/* roulang page: index */
:root{
  --ink:#101216;
  --ink-soft:#2A2E36;
  --lime:#B6F03C;
  --clay:#E2542C;
  --bg:#F6F5F2;
  --card:#FFFFFF;
  --line:#E2E0DA;
  --muted:#6B6F76;
  --r-btn:8px;
  --r-card:16px;
  --r-img:10px;
  --shadow-1:0 1px 2px rgba(16,18,22,.04), 0 10px 30px -18px rgba(16,18,22,.18);
  --shadow-2:0 2px 4px rgba(16,18,22,.06), 0 18px 42px -20px rgba(16,18,22,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",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(--ink);
  font-family:var(--font-cn);font-size:16.5px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
::selection{background:var(--lime);color:var(--ink)}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,245,242,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:32px;height:84px;transition:height .3s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  position:relative;width:24px;height:24px;border-radius:7px;background:var(--ink);
  flex:0 0 24px;overflow:hidden;
}
.logo-mark::before{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--lime);transform:rotate(45deg)}
.logo-mark::after{content:"";position:absolute;right:3px;bottom:3px;width:5px;height:5px;border-radius:50%;background:var(--lime)}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);
  padding:6px 0;line-height:1.4;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--lime);transform:translateX(-50%);
  transition:width .24s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--ink);font-weight:700}
.nav-link:hover::after,.nav-link.is-active::after{width:100%}
.nav-link.is-active::after{background:var(--lime)}
.nav-cta{margin-left:8px}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border-radius:10px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);transition:transform .25s var(--ease),opacity .25s 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)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(16,18,22,.42);z-index:75;opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.nav-overlay.is-open{opacity:1;pointer-events:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;border:1px solid var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  padding-bottom:4px;position:relative;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:0;width:20px;height:1px;background:var(--ink);
  transition:width .26s var(--ease),background .22s var(--ease);
}
.btn-text:hover{color:var(--ink)}
.btn-text:hover::after{width:100%;background:var(--lime)}

/* ============ 板块通用 ============ */
.section{padding:52px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-title{font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.01em}
.section-desc{margin-top:10px;font-size:15px;color:var(--muted);max-width:620px}
.rule{height:1px;background:var(--line);border:0;margin:0}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;line-height:1;white-space:nowrap;
}
.badge-cat{background:rgba(226,84,44,.1);color:var(--clay)}
.badge-lime{background:rgba(182,240,60,.3);color:#3C4A0F}

/* ============ Hero ============ */
.hero{padding:44px 0 52px}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--font-num);font-size:12.5px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:20px;
}
.hero-eyebrow i{width:22px;height:2px;background:var(--lime);display:block}
.hero-title{font-size:56px;line-height:1.08;font-weight:800;letter-spacing:-.02em}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.75;color:var(--ink-soft);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:34px;
  font-size:13.5px;color:var(--muted);letter-spacing:.02em;
}
.hero-meta b{font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--ink)}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--shadow-1);
}
.hero-tag{
  position:absolute;right:18px;bottom:18px;
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 14px;border-radius:999px;
  background:var(--lime);color:var(--ink);font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.hero-foot{margin-top:52px;height:1px;background:var(--line)}

/* ============ 合集目录 ============ */
.catalog{display:grid;grid-template-columns:1fr 1fr;gap:0 56px}
.catalog-item{
  display:flex;align-items:center;gap:18px;height:64px;
  border-bottom:1px solid var(--line);padding:0 12px;
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.catalog-item:hover{background:var(--card);transform:translateX(4px)}
.catalog-num{
  font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--ink);
  min-width:34px;letter-spacing:.02em;
}
.catalog-item:hover .catalog-num{color:var(--clay)}
.catalog-name{font-size:16px;font-weight:600;flex:1}
.catalog-arrow{font-family:var(--font-num);font-size:16px;color:var(--muted);transition:color .2s var(--ease),transform .2s var(--ease)}
.catalog-item:hover .catalog-arrow{color:var(--ink);transform:translateX(3px)}

/* ============ 精选条目 ============ */
.feat-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:24px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.feat-big{grid-column:span 4;background:var(--ink);border-color:var(--ink);color:#fff;display:flex;flex-direction:column;gap:20px}
.feat-big:hover{transform:translateY(-2px)}
.feat-big img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img);transition:transform .4s var(--ease)}
.feat-big:hover img{transform:scale(1.03)}
.feat-big h3{font-size:26px;line-height:1.3;font-weight:700;letter-spacing:-.01em;color:#fff}
.feat-big p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72)}
.feat-big .feat-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.02em}
.feat-tall{grid-column:span 2;display:flex;flex-direction:column;gap:18px}
.feat-tall img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:var(--r-img);transition:transform .4s var(--ease)}
.feat-tall:hover img{transform:scale(1.03)}
.feat-tall h3{font-size:19px;line-height:1.45;font-weight:600}
.feat-card{grid-column:span 2;display:flex;flex-direction:column;gap:14px;padding:0;overflow:hidden}
.feat-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease)}
.feat-card:hover img{transform:scale(1.03)}
.feat-card .feat-body{padding:0 24px 24px;display:flex;flex-direction:column;gap:10px}
.feat-card h3{font-size:18px;line-height:1.5;font-weight:600}
.feat-card p{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ============ 最新信息 CMS ============ */
.cms-list{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.cms-card{
  display:flex;gap:20px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.cms-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.cms-cover{flex:0 0 200px;display:block;overflow:hidden;border-radius:var(--r-img)}
.cms-cover img{width:200px;height:130px;object-fit:cover;border-radius:var(--r-img);transition:transform .4s var(--ease)}
.cms-card:hover .cms-cover img{transform:scale(1.03)}
.cms-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:10px}
.cms-title{font-size:17.5px;line-height:1.5;font-weight:700}
.cms-title a:hover{color:var(--clay)}
.cms-excerpt{
  font-size:14.5px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-meta{
  margin-top:auto;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:var(--muted);letter-spacing:.02em;
}
.cms-meta .cms-date{font-family:var(--font-num)}
.cms-empty{
  grid-column:1 / -1;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;font-size:15px;color:var(--muted);
}

/* ============ 相关推荐条带 ============ */
.tstrip{position:relative}
.tstrip-nav{position:absolute;top:-72px;right:0;display:flex;gap:10px}
.tstrip-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--card);
  display:inline-flex;align-items:center;justify-content:center;font-family:var(--font-num);font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.tstrip-btn:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
.tstrip-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 2px 16px;scrollbar-width:none;
}
.tstrip-track::-webkit-scrollbar{display:none}
.tstrip-item{
  flex:0 0 280px;scroll-snap-align:start;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.tstrip-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.tstrip-item img{width:100%;height:150px;object-fit:cover;transition:transform .4s var(--ease)}
.tstrip-item:hover img{transform:scale(1.03)}
.tstrip-body{padding:16px 20px 20px;display:flex;flex-direction:column;gap:10px}
.tstrip-body h3{font-size:16px;line-height:1.55;font-weight:600}

/* ============ 收藏 / 分享 CTA ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 32px;min-height:120px;box-shadow:var(--shadow-1);
}
.cta-bar h2{font-size:22px;font-weight:700;line-height:1.4}
.cta-bar p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ FAQ ============ */
.faq{max-width:880px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:18px;font-weight:600;line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--clay)}
.faq-icon{position:relative;width:20px;height:20px;flex:0 0 20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-q[aria-expanded="true"] .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg)}
.faq-q[aria-expanded="true"] .faq-icon::before{background:var(--lime)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a p{padding:0 40px 24px 4px;font-size:16px;line-height:1.8;color:var(--ink-soft)}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:52px;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:56px}
.logo-footer .logo-text{color:#fff}
.logo-footer .logo-mark{background:#fff}
.logo-footer .logo-mark::before,.logo-footer .logo-mark::after{background:var(--lime)}
.footer-desc{margin-top:20px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:360px}
.footer-title{
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--lime);
  font-weight:700;margin-bottom:20px;
}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:15px;color:rgba(255,255,255,.72);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.subscribe{display:flex;align-items:center;gap:14px;border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:10px}
.subscribe input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;color:#fff;
  font-family:var(--font-cn);font-size:15px;padding:8px 0;
}
.subscribe input::placeholder{color:rgba(255,255,255,.42)}
.subscribe input:focus{border-color:var(--lime)}
.subscribe .subscribe-btn{
  font-size:14px;font-weight:700;color:var(--lime);letter-spacing:.02em;white-space:nowrap;
  transition:color .2s var(--ease);
}
.subscribe .subscribe-btn:hover{color:#fff}
.footer-note{margin-top:18px;font-size:13px;line-height:1.8;color:rgba(255,255,255,.5)}
.footer-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.02em;
}
.footer-bottom .num{font-family:var(--font-num)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 28px}
  .hero-grid{gap:40px}
  .catalog{gap:0 40px}
  .footer-grid{gap:40px}
}
@media (max-width:1023px){
  .section{padding:44px 0}
  .hero-title{font-size:44px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .feat-grid{grid-template-columns:repeat(4,1fr)}
  .feat-big{grid-column:span 4}
  .feat-tall{grid-column:span 4}
  .feat-card{grid-column:span 2}
  .cms-list{grid-template-columns:1fr}
}
@media (max-width:900px){
  .nav-wrap{height:64px}
  .main-nav{
    position:fixed;top:0;right:0;z-index:78;
    height:100vh;width:min(320px,86vw);
    background:#fff;flex-direction:column;align-items:flex-start;gap:6px;
    padding:96px 28px 32px;margin-left:0;
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    box-shadow:-16px 0 40px -24px rgba(16,18,22,.4);
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{font-size:18px;width:100%;padding:12px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-cta{display:none}
  .nav-cta-mobile{
    display:inline-flex;margin-top:24px;width:100%;background:var(--ink);color:#fff;
    border:1px solid var(--ink);
  }
  .nav-cta-mobile:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
  .nav-toggle{display:flex}
  .nav-overlay{display:block}
  .section-title{font-size:28px}
  .catalog{grid-template-columns:1fr}
  .tstrip-nav{display:none}
  .cta-bar{padding:24px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:36px 0}
  .hero{padding:24px 0 36px}
  .hero-title{font-size:34px}
  .hero-sub{font-size:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .section-title{font-size:26px}
  .feat-grid{grid-template-columns:1fr;gap:20px}
  .feat-big,.feat-tall,.feat-card{grid-column:span 1}
  .feat-big h3{font-size:22px}
  .cms-card{flex-direction:column;gap:14px}
  .cms-cover,.cms-cover img{flex:0 0 auto;width:100%;height:180px}
  .cms-title{font-size:16.5px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:480px){
  .hero-title{font-size:34px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .hero-actions .btn{width:100%}
  .subscribe{flex-wrap:wrap;gap:10px}
  .subscribe .subscribe-btn{width:100%;text-align:left}
}

/* roulang page: category1 */
:root{
  --ink:#101216;
  --ink-2:#2A2E36;
  --lime:#B6F03C;
  --clay:#E2542C;
  --bg:#F6F5F2;
  --card:#FFFFFF;
  --line:#E2E0DA;
  --muted:#6B6F76;
  --radius-btn:8px;
  --radius-card:16px;
  --radius-img:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(16,18,22,.04),0 10px 30px -18px rgba(16,18,22,.18);
  --shadow-2:0 2px 6px rgba(16,18,22,.06),0 22px 48px -24px rgba(16,18,22,.28);
  --font-cn:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-section:104px;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-cn)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num,.stat-num,.toc-num,.step-num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
::selection{background:var(--lime);color:var(--ink)}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.container{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  height:84px;
  background:rgba(246,245,242,1);
  border-bottom:1px solid transparent;
  transition:height .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.is-stuck{
  height:64px;
  background:rgba(246,245,242,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -22px rgba(16,18,22,.5);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;height:100%}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em}
.logo-mark{
  width:24px;height:24px;border-radius:7px;
  background:var(--ink);
  position:relative;flex:0 0 24px;
}
.logo-mark::before{
  content:"";position:absolute;inset:0;border-radius:7px;
  background:
    radial-gradient(circle at 32% 34%,var(--lime) 0 2.4px,transparent 2.6px),
    radial-gradient(circle at 68% 34%,var(--lime) 0 2.4px,transparent 2.6px),
    radial-gradient(circle at 32% 68%,var(--lime) 0 2.4px,transparent 2.6px),
    linear-gradient(115deg,transparent 46%,var(--lime) 46% 52%,transparent 52%);
}
.logo-text{font-size:17px;color:var(--ink);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15.5px;font-weight:500;color:var(--ink-2);
  padding:6px 0;transition:color .2s var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ink);font-weight:600}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;line-height:1.2;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--lime);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  padding-bottom:4px;position:relative;
}
.btn-link::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:20px;background:var(--ink);transition:width .2s var(--ease)}
.btn-link:hover::after{width:100%}
.nav-cta{flex:0 0 auto}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;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.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0}
.breadcrumb{font-size:12.5px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--lime)}
.breadcrumb .sep{color:#B9B6AF}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.cat-hero{padding:34px 0 0}
.cat-hero-inner{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  min-height:280px;padding-bottom:44px;border-bottom:1px solid var(--line);
}
.eyebrow{
  font-family:var(--font-num);font-size:13.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);margin-bottom:16px;display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:9px;height:9px;border-radius:3px;background:var(--lime);display:inline-block}
.cat-hero h1{
  font-size:56px;line-height:1.08;font-weight:800;letter-spacing:-.02em;margin-bottom:18px;
}
.cat-hero .lede{font-size:17px;color:var(--muted);max-width:44ch;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cat-hero-media{position:relative}
.cat-hero-media img{
  width:100%;height:280px;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-1);
}
.hero-badge{
  position:absolute;right:18px;bottom:18px;height:26px;display:inline-flex;align-items:center;
  padding:0 14px;border-radius:var(--radius-pill);background:var(--lime);color:var(--ink);
  font-family:var(--font-num);font-size:12px;letter-spacing:.06em;font-weight:600;
}
.hero-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:26px;font-size:13.5px;color:var(--muted);letter-spacing:.02em;
}
.hero-meta b{font-family:var(--font-num);color:var(--ink);font-weight:600}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sp-section) 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.015em}
.section-head h2::before{
  content:"";display:inline-block;width:4px;height:26px;background:var(--lime);border-radius:2px;
  margin-right:14px;vertical-align:-3px;
}
.section-head .sub{font-size:14.5px;color:var(--muted);margin-top:12px;max-width:62ch}

/* ---------- 目录清单 ---------- */
.toc-list{border-top:1px solid var(--line)}
.toc-item{border-bottom:1px solid var(--line);transition:background-color .2s var(--ease)}
.toc-item a{
  display:flex;align-items:center;gap:24px;padding:0 18px;height:64px;
  transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.toc-item a:hover{background:var(--card);transform:translateX(4px)}
.toc-num{font-size:20px;font-weight:600;color:var(--lime);flex:0 0 46px;letter-spacing:.02em}
.toc-name{font-size:17px;font-weight:600;color:var(--ink);flex:1 1 auto;min-width:0}
.toc-desc{font-size:14px;color:var(--muted);flex:0 0 320px;text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toc-arrow{flex:0 0 auto;color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease);font-size:16px}
.toc-item a:hover .toc-arrow{color:var(--ink);transform:translateX(4px)}

/* ---------- 图文两栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split h2{font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.015em;margin-bottom:20px}
.split p{color:var(--ink-2);margin-bottom:16px}
.split .check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;color:var(--ink-2);font-size:16px;
}
.split .check-list li::before{
  content:"";position:absolute;left:0;top:12px;width:10px;height:10px;border-radius:3px;background:var(--lime);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);box-shadow:var(--shadow-1)}
.split-media figcaption{font-size:12.5px;color:var(--muted);margin-top:12px}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:32px 28px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{font-size:40px;font-weight:700;line-height:1;letter-spacing:-.02em;color:var(--ink)}
.stat-num em{font-style:normal;color:var(--lime)}
.stat-label{font-size:13.5px;color:var(--muted);letter-spacing:.04em;margin-top:12px}
.stat p{font-size:14.5px;color:var(--ink-2);margin-top:10px}

/* ---------- 设备要点两列 ---------- */
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.cols-2 h3{font-size:22px;font-weight:600;margin-bottom:18px}
.line-list{border-top:1px solid var(--line)}
.line-list li{
  display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line);
}
.line-list .dot{width:8px;height:8px;border-radius:2px;background:var(--lime);margin-top:10px;flex:0 0 8px}
.line-list .txt{font-size:15.5px;color:var(--ink-2)}
.line-list .txt b{color:var(--ink);font-weight:600}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;padding:22px 0;display:flex;align-items:center;justify-content:space-between;
  gap:20px;cursor:pointer;text-align:left;font-size:18px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:#000}
.faq-q .icon{
  position:relative;width:20px;height:20px;flex:0 0 20px;
  transition:transform .2s var(--ease);
}
.faq-q .icon::before,.faq-q .icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
}
.faq-q .icon::before{left:0;top:9px;width:20px;height:2px}
.faq-q .icon::after{left:9px;top:0;width:2px;height:20px;transition:opacity .2s var(--ease)}
.faq-item.is-open .faq-q .icon{transform:rotate(90deg)}
.faq-item.is-open .faq-q .icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease),padding .28s var(--ease);padding:0}
.faq-item.is-open .faq-a{max-height:360px;padding-bottom:22px}
.faq-a p{font-size:16px;color:var(--muted);max-width:82ch}

/* ---------- CTA 条 ---------- */
.cta-bar{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-1);flex-wrap:wrap;
}
.cta-bar h3{font-size:22px;font-weight:700;margin-bottom:8px}
.cta-bar p{font-size:15px;color:var(--muted)}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 相关分类 ---------- */
.related-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.related-links .label{font-size:13.5px;color:var(--muted);letter-spacing:.06em;margin-right:6px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--line);
  border-radius:var(--radius-pill);background:#fff;font-size:14.5px;font-weight:500;color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);margin-top:var(--sp-section);padding:72px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px;padding-bottom:48px}
.logo-footer .logo-text{color:#fff}
.logo-footer .logo-mark{background:var(--lime)}
.logo-footer .logo-mark::before{
  background:
    radial-gradient(circle at 32% 34%,var(--ink) 0 2.4px,transparent 2.6px),
    radial-gradient(circle at 68% 34%,var(--ink) 0 2.4px,transparent 2.6px),
    radial-gradient(circle at 32% 68%,var(--ink) 0 2.4px,transparent 2.6px),
    linear-gradient(115deg,transparent 46%,var(--ink) 46% 52%,transparent 52%);
}
.footer-desc{font-size:14.5px;color:rgba(255,255,255,.6);margin-top:18px;max-width:38ch;line-height:1.8}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--lime);font-weight:600;margin-bottom:20px}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:15px;color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.subscribe{display:flex;align-items:center;gap:14px;border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:10px}
.subscribe input{
  flex:1 1 auto;min-width:0;background:transparent;border:0;color:#fff;padding:8px 0;font-size:15px;outline:none;
}
.subscribe input::placeholder{color:rgba(255,255,255,.42)}
.subscribe:focus-within{border-bottom-color:var(--lime)}
.subscribe-btn{
  background:var(--lime);color:var(--ink);border:0;border-radius:var(--radius-btn);
  padding:10px 20px;font-size:14px;font-weight:600;cursor:pointer;transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.subscribe-btn:hover{background:#fff;transform:translateY(-2px)}
.footer-note{font-size:13.5px;color:rgba(255,255,255,.5);margin-top:16px;line-height:1.8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sp-section:88px}
  .cat-hero h1{font-size:48px}
  .toc-desc{flex-basis:240px}
}
@media (max-width:1023px){
  :root{--sp-section:80px}
  .container{padding:0 24px}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(330px,88vw);background:#fff;
    flex-direction:column;align-items:flex-start;justify-content:flex-start;
    padding:96px 28px 40px;gap:0;transform:translateX(100%);
    transition:transform .28s var(--ease);box-shadow:-16px 0 40px -28px rgba(16,18,22,.5);
    z-index:75;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{font-size:18px;width:100%;padding:16px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--ink)}
  .nav-cta-mobile{display:inline-flex;margin-top:24px;width:100%}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px;min-height:0;padding-bottom:36px}
  .cat-hero-media img{height:240px}
  .split{grid-template-columns:1fr;gap:32px}
  .cols-2{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:899px){
  .cat-hero h1{font-size:38px}
  .section-head h2,.split h2{font-size:28px}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line)}
  .stat:last-child{border-bottom:0}
  .toc-item a{height:auto;padding:18px 12px;flex-wrap:wrap;gap:14px}
  .toc-desc{flex:1 1 100%;text-align:left;white-space:normal;padding-left:46px}
}
@media (max-width:520px){
  :root{--sp-section:60px}
  .container{padding:0 20px}
  body{font-size:16px}
  .cat-hero{padding-top:24px}
  .cat-hero h1{font-size:34px}
  .cat-hero-media img{height:200px}
  .section-head h2,.split h2{font-size:26px}
  .cta-bar{padding:24px 22px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .subscribe{flex-wrap:wrap}
  .subscribe input{flex:1 1 100%}
  .subscribe-btn{width:100%}
  .hero-actions .btn{width:100%}
  .hero-actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
/* ============ 设计令牌 ============ */
:root{
  --ink:#101216;
  --ink-2:#2A2E36;
  --lime:#B6F03C;
  --clay:#E2542C;
  --bg:#F6F5F2;
  --card:#FFFFFF;
  --line:#E2E0DA;
  --muted:#6B6F76;
  --radius-btn:8px;
  --radius-card:16px;
  --radius-img:10px;
  --shadow-1:0 1px 2px rgba(16,18,22,.04),0 10px 30px -18px rgba(16,18,22,.18);
  --shadow-2:0 2px 4px rgba(16,18,22,.05),0 18px 42px -20px rgba(16,18,22,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",sans-serif;
  --sec:104px;
}
/* ============ 基础 ============ */
*,*::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:var(--font-cn);font-size:16.5px;line-height:1.85;font-weight:400;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;background:transparent;border-bottom:1px solid transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),backdrop-filter .2s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,245,242,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:40px;height:84px;transition:height .2s var(--ease)}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;margin-right:auto;flex:none}
.logo-mark{position:relative;width:24px;height:24px;border-radius:7px;background:var(--ink);flex:none}
.logo-mark::before{
  content:"";position:absolute;inset:0;margin:auto;width:10px;height:10px;
  background:var(--lime);border-radius:2px;transform:rotate(45deg);
}
.logo-mark::after{content:"";position:absolute;right:4px;bottom:4px;width:5px;height:5px;border-radius:50%;background:var(--lime)}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
.main-nav{display:flex;align-items:center;gap:32px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--ink-2);padding:6px 0}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;background:var(--lime);
  transition:width .2s var(--ease),left .2s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{width:100%;left:0}
.nav-cta{flex:none}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--card);
  border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;flex:none;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;padding:14px 26px;
  transition:all .2s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px;border-radius:999px}
.btn-block{width:100%}
.link-more{
  position:relative;display:inline-block;font-size:14px;font-weight:600;color:var(--ink);padding-bottom:3px;
}
.link-more::after{content:"";position:absolute;left:0;bottom:0;width:20px;height:1px;background:var(--ink);transition:width .2s var(--ease)}
.link-more:hover::after{width:100%}
/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-cat{background:rgba(226,84,44,.09);color:var(--clay)}
.badge-lime{background:var(--lime);color:var(--ink)}
/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:var(--muted);padding:30px 0 0;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:#8AA82A}
.breadcrumb .sep{color:#C9C6BE}
.breadcrumb .current{color:var(--ink);font-weight:700;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* ============ 文章头部 ============ */
.article-head{max-width:900px;padding:22px 0 36px}
.article-title{
  font-size:clamp(32px,4vw,48px);line-height:1.12;font-weight:800;letter-spacing:-.02em;
  margin:16px 0 18px;max-width:22em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);letter-spacing:.02em}
.article-meta a{color:var(--clay);font-weight:600}
.article-meta a:hover{color:var(--ink)}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C9C6BE;display:inline-block}
/* ============ 封面 ============ */
.article-cover{margin:0 0 52px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:12.5px;color:var(--muted);padding:12px 22px;border-top:1px solid var(--line)}
/* ============ 两栏阅读区 ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:56px;align-items:start;padding-bottom:var(--sec)}
.article-col{min-width:0}
.article-body{max-width:760px;font-size:16.5px;line-height:1.9}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;font-size:28px;line-height:1.32;font-weight:700;letter-spacing:-.01em;
  margin:2em 0 .8em;padding-left:16px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;background:var(--lime);border-radius:2px}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;margin:1.7em 0 .6em}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em}
.article-body li{margin:.4em 0}
.article-body ul{list-style:none}
.article-body ul li{position:relative}
.article-body ul li::before{content:"";position:absolute;left:-1.1em;top:.72em;width:7px;height:7px;background:var(--lime);border-radius:1px}
.article-body ol{list-style:decimal}
.article-body ol li::marker{color:var(--clay);font-family:var(--font-num);font-weight:600}
.article-body blockquote{
  margin:1.8em 0;border-left:3px solid var(--lime);background:#F0EEE9;
  padding:20px 24px;border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;border-radius:var(--radius-img);margin:1.6em 0}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:8px}
.article-body a{color:var(--ink);font-weight:500;border-bottom:1px solid var(--lime)}
.article-body a:hover{color:#7E9B22}
.article-body table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:15px}
.article-body th{background:var(--ink);color:#fff;text-align:left;padding:12px 14px;font-weight:600}
.article-body td{border-bottom:1px solid var(--line);padding:12px 14px}
.article-body code{font-family:var(--font-num);background:#EAE8E3;padding:2px 6px;border-radius:4px;font-size:.92em}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
/* ============ 空态 ============ */
.empty-state{
  max-width:760px;background:var(--card);border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:52px 24px;text-align:center;
}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:20px}
/* ============ 侧栏 ============ */
.article-side{position:sticky;top:96px;min-width:0}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1)}
.side-title{font-size:13px;letter-spacing:.08em;font-weight:700;color:var(--ink);margin:0 0 14px}
.side-title + .toc{margin-bottom:26px}
.toc{display:flex;flex-direction:column;gap:1px}
.toc a{
  display:block;font-size:14px;line-height:1.6;color:var(--muted);
  padding:7px 0 7px 14px;border-left:2px solid transparent;transition:all .2s var(--ease);
}
.toc a:hover{color:var(--ink)}
.toc a.is-current{color:var(--ink);font-weight:600;border-left-color:var(--lime)}
.toc-empty{font-size:13.5px;color:var(--muted)}
.side-links{list-style:none;border-top:1px solid var(--line);margin-bottom:24px}
.side-links li{border-bottom:1px solid var(--line)}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;font-size:14.5px;color:var(--ink-2);
}
.side-links a span.arw{font-family:var(--font-num);color:var(--muted);transition:transform .2s var(--ease)}
.side-links a:hover{color:var(--ink)}
.side-links a:hover span.arw{transform:translateX(3px);color:var(--clay)}
/* ============ 标签条 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:46px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);font-size:13px;color:var(--ink-2);
  transition:all .2s var(--ease);
}
.tag:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
/* ============ 收藏分享通栏 ============ */
.cta-band{
  margin-top:56px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 32px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  box-shadow:var(--shadow-1);
}
.cta-band h3{font-size:22px;font-weight:700;letter-spacing:-.01em;margin-bottom:6px}
.cta-band p{font-size:14.5px;color:var(--muted);margin:0}
.cta-actions{display:flex;gap:12px;flex:none}
/* ============ 上/下一篇 ============ */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.post-nav a{
  display:block;background:var(--card);border:1px solid var(--line);border-top:2px solid var(--line);
  border-radius:var(--radius-card);padding:20px 22px;transition:all .2s var(--ease);
}
.post-nav a:hover{border-top-color:var(--lime);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.post-nav .label{display:block;font-size:12.5px;letter-spacing:.06em;color:var(--muted);margin-bottom:8px}
.post-nav .t{font-size:16px;font-weight:600;line-height:1.55}
.post-nav .next{text-align:right}
/* ============ 相关推荐 ============ */
.related{margin-top:72px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.sec-title{font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.sec-sub{font-size:13.5px;color:var(--muted);margin-top:6px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D6D3CB}
.card-thumb{overflow:hidden}
.card-thumb img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .48s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:20px 22px}
.card-body h3{font-size:17px;font-weight:600;line-height:1.55;margin-bottom:8px}
.card-body .time{font-size:13px;color:var(--muted)}
.back-row{display:flex;justify-content:center;margin-top:40px}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:80px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px}
.logo-footer .logo-text{color:#fff}
.logo-footer .logo-mark{background:#fff}
.logo-footer .logo-mark::before,.logo-footer .logo-mark::after{background:var(--lime)}
.footer-desc{font-size:14.5px;line-height:1.85;margin-top:16px;max-width:340px;color:rgba(255,255,255,.62)}
.footer-title{font-size:13px;letter-spacing:.08em;font-weight:700;color:var(--lime);margin-bottom:18px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:12px}
.footer-links a{display:inline-block;font-size:14.5px;color:rgba(255,255,255,.72)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.subscribe{display:flex;align-items:center;gap:12px;border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:6px}
.subscribe input{
  flex:1;min-width:0;background:transparent;border:0;border-bottom:1px solid transparent;
  color:#fff;font-size:14.5px;padding:8px 0;
}
.subscribe input::placeholder{color:rgba(255,255,255,.45)}
.subscribe input:focus{outline:none;border-bottom-color:var(--lime)}
.subscribe-btn{
  border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:999px;
  padding:8px 18px;font-size:13.5px;font-weight:600;transition:all .2s var(--ease);flex:none;
}
.subscribe-btn:hover{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.footer-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:14px}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);animation:rv .48s var(--ease) forwards}
.reveal:nth-child(2){animation-delay:.06s}
.reveal:nth-child(3){animation-delay:.12s}
@keyframes rv{to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s!important;transition-duration:.001s!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sec:80px}
  .container{padding:0 28px}
  .article-layout{gap:40px}
}
@media (max-width:1023px){
  :root{--sec:72px}
  .nav-wrap{gap:20px}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);
    background:var(--card);border-left:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:96px 28px 32px;transform:translateX(100%);
    transition:transform .28s var(--ease);z-index:92;overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{font-size:18px;font-weight:500;padding:16px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-cta{display:none}
  .nav-cta-mobile{display:inline-flex;margin-top:26px}
  .nav-toggle{display:flex;margin-left:auto}
  body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(16,18,22,.42);z-index:85}
  body.nav-open{overflow:hidden}
  .article-layout{grid-template-columns:1fr;gap:0}
  .article-side{position:static;margin-top:52px}
  .article-body{max-width:100%}
  .empty-state{max-width:100%}
}
@media (max-width:899px){
  .article-cover{margin-bottom:40px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:767px){
  :root{--sec:60px}
  .container{padding:0 20px}
  body{font-size:16px}
  .article-title{font-size:34px;line-height:1.16}
  .article-body h2{font-size:23px}
  .article-body h3{font-size:19px}
  .post-nav{grid-template-columns:1fr}
  .post-nav .next{text-align:left}
  .sec-title{font-size:22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .article-title{font-size:30px}
  .related-grid{grid-template-columns:1fr}
  .breadcrumb .current{max-width:180px}
  .side-card{padding:20px}
  .tag{height:30px;font-size:12.5px}
}

/* roulang page: category2 */
:root{
  --ink:#101216;
  --ink-soft:#2A2E36;
  --lime:#B6F03C;
  --clay:#E2542C;
  --bg:#F6F5F2;
  --card:#FFFFFF;
  --line:#E2E0DA;
  --muted:#6B6F76;
  --radius-btn:8px;
  --radius-card:16px;
  --radius-img:10px;
  --shadow-1:0 1px 2px rgba(16,18,22,.04),0 10px 30px -18px rgba(16,18,22,.18);
  --shadow-2:0 2px 4px rgba(16,18,22,.05),0 22px 44px -22px rgba(16,18,22,.26);
  --font-cn:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"Space Grotesk","Inter",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:4px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,245,242,.96);
  transition:background-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(246,245,242,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:84px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .nav-wrap{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{
  position:relative;width:24px;height:24px;border-radius:7px;
  background:var(--ink);flex:none;
}
.logo-mark::after{
  content:"";position:absolute;left:5px;top:5px;width:9px;height:9px;
  border-radius:2px;background:var(--lime);
  box-shadow:6px 6px 0 -1px rgba(182,240,60,.45);
}
.logo-text{font-weight:800;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15.5px;font-weight:500;color:var(--ink-soft);
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--lime);
  transition:left .28s var(--ease),right .28s var(--ease);
}
.nav-link:hover,.nav-link.is-active{color:var(--ink)}
.nav-link:hover::after,.nav-link.is-active::after{left:0;right:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;background:transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--clay);color:#fff;transform:translateY(-2px)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn-light{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-light:hover{background:var(--clay);border-color:var(--clay);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.nav-cta{flex:none}
.nav-cta-mobile{display:none}
.nav-toggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;flex:none;
}
.nav-toggle span{width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .28s 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)}

/* ---------- Page top ---------- */
.page-top{padding:26px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted)}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--clay)}
.breadcrumb .sep{color:#B9B6AE}
.breadcrumb .current{color:var(--ink);font-weight:700}

/* ---------- Hero ---------- */
.hero-cat{position:relative;margin-top:24px;height:360px;overflow:hidden;display:flex;align-items:flex-end}
.hero-cat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-cat::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,18,22,.30) 0%,rgba(16,18,22,.72) 68%,rgba(16,18,22,.86) 100%);
}
.hero-cat-inner{position:relative;z-index:2;color:#fff;padding-bottom:44px;width:100%}
.hero-cat h1{
  font-size:56px;line-height:1.08;font-weight:800;letter-spacing:-.02em;
  margin:0 0 12px;max-width:18em;
}
.hero-cat-note{
  font-size:13px;letter-spacing:.02em;color:rgba(255,255,255,.82);max-width:44em;
}

/* ---------- Sections ---------- */
main{padding-bottom:8px}
.section{margin-bottom:104px}
.section-first{margin-top:56px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.section-head h2{font-size:36px;line-height:1.2;font-weight:700;letter-spacing:-.01em}
.h2-bar{position:relative;padding-left:18px}
.h2-bar::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;
  border-radius:2px;background:var(--clay);
}
.section-sub{color:var(--muted);font-size:15.5px;max-width:660px;margin-top:12px}
.link-arrow{
  position:relative;display:inline-block;font-size:14.5px;font-weight:600;color:var(--ink);
  padding-bottom:4px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;width:20px;height:1px;background:var(--ink);
  transition:width .28s var(--ease),background-color .2s var(--ease);
}
.link-arrow:hover::after{width:100%;background:var(--clay)}

/* ---------- Facts ---------- */
.facts{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.fact{padding:30px 26px;border-right:1px solid var(--line)}
.fact:last-child{border-right:0}
.fact-num{font-family:var(--font-num);font-size:32px;font-weight:700;line-height:1.1;letter-spacing:-.02em}
.fact-num small{font-size:14px;font-weight:500;color:var(--clay);margin-left:4px}
.fact-label{font-size:13.5px;color:var(--muted);margin-top:8px}

/* ---------- Stagger grid ---------- */
.stagger-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.stagger-col{display:flex;flex-direction:column;gap:36px}
.stagger-col.right{margin-top:72px}
.tile{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .28s var(--ease),border-color .2s var(--ease);
}
.tile:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D7D4CC}
.tile-media{margin:14px 14px 0;border-radius:12px;overflow:hidden}
.tile-media img{width:100%;height:210px;object-fit:cover;transition:transform .48s var(--ease)}
.tile:hover .tile-media img{transform:scale(1.03)}
.tile-tall .tile-media img{height:300px}
.tile-body{padding:20px 24px 26px}
.tile-index{font-family:var(--font-num);font-size:13px;letter-spacing:.1em;color:var(--clay);font-weight:500}
.tile-body h3{font-size:22px;line-height:1.35;font-weight:600;margin:10px 0 8px;letter-spacing:-.01em}
.tile-body p{font-size:15px;color:var(--muted);line-height:1.75}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:999px;font-size:12px;letter-spacing:.02em;
  background:rgba(226,84,44,.10);color:var(--clay);
}
.badge-lime{background:rgba(182,240,60,.24);color:#3C5B00}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.step{padding-top:22px;border-top:2px solid var(--ink)}
.step-num{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--clay);letter-spacing:.02em}
.step h3{font-size:19px;font-weight:600;margin:10px 0 8px}
.step p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media img{width:100%;height:340px;object-fit:cover;border-radius:var(--radius-card);box-shadow:var(--shadow-1)}
.split-body h3{font-size:22px;font-weight:600;margin-bottom:14px}
.split-body > p{color:var(--muted);font-size:15.5px}
.stage-list{margin-top:24px;border-top:1px solid var(--line)}
.stage-list li{
  display:flex;gap:16px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.stage-list .num{font-size:14px;color:var(--clay);font-weight:700;padding-top:2px;flex:none}
.stage-list strong{display:block;font-size:16px;font-weight:600}
.stage-list span{font-size:14.5px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:18px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{
  content:"+";font-family:var(--font-num);font-size:22px;line-height:1;
  color:var(--clay);flex:none;
  transition:transform .3s var(--ease);
}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-answer{padding:0 0 26px;max-width:880px;color:#3C414A;font-size:16px;line-height:1.85}

/* ---------- Rail ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.rail-nav{display:flex;gap:10px}
.rail-btn{
  width:42px;height:42px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.rail-btn:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:10px;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none}
.rail-item{
  flex:0 0 280px;scroll-snap-align:start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .28s var(--ease);
}
.rail-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.rail-item img{width:100%;height:150px;object-fit:cover}
.rail-body{padding:16px 18px 20px}
.rail-body h3{font-size:16.5px;font-weight:600;line-height:1.5;margin:10px 0 6px}
.rail-body .rail-note{font-size:13.5px;color:var(--muted)}

/* ---------- CTA ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 36px;box-shadow:var(--shadow-1);
}
.cta-bar h2{font-size:24px;font-weight:700;letter-spacing:-.01em}
.cta-bar p{font-size:14.5px;color:var(--muted);margin-top:6px}
.cta-actions{display:flex;gap:12px;flex:none}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:80px 0 32px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:48px}
.logo-footer{color:#fff;margin-bottom:18px}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.58);max-width:360px}
.footer-title{font-size:13px;letter-spacing:.08em;font-weight:600;color:var(--lime);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{display:inline-block;font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.subscribe{display:flex;align-items:flex-end;gap:14px;border-bottom:1px solid rgba(255,255,255,.24);padding-bottom:8px;transition:border-color .2s var(--ease)}
.subscribe:focus-within{border-bottom-color:var(--lime)}
.subscribe input{flex:1;min-width:0;background:transparent;border:0;padding:8px 0;color:#fff;outline:none}
.subscribe input::placeholder{color:rgba(255,255,255,.42)}
.subscribe-btn{background:transparent;border:0;color:var(--lime);font-weight:600;padding:8px 4px;cursor:pointer;transition:color .2s var(--ease)}
.subscribe-btn:hover{color:#fff}
.footer-note{font-size:13px;color:rgba(255,255,255,.48);margin-top:14px;line-height:1.75}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .container{padding:0 28px}
  .nav-wrap{gap:20px}
  .main-nav{gap:24px}
}
@media (max-width:1023px){
  .section{margin-bottom:80px}
  .hero-cat h1{font-size:42px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .main-nav{
    position:fixed;top:0;right:0;z-index:70;
    width:min(320px,86vw);height:100vh;
    flex-direction:column;align-items:flex-start;gap:0;
    padding:96px 24px 32px;margin:0;
    background:#fff;box-shadow:-24px 0 48px -32px rgba(16,18,22,.45);
    transform:translateX(102%);
    transition:transform .32s var(--ease);
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-link{width:100%;font-size:18px;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav-link::after{display:none}
  .nav-link.is-active{color:var(--clay)}
  .nav-cta-mobile{display:inline-flex;width:100%;margin-top:24px}
  .facts{grid-template-columns:1fr 1fr}
  .fact:nth-child(2){border-right:0}
  .fact:nth-child(1),.fact:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:899px){
  .stagger-grid{grid-template-columns:1fr;gap:28px}
  .stagger-col.right{margin-top:0}
  .stagger-col{gap:28px}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media img{height:280px}
  .steps{grid-template-columns:1fr;gap:26px}
  .hero-cat{height:300px}
  .hero-cat h1{font-size:38px}
  .section-head h2{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  .section{margin-bottom:64px}
  .section-head{margin-bottom:28px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .rail-item{flex:0 0 240px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  body{font-size:16px}
  .hero-cat{height:240px;margin-top:16px}
  .hero-cat h1{font-size:34px;margin-bottom:8px}
  .hero-cat-inner{padding-bottom:26px}
  .section-head h2{font-size:26px}
  .facts{grid-template-columns:1fr}
  .fact{border-right:0;border-bottom:1px solid var(--line)}
  .fact:last-child{border-bottom:0}
  .tile-body{padding:18px 20px 22px}
  .tile-media img{height:180px}
  .tile-tall .tile-media img{height:220px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-bar h2{font-size:21px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .tile:hover,.rail-item:hover,.btn:hover{transform:none !important}
}