/* roulang page: index */
:root{
    --ink-900:#0C1310;
    --ink-700:#26332C;
    --ink-500:#5C6B63;
    --brand-600:#17803D;
    --brand-500:#1FA85A;
    --lime-400:#CDF24F;
    --accent-500:#FF6A2B;
    --bg:#F5F7F3;
    --surface:#FFFFFF;
    --line:#E2E7DF;
    --error:#D92D20;
    --radius-card:16px;
    --radius-btn:12px;
    --radius-input:10px;
    --shadow-1:0 1px 2px rgba(12,19,16,.06), 0 10px 28px -14px rgba(12,19,16,.14);
    --shadow-2:0 2px 6px rgba(12,19,16,.08), 0 20px 44px -22px rgba(12,19,16,.28);
    --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
    --font-num:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink-700);
    font-family:var(--font-cn);
    font-size:16.5px;
    line-height:1.85;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
  p{margin:0 0 1.15em;}
  p:last-child{margin-bottom:0;}
  ul{margin:0;padding:0;list-style:none;}
  .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

  /* ---------- 容器 ---------- */
  .wrap{max-width:1240px;margin:0 auto;padding:0 20px;width:100%;}
  @media (min-width:768px){ .wrap{padding:0 32px;} }

  /* ---------- 通用排版 ---------- */
  .h1{font-size:clamp(30px,4.6vw,52px);line-height:1.2;font-weight:700;letter-spacing:-.01em;}
  .h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;}
  .h3{font-size:20px;line-height:1.45;font-weight:600;}
  .lead{font-size:17px;line-height:1.8;color:var(--ink-500);max-width:64ch;}
  .muted{color:var(--ink-500);}
  .kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.14em;font-weight:600;
    color:var(--brand-600);margin-bottom:14px;
  }
  .kicker::before{
    content:"";width:6px;height:6px;border-radius:2px;
    background:var(--lime-400);box-shadow:0 0 0 3px rgba(205,242,79,.3);
  }
  .kicker.on-dark{color:var(--lime-400);}
  .kicker.on-dark::before{box-shadow:0 0 0 3px rgba(205,242,79,.16);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:var(--radius-btn);
    font-size:15.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .16s ease,background-color .16s ease,border-color .16s ease,box-shadow .16s ease,filter .16s ease;
    white-space:nowrap;
  }
  .btn i{font-size:14px;}
  .btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px -16px rgba(23,128,61,.9);}
  .btn-primary:hover{background:var(--brand-500);transform:translateY(-2px);box-shadow:0 16px 28px -16px rgba(23,128,61,.85);}
  .btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900);}
  .btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px);}
  .btn-lime{background:var(--lime-400);color:var(--ink-900);}
  .btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 28px -18px rgba(205,242,79,.9);}
  .btn-outline-light{background:transparent;border-color:rgba(255,255,255,.34);color:#fff;}
  .btn-outline-light:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px);}
  .btn:active{transform:translateY(0);}
  .btn:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;}
  .btn-lime:focus-visible,.btn-outline-light:focus-visible{outline-color:var(--lime-400);}
  .btn:disabled{opacity:.45;cursor:not-allowed;transform:none;}
  .link-more{
    font-size:14.5px;font-weight:600;color:var(--brand-600);
    display:inline-flex;align-items:center;gap:6px;padding:6px 0;
    border-bottom:1px solid transparent;transition:border-color .16s,color .16s;
  }
  .link-more:hover{border-color:var(--brand-500);}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    font-size:12px;line-height:1.6;letter-spacing:.04em;font-weight:600;
    padding:4px 10px;border-radius:999px;
    background:rgba(31,168,90,.1);color:var(--brand-600);
    border:1px solid rgba(31,168,90,.2);
  }
  .badge.on-dark{background:rgba(205,242,79,.12);color:var(--lime-400);border-color:rgba(205,242,79,.24);}
  .tagline{display:flex;flex-wrap:wrap;gap:10px;}
  .tag{
    font-size:13px;color:var(--ink-500);background:var(--surface);
    border:1px solid var(--line);border-radius:999px;padding:6px 14px;
  }

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(245,247,243,.86);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .2s ease;
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(12,19,16,.45);}
  .nav-inner{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;background:var(--ink-900);
    color:var(--lime-400);display:grid;place-items:center;
    font-weight:700;font-size:14px;letter-spacing:.02em;flex-shrink:0;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
  .brand-sub{font-size:12px;color:var(--ink-500);letter-spacing:.06em;margin-top:2px;}
  .nav-links{display:flex;align-items:center;gap:28px;}
  .nav-link{
    position:relative;font-size:16px;color:var(--ink-700);
    padding:6px 0;transition:color .16s ease;white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--lime-400);transform:scaleX(0);transform-origin:left;
    transition:transform .16s ease;
  }
  .nav-link:hover{color:var(--ink-900);}
  .nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
  .nav-link.active{color:var(--ink-900);font-weight:600;}
  .nav-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
  .search{
    display:flex;align-items:center;gap:8px;height:40px;width:250px;
    padding:0 10px 0 12px;border:1px solid var(--line);border-radius:var(--radius-input);
    background:var(--surface);transition:border-color .16s,box-shadow .16s;
  }
  .search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,168,90,.16);}
  .search i{color:var(--ink-500);font-size:14px;}
  .search input{border:0;outline:0;background:transparent;flex:1;min-width:0;font-size:14.5px;}
  .search input::placeholder{color:#9AA79F;}
  .kbd{
    font-family:var(--font-num);font-size:11px;color:var(--ink-500);
    border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--bg);
    flex-shrink:0;
  }
  .nav-cta{height:40px;padding:0 18px;font-size:14.5px;}
  .burger{
    display:none;width:42px;height:42px;border-radius:10px;
    border:1px solid var(--line);background:var(--surface);color:var(--ink-900);
    align-items:center;justify-content:center;cursor:pointer;
  }
  .burger:hover{border-color:var(--brand-500);color:var(--brand-600);}

  /* ---------- 抽屉 ---------- */
  .drawer{position:fixed;inset:0;z-index:90;pointer-events:none;}
  .drawer-mask{
    position:absolute;inset:0;background:rgba(12,19,16,.5);
    opacity:0;transition:opacity .26s ease;
  }
  .drawer-panel{
    position:absolute;top:0;right:0;bottom:0;width:min(86vw,360px);
    background:var(--surface);padding:22px;overflow-y:auto;
    transform:translateX(100%);transition:transform .26s ease;
    box-shadow:-24px 0 48px -24px rgba(12,19,16,.5);
    display:flex;flex-direction:column;gap:18px;
  }
  .drawer.open{pointer-events:auto;}
  .drawer.open .drawer-mask{opacity:1;}
  .drawer.open .drawer-panel{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .drawer-close{
    width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
    background:transparent;cursor:pointer;color:var(--ink-700);
  }
  .drawer-close:hover{color:var(--brand-600);border-color:var(--brand-500);}
  .drawer-nav{display:flex;flex-direction:column;}
  .drawer-nav a{
    padding:14px 2px;border-bottom:1px solid var(--line);
    font-size:16px;color:var(--ink-700);display:flex;align-items:center;justify-content:space-between;
  }
  .drawer-nav a:hover,.drawer-nav a.active{color:var(--brand-600);font-weight:600;}
  .drawer-nav a i{font-size:12px;color:var(--ink-500);}
  .drawer-search{
    display:flex;align-items:center;gap:8px;height:46px;padding:0 12px;
    border:1px solid var(--line);border-radius:var(--radius-input);background:var(--bg);
  }
  .drawer-search input{border:0;outline:0;background:transparent;flex:1;font-size:15px;}
  .drawer-foot{font-size:13px;color:var(--ink-500);border-top:1px solid var(--line);padding-top:16px;}
  body.no-scroll{overflow:hidden;}

  /* ---------- Hero ---------- */
  .hero{padding:52px 0 66px;position:relative;}
  .hero::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--line);
  }
  .hero-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
  .hero-copy h1{margin-bottom:18px;}
  .hero-sub{font-size:17.5px;line-height:1.8;color:var(--ink-500);max-width:56ch;margin-bottom:26px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px;}
  .hero-visual{
    border-radius:20px;overflow:hidden;border:1px solid var(--line);
    background:var(--surface);box-shadow:var(--shadow-2);
  }
  .hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11;}

  /* ---------- 深色区块 ---------- */
  .dark-block{background:var(--ink-900);color:rgba(255,255,255,.78);}
  .dark-block h2,.dark-block h3{color:#fff;}
  .section{padding:64px 0;}
  @media (min-width:768px){ .section{padding:96px 0;} }
  .sec-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
    gap:20px;margin-bottom:40px;
  }
  .sec-head .lead{max-width:60ch;margin-top:12px;}

  /* ---------- 指标看板 ---------- */
  .board{padding:72px 0;}
  @media (min-width:768px){ .board{padding:104px 0;} }
  .board-lead{max-width:60ch;color:rgba(255,255,255,.66);margin-top:14px;font-size:16.5px;}
  .board-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:44px 0 34px;
  }
  .board-item{
    border:1px solid rgba(205,242,79,.18);border-radius:var(--radius-card);
    padding:24px 22px;background:rgba(255,255,255,.03);
    transition:border-color .2s ease,transform .2s ease,background-color .2s ease;
  }
  .board-item:hover{border-color:rgba(205,242,79,.42);transform:translateY(-3px);background:rgba(255,255,255,.05);}
  .board-num{
    font-family:var(--font-num);font-variant-numeric:tabular-nums;
    font-size:clamp(38px,4.4vw,54px);line-height:1;font-weight:700;color:var(--lime-400);
    display:flex;align-items:baseline;gap:5px;
  }
  .board-num span{font-size:14px;color:rgba(255,255,255,.55);font-weight:500;}
  .board-label{margin-top:14px;font-size:15.5px;font-weight:600;color:#fff;}
  .board-note{margin-top:8px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.55);}
  .compare-bar{
    display:grid;grid-template-columns:1fr 1fr;gap:2px;
    border-radius:12px;overflow:hidden;border:1px solid rgba(205,242,79,.18);
  }
  .compare-bar > div{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:16px 20px;font-size:14.5px;
  }
  .compare-bar .left{background:rgba(205,242,79,.12);color:#fff;}
  .compare-bar .right{background:rgba(255,255,255,.04);color:rgba(255,255,255,.7);}
  .compare-bar b{font-family:var(--font-num);font-size:16px;color:var(--lime-400);}
  .compare-bar .right b{color:rgba(255,255,255,.6);}

  /* ---------- 服务矩阵 ---------- */
  .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
  .matrix > *:nth-child(1){grid-column:span 2;grid-row:span 2;}
  .matrix > *:nth-child(2){grid-column:span 2;}
  .matrix > *:nth-child(3),
  .matrix > *:nth-child(4){grid-column:span 1;}
  .matrix > *:nth-child(5),
  .matrix > *:nth-child(6){grid-column:span 2;}
  .m-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:26px 24px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:14px;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .m-card:hover{transform:translateY(-3px);border-color:rgba(31,168,90,.35);box-shadow:var(--shadow-2);}
  .m-card:hover .m-title{color:var(--brand-600);}
  .m-index{
    font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.06em;
    color:var(--brand-600);border:1px solid rgba(31,168,90,.24);border-radius:8px;
    padding:2px 9px;align-self:flex-start;background:rgba(31,168,90,.06);
  }
  .m-title{font-size:19px;line-height:1.45;font-weight:600;color:var(--ink-900);transition:color .2s ease;}
  .m-desc{font-size:15px;line-height:1.8;color:var(--ink-500);}
  .m-points{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
  .m-points li{position:relative;padding-left:16px;font-size:14.5px;color:var(--ink-700);line-height:1.7;}
  .m-points li::before{
    content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:1px;background:var(--lime-400);
  }
  .m-thumb{border-radius:12px;overflow:hidden;border:1px solid var(--line);margin-top:auto;}
  .m-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;}
  .m-card.lg .m-title{font-size:22px;}
  .m-card.lg .m-desc{font-size:15.5px;}

  /* ---------- 最新信息 ---------- */
  .news-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
  .news-card{
    background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;display:flex;flex-direction:column;gap:12px;
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .news-card:hover{transform:translateY(-3px);border-color:rgba(31,168,90,.35);box-shadow:var(--shadow-1);}
  .news-lead{grid-column:span 2;flex-direction:row;gap:24px;align-items:stretch;}
  .news-lead .news-thumb{flex:0 0 42%;border-radius:12px;overflow:hidden;border:1px solid var(--line);}
  .news-lead .news-thumb img{width:100%;height:100%;object-fit:cover;min-height:200px;}
  .news-lead .news-body{flex:1;display:flex;flex-direction:column;gap:12px;justify-content:center;}
  .news-title{font-size:18px;line-height:1.5;font-weight:600;}
  .news-title a{transition:color .16s ease;}
  .news-card:hover .news-title a{color:var(--brand-600);}
  .news-sum{
    font-size:14.5px;line-height:1.8;color:var(--ink-500);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-meta{font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
  .news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-500);opacity:.6;}
  .empty-state{
    border:1px dashed var(--line);border-radius:var(--radius-card);
    padding:44px 24px;text-align:center;background:var(--bg);
    display:flex;flex-direction:column;align-items:center;gap:16px;
  }
  .empty-state p{font-size:14px;color:var(--ink-500);margin:0;}

  /* ---------- 结果对比 ---------- */
  .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid rgba(205,242,79,.16);border-radius:var(--radius-card);overflow:hidden;}
  .compare-col{padding:28px 26px;}
  .compare-col + .compare-col{border-left:1px dashed rgba(205,242,79,.28);}
  .compare-col h3{font-size:18px;margin-bottom:22px;display:flex;align-items:center;gap:10px;}
  .compare-col h3 .mk{width:8px;height:8px;border-radius:2px;background:var(--lime-400);}
  .compare-col.dim h3 .mk{background:rgba(255,255,255,.35);}
  .c-row{display:grid;grid-template-columns:96px 1fr 54px;align-items:center;gap:12px;margin-bottom:16px;font-size:14px;}
  .c-row .lbl{color:rgba(255,255,255,.66);}
  .c-row .bar{height:8px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;}
  .c-row .bar i{display:block;height:100%;border-radius:999px;background:var(--lime-400);}
  .compare-col.dim .c-row .bar i{background:rgba(255,255,255,.3);}
  .c-row b{font-family:var(--font-num);font-size:13.5px;color:var(--lime-400);text-align:right;}
  .compare-col.dim .c-row b{color:rgba(255,255,255,.6);}
  .compare-note{margin-top:26px;font-size:14px;color:rgba(255,255,255,.6);max-width:76ch;}

  /* ---------- FAQ ---------- */
  .faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
    gap:18px;padding:20px 0;font-size:17px;font-weight:600;color:var(--ink-900);
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";font-family:var(--font-num);font-size:20px;line-height:1;
    color:var(--brand-500);flex-shrink:0;transition:transform .2s ease;
  }
  .faq-item[open] summary{color:var(--brand-600);}
  .faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
  .faq-item .faq-body{padding:0 0 22px;font-size:15.5px;line-height:1.8;color:var(--ink-500);max-width:72ch;}
  .faq-item summary:focus-visible{outline:2px solid var(--brand-500);outline-offset:3px;border-radius:6px;}

  /* ---------- 表单 CTA ---------- */
  .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
  .cta-points{display:flex;flex-direction:column;gap:16px;margin-top:24px;}
  .cta-points li{display:flex;gap:12px;font-size:15px;color:var(--ink-500);line-height:1.75;}
  .cta-points li i{color:var(--brand-500);margin-top:7px;font-size:13px;}
  .form-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:28px;box-shadow:var(--shadow-1);
  }
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
  .field input,.field select,.field textarea{
    width:100%;height:48px;padding:0 14px;border:1px solid var(--line);
    border-radius:var(--radius-input);background:var(--bg);color:var(--ink-700);
    outline:none;transition:border-color .16s,box-shadow .16s,background-color .16s;
  }
  .field textarea{height:auto;min-height:110px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:var(--brand-600);background:var(--surface);
    box-shadow:0 0 0 3px rgba(31,168,90,.16);
  }
  .field input::placeholder,.field textarea::placeholder{color:#9AA79F;}
  .field.error input,.field.error select{border-color:var(--error);}
  .field .err-msg{display:none;font-size:13px;color:var(--error);margin-top:6px;}
  .field.error .err-msg{display:block;}
  .form-note{font-size:12px;color:var(--ink-500);margin-top:14px;line-height:1.6;}
  .form-card .btn{width:100%;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink-900);color:rgba(255,255,255,.66);padding:64px 0 0;}
  .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
  .foot-title{
    font-size:14px;font-weight:600;color:var(--lime-400);letter-spacing:.06em;margin-bottom:18px;
  }
  .foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .foot-brand .brand-mark{background:rgba(205,242,79,.14);color:var(--lime-400);}
  .foot-brand .brand-name{color:#fff;}
  .foot-brand .brand-sub{color:rgba(255,255,255,.5);}
  .foot-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:36ch;}
  .foot-links{display:flex;flex-direction:column;gap:12px;}
  .foot-links a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .16s,padding-left .16s;}
  .foot-links a:hover{color:var(--lime-400);padding-left:4px;}
  .foot-info{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);}
  .foot-bottom{
    margin-top:52px;border-top:1px solid rgba(205,242,79,.16);
    padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;
    justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.5);
  }
  .to-top{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;
    color:rgba(255,255,255,.7);border:1px solid rgba(255,255,255,.2);
    border-radius:999px;padding:7px 16px;background:transparent;cursor:pointer;
    transition:border-color .16s,color .16s,transform .16s;
  }
  .to-top:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1180px){
    .search{width:200px;}
    .nav-links{gap:20px;}
    .nav-link{font-size:15px;}
  }
  @media (max-width:1023px){
    .nav-links,.search,.nav-cta{display:none;}
    .burger{display:inline-flex;}
    .hero-inner{grid-template-columns:1fr;gap:34px;}
    .hero-visual img{aspect-ratio:16/9;}
    .board-grid{grid-template-columns:repeat(2,1fr);}
    .matrix{grid-template-columns:repeat(2,1fr);}
    .matrix > *:nth-child(1){grid-column:span 2;grid-row:auto;}
    .matrix > *:nth-child(2){grid-column:span 2;}
    .matrix > *:nth-child(3),
    .matrix > *:nth-child(4){grid-column:span 1;}
    .matrix > *:nth-child(5),
    .matrix > *:nth-child(6){grid-column:span 2;}
    .news-grid{grid-template-columns:1fr;}
    .news-lead{grid-column:span 1;flex-direction:column;}
    .news-lead .news-thumb{flex:none;}
    .news-lead .news-thumb img{min-height:0;aspect-ratio:16/9;}
    .cta-grid{grid-template-columns:1fr;gap:32px;}
    .foot-grid{grid-template-columns:1fr 1fr;gap:30px;}
  }
  @media (max-width:767px){
    body{font-size:16px;}
    .section{padding:56px 0;}
    .board{padding:60px 0;}
    .compare-grid{grid-template-columns:1fr;}
    .compare-col + .compare-col{border-left:0;border-top:1px dashed rgba(205,242,79,.28);}
    .compare-bar{grid-template-columns:1fr;}
    .matrix{grid-template-columns:1fr;gap:18px;}
    .matrix > *{grid-column:span 1 !important;}
    .c-row{grid-template-columns:80px 1fr 48px;font-size:13.5px;}
    .hero{padding:36px 0 52px;}
    .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  }
  @media (max-width:520px){
    .wrap{padding:0 16px;}
    .board-grid{grid-template-columns:1fr;gap:16px;}
    .foot-grid{grid-template-columns:1fr;}
    .brand-sub{display:none;}
    .sec-head{margin-bottom:28px;}
    .form-card{padding:22px;}
    .compare-col{padding:22px 18px;}
  }

/* roulang page: category1 */
:root{
  --ink-900:#0C1310;
  --ink-800:#111A15;
  --ink-700:#26332C;
  --ink-500:#5C6B63;
  --brand-600:#17803D;
  --brand-500:#1FA85A;
  --lime-400:#CDF24F;
  --accent-500:#FF6A2B;
  --bg:#F5F7F3;
  --surface:#FFFFFF;
  --line:#E2E7DF;
  --error:#D92D20;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-1:0 1px 2px rgba(12,19,16,.06),0 10px 28px -14px rgba(12,19,16,.14);
  --shadow-2:0 14px 34px -18px rgba(12,19,16,.34);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 32px}}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ============ header / nav ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(245,247,243,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(12,19,16,.4)}
.nav-inner{display:flex;align-items:center;gap:16px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:11px;
  background:var(--ink-900);color:var(--lime-400);
  font-size:14px;font-weight:700;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:.01em}
.brand-sub{font-size:12px;color:var(--ink-500);letter-spacing:.02em}
.nav-links{display:none;align-items:center;gap:20px;margin-left:auto}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;color:var(--ink-700);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--lime-400);transform:scaleX(0);transform-origin:left;
  transition:transform .16s ease;
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink-900);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search{
  display:none;align-items:center;gap:8px;
  height:40px;width:262px;padding:0 12px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-input);
  transition:border-color .18s ease,box-shadow .18s ease;
}
.search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(23,128,61,.14)}
.search i{font-size:13px;color:var(--ink-500)}
.search input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-family:inherit;font-size:14px;color:var(--ink-900);
}
.search input::placeholder{color:#98A69D}
.kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--ink-500);
  border:1px solid var(--line);border-radius:999px;padding:2px 7px;white-space:nowrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-family:inherit;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease,filter .16s ease;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--brand-600);color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px)}
.btn-lime{background:var(--lime-400);color:var(--ink-900)}
.btn-lime:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(205,242,79,.5);color:var(--ink-900)}
.btn:active{transform:none;box-shadow:none}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.nav-cta{display:none;height:42px;padding:0 18px;font-size:14.5px}
.burger{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--surface);color:var(--ink-900);cursor:pointer;font-size:16px;
  transition:border-color .16s ease,color .16s ease;
}
.burger:hover{border-color:var(--brand-500);color:var(--brand-600)}
@media (min-width:1024px){
  .nav-links{display:flex}
  .burger{display:none}
  .nav-cta{display:inline-flex}
}
@media (min-width:1100px){.search{display:flex}}
@media (min-width:1200px){.nav-links{gap:28px}}

/* ============ drawer ============ */
.drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:min(86vw,340px);height:100%;padding:20px;
  background:var(--surface);overflow-y:auto;
  transform:translateX(102%);
  transition:transform .28s ease;
  box-shadow:-20px 0 44px -26px rgba(12,19,16,.5);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-head span{font-size:14px;font-weight:600;color:var(--ink-900)}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--line);border-radius:10px;
  background:transparent;color:var(--ink-700);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;margin:12px 0 20px}
.drawer-nav a{
  display:block;padding:13px 2px;font-size:15.5px;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-600);font-weight:600}
.drawer-search{display:flex;width:100%}
.drawer-tip{margin-top:18px;font-size:13px;color:var(--ink-500);line-height:1.7}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(12,19,16,.46);
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}
@media (min-width:1024px){.drawer,.drawer-mask{display:none}}

/* ============ hero ============ */
.hero{padding:52px 0 56px}
.hero-grid{display:grid;grid-template-columns:1fr;gap:34px}
.hero-copy{max-width:76ch}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-500);font-weight:600;
}
.kicker::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--lime-400)}
.kicker-lime{color:rgba(232,237,230,.66)}
.hero h1{
  margin-top:14px;
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.2;font-weight:700;color:var(--ink-900);
  letter-spacing:-.01em;
}
.lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--ink-500);max-width:60ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin-top:24px}
.tag-row li{
  font-size:12.5px;color:var(--ink-700);
  border:1px solid var(--line);background:var(--surface);
  border-radius:999px;padding:6px 14px;
}
.hero-media{margin:0}
.hero-media img{
  width:100%;border-radius:20px;border:1px solid var(--line);
  box-shadow:var(--shadow-1);object-fit:cover;aspect-ratio:16/11;
}
@media (min-width:1024px){
  .hero{padding:72px 0 84px}
  .hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center}
  .hero-media img{aspect-ratio:5/4}
}

/* ============ sections ============ */
.section{padding:64px 0}
@media (min-width:768px){.section{padding:96px 0}}
.section-dark{background:var(--ink-900);color:rgba(232,237,230,.78)}
.section-dark .sec-title{color:#fff}
.section-dark .sec-sub,.section-dark .sec-text{color:rgba(232,237,230,.72)}
.sec-head{max-width:76ch}
.sec-head.center{margin:0 auto;text-align:center}
.sec-title{
  margin-top:12px;
  font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--ink-900);
}
.sec-sub{margin-top:14px;font-size:16.5px;color:var(--ink-500);max-width:76ch}
.sec-text{margin-top:16px;color:var(--ink-500);max-width:76ch}
.section-dark .sec-text{color:rgba(232,237,230,.74)}

.dot-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:20px}
.dot-list li{position:relative;padding-left:18px;font-size:15.5px;line-height:1.75;color:var(--ink-500)}
.dot-list li::before{
  content:"";position:absolute;left:0;top:.66em;
  width:6px;height:6px;border-radius:2px;background:var(--brand-500);
}
.section-dark .dot-list li{color:rgba(232,237,230,.76)}
.section-dark .dot-list li::before{background:var(--lime-400)}

/* ============ metric block ============ */
.split-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:start}
@media (min-width:1024px){.split-grid{grid-template-columns:1fr 1fr;gap:56px}}
.metric-card{
  background:var(--ink-800);
  border:1px solid rgba(205,242,79,.16);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:0 20px 46px -30px rgba(0,0,0,.75);
}
.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.metric-item{border-left:2px solid rgba(205,242,79,.28);padding-left:14px}
.metric-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,40px);line-height:1.1;
  color:var(--lime-400);font-weight:600;
}
.metric-unit{font-size:13px;color:rgba(232,237,230,.6);margin-left:4px;font-family:var(--font-sans)}
.metric-label{margin-top:6px;font-size:13.5px;color:rgba(232,237,230,.72);line-height:1.6}
.progress-block{margin-top:26px;padding-top:22px;border-top:1px solid rgba(232,237,230,.14)}
.progress-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:14px;color:rgba(232,237,230,.8)}
.progress-head b{font-family:var(--font-mono);font-size:18px;color:var(--lime-400);font-weight:600}
.progress-track{margin-top:12px;height:8px;border-radius:999px;background:rgba(232,237,230,.14);overflow:hidden}
.progress-fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand-500),var(--lime-400))}
.progress-note{margin-top:10px;font-size:12.5px;color:rgba(232,237,230,.5)}

/* ============ wide cards ============ */
.wide-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:40px}
@media (min-width:1024px){.wide-grid{grid-template-columns:1fr 1fr}}
.wide-card{
  display:grid;grid-template-columns:1fr;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-1);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
@media (min-width:640px){.wide-card{grid-template-columns:210px 1fr}}
.wide-card:hover{transform:translateY(-3px);border-color:rgba(31,168,90,.32);box-shadow:var(--shadow-2)}
.wide-media{overflow:hidden;background:#EDF1EA}
.wide-media img{width:100%;height:100%;min-height:170px;object-fit:cover;aspect-ratio:16/9}
.wide-body{padding:20px 22px 24px}
.badge{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;
  color:var(--brand-600);background:rgba(31,168,90,.1);
  border-radius:999px;padding:5px 12px;
}
.wide-body h3{margin-top:12px;font-size:20px;font-weight:600;line-height:1.45;color:var(--ink-900)}
.wide-body p{margin-top:10px;font-size:15.5px;color:var(--ink-500);line-height:1.8}
.wide-body .dot-list{margin-top:14px;gap:8px}
.wide-body .dot-list li{font-size:14.8px}

/* ============ checklist ============ */
.step-grid{display:grid;grid-template-columns:1fr;gap:18px;margin-top:40px}
@media (min-width:768px){.step-grid{grid-template-columns:1fr 1fr}}
.step-item{
  display:flex;gap:16px;padding:20px 22px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.step-item:hover{transform:translateY(-3px);border-color:rgba(31,168,90,.32);box-shadow:var(--shadow-1)}
.step-no{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;letter-spacing:.06em;
  color:var(--brand-500);padding-top:4px;flex-shrink:0;
}
.step-item h3{font-size:18px;font-weight:600;color:var(--ink-900);line-height:1.5}
.step-item p{margin-top:8px;font-size:15px;color:var(--ink-500);line-height:1.78}

/* ============ faq ============ */
.faq-section{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq{max-width:860px;margin:36px auto 0;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:17px;font-weight:600;line-height:1.65;
  color:var(--ink-900);cursor:pointer;list-style:none;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{margin-top:7px;font-size:13px;color:var(--brand-500);transition:transform .2s ease}
.faq-item[open] summary{color:var(--brand-600)}
.faq-item[open] summary i{transform:rotate(180deg)}
.faq-body{padding:0 0 20px;font-size:15.5px;line-height:1.85;color:var(--ink-500);max-width:72ch}

/* ============ cta / form ============ */
.cta-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:start}
@media (min-width:1024px){.cta-grid{grid-template-columns:6fr 6fr;gap:56px}}
.cta-form{
  background:var(--ink-800);
  border:1px solid rgba(205,242,79,.16);
  border-radius:var(--radius-card);
  padding:24px;
}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:14px;font-weight:600;color:rgba(232,237,230,.86)}
.field input,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  background:#0C1310;color:#fff;
  border:1px solid rgba(232,237,230,.2);border-radius:var(--radius-input);
  font-family:inherit;font-size:15px;line-height:1.6;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{min-height:116px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(232,237,230,.38)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--lime-400);box-shadow:0 0 0 3px rgba(205,242,79,.18)}
.field input:user-invalid,.field textarea:user-invalid{border-color:var(--error)}
.form-note{margin-top:12px;font-size:12px;color:rgba(232,237,230,.52);line-height:1.7}

/* ============ footer ============ */
.site-footer{background:var(--ink-900);color:rgba(232,237,230,.75);padding:56px 0 24px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.foot-grid{grid-template-columns:1.9fr 1fr 1fr 1.4fr;gap:28px}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-footer .brand-mark{background:var(--lime-400);color:var(--ink-900)}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(232,237,230,.58)}
.foot-desc{font-size:14.5px;line-height:1.85;color:rgba(232,237,230,.68);max-width:44ch}
.foot-title{font-size:14px;font-weight:600;color:var(--lime-400);margin-bottom:14px;letter-spacing:.02em}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14.5px;color:rgba(232,237,230,.75);transition:color .16s ease}
.foot-links a:hover{color:var(--lime-400)}
.foot-info{font-size:14px;line-height:1.8;color:rgba(232,237,230,.62);max-width:34ch}
.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:38px;padding-top:20px;
  border-top:1px solid rgba(232,237,230,.14);
  font-size:13px;color:rgba(232,237,230,.55);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:10px;
  background:transparent;border:1px solid rgba(232,237,230,.26);
  color:#E8EDE6;font-size:13px;cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.to-top:hover{border-color:var(--lime-400);color:var(--lime-400)}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --ink-900:#0C1310;
  --ink-700:#26332C;
  --ink-500:#5C6B63;
  --brand-600:#17803D;
  --brand-500:#1FA85A;
  --lime-400:#CDF24F;
  --accent-500:#FF6A2B;
  --bg:#F5F7F3;
  --surface:#FFFFFF;
  --line:#E2E7DF;
  --error:#D92D20;
  --soft:#F2F6EE;
  --line-dark:rgba(205,242,79,.18);
  --shadow-1:0 1px 2px rgba(12,19,16,.06), 0 10px 28px -14px rgba(12,19,16,.14);
  --shadow-2:0 2px 4px rgba(12,19,16,.08), 0 18px 40px -18px rgba(12,19,16,.22);
  --r-card:16px;
  --r-btn:12px;
  --r-input:10px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:ui-monospace,"SF Mono",Menlo,monospace;
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding-left:0}
::selection{background:var(--lime-400);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 32px}}
.section{padding:56px 0}
@media (min-width:768px){.section{padding:84px 0}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-600);font-weight:600}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:999px;background:var(--lime-400);box-shadow:0 0 0 3px rgba(205,242,79,.24)}
.eyebrow.on-dark{color:var(--lime-400)}

/* ===== Header / 导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(245,247,243,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--ink-900);color:var(--lime-400);display:grid;place-items:center;font-weight:700;font-size:13px;letter-spacing:.02em}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-weight:700;color:var(--ink-900);font-size:17px;letter-spacing:.01em}
.brand-sub{font-size:12px;color:var(--ink-500);letter-spacing:.06em}
.nav-links{display:none;align-items:center;gap:26px;margin-left:10px}
.nav-link{position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;transition:color .16s ease;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime-400);transform:scaleX(0);transform-origin:left;transition:transform .16s ease}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink-900);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{display:none;align-items:center;gap:8px;width:250px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--ink-500);transition:border-color .16s ease,box-shadow .16s ease}
.search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,168,90,.16)}
.search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}
.search input::placeholder{color:#8A968E}
.search .kbd{font-family:var(--font-num);font-size:11px;padding:2px 7px;border:1px solid var(--line);border-radius:999px;color:var(--ink-500);white-space:nowrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,filter .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-1)}
.btn-primary:active{transform:none;box-shadow:none}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px)}
.btn-lime{background:var(--lime-400);color:var(--ink-900)}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(205,242,79,.6)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.btn-outline-light:hover{border-color:#fff;transform:translateY(-2px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.nav-cta{display:none;height:42px;padding:0 18px;font-size:14.5px}
.burger{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);border-radius:12px;cursor:pointer;color:var(--ink-900)}
.burger:hover{border-color:var(--brand-500);color:var(--brand-600)}
@media (min-width:1024px){
  .nav-links{display:flex}
  .search{display:flex}
  .nav-cta{display:inline-flex}
  .burger{display:none}
}
@media (min-width:1280px){.nav-links{gap:28px}}

/* 移动端抽屉 */
.scrim{position:fixed;inset:0;background:rgba(12,19,16,.45);opacity:0;pointer-events:none;transition:opacity .28s ease;z-index:55}
.scrim.show{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:var(--surface);border-left:1px solid var(--line);transform:translateX(102%);transition:transform .28s ease;z-index:60;padding:22px;display:flex;flex-direction:column;gap:20px;overflow-y:auto}
.drawer.open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:transparent;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{padding:12px 0;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--ink-700)}
.drawer-nav a.active{color:var(--brand-600);font-weight:600}
.drawer .search{display:flex;width:100%}
body.no-scroll{overflow:hidden}

/* ===== 文章头部 ===== */
.hero-article{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;padding:32px 0 46px}
.hero-article::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center right;opacity:.26}
.hero-article::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(12,19,16,.96) 0%,rgba(12,19,16,.82) 46%,rgba(12,19,16,.6) 100%)}
.hero-article .wrap{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6)}
.crumbs a{color:rgba(255,255,255,.78);transition:color .16s ease}
.crumbs a:hover{color:var(--lime-400)}
.crumbs .sep{color:rgba(255,255,255,.35)}
.crumbs .current{color:#fff;font-weight:600}
.article-hero{display:grid;grid-template-columns:1fr;gap:28px;margin-top:26px;align-items:end}
@media (min-width:1024px){.article-hero{grid-template-columns:1fr 360px;gap:40px}}
.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em;background:rgba(205,242,79,.14);color:var(--lime-400);border:1px solid var(--line-dark)}
.article-title{font-size:clamp(26px,3.6vw,42px);line-height:1.24;font-weight:700;letter-spacing:-.01em;color:#fff;margin:16px 0 18px;max-width:22ch}
.meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:rgba(255,255,255,.7)}
.meta-row i{color:var(--lime-400);margin-right:6px}
.article-hero-fig{border-radius:20px;overflow:hidden;border:1px solid var(--line-dark);box-shadow:0 24px 60px -30px rgba(0,0,0,.8);aspect-ratio:16/10}
.article-hero-fig img{width:100%;height:100%;object-fit:cover}
@media (max-width:1023px){.article-hero-fig{display:none}}

/* ===== 阅读布局 ===== */
.read-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;align-items:start}
@media (min-width:1024px){.read-layout{grid-template-columns:minmax(0,1fr) 336px;gap:40px}}
.article-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1)}
@media (min-width:768px){.article-body{padding:38px 40px 42px}}
.article-body p{margin:0 0 1.15em;max-width:76ch;color:var(--ink-700);font-size:16.5px;line-height:1.85}
.article-body h2{font-size:clamp(21px,2.3vw,27px);line-height:1.38;font-weight:700;color:var(--ink-900);margin:2em 0 .7em;padding-left:14px;border-left:4px solid var(--lime-400);scroll-margin-top:92px}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--ink-900);margin:1.6em 0 .6em;scroll-margin-top:92px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink-900);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:24px;max-width:76ch}
.article-body li{margin:.42em 0;line-height:1.8}
.article-body ul{list-style:none;padding-left:20px}
.article-body ul>li{position:relative}
.article-body ul>li::before{content:"";position:absolute;left:-16px;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--brand-500)}
.article-body ol{list-style:decimal}
.article-body ol>li::marker{color:var(--brand-600);font-weight:600;font-family:var(--font-num)}
.article-body strong{color:var(--ink-900);font-weight:600}
.article-body a{color:var(--brand-600);border-bottom:1px solid rgba(23,128,61,.32);transition:border-color .16s ease,color .16s ease}
.article-body a:hover{color:var(--brand-500);border-color:var(--brand-500)}
.article-body blockquote{margin:1.5em 0;padding:16px 22px;background:var(--soft);border-left:3px solid var(--lime-400);border-radius:0 12px 12px 0;color:var(--ink-700)}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.5em 0;border:1px solid var(--line)}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--ink-500);margin-top:8px;line-height:1.7}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0}
.article-body code{font-family:var(--font-num);font-size:14px;background:var(--soft);padding:2px 6px;border-radius:6px;color:var(--ink-900)}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
.article-body th{background:var(--soft);color:var(--ink-900);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFBF8}
@media (max-width:768px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
.empty-state{padding:34px 6px;text-align:center}
.empty-title{font-size:22px;font-weight:700;color:var(--ink-900);margin-bottom:10px}
.empty-state p{color:var(--ink-500);max-width:52ch;margin:0 auto 20px}

/* 标签行 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.tag{font-size:13px;padding:6px 14px;border-radius:999px;background:var(--soft);border:1px solid var(--line);color:var(--ink-700);transition:border-color .16s ease,color .16s ease,background-color .16s ease}
.tag:hover{border-color:var(--brand-500);color:var(--brand-600);background:#fff}

/* 侧栏 */
.aside{display:flex;flex-direction:column;gap:18px}
@media (min-width:1024px){.aside{position:sticky;top:88px}}
.aside-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-1)}
.aside-card.is-dark{background:var(--ink-900);border-color:var(--line-dark);color:rgba(255,255,255,.78)}
.aside-title{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--ink-900);margin-bottom:14px}
.aside-title::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--lime-400);flex-shrink:0}
.aside-card.is-dark .aside-title{color:#fff}
.aside-card.is-dark p{color:rgba(255,255,255,.72)}
.toc{list-style:none;margin:0;padding:0;font-size:14px}
.toc li a{display:block;padding:7px 0 7px 13px;border-left:2px solid var(--line);color:var(--ink-500);line-height:1.6;transition:color .16s ease,border-color .16s ease}
.toc li a:hover{color:var(--brand-600);border-color:var(--brand-500)}
.toc li.lv3 a{padding-left:26px;font-size:13.5px;color:#7C8A81}
.aside-empty{font-size:13.5px;color:var(--ink-500);line-height:1.7;margin-top:6px}
.mini-list{list-style:none;margin:0;padding:0}
.mini-list li+li{border-top:1px solid var(--line)}
.mini-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;font-size:14.5px;color:var(--ink-700);transition:color .16s ease,padding-left .16s ease}
.mini-list a:hover{color:var(--brand-600);padding-left:4px}
.mini-list i{font-size:12px;color:var(--brand-500)}
.aside-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--lime-400);font-size:13px;letter-spacing:.04em}
.aside-tip-list{display:flex;flex-direction:column;gap:12px;margin-top:4px}
.aside-tip{display:flex;gap:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.78)}
.aside-tip i{color:var(--lime-400);margin-top:5px}

/* 相关推荐 */
.sec-head{max-width:720px;margin-bottom:28px}
.sec-title{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;color:var(--ink-900);margin-top:14px}
.sec-sub{color:var(--ink-500);font-size:15.5px;margin-top:10px}
.rel-list{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.rel-list{grid-template-columns:repeat(3,1fr)}}
.rel-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(31,168,90,.4)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--soft)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-500)}
.rel-meta .pill{background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:2px 10px;color:var(--brand-600);font-weight:600}
.rel-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--ink-900);transition:color .16s ease}
.rel-card:hover .rel-title{color:var(--brand-600)}
.rel-desc{font-size:14px;color:var(--ink-500);line-height:1.7}
.rel-more{margin-top:auto;font-size:13.5px;color:var(--brand-600);font-weight:600;display:inline-flex;align-items:center;gap:6px}

/* CTA 条 */
.cta-band{background:var(--ink-900);border-radius:20px;padding:32px 26px;display:grid;gap:24px;align-items:center;position:relative;overflow:hidden}
@media (min-width:900px){.cta-band{grid-template-columns:1fr auto;padding:42px 48px;gap:40px}}
.cta-band::before{content:"";position:absolute;left:-60px;bottom:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(205,242,79,.16),transparent 68%)}
.cta-title{position:relative;font-size:clamp(21px,2.4vw,29px);line-height:1.35;font-weight:700;color:#fff}
.cta-text{position:relative;color:rgba(255,255,255,.74);font-size:15.5px;margin-top:12px;max-width:60ch}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:64px}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:40px}
@media (min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand .brand-mark{background:rgba(205,242,79,.12);border:1px solid var(--line-dark)}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:rgba(255,255,255,.55)}
.foot-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:42ch}
.foot-title{font-size:14px;font-weight:600;color:var(--lime-400);margin-bottom:14px;letter-spacing:.02em}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .16s ease,transform .16s ease}
.foot-links a:hover{color:#fff;transform:translateX(3px)}
.foot-info{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0 26px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;color:rgba(255,255,255,.55)}
.to-top{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;border:1px solid rgba(255,255,255,.24);background:transparent;color:rgba(255,255,255,.8);font-size:13px;cursor:pointer;transition:border-color .16s ease,color .16s ease,transform .16s ease}
.to-top:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px)}

/* roulang page: category2 */
:root{
  --ink-900:#0C1310;
  --ink-700:#26332C;
  --ink-500:#5C6B63;
  --brand-600:#17803D;
  --brand-500:#1FA85A;
  --lime-400:#CDF24F;
  --accent-500:#FF6A2B;
  --bg:#F5F7F3;
  --surface:#FFFFFF;
  --line:#E2E7DF;
  --error:#D92D20;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 1px 2px rgba(12,19,16,.06),0 10px 28px -14px rgba(12,19,16,.14);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.3}
h1{font-size:clamp(28px,4.2vw,44px);line-height:1.2}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.15em;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15.5px}
:focus-visible{outline:2px solid var(--brand-500);outline-offset:2px}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 32px}}
.prose-limit{max-width:76ch}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.section{padding:64px 0}
@media (min-width:768px){.section{padding:96px 0}}
.section-tight{padding:44px 0}
@media (min-width:768px){.section-tight{padding:64px 0}}
.section-dark{background:var(--ink-900);color:#DCE4DC}
.section-dark h2,.section-dark h3{color:#F3F7F2}
.section-head{max-width:820px;margin-bottom:36px}
.section-head p{color:var(--ink-500);margin-top:12px;margin-bottom:0}
.section-dark .section-head p{color:rgba(220,228,220,.76)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(245,247,243,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 1px 2px rgba(12,19,16,.06),0 10px 28px -14px rgba(12,19,16,.14)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;text-decoration:none}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--ink-900);color:var(--lime-400);
  display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:16px;font-weight:700;color:var(--ink-900)}
.brand-sub{font-size:11.5px;color:var(--ink-500);letter-spacing:.04em}
.nav-links{display:none}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:26px;margin-left:10px}
}
.nav-link{
  position:relative;font-size:15.5px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
  transition:color .16s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime-400);
  transform:scaleX(0);transform-origin:left;transition:transform .16s ease;
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink-900);font-weight:600}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{
  display:none;align-items:center;gap:8px;height:40px;width:260px;
  padding:0 10px;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--surface);color:var(--ink-500);transition:border-color .16s ease,box-shadow .16s ease;
}
@media (min-width:1024px){.search{display:flex;width:280px}}
.search input{border:0;outline:0;background:transparent;width:100%;color:var(--ink-700);font-size:13.5px}
.search input::placeholder{color:#9AA79F}
.search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(23,128,61,.15)}
.kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--ink-500);
  border:1px solid var(--line);background:var(--bg);border-radius:6px;padding:1px 6px;white-space:nowrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,filter .16s ease,border-color .16s ease;
  text-decoration:none;
}
.btn:active{transform:translateY(0)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{color:#fff;background:var(--brand-600);filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 10px 24px -12px rgba(23,128,61,.7)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{color:var(--ink-900);border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-card)}
.btn-lime{background:var(--lime-400);color:var(--ink-900)}
.btn-lime:hover{color:var(--ink-900);filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px -14px rgba(205,242,79,.9)}
.btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.28);color:#fff}
.btn-ghost-dark:hover{color:#fff;border-color:rgba(205,242,79,.6)}
.nav-cta{height:42px;padding:0 18px;font-size:14.5px}
@media (max-width:639px){.nav-cta{display:none}}
.burger{
  display:inline-grid;place-items:center;width:40px;height:40px;
  border:1px solid var(--line);border-radius:var(--radius-input);background:var(--surface);
  color:var(--ink-900);font-size:15px;
}
@media (min-width:1024px){.burger{display:none}}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,86vw);z-index:80;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .24s ease;
  padding:22px 20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,19,16,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.show{opacity:1;visibility:visible}
body.no-scroll{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--ink-700)}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  padding:11px 6px;border-bottom:1px solid var(--line);color:var(--ink-700);
  font-size:15.5px;border-radius:8px;
}
.drawer-nav a.active{color:var(--brand-600);font-weight:600}

/* ---------- hero ---------- */
.hero{padding:52px 0 44px;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%)}
@media (min-width:768px){.hero{padding:72px 0 60px}}
.hero-grid{display:grid;gap:34px}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:7fr 5fr;align-items:center;gap:56px}
}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;
  letter-spacing:.14em;color:var(--ink-500);margin-bottom:16px;
}
.kicker::before{content:"";width:7px;height:7px;border-radius:999px;background:var(--brand-500);flex-shrink:0}
.hero h1{margin-bottom:16px}
.hero-sub{font-size:17px;color:var(--ink-500);max-width:60ch;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12.5px;color:var(--ink-500);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:5px 12px;
}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.hero-media .media-badge{
  position:absolute;left:18px;bottom:18px;background:var(--ink-900);color:var(--lime-400);
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;
  padding:7px 13px;border-radius:999px;
}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--ink-500);padding:18px 0 0}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--brand-600)}
.crumb span.sep{margin:0 7px;color:#A9B4AC}
.crumb strong{color:var(--ink-700);font-weight:600}

/* ---------- timeline ---------- */
.timeline{margin-top:8px}
.step{position:relative;padding-left:66px;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:20px;top:46px;bottom:0;width:1px;background:var(--line);
}
.step:last-child::before{display:none}
.step-num{
  position:absolute;left:0;top:0;width:42px;height:42px;border-radius:999px;
  background:var(--ink-900);color:var(--lime-400);
  display:grid;place-items:center;font-family:var(--font-mono);
  font-size:13.5px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 0 0 4px rgba(205,242,79,.16);
}
.step h3{margin-bottom:8px;transition:color .16s ease}
.step:hover h3{color:var(--brand-600)}
.step p{color:var(--ink-500);margin-bottom:10px}
.step-note{
  display:inline-flex;align-items:flex-start;gap:8px;font-size:14px;color:var(--ink-700);
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--lime-400);
  border-radius:10px;padding:10px 14px;max-width:100%;
}
.step-note i{color:var(--brand-500);margin-top:4px}
@media (max-width:560px){
  .step{padding-left:56px}
  .step-num{width:36px;height:36px;font-size:12.5px}
  .step::before{left:17px;top:40px}
}

/* ---------- dark metrics ---------- */
.dark-grid{display:grid;gap:34px}
@media (min-width:1024px){.dark-grid{grid-template-columns:6fr 6fr;gap:56px;align-items:start}}
.dark-card{
  border:1px solid rgba(205,242,79,.18);border-radius:var(--radius-card);
  background:rgba(255,255,255,.02);padding:22px;
}
.check-list li{
  position:relative;padding-left:26px;margin-bottom:14px;
  color:rgba(230,238,230,.9);font-size:15.5px;
}
.check-list li:last-child{margin-bottom:0}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--lime-400);
}
.check-list li b{color:#fff;font-weight:600;display:block;margin-bottom:2px}
.check-list li span{display:block;color:rgba(220,228,220,.72);font-size:14.5px}
.metric-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (min-width:768px){.metric-row{grid-template-columns:repeat(2,minmax(0,1fr))}}
.metric{border:1px solid rgba(205,242,79,.16);border-radius:14px;padding:18px 16px;background:rgba(255,255,255,.02)}
.metric-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--lime-400);
  font-size:clamp(30px,4vw,42px);font-weight:700;line-height:1.1;
}
.metric-num small{font-size:13px;color:rgba(220,228,220,.7);margin-left:4px;font-family:var(--font-sans)}
.metric-label{font-size:13.5px;color:rgba(220,228,220,.72);margin-top:6px}

/* ---------- quick check list ---------- */
.qa-list{display:grid;gap:0;border-top:1px solid var(--line)}
@media (min-width:768px){.qa-list{grid-template-columns:1fr 1fr;column-gap:44px}}
.qa-item{border-bottom:1px solid var(--line);padding:22px 0}
.qa-item h3{font-size:17.5px;margin-bottom:8px;display:flex;gap:10px;align-items:flex-start}
.qa-item h3 i{color:var(--brand-500);font-size:14px;margin-top:6px}
.qa-item p{color:var(--ink-500);margin-bottom:0;font-size:15.5px}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-of-type{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item summary::after{
  content:"+";font-family:var(--font-mono);font-size:20px;line-height:1;color:var(--brand-500);
  transition:transform .2s ease,color .18s ease;flex-shrink:0;
}
.faq-item[open] summary{color:var(--brand-600)}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-body{padding:0 0 22px;color:var(--ink-500);font-size:15.5px;line-height:1.8;max-width:72ch}
.faq-body p:last-child{margin-bottom:0}

/* ---------- cta form ---------- */
.cta-grid{display:grid;gap:36px}
@media (min-width:1024px){.cta-grid{grid-template-columns:6fr 6fr;gap:56px;align-items:start}}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:26px}
@media (min-width:768px){.form-card{padding:32px}}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-input);
  background:var(--bg);color:var(--ink-900);padding:0 14px;height:48px;
  transition:border-color .16s ease,box-shadow .16s ease,background-color .16s ease;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AA79F}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(23,128,61,.15);
}
.field .hint{font-size:12.5px;color:var(--ink-500);margin-top:6px}
.form-privacy{font-size:12px;color:var(--ink-500);margin-top:14px;margin-bottom:0}
.cta-list li{position:relative;padding-left:24px;margin-bottom:12px;color:var(--ink-500)}
.cta-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--lime-400)}
.section-dark .cta-list li{color:rgba(220,228,220,.78)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#C9D3CB;padding:56px 0 28px;font-size:14.5px}
.foot-grid{display:grid;gap:34px}
@media (min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:rgba(220,228,220,.6)}
.foot-desc{color:rgba(220,228,220,.72);font-size:14px;line-height:1.8;margin-bottom:0;max-width:42ch}
.foot-title{color:var(--lime-400);font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.03em}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{color:rgba(220,228,220,.78);font-size:14px;transition:color .16s ease}
.foot-links a:hover{color:var(--lime-400)}
.foot-info{color:rgba(220,228,220,.66);font-size:13.5px;line-height:1.8;margin-bottom:0}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(205,242,79,.16);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(220,228,220,.6);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;background:transparent;
  border:1px solid rgba(255,255,255,.24);color:#E4EBE5;border-radius:10px;
  padding:8px 14px;font-size:13px;transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.to-top:hover{border-color:rgba(205,242,79,.65);color:var(--lime-400);transform:translateY(-2px)}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --ink-900:#0C1310;
  --ink-700:#26332C;
  --ink-500:#5C6B63;
  --brand-600:#17803D;
  --brand-500:#1FA85A;
  --lime-400:#CDF24F;
  --accent-500:#FF6A2B;
  --bg:#F5F7F3;
  --surface:#FFFFFF;
  --line:#E2E7DF;
  --error:#D92D20;
  --card-r:16px;
  --btn-r:12px;
  --input-r:10px;
  --shadow-sm:0 1px 2px rgba(12,19,16,.06);
  --shadow-md:0 10px 28px -14px rgba(12,19,16,.14);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,monospace;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink-900);
  font-family:var(--font-sans);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-500);text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px}
.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 32px}}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
p{max-width:76ch}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(245,247,243,.86);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px -16px rgba(12,19,16,.32)}
.nav-inner{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;color:inherit;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink-900);
  color:var(--lime-400);display:grid;place-items:center;
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-weight:700;font-size:16px;color:var(--ink-900);letter-spacing:.02em}
.brand-sub{font-size:11.5px;color:var(--ink-500);letter-spacing:.06em}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;font-size:15px;color:var(--ink-700);padding:8px 0;transition:color .16s}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;
  background:var(--lime-400);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--ink-900)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--ink-900);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  width:270px;transition:border-color .16s, box-shadow .16s;
}
.search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(31,168,90,.15)}
.search i{color:var(--ink-500);font-size:13px}
.search input{border:0;outline:0;background:transparent;font-size:14px;flex:1;min-width:0;color:var(--ink-900)}
.search input::placeholder{color:#93A099}
.kbd{
  font-size:11px;color:var(--ink-500);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;background:#F8FAF6;white-space:nowrap;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--btn-r);
  font-weight:600;font-size:15px;border:1px solid transparent;
  transition:transform .16s, box-shadow .16s, background .16s, color .16s, border-color .16s, filter .16s;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-lime{background:var(--lime-400);color:var(--ink-900)}
.btn-lime:hover{filter:brightness(1.05);transform:translateY(-2px);box-shadow:0 12px 26px -16px rgba(205,242,79,.7)}
.btn-lime:active{transform:translateY(0)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.34);color:#fff}
.btn-outline-light:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.nav-cta{height:40px;padding:0 18px;font-size:14.5px}
.burger{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-900);align-items:center;justify-content:center;
}
.burger:hover{border-color:var(--brand-500);color:var(--brand-600)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,19,16,.48);
  opacity:0;visibility:hidden;transition:opacity .22s ease, visibility .22s;z-index:60;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:70;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .26s ease;
  display:flex;flex-direction:column;gap:18px;padding:20px 20px 28px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer-head .brand-name{font-size:15px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-700);
}
.drawer-close:hover{border-color:var(--brand-500);color:var(--brand-600)}
.drawer .search{width:100%}
.drawer-links{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line);padding-top:10px}
.drawer-links a{
  color:var(--ink-700);font-size:15.5px;padding:11px 4px;border-bottom:1px solid var(--line);
}
.drawer-links a:hover,.drawer-links a.active{color:var(--brand-600)}
body.no-scroll{overflow:hidden}

/* ---------- hero ---------- */
.hero{
  position:relative;padding:52px 0 56px;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle, rgba(31,168,90,.12), rgba(31,168,90,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
  color:var(--ink-500);text-transform:uppercase;
}
.kicker .dot{width:7px;height:7px;border-radius:999px;background:var(--lime-400);box-shadow:0 0 0 4px rgba(205,242,79,.22)}
.hero h1{
  font-size:clamp(30px,4.6vw,50px);line-height:1.2;font-weight:700;
  margin:16px 0 0;letter-spacing:-.01em;
}
.hero-lead{margin-top:16px;font-size:17px;color:var(--ink-500);max-width:60ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.mini-tag{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-700);
  background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 13px;
}
.mini-tag i{color:var(--brand-500);font-size:11px}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow-md);
}
.hero-media .float-card{
  position:absolute;left:-14px;bottom:-18px;background:var(--ink-900);color:#fff;
  border-radius:14px;padding:14px 18px;border:1px solid rgba(205,242,79,.18);
  box-shadow:var(--shadow-md);min-width:200px;
}
.hero-media .float-card .fc-label{font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.06em}
.hero-media .float-card .fc-value{font-size:26px;font-weight:700;color:var(--lime-400);line-height:1.2}

/* ---------- sections ---------- */
.sec{padding:64px 0}
@media(min-width:768px){.sec{padding:92px 0}}
.sec-head{max-width:760px}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;margin-top:12px}
.sec-head p{margin-top:14px;color:var(--ink-500);font-size:16.5px}
.sec-dark{background:var(--ink-900);color:#EDF2EC}
.sec-dark .sec-head h2{color:#fff}
.sec-dark .sec-head p{color:rgba(237,242,236,.66)}
.sec-dark .kicker{color:rgba(237,242,236,.6)}
.sec-alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--card-r);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(31,168,90,.35)}
.card:hover .card-title{color:var(--brand-600)}
.card-thumb{aspect-ratio:16/9;overflow:hidden;background:#EDF1EA}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-body{padding:22px}
.card-title{font-size:19px;font-weight:600;line-height:1.45;transition:color .18s}
.card-text{margin-top:10px;color:var(--ink-500);font-size:15.5px;line-height:1.8}
.tick-list{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.tick-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-700);line-height:1.7}
.tick-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:2px;background:var(--brand-500);
}

/* ---------- steps (dark) ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:46px}
.step{
  background:rgba(255,255,255,.03);border:1px solid rgba(205,242,79,.18);
  border-radius:var(--card-r);padding:24px 22px;transition:transform .18s, border-color .18s, background .18s;
}
.step:hover{transform:translateY(-3px);border-color:rgba(205,242,79,.42);background:rgba(255,255,255,.055)}
.step-no{font-size:13px;letter-spacing:.12em;color:var(--lime-400);font-weight:700}
.step h3{margin-top:12px;font-size:18.5px;font-weight:600;color:#fff}
.step p{margin-top:10px;font-size:14.8px;line-height:1.8;color:rgba(237,242,236,.66)}
.step-bar{margin-top:18px;height:3px;border-radius:999px;background:rgba(205,242,79,.16);overflow:hidden}
.step-bar span{display:block;height:100%;background:var(--lime-400);border-radius:999px}

/* ---------- accordion checklist ---------- */
.acc-wrap{max-width:920px;margin:42px auto 0}
.acc-item{border-bottom:1px solid var(--line);background:transparent}
.acc-item:first-child{border-top:1px solid var(--line)}
.acc-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;
  padding:22px 6px;transition:background .18s;
}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary:hover{background:rgba(31,168,90,.05)}
.acc-no{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:700;color:var(--brand-600);letter-spacing:.04em;flex:0 0 34px;
}
.acc-title{font-size:17px;font-weight:600;color:var(--ink-900);flex:1;transition:color .18s;line-height:1.5}
.acc-icon{
  position:relative;width:24px;height:24px;flex:0 0 auto;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  transition:transform .2s ease, border-color .2s ease;
}
.acc-icon::before,.acc-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--ink-700);border-radius:2px;
}
.acc-icon::before{width:11px;height:1.6px}
.acc-icon::after{width:1.6px;height:11px;transition:opacity .2s}
details[open] .acc-icon{transform:rotate(180deg);border-color:var(--brand-500)}
details[open] .acc-icon::after{opacity:0}
details[open] .acc-title{color:var(--brand-600)}
.acc-body{padding:0 6px 24px 58px;color:var(--ink-500);font-size:15.5px;line-height:1.85}
.acc-body p+p{margin-top:10px}
.acc-body strong{color:var(--ink-700);font-weight:600}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:40px auto 0}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .18s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-600)}
.faq-item[open] summary{color:var(--brand-600)}
.faq-item .faq-a{padding:0 4px 22px 0;color:var(--ink-500);font-size:15.5px;line-height:1.85}
.faq-sign{
  margin-left:auto;width:22px;height:22px;position:relative;flex:0 0 auto;
}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:currentColor;border-radius:2px;
}
.faq-sign::before{width:12px;height:1.8px}
.faq-sign::after{width:1.8px;height:12px;transition:opacity .2s}
.faq-item[open] .faq-sign::after{opacity:0}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink-900);border-radius:20px;padding:34px 34px;
  display:flex;align-items:center;gap:28px;justify-content:space-between;
  border:1px solid rgba(205,242,79,.18);box-shadow:var(--shadow-md);
}
.cta-band h3{color:#fff;font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.35}
.cta-band p{color:rgba(237,242,236,.66);margin-top:10px;font-size:15.5px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(237,242,236,.72);margin-top:0;padding:56px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand .brand-name{color:#fff}
.foot-brand .brand-sub{color:rgba(237,242,236,.55)}
.foot-brand .brand-mark{background:rgba(205,242,79,.14);color:var(--lime-400);border:1px solid rgba(205,242,79,.24)}
.foot-desc{font-size:14.5px;line-height:1.85;color:rgba(237,242,236,.62);max-width:42ch}
.foot-title{font-size:14px;font-weight:600;color:var(--lime-400);letter-spacing:.06em;margin-bottom:14px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{color:rgba(237,242,236,.72);font-size:14.5px;transition:color .16s}
.foot-links a:hover{color:var(--lime-400)}
.foot-info{font-size:14.5px;line-height:1.85;color:rgba(237,242,236,.62);max-width:34ch}
.foot-bottom{
  margin-top:44px;border-top:1px solid rgba(205,242,79,.14);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(237,242,236,.5);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border-radius:10px;border:1px solid rgba(205,242,79,.24);background:transparent;
  color:rgba(237,242,236,.82);font-size:13.5px;transition:border-color .16s, color .16s, transform .16s;
}
.to-top:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media(max-width:1023px){
  .nav-links,.nav-actions .search{display:none}
  .burger{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-media .float-card{position:static;margin-top:16px;display:inline-block}
  .grid-3{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{flex-direction:column;align-items:flex-start}
}
@media(max-width:767px){
  body{font-size:16px}
  .hero{padding:38px 0 44px}
  .grid-3,.steps{grid-template-columns:1fr}
  .acc-body{padding-left:6px}
  .acc-item summary{gap:12px;padding:18px 2px}
  .acc-no{flex:0 0 28px;font-size:14px}
  .acc-title{font-size:16px}
  .foot-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 22px;border-radius:16px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
  .nav-cta{display:none}
}
@media(max-width:520px){
  .hero h1{font-size:28px}
  .sec{padding:52px 0}
  .card-body{padding:18px}
}

/* roulang page: category3 */
:root{
  --ink-900:#0C1310;
  --ink-700:#26332C;
  --ink-500:#5C6B63;
  --brand-600:#17803D;
  --brand-500:#1FA85A;
  --lime-400:#CDF24F;
  --accent-500:#FF6A2B;
  --bg:#F5F7F3;
  --surface:#FFFFFF;
  --line:#E2E7DF;
  --error:#D92D20;
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(12,19,16,.06);
  --shadow-md:0 1px 2px rgba(12,19,16,.06),0 10px 28px -14px rgba(12,19,16,.14);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

.wrap{max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.wrap{padding:0 32px;}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(245,247,243,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.scrolled{box-shadow:0 8px 24px -18px rgba(12,19,16,.45);}
.nav-inner{display:flex;align-items:center;gap:18px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink-900);color:var(--lime-400);
  display:grid;place-items:center;font-weight:700;font-size:13px;letter-spacing:.06em;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-weight:700;font-size:16px;color:var(--ink-900);letter-spacing:.01em;}
.brand-sub{font-size:11px;color:var(--ink-500);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:26px;margin:0 auto;}
.nav-link{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;transition:color .16s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime-400);
  transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-link:hover{color:var(--ink-900);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--ink-900);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.search{
  display:flex;align-items:center;gap:8px;width:270px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;background:var(--surface);
  transition:border-color .16s ease,box-shadow .16s ease;
}
.search i{color:var(--ink-500);font-size:13px;}
.search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;}
.search input::placeholder{color:#9AA79F;}
.search:focus-within{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(23,128,61,.14);}
.kbd{
  font-family:var(--font-mono);font-size:11px;color:var(--ink-500);background:#fff;
  border:1px solid var(--line);border-radius:6px;padding:2px 6px;white-space:nowrap;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,filter .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease,border-color .16s ease;
}
.btn:active{transform:translateY(0);}
.btn:focus-visible{outline:2px solid var(--lime-400);outline-offset:2px;}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-900);}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-2px);}
.btn-lime{background:var(--lime-400);color:var(--ink-900);}
.btn-lime:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 26px -16px rgba(205,242,79,.9);}
.btn-ghost-dark{background:transparent;border-color:rgba(255,255,255,.32);color:#fff;}
.btn-ghost-dark:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px);}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.burger{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink-900);cursor:pointer;
}
.burger:hover{border-color:var(--brand-500);color:var(--brand-600);}
@media (max-width:1100px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
}
@media (max-width:880px){
  .search{display:none;}
  .nav-cta{display:none;}
}

/* 抽屉 */
.mask{
  position:fixed;inset:0;background:rgba(12,19,16,.45);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:80;
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:20px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink-900);cursor:pointer;
}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin-bottom:18px;
  border:1px solid var(--line);border-radius:var(--radius-input);background:var(--bg);
}
.drawer-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:20px;}
.drawer-nav a{
  padding:12px 12px;border-radius:10px;font-size:15px;color:var(--ink-700);
  transition:background-color .16s ease,color .16s ease;
}
.drawer-nav a:hover{background:var(--bg);color:var(--ink-900);}
.drawer-nav a.active{background:rgba(23,128,61,.1);color:var(--brand-600);font-weight:600;}
.drawer-foot{border-top:1px solid var(--line);padding-top:16px;font-size:13px;color:var(--ink-500);line-height:1.75;}

/* ============ 通用板块 ============ */
.section{padding:64px 0;}
@media (min-width:768px){.section{padding:96px 0;}}
.section-dark{background:var(--ink-900);color:#D7DFD9;}
.section-dark .kicker{color:rgba(215,223,217,.66);}
.section-dark h2,.section-dark h3{color:#fff;}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.16em;color:var(--ink-500);margin-bottom:14px;
}
.kicker::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--lime-400);flex:none;}
h1{font-size:clamp(30px,4.6vw,52px);line-height:1.2;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.3;font-weight:700;color:var(--ink-900);}
h3{font-size:21px;line-height:1.45;font-weight:600;color:var(--ink-900);}
.lead{font-size:17px;line-height:1.8;color:var(--ink-500);max-width:76ch;}
.sec-head{max-width:760px;margin-bottom:36px;}
.sec-head p{margin-top:12px;color:var(--ink-500);font-size:16.5px;}
.section-dark .sec-head p{color:rgba(215,223,217,.72);}

/* ============ Hero ============ */
.hero{
  position:relative;padding:52px 0 60px;
  background:
    radial-gradient(120% 90% at 88% 6%,rgba(205,242,79,.16),transparent 58%),
    var(--bg);
  border-bottom:1px solid var(--line);
}
@media (min-width:768px){.hero{padding:76px 0 84px;}}
.hero-grid{display:grid;gap:36px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:52px;}}
.hero h1{margin-bottom:18px;}
.hero-sub{font-size:17.5px;line-height:1.8;color:var(--ink-500);max-width:56ch;margin-bottom:26px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:var(--ink-700);
  background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 13px;
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);flex:none;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;border-radius:20px;border:1px solid var(--line);
  aspect-ratio:4/3;object-fit:cover;box-shadow:var(--shadow-md);
}
.hero-note{
  position:absolute;left:16px;bottom:16px;right:16px;
  background:rgba(12,19,16,.82);color:#EAF0EB;border-radius:14px;padding:12px 16px;
  font-size:13.5px;line-height:1.6;backdrop-filter:blur(6px);
  display:flex;align-items:center;gap:10px;
}
.hero-note i{color:var(--lime-400);}

/* ============ 指标条 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:rgba(205,242,79,.18);border:1px solid rgba(205,242,79,.18);border-radius:var(--radius-card);overflow:hidden;}
@media (min-width:900px){.stat-grid{grid-template-columns:repeat(4,1fr);}}
.stat{background:var(--ink-900);padding:26px 22px;}
.stat .val{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(34px,4.6vw,50px);line-height:1;font-weight:700;color:var(--lime-400);}
.stat .val small{font-size:15px;font-weight:600;color:rgba(205,242,79,.8);margin-left:4px;}
.stat .lb{margin-top:12px;font-size:14.5px;color:#fff;font-weight:600;}
.stat .ds{margin-top:4px;font-size:13px;color:rgba(215,223,217,.62);line-height:1.65;}

/* ============ 配图 ============ */
.figure{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-sm);margin-bottom:36px;
}
.figure img{width:100%;aspect-ratio:21/9;object-fit:cover;}
.figure figcaption{padding:12px 18px;font-size:13px;color:var(--ink-500);border-top:1px solid var(--line);}

/* ============ 对照表 ============ */
.cmp{
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);
  box-shadow:var(--shadow-sm);
}
.cmp-head,.cmp-row{display:grid;grid-template-columns:1.1fr 2.2fr .9fr;gap:18px;padding:18px 22px;align-items:center;}
.cmp-head{
  background:var(--ink-900);color:#fff;font-size:13px;letter-spacing:.1em;font-weight:600;
}
.cmp-head span:nth-child(3){text-align:right;}
.cmp-row{border-top:1px solid var(--line);transition:background-color .16s ease;}
.cmp-row:hover{background:#FBFCFA;}
.cmp-item{font-weight:600;color:var(--ink-900);font-size:16px;}
.cmp-desc{font-size:15px;color:var(--ink-500);line-height:1.75;}
.cmp-state{text-align:right;}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:999px;border:1px solid transparent;white-space:nowrap;
}
.badge-ok{background:rgba(31,168,90,.12);color:var(--brand-600);border-color:rgba(31,168,90,.28);}
.badge-warn{background:rgba(255,106,43,.12);color:#C24A15;border-color:rgba(255,106,43,.3);}
.badge-off{background:#F1F3EF;color:var(--ink-500);border-color:var(--line);}
@media (max-width:860px){
  .cmp-head{display:none;}
  .cmp-row{grid-template-columns:1fr;gap:8px;padding:18px;}
  .cmp-row+.cmp-row{margin-top:0;}
  .cmp-state{text-align:left;}
}

/* ============ 卡片 ============ */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-3px);border-color:rgba(31,168,90,.35);box-shadow:var(--shadow-md);}
.card:hover h3{color:var(--brand-600);}
.card h3{transition:color .18s ease;margin-bottom:10px;}
.card p{color:var(--ink-500);font-size:15.5px;}
.card-num{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.14em;color:var(--brand-600);
  font-weight:700;margin-bottom:12px;display:block;
}
.mini-list{margin-top:16px;display:flex;flex-direction:column;gap:9px;}
.mini-list li{position:relative;padding-left:16px;font-size:14.5px;color:var(--ink-700);line-height:1.7;}
.mini-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:1px;background:var(--lime-400);
}
.section-dark .mini-list li{color:rgba(215,223,217,.86);}

/* ============ 编号清单 ============ */
.steps{display:flex;flex-direction:column;gap:14px;}
.step{
  display:grid;grid-template-columns:64px 1fr;gap:18px;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px 24px;
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.step:hover{border-color:rgba(31,168,90,.35);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.step-idx{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--brand-500);line-height:1.2;}
.step h3{font-size:18px;margin-bottom:6px;}
.step p{font-size:15px;color:var(--ink-500);}
@media (max-width:520px){
  .step{grid-template-columns:1fr;gap:8px;padding:20px;}
}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink-900);cursor:pointer;list-style:none;
  transition:color .16s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-item[open] summary{color:var(--brand-600);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:grid;place-items:center;font-size:14px;color:var(--brand-600);
  transition:transform .2s ease,background-color .2s ease;
}
.faq-item[open] .faq-icon{transform:rotate(180deg);background:rgba(205,242,79,.28);}
.faq-body{padding:0 4px 24px;font-size:15.5px;line-height:1.85;color:var(--ink-500);max-width:76ch;}

/* ============ CTA ============ */
.cta-panel{
  background:var(--ink-900);border-radius:20px;padding:34px;
  display:grid;gap:32px;align-items:center;
  border:1px solid rgba(205,242,79,.16);
}
@media (min-width:960px){.cta-panel{grid-template-columns:1fr 1fr;padding:48px;gap:48px;}}
.cta-panel h2{color:#fff;margin-bottom:14px;}
.cta-panel p{color:rgba(215,223,217,.75);font-size:16px;max-width:52ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.form-card{
  background:rgba(255,255,255,.045);border:1px solid rgba(205,242,79,.18);border-radius:16px;padding:26px;
}
.form-card .field{margin-bottom:16px;}
.form-card label{display:block;font-size:14px;font-weight:600;color:#EAF0EB;margin-bottom:8px;}
.form-card input,.form-card textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-input);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.2);color:#fff;outline:0;
  transition:border-color .16s ease,box-shadow .16s ease;
}
.form-card textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-card input::placeholder,.form-card textarea::placeholder{color:rgba(255,255,255,.42);}
.form-card input:focus,.form-card textarea:focus{border-color:var(--lime-400);box-shadow:0 0 0 3px rgba(205,242,79,.16);}
.form-card input.invalid{border-color:#FF8A6A;box-shadow:0 0 0 3px rgba(255,106,43,.18);}
.err{display:none;margin-top:8px;font-size:14px;color:#FFB199;}
.err.show{display:block;}
.form-note{margin-top:14px;font-size:12px;color:rgba(215,223,217,.55);line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(215,223,217,.78);padding:56px 0 0;}
.foot-grid{display:grid;gap:34px;}
@media (min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-name{color:#fff;}
.foot-brand .brand-sub{color:rgba(215,223,217,.6);}
.foot-desc{font-size:14.5px;line-height:1.85;color:rgba(215,223,217,.68);max-width:40ch;}
.foot-title{font-size:14px;font-weight:600;color:var(--lime-400);margin-bottom:16px;letter-spacing:.04em;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{font-size:14.5px;color:rgba(215,223,217,.72);transition:color .16s ease;}
.foot-links a:hover{color:var(--lime-400);}
.foot-info{font-size:14px;line-height:1.85;color:rgba(215,223,217,.62);}
.foot-bottom{
  margin-top:44px;border-top:1px solid rgba(205,242,79,.16);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(215,223,217,.6);
}
.to-top{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;
  background:transparent;border:1px solid rgba(255,255,255,.24);border-radius:999px;
  color:#EAF0EB;font-size:13px;cursor:pointer;transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.to-top:hover{border-color:var(--lime-400);color:var(--lime-400);transform:translateY(-2px);}