/* roulang page: index */
:root{
    --brand:#0E3B2E;
    --brand-dark:#08281F;
    --brand-light:#E7F1EC;
    --accent:#F0642D;
    --accent-dark:#C94A1B;
    --accent-light:#FFF0E8;
    --bg:#F6F7F3;
    --card:#FFFFFF;
    --ink:#101A16;
    --muted:#52635B;
    --line:#DCE5DF;
    --brass:#C79A3B;
    --radius-sm:12px;
    --radius:18px;
    --radius-lg:22px;
    --shadow-sm:0 8px 24px rgba(14,59,46,.08);
    --shadow-lg:0 14px 36px rgba(14,59,46,.14);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC','HarmonyOS Sans',system-ui,sans-serif;
    font-size:17px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--ink);}
  p{margin:0 0 1em;}
  ul,ol{margin:0;padding:0;list-style:none;}
  .container-x{width:100%;max-width:1240px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media (min-width:768px){ .container-x{padding-left:24px;padding-right:24px;} }
  @media (min-width:1024px){ .container-x{padding-left:32px;padding-right:32px;} }

  /* 滚动条 */
  ::-webkit-scrollbar{width:10px;height:10px;}
  ::-webkit-scrollbar-track{background:#EDF1ED;}
  ::-webkit-scrollbar-thumb{background:#BFCEC5;border-radius:999px;border:2px solid #EDF1ED;}
  ::-webkit-scrollbar-thumb:hover{background:#9DB3A6;}

  a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
    outline:2px solid var(--accent);
    outline-offset:2px;
    border-radius:8px;
  }

  /* 导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,247,243,.92);
    backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:box-shadow .25s ease,border-color .25s ease,background .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.96);
    border-bottom-color:var(--line);
    box-shadow:0 6px 20px rgba(14,59,46,.08);
  }
  .brand{display:flex;align-items:center;gap:12px;}
  .brand-mark{
    width:42px;height:42px;flex:0 0 42px;border-radius:14px;
    background:linear-gradient(140deg,var(--brand) 0%,var(--brand-dark) 100%);
    color:#fff;display:flex;align-items:center;justify-content:center;
    font-size:19px;font-weight:700;letter-spacing:1px;
    box-shadow:0 6px 16px rgba(14,59,46,.24);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-text b{font-size:17px;font-weight:700;letter-spacing:.5px;color:var(--brand-dark);}
  .brand-text span{font-size:11px;letter-spacing:2px;color:var(--muted);text-transform:uppercase;}
  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;gap:6px;
    padding:10px 16px;border-radius:12px;
    font-size:15px;color:#26382F;font-weight:500;
    transition:background .2s ease,color .2s ease;
  }
  .nav-link:hover{background:var(--brand-light);color:var(--brand-dark);}
  .nav-link::after{
    content:"";position:absolute;left:16px;right:16px;bottom:4px;height:2px;
    background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
    transition:transform .22s ease;
  }
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{background:var(--brand-light);color:var(--brand-dark);font-weight:700;}
  .nav-link.active::after{transform:scaleX(1);}
  .nav-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 22px;border-radius:12px;
    font-size:15px;font-weight:600;letter-spacing:.3px;border:1px solid transparent;
    cursor:pointer;transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 22px rgba(240,100,45,.28);}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 14px 28px rgba(240,100,45,.34);}
  .btn-primary:active{transform:translateY(0);box-shadow:0 6px 14px rgba(240,100,45,.24);}
  .btn-ghost{background:transparent;border-color:rgba(14,59,46,.24);color:var(--brand-dark);}
  .btn-ghost:hover{background:var(--brand-light);border-color:var(--brand);transform:translateY(-1px);}
  .btn-light{background:#fff;color:var(--brand-dark);border-color:rgba(255,255,255,.45);}
  .btn-light:hover{background:#F1F6F2;transform:translateY(-1px);}
  .btn-outline-white{background:transparent;border-color:rgba(255,255,255,.6);color:#fff;}
  .btn-outline-white:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}
  .btn-text{color:var(--brand);font-weight:600;padding:6px 0;min-height:auto;border-radius:6px;}
  .btn-text:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}

  .hamburger{
    width:46px;height:46px;border-radius:12px;border:1px solid var(--line);background:#fff;
    display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
  }
  .hamburger span{width:18px;height:2px;background:var(--brand-dark);border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
  .hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .hamburger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .mobile-menu{
    overflow:hidden;max-height:0;
    transition:max-height .32s ease;
    background:#fff;border-top:1px solid transparent;
  }
  .mobile-menu.open{max-height:520px;border-top-color:var(--line);}
  .mobile-menu .inner{padding:14px 16px 22px;}
  .mobile-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 14px;border-radius:12px;font-size:16px;font-weight:600;color:#233830;
  }
  .mobile-link:hover{background:var(--brand-light);}
  .mobile-link.active{background:var(--brand-light);color:var(--brand-dark);}
  .mobile-link small{font-size:12px;font-weight:500;color:var(--muted);}

  /* Hero */
  .hero{
    position:relative;overflow:hidden;
    min-height:640px;display:flex;align-items:center;
    background-image:linear-gradient(120deg,rgba(8,40,31,.94) 0%,rgba(14,59,46,.86) 46%,rgba(14,59,46,.58) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
  }
  .hero::after{
    content:"";position:absolute;inset:auto 0 -1px 0;height:120px;
    background:linear-gradient(180deg,rgba(246,247,243,0) 0%,rgba(246,247,243,.96) 100%);
    pointer-events:none;
  }
  .hero-track{
    position:absolute;right:-140px;top:-120px;width:620px;height:620px;border-radius:50%;
    border:1px dashed rgba(255,255,255,.18);pointer-events:none;
  }
  .hero-track.two{right:-40px;top:20px;width:400px;height:400px;border-style:solid;border-color:rgba(255,255,255,.1);}
  .hero-net{
    position:absolute;left:0;bottom:0;width:420px;height:260px;opacity:.09;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
    background-size:36px 36px;
  }
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 16px;border-radius:999px;
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.26);
    color:#EAF3EE;font-size:13px;letter-spacing:.6px;
  }
  .hero h1{
    color:#fff;font-size:34px;line-height:1.32;letter-spacing:.4px;margin:22px 0 18px;
  }
  @media (min-width:768px){ .hero h1{font-size:44px;} }
  @media (min-width:1024px){ .hero h1{font-size:52px;line-height:1.26;} }
  .hero-sub{color:rgba(235,244,239,.9);font-size:17px;max-width:620px;margin-bottom:30px;}
  .hero-facts{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 26px;margin-top:46px;
    border-top:1px solid rgba(255,255,255,.18);padding-top:24px;
  }
  @media (min-width:768px){ .hero-facts{grid-template-columns:repeat(4,minmax(0,1fr));} }
  .hero-fact b{display:block;color:#fff;font-size:24px;font-weight:700;letter-spacing:.5px;}
  .hero-fact span{color:rgba(226,238,231,.78);font-size:13px;letter-spacing:.4px;}

  /* 板块 */
  .section{padding:60px 0;}
  @media (min-width:768px){ .section{padding:82px 0;} }
  @media (min-width:1024px){ .section{padding:100px 0;} }
  .section-head{max-width:760px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:2px;color:var(--accent-dark);font-weight:600;text-transform:uppercase;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;border-radius:2px;}
  .h2{font-size:25px;letter-spacing:.3px;margin:14px 0 12px;}
  @media (min-width:768px){ .h2{font-size:33px;} }
  .lead{color:var(--muted);font-size:16px;line-height:1.85;}

  /* 服务 左粘性标题 + 右编号列表 */
  .service-item{
    display:grid;grid-template-columns:64px 1fr;gap:18px;
    padding:26px 24px;border-radius:var(--radius);background:var(--card);
    border:1px solid var(--line);box-shadow:var(--shadow-sm);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .service-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#C6D8CD;}
  .service-num{
    width:56px;height:56px;border-radius:16px;background:var(--brand-light);color:var(--brand-dark);
    display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;letter-spacing:1px;
  }
  .service-item:hover .service-num{background:var(--accent-light);color:var(--accent-dark);}
  .service-item h3{font-size:19px;margin-bottom:8px;}
  .service-item p{color:var(--muted);font-size:15px;margin-bottom:12px;}

  /* 数据条 */
  .stats-wrap{
    background:linear-gradient(120deg,var(--brand-dark) 0%,var(--brand) 100%);
    border-radius:26px;position:relative;overflow:hidden;
  }
  .stats-wrap::before{
    content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;
    border:1px solid rgba(255,255,255,.14);
  }
  .stats-wrap::after{
    content:"";position:absolute;right:40px;bottom:-120px;width:260px;height:260px;border-radius:50%;
    border:1px dashed rgba(255,255,255,.12);
  }
  .stat-cell{padding:26px 22px;border-top:1px solid rgba(255,255,255,.14);}
  @media (min-width:768px){ .stat-cell{border-top:none;border-left:1px solid rgba(255,255,255,.14);} .stat-cell:first-child{border-left:none;} }
  .stat-cell b{display:block;color:#fff;font-size:44px;font-weight:700;letter-spacing:1px;line-height:1.1;}
  .stat-cell b em{font-style:normal;font-size:20px;margin-left:4px;color:var(--accent);}
  .stat-cell span{color:rgba(222,236,229,.8);font-size:13px;letter-spacing:.6px;display:block;margin-top:8px;}

  /* 案例 交错 */
  .case-row{display:grid;gap:28px;align-items:center;}
  @media (min-width:1024px){ .case-row{grid-template-columns:1.05fr .95fr;gap:56px;} .case-row.reverse .case-media{order:2;} }
  .case-media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--line);}
  .case-media img{width:100%;height:300px;object-fit:cover;transition:transform .5s ease;}
  @media (min-width:768px){ .case-media img{height:380px;} }
  .case-media:hover img{transform:scale(1.03);}
  .case-body h3{font-size:22px;margin-bottom:12px;transition:color .2s ease;}
  .case-body h3:hover{color:var(--brand);}
  .case-body p{color:var(--muted);font-size:15.5px;}
  .case-tags{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 18px;}
  .chip{
    display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
    font-size:12.5px;background:var(--brand-light);color:var(--brand-dark);font-weight:600;
  }
  .chip.orange{background:var(--accent-light);color:var(--accent-dark);}

  /* Bento 方案 */
  .bento{display:grid;gap:18px;grid-template-columns:1fr;}
  @media (min-width:768px){ .bento{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .bento{grid-template-columns:repeat(4,1fr);} .bento .wide{grid-column:span 2;} }
  .bento-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
  .bento-card.dark{background:linear-gradient(135deg,var(--brand-dark),var(--brand));border-color:transparent;color:#fff;}
  .bento-card.dark h3,.bento-card.dark .bento-list li{color:#fff;}
  .bento-card.dark p{color:rgba(228,240,233,.82);}
  .bento-card h3{font-size:19px;margin-bottom:10px;}
  .bento-card p{color:var(--muted);font-size:15px;}
  .bento-list{margin-top:14px;display:flex;flex-direction:column;gap:9px;}
  .bento-list li{display:flex;gap:9px;font-size:14.5px;color:#2C3E36;}
  .bento-list li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);margin-top:9px;flex:0 0 7px;}
  .bento-card .btn-text{margin-top:auto;padding-top:16px;}

  /* 内容列表 */
  .post-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;height:100%;
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#C6D8CD;}
  .post-cover{height:186px;overflow:hidden;background:var(--brand-light);}
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
  .post-card:hover .post-cover img{transform:scale(1.03);}
  .post-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
  .post-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;}
  .post-meta time{font-size:12.5px;color:var(--muted);letter-spacing:.4px;}
  .post-body h3{
    font-size:17.5px;line-height:1.5;margin-bottom:10px;transition:color .2s ease;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-card:hover .post-body h3{color:var(--brand);}
  .post-body p{
    color:var(--muted);font-size:14.5px;margin-bottom:16px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-body .btn-text{margin-top:auto;font-size:14px;}
  .empty-state{
    border:1px dashed #C3D3C9;border-radius:var(--radius);
    background:rgba(255,255,255,.7);padding:56px 24px;text-align:center;color:var(--muted);
  }
  .empty-state .dot{
    width:52px;height:52px;border-radius:16px;background:var(--brand-light);color:var(--brand);
    display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;font-weight:700;
  }

  /* FAQ */
  .faq-item{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);
    margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
  }
  .faq-item[open]{border-color:#C6D8CD;box-shadow:var(--shadow-sm);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
    padding:18px 20px;font-size:16.5px;font-weight:600;color:var(--ink);
    border-left:3px solid transparent;transition:border-color .2s ease,background .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{background:var(--brand-light);}
  .faq-item[open] summary{border-left-color:var(--accent);background:var(--brand-light);}
  .faq-icon{
    margin-left:auto;flex:0 0 26px;width:26px;height:26px;border-radius:8px;
    background:var(--brand-light);color:var(--brand-dark);display:flex;align-items:center;justify-content:center;
    font-size:17px;font-weight:700;transition:transform .22s ease,background .2s ease;
  }
  .faq-item[open] .faq-icon{background:var(--accent);color:#fff;transform:rotate(45deg);}
  .faq-answer{padding:4px 20px 22px;color:var(--muted);font-size:15.5px;line-height:1.85;}

  /* 联系 */
  .contact-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:28px 24px;box-shadow:var(--shadow-sm);
  }
  @media (min-width:768px){ .contact-card{padding:34px 32px;} }
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:14px;font-weight:600;color:#26382F;margin-bottom:8px;}
  .input{
    width:100%;height:48px;border-radius:var(--radius-sm);border:1px solid var(--line);
    background:#FBFCFA;padding:0 14px;font-size:15px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  textarea.input{height:auto;padding:12px 14px;min-height:120px;resize:vertical;line-height:1.75;}
  .input:hover{border-color:#C0D2C7;}
  .input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(14,59,46,.12);}
  .check-row{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted);}
  .check-row input{margin-top:5px;width:16px;height:16px;accent-color:var(--brand);}
  .form-note{margin-top:14px;font-size:13.5px;color:var(--muted);}
  .alert{display:none;margin-top:16px;padding:12px 16px;border-radius:var(--radius-sm);font-size:14.5px;}
  .alert.ok{display:block;background:var(--brand-light);color:var(--brand-dark);border:1px solid #C3D9CB;}
  .alert.err{display:block;background:var(--accent-light);color:var(--accent-dark);border:1px solid #F3C6B0;}
  .info-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line);}
  .info-item:last-child{border-bottom:none;}
  .info-item .ico{
    flex:0 0 42px;width:42px;height:42px;border-radius:12px;background:var(--brand-light);color:var(--brand-dark);
    display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  }
  .info-item b{display:block;font-size:15.5px;margin-bottom:2px;}
  .info-item span{font-size:14px;color:var(--muted);}

  /* 页脚 */
  .site-footer{background:var(--brand-dark);color:#E4EFE8;margin-top:0;}
  .site-footer h4{color:#fff;font-size:15px;letter-spacing:1px;margin-bottom:16px;}
  .footer-link{display:block;padding:7px 0;color:rgba(224,238,230,.82);font-size:14.5px;transition:color .2s ease,transform .2s ease;}
  .footer-link:hover{color:var(--accent);transform:translateX(3px);}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding:20px 0 32px;font-size:13.5px;color:rgba(214,231,221,.72);}

  /* 动效 */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
  .reveal.show{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none;}
    html{scroll-behavior:auto;}
  }
  @media (max-width:520px){
    body{font-size:16px;}
    .btn{width:100%;}
    .btn-auto{width:auto;}
    .service-item{grid-template-columns:1fr;gap:14px;padding:22px 18px;}
    .stat-cell b{font-size:36px;}
  }

/* roulang page: article */
:root{
    --primary:#0E3B2E;
    --primary-dark:#08281F;
    --primary-light:#E7F1EC;
    --accent:#F0642D;
    --accent-dark:#C94A1B;
    --accent-light:#FFF0E8;
    --bg:#F6F7F3;
    --card:#FFFFFF;
    --ink:#101A16;
    --ink-2:#52635B;
    --line:#DCE5DF;
    --brass:#C79A3B;
    --radius-card:20px;
    --radius-img:16px;
    --shadow:0 8px 24px rgba(14,59,46,.08);
    --shadow-hover:0 14px 36px rgba(14,59,46,.14);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans",Inter,system-ui,-apple-system,sans-serif;
    font-size:17px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,textarea,select{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.2px;}
  p{margin:0 0 1em;}
  ul,ol{margin:0 0 1em;padding-left:1.3em;}
  ::selection{background:var(--accent-light);color:var(--primary-dark);}

  .container-x{width:100%;max-width:1280px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media (min-width:768px){.container-x{padding-left:24px;padding-right:24px;}}
  @media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px;}}

  /* ---------- Header / Nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.92);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease;
  }
  .site-header.is-scrolled{box-shadow:0 6px 20px rgba(14,59,46,.09);}
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:76px;
  }
  .brand{display:inline-flex;align-items:center;gap:11px;}
  .brand-mark{
    width:42px;height:42px;border-radius:12px;flex:0 0 auto;
    background:linear-gradient(150deg,var(--primary) 0%,var(--primary-dark) 100%);
    color:#fff;display:grid;place-items:center;
    font-size:18px;font-weight:700;letter-spacing:.5px;
    box-shadow:0 6px 16px rgba(14,59,46,.22);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-text b{font-size:17px;color:var(--primary);letter-spacing:.3px;}
  .brand-text span{font-size:11px;color:var(--ink-2);letter-spacing:1.4px;text-transform:uppercase;}

  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:7px;
    padding:10px 14px;border-radius:12px;
    font-size:15px;font-weight:500;color:var(--ink-2);
    transition:background .2s ease,color .2s ease;
  }
  .nav-link:hover{color:var(--primary);background:var(--primary-light);}
  .nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:600;}
  .nav-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;transition:opacity .2s ease;}
  .nav-link.active .nav-dot{opacity:1;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border:1px solid transparent;border-radius:12px;
    padding:0 22px;height:46px;font-size:15.5px;font-weight:600;
    cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(240,100,45,.26);}
  .btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);box-shadow:0 12px 26px rgba(201,74,27,.3);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;color:var(--primary);border-color:var(--line);}
  .btn-ghost:hover{background:var(--primary-light);border-color:#B9CEC3;transform:translateY(-1px);}
  .btn-sm{height:40px;padding:0 18px;font-size:14.5px;}
  .btn:focus-visible,.nav-link:focus-visible,.footer-link:focus-visible,a:focus-visible,button:focus-visible{
    outline:2px solid var(--accent);outline-offset:2px;
  }
  .icon-btn{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:#fff;display:grid;place-items:center;color:var(--primary);
    cursor:pointer;transition:background .2s ease,border-color .2s ease;
  }
  .icon-btn:hover{background:var(--primary-light);border-color:#B9CEC3;}

  .mobile-panel{
    display:none;border-top:1px solid var(--line);background:#fff;
    padding:14px 0 22px;
  }
  .mobile-panel.open{display:block;}
  .mobile-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:13px 14px;border-radius:12px;font-size:16px;color:var(--ink);
  }
  .mobile-link:hover,.mobile-link.active{background:var(--primary-light);color:var(--primary);font-weight:600;}

  /* ---------- Article ---------- */
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);}
  .crumb a{color:var(--ink-2);}
  .crumb a:hover{color:var(--accent);}
  .crumb span.sep{color:#A9BAB0;}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 13px;border-radius:999px;
    font-size:12.5px;font-weight:600;letter-spacing:.2px;
  }
  .badge-primary{background:var(--primary-light);color:var(--primary);}
  .badge-accent{background:var(--accent-light);color:var(--accent-dark);}
  .badge-brass{background:#FBF3E2;color:#8B6A1D;}

  .article-hero{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow);padding:30px 24px;
  }
  @media (min-width:768px){.article-hero{padding:42px 44px;}}
  .article-title{font-size:28px;color:var(--primary-dark);margin:14px 0 12px;line-height:1.35;}
  @media (min-width:768px){.article-title{font-size:40px;}}
  @media (min-width:1200px){.article-title{font-size:44px;}}
  .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:14px;color:var(--ink-2);}
  .article-meta i{color:var(--accent);margin-right:5px;}
  .hero-strip{
    margin-top:26px;border-radius:var(--radius-img);overflow:hidden;position:relative;
    background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 100%);
  }
  .hero-strip img{width:100%;height:auto;opacity:.42;object-fit:cover;aspect-ratio:16/6;}
  .hero-strip figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:14px 20px;
    color:#EAF3EE;font-size:13.5px;background:linear-gradient(to top,rgba(8,40,31,.82),rgba(8,40,31,0));
  }

  .article-shell{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow);padding:28px 22px;
  }
  @media (min-width:768px){.article-shell{padding:44px 52px;}}

  .article-body{max-width:800px;margin:0 auto;font-size:17px;line-height:1.9;color:#1B2721;}
  .article-body p{margin:0 0 1.1em;}
  .article-body h2{
    position:relative;font-size:25px;color:var(--primary-dark);
    margin:1.7em 0 .7em;padding-left:16px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:5px;
    border-radius:4px;background:var(--accent);
  }
  .article-body h3{font-size:20px;color:var(--primary);margin:1.4em 0 .6em;}
  .article-body h4{font-size:17.5px;color:var(--ink);margin:1.2em 0 .5em;}
  .article-body a{color:var(--accent-dark);border-bottom:1px solid rgba(240,100,45,.35);}
  .article-body a:hover{color:var(--accent);}
  .article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em;}
  .article-body li{margin-bottom:.5em;}
  .article-body img{border-radius:var(--radius-img);margin:1.4em 0;box-shadow:var(--shadow);}
  .article-body blockquote{
    margin:1.5em 0;padding:16px 20px;border-left:4px solid var(--accent);
    background:var(--primary-light);border-radius:0 14px 14px 0;color:#1D3A2E;
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15.5px;display:block;overflow-x:auto;}
  .article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;}
  .article-body th{background:var(--primary-light);color:var(--primary-dark);font-weight:600;}
  .article-body code{background:#F1F4F1;border-radius:6px;padding:2px 7px;font-size:14.5px;color:#2A4A3C;}
  .article-body pre{
    background:#F5F7F5;border:1px solid var(--line);border-radius:14px;
    padding:16px 18px;overflow-x:auto;font-size:14.5px;line-height:1.7;
  }
  .article-body pre code{background:none;padding:0;}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}

  .empty-state{
    max-width:640px;margin:0 auto;text-align:center;
    border:1px dashed #C6D5CC;border-radius:var(--radius-card);
    padding:52px 24px;background:#FBFCFA;
  }
  .empty-state .empty-icon{
    width:64px;height:64px;border-radius:18px;margin:0 auto 18px;
    display:grid;place-items:center;background:var(--primary-light);color:var(--primary);
    font-size:24px;
  }
  .empty-state h2{font-size:22px;color:var(--primary-dark);margin-bottom:10px;}
  .empty-state p{color:var(--ink-2);font-size:15.5px;margin-bottom:22px;}

  .article-footnote{
    max-width:800px;margin:32px auto 0;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  }
  .tag{
    display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
    font-size:12.5px;background:#F2F5F2;color:var(--ink-2);border:1px solid var(--line);
  }

  .section-title{font-size:26px;color:var(--primary-dark);}
  @media (min-width:768px){.section-title{font-size:32px;}}
  .section-kicker{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
    letter-spacing:1.6px;text-transform:uppercase;color:var(--accent-dark);margin-bottom:10px;
  }
  .section-kicker::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}

  .rec-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9D9D0;}
  .rec-media{overflow:hidden;aspect-ratio:16/10;background:var(--primary-light);}
  .rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
  .rec-card:hover .rec-media img{transform:scale(1.03);}
  .rec-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .rec-body h3{font-size:17.5px;color:var(--ink);transition:color .2s ease;}
  .rec-card:hover .rec-body h3{color:var(--primary);}
  .rec-body p{font-size:14.8px;color:var(--ink-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .rec-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#7A8C83;}

  .cta-band{
    background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 100%);
    border-radius:24px;padding:34px 26px;color:#fff;position:relative;overflow:hidden;
  }
  @media (min-width:768px){.cta-band{padding:46px 48px;}}
  .cta-band::after{
    content:"";position:absolute;right:-90px;top:-70px;width:280px;height:280px;
    border-radius:50%;border:1px solid rgba(255,255,255,.14);
  }
  .cta-band::before{
    content:"";position:absolute;right:-20px;bottom:-120px;width:220px;height:220px;
    border-radius:50%;border:1px solid rgba(240,100,45,.3);
  }
  .cta-band h2{font-size:24px;margin-bottom:12px;position:relative;}
  @media (min-width:768px){.cta-band h2{font-size:30px;}}
  .cta-band p{color:rgba(226,240,233,.86);position:relative;max-width:640px;}

  /* ---------- Footer ---------- */
  .site-footer{background:var(--primary-dark);color:#fff;margin-top:0;}
  .site-footer h4{font-size:15px;color:#fff;letter-spacing:.4px;margin:0 0 16px;position:relative;padding-bottom:10px;}
  .site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:2px;background:var(--accent);border-radius:2px;}
  .footer-link{display:block;color:rgba(220,236,227,.82);font-size:14.5px;padding:5px 0;transition:color .2s ease,transform .2s ease;}
  .footer-link:hover{color:var(--accent);transform:translateX(3px);}
  .footer-bottom{
    margin-top:46px;border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0 28px;font-size:13.5px;color:rgba(206,224,214,.72);
  }

/* roulang page: category1 */
:root{
  --brand:#0E3B2E;
  --brand-dark:#08281F;
  --brand-light:#E7F1EC;
  --accent:#F0642D;
  --accent-dark:#C94A1B;
  --accent-light:#FFF0E8;
  --bg:#F6F7F3;
  --card:#FFFFFF;
  --ink:#101A16;
  --ink-soft:#52635B;
  --border:#DCE5DF;
  --gold:#C79A3B;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(14,59,46,.08);
  --shadow-lg:0 14px 36px rgba(14,59,46,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans",Inter,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body h1,body h2,body h3,body h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:.2px;}
body p{margin:0;}
body a{color:inherit;text-decoration:none;}
body ul,body ol{margin:0;padding:0;list-style:none;}
body img{max-width:100%;display:block;}
body button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px;}

.container-x{width:100%;max-width:1280px;margin:0 auto;padding:0 16px;}
@media (min-width:768px){.container-x{padding:0 24px;}}
@media (min-width:1024px){.container-x{padding:0 32px;}}

.section{padding:48px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
@media (min-width:1024px){.section{padding:88px 0;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,243,.94);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.97);
  border-bottom-color:var(--border);
  box-shadow:0 8px 24px rgba(14,59,46,.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;
  box-shadow:0 6px 16px rgba(14,59,46,.24);flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;color:var(--brand);letter-spacing:.2px;}
.brand-text span{font-size:11px;color:var(--ink-soft);letter-spacing:1.4px;text-transform:uppercase;}

.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:10px 14px;border-radius:10px;font-size:15px;font-weight:500;
  color:var(--ink-soft);transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link.active{color:var(--brand);font-weight:600;background:var(--brand-light);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--accent);
}
.nav-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;transition:opacity .2s ease;flex:0 0 auto;}
.nav-link.active .nav-dot{opacity:1;}
.nav-link:hover .nav-dot{opacity:.65;}

.menu-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;
  color:var(--brand);display:grid;place-items:center;font-size:17px;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.menu-toggle:hover{border-color:var(--brand);background:var(--brand-light);}
.mobile-menu{display:none;border-top:1px solid var(--border);background:#fff;}
.mobile-menu.open{display:block;}
.mobile-link{
  display:block;padding:14px 2px;border-bottom:1px solid var(--border);
  font-size:16px;font-weight:500;color:var(--ink-soft);transition:color .2s ease;
}
.mobile-link:hover{color:var(--brand);}
.mobile-link.active{color:var(--brand);font-weight:700;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(240,100,45,.28);}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(240,100,45,.24);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:var(--brand-light);}
.btn-outline-light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent;}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;padding:0;height:auto;
  color:var(--brand);font-size:14.5px;font-weight:600;background:none;border:0;cursor:pointer;
  transition:color .2s ease;
}
.btn-ghost:hover{color:var(--accent);}

/* ============ 小 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:56px 0 52px;min-height:340px;display:flex;align-items:center;
  background:linear-gradient(115deg,rgba(8,40,31,.95) 0%,rgba(14,59,46,.86) 58%,rgba(14,59,46,.72) 100%),
             url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(255,255,255,.14);pointer-events:none;
}
.page-hero::before{
  content:"";position:absolute;left:-90px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  border:1px dashed rgba(240,100,45,.32);pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:820px;}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:rgba(220,236,227,.8);margin-bottom:20px;}
.breadcrumb a{transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb i{font-size:10px;opacity:.65;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  padding:6px 14px;border-radius:999px;color:#FFE4D6;
  background:rgba(240,100,45,.18);border:1px solid rgba(240,100,45,.4);margin-bottom:18px;
}
body h1.hero-title{
  color:#fff;font-size:clamp(28px,4.4vw,50px);line-height:1.3;letter-spacing:.4px;
}
.hero-sub{margin-top:16px;font-size:16.5px;line-height:1.85;color:rgba(228,240,233,.88);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:26px;font-size:13.5px;color:rgba(214,231,221,.78);}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--accent);}

/* ============ 布局 ============ */
.cat-layout{display:grid;gap:32px;}
@media (min-width:1024px){
  .cat-layout{grid-template-columns:288px minmax(0,1fr);gap:44px;}
  .side-col{position:sticky;top:96px;align-self:start;}
}
.side-stack{display:grid;gap:20px;}

.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.side-card h3{font-size:16px;margin-bottom:14px;color:var(--brand);}
.side-link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  font-size:14.5px;color:var(--ink-soft);transition:background .2s ease,color .2s ease;
}
.side-link i{font-size:12px;color:var(--accent);opacity:.85;}
.side-link:hover{background:var(--brand-light);color:var(--brand);}
.side-note{
  background:linear-gradient(150deg,var(--brand),var(--brand-dark));color:#fff;border:0;
}
.side-note h3{color:#fff;}
.side-note p{font-size:14px;line-height:1.85;color:rgba(222,238,229,.86);}
.side-note .btn{margin-top:16px;width:100%;}

/* ============ 正文板块 ============ */
.block{display:grid;gap:22px;}
.block-head{max-width:760px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  padding:6px 14px;border-radius:999px;background:var(--accent-light);color:var(--accent-dark);
  letter-spacing:.6px;margin-bottom:14px;
}
body h2.block-title{font-size:clamp(22px,3vw,32px);line-height:1.4;}
.block-title::before{
  content:"";display:inline-block;width:6px;height:22px;border-radius:3px;
  background:var(--accent);margin-right:12px;vertical-align:-3px;
}
.block-lead{color:var(--ink-soft);font-size:16px;line-height:1.9;margin-top:12px;}

/* 列表卡片 */
.update-list{display:grid;gap:20px;}
.update-item{
  display:grid;background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;
}
@media (min-width:768px){.update-item{grid-template-columns:264px minmax(0,1fr);}}
.update-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.update-thumb{overflow:hidden;background:var(--brand-light);}
.update-thumb img{width:100%;height:100%;min-height:186px;object-fit:cover;transition:transform .4s ease;}
.update-item:hover .update-thumb img{transform:scale(1.04);}
.update-body{padding:22px 24px;display:flex;flex-direction:column;gap:12px;}
.update-tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.update-desc{color:var(--ink-soft);font-size:15px;line-height:1.85;}
body h3.update-title{font-size:19px;line-height:1.55;}
.update-title a{transition:color .2s ease;}
.update-title a:hover{color:var(--brand);}
.update-foot{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.update-time{font-size:13px;color:var(--ink-soft);}

.tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12.5px;font-weight:600;white-space:nowrap;
}
.tag-brand{background:var(--brand-light);color:var(--brand);}
.tag-accent{background:var(--accent-light);color:var(--accent-dark);}
.tag-gold{background:#FBF4E3;color:#8A6A1E;}

/* 时间线 */
.timeline{position:relative;display:grid;gap:18px;padding-left:26px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--accent),rgba(14,59,46,.16));
}
.timeline-item{position:relative;}
.timeline-dot{
  position:absolute;left:-26px;top:24px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--accent);box-shadow:0 0 0 4px rgba(240,100,45,.12);
}
.timeline-card{
  background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px 22px;
  box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease;
}
.timeline-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.timeline-card h3{font-size:17.5px;margin-bottom:8px;}
.timeline-card p{color:var(--ink-soft);font-size:15px;line-height:1.85;}
.timeline-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;}

/* 数据条 */
.stat-band{
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-dark) 100%);
  border-radius:26px;padding:34px 28px;color:#fff;position:relative;overflow:hidden;
}
.stat-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  border:1px solid rgba(255,255,255,.12);
}
.stat-grid{position:relative;z-index:2;display:grid;gap:26px;grid-template-columns:repeat(2,minmax(0,1fr));}
@media (min-width:768px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat-item{padding-left:16px;border-left:1px solid rgba(255,255,255,.18);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{display:block;font-size:clamp(30px,4vw,50px);font-weight:700;line-height:1.1;color:#fff;letter-spacing:.5px;}
.stat-num em{font-style:normal;color:var(--accent);font-size:.6em;margin-left:2px;}
.stat-label{display:block;margin-top:8px;font-size:13px;color:rgba(214,231,221,.82);letter-spacing:.4px;}

/* FAQ */
.faq-wrap{display:grid;gap:30px;}
@media (min-width:1024px){.faq-wrap{grid-template-columns:320px minmax(0,1fr);gap:56px;}}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(240,100,45,.55);box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q i{color:var(--accent);font-size:14px;transition:transform .25s ease;flex:0 0 auto;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{padding:0 20px 20px;color:var(--ink-soft);font-size:15px;line-height:1.9;}

/* CTA */
.cta-block{
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-dark) 100%);
  border-radius:26px;padding:38px 30px;color:#fff;
  display:grid;gap:28px;position:relative;overflow:hidden;
}
@media (min-width:1024px){.cta-block{grid-template-columns:1.15fr .85fr;align-items:center;padding:46px 44px;}}
.cta-block h2{color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.45;}
.cta-block p{margin-top:14px;color:rgba(222,238,229,.86);font-size:15.5px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}
.cta-points{display:grid;gap:14px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:22px;}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:rgba(230,241,234,.9);line-height:1.8;}
.cta-points i{color:var(--accent);margin-top:4px;}

/* 页脚 */
.site-footer{background:var(--brand-dark);color:#fff;margin-top:76px;}
.site-footer h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 12px;}
.footer-link{display:block;padding:5px 0;font-size:14.5px;color:rgba(220,236,227,.82);transition:color .2s ease;}
.footer-link:hover{color:var(--accent);}
.footer-bottom{
  margin-top:36px;padding:20px 0 32px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(214,231,221,.7);
}

/* 动效 */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
    --brand:#0E3B2E;
    --brand-d:#08281F;
    --brand-l:#E7F1EC;
    --accent:#F0642D;
    --accent-d:#C94A1B;
    --accent-l:#FFF0E8;
    --bg:#F6F7F3;
    --card:#FFFFFF;
    --ink:#101A16;
    --ink-2:#52635B;
    --line:#DCE5DF;
    --copper:#C79A3B;
    --shadow:0 8px 24px rgba(14,59,46,.08);
    --shadow-h:0 14px 36px rgba(14,59,46,.14);
    --r-card:18px;
    --r-btn:12px;
  }

  *{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans",Inter,"Segoe UI",system-ui,-apple-system,sans-serif;
    font-size:16.5px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease;}
  img{max-width:100%;display:block;}
  button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
  h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:.2px;}
  p{margin:0 0 1em;}
  ul{margin:0;padding:0;list-style:none;}
  ::selection{background:var(--accent-l);color:var(--accent-d);}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px;}
  @media (min-width:768px){.container-x{padding-left:24px;padding-right:24px;}}
  @media (min-width:1024px){.container-x{padding-left:32px;padding-right:32px;}}

  .section{padding:56px 0;}
  @media (min-width:768px){.section{padding:72px 0;}}
  @media (min-width:1024px){.section{padding:88px 0;}}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    background:var(--brand-l);color:var(--brand);
    font-size:13px;font-weight:600;letter-spacing:.6px;
  }
  .eyebrow.on-dark{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);color:#E7F1EC;font-weight:500;}
  .eyebrow-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}

  .h2{font-size:24px;color:var(--brand);font-weight:700;}
  @media (min-width:768px){.h2{font-size:32px;}}
  .h2-line{width:44px;height:3px;border-radius:3px;background:var(--accent);margin-top:14px;}
  .lead{color:var(--ink-2);font-size:15.5px;max-width:760px;}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,247,243,.88);
    backdrop-filter:blur(10px);
    border-bottom:1px solid transparent;
    transition:box-shadow .25s ease,border-color .25s ease,background-color .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.95);
    border-bottom-color:var(--line);
    box-shadow:0 8px 24px rgba(14,59,46,.08);
  }
  .brand{display:inline-flex;align-items:center;gap:10px;}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;flex:0 0 40px;
    display:grid;place-items:center;
    background:linear-gradient(140deg,var(--brand),var(--brand-d));
    color:#fff;font-weight:700;font-size:19px;
    box-shadow:0 6px 16px rgba(14,59,46,.24);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.18;}
  .brand-text b{font-size:16.5px;color:var(--brand);letter-spacing:.2px;}
  .brand-text span{font-size:10.5px;color:var(--ink-2);letter-spacing:1.6px;text-transform:uppercase;}

  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:7px;
    padding:10px 14px;border-radius:10px;
    font-size:15px;font-weight:500;color:var(--ink-2);
    transition:color .2s ease,background-color .2s ease;
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-l);}
  .nav-link.active{color:var(--brand);font-weight:700;background:var(--brand-l);}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--accent);
  }
  .nav-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;transition:opacity .2s ease;}
  .nav-link.active .nav-dot{opacity:1;}

  .menu-toggle{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:#fff;display:grid;place-items:center;gap:4px;
  }
  .menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand);transition:.25s ease;}
  .menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
  .menu-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .mobile-panel{
    border-top:1px solid var(--line);
    background:#fff;
    box-shadow:0 18px 34px rgba(14,59,46,.10);
  }
  .mobile-panel a.m-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 4px;border-bottom:1px solid var(--line);
    font-size:16px;color:var(--ink);
  }
  .mobile-panel a.m-link.active{color:var(--brand);font-weight:700;}
  .mobile-panel a.m-link .m-tag{
    font-size:12px;color:var(--accent-d);background:var(--accent-l);
    border-radius:999px;padding:2px 10px;
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;
    transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px rgba(240,100,45,.28);}
  .btn-primary:hover{background:var(--accent-d);color:#fff;transform:translateY(-1px);box-shadow:0 14px 30px rgba(240,100,45,.34);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
  .btn-ghost:hover{background:var(--brand-l);color:var(--brand);}
  .btn-light{background:#fff;border-color:rgba(255,255,255,.6);color:var(--brand);}
  .btn-light:hover{background:var(--brand-l);color:var(--brand);transform:translateY(-1px);}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
  .btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff;}
  .btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;}
  .btn-sm{height:40px;padding:0 16px;font-size:14px;}

  /* ---------- hero ---------- */
  .page-hero{position:relative;overflow:hidden;background:var(--brand-d);}
  .page-hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:.42;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(118deg,rgba(8,40,31,.95),rgba(14,59,46,.84) 52%,rgba(8,40,31,.72));
  }
  .page-hero-lines{
    position:absolute;inset:0;opacity:.16;pointer-events:none;
    background-image:
      radial-gradient(circle at 88% 18%, rgba(240,100,45,.5) 0, transparent 42%),
      repeating-linear-gradient(90deg, rgba(255,255,255,.35) 0 1px, transparent 1px 92px);
  }
  .page-hero-inner{position:relative;z-index:1;padding:56px 0 52px;}
  @media (min-width:1024px){.page-hero-inner{padding:76px 0 68px;}}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(222,238,229,.78);margin-bottom:18px;}
  .crumb a:hover{color:var(--accent);}
  .crumb .sep{opacity:.5;}
  .hero-h1{
    color:#fff;font-size:28px;font-weight:700;letter-spacing:.5px;
    margin:16px 0 14px;max-width:900px;
  }
  @media (min-width:768px){.hero-h1{font-size:40px;}}
  @media (min-width:1024px){.hero-h1{font-size:46px;}}
  .hero-sub{color:rgba(226,240,232,.9);font-size:16px;max-width:660px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .hero-meta{
    display:flex;flex-wrap:wrap;gap:20px 32px;margin-top:30px;
    padding-top:22px;border-top:1px solid rgba(255,255,255,.18);
  }
  .hero-meta div{color:rgba(226,240,232,.86);font-size:13.5px;}
  .hero-meta b{display:block;color:#fff;font-size:22px;font-weight:700;line-height:1.3;}

  /* ---------- flow ---------- */
  .flow{display:grid;gap:18px;grid-template-columns:1fr;margin-top:32px;}
  @media (min-width:768px){.flow{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.flow{grid-template-columns:repeat(4,1fr);}}
  .flow-item{
    position:relative;background:var(--card);border:1px solid var(--line);
    border-radius:var(--r-card);padding:26px 22px 24px;
    box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .flow-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:#CFDDD5;}
  .flow-num{font-size:34px;font-weight:700;color:var(--accent);line-height:1;letter-spacing:-1px;}
  .flow-item h3{font-size:18px;color:var(--brand);margin:14px 0 8px;}
  .flow-item p{font-size:14.5px;color:var(--ink-2);margin:0;}
  .flow-rule{height:1px;background:var(--line);margin:16px 0 0;}

  /* ---------- filter + topic cards ---------- */
  .filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .filter-btn{
    height:38px;padding:0 16px;border-radius:999px;
    border:1px solid var(--line);background:#fff;color:var(--ink-2);
    font-size:14px;font-weight:500;transition:.2s ease;
  }
  .filter-btn:hover{border-color:var(--brand);color:var(--brand);}
  .filter-btn.is-active{background:var(--brand);border-color:var(--brand);color:#fff;}
  .filter-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

  .topic-grid{display:grid;gap:22px;grid-template-columns:1fr;margin-top:26px;}
  @media (min-width:768px){.topic-grid{grid-template-columns:repeat(2,1fr);}}
  .topic-card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--card);border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;
  }
  .topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);}
  .topic-media{position:relative;aspect-ratio:16/8.4;overflow:hidden;background:var(--brand-l);}
  .topic-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .topic-card:hover .topic-media img{transform:scale(1.04);}
  .topic-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
  .topic-body h3{font-size:19px;color:var(--brand);margin-bottom:10px;}
  .topic-body p{font-size:14.8px;color:var(--ink-2);margin:0 0 18px;}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:12.5px;font-weight:600;letter-spacing:.2px;
  }
  .tag-brand{background:var(--brand-l);color:var(--brand);}
  .tag-accent{background:var(--accent-l);color:var(--accent-d);}
  .tag-copper{background:#FBF3E2;color:#8B6A1F;}
  .topic-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:16px;border-top:1px solid var(--line);}
  .text-link{color:var(--brand);font-size:14.5px;font-weight:600;border-bottom:1px solid transparent;}
  .text-link:hover{color:var(--accent-d);border-bottom-color:var(--accent);}
  .topic-date{font-size:13px;color:var(--ink-2);}

  /* ---------- safety dark block ---------- */
  .safety{
    position:relative;overflow:hidden;
    background:linear-gradient(135deg,var(--brand-d),var(--brand) 62%,#0C4433);
    border-radius:24px;color:#fff;padding:38px 24px;
  }
  @media (min-width:1024px){.safety{padding:56px 52px;}}
  .safety-grid{display:grid;gap:18px;margin-top:30px;grid-template-columns:1fr;}
  @media (min-width:768px){.safety-grid{grid-template-columns:repeat(2,1fr);}}
  .safety-item{
    border:1px solid rgba(220,236,227,.22);border-radius:16px;padding:20px 20px 22px;
    background:rgba(255,255,255,.05);
    transition:background-color .2s ease,border-color .2s ease;
  }
  .safety-item:hover{background:rgba(255,255,255,.09);border-color:rgba(240,100,45,.6);}
  .safety-item h3{font-size:17px;color:#fff;margin-bottom:8px;}
  .safety-item p{font-size:14.5px;color:rgba(219,236,226,.85);margin:0;}
  .safety-stat{display:flex;flex-wrap:wrap;gap:26px 46px;margin-top:30px;padding-top:26px;border-top:1px solid rgba(220,236,227,.2);}
  .safety-stat b{display:block;font-size:30px;font-weight:700;color:#fff;line-height:1.25;}
  .safety-stat span{font-size:13px;color:rgba(219,236,226,.78);}

  /* ---------- faq ---------- */
  .faq-wrap{margin-top:28px;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);background:transparent;transition:background-color .2s ease;}
  .faq-item.is-open{background:#FBFCFA;}
  .faq-q{
    width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
    padding:20px 4px 20px 14px;text-align:left;position:relative;
  }
  .faq-item.is-open .faq-q::before{
    content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;background:var(--accent);
  }
  .faq-q h3{font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;}
  .faq-item.is-open .faq-q h3{color:var(--brand);}
  .faq-icon{
    flex:0 0 26px;width:26px;height:26px;border-radius:50%;
    border:1px solid var(--line);display:grid;place-items:center;
    color:var(--brand);font-size:16px;line-height:1;transition:.25s ease;margin-top:2px;
  }
  .faq-item.is-open .faq-icon{background:var(--accent);border-color:var(--accent);color:#fff;transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
  .faq-a-inner{padding:0 44px 22px 14px;color:var(--ink-2);font-size:14.8px;line-height:1.9;}
  .faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;border-radius:8px;}

  /* ---------- cta ---------- */
  .cta-card{
    background:linear-gradient(120deg,var(--brand-l),#F3F8F5 70%);
    border:1px solid var(--line);border-radius:24px;padding:32px 24px;
  }
  @media (min-width:1024px){.cta-card{padding:44px 48px;}}
  .cta-list li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:14.8px;color:var(--ink-2);padding:9px 0;border-bottom:1px dashed var(--line);
  }
  .cta-list li:last-child{border-bottom:none;}
  .cta-check{
    flex:0 0 20px;width:20px;height:20px;border-radius:50%;
    background:var(--brand);color:#fff;display:grid;place-items:center;
    font-size:12px;margin-top:4px;
  }

  /* ---------- footer ---------- */
  .site-footer{background:var(--brand-d);color:#fff;margin-top:64px;}
  .site-footer h4{font-size:15px;color:#fff;margin-bottom:14px;letter-spacing:.4px;}
  .site-footer .brand-text b{color:#fff;}
  .footer-link{
    display:block;color:rgba(220,236,227,.82);font-size:14.5px;padding:5px 0;
  }
  .footer-link:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:36px;padding:20px 0 26px;border-top:1px solid rgba(220,236,227,.16);
    font-size:13px;color:rgba(203,224,212,.72);
  }
  .site-footer a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

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