/* roulang page: index */
:root{
    --c-primary:#0F3D3A;
    --c-primary-700:#0B2E2B;
    --c-primary-050:#EDF3F0;
    --c-accent:#F26B21;
    --c-accent-050:#FDEDE3;
    --c-bg:#F7F6F2;
    --c-surface:#FFFFFF;
    --c-line:#E4E1DA;
    --c-text:#16211F;
    --c-muted:#5C6866;
    --r-card:14px;
    --r-btn:10px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,61,58,.06);
    --sh-2:0 10px 24px rgba(15,61,58,.10);
    --nav-w:232px;
    --nav-w-mini:88px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    text-rendering:optimizeLegibility;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
  ul,ol{list-style:none;}
  h1,h2,h3{line-height:1.35;letter-spacing:-0.01em;}
  .num{font-variant-numeric:tabular-nums;}

  /* ---------- 布局骨架 ---------- */
  .app{padding-left:0;padding-top:64px;}
  @media (min-width:1024px){
    .app{padding-left:var(--nav-w-mini);padding-top:0;}
  }
  @media (min-width:1280px){
    .app{padding-left:var(--nav-w);}
  }
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .wrap{padding:0 32px;} }
  @media (min-width:1024px){ .wrap{padding:0 48px;} }
  .section{padding:56px 0;}
  @media (min-width:1024px){ .section{padding:92px 0;} }
  .section-tight{padding:44px 0;}
  @media (min-width:1024px){ .section-tight{padding:68px 0;} }
  .divide-top{border-top:1px solid var(--c-line);}

  /* ---------- 左侧竖向导航 ---------- */
  .sidenav{
    position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
    background:var(--c-surface);border-right:1px solid var(--c-line);
    display:none;flex-direction:column;z-index:60;
  }
  @media (min-width:1024px){
    .sidenav{display:flex;width:var(--nav-w-mini);}
  }
  @media (min-width:1280px){
    .sidenav{width:var(--nav-w);}
  }
  .brand{
    display:flex;align-items:center;gap:10px;
    padding:22px 18px;
    font-weight:700;letter-spacing:.02em;color:var(--c-primary);
  }
  .brand-mark{
    flex:0 0 auto;width:36px;height:36px;border-radius:11px;
    background:var(--c-primary);display:flex;align-items:center;justify-content:center;
  }
  .brand-mark svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
  .brand-text{font-size:15px;line-height:1.3;}
  .brand-mini{display:none;font-size:15px;}
  @media (min-width:1024px) and (max-width:1279px){
    .brand{justify-content:center;padding:20px 8px;}
    .brand-full{display:none;}
    .brand-mini{display:inline;}
  }
  .sidenav-nav{flex:1 1 auto;padding:8px 12px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    padding:12px 14px;border-radius:12px;
    color:var(--c-muted);font-size:15px;font-weight:600;
    transition:background .2s ease-out,color .2s ease-out;
  }
  .nav-item:hover{background:var(--c-primary-050);color:var(--c-primary);}
  .nav-item.is-active{background:var(--c-primary-050);color:var(--c-primary);}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;
    border-radius:0 4px 4px 0;background:var(--c-primary);
  }
  .nav-ico{flex:0 0 auto;width:20px;height:20px;display:flex;align-items:center;justify-content:center;}
  .nav-ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
  @media (min-width:1024px) and (max-width:1279px){
    .sidenav-nav{padding:8px 10px;}
    .nav-item{justify-content:center;padding:14px 0;}
    .nav-item .nav-label{display:none;}
    .nav-item:hover .nav-label{
      display:block;position:fixed;left:96px;
      background:var(--c-primary-700);color:#fff;font-size:13px;font-weight:600;
      padding:6px 12px;border-radius:8px;white-space:nowrap;box-shadow:var(--sh-2);
    }
  }
  .sidenav-foot{padding:16px 14px 22px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:8px;}
  @media (min-width:1024px) and (max-width:1279px){
    .sidenav-foot{padding:14px 10px 18px;}
    .sidenav-foot .btn{padding:0;justify-content:center;font-size:0;}
    .sidenav-foot .btn svg{width:18px;height:18px;}
  }

  /* ---------- 移动端顶栏 ---------- */
  .mobile-bar{
    position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
    background:rgba(255,255,255,.96);backdrop-filter:saturate(1.1) blur(6px);
    border-bottom:1px solid var(--c-line);
    display:flex;align-items:center;justify-content:space-between;
    padding:0 18px;
  }
  @media (min-width:1024px){ .mobile-bar{display:none;} }
  .mobile-bar .brand{padding:0;font-size:15px;}
  .menu-btn{
    width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-line);
    background:var(--c-surface);display:flex;align-items:center;justify-content:center;cursor:pointer;
    transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .menu-btn:hover{border-color:var(--c-primary);box-shadow:var(--sh-1);}
  .menu-btn svg{width:20px;height:20px;stroke:var(--c-primary);fill:none;stroke-width:1.6;stroke-linecap:round;}

  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:280px;z-index:90;
    background:var(--c-surface);border-left:1px solid var(--c-line);
    transform:translateX(100%);transition:transform .24s ease-out;
    display:flex;flex-direction:column;padding:18px;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(11,46,43,.45);z-index:80;
    opacity:0;visibility:hidden;transition:opacity .24s ease-out,visibility .24s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line);}
  .drawer-close{
    width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;
    display:flex;align-items:center;justify-content:center;cursor:pointer;
  }
  .drawer-close svg{width:18px;height:18px;stroke:var(--c-primary);fill:none;stroke-width:1.6;stroke-linecap:round;}
  .drawer-nav{padding-top:12px;display:flex;flex-direction:column;gap:4px;}
  .drawer-link{
    display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:12px;
    font-size:15px;font-weight:600;color:var(--c-muted);
  }
  .drawer-link:hover{background:var(--c-primary-050);color:var(--c-primary);}
  .drawer-link.is-active{background:var(--c-primary-050);color:var(--c-primary);}
  .drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px;}

  /* ---------- 按钮 / 标签 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
    border:1.5px solid transparent;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,border-color .2s ease-out,color .2s ease-out;
  }
  .btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}
  .btn-accent{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1);}
  .btn-accent:hover{filter:brightness(.92);transform:translateY(-1px);box-shadow:var(--sh-2);}
  .btn-accent:active{transform:translateY(0);box-shadow:var(--sh-1);}
  .btn-outline{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
  .btn-outline:hover{background:rgba(15,61,58,.08);}
  .btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.45);color:#fff;}
  .btn-light:hover{background:rgba(255,255,255,.2);}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}
  .btn-block{width:100%;}
  .btn:focus-visible,.nav-item:focus-visible,.drawer-link:focus-visible,.faq summary:focus-visible,.link-arrow:focus-visible,input:focus-visible{
    outline:2px solid var(--c-accent);outline-offset:2px;
  }
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-primary);
    border-bottom:1px solid currentColor;padding-bottom:2px;text-underline-offset:4px;
    transition:color .2s ease-out,border-color .2s ease-out;
  }
  .link-arrow:hover{color:var(--c-accent);border-color:var(--c-accent);}
  .link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;}

  .eyebrow{
    display:inline-flex;align-items:center;gap:10px;
    font-size:12px;font-weight:600;letter-spacing:.2em;color:var(--c-primary);text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:20px;height:1px;background:var(--c-primary);}
  .chip{
    display:inline-flex;align-items:center;gap:6px;
    height:26px;padding:0 12px;border-radius:var(--r-pill);
    background:var(--c-primary-050);color:var(--c-primary);
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
  }
  .chip-accent{background:var(--c-accent-050);color:#B54A0F;}
  .pill-outline{
    display:inline-flex;align-items:center;gap:8px;
    height:34px;padding:0 16px;border-radius:var(--r-pill);
    border:1px solid rgba(255,255,255,.45);color:#fff;font-size:13px;font-weight:500;
  }

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;background:var(--c-primary-700);}
  .hero-bg{
    position:absolute;inset:0;background-size:cover;background-position:center;
  }
  .hero-mask{
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(11,46,43,.92) 0%,rgba(11,46,43,.80) 48%,rgba(11,46,43,.62) 100%);
  }
  .hero-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;display:grid;gap:36px;}
  @media (min-width:1024px){
    .hero-inner{padding-top:104px;padding-bottom:104px;grid-template-columns:1.08fr .92fr;align-items:center;gap:56px;}
  }
  .hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
  .hero h1{
    color:#fff;
    font-size:clamp(28px,4vw,44px);
    font-weight:800;
    line-height:1.25;
    letter-spacing:-0.01em;
  }
  .hero-sub{
    margin-top:16px;color:rgba(255,255,255,.86);
    font-size:clamp(16px,1.6vw,19px);line-height:1.7;
    max-width:32em;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;color:rgba(255,255,255,.82);font-size:14px;}
  .hero-points li{display:flex;align-items:center;gap:8px;}
  .hero-points svg{width:16px;height:16px;stroke:var(--c-accent);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
  .hero-media{position:relative;}
  .hero-media img{
    width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:16px;
    border:1px solid rgba(255,255,255,.18);box-shadow:0 20px 46px rgba(0,0,0,.32);
  }
  .hero-badge{
    position:absolute;left:-6px;bottom:-18px;
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:14px 18px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:12px;
  }
  .hero-badge svg{width:22px;height:22px;stroke:var(--c-primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
  .hero-badge strong{display:block;font-size:14px;color:var(--c-text);}
  .hero-badge span{display:block;font-size:12.5px;color:var(--c-muted);}
  @media (max-width:639px){
    .hero-badge{left:12px;bottom:12px;padding:12px 14px;}
  }

  /* ---------- 通用板块头 ---------- */
  .sec-header{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px;}
  .sec-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-top:12px;}
  .sec-desc{margin-top:12px;max-width:44em;color:var(--c-muted);font-size:15.5px;line-height:1.85;}

  /* ---------- 登录路径三步条 ---------- */
  .steps{position:relative;display:grid;gap:26px;margin-top:34px;}
  @media (min-width:900px){ .steps{grid-template-columns:repeat(3,1fr);gap:32px;} }
  .steps::before{
    content:"";display:none;
  }
  @media (min-width:900px){
    .steps::before{
      display:block;position:absolute;left:26px;right:26px;top:17px;height:0;
      border-top:1.5px dashed rgba(15,61,58,.28);
    }
  }
  .step{position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px 22px 22px;box-shadow:var(--sh-1);}
  .step-no{
    position:relative;z-index:2;display:inline-flex;align-items:center;justify-content:center;
    width:36px;height:36px;border-radius:50%;background:var(--c-primary);color:#fff;
    font-size:13.5px;font-weight:700;letter-spacing:.04em;
    box-shadow:0 0 0 6px var(--c-bg);
  }
  .step-dot{position:absolute;right:22px;top:28px;width:8px;height:8px;border-radius:50%;background:var(--c-accent);}
  .step h3{margin-top:16px;font-size:18px;font-weight:600;}
  .step p{margin-top:8px;color:var(--c-muted);font-size:14.5px;line-height:1.8;}

  /* ---------- 对比表 ---------- */
  .table-wrap{
    border:1px solid var(--c-line);border-radius:16px;overflow:hidden;
    background:var(--c-surface);box-shadow:var(--sh-1);
  }
  .cmp-table{width:100%;border-collapse:collapse;}
  .cmp-table thead th{
    background:var(--c-primary);color:#fff;font-weight:600;font-size:14.5px;
    height:54px;padding:0 18px;text-align:center;letter-spacing:.02em;
  }
  .cmp-table thead th:first-child{text-align:left;position:sticky;left:0;background:var(--c-primary);z-index:3;}
  .cmp-table tbody th{
    text-align:left;font-weight:600;font-size:14.5px;color:var(--c-text);
    padding:0 18px;height:56px;border-top:1px solid var(--c-line);background:var(--c-surface);
    position:sticky;left:0;z-index:2;
  }
  .cmp-table tbody td{
    text-align:center;height:56px;border-top:1px solid var(--c-line);
    font-size:14px;color:var(--c-muted);
  }
  .cmp-table tbody tr:hover th,.cmp-table tbody tr:hover td{background:var(--c-primary-050);}
  .cmp-table tbody tr:hover td{color:var(--c-primary);}
  .mark-yes svg{width:18px;height:18px;stroke:var(--c-primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
  .mark-no svg{width:16px;height:16px;stroke:#B9B4A9;fill:none;stroke-width:2;stroke-linecap:round;}
  .cmp-cards{display:none;gap:14px;}
  @media (max-width:1023px){
    .table-wrap{display:none;}
    .cmp-cards{display:grid;}
  }
  .cmp-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:18px 18px 14px;box-shadow:var(--sh-1);}
  .cmp-card h3{font-size:16px;font-weight:600;display:flex;align-items:center;gap:8px;}
  .cmp-card h3 span{font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-primary-050);border-radius:var(--r-pill);padding:2px 10px;}
  .cmp-card dl{margin-top:12px;display:grid;gap:0;}
  .cmp-card .row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 0;border-top:1px solid var(--c-line);}
  .cmp-card .row dt{font-size:14px;color:var(--c-text);font-weight:500;}
  .cmp-card .row dd{margin:0;font-size:13.5px;color:var(--c-muted);display:flex;align-items:center;gap:6px;}
  .cmp-card .row dd svg{width:16px;height:16px;stroke:var(--c-primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
  .cmp-card .row dd.is-no svg{stroke:#B9B4A9;}

  /* ---------- 等级亮点（阶梯式） ---------- */
  .tier-band{background:var(--c-primary-050);border-radius:18px;padding:34px 26px;}
  @media (min-width:1024px){ .tier-band{padding:46px 44px;} }
  .tier-list{display:grid;gap:16px;margin-top:26px;}
  .tier{
    display:grid;gap:14px;align-items:center;
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:20px 22px;box-shadow:var(--sh-1);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  @media (min-width:900px){
    .tier{grid-template-columns:200px 1fr 132px;gap:24px;}
    .tier:nth-child(1){margin-right:64px;}
    .tier:nth-child(2){margin-right:32px;}
    .tier:nth-child(3){margin-right:0;border-color:rgba(242,107,33,.45);}
  }
  .tier:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3);}
  .tier-name{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-primary);}
  .tier-bar{height:6px;border-radius:999px;background:var(--c-primary-050);overflow:hidden;}
  .tier-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));}
  .tier p{margin-top:10px;color:var(--c-muted);font-size:14.5px;line-height:1.8;}
  .tier-tag{justify-self:start;}
  @media (min-width:900px){ .tier-tag{justify-self:end;} }

  /* ---------- 专属内容预览 ---------- */
  .preview-grid{display:grid;gap:20px;}
  @media (min-width:1024px){
    .preview-grid{grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:22px;}
    .preview-main{grid-row:1 / span 2;}
  }
  .pcard{
    position:relative;overflow:hidden;border-radius:var(--r-card);
    border:1px solid var(--c-line);background:var(--c-surface);box-shadow:var(--sh-1);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .pcard:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3);}
  .pcard-media{position:relative;overflow:hidden;background:var(--c-primary-050);}
  .pcard-media img{width:100%;height:100%;object-fit:cover;}
  .preview-main .pcard-media{aspect-ratio:16/10;}
  .preview-side .pcard-media{aspect-ratio:16/9;}
  .pcard-lock{
    position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
    background:rgba(11,46,43,.62);
  }
  .pcard-lock span{
    width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.4);display:flex;align-items:center;justify-content:center;
  }
  .pcard-lock svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;}
  .pcard-body{padding:20px 20px 22px;}
  .pcard-body h3{font-size:18px;font-weight:600;margin-top:12px;}
  .pcard-body p{margin-top:10px;color:var(--c-muted);font-size:14.5px;line-height:1.8;}
  .pcard-body .btn{margin-top:18px;}

  /* ---------- 列表卡片 ---------- */
  .card-grid{display:grid;gap:22px;}
  @media (min-width:640px){ .card-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .card-grid{grid-template-columns:repeat(3,1fr);} }
  .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 .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3);}
  .card-cover{aspect-ratio:16/9;background:var(--c-primary-050);overflow:hidden;}
  .card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .28s ease-out;}
  .card:hover .card-cover img{transform:scale(1.03);}
  .card-body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1 1 auto;}
  .card-body h3{
    font-size:17px;font-weight:600;line-height:1.5;margin-top:10px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-body p{
    margin-top:10px;color:var(--c-muted);font-size:14px;line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-meta{
    margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--c-muted);
  }
  .empty-state{
    border:1.5px dashed rgba(15,61,58,.35);background:var(--c-primary-050);
    border-radius:16px;padding:46px 24px;text-align:center;
  }
  .empty-state svg{width:32px;height:32px;stroke:var(--c-primary);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;margin:0 auto;}
  .empty-state p{margin-top:14px;color:var(--c-muted);font-size:14.5px;}
  .empty-state .btn{margin-top:18px;}

  /* ---------- FAQ ---------- */
  .faq-list{border:1px solid var(--c-line);border-radius:16px;background:var(--c-surface);overflow:hidden;box-shadow:var(--sh-1);}
  .faq{border-top:1px solid var(--c-line);}
  .faq:first-child{border-top:0;}
  .faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
    min-height:56px;padding:14px 22px;font-size:16px;font-weight:600;color:var(--c-text);
    transition:color .2s ease-out,background-color .2s ease-out;
  }
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary:hover{background:var(--c-primary-050);color:var(--c-primary);}
  .faq summary .caret{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
    display:flex;align-items:center;justify-content:center;transition:transform .2s ease-out,border-color .2s ease-out;
  }
  .faq summary .caret svg{width:14px;height:14px;stroke:var(--c-primary);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
  .faq[open] summary{color:var(--c-primary);}
  .faq[open] summary .caret{transform:rotate(180deg);border-color:var(--c-primary);}
  .faq-body{padding:0 22px 20px;color:var(--c-muted);font-size:15px;line-height:1.85;max-width:56em;animation:fadeIn .2s ease-out;}
  @keyframes fadeIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}

  /* ---------- CTA ---------- */
  .cta{
    position:relative;overflow:hidden;border-radius:20px;background:var(--c-primary-700);
    padding:46px 26px;
  }
  @media (min-width:1024px){ .cta{padding:64px 56px;} }
  .cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;}
  .cta-mask{position:absolute;inset:0;background:linear-gradient(95deg,rgba(11,46,43,.94),rgba(11,46,43,.74));}
  .cta-inner{position:relative;z-index:2;display:grid;gap:30px;}
  @media (min-width:1024px){ .cta-inner{grid-template-columns:1.1fr .9fr;align-items:center;gap:48px;} }
  .cta h2{color:#fff;font-size:clamp(22px,2.8vw,32px);font-weight:700;}
  .cta p{margin-top:14px;color:rgba(255,255,255,.82);font-size:15.5px;line-height:1.85;max-width:34em;}
  .cta-form{
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);
    border-radius:16px;padding:22px;
  }
  .cta-form label{display:block;font-size:13.5px;font-weight:600;color:#fff;margin-bottom:8px;}
  .cta-form input{
    width:100%;height:48px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.28);
    background:rgba(255,255,255,.96);padding:0 14px;font-size:15px;color:var(--c-text);
  }
  .cta-form input::placeholder{color:#9AA5A1;}
  .cta-form input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(242,107,33,.35);outline:none;}
  .cta-form .btn{margin-top:16px;}
  .cta-form small{display:block;margin-top:12px;color:rgba(255,255,255,.66);font-size:12.5px;line-height:1.7;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-primary-700);color:#C9D8D3;margin-top:0;}
  .footer-grid{display:grid;gap:32px;padding:56px 0 40px;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr;} }
  @media (min-width:1024px){ .footer-grid{padding:64px 0 46px;gap:44px;} }
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;letter-spacing:.02em;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.12);}
  .footer-brand .brand-mark svg{stroke:#fff;}
  .site-footer p{margin-top:14px;font-size:14px;line-height:1.85;color:#A9BCB6;max-width:30em;}
  .footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.04em;}
  .footer-links{margin-top:16px;display:grid;gap:10px;}
  .footer-links a{font-size:14px;color:#C9D8D3;transition:color .2s ease-out;}
  .footer-links a:hover{color:var(--c-accent);}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);padding:20px 0 34px;
    display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;
    font-size:13px;color:#93A9A2;
  }
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px;}
  .footer-bottom-links a:hover{color:var(--c-accent);}

  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;}
  }

/* roulang page: article */
:root{
    --c-primary:#0F3D3A;
    --c-primary-700:#0B2E2B;
    --c-primary-050:#EDF3F0;
    --c-accent:#F26B21;
    --c-accent-050:#FDEDE3;
    --c-bg:#F7F6F2;
    --c-surface:#FFFFFF;
    --c-line:#E4E1DA;
    --c-text:#16211F;
    --c-muted:#5C6866;
    --r-card:14px;
    --r-btn:10px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,61,58,.06);
    --sh-2:0 10px 24px rgba(15,61,58,.10);
    --font-stack:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
    --nav-w:232px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:var(--font-stack);
    font-size:16px;
    line-height:1.85;
    font-variant-numeric:tabular-nums;
    text-align:left;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input{font-family:inherit}
  ul,ol{margin:0}
  :focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
  .skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200}
  .skip-link:focus{left:0}

  /* ---------- 左侧竖向导航 ---------- */
  .sidenav{
    position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
    background:var(--c-surface);border-right:1px solid var(--c-line);
    display:flex;flex-direction:column;padding:22px 16px 20px;z-index:60;
  }
  .brand{display:flex;align-items:center;gap:10px;padding:4px 8px 20px;font-weight:700;letter-spacing:.02em;font-size:17px;color:var(--c-primary);line-height:1.3}
  .brand-mark{
    width:36px;height:36px;flex:0 0 36px;border-radius:12px;background:var(--c-primary-050);
    display:grid;place-items:center;color:var(--c-primary);
  }
  .brand-mark svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .sidenav-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;height:48px;padding:0 12px;
    border-radius:12px;color:var(--c-muted);font-size:15px;
    transition:background-color .2s ease-out,color .2s ease-out;
  }
  .nav-item:hover{background:var(--c-primary-050);color:var(--c-primary)}
  .nav-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600}
  .nav-item.is-active::before{
    content:"";position:absolute;left:-16px;top:11px;bottom:11px;width:4px;
    border-radius:0 4px 4px 0;background:var(--c-primary);
  }
  .nav-ico{width:22px;height:22px;flex:0 0 22px;display:grid;place-items:center}
  .nav-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .sidenav-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:18px}
  .sidenav-note{font-size:12px;line-height:1.7;color:var(--c-muted);padding:0 4px}

  /* ---------- 按钮系统 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;
    border-radius:var(--r-btn);border:1.5px solid transparent;background:transparent;
    font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
    transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  .btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
  .btn-primary:hover{background:#DA5E17;transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{border-color:var(--c-primary);color:var(--c-primary)}
  .btn-outline:hover{background:rgba(15,61,58,.08)}
  .btn-outline:active{transform:translateY(1px)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}
  .btn-block{width:100%}
  .btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;
    border-bottom:1px solid currentColor;padding-bottom:2px;transition:color .18s ease-out,border-color .18s ease-out;
  }
  .btn-text:hover{color:var(--c-accent)}

  /* ---------- 页面骨架 ---------- */
  .page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
  .site-main{flex:1;padding-bottom:96px}
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 48px}
  .article-wrap{width:100%;max-width:984px;margin:0 auto;padding:0 48px}

  /* ---------- 顶部栏（移动端） ---------- */
  .topbar{display:none}

  /* ---------- 抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(11,46,43,.45);opacity:0;visibility:hidden;
    transition:opacity .2s ease-out,visibility .2s ease-out;z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:280px;background:var(--c-surface);z-index:80;
    transform:translateX(102%);transition:transform .22s ease-out;
    padding:20px 18px;display:flex;flex-direction:column;gap:8px;box-shadow:-12px 0 32px rgba(11,46,43,.14);
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--c-line)}
  .drawer-close{
    width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:transparent;
    display:grid;place-items:center;color:var(--c-muted);cursor:pointer;transition:background-color .18s ease-out;
  }
  .drawer-close:hover{background:var(--c-primary-050);color:var(--c-primary)}
  .drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
  .drawer .nav-item{height:48px}

  /* ---------- 文章头部 ---------- */
  .article-hero{padding:40px 0 8px}
  .breadcrumb{font-size:14px;color:var(--c-muted)}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0}
  .breadcrumb a{color:var(--c-muted);transition:color .18s ease-out}
  .breadcrumb a:hover{color:var(--c-primary)}
  .breadcrumb .current{color:var(--c-muted);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .breadcrumb .sep{color:#B7BFBB}
  .chip{
    display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
    background:var(--c-primary-050);color:var(--c-primary);font-size:13px;font-weight:600;letter-spacing:.02em;
  }
  .chip-accent{background:var(--c-accent-050);color:#B44A12}
  .article-title{
    font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
    margin:16px 0 14px;max-width:20ch;
  }
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--c-muted)}
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C6CDC9;display:inline-block}
  .hero-rule{height:1px;background:var(--c-line);margin:28px 0 0}

  /* ---------- 正文布局 ---------- */
  .article-layout{
    display:grid;grid-template-columns:minmax(0,720px) 200px;gap:64px;
    justify-content:center;align-items:start;padding-top:36px;
  }
  .article-prose{max-width:720px;font-size:16px;line-height:1.85;color:var(--c-text);word-break:break-word}
  .article-prose p{margin:0 0 1.15em}
  .article-prose h2{
    position:relative;font-size:clamp(21px,2.4vw,26px);line-height:1.35;font-weight:700;
    margin:2.4em 0 .8em;padding-left:16px;
  }
  .article-prose h2::before{
    content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:3px;background:var(--c-primary);
  }
  .article-prose h3{font-size:18px;font-weight:600;line-height:1.5;margin:1.8em 0 .6em}
  .article-prose h2:first-child,.article-prose h3:first-child{margin-top:.4em}
  .article-prose ul,.article-prose ol{padding-left:1.35em;margin:0 0 1.15em;line-height:1.8}
  .article-prose li{margin-bottom:.5em}
  .article-prose blockquote{
    margin:1.5em 0;padding:16px 20px;background:var(--c-primary-050);
    border-left:3px solid var(--c-accent);border-radius:0 12px 12px 0;color:var(--c-text);
  }
  .article-prose blockquote p:last-child{margin-bottom:0}
  .article-prose img{border-radius:12px;margin:1.5em auto}
  .article-prose figure{margin:1.6em 0}
  .article-prose figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px}
  .article-prose a{color:var(--c-primary);border-bottom:1px solid rgba(15,61,58,.35);transition:color .18s ease-out,border-color .18s ease-out}
  .article-prose a:hover{color:var(--c-accent);border-color:var(--c-accent)}
  .article-prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
  .article-prose th,.article-prose td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
  .article-prose th{background:var(--c-primary-050);font-weight:600}
  .article-prose tr:hover td{background:#FBFCFB}
  .article-prose code{background:var(--c-primary-050);padding:2px 6px;border-radius:6px;font-size:14px}

  /* ---------- 侧栏 ---------- */
  .article-aside{position:sticky;top:32px;display:flex;flex-direction:column;gap:16px}
  .aside-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:18px;box-shadow:var(--sh-1);
  }
  .aside-title{
    font-size:12px;letter-spacing:.2em;color:var(--c-primary);font-weight:700;margin:0 0 12px;
    display:flex;align-items:center;gap:8px;
  }
  .aside-title::before{content:"";width:14px;height:2px;background:var(--c-accent);display:inline-block;border-radius:2px}
  .aside-nav{display:flex;flex-direction:column;gap:2px}
  .aside-nav a{
    position:relative;display:block;padding:8px 0 8px 12px;font-size:14px;color:var(--c-muted);
    border-left:2px solid transparent;transition:color .18s ease-out,border-color .18s ease-out;
  }
  .aside-nav a:hover{color:var(--c-primary);border-left-color:rgba(15,61,58,.35)}
  .aside-nav a.is-current{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary)}
  .aside-cta p{font-size:13.5px;line-height:1.75;color:var(--c-muted);margin:0 0 14px}

  /* ---------- 标签行 ---------- */
  .tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line)}
  .tag-row .tag-label{font-size:12px;letter-spacing:.2em;color:var(--c-muted)}
  .tag{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
    border:1px solid var(--c-line);background:var(--c-surface);font-size:13.5px;color:var(--c-muted);
    transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
  }
  .tag:hover{border-color:rgba(15,61,58,.35);color:var(--c-primary);background:var(--c-primary-050)}

  /* ---------- 卡片 ---------- */
  .card{
    position:relative;display:flex;flex-direction:column;background:var(--c-surface);
    border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3)}
  .card-media{position:relative;aspect-ratio:16/9;background:var(--c-primary-050);overflow:hidden}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
  .card:hover .card-media img{transform:scale(1.03)}
  .card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-title{
    font-size:18px;font-weight:600;line-height:1.5;margin:0;color:var(--c-text);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-desc{
    font-size:14px;line-height:1.75;color:var(--c-muted);margin:0;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
  .card-date{font-size:13px;color:var(--c-muted)}
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
  .card-link{position:absolute;inset:0;z-index:2}

  /* ---------- 板块标题 ---------- */
  .section{padding-top:72px}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;padding-top:24px;border-top:1px solid var(--c-line);margin-bottom:26px}
  .eyebrow{
    display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.2em;
    color:var(--c-primary);font-weight:700;margin:0 0 10px;
  }
  .eyebrow::before{content:"";width:16px;height:2px;background:var(--c-accent);border-radius:2px}
  .section-title{font-size:clamp(22px,2.6vw,28px);font-weight:700;line-height:1.35;margin:0}
  .section-sub{font-size:14.5px;color:var(--c-muted);margin:10px 0 0;max-width:62ch}

  /* ---------- 返回入口 ---------- */
  .return-bar{
    margin-top:56px;background:var(--c-primary-050);border:1px solid var(--c-line);border-radius:16px;
    padding:22px 24px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  }
  .return-ico{
    width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:#fff;border:1px solid var(--c-line);
    display:grid;place-items:center;color:var(--c-primary);
  }
  .return-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .return-text{flex:1;min-width:220px}
  .return-text p{margin:0}
  .return-title{font-size:16px;font-weight:600}
  .return-desc{font-size:14px;color:var(--c-muted);line-height:1.75;margin-top:4px !important}

  /* ---------- 空态 ---------- */
  .empty-state{
    border:1.5px dashed rgba(15,61,58,.35);background:var(--c-primary-050);border-radius:16px;
    padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
  }
  .empty-state svg{width:34px;height:34px;fill:none;stroke:var(--c-primary);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .empty-state p{margin:0;color:var(--c-muted);font-size:15px}

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:72px;border-radius:16px;overflow:hidden;position:relative;
    background:linear-gradient(0deg,rgba(11,46,43,.86),rgba(11,46,43,.86)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color:#fff;padding:52px 44px;
  }
  .cta-band h2{font-size:clamp(22px,3vw,30px);font-weight:700;line-height:1.35;margin:0 0 12px;color:#fff}
  .cta-band p{margin:0 0 22px;color:#C9D8D3;font-size:15px;max-width:60ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px}
  .cta-band .btn-outline{border-color:rgba(255,255,255,.65);color:#fff}
  .cta-band .btn-outline:hover{background:rgba(255,255,255,.14)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-primary-700);color:#C9D8D3;margin-top:0}
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;
    padding:64px 0 40px;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em;color:#fff;font-size:17px;margin-bottom:14px}
  .site-footer .brand-mark{background:rgba(255,255,255,.1);color:#fff}
  .site-footer p{margin:0;font-size:14px;line-height:1.85;color:#C9D8D3;max-width:44ch}
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;margin:0 0 16px;letter-spacing:.04em}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:#C9D8D3;transition:color .18s ease-out}
  .footer-links a:hover{color:var(--c-accent)}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;font-size:13.5px;color:#9FB4AE;
  }
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
  .footer-bottom-links a{color:#9FB4AE;transition:color .18s ease-out}
  .footer-bottom-links a:hover{color:var(--c-accent)}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    :root{--nav-w:88px}
    .sidenav{padding:22px 12px 20px;align-items:center}
    .brand{justify-content:center;padding:4px 0 18px;font-size:0;gap:0}
    .brand-text{display:none}
    .nav-item{justify-content:center;padding:0;width:56px}
    .nav-label{display:none}
    .nav-item.is-active::before{left:-12px}
    .sidenav-note{display:none}
    .sidenav-actions .btn span.btn-text-full{display:none}
    .sidenav-actions .btn{padding:0;width:56px}
    .article-layout{grid-template-columns:minmax(0,720px);justify-content:center}
    .article-aside{display:none}
  }
  @media (max-width:1023px){
    .sidenav{display:none}
    .page{margin-left:0}
    .topbar{
      display:block;position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
      backdrop-filter:blur(8px);border-bottom:1px solid var(--c-line);
    }
    .topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
    .topbar .brand{padding:0;font-size:16px;gap:10px}
    .topbar .brand-text{display:inline}
    .hamburger{
      width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);background:#fff;
      display:grid;place-items:center;color:var(--c-primary);cursor:pointer;
      transition:background-color .18s ease-out,box-shadow .18s ease-out;
    }
    .hamburger:hover{background:var(--c-primary-050);box-shadow:var(--sh-1)}
    .hamburger svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
  }
  @media (max-width:899px){
    .wrap{padding:0 32px}
    .article-wrap{padding:0 32px}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .section{padding-top:56px}
    .article-hero{padding:28px 0 4px}
    .article-title{max-width:none}
  }
  @media (max-width:639px){
    body{font-size:16px}
    .wrap{padding:0 20px}
    .article-wrap{padding:0 20px}
    .card-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px}
    .site-main{padding-bottom:64px}
    .section{padding-top:48px}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px}
    .cta-band{padding:36px 22px}
    .cta-actions .btn{width:100%}
    .return-bar{padding:20px}
    .return-bar .btn{width:100%}
    .breadcrumb .current{max-width:100%;white-space:normal}
    .article-layout{padding-top:24px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: category1 */
:root{
    --c-primary:#0F3D3A;
    --c-primary-700:#0B2E2B;
    --c-primary-050:#EDF3F0;
    --c-accent:#F26B21;
    --c-accent-050:#FDEDE3;
    --c-bg:#F7F6F2;
    --c-surface:#FFFFFF;
    --c-line:#E4E1DA;
    --c-text:#16211F;
    --c-muted:#5C6866;
    --r-card:14px;
    --r-btn:10px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,61,58,.06);
    --sh-2:0 10px 24px rgba(15,61,58,.10);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    text-align:left;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button{font:inherit}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0}
  ul,ol{list-style:none}
  svg{fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  :focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
  .num{font-variant-numeric:tabular-nums}

  /* ============ 容器 ============ */
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 48px}

  /* ============ 左侧竖向导航 ============ */
  .sidenav{
    position:fixed;top:0;left:0;bottom:0;width:232px;z-index:40;
    background:var(--c-surface);border-right:1px solid var(--c-line);
    display:flex;flex-direction:column;padding:26px 18px 20px;
  }
  .brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;border-bottom:1px solid var(--c-line)}
  .brand-mark{
    width:36px;height:36px;flex:none;border-radius:11px;background:var(--c-primary);
    display:grid;place-items:center;color:#fff;
  }
  .brand-mark svg{width:21px;height:21px}
  .brand-text{font-size:15px;font-weight:700;letter-spacing:.02em;line-height:1.3;color:var(--c-primary-700)}
  .sidenav-nav{display:flex;flex-direction:column;gap:6px;margin-top:22px;flex:1}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;height:46px;padding:0 12px;
    border-radius:10px;color:var(--c-muted);font-size:15px;
    transition:background .2s ease-out,color .2s ease-out;
  }
  .nav-item:hover{background:var(--c-primary-050);color:var(--c-primary)}
  .nav-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:4px;height:20px;border-radius:4px;background:var(--c-primary);
  }
  .nav-ico{display:grid;place-items:center;width:20px;height:20px;flex:none}
  .nav-ico svg{width:20px;height:20px}
  .nav-label{white-space:nowrap}
  .sidenav-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,filter .2s ease-out;
  }
  .btn-ico{width:18px;height:18px;flex:none}
  .btn-primary{background:var(--c-accent);color:#fff}
  .btn-primary:hover{filter:brightness(.92);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
  .btn-ghost:hover{background:rgba(15,61,58,.08)}
  .btn-light{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.55);color:#fff}
  .btn-light:hover{background:rgba(255,255,255,.24)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}
  .link-text{
    font-size:15px;font-weight:600;color:var(--c-primary);
    text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;
    transition:color .2s ease-out;
  }
  .link-text:hover{color:var(--c-accent)}

  /* ============ 顶部移动导航 ============ */
  .topbar{
    display:none;position:sticky;top:0;z-index:45;height:64px;
    align-items:center;justify-content:space-between;
    padding:0 20px;background:#fff;border-bottom:1px solid var(--c-line);
  }
  .topbar .brand{padding:0;border:0}
  .burger{
    width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--c-line);
    border-radius:10px;background:#fff;color:var(--c-primary);cursor:pointer;
  }
  .burger svg{width:22px;height:22px}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:280px;z-index:60;
    background:#fff;padding:22px 20px;overflow-y:auto;
    transform:translateX(100%);transition:transform .25s ease-out;
    display:flex;flex-direction:column;gap:6px;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
  .drawer-title{font-weight:700;font-size:15px;color:var(--c-primary-700)}
  .drawer-close{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--c-line);border-radius:10px;background:#fff;color:var(--c-muted);cursor:pointer}
  .drawer .nav-item{height:48px}
  .drawer-foot{margin-top:18px;padding-top:16px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px}
  .drawer-mask{
    position:fixed;inset:0;z-index:55;background:rgba(11,46,43,.45);
    opacity:0;visibility:hidden;transition:opacity .25s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}

  /* ============ 主内容外壳 ============ */
  .page-shell{margin-left:232px;min-height:100vh;display:flex;flex-direction:column}
  main{flex:1}

  /* ============ 页面头 ============ */
  .page-hero{position:relative;overflow:hidden;background:var(--c-primary-700)}
  .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .hero-veil{
    position:absolute;inset:0;
    background:linear-gradient(105deg,rgba(11,46,43,.88) 0%,rgba(11,46,43,.78) 55%,rgba(11,46,43,.72) 100%);
  }
  .hero-inner{position:relative;padding:56px 48px 62px;color:#fff;max-width:1180px;margin:0 auto}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72)}
  .crumb li{display:inline-flex;align-items:center;gap:8px}
  .crumb li + li::before{content:"/";color:rgba(255,255,255,.4)}
  .crumb a:hover{color:var(--c-accent)}
  .crumb [aria-current="page"]{color:rgba(255,255,255,.9)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.2em;font-weight:600;color:var(--c-primary);
  }
  .eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--c-accent)}
  .eyebrow-light{color:rgba(255,255,255,.86)}
  .hero-inner .eyebrow{margin-top:26px}
  .page-hero h1{
    margin-top:14px;font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.25;letter-spacing:-.01em;
    max-width:820px;
  }
  .hero-lead{margin-top:18px;max-width:720px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.82)}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .pill{
    display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;
    border:1px solid rgba(255,255,255,.45);border-radius:var(--r-pill);
    font-size:13px;color:rgba(255,255,255,.9);
  }
  .pill svg{width:15px;height:15px}

  /* ============ 通用板块 ============ */
  .section{padding:84px 0 0}
  .section-line{border-top:1px solid var(--c-line);padding-top:22px;margin-bottom:26px}
  .sec-head{max-width:760px}
  .sec-head h2{margin-top:12px;font-size:clamp(24px,2.6vw,30px);font-weight:700;line-height:1.35;letter-spacing:-.005em}
  .sec-head p{margin-top:14px;color:var(--c-muted);font-size:15.5px;line-height:1.85}
  .sec-flex{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

  /* ============ 筛选 chips ============ */
  .chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .chip{
    display:inline-flex;align-items:center;height:38px;padding:0 18px;
    border:1.5px solid var(--c-line);border-radius:var(--r-pill);
    font-size:14px;color:var(--c-muted);background:var(--c-surface);
    transition:border-color .2s ease-out,color .2s ease-out,background .2s ease-out,transform .2s ease-out;
  }
  .chip:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
  .chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
  .chip.is-on:hover{color:#fff;transform:translateY(-1px)}

  /* ============ 流程列表 ============ */
  .flow-list{margin-top:34px;border-top:1px solid var(--c-line)}
  .flow-item{
    display:grid;grid-template-columns:88px 1fr 220px;gap:26px;align-items:start;
    padding:26px 4px;border-bottom:1px solid var(--c-line);
    transition:background .2s ease-out;
  }
  .flow-item:hover{background:rgba(237,243,240,.6)}
  .flow-num{
    font-size:30px;font-weight:800;line-height:1;color:var(--c-primary);
    font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  }
  .flow-body h3{font-size:18px;font-weight:600;line-height:1.5}
  .flow-body p{margin-top:8px;color:var(--c-muted);font-size:15px;line-height:1.8}
  .flow-tip{
    font-size:13.5px;color:var(--c-primary);background:var(--c-primary-050);
    border-radius:10px;padding:12px 14px;line-height:1.7;
  }

  /* ============ 引用块 ============ */
  .pullquote{
    margin-top:34px;background:var(--c-primary-050);
    border-left:3px solid var(--c-accent);border-radius:10px;
    padding:24px 28px;font-size:16.5px;line-height:1.85;color:var(--c-primary-700);
  }
  .pullquote strong{font-weight:700}

  /* ============ 卡片网格 ============ */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:34px}
  .topic-card{
    display:flex;flex-direction:column;background:var(--c-surface);
    border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:var(--sh-1);overflow:hidden;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3)}
  .card-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-primary-050)}
  .card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1}
  .card-chip{
    align-self:flex-start;display:inline-flex;align-items:center;height:26px;padding:0 11px;
    border-radius:var(--r-pill);background:var(--c-primary-050);color:var(--c-primary);
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
  }
  .card-title{margin-top:12px;font-size:18px;font-weight:600;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-text{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--c-muted);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-meta{
    margin-top:18px;padding-top:14px;border-top:1px solid var(--c-line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--c-muted);
  }
  .card-meta .num{font-variant-numeric:tabular-nums}

  /* ============ FAQ ============ */
  .faq-list{margin-top:32px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;overflow:hidden}
  .faq-item + .faq-item{border-top:1px solid var(--c-line)}
  .faq-item summary{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    min-height:56px;padding:14px 24px;cursor:pointer;font-size:16.5px;font-weight:600;
    list-style:none;transition:background .2s ease-out;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{background:rgba(237,243,240,.7)}
  .faq-ico{width:22px;height:22px;flex:none;color:var(--c-primary);transition:transform .2s ease-out}
  .faq-item[open] .faq-ico{transform:rotate(180deg)}
  .faq-answer{padding:0 24px 22px;max-width:760px;font-size:15.5px;line-height:1.85;color:var(--c-muted);animation:fadeUp .2s ease-out}
  @keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

  /* ============ 底部横向引导条 ============ */
  .guide-strip{margin-top:88px;border-radius:16px;background:var(--c-primary);color:#fff;overflow:hidden}
  .guide-strip-inner{
    display:flex;align-items:center;gap:24px;padding:30px 34px;flex-wrap:wrap;
  }
  .strip-ico{
    width:54px;height:54px;flex:none;border-radius:14px;
    background:rgba(255,255,255,.12);display:grid;place-items:center;
  }
  .strip-ico svg{width:26px;height:26px}
  .strip-body{flex:1;min-width:220px}
  .strip-body h2{font-size:20px;font-weight:700;line-height:1.45}
  .strip-body p{margin-top:7px;font-size:14.5px;line-height:1.7;color:rgba(255,255,255,.8)}
  .guide-strip .btn{margin-left:auto}

  /* ============ 页脚 ============ */
  .site-footer{margin-top:88px;background:var(--c-primary-700);color:#C9D8D3}
  .site-footer .wrap{padding-top:60px;padding-bottom:26px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;letter-spacing:.02em;font-size:16px}
  .footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.12)}
  .footer-brand .brand-mark svg{width:20px;height:20px;color:#fff}
  .site-footer p{margin-top:16px;font-size:14.5px;line-height:1.85;color:#C9D8D3;max-width:420px}
  .footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em}
  .footer-links{margin-top:16px;display:flex;flex-direction:column;gap:11px}
  .footer-links a{font-size:14.5px;color:#C9D8D3;transition:color .2s ease-out}
  .footer-links a:hover{color:var(--c-accent)}
  .footer-bottom{
    margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13.5px;color:rgba(201,216,211,.85);
  }
  .footer-bottom-links{display:flex;gap:18px;flex-wrap:wrap}
  .footer-bottom-links a:hover{color:var(--c-accent)}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .wrap{padding:0 32px}
    .page-shell{margin-left:88px}
    .sidenav{width:88px;padding:24px 12px 18px;align-items:center}
    .brand{justify-content:center;padding:0 0 18px;width:100%}
    .brand-text{display:none}
    .nav-item{justify-content:center;padding:0;width:56px}
    .nav-label{
      position:absolute;left:64px;z-index:5;white-space:nowrap;
      background:var(--c-primary-700);color:#fff;font-size:13px;padding:6px 11px;border-radius:8px;
      opacity:0;pointer-events:none;transform:translateX(-6px);
      transition:opacity .18s ease-out,transform .18s ease-out;
    }
    .nav-item:hover .nav-label{opacity:1;transform:translateX(0)}
    .sidenav-foot{width:100%}
    .sidenav-foot .btn{width:56px;padding:0}
    .sidenav-foot .btn-label{display:none}
    .hero-inner{padding:48px 32px 54px}
    .flow-item{grid-template-columns:72px 1fr;gap:20px}
    .flow-tip{grid-column:2;margin-top:2px}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  }
  @media (max-width:1023px){
    .sidenav{display:none}
    .topbar{display:flex}
    .page-shell{margin-left:0}
    .hero-inner{padding:38px 20px 46px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .site-footer .wrap{padding-top:48px}
  }
  @media (max-width:767px){
    .wrap{padding:0 20px}
    .section{padding:56px 0 0}
    .guide-strip{margin-top:56px}
    .site-footer{margin-top:56px}
    .flow-item{grid-template-columns:1fr;gap:12px;padding:22px 2px}
    .flow-tip{grid-column:1}
    .flow-num{font-size:24px}
    .guide-strip-inner{padding:24px 22px}
    .guide-strip .btn{margin-left:0;width:100%}
    .footer-grid{grid-template-columns:1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .hero-tags{gap:8px}
  }
  @media (max-width:639px){
    .card-grid{grid-template-columns:1fr}
    .page-hero h1{font-size:26px}
    .faq-item summary{font-size:15.5px;padding:14px 18px}
    .faq-answer{padding:0 18px 20px}
  }

/* roulang page: category2 */
:root{
    --c-primary:#0F3D3A;
    --c-primary-700:#0B2E2B;
    --c-primary-050:#EDF3F0;
    --c-accent:#F26B21;
    --c-accent-050:#FDEDE3;
    --c-bg:#F7F6F2;
    --c-surface:#FFFFFF;
    --c-line:#E4E1DA;
    --c-text:#16211F;
    --c-muted:#5C6866;
    --r-card:14px;
    --r-btn:10px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,61,58,.06);
    --sh-2:0 10px 24px rgba(15,61,58,.10);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.8;
    font-variant-numeric:tabular-nums;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;border:0}
  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:4px}

  /* ============ 布局骨架 ============ */
  .page-shell{margin-left:232px;min-height:100vh;display:flex;flex-direction:column}
  .container-x{width:100%;max-width:1180px;margin:0 auto;padding:0 48px}
  .section{padding-top:64px}
  .section-head{display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--c-line);padding-top:26px}
  h1.page-title{margin:14px 0 0;font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.01em}
  h2.sec-title{margin:0;font-size:clamp(23px,2.6vw,30px);font-weight:700;line-height:1.35;color:var(--c-text)}
  h3{font-size:17px;font-weight:600;line-height:1.5;margin:0}
  p{margin:0}
  .eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:600;letter-spacing:.2em;color:var(--c-primary)}
  .eyebrow::before{content:"";width:22px;height:1.5px;background:var(--c-accent);display:block;flex:0 0 auto}
  .eyebrow-light{color:#9FD3C4}
  .lede{font-size:16px;line-height:1.85;color:var(--c-muted);max-width:640px}

  /* ============ 左侧竖向导航 ============ */
  .sidenav{
    position:fixed;left:0;top:0;bottom:0;width:232px;
    background:var(--c-surface);border-right:1px solid var(--c-line);
    display:flex;flex-direction:column;padding:22px 14px 20px;z-index:60;
  }
  .nav-logo{display:flex;align-items:center;gap:10px;padding:6px 8px 0;color:var(--c-primary)}
  .nav-logo .brand-mark{display:flex;flex:0 0 auto}
  .nav-logo .brand-mark svg{width:26px;height:26px;fill:none;stroke:var(--c-accent);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .nav-logo .brand-text{font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.3}
  .nav-logo .brand-short{display:none;font-size:15px;font-weight:700;letter-spacing:.02em}
  .sidenav-nav{display:flex;flex-direction:column;gap:4px;margin-top:28px}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    padding:11px 12px;border-radius:10px;color:var(--c-muted);
    font-size:15px;line-height:1.4;
    transition:background-color .18s ease-out,color .18s ease-out;
  }
  .nav-item:hover{background:var(--c-primary-050);color:var(--c-primary)}
  .nav-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:4px;height:22px;border-radius:0 4px 4px 0;background:var(--c-primary);
  }
  .nav-ico{display:flex;flex:0 0 auto}
  .nav-ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .nav-label{white-space:nowrap}
  .sidenav-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line)}
  .btn-side{
    display:flex;align-items:center;justify-content:center;gap:8px;
    height:40px;border-radius:var(--r-btn);background:var(--c-accent);color:#fff;
    font-size:14px;font-weight:600;letter-spacing:.02em;
    transition:filter .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  }
  .btn-side:hover{filter:brightness(.92);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-side:active{transform:translateY(0);box-shadow:none}

  /* ============ 移动端顶栏与抽屉 ============ */
  .topbar{display:none}
  .topbar-brand{display:flex;align-items:center;gap:9px;color:var(--c-primary);font-size:16px;font-weight:700;letter-spacing:.02em}
  .topbar-brand svg{width:24px;height:24px;fill:none;stroke:var(--c-accent);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .menu-btn{
    width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
    background:#fff;display:grid;place-items:center;color:var(--c-primary);
  }
  .menu-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(11,46,43,.45);z-index:90;
    opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:280px;max-width:84vw;background:#fff;z-index:95;
    transform:translateX(100%);transition:transform .24s ease-out;
    display:flex;flex-direction:column;padding:16px 14px;overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 6px 14px;border-bottom:1px solid var(--c-line);margin-bottom:14px}
  .drawer-head span{font-size:15px;font-weight:700;color:var(--c-primary)}
  .drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--c-line);display:grid;place-items:center;color:var(--c-primary)}
  .drawer-close svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
  .drawer .nav-item{min-height:48px}
  .drawer-cta{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line)}

  /* ============ 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;
    transition:transform .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out,color .18s ease-out,filter .18s ease-out;
  }
  .btn-primary{background:var(--c-accent);color:#fff}
  .btn-primary:hover{filter:brightness(.92);transform:translateY(-1px);box-shadow:var(--sh-2)}
  .btn-primary:active{transform:translateY(0);box-shadow:none}
  .btn-ghost{background:transparent;color:var(--c-primary);box-shadow:inset 0 0 0 1.5px var(--c-primary)}
  .btn-ghost:hover{background:rgba(15,61,58,.08)}
  .btn-light{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.62)}
  .btn-light:hover{background:rgba(255,255,255,.14)}
  .btn-text{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
    border-bottom:1px solid currentColor;padding-bottom:2px;transition:color .2s ease-out;
  }
  .btn-text:hover{color:var(--c-accent)}
  .btn-text svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

  /* ============ 页面头 ============ */
  .head-band{background:linear-gradient(180deg,#EDF3F0 0%,rgba(237,243,240,.15) 100%);padding:32px 0 46px}
  .crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-size:13px;color:var(--c-muted)}
  .crumb li{display:flex;align-items:center;gap:8px}
  .crumb li:not(:last-child)::after{content:"/";color:#C6C0B4}
  .crumb a:hover{color:var(--c-primary)}
  .crumb [aria-current="page"]{color:var(--c-muted)}
  .head-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:46px;align-items:center;margin-top:18px}
  .head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .head-media{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:4/3;background:var(--c-primary-050);box-shadow:var(--sh-1)}
  .head-media img{width:100%;height:100%;object-fit:cover}
  .head-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,46,43,.10) 0%,rgba(11,46,43,.66) 100%)}
  .head-media-cap{position:absolute;left:20px;right:20px;bottom:18px;z-index:2;color:#fff}
  .head-media-cap strong{display:block;font-size:15px;font-weight:600;line-height:1.5}
  .head-media-cap span{display:block;font-size:13px;color:rgba(255,255,255,.78);margin-top:4px}
  .pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
  .pill{
    display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
    border:1px solid rgba(15,61,58,.24);color:var(--c-primary);font-size:12.5px;background:rgba(255,255,255,.6);
  }

  /* ============ 筛选 ============ */
  .filter-row{display:flex;flex-wrap:wrap;gap:10px;margin:30px 0 28px}
  .chip{
    display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-pill);
    border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-muted);font-size:14px;
    transition:border-color .18s ease-out,color .18s ease-out,background-color .18s ease-out;
  }
  .chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
  .chip.is-on{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

  /* ============ 卡片网格 ============ */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
  .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 .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3)}
  .card-media{aspect-ratio:16/9;background:var(--c-primary-050);overflow:hidden}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease-out}
  .card:hover .card-media img{transform:scale(1.035)}
  .card-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:18px 18px 16px}
  .card-body h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card-body p{font-size:14.5px;line-height:1.75;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
    background:var(--c-primary-050);color:var(--c-primary);font-size:12px;font-weight:600;width:fit-content;
  }
  .card-foot{
    margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding-top:12px;border-top:1px solid var(--c-line);font-size:13px;color:var(--c-muted);
  }
  .more-row{display:flex;justify-content:center;margin-top:34px}

  /* ============ 深色功能带 ============ */
  .func-band{
    margin-top:88px;background:var(--c-primary-700);color:#fff;border-radius:20px;
    padding:46px;display:grid;grid-template-columns:.94fr 1.06fr;gap:46px;
  }
  .func-band h2{color:#fff;margin:12px 0 0;font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4}
  .func-band p{color:#A7C3BC;font-size:15px;line-height:1.85;margin-top:16px}
  .func-list{display:flex;flex-direction:column}
  .func-item{display:flex;gap:16px;padding:20px 0;border-top:1px solid rgba(255,255,255,.14)}
  .func-item:first-child{border-top:0;padding-top:0}
  .func-num{
    flex:0 0 auto;width:36px;height:36px;border-radius:10px;background:rgba(242,107,33,.16);
    color:#F7A778;display:grid;place-items:center;font-size:13px;font-weight:700;
  }
  .func-item h3{color:#fff;font-size:16.5px}
  .func-item p{color:#9DB8B2;font-size:14px;line-height:1.75;margin-top:6px}

  /* ============ 节奏时间线 ============ */
  .rhythm-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:36px}
  .rhythm-item{position:relative;padding-top:28px}
  .rhythm-item::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background-image:linear-gradient(90deg,var(--c-line) 0 6px,transparent 6px 12px);
    background-size:12px 1px;background-repeat:repeat-x;
  }
  .rhythm-item::after{content:"";position:absolute;top:-4px;left:0;width:9px;height:9px;border-radius:50%;background:var(--c-accent)}
  .rhythm-item h3{font-size:17px}
  .rhythm-item p{font-size:14.5px;line-height:1.8;color:var(--c-muted);margin-top:10px}
  .rhythm-num{display:block;font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--c-accent);margin-bottom:8px}

  /* ============ FAQ ============ */
  .faq-list{margin-top:28px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;overflow:hidden}
  .faq-item + .faq-item{border-top:1px solid var(--c-line)}
  .faq-item summary{
    list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:14px 22px;font-size:16px;font-weight:600;cursor:pointer;
    transition:background-color .18s ease-out;
  }
  .faq-item summary:hover{background:var(--c-primary-050)}
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary .chev{flex:0 0 auto;transition:transform .2s ease-out}
  .faq-item summary .chev svg{width:18px;height:18px;fill:none;stroke:var(--c-primary);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
  .faq-item[open] summary .chev{transform:rotate(180deg)}
  .faq-body{padding:0 22px 22px;max-width:760px;color:var(--c-muted);font-size:15px;line-height:1.85;animation:fadeIn .2s ease-out}
  @keyframes fadeIn{from{opacity:0;transform:translateY(-3px)}to{opacity:1;transform:translateY(0)}}

  /* ============ 大图 CTA ============ */
  .cta-figure{position:relative;margin-top:88px;border-radius:20px;overflow:hidden;min-height:360px;display:flex;align-items:flex-end}
  .cta-figure > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .cta-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,46,43,.88) 0%,rgba(11,46,43,.62) 62%,rgba(11,46,43,.42) 100%)}
  .cta-inner{position:relative;z-index:2;padding:46px;color:#fff;max-width:680px}
  .cta-inner h2{color:#fff;font-size:clamp(23px,2.8vw,32px);font-weight:700;line-height:1.35;margin:12px 0 0}
  .cta-inner p{color:#BBD2CC;font-size:15px;line-height:1.85;margin-top:14px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--c-primary-700);color:#C9D8D3;margin-top:96px;padding:56px 0 26px}
  .site-footer .wrap{max-width:1180px;margin:0 auto;padding:0 48px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;letter-spacing:.02em}
  .footer-brand .brand-mark{display:flex}
  .footer-brand .brand-mark svg{width:24px;height:24px;fill:none;stroke:var(--c-accent);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
  .site-footer p{font-size:14px;line-height:1.85;color:#A3BCB6;margin-top:14px;max-width:420px}
  .footer-col h4{margin:0 0 14px;font-size:14px;font-weight:600;color:#fff;letter-spacing:.06em}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{font-size:14px;color:#C9D8D3;transition:color .18s ease-out}
  .footer-links a:hover{color:var(--c-accent)}
  .footer-bottom{
    margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
    font-size:13px;color:#96AEA8;
  }
  .footer-bottom-links{display:flex;flex-wrap:wrap;gap:18px}
  .footer-bottom-links a:hover{color:var(--c-accent)}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .page-shell{margin-left:88px}
    .sidenav{width:88px;padding:22px 10px 20px;align-items:center}
    .nav-logo{padding:6px 0 0;justify-content:center}
    .nav-logo .brand-text{display:none}
    .nav-logo .brand-short{display:inline}
    .sidenav-nav{width:100%;margin-top:24px}
    .nav-item{justify-content:center;padding:12px 0}
    .nav-item .nav-label{
      position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(-4px);
      background:var(--c-primary);color:#fff;font-size:13px;line-height:1;padding:7px 11px;border-radius:8px;
      opacity:0;pointer-events:none;transition:opacity .18s ease-out,transform .18s ease-out;white-space:nowrap;z-index:70;
    }
    .nav-item:hover .nav-label{opacity:1;transform:translateY(-50%) translateX(0)}
    .btn-side{width:100%;height:40px;font-size:13px;padding:0 6px}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  }
  @media (max-width:1023px){
    .sidenav{display:none}
    .page-shell{margin-left:0}
    .topbar{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:64px;padding:0 20px;background:rgba(255,255,255,.97);
      border-bottom:1px solid var(--c-line);position:sticky;top:0;z-index:80;
    }
    .container-x{padding:0 32px}
    .site-footer .wrap{padding:0 32px}
    .head-grid{grid-template-columns:1fr;gap:28px}
    .head-media{aspect-ratio:21/11}
    .func-band{grid-template-columns:1fr;gap:30px;padding:36px 30px;margin-top:64px}
    .rhythm-grid{grid-template-columns:1fr;gap:24px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .cta-figure{margin-top:64px;min-height:320px}
    .cta-inner{padding:34px 30px}
    .section{padding-top:56px}
  }
  @media (min-width:1024px){
    .drawer,.drawer-mask{display:none}
  }
  @media (max-width:639px){
    .container-x{padding:0 20px}
    .site-footer .wrap{padding:0 20px}
    .card-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .head-actions .btn{width:100%}
    .cta-actions .btn{width:100%}
    .func-band{padding:28px 20px}
    .cta-inner{padding:28px 20px}
    .faq-item summary{font-size:15px;padding:14px 16px}
    .faq-body{padding:0 16px 18px}
  }

/* roulang page: category3 */
:root{
  --c-primary:#0F3D3A;
  --c-primary-700:#0B2E2B;
  --c-primary-050:#EDF3F0;
  --c-accent:#F26B21;
  --c-accent-050:#FDEDE3;
  --c-bg:#F7F6F2;
  --c-surface:#FFFFFF;
  --c-line:#E4E1DA;
  --c-text:#16211F;
  --c-muted:#5C6866;
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,61,58,.06);
  --sh-2:0 10px 24px rgba(15,61,58,.10);
  --sidenav-w:232px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
figure{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:8px}
::selection{background:var(--c-accent-050);color:var(--c-primary-700)}

.wrap{max-width:1180px;margin:0 auto;padding:0 48px}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;inset:0 auto 0 0;
  width:var(--sidenav-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  padding:26px 18px 22px;
  z-index:70;
}
.sidenav-top{display:flex;align-items:center;gap:10px;padding:4px 6px 20px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:var(--c-primary);color:#fff;
  display:grid;place-items:center;flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--c-primary-700);white-space:nowrap}
.drawer-close{display:none;width:36px;height:36px;border-radius:9px;place-items:center;color:var(--c-muted);margin-left:auto;transition:.18s ease-out}
.drawer-close:hover{background:var(--c-primary-050);color:var(--c-primary)}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}

.sidenav-nav{display:flex;flex-direction:column;gap:6px;flex:1;padding-top:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 14px 0 18px;border-radius:12px;
  color:var(--c-muted);font-size:15px;font-weight:500;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-item:hover{background:var(--c-primary-050);color:var(--c-primary)}
.nav-item.is-active{background:var(--c-primary-050);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:4px;border-radius:4px;background:var(--c-primary);
}
.nav-ico{width:22px;height:22px;display:grid;place-items:center;flex:0 0 auto}
.nav-ico svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.nav-label{white-space:nowrap}
.sidenav-foot{display:flex;flex-direction:column;gap:10px;padding-top:16px;border-top:1px solid var(--c-line)}

.scrim{
  position:fixed;inset:0;background:rgba(11,46,43,.45);
  opacity:0;pointer-events:none;transition:opacity .2s ease-out;z-index:65;
}
.scrim.is-open{opacity:1;pointer-events:auto}

.content{margin-left:var(--sidenav-w);min-height:100vh;display:flex;flex-direction:column}
.topbar{display:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,filter .2s ease-out,color .2s ease-out;
}
.btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{filter:brightness(.92);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1)}
.btn-outline{background:transparent;color:var(--c-primary);border:1.5px solid var(--c-primary)}
.btn-outline:hover{background:rgba(15,61,58,.08);transform:translateY(-1px)}
.btn-outline:active{transform:translateY(0)}
.btn-onDark{background:var(--c-accent);color:#fff}
.btn-onDark:hover{filter:brightness(.92);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:9px}
.btn:disabled{opacity:.45;pointer-events:none}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--c-primary);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
  transition:color .18s ease-out;
}
.btn-link:hover{color:var(--c-accent)}

/* ---------- 标签 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.chip{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-muted);font-size:14px;transition:.2s ease-out;
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}
.chip-solid{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:12.5px;font-weight:600;letter-spacing:.06em;
}
.chip-soft{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-primary-050);color:var(--c-primary);font-size:12.5px;font-weight:600;
}

/* ---------- 页面头 ---------- */
.page-hero{padding:64px 0 72px;background:var(--c-bg)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.crumbs{margin-bottom:20px}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--c-muted)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li:not(:first-child)::before{content:"/";color:#BCC5C1}
.crumbs a{transition:color .18s ease-out}
.crumbs a:hover{color:var(--c-accent)}
.crumbs li[aria-current="page"]{color:var(--c-muted)}
.page-title{
  font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.01em;
  color:var(--c-primary-700);margin-top:16px;
}
.page-lede{font-size:17px;font-weight:600;color:var(--c-primary);margin-top:14px}
.page-text{margin-top:16px;max-width:580px;color:var(--c-muted);font-size:16px;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.pill-row li{
  border:1px solid var(--c-line);background:var(--c-surface);border-radius:var(--r-pill);
  padding:6px 15px;font-size:13px;color:var(--c-muted);
}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;
  background:var(--c-primary-050);box-shadow:var(--sh-2);
}
.hero-media figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}

/* ---------- 板块 ---------- */
.sec{padding:84px 0}
.sec-tint{background:var(--c-primary-050)}
.sec-white{background:var(--c-surface)}
.sec-head{border-top:1px solid var(--c-line);padding-top:24px;margin-bottom:36px;max-width:780px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:600;letter-spacing:.2em;color:var(--c-primary);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent);border-radius:2px}
.sec-title{font-size:clamp(22px,2.6vw,29px);font-weight:700;line-height:1.35;color:var(--c-primary-700);margin-top:12px}
.sec-sub{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--c-muted)}

/* ---------- 网格与卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3)}
.card-media{aspect-ratio:16/9;background:var(--c-primary-050);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--c-primary-700);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-text{
  font-size:14.5px;line-height:1.75;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-muted);
}
.more-row{display:flex;justify-content:center;margin-top:38px}

/* ---------- 图文双栏 ---------- */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:16px;
  background:var(--c-primary-050);box-shadow:var(--sh-2);
}
.feature-list{margin-top:26px}
.feature-list li{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--c-line)}
.feature-list li:first-child{border-top:0;padding-top:0}
.fi{
  width:34px;height:34px;border-radius:10px;background:var(--c-surface);border:1px solid var(--c-line);
  display:grid;place-items:center;color:var(--c-primary);flex:0 0 auto;
}
.fi svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.feature-list strong{display:block;font-size:16px;font-weight:600;margin-bottom:3px;color:var(--c-text)}
.feature-list p{font-size:14.5px;line-height:1.8;color:var(--c-muted)}

/* ---------- 步骤 ---------- */
.steps-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.step{display:grid;grid-template-columns:auto 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--c-line)}
.step:last-child{border-bottom:0;padding-bottom:0}
.step-no{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:var(--c-surface);border:1px solid rgba(15,61,58,.14);
  color:var(--c-primary);font-weight:700;font-size:15px;
}
.step h3{font-size:17px;font-weight:600;color:var(--c-primary-700);margin-bottom:4px}
.step p{font-size:14.5px;line-height:1.8;color:var(--c-muted)}
.steps-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:16px;background:var(--c-primary-050);box-shadow:var(--sh-2)}

/* ---------- FAQ ---------- */
.faq{border:1px solid var(--c-line);border-radius:16px;background:var(--c-surface);overflow:hidden;box-shadow:var(--sh-1)}
.faq details{border-top:1px solid var(--c-line)}
.faq details:first-child{border-top:0}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:18px 26px;font-size:16px;font-weight:600;color:var(--c-primary-700);
  transition:background-color .2s ease-out;
}
.faq summary:hover{background:var(--c-primary-050)}
.faq summary::-webkit-details-marker{display:none}
.faq .chev{width:20px;height:20px;flex:0 0 auto;color:var(--c-primary);transition:transform .2s ease-out}
.faq .chev svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.faq details[open] .chev{transform:rotate(180deg)}
.faq .ans{
  padding:0 26px 24px;max-width:760px;font-size:15px;line-height:1.85;color:var(--c-muted);
  animation:fadeUp .2s ease-out;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 等级式 CTA ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.tier{
  display:flex;flex-direction:column;gap:18px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
  padding:30px 28px;box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.tier:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:rgba(15,61,58,.3)}
.tier--featured{background:var(--c-primary-700);border-color:var(--c-primary-700);color:#fff;box-shadow:var(--sh-2)}
.tier--featured .tier-name{color:#fff}
.tier-tag{font-size:12.5px;font-weight:600;letter-spacing:.14em;color:var(--c-accent)}
.tier-name{font-size:20px;font-weight:700;color:var(--c-primary-700);line-height:1.4}
.tier-desc{font-size:14.5px;line-height:1.8;color:var(--c-muted)}
.tier--featured .tier-desc{color:#C9D8D3}
.tier-items{display:flex;flex-direction:column;gap:2px;flex:1}
.tier-items li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;line-height:1.7;padding:6px 0;color:var(--c-muted)}
.tier--featured .tier-items li{color:#D6E2DE}
.tier-items svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;fill:none;stroke:var(--c-accent);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tier .btn{width:100%}
.tier-note{font-size:13px;color:var(--c-muted);margin-top:22px;text-align:center}
.tier--featured .tier-note{color:#C9D8D3}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-700);color:#C9D8D3;padding:66px 0 26px;font-size:14.5px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px}
.footer-brand{
  display:flex;align-items:center;gap:12px;color:#fff;font-weight:700;
  font-size:17px;letter-spacing:.02em;margin-bottom:16px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.10);color:var(--c-accent)}
.site-footer p{line-height:1.85;color:#9FB4AE;max-width:400px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;letter-spacing:.05em;margin:0 0 16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:#C9D8D3;transition:color .18s ease-out}
.footer-links a:hover{color:var(--c-accent)}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:#9FB4AE;
}
.footer-bottom-links{display:flex;flex-wrap:wrap;gap:20px}
.footer-bottom-links a:hover{color:var(--c-accent)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidenav-w:88px}
  .sidenav{padding:24px 14px 20px}
  .brand{padding:0;justify-content:center}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item.is-active::before{top:14px;bottom:14px}
  .nav-label{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--c-primary-700);color:#fff;font-size:13px;font-weight:500;
    padding:7px 12px;border-radius:8px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:opacity .18s ease-out;z-index:80;
  }
  .nav-item:hover .nav-label{opacity:1}
  .sidenav-foot{align-items:center}
  .sidenav-cta{padding:0;width:44px}
  .sidenav-cta span{display:none}
}
@media (max-width:1023px){
  .sidenav{
    inset:0 0 0 auto;width:280px;padding:22px 18px;
    transform:translateX(100%);transition:transform .24s ease-out;
    box-shadow:-14px 0 36px rgba(11,46,43,.18);
  }
  .sidenav.is-open{transform:translateX(0)}
  .brand{justify-content:flex-start}
  .brand-text{display:inline}
  .nav-item{justify-content:flex-start;padding:0 14px 0 18px}
  .nav-label{position:static;transform:none;background:none;color:inherit;opacity:1;pointer-events:auto;padding:0;font-size:15px}
  .sidenav-cta{width:100%;padding:0 16px}
  .sidenav-cta span{display:inline}
  .sidenav-foot{align-items:stretch}
  .drawer-close{display:grid}
  .content{margin-left:0}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    position:sticky;top:0;z-index:60;padding:12px 20px;
    background:var(--c-surface);border-bottom:1px solid var(--c-line);
  }
  .hamburger{
    width:44px;height:44px;border-radius:11px;display:grid;place-items:center;
    border:1px solid var(--c-line);color:var(--c-primary);transition:.18s ease-out;
  }
  .hamburger:hover{background:var(--c-primary-050)}
  .hamburger svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
  .hero-grid,.split,.steps-wrap{grid-template-columns:1fr;gap:36px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tier-grid{grid-template-columns:1fr}
  .page-hero{padding:40px 0 52px}
  .sec{padding:60px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .site-footer p{max-width:none}
}
@media (max-width:767px){
  .wrap{padding:0 20px}
  .grid-3{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .faq summary{padding:16px 20px;font-size:15px}
  .faq .ans{padding:0 20px 20px}
  .card-body{padding:18px}
  .tier{padding:26px 22px}
}
@media (max-width:520px){
  .page-title{font-size:28px}
  .pill-row li{font-size:12.5px;padding:5px 12px}
  .chip{height:34px;padding:0 14px;font-size:13px}
}