/* roulang page: index */
:root{
    --c-brand-900:#0B2A5B;
    --c-brand-700:#14488F;
    --c-brand-600:#1B5FBF;
    --c-brand-500:#2A79D8;
    --c-brand-50:#EEF4FD;
    --c-accent:#F2811D;
    --c-accent-soft:#FFF1E4;
    --c-mint:#12A594;
    --c-mint-soft:#E6F6F3;
    --c-ink:#0F1B2B;
    --c-ink-2:#3C4A60;
    --c-ink-3:#6B7A90;
    --c-bg:#F7F9FC;
    --c-surface:#FFFFFF;
    --c-line:#E3E9F2;
    --r-md:16px;
    --r-lg:24px;
    --sh-sm:0 1px 2px rgba(15,27,43,.06);
    --sh-md:0 6px 20px -8px rgba(15,27,43,.12);
    --sh-lg:0 18px 40px -20px rgba(15,27,43,.22);
    --container:1200px;
  }
  *,*::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","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.75;
    font-weight:400;
    color:var(--c-ink-2);
    background:var(--c-surface);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,h5,h6,p{margin:0;}
  h1,h2,h3,h4{color:var(--c-ink);font-weight:600;}
  input,textarea,select{font-family:inherit;font-size:15px;color:var(--c-ink);}
  :focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;}
  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 32px;
  }
  /* ===== 顶部信息条 ===== */
  .topbar{
    background:var(--c-brand-50);
    border-bottom:1px solid var(--c-line);
    font-size:13px;
    color:var(--c-ink-3);
  }
  .topbar .container{
    height:38px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
  }
  .topbar-links{display:flex;align-items:center;gap:20px;}
  .topbar-links a{color:var(--c-brand-700);transition:color .18s ease-out;}
  .topbar-links a:hover{color:var(--c-brand-900);}
  /* ===== 导航 ===== */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.92);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--c-line);
    transition:box-shadow .18s ease-out;
  }
  .site-header.is-stuck{box-shadow:var(--sh-sm);}
  .nav{
    height:72px;
    display:flex;
    align-items:center;
    gap:28px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;
    background:linear-gradient(135deg,var(--c-brand-700),var(--c-brand-500));
    display:flex;align-items:center;justify-content:center;
    box-shadow:var(--sh-sm);
  }
  .brand-mark svg{width:20px;height:20px;stroke:#fff;}
  .brand-text{display:flex;align-items:baseline;gap:6px;white-space:nowrap;}
  .brand-name{font-size:18px;font-weight:700;color:var(--c-brand-900);letter-spacing:-.01em;}
  .brand-sub{font-size:13px;font-weight:500;color:var(--c-ink-3);}
  .nav-links{display:flex;align-items:center;gap:30px;margin-left:8px;}
  .nav-links a{
    position:relative;
    font-size:15px;
    color:var(--c-ink-2);
    padding:6px 0;
    transition:color .18s ease-out;
  }
  .nav-links a::after{
    content:"";
    position:absolute;left:0;right:0;bottom:-2px;
    height:3px;border-radius:3px;
    background:var(--c-accent);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .18s ease-out;
  }
  .nav-links a:hover{color:var(--c-brand-700);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--c-brand-900);font-weight:600;}
  .nav-links a.active::after{transform:scaleX(1);}
  .nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .nav-search{
    display:flex;align-items:center;gap:8px;
    width:220px;height:40px;
    padding:0 14px;
    background:var(--c-bg);
    border:1px solid transparent;
    border-radius:999px;
    transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
  }
  .nav-search svg{width:16px;height:16px;stroke:var(--c-ink-3);flex:0 0 auto;}
  .nav-search input{
    border:0;background:transparent;outline:none;width:100%;
    font-size:14px;color:var(--c-ink);
  }
  .nav-search input::placeholder{color:var(--c-ink-3);}
  .nav-search:focus-within{
    background:#fff;
    border-color:var(--c-brand-500);
    box-shadow:0 0 0 4px rgba(42,121,216,.14);
  }
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:600;line-height:1;
    border:1px solid transparent;
    cursor:pointer;
    transition:transform .18s ease-out,background .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out,color .18s ease-out;
  }
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px -10px rgba(242,129,29,.9);}
  .btn-primary:hover{background:#DE7015;transform:translateY(-1px);box-shadow:0 12px 22px -12px rgba(242,129,29,.95);}
  .btn-primary:active{transform:translateY(0);background:#C96210;}
  .btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand-700);}
  .btn-ghost:hover{border-color:var(--c-brand-500);color:var(--c-brand-900);transform:translateY(-1px);box-shadow:var(--sh-sm);}
  .btn-brand{background:var(--c-brand-700);color:#fff;}
  .btn-brand:hover{background:var(--c-brand-900);transform:translateY(-1px);box-shadow:var(--sh-md);}
  .btn-sm{height:40px;padding:0 20px;font-size:14px;}
  .btn-block{width:100%;}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    font-size:15px;font-weight:600;color:var(--c-brand-700);
    transition:color .18s ease-out;
  }
  .link-arrow svg{width:16px;height:16px;stroke:currentColor;transition:transform .18s ease-out;}
  .link-arrow:hover{color:var(--c-brand-900);}
  .link-arrow:hover svg{transform:translateX(3px);}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--c-line);background:#fff;
    align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-toggle svg{width:20px;height:20px;stroke:var(--c-brand-700);}
  /* ===== 移动端抽屉 ===== */
  .drawer{
    position:fixed;inset:0;z-index:120;background:#fff;
    display:none;flex-direction:column;
    padding:20px 20px 28px;
    overflow-y:auto;
  }
  .drawer.open{display:flex;}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
  .drawer-close{
    width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);
    background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;
  }
  .drawer-close svg{width:20px;height:20px;stroke:var(--c-brand-700);}
  .drawer-nav{display:flex;flex-direction:column;margin-bottom:auto;}
  .drawer-nav a{
    font-size:16px;line-height:52px;color:var(--c-ink);
    border-bottom:1px solid var(--c-line);
  }
  .drawer-nav a.active{color:var(--c-brand-700);font-weight:600;}
  .drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px;}
  /* ===== Hero ===== */
  .hero{
    position:relative;
    background:linear-gradient(135deg,var(--c-bg) 0%,var(--c-brand-50) 100%);
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute;inset:0;
    background-image:repeating-linear-gradient(45deg,rgba(20,72,143,.05) 0 1px,transparent 1px 26px);
    opacity:.35;
    pointer-events:none;
  }
  .hero-inner{
    position:relative;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
    padding:72px 0 80px;
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--c-brand-50);
    border:1px solid rgba(20,72,143,.14);
    color:var(--c-brand-700);
    font-size:12px;font-weight:500;letter-spacing:.08em;
    padding:5px 12px;border-radius:999px;
    margin-bottom:22px;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
  .hero h1{
    font-size:clamp(30px,4.2vw,52px);
    line-height:1.18;
    letter-spacing:-.01em;
    font-weight:700;
    color:var(--c-ink);
    margin-bottom:20px;
  }
  .hero h1 .hl{color:var(--c-brand-700);}
  .hero-sub{
    font-size:16px;line-height:1.8;color:var(--c-ink-2);
    max-width:34em;margin-bottom:30px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
  .hero-trust{display:flex;flex-wrap:wrap;gap:24px;}
  .hero-trust li{
    display:flex;align-items:center;gap:7px;
    font-size:13px;color:var(--c-ink-3);
  }
  .hero-trust svg{width:16px;height:16px;stroke:var(--c-mint);flex:0 0 auto;}
  .hero-visual{position:relative;}
  .hero-visual::before{
    content:"";
    position:absolute;inset:0;
    transform:translate(14px,14px);
    background:var(--c-brand-50);
    border-radius:22px;
    border:1px solid rgba(20,72,143,.10);
  }
  .hero-visual img{
    position:relative;
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
    border-radius:20px;
    box-shadow:var(--sh-md);
    background:var(--c-brand-50);
  }
  .hero-badge{
    position:absolute;
    left:-14px;bottom:24px;
    background:#fff;
    border:1px solid var(--c-line);
    border-radius:14px;
    padding:12px 16px;
    box-shadow:var(--sh-md);
    display:flex;align-items:center;gap:10px;
  }
  .hero-badge .ico{
    width:36px;height:36px;border-radius:10px;
    background:var(--c-mint-soft);
    display:flex;align-items:center;justify-content:center;
  }
  .hero-badge .ico svg{width:18px;height:18px;stroke:var(--c-mint);}
  .hero-badge strong{display:block;font-size:14px;color:var(--c-ink);line-height:1.4;}
  .hero-badge span{font-size:12px;color:var(--c-ink-3);line-height:1.4;}
  /* ===== 板块通用 ===== */
  .section{padding:96px 0;}
  .section-tight{padding:72px 0;}
  .section-bg{background:var(--c-bg);}
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;
    gap:32px;margin-bottom:44px;
  }
  .section-head h2{
    font-size:clamp(24px,2.6vw,34px);
    line-height:1.3;font-weight:600;
    letter-spacing:-.01em;
    margin-bottom:12px;
  }
  .section-head p{font-size:15px;color:var(--c-ink-3);max-width:44em;line-height:1.8;}
  .label{
    display:inline-block;
    font-size:12px;font-weight:500;letter-spacing:.08em;
    color:var(--c-brand-700);
    background:var(--c-brand-50);
    padding:4px 10px;border-radius:999px;
    margin-bottom:14px;
  }
  /* ===== 服务卡区 ===== */
  .feature-grid{
    display:grid;
    grid-template-columns:5fr 7fr;
    gap:24px;
    align-items:stretch;
  }
  .card{
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-md);
    box-shadow:var(--sh-md);
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .card:hover{
    transform:translateY(-3px);
    box-shadow:var(--sh-lg);
    border-color:rgba(42,121,216,.3);
  }
  .feature-main{
    display:flex;flex-direction:column;
    overflow:hidden;
    padding:0;
  }
  .feature-main img{
    width:100%;aspect-ratio:16/9;object-fit:cover;
    background:var(--c-brand-50);
  }
  .feature-main-body{padding:26px 28px 28px;}
  .feature-main h3{font-size:22px;line-height:1.4;margin-bottom:10px;}
  .feature-main p{font-size:14px;line-height:1.8;color:var(--c-ink-3);margin-bottom:18px;}
  .sub-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:24px;
  }
  .mini-card{padding:24px 24px 26px;display:flex;flex-direction:column;}
  .mini-ico{
    width:48px;height:48px;border-radius:14px;
    background:var(--c-brand-50);
    display:flex;align-items:center;justify-content:center;
    margin-bottom:16px;
  }
  .mini-ico.mint{background:var(--c-mint-soft);}
  .mini-ico.accent{background:var(--c-accent-soft);}
  .mini-ico svg{width:24px;height:24px;stroke:var(--c-brand-700);}
  .mini-ico.mint svg{stroke:var(--c-mint);}
  .mini-ico.accent svg{stroke:var(--c-accent);}
  .mini-card h3{font-size:18px;line-height:1.45;margin-bottom:8px;}
  .mini-card p{font-size:14px;line-height:1.8;color:var(--c-ink-3);}
  /* ===== 数据条 ===== */
  .stats{
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-lg);
    box-shadow:var(--sh-sm);
    display:grid;
    grid-template-columns:repeat(4,1fr);
    padding:12px 0;
  }
  .stat{
    padding:26px 28px;
    text-align:center;
    border-left:1px solid var(--c-line);
  }
  .stat:first-child{border-left:0;}
  .stat strong{
    display:block;
    font-size:clamp(30px,3.4vw,42px);
    line-height:1.15;
    font-weight:700;
    color:var(--c-brand-700);
    letter-spacing:-.02em;
    margin-bottom:8px;
  }
  .stat span{font-size:14px;color:var(--c-ink-3);line-height:1.6;}
  /* ===== 图文交错 ===== */
  .story{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
  }
  .story + .story{margin-top:64px;}
  .story.reverse .story-media{order:2;}
  .story-media img{
    width:100%;aspect-ratio:4/3;object-fit:cover;
    border-radius:var(--r-md);
    box-shadow:var(--sh-md);
    background:var(--c-brand-50);
  }
  .story h3{font-size:24px;line-height:1.4;margin-bottom:14px;}
  .story p{font-size:15px;line-height:1.85;color:var(--c-ink-2);margin-bottom:20px;}
  .story-list{display:flex;flex-direction:column;gap:10px;margin-bottom:22px;}
  .story-list li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:14px;color:var(--c-ink-3);line-height:1.7;
  }
  .story-list svg{width:16px;height:16px;stroke:var(--c-mint);flex:0 0 auto;margin-top:4px;}
  /* ===== 流程 ===== */
  .steps{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:28px;
    position:relative;
  }
  .step{position:relative;}
  .step-num{
    width:44px;height:44px;border-radius:50%;
    background:var(--c-brand-700);color:#fff;
    font-size:16px;font-weight:700;
    display:flex;align-items:center;justify-content:center;
    margin-bottom:22px;
    position:relative;z-index:2;
    box-shadow:0 8px 18px -12px rgba(20,72,143,.9);
  }
  .step::after{
    content:"";
    position:absolute;left:56px;right:-28px;top:22px;
    border-top:1px dashed var(--c-line);
    z-index:1;
  }
  .step:last-child::after{display:none;}
  .step-card{
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-md);
    padding:24px;
    box-shadow:var(--sh-sm);
    transition:transform .18s ease-out,box-shadow .18s ease-out;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);}
  .step-card h3{font-size:18px;margin-bottom:8px;line-height:1.45;}
  .step-card p{font-size:14px;line-height:1.8;color:var(--c-ink-3);}
  /* ===== 资讯列表 ===== */
  .news-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .news-card{
    display:flex;flex-direction:column;
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-md);
    overflow:hidden;
    box-shadow:var(--sh-sm);
    min-height:340px;
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .news-card:hover{
    transform:translateY(-3px);
    box-shadow:var(--sh-lg);
    border-color:rgba(42,121,216,.28);
  }
  .news-thumb{position:relative;}
  .news-thumb img{
    width:100%;aspect-ratio:16/9;object-fit:cover;
    background:var(--c-brand-50);
    border-radius:12px 12px 0 0;
  }
  .news-badge{
    position:absolute;left:12px;bottom:12px;
    background:var(--c-brand-700);color:#fff;
    font-size:12px;font-weight:500;
    padding:4px 10px;border-radius:999px;
    max-width:80%;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  .news-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
  .news-body h3{
    font-size:17px;line-height:1.5;font-weight:600;
    margin-bottom:10px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
    overflow:hidden;
    transition:color .18s ease-out;
  }
  .news-card:hover .news-body h3{color:var(--c-brand-700);}
  .news-body p{
    font-size:14px;line-height:1.75;color:var(--c-ink-3);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
    overflow:hidden;
    margin-bottom:16px;
  }
  .news-foot{
    margin-top:auto;
    display:flex;align-items:center;justify-content:space-between;
    gap:8px;
    padding-top:14px;
    border-top:1px solid var(--c-line);
  }
  .news-foot time{font-size:13px;color:var(--c-ink-3);white-space:nowrap;}
  .news-foot svg{width:16px;height:16px;stroke:var(--c-brand-500);flex:0 0 auto;}
  .empty-state{
    grid-column:1 / -1;
    border:1.5px dashed var(--c-line);
    border-radius:var(--r-md);
    min-height:200px;
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:14px;
    padding:36px 24px;
    text-align:center;
    background:var(--c-bg);
  }
  .empty-state svg{width:40px;height:40px;stroke:var(--c-brand-500);}
  .empty-state p{font-size:14px;color:var(--c-ink-3);}
  .news-more{display:flex;justify-content:center;margin-top:40px;}
  .news-more .btn{min-width:160px;}
  /* ===== FAQ ===== */
  .faq-layout{
    display:grid;
    grid-template-columns:4fr 8fr;
    gap:56px;
    align-items:start;
  }
  .faq-intro h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;margin-bottom:14px;}
  .faq-intro p{font-size:15px;line-height:1.8;color:var(--c-ink-3);margin-bottom:24px;}
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:12px;
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .faq-item.open{
    border-color:rgba(42,121,216,.4);
    box-shadow:var(--sh-sm);
  }
  .faq-q{
    width:100%;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;
    background:transparent;border:0;cursor:pointer;
    text-align:left;
    font-size:16px;font-weight:600;color:var(--c-ink);
    line-height:1.6;
  }
  .faq-q svg{
    width:20px;height:20px;stroke:var(--c-brand-500);flex:0 0 auto;
    transition:transform .18s ease-out;
  }
  .faq-item.open .faq-q svg{transform:rotate(45deg);}
  .faq-a{
    display:none;
    padding:0 20px 22px;
    font-size:15px;line-height:1.8;color:var(--c-ink-2);
  }
  .faq-item.open .faq-a{display:block;}
  /* ===== CTA ===== */
  .cta-wrap{
    background:var(--c-brand-900);
    border-radius:var(--r-lg);
    padding:56px 56px;
    display:grid;
    grid-template-columns:6fr 6fr;
    gap:48px;
    align-items:center;
    position:relative;
    overflow:hidden;
  }
  .cta-wrap::after{
    content:"";
    position:absolute;right:-80px;top:-80px;
    width:280px;height:280px;border-radius:50%;
    background:rgba(42,121,216,.28);
    filter:blur(10px);
    pointer-events:none;
  }
  .cta-left{position:relative;z-index:2;}
  .cta-left h2{color:#fff;font-size:clamp(24px,2.6vw,32px);line-height:1.32;margin-bottom:14px;}
  .cta-left > p{color:rgba(255,255,255,.78);font-size:15px;line-height:1.8;margin-bottom:26px;}
  .cta-contact{display:flex;flex-direction:column;gap:12px;}
  .cta-contact li{
    display:flex;align-items:flex-start;gap:10px;
    font-size:15px;color:rgba(255,255,255,.85);line-height:1.7;
  }
  .cta-contact svg{width:20px;height:20px;stroke:var(--c-accent);flex:0 0 auto;margin-top:2px;}
  .form-card{
    position:relative;z-index:2;
    background:#fff;
    border-radius:var(--r-md);
    padding:28px;
    box-shadow:var(--sh-lg);
  }
  .form-card h3{font-size:18px;margin-bottom:6px;}
  .form-card .form-sub{font-size:13px;color:var(--c-ink-3);margin-bottom:20px;line-height:1.7;}
  .field{margin-bottom:16px;}
  .field label{
    display:block;
    font-size:14px;color:var(--c-ink-2);
    margin-bottom:6px;
  }
  .field input,.field textarea{
    width:100%;
    height:46px;
    border:1px solid var(--c-line);
    border-radius:10px;
    padding:0 14px;
    background:#fff;
    outline:none;
    transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field input:focus,.field textarea:focus{
    border-color:var(--c-brand-500);
    box-shadow:0 0 0 4px rgba(42,121,216,.12);
  }
  .form-note{font-size:12px;color:var(--c-ink-3);margin-top:12px;line-height:1.7;}
  .form-msg{
    display:none;
    margin-top:12px;
    font-size:13px;
    color:var(--c-mint);
    background:var(--c-mint-soft);
    border-radius:10px;
    padding:10px 14px;
  }
  .form-msg.show{display:block;}
  /* ===== 页脚 ===== */
  .site-footer{
    background:var(--c-brand-900);
    color:rgba(255,255,255,.72);
    padding:64px 0 0;
    margin-top:0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:4fr 2.6fr 2.6fr 2.8fr;
    gap:40px;
    padding-bottom:48px;
  }
  .footer-brand .brand-name{color:#fff;}
  .footer-brand .brand-sub{color:rgba(255,255,255,.6);}
  .footer-brand p{
    font-size:14px;line-height:1.9;
    color:rgba(255,255,255,.68);
    margin-top:16px;
    max-width:26em;
  }
  .socials{display:flex;gap:10px;margin-top:20px;}
  .socials a{
    width:36px;height:36px;border-radius:10px;
    border:1px solid rgba(255,255,255,.16);
    display:flex;align-items:center;justify-content:center;
    transition:background .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
  }
  .socials svg{width:17px;height:17px;stroke:rgba(255,255,255,.8);}
  .socials a:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);transform:translateY(-1px);}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-col ul{display:flex;flex-direction:column;}
  .footer-col li{line-height:2.2;}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease-out;}
  .footer-col a:hover{color:#fff;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0 24px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:13px;color:rgba(255,255,255,.56);
    flex-wrap:wrap;
  }
  /* ===== 响应式 ===== */
  @media (max-width:1100px){
    .nav-links{gap:20px;}
    .nav-search{width:180px;}
  }
  @media (max-width:1024px){
    .container{padding:0 24px;}
    .nav-links{display:none;}
    .nav-search{display:none;}
    .nav-toggle{display:flex;}
    .nav-actions{gap:10px;}
    .nav-actions .btn-ghost{display:none;}
    .hero-inner{
      grid-template-columns:1fr;
      gap:36px;
      padding:48px 0 56px;
    }
    .hero-visual{order:2;}
    .hero-badge{left:12px;bottom:-16px;}
    .section{padding:72px 0;}
    .section-tight{padding:56px 0;}
    .feature-grid{grid-template-columns:1fr;}
    .story{grid-template-columns:1fr;gap:32px;}
    .story.reverse .story-media{order:0;}
    .story + .story{margin-top:48px;}
    .steps{grid-template-columns:1fr;gap:20px;}
    .step::after{display:none;}
    .step-num{margin-bottom:14px;}
    .news-grid{grid-template-columns:repeat(2,1fr);}
    .faq-layout{grid-template-columns:1fr;gap:32px;}
    .cta-wrap{grid-template-columns:1fr;padding:40px 32px;gap:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .stats{grid-template-columns:1fr 1fr;}
    .stat:nth-child(3){border-left:0;}
    .stat:nth-child(n+3){border-top:1px solid var(--c-line);}
  }
  @media (max-width:768px){
    .topbar .container{height:auto;padding-top:8px;padding-bottom:8px;flex-wrap:wrap;}
    .topbar-links{gap:16px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
    .sub-grid{grid-template-columns:1fr;}
    .news-grid{grid-template-columns:1fr;}
    .news-card{min-height:auto;}
    .hero h1{font-size:30px;}
    .cta-wrap{padding:32px 22px;}
    .form-card{padding:22px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  }
  @media (max-width:520px){
    .container{padding:0 20px;}
    .hero-inner{padding:36px 0 48px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .hero-trust{gap:14px;flex-direction:column;align-items:flex-start;}
    .stats{grid-template-columns:1fr;padding:4px 0;}
    .stat{border-left:0;border-top:1px solid var(--c-line);padding:20px;}
    .stat:first-child{border-top:0;}
    .section{padding:48px 0;}
    .section-tight{padding:40px 0;}
    .faq-q{font-size:15px;padding:16px;}
    .faq-a{padding:0 16px 18px;font-size:14px;}
    .news-body{padding:16px;}
    .brand-sub{display:none;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *{transition:none !important;animation:none !important;}
  }

/* roulang page: article */
:root{
  --c-brand-900:#0B2A5B;
  --c-brand-800:#0E3A76;
  --c-brand-700:#14488F;
  --c-brand-600:#1B5FBF;
  --c-brand-500:#2A79D8;
  --c-brand-50:#EEF4FD;
  --c-accent:#F2811D;
  --c-accent-dark:#DC7013;
  --c-accent-soft:#FFF1E4;
  --c-mint:#12A594;
  --c-mint-soft:#E6F6F3;
  --c-ink:#0F1B2B;
  --c-ink-2:#3C4A60;
  --c-ink-3:#6B7A90;
  --c-bg:#F7F9FC;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --sh-sm:0 1px 2px rgba(15,27,43,.06);
  --sh-md:0 6px 20px -8px rgba(15,27,43,.12);
  --sh-lg:0 18px 40px -20px rgba(15,27,43,.22);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-ink-2);background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.4em;}
:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ============ header / nav ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--c-line);}
.nav{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:32px;height:32px;border-radius:10px;background:var(--c-brand-50);display:grid;place-items:center;color:var(--c-brand-700);flex:none;}
.brand-mark svg{width:20px;height:20px;stroke:currentColor;fill:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:700;color:var(--c-brand-900);letter-spacing:.01em;}
.brand-sub{font-size:12px;font-weight:500;color:var(--c-ink-3);letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-links a{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;transition:color .18s ease-out;}
.nav-links a:hover{color:var(--c-brand-700);}
.nav-links a.active{color:var(--c-brand-900);font-weight:600;}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:3px;border-radius:3px;background:var(--c-accent);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search svg{position:absolute;left:13px;width:18px;height:18px;stroke:var(--c-ink-3);fill:none;stroke-width:1.8;stroke-linecap:round;}
.nav-search input{height:40px;width:228px;border-radius:999px;border:1px solid var(--c-line);background:var(--c-bg);padding:0 16px 0 40px;font-size:14px;color:var(--c-ink);transition:all .18s ease-out;}
.nav-search input::placeholder{color:var(--c-ink-3);}
.nav-search input:focus{outline:none;border-color:var(--c-brand-500);background:#fff;box-shadow:0 0 0 4px rgba(42,121,216,.14);}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);background:#fff;place-items:center;color:var(--c-brand-900);cursor:pointer;transition:all .18s ease-out;}
.nav-toggle svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;}
.nav-toggle:hover{border-color:var(--c-brand-500);}

/* ============ buttons / badges ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;cursor:pointer;white-space:nowrap;transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px -10px rgba(242,129,29,.8);}
.btn-primary:hover{background:var(--c-accent-dark);transform:translateY(-1px);}
.btn-brand{background:var(--c-brand-700);color:#fff;}
.btn-brand:hover{background:var(--c-brand-800);transform:translateY(-1px);}
.btn-ghost{background:#fff;color:var(--c-brand-700);border-color:var(--c-line);}
.btn-ghost:hover{border-color:var(--c-brand-500);color:var(--c-brand-900);transform:translateY(-1px);box-shadow:var(--sh-sm);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.35);}
.btn-ghost-light:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.04em;}
.badge-brand{background:var(--c-brand-700);color:#fff;}
.badge-soft{background:var(--c-brand-50);color:var(--c-brand-700);}
.badge-mint{background:var(--c-mint-soft);color:#0B7F72;}
.badge-accent{background:var(--c-accent-soft);color:#B65B0C;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-brand-700);transition:color .18s ease-out;}
.link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease-out;}
.link-arrow:hover{color:var(--c-brand-900);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-bg);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;min-height:52px;font-size:13px;color:var(--c-ink-3);}
.crumb a{color:var(--c-ink-2);transition:color .18s ease-out;}
.crumb a:hover{color:var(--c-brand-700);}
.crumb .sep{color:#C2CCDB;}
.crumb .current{color:var(--c-ink-3);}

/* ============ 文章头部 ============ */
.article-top{background:linear-gradient(150deg,var(--c-bg) 0%,var(--c-brand-50) 100%);border-bottom:1px solid var(--c-line);}
.article-head{max-width:800px;margin:0 auto;padding:48px 0 36px;}
.article-head h1{font-size:clamp(26px,3.4vw,38px);font-weight:700;line-height:1.28;letter-spacing:-.01em;color:var(--c-ink);margin:16px 0 18px;}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--c-ink-3);}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C2CCDB;}

/* ============ 正文 ============ */
.article-wrap{padding:56px 0 8px;}
.article-body{max-width:760px;margin:0 auto;font-size:16px;line-height:1.9;color:var(--c-ink-2);overflow-wrap:break-word;}
.article-body p{margin:0 0 20px;}
.article-body h2{position:relative;font-size:24px;font-weight:600;line-height:1.35;color:var(--c-ink);margin:40px 0 16px;padding-left:14px;}
.article-body h2::before{content:"";position:absolute;left:0;top:7px;width:4px;height:18px;border-radius:2px;background:var(--c-accent);}
.article-body h3{font-size:20px;font-weight:600;line-height:1.4;color:var(--c-ink);margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.4em;}
.article-body li{margin-bottom:8px;line-height:1.85;}
.article-body li::marker{color:var(--c-brand-500);}
.article-body a{color:var(--c-brand-700);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-brand-900);}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body blockquote{margin:24px 0;padding:20px 24px;background:var(--c-brand-50);border-left:3px solid var(--c-accent);border-radius:0 12px 12px 0;color:var(--c-ink-2);}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{max-width:100%;height:auto;border-radius:12px;margin:24px auto;background:var(--c-brand-50);}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px;}
.article-body table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;font-size:14px;margin:20px 0;}
.article-body th{background:var(--c-brand-50);color:var(--c-ink);font-weight:600;text-align:left;padding:12px 16px;border:1px solid var(--c-line);white-space:nowrap;}
.article-body td{padding:12px 16px;border:1px solid var(--c-line);color:var(--c-ink-2);}
.article-body pre{background:#F1F4F9;border-radius:10px;padding:16px 18px;overflow-x:auto;font-size:13px;line-height:1.7;}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;background:#F1F4F9;padding:2px 6px;border-radius:6px;color:var(--c-brand-700);}
.article-body pre code{background:none;padding:0;color:var(--c-ink-2);}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:32px 0;}

/* 空态 */
.empty-state{max-width:760px;margin:0 auto;padding:56px 28px;text-align:center;background:var(--c-surface);border:1.5px dashed var(--c-line);border-radius:var(--r-md);}
.empty-state svg{width:44px;height:44px;stroke:var(--c-brand-500);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin:0 auto 16px;}
.empty-state h2{font-size:20px;font-weight:600;color:var(--c-ink);margin:0 0 8px;}
.empty-state p{font-size:14px;color:var(--c-ink-3);margin:0 0 22px;}

/* ============ 文章底部 ============ */
.article-foot{max-width:760px;margin:0 auto;padding:0 0 8px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px;}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;background:var(--c-surface);border:1px solid var(--c-line);font-size:13px;color:var(--c-ink-2);transition:all .18s ease-out;}
.tag:hover{border-color:var(--c-brand-500);color:var(--c-brand-700);background:var(--c-brand-50);}
.foot-divider{height:1px;background:var(--c-line);margin:28px 0;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.post-nav a{display:flex;flex-direction:column;gap:4px;padding:16px 20px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-sm);transition:all .18s ease-out;}
.post-nav a:hover{border-color:rgba(42,121,216,.45);box-shadow:var(--sh-md);transform:translateY(-2px);}
.post-nav .k{font-size:12px;color:var(--c-ink-3);letter-spacing:.06em;}
.post-nav .v{font-size:15px;font-weight:600;color:var(--c-ink);}
.post-nav a:hover .v{color:var(--c-brand-700);}

/* ============ 相关推荐 ============ */
.related{padding:64px 0 8px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:28px;}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--c-ink);line-height:1.3;letter-spacing:-.01em;}
.section-head p{font-size:14px;color:var(--c-ink-3);margin-top:8px;}
.cards-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{display:flex;flex-direction:column;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-sm);transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:rgba(42,121,216,.35);}
.card-media{position:relative;aspect-ratio:16/10;background:var(--c-brand-50);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out;}
.card:hover .card-media img{transform:scale(1.04);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);}
.card:hover .card-body h3{color:var(--c-brand-700);}
.card-body p{font-size:14px;line-height:1.7;color:var(--c-ink-3);}
.center-btn{display:flex;justify-content:center;margin-top:36px;}

/* ============ CTA ============ */
.cta-band{padding:64px 0 72px;}
.cta-box{display:grid;grid-template-columns:1.35fr .9fr;align-items:center;gap:32px;background:var(--c-brand-900);border-radius:var(--r-lg);padding:48px 48px;position:relative;overflow:hidden;}
.cta-box::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(242,129,29,.22),rgba(242,129,29,0) 70%);}
.cta-box h2{position:relative;font-size:clamp(22px,2.6vw,30px);font-weight:600;line-height:1.35;color:#fff;}
.cta-box p{position:relative;font-size:15px;line-height:1.8;color:rgba(255,255,255,.78);margin-top:12px;max-width:520px;}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-brand-900);color:rgba(255,255,255,.75);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.62);}
.site-footer .brand-mark{background:rgba(255,255,255,.12);color:#fff;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:360px;}
.socials{display:flex;gap:10px;margin-top:22px;}
.socials a{width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.18);display:grid;place-items:center;color:rgba(255,255,255,.8);transition:all .18s ease-out;}
.socials a:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-2px);}
.socials svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease-out;}
.footer-col a:hover{color:#fff;}
.footer-bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.58);}

/* ============ 移动抽屉 ============ */
.drawer{position:fixed;inset:0;z-index:90;background:rgba(11,42,91,.45);opacity:0;visibility:hidden;transition:opacity .2s ease-out,visibility .2s ease-out;}
.drawer.open{opacity:1;visibility:visible;}
.drawer-panel{position:absolute;top:0;right:0;bottom:0;width:min(340px,88vw);background:#fff;padding:22px 20px 28px;overflow-y:auto;transform:translateX(100%);transition:transform .24s ease-out;display:flex;flex-direction:column;}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-title{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-ink-3);margin-bottom:10px;}
.drawer-panel .d-link{display:flex;align-items:center;min-height:52px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);transition:color .18s ease-out;}
.drawer-panel .d-link:hover{color:var(--c-brand-700);}
.drawer-panel .d-link.active{color:var(--c-brand-700);font-weight:600;}
.drawer-actions{display:grid;gap:10px;margin-top:24px;}
.drawer-actions .btn{width:100%;}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav-links{gap:20px;}
  .nav-search{display:none;}
}
@media (max-width:1024px){
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .cta-box{grid-template-columns:1fr;padding:40px 32px;}
  .cta-actions{justify-content:flex-start;}
  .cards-3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .container{padding:0 22px;}
  .article-head{padding:36px 0 28px;}
  .article-wrap{padding:40px 0 4px;}
  .related{padding:48px 0 4px;}
  .cta-band{padding:48px 0 56px;}
  .post-nav{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:640px){
  .container{padding:0 20px;}
  .nav{height:64px;gap:12px;}
  .nav-actions .btn-ghost{display:none;}
  .brand-name{font-size:16px;}
  .brand-sub{font-size:11px;}
  .cards-3{grid-template-columns:1fr;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .cta-box{padding:32px 22px;border-radius:18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
    --c-brand-900:#0B2A5B;
    --c-brand-700:#14488F;
    --c-brand-600:#1B5FBF;
    --c-brand-500:#2A79D8;
    --c-brand-50:#EEF4FD;
    --c-accent:#F2811D;
    --c-accent-soft:#FFF1E4;
    --c-mint:#12A594;
    --c-mint-soft:#E6F6F3;
    --c-ink:#0F1B2B;
    --c-ink-2:#3C4A60;
    --c-ink-3:#6B7A90;
    --c-bg:#F7F9FC;
    --c-surface:#FFFFFF;
    --c-line:#E3E9F2;
    --r-card:16px;
    --r-lg:24px;
    --r-img:12px;
    --r-btn:999px;
    --sh-sm:0 1px 2px rgba(15,27,43,.06);
    --sh-md:0 6px 20px -8px rgba(15,27,43,.12);
    --sh-lg:0 18px 40px -20px rgba(15,27,43,.22);
    --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto}
    *{transition:none !important;animation:none !important}
  }
  body.page-body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    color:var(--c-ink-2);
    background:var(--c-surface);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none;transition:color .18s ease-out}
  button{font-family:inherit}
  ul,ol{margin:0;padding:0}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  @media (max-width:640px){.container{padding:0 20px}}

  /* ---------- header / nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.92);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--c-line);
    transition:box-shadow .2s ease-out;
  }
  .site-header.is-stuck{box-shadow:var(--sh-sm)}
  .nav{display:flex;align-items:center;gap:22px;height:72px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;background:var(--c-brand-50);
    display:grid;place-items:center;flex-shrink:0;
  }
  .brand-mark svg{width:20px;height:20px;stroke:var(--c-brand-700);fill:none}
  .brand-name{display:block;font-size:18px;font-weight:700;color:var(--c-brand-900);line-height:1.25;letter-spacing:-.01em}
  .brand-sub{display:block;font-size:12px;font-weight:500;color:var(--c-ink-3);line-height:1.4;letter-spacing:.05em}
  .nav-links{display:flex;align-items:center;gap:30px;margin-left:14px}
  .nav-links a{
    position:relative;display:inline-block;font-size:15px;color:var(--c-ink-2);
    padding:8px 0;transition:color .18s ease-out;
  }
  .nav-links a:hover{color:var(--c-brand-700)}
  .nav-links a.active{color:var(--c-brand-900);font-weight:600}
  .nav-links a.active::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
    border-radius:3px;background:var(--c-accent);
  }
  .nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
  .nav-search{position:relative;display:flex;align-items:center}
  .nav-search svg{
    position:absolute;left:13px;width:16px;height:16px;
    stroke:var(--c-ink-3);fill:none;pointer-events:none;
  }
  .nav-search input{
    width:228px;height:40px;border-radius:var(--r-btn);
    border:1px solid transparent;background:var(--c-bg);
    padding:0 14px 0 38px;font-size:14px;color:var(--c-ink);
    transition:border-color .18s ease-out,box-shadow .18s ease-out,background .18s ease-out;
  }
  .nav-search input::placeholder{color:var(--c-ink-3)}
  .nav-search input:focus{
    outline:none;background:#fff;border-color:var(--c-brand-500);
    box-shadow:0 0 0 4px rgba(42,121,216,.14);
  }

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
    cursor:pointer;white-space:nowrap;
    transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn svg{width:16px;height:16px;fill:none;stroke-width:1.8;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease-out}
  .btn-sm{height:40px;padding:0 20px;font-size:14px}
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px -12px rgba(242,129,29,.9)}
  .btn-primary:hover{background:#dd6f10;transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(242,129,29,.85)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand-700)}
  .btn-ghost:hover{background:var(--c-brand-50);border-color:var(--c-brand-500);color:var(--c-brand-900)}
  .btn-brand{background:var(--c-brand-700);color:#fff}
  .btn-brand:hover{background:var(--c-brand-600);transform:translateY(-1px)}
  .btn-link{
    display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
    color:var(--c-brand-700);
  }
  .btn-link svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease-out}
  .btn-link:hover{color:var(--c-brand-900)}
  .btn-link:hover svg{transform:translateX(3px)}
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:12px;
    border:1px solid var(--c-line);background:#fff;color:var(--c-brand-700);
    place-items:center;cursor:pointer;
  }
  .nav-toggle svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round}

  /* ---------- mobile drawer ---------- */
  .mobile-drawer{
    position:fixed;inset:0;z-index:80;background:#fff;display:none;
    flex-direction:column;padding:18px 20px 28px;overflow-y:auto;
  }
  .mobile-drawer.open{display:flex}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line)}
  .drawer-close{
    width:40px;height:40px;border-radius:12px;border:1px solid var(--c-line);
    background:#fff;color:var(--c-brand-700);display:grid;place-items:center;cursor:pointer;
  }
  .drawer-close svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round}
  .drawer-links{display:flex;flex-direction:column;margin-top:8px}
  .drawer-links a{
    display:flex;align-items:center;justify-content:space-between;
    font-size:16px;color:var(--c-ink);line-height:52px;
    border-bottom:1px solid var(--c-line);
  }
  .drawer-links a.active{color:var(--c-brand-700);font-weight:600}
  .drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px}
  .drawer-actions .btn{width:100%}

  /* ---------- breadcrumb ---------- */
  .breadcrumb{background:#fff;border-bottom:1px solid var(--c-line)}
  .breadcrumb-inner{
    display:flex;align-items:center;flex-wrap:wrap;gap:8px;
    min-height:52px;font-size:13px;color:var(--c-ink-3);
  }
  .breadcrumb-inner a{color:var(--c-ink-2)}
  .breadcrumb-inner a:hover{color:var(--c-brand-700)}
  .breadcrumb-inner .sep{color:#c3ccd9}
  .breadcrumb-inner .current{color:var(--c-ink-3)}

  /* ---------- page hero ---------- */
  .page-hero{background:linear-gradient(135deg,var(--c-bg) 0%,var(--c-brand-50) 100%);padding:52px 0 56px}
  .page-hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--c-line);color:var(--c-brand-700);
    font-size:12px;font-weight:600;letter-spacing:.08em;
    padding:6px 14px;border-radius:var(--r-btn);
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
  .page-hero h1{
    font-size:clamp(28px,3.6vw,44px);line-height:1.2;font-weight:700;
    color:var(--c-ink);letter-spacing:-.01em;margin:18px 0 16px;
  }
  .page-hero .lead{font-size:16px;line-height:1.8;color:var(--c-ink-2);max-width:36em}
  .hero-meta{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px}
  .hero-meta span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--c-ink-3)}
  .hero-meta svg{width:16px;height:16px;stroke:var(--c-mint);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .hero-figure{position:relative}
  .hero-figure::before{
    content:"";position:absolute;inset:16px -16px -16px 16px;
    background:#fff;border-radius:20px;box-shadow:var(--sh-sm);
  }
  .hero-figure img{
    position:relative;width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:16px;box-shadow:var(--sh-md);background:var(--c-brand-50);
  }

  /* ---------- sections ---------- */
  .section{padding:88px 0}
  .section-tight{padding:64px 0}
  .section-alt{background:var(--c-bg)}
  .section-head{max-width:640px;margin-bottom:40px}
  .section-head h2{
    font-size:clamp(24px,2.6vw,32px);line-height:1.3;font-weight:600;
    color:var(--c-ink);letter-spacing:-.01em;margin-bottom:12px;
  }
  .section-head p{font-size:15px;color:var(--c-ink-3);line-height:1.8}
  .kicker{
    font-size:12px;font-weight:600;letter-spacing:.1em;
    color:var(--c-brand-700);margin-bottom:10px;display:block;
  }

  /* ---------- steps layout ---------- */
  .steps-layout{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start}
  .timeline{position:relative}
  .timeline-item{position:relative;padding:0 0 36px 76px}
  .timeline-item::before{
    content:"";position:absolute;left:21px;top:52px;bottom:6px;width:2px;
    background:var(--c-line);
  }
  .timeline-item:last-child{padding-bottom:0}
  .timeline-item:last-child::before{display:none}
  .step-num{
    position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;
    background:var(--c-brand-700);color:#fff;font-size:16px;font-weight:700;
    display:grid;place-items:center;
    box-shadow:0 8px 18px -10px rgba(20,72,143,.85);
  }
  .timeline-item h3{font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.4;padding-top:8px;margin-bottom:8px}
  .timeline-item p{font-size:15px;line-height:1.8;color:var(--c-ink-2);max-width:40em}
  .step-tip{
    display:inline-flex;align-items:center;gap:6px;margin-top:12px;
    font-size:13px;color:var(--c-brand-700);background:var(--c-brand-50);
    padding:5px 12px;border-radius:var(--r-btn);
  }
  .step-tip svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

  /* ---------- sticky side card ---------- */
  .side-card{
    position:sticky;top:96px;
    border:1.5px dashed var(--c-line);border-radius:var(--r-card);
    background:#fff;padding:24px;box-shadow:var(--sh-sm);
  }
  .side-card h3{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
  .side-card .side-sub{font-size:13px;color:var(--c-ink-3);margin-bottom:14px}
  .check-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
  .check-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--c-ink-2)}
  .check-list svg{width:18px;height:18px;flex-shrink:0;margin-top:3px;stroke:var(--c-mint);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
  .side-card .btn{width:100%}
  .side-note{font-size:12px;color:var(--c-ink-3);margin-top:12px;line-height:1.7;text-align:center}

  /* ---------- pre-check cards ---------- */
  .pre-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px}
  .card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:var(--sh-md);padding:26px;
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:rgba(42,121,216,.32)}
  .card-figure{padding:0;overflow:hidden}
  .card-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card) var(--r-card) 0 0;background:var(--c-brand-50)}
  .card-figure .card-body{padding:24px 26px 26px}
  .card h3{font-size:19px;font-weight:600;color:var(--c-ink);margin-bottom:10px}
  .card p{font-size:14.5px;line-height:1.8;color:var(--c-ink-2)}
  .pre-stack{display:grid;gap:24px}
  .mini-card{
    display:flex;gap:18px;align-items:flex-start;
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:var(--sh-md);padding:24px;
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:rgba(42,121,216,.32)}
  .icon-box{
    width:48px;height:48px;border-radius:14px;display:grid;place-items:center;flex-shrink:0;
    background:var(--c-brand-50);
  }
  .icon-box svg{width:24px;height:24px;stroke:var(--c-brand-700);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .icon-box.mint{background:var(--c-mint-soft)}
  .icon-box.mint svg{stroke:var(--c-mint)}
  .icon-box.accent{background:var(--c-accent-soft)}
  .icon-box.accent svg{stroke:var(--c-accent)}
  .mini-card h3{font-size:17px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
  .mini-card p{font-size:14px;line-height:1.75;color:var(--c-ink-2)}

  /* ---------- device split ---------- */
  .split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
  .split-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-md);background:var(--c-brand-50)}
  .split ul{list-style:none;display:flex;flex-direction:column;gap:14px;margin-top:22px}
  .split ul li{display:flex;gap:12px;font-size:15px;line-height:1.75;color:var(--c-ink-2)}
  .split ul svg{width:20px;height:20px;flex-shrink:0;margin-top:3px;stroke:var(--c-brand-500);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

  /* ---------- tags ---------- */
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
  .tag{
    font-size:13px;padding:5px 12px;border-radius:var(--r-btn);
    background:var(--c-brand-50);color:var(--c-brand-700);font-weight:500;
  }
  .tag.plain{background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2)}

  /* ---------- FAQ ---------- */
  .faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
  .faq-aside h2{font-size:clamp(24px,2.6vw,32px);font-weight:600;color:var(--c-ink);line-height:1.3;margin-bottom:12px}
  .faq-aside p{font-size:15px;color:var(--c-ink-3);line-height:1.8;margin-bottom:22px}
  .faq-item{
    background:#fff;border:1px solid var(--c-line);border-radius:12px;
    margin-bottom:12px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
  }
  .faq-item.open{border-color:rgba(42,121,216,.35);box-shadow:var(--sh-sm)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:none;border:0;text-align:left;cursor:pointer;
    padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
  }
  .faq-q svg{width:20px;height:20px;flex-shrink:0;stroke:var(--c-brand-700);fill:none;stroke-width:1.8;stroke-linecap:round;transition:transform .22s ease-out}
  .faq-item.open .faq-q svg{transform:rotate(45deg)}
  .faq-a{
    max-height:0;overflow:hidden;padding:0 20px;
    font-size:15px;line-height:1.85;color:var(--c-ink-2);
    transition:max-height .26s ease-out,padding .26s ease-out;
  }
  .faq-item.open .faq-a{max-height:360px;padding-bottom:20px}

  /* ---------- CTA band ---------- */
  .cta-band{
    background:var(--c-brand-50);border:1px solid #dbe7fa;border-radius:var(--r-lg);
    padding:40px 48px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  }
  .cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:600;color:var(--c-brand-900);line-height:1.4;margin-bottom:8px}
  .cta-band p{font-size:15px;color:var(--c-ink-2);line-height:1.8;max-width:44em}
  .cta-band .cta-actions{display:flex;gap:12px;flex-shrink:0}

  /* ---------- footer ---------- */
  .site-footer{background:var(--c-brand-900);color:rgba(255,255,255,.72);padding:64px 0 8px;margin-top:8px}
  .footer-grid{display:grid;grid-template-columns:4fr 2.4fr 2.4fr 2.4fr;gap:40px}
  .footer-brand .brand-mark{background:rgba(255,255,255,.12)}
  .footer-brand .brand-mark svg{stroke:#fff}
  .footer-brand .brand-name{color:#fff}
  .footer-brand .brand-sub{color:rgba(255,255,255,.6)}
  .footer-brand p{font-size:14px;line-height:1.85;margin:18px 0 20px;max-width:34em;color:rgba(255,255,255,.68)}
  .socials{display:flex;gap:12px}
  .socials a{
    width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
    background:rgba(255,255,255,.08);transition:background .18s ease-out,transform .18s ease-out;
  }
  .socials a:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
  .socials svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.02em}
  .footer-col ul{list-style:none}
  .footer-col li a{font-size:14px;color:rgba(255,255,255,.72);line-height:2.2;transition:color .18s ease-out}
  .footer-col li a:hover{color:#fff}
  .footer-bottom{
    margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0 16px;display:flex;align-items:center;justify-content:space-between;
    gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);
  }
  .footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap}
  .footer-bottom nav a{color:rgba(255,255,255,.66)}
  .footer-bottom nav a:hover{color:#fff}

  /* ---------- responsive ---------- */
  @media (max-width:1023px){
    .nav-links{display:none}
    .nav-search{display:none}
    .nav-toggle{display:grid}
    .nav{gap:16px}
    .steps-layout{grid-template-columns:1fr;gap:36px}
    .side-card{position:static}
    .page-hero-grid{grid-template-columns:1fr;gap:32px}
    .hero-figure{max-width:560px}
    .pre-grid{grid-template-columns:1fr}
    .split{grid-template-columns:1fr;gap:32px}
    .faq-layout{grid-template-columns:1fr;gap:32px}
    .section{padding:64px 0}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  }
  @media (max-width:767px){
    .nav{height:64px}
    .brand-name{font-size:16px}
    .brand-sub{font-size:11px}
    .nav-actions .btn-ghost{display:none}
    .page-hero{padding:36px 0 44px}
    .page-hero .lead{font-size:15px}
    .section{padding:52px 0}
    .timeline-item{padding-left:64px}
    .timeline-item::before{left:19px}
    .step-num{width:40px;height:40px;font-size:15px}
    .card,.mini-card{padding:20px}
    .card-figure .card-body{padding:20px}
    .cta-band{padding:26px 22px;border-radius:18px}
    .cta-band .cta-actions{width:100%;flex-wrap:wrap}
    .cta-band .cta-actions .btn{flex:1 1 auto}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bottom{flex-direction:column;align-items:flex-start}
  }
  @media (max-width:520px){
    .hero-meta{gap:12px}
    .nav-actions{gap:8px}
    .btn{padding:0 20px;font-size:14px}
    .btn-sm{padding:0 16px;font-size:13px}
    .mini-card{flex-direction:column;gap:14px}
  }

/* roulang page: category2 */
:root{
    --c-brand-900:#0B2A5B;
    --c-brand-700:#14488F;
    --c-brand-600:#1B5FBF;
    --c-brand-500:#2A79D8;
    --c-brand-50:#EEF4FD;
    --c-accent:#F2811D;
    --c-accent-soft:#FFF1E4;
    --c-mint:#12A594;
    --c-mint-soft:#E6F6F3;
    --c-ink:#0F1B2B;
    --c-ink-2:#3C4A60;
    --c-ink-3:#6B7A90;
    --c-bg:#F7F9FC;
    --c-surface:#FFFFFF;
    --c-line:#E3E9F2;
    --r-sm:10px;
    --r-md:16px;
    --r-lg:24px;
    --sh-sm:0 1px 2px rgba(15,27,43,.06);
    --sh-md:0 6px 20px -8px rgba(15,27,43,.12);
    --sh-lg:0 18px 40px -20px rgba(15,27,43,.22);
    --sp-1:8px;--sp-2:12px;--sp-3:16px;--sp-4:24px;--sp-5:32px;--sp-6:48px;--sp-7:64px;--sp-8:96px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
    color:var(--c-ink-2);
    background:var(--c-bg);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  h1,h2,h3,h4{color:var(--c-ink);margin:0;line-height:1.3;font-weight:600}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  ul{margin:0;padding:0;list-style:none}
  button{font-family:inherit}
  ::selection{background:var(--c-brand-50);color:var(--c-brand-900)}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  .section{padding:96px 0}
  .section-tight{padding:72px 0}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
  .section-head h2{font-size:clamp(24px,2.6vw,34px);letter-spacing:-.01em}
  .section-head p{font-size:15px;color:var(--c-ink-3);margin-top:10px;max-width:640px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.08em;
    color:var(--c-brand-700);background:var(--c-brand-50);
    padding:6px 14px;border-radius:999px;
  }
  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-700);font-size:15px;font-weight:600;transition:color .18s}
  .link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s}
  .link-arrow:hover{color:var(--c-brand-900)}
  .link-arrow:hover svg{transform:translateX(3px)}
  .link-arrow:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--c-line);
    transition:box-shadow .18s ease;
  }
  .site-header.is-stuck{box-shadow:var(--sh-sm)}
  .nav{display:flex;align-items:center;gap:28px;height:72px}
  .brand{display:flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;
    background:var(--c-brand-50);color:var(--c-brand-700);
    display:grid;place-items:center;flex:none;
  }
  .brand-mark svg{width:20px;height:20px;stroke:currentColor;fill:none}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-name{font-size:18px;font-weight:700;color:var(--c-brand-900);letter-spacing:-.01em}
  .brand-sub{font-size:13px;font-weight:500;color:var(--c-ink-3)}
  .nav-links{display:flex;align-items:center;gap:28px;margin-left:8px}
  .nav-links a{position:relative;font-size:15px;color:var(--c-ink-2);padding:8px 0;transition:color .18s;white-space:nowrap}
  .nav-links a:hover{color:var(--c-brand-700)}
  .nav-links a.active{color:var(--c-brand-900);font-weight:600}
  .nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;border-radius:3px;background:var(--c-accent)}
  .nav-links a:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:3px;border-radius:6px}
  .nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
  .nav-search{position:relative;display:flex;align-items:center}
  .nav-search svg{position:absolute;left:13px;width:16px;height:16px;stroke:var(--c-ink-3);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}
  .nav-search input{
    width:230px;height:40px;border-radius:999px;
    border:1px solid var(--c-line);background:var(--c-bg);
    padding:0 14px 0 38px;font-size:14px;color:var(--c-ink);
    outline:none;transition:border-color .18s,box-shadow .18s,background .18s;
  }
  .nav-search input::placeholder{color:var(--c-ink-3)}
  .nav-search input:focus{border-color:var(--c-brand-500);background:#fff;box-shadow:0 0 0 4px rgba(42,121,216,.14)}
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:12px;
    border:1px solid var(--c-line);background:#fff;color:var(--c-brand-900);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-toggle svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .nav-toggle:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px}

  /* 移动抽屉 */
  .drawer{
    position:fixed;inset:72px 0 0 0;z-index:70;
    background:#fff;padding:24px;overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
  }
  .drawer.open{transform:none;opacity:1;visibility:visible}
  .drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    height:52px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);
  }
  .drawer a.drawer-link.is-active{color:var(--c-brand-700);font-weight:600}
  .drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:24px}
  .drawer-actions .btn{width:100%}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:600;border:1px solid transparent;
    cursor:pointer;white-space:nowrap;
    transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  }
  .btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .btn-sm{height:40px;padding:0 18px;font-size:14px}
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-sm)}
  .btn-primary:hover{background:#dd7112;transform:translateY(-1px);box-shadow:var(--sh-md)}
  .btn-brand{background:var(--c-brand-700);color:#fff}
  .btn-brand:hover{background:var(--c-brand-600);transform:translateY(-1px);box-shadow:var(--sh-md)}
  .btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-brand-700)}
  .btn-ghost:hover{border-color:var(--c-brand-500);color:var(--c-brand-900);transform:translateY(-1px)}
  .btn:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px}
  .btn:active{transform:translateY(0)}

  /* ---------- 页头 ---------- */
  .page-hero{
    background:linear-gradient(135deg,#FFFFFF 0%,var(--c-brand-50) 100%);
    border-bottom:1px solid var(--c-line);
    padding:72px 0 64px;
    position:relative;
    overflow:hidden;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(115deg,rgba(27,95,191,.05) 1px,transparent 1px);
    background-size:26px 26px;
    opacity:.5;
  }
  .hero-inner{position:relative;z-index:1;max-width:820px;margin:0 auto;text-align:center}
  .hero-inner h1{
    font-size:clamp(28px,3.6vw,44px);
    font-weight:700;letter-spacing:-.01em;line-height:1.22;
    margin-top:20px;color:var(--c-brand-900);
  }
  .hero-lead{margin:18px auto 0;max-width:660px;font-size:16px;line-height:1.85;color:var(--c-ink-2)}
  .chip-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:28px}
  .chip{
    height:40px;padding:0 20px;border-radius:999px;
    border:1px solid var(--c-line);background:#fff;
    color:var(--c-ink-2);font-size:14px;font-weight:500;cursor:pointer;
    transition:all .18s ease;
  }
  .chip:hover{border-color:var(--c-brand-500);color:var(--c-brand-700)}
  .chip.is-active{background:var(--c-brand-700);border-color:var(--c-brand-700);color:#fff;box-shadow:var(--sh-sm)}
  .chip:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px}

  /* ---------- 功能卡矩阵 ---------- */
  .feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
  .feature-card{
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-md);
    box-shadow:var(--sh-md);
    overflow:hidden;
    transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
    display:flex;flex-direction:column;
  }
  .feature-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg);border-color:rgba(42,121,216,.3)}
  .feature-lg{grid-column:span 6}
  .feature-md{grid-column:span 4;padding:26px}
  .feature-card .thumb{aspect-ratio:16/9;object-fit:cover;width:100%;background:var(--c-brand-50)}
  .feature-lg .body{padding:24px 26px 28px}
  .feature-lg h3{font-size:21px;margin-bottom:10px}
  .feature-lg p{font-size:15px;color:var(--c-ink-2);line-height:1.8}
  .feature-lg .link-arrow{margin-top:16px}
  .icon-box{
    width:46px;height:46px;border-radius:12px;
    background:var(--c-brand-50);color:var(--c-brand-700);
    display:grid;place-items:center;margin-bottom:16px;
  }
  .icon-box.mint{background:var(--c-mint-soft);color:var(--c-mint)}
  .icon-box.orange{background:var(--c-accent-soft);color:#C25F0C}
  .icon-box svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
  .feature-md h3{font-size:18px;margin-bottom:8px}
  .feature-md p{font-size:14px;color:var(--c-ink-3);line-height:1.8}

  /* ---------- 对比表 ---------- */
  .table-wrap{
    background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-md);box-shadow:var(--sh-md);
    overflow-x:auto;
  }
  table.compare{width:100%;border-collapse:collapse;min-width:640px;font-size:15px}
  table.compare thead th{
    background:var(--c-brand-900);color:#fff;font-weight:600;
    text-align:left;padding:16px 20px;font-size:14px;letter-spacing:.02em;
    white-space:nowrap;
  }
  table.compare tbody td{padding:15px 20px;border-top:1px solid var(--c-line);color:var(--c-ink-2);vertical-align:top}
  table.compare tbody tr:nth-child(even){background:var(--c-bg)}
  table.compare tbody tr:hover{background:var(--c-brand-50)}
  table.compare td:first-child{font-weight:600;color:var(--c-ink)}
  .tag-yes{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#0B7A6C;background:var(--c-mint-soft);border-radius:999px;padding:2px 10px}
  .tag-no{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--c-ink-3);background:var(--c-bg);border:1px solid var(--c-line);border-radius:999px;padding:2px 10px}

  /* ---------- 步骤 ---------- */
  .flow{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
  .flow-step{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);padding:28px 24px;box-shadow:var(--sh-sm);transition:transform .18s,box-shadow .18s}
  .flow-step:hover{transform:translateY(-3px);box-shadow:var(--sh-md)}
  .step-no{
    width:44px;height:44px;border-radius:50%;background:var(--c-brand-700);color:#fff;
    display:grid;place-items:center;font-size:16px;font-weight:700;margin-bottom:16px;
  }
  .flow-step h3{font-size:18px;margin-bottom:8px}
  .flow-step p{font-size:14px;color:var(--c-ink-3);line-height:1.8}

  /* ---------- 场景（非对称图文） ---------- */
  .split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
  .split-media{position:relative}
  .split-media img{border-radius:var(--r-md);box-shadow:var(--sh-md);aspect-ratio:4/3;object-fit:cover;width:100%;background:var(--c-brand-50)}
  .split-media::before{
    content:"";position:absolute;inset:14px -14px -14px 14px;
    border-radius:var(--r-md);background:var(--c-brand-50);z-index:-1;
  }
  .split-text h2{font-size:clamp(24px,2.4vw,32px);margin-bottom:16px}
  .split-text p{font-size:15px;color:var(--c-ink-2);line-height:1.85;margin-bottom:14px}
  .mini-list{margin-top:20px;display:grid;gap:12px}
  .mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--c-ink-2)}
  .mini-list svg{width:18px;height:18px;flex:none;margin-top:4px;stroke:var(--c-mint);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

  /* ---------- FAQ ---------- */
  .faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
  .faq-list{display:grid;gap:12px}
  .faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;transition:border-color .18s,box-shadow .18s}
  .faq-item.open{border-color:rgba(42,121,216,.4);box-shadow:var(--sh-sm)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:none;border:0;padding:18px 20px;text-align:left;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--c-ink);
  }
  .faq-q:focus-visible{outline:2px solid var(--c-brand-500);outline-offset:-2px;border-radius:12px}
  .faq-q .plus{width:20px;height:20px;flex:none;stroke:var(--c-brand-700);fill:none;stroke-width:2;stroke-linecap:round;transition:transform .2s ease}
  .faq-item.open .plus{transform:rotate(45deg)}
  .faq-a{display:none;padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}
  .faq-item.open .faq-a{display:block}

  /* ---------- CTA 横条 ---------- */
  .cta-band{
    background:var(--c-brand-50);
    border:1px solid var(--c-line);
    border-radius:var(--r-lg);
    padding:44px 48px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    flex-wrap:wrap;
  }
  .cta-band h2{font-size:clamp(22px,2.2vw,28px);color:var(--c-brand-900)}
  .cta-band p{margin-top:10px;font-size:15px;color:var(--c-ink-2);max-width:560px}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* ---------- 面包屑 ---------- */
  .crumbs{background:var(--c-bg);border-bottom:1px solid var(--c-line);font-size:13px;color:var(--c-ink-3)}
  .crumbs .container{display:flex;align-items:center;gap:8px;height:50px;overflow:hidden;white-space:nowrap}
  .crumbs a:hover{color:var(--c-brand-700)}
  .crumbs .sep{color:#B9C4D4}
  .crumbs .cur{color:var(--c-ink-3)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-brand-900);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:96px}
  .footer-grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px}
  .footer-brand p{font-size:14px;line-height:1.9;margin-top:18px;max-width:330px}
  .site-footer .brand-name{color:#fff}
  .site-footer .brand-sub{color:rgba(255,255,255,.6)}
  .site-footer .brand-mark{background:rgba(255,255,255,.12);color:#fff}
  .socials{display:flex;gap:12px;margin-top:22px}
  .socials a{
    width:38px;height:38px;border-radius:10px;
    background:rgba(255,255,255,.08);
    display:grid;place-items:center;color:rgba(255,255,255,.8);
    transition:background .18s,color .18s,transform .18s;
  }
  .socials a:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}
  .socials svg{width:18px;height:18px;stroke:currentColor;fill:none}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
  .footer-col ul{display:grid;gap:12px}
  .footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s}
  .footer-col a:hover{color:#fff}
  .footer-bottom{
    margin-top:48px;padding-top:20px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:rgba(255,255,255,.55);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .nav-search input{width:180px}
    .nav-links{gap:20px}
  }
  @media (max-width:1024px){
    .nav-links{display:none}
    .nav-search{display:none}
    .nav-toggle{display:inline-flex}
    .section{padding:72px 0}
    .feature-lg{grid-column:span 12}
    .feature-md{grid-column:span 6}
    .split{grid-template-columns:1fr;gap:32px}
    .split-media::before{display:none}
    .faq-wrap{grid-template-columns:1fr;gap:28px}
    .flow{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:2fr 2fr;gap:32px}
    .cta-band{padding:32px}
  }
  @media (max-width:768px){
    .container{padding:0 20px}
    .section{padding:56px 0}
    .section-head{margin-bottom:28px}
    .page-hero{padding:48px 0 44px}
    .feature-md{grid-column:span 12}
    .feature-grid{gap:16px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .footer-brand{grid-column:1/-1}
    .site-footer{margin-top:56px;padding-top:48px}
  }
  @media (max-width:520px){
    .hero-inner h1{font-size:26px}
    .nav{gap:12px}
    .brand-sub{font-size:12px}
    .footer-grid{grid-template-columns:1fr}
    .cta-band{padding:24px}
    .cta-actions .btn{width:100%}
    .chip{height:36px;padding:0 16px;font-size:13px}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *{transition:none!important;animation:none!important}
  }

/* roulang page: category3 */
:root{
    --c-brand-900:#0B2A5B;
    --c-brand-700:#14488F;
    --c-brand-600:#1B5FBF;
    --c-brand-500:#2A79D8;
    --c-brand-50:#EEF4FD;
    --c-accent:#F2811D;
    --c-accent-soft:#FFF1E4;
    --c-mint:#12A594;
    --c-mint-soft:#E6F6F3;
    --c-ink:#0F1B2B;
    --c-ink-2:#3C4A60;
    --c-ink-3:#6B7A90;
    --c-bg:#F7F9FC;
    --c-surface:#FFFFFF;
    --c-line:#E3E9F2;
    --r-card:16px;
    --r-lg:24px;
    --r-sm:12px;
    --shadow-sm:0 1px 2px rgba(15,27,43,.06);
    --shadow-md:0 6px 20px -8px rgba(15,27,43,.12);
    --shadow-lg:0 18px 40px -20px rgba(15,27,43,.22);
    --ease:180ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
    font-size:16px;line-height:1.75;color:var(--c-ink-2);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  input,button,select,textarea{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  svg{display:block;stroke:currentColor;fill:none;}
  :focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:6px;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .sec{padding:88px 0;}
  .sec-sm{padding:64px 0;}
  .sec-head{max-width:720px;margin-bottom:40px;}
  .sec-head h2{font-size:clamp(24px,3vw,32px);font-weight:600;line-height:1.3;color:var(--c-ink);letter-spacing:-.01em;}
  .sec-head p{margin-top:12px;font-size:15px;color:var(--c-ink-3);line-height:1.8;max-width:640px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;
    background:var(--c-brand-50);color:var(--c-brand-700);
    font-size:12.5px;font-weight:500;letter-spacing:.08em;
  }
  .eyebrow-accent{background:var(--c-accent-soft);color:#B85B0C;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border:1px solid transparent;border-radius:999px;
    font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
    transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  }
  .btn svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--shadow-sm);}
  .btn-primary:hover{background:#DA6F10;transform:translateY(-1px);box-shadow:var(--shadow-md);}
  .btn-primary:active{transform:translateY(0);}
  .btn-brand{background:var(--c-brand-700);color:#fff;}
  .btn-brand:hover{background:var(--c-brand-600);transform:translateY(-1px);}
  .btn-ghost{background:var(--c-surface);color:var(--c-brand-700);border-color:var(--c-line);}
  .btn-ghost:hover{border-color:rgba(42,121,216,.42);color:var(--c-brand-600);transform:translateY(-1px);}
  .btn-ghost-dark{background:transparent;color:var(--c-brand-900);border-color:rgba(11,42,91,.18);}
  .btn-ghost-dark:hover{background:#fff;border-color:rgba(11,42,91,.34);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--c-brand-700);font-size:15px;font-weight:600;transition:color var(--ease);}
  .link-arrow svg{width:16px;height:16px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--ease);}
  .link-arrow:hover{color:var(--c-brand-600);}
  .link-arrow:hover svg{transform:translateX(3px);}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:120;
    background:rgba(255,255,255,.9);
    -webkit-backdrop-filter:blur(10px);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--c-line);
    transition:box-shadow var(--ease),background var(--ease);
  }
  .site-header.scrolled{box-shadow:var(--shadow-sm);background:rgba(255,255,255,.96);}
  .nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;background:var(--c-brand-50);
    display:inline-flex;align-items:center;justify-content:center;color:var(--c-brand-700);flex-shrink:0;
  }
  .brand-mark svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:17px;font-weight:700;color:var(--c-brand-900);letter-spacing:.01em;}
  .brand-sub{font-size:12px;font-weight:500;color:var(--c-ink-3);letter-spacing:.04em;margin-top:2px;}
  .nav-links{display:flex;align-items:center;gap:28px;}
  .nav-links a{
    position:relative;padding:6px 0;font-size:15px;color:var(--c-ink-2);
    transition:color var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;border-radius:3px;
    background:var(--c-accent);opacity:0;transform:scaleX(.4);transition:opacity var(--ease),transform var(--ease);
  }
  .nav-links a:hover{color:var(--c-brand-700);}
  .nav-links a.active{color:var(--c-brand-900);font-weight:600;}
  .nav-links a.active::after{opacity:1;transform:scaleX(1);}
  .nav-actions{display:flex;align-items:center;gap:12px;}
  .nav-search{position:relative;display:flex;align-items:center;}
  .nav-search svg{position:absolute;left:13px;width:17px;height:17px;color:var(--c-ink-3);stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;pointer-events:none;}
  .nav-search input{
    width:224px;height:40px;border-radius:999px;padding:0 16px 0 38px;
    background:var(--c-bg);border:1px solid transparent;font-size:14px;color:var(--c-ink);
    transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
  }
  .nav-search input::placeholder{color:var(--c-ink-3);}
  .nav-search input:focus{
    outline:none;background:#fff;border-color:var(--c-brand-500);
    box-shadow:0 0 0 4px rgba(42,121,216,.14);
  }
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--c-line);
    background:#fff;color:var(--c-brand-900);align-items:center;justify-content:center;
    transition:border-color var(--ease),color var(--ease);
  }
  .nav-toggle svg{width:20px;height:20px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .nav-toggle:hover{border-color:rgba(42,121,216,.4);color:var(--c-brand-600);}

  /* ============ 移动端抽屉 ============ */
  .drawer{position:fixed;inset:0;z-index:200;background:rgba(15,27,43,.42);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);}
  .drawer.open{opacity:1;visibility:visible;}
  .drawer-panel{
    position:absolute;top:0;left:0;right:0;background:#fff;
    border-radius:0 0 var(--r-lg) var(--r-lg);padding:20px 20px 26px;
    transform:translateY(-14px);transition:transform var(--ease);
    max-height:92vh;overflow:auto;
  }
  .drawer.open .drawer-panel{transform:translateY(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--c-line);}
  .drawer-head span{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-ink-3);}
  .drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--c-line);background:#fff;color:var(--c-ink-2);display:flex;align-items:center;justify-content:center;}
  .drawer-close svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .drawer-links{display:flex;flex-direction:column;}
  .drawer-links a{
    display:flex;align-items:center;justify-content:space-between;
    min-height:52px;font-size:16px;color:var(--c-ink-2);border-bottom:1px solid var(--c-line);
  }
  .drawer-links a.active{color:var(--c-brand-900);font-weight:600;}
  .drawer-links a.active::after{content:"当前";font-size:12px;font-weight:500;color:var(--c-brand-700);background:var(--c-brand-50);padding:3px 10px;border-radius:999px;}
  .drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:20px;}
  .drawer-actions .btn{width:100%;}

  /* ============ 页头 ============ */
  .page-hero{
    background:linear-gradient(135deg,var(--c-bg) 0%,var(--c-brand-50) 100%);
    border-bottom:1px solid var(--c-line);
    padding:52px 0 40px;
    position:relative;overflow:hidden;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:repeating-linear-gradient(135deg,rgba(11,42,91,.05) 0 1px,transparent 1px 22px);
    opacity:.35;
  }
  .page-hero .container{position:relative;z-index:1;}
  .hero-grid{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start;}
  .hero-grid h1{
    margin-top:16px;
    font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em;
    color:var(--c-brand-900);
  }
  .hero-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--c-ink-2);max-width:660px;}
  .hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:24px;}
  .hero-meta span{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--c-ink-3);}
  .hero-meta svg{width:16px;height:16px;color:var(--c-mint);stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0;}
  .search-card{
    background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:22px;box-shadow:var(--shadow-md);
  }
  .search-card .card-label{font-size:13px;font-weight:600;color:var(--c-ink-3);letter-spacing:.08em;}
  .search-field{position:relative;display:flex;align-items:center;margin-top:12px;}
  .search-field svg{position:absolute;left:14px;width:18px;height:18px;color:var(--c-ink-3);stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;pointer-events:none;}
  .search-field input{
    width:100%;height:44px;border-radius:999px;padding:0 16px 0 42px;font-size:14px;
    background:var(--c-bg);border:1px solid transparent;color:var(--c-ink);
    transition:border-color var(--ease),background var(--ease),box-shadow var(--ease);
  }
  .search-field input:focus{outline:none;background:#fff;border-color:var(--c-brand-500);box-shadow:0 0 0 4px rgba(42,121,216,.14);}
  .hot-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
  .hot-tags a{
    display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
    background:var(--c-brand-50);color:var(--c-brand-700);font-size:12.5px;font-weight:500;
    transition:background var(--ease),color var(--ease);
  }
  .hot-tags a:hover{background:var(--c-brand-600);color:#fff;}
  .hero-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid rgba(11,42,91,.1);}
  .hero-strip a{
    display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;
    background:#fff;border:1px solid var(--c-line);font-size:13.5px;color:var(--c-ink-2);font-weight:500;
    transition:border-color var(--ease),color var(--ease),transform var(--ease);
  }
  .hero-strip a b{color:var(--c-brand-700);font-weight:700;}
  .hero-strip a:hover{border-color:rgba(42,121,216,.42);color:var(--c-brand-700);transform:translateY(-1px);}

  /* ============ 问答主体 ============ */
  .guide-layout{display:grid;grid-template-columns:minmax(220px,4fr) minmax(0,8fr);gap:40px;align-items:start;}
  .anchor-col{position:sticky;top:96px;}
  .anchor-nav{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;box-shadow:var(--shadow-sm);}
  .anchor-nav .anchor-title{font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--c-ink-3);padding:4px 12px 10px;}
  .anchor-nav a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:11px 12px;border-radius:10px;border-left:3px solid transparent;
    font-size:14.5px;color:var(--c-ink-3);transition:background var(--ease),color var(--ease),border-color var(--ease);
  }
  .anchor-nav a span{font-size:12px;color:var(--c-ink-3);background:var(--c-bg);border-radius:999px;padding:2px 8px;transition:background var(--ease),color var(--ease);}
  .anchor-nav a:hover{background:var(--c-bg);color:var(--c-brand-700);}
  .anchor-nav a.active{border-left-color:var(--c-accent);background:var(--c-brand-50);color:var(--c-brand-700);font-weight:600;}
  .anchor-nav a.active span{background:#fff;color:var(--c-brand-700);}
  .anchor-foot{margin-top:14px;padding-top:14px;border-top:1px dashed var(--c-line);}
  .anchor-foot p{font-size:13px;line-height:1.7;color:var(--c-ink-3);padding:0 12px;}
  .anchor-foot .btn{width:100%;margin-top:12px;}

  .faq-col{display:flex;flex-direction:column;gap:36px;}
  .faq-group{scroll-margin-top:100px;}
  .group-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .group-head h3{font-size:20px;font-weight:600;color:var(--c-ink);line-height:1.4;}
  .count-badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:var(--c-brand-50);color:var(--c-brand-700);font-size:12px;font-weight:500;}
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-sm);transition:border-color var(--ease),box-shadow var(--ease);}
  .faq-item.open{border-color:rgba(42,121,216,.42);box-shadow:var(--shadow-sm);}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
    background:transparent;border:0;text-align:left;
    padding:16px 18px;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--c-brand-700);}
  .faq-q .plus{width:20px;height:20px;flex-shrink:0;color:var(--c-brand-700);stroke:currentColor;stroke-width:1.8;stroke-linecap:round;transition:transform var(--ease);}
  .faq-item.open .faq-q .plus{transform:rotate(45deg);}
  .faq-a{padding:0 18px 20px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}
  .faq-a p + p{margin-top:10px;}
  .faq-a[hidden]{display:none;}

  /* ============ 提示卡 ============ */
  .tips-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .tip-card{
    position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:26px 24px 24px 28px;box-shadow:var(--shadow-md);
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .tip-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:4px;border-radius:0 4px 4px 0;}
  .tip-card.t-blue::before{background:var(--c-brand-500);}
  .tip-card.t-mint::before{background:var(--c-mint);}
  .tip-card.t-accent::before{background:var(--c-accent);}
  .tip-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(42,121,216,.3);}
  .tip-icon{
    width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:var(--c-brand-50);color:var(--c-brand-700);margin-bottom:16px;
  }
  .t-mint .tip-icon{background:var(--c-mint-soft);color:var(--c-mint);}
  .t-accent .tip-icon{background:var(--c-accent-soft);color:#C4660E;}
  .tip-icon svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .tip-card h3{font-size:18px;font-weight:600;color:var(--c-ink);line-height:1.45;}
  .tip-card p{margin-top:10px;font-size:14px;line-height:1.8;color:var(--c-ink-3);}

  /* ============ 自查图文 ============ */
  .check-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center;}
  .check-copy h2{margin-top:14px;font-size:clamp(24px,3vw,32px);font-weight:600;line-height:1.3;color:var(--c-ink);}
  .check-copy > p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--c-ink-2);}
  .check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
  .check-list li{display:flex;gap:12px;font-size:15px;line-height:1.7;color:var(--c-ink-2);}
  .check-list li svg{width:20px;height:20px;flex-shrink:0;margin-top:2px;color:var(--c-mint);stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
  .check-list li b{color:var(--c-ink);font-weight:600;}
  .check-copy .btn{margin-top:28px;}
  .check-media{position:relative;}
  .check-media::before{content:"";position:absolute;inset:14px -14px -14px 14px;background:var(--c-brand-50);border-radius:var(--r-card);}
  .check-media img{position:relative;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--shadow-md);background:var(--c-brand-50);}

  /* ============ CTA 横条 ============ */
  .cta-bar{
    display:flex;align-items:center;justify-content:space-between;gap:32px;
    background:var(--c-brand-50);border-radius:var(--r-lg);padding:44px 48px;
  }
  .cta-bar h2{font-size:clamp(22px,2.6vw,28px);font-weight:600;color:var(--c-brand-900);line-height:1.35;}
  .cta-bar p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--c-ink-2);max-width:520px;}
  .cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap;}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--c-brand-900);color:rgba(255,255,255,.72);padding-top:64px;margin-top:24px;}
  .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
  .footer-brand .brand{margin-bottom:18px;}
  .footer-brand .brand-mark{background:rgba(255,255,255,.1);color:#fff;}
  .footer-brand .brand-name{color:#fff;}
  .footer-brand .brand-sub{color:rgba(255,255,255,.6);}
  .footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:340px;}
  .socials{display:flex;gap:10px;margin-top:20px;}
  .socials a{
    width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.08);color:rgba(255,255,255,.82);
    transition:background var(--ease),color var(--ease),transform var(--ease);
  }
  .socials a svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
  .socials a:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px);}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:12px;letter-spacing:.02em;}
  .footer-col li a{display:inline-block;font-size:14px;line-height:2.2;color:rgba(255,255,255,.72);transition:color var(--ease);}
  .footer-col li a:hover{color:#fff;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px;
    align-items:center;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.56);
  }

  /* ============ 响应式 ============ */
  @media (max-width:1100px){
    .nav-search{display:none;}
  }
  @media (max-width:1024px){
    .nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
    .nav-actions .btn-ghost{display:none;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .guide-layout{grid-template-columns:1fr;}
    .anchor-col{position:static;order:2;}
    .faq-col{order:1;}
    .tips-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .check-layout{grid-template-columns:1fr;gap:36px;}
    .check-media{order:-1;}
    .cta-bar{flex-direction:column;align-items:flex-start;padding:36px;gap:24px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .sec{padding:72px 0;}
  }
  @media (max-width:768px){
    .container{padding:0 24px;}
    .hero-meta{gap:16px;}
    .tips-grid{grid-template-columns:1fr;}
    .page-hero{padding:36px 0 32px;}
    .footer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:540px){
    .container{padding:0 20px;}
    .sec{padding:52px 0;}
    .sec-sm{padding:44px 0;}
    .nav{height:64px;gap:12px;}
    .brand-name{font-size:15.5px;}
    .brand-sub{font-size:11px;}
    .hero-grid h1{font-size:28px;}
    .hero-lead{font-size:15px;}
    .hero-strip{gap:8px;}
    .hero-strip a{height:34px;padding:0 12px;font-size:12.5px;}
    .faq-q{font-size:15px;padding:14px 16px;}
    .faq-a{padding:0 16px 18px;font-size:14.5px;}
    .cta-bar{padding:26px 22px;border-radius:18px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;font-size:12.5px;}
    .tip-card{padding:22px 20px 20px 24px;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *{transition:none !important;animation:none !important;}
  }

/* roulang page: category4 */
:root{
    --c-brand-900:#0B2A5B;
    --c-brand-700:#14488F;
    --c-brand-600:#1B5FBF;
    --c-brand-500:#2A79D8;
    --c-brand-50:#EEF4FD;
    --c-accent:#F2811D;
    --c-accent-soft:#FFF1E4;
    --c-mint:#12A594;
    --c-mint-soft:#E6F6F3;
    --c-ink:#0F1B2B;
    --c-ink-2:#3C4A60;
    --c-ink-3:#6B7A90;
    --c-bg:#F7F9FC;
    --c-surface:#FFFFFF;
    --c-line:#E3E9F2;
    --r-sm:10px;
    --r-md:16px;
    --r-lg:24px;
    --sh-sm:0 1px 2px rgba(15,27,43,.06);
    --sh-md:0 6px 20px -8px rgba(15,27,43,.12);
    --sh-lg:0 18px 40px -20px rgba(15,27,43,.22);
    --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font);
    font-size:16px;
    line-height:1.75;
    color:var(--c-ink-2);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--c-brand-500);outline-offset:2px;border-radius:4px;}

  .container{
    width:100% !important;
    max-width:1200px !important;
    margin-left:auto !important;
    margin-right:auto !important;
    padding-left:32px;
    padding-right:32px;
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:999px;
    font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
    border:1px solid transparent;cursor:pointer;
    transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out;
  }
  .btn:hover{transform:translateY(-1px);}
  .btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px -12px rgba(242,129,29,.9);}
  .btn-primary:hover{background:#DE6F10;}
  .btn-brand{background:var(--c-brand-700);color:#fff;}
  .btn-brand:hover{background:var(--c-brand-900);}
  .btn-ghost{background:var(--c-surface);color:var(--c-brand-700);border-color:var(--c-line);}
  .btn-ghost:hover{border-color:var(--c-brand-500);background:var(--c-brand-50);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}

  .link-arrow{
    display:inline-flex;align-items:center;gap:8px;
    color:var(--c-brand-700);font-size:15px;font-weight:600;
    transition:color .18s ease-out;
  }
  .link-arrow svg{width:16px;height:16px;stroke:currentColor;fill:none;transition:transform .18s ease-out;}
  .link-arrow:hover{color:var(--c-brand-900);}
  .link-arrow:hover svg{transform:translateX(3px);}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:5px 12px;border-radius:999px;
    background:var(--c-brand-50);color:var(--c-brand-700);
    font-size:12.5px;font-weight:600;letter-spacing:.08em;
  }
  .badge{
    display:inline-flex;align-items:center;
    padding:4px 10px;border-radius:999px;
    font-size:12.5px;font-weight:600;letter-spacing:.02em;
  }
  .badge-brand{background:var(--c-brand-50);color:var(--c-brand-700);}
  .badge-accent{background:var(--c-accent-soft);color:#B4570A;}
  .badge-mint{background:var(--c-mint-soft);color:#0A7A6E;}
  .badge-line{background:#fff;border:1px solid var(--c-line);color:var(--c-ink-2);}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-bottom:1px solid var(--c-line);
    transition:box-shadow .18s ease-out;
  }
  .site-header.is-stuck{box-shadow:var(--sh-sm);}
  .nav{
    display:flex;align-items:center;justify-content:space-between;gap:24px;
    height:72px;
  }
  .brand{display:inline-flex;align-items:center;gap:10px;}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--c-brand-700);flex:0 0 auto;
  }
  .brand-mark svg{width:20px;height:20px;stroke:#fff;fill:none;}
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:18px;font-weight:700;color:var(--c-brand-900);}
  .brand-sub{font-size:12.5px;font-weight:500;color:var(--c-ink-3);letter-spacing:.04em;}

  .nav-links{display:flex;align-items:center;gap:30px;}
  .nav-links a{
    position:relative;font-size:15px;color:var(--c-ink-2);
    padding:6px 0;transition:color .18s ease-out;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:3px;
    border-radius:3px;background:var(--c-accent);opacity:0;transition:opacity .18s ease-out;
  }
  .nav-links a:hover{color:var(--c-brand-700);}
  .nav-links a.active{color:var(--c-brand-900);font-weight:600;}
  .nav-links a.active::after{opacity:1;}

  .nav-actions{display:flex;align-items:center;gap:12px;}
  .nav-search{position:relative;display:flex;align-items:center;}
  .nav-search svg{
    position:absolute;left:12px;width:17px;height:17px;
    stroke:var(--c-ink-3);fill:none;pointer-events:none;
  }
  .nav-search input{
    width:224px;height:40px;padding:0 14px 0 36px;
    border-radius:999px;border:1px solid var(--c-line);
    background:var(--c-bg);font-size:14px;color:var(--c-ink);
    transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
  }
  .nav-search input::placeholder{color:var(--c-ink-3);}
  .nav-search input:focus{
    outline:none;background:#fff;border-color:var(--c-brand-500);
    box-shadow:0 0 0 4px rgba(42,121,216,.14);
  }
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--c-line);background:#fff;cursor:pointer;
    align-items:center;justify-content:center;
  }
  .nav-toggle svg{width:22px;height:22px;stroke:var(--c-brand-900);fill:none;}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:80;display:none;
    background:rgba(11,42,91,.32);
  }
  .drawer.open{display:block;}
  .drawer-panel{
    position:absolute;top:0;right:0;bottom:0;width:min(360px,88vw);
    background:#fff;display:flex;flex-direction:column;
    box-shadow:var(--sh-lg);padding:20px;
    animation:slideIn .22s ease-out;
  }
  @keyframes slideIn{from{transform:translateX(24px);opacity:.6}to{transform:translateX(0);opacity:1}}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
  .drawer-close{
    width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);
    background:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;
  }
  .drawer-close svg{width:20px;height:20px;stroke:var(--c-brand-900);fill:none;}
  .drawer-nav{display:flex;flex-direction:column;padding:8px 0;flex:1;}
  .drawer-nav a{
    font-size:16px;line-height:52px;color:var(--c-ink-2);
    border-bottom:1px solid var(--c-line);
  }
  .drawer-nav a.active{color:var(--c-brand-900);font-weight:600;}
  .drawer-actions{display:flex;flex-direction:column;gap:12px;padding-top:16px;}

  /* ---------- 页头 ---------- */
  .page-hero{
    background:linear-gradient(135deg,var(--c-bg) 0%,var(--c-brand-50) 100%);
    border-bottom:1px solid var(--c-line);
    padding:56px 0 64px;
  }
  .hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
  .page-hero h1{
    margin-top:16px;
    font-size:clamp(28px,3.6vw,42px);
    font-weight:700;line-height:1.2;letter-spacing:-.01em;
    color:var(--c-brand-900);
  }
  .page-hero .lead{margin-top:16px;font-size:16px;line-height:1.8;color:var(--c-ink-2);max-width:38em;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .trust-list{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:28px;}
  .trust-list li{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--c-ink-3);}
  .trust-list svg{width:16px;height:16px;stroke:var(--c-mint);fill:none;flex:0 0 auto;}

  .hero-side-card{
    background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-lg);box-shadow:var(--sh-md);padding:22px;
  }
  .hero-side-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
  .hero-side-date{font-size:12.5px;color:var(--c-ink-3);}
  .hero-side-list{display:flex;flex-direction:column;gap:12px;}
  .hero-side-list li{
    display:flex;gap:10px;font-size:14px;line-height:1.65;color:var(--c-ink-2);
    padding-bottom:12px;border-bottom:1px dashed var(--c-line);
  }
  .hero-side-list li:last-child{border-bottom:none;padding-bottom:0;}
  .hero-side-list .dot{
    flex:0 0 auto;width:6px;height:6px;border-radius:50%;
    background:var(--c-accent);margin-top:9px;
  }
  .hero-figure{margin-top:18px;border-radius:var(--r-md);overflow:hidden;background:var(--c-brand-50);}
  .hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0;}
  .section-alt{background:var(--c-surface);}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;}
  .section-head h2{
    margin-top:14px;font-size:clamp(24px,2.6vw,34px);
    font-weight:600;line-height:1.3;color:var(--c-ink);letter-spacing:-.005em;
  }
  .section-head p{margin-top:12px;font-size:15.5px;color:var(--c-ink-3);max-width:42em;}

  .card{
    background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-md);box-shadow:var(--sh-md);
    transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  }
  .card:hover{
    transform:translateY(-3px);
    box-shadow:var(--sh-lg);
    border-color:rgba(42,121,216,.3);
  }

  .feature-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch;}
  .card-feature{overflow:hidden;display:flex;flex-direction:column;}
  .card-feature img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .card-body{padding:24px 26px 26px;}
  .card-body h3{font-size:20px;font-weight:600;color:var(--c-ink);line-height:1.4;}
  .card-body p{margin-top:10px;font-size:14.5px;color:var(--c-ink-3);line-height:1.75;}
  .card-body .link-arrow{margin-top:16px;font-size:14.5px;}

  .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .mini-card{padding:24px;display:flex;flex-direction:column;gap:12px;}
  .mini-icon{
    width:48px;height:48px;border-radius:14px;
    display:flex;align-items:center;justify-content:center;
    background:var(--c-brand-50);
  }
  .mini-icon.mint{background:var(--c-mint-soft);}
  .mini-icon.accent{background:var(--c-accent-soft);}
  .mini-icon svg{width:24px;height:24px;stroke:var(--c-brand-700);fill:none;}
  .mini-icon.mint svg{stroke:#0A7A6E;}
  .mini-icon.accent svg{stroke:#B4570A;}
  .mini-card h3{font-size:17.5px;font-weight:600;color:var(--c-ink);line-height:1.4;}
  .mini-card p{font-size:14px;color:var(--c-ink-3);line-height:1.7;}

  /* ---------- 步骤 ---------- */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
  .steps::before{
    content:"";position:absolute;top:22px;left:8%;right:8%;height:0;
    border-top:1px dashed var(--c-line);
  }
  .step{position:relative;text-align:left;}
  .step-num{
    width:44px;height:44px;border-radius:50%;
    background:var(--c-brand-700);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:17px;font-weight:700;
    box-shadow:0 0 0 6px var(--c-brand-50);
    position:relative;z-index:1;
  }
  .step-card{
    margin-top:20px;background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-md);box-shadow:var(--sh-sm);padding:22px 24px;
    transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .step-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:rgba(42,121,216,.3);}
  .step-card h3{font-size:18px;font-weight:600;color:var(--c-ink);}
  .step-card p{margin-top:8px;font-size:14px;color:var(--c-ink-3);line-height:1.72;}

  /* ---------- 图文交错 ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
  .split + .split{margin-top:64px;}
  .split-media{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-md);background:var(--c-brand-50);}
  .split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease-out;}
  .split-media:hover img{transform:scale(1.02);}
  .split-copy h3{margin-top:14px;font-size:24px;font-weight:600;line-height:1.35;color:var(--c-ink);}
  .split-copy p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--c-ink-2);}
  .split-copy .link-arrow{margin-top:18px;}

  /* ---------- 数据条 ---------- */
  .stats-band{
    background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:var(--r-lg);box-shadow:var(--sh-sm);
    padding:36px 28px;
    display:grid;grid-template-columns:repeat(4,1fr);
  }
  .stat{padding:0 24px;text-align:left;border-left:1px solid var(--c-line);}
  .stat:first-child{border-left:none;padding-left:0;}
  .stat strong{
    display:block;font-size:38px;font-weight:700;line-height:1.1;
    color:var(--c-brand-700);letter-spacing:-.02em;
  }
  .stat span{display:block;margin-top:8px;font-size:14px;color:var(--c-ink-3);}

  /* ---------- FAQ ---------- */
  .faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
  .faq-intro h2{margin-top:14px;font-size:clamp(24px,2.6vw,32px);font-weight:600;line-height:1.3;color:var(--c-ink);}
  .faq-intro p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--c-ink-3);}
  .faq-intro .btn{margin-top:24px;}
  .faq-list{display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:var(--c-surface);border:1px solid var(--c-line);
    border-radius:12px;transition:border-color .18s ease-out,box-shadow .18s ease-out;
    overflow:hidden;
  }
  .faq-item.is-open{border-color:rgba(42,121,216,.3);box-shadow:var(--sh-sm);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;background:transparent;border:0;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--c-ink);text-align:left;line-height:1.5;
  }
  .faq-q:hover{color:var(--c-brand-700);}
  .faq-q svg{
    width:20px;height:20px;flex:0 0 auto;stroke:var(--c-brand-700);fill:none;
    transition:transform .2s ease-out;
  }
  .faq-item.is-open .faq-q svg{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease-out;}
  .faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}

  /* ---------- CTA ---------- */
  .cta-band{
    background:linear-gradient(120deg,var(--c-brand-50),#fff 70%);
    border:1px solid var(--c-line);border-radius:var(--r-lg);
    padding:44px 48px;
    display:flex;align-items:center;justify-content:space-between;gap:32px;
  }
  .cta-band h2{font-size:clamp(22px,2.2vw,28px);font-weight:600;color:var(--c-brand-900);line-height:1.35;}
  .cta-band p{margin-top:10px;font-size:15px;color:var(--c-ink-2);max-width:40em;}
  .cta-band-actions{display:flex;gap:12px;flex-wrap:wrap;flex:0 0 auto;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-brand-900);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:96px;}
  .footer-grid{display:grid;grid-template-columns:4fr 2.6fr 2.6fr 2.6fr;gap:40px;}
  .footer-brand p{margin-top:18px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.72);max-width:32em;}
  .site-footer .brand-name{color:#fff;}
  .site-footer .brand-sub{color:rgba(255,255,255,.6);}
  .site-footer .brand-mark{background:rgba(255,255,255,.12);}
  .site-footer .brand-mark svg{stroke:#fff;}
  .socials{display:flex;gap:12px;margin-top:22px;}
  .socials a{
    width:38px;height:38px;border-radius:10px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.08);transition:background-color .18s ease-out,transform .18s ease-out;
  }
  .socials a:hover{background:rgba(255,255,255,.18);transform:translateY(-1px);}
  .socials svg{width:19px;height:19px;stroke:#fff;fill:none;}
  .footer-col h4{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;}
  .footer-col ul{display:flex;flex-direction:column;gap:2px;}
  .footer-col a{font-size:14px;line-height:2.2;color:rgba(255,255,255,.72);transition:color .18s ease-out;}
  .footer-col a:hover{color:#fff;}
  .footer-bottom{
    margin-top:48px;padding:20px 0 28px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:13px;color:rgba(255,255,255,.55);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .container{padding-left:24px;padding-right:24px;}
    .nav-links{display:none;}
    .nav-search{display:none;}
    .nav-toggle{display:flex;}
    .hero-grid{grid-template-columns:1fr;gap:32px;}
    .feature-grid{grid-template-columns:1fr;}
    .split{grid-template-columns:1fr;gap:28px;}
    .split.reverse .split-copy{order:2;}
    .split.reverse .split-media{order:1;}
    .faq-layout{grid-template-columns:1fr;gap:32px;}
    .steps{grid-template-columns:1fr;gap:20px;}
    .steps::before{display:none;}
    .stats-band{grid-template-columns:1fr 1fr;gap:28px 0;}
    .stat:nth-child(3){border-left:none;padding-left:0;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
    .section{padding:72px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:36px;}
    .site-footer{margin-top:72px;}
  }
  @media (max-width:768px){
    .mini-grid{grid-template-columns:1fr;}
    .stats-band{grid-template-columns:1fr;}
    .stat{border-left:none;padding-left:0;border-top:1px solid var(--c-line);padding-top:20px;}
    .stat:first-child{border-top:none;padding-top:0;}
    .page-hero{padding:40px 0 48px;}
  }
  @media (max-width:520px){
    .container{padding-left:20px;padding-right:20px;}
    .nav{height:64px;gap:12px;}
    .brand-name{font-size:16px;}
    .brand-sub{font-size:11.5px;}
    .page-hero h1{font-size:26px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
    .section{padding:52px 0;}
    .card-body,.mini-card,.step-card{padding:20px;}
    .stats-band{padding:24px 20px;}
    .faq-q{font-size:15px;padding:16px 18px;}
    .faq-a-inner{padding:0 18px 18px;}
    .cta-band{padding:28px 22px;}
    .cta-band-actions{width:100%;}
    .cta-band-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *{transition:none !important;animation:none !important;}
  }