:100%;}
  .hero-cta{flex-direction:column;}
  .hero-cta .btn{width:100%;}
  .side-chip{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}