/* roulang page: index */
:root{
    --c-ink:#0D3B36;
    --c-ink-2:#155046;
    --c-ink-3:#1E6A5C;
    --c-accent:#FF7A2F;
    --c-accent-h:#E3631B;
    --c-accent-p:#C9520F;
    --c-mint:#2CC5A8;
    --c-bg:#F5F7F4;
    --c-surface:#FFFFFF;
    --c-dark:#082924;
    --t-1:#12211F;
    --t-2:#4A5B58;
    --t-3:#7C8B88;
    --c-line:#E2E8E4;
    --sh-1:0 1px 2px rgba(13,59,54,.05), 0 8px 24px -14px rgba(13,59,54,.18);
    --sh-2:0 2px 4px rgba(13,59,54,.06), 0 18px 36px -18px rgba(13,59,54,.24);
    --r-card:14px;
    --r-btn:10px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:72px;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    background:var(--c-bg);
    color:var(--t-1);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
  .container{max-width:1200px;margin:0 auto;padding:0 24px;}
  .num{font-variant-numeric:tabular-nums;}

  /* ============ 侧栏外壳 ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:248px;
    background:var(--c-ink);
    display:flex;flex-direction:column;
    padding:20px 14px 18px;
    z-index:70;
    transition:width .2s ease-out;
  }
  .sidebar::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
    background-size:26px 26px;opacity:.6;
  }
  .sidebar-logo{position:relative;z-index:1;display:flex;align-items:center;gap:10px;padding:4px 8px 22px;}
  .logo-mark{
    width:40px;height:40px;flex:0 0 40px;border-radius:10px;
    background:linear-gradient(140deg,var(--c-accent),#FF9A57);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-weight:700;font-size:19px;letter-spacing:.5px;
    box-shadow:0 8px 18px -10px rgba(255,122,47,.9);
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.25;white-space:nowrap;overflow:hidden;}
  .logo-title{font-size:16px;font-weight:700;color:#fff;letter-spacing:.6px;}
  .logo-sub{font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.4px;}
  .sidebar-nav{position:relative;z-index:1;display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;border-radius:10px;
    color:rgba(232,241,238,.78);font-size:14.5px;position:relative;
    transition:background .16s ease-out,color .16s ease-out;
  }
  .nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 18px;}
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
  .nav-item.is-active{background:rgba(255,255,255,.08);color:#fff;font-weight:600;}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--c-accent);
  }
  .sidebar-foot{position:relative;z-index:1;margin-top:auto;display:flex;flex-direction:column;gap:12px;}
  .collapse-btn{
    height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.14);
    background:rgba(255,255,255,.04);color:rgba(255,255,255,.7);
    display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;font-size:13px;
    transition:background .16s ease-out,color .16s ease-out;
  }
  .collapse-btn:hover{background:rgba(255,255,255,.1);color:#fff;}
  .sidebar-contact{font-size:12px;color:rgba(255,255,255,.5);line-height:1.7;padding:0 6px;}
  body.is-collapsed .sidebar{width:76px;}
  body.is-collapsed .logo-text,
  body.is-collapsed .nav-item span,
  body.is-collapsed .sidebar-contact,
  body.is-collapsed .collapse-btn span{display:none;}
  body.is-collapsed .nav-item{justify-content:center;padding:0;}
  body.is-collapsed .collapse-btn{padding:0;}

  /* ============ 主内容偏移 ============ */
  .main{margin-left:248px;transition:margin-left .2s ease-out;min-height:100vh;display:flex;flex-direction:column;}
  body.is-collapsed .main{margin-left:76px;}

  /* ============ 移动端顶栏与抽屉 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
    background:var(--c-ink);align-items:center;justify-content:space-between;
    padding:0 14px;box-shadow:0 6px 18px -12px rgba(8,41,36,.9);
  }
  .mobile-bar .logo-inline{display:flex;align-items:baseline;gap:6px;color:#fff;font-weight:700;font-size:15px;letter-spacing:.5px;}
  .mobile-bar .logo-inline span{font-size:11px;font-weight:400;color:rgba(255,255,255,.6);}
  .icon-btn{
    width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
    background:rgba(255,255,255,.05);color:#fff;display:flex;align-items:center;justify-content:center;
    cursor:pointer;transition:background .16s ease-out;
  }
  .icon-btn:hover{background:rgba(255,255,255,.14);}
  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;z-index:90;
    background:var(--c-ink);padding:20px 16px;display:flex;flex-direction:column;gap:6px;
    transform:translateX(-102%);transition:transform .24s ease-out;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(8,41,36,.55);z-index:85;opacity:0;visibility:hidden;
    transition:opacity .2s ease-out,visibility .2s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}

  /* ============ 按钮 / 徽章 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .16s ease-out,color .16s ease-out,border-color .16s ease-out,box-shadow .16s ease-out,transform .16s ease-out;
  }
  .btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,122,47,.85);}
  .btn-accent:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-accent:active{background:var(--c-accent-p);transform:translateY(0);}
  .btn-ghost{background:var(--c-surface);color:var(--c-ink);border-color:var(--c-line);}
  .btn-ghost:hover{border-color:var(--c-ink);background:rgba(13,59,54,.06);}
  .btn-dark{background:var(--c-ink);color:#fff;}
  .btn-dark:hover{background:var(--c-ink-2);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;background:rgba(44,197,168,.14);color:#1B7F6C;white-space:nowrap;
  }
  .badge-accent{background:rgba(255,122,47,.14);color:var(--c-accent-p);}
  .badge-ink{background:rgba(13,59,54,.08);color:var(--c-ink-2);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
    background:rgba(13,59,54,.07);color:var(--c-ink-2);font-size:12.5px;font-weight:600;letter-spacing:.4px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);}

  /* ============ 版块节奏 ============ */
  .section{padding:84px 0;}
  .section-tight{padding:64px 0;}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
  .sec-title{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.3px;}
  .sec-desc{margin-top:10px;color:var(--t-2);font-size:15px;max-width:640px;}
  .sec-link{color:var(--c-ink-3);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
  .sec-link i{transition:transform .16s ease-out;}
  .sec-link:hover{color:var(--c-accent-h);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
  .sec-link:hover i{transform:translateX(4px);}

  /* ============ Hero ============ */
  .hero{padding:72px 0 40px;}
  .hero-title{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.6px;margin-top:18px;}
  .hero-title em{font-style:normal;color:var(--c-ink-3);}
  .hero-sub{margin-top:18px;font-size:16.5px;color:var(--t-2);max-width:600px;}
  .hero-cta{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap;}
  .hero-metrics{display:flex;align-items:center;gap:0;margin-top:34px;flex-wrap:wrap;}
  .hero-metrics .hm{padding:0 22px;border-left:1px solid var(--c-line);}
  .hero-metrics .hm:first-child{padding-left:0;border-left:0;}
  .hm-num{font-size:22px;font-weight:700;color:var(--c-ink);letter-spacing:-.4px;}
  .hm-lab{font-size:12.5px;color:var(--t-3);}
  .hero-visual{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;background:#DCE5E0;}
  .hero-visual img{width:100%;height:100%;object-fit:cover;}
  .hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,59,54,0) 45%,rgba(13,59,54,.42));}
  .hero-float{
    position:absolute;right:18px;bottom:18px;z-index:2;
    background:rgba(255,255,255,.94);border-radius:12px;padding:12px 16px;
    box-shadow:var(--sh-2);display:flex;flex-direction:column;gap:2px;backdrop-filter:blur(2px);
  }
  .float-num{font-size:24px;font-weight:700;color:var(--c-ink);line-height:1.2;}
  .float-num span{font-size:13px;font-weight:600;margin-left:2px;}
  .float-label{font-size:12px;color:var(--t-3);}

  /* ============ 指标看板 ============ */
  .metric-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:22px;box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out;
  }
  .metric-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
  .metric-num{font-size:38px;font-weight:700;line-height:1.1;color:var(--c-ink);letter-spacing:-1px;}
  .metric-num small{font-size:14px;font-weight:600;color:var(--t-3);margin-left:4px;letter-spacing:0;}
  .metric-lab{margin-top:6px;font-size:13px;color:var(--t-2);}
  .metric-bar{margin-top:16px;height:4px;border-radius:99px;background:#E9EFEB;overflow:hidden;}
  .metric-bar i{display:block;height:100%;border-radius:99px;background:var(--c-mint);}
  .metric-bar i.acc{background:linear-gradient(90deg,var(--c-accent),#FFA46E);}

  /* ============ Bento 服务矩阵 ============ */
  .bento-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:26px;box-shadow:var(--sh-1);display:flex;flex-direction:column;gap:12px;
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .bento-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,106,92,.35);}
  .bento-card:hover .bento-link i{transform:translateX(4px);}
  .bento-icon{
    width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;
    background:rgba(13,59,54,.07);color:var(--c-ink-2);font-size:17px;
  }
  .bento-card h3{font-size:20px;line-height:1.5;font-weight:700;}
  .bento-card p{font-size:14.5px;color:var(--t-2);line-height:1.75;}
  .bento-link{margin-top:auto;color:var(--c-ink-3);font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
  .bento-link i{transition:transform .16s ease-out;}
  .bento-media{position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--c-line);min-height:260px;box-shadow:var(--sh-1);}
  .bento-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
  .bento-media .bm-cap{
    position:absolute;left:0;right:0;bottom:0;padding:22px;color:#fff;
    background:linear-gradient(180deg,rgba(8,41,36,0),rgba(8,41,36,.86));
  }
  .bento-media .bm-cap h3{font-size:20px;font-weight:700;}
  .bento-media .bm-cap p{font-size:13.5px;color:rgba(255,255,255,.82);margin-top:6px;}
  .check-list{display:flex;flex-direction:column;gap:10px;margin-top:4px;}
  .check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--t-2);line-height:1.7;}
  .check-list li i{color:var(--c-mint);font-size:14px;margin-top:5px;flex:0 0 14px;}

  /* ============ 资讯卡片 ============ */
  .post-card{
    display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,106,92,.3);}
  .post-thumb{aspect-ratio:16/9;overflow:hidden;background:#E7EDEA;position:relative;}
  .post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out;}
  .post-card:hover .post-thumb img{transform:scale(1.04);}
  .post-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);color:var(--c-ink-2);box-shadow:0 4px 12px -6px rgba(8,41,36,.5);}
  .post-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .post-title{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .16s ease-out;}
  .post-card:hover .post-title{color:var(--c-ink-3);}
  .post-sum{font-size:14px;color:var(--t-2);line-height:1.72;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
  .post-meta{
    margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
    display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--t-3);
  }
  .post-meta i{color:var(--c-ink-3);}
  .empty-state{
    grid-column:1/-1;text-align:center;padding:56px 20px;border:1px dashed var(--c-line);
    border-radius:var(--r-card);background:var(--c-surface);
  }
  .empty-state i{font-size:32px;color:#BCCBC6;}
  .empty-state p{margin-top:14px;color:var(--t-3);font-size:14.5px;}
  .empty-state .btn{margin-top:18px;}

  /* ============ 结果对比 ============ */
  .compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .compare-col{border-radius:var(--r-card);padding:28px;border:1px solid var(--c-line);}
  .compare-col.old{background:#EDF1EE;}
  .compare-col.new{background:rgba(44,197,168,.09);border-color:rgba(44,197,168,.38);}
  .compare-col h3{font-size:19px;font-weight:700;display:flex;align-items:center;gap:10px;}
  .compare-list{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
  .compare-list li{display:flex;gap:12px;font-size:14.5px;line-height:1.72;color:var(--t-2);}
  .compare-list li i{flex:0 0 18px;margin-top:5px;font-size:13px;}
  .compare-col.old li i{color:#A8B5B2;}
  .compare-col.new li i{color:var(--c-mint);}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:800px;}
  .faq-item{border-bottom:1px solid var(--c-line);}
  .faq-q{
    width:100%;min-height:56px;display:flex;align-items:center;gap:14px;
    background:transparent;border:0;text-align:left;cursor:pointer;padding:12px 4px;
    font-size:16px;font-weight:600;color:var(--t-1);position:relative;
    transition:color .16s ease-out;
  }
  .faq-q::before{content:"";width:4px;height:20px;border-radius:2px;background:var(--c-accent);flex:0 0 4px;}
  .faq-q:hover{color:var(--c-ink-3);}
  .faq-q span{flex:1;}
  .faq-q i{color:var(--t-3);transition:transform .2s ease-out;font-size:14px;}
  .faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--c-accent);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
  .faq-item.is-open .faq-a{max-height:420px;}
  .faq-a-inner{padding:0 4px 22px 22px;color:var(--t-2);font-size:14.8px;line-height:1.85;}
  .faq-a-inner ol{margin-top:10px;display:flex;flex-direction:column;gap:6px;padding-left:2px;}
  .faq-a-inner ol li{padding-left:22px;position:relative;}
  .faq-a-inner ol li::before{
    content:counter(step);counter-increment:step;position:absolute;left:0;top:.35em;
    width:16px;height:16px;border-radius:50%;background:rgba(13,59,54,.09);color:var(--c-ink-2);
    font-size:10px;display:flex;align-items:center;justify-content:center;font-weight:700;
  }
  .faq-a-inner ol{counter-reset:step;}

  /* ============ 表单 ============ */
  .form-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:28px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  }
  .form-card::before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,var(--c-ink),var(--c-mint));}
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--t-1);}
  .field label b{color:var(--c-accent-p);font-weight:600;margin-left:2px;}
  .input,.select,.textarea{
    width:100%;border:1px solid var(--c-line);border-radius:var(--r-btn);background:#FBFCFB;
    padding:12px 14px;font-size:15px;transition:border-color .16s ease-out,box-shadow .16s ease-out,background .16s ease-out;
  }
  .input,.select{height:46px;}
  .textarea{min-height:112px;resize:vertical;line-height:1.7;}
  .input::placeholder,.textarea::placeholder{color:var(--t-3);}
  .input:focus,.select:focus,.textarea:focus{
    outline:none;border-color:var(--c-ink-3);background:#fff;box-shadow:0 0 0 3px rgba(13,59,54,.12);
  }
  .select{
    appearance:none;
    background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%237C8B88'%3E%3Cpath d='M4.5 6.5 8 10l3.5-3.5z'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 12px center;background-size:18px;
    padding-right:38px;cursor:pointer;
  }
  .check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--t-2);line-height:1.7;}
  .check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--c-ink);flex:0 0 16px;}
  .form-tip{
    display:none;margin-top:16px;padding:12px 14px;border-radius:var(--r-btn);
    background:rgba(30,158,106,.1);border:1px solid rgba(30,158,106,.3);
    color:#16724E;font-size:14px;
  }
  .form-tip.is-show{display:block;}
  .form-note{margin-top:14px;font-size:12.5px;color:var(--t-3);line-height:1.7;}
  .info-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line);}
  .info-item:last-child{border-bottom:0;}
  .info-item i{
    width:38px;height:38px;flex:0 0 38px;border-radius:10px;background:rgba(13,59,54,.07);
    color:var(--c-ink-2);display:flex;align-items:center;justify-content:center;font-size:15px;
  }
  .info-item h4{font-size:15px;font-weight:600;}
  .info-item p{font-size:13.5px;color:var(--t-2);margin-top:4px;line-height:1.7;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--c-dark);color:rgba(232,241,238,.72);margin-top:auto;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding:60px 0 40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .logo-mark{width:36px;height:36px;flex:0 0 36px;font-size:17px;}
  .footer-brand .logo-title{font-size:15px;}
  .footer-brand .logo-sub{font-size:10.5px;}
  .footer-about{font-size:13.5px;line-height:1.8;color:rgba(232,241,238,.6);max-width:320px;}
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col a{font-size:13px;color:rgba(232,241,238,.62);transition:color .16s ease-out;}
  .footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .footer-col p{font-size:13px;color:rgba(232,241,238,.62);line-height:1.85;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12.5px;color:rgba(232,241,238,.5);
  }
  .footer-bottom a{color:rgba(232,241,238,.72);}
  .footer-bottom a:hover{color:#fff;}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .hero-title{font-size:38px;}
    .sec-title{font-size:28px;}
  }
  @media (max-width:1023px){
    .sidebar{display:none;}
    .drawer{display:flex;}
    .mobile-bar{display:flex;}
    .main{margin-left:0;}
    body.is-collapsed .main{margin-left:0;}
    .main{padding-top:56px;}
    .section{padding:56px 0;}
    .section-tight{padding:44px 0;}
    .hero{padding:40px 0 24px;}
    .hero-title{font-size:32px;}
    .hero-visual{aspect-ratio:16/9;height:240px;}
    .hero-visual img{height:240px;}
    .compare{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px;}
    .container{padding:0 20px;}
  }
  @media (min-width:1024px){
    .drawer,.drawer-mask{display:none;}
  }
  @media (max-width:767px){
    .container{padding:0 16px;}
    .hero-title{font-size:28px;}
    .sec-title{font-size:24px;}
    .hero-metrics{gap:14px;}
    .hero-metrics .hm{padding:0 14px;}
    .hm-num{font-size:19px;}
    .metric-num{font-size:32px;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .form-card{padding:22px;}
    .compare-col{padding:22px;}
    .btn{width:100%;}
    .hero-cta .btn,.sec-link{width:auto;}
    .bento-media{min-height:220px;}
  }
  @media (max-width:520px){
    .hero-metrics{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;width:100%;}
    .hero-metrics .hm{padding:0;border-left:0;}
    .faq-q{font-size:15px;}
  }

/* roulang page: article */
:root{
  --c-ink:#0D3B36;
  --c-ink-2:#155046;
  --c-ink-3:#1E6A5C;
  --c-accent:#FF7A2F;
  --c-accent-h:#E3631B;
  --c-accent-a:#C9520F;
  --c-mint:#2CC5A8;
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-dark:#082924;
  --t-1:#12211F;
  --t-2:#4A5B58;
  --t-3:#7C8B88;
  --c-line:#E2E8E4;
  --ok:#1E9E6A;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(13,59,54,.05), 0 8px 24px -14px rgba(13,59,54,.18);
  --sh-2:0 2px 4px rgba(13,59,54,.06), 0 18px 36px -18px rgba(13,59,54,.24);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
ul{list-style:none;padding:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-ink);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}

/* ============ 布局外壳 ============ */
.main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  padding-top:0;
  transition:margin-left .2s ease-out;
}
body.sidebar-collapsed{--sidebar-w:76px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.section{padding:72px 0;}
.section-tight{padding:48px 0;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--c-ink);
  color:#E9F2EF;
  display:flex;
  flex-direction:column;
  z-index:70;
  transition:width .2s ease-out, transform .22s ease-out;
  overflow:hidden;
}
.sidebar-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;
  padding:20px 16px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.logo-mark{
  flex:0 0 auto;
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-accent),#FF9C60);
  color:#fff;font-weight:700;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(255,122,47,.9);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.logo-title{font-size:17px;font-weight:700;letter-spacing:.5px;color:#fff;}
.logo-sub{font-size:11px;color:#9CC3BA;letter-spacing:.4px;white-space:nowrap;}
.sidebar-toggle{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.12);
  color:#CFE5DF;
  width:30px;height:30px;border-radius:8px;
  cursor:pointer;flex:0 0 auto;
  transition:background .18s ease-out,color .18s ease-out;
}
.sidebar-toggle:hover{background:rgba(255,255,255,.16);color:#fff;}
.sidebar-nav{padding:14px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;
  border-radius:10px;
  font-size:14.5px;color:#C8DDD7;
  border-left:3px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 auto;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{
  background:rgba(255,255,255,.08);
  border-left-color:var(--c-accent);
  color:#fff;font-weight:600;
}
.sidebar-foot{
  padding:16px;
  border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-direction:column;gap:12px;
}
.sidebar-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  transition:background .18s ease-out,transform .18s ease-out;
}
.sidebar-cta:hover{background:var(--c-accent-h);transform:translateY(-1px);}
.sidebar-contact{font-size:12px;color:#8FB4AB;line-height:1.7;}
body.sidebar-collapsed .logo-text,
body.sidebar-collapsed .nav-item span,
body.sidebar-collapsed .sidebar-cta span,
body.sidebar-collapsed .sidebar-contact{display:none;}
body.sidebar-collapsed .sidebar-head{justify-content:center;}
body.sidebar-collapsed .sidebar-toggle{display:none;}
body.sidebar-collapsed .nav-item{justify-content:center;padding:0;}

/* ============ 顶部移动栏 ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--c-ink);
  color:#fff;
  display:none;align-items:center;gap:12px;
  padding:0 14px;z-index:80;
  box-shadow:0 6px 18px -12px rgba(8,41,36,.9);
}
.topbar .logo-mark{width:32px;height:32px;font-size:16px;border-radius:9px;}
.topbar .logo-title{font-size:15px;}
.topbar .logo-sub{font-size:10px;}
.topbar-btn{
  background:rgba(255,255,255,.10);border:none;color:#fff;
  width:36px;height:36px;border-radius:9px;cursor:pointer;font-size:16px;
}
.topbar-cta{
  margin-left:auto;background:var(--c-accent);color:#fff;
  padding:8px 14px;border-radius:9px;font-size:14px;font-weight:600;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,41,36,.5);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out;z-index:65;
}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--t-3);
  padding:24px 0 0;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--t-3);}
.breadcrumb a:hover{color:var(--c-ink-3);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#C3CFCB;}
.breadcrumb .current{color:var(--t-3);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头 ============ */
.article-head{padding:20px 0 8px;max-width:820px;}
.article-head h1{
  font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.2px;
  margin-bottom:18px;
}
.article-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);
  padding-bottom:22px;border-bottom:1px solid var(--c-line);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(255,122,47,.10);color:var(--c-accent-a);
}
.badge-mint{background:rgba(44,197,168,.14);color:#177562;}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CFCB;}
.article-cover{
  margin:26px 0 8px;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);aspect-ratio:21/9;background:#DDE7E2;
}
.article-cover img{width:100%;height:100%;object-fit:cover;}

/* ============ 正文 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:48px;
  padding:36px 0 72px;
  align-items:start;
}
.article-body{
  max-width:780px;
  font-size:16.5px;line-height:1.92;color:#20302D;
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:25px;line-height:1.4;font-weight:700;
  margin:40px 0 16px;padding-left:15px;color:var(--t-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--c-accent);
}
.article-body h3{font-size:20px;line-height:1.5;font-weight:600;margin:28px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.5em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.4em 0;}
.article-body blockquote{
  margin:24px 0;padding:14px 20px;
  border-left:4px solid var(--c-accent);
  background:#fff;border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--t-2);
}
.article-body img{border-radius:var(--r-card);margin:24px 0;height:auto;}
.article-body a{color:var(--c-ink-3);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-accent-a);}
.article-body strong{font-weight:600;}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:32px 0;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;display:block;overflow-x:auto;}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 13px;text-align:left;}
.article-body th{background:#EFF5F1;font-weight:600;}
.article-body pre{
  background:#0F2B27;color:#DFF4EF;padding:16px 18px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;background:#EDF2EF;padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;padding:0;color:inherit;font-size:inherit;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--t-3);text-align:center;margin-top:8px;}

/* ============ 侧边资料卡 ============ */
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  position:sticky;top:88px;
}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:12px;color:var(--t-1);}
.side-card p{font-size:13.5px;color:var(--t-2);line-height:1.8;}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.side-list li{display:flex;gap:9px;font-size:13.5px;color:var(--t-2);line-height:1.7;}
.side-list i{color:var(--c-mint);margin-top:5px;font-size:12px;}
.side-card .btn{margin-top:16px;width:100%;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px -12px rgba(255,122,47,.9);}
.btn-primary:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{background:var(--c-accent-a);transform:translateY(0);}
.btn-outline{background:transparent;border-color:#C9D6D1;color:var(--c-ink);}
.btn-outline:hover{border-color:var(--c-ink-3);background:rgba(30,106,92,.06);color:var(--c-ink-3);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ============ 文章尾 ============ */
.article-foot{
  max-width:780px;
  margin-top:36px;padding-top:24px;border-top:1px solid var(--c-line);
}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:20px;}
.tag-row .label{font-size:13px;color:var(--t-3);}
.tag{
  font-size:12.5px;color:var(--c-ink-3);
  background:rgba(30,106,92,.07);border:1px solid rgba(30,106,92,.14);
  padding:5px 12px;border-radius:999px;
  transition:background .18s ease-out,color .18s ease-out;
}
.tag:hover{background:rgba(30,106,92,.14);color:var(--c-ink);}
.article-nav{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 空态 ============ */
.empty-article{
  max-width:660px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:44px 32px;text-align:center;box-shadow:var(--sh-1);
}
.empty-article .empty-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 18px;
  background:rgba(255,122,47,.10);color:var(--c-accent);
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.empty-article h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-article p{color:var(--t-2);font-size:15px;margin-bottom:22px;}

/* ============ 延伸阅读 ============ */
.rel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;}
.rel-head h2{font-size:26px;font-weight:700;}
.rel-head p{font-size:14px;color:var(--t-2);margin-top:6px;}
.rel-link{font-size:14px;font-weight:600;color:var(--c-ink-3);display:inline-flex;align-items:center;gap:6px;}
.rel-link i{transition:transform .18s ease-out;}
.rel-link:hover i{transform:translateX(4px);}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:14px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D2E0DA;}
.rel-thumb{flex:0 0 116px;aspect-ratio:16/11;border-radius:10px;overflow:hidden;background:#DDE7E2;}
.rel-thumb img{width:100%;height:100%;object-fit:cover;}
.rel-body{min-width:0;}
.rel-body .rel-tag{font-size:11.5px;color:var(--c-mint);font-weight:600;}
.rel-body h3{
  font-size:14.5px;font-weight:600;line-height:1.55;margin:6px 0 8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover .rel-body h3{color:var(--c-ink-3);}
.rel-body .rel-date{font-size:12px;color:var(--t-3);}

/* ============ CTA 条 ============ */
.cta-band{
  background:var(--c-dark);
  border-radius:18px;
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  background:radial-gradient(circle,rgba(44,197,168,.30),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:#B9D6CF;max-width:56ch;}
.cta-band .btn{flex:0 0 auto;position:relative;z-index:1;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-dark);color:#B9D6CF;
  padding:56px 0 0;margin-top:8px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-about{font-size:13.5px;line-height:1.85;color:#9CBDB5;max-width:34ch;}
.footer-col h4{font-size:14px;font-weight:700;color:#E6F2EE;margin-bottom:14px;}
.footer-col ul{display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:13.5px;color:#9CBDB5;transition:color .18s ease-out;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13.5px;line-height:1.9;color:#9CBDB5;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 0 24px;font-size:13px;color:#7FA29A;flex-wrap:wrap;
}
.footer-bottom a{color:#9CBDB5;display:inline-flex;align-items:center;gap:6px;}
.footer-bottom a:hover{color:#fff;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 268px;gap:34px;}
}
@media (max-width:1023px){
  .sidebar{
    width:280px;transform:translateX(-100%);
    box-shadow:12px 0 40px -20px rgba(0,0,0,.6);
  }
  body.drawer-open .sidebar{transform:translateX(0);}
  body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
  body.sidebar-collapsed{--sidebar-w:0px;}
  .topbar{display:flex;}
  .sidebar-toggle{display:block;}
  .main{margin-left:0;padding-top:56px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-bottom:56px;}
  .side-card{position:static;}
  .article-head h1{font-size:31px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 26px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}
  .section{padding:56px 0;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  .article-head h1{font-size:26px;line-height:1.34;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .article-cover{aspect-ratio:16/9;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .rel-card{flex-direction:row;}
  .cta-band h2{font-size:21px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .article-nav .btn{width:100%;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0D3B36;
  --c-ink-2:#155046;
  --c-ink-3:#1E6A5C;
  --c-accent:#FF7A2F;
  --c-accent-h:#E3631B;
  --c-accent-p:#C9520F;
  --c-mint:#2CC5A8;
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-dark:#082924;
  --t-1:#12211F;
  --t-2:#4A5B58;
  --t-3:#7C8B88;
  --c-line:#E2E8E4;
  --r-card:14px;
  --r-btn:10px;
  --sh-1:0 1px 2px rgba(13,59,54,.05), 0 8px 24px -14px rgba(13,59,54,.18);
  --sh-2:0 2px 4px rgba(13,59,54,.06), 0 18px 36px -18px rgba(13,59,54,.24);
  --sidebar-w:248px;
  --sidebar-w-collapsed:76px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--c-bg);
  color:var(--t-1);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul{list-style:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}

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

/* ---------- 侧栏外壳 ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);z-index:80;
  display:flex;flex-direction:column;
  transition:width .2s ease-out,transform .22s ease-out;
}
.sidebar-head{
  padding:20px 18px;display:flex;align-items:center;gap:12px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.logo-mark{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--c-mint),var(--c-ink-3));
  display:grid;place-items:center;color:#04231F;font-weight:700;font-size:18px;
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;overflow:hidden}
.logo-title{font-weight:700;font-size:16px;color:#fff;letter-spacing:.5px}
.logo-sub{font-size:11px;color:rgba(255,255,255,.58);white-space:nowrap}
.side-toggle{
  margin-left:auto;width:30px;height:30px;border-radius:8px;border:0;cursor:pointer;
  background:rgba(255,255,255,.08);color:#CFE3DF;display:grid;place-items:center;
  transition:background .18s ease-out,color .18s ease-out;
}
.side-toggle:hover{background:rgba(255,255,255,.16);color:#fff}

.sidebar-nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.sidebar-nav::-webkit-scrollbar{width:6px}
.sidebar-nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;
  border-radius:10px;color:rgba(255,255,255,.74);font-size:14.5px;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 auto}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.is-active{background:rgba(255,255,255,.08);color:#fff;font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--c-accent);
}
.sidebar-foot{padding:16px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-direction:column;gap:12px}
.sidebar-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;height:44px;border-radius:var(--r-btn);
  background:var(--c-accent);color:#fff;font-weight:600;font-size:15px;
  transition:background .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.sidebar-cta:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2)}
.sidebar-note{font-size:12px;line-height:1.7;color:rgba(255,255,255,.55)}

/* 折叠态 */
body.side-collapsed .app-sidebar{width:var(--sidebar-w-collapsed)}
body.side-collapsed .app-main{margin-left:var(--sidebar-w-collapsed)}
body.side-collapsed .logo-text,
body.side-collapsed .nav-item span,
body.side-collapsed .sidebar-note,
body.side-collapsed .sidebar-cta span{display:none}
body.side-collapsed .sidebar-head{flex-direction:column;gap:10px;padding:16px 8px}
body.side-collapsed .side-toggle{margin-left:0}
body.side-collapsed .nav-item{justify-content:center;padding:0}

/* 移动顶栏 */
.mobile-topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
  background:var(--c-ink);align-items:center;gap:12px;padding:0 14px;color:#fff;
}
.menu-btn{
  width:38px;height:38px;border-radius:9px;border:0;cursor:pointer;flex:0 0 auto;
  background:rgba(255,255,255,.09);color:#fff;display:grid;place-items:center;font-size:16px;
}
.mobile-topbar .logo-title{font-size:15px}
.topbar-cta{
  margin-left:auto;height:34px;padding:0 14px;border-radius:9px;background:var(--c-accent);
  color:#fff;font-size:13.5px;font-weight:600;display:inline-flex;align-items:center;gap:6px;
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,41,36,.5);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* 主区 */
.app-main{
  margin-left:var(--sidebar-w);min-height:100vh;
  display:flex;flex-direction:column;
  transition:margin-left .2s ease-out;
}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;
  padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  font-size:15.5px;font-weight:600;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{background:var(--c-accent-p);transform:translateY(0)}
.btn-ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--c-ink)}
.btn-ghost:hover{border-color:var(--c-ink-3);background:rgba(30,106,92,.06);transform:translateY(-1px)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(44,197,168,.16);color:#146B58;
}
.badge-accent{background:rgba(255,122,47,.15);color:#B34B10}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 72px;background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-line)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(13,59,54,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(13,59,54,.05) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero-copy .badge{margin-bottom:18px}
.hero-title{
  font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;
  margin:0 0 18px;max-width:15em;
}
.hero-lead{font-size:16px;line-height:1.85;color:var(--t-2);margin:0 0 28px;max-width:56ch}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{display:flex;margin-top:32px;padding-top:20px;border-top:1px solid var(--c-line)}
.hero-stat{flex:1;padding-right:18px;display:flex;flex-direction:column;gap:2px}
.hero-stat + .hero-stat{border-left:1px solid var(--c-line);padding-left:18px}
.hero-stat strong{font-size:24px;font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{font-size:13px;color:var(--t-3)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  box-shadow:var(--sh-1);border:1px solid rgba(13,59,54,.08);
}
.hero-float{
  position:absolute;right:-14px;bottom:-16px;min-width:196px;
  background:rgba(255,255,255,.95);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px 18px;box-shadow:var(--sh-2);display:flex;flex-direction:column;gap:2px;
}
.float-label{font-size:12px;color:var(--t-3)}
.float-value{font-size:15px;font-weight:600;color:var(--c-ink-3);font-variant-numeric:tabular-nums}

/* ---------- 板块基础 ---------- */
.section{padding:80px 0}
.section-alt{background:#FFFFFF;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-kicker{
  display:inline-block;font-size:13px;font-weight:600;color:var(--c-ink-3);
  padding-left:12px;position:relative;margin-bottom:12px;
}
.section-kicker::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:3px;background:var(--c-accent)}
.section-title{font-size:32px;line-height:1.35;font-weight:700;margin:0 0 12px}
.section-desc{font-size:15.5px;line-height:1.85;color:var(--t-2);margin:0}

/* ---------- 指标看板 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.metric-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.metric-num{font-size:38px;font-weight:700;color:var(--c-ink);line-height:1.1;font-variant-numeric:tabular-nums}
.metric-num small{font-size:15px;font-weight:600;color:var(--t-3);margin-left:4px}
.metric-label{font-size:13px;color:var(--t-3);margin-top:6px}
.metric-bar{height:4px;border-radius:4px;background:var(--c-line);margin-top:16px;overflow:hidden}
.metric-bar span{display:block;height:100%;border-radius:4px;background:var(--c-mint)}
.metric-bar span.warn{background:var(--c-accent)}

/* ---------- 流程时间线 ---------- */
.timeline{position:relative;max-width:880px}
.timeline::before{
  content:"";position:absolute;left:19px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--c-mint),rgba(44,197,168,.12));
}
.step{position:relative;padding-left:68px;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step-dot{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:12px;
  background:var(--c-surface);border:2px solid var(--c-mint);color:var(--c-ink);
  display:grid;place-items:center;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:var(--sh-1);z-index:1;
}
.step-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,106,92,.28)}
.step-title{font-size:20px;line-height:1.5;font-weight:600;margin:0 0 8px}
.step-text{font-size:15px;line-height:1.85;color:var(--t-2);margin:0}
.step-tip{
  display:inline-flex;align-items:center;gap:6px;margin-top:12px;
  font-size:13px;color:#146B58;background:rgba(44,197,168,.12);
  border-radius:8px;padding:6px 12px;
}

/* ---------- 数据维度卡片 ---------- */
.dim-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.dim-card{
  display:flex;gap:16px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.dim-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,106,92,.28)}
.dim-icon{
  width:46px;height:46px;border-radius:12px;flex:0 0 auto;
  background:rgba(13,59,54,.07);color:var(--c-ink-3);
  display:grid;place-items:center;font-size:18px;
  transition:background .18s ease-out,color .18s ease-out;
}
.dim-card:hover .dim-icon{background:var(--c-ink);color:#fff}
.dim-body h3{font-size:18px;line-height:1.5;font-weight:600;margin:0 0 6px}
.dim-body p{font-size:14.5px;line-height:1.8;color:var(--t-2);margin:0}
.dim-tag{
  display:inline-block;margin-top:10px;font-size:12px;font-weight:600;
  color:#B34B10;background:rgba(255,122,47,.13);border-radius:999px;padding:2px 10px;
}

/* ---------- 相关内容横向卡片 ---------- */
.related-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  display:flex;gap:14px;align-items:center;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:14px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(30,106,92,.28)}
.related-card img{width:110px;height:80px;object-fit:cover;border-radius:10px;flex:0 0 auto}
.related-card h3{font-size:15.5px;font-weight:600;margin:0 0 4px;transition:color .18s ease-out}
.related-card:hover h3{color:var(--c-ink-3)}
.related-card p{font-size:13px;line-height:1.7;color:var(--t-3);margin:0}
.related-arrow{font-size:12px;color:var(--c-accent);margin-top:6px;display:inline-block;transition:transform .18s ease-out}
.related-card:hover .related-arrow{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq{max-width:840px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.faq-item:hover{border-color:rgba(30,106,92,.28)}
.faq-item.is-open{box-shadow:var(--sh-1)}
.faq-q{
  position:relative;width:100%;min-height:56px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;padding:12px 20px 12px 24px;
  background:none;border:0;text-align:left;font-size:16px;font-weight:600;cursor:pointer;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;
  border-radius:0 4px 4px 0;background:var(--c-accent);
  opacity:0;transition:opacity .2s ease-out;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-q i{color:var(--c-ink-3);font-size:15px;transition:transform .2s ease-out;flex:0 0 auto}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease-out}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a-inner{overflow:hidden}
.faq-a-inner p{margin:0;padding:0 24px 20px;font-size:15px;line-height:1.85;color:var(--t-2)}

/* ---------- CTA 条 ---------- */
.cta-strip{
  position:relative;overflow:hidden;background:var(--c-dark);border-radius:16px;
  padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--sh-2);
}
.cta-strip::after{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(44,197,168,.3),transparent 70%);
}
.cta-strip::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c-accent);
}
.cta-copy{position:relative;z-index:1;max-width:640px}
.cta-title{font-size:26px;line-height:1.4;font-weight:700;color:#fff;margin:0 0 10px}
.cta-text{font-size:15px;line-height:1.85;color:rgba(255,255,255,.72);margin:0}
.cta-strip .btn{position:relative;z-index:1;flex:0 0 auto}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.7);padding:60px 0 24px;margin-top:auto}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px;
  padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);margin:0;max-width:36ch}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px}
.footer-col ul{display:flex;flex-direction:column;gap:9px;margin:0;padding:0}
.footer-col li a{font-size:13px;color:rgba(255,255,255,.66);transition:color .18s ease-out}
.footer-col li a:hover{color:var(--c-mint)}
.footer-col p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.6);margin:0}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  padding-top:20px;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.72);transition:color .18s ease-out}
.footer-bottom a:hover{color:var(--c-mint)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero-title{font-size:38px}
  .section-title{font-size:28px}
}
@media (max-width:1023px){
  .mobile-topbar{display:flex}
  .app-sidebar{
    width:280px;transform:translateX(-100%);
    box-shadow:0 0 44px rgba(0,0,0,.32);
  }
  .app-sidebar.is-open{transform:translateX(0)}
  body.side-collapsed .app-sidebar{width:280px;transform:translateX(-100%)}
  body.side-collapsed .app-sidebar.is-open{transform:translateX(0)}
  body.side-collapsed .logo-text,
  body.side-collapsed .nav-item span,
  body.side-collapsed .sidebar-note,
  body.side-collapsed .sidebar-cta span{display:flex}
  body.side-collapsed .sidebar-cta span{display:inline}
  body.side-collapsed .nav-item{justify-content:flex-start;padding:0 14px}
  body.side-collapsed .sidebar-head{flex-direction:row;gap:12px;padding:20px 18px}
  body.side-collapsed .side-toggle{margin-left:auto;display:none}
  .side-toggle{display:none}
  .app-main{margin-left:0;padding-top:56px}
  body.side-collapsed .app-main{margin-left:0}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual img{aspect-ratio:16/9;max-height:300px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .hero-title{font-size:30px;line-height:1.3}
  .hero-lead{font-size:15px}
  .hero-float{position:static;margin-top:14px;right:auto;bottom:auto}
  .hero-stats{flex-direction:column;gap:12px}
  .hero-stat{padding-right:0}
  .hero-stat + .hero-stat{border-left:0;padding-left:0;border-top:1px solid var(--c-line);padding-top:12px}
  .section{padding:52px 0}
  .section-title{font-size:24px}
  .metric-num{font-size:30px}
  .dim-grid{grid-template-columns:1fr}
  .related-strip{grid-template-columns:1fr}
  .timeline::before{left:16px}
  .step{padding-left:56px}
  .step-dot{width:34px;height:34px;border-radius:10px;font-size:14px}
  .cta-strip{flex-direction:column;align-items:flex-start;padding:30px 24px;border-radius:14px}
  .cta-title{font-size:21px}
}
@media (max-width:639px){
  .btn-row .btn{width:100%}
  .metrics{grid-template-columns:repeat(2,1fr);gap:14px}
  .metric-card{padding:16px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .related-card img{width:96px;height:72px}
}

/* roulang page: category1 */
:root{
  --c-ink:#0D3B36;
  --c-ink-2:#155046;
  --c-ink-3:#1E6A5C;
  --c-accent:#FF7A2F;
  --c-accent-h:#E3631B;
  --c-accent-a:#C9520F;
  --c-mint:#2CC5A8;
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-dark:#082924;
  --t-1:#12211F;
  --t-2:#4A5B58;
  --t-3:#7C8B88;
  --c-line:#E2E8E4;
  --ok:#1E9E6A;
  --warn:#D97706;
  --danger:#D64545;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(13,59,54,.05),0 8px 24px -14px rgba(13,59,54,.18);
  --sh-2:0 2px 4px rgba(13,59,54,.06),0 18px 36px -18px rgba(13,59,54,.24);
  --sidebar-w:248px;
  --sidebar-w-c:76px;
  --topbar-h:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.8;color:var(--t-1);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ==== 侧边栏 ==== */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);z-index:60;
  background:linear-gradient(180deg,#0D3B36 0%,#082924 100%);
  display:flex;flex-direction:column;
  transition:width .2s ease-out,transform .24s ease-out;
}
.sidebar-head{
  display:flex;align-items:center;gap:12px;padding:22px 18px 20px;
  border-bottom:1px solid rgba(255,255,255,.08);flex:none;
}
.logo-mark{
  display:flex;align-items:center;justify-content:center;flex:none;
  width:40px;height:40px;border-radius:10px;background:var(--c-accent);
  color:#fff;font-size:19px;font-weight:700;letter-spacing:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.logo-title{font-size:16px;font-weight:700;color:#fff;letter-spacing:.5px;}
.logo-sub{font-size:10.5px;color:rgba(255,255,255,.62);letter-spacing:1.1px;white-space:nowrap;}
.sidebar-nav{padding:16px 0;flex:1 1 auto;overflow-y:auto;}
.nav-label{
  font-size:11px;letter-spacing:1.6px;color:rgba(255,255,255,.38);
  padding:0 20px 10px;font-weight:600;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 16px;margin:2px 10px;border-radius:10px;
  color:rgba(255,255,255,.74);font-size:14px;font-weight:500;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:none;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{background:rgba(255,255,255,.09);color:#fff;}
.nav-item.is-active::before{
  content:"";position:absolute;left:-10px;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-accent);
}
.sidebar-foot{
  flex:none;padding:18px;border-top:1px solid rgba(255,255,255,.08);
}
.sidebar-foot .btn{width:100%;justify-content:center;}
.sidebar-contact{
  margin-top:14px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.5);
}
.sidebar-contact i{color:var(--c-mint);margin-right:6px;}
.collapse-btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:34px;margin-top:12px;border-radius:8px;
  border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.62);
  font-size:12px;transition:background .18s ease-out,color .18s ease-out;
}
.collapse-btn:hover{background:rgba(255,255,255,.08);color:#fff;}

body.sidebar-collapsed .app-sidebar{width:var(--sidebar-w-c);}
body.sidebar-collapsed .sidebar-head{justify-content:center;padding:22px 10px 20px;}
body.sidebar-collapsed .logo-text,
body.sidebar-collapsed .nav-label,
body.sidebar-collapsed .nav-item span,
body.sidebar-collapsed .sidebar-contact,
body.sidebar-collapsed .collapse-btn span{display:none;}
body.sidebar-collapsed .nav-item{justify-content:center;padding:0;gap:0;}
body.sidebar-collapsed .sidebar-foot{padding:18px 14px;}
body.sidebar-collapsed .sidebar-foot .btn{padding:0;font-size:0;}
body.sidebar-collapsed .sidebar-foot .btn i{font-size:15px;margin:0;}
body.sidebar-collapsed .collapse-btn i{transform:rotate(180deg);}

/* ==== 移动端顶部栏 ==== */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:50;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  align-items:center;gap:12px;padding:0 14px;
}
.topbar .logo-mark{width:32px;height:32px;font-size:15px;border-radius:9px;}
.topbar .logo-title{font-size:14px;color:var(--t-1);}
.topbar .logo-sub{font-size:9.5px;color:var(--t-3);letter-spacing:.6px;}
.hamburger{
  width:38px;height:38px;border-radius:10px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;flex:none;
  border:1px solid var(--c-line);background:#fff;
}
.hamburger span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink);}
.topbar-spacer{flex:1 1 auto;min-width:0;}
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(8,41,36,.52);
  opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ==== 主内容 ==== */
.main{margin-left:var(--sidebar-w);transition:margin-left .2s ease-out;min-height:100vh;}
body.sidebar-collapsed .main{margin-left:var(--sidebar-w-c);}

/* ==== 按钮 ==== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn i{font-size:13px;}
.btn-primary{background:var(--c-ink);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-ink-2);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{background:var(--c-dark);transform:translateY(0);}
.btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{background:var(--c-accent-a);transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--c-ink);border:1px solid var(--c-line);}
.btn-ghost:hover{border-color:var(--c-ink);background:rgba(13,59,54,.06);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--c-ink);box-shadow:var(--sh-1);}
.btn-light:hover{background:#f0f4f1;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4);}
.btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.1);transform:translateY(-1px);}
.btn-sm{height:36px;padding:0 14px;font-size:13px;border-radius:9px;}

/* ==== 面包屑 / 页头 ==== */
.page-head{padding:44px 0 30px;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--t-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--t-2);transition:color .16s ease-out;}
.breadcrumb a:hover{color:var(--c-ink);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
.breadcrumb .sep{color:var(--c-line);}
.breadcrumb .current{color:var(--t-3);}
.page-title{
  font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;color:var(--t-1);
}
.page-title .accent-bar{
  display:inline-block;width:6px;height:32px;border-radius:3px;
  background:var(--c-accent);margin-right:16px;vertical-align:-3px;
}
.lead{
  margin-top:18px;max-width:820px;font-size:16px;line-height:1.9;color:var(--t-2);
}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:999px;
  font-size:12px;font-weight:600;background:rgba(13,59,54,.08);color:var(--c-ink-3);
}
.badge-mint{background:rgba(44,197,168,.14);color:#12796A;}
.badge-accent{background:rgba(255,122,47,.14);color:var(--c-accent-a);}

/* ==== 板块 ==== */
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:38px;max-width:780px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:1.4px;color:var(--c-accent-a);
  margin-bottom:12px;
}
.section-head .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-accent);}
.section-head h2{font-size:32px;line-height:1.35;font-weight:700;color:var(--t-1);letter-spacing:-.3px;}
.section-head p{margin-top:14px;font-size:15.5px;color:var(--t-2);line-height:1.85;}

/* ==== Hero 图文 ==== */
.hero-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:stretch;
}
.hero-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-1);background:var(--c-ink);min-height:360px;
}
.hero-media img{width:100%;height:100%;min-height:360px;object-fit:cover;opacity:.92;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(13,59,54,.55) 0%,rgba(8,41,36,.25) 55%,rgba(8,41,36,.72) 100%);
}
.hero-media-cap{
  position:absolute;left:22px;right:22px;bottom:22px;z-index:2;color:#fff;
}
.hero-media-cap h3{font-size:19px;font-weight:700;line-height:1.5;}
.hero-media-cap p{margin-top:8px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.82);}
.hero-media-chip{
  position:absolute;top:20px;left:20px;z-index:2;
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.32);
  color:#fff;font-size:12px;font-weight:600;backdrop-filter:blur(4px);
}
.hero-points{
  background:var(--c-surface);border-radius:var(--r-card);border:1px solid var(--c-line);
  box-shadow:var(--sh-1);padding:30px 28px;display:flex;flex-direction:column;justify-content:center;
}
.hero-points > h3{font-size:17px;font-weight:700;color:var(--t-1);margin-bottom:6px;}
.hero-points > .sub{font-size:13.5px;color:var(--t-3);margin-bottom:20px;}
.point-item{display:flex;gap:16px;padding:16px 0;border-top:1px solid var(--c-line);}
.point-item:first-of-type{border-top:0;padding-top:0;}
.point-num{
  flex:none;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(13,59,54,.08);color:var(--c-ink);font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.point-item:nth-child(3) .point-num{background:rgba(255,122,47,.14);color:var(--c-accent-a);}
.point-body h4{font-size:15.5px;font-weight:600;color:var(--t-1);line-height:1.5;}
.point-body p{margin-top:6px;font-size:13.5px;line-height:1.75;color:var(--t-2);}

/* ==== 指标条 ==== */
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;
}
.stat-cell{padding:28px 26px;border-left:1px solid var(--c-line);}
.stat-cell:first-child{border-left:0;}
.stat-num{
  font-size:38px;line-height:1.1;font-weight:700;color:var(--c-ink);
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
}
.stat-num small{font-size:15px;font-weight:600;margin-left:4px;letter-spacing:0;color:var(--c-ink-3);}
.stat-label{margin-top:10px;font-size:13px;color:var(--t-3);line-height:1.6;}
.stat-bar-line{margin-top:16px;height:4px;border-radius:4px;background:rgba(13,59,54,.08);overflow:hidden;}
.stat-bar-line i{display:block;height:100%;border-radius:4px;background:var(--c-mint);}
.stat-cell:nth-child(2) .stat-bar-line i{background:var(--c-accent);}
.stat-cell:nth-child(4) .stat-bar-line i{background:var(--c-ink-3);}

/* ==== 卡片网格 2×3 ==== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.info-card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px 26px;
  box-shadow:var(--sh-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(13,59,54,.18);}
.card-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(13,59,54,.08);color:var(--c-ink);font-size:17px;margin-bottom:18px;
}
.info-card:nth-child(3n+2) .card-icon{background:rgba(255,122,47,.14);color:var(--c-accent-a);}
.info-card:nth-child(3n+3) .card-icon{background:rgba(44,197,168,.14);color:#12796A;}
.card-title{font-size:18px;font-weight:700;color:var(--t-1);line-height:1.5;}
.info-card:hover .card-title{color:var(--c-ink-3);}
.card-text{margin-top:10px;font-size:14px;line-height:1.8;color:var(--t-2);flex:1 1 auto;}
.card-link{
  margin-top:20px;padding-top:14px;border-top:1px solid var(--c-line);
  display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--c-ink-3);
}
.card-link i{font-size:12px;transition:transform .18s ease-out;}
.info-card:hover .card-link i{transform:translateX(4px);}

/* ==== 相关内容横向条 ==== */
.rel-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.rel-card{
  display:flex;gap:14px;align-items:center;padding:14px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.rel-thumb{
  flex:none;width:104px;height:76px;border-radius:10px;overflow:hidden;background:var(--c-line);
}
.rel-thumb img{width:100%;height:100%;object-fit:cover;}
.rel-body{min-width:0;}
.rel-body h4{
  font-size:14px;font-weight:600;line-height:1.55;color:var(--t-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card:hover .rel-body h4{color:var(--c-ink-3);}
.rel-body span{
  display:inline-flex;align-items:center;gap:6px;margin-top:8px;
  font-size:12px;color:var(--t-3);
}

/* ==== FAQ ==== */
.faq-wrap{max-width:800px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow .18s ease-out,border-color .18s ease-out;
}
.faq-item:hover{box-shadow:var(--sh-1);}
.faq-item.is-open{box-shadow:var(--sh-2);border-color:rgba(13,59,54,.2);}
.faq-q{
  position:relative;width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:16px 22px 16px 26px;text-align:left;
  font-size:16px;font-weight:600;color:var(--t-1);line-height:1.6;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:0 4px 4px 0;
  background:var(--c-line);transition:background .18s ease-out;
}
.faq-item.is-open .faq-q::before{background:var(--c-accent);}
.faq-q .plus{
  flex:none;width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  background:rgba(13,59,54,.07);color:var(--c-ink);font-size:12px;
  transition:transform .2s ease-out,background .18s ease-out,color .18s ease-out;
}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);background:var(--c-accent);color:#fff;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s ease-out;}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a-inner{padding:0 26px 22px 26px;font-size:14.5px;line-height:1.85;color:var(--t-2);}
.faq-a-inner p + p{margin-top:10px;}
.faq-a-inner ol{margin-top:10px;padding-left:2px;counter-reset:faq;}
.faq-a-inner ol li{
  position:relative;padding-left:24px;margin-bottom:6px;counter-increment:faq;
}
.faq-a-inner ol li::before{
  content:counter(faq);position:absolute;left:0;top:2px;width:16px;height:16px;border-radius:5px;
  background:rgba(44,197,168,.18);color:#12796A;font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}

/* ==== CTA ==== */
.cta-band{
  position:relative;overflow:hidden;border-radius:18px;
  background:linear-gradient(120deg,#0D3B36 0%,#155046 58%,#1E6A5C 100%);
  padding:56px 52px;color:#fff;box-shadow:var(--sh-2);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.34) 0%,rgba(255,122,47,0) 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;}
.cta-band h2{font-size:30px;line-height:1.4;font-weight:700;letter-spacing:-.3px;}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.8);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}
.cta-meta{
  display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:13px;color:rgba(255,255,255,.72);
}
.cta-meta span{display:inline-flex;align-items:center;gap:8px;}
.cta-meta i{color:var(--c-mint);}

/* ==== 页脚 ==== */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.68);padding:64px 0 0;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .logo-title{color:#fff;}
.footer-brand .logo-sub{color:rgba(255,255,255,.55);}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:700;color:rgba(255,255,255,.94);margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:13px;color:rgba(255,255,255,.64);transition:color .16s ease-out;}
.footer-col ul li a:hover{color:#fff;}
.footer-col p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;font-size:13px;
  color:rgba(255,255,255,.55);
}
.footer-bottom a{display:inline-flex;align-items:center;gap:8px;color:rgba(255,255,255,.72);transition:color .16s ease-out;}
.footer-bottom a:hover{color:var(--c-accent);}

/* ==== 响应式 ==== */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(3,1fr);gap:20px;}
  .rel-strip{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  .app-sidebar{width:280px;transform:translateX(-100%);box-shadow:var(--sh-2);}
  .app-sidebar.is-open{transform:translateX(0);}
  .main{margin-left:0;padding-top:var(--topbar-h);}
  body.sidebar-collapsed .main{margin-left:0;}
  body.sidebar-collapsed .app-sidebar{width:280px;}
  body.sidebar-collapsed .logo-text,
  body.sidebar-collapsed .nav-item span,
  body.sidebar-collapsed .sidebar-contact{display:flex;}
  body.sidebar-collapsed .nav-item span{display:inline;}
  body.sidebar-collapsed .nav-item{justify-content:flex-start;padding:0 16px;gap:12px;}
  body.sidebar-collapsed .sidebar-foot .btn{font-size:14px;}
  body.sidebar-collapsed .sidebar-foot .btn i{margin-right:8px;}
  .collapse-btn{display:none;}
  .topbar{display:flex;}
  .page-head{padding:32px 0 22px;}
  .page-title{font-size:34px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:26px;}
  .hero-grid{grid-template-columns:1fr;gap:22px;}
  .hero-media,.hero-media img{min-height:260px;}
  .stat-bar{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(3){border-left:0;border-top:1px solid var(--c-line);}
  .stat-cell:nth-child(4){border-top:1px solid var(--c-line);}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .cta-band{padding:40px 30px;}
  .cta-inner{grid-template-columns:1fr;gap:26px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .page-title{font-size:30px;line-height:1.3;}
  .page-title .accent-bar{width:5px;height:24px;margin-right:12px;vertical-align:-2px;}
  .lead{font-size:15px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .stat-num{font-size:30px;}
  .stat-cell{padding:22px 18px;}
  .card-grid{grid-template-columns:1fr;}
  .rel-strip{grid-template-columns:1fr;}
  .cta-band{padding:32px 22px;border-radius:14px;}
  .cta-band h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:15px;padding:14px 18px 14px 22px;}
  .faq-a-inner{padding:0 22px 20px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-about{max-width:100%;}
  .footer-bottom{justify-content:flex-start;}
}
@media (max-width:519px){
  .card-grid{grid-template-columns:1fr;}
  .rel-card{flex-direction:column;align-items:flex-start;}
  .rel-thumb{width:100%;height:120px;}
}

/* roulang page: category3 */
:root{
    --c-ink:#0D3B36;
    --c-ink-2:#155046;
    --c-ink-3:#1E6A5C;
    --c-accent:#FF7A2F;
    --c-accent-h:#E3631B;
    --c-accent-p:#C9520F;
    --c-mint:#2CC5A8;
    --c-bg:#F5F7F4;
    --c-surface:#FFFFFF;
    --c-dark:#082924;
    --t1:#12211F;
    --t2:#4A5B58;
    --t3:#7C8B88;
    --c-line:#E2E8E4;
    --ok:#1E9E6A;
    --warn:#D97706;
    --danger:#D64545;
    --r-card:14px;
    --r-btn:10px;
    --sh-1:0 1px 2px rgba(13,59,54,.05), 0 8px 24px -14px rgba(13,59,54,.18);
    --sh-2:0 2px 4px rgba(13,59,54,.06), 0 18px 36px -18px rgba(13,59,54,.24);
    --sidebar-w:248px;
    --sidebar-w-sm:76px;
    --mbar-h:56px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--t1);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  img{max-width:100%;height:auto;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  :focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
  ::selection{background:rgba(255,122,47,.22);}

  /* ============ 侧栏外壳 ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
    background:var(--c-ink);color:#E8F1EF;
    display:flex;flex-direction:column;gap:14px;
    padding:18px 14px 20px;z-index:70;overflow-y:auto;
    transition:width .2s ease;
  }
  .sidebar-top{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;}
  .logo-block{display:flex;align-items:center;gap:10px;padding:4px;border-radius:12px;min-width:0;}
  .logo-mark{
    flex:0 0 auto;width:38px;height:38px;border-radius:11px;
    background:linear-gradient(140deg,var(--c-accent),#FF9D5C);
    color:#fff;font-size:19px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 8px 18px -10px rgba(255,122,47,.95);
  }
  .logo-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
  .logo-title{font-size:17px;font-weight:700;letter-spacing:.5px;color:#fff;}
  .logo-sub{font-size:11px;color:rgba(232,241,239,.62);letter-spacing:.3px;white-space:nowrap;}
  .collapse-btn{
    flex:0 0 auto;width:28px;height:28px;border-radius:8px;
    background:rgba(255,255,255,.08);color:#CFE0DD;font-size:11px;
    display:flex;align-items:center;justify-content:center;
    transition:background .18s ease,color .18s ease;
  }
  .collapse-btn:hover{background:rgba(255,255,255,.16);color:#fff;}

  .sidebar-nav{display:flex;flex-direction:column;gap:6px;margin-top:4px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    height:44px;padding:0 14px;border-radius:10px;
    font-size:15px;color:rgba(232,241,239,.78);
    transition:background .18s ease,color .18s ease;
  }
  .nav-item i{width:18px;text-align:center;font-size:15px;}
  .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
  .nav-item.is-active{background:rgba(255,255,255,.08);color:#fff;font-weight:600;}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--c-accent);
  }
  .sidebar-foot{
    margin-top:auto;padding-top:16px;
    border-top:1px solid rgba(255,255,255,.1);
    display:flex;flex-direction:column;gap:10px;
  }
  .sidebar-note{font-size:12px;line-height:1.7;color:rgba(232,241,239,.55);}

  body.is-collapsed .sidebar{width:var(--sidebar-w-sm);}
  body.is-collapsed .logo-text,
  body.is-collapsed .nav-item span,
  body.is-collapsed .sidebar-note,
  body.is-collapsed .sidebar-cta span{display:none;}
  body.is-collapsed .nav-item{justify-content:center;padding:0;}
  body.is-collapsed .sidebar-cta{padding:0;}
  body.is-collapsed .sidebar-cta .fa-solid{font-size:15px;}
  body.is-collapsed .main{margin-left:var(--sidebar-w-sm);}
  body.is-collapsed .sidebar-top{flex-direction:column;align-items:center;}

  /* ============ 移动端顶栏与抽屉 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:var(--mbar-h);
    background:var(--c-ink);color:#fff;align-items:center;justify-content:space-between;
    padding:0 14px;z-index:80;box-shadow:0 8px 20px -14px rgba(8,41,36,.9);
  }
  .bar-btn{
    width:36px;height:36px;border-radius:10px;display:inline-flex;
    align-items:center;justify-content:center;background:rgba(255,255,255,.1);color:#fff;font-size:15px;
  }
  .bar-brand{display:flex;align-items:center;gap:8px;min-width:0;}
  .bar-brand .logo-mark{width:30px;height:30px;border-radius:9px;font-size:15px;}
  .bar-brand .logo-title{font-size:15px;}
  .bar-brand .logo-sub{font-size:10px;}
  .bar-cta{
    display:inline-flex;align-items:center;height:34px;padding:0 13px;
    border-radius:9px;background:var(--c-accent);color:#fff;font-size:13px;font-weight:600;
  }

  .drawer{
    position:fixed;top:0;left:0;bottom:0;width:280px;max-width:86vw;
    background:var(--c-ink);color:#E8F1EF;z-index:90;
    transform:translateX(-100%);transition:transform .26s ease;
    padding:18px 14px;display:flex;flex-direction:column;gap:14px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(8,41,36,.55);z-index:85;
    opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}

  /* ============ 主区与容器 ============ */
  .main{
    margin-left:var(--sidebar-w);min-height:100vh;
    display:flex;flex-direction:column;
    transition:margin-left .2s ease;
  }
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .container-narrow{max-width:900px;}
  .section{padding:72px 0;}
  .section-tight{padding:44px 0;}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 24px;margin-bottom:28px;}
  .sec-head h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.2px;}
  .sec-head h2::after{content:"";display:block;width:44px;height:4px;border-radius:2px;background:var(--c-accent);margin-top:12px;}
  .sec-sub{color:var(--t2);font-size:15px;line-height:1.8;max-width:680px;margin-top:14px;}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-ink-3);transition:color .16s ease;}
  .link-more i{transition:transform .18s ease;}
  .link-more:hover{color:var(--c-accent-h);}
  .link-more:hover i{transform:translateX(4px);}

  /* ============ 通用按钮与标签 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn-accent{
    background:var(--c-accent);color:#fff;
    box-shadow:0 10px 22px -14px rgba(255,122,47,.95);
  }
  .btn-accent:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-accent:active{background:var(--c-accent-p);transform:translateY(0);}
  .btn-ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--c-ink);}
  .btn-ghost:hover{border-color:var(--c-ink);background:rgba(13,59,54,.05);transform:translateY(-1px);}
  .btn-ghost-light{background:transparent;border-color:rgba(255,255,255,.34);color:#fff;}
  .btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.62);transform:translateY(-1px);}
  .btn-block{width:100%;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
    border-radius:999px;font-size:12px;font-weight:600;
    background:rgba(255,255,255,.12);color:#E8F1EF;
  }
  .badge-accent{background:rgba(255,122,47,.2);color:#FFC49B;}
  .badge-mint{background:rgba(44,197,168,.2);color:#8BE7D6;}
  .badge-light{background:rgba(13,59,54,.07);color:var(--c-ink-2);}
  .badge-light-mint{background:rgba(44,197,168,.14);color:#14806C;}

  /* ============ 首屏 ============ */
  .page-hero{
    position:relative;color:#fff;padding:36px 0 58px;
    background-image:linear-gradient(102deg,rgba(8,41,36,.95) 0%,rgba(13,59,54,.88) 52%,rgba(24,90,79,.78) 100%),
      url('/assets/images/backpic/back-3.webp');
    background-size:cover;background-position:center;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:48px 48px;
  }
  .page-hero .container{position:relative;z-index:2;}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(232,241,239,.6);margin-bottom:22px;flex-wrap:wrap;}
  .breadcrumb a{transition:color .16s ease;}
  .breadcrumb a:hover{color:#fff;}
  .breadcrumb .cur{color:rgba(232,241,239,.88);}
  .page-title{font-size:44px;line-height:1.25;font-weight:700;letter-spacing:-.5px;margin-bottom:16px;}
  .page-lead{font-size:16px;line-height:1.9;color:rgba(232,241,239,.82);max-width:820px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

  /* ============ 相关内容横条 ============ */
  .rel-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
  .rel-card{
    display:flex;align-items:center;gap:14px;padding:12px;
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .rel-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(13,59,54,.2);}
  .rel-thumb{flex:0 0 116px;width:116px;height:80px;border-radius:10px;overflow:hidden;background:#E8EEEB;}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;}
  .rel-body{min-width:0;}
  .rel-title{display:block;font-size:15px;font-weight:600;margin-bottom:4px;transition:color .16s ease;}
  .rel-card:hover .rel-title{color:var(--c-ink-3);}
  .rel-desc{
    font-size:13px;color:var(--t3);line-height:1.6;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }

  /* ============ 对照清单 ============ */
  .compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .compare-col{border-radius:var(--r-card);padding:26px 24px;border:1px solid var(--c-line);}
  .compare-col.is-risk{background:linear-gradient(180deg,rgba(214,69,69,.055),#FFFFFF 70%);border-color:rgba(214,69,69,.26);}
  .compare-col.is-safe{background:linear-gradient(180deg,rgba(44,197,168,.12),#FFFFFF 72%);border-color:rgba(44,197,168,.42);}
  .compare-head{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;margin-bottom:16px;}
  .compare-head i{
    width:34px;height:34px;border-radius:10px;display:inline-flex;
    align-items:center;justify-content:center;font-size:15px;color:#fff;flex:0 0 34px;
  }
  .is-risk .compare-head i{background:var(--danger);}
  .is-safe .compare-head i{background:var(--c-mint);}
  .compare-list li{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px dashed var(--c-line);}
  .compare-list li:last-child{border-bottom:0;padding-bottom:2px;}
  .compare-list p{font-size:15px;color:var(--t2);line-height:1.8;}
  .ci{
    flex:0 0 22px;width:22px;height:22px;border-radius:7px;margin-top:4px;
    display:inline-flex;align-items:center;justify-content:center;font-size:11px;
  }
  .ci-x{background:rgba(214,69,69,.12);color:var(--danger);}
  .ci-ok{background:rgba(44,197,168,.18);color:#14806C;}

  /* ============ 防护要点卡 ============ */
  .defense-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .defense-card{
    position:relative;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);padding:26px 24px 24px;box-shadow:var(--sh-1);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .defense-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(13,59,54,.2);}
  .defense-card .d-num{
    position:absolute;top:18px;right:22px;font-size:30px;font-weight:700;
    color:rgba(13,59,54,.1);line-height:1;
  }
  .defense-card h3{font-size:19px;font-weight:600;margin-bottom:10px;display:flex;align-items:center;gap:10px;}
  .defense-card h3 i{color:var(--c-ink-3);font-size:16px;}
  .defense-card p{font-size:14.5px;color:var(--t2);line-height:1.85;}

  /* ============ FAQ ============ */
  .faq-list{border-top:1px solid var(--c-line);}
  .faq-item{border-bottom:1px solid var(--c-line);}
  .faq-q{
    position:relative;display:flex;align-items:center;justify-content:space-between;
    gap:16px;width:100%;min-height:56px;padding:14px 6px 14px 16px;text-align:left;
    font-size:16px;font-weight:600;color:var(--t1);transition:color .16s ease;
  }
  .faq-q::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:4px;height:22px;border-radius:2px;background:var(--c-accent);
    opacity:0;transition:opacity .16s ease;
  }
  .faq-q:hover{color:var(--c-ink-3);}
  .faq-item.is-open .faq-q::before{opacity:1;}
  .faq-icon{
    flex:0 0 26px;width:26px;height:26px;border-radius:8px;
    background:rgba(13,59,54,.06);color:var(--c-ink);font-size:12px;
    display:inline-flex;align-items:center;justify-content:center;
    transition:transform .2s ease,background .2s ease,color .2s ease;
  }
  .faq-item.is-open .faq-icon{transform:rotate(45deg);background:rgba(255,122,47,.16);color:var(--c-accent-h);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease;}
  .faq-a-inner{padding:2px 24px 20px 16px;font-size:15px;color:var(--t2);line-height:1.85;}
  .faq-a-inner p+p{margin-top:10px;}

  /* ============ 相关分类卡 ============ */
  .cat-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
  .cat-card{
    display:block;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
  }
  .cat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(13,59,54,.2);}
  .cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .cat-card-body{padding:18px 20px 22px;}
  .cat-card h3{font-size:17px;font-weight:600;margin-bottom:8px;transition:color .16s ease;}
  .cat-card:hover h3{color:var(--c-ink-3);}
  .cat-card p{font-size:14px;color:var(--t2);line-height:1.75;}
  .cat-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--c-accent-h);}
  .cat-more i{transition:transform .18s ease;}
  .cat-card:hover .cat-more i{transform:translateX(4px);}

  /* ============ CTA ============ */
  .cta-band{
    background:linear-gradient(115deg,var(--c-ink) 0%,var(--c-ink-2) 58%,#1B6154 100%);
    color:#fff;padding:56px 0;
  }
  .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;}
  .cta-inner h2{font-size:28px;font-weight:700;margin-bottom:10px;line-height:1.4;}
  .cta-inner p{font-size:15px;color:rgba(232,241,239,.78);max-width:580px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--c-dark);color:rgba(232,241,239,.7);padding:56px 0 24px;margin-top:auto;}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
  .footer-about{font-size:13.5px;line-height:1.85;color:rgba(232,241,239,.6);max-width:340px;}
  .footer-col h4{font-size:14px;font-weight:600;color:#E8F1EF;margin-bottom:14px;}
  .footer-col ul li+li{margin-top:10px;}
  .footer-col a{font-size:13px;color:rgba(232,241,239,.62);transition:color .16s ease;}
  .footer-col a:hover{color:#fff;}
  .footer-col p{font-size:13px;line-height:1.9;color:rgba(232,241,239,.6);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
    font-size:13px;color:rgba(232,241,239,.5);
  }
  .footer-bottom a{display:inline-flex;align-items:center;gap:6px;transition:color .16s ease;}
  .footer-bottom a:hover{color:#fff;}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .rel-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  }
  @media (max-width:1023px){
    .sidebar{display:none;}
    .mobile-bar{display:flex;}
    .main{margin-left:0;padding-top:var(--mbar-h);}
    body.is-collapsed .main{margin-left:0;}
    .page-hero{padding:28px 0 44px;}
    .page-title{font-size:32px;}
    .section{padding:52px 0;}
    .section-tight{padding:36px 0;}
    .compare-grid{grid-template-columns:1fr;}
    .cat-cards{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .sec-head h2{font-size:26px;}
  }
  @media (max-width:767px){
    .container{padding:0 16px;}
    .page-title{font-size:28px;}
    .page-lead{font-size:15px;}
    .rel-strip{grid-template-columns:1fr;}
    .rel-thumb{flex:0 0 96px;width:96px;height:68px;}
    .defense-grid{grid-template-columns:1fr;}
    .cat-cards{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .sec-head h2{font-size:23px;}
    .cta-inner h2{font-size:22px;}
    .cta-actions{width:100%;flex-direction:column;}
    .cta-actions .btn{width:100%;}
    .compare-col{padding:22px 18px;}
  }

/* roulang page: category4 */
:root{
  --c-ink:#0D3B36;
  --c-ink-2:#155046;
  --c-ink-3:#1E6A5C;
  --c-accent:#FF7A2F;
  --c-accent-h:#E3631B;
  --c-accent-p:#C9520F;
  --c-mint:#2CC5A8;
  --c-bg:#F5F7F4;
  --c-surface:#FFFFFF;
  --c-dark:#082924;
  --t-1:#12211F;
  --t-2:#4A5B58;
  --t-3:#7C8B88;
  --c-line:#E2E8E4;
  --ok:#1E9E6A;
  --warn:#D97706;
  --danger:#D64545;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --sh-1:0 1px 2px rgba(13,59,54,.05),0 8px 24px -14px rgba(13,59,54,.18);
  --sh-2:0 2px 4px rgba(13,59,54,.06),0 18px 36px -18px rgba(13,59,54,.24);
  --sidebar-w:248px;
  --sidebar-w-min:76px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body.page-body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--t-1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
.page-body a{color:inherit;text-decoration:none;}
.page-body img{max-width:100%;display:block;}
.page-body button{font-family:inherit;}
.page-body ul,.page-body ol{margin:0;}
.page-body p{margin:0;}
.fa-num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 布局外壳 ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-ink);color:#E8F1EE;
  display:flex;flex-direction:column;
  padding:20px 14px 18px;z-index:60;
  transition:width .2s ease-out,transform .22s ease-out;
  overflow-y:auto;
}
.app-main{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;flex-direction:column;
  transition:margin-left .2s ease-out;
}
.main-inner{
  width:100%;max-width:1248px;margin:0 auto;
  padding:34px 24px 8px;
  flex:1 0 auto;
}
body.nav-collapsed .app-sidebar{width:var(--sidebar-w-min);}
body.nav-collapsed .app-main{margin-left:var(--sidebar-w-min);}
body.nav-collapsed .logo-text,
body.nav-collapsed .nav-item span,
body.nav-collapsed .side-contact{display:none;}
body.nav-collapsed .nav-item{justify-content:center;padding:0;}
body.nav-collapsed .sidebar-top{justify-content:center;}
body.nav-collapsed .collapse-btn{display:none;}
body.nav-collapsed .brand{justify-content:center;}

/* ---------- 品牌标识块 ---------- */
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.logo-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  background:linear-gradient(135deg,var(--c-accent),#FF9E5E);
  color:#fff;font-size:20px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.logo-title{font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em;}
.logo-sub{font-size:11px;color:rgba(232,241,238,.62);letter-spacing:.03em;white-space:nowrap;}

.sidebar-top{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.08);
}
.collapse-btn{
  width:28px;height:28px;flex:0 0 28px;border-radius:8px;
  border:1px solid rgba(255,255,255,.16);background:transparent;
  color:rgba(232,241,238,.7);font-size:12px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .18s ease-out,color .18s ease-out;
}
.collapse-btn:hover{background:rgba(255,255,255,.1);color:#fff;}

/* ---------- 侧栏导航 ---------- */
.sidebar-nav{display:flex;flex-direction:column;gap:4px;margin-top:18px;flex:1 1 auto;}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:14.5px;color:rgba(232,241,238,.78);
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item i{width:18px;flex:0 0 18px;text-align:center;font-size:15px;}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.is-active{background:rgba(255,255,255,.08);color:#fff;font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;background:var(--c-accent);
}
.nav-item:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

/* ---------- 侧栏底部 ---------- */
.sidebar-foot{
  margin-top:18px;padding-top:16px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;gap:12px;
}
.side-contact{font-size:12.5px;line-height:1.7;color:rgba(232,241,238,.6);}
.side-contact strong{display:block;color:#fff;font-size:13.5px;font-weight:600;margin-bottom:2px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-h);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-accent:active{background:var(--c-accent-p);transform:translateY(0);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.3);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.55);}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-ink);}
.btn-outline:hover{border-color:var(--c-ink-3);background:rgba(13,59,54,.06);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 14px;font-size:14px;border-radius:9px;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  background:var(--c-ink);color:#fff;align-items:center;gap:12px;
  padding:0 14px;box-shadow:0 4px 18px -10px rgba(8,41,36,.6);
}
.mobile-bar .brand{flex:1 1 auto;}
.burger{
  width:38px;height:38px;flex:0 0 38px;border-radius:10px;
  border:1px solid rgba(255,255,255,.18);background:transparent;color:#fff;
  font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .18s ease-out;
}
.burger:hover{background:rgba(255,255,255,.1);}
.sidebar-overlay{
  display:none;position:fixed;inset:0;background:rgba(8,41,36,.5);
  z-index:55;opacity:0;visibility:hidden;
  transition:opacity .22s ease-out,visibility .22s ease-out;
}
.sidebar-overlay.is-open{opacity:1;visibility:visible;}

@media (max-width:1023px){
  .app-sidebar{width:280px;transform:translateX(-100%);box-shadow:8px 0 32px -18px rgba(0,0,0,.6);}
  .app-sidebar.is-open{transform:translateX(0);}
  .app-main{margin-left:0;padding-top:56px;}
  .mobile-bar{display:flex;}
  .sidebar-overlay{display:block;}
  .main-inner{padding:22px 16px 8px;}
}

/* ---------- 容器与文本 ---------- */
.page-body .container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (max-width:1023px){
  .page-body .container{padding-left:16px;padding-right:16px;}
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--t-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--t-3);transition:color .18s ease-out;}
.breadcrumb a:hover{color:var(--c-ink-3);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:#B6C2BE;}
.breadcrumb .current{color:var(--t-3);}

.page-head{margin-bottom:34px;}
.page-head h1{
  font-size:clamp(30px,4vw,44px);line-height:1.25;font-weight:700;
  letter-spacing:-.015em;margin:14px 0 0;color:var(--t-1);
}
.page-lead{
  font-size:16.5px;line-height:1.85;color:var(--t-2);
  max-width:760px;margin-top:14px;
}
.head-tags{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:20px 0 0;}
.head-tags li{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--c-ink-2);background:rgba(13,59,54,.06);
  border:1px solid rgba(13,59,54,.1);border-radius:999px;padding:6px 12px;
}
.head-tags li i{color:var(--c-mint);font-size:12px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;
  padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.01em;
}
.badge-mint{background:rgba(44,197,168,.14);color:#157A66;}
.badge-accent{background:rgba(255,122,47,.14);color:#B54A0E;}
.badge-ink{background:rgba(13,59,54,.08);color:var(--c-ink-2);}

/* ---------- 板块 ---------- */
.block{margin-top:68px;scroll-margin-top:72px;}
@media (max-width:1023px){
  .block{margin-top:48px;}
  .block:first-of-type{margin-top:32px;}
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:16px;flex-wrap:wrap;margin-bottom:24px;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:700;
  letter-spacing:-.012em;margin:0;
}
.section-sub{font-size:14.5px;color:var(--t-2);margin-top:8px;max-width:660px;}
.link-more{
  font-size:14px;font-weight:600;color:var(--c-ink-2);
  display:inline-flex;align-items:center;gap:6px;
  transition:color .18s ease-out;
}
.link-more i{transition:transform .18s ease-out;}
.link-more:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
}
.card-pad{padding:26px 26px 28px;}
@media (max-width:600px){.card-pad{padding:20px 18px 22px;}}

/* ---------- 分栏 ---------- */
.split-7-5{display:grid;grid-template-columns:1fr;gap:24px;}
.split-5-7{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:1024px){
  .split-7-5{grid-template-columns:7fr 5fr;}
  .split-5-7{grid-template-columns:5fr 7fr;}
}

/* ---------- 表单卡片 ---------- */
.form-card{position:relative;overflow:hidden;padding-top:30px;}
.form-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--c-accent),var(--c-mint));
}
.form-card h2{font-size:23px;font-weight:700;margin:0 0 8px;letter-spacing:-.01em;}
.card-sub{font-size:14px;color:var(--t-2);margin-bottom:24px;}
.field{margin-bottom:18px;}
.field>label{display:block;font-size:14px;font-weight:600;color:var(--t-1);margin-bottom:8px;}
.field .req{color:var(--danger);margin-left:3px;}
.input,.select,.textarea{
  width:100%;height:46px;border:1px solid var(--c-line);border-radius:var(--r-input);
  padding:0 14px;font-size:15px;color:var(--t-1);background:#fff;
  font-family:inherit;
  transition:border-color .18s ease-out,box-shadow .18s ease-out;
}
.textarea{height:auto;min-height:118px;padding:12px 14px;line-height:1.7;resize:vertical;}
.input::placeholder,.textarea::placeholder{color:var(--t-3);}
.input:focus,.select:focus,.textarea:focus{
  outline:none;border-color:var(--c-ink-3);box-shadow:0 0 0 3px rgba(30,106,92,.12);
}
.select{
  appearance:none;-webkit-appearance:none;padding-right:38px;cursor:pointer;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.2l5 5 5-5' stroke='%237C8B88' stroke-width='1.6' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;background-size:12px 8px;
}
.input.is-error,.select.is-error,.textarea.is-error{border-color:var(--danger);}
.input.is-error:focus,.select.is-error:focus,.textarea.is-error:focus{box-shadow:0 0 0 3px rgba(214,69,69,.14);}
.err-text{display:none;font-size:13px;color:var(--danger);margin-top:6px;}
.err-text.show{display:block;}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--t-2);line-height:1.7;}
.check-row input{
  width:18px;height:18px;flex:0 0 18px;margin-top:4px;
  accent-color:var(--c-ink-3);cursor:pointer;
}
.check-row input:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.form-note{
  display:none;align-items:flex-start;gap:10px;
  padding:12px 14px;border-radius:10px;font-size:14px;line-height:1.7;margin-top:16px;
}
.form-note i{margin-top:4px;flex:0 0 auto;}
.form-note.is-ok{display:flex;background:rgba(30,158,106,.1);color:#136F4B;border:1px solid rgba(30,158,106,.28);}
.form-note.is-err{display:flex;background:rgba(214,69,69,.08);color:#A83232;border:1px solid rgba(214,69,69,.26);}
.form-foot{font-size:12.5px;color:var(--t-3);margin-top:14px;line-height:1.7;}

/* ---------- 信息侧栏 ---------- */
.side-stack{display:flex;flex-direction:column;gap:20px;}
.side-card{padding:22px 22px 14px;}
.side-card h3{
  font-size:16.5px;font-weight:700;margin:0 0 14px;
  display:flex;align-items:center;gap:8px;
}
.side-card h3 i{color:var(--c-accent);font-size:15px;}
.contact-card{padding:22px;}
.contact-card h3{margin-bottom:14px;}
.contact-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--t-2);line-height:1.7;}
.contact-list .ico{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  background:rgba(13,59,54,.07);color:var(--c-ink-2);
  display:flex;align-items:center;justify-content:center;font-size:14px;
}
.contact-list strong{display:block;color:var(--t-1);font-size:14.5px;font-weight:600;}

/* ---------- FAQ ---------- */
.faq{max-width:820px;}
.faq-compact{max-width:none;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;
  transition:box-shadow .18s ease-out,border-color .18s ease-out;
}
.faq-item.is-open{border-color:rgba(13,59,54,.2);box-shadow:var(--sh-1);}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;
  gap:16px;height:56px;padding:0 18px 0 22px;background:none;border:0;
  text-align:left;font-size:16px;font-weight:600;color:var(--t-1);cursor:pointer;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:13px;bottom:13px;width:4px;
  border-radius:0 3px 3px 0;background:var(--c-accent);opacity:.9;
}
.faq-q i{color:var(--t-3);font-size:14px;transition:transform .2s ease-out,color .2s ease-out;flex:0 0 auto;}
.faq-item.is-open .faq-q i{transform:rotate(45deg);color:var(--c-accent);}
.faq-q:focus-visible{outline:2px solid var(--c-accent);outline-offset:-3px;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
.faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--t-2);line-height:1.85;}
.faq-a-inner p+p{margin-top:10px;}
.faq-a-inner ul{margin:8px 0 0;padding-left:20px;}
.faq-a-inner li{margin-bottom:4px;}
.faq-compact .faq-item{margin-bottom:10px;border-radius:12px;}
.faq-compact .faq-q{height:auto;min-height:52px;padding:14px 14px 14px 20px;font-size:14.5px;line-height:1.6;}
.faq-compact .faq-q::before{top:12px;bottom:12px;height:auto;}
.faq-compact .faq-a-inner{padding:0 16px 16px 20px;font-size:14px;line-height:1.8;}

/* ---------- 相关内容横条 ---------- */
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media (max-width:1023px){.strip-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:599px){.strip-grid{grid-template-columns:1fr;}}
.strip-card{
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--c-line);border-radius:12px;
  padding:10px;transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.strip-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(13,59,54,.16);}
.strip-thumb{width:92px;height:70px;flex:0 0 92px;border-radius:9px;overflow:hidden;background:#EDF1EE;}
.strip-thumb img{width:100%;height:100%;object-fit:cover;}
.strip-body{min-width:0;}
.strip-title{font-size:14.5px;font-weight:600;line-height:1.5;color:var(--t-1);transition:color .18s ease-out;}
.strip-card:hover .strip-title{color:var(--c-ink-3);}
.strip-desc{font-size:12.5px;color:var(--t-3);margin-top:4px;line-height:1.6;}

/* ---------- 流程步骤 ---------- */
.step-row{
  list-style:none;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.step-item{position:relative;padding-right:8px;}
.step-item::after{
  content:"";position:absolute;left:52px;right:-14px;top:19px;height:1px;
  background:repeating-linear-gradient(90deg,var(--c-line) 0 6px,transparent 6px 12px);
}
.step-item:last-child::after{display:none;}
.step-num{
  width:38px;height:38px;border-radius:50%;background:var(--c-ink);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;
}
.step-item h3{font-size:17px;font-weight:600;margin:14px 0 6px;line-height:1.5;}
.step-item p{font-size:14px;color:var(--t-2);line-height:1.75;}
@media (max-width:1023px){
  .step-row{grid-template-columns:repeat(2,1fr);gap:24px 20px;}
  .step-item::after{display:none;}
}
@media (max-width:600px){
  .step-row{grid-template-columns:1fr;}
}

/* ---------- 保障区 ---------- */
.assure-visual{overflow:hidden;display:flex;flex-direction:column;}
.assure-img{aspect-ratio:16/10;overflow:hidden;background:#EDF1EE;}
.assure-img img{width:100%;height:100%;object-fit:cover;}
.assure-body{padding:22px 24px 26px;}
.assure-body h3{font-size:19px;font-weight:700;margin:0 0 10px;line-height:1.5;}
.assure-body p{font-size:14.5px;color:var(--t-2);line-height:1.8;}
.assure-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.assure-item{
  display:flex;gap:14px;padding:16px 18px;background:#fff;
  border:1px solid var(--c-line);border-radius:12px;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.assure-item:hover{transform:translateY(-2px);box-shadow:var(--sh-1);border-color:rgba(13,59,54,.16);}
.assure-ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:rgba(44,197,168,.14);color:#157A66;
  display:flex;align-items:center;justify-content:center;font-size:15px;
}
.assure-item h3{font-size:15.5px;font-weight:600;margin:0 0 4px;line-height:1.5;}
.assure-item p{font-size:14px;color:var(--t-2);line-height:1.75;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:var(--c-dark);color:#fff;padding:46px 40px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  background:radial-gradient(circle,rgba(255,122,47,.35),transparent 68%);
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;
  gap:26px;flex-wrap:wrap;
}
.cta-inner h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.4;margin:0 0 10px;letter-spacing:-.01em;}
.cta-inner p{font-size:15px;color:rgba(232,241,238,.8);max-width:600px;line-height:1.8;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}
@media (max-width:1023px){
  .cta-band{padding:34px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 190px;}
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-dark);color:rgba(232,241,238,.72);
  margin-top:72px;padding:52px 0 0;flex:0 0 auto;
}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:34px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-about{font-size:13.5px;line-height:1.8;color:rgba(232,241,238,.62);max-width:340px;}
.footer-col h4{
  font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;letter-spacing:.02em;
}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
.footer-col a,.footer-col p{
  font-size:13px;color:rgba(232,241,238,.62);line-height:1.8;
  transition:color .18s ease-out;
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:38px;padding:18px 0 20px;font-size:13px;color:rgba(232,241,238,.55);
}
.footer-bottom a{color:rgba(232,241,238,.72);display:inline-flex;align-items:center;gap:6px;transition:color .18s ease-out;}
.footer-bottom a:hover{color:#fff;}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .site-footer{padding-top:38px;margin-top:52px;}
}