/* roulang page: index */
:root{
    --sky-night:#171233;
    --sky-deep:#241B4F;
    --brand-500:#6C4CF1;
    --brand-600:#5A38E0;
    --brand-soft:#EFEBFF;
    --aurora:#2ED3C6;
    --star-amber:#FF9F45;
    --bg:#F7F5FC;
    --surface:#FFFFFF;
    --line:#E7E2F5;
    --text:#1A1633;
    --muted:#5F5A7A;
    --radius-card:24px;
    --radius-img:20px;
    --radius-btn:999px;
    --grad-main:linear-gradient(120deg,#6C4CF1 0%,#A855F7 55%,#2ED3C6 100%);
    --grad-cta:linear-gradient(120deg,#FF9F45 0%,#FF7A59 100%);
    --shadow-card:0 8px 28px rgba(28,20,58,.08);
    --shadow-hover:0 16px 40px rgba(28,20,58,.14);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    background:var(--bg);
    color:var(--text);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;color:var(--text);}
  p{margin:0 0 1.1em;}
  p:last-child{margin-bottom:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
  :focus-visible{outline:2px solid var(--aurora);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .app-main{margin-left:248px;min-height:100vh;}

  /* ============ 侧边导航 ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:248px;height:100vh;z-index:60;
    background:var(--sky-night);color:#fff;
    padding:28px 20px 24px;display:flex;flex-direction:column;
    border-right:1px solid rgba(255,255,255,.06);
    overflow-y:auto;
  }
  .sidebar::-webkit-scrollbar{width:6px;}
  .sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:6px;}
  .sidebar-logo{display:flex;align-items:center;gap:10px;padding:4px 6px 20px;border-bottom:1px solid rgba(255,255,255,.09);}
  .logo-mark{position:relative;width:28px;height:28px;border-radius:9px;background:var(--grad-main);flex:none;}
  .logo-mark::after{
    content:'';position:absolute;inset:0;border-radius:9px;
    background-image:radial-gradient(circle at 32% 30%,#fff 0 1.6px,transparent 1.7px),
                     radial-gradient(circle at 70% 64%,#fff 0 1.2px,transparent 1.3px),
                     radial-gradient(circle at 44% 78%,#fff 0 1px,transparent 1.1px);
  }
  .logo-text{font-size:16.5px;font-weight:700;letter-spacing:.02em;color:#fff;}
  .sidebar-nav{display:flex;flex-direction:column;gap:6px;margin-top:26px;flex:1 1 auto;}
  .nav-item{
    position:relative;display:block;padding:11px 16px 11px 18px;border-radius:12px;
    font-size:14.5px;line-height:1.5;color:rgba(255,255,255,.72);
    transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
  }
  .nav-item:hover{background:#F1EDFF;color:var(--brand-600);transform:translateX(2px);}
  .nav-item.is-active{background:var(--brand-soft);color:var(--brand-600);font-weight:600;}
  .nav-item.is-active::before{
    content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:3px;height:58%;border-radius:0 3px 3px 0;background:var(--grad-main);
  }
  .sidebar-cta{width:100%;justify-content:center;margin-top:22px;}
  .sidebar-foot{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.09);}
  .sidebar-foot p{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.5);margin:0 0 4px;}

  /* ============ 移动端顶栏 / 抽屉 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
    align-items:center;justify-content:space-between;padding:0 18px;
    background:rgba(23,18,51,.97);backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(255,255,255,.08);color:#fff;
  }
  .mobile-bar .logo-text{font-size:15.5px;}
  .burger,.drawer-close{
    width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
    border:0;background:transparent;color:#fff;border-radius:12px;
    transition:background 200ms var(--ease);
  }
  .burger:hover,.drawer-close:hover{background:rgba(255,255,255,.1);}
  .drawer-mask{
    position:fixed;inset:0;z-index:55;background:rgba(15,11,36,.58);
    opacity:0;visibility:hidden;transition:opacity 260ms var(--ease),visibility 260ms var(--ease);
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}

  /* ============ 按钮 / 徽章 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 28px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
    cursor:pointer;transition:filter 220ms var(--ease),transform 220ms var(--ease),
      box-shadow 220ms var(--ease),background 220ms var(--ease),color 220ms var(--ease);
  }
  .btn:active{transform:scale(.99);}
  .btn-primary{background:var(--grad-main);color:#fff;box-shadow:0 8px 20px rgba(108,76,241,.28);}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);}
  .btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-500);}
  .btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
  .btn-cta{background:var(--grad-cta);color:#fff;box-shadow:0 8px 20px rgba(255,122,89,.3);}
  .btn-cta:hover{filter:brightness(1.06);transform:translateY(-1px);}
  .btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.32);}
  .btn-light:hover{background:rgba(255,255,255,.18);transform:translateY(-1px);}
  .btn[disabled]{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none;filter:none;}
  .hero .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.38);}
  .hero .btn-ghost:hover{background:rgba(255,255,255,.12);}

  .chip{
    display:inline-block;padding:3px 11px;border-radius:var(--radius-btn);
    background:var(--brand-soft);color:var(--brand-600);
    font-size:12.5px;font-weight:600;line-height:1.6;
  }
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand-600);font-size:14.5px;font-weight:600;
  }
  .link-arrow span{transition:transform 220ms var(--ease);}
  .link-arrow:hover span{transform:translateX(3px);}

  /* ============ 卡片 ============ */
  .card{
    position:relative;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);
    transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .card::after{
    content:'';position:absolute;inset:0;border-radius:inherit;padding:1px;
    background:var(--grad-main);opacity:0;pointer-events:none;
    -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
    -webkit-mask-composite:xor;
    mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
    mask-composite:exclude;
    transition:opacity 220ms var(--ease);
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
  .card:hover::after{opacity:1;}
  .card h3{font-size:19px;font-weight:600;line-height:1.45;margin-bottom:12px;}
  .card p{font-size:14.5px;color:var(--muted);}

  .dot-list{margin:16px 0 20px;}
  .dot-list li{
    position:relative;padding-left:20px;margin-bottom:10px;
    font-size:14.5px;line-height:1.7;color:var(--muted);
  }
  .dot-list li::before{
    content:'';position:absolute;left:0;top:.68em;width:7px;height:7px;border-radius:50%;
    background:var(--grad-main);
  }

  /* ============ Hero ============ */
  .hero{position:relative;overflow:hidden;background:var(--sky-night);color:#fff;padding:84px 0 96px;isolation:isolate;}
  .hero::before{
    content:'';position:absolute;inset:0;z-index:0;opacity:.13;
    background-image:radial-gradient(rgba(255,255,255,.7) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .hero-glow{position:absolute;border-radius:50%;filter:blur(120px);z-index:0;pointer-events:none;}
  .hero-glow-a{width:520px;height:520px;background:#6C4CF1;opacity:.34;top:-180px;left:-140px;}
  .hero-glow-b{width:460px;height:460px;background:#2ED3C6;opacity:.24;bottom:-200px;right:-120px;}
  .hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;margin-bottom:22px;
    padding:7px 16px;border-radius:var(--radius-btn);font-size:13px;letter-spacing:.02em;
    color:rgba(255,255,255,.9);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.22);
  }
  .hero-badge::before{
    content:'';width:6px;height:6px;border-radius:50%;background:var(--aurora);
    box-shadow:0 0 8px var(--aurora);
  }
  .hero h1{
    font-size:clamp(30px,4.4vw,50px);line-height:1.25;font-weight:700;
    color:#fff;margin-bottom:20px;letter-spacing:-.02em;
  }
  .hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);max-width:540px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 34px;}
  .hero-trust{
    display:flex;flex-wrap:wrap;gap:38px;padding-top:26px;
    border-top:1px solid rgba(255,255,255,.12);
  }
  .hero-trust li{display:flex;flex-direction:column;gap:2px;}
  .hero-trust strong{
    font-size:24px;font-weight:700;line-height:1.2;color:var(--aurora);
    font-variant-numeric:tabular-nums;
  }
  .hero-trust li:nth-child(2) strong{color:var(--star-amber);}
  .hero-trust span{font-size:13px;color:rgba(255,255,255,.62);}
  .hero-media{position:relative;border-radius:28px;overflow:hidden;aspect-ratio:4/3;}
  .hero-media img{width:100%;height:100%;object-fit:cover;}
  .hero-media-mask{
    position:absolute;inset:0;
    background:linear-gradient(150deg,rgba(108,76,241,.42) 0%,rgba(46,211,198,.26) 58%,rgba(23,18,51,.42) 100%);
  }

  /* ============ 板块通用 ============ */
  .section{padding:96px 0;}
  .section-head{max-width:760px;margin-bottom:48px;}
  .section-head-row{
    max-width:none;display:flex;align-items:flex-end;justify-content:space-between;
    gap:24px;flex-wrap:wrap;
  }
  .section-head-row > div{max-width:640px;}
  .eyebrow{
    display:inline-block;margin-bottom:16px;padding:5px 14px;border-radius:var(--radius-btn);
    background:var(--brand-soft);color:var(--brand-600);
    font-size:13px;font-weight:600;letter-spacing:.04em;
  }
  .section-head h2{
    position:relative;padding-left:16px;font-size:clamp(24px,3vw,36px);line-height:1.3;
  }
  .section-head h2::before{
    content:'';position:absolute;left:0;top:.16em;bottom:.16em;width:5px;border-radius:3px;
    background:var(--grad-main);
  }
  .section-head p{margin-top:16px;font-size:16px;color:var(--muted);}

  /* ============ 痛点区 ============ */
  .pain-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start;}
  .pain-item{padding:22px 0;border-bottom:1px solid var(--line);}
  .pain-item:first-child{padding-top:0;}
  .pain-no{
    display:inline-flex;align-items:center;justify-content:center;
    width:40px;height:40px;margin-bottom:12px;border-radius:12px;
    background:var(--brand-soft);color:var(--brand-600);
    font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .pain-item h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:8px;}
  .pain-item p{font-size:14.5px;color:var(--muted);margin:0;}
  .pain-card{padding:24px;}
  .pain-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);margin-bottom:22px;}

  /* ============ Bento 方案卡 ============ */
  .bento{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .bento-lg{grid-column:span 2;}
  .bento-lg img.cover{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);margin-bottom:22px;}
  .bento-wide{grid-column:span 2;display:grid;grid-template-columns:1.05fr .95fr;padding:0;overflow:hidden;}
  .bento-wide-text{padding:32px 28px;display:flex;flex-direction:column;justify-content:center;}
  .bento-wide-media{min-height:260px;}
  .bento-wide-media img{width:100%;height:100%;object-fit:cover;}
  .icon-badge{
    width:46px;height:46px;border-radius:14px;margin-bottom:18px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-600);
    font-size:19px;font-weight:700;
  }

  /* ============ 数据带 ============ */
  .stats-band{
    position:relative;overflow:hidden;border-radius:28px;padding:56px;
    background:var(--sky-night);color:#fff;isolation:isolate;
  }
  .stats-band::before{
    content:'';position:absolute;inset:0;z-index:0;opacity:.12;
    background-image:radial-gradient(rgba(255,255,255,.7) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .stats-band::after{
    content:'';position:absolute;width:420px;height:420px;border-radius:50%;
    background:#6C4CF1;filter:blur(120px);opacity:.3;top:-160px;right:-120px;z-index:0;
  }
  .stats-head{position:relative;z-index:1;max-width:660px;}
  .stats-head h2{color:#fff;font-size:clamp(22px,2.6vw,32px);}
  .stats-head p{margin-top:14px;font-size:14.5px;color:rgba(255,255,255,.66);}
  .stats-grid{
    position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);
    gap:20px;margin:38px 0 34px;
  }
  .stat-chip{
    padding:24px;border-radius:20px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);
  }
  .stat-chip strong{
    display:block;font-size:clamp(30px,3.4vw,42px);line-height:1.1;font-weight:700;
    color:var(--aurora);font-variant-numeric:tabular-nums;
  }
  .stat-chip:nth-child(2) strong{color:var(--star-amber);}
  .stat-chip .unit{font-size:.52em;margin-left:2px;}
  .stat-chip p{margin:12px 0 0;font-size:13px;line-height:1.6;color:rgba(255,255,255,.66);}
  .stats-actions{position:relative;z-index:1;}

  /* ============ 最新信息 ============ */
  .news-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:start;}
  .news-feature{display:block;}
  .news-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);margin-bottom:22px;}
  .news-feature h3{font-size:20px;font-weight:600;line-height:1.5;margin-bottom:10px;}
  .news-feature p{font-size:14.5px;color:var(--muted);margin-bottom:16px;}
  .news-list{display:flex;flex-direction:column;gap:16px;}
  .news-item{
    position:relative;display:block;padding:20px 22px;border-radius:18px;
    background:#fff;border:1px solid var(--line);
    transition:background 220ms var(--ease),transform 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .news-item::before{
    content:'';position:absolute;left:0;top:18%;bottom:18%;width:3px;
    border-radius:0 3px 3px 0;background:var(--grad-main);opacity:0;
    transition:opacity 220ms var(--ease);
  }
  .news-item:hover{background:var(--bg);transform:translateY(-2px);box-shadow:var(--shadow-card);}
  .news-item:hover::before{opacity:1;}
  .news-item h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:8px;}
  .news-item p{
    font-size:14px;color:var(--muted);margin-bottom:12px;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
  .empty-state{
    grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:16px;padding:60px 24px;text-align:center;
    background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);
  }
  .empty-state .dot-star{
    width:42px;height:42px;border-radius:50%;background:var(--grad-main);opacity:.9;
  }
  .empty-state p{font-size:14.5px;color:var(--muted);margin:0;}

  /* ============ FAQ ============ */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
    transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
  }
  .faq-item summary{
    position:relative;list-style:none;cursor:pointer;
    padding:20px 58px 20px 24px;font-size:16px;font-weight:600;line-height:1.6;
    transition:background 220ms var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:'';position:absolute;right:26px;top:50%;width:9px;height:9px;
    border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
    transform:translateY(-70%) rotate(45deg);
    transition:transform 220ms var(--ease),border-color 220ms var(--ease);
  }
  .faq-item[open]{box-shadow:var(--shadow-card);}
  .faq-item[open] summary{background:#FBF9FF;}
  .faq-item[open] summary::before{
    content:'';position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad-main);
  }
  .faq-item[open] summary::after{
    transform:translateY(-30%) rotate(-135deg);border-color:var(--brand-600);
  }
  .faq-body{padding:4px 24px 22px;font-size:15px;line-height:1.8;color:var(--muted);}

  /* ============ CTA 带 ============ */
  .cta-band{
    position:relative;overflow:hidden;border-radius:28px;padding:60px 48px;
    background:var(--grad-main);color:#fff;text-align:center;isolation:isolate;
  }
  .cta-band::before{
    content:'';position:absolute;inset:0;z-index:0;opacity:.16;
    background-image:radial-gradient(rgba(255,255,255,.85) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .cta-band > *{position:relative;z-index:1;}
  .cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
  .cta-band p{max-width:660px;margin:0 auto 30px;font-size:16px;color:rgba(255,255,255,.88);}

  /* ============ 隐私说明条 ============ */
  .privacy-note{
    max-width:1200px;margin:26px auto 0;padding:0 32px;
    font-size:12.5px;line-height:1.7;color:var(--muted);
  }

  /* ============ 页脚 ============ */
  .footer{
    position:relative;overflow:hidden;margin-top:96px;padding:72px 0 0;
    background:var(--sky-night);color:rgba(255,255,255,.7);isolation:isolate;
  }
  .footer::before{
    content:'';position:absolute;inset:0;z-index:0;opacity:.1;
    background-image:radial-gradient(rgba(255,255,255,.7) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .footer::after{
    content:'';position:absolute;width:420px;height:420px;border-radius:50%;
    background:#2ED3C6;filter:blur(120px);opacity:.18;bottom:-220px;left:-140px;z-index:0;
  }
  .footer > .container{position:relative;z-index:1;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1.3fr;gap:40px;}
  .footer h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px;line-height:1.5;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
  .footer-brand span{color:#fff;font-size:16.5px;font-weight:700;}
  .footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);}
  .footer-links li{margin-bottom:12px;}
  .footer-links a{font-size:14px;color:rgba(255,255,255,.68);transition:color 220ms var(--ease);}
  .footer-links a:hover{color:var(--aurora);}
  .footer-contact li{
    font-size:14px;line-height:1.7;color:rgba(255,255,255,.68);margin-bottom:12px;
  }
  .footer-contact strong{color:#fff;font-weight:600;}
  .footer-bottom{
    position:relative;z-index:1;margin-top:56px;padding:22px 0;
    border-top:1px solid rgba(255,255,255,.1);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
    font-size:12.5px;color:rgba(255,255,255,.48);
  }

  /* ============ 表单弹层 ============ */
  .modal-mask{
    position:fixed;inset:0;z-index:100;padding:24px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(15,11,36,.62);backdrop-filter:blur(3px);
    opacity:0;visibility:hidden;
    transition:opacity 260ms var(--ease),visibility 260ms var(--ease);
  }
  .modal-mask.is-open{opacity:1;visibility:visible;}
  .modal-card{
    position:relative;width:100%;max-width:545px;max-height:90vh;overflow-y:auto;
    background:#fff;border-radius:var(--radius-card);padding:38px 36px 34px;
    box-shadow:0 30px 80px rgba(15,11,36,.42);
    transform:translateY(18px);transition:transform 260ms var(--ease);
  }
  .modal-mask.is-open .modal-card{transform:translateY(0);}
  .modal-card::before{
    content:'';position:absolute;top:0;left:0;right:0;height:6px;
    border-radius:var(--radius-card) var(--radius-card) 0 0;background:var(--grad-main);
  }
  .modal-card h3{font-size:21px;font-weight:700;margin-bottom:8px;}
  .modal-card > p{font-size:14px;color:var(--muted);margin-bottom:24px;}
  .modal-close{
    position:absolute;top:20px;right:20px;width:36px;height:36px;border:0;border-radius:10px;
    display:inline-flex;align-items:center;justify-content:center;
    background:#F4F1FC;color:var(--muted);font-size:17px;cursor:pointer;
    transition:background 200ms var(--ease),color 200ms var(--ease);
  }
  .modal-close:hover{background:var(--brand-soft);color:var(--brand-600);}

  .field{margin-bottom:16px;}
  .field label{display:block;margin-bottom:8px;font-size:13.5px;font-weight:600;color:var(--text);}
  .field input,.field select,.field textarea{
    width:100%;height:48px;padding:0 16px;border-radius:14px;
    border:1px solid var(--line);background:#FBF9FF;
    font-size:14.5px;line-height:1.5;
    transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease),background 200ms var(--ease);
  }
  .field textarea{height:auto;min-height:112px;padding:14px 16px;line-height:1.7;resize:vertical;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand-500);background:#fff;
    box-shadow:0 0 0 4px rgba(108,76,241,.13);
  }
  .field select{
    appearance:none;
    background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
    background-position:calc(100% - 22px) 21px,calc(100% - 16px) 21px;
    background-size:6px 6px,6px 6px;background-repeat:no-repeat;
  }
  .check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 22px;}
  .check-row input{width:18px;height:18px;margin-top:3px;flex:none;accent-color:var(--brand-500);}
  .check-row label{font-size:13px;line-height:1.7;color:var(--muted);font-weight:400;}
  .form-tip{font-size:12.5px;line-height:1.7;color:var(--muted);margin-top:14px;}
  .form-ok{
    display:none;margin-bottom:18px;padding:12px 16px;border-radius:14px;
    background:#E9FBF8;color:#16756C;font-size:13.5px;
  }
  .form-ok.is-show{display:block;}
  .error-text{display:none;margin-top:6px;font-size:13px;color:var(--star-amber);}
  .error-text.is-show{display:block;}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .hero h1{font-size:clamp(30px,4vw,44px);}
  }
  @media (max-width:1023px){
    .sidebar{
      width:82%;max-width:320px;
      transform:translateX(-100%);
      transition:transform 280ms var(--ease);
      box-shadow:0 0 60px rgba(0,0,0,.45);
    }
    .sidebar.is-open{transform:translateX(0);}
    .app-main{margin-left:0;padding-top:60px;}
    .mobile-bar{display:flex;}
    .hero{padding:64px 0 72px;}
    .hero-inner{grid-template-columns:1fr;gap:38px;}
    .hero-media{aspect-ratio:16/10;}
    .pain-layout{grid-template-columns:1fr;gap:32px;}
    .bento{grid-template-columns:repeat(2,1fr);}
    .bento-lg,.bento-wide{grid-column:span 2;}
    .stats-band{padding:44px 36px;}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .news-layout{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px;}
    .section{padding:72px 0;}
  }
  @media (max-width:767px){
    .container{padding:0 20px;}
    .privacy-note{padding:0 20px;}
    .section{padding:56px 0;}
    .section-head{margin-bottom:34px;}
    .section-head-row{align-items:flex-start;flex-direction:column;}
    .bento{grid-template-columns:1fr;gap:18px;}
    .bento-lg,.bento-wide{grid-column:span 1;}
    .bento-wide{grid-template-columns:1fr;}
    .bento-wide-media{min-height:200px;order:-1;}
    .stats-band{padding:32px 22px;border-radius:24px;}
    .stats-grid{grid-template-columns:1fr 1fr;gap:14px;margin:28px 0 26px;}
    .stat-chip{padding:18px;}
    .cta-band{padding:42px 24px;border-radius:24px;}
    .footer{padding:56px 0 0;margin-top:64px;}
    .footer-grid{grid-template-columns:1fr;gap:30px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .hero-actions{gap:12px;}
    .hero-actions .btn{flex:1 1 auto;justify-content:center;}
    .modal-mask{align-items:flex-end;padding:0;}
    .modal-card{
      max-width:100%;border-radius:24px 24px 0 0;padding:32px 22px 34px;
      transform:translateY(40px);
    }
    .modal-mask.is-open .modal-card{transform:translateY(0);}
  }
  @media (max-width:520px){
    .hero h1{font-size:27px;}
    .hero-trust{gap:24px;}
    .hero-trust strong{font-size:21px;}
    .stats-grid{grid-template-columns:1fr;}
    .faq-item summary{font-size:15px;padding:18px 52px 18px 20px;}
    .faq-body{padding:2px 20px 20px;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
    }
    .card:hover,.news-item:hover,.btn:hover{transform:none;}
    .hero-glow{display:none;}
  }

/* roulang page: article */
:root{
  --sky-night:#171233;
  --sky-deep:#241B4F;
  --brand-500:#6C4CF1;
  --brand-600:#5A38E0;
  --brand-soft:#EFEBFF;
  --aurora:#2ED3C6;
  --star-amber:#FF9F45;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --line:#E7E2F5;
  --text:#1A1633;
  --muted:#5F5A7A;
  --radius-card:24px;
  --radius-img:20px;
  --radius-btn:999px;
  --shadow-card:0 8px 28px rgba(28,20,58,.08);
  --shadow-hover:0 16px 40px rgba(28,20,58,.14);
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A855F7 55%,#2ED3C6 100%);
  --grad-amber:linear-gradient(120deg,#FF9F45,#FF7A59);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar-w:248px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--aurora);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 品牌标识 ---------- */
.logo-mark{
  width:26px;height:26px;flex:0 0 26px;border-radius:9px;
  background:var(--grad-brand);
  position:relative;display:inline-block;
}
.logo-mark::after{
  content:"";position:absolute;inset:7px;
  background:radial-gradient(circle,#fff 1.4px,transparent 1.6px) 0 0/8px 8px;
  opacity:.9;border-radius:4px;
}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
  padding:26px 18px 22px;z-index:60;overflow-y:auto;
  transition:transform .28s var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px}
.brand-text{
  font-size:19px;font-weight:700;letter-spacing:.3px;
  background:linear-gradient(100deg,#4C31C9,#6C4CF1 60%,#2ED3C6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.sidebar-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px}
.nav-item{
  position:relative;display:block;padding:11px 14px 11px 18px;
  border-radius:14px;font-size:15px;color:var(--muted);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);
  width:3px;height:0;border-radius:3px;background:var(--grad-brand);
  transition:height .22s var(--ease);
}
.nav-item:hover{background:#F1EDFF;color:var(--brand-600)}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand-600);font-weight:600}
.nav-item.is-active::before{height:20px}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding:0 4px}
.sidebar-note{font-size:12.5px;line-height:1.6;color:var(--muted);padding:0 4px}
.sidebar-close{
  display:none;position:absolute;top:14px;right:12px;
  width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
  background:#fff;color:var(--muted);cursor:pointer;line-height:1;
  align-items:center;justify-content:center;font-size:22px;
}
.sidebar-close:hover{background:#F1EDFF;color:var(--brand-600)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(23,18,51,.5);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:50;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);align-items:center;justify-content:space-between;
  padding:0 20px;
}
.hamburger{
  width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
  background:#fff;cursor:pointer;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-600)}
.hamburger:hover{background:#F1EDFF}

/* ---------- 主体 ---------- */
.main{margin-left:var(--sidebar-w);min-height:100vh}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(108,76,241,.28)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(108,76,241,.34)}
.btn-amber{background:var(--grad-amber);color:#fff;box-shadow:0 8px 20px rgba(255,122,89,.28)}
.btn-amber:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--brand-600);border-color:var(--brand-500)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-block{width:100%}
.btn:active{transform:scale(.99)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-600);
  font-size:14px;font-weight:600;
}
.link-arrow span{transition:transform .2s var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}

/* ---------- 通用标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-soft);color:var(--brand-600);
  font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--radius-btn);
}
.chip-ghost{background:rgba(108,76,241,.08);color:var(--muted);font-weight:500}
.grad-divider{height:2px;width:100%;border-radius:2px;background:var(--grad-brand);opacity:.85;margin:26px 0 34px}

/* ---------- 页头 ---------- */
.page-banner{
  position:relative;overflow:hidden;background:var(--sky-night);color:#fff;
  padding:52px 0 46px;border-radius:0 0 28px 28px;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1.2px,transparent 1.2px);
  background-size:22px 22px;
}
.page-banner::after{
  content:"";position:absolute;inset:-30% -10%;
  background:
    radial-gradient(circle at 22% 30%,rgba(108,76,241,.35),transparent 60%),
    radial-gradient(circle at 78% 70%,rgba(46,211,198,.28),transparent 62%);
  filter:blur(120px);pointer-events:none;
}
.page-banner .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#B7B1D6}
.breadcrumb a{color:#D6D1EF}
.breadcrumb a:hover{color:#fff}
.crumb-current{color:#8F89B3;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.banner-eyebrow{
  margin-top:20px;font-size:14px;color:#CFCAE6;letter-spacing:.4px;
}
.banner-title{
  margin-top:10px;font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700;
}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:64px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.article-head h1{font-size:clamp(26px,3.4vw,42px);line-height:1.3;font-weight:700;letter-spacing:.2px}
.post-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:18px;font-size:13.5px;color:var(--muted);
}
.post-meta .dot{width:4px;height:4px;border-radius:50%;background:#C9C3E4}
.article-cover{
  margin:8px 0 34px;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.article-cover img{width:100%;aspect-ratio:16/10;object-fit:cover}
.article-cover figcaption{font-size:12.5px;color:var(--muted);padding:12px 18px;background:#fff}

/* ---------- 正文排版 ---------- */
.prose{max-width:820px;font-size:17px;line-height:1.95;color:#2A2547}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.1em}
.prose h2{
  position:relative;font-size:clamp(21px,2.2vw,26px);line-height:1.4;font-weight:700;
  color:var(--text);margin:2em 0 .85em;padding-left:16px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.2em;width:4px;height:1.05em;
  border-radius:3px;background:var(--grad-brand);
}
.prose h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--text);margin:1.4em 0 .6em}
.prose h4{font-size:17px;font-weight:600;margin:1.2em 0 .5em}
.prose ul,.prose ol{margin:0 0 1.15em;padding-left:4px}
.prose li{position:relative;padding-left:20px;margin:0 0 .55em}
.prose li::before{
  content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,#6C4CF1,#2ED3C6);
}
.prose ol{counter-reset:item}
.prose ol li{counter-increment:item}
.prose a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--brand-500)}
.prose img{border-radius:16px;margin:1.5em 0;border:1px solid var(--line)}
.prose blockquote{
  position:relative;margin:1.6em 0;padding:20px 22px 20px 26px;
  background:#F3F0FF;border-radius:6px 16px 16px 6px;color:#3A3363;
}
.prose blockquote::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:3px;
  background:var(--grad-brand);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{
  width:100%;border-collapse:separate;border-spacing:0;font-size:15px;
  margin:1.5em 0;border:1px solid var(--line);border-radius:16px;overflow:hidden;
}
.prose th,.prose td{padding:11px 16px;border-bottom:1px solid var(--line);text-align:left}
.prose th{background:#F7F5FC;font-weight:600;color:var(--text)}
.prose tr:last-child td{border-bottom:0}
.prose hr{border:0;height:1px;background:var(--line);margin:2em 0}
.prose strong{font-weight:700;color:var(--text)}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 28px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);
}
.empty-star{
  width:44px;height:44px;border-radius:14px;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
}
.empty-star::after{
  content:"";width:14px;height:14px;border-radius:50%;
  background:var(--grad-brand);
}
.empty-state h3{font-size:18px;font-weight:600}
.empty-state p{font-size:14.5px;color:var(--muted);max-width:420px}

/* ---------- 侧栏卡片 ---------- */
.article-side{position:sticky;top:28px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:22px;box-shadow:var(--shadow-card);
}
.side-title{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text)}
.side-links li + li{margin-top:4px}
.side-links a{
  display:block;padding:9px 12px;border-radius:12px;font-size:14.5px;color:var(--muted);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.side-links a:hover{background:#F7F5FC;color:var(--brand-600);box-shadow:inset 3px 0 0 var(--brand-500)}
.side-list li + li{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.side-list a{display:block;font-size:14.5px;color:var(--text);line-height:1.6}
.side-list a:hover{color:var(--brand-600)}
.side-list em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);margin-top:4px}
.side-cta{
  border-radius:20px;padding:22px;color:#fff;position:relative;overflow:hidden;
  background:var(--sky-night);
}
.side-cta::after{
  content:"";position:absolute;inset:-40%;
  background:radial-gradient(circle at 30% 30%,rgba(108,76,241,.45),transparent 60%),
             radial-gradient(circle at 75% 75%,rgba(46,211,198,.35),transparent 60%);
  filter:blur(60px);
}
.side-cta p{position:relative;z-index:2;font-size:14.5px;color:#D6D1EF;margin-bottom:14px}
.side-cta .btn{position:relative;z-index:2}

/* ---------- 相关推荐 ---------- */
.section{margin-top:80px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35;position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:5px;height:1em;border-radius:3px;background:var(--grad-brand);
}
.section-head p{font-size:14.5px;color:var(--muted);margin-top:8px}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0;overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#C9BBFF}
.card-img{overflow:hidden;border-bottom:1px solid var(--line)}
.card-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-img img{transform:scale(1.03)}
.card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.5}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.card-body .link-arrow{margin-top:auto}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-top:88px;border-radius:28px;
  background:var(--grad-brand);color:#fff;padding:52px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.18) 1.2px,transparent 1.2px);
  background-size:22px 22px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.35}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.9);max-width:620px}

/* ---------- 隐私条 ---------- */
.privacy-bar{
  margin-top:34px;padding:16px 20px;border-radius:16px;background:#fff;
  border:1px dashed var(--line);font-size:12.5px;line-height:1.7;color:var(--muted);
}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;overflow:hidden;margin-top:64px;background:var(--sky-night);
  color:#CFCAE6;padding:72px 0 26px;
}
.footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.16) 1.2px,transparent 1.2px);
  background-size:22px 22px;opacity:.9;
}
.footer::after{
  content:"";position:absolute;inset:-30% -10%;
  background:
    radial-gradient(circle at 18% 20%,rgba(108,76,241,.3),transparent 60%),
    radial-gradient(circle at 82% 80%,rgba(46,211,198,.22),transparent 62%);
  filter:blur(120px);
}
.footer .container{position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:16px}
.footer p{font-size:14px;line-height:1.8;color:#B9B3D8}
.footer h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-links li + li{margin-top:10px}
.footer-links a{font-size:14px;color:#B9B3D8;transition:color .2s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-contact li{font-size:14px;color:#B9B3D8;line-height:1.8}
.footer-contact li + li{margin-top:10px}
.footer-contact strong{color:#E4E0F7;font-weight:600}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:12.5px;color:#8F89B3;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-layout{gap:40px}
}
@media (max-width:1023px){
  .sidebar{transform:translateX(-100%);box-shadow:0 20px 60px rgba(23,18,51,.28);width:82%;max-width:320px}
  .sidebar.is-open{transform:translateX(0)}
  .sidebar-close{display:flex}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:60px}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{display:none}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .container{padding:0 32px}
}
@media (max-width:767px){
  .article-wrap{padding:44px 0 64px}
  .page-banner{padding:40px 0 34px;border-radius:0 0 22px 22px}
  .section{margin-top:56px}
  .cta-band{padding:36px 26px;border-radius:22px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:22px}
  .crumb-current{white-space:normal}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .prose{font-size:16.5px;line-height:1.9}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  .card:hover,.btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
    --sky-night:#171233;
    --sky-deep:#241B4F;
    --brand-500:#6C4CF1;
    --brand-600:#5A38E0;
    --brand-soft:#EFEBFF;
    --aurora:#2ED3C6;
    --star-amber:#FF9F45;
    --bg:#F7F5FC;
    --surface:#FFFFFF;
    --line:#E7E2F5;
    --text:#1A1633;
    --muted:#5F5A7A;
    --radius-card:24px;
    --radius-img:20px;
    --radius-btn:999px;
    --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A855F7 55%,#2ED3C6 100%);
    --grad-cta:linear-gradient(120deg,#FF9F45 0%,#FF7A59 100%);
    --shadow-card:0 8px 28px rgba(28,20,58,.08);
    --shadow-card-hover:0 16px 40px rgba(28,20,58,.14);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.85;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  ul,ol{margin:0;padding:0;list-style:none}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
  .num{font-variant-numeric:tabular-nums}

  /* ============ 布局骨架 ============ */
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  .main{margin-left:248px;min-height:100vh}
  .section{margin-top:96px}
  .section--tight{margin-top:72px}

  /* ============ 侧栏导航 ============ */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:248px;z-index:60;
    background:var(--sky-night);
    border-right:1px solid rgba(255,255,255,.08);
    display:flex;flex-direction:column;
    padding:26px 18px 22px;
    overflow-y:auto;
  }
  .sidebar-brand{display:flex;align-items:center;gap:10px;padding:0 8px 22px;color:#fff;font-size:18px;font-weight:700;letter-spacing:.5px}
  .logo-mark{
    width:16px;height:16px;border-radius:50%;flex:0 0 auto;
    background:var(--grad-brand);
    box-shadow:0 0 0 4px rgba(108,76,241,.22);
    position:relative;
  }
  .logo-mark::after{
    content:"";position:absolute;right:-6px;top:-4px;width:5px;height:5px;border-radius:50%;
    background:var(--star-amber);
  }
  .sidebar-nav{display:flex;flex-direction:column;gap:6px;margin-top:6px}
  .nav-item{
    position:relative;display:flex;align-items:center;
    padding:11px 14px 11px 16px;border-radius:12px;
    font-size:15px;color:#C6C1E2;transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
  }
  .nav-item:hover{background:rgba(108,76,241,.20);color:#fff;transform:translateX(2px)}
  .nav-item:focus-visible{outline:2px solid var(--aurora);outline-offset:2px}
  .nav-item.is-active{background:var(--brand-soft);color:var(--brand-600);font-weight:600}
  .nav-item.is-active::before{
    content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
    background:linear-gradient(180deg,var(--brand-500),var(--aurora));
  }
  .sidebar-foot{margin-top:auto;padding-top:22px;border-top:1px solid rgba(255,255,255,.09)}
  .sidebar-cta{
    display:flex;align-items:center;justify-content:center;gap:8px;width:100%;
    padding:12px 16px;border:0;border-radius:var(--radius-btn);cursor:pointer;
    background:var(--grad-brand);color:#fff;font-size:15px;font-weight:600;
    box-shadow:0 8px 20px rgba(108,76,241,.28);
    transition:filter 220ms var(--ease),transform 220ms var(--ease);
  }
  .sidebar-cta:hover{filter:brightness(1.06);transform:translateY(-1px)}
  .sidebar-cta:active{transform:scale(.99)}
  .sidebar-cta:focus-visible{outline:2px solid var(--aurora);outline-offset:2px}
  .sidebar-meta{margin-top:14px;font-size:12.5px;line-height:1.7;color:#8F89B2}
  .sidebar-meta strong{display:block;color:#C6C1E2;font-weight:500}

  /* ============ 移动端顶栏与抽屉 ============ */
  .mobile-bar{
    display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
    align-items:center;justify-content:space-between;
    padding:0 20px;background:rgba(23,18,51,.96);
    border-bottom:1px solid rgba(255,255,255,.08);
    backdrop-filter:blur(10px);
  }
  .mobile-bar .sidebar-brand{padding:0;font-size:16.5px}
  .burger{
    width:44px;height:44px;display:flex;align-items:center;justify-content:center;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
    border-radius:12px;color:#fff;font-size:17px;cursor:pointer;
  }
  .burger:focus-visible{outline:2px solid var(--aurora);outline-offset:2px}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(23,18,51,.58);z-index:80;
    opacity:0;pointer-events:none;transition:opacity 280ms var(--ease);
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;right:0;height:100%;width:82%;max-width:320px;z-index:90;
    background:var(--sky-night);color:#fff;padding:22px 20px;
    transform:translateX(102%);transition:transform 280ms var(--ease);
    overflow-y:auto;display:flex;flex-direction:column;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.16);
    background:rgba(255,255,255,.06);color:#fff;font-size:18px;cursor:pointer;
  }
  .drawer-close:focus-visible{outline:2px solid var(--aurora);outline-offset:2px}

  /* ============ 页头 Banner ============ */
  .page-hero{
    position:relative;overflow:hidden;color:#fff;
    padding:54px 0 62px;border-radius:0 0 28px 28px;
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(115deg,rgba(23,18,51,.94) 0%,rgba(36,27,79,.82) 46%,rgba(108,76,241,.72) 100%),
               url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;opacity:.16;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.85) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .glow{position:absolute;border-radius:50%;filter:blur(120px);pointer-events:none}
  .glow-a{width:360px;height:360px;left:-90px;top:-120px;background:rgba(108,76,241,.34)}
  .glow-b{width:320px;height:320px;right:-60px;bottom:-140px;background:rgba(46,211,198,.28)}
  .page-hero .container{position:relative;z-index:2}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:18px}
  .crumb a{color:rgba(255,255,255,.85)}
  .crumb a:hover{color:#fff;text-decoration:underline}
  .crumb span.sep{color:rgba(255,255,255,.45)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:var(--radius-btn);
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
    font-size:13px;color:#EDE9FF;margin-bottom:16px;
  }
  .eyebrow i{color:var(--star-amber);font-size:12px}
  .page-title{
    font-size:clamp(30px,4.4vw,48px);line-height:1.25;font-weight:700;
    margin:0 0 16px;letter-spacing:.5px;color:#fff;
  }
  .page-sub{max-width:760px;margin:0;font-size:16px;line-height:1.85;color:rgba(255,255,255,.82)}

  /* ============ 通用板块标题 ============ */
  .sec-head{margin-bottom:36px;max-width:860px}
  .sec-title{
    display:flex;align-items:center;gap:14px;
    font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700;margin:0 0 14px;
  }
  .sec-title::before{
    content:"";flex:0 0 auto;width:6px;height:30px;border-radius:6px;background:var(--grad-brand);
  }
  .sec-desc{margin:0;font-size:16px;line-height:1.85;color:var(--muted)}

  /* ============ 图文交错 ============ */
  .zig{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
  .zig + .zig{margin-top:80px}
  .zig.flip .zig-media{order:2}
  .zig-media{position:relative}
  .media-img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:var(--radius-img);
    box-shadow:0 16px 40px rgba(28,20,58,.14);
  }
  .zig-media::after{
    content:"";position:absolute;right:-14px;bottom:-14px;width:96px;height:96px;border-radius:26px;
    background:var(--grad-brand);opacity:.14;z-index:-1;
  }
  .zig-body h3{font-size:20px;line-height:1.4;font-weight:600;margin:0 0 14px}
  .zig-body p{margin:0 0 1.1em;color:#3B3557}
  .zig-body p:last-child{margin-bottom:0}
  .star-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
  .star-list li{position:relative;padding-left:24px;font-size:15px;color:#3B3557}
  .star-list li::before{
    content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:50%;
    background:var(--grad-brand);
  }
  .step-no{
    display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;
    font-size:13px;color:var(--brand-600);font-weight:600;letter-spacing:1px;
  }
  .step-no::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad-brand)}

  /* ============ 标签带 ============ */
  .tagband{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:28px;box-shadow:var(--shadow-card);
    display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center;
  }
  .tagband h3{margin:0 0 10px;font-size:20px;font-weight:600;line-height:1.4}
  .tagband p{margin:0;font-size:15px;color:var(--muted)}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
  .tag{
    display:inline-flex;align-items:center;gap:6px;
    padding:8px 16px;border-radius:var(--radius-btn);
    background:var(--brand-soft);color:var(--brand-600);font-size:13.5px;
    transition:background 220ms var(--ease),transform 220ms var(--ease);
  }
  .tag:hover{background:#E3DCFF;transform:translateY(-2px)}
  .tag i{font-size:11px;color:var(--aurora)}

  /* ============ 定义列表区 ============ */
  .def-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:12px 32px;box-shadow:var(--shadow-card)}
  .def-list{border-top:1px solid var(--line)}
  .def-list:first-child{border-top:0}
  .def-row{
    display:grid;grid-template-columns:220px 1fr;gap:28px;
    padding:24px 0;border-bottom:1px solid var(--line);
  }
  .def-list:last-child .def-row{border-bottom:0}
  .def-row dt{
    font-size:16px;font-weight:600;color:var(--brand-600);
    display:flex;align-items:center;gap:10px;
  }
  .def-row dt i{color:var(--aurora);font-size:14px}
  .def-row dd{margin:0;font-size:15.5px;color:#3B3557}

  /* ============ FAQ ============ */
  .faq-item{
    position:relative;background:var(--surface);border:1px solid var(--line);
    border-radius:18px;overflow:hidden;box-shadow:0 4px 16px rgba(28,20,58,.05);
    transition:box-shadow 220ms var(--ease),border-color 220ms var(--ease);
  }
  .faq-item + .faq-item{margin-top:14px}
  .faq-item:hover{box-shadow:var(--shadow-card)}
  .faq-item[open]{border-color:#D9D0FA;box-shadow:var(--shadow-card)}
  .faq-item[open]::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:4px;
    background:var(--grad-brand);
  }
  .faq-item summary{
    cursor:pointer;list-style:none;padding:18px 24px;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    font-size:16px;font-weight:600;line-height:1.6;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:focus-visible{outline:2px solid var(--aurora);outline-offset:-4px}
  .faq-item summary .faq-ico{
    flex:0 0 auto;width:26px;height:26px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-600);font-size:12px;
    transition:transform 220ms var(--ease),background 220ms var(--ease);
  }
  .faq-item[open] summary .faq-ico{background:var(--grad-brand);color:#fff;transform:rotate(180deg)}
  .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.8;color:#3B3557}

  /* ============ CTA 带 ============ */
  .cta-band{
    position:relative;overflow:hidden;border-radius:28px;
    background:var(--grad-brand);color:#fff;
    padding:56px 48px;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;opacity:.15;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .cta-band .cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}
  .cta-band h2{margin:0 0 14px;font-size:clamp(22px,2.8vw,32px);line-height:1.3;font-weight:700}
  .cta-band p{margin:0;font-size:16px;line-height:1.8;color:rgba(255,255,255,.9)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    padding:14px 28px;border-radius:var(--radius-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:filter 220ms var(--ease),transform 220ms var(--ease),background 220ms var(--ease),box-shadow 220ms var(--ease);
  }
  .btn:active{transform:scale(.99)}
  .btn:focus-visible{outline:2px solid var(--aurora);outline-offset:2px}
  .btn-primary{background:var(--grad-brand);color:#fff;box-shadow:0 8px 20px rgba(108,76,241,.28)}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
  .btn-cta{background:var(--grad-cta);color:#fff;box-shadow:0 10px 24px rgba(255,122,89,.32)}
  .btn-cta:hover{filter:brightness(1.06);transform:translateY(-1px)}
  .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.42)}
  .btn-ghost:hover{background:rgba(255,255,255,.24);transform:translateY(-1px)}
  .text-link{
    display:inline-flex;align-items:center;gap:8px;color:var(--brand-600);
    font-size:15px;font-weight:600;
  }
  .text-link i{transition:transform 220ms var(--ease)}
  .text-link:hover i{transform:translateX(4px)}
  .text-link:focus-visible{outline:2px solid var(--aurora);outline-offset:3px;border-radius:6px}

  /* ============ 隐私条 ============ */
  .privacy-note{
    margin-top:22px;font-size:12.5px;line-height:1.6;color:var(--muted);
    display:flex;gap:10px;align-items:flex-start;
  }
  .privacy-note i{color:var(--brand-500);margin-top:3px;font-size:12px}

  /* ============ 表单弹层 ============ */
  .lead-modal{position:fixed;inset:0;z-index:120;display:none}
  .lead-modal.is-open{display:block}
  .lead-modal__mask{position:absolute;inset:0;background:rgba(23,18,51,.62);backdrop-filter:blur(3px)}
  .lead-modal__card{
    position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
    width:min(540px,calc(100% - 40px));max-height:90vh;overflow-y:auto;
    background:var(--surface);border-radius:24px;padding:34px 32px 30px;
    box-shadow:0 30px 70px rgba(28,20,58,.35);
  }
  .lead-modal__bar{
    position:absolute;left:0;right:0;top:0;height:6px;border-radius:24px 24px 0 0;
    background:var(--grad-brand);
  }
  .lead-modal__close{
    position:absolute;right:16px;top:16px;width:38px;height:38px;border-radius:50%;
    border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;font-size:16px;
  }
  .lead-modal__close:hover{background:var(--brand-soft);color:var(--brand-600)}
  .lead-modal__close:focus-visible{outline:2px solid var(--aurora);outline-offset:2px}
  .lead-modal h3{margin:6px 0 8px;font-size:20px;line-height:1.4;font-weight:700}
  .lead-modal__tip{margin:0 0 20px;font-size:14px;color:var(--muted)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
  .field input,.field select,.field textarea{
    width:100%;height:48px;padding:0 16px;border-radius:14px;
    border:1px solid var(--line);background:#FBFAFF;outline:none;
    transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .field textarea{height:104px;padding:12px 16px;resize:vertical;line-height:1.7}
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:var(--brand-500);box-shadow:0 0 0 4px rgba(108,76,241,.16);background:#fff;
  }
  .check-row{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);line-height:1.6}
  .check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-500);flex:0 0 auto}
  .form-err{font-size:13px;color:var(--star-amber);margin-top:8px;display:none}
  .form-err.is-show{display:block}
  .btn-block{width:100%;margin-top:20px}

  /* ============ 页脚 ============ */
  .footer{
    position:relative;overflow:hidden;margin-top:96px;
    margin-left:248px;background:var(--sky-night);color:#C6C1E2;
    padding:64px 0 26px;
  }
  .footer::after{
    content:"";position:absolute;inset:0;opacity:.14;pointer-events:none;
    background-image:radial-gradient(rgba(255,255,255,.85) 1px,transparent 1px);
    background-size:22px 22px;
  }
  .footer .container{position:relative;z-index:2}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px}
  .footer p{margin:0;font-size:14px;line-height:1.8;color:#9E98BE}
  .footer h4{margin:0 0 16px;font-size:15px;font-weight:600;color:#fff}
  .footer-links li{margin-bottom:10px}
  .footer-links a{font-size:14px;color:#B4AEDA;transition:color 200ms var(--ease),padding-left 200ms var(--ease)}
  .footer-links a:hover{color:#fff;padding-left:4px;text-decoration:underline}
  .footer-contact li{font-size:14px;line-height:1.8;margin-bottom:10px;color:#B4AEDA}
  .footer-contact strong{color:#fff;font-weight:500}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
    font-size:12.5px;color:#8A84AC;
  }

  /* ============ 响应式 ============ */
  @media (max-width:1280px){
    .container{padding:0 28px}
  }
  @media (max-width:1023px){
    .sidebar{display:none}
    .mobile-bar{display:flex}
    .main{margin-left:0;padding-top:60px}
    .footer{margin-left:0;margin-top:72px}
    .section{margin-top:72px}
    .container{padding:0 32px}
    .zig{gap:36px}
    .zig + .zig{margin-top:64px}
    .cta-band{padding:44px 34px}
    .cta-band .cta-inner{grid-template-columns:1fr}
    .cta-actions{justify-content:flex-start}
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  }
  @media (max-width:767px){
    .container{padding:0 20px}
    .zig{grid-template-columns:1fr;gap:24px}
    .zig.flip .zig-media{order:0}
    .zig-media::after{display:none}
    .def-wrap{padding:6px 20px}
    .def-row{grid-template-columns:1fr;gap:8px;padding:20px 0}
    .tagband{grid-template-columns:1fr;gap:20px;padding:24px}
    .page-hero{padding:40px 0 48px;border-radius:0 0 22px 22px}
    .footer-grid{grid-template-columns:1fr}
    .lead-modal__card{
      left:0;right:0;bottom:0;top:auto;transform:none;
      width:100%;max-height:92vh;border-radius:24px 24px 0 0;
      padding:30px 22px 26px;
      animation:slideUp 280ms var(--ease);
    }
    .lead-modal__bar{border-radius:24px 24px 0 0}
  }
  @media (max-width:520px){
    .section{margin-top:56px}
    .cta-band{padding:34px 22px;border-radius:22px}
    .btn{width:100%}
    .cta-actions{width:100%}
  }
  @keyframes slideUp{from{transform:translateY(24px);opacity:.6}to{transform:translateY(0);opacity:1}}

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important}
    html{scroll-behavior:auto}
    .glow{display:none}
  }

/* roulang page: category2 */
:root{
  --sky-night:#171233;
  --sky-deep:#241B4F;
  --brand-500:#6C4CF1;
  --brand-600:#5A38E0;
  --brand-soft:#EFEBFF;
  --aurora:#2ED3C6;
  --star-amber:#FF9F45;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --line:#E7E2F5;
  --text:#1A1633;
  --muted:#5F5A7A;
  --radius-card:24px;
  --radius-img:20px;
  --radius-btn:999px;
  --grad-brand:linear-gradient(120deg,#6C4CF1 0%,#A855F7 55%,#2ED3C6 100%);
  --grad-cta:linear-gradient(120deg,#FF9F45 0%,#FF7A59 100%);
  --shadow-card:0 8px 28px rgba(28,20,58,.08);
  --shadow-hover:0 16px 40px rgba(28,20,58,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sidebar-w:248px;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
h1{font-size:clamp(30px,4.4vw,54px);line-height:1.25;font-weight:700;letter-spacing:-.4px;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3;font-weight:700;letter-spacing:-.3px;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{line-height:1.85;}
:focus-visible{outline:2px solid var(--aurora);outline-offset:3px;border-radius:6px;}

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

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--sky-night);
  color:#fff;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  overflow-y:auto;
  z-index:70;
}
.sidebar::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.12;
  pointer-events:none;
}
.sidebar-logo{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  letter-spacing:.5px;
  padding:6px 8px 20px;
  color:#fff;
}
.logo-mark{
  position:relative;
  width:26px;height:26px;flex:none;
  border-radius:50%;
  background:linear-gradient(120deg,var(--brand-500),var(--aurora));
  box-shadow:0 0 0 4px rgba(108,76,241,.18);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:-7px;
  background:radial-gradient(circle at 50% 50%,rgba(255,159,69,.55),transparent 62%);
  pointer-events:none;
}
.sidebar-nav{
  position:relative;
  z-index:1;
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:12px 0 0;
  border-top:1px solid rgba(255,255,255,.10);
}
.nav-item{
  position:relative;
  display:block;
  padding:11px 14px 11px 18px;
  border-radius:12px;
  font-size:14.5px;
  line-height:1.5;
  color:rgba(255,255,255,.78);
  transition:background 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease);
}
.nav-item::before{
  content:"";
  position:absolute;
  left:4px;top:12px;bottom:12px;
  width:3px;
  border-radius:3px;
  background:var(--grad-brand);
  opacity:0;
  transition:opacity 220ms var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;transform:translateX(2px);}
.nav-item.is-active{
  background:rgba(239,235,255,.16);
  color:#fff;
  font-weight:600;
}
.nav-item.is-active::before{opacity:1;}
.sidebar-foot{
  position:relative;
  z-index:1;
  margin-top:auto;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.10);
}
.sidebar-foot p{
  font-size:12.5px;
  line-height:1.7;
  color:rgba(255,255,255,.58);
  margin-top:12px;
}
.sidebar-cta{width:100%;justify-content:center;}

/* ============ 移动端顶栏与抽屉 ============ */
.mobile-topbar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  align-items:center;
  justify-content:space-between;
  padding:0 18px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  z-index:80;
}
.mobile-topbar .brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:16px;}
.hamburger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
}
.hamburger span{
  display:block;
  width:18px;height:2px;
  background:var(--text);
  border-radius:2px;
  position:relative;
}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}
.drawer-overlay{
  position:fixed;inset:0;
  background:rgba(23,18,51,.52);
  opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  z-index:90;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:82%;
  max-width:320px;
  background:var(--sky-night);
  color:#fff;
  padding:20px 18px;
  transform:translateX(100%);
  transition:transform 280ms var(--ease);
  z-index:95;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.drawer-close{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(255,255,255,.10);
  color:#fff;
  font-size:20px;
  line-height:1;
}
.drawer .nav-item{margin-top:6px;font-size:15px;padding:13px 14px 13px 18px;}
.drawer-foot{margin-top:auto;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);}
.drawer-foot p{font-size:12.5px;color:rgba(255,255,255,.6);margin-top:12px;}

/* ============ 内容壳 ============ */
.content-shell{margin-left:var(--sidebar-w);}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  transition:transform 200ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease),filter 220ms var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad-brand);
  color:#fff;
  box-shadow:0 8px 20px rgba(108,76,241,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(108,76,241,.34);}
.btn-primary:active{transform:scale(.99);}
.btn-accent{
  background:var(--grad-cta);
  color:#fff;
  box-shadow:0 8px 20px rgba(255,122,89,.30);
}
.btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px);}
.btn-accent:active{transform:scale(.99);}
.btn-ghost{
  background:#fff;
  color:var(--brand-600);
  border:1px solid var(--brand-500);
}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.99);}
.btn-sm{padding:11px 22px;font-size:14px;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-600);
  font-size:14.5px;
  font-weight:600;
  transition:color 200ms var(--ease);
}
.text-link svg{transition:transform 220ms var(--ease);}
.text-link:hover{color:var(--brand-500);}
.text-link:hover svg{transform:translateX(3px);}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:var(--radius-btn);
  background:var(--brand-soft);
  color:var(--brand-600);
  font-size:13px;
  line-height:1.6;
  font-weight:500;
}

.section{padding-top:var(--sec);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:38px;
}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--brand-600);
  letter-spacing:1px;
  font-weight:600;
  margin-bottom:10px;
}
.section-head .eyebrow::before{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  background:var(--grad-brand);
}
.sec-title{
  position:relative;
  padding-left:16px;
}
.sec-title::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:4px;
  border-radius:4px;
  background:var(--grad-brand);
}
.section-sub{
  color:var(--muted);
  font-size:15px;
  max-width:620px;
  margin-top:10px;
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  min-height:260px;
  padding:74px 0 70px;
  color:#fff;
  background:
    linear-gradient(120deg,rgba(23,18,51,.88) 0%,rgba(36,27,79,.80) 60%,rgba(23,18,51,.86) 100%),
    linear-gradient(120deg,#6C4CF1 0%,#A855F7 55%,#2ED3C6 100%);
}
.page-hero .starfield{
  position:absolute;
  inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.16;
  pointer-events:none;
}
.glow{
  position:absolute;
  border-radius:50%;
  filter:blur(120px);
  opacity:.32;
  pointer-events:none;
}
.glow-a{width:380px;height:380px;top:-140px;right:-60px;background:#6C4CF1;}
.glow-b{width:340px;height:340px;bottom:-170px;left:8%;background:#2ED3C6;}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:rgba(255,255,255,.72);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.86);}
.breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.breadcrumb .sep{opacity:.5;}
.page-hero h1{max-width:880px;}
.page-hero .hero-desc{
  margin-top:18px;
  max-width:660px;
  font-size:16.5px;
  color:rgba(255,255,255,.86);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-tags .chip{
  background:rgba(255,255,255,.14);
  color:#fff;
  border:1px solid rgba(255,255,255,.22);
}

/* ============ Bento 网格 ============ */
.bento{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:24px;
}
.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),border-color 220ms var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:#D3C8FA;
}
.card h3{margin-bottom:12px;}
.card p{color:var(--muted);font-size:14.5px;}
.bento-large{grid-column:span 4;display:flex;flex-direction:column;gap:20px;}
.bento-small{grid-column:span 2;}
.bento-wide{grid-column:span 6;display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center;}
.bento-large .thumb{
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--brand-soft);
}
.bento-large .thumb img,.bento-wide .thumb img{width:100%;height:100%;object-fit:cover;}
.bento-wide .thumb{
  border-radius:var(--radius-img);
  overflow:hidden;
  aspect-ratio:16/10;
}
.card-icon{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:var(--brand-soft);
  color:var(--brand-600);
  margin-bottom:16px;
}
.card-icon svg{width:24px;height:24px;stroke-width:1.5;fill:none;stroke:currentColor;}
.star-list{margin-top:6px;display:flex;flex-direction:column;gap:10px;}
.star-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.8;
}
.star-list li::before{
  content:"";
  position:absolute;
  left:0;top:11px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--grad-brand);
  box-shadow:0 0 0 3px rgba(108,76,241,.12);
}
.card-foot{margin-top:20px;}

/* ============ 数据带 ============ */
.data-band{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  padding:52px 44px;
  color:#fff;
  background:var(--sky-night);
}
.data-band .starfield{
  position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.14;
  pointer-events:none;
}
.data-band .glow-a{top:-160px;left:-80px;width:360px;height:360px;background:#6C4CF1;}
.data-band .glow-b{bottom:-180px;right:-60px;width:340px;height:340px;background:#2ED3C6;}
.data-band > *{position:relative;z-index:2;}
.data-band h2{color:#fff;}
.data-band .band-desc{color:rgba(255,255,255,.72);font-size:15px;margin-top:12px;max-width:680px;}
.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:36px;
}
.metric{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  padding:22px 20px;
  transition:background 220ms var(--ease),border-color 220ms var(--ease),transform 220ms var(--ease);
}
.metric:hover{background:rgba(255,255,255,.12);border-color:rgba(46,211,198,.45);transform:translateY(-3px);}
.metric .num{
  font-size:clamp(32px,3.4vw,44px);
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  color:var(--aurora);
  letter-spacing:-1px;
}
.metric:nth-child(2) .num,.metric:nth-child(4) .num{color:var(--star-amber);}
.metric .num small{font-size:15px;font-weight:600;margin-left:4px;color:rgba(255,255,255,.7);}
.metric .label{font-size:13.5px;color:rgba(255,255,255,.78);margin-top:10px;line-height:1.7;}
.band-actions{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.band-note{font-size:12.5px;color:rgba(255,255,255,.52);margin-top:18px;}

/* ============ 流程 ============ */
.flow{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  position:relative;
}
.flow::before{
  content:"";
  position:absolute;
  top:33px;left:36px;right:36px;
  height:2px;
  background:linear-gradient(90deg,rgba(108,76,241,.35),rgba(46,211,198,.35));
}
.flow-step{position:relative;}
.flow-dot{
  position:relative;
  width:68px;height:68px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  font-weight:700;
  font-size:19px;
  font-variant-numeric:tabular-nums;
  color:var(--brand-600);
  z-index:2;
}
.flow-dot::after{
  content:"";
  position:absolute;
  inset:-6px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.16),transparent 68%);
}
.flow-step h3{margin-top:20px;font-size:17px;}
.flow-step p{color:var(--muted);font-size:14.5px;margin-top:8px;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:920px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:0 26px;
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.faq-item[open]{
  border-color:#D5CBFB;
  box-shadow:0 14px 34px rgba(28,20,58,.10);
}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:20px 40px 20px 0;
  font-size:16px;
  font-weight:600;
  line-height:1.6;
  transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"";
  position:absolute;
  right:4px;top:26px;
  width:10px;height:10px;
  border-right:2px solid var(--brand-600);
  border-bottom:2px solid var(--brand-600);
  transform:rotate(45deg);
  transition:transform 240ms var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);top:30px;}
.faq-item summary:hover{color:var(--brand-600);}
.faq-item[open] summary::before{
  content:"";
  position:absolute;
  left:-26px;top:18px;bottom:18px;
  width:4px;
  border-radius:4px;
  background:var(--grad-brand);
}
.faq-body{
  padding:0 0 22px;
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
  max-width:760px;
}
.faq-body p + p{margin-top:10px;}

/* ============ CTA ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  padding:56px 48px;
  background:var(--grad-brand);
  color:#fff;
  text-align:center;
}
.cta-band .starfield{
  position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.65) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.16;
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;}
.cta-band p{margin:14px auto 0;max-width:620px;color:rgba(255,255,255,.88);font-size:15.5px;}
.cta-actions{margin-top:30px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.24);}

/* ============ 隐私条 ============ */
.privacy-bar{
  margin-top:22px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--muted);
  max-width:840px;
}
.privacy-bar a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;}

/* ============ 页脚 ============ */
.footer{
  position:relative;
  overflow:hidden;
  margin-top:var(--sec);
  background:var(--sky-night);
  color:#fff;
  padding:64px 0 0;
}
.footer .starfield{
  position:absolute;inset:0;
  background-image:radial-gradient(circle,rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.12;
  pointer-events:none;
}
.footer .container{position:relative;z-index:2;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;margin-bottom:16px;
}
.footer-grid p{color:rgba(255,255,255,.66);font-size:14px;line-height:1.8;max-width:340px;}
.footer h4{
  font-size:15px;font-weight:600;color:#fff;
  margin-bottom:18px;letter-spacing:.4px;
}
.footer-links li,.footer-contact li{
  font-size:14px;color:rgba(255,255,255,.66);line-height:1.9;
  margin-bottom:10px;
}
.footer-links a{transition:color 200ms var(--ease);}
.footer-links a:hover{color:var(--aurora);}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ============ 表单弹层 ============ */
.modal-overlay{
  position:fixed;inset:0;
  background:rgba(23,18,51,.62);
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  opacity:0;visibility:hidden;
  transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
  z-index:120;
}
.modal-overlay.is-open{opacity:1;visibility:visible;}
.modal{
  position:relative;
  width:100%;
  max-width:552px;
  background:#fff;
  border-radius:24px;
  overflow:hidden;
  transform:translateY(12px) scale(.98);
  transition:transform 260ms var(--ease);
  max-height:90vh;
  overflow-y:auto;
}
.modal-overlay.is-open .modal{transform:translateY(0) scale(1);}
.modal-strip{height:6px;background:var(--grad-brand);}
.modal-inner{padding:30px 30px 28px;}
.modal-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;}
.modal-head h3{font-size:21px;font-weight:700;}
.modal-head p{color:var(--muted);font-size:14px;margin-top:8px;}
.modal-close{
  width:40px;height:40px;flex:none;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:var(--bg);
  color:var(--muted);
  font-size:20px;line-height:1;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.modal-close:hover{background:var(--brand-soft);color:var(--brand-600);}
.form-grid{display:flex;flex-direction:column;gap:16px;margin-top:24px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field label{
  display:block;
  font-size:13.5px;
  font-weight:600;
  margin-bottom:8px;
  color:var(--text);
}
.field input,.field select,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  font-size:14.5px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(108,76,241,.12);
}
.check-row{
  display:flex;align-items:flex-start;gap:10px;
  font-size:13px;color:var(--muted);line-height:1.7;
}
.check-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--brand-500);flex:none;}
.form-actions{margin-top:6px;}
.form-actions .btn{width:100%;}
.form-note{font-size:12.5px;color:var(--muted);line-height:1.7;margin-top:14px;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .bento-large{grid-column:span 3;}
  .bento-small{grid-column:span 3;}
  .bento-wide{grid-column:span 6;grid-template-columns:1fr;gap:24px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1023px){
  :root{--sec:72px;}
  .sidebar{display:none;}
  .mobile-topbar{display:flex;}
  .content-shell{margin-left:0;padding-top:60px;}
  .flow{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .flow::before{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .data-band{padding:44px 32px;}
  .cta-band{padding:46px 32px;}
}
@media (max-width:767px){
  :root{--sec:56px;}
  body .container{padding-left:20px;padding-right:20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .bento-large,.bento-small,.bento-wide{grid-column:span 6;}
  .card{padding:24px;}
  .page-hero{padding:52px 0 48px;min-height:220px;}
  .page-hero .hero-desc{font-size:15px;}
  .metric-grid{grid-template-columns:1fr;}
  .flow{grid-template-columns:1fr;}
  .data-band{padding:36px 22px;border-radius:24px;}
  .cta-band{padding:38px 22px;border-radius:24px;}
  .footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .modal-overlay{padding:0;align-items:flex-end;}
  .modal{
    max-width:100%;
    border-radius:24px 24px 0 0;
    transform:translateY(24px);
  }
  .modal-inner{padding:24px 20px 26px;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .hero-tags{gap:8px;}
  .btn{padding:13px 22px;font-size:14.5px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .card:hover,.metric:hover,.btn:hover{transform:none;}
  .glow{display:none;}
}

/* roulang page: category3 */
:root{
  --sky-night:#171233;
  --sky-deep:#241B4F;
  --brand-500:#6C4CF1;
  --brand-600:#5A38E0;
  --brand-soft:#EFEBFF;
  --aurora:#2ED3C6;
  --star-amber:#FF9F45;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --line:#E7E2F5;
  --text:#1A1633;
  --muted:#5F5A7A;
  --radius-card:24px;
  --radius-img:20px;
  --radius-btn:999px;
  --brand-gradient:linear-gradient(120deg,#6C4CF1 0%,#A855F7 55%,#2ED3C6 100%);
  --cta-gradient:linear-gradient(120deg,#FF9F45 0%,#FF7A59 100%);
  --shadow-card:0 8px 28px rgba(28,20,58,.08);
  --shadow-card-hover:0 16px 40px rgba(28,20,58,.14);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--aurora);outline-offset:2px;}
h1,h2,h3,h4{color:var(--text);margin:0;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;}

/* ---------- 布局骨架 ---------- */
.main{
  margin-left:248px;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}

/* ---------- 侧边栏 ---------- */
.sidebar{
  position:fixed;
  top:0;bottom:0;left:0;
  width:248px;
  background:var(--sky-night);
  display:flex;
  flex-direction:column;
  padding:28px 20px 24px;
  z-index:60;
  border-right:1px solid rgba(255,255,255,.07);
  overflow-y:auto;
}
.sidebar::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.13;
  pointer-events:none;
}
.sidebar > *{position:relative;z-index:1;}
.sidebar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:.5px;
  padding:6px 4px 22px;
  border-bottom:1px solid rgba(255,255,255,.08);
  margin-bottom:22px;
}
.logo-mark{
  width:26px;height:26px;
  border-radius:9px;
  background:var(--brand-gradient);
  position:relative;
  flex:none;
  display:inline-block;
  box-shadow:0 0 0 3px rgba(108,76,241,.18);
}
.logo-mark::after{
  content:"";
  position:absolute;
  inset:0;margin:auto;
  width:11px;height:11px;
  background:#fff;
  clip-path:polygon(50% 0,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0 50%,39% 39%);
}
.sidebar-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
  flex:1;
}
.nav-item{
  position:relative;
  display:block;
  padding:11px 14px 11px 18px;
  border-radius:12px;
  color:rgba(255,255,255,.72);
  text-decoration:none;
  font-size:15px;
  line-height:1.5;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.09);color:#fff;}
.nav-item.is-active{
  background:var(--brand-soft);
  color:var(--brand-600);
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  border-radius:3px;
  background:var(--brand-gradient);
}
.sidebar-foot{
  margin-top:24px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
}
.sidebar-tip{
  margin:14px 0 0;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(255,255,255,.52);
}
.drawer-close{
  display:none;
  position:absolute;
  top:18px;right:14px;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  color:#fff;
  cursor:pointer;
}
.drawer-close:hover{background:rgba(255,255,255,.16);}

/* ---------- 移动端顶栏 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  background:var(--sky-night);
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
  z-index:70;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-mini{
  display:flex;align-items:center;gap:9px;
  color:#fff;text-decoration:none;font-weight:700;font-size:16px;
}
.hamburger{
  width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  color:#fff;
  cursor:pointer;
  font-size:17px;
}
.hamburger:hover{background:rgba(255,255,255,.16);}
.drawer-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(17,12,40,.55);
  z-index:55;
  opacity:0;
  visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  text-decoration:none;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),filter .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:var(--brand-gradient);
  color:#fff;
  box-shadow:0 8px 20px rgba(108,76,241,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(108,76,241,.34);}
.btn-primary:active{transform:scale(.99);}
.btn-ghost{
  background:#fff;
  color:var(--brand-600);
  border-color:var(--brand-500);
}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.99);}
.btn-amber{
  background:var(--cta-gradient);
  color:#fff;
  box-shadow:0 8px 20px rgba(255,122,89,.28);
}
.btn-amber:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,122,89,.34);}
.btn-amber:active{transform:scale(.99);}
.btn-block{width:100%;}
.btn-sm{padding:11px 22px;font-size:14px;}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand-600);
  font-weight:600;
  font-size:14px;
  text-decoration:none;
}
.link-more i{transition:transform .2s var(--ease);font-size:12px;}
.link-more:hover i{transform:translateX(3px);}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  background:linear-gradient(120deg,#241B4F 0%,#4B2FB8 55%,#1E6E6A 100%);
  padding:54px 0 50px;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.17;
  pointer-events:none;
}
.page-head::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-140px;top:-260px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,211,198,.42) 0%,rgba(46,211,198,0) 70%);
  filter:blur(60px);
  pointer-events:none;
}
.page-head .container{position:relative;z-index:1;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:rgba(255,255,255,.66);
  margin-bottom:18px;
  flex-wrap:wrap;
}
.breadcrumb a{text-decoration:none;color:rgba(255,255,255,.82);}
.breadcrumb a:hover{color:var(--aurora);}
.breadcrumb .current{color:#fff;}
.page-title{
  font-size:clamp(30px,4.4vw,48px);
  line-height:1.25;
  font-weight:700;
  color:#fff;
  letter-spacing:.5px;
}
.page-sub{
  margin:16px 0 0;
  max-width:720px;
  font-size:15.5px;
  line-height:1.8;
  color:rgba(255,255,255,.82);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--radius-btn);
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-size:12.5px;
  letter-spacing:.6px;
  margin-bottom:16px;
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--aurora);
  box-shadow:0 0 0 4px rgba(46,211,198,.22);
}

/* ---------- 通用标题 ---------- */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  margin-bottom:44px;
}
.sec-title{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:clamp(24px,3vw,36px);
  line-height:1.3;
  font-weight:700;
}
.sec-title::before{
  content:"";
  width:6px;
  height:30px;
  border-radius:4px;
  background:var(--brand-gradient);
  flex:none;
}
.sec-desc{
  margin:14px 0 0;
  color:var(--muted);
  font-size:15.5px;
  max-width:760px;
}

/* ---------- 时间轴 ---------- */
.timeline{
  position:relative;
  padding-left:44px;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:10px;
  top:10px;
  bottom:10px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,#6C4CF1 0%,#A855F7 50%,#2ED3C6 100%);
  opacity:.55;
}
.tl-item{
  position:relative;
  padding-bottom:28px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";
  position:absolute;
  left:-44px;
  top:26px;
  width:20px;height:20px;
  border-radius:50%;
  background:var(--brand-gradient);
  box-shadow:0 0 0 5px rgba(108,76,241,.12);
}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 28px;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
.tl-card h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:10px;
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.tl-card p{color:var(--muted);font-size:15px;margin:0;}
.step-chip{
  display:inline-flex;
  align-items:center;
  padding:3px 12px;
  border-radius:var(--radius-btn);
  background:var(--brand-soft);
  color:var(--brand-600);
  font-size:12.5px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
}

/* ---------- 瀑布卡片 ---------- */
.masonry{
  column-count:2;
  column-gap:24px;
}
.masonry > .card{
  break-inside:avoid;
  margin:0 0 24px;
  display:block;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-card-hover);
  border-color:transparent;
  background-image:linear-gradient(#fff,#fff),var(--brand-gradient);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
.card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;}
.img-cover{
  width:100%;
  object-fit:cover;
  border-radius:var(--radius-img);
  background:var(--brand-soft);
  margin-bottom:20px;
}
.ratio-16-10{aspect-ratio:16/10;}
.ratio-4-3{aspect-ratio:4/3;}
.ratio-1-1{aspect-ratio:1/1;}
.star-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:10px;}
.star-list li{
  position:relative;
  padding-left:20px;
  font-size:14.5px;
  color:var(--muted);
  line-height:1.7;
}
.star-list li::before{
  content:"";
  position:absolute;
  left:2px;top:11px;
  width:7px;height:7px;
  background:var(--brand-gradient);
  clip-path:polygon(50% 0,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0 50%,39% 39%);
}
.chip{
  display:inline-flex;
  align-items:center;
  padding:5px 14px;
  border-radius:var(--radius-btn);
  background:var(--brand-soft);
  color:var(--brand-600);
  font-size:13px;
  font-weight:500;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}

/* ---------- 数据带 ---------- */
.data-band{
  position:relative;
  overflow:hidden;
  background:var(--sky-night);
  border-radius:28px;
  padding:52px 44px;
}
.data-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.15;
  pointer-events:none;
}
.data-band::after{
  content:"";
  position:absolute;
  width:460px;height:460px;
  top:-200px;left:-120px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(108,76,241,.5) 0%,rgba(108,76,241,0) 70%);
  filter:blur(70px);
  pointer-events:none;
}
.data-band > *{position:relative;z-index:1;}
.data-band h2{
  color:#fff;
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
  font-weight:700;
}
.data-band .lead{
  color:rgba(255,255,255,.72);
  font-size:15px;
  margin-top:14px;
  max-width:720px;
}
.data-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:36px;
}
.data-cell{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.13);
  border-radius:20px;
  padding:22px 20px;
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.data-cell:hover{transform:translateY(-4px);background:rgba(255,255,255,.11);}
.data-value{
  display:flex;
  align-items:baseline;
  gap:5px;
  font-variant-numeric:tabular-nums;
  color:var(--aurora);
  font-weight:700;
}
.data-cell:nth-child(even) .data-value{color:var(--star-amber);}
.data-value .num{font-size:38px;line-height:1.1;letter-spacing:-.5px;}
.data-value .unit{font-size:14px;font-weight:600;}
.data-label{
  margin-top:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.74);
  line-height:1.65;
}

/* ---------- 适配场景 ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.split img{
  border-radius:28px;
  aspect-ratio:4/3;
  object-fit:cover;
  box-shadow:var(--shadow-card);
}
.split h2{
  font-size:clamp(24px,3vw,36px);
  line-height:1.3;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:14px;
}
.split h2::before{
  content:"";
  width:6px;height:30px;border-radius:4px;
  background:var(--brand-gradient);
  flex:none;
}
.split p{color:var(--muted);margin-top:18px;font-size:15.5px;}

/* ---------- 联系 CTA ---------- */
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:28px;
  background:linear-gradient(120deg,#241B4F 0%,#4B2FB8 58%,#1E6E6A 100%);
  padding:48px 44px;
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:48px;
  align-items:start;
}
.cta-card::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.15;
  pointer-events:none;
}
.cta-card > *{position:relative;z-index:1;}
.cta-card h2{
  color:#fff;
  font-size:clamp(22px,2.6vw,30px);
  line-height:1.35;
  font-weight:700;
}
.cta-card .cta-text{color:rgba(255,255,255,.78);font-size:15px;margin-top:16px;}
.cta-points{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;
  color:rgba(255,255,255,.86);
  font-size:14.5px;
}
.cta-points i{color:var(--aurora);margin-top:6px;font-size:12px;}

.form-card{
  background:#fff;
  border-radius:22px;
  padding:28px;
  box-shadow:0 20px 50px rgba(12,7,35,.28);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13.5px;color:var(--muted);font-weight:500;}
.field input,.field select,.field textarea{
  height:48px;
  border:1px solid var(--line);
  border-radius:14px;
  padding:0 14px;
  background:#FDFCFF;
  color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  width:100%;
}
.field textarea{height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand-500);
  box-shadow:0 0 0 4px rgba(108,76,241,.14);
}
.check-row{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.check-row input{width:17px;height:17px;margin-top:3px;accent-color:var(--brand-500);flex:none;}
.form-note{
  margin-top:14px;
  font-size:13px;
  color:var(--muted);
  line-height:1.75;
}
.form-msg{
  margin-top:12px;
  font-size:13px;
  color:var(--star-amber);
  min-height:18px;
}

/* ---------- 隐私条 ---------- */
.privacy-bar{
  padding:22px 0 4px;
  font-size:12.5px;
  color:var(--muted);
  line-height:1.7;
  border-top:1px solid var(--line);
  margin-top:56px;
}

/* ---------- 页脚 ---------- */
.footer{
  position:relative;
  overflow:hidden;
  background:var(--sky-night);
  color:rgba(255,255,255,.78);
  padding:72px 0 0;
  margin-top:96px;
}
.footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:22px 22px;
  opacity:.14;
  pointer-events:none;
}
.footer::after{
  content:"";
  position:absolute;
  width:520px;height:520px;
  right:-180px;bottom:-280px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(46,211,198,.32) 0%,rgba(46,211,198,0) 70%);
  filter:blur(70px);
  pointer-events:none;
}
.footer .container{position:relative;z-index:1;}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.25fr;
  gap:40px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:18px;
  font-weight:700;
  margin-bottom:18px;
}
.footer p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);}
.footer h4{color:#fff;font-size:16px;font-weight:600;margin:0 0 18px;}
.footer-links,.footer-contact{
  list-style:none;
  padding:0;
  margin:0;
  display:grid;
  gap:11px;
}
.footer-links a{
  color:rgba(255,255,255,.72);
  text-decoration:none;
  font-size:14px;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-links a:hover{color:var(--aurora);padding-left:4px;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7;}
.footer-contact strong{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  margin-top:56px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:rgba(255,255,255,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  .sidebar{
    left:auto;
    right:0;
    width:82%;
    max-width:320px;
    transform:translateX(105%);
    transition:transform .3s var(--ease);
    box-shadow:-24px 0 60px rgba(0,0,0,.35);
    border-right:none;
    border-left:1px solid rgba(255,255,255,.07);
  }
  .sidebar.open{transform:translateX(0);}
  .drawer-close{display:flex;}
  .drawer-mask{display:block;}
  .drawer-mask.open{opacity:1;visibility:visible;}
  .mobile-bar{display:flex;}
  .main{margin-left:0;padding-top:60px;}
  .section{padding:72px 0;}
  .data-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:32px;}
  .cta-card{grid-template-columns:1fr;gap:32px;padding:40px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section--tight{padding:48px 0;}
  .masonry{column-count:1;}
  .page-head{padding:42px 0 40px;}
  .data-band{padding:40px 24px;border-radius:24px;}
  .data-grid{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer{padding-top:56px;margin-top:64px;}
  .form-grid{grid-template-columns:1fr;}
  .timeline{padding-left:34px;}
  .tl-item::before{left:-34px;top:24px;width:18px;height:18px;}
  .timeline::before{left:8px;}
  .tl-card{padding:22px;}
  .card{padding:22px;}
  .cta-card{padding:32px 22px;border-radius:24px;}
  .form-card{padding:22px;}
  .sec-head{margin-bottom:32px;}
  .sec-title{font-size:23px;}
}
@media (max-width:519px){
  .page-title{font-size:27px;}
  .data-value .num{font-size:32px;}
  .btn{padding:13px 22px;font-size:14.5px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .card:hover,.tl-card:hover,.data-cell:hover,.btn:hover{transform:none;}
}