/* roulang page: index */
:root{
    --ink:#0E1613;
    --ink-soft:#16211D;
    --paper:#F6F6F1;
    --card:#FFFFFF;
    --lime:#C6F24E;
    --teal:#1FA37A;
    --orange:#FF7A45;
    --text:#14201C;
    --muted:#5C6A64;
    --line:#E2E5DC;
    --dtext:#EDF1EC;
    --dmuted:#9AA8A1;
    --dline:rgba(255,255,255,.08);
    --r-sm:12px;
    --r-lg:20px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(14,22,19,.04);
    --sh-2:0 12px 32px rgba(14,22,19,.08);
    --ease:cubic-bezier(.22,.61,.36,1);
    --nav-h:70px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:150px;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.25;}
  p{margin:0 0 1.1em;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .num,time,.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  .section{padding:96px 0;}
  .section-dark{background:var(--ink);color:var(--dtext);}
  .section-dark h2,.section-dark h3{color:var(--dtext);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12.5px;font-weight:700;letter-spacing:.08em;
    color:var(--teal);text-transform:uppercase;
  }
  .section-dark .eyebrow{color:var(--lime);}
  .sec-head{max-width:720px;margin-bottom:48px;}
  .sec-head h2{font-size:clamp(1.6rem,3vw,2.5rem);margin:14px 0 16px;}
  .sec-head p{color:var(--muted);margin:0;max-width:640px;}
  .section-dark .sec-head p{color:var(--dmuted);}

  /* ---------- 头部导航 ---------- */
  .site-header{position:sticky;top:12px;z-index:60;padding:0 12px;}
  .nav-card{
    max-width:1200px;margin:0 auto;
    display:flex;align-items:center;gap:14px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:16px;
    padding:10px 14px;
    box-shadow:var(--sh-1);
    transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  }
  body.is-scrolled .nav-card{
    background:var(--ink-soft);
    border-color:var(--dline);
    box-shadow:var(--sh-2);
  }
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:16px;color:var(--text);white-space:nowrap;transition:color .3s var(--ease);}
  body.is-scrolled .brand{color:var(--dtext);}
  .brand-ico{width:30px;height:30px;border-radius:9px;background:var(--ink);color:var(--lime);display:grid;place-items:center;flex:none;}
  body.is-scrolled .brand-ico{background:var(--lime);color:var(--ink);}
  .brand-ico svg{width:17px;height:17px;}
  .brand .hl{position:relative;}
  .brand .hl::after{content:"";position:absolute;left:1px;right:1px;bottom:-3px;height:3px;border-radius:2px;background:var(--lime);}
  .nav-mini{display:flex;align-items:center;gap:8px;margin-left:auto;}
  .mini-card{
    display:inline-flex;align-items:center;gap:6px;
    padding:8px 14px;border:1px solid var(--line);border-radius:var(--r-sm);
    font-size:13.5px;font-weight:600;color:var(--text);
    transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
  }
  .mini-card svg{width:16px;height:16px;color:var(--teal);}
  .mini-card:hover{transform:translateY(-2px);border-color:var(--lime);}
  .mini-card.is-active{background:var(--lime);border-color:var(--lime);color:var(--ink);}
  .mini-card.is-active svg{color:var(--ink);}
  body.is-scrolled .mini-card{color:var(--dtext);border-color:var(--dline);}
  body.is-scrolled .mini-card:hover{border-color:var(--lime);}
  body.is-scrolled .mini-card.is-active{background:var(--lime);color:var(--ink);border-color:var(--lime);}
  .nav-right{display:flex;align-items:center;gap:10px;margin-left:8px;}
  .hamburger{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:transparent;cursor:pointer;align-items:center;justify-content:center;
  }
  body.is-scrolled .hamburger{border-color:var(--dline);color:var(--dtext);}
  .hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative;}
  .hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;}
  .hamburger span::before{top:-6px;}
  .hamburger span::after{top:6px;}

  .mobile-panel{
    position:fixed;inset:0;z-index:80;background:var(--ink);
    padding:24px 20px 32px;display:flex;flex-direction:column;gap:18px;
    color:var(--dtext);overflow-y:auto;
  }
  .mobile-panel[hidden]{display:none;}
  .mobile-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .mobile-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--dline);background:transparent;color:var(--dtext);font-size:20px;line-height:1;cursor:pointer;}
  .mobile-grid{display:grid;gap:12px;}
  .mobile-grid a{
    display:flex;align-items:center;gap:12px;padding:16px 18px;border:1px solid var(--dline);
    border-radius:14px;background:rgba(255,255,255,.04);font-weight:700;
    transition:border-color .25s var(--ease),transform .25s var(--ease),background .25s var(--ease);
  }
  .mobile-grid a:hover,.mobile-grid a.is-active{border-color:var(--lime);transform:translateY(-2px);background:rgba(198,242,78,.10);}
  .mobile-grid a svg{width:20px;height:20px;color:var(--lime);flex:none;}
  .mobile-grid small{display:block;font-size:12.5px;font-weight:400;color:var(--dmuted);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:50px;padding:0 26px;border-radius:var(--r-pill);
    font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
    transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
  }
  .btn svg{width:17px;height:17px;transition:transform .25s var(--ease);}
  .btn:hover svg{transform:translateX(3px);}
  .btn-lime{background:var(--lime);color:var(--ink);}
  .btn-lime:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
  .btn-lime:active{transform:translateY(0);}
  .btn-ghost{border-color:var(--line);color:var(--text);}
  .btn-ghost:hover{transform:translateY(-2px);background:rgba(14,22,19,.06);}
  .btn-ghost-dark{border-color:var(--dline);color:var(--dtext);}
  .btn-ghost-dark:hover{transform:translateY(-2px);background:rgba(255,255,255,.08);}
  .btn-sm{min-height:44px;padding:0 20px;font-size:14px;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--teal);font-size:14.5px;}
  .link-arrow svg{width:16px;height:16px;transition:transform .25s var(--ease);}
  .link-arrow:hover svg{transform:translateX(4px);}
  a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
    outline:2px solid var(--lime);outline-offset:2px;border-radius:var(--r-sm);
  }

  /* ---------- 徽章 / 标签 ---------- */
  .tag{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;}
  .tag-lime{background:rgba(198,242,78,.30);color:#3F5A0A;}
  .tag-teal{background:rgba(31,163,122,.13);color:var(--teal);}
  .tag-orange{background:rgba(255,122,69,.14);color:#C24E1E;}

  /* ---------- Hero ---------- */
  .hero{padding:56px 0 8px;}
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
  .hero h1{font-size:clamp(2rem,5vw,4.25rem);margin:18px 0 20px;}
  .hero h1 em{font-style:normal;color:var(--teal);}
  .hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px;}
  .hero-facts{display:flex;flex-wrap:wrap;gap:28px;padding-top:24px;border-top:1px dashed rgba(31,163,122,.45);}
  .hero-facts li{display:flex;flex-direction:column;gap:2px;}
  .hero-facts strong{font-size:22px;font-weight:900;letter-spacing:-.02em;font-variant-numeric:tabular-nums;}
  .hero-facts span{font-size:13.5px;color:var(--muted);}
  .hero-media{position:relative;aspect-ratio:4/3;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:#EDEDE6;box-shadow:var(--sh-2);}
  .hero-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
  .hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,22,19,0) 45%,rgba(14,22,19,.42));}
  .hero-media figcaption{
    position:absolute;left:20px;right:20px;bottom:18px;z-index:2;color:#fff;font-size:13.5px;
    display:flex;align-items:center;gap:8px;
  }
  .hero-media figcaption::before{content:"";width:26px;height:1px;background:var(--lime);}

  /* ---------- 锚点条 ---------- */
  .anchorbar{position:sticky;top:92px;z-index:45;padding:16px 12px 0;}
  .anchor-inner{
    display:flex;gap:6px;justify-content:center;
    background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
    border:1px solid var(--line);border-radius:var(--r-pill);
    padding:7px;box-shadow:var(--sh-1);
    width:max-content;max-width:100%;margin:0 auto;overflow-x:auto;
    scrollbar-width:none;
  }
  .anchor-inner::-webkit-scrollbar{display:none;}
  .anchor-inner a{padding:9px 18px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap;transition:.25s var(--ease);}
  .anchor-inner a:hover,.anchor-inner a.is-on{background:var(--lime);color:var(--ink);}

  /* ---------- 卖点区 ---------- */
  .point-grid{display:grid;grid-template-columns:minmax(0,330px) minmax(0,1fr);gap:64px;}
  .point-aside{position:sticky;top:170px;align-self:start;}
  .point-aside h2{font-size:clamp(1.6rem,3vw,2.5rem);margin:14px 0 18px;}
  .point-aside p{color:var(--muted);font-size:15.5px;}
  .point-list{display:flex;flex-direction:column;}
  .point-item{padding:26px 0;border-bottom:2px dashed rgba(31,163,122,.30);}
  .point-item:first-child{padding-top:0;}
  .point-item:last-child{border-bottom:0;}
  .point-top{display:flex;align-items:baseline;gap:16px;}
  .point-no{font-size:22px;font-weight:900;color:var(--teal);letter-spacing:-.02em;flex:none;}
  .point-item h3{font-size:1.3rem;margin-bottom:10px;}
  .point-item p{margin:0;color:var(--muted);font-size:15.5px;}

  /* ---------- 演示区 ---------- */
  .demo-wrap{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
  .demo-media{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:#EDEDE6;}
  .demo-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
  .demo-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .demo-step{background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);}
  .demo-step:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--sh-2);}
  .dot-no{
    width:36px;height:36px;border-radius:50%;background:var(--ink);color:var(--lime);
    display:grid;place-items:center;font-weight:900;font-size:15px;margin-bottom:14px;
    font-variant-numeric:tabular-nums;
  }
  .demo-step h3{font-size:1.1rem;margin-bottom:8px;}
  .demo-step p{margin:0;font-size:14.5px;color:var(--muted);}

  /* ---------- 证据区 ---------- */
  .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-bottom:44px;}
  .stat{background:var(--ink-soft);border:1px solid var(--dline);border-radius:var(--r-lg);padding:26px 22px;}
  .stat b{display:block;font-size:38px;font-weight:900;color:var(--lime);letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1;}
  .stat span{display:block;margin-top:10px;font-size:14px;color:var(--dmuted);}
  .quote-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;}
  .quote{border-radius:var(--r-lg);padding:30px;border:1px solid var(--line);background:var(--card);}
  .quote.dark{background:var(--ink-soft);border-color:var(--dline);color:var(--dtext);}
  .quote p{font-size:16px;margin-bottom:20px;}
  .quote.dark p{color:var(--dtext);}
  .quote footer{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--muted);}
  .quote.dark footer{color:var(--dmuted);}
  .avatar{width:38px;height:38px;border-radius:50%;background:var(--lime);color:var(--ink);display:grid;place-items:center;font-weight:900;font-size:14px;flex:none;}
  .trust-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .trust-strip span{
    display:inline-flex;align-items:center;padding:10px 18px;border-radius:var(--r-pill);
    border:1px solid var(--line);background:var(--card);font-size:13.5px;color:var(--muted);
    filter:grayscale(60%);transition:.3s var(--ease);
  }
  .trust-strip span:hover{filter:grayscale(0);color:var(--text);border-color:var(--lime);}

  /* ---------- 资讯区 ---------- */
  .news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:36px;}
  .news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .news-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
    transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
    height:100%;
  }
  .news-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--sh-2);}
  .news-card:hover .news-title{color:var(--teal);}
  .news-thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#EDEDE6;border-bottom:1px solid var(--line);}
  .news-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
  .news-body{padding:22px;display:flex;flex-direction:column;gap:12px;}
  .news-title{font-size:1.05rem;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .25s var(--ease);}
  .news-desc{margin:0;font-size:14.5px;line-height:1.75;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
  .empty-state{
    min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
    border:1px dashed var(--line);border-radius:var(--r-lg);background:var(--card);text-align:center;padding:32px;
  }
  .empty-state svg{width:34px;height:34px;color:var(--teal);}
  .empty-state p{margin:0;color:var(--muted);font-size:15px;}

  /* ---------- 价格区 ---------- */
  .price-grid{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start;}
  .price-intro h2{font-size:clamp(1.6rem,3vw,2.5rem);margin:14px 0 18px;}
  .price-intro p{color:var(--dmuted);}
  .price-cards{display:grid;grid-template-columns:1fr 1.15fr;gap:24px;align-items:start;}
  .price-card{border-radius:var(--r-lg);padding:30px;border:1px solid var(--line);background:var(--card);color:var(--text);}
  .price-card.reco{background:var(--ink-soft);border:2px solid var(--lime);color:var(--dtext);transform:translateY(-14px);}
  .price-card h3{font-size:1.15rem;margin-bottom:6px;}
  .price-card .price{font-size:42px;font-weight:900;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1;margin:12px 0 4px;}
  .price-card .price small{font-size:14px;font-weight:600;letter-spacing:0;margin-left:6px;opacity:.75;}
  .price-card .hint{font-size:13.5px;margin-bottom:18px;}
  .price-card ul{display:flex;flex-direction:column;gap:10px;margin-bottom:24px;}
  .price-card li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start;}
  .price-card li i{
    flex:none;width:18px;height:18px;border-radius:50%;background:var(--lime);color:var(--ink);
    display:grid;place-items:center;font-size:11px;font-weight:900;font-style:normal;margin-top:5px;
  }

  /* ---------- FAQ ---------- */
  .faq-list{max-width:860px;display:flex;flex-direction:column;gap:12px;}
  .faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;transition:border-color .25s var(--ease),background .25s var(--ease);}
  .faq-item[open]{border-color:var(--lime);background:#FBFCF7;}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:20px 22px;font-size:16.5px;font-weight:700;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";flex:none;width:16px;height:16px;position:relative;
    background:
      linear-gradient(var(--teal),var(--teal)) center/16px 2px no-repeat,
      linear-gradient(var(--teal),var(--teal)) center/2px 16px no-repeat;
    transition:transform .3s var(--ease);
  }
  .faq-item[open] summary::after{transform:rotate(45deg);}
  .faq-answer{padding:0 22px 22px;color:var(--muted);font-size:15.5px;line-height:1.85;}
  .faq-answer p{margin:0;}

  /* ---------- 底部 CTA ---------- */
  .cta-band{position:relative;background:var(--ink);color:var(--dtext);padding:88px 0;overflow:hidden;}
  .cta-band::before{
    content:"";position:absolute;left:0;right:0;top:50%;height:2px;
    background-image:linear-gradient(90deg,var(--lime) 0 14px,transparent 14px 28px);
    background-size:28px 2px;opacity:.55;
  }
  .cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
  .cta-inner h2{font-size:clamp(1.6rem,3vw,2.5rem);margin-bottom:12px;}
  .cta-inner p{margin:0;color:var(--dmuted);max-width:560px;}

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed;right:24px;bottom:24px;z-index:70;
    display:inline-flex;align-items:center;gap:8px;min-height:52px;padding:0 24px;
    border-radius:var(--r-pill);background:var(--lime);color:var(--ink);font-weight:800;font-size:15px;
    box-shadow:0 12px 32px rgba(14,22,19,.18);
    opacity:0;visibility:hidden;transform:translateY(12px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
  }
  .float-cta.is-show{opacity:1;visibility:visible;transform:none;}
  .float-cta:hover{transform:translateY(-2px);}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:var(--dmuted);padding:76px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
  .footer-brand{color:var(--dtext);font-weight:900;font-size:16.5px;display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-ico{background:var(--lime);color:var(--ink);}
  .site-footer p{font-size:14.5px;line-height:1.85;margin:0;max-width:320px;}
  .footer-col h4{font-size:14px;letter-spacing:.04em;color:var(--dtext);margin-bottom:18px;}
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a{font-size:14.5px;transition:color .25s var(--ease);}
  .footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;}
  .footer-legal{
    border-top:1px solid var(--dline);padding:22px 0 30px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:var(--dmuted);
  }

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .nav-mini .mini-card span.lbl{display:none;}
    .nav-mini .mini-card{padding:9px 11px;}
  }
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-media{order:-1;}
    .point-grid{grid-template-columns:1fr;gap:32px;}
    .point-aside{position:static;}
    .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .stats{grid-template-columns:repeat(2,minmax(0,1fr));}
    .quote-grid{grid-template-columns:1fr;}
    .price-grid{grid-template-columns:1fr;gap:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:900px){
    .nav-mini{display:none;}
    .hamburger{display:inline-flex;}
    .nav-right .btn{display:none;}
    .anchorbar{top:84px;}
    .section{padding:64px 0;}
  }
  @media (max-width:768px){
    body{font-size:16px;}
    .demo-steps{grid-template-columns:1fr;}
    .price-cards{grid-template-columns:1fr;}
    .price-card.reco{transform:none;order:-1;}
    .cta-band{padding:64px 0;}
    .cta-inner{flex-direction:column;align-items:flex-start;}
    .hero-facts{gap:20px;}
    .float-cta{
      left:12px;right:12px;bottom:0;border-radius:0;justify-content:center;
      padding:0 20px;min-height:60px;padding-bottom:env(safe-area-inset-bottom);
    }
  }
  @media (max-width:520px){
    .container{padding:0 18px;}
    .news-grid{grid-template-columns:1fr;}
    .stats{grid-template-columns:1fr 1fr;gap:14px;}
    .stat b{font-size:30px;}
    .footer-grid{grid-template-columns:1fr;}
    .anchor-inner a{padding:8px 14px;font-size:13.5px;}
    .hero-actions .btn{width:100%;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;transition:none;}
    *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  }

/* roulang page: article */
:root{
  --ink:#0E1613;
  --ink-soft:#16211D;
  --paper:#F6F6F1;
  --white:#FFFFFF;
  --lime:#C6F24E;
  --teal:#1FA37A;
  --orange:#FF7A45;
  --txt:#14201C;
  --muted:#5C6A64;
  --line:#E2E5DC;
  --d-txt:#EDF1EC;
  --d-muted:#9AA8A1;
  --d-line:rgba(255,255,255,0.08);
  --r-sm:12px;
  --r-md:16px;
  --r-lg:20px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(14,22,19,.04);
  --sh-2:0 12px 32px rgba(14,22,19,.08);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans","Helvetica Neue",Arial,sans-serif;
  background:var(--paper);color:var(--txt);
  font-size:17px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.28}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}
.num,.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

/* ---------- 顶部卡片化导航 ---------- */
.site-head{position:sticky;top:12px;z-index:60;padding:0 12px}
.nav-shell{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:10px 14px;
  transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),transform .3s var(--ease);
}
.site-head.is-scrolled .nav-shell{
  background:var(--ink-soft);border-color:var(--d-line);box-shadow:var(--sh-2);
}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:900;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.site-head.is-scrolled .brand{color:var(--d-txt)}
.brand .logo-mark{position:relative;color:inherit}
.brand .logo-mark::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;border-radius:2px;background:var(--lime)}
.brand-dot{width:10px;height:10px;border-radius:3px;background:var(--lime);flex:0 0 auto}
.nav-mini{display:flex;align-items:center;gap:8px;margin-left:auto}
.mini-card{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--white);font-size:13.5px;color:var(--txt);
  transition:transform .24s var(--ease),border-color .24s var(--ease),background-color .24s var(--ease);
}
.mini-card svg{width:20px;height:20px;color:var(--teal);flex:0 0 auto}
.mini-card:hover{transform:translateY(-4px);border-color:var(--lime)}
.mini-card.is-active{border-color:var(--lime);background:rgba(198,242,78,.2)}
.site-head.is-scrolled .mini-card{background:rgba(255,255,255,.06);border-color:var(--d-line);color:var(--d-txt)}
.site-head.is-scrolled .mini-card svg{color:var(--lime)}
.site-head.is-scrolled .mini-card:hover{border-color:var(--lime)}
.site-head.is-scrolled .mini-card.is-active{background:rgba(198,242,78,.18);border-color:var(--lime);color:#0E1613}
.head-cta{display:inline-flex;align-items:center;gap:8px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;align-items:center;justify-content:center;background:var(--white)}
.site-head.is-scrolled .nav-toggle{border-color:var(--d-line);background:rgba(255,255,255,.06)}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--pill);
  font-size:15.5px;font-weight:700;letter-spacing:.01em;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-primary{background:var(--lime);color:#0E1613;box-shadow:var(--sh-1)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);background:#D3F76B}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:transparent}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(14,22,19,.06);border-color:var(--ink)}
.btn-outline-light{border-color:rgba(255,255,255,.24);color:var(--d-txt);background:transparent}
.btn-outline-light:hover{transform:translateY(-2px);border-color:var(--lime);background:rgba(198,242,78,.12)}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--teal);font-size:15.5px}
.btn-text .arw{transition:transform .24s var(--ease)}
.btn-text:hover .arw{transform:translateX(4px)}
.btn-text:hover{color:#0E1613;background:rgba(198,242,78,.28);border-radius:8px}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--pill);font-size:12.5px;font-weight:700;letter-spacing:.02em}
.badge-lime{background:rgba(198,242,78,.28);color:#2C4712}
.badge-teal{background:rgba(31,163,122,.14);color:#136E52}
.badge-orange{background:rgba(255,122,69,.16);color:#B4431A}
.badge-dark{background:rgba(255,255,255,.1);color:var(--d-txt)}

/* ---------- 页面头部（文章） ---------- */
.page-head{padding:56px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px}
.crumb a:hover{color:var(--teal)}
.crumb .sep{color:#B9C0B6}
.crumb .now{color:var(--txt);font-weight:600;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.head-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:16px}
.head-kicker::before{content:"";width:28px;height:2px;background:var(--lime);border-radius:2px}
h1.post-title{font-size:clamp(1.85rem,4.2vw,3.1rem);font-weight:900;letter-spacing:-.02em;line-height:1.24;max-width:900px}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:22px;font-size:14px;color:var(--muted)}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C4CBC1}

/* ---------- 速览卡 ---------- */
.glance{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:38px}
.glance-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--sh-1);transition:transform .24s var(--ease),border-color .24s var(--ease)}
.glance-card:hover{transform:translateY(-4px);border-color:var(--lime)}
.glance-card .g-num{font-size:26px;font-weight:900;letter-spacing:-.02em;color:var(--ink)}
.glance-card .g-label{font-size:13px;color:var(--muted);margin-top:4px}

/* ---------- 正文 ---------- */
.read-wrap{padding:64px 0 0}
.read-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:40px 44px}
.article-body{max-width:742px;margin:0 auto;font-size:17px;line-height:1.9;color:#1B2723;word-break:break-word}
.article-body h2{font-size:clamp(1.3rem,2.4vw,1.75rem);font-weight:900;letter-spacing:-.02em;line-height:1.45;margin:48px 0 16px;padding-left:14px;border-left:3px solid var(--lime)}
.article-body h3{font-size:1.2rem;font-weight:800;margin:32px 0 12px}
.article-body h4{font-size:1.05rem;font-weight:800;margin:24px 0 10px}
.article-body p{margin:0 0 20px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0}
.article-body blockquote{margin:28px 0;padding:18px 22px;background:var(--paper);border-left:3px solid var(--teal);border-radius:0 12px 12px 0;color:#33413B}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:28px 0;font-size:15.5px}
.article-body th{background:var(--ink);color:var(--d-txt);text-align:left;padding:12px 14px;font-weight:700}
.article-body td{border:1px solid var(--line);padding:12px 14px}
.article-body img{border-radius:var(--r-lg);margin:28px 0;border:1px solid var(--line)}
.article-body figure{margin:28px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:10px}
.article-body code{background:var(--ink);color:var(--d-txt);padding:2px 7px;border-radius:6px;font-size:.9em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-body pre{background:var(--ink);color:var(--d-txt);padding:18px 20px;border-radius:14px;overflow-x:auto;margin:26px 0}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body a{color:var(--teal);border-bottom:1px solid rgba(31,163,122,.35)}
.article-body a:hover{color:#0E1613;border-bottom-color:var(--lime);background:rgba(198,242,78,.3)}
.article-body hr{border:0;border-top:1px dashed #CFD6CC;margin:40px 0}
.article-body strong{font-weight:800;color:var(--ink)}
.empty-state{max-width:640px;margin:0 auto;text-align:center;padding:40px 20px}
.empty-state .es-icon{width:56px;height:56px;margin:0 auto 18px;border-radius:16px;border:1px dashed #C7CEC4;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.empty-state h2{font-size:1.35rem;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:22px}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:clamp(1.4rem,2.6vw,2rem)}
.sec-head p{color:var(--muted);font-size:15px;margin-top:8px}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.rel-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.rel-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--sh-2)}
.rel-thumb{position:relative;aspect-ratio:4/3;background:var(--paper);overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:20px 22px 22px}
.rel-body h3{font-size:1.05rem;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover h3{color:var(--teal)}
.rel-body p{font-size:14.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:44px;padding-top:32px;border-top:1px dashed #CFD6CC}

/* ---------- FAQ ---------- */
.faq-wrap{padding:96px 0 0}
.faq-list{display:grid;gap:12px;max-width:880px}
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:border-color .24s var(--ease),background-color .24s var(--ease)}
.faq-item[open]{border-color:var(--lime);background:var(--paper)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:16.5px;font-weight:700;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-item summary .plus::before,.faq-item summary .plus::after{content:"";position:absolute;background:var(--lime);border-radius:2px;transition:transform .3s var(--ease)}
.faq-item summary .plus::before{left:9px;top:1px;width:2px;height:18px}
.faq-item summary .plus::after{top:9px;left:1px;height:2px;width:18px}
.faq-item[open] summary .plus::before{transform:rotate(45deg)}
.faq-item[open] summary .plus::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 22px;color:#33413B;font-size:16px;line-height:1.85}

/* ---------- 底部 CTA ---------- */
.cta-band{margin-top:96px;background:var(--ink);color:var(--d-txt);position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:repeating-linear-gradient(90deg,var(--lime) 0 10px,transparent 10px 22px);opacity:.8}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;padding:64px 0}
.cta-inner h2{font-size:clamp(1.5rem,3vw,2.25rem);color:#fff;max-width:620px}
.cta-inner p{color:var(--d-muted);margin-top:12px;max-width:600px;font-size:16px}
.cta-side{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink);color:var(--d-txt);margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:72px 0 48px}
.foot-brand .brand{color:#fff;font-size:18px;white-space:normal}
.foot-brand p{color:var(--d-muted);font-size:14.5px;line-height:1.85;margin-top:16px;max-width:340px}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.foot-col h4{font-size:14px;letter-spacing:.08em;color:#fff;margin-bottom:16px;font-weight:800}
.foot-col li{margin-bottom:10px}
.foot-col a{color:var(--d-muted);font-size:14.5px}
.foot-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
.foot-legal{border-top:1px solid var(--d-line);padding:22px 0 34px;display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;font-size:13.5px;color:var(--d-muted)}
.foot-legal .lime{color:var(--lime)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 24px;border-radius:var(--pill);
  background:var(--lime);color:#0E1613;font-weight:800;font-size:15px;
  box-shadow:var(--sh-2);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.float-cta.is-show{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{transform:translateY(-2px)}

/* ---------- 移动端面板 ---------- */
.mobile-panel{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  padding:20px;overflow-y:auto;
}
.mobile-panel[hidden]{display:none}
.mp-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:8px 4px 22px;border-bottom:1px solid var(--line)}
.mp-head .brand{font-size:16px}
.mp-close{width:44px;height:44px;border:1px solid var(--line);border-radius:12px;font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;background:var(--white)}
.mp-list{display:grid;gap:12px;margin:22px 0}
.mp-list .mini-card{justify-content:flex-start;padding:16px;font-size:15px;border-radius:var(--r-md)}
.mp-list .mini-card svg{width:22px;height:22px}
.mp-cta{display:grid;gap:12px;margin-top:8px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s 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:1024px){
  .nav-mini{display:none}
  .nav-toggle{display:inline-flex}
  .head-cta .btn{height:44px;padding:0 18px;font-size:14.5px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .glance{grid-template-columns:repeat(3,1fr)}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .read-card{padding:32px 28px}
}
@media (max-width:768px){
  body{font-size:16.5px}
  .section{padding:72px 0}
  .container{padding:0 20px}
  .brand{font-size:14.5px;gap:8px}
  .head-cta{display:none}
  .page-head{padding:36px 0 0}
  .glance{grid-template-columns:1fr;gap:12px}
  .read-wrap{padding:44px 0 0}
  .read-card{padding:24px 20px;border-radius:var(--r-md)}
  .article-body{font-size:16.5px}
  .rel-grid{grid-template-columns:1fr}
  .cta-inner{padding:52px 0;flex-direction:column;align-items:flex-start}
  .faq-wrap{padding:72px 0 0}
  .related{padding:56px 0 0}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding:56px 0 32px}
  .float-cta{right:12px;left:12px;bottom:12px;height:56px;justify-content:center;border-radius:16px}
}
@media (max-width:520px){
  h1.post-title{font-size:1.6rem}
  .sec-head{flex-direction:column;align-items:flex-start}
  .btn{width:100%;padding:0 18px}
  .back-row{flex-direction:column}
  .back-row .btn{width:100%}
}

/* roulang page: category1 */
:root{
    --ink:#0E1613;
    --ink-soft:#16211D;
    --paper:#F6F6F1;
    --card:#FFFFFF;
    --lime:#C6F24E;
    --teal:#1FA37A;
    --orange:#FF7A45;
    --t-main:#14201C;
    --t-muted:#5C6A64;
    --border:#E2E5DC;
    --d-text:#EDF1EC;
    --d-muted:#9AA8A1;
    --d-border:rgba(255,255,255,.08);
    --r-s:12px;
    --r-l:20px;
    --r-p:999px;
    --sh-1:0 1px 2px rgba(14,22,19,.04);
    --sh-2:0 12px 32px rgba(14,22,19,.08);
    --ease:cubic-bezier(.22,.61,.36,1);
    --num:"Inter","SF Mono",ui-monospace,monospace;
  }

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

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

  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
    background:var(--paper);
    color:var(--t-main);
    font-size:16.5px;
    line-height:1.85;
    letter-spacing:.005em;
    -webkit-font-smoothing:antialiased;
  }

  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  svg{display:block}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  h1,h2,h3{font-weight:900;letter-spacing:-.02em;line-height:1.28}
  h1{font-size:clamp(2rem,5vw,4.25rem)}
  h2{font-size:clamp(1.6rem,3vw,2.5rem)}
  h3{font-size:clamp(1.125rem,1.6vw,1.35rem);line-height:1.5}

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:700;
    letter-spacing:.08em;
    color:var(--teal);
    text-transform:uppercase;
  }
  .eyebrow::before{
    content:"";
    width:22px;height:2px;
    background:var(--lime);
    border-radius:2px;
  }

  .lead{color:var(--t-muted);font-size:1.02rem}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:50px;
    padding:0 26px;
    border-radius:var(--r-p);
    font-size:15.5px;
    font-weight:700;
    letter-spacing:.01em;
    border:1px solid transparent;
    transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
    white-space:nowrap;
  }
  .btn:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
  .btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--sh-1)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{border-color:var(--border);background:transparent;color:var(--t-main)}
  .btn-ghost:hover{background:rgba(14,22,19,.06);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-dark{background:var(--ink);color:var(--d-text)}
  .btn-dark:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}

  .arrow-link{
    display:inline-flex;align-items:center;gap:6px;
    font-weight:700;font-size:15px;color:var(--teal);
  }
  .arrow-link svg{width:16px;height:16px;transition:transform .22s var(--ease)}
  .arrow-link:hover svg{transform:translateX(3px)}
  .arrow-link:hover{color:var(--ink)}

  .badge{
    display:inline-flex;align-items:center;
    padding:4px 12px;border-radius:var(--r-p);
    font-size:12.5px;font-weight:700;letter-spacing:.02em;
  }
  .badge-lime{background:rgba(198,242,78,.28);color:#4A6410}
  .badge-teal{background:rgba(31,163,122,.14);color:#12735A}
  .badge-orange{background:rgba(255,122,69,.16);color:#B64517}

  /* ============ 顶部导航 ============ */
  .site-head{
    position:sticky;
    top:12px;
    z-index:80;
    padding:0 12px;
  }
  .nav-shell{
    max-width:1200px;
    margin:0 auto;
    display:flex;
    align-items:center;
    gap:16px;
    padding:10px 14px;
    background:var(--card);
    border:1px solid var(--border);
    border-radius:18px;
    box-shadow:var(--sh-1);
    transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease),border-radius .3s var(--ease);
  }
  .site-head.is-scrolled .nav-shell{
    background:var(--ink-soft);
    border-color:var(--d-border);
    color:var(--d-text);
    border-radius:12px;
    box-shadow:var(--sh-2);
  }

  .brand{
    display:flex;align-items:center;gap:10px;
    font-weight:900;letter-spacing:-.02em;font-size:16.5px;
    white-space:nowrap;flex-shrink:0;
  }
  .brand .mark{
    width:34px;height:34px;flex-shrink:0;
    border-radius:10px;
    background:var(--ink);
    color:var(--lime);
    display:grid;place-items:center;
    font-size:14px;font-weight:900;
    transition:background .3s var(--ease),color .3s var(--ease);
  }
  .site-head.is-scrolled .brand .mark{background:var(--lime);color:var(--ink)}
  .brand .u{
    border-bottom:3px solid var(--lime);
    padding-bottom:1px;
  }

  .nav-mini{
    display:flex;
    align-items:center;
    gap:8px;
    margin-left:auto;
  }
  .mini-card{
    display:flex;align-items:center;gap:8px;
    padding:8px 13px;
    border:1px solid var(--border);
    border-radius:12px;
    background:var(--card);
    font-size:13.5px;
    font-weight:600;
    color:var(--t-main);
    transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  }
  .mini-card svg{width:18px;height:18px;color:var(--teal)}
  .mini-card:hover{transform:translateY(-4px);border-color:var(--lime)}
  .mini-card:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
  .mini-card.is-active{background:var(--lime);border-color:var(--lime);color:var(--ink);font-weight:800}
  .mini-card.is-active svg{color:var(--ink)}

  .site-head.is-scrolled .mini-card{
    background:rgba(255,255,255,.07);
    border-color:var(--d-border);
    color:var(--d-text);
  }
  .site-head.is-scrolled .mini-card svg{color:var(--lime)}
  .site-head.is-scrolled .mini-card:hover{border-color:var(--lime)}
  .site-head.is-scrolled .mini-card.is-active{background:var(--lime);color:var(--ink)}
  .site-head.is-scrolled .mini-card.is-active svg{color:var(--ink)}

  .head-cta{flex-shrink:0;min-height:44px;padding:0 20px;font-size:14.5px}

  .burger{
    display:none;
    width:44px;height:44px;
    border-radius:12px;
    border:1px solid var(--border);
    place-items:center;
    margin-left:auto;
  }
  .burger svg{width:20px;height:20px}
  .site-head.is-scrolled .burger{border-color:var(--d-border);color:var(--d-text)}

  .mobile-panel{
    position:fixed;
    inset:0;
    z-index:90;
    background:var(--ink);
    padding:20px;
    display:none;
    flex-direction:column;
    gap:14px;
    overflow-y:auto;
  }
  .mobile-panel.is-open{display:flex}
  .mobile-panel .mp-top{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--d-text)}
  .mobile-panel .mp-close{
    width:44px;height:44px;border-radius:12px;
    border:1px solid var(--d-border);
    display:grid;place-items:center;color:var(--d-text);
  }
  .mobile-panel .mp-card{
    display:flex;align-items:center;gap:12px;
    padding:16px 18px;
    border:1px solid var(--d-border);
    border-radius:14px;
    background:rgba(255,255,255,.05);
    color:var(--d-text);
    font-weight:700;
    font-size:15.5px;
  }
  .mobile-panel .mp-card svg{width:20px;height:20px;color:var(--lime)}
  .mobile-panel .mp-card.is-active{background:var(--lime);border-color:var(--lime);color:var(--ink)}
  .mobile-panel .mp-card.is-active svg{color:var(--ink)}
  .mobile-panel .btn{margin-top:6px}

  /* ============ 面包屑 ============ */
  .crumbs{
    padding:28px 0 0;
    font-size:13.5px;
    color:var(--t-muted);
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  }
  .crumbs a:hover{color:var(--teal);text-decoration:underline;text-underline-offset:4px}
  .crumbs .sep{color:#B9C0B5}
  .crumbs .now{color:var(--t-main);font-weight:700}

  /* ============ 分类 Hero ============ */
  .cat-hero{padding:32px 0 76px}
  .cat-hero-grid{
    display:grid;
    grid-template-columns:1.02fr .98fr;
    gap:56px;
    align-items:center;
  }
  .cat-hero h1{margin:16px 0 20px}
  .cat-hero h1 .hl{
    position:relative;
    white-space:nowrap;
  }
  .cat-hero h1 .hl::after{
    content:"";
    position:absolute;
    left:0;right:0;bottom:.08em;
    height:.14em;
    background:var(--lime);
    border-radius:3px;
    z-index:-1;
  }
  .cat-hero .lead{max-width:56ch;margin-bottom:28px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px}

  .media-frame{
    position:relative;
    border:1px solid var(--border);
    border-radius:var(--r-l);
    overflow:hidden;
    background:#EDEFE8;
    box-shadow:var(--sh-1);
  }
  .media-frame::after{
    content:"";
    position:absolute;inset:0;
    border-radius:var(--r-l);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
    pointer-events:none;
  }
  .media-4x3{aspect-ratio:4/3}
  .media-16x9{aspect-ratio:16/9}
  .media-frame img{width:100%;height:100%;object-fit:cover}

  .hero-side-note{
    margin-top:18px;
    display:flex;align-items:center;gap:10px;
    font-size:13.5px;color:var(--t-muted);
  }
  .hero-side-note .dot{width:8px;height:8px;border-radius:50%;background:var(--lime);flex-shrink:0}

  /* ============ 图文交替长条 ============ */
  .strip-section{padding:20px 0 96px}
  .strip-head{max-width:70ch;margin-bottom:56px}
  .strip-head h2{margin:14px 0 16px}

  .strip-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
    padding:36px 0;
    border-top:1px solid var(--border);
  }
  .strip-row:first-of-type{border-top:0;padding-top:0}
  .strip-row.flip .strip-media{order:2}
  .strip-row .num{
    font-family:var(--num);
    font-variant-numeric:tabular-nums;
    font-size:13px;
    font-weight:700;
    letter-spacing:.14em;
    color:var(--orange);
  }
  .strip-row h3{font-size:clamp(1.35rem,2.1vw,1.8rem);margin:10px 0 14px;font-weight:900;letter-spacing:-.02em}
  .strip-row p{color:var(--t-muted);margin-bottom:14px;max-width:56ch}
  .strip-list{margin:0 0 20px;display:grid;gap:10px}
  .strip-list li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:15.5px;color:var(--t-main);
  }
  .strip-list li .tick{
    flex-shrink:0;margin-top:7px;
    width:16px;height:16px;border-radius:50%;
    background:rgba(198,242,78,.42);
    display:grid;place-items:center;
  }
  .strip-list li .tick::after{
    content:"";width:7px;height:4px;
    border-left:2px solid #3F5A0C;border-bottom:2px solid #3F5A0C;
    transform:rotate(-45deg) translate(1px,-1px);
  }

  .dash-line{
    width:132px;height:2px;border-radius:2px;
    background-image:repeating-linear-gradient(90deg,var(--lime) 0 10px,transparent 10px 20px);
    margin-bottom:18px;
  }

  /* ============ 步骤区 ============ */
  .steps-section{padding:0 0 100px}
  .steps-shell{
    background:var(--ink);
    color:var(--d-text);
    border-radius:26px;
    padding:64px 56px;
    position:relative;
    overflow:hidden;
  }
  .steps-shell::before{
    content:"";
    position:absolute;
    left:0;right:0;top:0;height:3px;
    background-image:repeating-linear-gradient(90deg,var(--lime) 0 16px,transparent 16px 34px);
  }
  .steps-shell h2{color:var(--d-text);margin:14px 0 14px}
  .steps-shell .eyebrow{color:var(--lime)}
  .steps-shell .lead{color:var(--d-muted);max-width:62ch}
  .steps-grid{
    margin-top:44px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .step-item{
    border:1px solid var(--d-border);
    border-radius:16px;
    padding:24px 22px;
    background:rgba(255,255,255,.04);
    transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
  }
  .step-item:hover{transform:translateY(-4px);border-color:var(--lime);background:rgba(198,242,78,.07)}
  .step-item .idx{
    font-family:var(--num);
    font-variant-numeric:tabular-nums;
    font-size:26px;font-weight:800;
    color:var(--lime);
    line-height:1;
    margin-bottom:14px;
  }
  .step-item h3{color:var(--d-text);font-size:1.05rem;margin-bottom:8px}
  .step-item p{color:var(--d-muted);font-size:14.5px;line-height:1.75}

  /* ============ 提示区 ============ */
  .notes-section{padding:0 0 100px}
  .notes-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:20px;
    margin-top:40px;
  }
  .note-card{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--r-l);
    padding:28px 26px;
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .note-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--sh-2)}
  .note-card .ico{
    width:40px;height:40px;border-radius:12px;
    background:rgba(31,163,122,.12);
    color:var(--teal);
    display:grid;place-items:center;
    margin-bottom:16px;
  }
  .note-card .ico svg{width:20px;height:20px}
  .note-card h3{margin-bottom:10px;font-size:1.08rem}
  .note-card p{color:var(--t-muted);font-size:15px}

  /* ============ FAQ ============ */
  .faq-section{padding:0 0 100px}
  .faq-head{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
  .faq-head h2{margin:14px 0 16px}
  .faq-list{margin-top:0}
  .faq-item{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:16px;
    margin-bottom:12px;
    overflow:hidden;
    transition:border-color .22s var(--ease),background .22s var(--ease);
  }
  .faq-item[open]{border-color:var(--lime);background:#FBFCF5}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    position:relative;
    padding:20px 58px 20px 24px;
    font-size:16.5px;
    font-weight:700;
    color:var(--t-main);
    letter-spacing:-.01em;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:focus-visible{outline:2px solid var(--lime);outline-offset:-2px}
  .faq-item summary::after{
    content:"";
    position:absolute;
    right:22px;top:50%;
    width:16px;height:16px;
    transform:translateY(-50%);
    background:
      linear-gradient(var(--teal),var(--teal)) center/16px 2px no-repeat,
      linear-gradient(var(--teal),var(--teal)) center/2px 16px no-repeat;
    transition:transform .3s var(--ease);
  }
  .faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
  .faq-item .ans{
    padding:0 24px 22px;
    color:var(--t-muted);
    font-size:15.5px;
  }

  /* ============ 结尾 CTA ============ */
  .cta-section{padding:0 0 100px}
  .cta-card{
    position:relative;
    overflow:hidden;
    background:var(--ink);
    color:var(--d-text);
    border-radius:26px;
    padding:64px 56px;
    display:grid;
    grid-template-columns:1.35fr .65fr;
    gap:40px;
    align-items:center;
    border:1px solid var(--ink-soft);
  }
  .cta-card::before{
    content:"";
    position:absolute;
    left:0;right:0;top:0;height:3px;
    background-image:repeating-linear-gradient(90deg,var(--lime) 0 16px,transparent 16px 34px);
  }
  .cta-card h2{color:var(--d-text);margin-bottom:14px}
  .cta-card p{color:var(--d-muted);max-width:58ch}
  .cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
  .cta-actions .btn{width:100%}
  .cta-actions .btn-ghost{border-color:var(--d-border);color:var(--d-text)}
  .cta-actions .btn-ghost:hover{background:rgba(255,255,255,.08)}

  /* ============ 页脚 ============ */
  .site-foot{
    background:var(--ink);
    color:var(--d-text);
    padding:76px 0 0;
    margin-top:8px;
  }
  .foot-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:52px;
  }
  .foot-brand{
    display:flex;align-items:center;gap:10px;
    font-weight:900;font-size:16.5px;
    letter-spacing:-.02em;
    margin-bottom:16px;
  }
  .foot-brand .mark{
    width:34px;height:34px;border-radius:10px;
    background:var(--lime);color:var(--ink);
    display:grid;place-items:center;
    font-size:14px;font-weight:900;
    flex-shrink:0;
  }
  .foot-brand .u{border-bottom:3px solid var(--lime);padding-bottom:1px}
  .site-foot p{color:var(--d-muted);font-size:14.5px;max-width:38ch}
  .foot-col h4{
    font-size:14px;font-weight:800;
    letter-spacing:.08em;
    color:var(--d-text);
    margin-bottom:18px;
  }
  .foot-col ul{display:grid;gap:12px}
  .foot-col a{
    color:var(--d-muted);
    font-size:14.5px;
    transition:color .2s var(--ease);
  }
  .foot-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
  .foot-col .contact-line{color:var(--d-muted);font-size:14.5px;display:flex;gap:8px;align-items:flex-start}
  .foot-col .contact-line strong{color:var(--d-text);font-weight:700}
  .foot-bottom{
    border-top:1px solid var(--d-border);
    padding:22px 0 26px;
    display:flex;flex-wrap:wrap;gap:12px;
    align-items:center;justify-content:space-between;
    font-size:13px;color:var(--d-muted);
  }
  .foot-bottom .legal{display:flex;flex-wrap:wrap;gap:18px}
  .foot-bottom code{
    font-family:var(--num);
    color:var(--d-muted);
    letter-spacing:.02em;
  }

  /* ============ 浮动 CTA ============ */
  .float-cta{
    position:fixed;
    right:24px;bottom:24px;
    z-index:70;
    display:inline-flex;align-items:center;gap:8px;
    min-height:52px;
    padding:0 24px;
    border-radius:var(--r-p);
    background:var(--lime);
    color:var(--ink);
    font-weight:800;
    font-size:15px;
    box-shadow:0 10px 26px rgba(14,22,19,.18);
    opacity:0;visibility:hidden;
    transform:translateY(12px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
  }
  .float-cta.is-on{opacity:1;visibility:visible;transform:translateY(0)}
  .float-cta:hover{transform:translateY(-2px)}
  .float-cta:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

  /* ============ 入场动画 ============ */
  .fade-up{
    opacity:0;
    transform:translateY(12px);
    transition:opacity .6s var(--ease),transform .6s var(--ease);
  }
  .fade-up.is-in{opacity:1;transform:none}

  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .fade-up{opacity:1;transform:none;transition:none}
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  }

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .nav-mini{display:none}
    .head-cta{display:none}
    .burger{display:grid}
    .cat-hero-grid{grid-template-columns:1fr;gap:36px}
    .cat-hero{padding-bottom:56px}
    .strip-row{gap:36px}
    .steps-grid{grid-template-columns:repeat(2,1fr)}
    .steps-shell{padding:48px 32px}
    .faq-head{grid-template-columns:1fr;gap:24px}
    .cta-card{grid-template-columns:1fr;padding:48px 32px}
    .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  }

  @media (max-width:768px){
    body{font-size:16px;line-height:1.8}
    .cat-hero{padding-top:20px}
    .strip-section{padding-bottom:64px}
    .strip-row{
      grid-template-columns:1fr;
      gap:24px;
      padding:28px 0;
    }
    .strip-row.flip .strip-media{order:0}
    .steps-grid{grid-template-columns:1fr}
    .notes-grid{grid-template-columns:1fr}
    .steps-section,.notes-section,.faq-section,.cta-section{padding-bottom:64px}
    .steps-shell{padding:40px 22px;border-radius:20px}
    .cta-card{padding:40px 22px;border-radius:20px}
    .site-foot{padding-top:56px}
  }

  @media (max-width:520px){
    .container{padding-left:16px;padding-right:16px}
    .site-head{padding:0 8px;top:8px}
    .nav-shell{padding:8px 10px;border-radius:16px}
    .brand{font-size:15px}
    .brand .mark{width:30px;height:30px;font-size:12.5px}
    .hero-actions{flex-direction:column;align-items:stretch}
    .hero-actions .btn{width:100%}
    .foot-grid{grid-template-columns:1fr;gap:28px}
    .foot-bottom{flex-direction:column;align-items:flex-start}
    .float-cta{
      right:0;left:0;bottom:0;
      border-radius:0;
      justify-content:center;
      min-height:60px;
      padding:0 20px calc(env(safe-area-inset-bottom,0px));
      box-shadow:0 -6px 20px rgba(14,22,19,.14);
    }
  }

/* roulang page: category2 */
:root{
  --ink:#0E1613;
  --ink-soft:#16211D;
  --paper:#F6F6F1;
  --white:#FFFFFF;
  --lime:#C6F24E;
  --teal:#1FA37A;
  --orange:#FF7A45;
  --txt:#14201C;
  --txt-soft:#5C6A64;
  --line:#E2E5DC;
  --line-dark:rgba(255,255,255,.08);
  --dark-txt:#EDF1EC;
  --dark-soft:#9AA8A1;
  --r-sm:12px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,22,19,.04);
  --sh-2:0 12px 32px rgba(14,22,19,.08);
  --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(--paper);
  color:var(--txt);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",Inter,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease),border-color .25s var(--ease),background-color .25s var(--ease);}
button,input{font:inherit;color:inherit;}
button{border:0;background:none;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:900;letter-spacing:-.02em;line-height:1.25;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:72px 0;}
@media(min-width:1024px){.section{padding:104px 0;}}

/* ---------- 顶部导航 ---------- */
.nav-wrap{position:sticky;top:12px;z-index:60;padding:0 12px;}
.site-nav{
  max-width:1200px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:16px;
  padding:10px 14px;
  box-shadow:var(--sh-1);
  transition:background-color .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease);
}
.site-nav.is-scrolled{
  background:var(--ink-soft);
  border-color:var(--line-dark);
  box-shadow:var(--sh-2);
  color:var(--dark-txt);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-weight:900;font-size:16px;flex:0 0 auto;
}
.brand-text{font-weight:900;font-size:15.5px;letter-spacing:-.02em;white-space:nowrap;}
.brand-text .u-reg{position:relative;color:inherit;}
.brand-text .u-reg::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;
  background:var(--lime);border-radius:3px;
}
.site-nav.is-scrolled .brand-text{color:var(--dark-txt);}
.nav-mini{display:flex;align-items:center;gap:8px;margin-left:auto;}
.mini-card{
  display:flex;align-items:center;gap:7px;
  padding:8px 13px;border-radius:12px;
  border:1px solid var(--line);
  background:var(--paper);
  font-size:13.5px;font-weight:600;color:var(--txt-soft);
  transition:transform .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease),background-color .25s var(--ease);
}
.mini-card svg{width:18px;height:18px;color:var(--teal);flex:0 0 auto;}
.mini-card:hover{transform:translateY(-3px);border-color:var(--lime);color:var(--ink);}
.mini-card.is-active{background:var(--lime);border-color:var(--lime);color:var(--ink);}
.mini-card.is-active svg{color:var(--ink);}
.site-nav.is-scrolled .mini-card{background:rgba(255,255,255,.07);border-color:var(--line-dark);color:var(--dark-soft);}
.site-nav.is-scrolled .mini-card svg{color:var(--lime);}
.site-nav.is-scrolled .mini-card:hover{border-color:var(--lime);color:var(--dark-txt);}
.site-nav.is-scrolled .mini-card.is-active{background:var(--lime);border-color:var(--lime);color:var(--ink);}
.site-nav.is-scrolled .mini-card.is-active svg{color:var(--ink);}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--lime);color:var(--ink);
  font-weight:800;font-size:14px;
  padding:11px 20px;border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
  white-space:nowrap;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.nav-cta:active{transform:translateY(0);}
.nav-burger{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--paper);
  place-items:center;
}
.nav-burger svg{width:20px;height:20px;color:var(--ink);}
.mobile-panel{
  position:fixed;inset:0;z-index:80;
  background:var(--ink-soft);
  padding:20px;
  display:none;
  flex-direction:column;gap:18px;
  overflow-y:auto;
}
.mobile-panel.is-open{display:flex;}
.mobile-head{display:flex;align-items:center;justify-content:space-between;gap:14px;color:var(--dark-txt);}
.mobile-close{
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-dark);background:rgba(255,255,255,.06);
  display:grid;place-items:center;color:var(--dark-txt);
}
.mobile-close svg{width:20px;height:20px;}
.mobile-panel .mini-card{background:rgba(255,255,255,.07);border-color:var(--line-dark);color:var(--dark-txt);padding:16px;font-size:15px;}
.mobile-panel .mini-card svg{color:var(--lime);}
.mobile-panel .mini-card.is-active{background:var(--lime);color:var(--ink);}
.mobile-panel .mini-card.is-active svg{color:var(--ink);}
@media(max-width:900px){
  .nav-mini,.nav-cta{display:none;}
  .nav-burger{display:grid;}
}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0;font-size:13.5px;color:var(--txt-soft);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:var(--line);}
.crumbs a:hover{color:var(--teal);}
.crumbs .now{color:var(--ink);font-weight:700;}

/* ---------- 分类 Hero ---------- */
.cat-hero{padding:36px 0 56px;}
.cat-hero-grid{display:grid;gap:32px;align-items:center;}
@media(min-width:1024px){
  .cat-hero-grid{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:56px;}
}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(31,163,122,.12);color:var(--teal);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  padding:7px 14px;border-radius:var(--r-pill);
}
.badge.orange{background:rgba(255,122,69,.14);color:var(--orange);}
.cat-hero h1{
  font-size:clamp(2rem,4.6vw,3.5rem);
  margin:20px 0 18px;
}
.cat-hero h1 .hl{position:relative;white-space:nowrap;}
.cat-hero h1 .hl::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:rgba(198,242,78,.55);border-radius:4px;z-index:-1;
}
.lede{font-size:17px;color:var(--txt-soft);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 28px;border-radius:var(--r-pill);
  font-weight:800;font-size:15px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:var(--sh-1);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border:1px solid var(--line);background:transparent;color:var(--ink);}
.btn-ghost:hover{background:rgba(14,22,19,.06);border-color:var(--ink);}
.btn-dark{background:var(--ink);color:var(--dark-txt);}
.btn-dark:hover{transform:translateY(-2px);box-shadow:var(--sh-2);background:var(--ink-soft);}
.btn .arrow{transition:transform .25s var(--ease);}
.btn:hover .arrow{transform:translateX(3px);}
.hero-figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--white);
  box-shadow:var(--sh-2);
  aspect-ratio:4/3;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-chip{
  position:absolute;left:16px;bottom:16px;
  background:rgba(14,22,19,.86);color:var(--dark-txt);
  border-radius:14px;padding:12px 16px;
  font-size:13px;line-height:1.6;max-width:78%;
  border:1px solid rgba(255,255,255,.1);
}
.hero-chip strong{color:var(--lime);font-weight:800;}

/* ---------- 横向标签条 ---------- */
.tagbar{
  position:sticky;top:78px;z-index:40;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-1);
  padding:8px;
  margin-bottom:44px;
}
.tagbar-inner{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;}
.tagbar-inner::-webkit-scrollbar{display:none;}
.tag-pill{
  flex:0 0 auto;
  padding:9px 18px;border-radius:var(--r-pill);
  font-size:13.5px;font-weight:700;color:var(--txt-soft);
  border:1px solid transparent;
  transition:background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.tag-pill:hover{background:var(--paper);color:var(--ink);border-color:var(--line);}
.tag-pill.on{background:var(--ink);color:var(--lime);}

/* ---------- 大卡栅格 ---------- */
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.4rem);margin-bottom:14px;}
.sec-head p{color:var(--txt-soft);font-size:16.5px;}
.grid-cards{display:grid;gap:24px;}
@media(min-width:768px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr));}}
.big-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.big-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--sh-2);}
.big-card .num{
  font-family:Inter,ui-monospace,monospace;
  font-variant-numeric:tabular-nums;
  font-size:13px;font-weight:700;color:var(--teal);letter-spacing:.08em;
}
.big-card h3{font-size:1.25rem;}
.big-card p{color:var(--txt-soft);font-size:15.5px;line-height:1.8;margin:0;}
.big-card ul{display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.big-card ul li{
  position:relative;padding-left:22px;font-size:14.5px;color:var(--txt);
}
.big-card ul li::before{
  content:"";position:absolute;left:0;top:9px;
  width:10px;height:10px;border-radius:3px;background:var(--lime);
}
.big-card.wide{grid-column:span 1;}
@media(min-width:768px){.big-card.wide{grid-column:span 2;}}
.big-card.dark{background:var(--ink);border-color:var(--ink);color:var(--dark-txt);}
.big-card.dark h3{color:var(--dark-txt);}
.big-card.dark p{color:var(--dark-soft);}
.big-card.dark .num{color:var(--lime);}
.big-card.dark ul li{color:var(--dark-txt);}
.card-thumb{
  border-radius:14px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:var(--paper);
}
.card-thumb img{width:100%;height:100%;object-fit:cover;}

/* ---------- 图文交替 ---------- */
.split{display:grid;gap:32px;align-items:center;}
@media(min-width:1024px){
  .split{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:64px;}
  .split.rev .split-media{order:2;}
}
.split-media{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:var(--white);
  aspect-ratio:4/3;box-shadow:var(--sh-1);
}
.split-media img{width:100%;height:100%;object-fit:cover;}
.split h2{font-size:clamp(1.55rem,2.6vw,2.1rem);margin-bottom:16px;}
.split p{color:var(--txt-soft);}
.dash{
  height:0;border-top:2px dashed var(--lime);
  margin:22px 0;width:120px;
}
.step-list{display:flex;flex-direction:column;gap:16px;margin-top:8px;}
.step-list li{display:flex;gap:14px;align-items:flex-start;}
.step-dot{
  flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  background:var(--ink);color:var(--lime);
  display:grid;place-items:center;
  font-family:Inter,ui-monospace,monospace;font-size:13px;font-weight:700;
}
.step-list strong{display:block;font-size:15.5px;margin-bottom:2px;}
.step-list span{font-size:14.5px;color:var(--txt-soft);}

/* ---------- 数据与评价 ---------- */
.stats-band{background:var(--ink);color:var(--dark-txt);border-radius:24px;padding:44px 28px;}
@media(min-width:1024px){.stats-band{padding:56px 48px;}}
.stats-grid{display:grid;gap:28px;}
@media(min-width:640px){.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat .val{
  font-family:Inter,ui-monospace,monospace;font-variant-numeric:tabular-nums;
  font-size:clamp(2rem,4vw,2.75rem);font-weight:900;color:var(--lime);letter-spacing:-.03em;line-height:1;
}
.stat .cap{font-size:14px;color:var(--dark-soft);margin-top:12px;}
.quotes{display:grid;gap:24px;margin-top:32px;}
@media(min-width:1024px){.quotes{grid-template-columns:repeat(2,minmax(0,1fr));}}
.quote{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:18px;
}
.quote.dark{background:var(--ink-soft);border-color:var(--line-dark);color:var(--dark-txt);}
.quote p{font-size:15.5px;line-height:1.85;margin:0;}
.quote.dark p{color:var(--dark-soft);}
.who{display:flex;align-items:center;gap:12px;font-size:13.5px;color:var(--txt-soft);}
.quote.dark .who{color:var(--dark-soft);}
.avatar{
  width:38px;height:38px;border-radius:50%;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-weight:900;font-size:14px;flex:0 0 auto;
}
.quote.dark .avatar{background:var(--teal);color:var(--white);}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:16px;
  padding:0 22px;transition:border-color .25s var(--ease),background-color .25s var(--ease);
}
.faq-item[open]{border-color:var(--lime);background:#FCFDF7;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:16.5px;font-weight:800;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  background:var(--lime);color:var(--ink);
  display:grid;place-items:center;font-size:16px;font-weight:900;line-height:1;
  transition:transform .3s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-body{padding:0 0 22px;color:var(--txt-soft);font-size:15.5px;line-height:1.85;max-width:760px;}

/* ---------- CTA 卡片 ---------- */
.cta-card{
  background:var(--ink);color:var(--dark-txt);
  border-radius:24px;padding:44px 26px;
  position:relative;overflow:hidden;
}
@media(min-width:1024px){.cta-card{padding:64px 56px;}}
.cta-card::before{
  content:"";position:absolute;left:0;right:0;top:34px;
  border-top:2px dashed rgba(198,242,78,.4);
}
.cta-inner{position:relative;display:grid;gap:26px;}
@media(min-width:1024px){.cta-inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:48px;}}
.cta-card h2{font-size:clamp(1.6rem,3vw,2.35rem);color:var(--dark-txt);margin-bottom:12px;}
.cta-card p{color:var(--dark-soft);max-width:600px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.btn-outline-light{border:1px solid rgba(255,255,255,.22);color:var(--dark-txt);background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.08);border-color:var(--lime);color:var(--lime);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--dark-txt);margin-top:72px;padding:64px 0 28px;}
.footer-grid{display:grid;gap:34px;}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;}}
.footer-brand .brand-text{color:var(--dark-txt);font-size:16px;}
.footer-brand p{color:var(--dark-soft);font-size:14.5px;margin-top:16px;max-width:330px;}
.foot-user{display:flex;align-items:center;gap:10px;margin-top:20px;font-size:13.5px;color:var(--dark-soft);}
.foot-user .avatar{width:34px;height:34px;font-size:13px;background:var(--teal);color:var(--white);}
.footer-col h4{font-size:14px;color:var(--dark-txt);letter-spacing:.06em;margin-bottom:18px;text-transform:uppercase;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col li{font-size:14.5px;color:var(--dark-soft);}
.footer-col a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px;}
.footer-legal{
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;
  font-size:13px;color:var(--dark-soft);
}
.footer-legal .mono{font-family:Inter,ui-monospace,monospace;font-variant-numeric:tabular-nums;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--lime);color:var(--ink);
  font-weight:800;font-size:14.5px;
  height:52px;padding:0 24px;border-radius:var(--r-pill);
  box-shadow:var(--sh-2);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .35s var(--ease),transform .35s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{transform:translateY(-2px);}
@media(max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;
    height:60px;justify-content:center;
    padding-bottom:env(safe-area-inset-bottom);
  }
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.on{opacity:1;transform:none;}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}