/* roulang page: index */
:root{
    --ink:#0F1112;
    --paper:#F6F3EC;
    --paper-2:#EFEBE1;
    --paper-3:#F1EDE4;
    --accent:#C25A1E;
    --accent-dark:#A84A16;
    --accent-2:#1E4B3C;
    --muted:#6B6B66;
    --line:#E3DED2;
    --white:#FFFFFF;
    --radius:8px;
    --radius-lg:12px;
    --radius-sm:6px;
    --shadow:0 1px 2px rgba(15,17,18,.06);
    --shadow-hover:0 8px 24px rgba(15,17,18,.10);
    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
    --serif: "Noto Serif SC", "Songti SC", Georgia, serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:132px;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;height:auto;display:block;border-style:none;}
  a{color:inherit;text-decoration:none;}
  button,input,textarea,select{font:inherit;color:inherit;}
  button{background:none;border:none;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
  ul,ol{padding:0;list-style:none;}
  h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;color:var(--ink);}
  ::selection{background:rgba(194,90,30,.2);}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  .read{max-width:46rem;}
  .mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,
  .faq-q:focus-visible,.tab:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
    border-radius:4px;
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:700;line-height:1;
    padding:13px 24px;border-radius:999px;
    border:1px solid transparent;cursor:pointer;
    transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow);}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 6px 18px rgba(194,90,30,.28);}
  .btn-outline{
    background:transparent;color:var(--ink);border:1px solid var(--ink);
    border-radius:var(--radius-sm);padding:12px 22px;
  }
  .btn-outline:hover{background:var(--paper-2);transform:translateY(-1px);}
  .btn-ghost{
    background:transparent;color:var(--ink);border:1px solid var(--line);
    border-radius:var(--radius-sm);padding:11px 18px;font-size:14px;
  }
  .btn-ghost:hover{background:var(--paper-2);border-color:var(--ink);}
  .btn-lg{padding:16px 30px;font-size:16px;}
  .btn-block{width:100%;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--accent);font-weight:700;font-size:14px;
    position:relative;padding-bottom:2px;
  }
  .link-arrow::after{
    content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
    background:var(--accent);transition:width .28s ease;
  }
  .link-arrow:hover::after{width:100%;}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(246,243,236,.92);
    backdrop-filter:saturate(160%) blur(8px);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(15,17,18,.03);
  }
  .header-top-inner{
    display:flex;align-items:center;gap:20px;
    height:64px;
  }
  .brand{display:inline-flex;align-items:baseline;gap:6px;font-size:19px;letter-spacing:-.02em;flex-shrink:0;}
  .brand .brand-a{font-weight:900;color:var(--ink);}
  .brand .brand-dot{color:var(--accent);font-weight:900;}
  .brand .brand-b{font-weight:800;color:var(--accent);}
  .brand .brand-tag{
    font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--muted);
    border:1px solid var(--line);border-radius:999px;padding:2px 8px;margin-left:4px;
  }
  .search-box{
    display:none;flex:1;max-width:400px;margin-left:12px;
    align-items:center;gap:8px;
    background:var(--white);border:1px solid var(--line);border-radius:999px;
    padding:6px 8px 6px 18px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.12);}
  .search-box input{
    flex:1;border:none;background:transparent;outline:none;font-size:14px;padding:6px 0;
  }
  .search-box input::placeholder{color:#A5A099;}
  .search-box button{
    width:34px;height:34px;border-radius:999px;background:var(--ink);color:var(--paper);
    display:flex;align-items:center;justify-content:center;flex-shrink:0;
    transition:background-color .2s ease;
  }
  .search-box button:hover{background:var(--accent);}
  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
  .header-actions .btn-ghost{display:none;}
  .header-actions .btn-primary{display:none;}
  .menu-toggle{
    width:42px;height:42px;border-radius:var(--radius-sm);
    border:1px solid var(--line);color:var(--ink);
    display:flex;align-items:center;justify-content:center;font-size:18px;
  }
  .menu-toggle:hover{background:var(--paper-2);}

  .header-nav{border-top:1px solid var(--line);}
  .tabs-scroll{
    display:flex;align-items:center;gap:10px;
    height:52px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
    -webkit-mask-image:linear-gradient(to right,transparent 0,#000 22px,#000 calc(100% - 22px),transparent 100%);
    mask-image:linear-gradient(to right,transparent 0,#000 22px,#000 calc(100% - 22px),transparent 100%);
  }
  .tabs-scroll::-webkit-scrollbar{display:none;}
  .tab{
    display:inline-flex;align-items:center;flex-shrink:0;
    padding:8px 18px;border-radius:999px;
    border:1px solid var(--line);background:transparent;
    font-size:14px;font-weight:600;color:var(--ink);
    transition:background-color .2s ease,color .2s ease,border-color .2s ease;
  }
  .tab:hover{background:var(--paper-2);}
  .tab.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink);}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:60;
    background:rgba(15,17,18,.45);
    opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
  }
  .drawer.is-open{opacity:1;visibility:visible;}
  .drawer-panel{
    position:absolute;top:0;right:0;bottom:0;width:min(84vw,340px);
    background:var(--paper);border-left:1px solid var(--line);
    padding:24px 22px;overflow-y:auto;
    transform:translateX(100%);transition:transform .26s ease;
  }
  .drawer.is-open .drawer-panel{transform:translateX(0);}
  .drawer-title{font-size:13px;letter-spacing:.14em;color:var(--muted);font-family:var(--mono);margin-bottom:14px;}
  .drawer-link{
    display:block;padding:13px 0;border-bottom:1px solid var(--line);
    font-weight:600;font-size:15px;
  }
  .drawer-link:hover{color:var(--accent);}
  .drawer-close{
    position:absolute;top:16px;right:18px;width:38px;height:38px;
    border:1px solid var(--line);border-radius:var(--radius-sm);
    display:flex;align-items:center;justify-content:center;font-size:18px;
  }
  .drawer-cta{margin-top:22px;}

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0;}
  .section-head{margin-bottom:34px;}
  .eyebrow{
    font-family:var(--mono);font-size:12px;letter-spacing:.16em;
    color:var(--accent);text-transform:uppercase;margin-bottom:14px;
  }
  .eyebrow-muted{color:var(--muted);}
  h1{font-size:clamp(2.2rem,5.2vw,4.25rem);line-height:1.05;font-weight:900;}
  h2{font-size:clamp(1.6rem,3vw,2.5rem);line-height:1.2;}
  h3{font-size:1.125rem;line-height:1.4;}
  .lead{font-size:17px;color:var(--muted);line-height:1.85;}
  .rule{height:1px;background:var(--line);border:none;margin:0;}
  .rule-accent{height:2px;background:var(--accent);border:none;margin:0;}

  /* ---------- Hero ---------- */
  .hero{padding:44px 0 52px;position:relative;overflow:hidden;}
  .hero::before{
    content:"";position:absolute;top:-120px;right:-140px;width:420px;height:420px;
    background:radial-gradient(circle,rgba(194,90,30,.10),rgba(194,90,30,0) 68%);
    pointer-events:none;
  }
  .hero-grid{display:grid;grid-template-columns:1fr;gap:40px;position:relative;}
  .hero h1{margin-bottom:20px;}
  .hero-sub{font-size:17px;color:var(--muted);max-width:34rem;margin-bottom:28px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
  .trust-list{display:grid;grid-template-columns:1fr;gap:18px;border-top:1px solid var(--line);padding-top:22px;}
  .trust-list li{display:flex;gap:14px;align-items:flex-start;}
  .trust-list .mono{font-size:13px;color:var(--accent);font-weight:700;padding-top:3px;}
  .trust-list strong{display:block;font-size:15px;}
  .trust-list p{font-size:13px;color:var(--muted);line-height:1.6;}
  .hero-figure{
    position:relative;border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-hover);
    aspect-ratio:16/10;background:var(--paper-2);
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover;}
  .hero-figure::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(135deg,rgba(194,90,30,.20),rgba(15,17,18,0) 62%);
    pointer-events:none;
  }
  .hero-caption{
    margin-top:12px;font-size:13px;color:var(--muted);
    display:flex;justify-content:space-between;gap:12px;
  }

  /* ---------- 卖点区 ---------- */
  .value-grid{display:grid;grid-template-columns:1fr;gap:36px;}
  .value-sticky{align-self:start;}
  .value-sticky h2{margin-bottom:14px;}
  .value-list{display:flex;flex-direction:column;}
  .value-item{
    display:grid;grid-template-columns:auto 1fr;gap:20px;
    padding:26px 0;border-top:1px solid var(--line);
    transition:transform .24s ease;
  }
  .value-item:last-child{border-bottom:1px solid var(--line);}
  .value-item .num{
    font-family:var(--mono);font-size:14px;font-weight:700;color:var(--accent);
    padding-top:4px;letter-spacing:.04em;
  }
  .value-item h3{margin-bottom:8px;}
  .value-item p{color:var(--muted);font-size:15px;max-width:52ch;}

  /* ---------- 演示区 ---------- */
  .demo-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
  .demo-tab{
    padding:9px 20px;border-radius:999px;border:1px solid var(--line);
    font-size:14px;font-weight:600;color:var(--ink);
    transition:background-color .2s ease,color .2s ease,border-color .2s ease;
  }
  .demo-tab:hover{background:var(--paper-2);}
  .demo-tab.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink);}
  .demo-panel{display:none;}
  .demo-panel.is-active{display:block;animation:fadeUp .28s ease both;}
  .demo-grid{display:grid;grid-template-columns:1fr;gap:30px;align-items:start;}
  .demo-points li{
    display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
    font-size:15px;color:#2B2D2E;
  }
  .demo-points li span{color:var(--accent);font-family:var(--mono);font-size:13px;padding-top:3px;}
  .demo-figure{
    border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
    background:var(--white);box-shadow:var(--shadow);aspect-ratio:16/10;
  }
  .demo-figure img{width:100%;height:100%;object-fit:cover;}

  /* ---------- 证据区 ---------- */
  .proof{
    background:var(--ink);color:var(--paper);
    border-top:1px solid var(--accent);border-bottom:1px solid var(--accent);
    padding:60px 0;
  }
  .proof h2{color:var(--paper);}
  .proof .lead{color:#B9B4A9;}
  .proof-stats{
    display:grid;grid-template-columns:repeat(2,1fr);gap:26px;
    margin:34px 0 46px;padding-bottom:38px;border-bottom:1px solid rgba(246,243,236,.14);
  }
  .stat .stat-num{
    font-family:var(--mono);font-size:clamp(1.7rem,4vw,2.6rem);
    font-weight:700;color:var(--paper);line-height:1.1;
  }
  .stat .stat-num i{font-style:normal;font-size:14px;color:var(--accent);margin-left:4px;}
  .stat p{font-size:13px;color:#9A958B;margin-top:8px;}
  .proof-wall{display:grid;grid-template-columns:1fr;gap:22px;}
  .wall-card{border:1px solid rgba(246,243,236,.16);border-radius:var(--radius);overflow:hidden;background:rgba(246,243,236,.03);}
  .wall-card img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .4s ease;}
  .wall-card:hover img{transform:scale(1.03);}
  .wall-card figcaption{padding:14px 16px;font-size:13px;color:#B9B4A9;border-top:1px solid rgba(246,243,236,.12);}

  /* ---------- 方案区 ---------- */
  .plan-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  .plan-main{
    background:var(--white);border:2px solid var(--accent);border-radius:var(--radius-lg);
    padding:32px 28px;box-shadow:var(--shadow-hover);position:relative;
  }
  .plan-badge{
    position:absolute;top:-13px;left:28px;
    background:var(--accent);color:#fff;font-size:12px;font-weight:700;
    padding:5px 14px;border-radius:999px;letter-spacing:.04em;
  }
  .plan-side{display:flex;flex-direction:column;gap:20px;}
  .plan-card{
    background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px;box-shadow:var(--shadow);
    transition:transform .24s ease,box-shadow .24s ease;
  }
  .plan-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
  .plan-tag{
    display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:.08em;
    color:var(--accent-2);border:1px solid var(--accent-2);border-radius:999px;
    padding:3px 10px;margin-bottom:14px;
  }
  .plan-title{font-size:20px;font-weight:800;margin-bottom:8px;}
  .plan-desc{font-size:14px;color:var(--muted);margin-bottom:18px;}
  .plan-list{margin-bottom:22px;}
  .plan-list li{
    display:flex;gap:10px;font-size:14px;color:#33352F;
    padding:7px 0;border-bottom:1px solid var(--line);
  }
  .plan-list li:last-child{border-bottom:none;}
  .plan-list li::before{content:"—";color:var(--accent);flex-shrink:0;}

  /* ---------- 最新信息 ---------- */
  .news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
  .news-grid{display:grid;grid-template-columns:1fr;gap:22px;}
  .news-card{
    display:flex;flex-direction:column;
    background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow);
    transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  }
  .news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6CFC0;}
  .news-card .badge{margin-bottom:14px;}
  .news-card h3{
    font-size:16px;line-height:1.5;margin-bottom:10px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-card p{
    font-size:14px;color:var(--muted);line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
    margin-bottom:18px;
  }
  .news-meta{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;
    border-top:1px solid var(--line);padding-top:14px;
  }
  .news-meta time{font-family:var(--mono);font-size:12px;color:var(--muted);}
  .news-meta .arrow{color:var(--accent);font-weight:700;transition:transform .24s ease;}
  .news-card:hover .arrow{transform:translateX(4px);}
  .badge{
    display:inline-flex;align-items:center;
    font-size:12px;letter-spacing:.02em;font-weight:600;
    color:var(--accent-2);border:1px solid var(--accent-2);
    border-radius:999px;padding:3px 11px;background:rgba(30,75,60,.05);
  }
  .empty-state{
    max-width:420px;margin:0 auto;text-align:center;
    border:1px dashed var(--line);border-radius:var(--radius-lg);padding:44px 26px;
    background:var(--white);
  }
  .empty-frame{
    width:78px;height:58px;margin:0 auto 18px;
    border:1px solid var(--line);border-radius:var(--radius-sm);
    display:flex;align-items:center;justify-content:center;
    color:var(--accent);font-family:var(--mono);font-size:12px;
    background:var(--paper);
  }
  .empty-state p{color:var(--muted);font-size:14px;margin-bottom:18px;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:760px;margin:0 auto;}
  .faq-item{border-top:1px solid var(--line);}
  .faq-item:last-child{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    padding:20px 0;text-align:left;font-size:16px;font-weight:700;color:var(--ink);
    transition:color .2s ease;
  }
  .faq-q:hover{color:var(--accent);}
  .faq-q .sign{
    font-family:var(--mono);font-size:20px;line-height:1;color:var(--accent);
    flex-shrink:0;width:22px;text-align:center;
  }
  .faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease;}
  .faq-a p{padding:0 0 22px;color:var(--muted);font-size:15px;max-width:64ch;}
  .faq-item.is-open .faq-a{max-height:340px;}

  /* ---------- 最终 CTA ---------- */
  .final-cta{background:var(--accent-2);color:var(--paper);padding:60px 0;border-radius:0;}
  .final-cta h2{color:var(--paper);margin-bottom:16px;}
  .final-cta .lead{color:#CBD8D2;margin-bottom:0;}
  .cta-grid{display:grid;grid-template-columns:1fr;gap:38px;align-items:start;}
  .contact-form .field{margin-bottom:16px;}
  .contact-form label{display:block;font-size:13px;color:#CBD8D2;margin-bottom:7px;letter-spacing:.02em;}
  .contact-form input,.contact-form textarea{
    width:100%;background:rgba(246,243,236,.06);
    border:1px solid rgba(246,243,236,.28);border-radius:var(--radius-sm);
    padding:12px 14px;font-size:15px;color:var(--paper);outline:none;
    transition:border-color .2s ease,background-color .2s ease;
    resize:vertical;
  }
  .contact-form input::placeholder,.contact-form textarea::placeholder{color:rgba(246,243,236,.5);}
  .contact-form input:focus,.contact-form textarea:focus{border-color:var(--accent);background:rgba(246,243,236,.1);}
  .form-note{font-size:12px;color:#9FB4AB;margin-top:12px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:var(--paper);padding:56px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:34px;}
  .footer-col h4{
    color:var(--paper);font-size:14px;letter-spacing:.06em;margin-bottom:16px;
    padding-bottom:12px;border-bottom:1px solid rgba(246,243,236,.16);
  }
  .footer-brand .brand{padding:0;}
  .footer-brand .brand-a{color:var(--paper);}
  .footer-brand .brand-b{color:var(--accent);}
  .footer-brand .brand-tag{color:#9A958B;border-color:rgba(246,243,236,.2);}
  .footer-brand p{font-size:14px;color:#9A958B;margin-top:16px;max-width:34ch;}
  .footer-links li{margin-bottom:11px;}
  .footer-links a{font-size:14px;color:#B9B4A9;position:relative;padding-bottom:2px;}
  .footer-links a::after{
    content:"";position:absolute;left:0;bottom:0;width:0;height:1px;
    background:var(--accent);transition:width .26s ease;
  }
  .footer-links a:hover{color:var(--accent);}
  .footer-links a:hover::after{width:100%;}
  .footer-note{font-size:13px;color:#9A958B;line-height:1.8;}
  .footer-bottom{
    margin-top:46px;border-top:1px solid rgba(246,243,236,.16);
    padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
    justify-content:space-between;align-items:center;
  }
  .footer-bottom span,.footer-bottom a{font-size:13px;color:#8C877D;font-family:var(--mono);}
  .footer-bottom a:hover{color:var(--accent);}

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed;right:20px;bottom:24px;z-index:40;
    display:inline-flex;align-items:center;gap:8px;
    background:var(--accent);color:#fff;font-weight:700;font-size:14px;
    padding:14px 22px;border-radius:999px;
    box-shadow:0 6px 20px rgba(194,90,30,.28);
    opacity:0;visibility:hidden;transform:translateY(10px);
    transition:opacity .26s ease,transform .26s ease,visibility .26s ease,background-color .2s ease;
  }
  .float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
  .float-cta:hover{background:var(--accent-dark);}

  /* ---------- 动画 ---------- */
  @keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
  .reveal{opacity:0;transform:translateY(8px);transition:opacity .32s ease,transform .32s ease;}
  .reveal.in-view{opacity:1;transform:translateY(0);}

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

  /* ---------- 断点 ---------- */
  @media (min-width:640px){
    .container-x{padding:0 24px;}
    .trust-list{grid-template-columns:repeat(3,1fr);gap:20px;}
    .news-grid{grid-template-columns:repeat(2,1fr);}
    .proof-stats{grid-template-columns:repeat(4,1fr);}
    .proof-wall{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (min-width:768px){
    .hero{padding:60px 0 66px;}
    .header-top-inner{height:72px;}
    .search-box{display:flex;}
    .header-actions .btn-ghost{display:inline-flex;}
    .header-actions .btn-primary{display:inline-flex;}
    .menu-toggle{display:none;}
    .demo-grid{grid-template-columns:1fr 1fr;}
    .value-item{padding:30px 0;}
  }
  @media (min-width:1024px){
    html{scroll-padding-top:150px;}
    .section{padding:96px 0;}
    .header-top-inner{height:80px;}
    .hero{padding:72px 0 88px;}
    .hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:start;}
    .hero-cta{margin-bottom:40px;}
    .value-grid{grid-template-columns:4fr 8fr;gap:56px;}
    .value-sticky{position:sticky;top:160px;}
    .value-item:nth-child(2),.value-item:nth-child(4){margin-left:24px;}
    .demo-grid{grid-template-columns:5fr 7fr;gap:44px;}
    .proof{padding:88px 0;}
    .proof-stats{gap:32px;margin:44px 0 56px;}
    .plan-grid{grid-template-columns:5fr 7fr;gap:32px;align-items:start;}
    .news-grid{grid-template-columns:repeat(3,1fr);}
    .cta-grid{grid-template-columns:5fr 7fr;gap:64px;}
    .final-cta{padding:88px 0;}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;}
    .site-footer{padding:72px 0 0;}
  }
  @media (max-width:519px){
    .hero-cta .btn{width:100%;}
    .float-cta{right:14px;bottom:16px;padding:13px 18px;font-size:13px;}
  }

/* roulang page: article */
:root{
    --ink:#0F1112;
    --paper:#F6F3EC;
    --accent:#C25A1E;
    --accent-hover:#A84A16;
    --accent-2:#1E4B3C;
    --muted:#6B6B66;
    --line:#E3DED2;
    --surface:#FFFFFF;
    --hover-bg:#EFEBE1;
    --row-hover:#F1EDE4;
    --radius:8px;
    --radius-lg:12px;
    --radius-sm:6px;
    --shadow:0 1px 2px rgba(15,17,18,.06);
    --shadow-hover:0 8px 24px rgba(15,17,18,.10);
    --font-cn:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
    --font-serif:"Noto Serif SC",Georgia,serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
    padding-bottom:74px;
  }
  h1,h2,h3,h4{margin:0;letter-spacing:-0.02em;line-height:1.25}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .mono{font-family:var(--font-mono)}
  .container-x{max-width:1200px;margin:0 auto;padding:0 20px}
  .prose-width{max-width:46rem}

  /* ---------- 顶部第一行 ---------- */
  .header-top{
    position:sticky;top:0;z-index:50;
    background:rgba(246,243,236,.94);
    backdrop-filter:saturate(140%) blur(8px);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(15,17,18,.03);
  }
  .header-inner{display:flex;align-items:center;gap:14px;height:64px}
  .brand{display:flex;align-items:baseline;gap:2px;font-weight:900;font-size:1.12rem;letter-spacing:-0.02em;white-space:nowrap}
  .brand-a{color:var(--ink)}
  .brand-dot{color:var(--line)}
  .brand-b{color:var(--accent)}
  .brand-tag{
    font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;
    color:var(--muted);border:1px solid var(--line);border-radius:999px;
    padding:2px 6px;margin-left:8px;line-height:1.4;
  }
  .search-form{display:none;position:relative;flex:1;max-width:400px;margin-left:26px}
  .search-form input{
    width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
    background:var(--surface);padding:0 46px 0 18px;font-size:14px;
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .search-form input::placeholder{color:#9a978f}
  .search-form input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.12);outline:none}
  .search-btn{
    position:absolute;right:6px;top:50%;transform:translateY(-50%);
    width:30px;height:30px;border-radius:999px;border:0;
    background:var(--ink);color:var(--paper);display:grid;place-items:center;cursor:pointer;
    transition:background .2s ease;
  }
  .search-btn:hover{background:var(--accent)}
  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    font-size:14px;font-weight:600;line-height:1;cursor:pointer;
    border:1px solid transparent;transition:all .2s ease;white-space:nowrap;
  }
  .btn-primary{
    background:var(--accent);color:#fff;border-radius:999px;padding:12px 22px;
    box-shadow:var(--shadow);
  }
  .btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{
    background:transparent;color:var(--ink);border:1px solid var(--ink);
    border-radius:var(--radius-sm);padding:11px 18px;
  }
  .btn-outline:hover{background:var(--hover-bg)}
  .btn-ghost{background:transparent;color:var(--muted);padding:8px 10px;border-radius:var(--radius-sm)}
  .btn-ghost:hover{color:var(--ink);background:var(--hover-bg)}
  .hamburger{
    display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);
    border-radius:var(--radius-sm);background:var(--surface);cursor:pointer;
  }
  .hamburger span{display:block;width:16px;height:2px;background:var(--ink);margin:2px 0;border-radius:2px}

  /* ---------- 第二行频道 Tabs ---------- */
  .header-nav{
    position:sticky;top:64px;z-index:40;
    background:rgba(246,243,236,.97);
    border-bottom:1px solid var(--line);
  }
  .tabs-wrap{position:relative}
  .tabs-wrap::before,.tabs-wrap::after{
    content:"";position:absolute;top:0;bottom:0;width:26px;pointer-events:none;z-index:2;
  }
  .tabs-wrap::before{left:0;background:linear-gradient(90deg,var(--paper),rgba(246,243,236,0))}
  .tabs-wrap::after{right:0;background:linear-gradient(270deg,var(--paper),rgba(246,243,236,0))}
  .tabs-scroll{
    display:flex;gap:8px;overflow-x:auto;padding:9px 0;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .tabs-scroll::-webkit-scrollbar{display:none}
  .tab{
    flex:0 0 auto;padding:7px 16px;border-radius:999px;border:1px solid var(--line);
    font-size:14px;color:var(--muted);transition:all .2s ease;
  }
  .tab:hover{background:var(--hover-bg);color:var(--ink)}
  .tab.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}

  /* ---------- 抽屉 ---------- */
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:290px;max-width:86vw;
    background:var(--paper);border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .26s ease;z-index:60;
    padding:22px 20px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-backdrop{
    position:fixed;inset:0;background:rgba(15,17,18,.42);opacity:0;visibility:hidden;
    transition:opacity .24s ease;z-index:55;
  }
  .drawer-backdrop.is-open{opacity:1;visibility:visible}
  .drawer h5{font-size:12px;letter-spacing:.1em;color:var(--muted);font-family:var(--font-mono);margin:18px 0 10px;text-transform:uppercase}
  .drawer a.drawer-link{
    display:block;padding:11px 12px;border-radius:var(--radius-sm);font-size:15px;color:var(--ink);
    border:1px solid transparent;
  }
  .drawer a.drawer-link:hover{background:var(--hover-bg);border-color:var(--line)}
  .drawer-close{
    display:grid;place-items:center;width:36px;height:36px;border:1px solid var(--line);
    border-radius:var(--radius-sm);background:var(--surface);cursor:pointer;margin-left:auto;
  }

  /* ---------- 页面主体 ---------- */
  .page-main{padding:26px 0 0}
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--muted);font-family:var(--font-mono);
  }
  .breadcrumb a{border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
  .breadcrumb a:hover{color:var(--accent);border-color:var(--accent)}
  .breadcrumb .sep{color:var(--line)}
  .breadcrumb .current{color:var(--ink);font-family:var(--font-cn);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

  .article-head{margin-top:22px;max-width:52rem}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
    border:1px solid var(--accent-2);color:var(--accent-2);background:rgba(30,75,60,.055);
    font-size:12px;letter-spacing:.02em;line-height:1.7;
  }
  .article-title{
    font-size:clamp(1.72rem,3.7vw,2.7rem);font-weight:900;line-height:1.22;
    margin-top:16px;letter-spacing:-0.02em;
  }
  .meta-row{
    display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:16px;
    font-size:13px;color:var(--muted);font-family:var(--font-mono);
  }
  .meta-row .dot{color:var(--line)}
  .article-cover{
    margin-top:24px;border-radius:var(--radius);overflow:hidden;
    border:1px solid var(--line);aspect-ratio:16/9;background:var(--hover-bg);
  }
  .article-cover img{width:100%;height:100%;object-fit:cover}

  .layout{
    display:grid;grid-template-columns:minmax(0,1fr);gap:44px;
    margin-top:38px;align-items:start;
  }

  /* ---------- 正文排版 ---------- */
  .cms-body{font-size:16.5px;line-height:1.85;color:#1c1f21;max-width:46rem}
  .cms-body > *:first-child{margin-top:0}
  .cms-body p{margin:0 0 1.2em}
  .cms-body h2{
    font-size:clamp(1.28rem,2.2vw,1.6rem);font-weight:800;line-height:1.35;
    margin:2.1em 0 .8em;padding-left:12px;border-left:2px solid var(--accent);
  }
  .cms-body h3{font-size:1.16rem;font-weight:800;margin:1.8em 0 .6em}
  .cms-body h4{font-size:1.02rem;font-weight:800;margin:1.5em 0 .5em}
  .cms-body ul,.cms-body ol{margin:0 0 1.2em;padding-left:1.45em}
  .cms-body ul li{list-style:disc;margin-bottom:.5em}
  .cms-body ol li{list-style:decimal;margin-bottom:.5em}
  .cms-body li::marker{color:var(--accent)}
  .cms-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
  .cms-body a:hover{color:var(--accent-hover)}
  .cms-body strong{font-weight:800}
  .cms-body blockquote{
    margin:1.6em 0;padding:16px 20px;background:var(--hover-bg);
    border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;
    color:#3a3a36;font-family:var(--font-serif);
  }
  .cms-body img{border-radius:var(--radius-sm);margin:1.6em auto;border:1px solid var(--line)}
  .cms-body figure{margin:1.6em 0}
  .cms-body figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:8px}
  .cms-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
  .cms-body code{background:var(--hover-bg);padding:2px 6px;border-radius:4px;font-family:var(--font-mono);font-size:.9em}
  .cms-body pre{background:var(--ink);color:var(--paper);padding:16px 18px;border-radius:var(--radius);overflow-x:auto;font-family:var(--font-mono);font-size:14px;line-height:1.7;margin:1.6em 0}
  .cms-body pre code{background:none;padding:0;color:inherit}
  .cms-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14.5px}
  .cms-body th,.cms-body td{border:1px solid var(--line);padding:11px 13px;text-align:left}
  .cms-body th{background:var(--hover-bg);font-weight:700}
  .cms-body tr:hover td{background:var(--row-hover)}

  /* ---------- 空态 ---------- */
  .empty-state{
    max-width:420px;margin:0 auto;text-align:center;
    border:1px dashed var(--line);border-radius:var(--radius-lg);
    padding:44px 26px;background:var(--surface);
  }
  .empty-illustration{
    width:96px;height:72px;margin:0 auto 18px;border:1.5px solid var(--line);
    border-radius:var(--radius);position:relative;
  }
  .empty-illustration::before{
    content:"";position:absolute;left:14px;right:14px;top:18px;height:1.5px;background:var(--line);
  }
  .empty-illustration::after{
    content:"";position:absolute;left:14px;right:34px;top:36px;height:1.5px;background:var(--line);
  }
  .empty-state p{color:var(--muted);font-size:14.5px;margin:0 0 18px}

  /* ---------- 文末 ---------- */
  .end-block{margin-top:44px;max-width:46rem}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;padding-top:22px;border-top:1px solid var(--line)}
  .tag{
    display:inline-block;padding:5px 13px;border-radius:999px;font-size:13px;
    border:1px solid var(--line);color:var(--muted);background:var(--surface);
    transition:all .2s ease;
  }
  .tag:hover{border-color:var(--accent);color:var(--accent)}
  .post-nav{display:grid;gap:14px;margin-top:34px}
  .post-nav-item{
    display:block;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);
    background:var(--surface);box-shadow:var(--shadow);transition:all .2s ease;
  }
  .post-nav-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#d6cfc0}
  .post-nav-item .label{font-size:12px;font-family:var(--font-mono);color:var(--muted);letter-spacing:.04em}
  .post-nav-item .title{
    display:block;margin-top:8px;font-weight:700;font-size:15.5px;line-height:1.5;
    overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  }
  .back-list{
    display:inline-flex;align-items:center;gap:8px;margin-top:26px;
    color:var(--accent);font-size:14px;font-weight:600;
  }
  .back-list:hover{text-decoration:underline;text-underline-offset:4px}

  /* ---------- 相关推荐 ---------- */
  .related{margin-top:64px;padding-top:34px;border-top:1px solid var(--line)}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap}
  .section-head h2{font-size:clamp(1.4rem,2.4vw,1.85rem);font-weight:900}
  .section-head .more{color:var(--accent);font-size:14px;font-weight:600}
  .section-head .more:hover{text-decoration:underline;text-underline-offset:4px}
  .card-grid{display:grid;gap:22px;margin-top:26px}
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    display:flex;flex-direction:column;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#d6cfc0}
  .card-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--hover-bg)}
  .card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .34s ease}
  .card:hover .card-thumb img{transform:scale(1.03)}
  .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{font-size:1.05rem;font-weight:800;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-body p{color:var(--muted);font-size:14px;line-height:1.7;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
  .card-meta .date{font-family:var(--font-mono);font-size:12.5px;color:var(--muted)}
  .card-meta .arrow{color:var(--accent);font-size:14px;font-weight:700;transition:transform .2s ease}
  .card:hover .card-meta .arrow{transform:translateX(3px)}

  /* ---------- 侧栏 ---------- */
  .side-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
    padding:22px;box-shadow:var(--shadow);
  }
  .side-card + .side-card{margin-top:20px}
  .side-card h4{font-size:13px;font-family:var(--font-mono);letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
  .side-list{margin-top:14px}
  .side-list li + li{border-top:1px solid var(--line)}
  .side-list a{display:block;padding:12px 0;font-size:14.5px;line-height:1.6;transition:color .2s ease}
  .side-list a:hover{color:var(--accent)}
  .side-list .idx{font-family:var(--font-mono);font-size:12px;color:var(--accent);margin-right:8px}

  /* ---------- 最终 CTA ---------- */
  .final-cta{margin-top:76px;background:var(--ink);color:var(--paper);border-top:1px solid var(--accent);border-bottom:1px solid var(--accent)}
  .final-cta-inner{display:grid;gap:34px;padding:58px 0}
  .final-cta h2{font-size:clamp(1.6rem,2.8vw,2.2rem);font-weight:900;color:var(--paper)}
  .final-cta .lead{margin-top:14px;color:#cfc9bd;font-size:15.5px;max-width:34rem}
  .mini-list{margin-top:22px;display:grid;gap:10px}
  .mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#cfc9bd}
  .mini-list .num{font-family:var(--font-mono);color:var(--accent);font-size:13px;line-height:1.9}
  .form-card{background:#161819;border:1px solid #2a2c2d;border-radius:var(--radius-lg);padding:24px}
  .form-card label{display:block;font-size:13px;color:#a8a29a;margin-bottom:7px;font-family:var(--font-mono)}
  .form-card input,.form-card textarea{
    width:100%;background:#0f1112;border:1px solid #2a2c2d;border-radius:var(--radius-sm);
    padding:12px 14px;color:var(--paper);font-size:14.5px;transition:border-color .2s ease;
  }
  .form-card input::placeholder,.form-card textarea::placeholder{color:#6d6a64}
  .form-card input:focus,.form-card textarea:focus{border-color:var(--accent);outline:none}
  .form-row + .form-row{margin-top:16px}
  .form-note{margin-top:14px;font-size:12.5px;color:#8d8880;line-height:1.7}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:var(--paper);margin-top:0;padding:54px 0 26px}
  .footer-grid{display:grid;gap:30px}
  .footer-col + .footer-col{border-top:1px solid #24272a;padding-top:24px}
  .footer-brand .brand{font-size:1.2rem;color:var(--paper)}
  .footer-brand .brand-a{color:var(--paper)}
  .footer-brand .brand-dot{color:#5c5f60}
  .footer-brand .brand-b{color:var(--accent)}
  .footer-brand .brand-tag{border-color:#2f3335;color:#8d8880}
  .footer-brand p{margin-top:16px;color:#a8a29a;font-size:14.5px;max-width:30rem}
  .footer-col h4{font-size:13px;font-family:var(--font-mono);letter-spacing:.08em;color:#8d8880;text-transform:uppercase}
  .footer-links{margin-top:14px;display:grid;gap:10px}
  .footer-links a{color:#d7d2c8;font-size:14.5px;position:relative;display:inline-block}
  .footer-links a::after{
    content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--accent);
    transition:width .24s ease;
  }
  .footer-links a:hover{color:var(--accent)}
  .footer-links a:hover::after{width:100%}
  .footer-note{color:#a8a29a;font-size:14.5px;margin-top:14px}
  .footer-bottom{
    margin-top:38px;padding-top:20px;border-top:1px solid #24272a;
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:#8d8880;font-family:var(--font-mono);
  }
  .footer-bottom a{color:#d7d2c8}
  .footer-bottom a:hover{color:var(--accent)}

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed;right:20px;bottom:22px;z-index:35;
    background:var(--accent);color:#fff;border-radius:999px;
    padding:14px 24px;font-size:14.5px;font-weight:700;
    box-shadow:0 6px 18px rgba(194,90,30,.28);
    opacity:0;visibility:hidden;transform:translateY(10px);
    transition:opacity .26s ease,transform .26s ease,visibility .26s ease,background .2s ease;
  }
  .float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
  .float-cta:hover{background:var(--accent-hover);transform:translateY(-1px)}

  /* ---------- 入场动效 ---------- */
  .reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease}
  .reveal.is-in{opacity:1;transform:translateY(0)}

  /* ---------- 响应式 ---------- */
  @media (min-width:520px){
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .post-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
  }
  @media (min-width:768px){
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr}
    .footer-col + .footer-col{border-top:0;padding-top:0;border-left:1px solid #24272a;padding-left:26px}
    .final-cta-inner{grid-template-columns:1fr 1fr;align-items:start;padding:72px 0}
  }
  @media (min-width:1024px){
    body{padding-bottom:0}
    .header-inner{height:80px}
    .header-nav{top:80px}
    .search-form{display:block}
    .hamburger{display:none}
    .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .layout{grid-template-columns:minmax(0,1fr) 300px;gap:56px}
    .side-sticky{position:sticky;top:158px}
    .float-cta{right:32px;bottom:32px}
  }
  @media (max-width:519px){
    .float-cta{left:16px;right:16px;bottom:14px;text-align:center}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category1 */
:root{
  --ink:#0F1112;
  --paper:#F6F3EC;
  --accent:#C25A1E;
  --accent-dark:#A84A16;
  --accent-2:#1E4B3C;
  --line:#E3DED2;
  --muted:#6B6B66;
  --card:#FFFFFF;
  --hover:#EFEBE1;
  --row-hover:#F1EDE4;
  --radius:8px;
  --radius-lg:12px;
  --shadow:0 1px 2px rgba(15,17,18,.06);
  --shadow-lg:0 8px 24px rgba(15,17,18,.10);
  --font-cn:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;line-height:1.2;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.reading{max-width:46rem;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,243,236,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow);
}
.header-top{
  display:flex;align-items:center;gap:20px;
  height:64px;
}
.brand{display:flex;align-items:baseline;gap:6px;flex-shrink:0;}
.brand-a{font-weight:900;font-size:1.2rem;letter-spacing:-.02em;color:var(--ink);}
.brand-dot{color:var(--accent);font-weight:900;}
.brand-b{font-weight:800;font-size:1.05rem;color:var(--accent);}
.brand-tag{
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.14em;
  color:var(--muted);border:1px solid var(--line);border-radius:999px;
  padding:1px 7px;margin-left:4px;transform:translateY(-3px);
}
.search-wrap{flex:1;max-width:420px;position:relative;display:none;}
.search-wrap input{
  width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--card);padding:0 46px 0 18px;font-size:.9rem;color:var(--ink);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.search-wrap input::placeholder{color:#9A968C;}
.search-wrap input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.12);}
.search-wrap button{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:999px;display:grid;place-items:center;
  color:var(--muted);transition:color .2s ease;
}
.search-wrap button:hover{color:var(--accent);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:.9rem;padding:10px 22px;border-radius:999px;
  transition:background-color .2s ease, color .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-lg);}
.btn-ghost{
  border:1px solid var(--ink);border-radius:6px;color:var(--ink);background:transparent;padding:9px 18px;
}
.btn-ghost:hover{background:var(--hover);}
.btn-outline{
  border:1px solid var(--line);border-radius:6px;background:var(--card);color:var(--ink);padding:9px 18px;
}
.btn-outline:hover{background:var(--hover);border-color:var(--ink);}
.btn-light{background:var(--paper);color:var(--ink);}
.btn-light:hover{background:#fff;transform:translateY(-1px);}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;pointer-events:none;box-shadow:none;}
.hamburger{
  width:42px;height:42px;border-radius:6px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:1rem;
}
.hamburger:hover{background:var(--hover);}

.header-nav{border-top:1px solid var(--line);}
.tabs-scroll{
  display:flex;align-items:center;gap:10px;
  height:52px;overflow-x:auto;scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;font-size:.875rem;font-weight:600;
  padding:7px 16px;border-radius:999px;border:1px solid var(--line);
  color:var(--muted);background:transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{background:var(--hover);color:var(--ink);}
.tab.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper);}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:60;background:rgba(15,17,18,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;right:0;top:0;bottom:0;width:min(84vw,340px);
  background:var(--paper);padding:22px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;gap:8px;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-title{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;color:var(--muted);margin-bottom:8px;}
.drawer-link{
  padding:12px 4px;border-bottom:1px solid var(--line);font-weight:600;
  display:flex;justify-content:space-between;align-items:center;
}
.drawer-link:hover{color:var(--accent);}
.drawer-close{align-self:flex-end;font-size:1.15rem;padding:6px 10px;border-radius:6px;}
.drawer-close:hover{background:var(--hover);}

/* ===== Page head ===== */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.page-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.14;
}
.page-hero-inner{position:relative;padding:44px 0 46px;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:.82rem;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:#BDB8AC;}
.breadcrumb .current{color:var(--ink);font-weight:600;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.1em;color:var(--accent);
  margin-bottom:14px;
}
.eyebrow::after{content:"";width:44px;height:2px;background:var(--accent);display:block;}
.page-hero h1{
  font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.1;font-weight:900;
  margin-bottom:16px;
}
.page-hero .lead{
  max-width:46rem;font-size:1.02rem;color:#3C3C39;line-height:1.85;
}
.meta-row{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.75rem;letter-spacing:.02em;font-weight:600;
  padding:5px 12px;border-radius:999px;border:1px solid var(--accent-2);
  color:var(--accent-2);background:rgba(30,75,60,.05);
}
.badge-soft{border-color:var(--line);color:var(--muted);background:var(--card);}

/* ===== Layout ===== */
.section{padding:56px 0;}
.section-alt{background:#F1EDE4;}
.split{display:grid;grid-template-columns:1fr;gap:36px;}

/* sticky side */
.side-sticky{position:static;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow);
}
.side-num{
  font-family:var(--font-mono);font-size:2.4rem;font-weight:700;color:var(--accent);
  line-height:1;margin-bottom:10px;
}
.side-title{font-size:1.15rem;font-weight:800;margin-bottom:10px;}
.side-desc{font-size:.9rem;color:var(--muted);line-height:1.8;}
.toc{margin-top:22px;border-top:1px solid var(--line);padding-top:18px;}
.toc h4{font-size:.72rem;letter-spacing:.16em;font-family:var(--font-mono);color:var(--muted);margin-bottom:12px;}
.toc a{
  display:block;font-size:.88rem;padding:7px 0;color:#3C3C39;
  border-bottom:1px solid transparent;transition:color .2s ease,padding-left .2s ease;
}
.toc a:hover{color:var(--accent);padding-left:6px;}

/* list items */
.list-item{
  display:grid;grid-template-columns:1fr;gap:20px;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.list-item:first-of-type{padding-top:0;}
.thumb{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--card);box-shadow:var(--shadow);
}
.thumb img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  transition:transform .35s ease;
}
.thumb:hover img{transform:scale(1.03);}
.item-head{display:flex;align-items:center;gap:12px;margin-bottom:10px;}
.item-idx{
  font-family:var(--font-mono);font-size:.8rem;font-weight:700;color:var(--accent);
  border:1px solid var(--line);border-radius:6px;padding:2px 8px;background:var(--card);
}
.item-title{font-size:1.22rem;font-weight:800;line-height:1.4;}
.item-title a:hover{color:var(--accent);}
.item-desc{color:var(--muted);font-size:.95rem;line-height:1.85;}
.item-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:14px;font-size:.82rem;color:var(--muted);}
.link-arrow{color:var(--accent);font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.link-underline{position:relative;}
.link-underline::after{
  content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:currentColor;
  transition:width .25s ease;
}
.link-underline:hover::after{width:100%;}

/* steps */
.step-list{border-left:2px solid var(--accent);margin-left:8px;padding-left:0;}
.step{
  position:relative;padding:0 0 26px 26px;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:-7px;top:9px;width:12px;height:12px;border-radius:999px;
  background:var(--paper);border:2px solid var(--accent);
}
.step-num{font-family:var(--font-mono);font-size:.78rem;color:var(--accent);font-weight:700;letter-spacing:.08em;}
.step h3{font-size:1.05rem;font-weight:800;margin:6px 0 8px;}
.step p{color:var(--muted);font-size:.92rem;}

/* cards */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D6D0C2;}
.card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.card h3{font-size:1.05rem;font-weight:800;margin-bottom:8px;}
.card p{font-size:.9rem;color:var(--muted);}

/* faq */
.faq-list{max-width:760px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 0;font-size:1rem;font-weight:700;text-align:left;
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  font-family:var(--font-mono);font-size:1.15rem;color:var(--accent);
  flex-shrink:0;transition:transform .22s ease;
}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .22s ease;
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{padding:0 0 22px;color:var(--muted);font-size:.94rem;max-width:44rem;}

/* cta */
.cta-block{
  background:var(--accent-2);color:var(--paper);
  border-radius:var(--radius-lg);
  padding:38px 26px;
  display:grid;grid-template-columns:1fr;gap:30px;
  border-top:2px solid var(--accent);
}
.cta-block h2{font-size:clamp(1.5rem,3vw,2.15rem);color:var(--paper);margin-bottom:12px;}
.cta-block p{color:rgba(246,243,236,.82);font-size:.95rem;max-width:34rem;}
.form-grid{display:grid;grid-template-columns:1fr;gap:14px;}
.field label{display:block;font-size:.8rem;color:rgba(246,243,236,.75);margin-bottom:6px;letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;background:rgba(246,243,236,.06);
  border:1px solid rgba(246,243,236,.28);border-radius:6px;
  padding:11px 14px;color:var(--paper);font-size:.92rem;font-family:inherit;
  transition:border-color .2s ease,background-color .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(246,243,236,.45);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);background:rgba(246,243,236,.1);
}
.cta-note{font-size:.78rem;color:rgba(246,243,236,.6);margin-top:10px;}

/* footer */
.site-footer{background:var(--ink);color:var(--paper);padding:56px 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:30px;
}
.footer-col h4{font-size:.82rem;letter-spacing:.12em;font-family:var(--font-mono);color:rgba(246,243,236,.6);margin-bottom:16px;font-weight:600;}
.footer-brand .brand{margin-bottom:14px;display:inline-flex;}
.footer-brand .brand-a{color:var(--paper);}
.footer-brand .brand-tag{color:rgba(246,243,236,.6);border-color:rgba(246,243,236,.25);}
.footer-brand p{font-size:.88rem;color:rgba(246,243,236,.68);max-width:24rem;}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:.88rem;color:rgba(246,243,236,.78);position:relative;
}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent);
  transition:width .25s ease;
}
.footer-links a:hover{color:var(--accent);}
.footer-links a:hover::after{width:100%;}
.footer-note{font-size:.85rem;color:rgba(246,243,236,.62);max-width:22rem;}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(246,243,236,.15);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;align-items:center;
  font-size:.8rem;color:rgba(246,243,236,.55);
}
.footer-bottom a:hover{color:var(--accent);}

/* floating cta */
.float-cta{
  position:fixed;right:20px;bottom:22px;z-index:40;
  background:var(--accent);color:#fff;border-radius:999px;
  padding:13px 24px;font-weight:700;font-size:.9rem;
  box-shadow:0 6px 18px rgba(15,17,18,.18);
  display:inline-flex;align-items:center;gap:8px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background-color .2s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:var(--accent-dark);}

/* reveal */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease;}
.reveal.in{opacity:1;transform:none;}

/* responsive */
@media (min-width:640px){
  .header-top{height:72px;}
  .search-wrap{display:block;}
  .list-item{grid-template-columns:220px 1fr;gap:24px;align-items:start;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .form-grid{grid-template-columns:1fr 1fr;}
  .form-grid .full{grid-column:1 / -1;}
  .cta-block{padding:44px 36px;}
  .page-hero-inner{padding:56px 0 58px;}
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;}
  .section{padding:76px 0;}
}
@media (min-width:1024px){
  .header-top{height:80px;}
  .split{grid-template-columns:3fr 9fr;gap:48px;}
  .side-sticky{position:sticky;top:158px;}
  .card-grid{grid-template-columns:repeat(3,1fr);}
  .cta-block{grid-template-columns:1fr 1fr;gap:48px;align-items:start;padding:56px 48px;}
  .section{padding:96px 0;}
}
@media (max-width:1023px){
  .list-item .thumb{max-width:340px;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .brand-b{font-size:.95rem;}
  .float-cta{right:14px;bottom:14px;padding:12px 18px;}
  .page-hero h1{font-size:2rem;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
    --ink:#0F1112;
    --paper:#F6F3EC;
    --accent:#C25A1E;
    --accent-deep:#A84A16;
    --accent-2:#1E4B3C;
    --line:#E3DED2;
    --muted:#6B6B66;
    --surface:#FFFFFF;
    --hover:#EFEBE1;
    --row-hover:#F1EDE4;
    --radius-card:8px;
    --radius-lg:12px;
    --radius-btn:6px;
    --shadow-1:0 1px 2px rgba(15,17,18,.06);
    --shadow-2:0 8px 24px rgba(15,17,18,.10);
    --font-sans:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
    --maxw:1200px;
    --readw:46rem;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font-sans);
    font-size:16.5px;
    line-height:1.85;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{ max-width:100%; display:block; }
  a{ color:inherit; text-decoration:none; }
  button{ font-family:inherit; }
  input,textarea{ font-family:inherit; }
  ::selection{ background:rgba(194,90,30,.18); }

  h1,h2,h3,h4{ margin:0; font-weight:800; letter-spacing:-0.02em; line-height:1.2; }
  p{ margin:0; }

  .container-x{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 20px; }
  @media (min-width:768px){ .container-x{ padding:0 32px; } }

  .mono{ font-family:var(--font-mono); }

  /* ---------- 顶栏 ---------- */
  .site-header{
    position:sticky; top:0; z-index:50;
    background:rgba(246,243,236,.95);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 2px rgba(15,17,18,.04);
  }
  .header-top-inner{
    display:flex; align-items:center; gap:14px;
    height:64px;
  }
  @media (min-width:1024px){ .header-top-inner{ height:80px; gap:20px; } }

  .brand{
    display:inline-flex; align-items:baseline; gap:4px;
    font-size:19px; font-weight:900; letter-spacing:-0.02em;
    color:var(--ink); white-space:nowrap;
  }
  .brand-a{ color:var(--ink); }
  .brand-dot{ color:var(--accent); font-weight:900; }
  .brand-b{ color:var(--accent); }
  .brand-tag{
    font-family:var(--font-mono); font-size:9.5px; letter-spacing:.18em;
    color:var(--muted); border:1px solid var(--line); border-radius:4px;
    padding:2px 5px; margin-left:8px; transform:translateY(-2px);
  }
  @media (min-width:1024px){ .brand{ font-size:21px; } }

  .search-box{
    display:none;
  }
  @media (min-width:1024px){
    .search-box{
      display:flex; align-items:center; gap:8px;
      flex:1 1 auto; max-width:360px; margin-left:auto;
      background:var(--surface); border:1px solid var(--line);
      border-radius:999px; padding:5px 5px 5px 18px;
      transition:border-color .2s ease, box-shadow .2s ease;
    }
    .search-box:focus-within{
      border-color:var(--accent);
      box-shadow:0 0 0 3px rgba(194,90,30,.13);
    }
  }
  .search-box input{
    flex:1; border:0; outline:none; background:transparent;
    font-size:14px; color:var(--ink); padding:6px 0;
  }
  .search-box input::placeholder{ color:#9B968C; }
  .search-btn{
    border:0; cursor:pointer; width:36px; height:36px; flex:0 0 auto;
    border-radius:999px; background:var(--ink); color:var(--paper);
    display:inline-flex; align-items:center; justify-content:center;
    transition:background .2s ease;
  }
  .search-btn:hover{ background:var(--accent); }

  .header-actions{ display:flex; align-items:center; gap:10px; margin-left:auto; }
  @media (min-width:1024px){ .header-actions{ margin-left:0; } }
  .header-actions .btn-secondary-entry{ display:none; }
  @media (min-width:1024px){ .header-actions .btn-secondary-entry{ display:inline-flex; } }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    font-size:15px; font-weight:600; line-height:1;
    padding:12px 22px; border-radius:var(--radius-btn);
    border:1px solid transparent; cursor:pointer;
    transition:background-color .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  }
  .btn-primary{ background:var(--accent); color:#fff; }
  .btn-primary:hover{ background:var(--accent-deep); transform:translateY(-1px); box-shadow:var(--shadow-2); }
  .btn-primary:active{ transform:translateY(0); }
  .btn-outline{ border-color:var(--ink); color:var(--ink); background:transparent; }
  .btn-outline:hover{ background:var(--hover); }
  .btn-pill{ border-radius:999px; }
  .btn-light{ background:var(--paper); color:var(--ink); }
  .btn-light:hover{ background:#fff; transform:translateY(-1px); }
  .btn-ghost-light{ border-color:rgba(246,243,236,.5); color:var(--paper); background:transparent; }
  .btn-ghost-light:hover{ background:rgba(246,243,236,.12); }
  .btn:focus-visible,
  .tab:focus-visible,
  .filter-pill:focus-visible,
  .faq-q:focus-visible,
  a:focus-visible,
  input:focus-visible,
  textarea:focus-visible{
    outline:2px solid var(--accent); outline-offset:2px;
  }

  .link-underline{ position:relative; display:inline-flex; align-items:center; gap:6px; }
  .link-underline::after{
    content:""; position:absolute; left:0; bottom:-2px; height:1px; width:100%;
    background:currentColor; transform:scaleX(0); transform-origin:left;
    transition:transform .28s ease;
  }
  .link-underline:hover::after{ transform:scaleX(1); }

  /* ---------- 频道 Tabs ---------- */
  .header-nav{ border-top:1px solid var(--line); }
  .tabs-scroll{
    display:flex; gap:8px; overflow-x:auto; padding:10px 0;
    scrollbar-width:none; -ms-overflow-style:none;
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 26px,#000 calc(100% - 26px),transparent 100%);
  }
  .tabs-scroll::-webkit-scrollbar{ display:none; }
  .tab{
    flex:0 0 auto; padding:8px 16px; border-radius:999px;
    border:1px solid var(--line); font-size:15px; color:var(--ink);
    white-space:nowrap; background:transparent;
    transition:background-color .2s ease, color .2s ease, border-color .2s ease;
  }
  .tab:hover{ background:var(--hover); }
  .tab.is-active{ background:var(--ink); border-color:var(--ink); color:var(--paper); font-weight:600; }

  .nav-toggle{
    display:inline-flex; align-items:center; justify-content:center;
    width:42px; height:42px; border-radius:var(--radius-btn);
    border:1px solid var(--line); background:var(--surface); color:var(--ink);
    cursor:pointer;
  }
  @media (min-width:1024px){ .nav-toggle{ display:none; } }

  .drawer{
    position:fixed; inset:0; z-index:60; display:none;
    background:rgba(15,17,18,.45);
  }
  .drawer.is-open{ display:block; }
  .drawer-panel{
    position:absolute; top:0; right:0; bottom:0; width:min(340px,88vw);
    background:var(--paper); padding:24px 22px; overflow-y:auto;
    border-left:1px solid var(--line);
    display:flex; flex-direction:column; gap:18px;
  }
  .drawer-head{ display:flex; align-items:center; justify-content:space-between; }
  .drawer-close{
    border:1px solid var(--line); background:var(--surface); color:var(--ink);
    width:38px; height:38px; border-radius:var(--radius-btn); cursor:pointer;
  }
  .drawer-list{ display:flex; flex-direction:column; gap:8px; }
  .drawer-list a{
    padding:12px 14px; border-radius:var(--radius-btn);
    border:1px solid var(--line); background:var(--surface); font-size:15px;
  }
  .drawer-list a.is-active{ background:var(--ink); color:var(--paper); border-color:var(--ink); }

  /* ---------- 页头 ---------- */
  .page-head{ padding:44px 0 32px; }
  @media (min-width:1024px){ .page-head{ padding:72px 0 44px; } }
  .breadcrumb{
    display:flex; flex-wrap:wrap; align-items:center; gap:8px;
    font-size:13.5px; color:var(--muted); margin-bottom:26px;
  }
  .breadcrumb a:hover{ color:var(--accent); }
  .breadcrumb .sep{ color:#B9B3A6; }
  .breadcrumb .current{ color:var(--ink); font-weight:500; }

  .eyebrow{
    display:flex; align-items:center; gap:12px; margin-bottom:18px;
  }
  .eyebrow-num{
    font-family:var(--font-mono); font-size:13px; letter-spacing:.14em;
    color:var(--accent); font-weight:700;
  }
  .eyebrow-line{ width:48px; height:2px; background:var(--accent); }
  .eyebrow-text{ font-size:13.5px; color:var(--muted); letter-spacing:.04em; }

  .page-title{
    font-size:clamp(2rem,4.6vw,3.4rem);
    line-height:1.12; font-weight:900; letter-spacing:-0.025em;
    margin:0 0 18px;
  }
  .page-lead{
    max-width:var(--readw); font-size:17px; line-height:1.85; color:var(--muted);
  }
  .head-actions{ display:flex; flex-wrap:wrap; gap:12px; margin-top:28px; }
  .tag-row{ display:flex; flex-wrap:wrap; gap:8px; margin-top:26px; }
  .badge{
    display:inline-flex; align-items:center; gap:6px;
    padding:4px 12px; border-radius:999px; font-size:12.5px; letter-spacing:.02em;
    border:1px solid var(--line); background:var(--surface); color:var(--muted);
  }
  .badge-green{ border-color:var(--accent-2); color:var(--accent-2); }
  .badge-accent{ border-color:var(--accent); color:var(--accent); }

  /* ---------- 筛选 ---------- */
  .section{ padding:56px 0; }
  @media (min-width:1024px){ .section{ padding:88px 0; } }
  .section-head{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:28px; }
  .section-title{ font-size:clamp(1.5rem,3vw,2.2rem); }
  .section-sub{ color:var(--muted); font-size:15px; margin-top:10px; max-width:var(--readw); }

  .filter-row{
    display:flex; gap:10px; overflow-x:auto; padding:4px 0 10px;
    scrollbar-width:none; -ms-overflow-style:none; margin-bottom:26px;
  }
  .filter-row::-webkit-scrollbar{ display:none; }
  .filter-pill{
    flex:0 0 auto; padding:9px 18px; border-radius:999px;
    border:1px solid var(--line); background:var(--surface);
    font-size:14.5px; color:var(--muted); cursor:pointer;
    transition:background-color .2s ease, color .2s ease, border-color .2s ease;
  }
  .filter-pill:hover{ background:var(--hover); color:var(--ink); }
  .filter-pill.is-active{ background:var(--ink); border-color:var(--ink); color:var(--paper); font-weight:600; }

  /* ---------- 卡片墙 ---------- */
  .wall-grid{ display:grid; grid-template-columns:repeat(12,1fr); gap:24px; }
  @media (min-width:1024px){ .wall-grid{ gap:32px; } }
  .wall-grid > .card{ grid-column:span 12; }
  @media (min-width:768px){
    .wall-grid > .col-4{ grid-column:span 4; }
    .wall-grid > .col-8{ grid-column:span 8; }
    .wall-grid > .col-5{ grid-column:span 5; }
    .wall-grid > .col-7{ grid-column:span 7; }
  }
  @media (min-width:1024px){
    .wall-grid > .col-5{ grid-column:span 5; }
    .wall-grid > .col-7{ grid-column:span 7; }
  }

  .card{
    background:var(--surface); border:1px solid var(--line);
    border-radius:var(--radius-card); overflow:hidden;
    display:flex; flex-direction:column;
    transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  }
  .card:hover{ transform:translateY(-2px); box-shadow:var(--shadow-2); border-color:#D8D1C1; }
  .card-media{ aspect-ratio:16/10; overflow:hidden; background:var(--line); }
  .card-media img{ width:100%; height:100%; object-fit:cover; transition:transform .35s ease; }
  .card:hover .card-media img{ transform:scale(1.03); }
  .card-body{ padding:22px; display:flex; flex-direction:column; gap:12px; flex:1 1 auto; }
  @media (min-width:1024px){ .card-body{ padding:26px 28px; } }
  .card-title{ font-size:1.2rem; line-height:1.4; }
  .card-desc{ color:var(--muted); font-size:15px; line-height:1.85; }
  .card-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:8px; }
  .card-list li{
    position:relative; padding-left:18px; font-size:14.5px; color:var(--muted); line-height:1.75;
  }
  .card-list li::before{
    content:""; position:absolute; left:0; top:.72em;
    width:8px; height:2px; background:var(--accent);
  }
  .card-foot{
    margin-top:auto; display:flex; align-items:center; justify-content:space-between;
    gap:12px; padding-top:6px;
  }
  .card-link{ color:var(--accent); font-weight:600; font-size:14.5px; }
  .arrow{ font-family:var(--font-mono); }

  .more-row{
    margin-top:34px; padding-top:22px; border-top:1px solid var(--line);
    display:flex; flex-wrap:wrap; align-items:center; gap:16px; justify-content:space-between;
  }
  .more-links{ display:flex; flex-wrap:wrap; gap:20px; }
  .more-links a{ color:var(--accent); font-weight:600; font-size:14.5px; }

  /* ---------- 深色步骤区 ---------- */
  .dark-section{
    background:var(--ink); color:var(--paper);
    border-top:1px solid var(--accent); border-bottom:1px solid var(--accent);
    padding:56px 0;
  }
  @media (min-width:1024px){ .dark-section{ padding:96px 0; } }
  .dark-section .section-sub{ color:rgba(246,243,236,.7); }
  .steps-grid{ display:grid; gap:22px; grid-template-columns:1fr; margin-top:36px; }
  @media (min-width:640px){ .steps-grid{ grid-template-columns:repeat(2,1fr); } }
  @media (min-width:1024px){ .steps-grid{ grid-template-columns:repeat(4,1fr); gap:28px; } }
  .step-item{ padding-top:20px; border-top:2px solid var(--accent); }
  .step-item .num{
    font-family:var(--font-mono); font-size:13px; letter-spacing:.14em;
    color:var(--accent); display:block; margin-bottom:12px;
  }
  .step-item h3{ font-size:1.08rem; color:var(--paper); margin-bottom:8px; }
  .step-item p{ color:rgba(246,243,236,.68); font-size:14.5px; line-height:1.8; }

  /* ---------- 对照表 ---------- */
  .table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius-card); background:var(--surface); }
  table.cmp{ width:100%; border-collapse:collapse; min-width:660px; }
  table.cmp th{
    text-align:left; font-size:13px; font-weight:600; color:var(--muted);
    letter-spacing:.04em; padding:14px 18px; border-bottom:1px solid var(--line);
    background:#FBF9F4; white-space:nowrap;
  }
  table.cmp td{
    padding:18px; border-bottom:1px solid var(--line); font-size:15px;
    line-height:1.8; vertical-align:top; color:var(--ink);
  }
  table.cmp tr:last-child td{ border-bottom:0; }
  table.cmp tbody tr{ transition:background-color .18s ease; }
  table.cmp tbody tr:hover{ background:var(--row-hover); }
  table.cmp td:first-child{ font-weight:600; }
  table.cmp .num{ font-family:var(--font-mono); color:var(--accent-2); font-size:13.5px; }

  /* ---------- FAQ ---------- */
  .faq-wrap{ max-width:760px; }
  .faq-item{ border-bottom:1px solid var(--line); }
  .faq-item:first-child{ border-top:1px solid var(--line); }
  .faq-q{
    width:100%; display:flex; align-items:center; justify-content:space-between;
    gap:18px; padding:20px 0; border:0; background:transparent; cursor:pointer;
    font-size:17px; font-weight:600; color:var(--ink); text-align:left; line-height:1.6;
  }
  .faq-icon{
    font-family:var(--font-mono); font-size:19px; color:var(--accent);
    flex:0 0 auto; transition:transform .22s ease;
  }
  .faq-a{ max-height:0; overflow:hidden; transition:max-height .22s ease; }
  .faq-a-inner{ padding:0 0 22px; color:var(--muted); font-size:15.5px; line-height:1.85; max-width:66ch; }
  .faq-item.is-open .faq-icon{ transform:rotate(180deg); }

  /* ---------- CTA ---------- */
  .cta-section{ background:var(--accent-2); color:var(--paper); padding:60px 0; }
  @media (min-width:1024px){ .cta-section{ padding:100px 0; } }
  .cta-grid{ display:grid; gap:36px; grid-template-columns:1fr; }
  @media (min-width:1024px){ .cta-grid{ grid-template-columns:5fr 6fr; gap:64px; align-items:start; } }
  .cta-title{ font-size:clamp(1.6rem,3vw,2.4rem); color:var(--paper); }
  .cta-text{ color:rgba(246,243,236,.78); font-size:16px; margin-top:16px; max-width:34rem; }
  .cta-points{ list-style:none; margin:26px 0 0; padding:0; display:flex; flex-direction:column; gap:12px; }
  .cta-points li{ display:flex; gap:12px; font-size:15px; color:rgba(246,243,236,.82); }
  .cta-points .num{ font-family:var(--font-mono); color:var(--accent); font-size:13px; padding-top:4px; }

  .form-card{
    background:rgba(15,17,18,.22); border:1px solid rgba(246,243,236,.22);
    border-radius:var(--radius-lg); padding:24px;
  }
  @media (min-width:768px){ .form-card{ padding:32px; } }
  .form-grid{ display:grid; gap:18px; grid-template-columns:1fr; }
  @media (min-width:768px){ .form-grid{ grid-template-columns:1fr 1fr; } .form-grid .full{ grid-column:1 / -1; } }
  .field label{ display:block; font-size:13.5px; color:rgba(246,243,236,.72); margin-bottom:8px; letter-spacing:.02em; }
  .field input,.field textarea{
    width:100%; padding:13px 15px; border-radius:var(--radius-btn);
    border:1px solid rgba(246,243,236,.28); background:rgba(246,243,236,.07);
    color:var(--paper); font-size:15px; outline:none;
    transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
  }
  .field textarea{ min-height:110px; resize:vertical; line-height:1.7; }
  .field input::placeholder,.field textarea::placeholder{ color:rgba(246,243,236,.42); }
  .field input:focus,.field textarea:focus{
    border-color:var(--accent); background:rgba(246,243,236,.1);
    box-shadow:0 0 0 3px rgba(194,90,30,.22);
  }
  .form-note{ font-size:13px; color:rgba(246,243,236,.6); margin-top:6px; }
  .form-msg{
    display:none; margin-top:14px; font-size:14px; color:#F6F3EC;
    border:1px solid rgba(194,90,30,.8); border-radius:var(--radius-btn);
    padding:10px 14px; background:rgba(194,90,30,.18);
  }
  .form-msg.is-visible{ display:block; }

  /* ---------- 页脚 ---------- */
  .site-footer{ background:var(--ink); color:var(--paper); padding:56px 0 0; }
  @media (min-width:1024px){ .site-footer{ padding:72px 0 0; } }
  .footer-grid{ display:grid; gap:32px; grid-template-columns:1fr; }
  @media (min-width:768px){ .footer-grid{ grid-template-columns:repeat(2,1fr); gap:36px; } }
  @media (min-width:1024px){
    .footer-grid{ grid-template-columns:1.7fr 1fr 1fr 1.3fr; gap:40px; }
    .footer-col + .footer-col{ border-left:1px solid rgba(246,243,236,.14); padding-left:32px; }
  }
  .footer-brand .brand{ color:var(--paper); font-size:20px; }
  .footer-brand .brand-a{ color:var(--paper); }
  .footer-brand .brand-tag{ color:rgba(246,243,236,.6); border-color:rgba(246,243,236,.24); }
  .footer-col p{ color:rgba(246,243,236,.66); font-size:14.5px; line-height:1.85; margin-top:16px; max-width:34rem; }
  .footer-col h4{
    font-size:14px; letter-spacing:.06em; color:var(--paper);
    margin-bottom:16px; font-weight:700;
  }
  .footer-links{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px; }
  .footer-links a{ color:rgba(246,243,236,.74); font-size:14.5px; }
  .footer-links a:hover{ color:var(--accent); }
  .footer-note{ color:rgba(246,243,236,.64); font-size:14px; line-height:1.85; margin:0; }
  .footer-bottom{
    margin-top:44px; border-top:1px solid rgba(246,243,236,.14);
    padding:20px 0 26px; display:flex; flex-wrap:wrap; gap:12px;
    align-items:center; justify-content:space-between;
    font-size:13px; color:rgba(246,243,236,.58);
  }
  .footer-bottom a{ color:rgba(246,243,236,.74); }
  .footer-bottom a:hover{ color:var(--accent); }

  /* ---------- 浮动 CTA ---------- */
  .float-cta{
    position:fixed; right:22px; bottom:22px; z-index:40;
    opacity:0; visibility:hidden; transform:translateY(10px);
    transition:opacity .28s ease, transform .28s ease, visibility .28s;
  }
  .float-cta.is-visible{ opacity:1; visibility:visible; transform:none; }
  .float-cta a{
    display:inline-flex; align-items:center; gap:10px;
    background:var(--accent); color:#fff; font-weight:600; font-size:15px;
    padding:14px 24px; border-radius:999px; box-shadow:0 6px 18px rgba(15,17,18,.16);
    transition:background-color .2s ease, transform .2s ease;
  }
  .float-cta a:hover{ background:var(--accent-deep); transform:translateY(-1px); }
  @media (max-width:639px){
    .float-cta{ left:16px; right:16px; bottom:14px; }
    .float-cta a{ width:100%; justify-content:center; }
    body{ padding-bottom:78px; }
  }

  /* ---------- 动效 ---------- */
  .reveal{ opacity:0; transform:translateY(8px); transition:opacity .3s ease, transform .3s ease; }
  .reveal.is-in{ opacity:1; transform:none; }

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

/* roulang page: category3 */
:root{
    --ink:#0F1112;
    --paper:#F6F3EC;
    --accent:#C25A1E;
    --accent-dark:#A84A16;
    --accent-2:#1E4B3C;
    --line:#E3DED2;
    --muted:#6B6B66;
    --surface:#FFFFFF;
    --hover:#EFEBE1;
    --row-hover:#F1EDE4;
    --radius:8px;
    --radius-lg:12px;
    --shadow:0 1px 2px rgba(15,17,18,.06);
    --shadow-lg:0 8px 24px rgba(15,17,18,.10);
    --font-sans:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    --font-mono:ui-monospace,Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body.app{
    margin:0;background:var(--paper);color:var(--ink);
    font-family:var(--font-sans);font-size:16.5px;line-height:1.85;letter-spacing:0;
    -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button,input,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;line-height:1.2}
  p{margin:0}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){.container-x{padding:0 32px}}
  .container-read{width:100%;max-width:760px;margin:0 auto}
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section--tight{padding:44px 0}
  @media (min-width:1024px){.section--tight{padding:64px 0}}
  .section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:34px;max-width:760px}
  .sec-no{font-family:var(--font-mono);font-size:.8125rem;letter-spacing:.18em;color:var(--accent);text-transform:uppercase}
  .section-title{font-size:clamp(1.6rem,3vw,2.5rem);font-weight:800;letter-spacing:-.02em;line-height:1.2}
  .section-lead{color:var(--muted);font-size:1rem;line-height:1.85;max-width:70ch}
  .u-line{display:block;height:1px;background:var(--line)}
  .accent-rule{width:64px;height:2px;background:var(--accent);border-radius:2px}

  /* 按钮 */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:.9375rem;
    padding:12px 22px;border-radius:999px;border:1px solid transparent;cursor:pointer;white-space:nowrap;
    transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease}
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 8px 20px rgba(194,90,30,.26)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);border-radius:6px}
  .btn-ghost:hover{background:var(--hover)}
  .btn-sm{padding:9px 16px;font-size:.875rem}
  .btn-link{color:var(--accent);font-weight:700;display:inline-flex;align-items:center;gap:6px;
    background-image:linear-gradient(var(--accent),var(--accent));background-size:0 1px;background-repeat:no-repeat;
    background-position:0 100%;transition:background-size .25s ease}
  .btn-link:hover{background-size:100% 1px}
  .btn[disabled]{opacity:.45;pointer-events:none;transform:none;box-shadow:none}

  /* 徽章 */
  .badge{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;font-weight:700;letter-spacing:.02em;
    padding:4px 10px;border-radius:999px;border:1px solid var(--accent-2);color:var(--accent-2);background:rgba(30,75,60,.06)}
  .badge-accent{border-color:var(--accent);color:var(--accent);background:rgba(194,90,30,.07)}

  /* 头部 */
  .site-header{position:sticky;top:0;z-index:50}
  .header-top{background:rgba(246,243,236,.93);border-bottom:1px solid var(--line);backdrop-filter:blur(10px);box-shadow:0 1px 2px rgba(15,17,18,.04)}
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
  @media (min-width:1024px){.header-inner{height:80px}}
  .brand{display:inline-flex;align-items:baseline;font-size:1.125rem;font-weight:900;letter-spacing:-.01em}
  .brand-a{color:var(--ink)}
  .brand-dot{color:var(--accent);margin:0 1px}
  .brand-b{color:var(--accent)}
  .brand-tag{font-family:var(--font-mono);font-size:.625rem;letter-spacing:.16em;border:1px solid var(--line);
    border-radius:4px;padding:2px 6px;color:var(--muted);margin-left:8px;align-self:center}
  .search-pill{display:none;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line);
    border-radius:999px;padding:6px 6px 6px 16px;flex:1;max-width:360px;transition:border-color .2s,box-shadow .2s}
  @media (min-width:1024px){.search-pill{display:flex}}
  .search-pill:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.12)}
  .search-pill input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:.9rem;padding:6px 0}
  .search-pill button{width:34px;height:34px;border-radius:999px;border:0;background:var(--ink);color:var(--paper);
    display:grid;place-items:center;cursor:pointer;transition:background-color .2s}
  .search-pill button:hover{background:var(--accent)}
  .header-actions{display:flex;align-items:center;gap:10px}
  .header-actions .btn-ghost{display:none}
  @media (min-width:1100px){.header-actions .btn-ghost{display:inline-flex}}
  .header-actions .btn-primary{display:none}
  @media (min-width:640px){.header-actions .btn-primary{display:inline-flex}}
  .nav-burger{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:42px;height:38px;
    border:1px solid var(--line);border-radius:6px;background:var(--surface);cursor:pointer;padding:0 10px;transition:background-color .2s}
  .nav-burger:hover{background:var(--hover)}
  .nav-burger span{display:block;height:2px;background:var(--ink);border-radius:2px}
  .nav-burger span:nth-child(2){width:68%}
  @media (min-width:1024px){.nav-burger{display:none}}

  .header-nav{background:rgba(246,243,236,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}
  .tabs-scroll{display:flex;gap:10px;overflow-x:auto;padding:10px 0;scrollbar-width:none;-ms-overflow-style:none}
  .tabs-scroll::-webkit-scrollbar{display:none}
  @media (max-width:767px){
    .tabs-scroll{-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 18px),transparent 100%);
      mask-image:linear-gradient(90deg,transparent 0,#000 14px,#000 calc(100% - 18px),transparent 100%)}
  }
  .tab{flex:0 0 auto;padding:8px 18px;border-radius:999px;border:1px solid var(--line);font-size:.9rem;font-weight:600;
    color:var(--ink);background:transparent;transition:background-color .2s,color .2s,border-color .2s;white-space:nowrap}
  .tab:hover{background:var(--hover)}
  .tab.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}

  /* 抽屉 */
  .drawer{position:fixed;inset:0;z-index:70;background:rgba(15,17,18,.45);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease}
  .drawer.is-open{opacity:1;visibility:visible}
  .drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);background:var(--paper);
    padding:22px 20px 32px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
    transform:translateX(100%);transition:transform .28s ease}
  .drawer.is-open .drawer-panel{transform:none}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
  .drawer-close{width:36px;height:36px;border-radius:6px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:1.1rem;line-height:1}
  .drawer-close:hover{background:var(--hover)}
  .drawer-label{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.16em;color:var(--muted);margin:10px 0 4px}
  .drawer-link{padding:12px 14px;border-radius:8px;border:1px solid var(--line);background:var(--surface);
    font-weight:600;font-size:.9375rem;transition:background-color .2s,border-color .2s}
  .drawer-link:hover{background:var(--hover)}
  .drawer-link.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
  .drawer-cta{margin-top:14px;width:100%}

  /* 面包屑 */
  .crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.8125rem;color:rgba(246,243,236,.72)}
  .crumbs a{transition:color .2s}
  .crumbs a:hover{color:var(--accent)}
  .crumbs .sep{opacity:.5}
  .crumbs .current{color:var(--paper);font-weight:500}

  /* Banner */
  .page-banner{position:relative;overflow:hidden;background:var(--ink)}
  .banner-media{position:relative;width:100%;aspect-ratio:21/9;min-height:280px}
  .banner-media img{width:100%;height:100%;object-fit:cover}
  .banner-veil{position:absolute;inset:0;background:linear-gradient(118deg,rgba(15,17,18,.9) 0%,rgba(15,17,18,.7) 44%,rgba(194,90,30,.34) 100%)}
  .banner-overlay{position:absolute;inset:0;display:flex;align-items:center;z-index:2}
  .banner-content{display:flex;flex-direction:column;gap:16px;padding:32px 0;max-width:760px}
  @media (max-width:767px){
    .banner-media{aspect-ratio:auto;height:100%;min-height:420px}
    .banner-content{padding:44px 0}
  }
  .banner-title{font-size:clamp(2.2rem,5.2vw,4.25rem);font-weight:900;letter-spacing:-.02em;line-height:1.05;color:var(--paper)}
  .banner-lead{color:rgba(246,243,236,.84);font-size:1rem;line-height:1.85;max-width:56ch}
  .banner-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px}
  .banner-meta span{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.1em;color:rgba(246,243,236,.78);
    border:1px solid rgba(246,243,236,.28);border-radius:999px;padding:4px 12px}

  /* 概览 */
  .overview{display:grid;gap:40px;align-items:start}
  @media (min-width:1024px){.overview{grid-template-columns:minmax(0,1fr) 380px;gap:56px}}
  .fact{border-bottom:1px solid var(--line);padding:20px 0;display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px}
  .fact:first-of-type{padding-top:0}
  .fact:last-child{border-bottom:0;padding-bottom:0}
  .fact-no{font-family:var(--font-mono);font-size:.8125rem;color:var(--accent);letter-spacing:.1em;padding-top:6px}
  .fact h3{font-size:1.0625rem;font-weight:800;margin-bottom:6px}
  .fact p{color:var(--muted);font-size:.9375rem;line-height:1.8}
  .media-frame{border-radius:8px;overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);transition:box-shadow .25s ease,transform .25s ease}
  .media-frame:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
  .media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
  .media-frame:hover img{transform:scale(1.03)}
  .media-caption{font-size:.8125rem;color:var(--muted);padding:10px 14px;border-top:1px solid var(--line);background:var(--surface)}

  /* 时间轴 */
  .timeline{position:relative;max-width:840px}
  .timeline::before{content:"";position:absolute;left:9px;top:10px;bottom:18px;width:2px;background:rgba(194,90,30,.35)}
  .tl-item{position:relative;padding-left:44px;padding-bottom:34px}
  .tl-item:last-child{padding-bottom:0}
  .tl-dot{position:absolute;left:2px;top:8px;width:16px;height:16px;border-radius:50%;background:var(--paper);
    border:2px solid var(--accent);transition:background-color .2s ease}
  .tl-item:hover .tl-dot{background:var(--accent)}
  .tl-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:8px}
  .tl-no{font-family:var(--font-mono);font-size:.8125rem;color:var(--accent);letter-spacing:.1em}
  .tl-head h3{font-size:1.125rem;font-weight:800}
  .tl-body p{color:var(--muted);font-size:.9688rem;line-height:1.85;max-width:68ch}

  /* 提示对照 */
  .msg-list{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface)}
  .msg-head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:20px;padding:14px 22px;background:rgba(30,75,60,.06);border-bottom:1px solid var(--line)}
  .msg-head span{font-size:.8125rem;font-weight:700;letter-spacing:.06em;color:var(--accent-2)}
  .msg-row{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:20px;padding:18px 22px;
    border-bottom:1px solid var(--line);min-height:56px;align-items:center;transition:background-color .18s ease}
  .msg-row:last-child{border-bottom:0}
  .msg-row:hover{background:var(--row-hover)}
  .msg-code{font-family:var(--font-mono);font-size:.9rem;font-weight:600;color:var(--ink);
    border-left:2px solid var(--accent);padding-left:10px;line-height:1.6}
  .msg-todo{color:var(--muted);font-size:.9375rem;line-height:1.75}
  @media (max-width:767px){
    .msg-head{display:none}
    .msg-row{grid-template-columns:1fr;gap:8px;padding:16px 18px;align-items:start}
  }

  /* 深色区 */
  .dark-block{background:var(--ink);color:var(--paper);border-top:1px solid var(--accent);border-bottom:1px solid var(--accent);padding:60px 0}
  @media (min-width:1024px){.dark-block{padding:96px 0}}
  .dark-block .section-title{color:var(--paper)}
  .dark-block .section-lead{color:rgba(246,243,236,.72)}
  .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:38px}
  @media (min-width:900px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:32px}}
  .stat{border-top:1px solid rgba(246,243,236,.18);padding-top:20px}
  .stat-num{font-family:var(--font-mono);font-size:clamp(2.1rem,4vw,3rem);line-height:1;color:var(--accent);font-weight:700;letter-spacing:-.02em}
  .stat-unit{font-family:var(--font-sans);font-size:.875rem;color:rgba(246,243,236,.7);margin-left:8px;font-weight:500}
  .stat p{margin-top:12px;color:rgba(246,243,236,.72);font-size:.9rem;line-height:1.75}

  /* 卡片链接 */
  .more-grid{display:grid;grid-template-columns:1fr;gap:18px}
  @media (min-width:768px){.more-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .more-card{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);
    border-radius:8px;padding:24px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
  .more-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:rgba(194,90,30,.4)}
  .more-no{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.16em;color:var(--accent)}
  .more-card h3{font-size:1.0625rem;font-weight:800}
  .more-card p{color:var(--muted);font-size:.9rem;line-height:1.75;flex:1}
  .more-go{font-size:.875rem;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:6px}
  .more-card:hover .more-go i{transform:translateX(3px)}
  .more-go i{transition:transform .22s ease}

  /* FAQ */
  .faq{max-width:760px;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 2px;
    background:none;border:0;text-align:left;font-size:1.0625rem;font-weight:800;color:var(--ink);cursor:pointer;transition:color .18s ease}
  .faq-q:hover{color:var(--accent)}
  .faq-sign{font-family:var(--font-mono);font-size:1.25rem;line-height:1;color:var(--accent);flex:0 0 auto}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
  .faq-a-inner{padding:0 2px 22px;color:var(--muted);font-size:.9688rem;line-height:1.85;max-width:68ch}

  /* CTA */
  .cta-block{background:var(--accent-2);color:var(--paper)}
  .cta-grid{display:grid;gap:36px;padding:60px 0}
  @media (min-width:1024px){.cta-grid{grid-template-columns:minmax(0,1fr) 460px;gap:64px;padding:88px 0;align-items:start}}
  .cta-title{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;letter-spacing:-.02em;line-height:1.25}
  .cta-lead{margin-top:16px;color:rgba(246,243,236,.8);font-size:1rem;line-height:1.85;max-width:48ch}
  .cta-points{margin-top:24px;display:flex;flex-direction:column;gap:10px}
  .cta-points li{display:flex;gap:10px;font-size:.9375rem;color:rgba(246,243,236,.86)}
  .cta-points i{color:var(--accent);margin-top:6px;font-size:.8rem}
  .form-card{background:var(--paper);border-radius:12px;padding:26px;box-shadow:0 14px 34px rgba(0,0,0,.2)}
  .form-card h3{font-size:1.125rem;font-weight:800;color:var(--ink)}
  .form-card p.form-note{margin-top:6px;color:var(--muted);font-size:.875rem;line-height:1.7}
  .field{display:flex;flex-direction:column;gap:8px;margin-top:16px}
  .field label{font-size:.875rem;font-weight:700;color:var(--ink)}
  .field input,.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:6px;
    background:#fff;font-size:.9375rem;line-height:1.6;outline:none;transition:border-color .2s ease,box-shadow .2s ease}
  .field textarea{resize:vertical;min-height:96px}
  .field input:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.14)}
  .form-submit{margin-top:20px;width:100%}

  /* 页脚 */
  .site-footer{background:var(--ink);color:var(--paper)}
  .footer-grid{display:grid;grid-template-columns:1fr;padding-top:8px}
  @media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
  .footer-col{padding:26px 0;border-top:1px solid rgba(246,243,236,.12)}
  @media (min-width:768px){
    .footer-col{padding:48px 28px;border-top:0;border-left:1px solid rgba(246,243,236,.12)}
    .footer-col:first-child{border-left:0;padding-left:0}
    .footer-col:last-child{padding-right:0}
  }
  .site-footer .brand-a{color:var(--paper)}
  .site-footer .brand-tag{border-color:rgba(246,243,236,.25);color:rgba(246,243,236,.6)}
  .footer-brand p{margin-top:14px;color:rgba(246,243,236,.72);font-size:.9375rem;line-height:1.8;max-width:36ch}
  .footer-col h4{font-size:.9375rem;font-weight:800;margin-bottom:14px;letter-spacing:.02em}
  .footer-links li{margin-bottom:10px}
  .footer-links a{color:rgba(246,243,236,.78);font-size:.9375rem;
    background-image:linear-gradient(var(--accent),var(--accent));background-size:0 1px;background-repeat:no-repeat;
    background-position:0 100%;transition:color .22s ease,background-size .25s ease}
  .footer-links a:hover{color:var(--accent);background-size:100% 1px}
  .footer-note{color:rgba(246,243,236,.72);font-size:.9rem;line-height:1.8;max-width:34ch}
  .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
    border-top:1px solid rgba(246,243,236,.12);padding:20px 0 30px;font-size:.8125rem;color:rgba(246,243,236,.6)}
  .footer-bottom a{transition:color .2s}
  .footer-bottom a:hover{color:var(--accent)}

  /* 浮动 CTA */
  .float-cta{position:fixed;right:24px;bottom:24px;z-index:30;opacity:0;transform:translateY(10px);
    pointer-events:none;box-shadow:0 10px 24px rgba(194,90,30,.28);transition:opacity .26s ease,transform .26s ease}
  .float-cta.is-on{opacity:1;transform:none;pointer-events:auto}
  @media (max-width:767px){
    .float-cta{left:0;right:0;bottom:0;border-radius:0;padding:15px 20px;justify-content:center;box-shadow:0 -6px 18px rgba(15,17,18,.14)}
    body.app{padding-bottom:66px}
  }

  /* 动效 */
  .reveal{opacity:0;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease}
  .reveal.is-in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none;transition:none}
    .btn,.more-card,.media-frame,.media-frame img,.float-cta{transition:none}
    .more-card:hover,.media-frame:hover{transform:none}
  }

/* roulang page: category4 */
:root{
  --ink:#0F1112;
  --paper:#F6F3EC;
  --paper-2:#EFEBE1;
  --paper-3:#F1EDE4;
  --accent:#C25A1E;
  --accent-dark:#A84A16;
  --accent-2:#1E4B3C;
  --line:#E3DED2;
  --muted:#6B6B66;
  --card:#FFFFFF;
  --radius:8px;
  --radius-lg:12px;
  --shadow:0 1px 2px rgba(15,17,18,.06);
  --shadow-hover:0 8px 24px rgba(15,17,18,.10);
  --font-cn:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
.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}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container-x{padding:0 32px}}
.read-wrap{max-width:760px}
.text-wrap{max-width:46rem}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(246,243,236,.95);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  box-shadow:0 1px 2px rgba(15,17,18,.04);
}
.header-inner{display:flex;align-items:center;gap:16px;height:64px}
@media(min-width:1024px){.header-inner{height:78px;gap:24px}}
.brand{display:inline-flex;align-items:center;gap:1px;font-size:19px;font-weight:900;letter-spacing:-.02em;white-space:nowrap;line-height:1}
.brand-a{color:var(--ink)}
.brand-dot{color:var(--accent);margin:0 2px}
.brand-b{color:var(--accent)}
.brand-tag{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;color:var(--muted);
  border:1px solid var(--line);border-radius:999px;padding:3px 7px;margin-left:9px;
}
.search-box{position:relative;display:none;flex:1;max-width:340px;margin:0 auto}
@media(min-width:1024px){.search-box{display:block}}
.search-input{
  width:100%;height:42px;border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:0 46px 0 18px;font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease;
}
.search-input::placeholder{color:#9C9C95}
.search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.12)}
.search-btn{
  position:absolute;right:5px;top:5px;width:32px;height:32px;border:0;border-radius:999px;
  background:transparent;color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background-color .2s ease,color .2s ease;
}
.search-btn:hover{background:var(--paper-2);color:var(--accent)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.hamburger{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.hamburger:hover{background:var(--paper-2);border-color:var(--accent)}
@media(min-width:1024px){.hamburger{display:none}}
@media(max-width:1023px){.hide-sm{display:none}}

.header-nav{border-top:1px solid var(--line)}
.tabs-scroll{
  display:flex;gap:8px;overflow-x:auto;padding:10px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.tabs-scroll::-webkit-scrollbar{display:none}
.tab{
  flex:0 0 auto;padding:8px 16px;border-radius:999px;border:1px solid var(--line);
  font-size:14px;line-height:1.2;color:var(--muted);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tab:hover{background:var(--paper-2);color:var(--ink)}
.tab.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
@media(max-width:1023px){
  .tabs-scroll{
    -webkit-mask-image:linear-gradient(to right,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
    mask-image:linear-gradient(to right,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
  }
}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:60;background:rgba(15,17,18,.48);opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease}
.drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(86vw,340px);background:var(--paper);
  padding:22px 20px 32px;transform:translateX(100%);transition:transform .26s ease;overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:38px;height:38px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}
.drawer-title{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--muted);margin:22px 0 10px}
.drawer-link{display:block;padding:12px 14px;border-radius:8px;font-size:15px;font-weight:600;border:1px solid transparent}
.drawer-link:hover{background:var(--paper-2)}
.drawer-link.is-active{background:var(--ink);color:var(--paper)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:15px;line-height:1;cursor:pointer;white-space:nowrap;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--accent);color:#fff;border-radius:999px;padding:14px 26px;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--ink);border:1px solid var(--ink);border-radius:6px;padding:13px 24px}
.btn-outline:hover{background:var(--paper-2);transform:translateY(-1px)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font-size:12.5px;letter-spacing:.02em;line-height:1.6;
  border:1px solid var(--accent-2);color:var(--accent-2);background:rgba(30,75,60,.06);
}
.badge-soft{border-color:var(--line);color:var(--muted);background:#fff}

/* ---------- typography ---------- */
.h1{font-size:clamp(2.2rem,5.2vw,3.5rem);line-height:1.06;font-weight:900;letter-spacing:-.02em;margin:0}
.h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.2;font-weight:800;letter-spacing:-.02em;margin:0}
.h3{font-size:1.125rem;line-height:1.4;font-weight:800;letter-spacing:-.01em;margin:0}
.lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:46rem;margin:0}
.muted{color:var(--muted)}
.num{font-family:var(--font-mono);letter-spacing:.04em}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);
  font-size:12px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;
}
.eyebrow-light{color:#D98450}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-tight{padding:44px 0}
@media(min-width:1024px){.section-tight{padding:64px 0}}
.sec-head{margin-bottom:28px}
@media(min-width:1024px){.sec-head{margin-bottom:44px}}
.hr{height:1px;background:var(--line);border:0;margin:0}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumb a{transition:color .2s ease}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:#C9C3B6}
.crumb .current{color:var(--ink)}

/* ---------- hero ---------- */
.page-hero{padding:40px 0 44px;border-bottom:1px solid var(--line)}
@media(min-width:1024px){.page-hero{padding:76px 0 80px}}
.hero-grid{display:grid;gap:34px}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center}}
.hero-title-block{display:flex;flex-direction:column;gap:18px}
.hero-kicker{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.hero-stats{display:flex;flex-wrap:wrap;gap:24px;margin-top:14px;padding-top:22px;border-top:1px solid var(--line)}
.hero-stat{display:flex;flex-direction:column;gap:2px;min-width:120px}
.hero-stat .k{font-size:12.5px;color:var(--muted)}
.hero-stat .v{font-family:var(--font-mono);font-size:13px;color:var(--ink);letter-spacing:.06em}
.hero-stat .v em{font-style:normal;color:var(--accent)}
.hero-media{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(135deg,rgba(194,90,30,.18),rgba(15,17,18,.04) 60%,rgba(15,17,18,0));
}
.hero-media-cap{
  position:absolute;left:16px;bottom:16px;z-index:2;
  background:rgba(246,243,236,.94);border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;font-size:12.5px;color:var(--ink);
}

/* ---------- cards ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.card-accent{border-left:3px solid var(--accent)}
.card-green{border-left:3px solid var(--accent-2)}
.card p{font-size:14.8px;line-height:1.85;color:var(--muted);margin-top:10px}
.card .card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-index{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--accent)}

/* ---------- compare layout ---------- */
.compare-grid{display:grid;gap:28px}
@media(min-width:1024px){.compare-grid{grid-template-columns:7fr 5fr;gap:40px;align-items:start}}
.spec-wrap{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th{
  text-align:left;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--muted);
  background:var(--paper-3);padding:13px 16px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.spec-table td{
  padding:15px 16px;font-size:14.5px;line-height:1.7;color:var(--muted);
  border-bottom:1px solid var(--line);vertical-align:top;
}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:var(--paper-3)}
.spec-table td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.spec-note{font-size:13px;color:var(--muted);margin-top:12px;display:flex;gap:8px;align-items:flex-start}
.spec-note i{color:var(--accent);margin-top:5px}
.stack{display:flex;flex-direction:column;gap:18px}

/* ---------- dark block ---------- */
.dark-block{
  background:var(--ink);color:var(--paper);
  border-top:1px solid var(--accent);border-bottom:1px solid var(--accent);
  padding:56px 0;
}
@media(min-width:1024px){.dark-block{padding:96px 0}}
.dark-block .lead{color:#B7B2A6}
.dark-block .h2{color:#fff}
.stat-row{
  display:grid;gap:24px;margin:34px 0 40px;padding:26px 0;
  border-top:1px solid #2B3031;border-bottom:1px solid #2B3031;
}
@media(min-width:768px){.stat-row{grid-template-columns:repeat(3,1fr)}}
.stat{display:flex;flex-direction:column;gap:6px}
.stat-num{font-family:var(--font-mono);font-size:clamp(2rem,4.2vw,2.8rem);font-weight:600;line-height:1;color:#fff;letter-spacing:.02em}
.stat-num .unit{font-size:.85rem;color:var(--accent);margin-left:6px;letter-spacing:.06em}
.stat-label{font-size:13.5px;color:#9E9A90}
.dark-grid{display:grid;gap:24px}
@media(min-width:1024px){.dark-grid{grid-template-columns:6fr 6fr;gap:40px;align-items:start}}
.dark-figure{border:1px solid #2B3031;border-radius:var(--radius);overflow:hidden;background:#141718}
.dark-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.dark-figure figcaption{font-size:13px;color:#9E9A90;padding:12px 16px;border-top:1px solid #2B3031}
.dark-note{
  border:1px solid #2B3031;border-radius:var(--radius);padding:20px;background:#141718;
  transition:border-color .24s ease,transform .24s ease;
}
.dark-note:hover{border-color:var(--accent);transform:translateY(-2px)}
.dark-note h3{color:#fff}
.dark-note p{font-size:14.5px;color:#9E9A90;line-height:1.85;margin-top:10px}

/* ---------- flow ---------- */
.flow{position:relative;padding-left:30px;margin-top:8px}
.flow::before{content:"";position:absolute;left:7px;top:10px;bottom:14px;width:2px;background:var(--accent);opacity:.85}
.flow-item{position:relative;padding-bottom:30px}
.flow-item:last-child{padding-bottom:0}
.flow-dot{position:absolute;left:-30px;top:8px;width:16px;height:16px;border-radius:999px;background:var(--paper);border:2px solid var(--accent)}
.flow-num{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--accent);display:block;margin-bottom:6px}
.flow-item p{font-size:14.8px;line-height:1.85;color:var(--muted);margin-top:8px}
.flow-side{display:grid;gap:20px}
@media(min-width:1024px){.flow-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.side-card ul li{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;line-height:1.8;color:var(--muted);
  padding:11px 0;border-bottom:1px solid var(--line);
}
.side-card ul li:last-child{border-bottom:0;padding-bottom:0}
.side-card ul li i{color:var(--accent-2);margin-top:5px}

/* ---------- more links ---------- */
.more-links{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow);
}
@media(min-width:1024px){.more-links{padding:32px 36px}}
.more-list{display:grid;gap:12px;margin-top:18px}
@media(min-width:768px){.more-list{grid-template-columns:repeat(3,1fr)}}
.more-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  border:1px solid var(--line);border-radius:var(--radius);padding:15px 18px;background:var(--paper);
  font-size:15px;font-weight:600;transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.more-item:hover{border-color:var(--accent);background:#fff;transform:translateY(-2px)}
.more-item i{color:var(--accent);font-size:13px}
.more-back{margin-top:18px;font-size:14px}
.more-back a{color:var(--accent);border-bottom:1px solid transparent;transition:border-color .2s ease}
.more-back a:hover{border-color:var(--accent)}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line);max-width:760px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:700;line-height:1.55;transition:color .2s ease;
}
.faq-q:hover{color:var(--accent)}
.faq-icon{font-family:var(--font-mono);font-size:20px;line-height:1;color:var(--accent);flex:0 0 auto}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a-inner{padding:0 0 24px;font-size:15.4px;line-height:1.85;color:var(--muted)}
.faq-item.is-open .faq-a{max-height:460px}

/* ---------- CTA ---------- */
.cta-section{
  background:var(--ink);color:var(--paper);padding:60px 0;
  border-top:1px solid var(--accent);
}
@media(min-width:1024px){.cta-section{padding:96px 0}}
.cta-grid{display:grid;gap:34px}
@media(min-width:1024px){.cta-grid{grid-template-columns:1fr 1fr;gap:64px;align-items:start}}
.cta-section .h2{color:#fff}
.cta-points{display:grid;gap:12px;margin-top:26px}
.cta-points li{display:flex;gap:10px;align-items:flex-start;font-size:14.8px;color:#B7B2A6;line-height:1.8}
.cta-points li i{color:var(--accent);margin-top:6px}
.form-grid{display:grid;gap:16px}
.field-label{display:block;font-size:13px;color:#9E9A90;margin-bottom:8px;letter-spacing:.02em}
.field-input,.field-area{
  width:100%;background:#191C1D;border:1px solid #33383A;border-radius:6px;
  padding:13px 15px;color:var(--paper);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field-area{min-height:120px;resize:vertical;line-height:1.8}
.field-input::placeholder,.field-area::placeholder{color:#75736F}
.field-input:focus,.field-area:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,90,30,.18)}
.form-hint{font-size:12.5px;color:#8C8880;line-height:1.7}
.form-actions{margin-top:4px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:56px 0 0}
.footer-grid{display:grid;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:40px}}
.footer-col h4{font-size:13.5px;font-weight:700;letter-spacing:.08em;color:#fff;margin:0 0 16px}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14.5px;color:#C9C4B8;transition:color .2s ease}
.footer-links a:hover{color:var(--accent)}
.footer-note{font-size:14px;color:#9E9A90;line-height:1.85;margin:0;max-width:36ch}
.footer-brand .brand-a{color:#fff}
.footer-brand .brand-b{color:var(--accent)}
.footer-brand .brand-tag{color:#8C8880;border-color:#33383A}
.footer-brand p{margin:16px 0 0;font-size:14px;color:#9E9A90;line-height:1.85;max-width:34ch}
.footer-bottom{
  margin-top:40px;border-top:1px solid #2A2E2F;padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:#8C8880;
}
.footer-bottom a{font-family:var(--font-mono);letter-spacing:.06em;transition:color .2s ease}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- floating CTA ---------- */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:40;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 22px;border-radius:999px;background:var(--accent);color:#fff;
  font-size:15px;font-weight:600;line-height:1;
  box-shadow:0 8px 24px rgba(194,90,30,.28);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s ease,transform .28s ease,visibility .28s ease,background-color .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{background:var(--accent-dark)}
@media(max-width:640px){
  .float-cta{left:16px;right:16px;bottom:12px;justify-content:center;border-radius:12px;padding:15px 18px}
  .site-footer{padding-bottom:82px}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .32s ease,transform .32s ease}
.reveal.is-in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important;transition-duration:.01ms!important}
}

/* ---------- responsive table ---------- */
@media(max-width:640px){
  body{font-size:16px}
  .header-actions .btn-primary{padding:9px 14px;font-size:13px}
  .brand{font-size:17px}
  .brand-tag{display:none}
  .spec-table thead{display:none}
  .spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%}
  .spec-table tr{border-bottom:1px solid var(--line);padding:12px 16px}
  .spec-table tr:last-child{border-bottom:0}
  .spec-table td{border:0;padding:4px 0;font-size:14.5px}
  .spec-table td:first-child{font-size:15.5px;margin-bottom:4px}
  .spec-table td::before{
    content:attr(data-label);display:block;
    font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:#9C9C95;margin-bottom:2px;
  }
  .hero-media-cap{left:12px;bottom:12px;font-size:11.5px}
  .hero-stats{gap:18px}
  .hero-stat{min-width:104px}
}