/* roulang page: index */
:root{
    --electric:#00BFA6;
    --electric-soft:#E9FAF7;
    --neon:#6C4DF6;
    --lime:#D7FF3F;
    --bg:#F5F7F4;
    --dark:#0E1110;
    --surface:#FFFFFF;
    --text:#101418;
    --sub:#4B5563;
    --muted:#6B7280;
    --border:#DCE3DF;
    --danger:#E5484D;
    --success:#16A34A;
    --radius-card:20px;
    --radius-btn:12px;
    --shadow-1:0 8px 24px rgba(16,20,24,.06);
    --shadow-2:0 18px 40px rgba(0,191,166,.18);
    --container:1240px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",system-ui,sans-serif;
    background:var(--bg);
    color:var(--text);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none}
  a{color:inherit;text-decoration:none}
  button,input,textarea,select{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  h1{font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-.5px}
  h2{font-size:30px;line-height:1.3;font-weight:800}
  h3{font-size:21px;line-height:1.4;font-weight:700}
  p{color:var(--sub)}
  ::selection{background:var(--lime);color:var(--text)}
  :focus-visible{outline:2px solid var(--lime);outline-offset:2px;border-radius:6px}

  .container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
  .section{padding:88px 0}
  .section-tight{padding:64px 0}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.94);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
  }
  .nav-row{
    display:flex;align-items:center;gap:22px;
    max-width:var(--container);margin:0 auto;padding:12px 24px;
  }
  .brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
  .brand-mark{
    width:42px;height:42px;border-radius:13px;
    background:linear-gradient(140deg,var(--electric),var(--neon));
    display:flex;align-items:center;justify-content:center;
    color:#062B26;font-weight:800;font-size:17px;
    box-shadow:0 6px 16px rgba(0,191,166,.32);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-text strong{font-size:16.5px;font-weight:800;letter-spacing:-.2px}
  .brand-text span{font-size:11.5px;color:var(--muted);letter-spacing:1.1px;text-transform:uppercase}

  .search-form{flex:1 1 auto;max-width:640px;min-width:220px;position:relative}
  .search-form input{
    width:100%;height:50px;border-radius:14px;
    border:1px solid var(--border);background:#FBFCFB;
    padding:0 118px 0 46px;font-size:15px;
    transition:border-color .2s,box-shadow .2s,background .2s;
  }
  .search-form input::placeholder{color:#9AA5A0}
  .search-form input:hover{border-color:#C6D2CD}
  .search-form input:focus{
    outline:none;border-color:var(--electric);background:#fff;
    box-shadow:0 0 0 3px rgba(215,255,63,.55);
  }
  .search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
  .search-btn{
    position:absolute;right:5px;top:5px;height:40px;padding:0 18px;
    border:none;border-radius:11px;background:var(--electric);color:#062B26;
    font-weight:700;font-size:14.5px;cursor:pointer;transition:background .18s,transform .18s;
  }
  .search-btn:hover{background:#12D3B8}
  .search-btn:active{transform:translateY(1px)}

  .nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
  .nav-hot{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--muted)}
  .nav-hot a{padding:3px 10px;border-radius:999px;background:#F1F4F2;transition:background .18s,color .18s}
  .nav-hot a:hover{background:var(--electric-soft);color:#0B6B5C}

  .nav-links{
    border-top:1px solid var(--border);
    background:rgba(250,251,250,.9);
  }
  .nav-links-inner{
    max-width:var(--container);margin:0 auto;padding:0 24px;
    display:flex;align-items:center;gap:6px;flex-wrap:nowrap;overflow-x:auto;
    scrollbar-width:none;
  }
  .nav-links-inner::-webkit-scrollbar{display:none}
  .nav-links-inner a{
    position:relative;padding:13px 15px;font-size:15px;color:var(--sub);
    white-space:nowrap;transition:color .18s,background .18s;border-radius:10px;
  }
  .nav-links-inner a:hover{color:var(--electric);background:var(--electric-soft)}
  .nav-links-inner a.active{color:var(--text);font-weight:700}
  .nav-links-inner a.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:4px;height:3px;
    border-radius:3px;background:linear-gradient(90deg,var(--electric),var(--neon));
  }
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);
    background:#fff;align-items:center;justify-content:center;cursor:pointer;
  }
  .nav-toggle:hover{border-color:var(--electric)}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:50px;padding:0 24px;border-radius:var(--radius-btn);
    font-weight:600;font-size:15.5px;border:1px solid transparent;cursor:pointer;
    transition:transform .18s,box-shadow .18s,background-color .18s,color .18s,border-color .18s;
    white-space:nowrap;
  }
  .btn-sm{height:42px;padding:0 18px;font-size:14.5px;border-radius:11px}
  .btn-primary{background:var(--electric);color:#062B26}
  .btn-primary:hover{background:#14D6BA;transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-secondary{background:#fff;border-color:var(--electric);color:#0B3B34}
  .btn-secondary:hover{background:var(--electric-soft);transform:translateY(-2px)}
  .btn-secondary:active{transform:translateY(1px)}
  .btn-ghost{background:transparent;border-color:rgba(248,250,249,.4);color:#F8FAF9}
  .btn-ghost:hover{background:rgba(248,250,249,.12)}
  .btn-dark{background:var(--coal);color:#F8FAF9}
  .btn-dark:hover{background:#1B2120;transform:translateY(-2px)}
  .btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

  /* ============ Hero ============ */
  .hero{position:relative;overflow:hidden;padding:76px 0 84px;background:var(--bg)}
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;opacity:.12;
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(0,191,166,.07) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(0,191,166,.07) 1px,transparent 1px);
    background-size:34px 34px;
    mask-image:radial-gradient(circle at 30% 40%,#000 20%,transparent 78%);
    -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 20%,transparent 78%);
  }
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
    background:#fff;border:1px solid var(--border);font-size:13px;color:var(--sub);
    box-shadow:var(--shadow-1);
  }
  .hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block}
  .hero h1{margin:20px 0 18px}
  .hero h1 em{font-style:normal;color:#0B6B5C;position:relative}
  .hero h1 em::after{
    content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;
    background:rgba(215,255,63,.75);z-index:-1;border-radius:4px;
  }
  .hero-sub{font-size:17px;line-height:1.85;max-width:560px}
  .hero-cta{display:flex;gap:14px;margin:30px 0 26px;flex-wrap:wrap}
  .badge-row{display:flex;flex-wrap:wrap;gap:10px}
  .badge{
    display:inline-flex;align-items:center;gap:7px;font-size:13.5px;color:#0B3B34;
    background:#fff;border:1px solid var(--border);border-radius:999px;padding:7px 14px;
  }
  .badge svg{color:var(--electric)}

  .hero-visual{position:relative}
  .hero-visual .main-shot{
    border-radius:24px;overflow:hidden;border:1px solid var(--border);
    box-shadow:0 24px 60px rgba(16,20,24,.14);background:#fff;
  }
  .hero-visual .main-shot img{width:100%;aspect-ratio:16/11;object-fit:cover}
  .float-card{
    position:absolute;background:#fff;border:1px solid var(--border);
    border-radius:16px;box-shadow:0 14px 34px rgba(16,20,24,.14);
    padding:13px 16px;min-width:154px;
  }
  .float-card .k{font-size:12px;color:var(--muted);letter-spacing:.4px}
  .float-card .v{font-size:19px;font-weight:800;line-height:1.3;font-family:"DIN Alternate","Barlow Condensed",sans-serif}
  .float-version{left:-22px;top:26px}
  .float-rating{right:-18px;top:44%;border-color:rgba(0,191,166,.5)}
  .float-update{left:16px;bottom:-22px}
  .stars{color:#E2B400;font-size:14px;letter-spacing:2px}

  /* ============ 通用区块标题 ============ */
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:38px;flex-wrap:wrap}
  .sec-head .lead{max-width:660px;margin-top:12px;font-size:16.5px}
  .kicker{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
    letter-spacing:1.6px;color:#0B6B5C;text-transform:uppercase;
  }
  .kicker::before{content:"";width:22px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--electric),var(--neon))}

  /* ============ 应用卡网格 ============ */
  .card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}
  .app-card{
    display:flex;flex-direction:column;background:var(--surface);
    border:1px solid var(--border);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-1);
    transition:transform .24s,border-color .24s,box-shadow .24s;
  }
  .app-card:hover{transform:translateY(-4px);border-color:var(--electric);box-shadow:var(--shadow-2)}
  .app-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDF1EF}
  .app-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .38s ease}
  .app-card:hover .app-thumb img{transform:scale(1.03)}
  .chip{
    position:absolute;left:12px;top:12px;z-index:2;
    font-size:12px;font-weight:700;padding:4px 11px;border-radius:999px;
    background:rgba(14,17,16,.78);color:#F8FAF9;backdrop-filter:blur(4px);
  }
  .chip-lime{background:var(--lime);color:#2A3000}
  .chip-neon{background:var(--neon);color:#fff}
  .app-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:11px;flex:1}
  .app-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .app-desc{font-size:14px;line-height:1.7;color:var(--sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .meta-row{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:12.5px;color:var(--muted)}
  .meta-row b{color:var(--text);font-weight:700;font-family:"DIN Alternate","Barlow Condensed",sans-serif;font-size:13.5px}
  .app-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:4px}
  .tag{display:inline-flex;align-items:center;font-size:12.5px;padding:4px 11px;border-radius:999px;background:var(--electric-soft);color:#0B6B5C;font-weight:600}
  .link-more{font-size:14px;font-weight:700;color:#0B6B5C;display:inline-flex;align-items:center;gap:6px;transition:gap .18s,color .18s}
  .link-more:hover{gap:10px;color:var(--electric)}

  /* ============ 评价轮播 ============ */
  .review-section{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
  .review-track{
    display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:4px 4px 18px;scroll-behavior:smooth;scrollbar-width:none;
  }
  .review-track::-webkit-scrollbar{display:none}
  .review-card{
    flex:0 0 calc((100% - 44px)/3);scroll-snap-align:start;
    background:#FBFCFB;border:1px solid var(--border);border-radius:18px;
    padding:22px;display:flex;flex-direction:column;gap:14px;
    transition:border-color .2s,box-shadow .2s,transform .2s;
  }
  .review-card:hover{border-color:var(--electric);box-shadow:var(--shadow-1);transform:translateY(-3px)}
  .review-top{display:flex;align-items:center;gap:12px}
  .avatar{
    width:44px;height:44px;border-radius:50%;flex:0 0 auto;
    display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
    background:linear-gradient(140deg,#CFF6EF,#E4DEFF);color:#0B3B34;
  }
  .review-top .name{font-weight:700;font-size:15px}
  .review-top .src{font-size:12.5px;color:var(--muted)}
  .review-text{font-size:14.8px;line-height:1.8;color:var(--sub);display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
  .review-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--muted)}
  .carousel-nav{display:flex;gap:10px}
  .carousel-nav button{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;
    display:flex;align-items:center;justify-content:center;cursor:pointer;
    transition:border-color .18s,background .18s,transform .18s;
  }
  .carousel-nav button:hover{border-color:var(--electric);background:var(--electric-soft)}
  .carousel-nav button:active{transform:translateY(1px)}

  /* ============ 保障条 ============ */
  .guarantee{background:var(--coal);color:#F8FAF9;position:relative;overflow:hidden}
  .guarantee::before{
    content:"";position:absolute;inset:0;
    background-image:radial-gradient(circle at 12% 20%,rgba(0,191,166,.28),transparent 42%),
                     radial-gradient(circle at 88% 80%,rgba(108,77,246,.26),transparent 45%);
    pointer-events:none;
  }
  .guarantee .container{position:relative;z-index:2}
  .guarantee h2{color:#F8FAF9}
  .guarantee .lead{color:#B9C2BE}
  .g-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:36px}
  .g-item{
    border:1px solid rgba(248,250,249,.14);border-radius:18px;padding:22px;
    background:rgba(248,250,249,.05);transition:border-color .2s,background .2s,transform .2s;
  }
  .g-item:hover{border-color:rgba(0,191,166,.6);background:rgba(0,191,166,.09);transform:translateY(-3px)}
  .g-icon{
    width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(215,255,63,.14);color:var(--lime);margin-bottom:14px;
  }
  .g-item h3{font-size:17.5px;color:#F8FAF9;margin-bottom:8px}
  .g-item p{font-size:14.2px;color:#B9C2BE;line-height:1.75}

  /* ============ 资讯列表 ============ */
  .news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
  .news-card{
    background:#fff;border:1px solid var(--border);border-radius:18px;padding:22px;
    display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-1);
    transition:transform .22s,border-color .22s,box-shadow .22s;
  }
  .news-card:hover{transform:translateY(-4px);border-color:var(--electric);box-shadow:var(--shadow-2)}
  .news-card h3{font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .news-card h3 a:hover{color:#0B6B5C}
  .news-card p{font-size:14.2px;line-height:1.78;color:var(--sub);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .news-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);margin-top:auto;padding-top:6px;border-top:1px dashed var(--border)}
  .empty-state{
    grid-column:1/-1;text-align:center;padding:52px 24px;border:1px dashed var(--border);
    border-radius:18px;background:#fff;
  }
  .empty-state svg{color:#B4C0BB;margin:0 auto 14px}
  .empty-state p{font-size:15px;color:var(--sub);margin-bottom:16px}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:860px;margin:0 auto}
  .faq-item{
    background:#fff;border:1px solid var(--border);border-radius:16px;
    margin-bottom:12px;overflow:hidden;transition:border-color .2s,box-shadow .2s;
  }
  .faq-item:hover{border-color:#C6D2CD}
  .faq-item[open]{border-color:var(--electric);box-shadow:var(--shadow-1)}
  .faq-item summary{
    position:relative;cursor:pointer;list-style:none;
    padding:19px 56px 19px 22px;font-size:17px;font-weight:600;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
    background:var(--electric);border-radius:0 3px 3px 0;opacity:0;transition:opacity .2s;
  }
  .faq-item[open] summary::before{opacity:1}
  .faq-item summary::after{
    content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
    font-size:23px;font-weight:400;color:var(--electric);line-height:1;
  }
  .faq-item[open] summary::after{content:"−"}
  .faq-answer{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--sub)}

  /* ============ CTA ============ */
  .cta-band{
    position:relative;overflow:hidden;border-radius:26px;
    background:linear-gradient(120deg,#0E1110 0%,#123B35 55%,#1B2A46 100%);
    color:#F8FAF9;padding:52px 48px;
    display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
  }
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:300px;height:300px;border-radius:50%;
    background:radial-gradient(circle,rgba(0,191,166,.42),transparent 68%);pointer-events:none;
  }
  .cta-band h2{color:#F8FAF9;position:relative;z-index:2}
  .cta-band p{color:#B9C2BE;margin-top:10px;max-width:620px;position:relative;z-index:2}
  .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--coal);color:#C9D1CD;margin-top:88px;position:relative}
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,var(--electric),var(--neon));
  }
  .footer-grid{
    display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
    padding:64px 0 44px;
  }
  .footer-grid h4{font-size:15px;color:#F8FAF9;margin-bottom:18px;font-weight:700}
  .footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
  .footer-brand .brand-mark{width:38px;height:38px;font-size:15px;border-radius:12px}
  .footer-brand strong{color:#F8FAF9;font-size:16px;font-weight:800}
  .footer-about{font-size:14px;line-height:1.85;color:#98A29E;max-width:360px}
  .footer-grid ul li{margin-bottom:11px}
  .footer-grid ul a{font-size:14.2px;color:#B9C2BE;transition:color .18s,padding-left .18s}
  .footer-grid ul a:hover{color:var(--electric);padding-left:4px}
  .footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .footer-tags span{
    font-size:12.5px;padding:4px 11px;border-radius:999px;
    background:rgba(248,250,249,.07);border:1px solid rgba(248,250,249,.12);color:#B9C2BE;
  }
  .footer-contact li{font-size:14.2px;color:#B9C2BE;display:flex;gap:9px;align-items:flex-start}
  .footer-contact svg{color:var(--electric);flex:0 0 auto;margin-top:5px}
  .footer-bottom{
    border-top:1px solid rgba(248,250,249,.1);
    padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:#8B948F;
  }
  .footer-bottom a:hover{color:var(--electric)}

  /* ============ 移动端吸底 CTA ============ */
  .mobile-cta{display:none}

  /* ============ 响应式 ============ */
  @media (max-width:1180px){
    .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  }
  @media (max-width:1024px){
    h1{font-size:36px}
    h2{font-size:26px}
    .section{padding:68px 0}
    .hero{padding:56px 0 64px}
    .hero-inner{grid-template-columns:1fr;gap:44px}
    .hero-sub{max-width:none}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .g-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
    .review-card{flex:0 0 calc((100% - 22px)/2)}
    .float-version{left:8px}
    .float-rating{right:6px}
    .float-update{left:24px}
    .cta-band{padding:40px 32px}
  }
  @media (max-width:900px){
    .nav-row{flex-wrap:wrap;padding:10px 18px;gap:12px}
    .nav-toggle{display:flex;margin-left:auto}
    .search-form{order:3;flex:1 1 100%;max-width:none;min-width:0}
    .nav-links{display:none}
    .nav-links.open{display:block}
    .nav-links-inner{flex-direction:column;align-items:stretch;padding:10px 18px 16px;gap:2px}
    .nav-links-inner a{padding:12px 14px}
    .nav-links-inner a.active::after{left:14px;right:auto;width:26px;bottom:6px}
    .nav-actions .btn{display:none}
  }
  @media (max-width:640px){
    body{font-size:15.5px}
    h1{font-size:30px}
    h2{font-size:23px}
    h3{font-size:19px}
    .container{padding:0 18px}
    .section{padding:52px 0}
    .hero{padding:40px 0 56px}
    .card-grid{grid-template-columns:1fr;gap:16px}
    .news-grid{grid-template-columns:1fr}
    .g-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:30px;padding:46px 0 34px}
    .review-card{flex:0 0 86%}
    .hero-cta .btn{flex:1 1 auto}
    .float-card{position:static;margin-top:12px;min-width:0;display:inline-flex;flex-direction:column;margin-right:8px}
    .hero-visual{display:flex;flex-direction:column}
    .cta-band{padding:34px 22px;border-radius:20px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 100%}
    .site-footer{margin-top:60px;padding-bottom:74px}
    .mobile-cta{
      display:flex;position:fixed;left:0;right:0;bottom:0;z-index:70;
      background:rgba(255,255,255,.97);border-top:1px solid var(--border);
      padding:10px 16px;gap:12px;box-shadow:0 -8px 24px rgba(16,20,24,.08);
      backdrop-filter:blur(10px);
    }
    .mobile-cta .btn{flex:1 1 auto;height:46px;padding:0 12px;font-size:14.5px}
  }

/* roulang page: category1 */
:root{
  --brand:#00BFA6;
  --brand-deep:#00A38E;
  --brand-soft:#E6FAF6;
  --violet:#6C4DF6;
  --violet-soft:#EFEBFF;
  --lime:#D7FF3F;
  --bg:#F5F7F4;
  --dark:#0E1110;
  --surface:#FFFFFF;
  --text:#101418;
  --text-2:#4B5563;
  --text-3:#6B7280;
  --border:#DCE3DF;
  --danger:#E5484D;
  --success:#16A34A;
  --r-card:20px;
  --r-btn:12px;
  --shadow-sm:0 8px 24px rgba(16,20,24,.06);
  --shadow-hover:0 18px 40px rgba(0,191,166,.18);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:76px 0}
.section-sm{padding:56px 0}
.section-head{max-width:760px;margin-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-deep);text-transform:uppercase;
  background:var(--brand-soft);border:1px solid #C7F0E8;
  padding:5px 12px;border-radius:999px;margin-bottom:14px;
}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:16px}
.muted{color:var(--text-3);font-size:14px}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ------- 按钮 ------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn:focus-visible{outline:2px solid var(--lime);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:#06231E;box-shadow:0 8px 20px rgba(0,191,166,.28)}
.btn-primary:hover{background:#12D2B8;transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,191,166,.34)}
.btn-ghost{background:#fff;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand-deep)}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-light{background:#fff;color:#06231E}
.btn-light:hover{background:#EAFBF7;transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}

/* ------- 头部导航 ------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,247,244,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav-row{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  min-height:76px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand) 0%,#22E0C4 100%);
  color:#04241F;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(0,191,166,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-.02em}
.brand-text span{font-size:12px;color:var(--text-3);letter-spacing:.02em}

.search-form{position:relative;flex:1 1 auto;max-width:560px;display:flex;align-items:center}
.search-icon{position:absolute;left:16px;color:var(--text-3);display:flex;pointer-events:none}
.search-form input{
  width:100%;height:46px;border-radius:999px;
  border:1px solid var(--border);background:#fff;
  padding:0 96px 0 46px;font-size:14.5px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form input::placeholder{color:#9AA5AF}
.search-form input:hover{border-color:#C3D2CD}
.search-form input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(215,255,63,.55)}
.search-btn{
  position:absolute;right:6px;height:36px;padding:0 18px;
  border:none;border-radius:999px;cursor:pointer;
  background:var(--brand);color:#06231E;font-weight:600;font-size:14px;
  transition:background-color .2s ease,transform .2s ease;
}
.search-btn:hover{background:#12D2B8}
.search-btn:active{transform:translateY(1px)}

.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-hot{display:flex;gap:8px}
.nav-hot a{
  font-size:12.5px;color:var(--text-2);background:#fff;
  border:1px solid var(--border);padding:5px 11px;border-radius:999px;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.nav-hot a:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;color:var(--text);
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand);background:var(--brand-soft)}

.nav-links{border-top:1px solid #E8EDEA;background:rgba(255,255,255,.6)}
.nav-links-inner{
  max-width:var(--container);margin:0 auto;padding:8px 24px;
  display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;
}
.nav-links-inner::-webkit-scrollbar{display:none}
.nav-links-inner a{
  flex:0 0 auto;padding:8px 15px;border-radius:999px;
  font-size:14px;color:var(--text-2);font-weight:500;
  transition:background-color .2s ease,color .2s ease;
}
.nav-links-inner a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.nav-links-inner a.active{background:var(--dark);color:#F8FAF9;font-weight:600}

/* ------- 面包屑 ------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#9FB3AE}
.crumb a{color:#CFE9E3;transition:color .2s ease}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb span.sep{opacity:.55}

/* ------- 分类头图 ------- */
.cat-hero{position:relative;overflow:hidden;background:var(--dark);color:#F8FAF9;padding:56px 0 64px}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.3;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,17,16,.95) 0%,rgba(14,17,16,.78) 52%,rgba(0,191,166,.28) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero-grid{
  position:absolute;inset:0;z-index:1;opacity:.18;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:22px 22px;
}
.cat-hero h1{font-size:44px;margin:18px 0 16px;max-width:820px}
.cat-hero h1 em{font-style:normal;color:var(--brand)}
.cat-hero p.lead{max-width:720px;color:#CFDCD8;font-size:16.5px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat-chip{
  display:flex;align-items:center;gap:9px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:10px 16px;font-size:13.5px;color:#E6F3F0;
}
.stat-chip b{font-size:17px;color:var(--brand);font-weight:800}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ------- 筛选条 ------- */
.filter-bar{display:flex;gap:10px;overflow-x:auto;padding:4px 0 10px;scrollbar-width:thin}
.filter-bar::-webkit-scrollbar{height:6px}
.filter-bar::-webkit-scrollbar-thumb{background:#CBD8D3;border-radius:999px}
.filter-chip{
  flex:0 0 auto;padding:9px 18px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  font-size:14px;cursor:pointer;transition:all .2s ease;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}
.filter-chip.active{background:var(--dark);color:#F8FAF9;border-color:var(--dark);font-weight:600}
.filter-chip:focus-visible{outline:2px solid var(--lime);outline-offset:2px}

/* ------- 资源卡片 ------- */
.res-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.res-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.res-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:#0E1110}
.res-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.res-card:hover .res-cover img{transform:scale(1.03)}
.badges{position:absolute;top:10px;left:10px;display:flex;gap:6px;flex-wrap:wrap}
.badge{font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;line-height:1.6}
.badge-lime{background:var(--lime);color:#1B2500}
.badge-glass{background:rgba(14,17,16,.6);color:#F1F7F5;backdrop-filter:blur(6px)}
.badge-violet{background:var(--violet);color:#fff}
.res-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.res-body h3{font-size:17px;line-height:1.5}
.res-desc{font-size:14px;color:var(--text-2);line-height:1.7}
.res-meta{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:6px 14px}
.res-meta i{font-style:normal;color:var(--text);font-weight:600}
.res-foot{margin-top:auto;padding-top:10px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.link-more{font-size:13.5px;color:var(--brand-deep);font-weight:600;border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease}
.link-more:hover{border-color:var(--brand-deep)}
.link-more:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

/* ------- 双栏列表 / 榜单 ------- */
.panel{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-sm)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px}
.panel-head h3{font-size:19px}
.panel-head a{font-size:13.5px;color:var(--brand-deep);font-weight:600}
.panel-head a:hover{text-decoration:underline}
.latest-item{display:flex;gap:14px;padding:12px;border:1px solid transparent;border-radius:16px;transition:all .25s ease}
.latest-item + .latest-item{margin-top:6px;border-top:1px dashed var(--border);padding-top:14px}
.latest-item:hover{background:var(--brand-soft);border-color:#C7F0E8}
.latest-item img{width:104px;height:70px;border-radius:12px;object-fit:cover;flex:0 0 auto}
.latest-item h4{font-size:15.5px;font-weight:700;margin-bottom:5px}
.latest-item .muted{font-size:13px}
.tag-time{display:inline-block;font-size:12px;color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;padding:2px 9px;margin-right:8px}

.rank-list li{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px dashed var(--border)}
.rank-list li:last-child{border-bottom:none}
.rank-no{
  font-family:"DIN Alternate","Barlow Condensed",Arial,sans-serif;
  font-size:20px;font-weight:800;color:var(--brand);min-width:34px;letter-spacing:.02em;
}
.rank-info{flex:1;min-width:0}
.rank-info strong{display:block;font-size:15px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rank-info span{font-size:12.5px;color:var(--text-3)}
.rank-bar{height:6px;border-radius:999px;background:#EDF2EF;overflow:hidden;margin-top:7px}
.rank-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),#5CE8D3)}
.rank-hot{font-size:13px;color:var(--text-2);font-weight:600;white-space:nowrap}

/* ------- 步骤卡 ------- */
.step-card{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:18px;padding:26px 22px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:var(--brand);box-shadow:var(--shadow-hover)}
.step-no{
  font-family:"DIN Alternate","Barlow Condensed",Arial,sans-serif;
  font-size:13px;font-weight:800;letter-spacing:.1em;color:#fff;
  background:var(--dark);border-radius:999px;padding:4px 12px;display:inline-block;margin-bottom:14px;
}
.step-card h3{font-size:17px;margin-bottom:9px}
.step-card p{font-size:14px;color:var(--text-2)}

/* ------- FAQ ------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:16px;
  margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item[open]{border-color:var(--brand);box-shadow:0 10px 26px rgba(0,191,166,.12)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 56px 18px 22px;font-size:16.5px;font-weight:600;
  display:flex;align-items:center;gap:12px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";width:3px;height:20px;border-radius:999px;background:var(--brand);flex:0 0 auto;
}
.faq-item summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#06231E}
.faq-item summary:focus-visible{outline:2px solid var(--lime);outline-offset:-2px}
.faq-answer{padding:0 22px 20px 37px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ------- CTA ------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);color:#F8FAF9;
  border-radius:24px;padding:44px 40px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-3.png) center/cover no-repeat;opacity:.2;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,17,16,.94),rgba(0,191,166,.32));
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta-inner h2{font-size:28px;margin-bottom:10px}
.cta-inner p{color:#CFDCD8;font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ------- 页脚 ------- */
.site-footer{position:relative;background:var(--dark);color:#C9D6D2;margin-top:0;padding:64px 0 28px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--brand),var(--violet));
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand strong{color:#F8FAF9;font-size:16px;font-weight:800}
.footer-about{font-size:14px;line-height:1.8;color:#9FB3AE;max-width:340px}
.site-footer h4{color:#F8FAF9;font-size:15px;margin-bottom:16px;font-weight:700}
.site-footer ul li{margin-bottom:10px}
.site-footer ul a{font-size:14px;color:#AEBFBB;transition:color .2s ease,padding-left .2s ease}
.site-footer ul a:hover{color:var(--brand);padding-left:3px}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:#AEBFBB}
.footer-contact svg{flex:0 0 auto;margin-top:5px;color:var(--brand)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{
  font-size:12.5px;color:#BFD3CE;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:4px 12px;
}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8FA5A1;
}

@media (max-width:1280px){
  .cat-hero h1{font-size:40px}
}
@media (max-width:1023px){
  .nav-row{flex-wrap:wrap;min-height:auto;padding:12px 20px;gap:12px}
  .brand{flex:1 1 auto;order:1}
  .nav-toggle{display:flex;order:2}
  .search-form{order:3;flex-basis:100%;max-width:none}
  .nav-actions{order:4;margin-left:0;width:100%;justify-content:space-between}
  .nav-hot{display:none}
  .nav-links-inner{padding:8px 20px}
  .section{padding:60px 0}
  .section-sm{padding:46px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-about{max-width:none}
  .cat-hero{padding:44px 0 52px}
  .cat-hero h1{font-size:34px}
  .cta-band{padding:34px 26px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:46px 0}
  .section-head h2{font-size:24px}
  .cat-hero h1{font-size:30px;margin:14px 0 14px}
  .cat-hero p.lead{font-size:15px}
  .cta-inner h2{font-size:22px}
  .panel{padding:18px}
  .faq-item summary{font-size:15.5px;padding:16px 50px 16px 16px}
  .faq-answer{padding:0 16px 18px 31px}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr}
  .latest-item img{width:84px;height:60px}
  .cta-actions .btn{width:100%}
  .hero-cta .btn{width:100%}
}

/* roulang page: article */
:root{
  --primary:#00BFA6;
  --primary-strong:#0AA38E;
  --primary-ink:#04231E;
  --secondary:#6C4DF6;
  --accent:#D7FF3F;
  --bg:#F5F7F4;
  --dark:#0E1110;
  --surface:#FFFFFF;
  --text:#101418;
  --text-2:#4B5563;
  --text-3:#6B7280;
  --inverse:#F8FAF9;
  --border:#DCE3DF;
  --danger:#E5484D;
  --success:#16A34A;
  --radius-lg:22px;
  --radius-md:16px;
  --radius-sm:12px;
  --shadow-sm:0 8px 24px rgba(16,20,24,.06);
  --shadow-lg:0 18px 40px rgba(0,191,166,.18);
  --maxw:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
html body .container{width:100%;max-width:var(--maxw);margin:0 auto;padding-left:24px;padding-right:24px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:15px;line-height:1;
  border-radius:var(--radius-sm);padding:13px 24px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--primary);color:var(--primary-ink);box-shadow:0 8px 20px rgba(0,191,166,.25)}
.btn-primary:hover{background:#15D3BB;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--primary);color:#0B4A41}
.btn-outline:hover{background:#E9FAF7;transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{border-color:var(--primary);color:#7FF0DE;transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:13.5px;border-radius:10px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-row{
  width:100%;max-width:var(--maxw);margin:0 auto;
  padding:0 24px;height:78px;
  display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-weight:800;font-size:20px;
  display:grid;place-items:center;
  box-shadow:0 6px 16px rgba(0,191,166,.28);
}
.brand-text strong{display:block;font-size:16px;font-weight:800;letter-spacing:.2px;line-height:1.3}
.brand-text span{display:block;font-size:10.5px;color:var(--text-3);letter-spacing:1.4px;line-height:1.4}
.search-form{
  flex:1;max-width:600px;min-width:0;
  display:flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);
  border-radius:999px;padding:6px 6px 6px 16px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(215,255,63,.35)}
.search-icon{display:grid;place-items:center;color:var(--text-3);flex-shrink:0}
.search-form input{
  flex:1;min-width:0;height:36px;border:0;outline:0;background:transparent;
  font-size:14px;color:var(--text);font-family:inherit;
}
.search-form input::placeholder{color:#9AA6A1}
.search-btn{
  border:0;background:var(--primary);color:var(--primary-ink);
  font-weight:700;font-size:14px;height:36px;padding:0 20px;
  border-radius:999px;cursor:pointer;flex-shrink:0;
  transition:background-color .2s ease;
}
.search-btn:hover{background:#15D3BB}
.search-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.nav-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex-shrink:0}
.nav-hot{display:flex;gap:8px}
.nav-hot a{
  font-size:12.5px;color:var(--text-2);background:#EDF4F1;
  padding:6px 11px;border-radius:999px;white-space:nowrap;
  transition:color .2s ease,background-color .2s ease;
}
.nav-hot a:hover{color:var(--primary-strong);background:#DFF5F0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:#fff;color:var(--text);
  place-items:center;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary-strong)}
.nav-links{border-top:1px solid var(--border);background:#fff}
.nav-links-inner{
  width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;
  height:52px;display:flex;align-items:center;gap:6px;overflow-x:auto;
  scrollbar-width:none;
}
.nav-links-inner::-webkit-scrollbar{display:none}
.nav-links a{
  padding:9px 16px;border-radius:10px;font-size:14.5px;font-weight:500;
  color:var(--text-2);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease;
}
.nav-links a:hover{background:#EDF7F4;color:var(--primary-strong)}
.nav-links a.active{background:var(--text);color:#fff;font-weight:600}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;background-color:var(--dark);color:var(--inverse);overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.2;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.6;
}
.article-hero-inner{position:relative;z-index:2;padding:44px 0 104px;max-width:900px}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13px;color:#9FB0AA;flex-wrap:wrap}
.breadcrumb a{color:#BFCFC9;transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .crumb-current{color:#8A9B95;max-width:420px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.crumb-sep{color:#5C6B66}
.article-badge-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:22px}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  border:1px solid rgba(0,191,166,.5);background:rgba(0,191,166,.14);
  color:#6FF0DA;font-size:12.5px;font-weight:600;letter-spacing:.3px;
}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.article-title{
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.24;font-weight:800;letter-spacing:-.4px;
  margin:18px 0 0;color:#fff;
}
.article-lead{
  margin-top:18px;max-width:800px;
  font-size:16px;line-height:1.9;color:#C3D1CC;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;
  font-size:13.5px;color:#94A49E;
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{color:var(--primary);flex-shrink:0}

/* ============ 正文 ============ */
.article-main{padding:0 0 8px}
.article-card{
  position:relative;z-index:3;
  max-width:880px;margin:-60px auto 0;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  padding-bottom:44px;
}
.article-cover{margin:0}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{
  font-size:13px;color:var(--text-3);text-align:center;
  padding:12px 22px 0;
}
.article-body{
  padding:38px 52px 0;
  font-size:16.5px;line-height:1.95;color:#28313A;
}
.article-body h2{
  font-size:clamp(22px,2.2vw,27px);line-height:1.35;font-weight:700;
  color:var(--text);margin:40px 0 14px;padding-left:14px;
  border-left:4px solid var(--primary);border-radius:2px;
}
.article-body h2:first-child{margin-top:0}
.article-body h3{
  font-size:20px;line-height:1.4;font-weight:700;color:var(--text);
  margin:28px 0 10px;
}
.article-body p{margin:0 0 1.1em}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.5em}
.article-body li{margin:.5em 0}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--primary-strong);font-weight:700}
.article-body strong{color:var(--text);font-weight:700}
.article-body a{color:var(--primary-strong);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--secondary)}
.article-body blockquote{
  margin:24px 0;padding:18px 24px;
  background:#EAF8F5;border-left:4px solid var(--primary);
  border-radius:0 14px 14px 0;color:#21504A;font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-md);margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figure img{margin:0}
.article-body figcaption{font-size:13.5px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;
  display:block;overflow-x:auto;
}
.article-body th,.article-body td{border:1px solid var(--border);padding:11px 15px;text-align:left;white-space:nowrap}
.article-body th{background:#F1F7F5;color:var(--text);font-weight:700}
.article-body code{
  background:var(--dark);color:#9CF5E4;padding:2px 8px;border-radius:6px;
  font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:var(--dark);color:#D6E5E0;padding:20px;border-radius:14px;
  overflow-x:auto;margin:24px 0;font-size:14px;line-height:1.7;
}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--border);margin:34px 0}

.article-actions{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
  max-width:880px;margin:28px auto 0;
}
.empty-state{
  max-width:880px;margin:-60px auto 0;position:relative;z-index:3;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);padding:64px 32px;text-align:center;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* ============ 相关推荐 ============ */
.section{padding:78px 0}
.section-head{margin-bottom:34px;max-width:720px}
.section-kicker{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;color:var(--primary-strong);
  text-transform:uppercase;
}
.section-kicker::before{content:"";width:20px;height:2px;background:var(--primary);border-radius:2px}
.section-head h2{font-size:clamp(23px,2.4vw,30px);font-weight:800;line-height:1.32;margin-top:12px;letter-spacing:-.2px}
.section-head p{color:var(--text-2);font-size:15px;margin-top:12px}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rec-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.rec-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-lg)}
.rec-thumb{position:relative;overflow:hidden}
.rec-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.rec-card:hover .rec-thumb img{transform:scale(1.03)}
.rec-tag{
  position:absolute;top:12px;left:12px;
  background:rgba(14,17,16,.82);color:#8FF2DF;
  font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;
  backdrop-filter:blur(4px);
}
.rec-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.rec-body h3{font-size:17.5px;font-weight:700;line-height:1.5;margin-bottom:10px}
.rec-body p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:16px;flex:1}
.rec-meta{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--text-3)}
.rec-more{color:var(--primary-strong);font-weight:600;font-size:13px}
.rec-card:hover .rec-more{color:var(--secondary)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-md);margin-bottom:12px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#BFD9D2}
.faq-item.open{border-color:var(--primary);box-shadow:0 10px 26px rgba(0,191,166,.12)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:none;border:0;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--text);text-align:left;line-height:1.6;
}
.faq-q::before{
  content:"";width:3px;height:20px;border-radius:3px;
  background:var(--border);flex-shrink:0;transition:background-color .2s ease;
}
.faq-item.open .faq-q::before{background:var(--primary)}
.faq-q span.q-text{flex:1}
.faq-icon{
  width:26px;height:26px;border-radius:8px;flex-shrink:0;
  display:grid;place-items:center;
  background:#EEF6F3;color:var(--primary-strong);
  font-size:18px;font-weight:700;line-height:1;
  transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
.faq-q:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:520px}
.faq-a-inner{padding:0 24px 20px 46px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark);border-radius:26px;
  padding:46px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,77,246,.55),transparent 68%);
}
.cta-band::after{
  content:"";position:absolute;left:-40px;bottom:-120px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,191,166,.45),transparent 68%);
}
.cta-copy{position:relative;z-index:2;max-width:640px}
.cta-copy h2{font-size:clamp(22px,2.3vw,29px);font-weight:800;line-height:1.35;letter-spacing:-.2px}
.cta-copy p{margin-top:12px;font-size:15px;color:#B7C6C1;line-height:1.85}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;margin-top:88px;background:var(--dark);color:#B9C5C0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;
  gap:44px;padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand .brand-mark{width:38px;height:38px;font-size:18px;border-radius:12px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;letter-spacing:.2px}
.footer-about{font-size:14px;line-height:1.95;color:#95A39D}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{
  border:1px solid rgba(255,255,255,.14);color:#B9C5C0;
  font-size:12.5px;padding:5px 11px;border-radius:999px;
}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer ul li{margin-bottom:11px}
.site-footer ul li a{font-size:14px;color:#A9B6B1;transition:color .2s ease,padding-left .2s ease}
.site-footer ul li a:hover{color:var(--primary);padding-left:3px}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:#A9B6B1;line-height:1.7}
.footer-contact svg{color:var(--primary);margin-top:4px;flex-shrink:0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;display:flex;justify-content:space-between;align-items:center;
  gap:14px;flex-wrap:wrap;font-size:13px;color:#7E8B86;
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .nav-hot{display:none}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:34px}
}
@media (max-width:960px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{flex-direction:column;align-items:flex-start;padding:38px 32px}
}
@media (max-width:880px){
  .nav-row{height:auto;flex-wrap:wrap;padding:12px 20px;gap:12px}
  .search-form{order:3;flex:1 1 100%;max-width:none}
  .nav-toggle{display:grid;margin-left:auto}
  .nav-actions{margin-left:0}
  .nav-links{display:none}
  .nav-links.open{display:block}
  .nav-links-inner{height:auto;flex-wrap:wrap;padding:12px 20px;gap:8px}
  .article-body{padding:28px 24px 0}
  .article-card{padding-bottom:34px}
  .faq-a-inner{padding-left:24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:52px 0 34px}
}
@media (max-width:640px){
  html body .container{padding-left:18px;padding-right:18px}
  .nav-row{padding:10px 18px}
  .nav-links-inner{padding:10px 18px}
  .brand-text strong{font-size:15px}
  .brand-text span{font-size:10px;letter-spacing:1px}
  .article-hero-inner{padding:32px 0 78px}
  .article-lead{font-size:15px;line-height:1.85}
  .article-card{margin-top:-42px;border-radius:18px}
  .article-actions{margin-top:22px}
  .section{padding:52px 0}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .cta-band{padding:32px 22px;border-radius:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1;justify-content:center}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --primary:#00BFA6;
  --primary-deep:#00a48d;
  --secondary:#6C4DF6;
  --accent:#D7FF3F;
  --bg:#F5F7F4;
  --dark:#0E1110;
  --surface:#FFFFFF;
  --text:#101418;
  --text-2:#4B5563;
  --text-3:#6B7280;
  --border:#DCE3DF;
  --danger:#E5484D;
  --success:#16A34A;
  --radius-card:20px;
  --radius-btn:12px;
  --shadow-card:0 8px 24px rgba(16,20,24,.06);
  --shadow-hover:0 18px 40px rgba(0,191,166,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",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{font-family:inherit}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:76px 0}
.section-alt{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{font-size:30px;line-height:1.3;font-weight:800;letter-spacing:-.4px}
.section-head p{margin-top:14px;font-size:15px;color:var(--text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--primary-deep);background:rgba(0,191,166,.1);border-radius:999px;padding:5px 14px;margin-bottom:16px}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav-row{display:flex;align-items:center;gap:22px;max-width:1240px;margin:0 auto;padding:13px 24px;min-height:76px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{width:40px;height:40px;border-radius:13px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-weight:800;font-size:18px;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(0,191,166,.3)}
.brand-text strong{display:block;font-size:15px;font-weight:800;letter-spacing:-.2px}
.brand-text span{display:block;font-size:12px;color:var(--text-3);letter-spacing:.5px}
.search-form{flex:1 1 auto;max-width:600px;display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:5px 6px 5px 15px;transition:border-color .2s,box-shadow .2s}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(215,255,63,.5)}
.search-icon{color:var(--text-3);display:flex;align-items:center}
.search-form input{flex:1;border:0;outline:0;background:transparent;font-size:14px;color:var(--text);height:36px}
.search-form input::placeholder{color:#9AA3A0}
.search-btn{border:0;background:var(--primary);color:#052b26;font-size:14px;font-weight:700;padding:9px 20px;border-radius:999px;cursor:pointer;transition:background .2s,transform .15s}
.search-btn:hover{background:#00d4b8}
.search-btn:active{transform:translateY(1px)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-hot{display:flex;gap:8px}
.nav-hot a{font-size:12px;color:var(--text-3);border:1px dashed var(--border);border-radius:999px;padding:4px 11px;transition:color .2s,border-color .2s}
.nav-hot a:hover{color:var(--primary-deep);border-color:var(--primary)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;border-radius:var(--radius-btn);border:1px solid transparent;cursor:pointer;transition:transform .18s,background .2s,border-color .2s,box-shadow .2s,color .2s;text-align:center}
.btn-sm{font-size:14px;padding:9px 18px}
.btn-primary{background:var(--primary);color:#04241f;border-color:var(--primary)}
.btn-primary:hover{background:#00d4b8;transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,191,166,.28)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;color:var(--text);border-color:var(--primary)}
.btn-outline:hover{background:rgba(0,191,166,.1);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#F8FAF9;border-color:rgba(248,250,249,.4)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-lg{font-size:16px;padding:14px 30px}
.nav-toggle{display:none;background:#fff;border:1px solid var(--border);border-radius:10px;padding:8px;color:var(--text);cursor:pointer}
.nav-links{border-top:1px solid var(--border);background:rgba(245,247,244,.75)}
.nav-links-inner{max-width:1240px;margin:0 auto;padding:0 24px;display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav-links-inner::-webkit-scrollbar{display:none}
.nav-links a{padding:13px 16px;font-size:14px;font-weight:600;color:var(--text-2);border-bottom:2px solid transparent;white-space:nowrap;transition:color .2s,border-color .2s}
.nav-links a:hover{color:var(--primary-deep)}
.nav-links a.active{color:var(--text);border-bottom-color:var(--primary)}

/* ============ 分类头 ============ */
.cat-hero{position:relative;background-color:var(--dark);background-image:linear-gradient(115deg,rgba(14,17,16,.94) 0%,rgba(14,17,16,.78) 52%,rgba(14,17,16,.62) 100%),url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;color:#F8FAF9;overflow:hidden}
.cat-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:52px 52px;pointer-events:none}
.cat-hero-inner{position:relative;z-index:2;padding:60px 0 72px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(248,250,249,.65);margin-bottom:22px}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:rgba(248,250,249,.45)}
.cat-hero h1{font-size:44px;line-height:1.22;font-weight:800;letter-spacing:-1px;max-width:820px}
.cat-hero h1 em{font-style:normal;color:var(--accent)}
.cat-hero .lead{margin-top:18px;max-width:680px;font-size:16px;color:rgba(248,250,249,.82)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-tags span{font-size:13px;border:1px solid rgba(0,191,166,.5);background:rgba(0,191,166,.12);color:#B9FFF4;border-radius:999px;padding:5px 14px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.stat-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:18px 20px;box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
.stat-card b{display:block;font-size:24px;font-weight:800;color:#fff;letter-spacing:-.5px;font-family:"DIN Alternate","Barlow Condensed","PingFang SC",sans-serif}
.stat-card span{display:block;font-size:13px;color:rgba(248,250,249,.66);margin-top:4px}

/* ============ 卡片 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:transform .22s,border-color .22s,box-shadow .22s}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E9EEEB}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s}
.card:hover .card-media img{transform:scale(1.03)}
.card-badge{position:absolute;top:12px;left:12px;font-size:12px;font-weight:700;color:#04241f;background:var(--accent);border-radius:999px;padding:4px 12px}
.card-body{padding:20px 22px 22px}
.card-body h3{font-size:19px;font-weight:700;line-height:1.45}
.card-body p{margin-top:10px;font-size:14px;color:var(--text-2)}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;font-size:13px;color:var(--text-3)}
.card-meta i{font-style:normal;color:var(--border)}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--primary-deep);background:rgba(0,191,166,.1);border-radius:999px;padding:3px 11px}
.tag-purple{color:#5B3FE0;background:rgba(108,77,246,.12)}
.tag-yellow{color:#6B7A00;background:rgba(215,255,63,.45)}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:38px}
.timeline::before{content:"";position:absolute;left:11px;top:12px;bottom:12px;width:2px;background:linear-gradient(180deg,var(--primary),rgba(108,77,246,.4),rgba(220,227,223,.7))}
.tl-item{position:relative;margin-bottom:22px}
.tl-dot{position:absolute;left:-38px;top:26px;width:24px;height:24px;border-radius:50%;background:#fff;border:2px solid var(--primary);display:flex;align-items:center;justify-content:center}
.tl-dot::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary)}
.tl-item:first-child .tl-dot{border-color:var(--accent);box-shadow:0 0 0 5px rgba(215,255,63,.28)}
.tl-item:first-child .tl-dot::after{background:var(--accent)}
.tl-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-card);transition:transform .22s,border-color .22s,box-shadow .22s}
.tl-card:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.tl-head{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.ver-num{font-family:"DIN Alternate","Barlow Condensed","PingFang SC",sans-serif;font-size:24px;font-weight:800;letter-spacing:.5px}
.tl-date{font-size:13px;color:var(--text-3)}
.tl-list{margin-top:16px;display:grid;gap:9px}
.tl-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2)}
.tl-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--primary);opacity:.85}
.tl-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:18px;padding-top:16px;border-top:1px dashed var(--border);font-size:13px;color:var(--text-3)}
.tl-link{font-weight:600;color:var(--primary-deep);border-bottom:1px solid rgba(0,191,166,.35)}
.tl-link:hover{border-bottom-color:var(--primary-deep)}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:18px;padding:26px 22px;box-shadow:var(--shadow-card);transition:transform .22s,border-color .22s,box-shadow .22s}
.step:hover{transform:translateY(-4px);border-color:var(--secondary);box-shadow:0 18px 40px rgba(108,77,246,.16)}
.step-num{width:38px;height:38px;border-radius:12px;background:rgba(108,77,246,.12);color:#5B3FE0;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:16px}
.step h3{margin-top:16px;font-size:18px;font-weight:700}
.step p{margin-top:9px;font-size:14px;color:var(--text-2)}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:16px;margin-bottom:14px;overflow:hidden;transition:border-color .22s,box-shadow .22s}
.faq-item[open]{border-color:var(--primary);box-shadow:var(--shadow-card)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:20px 22px;font-size:17px;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:"";width:3px;height:20px;border-radius:2px;background:var(--primary);flex-shrink:0}
.faq-plus{margin-left:auto;flex-shrink:0;width:26px;height:26px;border-radius:50%;background:rgba(0,191,166,.12);color:var(--primary-deep);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;line-height:1;transition:transform .2s,background .2s}
.faq-item[open] .faq-plus{background:var(--primary);color:#04241f;transform:rotate(45deg)}
.faq-item p{padding:0 22px 22px 39px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ============ CTA ============ */
.cta-band{background:var(--dark);color:#F8FAF9;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--primary),var(--secondary))}
.cta-band::after{content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(0,191,166,.28),transparent 68%)}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;padding:56px 0}
.cta-inner h2{font-size:28px;font-weight:800;line-height:1.35;max-width:620px}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(248,250,249,.75);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(248,250,249,.75);padding-top:4px;position:relative}
.site-footer::before{content:"";display:block;height:1px;background:linear-gradient(90deg,var(--primary),var(--secondary))}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding:60px 0 40px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800}
.footer-about{font-size:14px;line-height:1.85;color:rgba(248,250,249,.66)}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.site-footer ul li{margin-bottom:11px;font-size:14px}
.site-footer ul a{color:rgba(248,250,249,.7);transition:color .2s}
.site-footer ul a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;color:rgba(248,250,249,.7)}
.footer-contact svg{margin-top:5px;flex-shrink:0;color:var(--primary)}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-tags span{font-size:12px;border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:4px 11px;color:rgba(248,250,249,.68)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0 30px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(248,250,249,.55)}

/* ============ 响应式 ============ */
@media (max-width:1080px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .nav-hot{display:none}
}
@media (max-width:860px){
  .nav-row{flex-wrap:wrap;gap:12px;padding:12px 20px}
  .nav-toggle{display:flex;margin-left:auto}
  .brand{order:1}
  .nav-actions{order:2;margin-left:0}
  .nav-toggle{order:3}
  .search-form{order:4;flex:1 0 100%;max-width:none}
  .nav-links{display:none}
  .nav-links.open{display:block}
  .nav-links-inner{flex-direction:column;padding:6px 20px 14px;gap:0}
  .nav-links a{padding:12px 4px;border-bottom:1px solid var(--border);border-left:3px solid transparent}
  .nav-links a.active{border-bottom-color:var(--border);border-left-color:var(--primary);padding-left:12px}
  .cat-hero h1{font-size:34px}
  .cat-hero-inner{padding:44px 0 56px}
  .section{padding:56px 0}
  .section-head h2{font-size:25px}
  .grid-3,.grid-4{grid-template-columns:1fr}
  .cta-inner{padding:44px 0}
  .cta-inner h2{font-size:23px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .nav-row{padding:11px 16px}
  .brand-text span{display:none}
  .stat-grid{grid-template-columns:1fr;gap:12px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 30px}
  .cat-hero h1{font-size:28px;line-height:1.3}
  .cat-hero .lead{font-size:15px}
  .timeline{padding-left:26px}
  .timeline::before{left:5px}
  .tl-dot{left:-26px;width:18px;height:18px;top:24px}
  .tl-dot::after{width:6px;height:6px}
  .tl-card{padding:18px 18px}
  .ver-num{font-size:21px}
  .faq-item summary{font-size:16px;padding:17px 18px}
  .faq-item p{padding:0 18px 18px 35px}
}

/* roulang page: category3 */
:root{
  --primary:#00BFA6;
  --primary-dark:#00806F;
  --primary-soft:#E6FBF7;
  --secondary:#6C4DF6;
  --accent:#D7FF3F;
  --bg:#F5F7F4;
  --dark:#0E1110;
  --surface:#FFFFFF;
  --text:#101418;
  --text-2:#4B5563;
  --text-3:#6B7280;
  --line:#DCE3DF;
  --danger:#E5484D;
  --ok:#16A34A;
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(16,20,24,.06);
  --shadow-hover:0 18px 40px rgba(0,191,166,.18);
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{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(--accent);outline-offset:2px;border-radius:4px}

.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:78px 0}
.section-tight{padding:56px 0}
.section-plain{background:transparent}
.section-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(245,247,244,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  max-width:var(--container);margin:0 auto;
  padding:11px 24px;
  display:flex;align-items:center;gap:18px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:13px;flex:0 0 40px;
  background:linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;font-size:19px;font-weight:800;
  display:grid;place-items:center;
  box-shadow:0 8px 18px rgba(0,191,166,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap}
.brand-text span{font-size:11.5px;color:var(--text-3);letter-spacing:.8px}

.search-form{
  flex:1;max-width:600px;position:relative;
  display:flex;align-items:center;
  background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:4px 4px 4px 14px;
  transition:border-color .2s,box-shadow .2s;
}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(215,255,63,.55)}
.search-icon{color:var(--text-3);display:grid;place-items:center;margin-right:8px;flex:0 0 auto}
.search-form input{
  flex:1;min-width:0;height:42px;border:0;outline:none;
  background:transparent;font-size:14.5px;
}
.search-form input::placeholder{color:#9AA5A0}
.search-btn{
  flex:0 0 auto;height:38px;padding:0 18px;border:0;border-radius:10px;
  background:var(--primary);color:#04231F;font-size:14px;font-weight:700;cursor:pointer;
  transition:background .2s,transform .18s;
}
.search-btn:hover{background:#17D3B8}
.search-btn:active{transform:translateY(1px)}

.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-hot{display:flex;gap:8px}
.nav-hot a{
  font-size:12.5px;color:var(--text-2);padding:5px 11px;border-radius:999px;
  background:#EDF1EE;transition:background .2s,color .2s;white-space:nowrap;
}
.nav-hot a:hover{background:var(--primary-soft);color:var(--primary-dark)}

.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;place-items:center;color:var(--text);
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary-dark)}

.nav-links{border-top:1px solid var(--line);background:rgba(255,255,255,.6)}
.nav-links-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  display:flex;gap:6px;align-items:center;height:52px;
}
.nav-links a{
  padding:8px 15px;border-radius:10px;font-size:14.5px;font-weight:600;
  color:var(--text-2);transition:background .2s,color .2s;white-space:nowrap;
}
.nav-links a:hover{background:var(--primary-soft);color:var(--primary-dark)}
.nav-links a.active{background:rgba(0,191,166,.14);color:var(--primary-dark)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:12px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s,background .2s,border-color .2s,color .2s,box-shadow .2s;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#04231F;box-shadow:0 8px 20px rgba(0,191,166,.26)}
.btn-primary:hover{background:#17D3B8;transform:translateY(-2px);box-shadow:0 14px 30px rgba(0,191,166,.34)}
.btn-outline{background:#fff;border-color:var(--primary);color:#0B3B34}
.btn-outline:hover{background:var(--primary-soft)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.4);color:#F8FAF9}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}

/* ---------- category hero ---------- */
.cat-hero{position:relative;background:var(--dark);color:#F8FAF9;overflow:hidden;padding:52px 0 66px}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.26;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 82% 18%, rgba(108,77,246,.42), transparent 46%),
    linear-gradient(96deg, rgba(14,17,16,.95) 0%, rgba(14,17,16,.78) 52%, rgba(14,17,16,.55) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(248,250,249,.62);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span{color:rgba(248,250,249,.4)}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,46px);
  line-height:1.22;font-weight:800;letter-spacing:.4px;margin-bottom:16px;
}
.cat-hero h1 em{font-style:normal;color:var(--accent)}
.cat-hero .lead{
  font-size:16.5px;line-height:1.85;color:rgba(248,250,249,.78);
  max-width:720px;margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:28px}
.hero-tags span{
  font-size:13px;padding:6px 13px;border-radius:999px;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);
  color:rgba(248,250,249,.86);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px}
.hero-stat{
  min-width:150px;flex:1 1 150px;
  border:1px solid rgba(255,255,255,.14);border-radius:16px;
  background:rgba(255,255,255,.05);padding:14px 18px;
}
.hero-stat strong{display:block;font-size:22px;font-weight:800;color:var(--accent);letter-spacing:.5px}
.hero-stat span{font-size:13px;color:rgba(248,250,249,.7)}

/* ---------- section head ---------- */
.section-head{max-width:780px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;
  color:var(--primary-dark);margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--primary)}
.section-head h2{font-size:clamp(24px,3vw,31px);font-weight:800;line-height:1.34;margin-bottom:12px}
.section-head p{font-size:15.5px;color:var(--text-2);line-height:1.85}

/* ---------- grid & cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#E7EBE8}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.03)}
.card-badge{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:12px;padding:4px 11px;border-radius:999px;
  background:rgba(14,17,16,.78);color:#F8FAF9;
  backdrop-filter:blur(4px);
}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:700;line-height:1.55}
.card-body p{font-size:14.5px;color:var(--text-2);line-height:1.78}
.card-meta{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:auto;padding-top:8px;
  font-size:12.5px;color:var(--text-3);
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--primary-dark);
  transition:gap .2s,color .2s;
}
.card-link:hover{gap:10px;color:var(--primary)}
.card-link svg{flex:0 0 auto}

/* ---------- faq ---------- */
.filter-row{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 12px;
  margin-bottom:26px;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.filter-row::-webkit-scrollbar{display:none}
.filter-chip{
  flex:0 0 auto;padding:9px 19px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--text-2);cursor:pointer;
  transition:background .2s,border-color .2s,color .2s,transform .18s;
}
.filter-chip:hover{border-color:var(--primary);color:var(--primary-dark)}
.filter-chip:active{transform:translateY(1px)}
.filter-chip.is-active{background:var(--primary);border-color:var(--primary);color:#04231F}

.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:16px;margin-bottom:14px;overflow:hidden;
  transition:border-color .22s,box-shadow .22s;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--primary);opacity:0;transition:opacity .22s;
}
.faq-item.is-open{border-color:var(--primary);box-shadow:0 12px 30px rgba(0,191,166,.13)}
.faq-item.is-open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;border:0;background:none;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--text);
}
.faq-q:hover{color:var(--primary-dark)}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary-dark);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:currentColor;border-radius:2px;
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px;transition:transform .25s ease}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-item.is-open .faq-a{max-height:640px}
.faq-a-inner{
  padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--text-2);
}
.faq-a-inner strong{color:var(--text);font-weight:700}

/* ---------- ask form ---------- */
.ask-wrap{display:grid;grid-template-columns:0.92fr 1.08fr;gap:44px;align-items:start}
.ask-side h2{font-size:clamp(23px,2.8vw,29px);font-weight:800;line-height:1.35;margin-bottom:14px}
.ask-side p{font-size:15.5px;color:var(--text-2);line-height:1.88;margin-bottom:12px}
.ask-points{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.ask-points li{display:flex;gap:10px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.ask-points svg{flex:0 0 auto;margin-top:5px;color:var(--primary)}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:28px;box-shadow:var(--shadow);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--text-2);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;height:50px;padding:0 14px;border:1px solid var(--line);
  border-radius:12px;background:#FBFCFB;font-size:14.5px;outline:none;
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{height:auto;min-height:124px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(215,255,63,.5);
}
.field-error{display:none;font-size:13px;color:var(--danger);margin-top:6px}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--danger)}
.field.has-error .field-error{display:block}
.form-note{
  display:none;margin-top:14px;padding:11px 14px;border-radius:12px;font-size:14px;
}
.form-note.is-ok{display:block;background:#E9F9EF;color:#0F7A3D;border:1px solid #BCE8CD}
.form-note.is-error{display:block;background:#FDECEC;color:#B3252A;border:1px solid #F5C6C7}
.form-hint{font-size:12.5px;color:var(--text-3);margin-top:12px;line-height:1.7}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:30px;
  background:var(--dark);color:#F8FAF9;
  border-radius:26px;padding:44px 46px;
  border:1px solid rgba(255,255,255,.08);
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,77,246,.55),transparent 68%);
}
.cta-band::before{
  content:"";position:absolute;left:-40px;bottom:-80px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,191,166,.38),transparent 70%);
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(22px,2.7vw,28px);font-weight:800;line-height:1.36;margin-bottom:10px}
.cta-copy p{font-size:15px;color:rgba(248,250,249,.75);max-width:560px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--dark);color:#C8D0CC;margin-top:86px}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand strong{font-size:16px;font-weight:800}
.footer-about{font-size:14px;line-height:1.85;color:#9AA5A0;margin-bottom:16px;max-width:390px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{
  font-size:12px;padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);color:#AEB8B3;
}
.site-footer h4{font-size:14.5px;font-weight:700;color:#fff;margin-bottom:16px}
.site-footer ul{display:flex;flex-direction:column;gap:10px}
.site-footer ul a{font-size:14px;color:#9AA5A0;transition:color .2s}
.site-footer ul a:hover{color:var(--primary)}
.footer-contact li{display:flex;gap:9px;font-size:13.5px;color:#9AA5A0;line-height:1.7}
.footer-contact svg{flex:0 0 auto;margin-top:5px;color:var(--primary)}
.footer-contact{margin-bottom:18px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 34px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:#7E8A85;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ask-wrap{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-row{flex-wrap:wrap;gap:12px;padding:10px 18px}
  .brand{order:1}
  .nav-actions{order:2;margin-left:auto}
  .nav-toggle{order:3;display:grid}
  .nav-hot{display:none}
  .search-form{order:4;flex:1 1 100%;max-width:100%}
  .nav-links{display:none}
  .nav-links.is-open{display:block}
  .nav-links-inner{height:auto;padding:8px 18px 12px;overflow-x:auto;scrollbar-width:none}
  .nav-links-inner::-webkit-scrollbar{display:none}
  .section{padding:58px 0}
  .section-tight{padding:44px 0}
  .cta-band{flex-direction:column;align-items:flex-start;padding:34px 28px}
  .cat-hero{padding:40px 0 50px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .grid-3{grid-template-columns:1fr;gap:18px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 30px}
  .hero-stats{gap:10px}
  .hero-stat{min-width:130px;padding:12px 14px}
  .hero-actions .btn{flex:1 1 100%}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .faq-q{font-size:16px;padding:16px 16px}
  .faq-a-inner{padding:0 16px 18px}
  .form-card{padding:20px}
  .card-body{padding:16px 16px 20px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .brand-text strong{font-size:13.5px}
  .brand-text span{display:none}
  .search-btn{padding:0 14px}
  .cat-hero h1{font-size:29px}
}

/* roulang page: category4 */
:root{
  --primary:#00BFA6;
  --primary-deep:#0A6E60;
  --secondary:#6C4DF6;
  --accent:#D7FF3F;
  --bg:#F5F7F4;
  --dark:#0E1110;
  --card:#FFFFFF;
  --text:#101418;
  --text-2:#4B5563;
  --text-3:#6B7280;
  --inverse:#F8FAF9;
  --border:#DCE3DF;
  --border-hover:#00BFA6;
  --error:#E5484D;
  --success:#16A34A;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:18px;
  --shadow:0 8px 24px rgba(16,20,24,.06);
  --shadow-hover:0 18px 40px rgba(0,191,166,.18);
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:"DIN Alternate","Barlow Condensed","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.mono{font-family:var(--font-num);letter-spacing:.02em}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(245,247,244,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(16,20,24,.08)}
.nav-row{
  display:flex;align-items:center;gap:22px;
  max-width:1240px;margin:0 auto;padding:0 24px;height:76px;
}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),#05A08C);
  color:#06231F;font-weight:800;font-size:17px;
  box-shadow:0 6px 16px rgba(0,191,166,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.brand-text span{font-size:11.5px;color:var(--text-3);letter-spacing:.04em}

.search-form{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:600px;height:46px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding-left:44px;padding-right:6px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,191,166,.16)}
.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-3);display:flex}
.search-form input{
  flex:1;height:100%;border:0;outline:none;background:transparent;
  font-family:inherit;font-size:14.5px;color:var(--text);
}
.search-form input::placeholder{color:#9AA5A1}
.search-btn{
  height:36px;padding:0 18px;border:0;border-radius:999px;cursor:pointer;
  background:var(--primary);color:#06231F;font-family:inherit;
  font-size:14px;font-weight:600;transition:background .2s ease,transform .2s ease;
}
.search-btn:hover{background:#14D3B8}
.search-btn:active{transform:translateY(1px)}
.search-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.nav-actions{display:flex;align-items:center;gap:12px;flex:none}
.nav-hot{display:flex;align-items:center;gap:8px}
.nav-hot a{
  font-size:12.5px;color:var(--text-2);padding:5px 11px;border-radius:999px;
  border:1px solid var(--border);transition:.2s ease;white-space:nowrap;
}
.nav-hot a:hover{border-color:var(--primary);color:var(--primary-deep);background:#EAF7F4}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;cursor:pointer;
  border:1px solid var(--border);background:#fff;color:var(--text);
  align-items:center;justify-content:center;transition:.2s ease;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary-deep)}
.nav-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.nav-links{border-top:1px solid var(--border);background:rgba(255,255,255,.6)}
.nav-links-inner{
  display:flex;align-items:center;gap:6px;
  max-width:1240px;margin:0 auto;padding:0 24px;height:48px;
}
.nav-links-inner a{
  font-size:14.5px;color:var(--text-2);padding:8px 16px;border-radius:10px;
  transition:background .2s ease,color .2s ease;white-space:nowrap;
}
.nav-links-inner a:hover{background:#EAF7F4;color:var(--primary-deep)}
.nav-links-inner a.active{background:#E3F7F2;color:var(--primary-deep);font-weight:700}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-size:15px;font-weight:600;line-height:1;
  padding:14px 26px;border-radius:var(--radius-btn);
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#06231F}
.btn-primary:hover{background:#14D3B8;transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,191,166,.3)}
.btn-secondary{background:#fff;border-color:var(--primary);color:var(--primary-deep)}
.btn-secondary:hover{background:#E7FAF6;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:rgba(248,250,249,.34);color:var(--inverse)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-sm{padding:10px 20px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}

/* ============ 通用标题 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;
  color:var(--primary-deep);background:#E6F7F3;border-radius:999px;
  padding:6px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:44px}
.section-title{font-size:31px;line-height:1.28;font-weight:800;letter-spacing:-.015em;margin-bottom:12px}
.section-sub{font-size:15.5px;color:var(--text-2);max-width:760px;line-height:1.85}

/* ============ 页头 Banner ============ */
.page-hero{
  position:relative;overflow:hidden;color:var(--inverse);
  background-color:var(--dark);
  background-image:
    linear-gradient(180deg,rgba(14,17,16,.93),rgba(14,17,16,.88)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(0,191,166,.22);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:46px 46px;
}
.page-hero .container{position:relative;z-index:2;padding-top:48px;padding-bottom:72px}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(248,250,249,.6);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a{transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(248,250,249,.32)}
.breadcrumb .current{color:var(--inverse)}

.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.08em;color:#B9F4EA;background:rgba(0,191,166,.14);
  border:1px solid rgba(0,191,166,.4);border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.hero-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(0,191,166,.18)}
.page-hero h1{
  font-size:41px;line-height:1.2;font-weight:800;letter-spacing:-.025em;margin-bottom:18px;
}
.page-hero h1 .hl{color:var(--primary)}
.hero-lead{font-size:16.5px;line-height:1.88;color:rgba(248,250,249,.76);max-width:620px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.hero-badges span{
  display:inline-flex;align-items:center;gap:7px;font-size:12.8px;
  color:rgba(248,250,249,.86);border:1px solid rgba(248,250,249,.18);
  background:rgba(255,255,255,.04);border-radius:999px;padding:7px 14px;
}
.hero-badges svg{color:var(--primary);flex:none}

.hero-visual{position:relative}
.hero-visual > img{
  width:100%;height:210px;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid rgba(255,255,255,.14);
}
.status-card{
  position:relative;z-index:2;margin-top:-52px;margin-left:22px;margin-right:-8px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:22px;padding:24px 26px;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.status-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.12)}
.status-head strong{font-size:15px;color:var(--inverse)}
.status-head em{font-style:normal;font-size:12.5px;color:rgba(248,250,249,.5)}
.status-row{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.13);font-size:14px}
.status-row:last-child{border-bottom:0;padding-bottom:2px}
.status-row span{color:rgba(248,250,249,.66)}
.status-row b{color:var(--inverse);font-weight:600}
.pill-ok{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:#8CF0B4;background:rgba(22,163,74,.16);border:1px solid rgba(22,163,74,.36);border-radius:999px;padding:3px 11px}
.pill-accent{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;color:var(--accent);background:rgba(215,255,63,.12);border:1px solid rgba(215,255,63,.34);border-radius:999px;padding:3px 11px}

/* ============ 保障条 ============ */
.assurance{background:#EAF7F4;border-top:1px solid #D2EDE6;border-bottom:1px solid #D2EDE6}
.assurance-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.assure-item{display:flex;gap:14px;align-items:flex-start;padding:30px 26px;border-bottom:1px dashed #C7E6DF}
.assure-item:last-child{border-bottom:0}
.assure-icon{
  width:44px;height:44px;flex:none;border-radius:13px;background:#fff;
  border:1px solid #CFEDE6;color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;
}
.assure-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.assure-item p{font-size:13.6px;line-height:1.72;color:var(--text-2)}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:28px 24px;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.step:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--shadow-hover)}
.step-num{
  font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;
  color:var(--primary);opacity:.9;margin-bottom:16px;
}
.step h3{font-size:18px;font-weight:700;margin-bottom:10px}
.step p{font-size:14px;line-height:1.78;color:var(--text-2)}

/* ============ 版本安全对照表 ============ */
.table-wrap{
  overflow-x:auto;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow);
  -webkit-overflow-scrolling:touch;
}
table.compare{width:100%;min-width:860px;border-collapse:collapse}
table.compare thead th{
  background:#F1F6F4;font-size:12.6px;font-weight:600;color:var(--text-3);
  letter-spacing:.06em;text-align:left;padding:15px 20px;white-space:nowrap;
  border-bottom:1px solid #E4EBE7;
}
table.compare tbody td{
  padding:18px 20px;font-size:14.5px;color:var(--text-2);
  border-bottom:1px solid #EDF2EF;vertical-align:middle;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr{transition:background .2s ease}
table.compare tbody tr:hover{background:#FAFDFB}
.version-cell{font-family:var(--font-num);font-size:16px;font-weight:700;color:var(--text)}
.badge-ok{display:inline-flex;align-items:center;gap:6px;font-size:12.6px;font-weight:600;color:#0F7B3E;background:#E6F7EC;border-radius:999px;padding:4px 12px}
.badge-warn{display:inline-flex;align-items:center;gap:6px;font-size:12.6px;font-weight:600;color:#8A6412;background:#FBF4DC;border-radius:999px;padding:4px 12px}
.badge-plan{display:inline-flex;align-items:center;gap:6px;font-size:12.6px;font-weight:600;color:var(--primary-deep);background:#E6F7F3;border-radius:999px;padding:4px 12px}
.table-link{font-size:13.6px;font-weight:600;color:var(--primary-deep);border-bottom:1px solid rgba(0,191,166,.4);transition:.2s ease}
.table-link:hover{color:var(--primary);border-color:var(--primary)}

/* ============ 账号防护 ============ */
.guard-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:center}
.guard-media{position:relative}
.guard-media img{width:100%;height:400px;object-fit:cover;border-radius:24px;box-shadow:var(--shadow)}
.guard-float{
  position:absolute;left:-16px;bottom:26px;background:#fff;border:1px solid var(--border);
  border-radius:16px;padding:16px 20px;box-shadow:0 16px 34px rgba(16,20,24,.1);
  display:flex;align-items:center;gap:12px;
}
.guard-float .dot{width:38px;height:38px;border-radius:12px;background:#E6F7F3;color:var(--primary-deep);display:flex;align-items:center;justify-content:center;flex:none}
.guard-float strong{display:block;font-size:14.5px;font-weight:700}
.guard-float span{font-size:12.5px;color:var(--text-3)}
.guard-list li{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--border)}
.guard-list li:first-child{padding-top:0}
.guard-list li:last-child{border-bottom:0;padding-bottom:0}
.guard-check{
  width:26px;height:26px;flex:none;border-radius:50%;margin-top:5px;
  background:#E6F7F3;color:var(--primary-deep);
  display:flex;align-items:center;justify-content:center;
}
.guard-list h3{font-size:16.5px;font-weight:700;margin-bottom:6px}
.guard-list p{font-size:14.2px;line-height:1.78;color:var(--text-2)}

/* ============ FAQ ============ */
.faq{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:16px;
  margin-bottom:12px;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:#BFE9E0;box-shadow:0 10px 26px rgba(0,191,166,.1)}
.faq-item summary{
  position:relative;list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  border-radius:3px;background:var(--primary);opacity:0;transition:opacity .22s ease;
}
.faq-item[open] summary::before{opacity:1}
.faq-item summary:hover{color:var(--primary-deep)}
.faq-item summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.faq-icon{position:relative;width:26px;height:26px;flex:none;border-radius:50%;background:#EAF7F4}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary-deep);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px;transition:transform .25s ease}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.88;color:var(--text-2)}

/* ============ 联系表单 ============ */
.contact-wrap{display:grid;grid-template-columns:.86fr 1.14fr;gap:36px;align-items:stretch}
.contact-panel{
  background:var(--dark);color:var(--inverse);border-radius:24px;padding:36px 34px;
  position:relative;overflow:hidden;
}
.contact-panel::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.contact-panel h3{font-size:20px;font-weight:700;margin-bottom:14px;color:#fff}
.contact-panel > p{font-size:14.2px;line-height:1.85;color:rgba(248,250,249,.68);margin-bottom:24px}
.contact-steps li{display:flex;gap:12px;font-size:14px;line-height:1.75;color:rgba(248,250,249,.78);padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.12)}
.contact-steps li:last-child{border-bottom:0}
.contact-steps b{
  width:22px;height:22px;flex:none;border-radius:50%;margin-top:4px;
  background:rgba(0,191,166,.2);color:var(--primary);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.contact-mail{
  margin-top:26px;display:flex;align-items:center;gap:10px;font-size:13.6px;
  color:rgba(248,250,249,.8);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:13px 16px;
}
.contact-mail svg{color:var(--primary);flex:none}

.form-card{
  background:var(--card);border:1px solid var(--border);border-radius:24px;
  padding:34px 32px;box-shadow:var(--shadow);
}
.form-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.form-card > p{font-size:13.8px;color:var(--text-3);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--text-2);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--text);
  background:#fff;border:1px solid var(--border);border-radius:13px;
  padding:0 16px;height:52px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;min-height:132px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#9AA5A1}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(215,255,63,.55);
}
.field input:invalid,.field textarea:invalid{border-color:var(--border)}
.form-hint{font-size:12.5px;color:var(--text-3);margin-top:8px;line-height:1.7}
.form-note{
  display:flex;gap:9px;align-items:flex-start;font-size:12.8px;line-height:1.7;
  color:var(--text-2);background:#F3F8F6;border:1px solid #DCEBE6;
  border-radius:12px;padding:12px 14px;margin:6px 0 20px;
}
.form-note svg{color:var(--primary-deep);flex:none;margin-top:3px}

/* ============ CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);color:var(--inverse);
  border-radius:26px;padding:46px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;
}
.cta-band::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(108,77,246,.28),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:27px;font-weight:800;line-height:1.35;margin-bottom:10px;position:relative;z-index:2}
.cta-band p{font-size:14.5px;color:rgba(248,250,249,.7);max-width:560px;position:relative;z-index:2}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--dark);color:rgba(248,250,249,.72);
  padding:66px 0 28px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;font-size:15px;border-radius:10px}
.footer-brand strong{font-size:15.5px;color:#fff;font-weight:800}
.footer-about{font-size:13.8px;line-height:1.85;color:rgba(248,250,249,.6);max-width:340px;margin-bottom:18px}
.site-footer h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:18px}
.site-footer ul li a{display:inline-block;font-size:14px;color:rgba(248,250,249,.66);padding:5px 0;transition:color .2s ease,transform .2s ease}
.site-footer ul li a:hover{color:var(--primary);transform:translateX(3px)}
.site-footer ul li a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px}
.footer-tags span{
  font-size:12px;padding:5px 11px;border-radius:999px;
  border:1px solid rgba(248,250,249,.16);color:rgba(248,250,249,.66);
}
.footer-contact li{display:flex;gap:9px;align-items:flex-start;font-size:13.4px;line-height:1.72;color:rgba(248,250,249,.64);padding:5px 0}
.footer-contact svg{flex:none;margin-top:4px;color:var(--primary)}
.footer-bottom{
  margin-top:46px;padding-top:22px;border-top:1px solid rgba(248,250,249,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.8px;color:rgba(248,250,249,.48);
}

/* ============ 响应式 ============ */
@media (min-width:1025px){
  .assure-item{border-bottom:0;border-right:1px dashed #C7E6DF}
  .assure-item:last-child{border-right:0}
}
@media (max-width:1024px){
  .section{padding:68px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .page-hero h1{font-size:36px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .guard-grid{grid-template-columns:1fr;gap:40px}
  .guard-media img{height:320px}
  .contact-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px}
  .cta-band{padding:38px 34px}
}
@media (max-width:900px){
  .nav-row{height:auto;flex-wrap:wrap;gap:12px;padding:12px 18px;row-gap:12px}
  .brand{order:1}
  .nav-toggle{order:2;display:inline-flex;margin-left:auto}
  .search-form{order:3;flex-basis:100%;max-width:none}
  .nav-actions{order:4;flex-basis:100%;justify-content:space-between}
  .nav-hot{display:flex;overflow-x:auto}
  .nav-links{display:none;background:#fff}
  .nav-links.open{display:block}
  .nav-links-inner{
    height:auto;padding:12px 18px;gap:8px;overflow-x:auto;
    -webkit-overflow-scrolling:touch;
  }
  .nav-links-inner::-webkit-scrollbar{height:0}
  .nav-links-inner a{flex:none}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-title{font-size:25px}
  .page-hero .container{padding-top:34px;padding-bottom:56px}
  .page-hero h1{font-size:32px}
  .hero-lead{font-size:15.5px}
  .hero-visual > img{height:180px}
  .status-card{margin-left:12px;margin-right:0;padding:20px 20px}
  .assurance-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .guard-media img{height:250px}
  .guard-float{left:0;bottom:16px;padding:13px 16px}
  .guard-float .dot{width:32px;height:32px}
  .form-card{padding:26px 22px}
  .form-row{grid-template-columns:1fr}
  .faq-item summary{font-size:15.8px;padding:17px 18px}
  .faq-answer{padding:0 18px 20px;font-size:14.4px}
  .cta-band{border-radius:20px;padding:30px 24px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 46%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .page-hero h1{font-size:28px}
  .hero-cta .btn{flex:1 1 100%}
  .hero-badges span{font-size:12px;padding:6px 11px}
  .status-row{font-size:13.2px}
  .section-title{font-size:23px}
  .step{padding:22px 20px}
  .contact-panel{padding:28px 22px}
}