/* roulang page: index */
:root{
    --pine:#1F3A38; --pine-600:#2F5A55; --pine-400:#4A7C74;
    --copper:#C2703F; --copper-light:#D89B6E;
    --bg:#F7F5F1; --white:#FFFFFF; --sand:#EFEBE4;
    --ink:#141B1A; --muted:#5A6360; --faint:#8C918D; --line:#E2DCD3;
    --ok:#3F7D5A; --warn:#B4452F;
    --r-card:14px; --r-img:12px; --r-input:10px; --r-pill:999px;
    --sh-1:0 1px 2px rgba(20,27,26,.04);
    --sh-2:0 12px 32px -12px rgba(20,27,26,.10);
    --sh-3:0 18px 40px -16px rgba(20,27,26,.16);
    --ease:cubic-bezier(.22,1,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  }
  body.no-scroll{overflow:hidden}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
  ul,ol{list-style:none}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%;height:auto}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  input,textarea{font:inherit}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  .section{padding:96px 0}
  .section-sand{background:var(--sand)}
  .section-head{max-width:720px}
  .eyebrow{
    display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;
    color:var(--copper);text-transform:uppercase;margin-bottom:16px;
  }
  h1{font-size:clamp(32px,5vw,58px);font-weight:800;line-height:1.16;letter-spacing:-.02em}
  h2{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.015em}
  h3{font-size:20px;font-weight:650;line-height:1.45}
  .section-sub{color:var(--muted);margin-top:16px;font-size:16.5px;line-height:1.8;max-width:62ch}

  /* ---------- 悬浮胶囊导航 ---------- */
  .site-header{position:fixed;top:14px;left:0;right:0;z-index:60;padding:0 20px}
  .nav-shell{
    position:relative;max-width:1180px;margin:0 auto;
    display:flex;align-items:center;gap:16px;
    padding:10px 12px 10px 20px;border-radius:var(--r-pill);
    background:rgba(255,255,255,.72);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border:1px solid rgba(226,220,211,.85);
    box-shadow:var(--sh-1);
    transition:background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
  }
  .site-header.is-scrolled .nav-shell{
    background:rgba(255,255,255,.95);border-color:var(--line);
    box-shadow:0 10px 30px -18px rgba(20,27,26,.42);
  }
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
  .brand-mark{
    position:relative;width:22px;height:22px;border-radius:7px;flex:none;
    background:linear-gradient(135deg,var(--pine) 0%,var(--pine-400) 58%,var(--copper) 100%);
  }
  .brand-mark::after{content:"";position:absolute;inset:7px;border-radius:2px;background:var(--bg);opacity:.92}
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-link{
    display:inline-flex;align-items:center;padding:8px 12px;border-radius:var(--r-pill);
    font-size:14.5px;color:var(--muted);
    transition:color .2s var(--ease),background-color .2s var(--ease);
  }
  .nav-link:hover{color:var(--pine);background:rgba(31,58,56,.06)}
  .nav-link.is-active{color:var(--pine);background:rgba(31,58,56,.10);font-weight:600}
  .nav-link:focus-visible{outline:2px solid var(--pine);outline-offset:2px}
  .nav-toggle{
    display:none;width:44px;height:44px;flex-direction:column;align-items:center;justify-content:center;gap:5px;
    border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;flex:none;
  }
  .nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--pine);transition:transform .24s var(--ease)}
  .nav-toggle.is-open span:first-child{transform:translateY(3.5px) rotate(45deg)}
  .nav-toggle.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-pill);font-size:15px;font-weight:600;padding:13px 26px;
    border:1px solid transparent;white-space:nowrap;
    transition:transform .2s var(--ease),background-color .2s var(--ease),
               box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .btn:focus-visible{outline:2px solid var(--pine);outline-offset:2px}
  .btn-primary{background:var(--copper);color:#fff;box-shadow:0 10px 24px -16px rgba(194,112,63,.9)}
  .btn-primary:hover{background:#A85E33;transform:translateY(-1px);box-shadow:0 16px 32px -18px rgba(194,112,63,.95)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:#fff;color:var(--pine);border-color:var(--line)}
  .btn-ghost:hover{border-color:var(--pine-400);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(0)}
  .btn-light{background:#fff;color:var(--pine)}
  .btn-light:hover{transform:translateY(-1px);box-shadow:0 18px 36px -20px rgba(0,0,0,.55)}
  .btn-sm{padding:9px 18px;font-size:14px}
  .link-arrow{display:inline-flex;align-items:center;gap:7px;font-size:15px;font-weight:600;color:var(--copper)}
  .link-arrow::after{content:"→";transition:transform .2s var(--ease)}
  .link-arrow:hover::after{transform:translateX(4px)}

  /* ---------- Hero ---------- */
  .hero{padding:148px 0 88px;background:linear-gradient(180deg,#F7F5F1 0%,#EFEBE4 100%)}
  .hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
  .hero-sub{margin-top:22px;font-size:17.5px;line-height:1.85;color:var(--muted);max-width:48ch}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
  .hero-tags li{
    font-size:13.5px;color:var(--pine-600);background:rgba(255,255,255,.85);
    border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 15px;
  }
  .hero-media{position:relative}
  .hero-media img{
    width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
    border:1px solid rgba(31,58,56,.14);box-shadow:var(--sh-2);
  }
  .hero-float{
    position:absolute;left:-18px;bottom:-22px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);padding:14px 20px;box-shadow:var(--sh-2);min-width:186px;
  }
  .hero-float-num{font-size:26px;font-weight:700;color:var(--pine);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
  .hero-float-unit{font-size:16px;font-weight:700;color:var(--pine)}
  .hero-float-label{display:block;font-size:12.5px;color:var(--faint);margin-top:2px}

  /* ---------- 痛点提问 ---------- */
  .pain-list{margin-top:44px;border-top:1px solid var(--line)}
  .pain-list li{display:grid;grid-template-columns:68px 1fr;gap:20px;padding:26px 0;border-bottom:1px solid var(--line)}
  .pain-num{font-size:14px;font-weight:700;color:var(--copper);letter-spacing:.08em;font-variant-numeric:tabular-nums;padding-top:3px}
  .pain-q{font-size:19px;font-weight:650;line-height:1.5}
  .pain-desc{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.78;max-width:70ch}

  /* ---------- 方案卡片 ---------- */
  .solution-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;margin-top:48px}
  .sol-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
    transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
  }
  .sol-card:hover{border-color:var(--pine-400);transform:translateY(-4px);box-shadow:var(--sh-3)}
  .sol-card:focus-within{border-color:var(--pine-400)}
  .sol-card-lg{grid-row:span 2;display:flex;flex-direction:column;gap:22px;padding:28px}
  .sol-card-lg img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img)}
  .sol-card h3{margin-bottom:10px}
  .sol-card p{font-size:15px;color:var(--muted);line-height:1.8}
  .sol-col{display:grid;gap:24px;align-content:start}
  .sol-mini{font-size:13px;font-weight:600;color:var(--copper);letter-spacing:.06em;margin-bottom:12px;display:inline-block}
  .sol-list{margin-top:16px;display:grid;gap:9px}
  .sol-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted)}
  .sol-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--copper-light)}

  /* ---------- 接入步骤 ---------- */
  .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:52px}
  .tl-item{position:relative;padding-top:40px}
  .tl-item::before{content:"";position:absolute;top:9px;left:0;right:-28px;height:1px;background:var(--line)}
  .tl-item:last-child::before{right:0}
  .tl-dot{
    position:absolute;top:0;left:0;width:19px;height:19px;border-radius:50%;
    background:#fff;border:2px solid var(--copper);
    display:flex;align-items:center;justify-content:center;
  }
  .tl-dot::after{content:"";width:5px;height:5px;border-radius:50%;background:var(--copper)}
  .tl-step{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--faint);margin-bottom:8px}
  .tl-item h3{font-size:18px;margin-bottom:9px}
  .tl-item p{font-size:14.8px;color:var(--muted);line-height:1.78}

  /* ---------- 成功数据 ---------- */
  .stats-band{
    position:relative;padding:88px 0;color:#fff;
    background:var(--pine) url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  }
  .stats-band::before{content:"";position:absolute;inset:0;background:rgba(20,42,40,.87)}
  .stats-band .container{position:relative;z-index:1}
  .stats-head{font-size:15px;color:rgba(255,255,255,.72);letter-spacing:.06em;margin-bottom:40px}
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
  .stat{padding:0 28px;border-left:1px solid rgba(255,255,255,.16)}
  .stat:first-child{border-left:0;padding-left:0}
  .stat-value{display:flex;align-items:baseline;gap:6px}
  .stat-num{
    font-size:clamp(30px,3.4vw,44px);font-weight:700;color:var(--copper-light);
    font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.1;
  }
  .stat-unit{font-size:14.5px;color:rgba(255,255,255,.78)}
  .stat-label{margin-top:12px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.6}

  /* ---------- 最新信息 ---------- */
  .news-grid{display:grid;grid-template-columns:.85fr 1.6fr;gap:56px;align-items:start}
  .news-aside p{color:var(--muted);font-size:15.5px;line-height:1.8;margin-top:16px;max-width:34ch}
  .news-aside .link-arrow{margin-top:22px}
  .news-list{border-top:1px solid var(--line)}
  .news-item{
    display:grid;grid-template-columns:132px 1fr;gap:20px;padding:22px 0;
    border-bottom:1px solid var(--line);transition:transform .22s var(--ease);
  }
  .news-item:hover{transform:translateX(4px)}
  .news-item:hover .news-title{color:var(--copper)}
  .news-thumb{width:132px;height:88px;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
  .news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
  .badge{
    display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;
    color:var(--pine-600);background:rgba(31,58,56,.08);border-radius:var(--r-pill);padding:4px 11px;
  }
  .news-date{font-size:12.5px;color:var(--faint);font-variant-numeric:tabular-nums}
  .news-title{font-size:17.5px;font-weight:650;line-height:1.5;transition:color .2s var(--ease)}
  .news-sum{
    margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.7;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-empty{
    border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center;
    color:var(--muted);font-size:15px;background:rgba(255,255,255,.6);
  }
  .news-empty span{display:block;font-size:26px;color:var(--faint);margin-bottom:10px;line-height:1}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;grid-template-columns:.85fr 1.5fr;gap:56px;align-items:start}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:20px 0 20px 16px;text-align:left;font-size:17.5px;font-weight:650;line-height:1.55;
    transition:color .2s var(--ease);
  }
  .faq-q::before{
    content:"";position:absolute;left:0;top:22px;bottom:22px;width:2px;border-radius:2px;
    background:var(--copper);transform:scaleY(0);transform-origin:top;transition:transform .26s var(--ease);
  }
  .faq-item.open .faq-q::before{transform:scaleY(1)}
  .faq-q:hover{color:var(--copper)}
  .faq-q:focus-visible{outline:2px solid var(--pine);outline-offset:2px;border-radius:6px}
  .faq-icon{position:relative;width:14px;height:14px;flex:none}
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--pine-400);border-radius:2px;transition:transform .26s var(--ease),background-color .2s var(--ease)}
  .faq-icon::before{left:0;top:6px;width:14px;height:2px}
  .faq-icon::after{left:6px;top:0;width:2px;height:14px}
  .faq-item.open .faq-icon::after{transform:scaleY(0)}
  .faq-item.open .faq-icon::before{background:var(--copper)}
  .faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
  .faq-item.open .faq-a{grid-template-rows:1fr}
  .faq-a > div{overflow:hidden}
  .faq-a p{padding:0 16px 22px;color:var(--muted);font-size:15.5px;line-height:1.82;max-width:66ch}

  /* ---------- CTA ---------- */
  .cta-band{padding:0 0 96px}
  .cta-inner{
    display:grid;grid-template-columns:1.5fr .8fr;gap:44px;align-items:center;
    padding:56px;border-radius:20px;color:#fff;
    background:linear-gradient(120deg,#1F3A38 0%,#2F5A55 100%);
    box-shadow:0 30px 60px -34px rgba(20,27,26,.6);
  }
  .cta-inner h2{color:#fff}
  .cta-inner p{margin-top:16px;color:rgba(255,255,255,.78);font-size:16px;line-height:1.8;max-width:52ch}
  .cta-points{margin-top:24px;display:grid;gap:10px}
  .cta-points li{position:relative;padding-left:24px;font-size:14.8px;color:rgba(255,255,255,.86)}
  .cta-points li::before{
    content:"";position:absolute;left:0;top:8px;width:12px;height:7px;
    border-left:2px solid var(--copper-light);border-bottom:2px solid var(--copper-light);
    transform:rotate(-45deg);
  }
  .cta-action{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
  .cta-action .hint{font-size:13.5px;color:rgba(255,255,255,.6)}

  /* ---------- 隐私说明 ---------- */
  .privacy-note{border-top:1px solid var(--line);padding:32px 0 40px}
  .privacy-note p{font-size:14px;color:var(--faint);line-height:1.8;max-width:80ch}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#16211F;color:#C7CFCB;padding:72px 0 0;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:#fff;margin-bottom:16px}
  .footer-brand .brand-mark{background:linear-gradient(135deg,#4A7C74 0%,#D89B6E 100%)}
  .footer-brand .brand-mark::after{background:#16211F}
  .site-footer p{font-size:14.2px;color:#96A09B;line-height:1.8;max-width:34ch}
  .site-footer h3{font-size:14.5px;color:#fff;font-weight:650;margin-bottom:16px;letter-spacing:.02em}
  .footer-link{display:block;padding:7px 0;font-size:14.2px;color:#96A09B;transition:color .2s var(--ease)}
  .footer-link:hover{color:#fff}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);margin-top:52px;padding:22px 0 26px;
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.4px;color:#7E8A85;
  }

  /* ---------- 弹层 ---------- */
  .modal[hidden]{display:none}
  .modal{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:20px}
  .modal-mask{position:absolute;inset:0;background:rgba(14,24,23,.58);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
  .modal-card{
    position:relative;width:100%;max-width:480px;background:#fff;border-radius:16px;padding:32px;
    box-shadow:0 34px 64px -32px rgba(0,0,0,.55);animation:modalIn .28s var(--ease);
  }
  @keyframes modalIn{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
  .modal-card h2{font-size:23px}
  .modal-sub{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.7}
  .modal-close{
    position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;font-size:20px;line-height:1;color:var(--faint);
    transition:background-color .2s var(--ease),color .2s var(--ease);
  }
  .modal-close:hover{background:var(--sand);color:var(--ink)}
  .modal-form{margin-top:24px}
  .field{display:block;margin-bottom:16px}
  .field span{display:block;font-size:13.5px;font-weight:550;color:var(--muted);margin-bottom:7px}
  .field input,.field textarea{
    width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-input);
    background:#FDFCFA;font-size:15px;color:var(--ink);line-height:1.6;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
  }
  .field textarea{resize:vertical;min-height:92px}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--pine-400);background:#fff;box-shadow:0 0 0 3px rgba(74,124,116,.16);
  }
  .modal-form .btn{width:100%;margin-top:6px}
  .modal-privacy{margin-top:14px;font-size:12.5px;color:var(--faint);line-height:1.7}
  .form-done{
    margin-top:14px;font-size:14px;color:var(--ok);background:rgba(63,125,90,.09);
    border-radius:var(--r-input);padding:11px 14px;
  }
  .form-done[hidden]{display:none}

  /* ---------- 滚动显现 ---------- */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  .reveal.is-visible{opacity:1;transform:none}

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

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .hero{padding:132px 0 72px}
    .hero-grid{grid-template-columns:1fr;gap:48px}
    .hero-float{left:auto;right:16px;bottom:-20px}
    .solution-grid{grid-template-columns:1fr}
    .sol-card-lg{grid-row:auto}
    .news-grid,.faq-wrap{grid-template-columns:1fr;gap:32px}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:34px 0}
    .stat{padding:0 0 0 24px}
    .stat:nth-child(odd){border-left:0;padding-left:0}
    .timeline{grid-template-columns:repeat(2,1fr);gap:34px 24px}
    .tl-item:nth-child(2n)::before{right:0}
    .cta-inner{grid-template-columns:1fr;padding:44px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  }
  @media (max-width:900px){
    .nav-links{
      position:absolute;top:calc(100% + 10px);left:0;right:0;
      flex-direction:column;align-items:stretch;gap:2px;margin-left:0;padding:12px;
      background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:18px;
      box-shadow:0 24px 48px -26px rgba(20,27,26,.45);display:none;
    }
    .nav-links.is-open{display:flex}
    .nav-link{padding:12px 14px;font-size:15px;min-height:44px}
    .nav-toggle{display:flex}
    .nav-cta{display:none}
    .brand{margin-right:auto}
  }
  @media (max-width:768px){
    .section{padding:60px 0}
    .cta-band{padding-bottom:60px}
    .pain-list li{grid-template-columns:52px 1fr;gap:14px;padding:22px 0}
    .pain-q{font-size:17px}
    .news-item{grid-template-columns:1fr;gap:14px}
    .news-thumb{width:100%;height:170px}
    .modal{align-items:flex-end;padding:0}
    .modal-card{
      max-width:none;border-radius:18px 18px 0 0;padding:26px 20px calc(26px + env(safe-area-inset-bottom));
      animation:sheetIn .3s var(--ease);
    }
    @keyframes sheetIn{from{transform:translateY(100%)}to{transform:none}}
  }
  @media (max-width:560px){
    .container{padding:0 20px}
    .stats-grid{grid-template-columns:1fr;gap:28px}
    .stat{padding-left:0;border-left:0}
    .timeline{grid-template-columns:1fr}
    .tl-item::before{display:none}
    .cta-inner{padding:32px 22px}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .hero-actions .btn{width:100%}
  }

/* roulang page: article */
:root{
  --ink:#141B1A;
  --ink-2:#5A6360;
  --ink-3:#8C918D;
  --green-900:#1F3A38;
  --green-700:#2F5A55;
  --green-500:#4A7C74;
  --copper:#C2703F;
  --copper-soft:#D89B6E;
  --bg:#F7F5F1;
  --surface:#FFFFFF;
  --sand:#EFEBE4;
  --line:#E2DCD3;
  --ok:#3F7D5A;
  --warn:#B4452F;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --shadow-s:0 1px 2px rgba(20,27,26,.04);
  --shadow-m:0 12px 32px -12px rgba(20,27,26,.10);
  --shadow-l:0 18px 40px -16px rgba(20,27,26,.16);
  --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
input,textarea,select{font-family:inherit;font-size:16px;}
::selection{background:rgba(194,112,63,.22);}
:focus-visible{outline:2px solid var(--green-500);outline-offset:2px;border-radius:6px;}

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

/* ---------- 顶部悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:60;
  padding:14px 20px;
  transition:padding .25s var(--ease);
}
.nav-shell{
  position:relative;
  max-width:1180px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:16px;
  padding:10px 12px 10px 18px;
  border-radius:999px;
  background:rgba(255,255,255,.74);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(226,220,211,.9);
  box-shadow:var(--shadow-s);
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.95);
  border-color:#DCD4C8;
  box-shadow:var(--shadow-m);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--green-900);
  white-space:nowrap;
}
.brand-mark{
  width:22px;
  height:22px;
  border-radius:7px;
  position:relative;
  display:inline-block;
  background:linear-gradient(140deg,var(--green-900),var(--green-500) 58%,var(--copper-soft));
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:6px;
  border-radius:3px;
  border:1.5px solid rgba(255,255,255,.85);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  padding:9px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--ink-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--green-900);background:rgba(31,58,56,.06);}
.nav-link.is-active{color:var(--green-900);background:rgba(31,58,56,.10);font-weight:600;}
.nav-cta{margin-left:10px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  cursor:pointer;
  padding:0;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--green-900);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{
  background:var(--copper);
  color:#fff;
  box-shadow:0 10px 24px -14px rgba(194,112,63,.85);
}
.btn-primary:hover{background:#AF6134;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:#fff;
  color:var(--green-900);
  border-color:var(--line);
}
.btn-ghost:hover{border-color:var(--green-500);color:var(--green-700);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{
  background:rgba(255,255,255,.08);
  color:#fff;
  border-color:rgba(255,255,255,.42);
}
.btn-light:hover{background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-1px);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-block{width:100%;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  background:rgba(194,112,63,.12);
  color:#9B5228;
}
.badge-soft{
  background:rgba(31,58,56,.08);
  color:var(--green-700);
}
.tag{
  display:inline-block;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-size:13px;
  color:var(--ink-2);
}

/* ---------- 文章页头 ---------- */
.article-hero{
  padding:132px 0 52px;
  background-image:linear-gradient(180deg,rgba(247,245,241,.94),rgba(247,245,241,.99)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-3);
  margin-bottom:22px;
}
.crumb-link{color:var(--ink-2);transition:color .2s var(--ease);}
.crumb-link:hover{color:var(--copper);}
.crumb-sep{color:var(--line);}
.crumb-current{
  color:var(--ink-3);
  max-width:46ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-hero h1{
  margin:14px 0 0;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.22;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--green-900);
  max-width:22ch;
}
.meta-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:14px;
  margin-top:22px;
  font-size:14px;
  color:var(--ink-2);
}
.meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-dot{width:5px;height:5px;border-radius:50%;background:var(--copper-soft);display:inline-block;}
.hero-lead{
  margin:22px 0 0;
  max-width:62ch;
  font-size:17px;
  color:var(--ink-2);
}

/* ---------- 文章主体 ---------- */
.article-main{padding:64px 0 24px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:34px;
  align-items:start;
}
.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-s);
  padding:clamp(22px,4vw,52px);
}
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  font-size:clamp(21px,2.5vw,27px);
  line-height:1.35;
  font-weight:700;
  color:var(--green-900);
  margin:2em 0 .8em;
  padding-left:14px;
  border-left:3px solid var(--copper);
  scroll-margin-top:110px;
}
.article-body h3{
  font-size:20px;
  font-weight:700;
  margin:1.6em 0 .6em;
  color:var(--ink);
  scroll-margin-top:110px;
}
.article-body h4{font-size:17px;font-weight:700;margin:1.4em 0 .5em;}
.article-body ul,.article-body ol{margin:0 0 1.35em;padding-left:1.3em;}
.article-body li{margin:.42em 0;}
.article-body ul li::marker{color:var(--copper);}
.article-body ol li::marker{color:var(--copper);font-weight:700;}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 22px;
  border-left:4px solid var(--copper);
  background:var(--sand);
  border-radius:0 12px 12px 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:10px;margin:1.5em 0;height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:8px;}
.article-body a{color:var(--green-700);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--copper);}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2.2em 0;}
.article-body code{
  background:var(--sand);
  padding:2px 6px;
  border-radius:6px;
  font-size:14.5px;
  color:var(--green-700);
}
.article-body pre{
  background:#1B2C2A;
  color:#EDE9E2;
  padding:18px 20px;
  border-radius:12px;
  overflow-x:auto;
  font-size:14.5px;
  line-height:1.7;
  margin:1.5em 0;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:11px 14px;
  text-align:left;
}
.article-body th{background:var(--sand);font-weight:700;color:var(--green-900);}
.article-body strong{font-weight:700;color:var(--green-900);}
.article-foot{
  max-width:760px;
  margin-top:40px;
  padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
}
.article-foot .tags{display:flex;flex-wrap:wrap;gap:8px;}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--green-700);
  transition:color .2s var(--ease),gap .2s var(--ease);
}
.back-link:hover{color:var(--copper);gap:12px;}

/* 空态 */
.empty-state{
  max-width:640px;
  text-align:center;
  padding:26px 0 8px;
}
.empty-icon{
  width:56px;height:56px;
  margin:0 auto 20px;
  border-radius:16px;
  background:var(--sand);
  border:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--green-500);
  font-size:22px;
  font-weight:700;
}
.empty-state h2{margin:0 0 12px;font-size:24px;font-weight:700;color:var(--green-900);}
.empty-state p{margin:0 0 24px;color:var(--ink-2);}

/* ---------- 侧栏 ---------- */
.article-aside{
  position:sticky;
  top:104px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.aside-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--shadow-s);
}
.aside-card h3{
  margin:0 0 14px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--green-900);
  display:flex;
  align-items:center;
  gap:9px;
}
.aside-card h3::before{
  content:"";
  width:12px;height:2px;
  border-radius:2px;
  background:var(--copper);
}
.toc{display:flex;flex-direction:column;gap:2px;}
.toc-link{
  display:block;
  padding:8px 10px;
  border-radius:8px;
  font-size:14.5px;
  color:var(--ink-2);
  border-left:2px solid transparent;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.toc-link:hover{color:var(--green-900);background:rgba(31,58,56,.05);border-left-color:var(--copper);}
.toc-empty{font-size:14px;color:var(--ink-3);}
.hot-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.hot-list li + li{border-top:1px solid var(--line);}
.hot-list a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:11px 2px;
  font-size:14.5px;
  color:var(--ink-2);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.hot-list a:hover{color:var(--green-900);transform:translateX(3px);}
.hot-num{
  font-size:12.5px;
  font-weight:700;
  color:var(--copper);
  font-variant-numeric:tabular-nums;
}
.mini-cta{
  background:linear-gradient(150deg,var(--green-900),var(--green-700));
  color:#fff;
  border-color:transparent;
}
.mini-cta h3{color:#fff;}
.mini-cta h3::before{background:var(--copper-soft);}
.mini-cta p{margin:0 0 18px;font-size:14.5px;color:rgba(255,255,255,.78);line-height:1.75;}
.mini-cta .btn{width:100%;}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0 24px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:30px;
}
.section-head h2{
  margin:0;
  font-size:clamp(23px,3vw,32px);
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--green-900);
}
.section-head p{margin:8px 0 0;color:var(--ink-2);font-size:15.5px;}
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px;
}
.post-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow-s);
  display:flex;
  flex-direction:column;
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:var(--green-500);box-shadow:var(--shadow-m);}
.post-thumb{
  aspect-ratio:16/10;
  width:100%;
  object-fit:cover;
  background:var(--sand);
}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.post-body h3{margin:12px 0 8px;font-size:18.5px;line-height:1.45;font-weight:700;color:var(--green-900);}
.post-body p{margin:0 0 18px;font-size:14.8px;color:var(--ink-2);line-height:1.75;}
.post-more{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--copper);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;
  margin-top:72px;
  padding:64px 0;
  background:linear-gradient(120deg,#1F3A38,#264742 55%,#2F5A55);
  color:#fff;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.14;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  flex-wrap:wrap;
}
.cta-inner h2{
  margin:0 0 10px;
  font-size:clamp(23px,3vw,32px);
  font-weight:800;
  letter-spacing:-.02em;
  color:#fff;
}
.cta-inner p{margin:0;max-width:56ch;color:rgba(255,255,255,.8);font-size:15.5px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#162725;
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  font-size:14.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:34px;
  padding-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-grid p{margin:0;line-height:1.8;color:rgba(255,255,255,.66);}
.footer-grid h3{
  margin:0 0 14px;
  font-size:15px;
  font-weight:700;
  color:#fff;
}
.footer-link{
  display:block;
  padding:6px 0;
  color:rgba(255,255,255,.68);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link:hover{color:var(--copper-soft);transform:translateX(3px);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}

/* ---------- 滚动显现 ---------- */
html.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
html.js .reveal.is-visible{opacity:1;transform:none;}

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

/* ---------- 响应式 ---------- */
@media (max-width:1079px){
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .article-aside{position:static;top:auto;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:860px){
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    margin-left:0;
    padding:12px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow-l);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:12px 14px;font-size:15.5px;}
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-cta{display:none;}
  .article-hero{padding:118px 0 44px;}
  .article-hero h1{max-width:none;}
}
@media (max-width:640px){
  body .container,.wrap{padding:0 20px;}
  .site-header{padding:10px 14px;}
  .brand{font-size:15.5px;}
  .article-hero{padding:106px 0 38px;}
  .article-main{padding:44px 0 12px;}
  .article-body{font-size:16.5px;line-height:1.85;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .related{padding:52px 0 12px;}
  .cta-band{margin-top:52px;padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .crumb-current{max-width:26ch;}
}

/* roulang page: category1 */
:root{
  --ink:#141B1A;
  --ink-2:#5A6360;
  --ink-3:#8C918D;
  --paper:#F7F5F1;
  --white:#FFFFFF;
  --sand:#EFEBE4;
  --qing:#1F3A38;
  --qing-2:#2F5A55;
  --qing-3:#4A7C74;
  --copper:#C2703F;
  --copper-l:#D89B6E;
  --line:#E2DCD3;
  --ok:#3F7D5A;
  --warn:#B4452F;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(20,27,26,.04);
  --sh-2:0 1px 2px rgba(20,27,26,.04), 0 12px 32px -12px rgba(20,27,26,.10);
  --sh-3:0 18px 40px -16px rgba(20,27,26,.16);
  --ease:cubic-bezier(.22,1,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
button{border:0;background:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;line-height:1.25;font-weight:700;}
p{margin:0;}
:focus-visible{outline:2px solid var(--qing-2);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;font-weight:600;color:var(--qing-3);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--copper);border-radius:2px;}
.section-title{font-size:clamp(24px,3vw,34px);margin-top:14px;}
.section-lead{color:var(--ink-2);max-width:640px;margin-top:14px;font-size:17px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:14px 20px;
  transition:padding .3s var(--ease);
}
.site-header.is-scrolled{padding:10px 20px;}
.nav-shell{
  position:relative;
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:14px;
  padding:10px 12px 10px 20px;
  border-radius:999px;
  background:rgba(255,255,255,.74);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(226,220,211,.9);
  box-shadow:var(--sh-1);
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.95);
  border-color:var(--line);
  box-shadow:0 12px 32px -12px rgba(20,27,26,.14);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:750;letter-spacing:-.01em;white-space:nowrap;
}
.brand-mark{
  position:relative;flex:none;
  width:20px;height:20px;border-radius:7px;
  background:linear-gradient(140deg,var(--qing-3),var(--qing));
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.35);
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:9px;
  width:9px;height:9px;border-radius:3px;
  background:var(--copper-l);
  box-shadow:0 0 0 1px rgba(255,255,255,.25);
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--qing);background:rgba(31,58,56,.06);}
.nav-link.is-active{color:var(--qing);background:rgba(31,58,56,.09);font-weight:650;}
.nav-cta{margin-left:6px;}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:999px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);background:rgba(255,255,255,.9);
}
.nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--qing);transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;
  font-size:15.5px;font-weight:600;letter-spacing:0;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),box-shadow .25s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--copper);color:#fff;box-shadow:0 10px 24px -14px rgba(194,112,63,.9);}
.btn-primary:hover{background:#AC5F31;transform:translateY(-1px);box-shadow:0 16px 30px -16px rgba(194,112,63,.95);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--qing);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--qing-3);color:var(--qing-2);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.35);}
.btn-light:hover{background:rgba(255,255,255,.2);transform:translateY(-1px);}
.btn-sm{padding:10px 20px;font-size:14.5px;}
.btn-text{color:var(--qing-2);font-weight:600;display:inline-flex;align-items:center;gap:6px;padding:6px 0;}
.btn-text::after{content:"→";transition:transform .22s var(--ease);}
.btn-text:hover::after{transform:translateX(4px);}
.btn-block{width:100%;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:150px 0 80px;
  background:
    radial-gradient(1000px 460px at 82% -10%, rgba(74,124,116,.16), transparent 60%),
    linear-gradient(180deg,#FBF9F6 0%, var(--paper) 70%);
  overflow:hidden;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);}
.crumb a:hover{color:var(--qing-2);}
.crumb span.sep{color:var(--line);}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
  margin-top:26px;
}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:780;
  line-height:1.18;
  letter-spacing:-.025em;
}
.page-hero .lead{
  margin-top:18px;font-size:17.5px;color:var(--ink-2);max-width:560px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;border-radius:999px;
  font-size:13.5px;font-weight:600;
  background:rgba(31,58,56,.06);color:var(--qing-2);
  border:1px solid rgba(31,58,56,.10);
}
.tag-copper{background:rgba(194,112,63,.10);color:#A85C2E;border-color:rgba(194,112,63,.18);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
}
.float-card{
  position:absolute;left:-16px;bottom:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-3);
  padding:16px 18px;min-width:196px;
}
.float-card .num{
  font-size:26px;font-weight:760;color:var(--qing);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1.2;
}
.float-card .lbl{font-size:13px;color:var(--ink-3);margin-top:4px;}

/* ---------- 通用卡片 ---------- */
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--qing-3);box-shadow:var(--sh-2);}
.card h3{font-size:20px;margin-bottom:10px;}
.card p{color:var(--ink-2);font-size:15.5px;}
.badge{
  display:inline-block;padding:4px 11px;border-radius:999px;
  font-size:12.5px;font-weight:650;letter-spacing:.02em;
  background:rgba(31,58,56,.07);color:var(--qing-2);
}
.badge-copper{background:rgba(194,112,63,.12);color:#A85C2E;}

/* ---------- 步骤时间轴 ---------- */
.split{display:grid;grid-template-columns:1.35fr .65fr;gap:56px;align-items:start;}
.step-list{margin-top:40px;}
.step{
  position:relative;
  display:grid;grid-template-columns:58px 1fr;gap:20px;
  padding-bottom:32px;
}
.step:last-child{padding-bottom:0;}
.step::after{
  content:"";position:absolute;left:28px;top:60px;bottom:8px;width:1px;
  background:linear-gradient(var(--line),rgba(226,220,211,0));
}
.step:last-child::after{display:none;}
.step-num{
  width:58px;height:58px;border-radius:16px;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);
  font-weight:760;font-size:16px;color:var(--qing-2);
  font-variant-numeric:tabular-nums;
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.step:hover .step-num{border-color:var(--copper);color:var(--copper);background:rgba(194,112,63,.06);}
.step h3{font-size:19.5px;margin-bottom:8px;}
.step p{color:var(--ink-2);font-size:15.5px;}
.step-note{
  margin-top:10px;font-size:14px;color:var(--ink-3);
  padding-left:14px;border-left:2px solid var(--sand);
}
.aside-card{
  position:sticky;top:112px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-2);
}
.aside-card h3{font-size:19px;margin-bottom:16px;}
.aside-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:15px;color:var(--ink-2);
  padding:11px 0;border-bottom:1px dashed var(--line);
}
.aside-list li:last-child{border-bottom:0;}
.aside-list .dot{
  flex:none;width:7px;height:7px;border-radius:50%;background:var(--copper);margin-top:10px;
}
.aside-facts{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px;
}
.fact{
  background:var(--sand);border-radius:var(--r-input);padding:12px 14px;
}
.fact b{display:block;font-size:19px;color:var(--qing);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}
.fact span{font-size:12.5px;color:var(--ink-3);}

/* ---------- 网格 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:44px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:40px;}
.method{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;display:flex;flex-direction:column;gap:12px;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.method:hover{transform:translateY(-4px);border-color:var(--qing-3);box-shadow:var(--sh-2);}
.method .icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(74,124,116,.18),rgba(31,58,56,.10));
  color:var(--qing);font-weight:700;font-size:17px;
}
.method h3{font-size:18.5px;}
.method p{font-size:15px;color:var(--ink-2);}
.method ul{margin-top:2px;display:flex;flex-direction:column;gap:8px;}
.method li{font-size:14.5px;color:var(--ink-2);display:flex;gap:8px;}
.method li::before{content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--qing-3);margin-top:9px;}

/* ---------- 深色区块 ---------- */
.band{
  background:var(--qing);
  color:#fff;
  border-radius:24px;
  padding:60px 56px;
  position:relative;
  overflow:hidden;
}
.band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(216,155,110,.28),transparent 68%);
}
.band h2{color:#fff;}
.band .section-lead{color:rgba(255,255,255,.76);}
.check-list{margin-top:38px;display:grid;grid-template-columns:1fr 1fr;gap:0 44px;position:relative;z-index:1;}
.check-list li{
  padding:20px 0;border-bottom:1px solid rgba(255,255,255,.16);
  display:flex;gap:14px;align-items:flex-start;
}
.check-list li:nth-last-child(-n+2){border-bottom:0;}
.check-list .idx{
  flex:none;font-variant-numeric:tabular-nums;font-weight:700;color:var(--copper-l);font-size:15px;margin-top:2px;
}
.check-list b{display:block;font-size:16.5px;color:#fff;font-weight:650;margin-bottom:4px;}
.check-list span{font-size:14.5px;color:rgba(255,255,255,.72);}

/* ---------- 加固对照 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:44px;
}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;
}
.compare-col h3{font-size:18px;display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.pill{
  width:26px;height:26px;border-radius:9px;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:#fff;background:var(--ok);
}
.pill.warn{background:var(--warn);}
.compare-col li{
  display:flex;gap:10px;font-size:15px;color:var(--ink-2);
  padding:11px 0;border-bottom:1px solid var(--sand);
}
.compare-col li:last-child{border-bottom:0;}
.compare-col li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:50%;background:var(--qing-3);margin-top:10px;
}
.compare-col.is-warn li::before{background:var(--copper);}

/* ---------- FAQ ---------- */
.faq{margin-top:40px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:18px;
  padding:24px 0;text-align:left;
  font-size:17.5px;font-weight:650;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--qing-2);}
.faq-q .mark{
  flex:none;margin-left:auto;width:26px;height:26px;border-radius:999px;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:16px;color:var(--qing-2);font-weight:500;
  transition:transform .25s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.faq-item.is-open .faq-q .mark{transform:rotate(45deg);background:var(--copper);color:#fff;border-color:var(--copper);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-a p{
  padding:0 0 26px 0;color:var(--ink-2);font-size:15.5px;line-height:1.85;
  border-left:2px solid transparent;
}
.faq-item.is-open .faq-a p{border-left-color:var(--copper);padding-left:16px;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--qing);
  border-radius:24px;
  padding:56px;
  display:grid;grid-template-columns:1.3fr .7fr;gap:36px;align-items:center;
  color:#fff;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-60px;bottom:-100px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(74,124,116,.5),transparent 70%);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);position:relative;}
.cta-band p{color:rgba(255,255,255,.76);margin-top:12px;position:relative;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;position:relative;}
.cta-side{
  position:relative;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-card);padding:24px;
}
.cta-side li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.86);padding:8px 0;}
.cta-side li::before{content:"◆";color:var(--copper-l);font-size:11px;margin-top:8px;}

/* ---------- 相关分类 ---------- */
.related{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:40px;}
.rel-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--qing-3);box-shadow:var(--sh-2);}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.rel-card .rel-body{padding:16px 16px 20px;}
.rel-card h3{font-size:16px;}
.rel-card p{font-size:13.5px;color:var(--ink-3);margin-top:6px;}

/* ---------- 弹层 ---------- */
.modal{
  position:fixed;inset:0;z-index:120;
  display:none;align-items:center;justify-content:center;
  padding:24px;
}
.modal.is-open{display:flex;}
.modal-mask{position:absolute;inset:0;background:rgba(20,27,26,.55);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);}
.modal-panel{
  position:relative;width:100%;max-width:480px;
  background:#fff;border-radius:16px;padding:30px;
  box-shadow:var(--sh-3);
  animation:modalIn .3s var(--ease);
  max-height:88vh;overflow:auto;
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px) scale(.98);}to{opacity:1;transform:none;}}
.modal-panel h2{font-size:22px;}
.modal-panel .modal-sub{color:var(--ink-2);font-size:15px;margin-top:8px;}
.field{margin-top:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:7px;}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);
  border:1px solid var(--line);background:#FCFBF9;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--qing-3);background:#fff;
  box-shadow:0 0 0 3px rgba(74,124,116,.14);
}
.modal-close{
  position:absolute;right:16px;top:16px;width:36px;height:36px;border-radius:999px;
  display:grid;place-items:center;color:var(--ink-2);border:1px solid var(--line);background:#fff;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.modal-close:hover{background:var(--sand);color:var(--ink);}
.privacy-note{font-size:12.5px;color:var(--ink-3);margin-top:16px;line-height:1.7;}
.form-ok{
  display:none;margin-top:16px;padding:13px 16px;border-radius:var(--r-input);
  background:rgba(63,125,90,.10);border:1px solid rgba(63,125,90,.3);
  color:#2E6446;font-size:14.5px;
}
.form-ok.is-show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:#16292A;color:rgba(255,255,255,.72);padding:72px 0 26px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:750;}
.site-footer h3{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:16px;font-weight:650;}
.footer-link{display:block;font-size:14.5px;padding:6px 0;color:rgba(255,255,255,.72);transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-link:hover{color:var(--copper-l);transform:translateX(3px);}
.site-footer p{font-size:14.5px;line-height:1.8;margin-top:14px;}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s var(--ease),transform .65s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@keyframes riseIn{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}
.rise{animation:riseIn .55s var(--ease) both;}
.rise-1{animation-delay:.05s;}
.rise-2{animation-delay:.14s;}
.rise-3{animation-delay:.23s;}
.rise-4{animation-delay:.32s;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border:1px solid var(--line);border-radius:18px;
    padding:10px;box-shadow:var(--sh-2);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:12px 14px;min-height:44px;display:flex;align-items:center;font-size:15.5px;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:-1;}
  .split{grid-template-columns:1fr;gap:40px;}
  .aside-card{position:static;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .related{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .page-hero{padding:128px 0 56px;}
  .band{padding:42px 26px;border-radius:20px;}
  .check-list{grid-template-columns:1fr;gap:0;}
  .check-list li:nth-last-child(-n+2){border-bottom:1px solid rgba(255,255,255,.16);}
  .check-list li:last-child{border-bottom:0;}
  .compare{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:38px 26px;border-radius:20px;}
  .grid-2{grid-template-columns:1fr;}
  .related{grid-template-columns:repeat(2,1fr);}
  .modal{padding:0;align-items:flex-end;}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;max-height:92vh;}
}
@media (max-width:520px){
  .grid-4{grid-template-columns:1fr;}
  .related{grid-template-columns:1fr;}
  .float-card{left:0;bottom:14px;padding:13px 15px;min-width:170px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .brand{font-size:16px;}
}

/* roulang page: category2 */
:root{
  --ink:#141B1A;
  --ink-2:#5A6360;
  --ink-3:#8C918D;
  --line:#E2DCD3;
  --bg:#F7F5F1;
  --white:#FFFFFF;
  --sand:#EFEBE4;
  --teal:#1F3A38;
  --teal-2:#2F5A55;
  --teal-3:#4A7C74;
  --copper:#C2703F;
  --copper-2:#D89B6E;
  --success:#3F7D5A;
  --warn:#B4452F;
  --radius-card:14px;
  --radius-pic:12px;
  --radius-field:10px;
  --shadow-soft:0 1px 2px rgba(20,27,26,.04),0 12px 32px -12px rgba(20,27,26,.10);
  --shadow-lift:0 18px 40px -16px rgba(20,27,26,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--teal-3);outline-offset:2px;border-radius:6px}

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

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;
  top:16px;left:0;right:0;
  z-index:90;
  transition:top .25s var(--ease);
}
.nav-shell{
  width:calc(100% - 32px);
  max-width:1180px;
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border-radius:999px;
  background:rgba(255,255,255,.78);
  border:1px solid rgba(226,220,211,.85);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:0 1px 2px rgba(20,27,26,.03);
  transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.94);
  border-color:var(--line);
  box-shadow:0 10px 28px -14px rgba(20,27,26,.22);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  font-size:17px;
  letter-spacing:-0.01em;
  color:var(--teal);
  padding:6px 8px 6px 6px;
  border-radius:999px;
  white-space:nowrap;
  transition:background .22s var(--ease);
}
.brand:hover{background:var(--sand)}
.brand-mark{
  width:22px;height:22px;
  flex:0 0 22px;
  border-radius:7px;
  background:linear-gradient(140deg,var(--teal) 0%,var(--teal-3) 52%,var(--copper) 100%);
  position:relative;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:6px 6px 6px 6px;
  border-radius:3px;
  background:rgba(255,255,255,.86);
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 14px;
  border-radius:999px;
  font-size:15px;
  color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-link:hover{background:var(--sand);color:var(--teal)}
.nav-link.is-active{background:var(--teal);color:#fff}
.nav-cta{margin-left:6px}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  margin-left:auto;
}
.nav-toggle span{
  display:block;
  width:17px;height:2px;
  border-radius:2px;
  background:var(--teal);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle.is-active span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-toggle.is-active span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--copper);color:#fff;box-shadow:0 10px 24px -14px rgba(194,112,63,.85)}
.btn-primary:hover{background:#AE6236;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--teal);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--teal-3);color:var(--teal-2);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:#fff;color:var(--teal);border-color:transparent}
.btn-light:hover{background:var(--sand);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.09)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-arrow::after{content:"→";font-size:14px;transition:transform .2s var(--ease)}
.btn-arrow:hover::after{transform:translateX(3px)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-sand{background:var(--sand)}
.section-white{background:var(--white)}
.section-teal{background:var(--teal);color:#fff}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--copper);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--copper)}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-0.02em;line-height:1.3}
.section-desc{margin-top:14px;color:var(--ink-2);font-size:16px}
.section-teal .section-desc{color:rgba(255,255,255,.78)}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;
  padding:140px 0 76px;
  background:linear-gradient(180deg,#FBF9F6 0%,var(--bg) 62%,var(--sand) 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  top:-160px;right:-140px;
  width:520px;height:520px;
  border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(194,112,63,.16),rgba(194,112,63,0) 68%);
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--ink-2);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--copper)}
.breadcrumb span{color:var(--ink-3)}
.page-hero h1{
  font-size:clamp(32px,5vw,52px);
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.18;
  max-width:16em;
}
.hero-lead{
  margin-top:20px;
  font-size:17.5px;
  color:var(--ink-2);
  max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 14px;
  border-radius:999px;
  background:#fff;
  border:1px solid var(--line);
  font-size:13.5px;
  color:var(--ink-2);
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal-3)}
.hero-media{position:relative}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--radius-pic);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}
.hero-float{
  position:absolute;
  left:-18px;
  bottom:-22px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px 20px;
  box-shadow:var(--shadow-lift);
  max-width:230px;
}
.hero-float .float-num{
  font-size:26px;
  font-weight:800;
  color:var(--teal);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-float .float-label{font-size:13px;color:var(--ink-2);margin-top:2px}

/* ---------- 2×2 特征卡 ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.feature-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-soft);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--teal-3);box-shadow:var(--shadow-lift)}
.feature-icon{
  width:42px;height:42px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,rgba(31,58,56,.10),rgba(194,112,63,.14));
  color:var(--teal);
  font-weight:800;
  font-size:15px;
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.feature-card h3{font-size:20px;font-weight:700;letter-spacing:-0.01em}
.feature-card p{margin-top:10px;color:var(--ink-2);font-size:15.5px}
.feature-list{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.feature-list li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  color:var(--ink-2);
}
.feature-list li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:2px;
  border-radius:2px;
  background:var(--copper);
}

/* ---------- 加固步骤时间轴 ---------- */
.step-timeline{position:relative;margin-top:8px}
.step-timeline::before{
  content:"";
  position:absolute;
  left:9px;top:10px;bottom:10px;
  width:2px;
  background:linear-gradient(180deg,var(--teal-3),rgba(226,220,211,.7));
}
.step-item{
  position:relative;
  padding:0 0 34px 42px;
}
.step-item:last-child{padding-bottom:0}
.step-item::before{
  content:"";
  position:absolute;
  left:0;top:8px;
  width:20px;height:20px;
  border-radius:50%;
  background:#fff;
  border:2px solid var(--teal-3);
}
.step-item::after{
  content:"";
  position:absolute;
  left:6px;top:14px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--copper);
}
.step-item h3{font-size:19px;font-weight:700}
.step-item p{margin-top:8px;color:var(--ink-2);font-size:15.5px;max-width:52em}
.step-meta{
  display:inline-block;
  margin-bottom:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--copper);
  font-variant-numeric:tabular-nums;
}
.step-side{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-soft);
  position:sticky;
  top:110px;
}
.step-side h3{font-size:18px;font-weight:700}
.step-side p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.step-side .side-note{
  margin-top:18px;
  padding-top:18px;
  border-top:1px dashed var(--line);
  font-size:14px;
  color:var(--ink-3);
}
.split-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:48px;
  align-items:start;
}

/* ---------- 数据带 ---------- */
.stat-band{padding:80px 0}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:28px;
}
.stat-item{padding-right:20px;border-right:1px solid rgba(255,255,255,.16)}
.stat-item:last-child{border-right:none;padding-right:0}
.stat-num{
  font-size:clamp(30px,4vw,44px);
  font-weight:800;
  letter-spacing:-0.02em;
  line-height:1.1;
  color:var(--copper-2);
  font-variant-numeric:tabular-nums;
}
.stat-label{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.78)}

/* ---------- 提示条 ---------- */
.alert-bar{
  display:flex;
  align-items:flex-start;
  gap:18px;
  padding:22px 26px;
  border-radius:var(--radius-card);
  background:linear-gradient(100deg,rgba(194,112,63,.12),rgba(194,112,63,.04));
  border:1px solid rgba(194,112,63,.34);
}
.alert-bar .alert-mark{
  flex:0 0 auto;
  width:34px;height:34px;
  border-radius:10px;
  background:#fff;
  border:1px solid rgba(194,112,63,.4);
  display:flex;align-items:center;justify-content:center;
  color:var(--copper);
  font-weight:800;
}
.alert-bar h3{font-size:18px;font-weight:700}
.alert-bar p{margin-top:6px;font-size:15px;color:var(--ink-2)}
.alert-bar a{color:var(--copper);font-weight:600;border-bottom:1px solid rgba(194,112,63,.45)}
.alert-bar a:hover{color:#AE6236}

/* ---------- 图文区块 ---------- */
.media-block{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:52px;
  align-items:center;
}
.media-block img{
  width:100%;
  aspect-ratio:5/4;
  object-fit:cover;
  border-radius:var(--radius-pic);
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
}
.media-copy h2{font-size:clamp(23px,2.8vw,31px);font-weight:700;letter-spacing:-0.02em;line-height:1.32}
.media-copy p{margin-top:16px;color:var(--ink-2)}
.check-list{margin-top:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.check-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;
  color:var(--ink-2);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.55em;
  width:14px;height:14px;
  border-radius:5px;
  background:rgba(63,125,90,.14);
  border:1px solid rgba(63,125,90,.4);
}
.check-list li::after{
  content:"";
  position:absolute;
  left:4px;top:.92em;
  width:6px;height:3px;
  border-left:1.6px solid var(--success);
  border-bottom:1.6px solid var(--success);
  transform:rotate(-45deg);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.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:20px;
  padding:22px 6px 22px 16px;
  background:none;
  border:none;
  text-align:left;
  font-size:17.5px;
  font-weight:600;
  cursor:pointer;
  position:relative;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--copper)}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:24px;bottom:24px;
  width:3px;
  border-radius:3px;
  background:var(--copper);
  opacity:0;
  transform:scaleY(.4);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1;transform:scaleY(1)}
.faq-icon{
  flex:0 0 auto;
  width:26px;height:26px;
  border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  color:var(--teal);
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--teal);color:#fff;transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s var(--ease);
}
.faq-a p{padding:0 46px 24px 16px;color:var(--ink-2);font-size:15.5px;line-height:1.8}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;
  border-radius:20px;
  padding:56px;
  background:linear-gradient(130deg,#1F3A38 0%,#2F5A55 62%,#3D6C64 100%);
  color:#fff;
  overflow:hidden;
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,auto);
  gap:36px;
  align-items:center;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-90px;top:-90px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(216,155,110,.30),rgba(216,155,110,0) 70%);
}
.cta-panel h2{font-size:clamp(23px,3vw,32px);font-weight:700;letter-spacing:-0.02em;line-height:1.3;position:relative}
.cta-panel p{margin-top:14px;color:rgba(255,255,255,.8);position:relative;max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:1}

/* ---------- 相关分类 ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.related-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-soft);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:var(--teal-3);box-shadow:var(--shadow-lift)}
.related-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
}
.related-body{padding:18px 20px 22px}
.related-body .badge{margin-bottom:10px}
.related-body h3{font-size:16.5px;font-weight:700;line-height:1.5}
.related-body p{margin-top:8px;font-size:14px;color:var(--ink-2)}
.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:600;
  background:rgba(31,58,56,.08);
  color:var(--teal-2);
}
.badge-copper{background:rgba(194,112,63,.12);color:#A85F31}
.badge-success{background:rgba(63,125,90,.13);color:var(--success)}

/* ---------- 弹层 ---------- */
.modal{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal.is-open{display:flex}
.modal-mask{
  position:absolute;
  inset:0;
  background:rgba(20,27,26,.52);
  backdrop-filter:blur(4px);
}
.modal-card{
  position:relative;
  width:100%;
  max-width:480px;
  background:#fff;
  border-radius:16px;
  padding:30px;
  box-shadow:0 30px 60px -24px rgba(20,27,26,.4);
  animation:modalIn .3s var(--ease);
}
@keyframes modalIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.modal-card h3{font-size:21px;font-weight:700}
.modal-card .modal-sub{margin-top:8px;font-size:14.5px;color:var(--ink-2)}
.modal-close{
  position:absolute;
  right:16px;top:16px;
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
  color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.modal-close:hover{background:var(--sand);color:var(--teal)}
.form-grid{display:grid;gap:14px;margin-top:22px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:6px}
.field input,.field textarea{
  width:100%;
  padding:12px 14px;
  border-radius:var(--radius-field);
  border:1px solid var(--line);
  background:#FCFBF9;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--teal-3);
  background:#fff;
  box-shadow:0 0 0 3px rgba(74,124,116,.16);
}
.field textarea{min-height:96px;resize:vertical}
.form-note{margin-top:14px;font-size:12.5px;color:var(--ink-3);line-height:1.7}
.form-note a{color:var(--copper);border-bottom:1px solid rgba(194,112,63,.4)}
.form-success{
  margin-top:16px;
  padding:12px 16px;
  border-radius:var(--radius-field);
  background:rgba(63,125,90,.1);
  border:1px solid rgba(63,125,90,.32);
  color:var(--success);
  font-size:14px;
  display:none;
}
.form-success.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#162C2A;
  color:rgba(255,255,255,.72);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-weight:800;
  font-size:17px;
  margin-bottom:14px;
}
.site-footer h3{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:14px;
}
.site-footer p{font-size:14px;line-height:1.8}
.footer-link{
  display:block;
  padding:6px 0;
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link:hover{color:var(--copper-2);transform:translateX(2px)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
  padding-top:22px;
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.hero-in{animation:heroUp .6s var(--ease) both}
.hero-in.delay-1{animation-delay:.08s}
.hero-in.delay-2{animation-delay:.16s}
.hero-in.delay-3{animation-delay:.24s}
.hero-in.delay-4{animation-delay:.32s}
@keyframes heroUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media img{aspect-ratio:16/9}
  .hero-float{left:auto;right:16px;bottom:-20px}
  .split-grid{grid-template-columns:1fr;gap:34px}
  .step-side{position:static}
  .media-block{grid-template-columns:1fr;gap:32px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
  .stat-item:nth-child(2n){border-right:none;padding-right:0}
  .cta-panel{grid-template-columns:1fr;padding:44px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .nav-links{
    position:absolute;
    top:calc(100% + 12px);
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:14px;
    border-radius:20px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);
    box-shadow:0 20px 44px -20px rgba(20,27,26,.28);
    display:none;
  }
  .nav-links.is-open{display:flex}
  .nav-link{min-height:46px;padding:12px 16px;border-radius:14px}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-shell{position:relative;border-radius:26px}
}
@media (max-width:768px){
  .section{padding:64px 0}
  .section-tight{padding:52px 0}
  .page-hero{padding:118px 0 60px}
  .container{padding:0 20px}
  .feature-grid{grid-template-columns:1fr}
  .check-list{grid-template-columns:1fr}
  .stat-band{padding:60px 0}
  .alert-bar{flex-direction:column;gap:14px}
  .cta-panel{padding:34px 26px;border-radius:18px}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .related-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-right:none;padding-right:0;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.14)}
  .stat-item:last-child{border-bottom:none;padding-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding-right:0}
  .faq-a p{padding-right:16px}
  .modal{padding:0;align-items:flex-end}
  .modal-card{max-width:100%;border-radius:18px 18px 0 0;padding:26px 20px 30px}
}

/* roulang page: category3 */
:root{
  --primary:#1F3A38;
  --primary-600:#2F5A55;
  --primary-400:#4A7C74;
  --accent:#C2703F;
  --accent-soft:#D89B6E;
  --bg:#F7F5F1;
  --sand:#EFEBE4;
  --white:#FFFFFF;
  --ink:#141B1A;
  --ink-soft:#5A6360;
  --ink-mute:#8C918D;
  --line:#E2DCD3;
  --ok:#3F7D5A;
  --warn:#B4452F;
  --r-card:14px;
  --r-img:12px;
  --r-input:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,27,26,.04), 0 12px 32px -12px rgba(20,27,26,.10);
  --sh-2:0 18px 40px -16px rgba(20,27,26,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
.page-body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section.is-white{background:var(--white);}
.section.is-sand{background:var(--sand);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head.is-center{margin-left:auto;margin-right:auto;text-align:center;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(194,112,63,.10);
  border:1px solid rgba(194,112,63,.22);
}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);}
.h1{
  font-size:clamp(32px,5vw,58px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  margin:18px 0 0;
  color:var(--primary);
}
.h2{
  font-size:clamp(24px,3vw,34px);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.3;
  margin:0 0 14px;
  color:var(--primary);
}
.h3{
  font-size:20px;
  font-weight:700;
  line-height:1.45;
  margin:0 0 10px;
  color:var(--primary);
}
.lead{font-size:17px;line-height:1.85;color:var(--ink-soft);}
.text-sm{font-size:14.5px;line-height:1.75;color:var(--ink-mute);}
.num{font-variant-numeric:tabular-nums;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  text-decoration:none;cursor:pointer;border:1px solid transparent;
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -14px rgba(194,112,63,.9);}
.btn-primary:hover{background:#AF6335;transform:translateY(-1px);box-shadow:0 14px 28px -12px rgba(194,112,63,.75);}
.btn-ghost{background:var(--white);color:var(--primary);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--primary-400);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-onDark{background:#fff;color:var(--primary);}
.btn-onDark:hover{background:#F4F1EB;transform:translateY(-1px);}
.btn-outlineDark{background:transparent;color:#fff;border-color:rgba(255,255,255,.38);}
.btn-outlineDark:hover{border-color:#fff;transform:translateY(-1px);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--primary-400);outline-offset:2px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-weight:600;font-size:15px;text-decoration:none;
  border-bottom:1px solid rgba(31,58,56,.25);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease),gap .2s var(--ease);
}
.btn-text:hover{color:var(--accent);border-color:var(--accent);gap:10px;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:14px 20px;
  transition:padding .28s var(--ease);
}
.nav-shell{
  position:relative;
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:16px;
  padding:10px 14px 10px 22px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(226,220,211,.9);
  box-shadow:0 1px 2px rgba(20,27,26,.04);
  transition:background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{padding:10px 20px;}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.95);
  border-color:var(--line);
  box-shadow:0 12px 32px -14px rgba(20,27,26,.20);
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;letter-spacing:-.01em;
  color:var(--primary);text-decoration:none;white-space:nowrap;
}
.brand-mark{
  width:18px;height:18px;border-radius:6px;flex:none;
  background:linear-gradient(135deg,var(--accent) 0%,var(--primary-400) 100%);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.55);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--ink-soft);text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--primary);background:rgba(31,58,56,.06);}
.nav-link.is-active{color:var(--primary);background:rgba(31,58,56,.10);font-weight:600;}
.nav-cta{flex:none;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  width:44px;height:44px;margin-left:auto;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;cursor:pointer;
  transition:border-color .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--primary);transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle:hover{border-color:var(--primary-400);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg);}

/* ============ Hero ============ */
.hero{
  padding:142px 0 92px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 78%);
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;color:var(--ink-mute);margin-bottom:20px;
}
.breadcrumb a{color:var(--ink-soft);text-decoration:none;transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:var(--line);}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.22fr) minmax(0,1fr);gap:56px;align-items:center;}
.hero-copy{max-width:640px;}
.hero-sub{font-size:18px;line-height:1.85;color:var(--ink-soft);margin-top:20px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;color:var(--ink-soft);
}
.tag::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--primary-400);flex:none;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid rgba(226,220,211,.95);
  box-shadow:var(--sh-1);
}
.hero-float{
  position:absolute;left:-16px;bottom:-20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 18px;box-shadow:var(--sh-2);max-width:250px;
}
.hero-float .num-big{font-size:22px;font-weight:800;color:var(--accent);letter-spacing:-.02em;line-height:1.2;}
.hero-float .num-cap{font-size:13px;color:var(--ink-mute);line-height:1.6;margin-top:4px;}

/* ============ 四步进度带 ============ */
.steps{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.steps-line{position:absolute;left:16px;right:16px;top:17px;height:1px;background:var(--line);}
.step{position:relative;}
.step-num{
  width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-size:13px;font-weight:700;
  margin-bottom:20px;position:relative;z-index:1;
  box-shadow:0 0 0 6px var(--bg);
}
.section.is-white .step-num{box-shadow:0 0 0 6px var(--white);}
.step:first-child .step-num{background:var(--accent);}
.step p{color:var(--ink-soft);font-size:15px;line-height:1.8;}
.step .step-meta{
  display:inline-block;margin-top:14px;font-size:13px;color:var(--primary-400);
  padding:5px 12px;border-radius:var(--r-pill);background:rgba(74,124,116,.10);
}

/* ============ 对照清单 ============ */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-1);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.compare-col:hover{border-color:var(--primary-400);transform:translateY(-4px);box-shadow:var(--sh-2);}
.compare-col.is-accent{border-color:rgba(194,112,63,.45);}
.compare-col.is-accent:hover{border-color:var(--accent);}
.col-badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(31,58,56,.08);color:var(--primary);
}
.compare-col.is-accent .col-badge{background:rgba(194,112,63,.12);color:var(--accent);}
.check-list{margin-top:22px;}
.check-list li{
  position:relative;padding-left:28px;margin-bottom:14px;
  color:var(--ink-soft);font-size:15px;line-height:1.8;
}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:'✓';position:absolute;left:0;top:1px;
  width:18px;height:18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:11px;font-weight:700;color:var(--primary);
  background:rgba(74,124,116,.14);
}
.compare-col.is-accent .check-list li::before{color:var(--accent);background:rgba(194,112,63,.14);}

/* ============ 准备区 ============ */
.prepare-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:52px;align-items:center;}
.prepare-media img{width:100%;aspect-ratio:5/4;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--sh-1);}
.prepare-list li{
  position:relative;padding:18px 0 18px 30px;
  border-bottom:1px dashed var(--line);
  font-size:15.5px;color:var(--ink-soft);line-height:1.8;
}
.prepare-list li:last-child{border-bottom:0;}
.prepare-list li::before{
  content:'';position:absolute;left:0;top:26px;
  width:12px;height:12px;border-radius:4px;
  background:linear-gradient(135deg,var(--accent-soft),var(--primary-400));
}
.prepare-list strong{display:block;color:var(--ink);font-weight:700;font-size:16px;margin-bottom:2px;}
.mini-flow{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;
}
.mini-flow span{
  font-size:13.5px;color:var(--primary);
  padding:8px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);
}
.mini-flow span b{color:var(--accent);font-weight:700;}

/* ============ 数据带 ============ */
.stats-band{background:var(--primary);color:#fff;padding:76px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;}
.stat{border-top:1px solid rgba(255,255,255,.18);padding-top:22px;}
.stat-num{
  font-size:clamp(30px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;
  color:var(--accent-soft);line-height:1.15;
  font-variant-numeric:tabular-nums;
}
.stat-cap{font-size:14.5px;color:rgba(255,255,255,.76);margin-top:8px;line-height:1.7;}

/* ============ 场景卡片 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.scene-card:hover{border-color:var(--primary-400);transform:translateY(-4px);box-shadow:var(--sh-2);}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.scene-body{padding:24px 26px 28px;}
.scene-body p{color:var(--ink-soft);font-size:15px;line-height:1.8;margin-top:6px;}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);margin-top:8px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  position:relative;width:100%;text-align:left;
  padding:22px 46px 22px 18px;
  background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary-400);}
.faq-q::before{
  content:'';position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;
  background:var(--accent);opacity:0;transition:opacity .25s var(--ease);
}
.faq-q::after{
  content:'+';position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--ink-mute);
  transition:color .25s var(--ease),transform .3s var(--ease);
}
.faq-item.is-open .faq-q::before{opacity:1;}
.faq-item.is-open .faq-q::after{content:'−';color:var(--accent);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .38s var(--ease),opacity .3s var(--ease);}
.faq-item.is-open .faq-a{max-height:420px;opacity:1;}
.faq-a-inner{padding:0 46px 24px 18px;color:var(--ink-soft);font-size:15.5px;line-height:1.85;}
.faq-q:focus-visible{outline:2px solid var(--primary-400);outline-offset:-4px;}

/* ============ CTA ============ */
.cta-band{background:var(--primary);color:#fff;padding:84px 0;}
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:56px;align-items:start;}
.cta-band .h2{color:#fff;}
.cta-band .lead{color:rgba(255,255,255,.78);}
.cta-points{margin-top:26px;}
.cta-points li{
  position:relative;padding-left:26px;margin-bottom:12px;
  color:rgba(255,255,255,.82);font-size:15px;line-height:1.8;
}
.cta-points li::before{
  content:'';position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--accent-soft);
}
.form-card{
  background:#fff;border-radius:16px;padding:30px;
  box-shadow:0 24px 48px -22px rgba(0,0,0,.45);
  color:var(--ink);
}
.form-card h3{font-size:18px;font-weight:700;color:var(--primary);margin:0 0 6px;}
.form-card .form-hint{font-size:13.5px;color:var(--ink-mute);margin-bottom:20px;}
.field{display:block;margin-bottom:16px;}
.field label{display:block;font-size:13.5px;color:var(--ink-soft);margin-bottom:7px;font-weight:600;}
.field input,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-input);
  border:1px solid var(--line);background:#FCFBF9;
  font-size:15px;color:var(--ink);line-height:1.6;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.field textarea{resize:vertical;min-height:96px;}
.field input::placeholder,.field textarea::placeholder{color:#B3B8B5;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary-400);background:#fff;
  box-shadow:0 0 0 3px rgba(74,124,116,.16);
}
.form-card .btn{width:100%;}
.form-note{font-size:12.5px;color:var(--ink-mute);line-height:1.7;margin-top:14px;}
.form-note a{color:var(--primary-400);text-decoration:underline;text-underline-offset:2px;}
.form-msg{
  display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-input);
  background:rgba(63,125,90,.10);color:#2E6B48;font-size:14px;line-height:1.7;
}
.form-msg.is-visible{display:block;}

/* ============ 相关分类互链 ============ */
.links-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.link-card{
  display:block;text-decoration:none;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.link-card:hover{border-color:var(--primary-400);transform:translateY(-4px);box-shadow:var(--sh-2);}
.link-card h3{font-size:17px;font-weight:700;color:var(--primary);margin:0 0 8px;}
.link-card p{font-size:14px;color:var(--ink-soft);line-height:1.75;}
.link-card .arrow{display:inline-block;margin-top:14px;font-size:13.5px;color:var(--accent);font-weight:600;}

/* ============ 页脚 ============ */
.site-footer{background:#14211F;color:#C9D3D0;padding:66px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:34px;}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;
}
.site-footer .brand-mark{background:linear-gradient(135deg,var(--accent-soft) 0%,var(--primary-400) 100%);}
.site-footer h3{font-size:15px;font-weight:600;color:#fff;margin:0 0 14px;}
.site-footer p{color:#9FB0AC;font-size:14.5px;line-height:1.85;}
.footer-link{
  display:block;padding:6px 0;color:#C9D3D0;font-size:14.5px;text-decoration:none;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-link:hover{color:#fff;padding-left:4px;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13.5px;color:#8FA09C;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}
.fade-up{animation:fadeUp .6s var(--ease) both;}
.fade-up.d1{animation-delay:.08s;}
.fade-up.d2{animation-delay:.16s;}
.fade-up.d3{animation-delay:.24s;}
.fade-up.d4{animation-delay:.32s;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .hero{padding:126px 0 76px;}
  .hero-media{order:-1;}
  .hero-float{left:auto;right:12px;bottom:-16px;}
  .prepare-grid{grid-template-columns:minmax(0,1fr);gap:36px;}
  .cta-grid{grid-template-columns:minmax(0,1fr);gap:38px;}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .links-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:960px){
  .nav-links{
    position:absolute;top:calc(100% + 12px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:12px;margin-left:0;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--sh-2);
    display:none;
  }
  .nav-links.is-open{display:flex;}
  .nav-link{min-height:46px;padding:12px 16px;font-size:15px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
}
@media (max-width:820px){
  .steps{grid-template-columns:minmax(0,1fr);gap:0;}
  .steps-line{display:none;}
  .step{
    display:grid;grid-template-columns:34px minmax(0,1fr);gap:16px;align-items:start;
    padding:22px 0;border-bottom:1px dashed var(--line);
  }
  .step:last-child{border-bottom:0;}
  .step-num{margin-bottom:0;box-shadow:none;}
  .compare{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .stats-band{padding:56px 0;}
  .cta-band{padding:60px 0;}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .links-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:520px){
  .hero{padding:118px 0 62px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .hero-float{position:static;margin-top:16px;max-width:none;}
  .stats-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .faq-q{padding-right:40px;font-size:16px;}
  .faq-a-inner{padding-right:24px;}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1 !important;transform:none !important;}
}

/* roulang page: category4 */
:root{
    --pine-900:#162928;
    --pine-800:#1F3A38;
    --pine-600:#2F5A55;
    --pine-500:#4A7C74;
    --dawn-500:#C2703F;
    --dawn-300:#D89B6E;
    --bg:#F7F5F1;
    --surface:#FFFFFF;
    --surface-alt:#EFEBE4;
    --text:#141B1A;
    --text-sub:#5A6360;
    --text-mute:#8C918D;
    --border:#E2DCD3;
    --ok:#3F7D5A;
    --warn:#B4452F;
    --radius-card:14px;
    --radius-pic:12px;
    --radius-field:10px;
    --shadow-soft:0 1px 2px rgba(20,27,26,.04), 0 12px 32px -12px rgba(20,27,26,.10);
    --shadow-lift:0 18px 40px -16px rgba(20,27,26,.18);
    --ease:cubic-bezier(.22,1,.36,1);
    --nav-h:74px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  a:hover{color:var(--pine-600);}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-0.01em;font-weight:700;}
  p{margin:0;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .tabular{font-variant-numeric:tabular-nums;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    padding:14px 20px 0;
    transition:padding .25s var(--ease);
  }
  .nav-shell{
    max-width:1180px;margin:0 auto;
    display:flex;align-items:center;gap:18px;
    height:62px;padding:0 14px 0 20px;
    border-radius:999px;
    background:rgba(255,255,255,.72);
    border:1px solid rgba(226,220,211,.9);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    box-shadow:0 1px 2px rgba(20,27,26,.04);
    transition:background .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .site-header.is-scrolled .nav-shell{
    background:rgba(255,255,255,.94);
    border-color:var(--border);
    box-shadow:0 10px 30px -16px rgba(20,27,26,.28);
  }
  .brand{
    display:inline-flex;align-items:center;gap:10px;
    font-weight:800;font-size:17px;letter-spacing:-0.02em;color:var(--pine-800);
    white-space:nowrap;
  }
  .brand:hover{color:var(--pine-600);}
  .brand-mark{
    width:16px;height:16px;flex:0 0 16px;border-radius:5px;
    background:linear-gradient(135deg,var(--pine-600) 0%,var(--pine-500) 55%,var(--dawn-500) 100%);
    transform:rotate(45deg);
  }
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
  .nav-link{
    display:inline-flex;align-items:center;height:38px;padding:0 14px;
    border-radius:999px;font-size:14.5px;color:var(--text-sub);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .nav-link:hover{background:var(--sand-200);color:var(--pine-800);}
  .nav-link.is-active{background:var(--pine-800);color:#fff;}
  .nav-link:focus-visible{outline:2px solid var(--dawn-500);outline-offset:2px;}
  .nav-cta{margin-left:6px;}
  .nav-toggle{
    display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:999px;
    background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  }
  .nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--pine-800);transition:transform .25s var(--ease),opacity .2s var(--ease);}
  .nav-toggle.is-open span:first-child{transform:translateY(3.5px) rotate(45deg);}
  .nav-toggle.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .btn:focus-visible{outline:2px solid var(--pine-600);outline-offset:2px;}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-primary{background:var(--dawn-500);color:#fff;box-shadow:0 10px 24px -14px rgba(194,112,63,.85);}
  .btn-primary:hover{background:#AD6034;color:#fff;transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:#fff;color:var(--pine-800);border-color:var(--border);}
  .btn-ghost:hover{border-color:var(--pine-500);color:var(--pine-800);transform:translateY(-1px);}
  .btn-ghost:active{transform:translateY(0);}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--pine-600);
    border-bottom:1px solid transparent;padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .btn-link:hover{color:var(--dawn-500);border-color:var(--dawn-500);}
  .btn-link::after{content:"→";font-size:15px;}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:28px;padding:0 12px;border-radius:999px;
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
    background:var(--sand-200);color:var(--pine-800);
  }
  .badge-dawn{background:rgba(194,112,63,.12);color:var(--dawn-700);}
  .badge-ok{background:rgba(63,125,90,.12);color:var(--ok);}
  .tag{
    display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:999px;
    border:1px solid var(--border);background:#fff;font-size:13px;color:var(--text-sub);
  }

  /* ---------- 首屏 ---------- */
  .page-hero{padding:calc(var(--nav-h) + 56px) 0 74px;position:relative;overflow:hidden;}
  .page-hero::before{
    content:"";position:absolute;inset:0 0 auto 0;height:100%;
    background:radial-gradient(720px 320px at 12% 0%,rgba(74,124,116,.14),transparent 70%),
               radial-gradient(540px 280px at 92% 12%,rgba(194,112,63,.10),transparent 72%);
    pointer-events:none;
  }
  .page-hero .container{position:relative;}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-mute);margin-bottom:18px;flex-wrap:wrap;}
  .breadcrumb a{color:var(--text-sub);}
  .breadcrumb a:hover{color:var(--dawn-500);}
  .breadcrumb span.sep{color:var(--sand-300);}
  h1.hero-title{
    font-size:clamp(32px,5vw,54px);font-weight:800;letter-spacing:-0.02em;line-height:1.16;
    color:var(--pine-800);
  }
  .hero-lead{margin-top:20px;font-size:17px;color:var(--text-sub);max-width:620px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-figure{position:relative;}
  .hero-figure img{
    width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--radius-pic);
    border:1px solid var(--border);
    box-shadow:var(--shadow-soft);
  }
  .float-card{
    position:absolute;left:-18px;bottom:22px;
    background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
    padding:14px 18px;box-shadow:var(--shadow-soft);min-width:186px;
  }
  .float-card b{display:block;font-size:22px;color:var(--pine-800);font-variant-numeric:tabular-nums;line-height:1.3;}
  .float-card span{font-size:12.5px;color:var(--text-mute);}

  /* ---------- 通用板块 ---------- */
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .section-alt{background:var(--surface-alt);}
  .section-white{background:var(--surface);}
  .section-head{max-width:720px;}
  .section-head .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
    color:var(--dawn-500);text-transform:uppercase;margin-bottom:14px;
  }
  .section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--dawn-500);border-radius:2px;}
  h2.section-title{font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--pine-800);letter-spacing:-0.02em;}
  .section-sub{margin-top:14px;color:var(--text-sub);font-size:16px;}

  /* ---------- 状态条 ---------- */
  .status-band{
    background:var(--pine-800);color:#fff;border-radius:var(--radius-card);
    padding:22px 26px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;
    box-shadow:var(--shadow-soft);
  }
  .status-dot{width:10px;height:10px;border-radius:50%;background:#5FB98A;box-shadow:0 0 0 4px rgba(95,185,138,.22);flex:0 0 10px;animation:pulse 2.4s infinite;}
  @keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(95,185,138,.22);}50%{box-shadow:0 0 0 9px rgba(95,185,138,.06);}}
  .status-band p{font-size:14.5px;color:rgba(255,255,255,.86);}
  .status-band b{font-size:15.5px;color:#fff;font-weight:700;}
  .status-metrics{margin-left:auto;display:flex;gap:30px;flex-wrap:wrap;}
  .status-metrics div span{display:block;font-size:12.5px;color:rgba(255,255,255,.62);}
  .status-metrics div b{display:block;font-size:19px;font-variant-numeric:tabular-nums;color:var(--dawn-300);}

  /* ---------- FAQ 分栏 ---------- */
  .faq-layout{display:grid;grid-template-columns:1.55fr .85fr;gap:48px;align-items:start;}
  .faq-list{border-top:1px solid var(--border);}
  .faq-item{border-bottom:1px solid var(--border);}
  .faq-q{
    width:100%;display:flex;align-items:flex-start;gap:16px;text-align:left;
    padding:24px 4px;background:none;border:0;cursor:pointer;
    font-size:17.5px;font-weight:700;color:var(--pine-800);line-height:1.55;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--dawn-500);}
  .faq-q:focus-visible{outline:2px solid var(--pine-600);outline-offset:3px;border-radius:6px;}
  .faq-q .idx{
    flex:0 0 auto;font-size:13px;font-weight:700;color:var(--dawn-500);
    font-variant-numeric:tabular-nums;padding-top:4px;letter-spacing:.04em;
  }
  .faq-q .arrow{
    margin-left:auto;flex:0 0 auto;width:22px;height:22px;border-radius:50%;
    border:1px solid var(--border);position:relative;transition:transform .3s var(--ease),border-color .2s var(--ease);
  }
  .faq-q .arrow::before,.faq-q .arrow::after{
    content:"";position:absolute;top:50%;left:50%;background:var(--pine-600);border-radius:2px;
    transform:translate(-50%,-50%);
  }
  .faq-q .arrow::before{width:9px;height:1.6px;}
  .faq-q .arrow::after{width:1.6px;height:9px;transition:opacity .25s var(--ease);}
  .faq-item.is-open .faq-q{color:var(--dawn-500);}
  .faq-item.is-open .faq-q .arrow{border-color:var(--dawn-500);transform:rotate(180deg);}
  .faq-item.is-open .faq-q .arrow::before{background:var(--dawn-500);}
  .faq-item.is-open .faq-q .arrow::after{opacity:0;background:var(--dawn-500);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease);}
  .faq-a-inner{
    padding:0 4px 26px 38px;color:var(--text-sub);font-size:15.5px;line-height:1.85;
    border-left:2px solid transparent;
  }
  .faq-item.is-open .faq-a-inner{border-left-color:var(--dawn-300);padding-left:22px;margin-left:16px;}
  .faq-a-inner ul{margin:12px 0 0;padding:0;list-style:none;}
  .faq-a-inner li{position:relative;padding-left:18px;margin-bottom:8px;}
  .faq-a-inner li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--dawn-300);transform:rotate(45deg);}

  /* ---------- 侧栏联系卡 ---------- */
  .side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
  .side-card{
    background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
    padding:28px;box-shadow:var(--shadow-soft);
  }
  .side-card h3{font-size:19px;color:var(--pine-800);margin-bottom:8px;}
  .side-card p{font-size:14.5px;color:var(--text-sub);}
  .side-list{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:14px;}
  .side-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text-sub);}
  .side-list .dot{width:8px;height:8px;border-radius:50%;background:var(--dawn-500);flex:0 0 8px;margin-top:9px;}
  .side-card .btn{width:100%;margin-top:22px;}
  .side-note{font-size:12.5px;color:var(--text-mute);margin-top:14px;line-height:1.7;}
  .side-dark{background:var(--pine-800);border-color:var(--pine-800);color:#fff;}
  .side-dark h3{color:#fff;}
  .side-dark p,.side-dark .side-list li{color:rgba(255,255,255,.78);}
  .side-dark .side-list .dot{background:var(--dawn-300);}

  /* ---------- 排查流程 ---------- */
  .flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;position:relative;}
  .flow-step{padding:0 26px 0 0;position:relative;}
  .flow-step:not(:last-child)::after{
    content:"";position:absolute;top:15px;right:8px;left:44px;height:1px;background:var(--border);
  }
  .flow-step .num{
    width:32px;height:32px;border-radius:50%;background:#fff;border:1px solid var(--dawn-300);
    color:var(--dawn-500);font-size:13.5px;font-weight:800;display:flex;align-items:center;justify-content:center;
    position:relative;z-index:1;font-variant-numeric:tabular-nums;
  }
  .flow-step h3{margin-top:18px;font-size:17px;color:var(--pine-800);}
  .flow-step p{margin-top:10px;font-size:14.5px;color:var(--text-sub);}

  /* ---------- 数据带 ---------- */
  .stat-band{background:var(--pine-800);color:#fff;padding:76px 0;}
  .stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:34px;}
  .stat-cell{padding-top:20px;border-top:1px solid rgba(255,255,255,.16);}
  .stat-cell b{display:block;font-size:clamp(30px,3.4vw,42px);font-weight:800;color:var(--dawn-300);font-variant-numeric:tabular-nums;line-height:1.15;}
  .stat-cell span{display:block;margin-top:8px;font-size:14px;color:rgba(255,255,255,.7);}

  /* ---------- 相关分类互链 ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}
  .rel-card{
    display:block;background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
    padding:26px;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  }
  .rel-card:hover{transform:translateY(-4px);border-color:var(--pine-500);box-shadow:var(--shadow-lift);}
  .rel-card h3{font-size:18px;color:var(--pine-800);}
  .rel-card p{margin-top:10px;font-size:14.5px;color:var(--text-sub);}
  .rel-card .go{margin-top:16px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--dawn-500);}

  /* ---------- CTA / 表单 ---------- */
  .cta-band{background:var(--pine-800);color:#fff;padding:80px 0;}
  .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
  .cta-grid h2{font-size:clamp(26px,3.2vw,36px);color:#fff;font-weight:800;letter-spacing:-0.02em;}
  .cta-grid .cta-desc{margin-top:16px;color:rgba(255,255,255,.76);font-size:16px;}
  .cta-facts{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-direction:column;gap:12px;}
  .cta-facts li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.8);}
  .cta-facts li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--dawn-300);margin-top:10px;flex:0 0 7px;}
  .lead-form{background:#fff;border-radius:16px;padding:30px;box-shadow:var(--shadow-lift);color:var(--text);}
  .lead-form h3{font-size:19px;color:var(--pine-800);}
  .field{margin-top:16px;}
  .field label{display:block;font-size:13.5px;font-weight:600;color:var(--text-sub);margin-bottom:7px;}
  .field input,.field textarea,.field select{
    width:100%;border:1px solid var(--border);border-radius:var(--radius-field);
    padding:12px 14px;font-size:15px;font-family:inherit;color:var(--text);background:var(--sand-50);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .field textarea{min-height:96px;resize:vertical;}
  .field input:focus,.field textarea:focus,.field select:focus{
    outline:none;border-color:var(--pine-500);background:#fff;box-shadow:0 0 0 3px rgba(74,124,116,.16);
  }
  .form-foot{display:flex;align-items:center;gap:14px;margin-top:22px;flex-wrap:wrap;}
  .form-hint{font-size:12.5px;color:var(--text-mute);line-height:1.7;}
  .form-msg{margin-top:14px;font-size:14px;color:var(--ok);display:none;}
  .form-msg.is-show{display:block;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#12211F;color:rgba(255,255,255,.72);padding:64px 0 28px;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
  .footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:-0.02em;margin-bottom:16px;}
  .site-footer h3{font-size:14px;color:#fff;letter-spacing:.04em;margin-bottom:16px;font-weight:700;}
  .site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);}
  .footer-link{display:block;font-size:14px;color:rgba(255,255,255,.7);padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);}
  .footer-link:hover{color:var(--dawn-300);transform:translateX(2px);}
  .footer-bottom{
    margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5);
  }

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
  .reveal.is-visible{opacity:1;transform:none;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1100px){
    .faq-layout{grid-template-columns:1.4fr .9fr;gap:34px;}
    .nav-link{padding:0 11px;font-size:14px;}
  }
  @media (max-width:1024px){
    .site-header{padding:10px 14px 0;}
    .nav-toggle{display:flex;}
    .nav-links{
      position:absolute;top:74px;left:14px;right:14px;
      flex-direction:column;align-items:stretch;gap:4px;
      background:#fff;border:1px solid var(--border);border-radius:20px;
      padding:12px;box-shadow:var(--shadow-lift);
      display:none;margin-left:0;
    }
    .nav-links.is-open{display:flex;}
    .nav-link{height:46px;justify-content:flex-start;border-radius:12px;font-size:15px;}
    .nav-cta{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-figure img{aspect-ratio:16/10;}
    .float-card{left:14px;bottom:14px;}
    .flow-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
    .flow-step:not(:last-child)::after{display:none;}
    .stat-grid{grid-template-columns:repeat(2,1fr);}
    .cta-grid{grid-template-columns:1fr;gap:36px;}
    .rel-grid{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .faq-layout{grid-template-columns:1fr;}
    .side-stack{position:static;}
  }
  @media (max-width:640px){
    .container{padding:0 20px;}
    .section{padding:60px 0;}
    .section-tight{padding:48px 0;}
    .page-hero{padding:calc(var(--nav-h) + 34px) 0 52px;}
    .hero-lead{font-size:15.5px;}
    .hero-actions .btn{width:100%;}
    .flow-grid{grid-template-columns:1fr;gap:28px;}
    .stat-band{padding:56px 0;}
    .stat-grid{grid-template-columns:1fr 1fr;gap:26px 18px;}
    .rel-grid{grid-template-columns:1fr;}
    .cta-band{padding:56px 0;}
    .lead-form{padding:22px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .status-metrics{margin-left:0;gap:22px;}
    .faq-q{font-size:16px;padding:20px 2px;}
    .faq-item.is-open .faq-a-inner{margin-left:10px;padding-left:16px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: category5 */
:root{
  --ink:#1F3A38;
  --ink-600:#2F5A55;
  --ink-400:#4A7C74;
  --ink-900:#162B29;
  --sun:#C2703F;
  --sun-300:#D89B6E;
  --bg:#F7F5F1;
  --white:#FFFFFF;
  --sand:#EFEBE4;
  --text:#141B1A;
  --text-2:#5A6360;
  --text-3:#8C918D;
  --line:#E2DCD3;
  --ok:#3F7D5A;
  --warn:#B4452F;
  --r-card:14px;
  --r-img:12px;
  --r-field:10px;
  --r-pill:999px;
  --shadow-soft:0 1px 2px rgba(20,27,26,.04), 0 12px 32px -12px rgba(20,27,26,.10);
  --shadow-lift:0 1px 2px rgba(20,27,26,.04), 0 18px 40px -16px rgba(20,27,26,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --header-h:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei","Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--ink-600);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--ink-600);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.section-alt{background:var(--white);}
.section-sand{background:var(--sand);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--sun);font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--sun);border-radius:2px;}
h1{font-size:clamp(32px,5vw,58px);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
h2{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
h3{font-size:20px;font-weight:700;line-height:1.4;}
.lead{font-size:17px;color:var(--text-2);line-height:1.85;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16.5px;line-height:1.85;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:14px 20px;
  transition:padding .25s var(--ease);
}
.nav-shell{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(226,220,211,.9);
  box-shadow:0 1px 2px rgba(20,27,26,.03);
  transition:background .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.94);
  border-color:var(--line);
  box-shadow:var(--shadow-soft);
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:22px;height:22px;border-radius:7px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--ink) 0%,var(--ink-400) 62%,var(--sun) 100%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:var(--r-pill);
  font-size:14.5px;color:var(--text-2);font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--ink);background:rgba(31,58,56,.06);}
.nav-link.is-active{color:var(--ink);font-weight:700;background:rgba(31,58,56,.08);}
.nav-cta{margin-left:10px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);background:rgba(255,255,255,.9);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  font-weight:600;font-size:15px;
  padding:13px 26px;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  border:1px solid transparent;
  will-change:transform;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-primary{background:var(--sun);color:#fff;box-shadow:0 8px 20px -10px rgba(194,112,63,.7);}
.btn-primary:hover{background:#AD5F31;color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--ink-400);color:var(--ink);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-quiet{color:var(--ink);padding:8px 0;font-weight:600;font-size:15px;}
.btn-quiet::after{content:"→";margin-left:6px;transition:transform .22s var(--ease);}
.btn-quiet:hover::after{transform:translateX(4px);}
.btn-on-dark{background:#fff;color:var(--ink);}
.btn-on-dark:hover{background:#F3EFE9;color:var(--ink);transform:translateY(-1px);}
.btn-outline-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.btn-outline-dark:hover{border-color:#fff;color:#fff;transform:translateY(-1px);}

/* ---------- 标签 / 徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(31,58,56,.07);color:var(--ink-600);
}
.tag-sun{background:rgba(194,112,63,.12);color:#9C5729;}
.tag-ok{background:rgba(63,125,90,.12);color:var(--ok);}

/* ---------- 页头 Hero ---------- */
.page-hero{padding:calc(var(--header-h) + 56px) 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:26px;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--ink-600);}
.breadcrumb span.sep{color:#C6BFB4;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-copy h1{margin-bottom:20px;}
.hero-copy .lead{max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.hero-visual{position:relative;}
.hero-visual .frame{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-soft);background:var(--white);
}
.hero-visual .frame img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 20px;box-shadow:var(--shadow-lift);min-width:196px;
}
.hero-float .k{font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-.02em;}
.hero-float .v{font-size:12.5px;color:var(--text-3);margin-top:2px;}

/* ---------- 实时状态条 ---------- */
.status-band{
  margin-top:64px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-soft);
  display:grid;grid-template-columns:repeat(4,1fr);
}
.status-item{padding:22px 26px;border-right:1px solid var(--line);}
.status-item:last-child{border-right:0;}
.status-item .label{font-size:12.5px;color:var(--text-3);display:flex;align-items:center;gap:7px;}
.status-item .label i{width:7px;height:7px;border-radius:50%;background:var(--ok);display:inline-block;box-shadow:0 0 0 3px rgba(63,125,90,.14);}
.status-item .value{font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-.02em;margin-top:6px;}
.status-item .value small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:2px;}

/* ---------- 图文交替错落 ---------- */
.feat-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:56px 0;
  border-top:1px solid var(--line);
}
.feat-row:first-of-type{border-top:0;padding-top:8px;}
.feat-row.reverse .feat-media{order:2;}
.feat-media{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  background:var(--white);box-shadow:var(--shadow-soft);
}
.feat-media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.feat-row.shift-up .feat-media{transform:translateY(-14px);}
.feat-row.shift-down .feat-media{transform:translateY(16px);}
.feat-body h3{margin:14px 0 12px;font-size:22px;}
.feat-body p{color:var(--text-2);}
.feat-list{margin-top:22px;display:grid;gap:12px;}
.feat-list li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.feat-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:9px;border-radius:2px;
  background:var(--sun-300);transform:rotate(45deg);
}
.feat-body .btn-quiet{margin-top:22px;}

/* ---------- 场景分组卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.scene-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);border-color:var(--ink-400);box-shadow:var(--shadow-lift);}
.scene-card .idx{font-size:12.5px;font-weight:700;color:var(--sun);letter-spacing:.1em;}
.scene-card h3{font-size:17.5px;margin:12px 0 10px;}
.scene-card p{font-size:14.5px;color:var(--text-2);line-height:1.75;}

/* ---------- 时间表 ---------- */
.roadmap{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);}
.step{padding:28px 24px 8px;position:relative;}
.step::before{
  content:"";position:absolute;top:-6px;left:24px;
  width:11px;height:11px;border-radius:50%;background:var(--white);
  border:2px solid var(--sun);
}
.step .step-no{font-size:12.5px;font-weight:700;color:var(--text-3);letter-spacing:.14em;}
.step h3{font-size:18px;margin:10px 0 8px;}
.step p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.step .dur{margin-top:14px;font-size:12.5px;color:var(--ink-600);font-weight:600;}

/* ---------- 数据带 ---------- */
.metric-band{background:var(--ink-900);color:#fff;padding:78px 0;}
.metric-band .head{max-width:640px;margin-bottom:44px;}
.metric-band .head h2{color:#fff;}
.metric-band .head p{color:rgba(255,255,255,.72);margin-top:12px;}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.metric{padding:0 26px;border-left:1px solid rgba(255,255,255,.16);}
.metric:first-child{border-left:0;padding-left:0;}
.metric .figure{font-size:clamp(30px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;color:var(--sun-300);}
.metric .cap{margin-top:8px;font-size:14px;color:rgba(255,255,255,.7);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.faq-aside{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-soft);
}
.faq-aside h3{font-size:19px;margin-bottom:12px;}
.faq-aside p{font-size:14.5px;color:var(--text-2);}
.faq-aside .divider{height:1px;background:var(--line);margin:22px 0;}
.faq-aside .mini{font-size:13px;color:var(--text-3);}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  text-align:left;padding:22px 0;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink-600);}
.faq-q .ico{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);position:relative;margin-top:4px;
  transition:border-color .25s var(--ease),background .25s var(--ease);
}
.faq-q .ico::before,.faq-q .ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink-600);
  transform:translate(-50%,-50%);transition:opacity .25s var(--ease);
}
.faq-q .ico::before{width:10px;height:1.6px;}
.faq-q .ico::after{width:1.6px;height:10px;}
.faq-item.is-open .faq-q{color:var(--ink);}
.faq-item.is-open .faq-q .ico{border-color:var(--sun);background:rgba(194,112,63,.1);}
.faq-item.is-open .faq-q .ico::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a-inner{
  position:relative;padding:0 0 24px 18px;color:var(--text-2);font-size:15.5px;line-height:1.85;
}
.faq-a-inner::before{
  content:"";position:absolute;left:0;top:4px;bottom:26px;width:3px;border-radius:3px;background:var(--sun);
}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;padding:88px 0;}
.cta-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.cta-inner h2{color:#fff;}
.cta-inner p{color:rgba(255,255,255,.76);margin-top:14px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-note{margin-top:22px;font-size:13px;color:rgba(255,255,255,.6);}
.cta-note a{color:rgba(255,255,255,.82);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 互链 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.related-card{
  display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);border-color:var(--ink-400);box-shadow:var(--shadow-lift);color:var(--text);}
.related-card h3{font-size:17px;margin-bottom:8px;}
.related-card p{font-size:14px;color:var(--text-2);line-height:1.72;}
.related-card .more{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:600;color:var(--sun);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.74);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:#fff;margin-bottom:14px;}
.footer-brand .brand-mark{background:linear-gradient(135deg,#fff 0%,var(--sun-300) 100%);}
.site-footer h3{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.site-footer p{font-size:14px;line-height:1.8;}
.footer-link{display:block;font-size:14px;color:rgba(255,255,255,.72);padding:6px 0;transition:color .2s var(--ease);}
.footer-link:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-float{left:16px;bottom:-18px;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .roadmap{grid-template-columns:repeat(2,1fr);}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .metric:nth-child(3){border-left:0;padding-left:0;}
  .faq-wrap{grid-template-columns:1fr;gap:36px;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{justify-content:flex-start;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .feat-row{gap:36px;}
  .feat-row.shift-up .feat-media,.feat-row.shift-down .feat-media{transform:none;}
}
@media (max-width:860px){
  .nav-toggle{display:flex;margin-left:auto;}
  .nav-cta{display:none;}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(255,255,255,.98);
    border:1px solid var(--line);border-radius:18px;
    box-shadow:var(--shadow-lift);
    padding:12px;
    display:none;
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  }
  .nav-links.is-open{display:flex;}
  .nav-link{padding:13px 16px;font-size:15.5px;min-height:44px;}
  .nav-shell{position:relative;}
  .status-band{grid-template-columns:repeat(2,1fr);}
  .status-item:nth-child(2){border-right:0;}
  .status-item:nth-child(1),.status-item:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:60px 0;}
  .section-sm{padding:44px 0;}
  .page-hero{padding-top:calc(var(--header-h) + 34px);}
  .feat-row{grid-template-columns:1fr;gap:26px;padding:38px 0;}
  .feat-row.reverse .feat-media{order:0;}
  .scene-grid{grid-template-columns:1fr;}
  .roadmap{grid-template-columns:1fr;}
  .step{padding:24px 0 4px;}
  .step::before{left:0;}
  .metric{padding:0;border-left:0;border-top:1px solid rgba(255,255,255,.16);padding-top:22px;}
  .metric:first-child{border-top:0;padding-top:0;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .hero-actions .btn{width:100%;}
  .metric-band{padding:56px 0;}
  .cta-band{padding:60px 0;}
}
@media (max-width:520px){
  .status-band{grid-template-columns:1fr;}
  .status-item{border-right:0;border-bottom:1px solid var(--line);}
  .status-item:last-child{border-bottom:0;}
  h1{letter-spacing:-.01em;}
  .hero-float{position:static;margin-top:16px;box-shadow:var(--shadow-soft);}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}