/* roulang page: index */
:root{
    --bg-base:#060B12;
    --bg-raise:#0C1520;
    --glass:rgba(255,255,255,.045);
    --line:rgba(255,255,255,.09);
    --brand:#35D6C0;
    --brand-deep:#1FA694;
    --smart:#4C7DFF;
    --amber:#FFB067;
    --t1:#E9F2F6;
    --t2:#A3B6C2;
    --t3:#6C808D;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:12px;
    --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg-base);
    color:var(--t1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button{font-family:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media(min-width:768px){.container{padding:0 32px}}

  /* ---------- 纹理 ---------- */
  .grid-tex{
    position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
    background-size:24px 24px;
    mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
    -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
  }
  .cloud-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;opacity:1}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    height:68px;
    background:rgba(6,11,18,.78);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,.07);
    transition:height .22s var(--ease),background .22s var(--ease);
  }
  .site-header.scrolled{height:60px;background:rgba(6,11,18,.94)}
  .header-inner{height:100%;display:flex;align-items:center;gap:20px}
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .logo-mark{width:22px;height:22px;color:var(--brand);flex-shrink:0}
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-line1{font-size:14px;font-weight:700;letter-spacing:.01em;color:var(--t1)}
  .logo-line2{font-size:11px;font-weight:500;color:var(--t2);letter-spacing:.02em}
  .logo-badge{
    display:none;
    margin-left:2px;padding:2px 8px;border-radius:999px;
    font-size:11px;line-height:1.5;color:var(--brand);
    border:1px solid rgba(53,214,192,.4);background:rgba(53,214,192,.07);
  }
  @media(min-width:1200px){.logo-badge{display:inline-block}}
  .nav-links{display:none;flex:1;justify-content:center;gap:28px}
  .nav-link{
    position:relative;font-size:14px;color:var(--t2);
    padding:6px 0;transition:color .2s var(--ease);
  }
  .nav-link:hover{color:var(--t1)}
  .nav-link.active{color:var(--brand)}
  .nav-link.active::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    border-radius:2px;background:var(--brand);
  }
  .header-right{display:flex;align-items:center;gap:12px;margin-left:auto}
  .search-box{
    display:none;align-items:center;gap:8px;
    width:220px;height:38px;padding:0 12px;
    border-radius:999px;border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-box:focus-within{border-color:rgba(53,214,192,.6);box-shadow:0 0 0 3px rgba(53,214,192,.15)}
  .search-box i{font-size:12px;color:var(--t3)}
  .search-box input{
    flex:1;min-width:0;background:transparent;border:0;outline:0;
    color:var(--t1);font-size:13px;
  }
  .search-box input::placeholder{color:var(--t3)}
  .kbd{
    font-size:11px;color:var(--t3);border:1px solid var(--line);
    border-radius:6px;padding:1px 5px;line-height:1.4;
  }
  @media(min-width:768px){.search-box{display:flex}}
  @media(min-width:1024px){.nav-links{display:flex}}

  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:999px;border:0;cursor:pointer;
    font-size:15px;font-weight:600;color:#04201C;
    background:linear-gradient(135deg,#35D6C0,#1FA694);
    box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
    animation:breathe 2.4s ease-in-out infinite;
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,214,192,.6),0 14px 40px -6px rgba(53,214,192,.7)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.96)}
  .btn-primary-sm{
    display:none;align-items:center;justify-content:center;height:38px;padding:0 16px;
    border-radius:999px;border:0;cursor:pointer;font-size:13px;font-weight:600;color:#04201C;
    background:linear-gradient(135deg,#35D6C0,#1FA694);
    box-shadow:0 0 0 1px rgba(53,214,192,.45),0 8px 24px -10px rgba(53,214,192,.55);
    transition:transform .2s var(--ease),filter .2s var(--ease);
  }
  .btn-primary-sm:hover{filter:brightness(1.08);transform:translateY(-1px)}
  .btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:999px;cursor:pointer;
    font-size:15px;font-weight:500;color:var(--t1);
    background:transparent;border:1px solid rgba(255,255,255,.16);
    transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
  }
  .btn-ghost:hover{border-color:rgba(53,214,192,.65);background:rgba(53,214,192,.06);color:#fff}
  .btn-ghost-sm{
    display:none;align-items:center;justify-content:center;height:38px;padding:0 16px;
    border-radius:999px;font-size:13px;color:var(--t2);
    border:1px solid rgba(255,255,255,.16);
    transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
  }
  .btn-ghost-sm:hover{border-color:rgba(53,214,192,.6);color:var(--t1);background:rgba(53,214,192,.06)}
  @media(min-width:640px){.btn-ghost-sm{display:inline-flex}.btn-primary-sm{display:inline-flex}}
  .icon-btn{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:12px;border:1px solid var(--line);
    background:rgba(255,255,255,.04);color:var(--t1);cursor:pointer;
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  .icon-btn:hover{border-color:rgba(53,214,192,.55);color:var(--brand)}
  @media(min-width:1024px){#menuBtn{display:none}}

  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    font-size:14px;color:var(--brand);
    text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
    transition:color .2s var(--ease);
  }
  .text-link:hover{color:#7CE7DA}
  .nav-toggle-icon{width:16px;height:2px;background:currentColor;border-radius:2px;position:relative}
  .nav-toggle-icon::before,.nav-toggle-icon::after{
    content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;border-radius:2px;
  }
  .nav-toggle-icon::before{top:-5px}
  .nav-toggle-icon::after{top:5px}

  /* ---------- 抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:80;
    background:rgba(3,7,11,.66);
    opacity:0;pointer-events:none;
    transition:opacity .24s var(--ease);
  }
  .drawer.open{opacity:1;pointer-events:auto}
  .drawer-panel{
    position:absolute;top:0;right:0;bottom:0;width:82%;max-width:340px;
    background:var(--bg-raise);border-left:1px solid var(--line);
    padding:20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
    transform:translateX(100%);transition:transform .26s var(--ease);
  }
  .drawer.open .drawer-panel{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;font-size:14px;font-weight:700;color:var(--t1)}
  .drawer-nav{display:flex;flex-direction:column;gap:2px}
  .drawer-nav a{
    padding:11px 12px;border-radius:12px;font-size:14px;color:var(--t2);
    transition:background .2s var(--ease),color .2s var(--ease);
  }
  .drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--t1)}
  .drawer-nav a.active{color:var(--brand);background:rgba(53,214,192,.08)}
  .drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}
  .drawer-search{display:flex;width:100%}

  /* ---------- 通用板块 ---------- */
  .section{padding:64px 0}
  @media(min-width:768px){.section{padding:88px 0}}
  .section-head{max-width:720px}
  .section-head h2{
    font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;letter-spacing:-.01em;
  }
  .section-head p{margin-top:12px;color:var(--t2);font-size:15px;line-height:1.8}
  .section-gap{height:32px}
  @media(min-width:768px){.section-gap{height:40px}}

  .glass{
    position:relative;
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--r-md);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    overflow:hidden;
  }
  .glass::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;pointer-events:none;
    background:linear-gradient(90deg,rgba(255,255,255,.16),rgba(255,255,255,0));
  }
  .lift{transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
  .lift:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:0 24px 60px -22px rgba(53,214,192,.28)}

  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;line-height:1;letter-spacing:.02em;
    color:#7CE7DA;background:rgba(53,214,192,.08);
    border:1px solid rgba(53,214,192,.35);
  }
  .badge-blue{color:#9CB6FF;background:rgba(76,125,255,.1);border-color:rgba(76,125,255,.35)}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;
    padding:56px 0 64px;
    background:
      radial-gradient(900px 460px at 76% -8%, rgba(53,214,192,.10), transparent 68%),
      radial-gradient(700px 380px at 8% 110%, rgba(76,125,255,.07), transparent 70%);
  }
  @media(min-width:1024px){
    .hero{padding:76px 0 92px;min-height:640px;display:flex;align-items:center}
  }
  .hero-inner{position:relative;z-index:2;width:100%}
  h1{
    font-size:clamp(30px,4.4vw,52px);
    line-height:1.15;font-weight:700;letter-spacing:-.02em;
    margin-top:18px;
  }
  h1 .hl{color:var(--brand)}
  .hero-sub{margin-top:16px;font-size:16px;color:var(--t2);max-width:520px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  @media(max-width:639px){.hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}}
  .hero-trust{
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;
    margin-top:26px;font-size:14px;color:var(--t3);
  }
  .hero-trust li{position:relative;padding-left:14px}
  .hero-trust li::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
    width:4px;height:4px;border-radius:50%;background:rgba(53,214,192,.7);
  }
  .hero-visual{position:relative;height:262px;border-radius:var(--r-lg)}
  @media(min-width:768px){.hero-visual{height:340px}}
  @media(min-width:1024px){.hero-visual{height:408px}}
  .hero-visual img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .hero-visual-mask{
    position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(6,11,18,.30) 0%,rgba(6,11,18,.72) 55%,rgba(6,11,18,.90) 100%);
  }
  .hero-visual-body{position:absolute;left:0;right:0;bottom:0;padding:22px;z-index:2}
  .hero-visual-body p{margin-top:10px;font-size:14px;color:var(--t2)}
  .hero-visual-body p:first-of-type{color:var(--t1);font-weight:600}
  .float-card{
    position:absolute;top:16px;right:16px;z-index:3;
    padding:12px 14px;border-radius:14px;
    background:rgba(12,21,32,.72);
    border:1px solid rgba(255,255,255,.14);
    box-shadow:0 16px 36px -18px rgba(0,0,0,.9);
    backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  }
  .float-step{font-size:12px;color:var(--amber);letter-spacing:.04em}
  .dots{display:flex;gap:5px;margin-top:8px}
  .dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.22)}
  .dot.on{background:var(--brand);box-shadow:0 0 8px rgba(53,214,192,.7)}

  /* ---------- 三步 ---------- */
  .steps{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px}
  @media(min-width:1024px){.steps{grid-template-columns:repeat(3,1fr);gap:24px}}
  .step-card{position:relative;padding:24px;border-radius:var(--r-md)}
  .step-card:not(:last-child)::after{
    content:"";position:absolute;top:40px;right:-24px;width:24px;
    border-top:1px dashed rgba(53,214,192,.35);
  }
  @media(max-width:1023px){.step-card:not(:last-child)::after{display:none}}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    width:30px;height:30px;border-radius:999px;
    font-size:13px;font-weight:700;color:var(--amber);
    border:1px solid rgba(255,176,103,.45);background:rgba(255,176,103,.08);
    font-variant-numeric:tabular-nums;
  }
  .step-card h3{margin-top:14px;font-size:20px;font-weight:600;line-height:1.4}
  .step-card p{margin-top:8px;font-size:14px;color:var(--t2);line-height:1.75}
  .step-card .text-link{margin-top:14px}
  .step-card.is-key{border-color:rgba(53,214,192,.42);box-shadow:0 0 0 1px rgba(53,214,192,.16),0 22px 50px -26px rgba(53,214,192,.45)}
  .step-card.is-key .step-num{color:#04201C;background:linear-gradient(135deg,#FFB067,#E9903F);border-color:transparent}

  /* ---------- 指标 / 案例 ---------- */
  .metrics{
    display:grid;grid-template-columns:1fr;gap:16px;margin-top:28px;
  }
  @media(min-width:768px){.metrics{grid-template-columns:repeat(3,1fr);gap:20px}}
  .metric{padding:20px 22px;border-radius:var(--r-md)}
  .metric-num{
    font-size:clamp(30px,3.4vw,42px);font-weight:700;line-height:1.1;
    color:var(--amber);font-variant-numeric:tabular-nums;
  }
  .metric-num small{font-size:14px;font-weight:500;color:var(--t3);margin-left:6px}
  .metric p{margin-top:6px;font-size:14px;color:var(--t2)}
  .case-big{display:flex;flex-direction:column}
  .case-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A131C}
  .case-cover img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease)}
  .case-big:hover .case-cover img{transform:scale(1.03)}
  .case-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .case-body h3{font-size:20px;font-weight:600;line-height:1.4}
  .case-body .desc{font-size:15px;color:var(--t2);line-height:1.8}
  .src{font-size:13px;color:var(--t3);letter-spacing:.02em;margin-top:auto}
  .narrow-card{
    position:relative;padding:20px 22px 20px 26px;border-radius:var(--r-md);
  }
  .narrow-card::after{
    content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
    background:linear-gradient(180deg,#35D6C0,rgba(53,214,192,.15));
  }
  .narrow-card h3{font-size:17px;font-weight:600;line-height:1.45}
  .narrow-card p{margin-top:8px;font-size:14px;color:var(--t2);line-height:1.75}

  /* ---------- 最新信息 ---------- */
  .news-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-top:32px}
  @media(min-width:768px){
    .news-grid{grid-template-columns:repeat(2,1fr);gap:22px}
    .news-grid .news-card:first-child{grid-column:span 2}
  }
  .news-card{display:flex;flex-direction:column;padding:22px;border-radius:var(--r-md);gap:10px}
  .news-cover{
    position:relative;overflow:hidden;border-radius:12px;aspect-ratio:16/9;
    background:#0A131C;margin-bottom:4px;
  }
  .news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease)}
  .news-card:hover .news-cover img{transform:scale(1.03)}
  .news-card h3{
    font-size:17px;font-weight:600;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-card .excerpt{
    font-size:14px;color:var(--t2);line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-foot{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    margin-top:auto;padding-top:10px;font-size:13px;color:var(--t3);
    border-top:1px solid rgba(255,255,255,.06);
  }
  .news-foot .tnum{font-variant-numeric:tabular-nums;letter-spacing:.02em}
  .news-arrow{color:var(--brand);transition:transform .2s var(--ease)}
  .news-card:hover .news-arrow{transform:translateX(3px)}
  .empty-card{
    grid-column:1/-1;
    display:flex;flex-direction:column;align-items:center;gap:12px;
    padding:40px 24px;border-radius:var(--r-md);text-align:center;
  }
  .empty-card p{font-size:14px;color:var(--t2)}

  /* ---------- FAQ ---------- */
  .faq-item{
    border:1px solid var(--line);border-radius:var(--r-md);
    background:rgba(255,255,255,.035);overflow:hidden;
    transition:border-color .2s var(--ease);
  }
  .faq-item + .faq-item{margin-top:12px}
  .faq-item.open{border-color:rgba(53,214,192,.32)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;background:none;border:0;cursor:pointer;
    color:var(--t1);font-size:16px;font-weight:600;line-height:1.5;text-align:left;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--brand)}
  .faq-arrow{flex-shrink:0;color:var(--brand);transition:transform .26s var(--ease)}
  .faq-item.open .faq-arrow{transform:rotate(180deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
  .faq-item.open .faq-a{max-height:360px}
  .faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--t2)}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;overflow:hidden;border-radius:var(--r-lg);
    border:1px solid rgba(255,255,255,.1);
    padding:44px 24px;
  }
  @media(min-width:768px){.cta-band{padding:56px 48px}}
  .cta-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;filter:blur(8px);transform:scale(1.06)}
  .cta-mask{position:absolute;inset:0;background:linear-gradient(120deg,rgba(6,11,18,.94),rgba(6,11,18,.78))}
  .cta-inner{position:relative;z-index:2}
  .cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3}
  .cta-inner p{margin-top:12px;color:var(--t2);font-size:15px;max-width:560px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  @media(max-width:639px){.cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%}}
  .cta-meta{margin-top:22px;font-size:12px;color:var(--t3);letter-spacing:.02em}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--bg-raise);border-top:1px solid rgba(255,255,255,.08);padding:48px 0 28px;margin-top:0}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}}
  @media(max-width:767px){.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
  .footer-brand p{margin-top:14px;font-size:14px;color:var(--t2);max-width:280px;line-height:1.7}
  .footer-domain{margin-top:10px;font-size:13px;color:var(--t3);letter-spacing:.02em}
  .footer-domain a{color:var(--t3)}
  .footer-domain a:hover{color:var(--brand)}
  .footer-col h4{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:14px}
  .footer-col li + li{margin-top:10px}
  .footer-col a,.footer-col span{font-size:14px;color:var(--t2);transition:color .2s var(--ease)}
  .footer-col a:hover{color:var(--brand)}
  .footer-bottom{
    margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.07);
    display:flex;flex-direction:column;gap:8px;
    font-size:13px;color:var(--t3);text-align:center;
  }
  @media(min-width:768px){.footer-bottom{flex-direction:row;justify-content:space-between;text-align:left}}

  @keyframes breathe{
    0%,100%{box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55)}
    50%{box-shadow:0 0 0 1px rgba(53,214,192,.62),0 12px 38px -6px rgba(53,214,192,.72)}
  }
  @media(prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
  }

/* roulang page: article */
:root{
  --bg-base:#060B12;
  --bg-raise:#0C1520;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#35D6C0;
  --brand-deep:#1FA694;
  --blue:#4C7DFF;
  --amber:#FFB067;
  --text:#E9F2F6;
  --text-2:#A3B6C2;
  --text-3:#6C808D;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --shadow-card-hover:0 24px 60px -22px rgba(53,214,192,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:68px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(53,214,192,.25);color:#fff;}

::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:#060B12;}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px;}
::-webkit-scrollbar-thumb:hover{background:rgba(53,214,192,.45);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media(min-width:768px){
  .container{padding:0 32px;}
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(6,11,18,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.site-header.scrolled{background:rgba(6,11,18,.94);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:var(--header-h);
  transition:height .22s var(--ease);
}
.site-header.scrolled .header-inner{height:60px;}

.logo{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--text);}
.logo-mark{width:24px;height:24px;color:var(--brand);flex:none;}
.logo-text{display:flex;flex-direction:column;line-height:1.12;font-size:15px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.logo-line2{font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:.08em;}
.logo-badge{
  flex:none;
  margin-left:2px;
  font-size:11px;
  line-height:1;
  padding:5px 9px;
  border-radius:999px;
  border:1px solid rgba(53,214,192,.45);
  background:rgba(53,214,192,.08);
  color:var(--brand);
  white-space:nowrap;
}

.nav-links{display:none;align-items:center;gap:26px;margin-left:6px;}
.nav-link{
  position:relative;
  font-size:14px;
  color:var(--text-2);
  padding:8px 0;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-link:hover{color:var(--text);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--brand);
}

.header-right{display:flex;align-items:center;gap:10px;margin-left:auto;}

.search-box{
  display:none;
  align-items:center;
  gap:8px;
  height:36px;
  padding:0 12px;
  min-width:200px;
  max-width:240px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-3);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box i{font-size:12px;}
.search-box input{
  flex:1;min-width:0;
  background:transparent;border:0;outline:none;
  color:var(--text);font-size:13px;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{
  border-color:rgba(53,214,192,.6);
  box-shadow:0 0 0 3px rgba(53,214,192,.15);
}
.kbd{
  flex:none;
  font-size:11px;
  line-height:1;
  padding:3px 5px;
  border-radius:6px;
  border:1px solid var(--line);
  color:var(--text-3);
}

.btn-primary-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:36px;padding:0 16px;
  border-radius:999px;
  font-size:13px;font-weight:600;
  color:#04201C;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary-sm:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(53,214,192,.55),0 14px 40px -6px rgba(53,214,192,.7);
}
.btn-primary-sm:active{transform:translateY(0);filter:brightness(.96);}

.btn-ghost-sm{
  display:none;align-items:center;justify-content:center;
  height:36px;padding:0 16px;
  border-radius:999px;
  font-size:13px;font-weight:500;
  color:var(--text-2);
  border:1px solid var(--line-strong);
  background:transparent;
  white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.btn-ghost-sm:hover{
  color:var(--brand);
  border-color:rgba(53,214,192,.6);
  background:rgba(53,214,192,.06);
}

.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--glass);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(53,214,192,.5);background:rgba(53,214,192,.07);}
.nav-toggle-icon{position:relative;display:block;width:16px;height:1.6px;background:var(--text);border-radius:2px;transition:background .2s var(--ease);}
.nav-toggle-icon::before,
.nav-toggle-icon::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--text);border-radius:2px;
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle-icon::before{top:-5px;}
.nav-toggle-icon::after{top:5px;}
.icon-btn[aria-expanded="true"] .nav-toggle-icon{background:transparent;}
.icon-btn[aria-expanded="true"] .nav-toggle-icon::before{transform:translateY(5px) rotate(45deg);}
.icon-btn[aria-expanded="true"] .nav-toggle-icon::after{transform:translateY(-5px) rotate(-45deg);}

@media(min-width:1024px){
  .nav-links{display:flex;}
  .search-box{display:flex;}
  .btn-ghost-sm{display:inline-flex;}
  .icon-btn{display:none;}
}
@media(min-width:1280px){
  .nav-links{gap:28px;}
}

/* 阅读进度 */
.read-progress{
  position:absolute;
  left:0;bottom:-1px;
  height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 12px rgba(53,214,192,.6);
  transition:width .1s linear;
}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(3,7,11,.7);
  -webkit-backdrop-filter:blur(4px);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer-panel{
  position:fixed;top:0;right:0;bottom:0;z-index:91;
  width:min(84vw,340px);
  padding:22px 20px 28px;
  background:var(--bg-raise);
  border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  overflow-y:auto;
}
.drawer-panel.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-title{font-size:13px;color:var(--text-3);letter-spacing:.08em;}
.drawer-close{
  width:34px;height:34px;border-radius:10px;
  border:1px solid var(--line);
  color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  padding:12px 2px;
  font-size:15px;
  color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a:hover{color:var(--brand);padding-left:6px;}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 12px;
  border-radius:999px;
  background:var(--glass);
  border:1px solid var(--line);
  color:var(--text-3);
}
.drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--text);font-size:14px;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:12px;}
.drawer-actions .btn-primary-sm,
.drawer-actions .btn-ghost-sm{display:flex;width:100%;height:44px;font-size:14px;}
@media(min-width:1024px){
  .drawer-mask,.drawer-panel{display:none;}
}

/* ============ 面包屑 ============ */
.breadcrumb-wrap{padding-top:22px;}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:nowrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  overflow:hidden;
  white-space:nowrap;
}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease);flex:none;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.2);flex:none;}
.breadcrumb .current{
  color:var(--text-2);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  min-width:0;
}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
  padding-top:22px;
  padding-bottom:64px;
}
@media(min-width:1024px){
  .article-layout{
    grid-template-columns:minmax(0,1fr) 320px;
    gap:48px;
    padding-top:28px;
    padding-bottom:80px;
    align-items:start;
  }
}
.article-main{min-width:0;}

.article-head{
  padding-bottom:22px;
  border-bottom:1px solid var(--line);
  margin-bottom:28px;
}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;
  padding:6px 12px;
  border-radius:999px;
  color:var(--brand);
  background:rgba(53,214,192,.08);
  border:1px solid rgba(53,214,192,.3);
}
.article-head h1{
  margin-top:16px;
  font-size:clamp(26px,4vw,40px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text);
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px;
  margin-top:16px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--text-3);
}
.meta-row .dot{color:rgba(255,255,255,.22);}
.meta-row .num{font-variant-numeric:tabular-nums;}

/* 正文排版 */
.article-body{
  max-width:740px;
  font-size:17px;
  line-height:1.9;
  color:var(--text-2);
  overflow-wrap:break-word;
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  margin:2em 0 .8em;
  padding-left:14px;
  border-left:3px solid var(--brand);
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.4;
  font-weight:700;
  color:var(--text);
  letter-spacing:-.01em;
  scroll-margin-top:96px;
}
.article-body h3{
  margin:1.6em 0 .6em;
  font-size:20px;
  line-height:1.4;
  font-weight:600;
  color:var(--text);
  scroll-margin-top:96px;
}
.article-body h4{
  margin:1.4em 0 .5em;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.article-body strong,.article-body b{color:var(--text);font-weight:600;}
.article-body a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:4px;
  text-decoration-thickness:1px;
  transition:color .2s var(--ease);
}
.article-body a:hover{color:var(--blue);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px;}
.article-body ul li{
  position:relative;
  padding-left:16px;
  margin-bottom:.55em;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--brand);
  opacity:.9;
}
.article-body ol{list-style:decimal;}
.article-body ol li{
  margin-bottom:.55em;
  padding-left:6px;
}
.article-body ol li::marker{color:var(--brand);font-weight:600;font-size:15px;font-variant-numeric:tabular-nums;}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:var(--glass);
  color:var(--text-2);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;
  height:auto;
  margin:1.6em auto;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption,
.article-body .figcaption{
  margin-top:.7em;
  text-align:center;
  font-size:13px;
  color:var(--text-3);
}
.article-body table{
  display:block;
  width:100%;
  max-width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
}
.article-body table th{
  background:rgba(255,255,255,.06);
  color:var(--text);
  font-weight:600;
  text-align:left;
  padding:12px 14px;
  white-space:nowrap;
  border-bottom:1px solid var(--line);
}
.article-body table td{
  padding:12px 14px;
  color:var(--text-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  vertical-align:top;
}
.article-body table tr:last-child td{border-bottom:0;}
.article-body table tbody tr{transition:background .2s var(--ease);}
.article-body table tbody tr:hover{background:rgba(255,255,255,.08);}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:2em 0;
}
.article-body code{
  padding:2px 6px;
  border-radius:6px;
  background:rgba(53,214,192,.1);
  color:var(--brand);
  font-size:14px;
}

/* 空态 */
.empty-state{
  max-width:420px;
  margin:8px 0 40px;
  padding:34px 26px;
  text-align:center;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
}
.empty-state i{font-size:24px;color:var(--text-3);}
.empty-state p{
  margin:14px 0 16px;
  font-size:15px;
  color:var(--text-2);
  line-height:1.7;
}
.link-more{
  display:inline-block;
  font-size:14px;
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:4px;
  transition:color .2s var(--ease);
}
.link-more:hover{color:#5FE9D6;}

/* 相关推荐 */
.related{
  margin-top:48px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.section-title-sm{
  font-size:20px;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.section-title-sm::before{
  content:"";
  width:3px;height:16px;
  border-radius:2px;
  background:var(--brand);
}
.related-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media(min-width:768px){
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;}
}
.rel-card{
  display:flex;flex-direction:column;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.rel-card:hover{
  transform:translateY(-2px);
  border-color:rgba(53,214,192,.3);
  box-shadow:var(--shadow-card-hover);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-raise);
}
.rel-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s var(--ease);
}
.rel-card:hover .rel-thumb img{transform:scale(1.03);}
.rel-body{padding:14px 16px 16px;}
.rel-cat{font-size:12px;color:var(--brand);}
.rel-title{
  margin-top:6px;
  font-size:15px;
  line-height:1.5;
  font-weight:600;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-time{
  margin-top:10px;
  font-size:12px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* 上一篇下一篇 */
.post-nav{
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
  margin-top:28px;
}
@media(min-width:768px){
  .post-nav{grid-template-columns:1fr 1fr;}
}
.post-nav-item{
  display:flex;flex-direction:column;gap:6px;
  padding:16px 18px;
  border-radius:var(--r-sm);
  background:var(--glass);
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.post-nav-item:hover{
  border-color:rgba(53,214,192,.35);
  background:rgba(53,214,192,.05);
  transform:translateY(-2px);
}
.post-nav-label{font-size:12px;color:var(--text-3);}
.post-nav-title{
  font-size:14px;
  line-height:1.6;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-nav-item.next{text-align:right;}

/* 文末动作 */
.article-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:28px;
}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 24px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  color:#04201C;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(53,214,192,.55),0 14px 40px -6px rgba(53,214,192,.7);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.96);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:46px;padding:0 22px;
  border-radius:999px;
  font-size:15px;font-weight:500;
  color:var(--text-2);
  border:1px solid var(--line-strong);
  background:transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{
  color:var(--brand);
  border-color:rgba(53,214,192,.6);
  background:rgba(53,214,192,.06);
  transform:translateY(-1px);
}

/* 侧栏 */
.article-side{
  display:flex;flex-direction:column;gap:18px;
  min-width:0;
}
@media(min-width:1024px){
  .article-side{position:sticky;top:96px;}
}
.side-card{
  padding:18px 18px 16px;
  border-radius:var(--r-md);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
}
.side-card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.14),transparent);
}
.side-title{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:12px;
  display:flex;align-items:center;gap:8px;
}
.side-title::before{
  content:"";
  width:3px;height:13px;border-radius:2px;
  background:var(--brand);
}
.toc li + li{margin-top:2px;}
.toc a{
  display:block;
  padding:8px 10px;
  font-size:14px;
  color:var(--text-2);
  border-radius:8px;
  border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{
  color:var(--brand);
  background:rgba(53,214,192,.07);
  border-left-color:var(--brand);
}
.side-links li + li{margin-top:2px;}
.side-links a{
  display:flex;align-items:center;gap:8px;
  padding:8px 10px;
  font-size:14px;
  color:var(--text-2);
  border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.side-links a::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:rgba(53,214,192,.5);
  flex:none;
  transition:background .2s var(--ease);
}
.side-links a:hover{color:var(--brand);background:rgba(76,125,255,.08);}
.side-links a:hover::before{background:var(--brand);}
.btn-ghost-full{
  display:flex;align-items:center;justify-content:center;
  height:44px;
  border-radius:999px;
  font-size:14px;font-weight:500;
  color:var(--text-2);
  border:1px solid var(--line-strong);
  background:transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.btn-ghost-full:hover{
  color:var(--brand);
  border-color:rgba(53,214,192,.6);
  background:rgba(53,214,192,.06);
}
.side-note{
  font-size:12px;
  line-height:1.7;
  color:var(--text-3);
  padding:0 4px;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-raise);
  border-top:1px solid var(--line);
  padding:48px 0 28px;
  margin-top:24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media(min-width:640px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px;}
}
@media(min-width:1024px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-3);
  max-width:280px;
}
.footer-domain{
  margin-top:12px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.footer-domain a{
  color:var(--text-3);
  border-bottom:1px dashed rgba(255,255,255,.18);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-domain a:hover{color:var(--brand);border-color:rgba(53,214,192,.5);}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin-bottom:14px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,
.footer-col span{
  font-size:14px;
  color:var(--text-3);
  line-height:1.6;
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;
  flex-direction:column;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  line-height:1.6;
}
@media(min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;gap:16px;}
}

a:focus-visible,
button:focus-visible,
input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:6px;
}

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

/* roulang page: category1 */
:root{
    --bg-base:#060B12;
    --bg-raise:#0C1520;
    --glass:rgba(255,255,255,0.045);
    --line:rgba(255,255,255,0.09);
    --brand:#35D6C0;
    --brand-deep:#1FA694;
    --blue:#4C7DFF;
    --amber:#FFB067;
    --text:#E9F2F6;
    --text-2:#A3B6C2;
    --text-3:#6C808D;
    --r-lg:20px;
    --r-md:16px;
    --r-sm:12px;
    --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
    --shadow-hover:0 24px 60px -22px rgba(53,214,192,.28);
    --ease:cubic-bezier(.2,.7,.3,1);
    --header-h:68px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;line-height:1.8;
    color:var(--text);
    background:var(--bg-base);
    -webkit-font-smoothing:antialiased;
    font-variant-numeric:tabular-nums;
  }
  body::before{
    content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
    background:radial-gradient(900px 520px at 78% -8%, rgba(53,214,192,.10), transparent 68%),
               radial-gradient(700px 420px at 6% 4%, rgba(76,125,255,.07), transparent 70%);
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
  a:hover{color:var(--brand)}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0}
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em}
  button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
  input{font-family:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
  @media (min-width:768px){.wrap{padding:0 32px}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(6,11,18,.78);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:height .2s var(--ease),background-color .2s var(--ease);
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    height:var(--header-h);
  }
  .logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .logo-mark{width:22px;height:22px;color:var(--brand);flex-shrink:0}
  .logo-text{display:flex;flex-direction:column;line-height:1.15}
  .logo-line1{font-size:14.5px;font-weight:700;color:var(--text);letter-spacing:.02em}
  .logo-line2{font-size:11.5px;color:var(--text-3);letter-spacing:.06em}
  .logo-badge{
    font-size:11.5px;padding:2px 8px;border-radius:999px;
    border:1px solid rgba(53,214,192,.42);color:var(--brand);
    letter-spacing:.04em;white-space:nowrap;
  }
  .nav-links{display:flex;align-items:center;gap:26px}
  .nav-link{
    position:relative;font-size:14px;color:var(--text-2);padding:6px 0;white-space:nowrap;
  }
  .nav-link:hover{color:var(--text)}
  .nav-link.active{color:var(--brand)}
  .nav-link.active::after{
    content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
    background:var(--brand);border-radius:2px;
  }
  .header-right{display:flex;align-items:center;gap:12px}
  .search-box{
    display:flex;align-items:center;gap:8px;
    height:38px;width:228px;padding:0 12px;
    border-radius:999px;border:1px solid var(--line);
    background:var(--glass);color:var(--text-3);
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .search-box:focus-within{border-color:rgba(53,214,192,.6);box-shadow:0 0 0 3px rgba(53,214,192,.15)}
  .search-box i{font-size:12.5px}
  .search-box input{
    flex:1;min-width:0;background:transparent;border:0;outline:none;
    color:var(--text);font-size:13.5px;
  }
  .search-box input::placeholder{color:var(--text-3)}
  .kbd{
    font-size:11px;padding:1px 5px;border-radius:5px;
    border:1px solid var(--line);color:var(--text-3);white-space:nowrap;
  }
  .btn-ghost-sm,.btn-primary-sm,.btn-ghost,.btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;font-weight:600;white-space:nowrap;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease),color .2s var(--ease);
  }
  .btn-ghost-sm{
    height:38px;padding:0 16px;font-size:13.5px;color:var(--text-2);
    border:1px solid rgba(255,255,255,.16);background:transparent;
  }
  .btn-ghost-sm:hover{color:var(--brand);border-color:rgba(53,214,192,.55);background:rgba(53,214,192,.08)}
  .btn-primary-sm{
    height:38px;padding:0 18px;font-size:13.5px;color:#04201C;
    background:linear-gradient(135deg,#35D6C0,#1FA694);
    box-shadow:0 0 0 1px rgba(53,214,192,.45),0 8px 24px -8px rgba(53,214,192,.55);
  }
  .btn-primary-sm:hover{filter:brightness(1.08);color:#04201C;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,214,192,.6),0 12px 32px -6px rgba(53,214,192,.7)}
  .btn-primary-sm:active{transform:translateY(0);filter:brightness(.97)}
  .btn-primary{
    height:48px;padding:0 24px;font-size:15px;color:#04201C;
    background:linear-gradient(135deg,#35D6C0,#1FA694);
    box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
    animation:breathe 2.4s ease-in-out infinite;
  }
  .btn-primary:hover{filter:brightness(1.08);color:#04201C;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,214,192,.62),0 14px 40px -6px rgba(53,214,192,.7)}
  .btn-primary:active{transform:translateY(0);filter:brightness(.96)}
  @keyframes breathe{
    0%,100%{box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.45)}
    50%{box-shadow:0 0 0 1px rgba(53,214,192,.62),0 12px 36px -6px rgba(53,214,192,.68)}
  }
  .btn-ghost{
    height:48px;padding:0 24px;font-size:15px;color:var(--text);
    border:1px solid rgba(255,255,255,.16);background:transparent;
  }
  .btn-ghost:hover{color:var(--brand);border-color:rgba(53,214,192,.55);background:rgba(53,214,192,.07)}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
    text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
    text-decoration-color:rgba(53,214,192,.4);
  }
  .link-arrow:hover{color:#5BE7D4;text-decoration-color:rgba(91,231,212,.8)}
  .link-arrow i{font-size:11px;transition:transform .2s var(--ease)}
  .link-arrow:hover i{transform:translateX(3px)}
  .icon-btn{
    display:none;width:38px;height:38px;border-radius:12px;
    border:1px solid var(--line);background:var(--glass);
    align-items:center;justify-content:center;
  }
  .nav-toggle-icon{position:relative;display:block;width:16px;height:2px;background:var(--text);border-radius:2px}
  .nav-toggle-icon::before,.nav-toggle-icon::after{
    content:"";position:absolute;left:0;width:16px;height:2px;background:var(--text);border-radius:2px;
  }
  .nav-toggle-icon::before{top:-5px}
  .nav-toggle-icon::after{top:5px}

  /* ---------- drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(3,7,12,.66);backdrop-filter:blur(3px);
    opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:70;
  }
  .drawer-mask.open{opacity:1;visibility:visible}
  .mobile-drawer{
    position:fixed;top:0;right:0;height:100%;width:min(330px,88vw);z-index:80;
    background:var(--bg-raise);border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .26s var(--ease);
    display:flex;flex-direction:column;padding:18px 18px 22px;overflow-y:auto;
  }
  .mobile-drawer.open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
  .drawer-title{font-size:14px;font-weight:600;color:var(--text-2);letter-spacing:.04em}
  .drawer-close{
    width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;color:var(--text-2);font-size:15px;
  }
  .drawer-close:hover{color:var(--brand);border-color:rgba(53,214,192,.5)}
  .drawer-nav{display:flex;flex-direction:column;gap:4px}
  .drawer-link{
    padding:11px 12px;border-radius:12px;font-size:15px;color:var(--text-2);
    border:1px solid transparent;
  }
  .drawer-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
  .drawer-link.active{color:var(--brand);background:rgba(53,214,192,.09);border-color:rgba(53,214,192,.28)}
  .drawer-search{margin:16px 0;display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--glass);color:var(--text-3)}
  .drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--text);font-size:14px}
  .drawer-search input::placeholder{color:var(--text-3)}
  .drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px;padding-top:16px}
  .drawer-actions .btn-primary,.drawer-actions .btn-ghost{width:100%;height:46px;font-size:15px}

  /* ---------- shared section pieces ---------- */
  .section{padding:64px 0;position:relative}
  @media (min-width:768px){.section{padding:88px 0}}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);letter-spacing:.02em;flex-wrap:wrap}
  .crumb a{color:var(--text-3)}
  .crumb a:hover{color:var(--brand)}
  .crumb .sep{color:rgba(255,255,255,.2)}
  .crumb .cur{color:var(--text-2);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:5px 12px;border-radius:999px;font-size:12.5px;letter-spacing:.04em;
    background:rgba(53,214,192,.09);border:1px solid rgba(53,214,192,.3);color:var(--brand);
  }
  .sec-head{max-width:760px;margin-bottom:32px}
  .sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700}
  .sec-head p{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--text-2)}
  .card{
    position:relative;background:var(--glass);border:1px solid var(--line);
    border-radius:var(--r-md);box-shadow:var(--shadow-card);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
    overflow:hidden;
  }
  .card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,rgba(255,255,255,.14),rgba(255,255,255,0) 62%);
  }
  .card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover)}
  .tag{
    display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
    font-size:12px;letter-spacing:.02em;
    background:rgba(53,214,192,.1);border:1px solid rgba(53,214,192,.28);color:var(--brand);
  }
  .tag-blue{background:rgba(76,125,255,.1);border-color:rgba(76,125,255,.3);color:#8FAEFF}

  /* ---------- hero ---------- */
  .page-hero{position:relative;padding:36px 0 56px;overflow:hidden}
  @media (min-width:768px){.page-hero{padding:48px 0 76px}}
  .hero-grid-deco{
    position:absolute;inset:0;z-index:0;pointer-events:none;
    background-image:linear-gradient(to right,rgba(255,255,255,.03) 1px,transparent 1px),
                     linear-gradient(to bottom,rgba(255,255,255,.03) 1px,transparent 1px);
    background-size:24px 24px;
    -webkit-mask-image:radial-gradient(ellipse at 26% 22%,#000 8%,transparent 72%);
    mask-image:radial-gradient(ellipse at 26% 22%,#000 8%,transparent 72%);
  }
  .cloud-deco{position:absolute;top:-10px;right:-40px;width:620px;height:320px;opacity:.075;pointer-events:none;z-index:0;color:var(--brand)}
  .hero-split{
    display:grid;grid-template-columns:1fr;gap:34px;align-items:start;margin-top:24px;
  }
  @media (min-width:1024px){
    .hero-split{grid-template-columns:5fr 7fr;gap:48px;align-items:center;margin-top:28px}
  }
  .hero-copy h1{
    font-size:clamp(30px,4.4vw,48px);line-height:1.16;font-weight:700;letter-spacing:-0.02em;
    margin-top:18px;
  }
  .hero-copy h1 .hl{
    color:var(--brand);
    background:linear-gradient(180deg,transparent 74%,rgba(53,214,192,.16) 74%);
    padding:0 2px;
  }
  .hero-lead{margin-top:16px;font-size:17px;line-height:1.75;color:var(--text)}
  .hero-desc{margin-top:12px;font-size:15.5px;line-height:1.85;color:var(--text-2)}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .hero-trust{
    display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;
    font-size:14px;color:var(--text-3);
  }
  .hero-trust span{display:inline-flex;align-items:center;gap:7px}
  .hero-trust .dot{width:5px;height:5px;border-radius:999px;background:var(--brand);opacity:.75}
  .hero-trust .bar{width:1px;height:12px;background:rgba(255,255,255,.16)}
  .hero-visual{position:relative}
  .visual-card{
    position:relative;border-radius:var(--r-lg);overflow:hidden;
    border:1px solid var(--line);box-shadow:0 26px 60px -30px rgba(0,0,0,.9);
    min-height:300px;
  }
  @media (min-width:1024px){.visual-card{min-height:420px}}
  .visual-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
  .visual-card .mask{
    position:absolute;inset:0;
    background:linear-gradient(155deg,rgba(6,11,18,.72) 0%,rgba(6,11,18,.86) 62%,rgba(6,11,18,.94) 100%);
  }
  .visual-body{position:relative;z-index:2;padding:24px;display:flex;flex-direction:column;height:100%;gap:14px}
  .visual-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);display:flex;align-items:center;gap:8px}
  .visual-title::before{content:"";width:18px;height:1px;background:var(--brand)}
  .status-row{
    display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.05);border:1px solid var(--line);
  }
  .status-row .ico{
    width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
    background:rgba(53,214,192,.12);border:1px solid rgba(53,214,192,.26);color:var(--brand);flex-shrink:0;font-size:14px;
  }
  .status-row .txt strong{display:block;font-size:14.5px;font-weight:600;color:var(--text)}
  .status-row .txt span{display:block;font-size:13px;color:var(--text-3);line-height:1.6}
  .float-step{
    position:absolute;right:18px;bottom:18px;z-index:3;
    padding:12px 16px;border-radius:var(--r-sm);
    background:rgba(12,21,32,.88);border:1px solid rgba(53,214,192,.32);
    backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
    box-shadow:0 16px 36px -18px rgba(0,0,0,.9);
    display:flex;align-items:center;gap:12px;
  }
  .float-step .num{
    font-size:12px;color:var(--amber);letter-spacing:.06em;font-weight:600;
  }
  .float-step .lbl{font-size:13px;color:var(--text-2)}
  .step-dots{display:flex;gap:5px}
  .step-dots i{width:6px;height:6px;border-radius:999px;background:rgba(255,255,255,.18)}
  .step-dots i.on{background:var(--brand);box-shadow:0 0 8px rgba(53,214,192,.7)}

  /* ---------- timeline ---------- */
  .timeline{position:relative;margin-top:8px;max-width:860px}
  .timeline::before{
    content:"";position:absolute;left:17px;top:10px;bottom:18px;width:2px;
    background:linear-gradient(180deg,rgba(53,214,192,.6),rgba(53,214,192,.06));
    border-radius:2px;
  }
  .tl-item{position:relative;padding:0 0 30px 58px}
  .tl-item:last-child{padding-bottom:0}
  .tl-dot{
    position:absolute;left:4px;top:2px;width:28px;height:28px;border-radius:999px;
    display:flex;align-items:center;justify-content:center;
    font-size:12.5px;font-weight:700;color:#04201C;
    background:linear-gradient(135deg,#35D6C0,#1FA694);
    box-shadow:0 0 0 4px rgba(53,214,192,.1);
  }
  .tl-item h3{font-size:18px;line-height:1.4;font-weight:600}
  .tl-item p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:720px}
  .tl-meta{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}

  /* ---------- asymmetric combo ---------- */
  .combo-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:1024px){
    .combo-grid{grid-template-columns:7fr 5fr;gap:24px;align-items:start}
  }
  .wide-card{
    display:grid;grid-template-columns:1fr;gap:0;
    background:var(--glass);border:1px solid var(--line);border-radius:var(--r-md);
    overflow:hidden;position:relative;box-shadow:var(--shadow-card);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .wide-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover)}
  @media (min-width:640px){.wide-card{grid-template-columns:220px 1fr}}
  .wide-card .thumb{position:relative;overflow:hidden;background:var(--bg-raise);aspect-ratio:16/9}
  @media (min-width:640px){.wide-card .thumb{aspect-ratio:auto;height:100%;min-height:180px}}
  .wide-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .wide-card:hover .thumb img{transform:scale(1.03)}
  .wide-card .body{padding:20px 22px;display:flex;flex-direction:column;gap:10px}
  .wide-card h3{font-size:18px;line-height:1.4;font-weight:600}
  .wide-card p{font-size:14.5px;line-height:1.8;color:var(--text-2)}
  .wide-stack{display:grid;gap:20px}
  .narrow-card{
    padding:22px;border-radius:var(--r-md);
    background:var(--glass);border:1px solid var(--line);border-left:3px solid var(--brand);
    box-shadow:var(--shadow-card);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .narrow-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);border-left-color:var(--brand);box-shadow:var(--shadow-hover)}
  .narrow-card h3{font-size:17px;line-height:1.4;font-weight:600}
  .narrow-card ul{margin-top:14px;display:grid;gap:12px}
  .narrow-card li{
    position:relative;padding-left:18px;font-size:14.5px;line-height:1.75;color:var(--text-2);
  }
  .narrow-card li::before{
    content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;
    background:var(--brand);opacity:.85;
  }
  .mini-note{
    margin-top:16px;padding:14px 16px;border-radius:var(--r-sm);
    background:rgba(255,176,103,.08);border-left:3px solid var(--amber);
    font-size:14px;line-height:1.75;color:#F1D6BC;
  }

  /* ---------- check / stats ---------- */
  .stat-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:8px}
  @media (min-width:640px){.stat-grid{grid-template-columns:repeat(3,1fr)}}
  .stat-card{
    padding:22px;border-radius:var(--r-md);
    background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .stat-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover)}
  .stat-num{
    font-size:36px;line-height:1.1;font-weight:700;color:var(--amber);letter-spacing:-0.02em;
  }
  .stat-num small{font-size:14px;font-weight:500;color:var(--text-3);margin-left:6px;letter-spacing:0}
  .stat-card h3{margin-top:10px;font-size:15.5px;font-weight:600}
  .stat-card p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-3)}
  .check-list{margin-top:28px;display:grid;gap:12px}
  @media (min-width:768px){.check-list{grid-template-columns:repeat(2,1fr);gap:14px}}
  .check-item{
    display:flex;gap:12px;padding:16px 18px;border-radius:var(--r-sm);
    background:rgba(255,255,255,.03);border:1px solid var(--line);
  }
  .check-item i{color:var(--brand);font-size:14px;margin-top:5px}
  .check-item strong{display:block;font-size:14.5px;font-weight:600;color:var(--text)}
  .check-item span{display:block;margin-top:4px;font-size:13.5px;line-height:1.7;color:var(--text-3)}

  /* ---------- faq ---------- */
  .faq-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:8px}
  @media (min-width:768px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:18px}}
  .faq-item{
    padding:22px;border-radius:var(--r-md);
    background:var(--glass);border:1px solid var(--line);
    transition:border-color .22s var(--ease),background-color .22s var(--ease);
  }
  .faq-item:hover{border-color:rgba(53,214,192,.28);background:rgba(255,255,255,.06)}
  .faq-item h3{font-size:16px;line-height:1.5;font-weight:600;display:flex;gap:10px}
  .faq-item h3 i{color:var(--brand);font-size:14px;margin-top:4px}
  .faq-item p{margin-top:10px;font-size:14.5px;line-height:1.85;color:var(--text-2)}

  /* ---------- cta band ---------- */
  .cta-band{position:relative;overflow:hidden;border-radius:var(--r-lg);border:1px solid var(--line)}
  .cta-band .bg{position:absolute;inset:0;z-index:0}
  .cta-band .bg img{width:100%;height:100%;object-fit:cover;filter:blur(8px);transform:scale(1.06)}
  .cta-band .bg::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(125deg,rgba(6,11,18,.94),rgba(12,21,32,.88) 58%,rgba(6,11,18,.96));
  }
  .cta-band .cta-inner{
    position:relative;z-index:2;padding:36px 24px;
    display:flex;flex-direction:column;gap:20px;
  }
  @media (min-width:900px){
    .cta-band .cta-inner{padding:44px 40px;flex-direction:row;align-items:center;justify-content:space-between;gap:32px}
  }
  .cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
  .cta-inner p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:520px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
  .cta-foot{
    margin-top:14px;font-size:12.5px;letter-spacing:.04em;color:var(--text-3);
    display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  }

  /* ---------- channel cards ---------- */
  .channel-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:8px}
  @media (min-width:640px){.channel-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.channel-grid{grid-template-columns:repeat(4,1fr)}}
  .channel-card{
    display:flex;flex-direction:column;gap:8px;padding:20px;border-radius:var(--r-md);
    background:var(--glass);border:1px solid var(--line);position:relative;
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .channel-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover)}
  .channel-card .c-ico{color:var(--brand);font-size:15px}
  .channel-card h3{font-size:15.5px;line-height:1.45;font-weight:600}
  .channel-card p{font-size:13.5px;line-height:1.7;color:var(--text-3)}
  .channel-card .arrow{margin-top:auto;font-size:12.5px;color:var(--brand);padding-top:8px}
  .channel-card.disabled{
    opacity:.48;pointer-events:none;background:rgba(255,255,255,.02);
    border-color:rgba(255,255,255,.06);
  }
  .channel-card.disabled .c-ico,.channel-card.disabled .arrow{color:var(--text-3)}
  .channel-card.disabled::after{
    content:"当前页面";position:absolute;top:12px;right:12px;
    font-size:11.5px;padding:2px 8px;border-radius:999px;
    border:1px solid rgba(255,255,255,.12);color:var(--text-3);
  }

  /* ---------- footer ---------- */
  .site-footer{
    margin-top:40px;background:var(--bg-raise);
    border-top:1px solid var(--line);position:relative;z-index:1;
  }
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:32px;padding:48px 0 32px;
  }
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
  .footer-brand p{margin-top:14px;font-size:14px;line-height:1.75;color:var(--text-3);max-width:280px}
  .footer-domain{margin-top:14px;font-size:13px;color:var(--text-3);letter-spacing:.04em}
  .footer-domain a{color:var(--text-3)}
  .footer-domain a:hover{color:var(--brand)}
  .footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.04em}
  .footer-col ul{display:grid;gap:10px}
  .footer-col li{font-size:13.5px;line-height:1.6;color:var(--text-3)}
  .footer-col a{color:var(--text-3)}
  .footer-col a:hover{color:var(--brand)}
  .footer-bottom{
    border-top:1px solid var(--line);padding:20px 0 28px;
    display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:space-between;
    font-size:12.5px;color:var(--text-3);letter-spacing:.02em;text-align:center;
  }
  @media (min-width:768px){.footer-bottom{flex-direction:row;text-align:left}}

  @media (max-width:1023px){
    .nav-links{display:none}
    .search-box{display:none}
    .icon-btn{display:flex}
    .logo-badge{display:none}
  }
  @media (max-width:640px){
    .header-inner{gap:12px}
    .btn-ghost-sm{display:none}
    .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
    .hero-trust{gap:10px;font-size:13px}
    .hero-trust .bar{display:none}
    .visual-card{min-height:260px}
    .float-step{right:12px;bottom:12px;padding:10px 12px}
    .cta-actions{width:100%}
    .cta-actions .btn-primary,.cta-actions .btn-ghost{width:100%}
    .timeline::before{left:13px}
    .tl-dot{width:24px;height:24px;left:1px;font-size:11.5px}
    .tl-item{padding-left:44px}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    html{scroll-behavior:auto}
  }

/* roulang page: category2 */
:root{
  --bg-base:#060B12;
  --bg-raise:#0C1520;
  --glass:rgba(255,255,255,.045);
  --glass-strong:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#35D6C0;
  --brand-deep:#1FA694;
  --blue:#4C7DFF;
  --amber:#FFB067;
  --text:#E9F2F6;
  --text-2:#A3B6C2;
  --text-3:#6C808D;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --shadow-hover:0 24px 60px -22px rgba(53,214,192,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(6,11,18,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;transition:height .22s var(--ease);}
.site-header.scrolled{background:rgba(6,11,18,.94);}
.site-header.scrolled .header-inner{height:60px;}

.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:22px;height:22px;color:var(--brand);flex-shrink:0;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-line1{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--text);}
.logo-line2{font-size:11px;color:var(--text-3);letter-spacing:.06em;}
.logo-badge{
  font-size:11px;padding:2px 8px;border-radius:999px;
  border:1px solid rgba(53,214,192,.45);color:var(--brand);
  letter-spacing:.04em;flex-shrink:0;
}

.nav-links{display:flex;align-items:center;gap:24px;flex:1;justify-content:center;min-width:0;}
.nav-link{
  position:relative;font-size:14px;color:var(--text-2);padding:6px 0;
  white-space:nowrap;transition:color .2s var(--ease);
}
.nav-link:hover{color:var(--text);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  border-radius:2px;background:var(--brand);
}

.header-right{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:230px;height:40px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);
  background:var(--glass);color:var(--text-3);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box i{font-size:13px;}
.search-box input{
  flex:1;min-width:0;border:0;background:none;color:var(--text);
  font-size:14px;outline:none;
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(53,214,192,.15);
}
.kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;letter-spacing:.02em;flex-shrink:0;
}
.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-strong);font-size:14px;color:var(--text);
  white-space:nowrap;
  transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost-sm:hover{border-color:var(--brand);background:rgba(53,214,192,.06);color:var(--brand);}
.btn-primary-sm{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;border-radius:999px;
  font-size:14px;font-weight:600;color:#04201C;white-space:nowrap;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 26px -10px rgba(53,214,192,.55);
  transition:filter .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary-sm:hover{
  filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(53,214,192,.6),0 14px 36px -8px rgba(53,214,192,.7);
}
.btn-primary-sm:active{transform:translateY(0);filter:brightness(.96);}
.icon-btn{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--glass);color:var(--text);
  align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(53,214,192,.4);background:rgba(53,214,192,.08);}
.nav-toggle-icon{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;position:relative;}
.nav-toggle-icon::before,.nav-toggle-icon::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor;
}
.nav-toggle-icon::before{top:-6px;}
.nav-toggle-icon::after{top:6px;}

@media (max-width:1199px){.search-box{display:none;}}
@media (max-width:1023px){
  .nav-links{display:none;}
  .btn-ghost-sm,.btn-primary-sm{display:none;}
  .icon-btn{display:inline-flex;}
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,11,.66);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(88vw,340px);z-index:80;
  background:var(--bg-raise);border-left:1px solid var(--line);
  padding:20px;display:flex;flex-direction:column;gap:18px;
  transform:translateX(102%);transition:transform .26s var(--ease);overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-title{font-size:14px;color:var(--text-3);letter-spacing:.04em;}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);color:var(--text-2);display:flex;align-items:center;justify-content:center;}
.drawer-close:hover{color:var(--brand);border-color:rgba(53,214,192,.4);}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);background:var(--glass);color:var(--text-3);
}
.drawer-search input{flex:1;min-width:0;background:none;border:0;color:var(--text);font-size:14px;outline:none;}
.drawer-search input::placeholder{color:var(--text-3);}
.drawer-nav{display:grid;gap:4px;}
.drawer-nav a{
  padding:11px 12px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s var(--ease);
}
.drawer-nav a:hover{background:var(--glass);color:var(--text);border-color:var(--line);}
.drawer-nav a.active{color:var(--brand);background:rgba(53,214,192,.08);border-color:rgba(53,214,192,.3);}
.drawer-actions{margin-top:auto;display:grid;gap:10px;}
.drawer-actions .btn-primary-sm{width:100%;height:46px;}
.drawer-actions .btn-ghost-sm{width:100%;height:46px;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:64px 0 52px;
  background-image:linear-gradient(180deg,rgba(6,11,18,.84),rgba(6,11,18,.97)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-tex{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(ellipse at 50% 20%,#000 25%,transparent 82%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 20%,#000 25%,transparent 82%);
}
.hero-cloud{position:absolute;right:-40px;bottom:-30px;width:520px;max-width:70vw;opacity:.09;pointer-events:none;color:var(--brand);}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:900px;margin:0 auto;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--brand);
  padding:5px 14px;border-radius:999px;
  background:rgba(53,214,192,.08);border:1px solid rgba(53,214,192,.32);
}
h1{
  margin-top:22px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;font-weight:700;letter-spacing:-.02em;
  color:var(--text);
}
.hero-sub{
  margin:18px auto 0;max-width:640px;
  font-size:clamp(15px,1.4vw,17px);line-height:1.8;color:var(--text-2);
}
.switch-bar{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:30px;
}
.switch-pill{
  padding:9px 18px;border-radius:999px;font-size:14px;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.switch-pill:hover{border-color:rgba(53,214,192,.4);color:var(--text);transform:translateY(-1px);}
.switch-pill.active{
  background:var(--brand);border-color:var(--brand);color:#04201C;font-weight:600;
  box-shadow:0 0 0 1px rgba(53,214,192,.4),0 12px 30px -12px rgba(53,214,192,.65);
}
.hero-meta{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px 18px;
  margin-top:26px;font-size:14px;color:var(--text-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;}
.hero-meta i{color:var(--brand);font-size:12px;}

/* ---------- sections ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:72px 0;}}
.section-raise{background:var(--bg-raise);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:32px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;padding:4px 12px;border-radius:999px;
  background:rgba(53,214,192,.08);border:1px solid rgba(53,214,192,.28);color:var(--brand);
}
.tag-blue{background:rgba(76,125,255,.1);border-color:rgba(76,125,255,.3);color:#9DB6FF;}

/* ---------- device cards ---------- */
.device-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:900px){.device-grid{grid-template-columns:repeat(2,1fr);}}
.device-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.device-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;z-index:3;
  background:linear-gradient(90deg,rgba(255,255,255,.14),transparent);
}
.device-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover);}
.thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-raise);}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.device-card:hover .thumb img{transform:scale(1.03);}
.thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,18,.05),rgba(6,11,18,.6));}
.thumb-tag{position:absolute;left:16px;bottom:14px;z-index:2;}
.card-body{padding:22px;display:flex;flex-direction:column;gap:14px;flex:1;}
.card-body h3{font-size:20px;line-height:1.4;font-weight:600;}
.card-list{display:grid;gap:8px;}
.card-list li{
  position:relative;padding-left:16px;font-size:14px;line-height:1.75;color:var(--text-2);
}
.card-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--brand);opacity:.75;
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:auto;
  font-size:14px;color:var(--brand);transition:color .2s var(--ease),gap .2s var(--ease);
}
.text-link i{font-size:12px;transition:transform .2s var(--ease);}
.text-link:hover{color:#7BEDE0;gap:12px;}
.text-link:hover i{transform:translateX(2px);}

/* ---------- scenes ---------- */
.scene-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media (min-width:960px){.scene-grid{grid-template-columns:7fr 5fr;}}
.scene-list{display:grid;gap:16px;}
.strip{
  position:relative;padding:18px 22px 18px 26px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.strip::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:var(--brand);opacity:.85;
}
.strip:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);background:var(--glass-strong);}
.strip h3{font-size:16px;font-weight:600;line-height:1.5;}
.strip p{margin-top:6px;font-size:14px;line-height:1.75;color:var(--text-2);}
.check-card{
  padding:24px;border-radius:var(--radius-lg);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(53,214,192,.07),rgba(255,255,255,.03));
  box-shadow:var(--shadow-card);display:flex;flex-direction:column;gap:16px;
}
.check-card h3{font-size:18px;font-weight:600;}
.check-list{display:grid;gap:12px;}
.check-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--text-2);}
.check-list i{color:var(--brand);font-size:13px;margin-top:6px;flex-shrink:0;}
.check-note{font-size:13px;color:var(--text-3);letter-spacing:.02em;border-top:1px solid var(--line);padding-top:14px;}

/* ---------- note bar ---------- */
.note-bar{
  margin-top:32px;display:flex;align-items:flex-start;gap:10px;
  padding:14px 18px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:14px;line-height:1.7;color:var(--text-3);
}
.note-bar i{color:var(--amber);font-size:13px;margin-top:6px;flex-shrink:0;}

/* ---------- cta ---------- */
.cta-wrap{padding:56px 0;}
@media (min-width:768px){.cta-wrap{padding:72px 0;}}
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(6,11,18,.95),rgba(6,11,18,.78));
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(ellipse at 20% 50%,#000 10%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 20% 50%,#000 10%,transparent 75%);
}
.cta-inner{
  position:relative;z-index:2;padding:36px 24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
@media (min-width:768px){.cta-inner{padding:48px 40px;}}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;font-weight:700;}
.cta-copy p{margin-top:10px;font-size:15px;color:var(--text-2);}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;color:#04201C;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
  transition:filter .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  animation:breathe 2.4s ease-in-out infinite;
}
.btn-primary:hover{
  filter:brightness(1.08);transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(53,214,192,.6),0 16px 42px -6px rgba(53,214,192,.7);
}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:999px;font-size:15px;
  border:1px solid var(--line-strong);color:var(--text);
  transition:border-color .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(53,214,192,.06);color:var(--brand);}
@keyframes breathe{
  0%,100%{box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.5);}
  50%{box-shadow:0 0 0 1px rgba(53,214,192,.6),0 14px 40px -6px rgba(53,214,192,.66);}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* ---------- channels ---------- */
.channel-grid{display:grid;gap:16px;grid-template-columns:1fr;}
@media (min-width:640px){.channel-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:960px){.channel-grid{grid-template-columns:repeat(4,1fr);}}
.channel-card{
  display:flex;flex-direction:column;gap:8px;padding:20px;
  border-radius:var(--radius);border:1px solid var(--line);background:var(--glass);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.channel-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);background:var(--glass-strong);}
.channel-card h3{font-size:16px;font-weight:600;line-height:1.4;}
.channel-card p{font-size:14px;line-height:1.7;color:var(--text-2);}
.channel-card.is-current{
  cursor:default;opacity:.55;border-style:dashed;pointer-events:none;background:rgba(255,255,255,.02);
}
.channel-card.is-current h3{color:var(--text-3);}
.channel-cur{
  display:inline-flex;align-items:center;font-size:12px;color:var(--text-3);
  border:1px solid var(--line);border-radius:999px;padding:2px 10px;align-self:flex-start;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-raise);border-top:1px solid var(--line);
  padding:52px 0 26px;margin-top:8px;
}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}}
.footer-brand p{margin:14px 0 12px;font-size:14px;line-height:1.7;color:var(--text-2);max-width:300px;}
.footer-domain a{font-size:13px;color:var(--text-3);letter-spacing:.02em;transition:color .2s var(--ease);}
.footer-domain a:hover{color:var(--brand);}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
@media (max-width:767px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;}
  .footer-bottom{justify-content:center;text-align:center;}
}

/* roulang page: category3 */
:root{
  --bg-base:#060B12;
  --bg-raise:#0C1520;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --brand:#35D6C0;
  --brand-deep:#1FA694;
  --blue:#4C7DFF;
  --amber:#FFB067;
  --text:#E9F2F6;
  --text-2:#A3B6C2;
  --text-3:#6C808D;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --shadow-hover:0 24px 60px -22px rgba(53,214,192,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;
  background:var(--bg-base);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
button{font-family:inherit;font-size:inherit;border:0;background:none;color:inherit;cursor:pointer;appearance:none}
input{font-family:inherit;font-size:inherit}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.wrap,.site-header .container,.site-footer .container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media(min-width:768px){
  .wrap,.site-header .container,.site-footer .container{padding-left:32px;padding-right:32px}
}
.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
.section-alt{background:var(--bg-raise);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
[id]{scroll-margin-top:92px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(6,11,18,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.site-header.is-scrolled{background:rgba(6,11,18,.9)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:68px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.logo-mark{width:24px;height:24px;color:var(--brand);flex:0 0 auto}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:700}
.logo-line1{font-size:14px;letter-spacing:.01em}
.logo-line2{font-size:11px;font-weight:500;color:var(--text-2);letter-spacing:.06em}
.logo-badge{
  font-size:11px;line-height:1.7;padding:1px 8px;border-radius:999px;
  border:1px solid rgba(53,214,192,.42);color:var(--brand);
  background:rgba(53,214,192,.06);
}
.nav-links{display:none}
.nav-link{
  position:relative;display:inline-block;
  font-size:14px;color:var(--text-2);
  padding:21px 0;white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  border-radius:2px;background:var(--brand);
}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-box{
  display:none;align-items:center;gap:8px;
  height:38px;padding:0 12px;
  border-radius:999px;border:1px solid var(--line);
  background:var(--glass);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:rgba(53,214,192,.55);box-shadow:0 0 0 3px rgba(53,214,192,.15)}
.search-box i{font-size:12px;color:var(--text-3)}
.search-box input{
  width:132px;border:0;background:transparent;color:var(--text);
  font-size:13px;outline:none;
}
.search-box input::placeholder{color:var(--text-3)}
.kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--line);
  border-radius:6px;padding:0 5px;line-height:1.6;
}
.btn-primary-sm,.btn-ghost-sm{
  display:none;align-items:center;justify-content:center;
  height:36px;padding:0 16px;border-radius:999px;
  font-size:13px;font-weight:600;white-space:nowrap;
  transition:all .2s var(--ease);
}
.btn-ghost-sm{border:1px solid var(--line-strong);color:var(--text-2)}
.btn-ghost-sm:hover{border-color:rgba(53,214,192,.55);background:rgba(53,214,192,.06);color:var(--text)}
.btn-primary-sm{
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  color:#04201C;
  box-shadow:0 0 0 1px rgba(53,214,192,.45),0 8px 22px -10px rgba(53,214,192,.8);
}
.btn-primary-sm:hover{filter:brightness(1.08);transform:translateY(-1px)}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  border:1px solid var(--line);color:var(--text-2);
  transition:all .2s var(--ease);
}
.icon-btn:hover{border-color:rgba(53,214,192,.5);color:var(--brand)}
.nav-toggle-icon{position:relative;width:16px;height:10px;display:block}
.nav-toggle-icon::before,.nav-toggle-icon::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;border-radius:2px;background:currentColor;
}
.nav-toggle-icon::before{top:0}
.nav-toggle-icon::after{bottom:0}
@media(min-width:1180px){
  .nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
  .search-box{display:flex}
  .btn-ghost-sm,.btn-primary-sm{display:inline-flex}
  .icon-btn{display:none}
}
@media(min-width:640px){
  .btn-ghost-sm{display:inline-flex}
}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:120;pointer-events:none}
.drawer-backdrop{
  position:absolute;inset:0;background:rgba(3,7,11,.6);
  opacity:0;transition:opacity .24s var(--ease);
}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--bg-raise);
  border-left:1px solid var(--line);
  padding:20px;
  display:flex;flex-direction:column;gap:20px;
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-backdrop{opacity:1}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{
  width:34px;height:34px;border-radius:10px;border:1px solid var(--line);
  color:var(--text-2);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  height:42px;padding:0 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
}
.drawer-search i{font-size:13px;color:var(--text-3)}
.drawer-search input{flex:1;border:0;background:transparent;outline:none;color:var(--text);font-size:14px}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{
  font-size:15px;color:var(--text-2);padding:11px 12px;border-radius:10px;
  transition:all .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(255,255,255,.05);color:var(--text)}
.drawer-nav a.is-active{color:var(--brand);background:rgba(53,214,192,.08)}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* ---------- 通用组件 ---------- */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(10px);
}
.glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.14),rgba(255,255,255,0));
  border-radius:inherit;pointer-events:none;
}
.btn-primary{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  color:#04201C;font-size:15px;font-weight:600;
  box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-primary::after{
  content:"";position:absolute;inset:-1px;border-radius:inherit;
  box-shadow:0 0 24px 2px rgba(53,214,192,.5);
  animation:glowPulse 2.4s ease-in-out infinite;pointer-events:none;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(53,214,192,.62),0 14px 40px -6px rgba(53,214,192,.7)}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-primary:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
@keyframes glowPulse{0%,100%{opacity:.22}50%{opacity:.6}}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--text-2);
  font-size:15px;font-weight:600;background:transparent;
  transition:all .2s var(--ease);
}
.btn-ghost:hover{border-color:rgba(53,214,192,.55);background:rgba(53,214,192,.06);color:var(--text)}
.btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.link-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
  transition:color .2s var(--ease);
}
.link-text:hover{color:#7FF0E1}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.02em;line-height:1.9;
  padding:1px 12px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--text-2);
}
.badge-brand{background:rgba(53,214,192,.08);border-color:rgba(53,214,192,.35);color:var(--brand)}
.badge-blue{background:rgba(76,125,255,.08);border-color:rgba(76,125,255,.35);color:#A8BEFF}
.section-head{max-width:720px;margin-bottom:28px}
.section-title{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-desc{margin-top:12px;font-size:15px;color:var(--text-2);line-height:1.8}
.value-num{font-variant-numeric:tabular-nums;color:var(--amber);font-weight:700}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:52px 0 48px;border-bottom:1px solid var(--line)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.26;filter:saturate(.85);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,.84) 0%,rgba(6,11,18,.93) 62%,var(--bg-base) 100%);
}
.hero-mesh{
  position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(ellipse at 30% 20%,#000 30%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse at 30% 20%,#000 30%,transparent 78%);
}
.hero-cloud{
  position:absolute;right:-60px;top:-30px;width:620px;height:auto;z-index:1;
  opacity:.07;pointer-events:none;
}
.hero-grid{position:relative;z-index:2;display:grid;gap:36px}
@media(min-width:1024px){
  .hero{padding:76px 0 68px}
  .hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
}
.hero-title{
  margin-top:18px;
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;font-weight:700;letter-spacing:-.02em;
}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin-top:24px;font-size:14px;color:var(--text-3);
}
.hero-trust li{position:relative;padding-left:14px}
.hero-trust li::before{
  content:"";position:absolute;left:0;top:50%;width:4px;height:4px;border-radius:50%;
  background:rgba(53,214,192,.7);transform:translateY(-50%);
}
.hero-trust li + li{padding-left:24px}
.hero-trust li + li::after{
  content:"";position:absolute;left:8px;top:50%;width:1px;height:12px;
  background:var(--line-strong);transform:translateY(-50%);
}
.hero-visual{position:relative}
.hero-card{overflow:hidden;border-radius:var(--r-lg)}
.hero-card-media{position:relative;aspect-ratio:16/9;overflow:hidden}
.hero-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.hero-card:hover .hero-card-media img{transform:scale(1.03)}
.hero-card-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,11,18,.15),rgba(6,11,18,.78));
}
.hero-card-body{padding:16px 20px 20px;display:flex;flex-direction:column;gap:10px}
.status-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px}
.status-row span{color:var(--text-3)}
.status-row strong{color:var(--text);font-weight:600;font-size:14px}
.hero-float{
  position:absolute;right:14px;bottom:-18px;
  display:flex;align-items:center;gap:10px;
  padding:10px 14px;border-radius:var(--r-sm);
  box-shadow:0 18px 40px -18px rgba(0,0,0,.9);
}
.hero-float .dot{
  width:8px;height:8px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 4px rgba(53,214,192,.16);
}
.tiny{font-size:12px;letter-spacing:.02em;color:var(--text-3)}
.float-text{font-size:13px;font-weight:600;color:var(--text)}

/* ---------- 提示带 ---------- */
.notice-band{
  display:flex;align-items:flex-start;gap:12px;
  padding:14px 20px;
  border-left:3px solid var(--amber);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  background:rgba(255,176,103,.08);
  margin-bottom:32px;
}
.notice-band i{color:var(--amber);font-size:15px;line-height:1.9}
.notice-band p{font-size:15px;line-height:1.7;color:#F3D9C2}

/* ---------- 核对卡片 ---------- */
.check-grid{display:grid;gap:16px}
@media(min-width:768px){.check-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.strip-card{
  position:relative;
  padding:20px 22px 20px 24px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:var(--glass);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.strip-card::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;
  background:var(--brand);opacity:.85;
}
.strip-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover)}
.strip-card h3{font-size:17px;font-weight:600;margin-bottom:8px}
.strip-card p{font-size:14px;color:var(--text-2);line-height:1.8}
.stat-row{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;margin-top:20px;
  padding:20px 12px;border-radius:var(--r-md);
  border:1px solid var(--line);background:rgba(12,21,32,.66);
}
.stat-item{text-align:center}
.stat-num{font-size:clamp(24px,3vw,30px);line-height:1.2;font-variant-numeric:tabular-nums;color:var(--amber);font-weight:700}
.stat-label{font-size:13px;color:var(--text-3);margin-top:4px}

/* ---------- 折叠问答 ---------- */
.faq-layout{display:grid;gap:26px}
@media(min-width:1024px){
  .faq-layout{grid-template-columns:minmax(0,3fr) minmax(0,7fr);gap:32px;align-items:start}
  .faq-anchors{position:sticky;top:92px}
}
.anchors-card{padding:20px}
.anchors-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px}
.anchors-list{display:flex;flex-direction:column;gap:2px}
.anchors-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);
  transition:all .2s var(--ease);
}
.anchors-list a span{font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.anchors-list a:hover{background:rgba(53,214,192,.07);color:var(--brand)}
.anchors-card .link-text{margin-top:16px}
.faq-group + .faq-group{margin-top:28px}
.faq-group-title{
  display:flex;align-items:center;gap:10px;
  font-size:19px;font-weight:600;margin-bottom:14px;
}
.faq-group-title::before{
  content:"";width:3px;height:18px;border-radius:2px;background:var(--brand);
}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--glass);overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item + .faq-item{margin-top:12px}
.faq-item:hover{border-color:rgba(53,214,192,.28)}
.faq-item.is-open{border-color:rgba(53,214,192,.36);box-shadow:0 18px 40px -26px rgba(53,214,192,.5)}
.faq-trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:17px 20px;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  transition:color .2s var(--ease);
}
.faq-trigger:hover{color:var(--brand)}
.faq-trigger .chev{font-size:12px;color:var(--text-3);transition:transform .26s var(--ease),color .2s var(--ease)}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--brand)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-panel-inner{padding:0 20px 18px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{position:relative;padding:48px 0 40px;overflow:hidden;border-top:1px solid var(--line)}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  filter:blur(8px);opacity:.3;transform:scale(1.06);
}
.cta-band::after{content:"";position:absolute;inset:0;background:rgba(6,11,18,.84)}
.cta-inner{
  position:relative;z-index:2;
  display:flex;flex-direction:column;gap:20px;
  padding:26px 24px;border-radius:var(--r-lg);
}
@media(min-width:768px){
  .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:32px 36px}
}
.cta-inner h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.3}
.cta-inner p{margin-top:8px;font-size:15px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.terminal-note{
  position:relative;z-index:2;
  margin-top:18px;font-size:12px;letter-spacing:.04em;color:var(--text-3);
}

/* ---------- 其他频道 ---------- */
.channel-grid{display:grid;gap:16px}
@media(min-width:640px){.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.channel-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.channel-card{
  display:flex;flex-direction:column;gap:8px;
  padding:20px;border-radius:var(--r-md);
  border:1px solid var(--line);background:var(--glass);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.channel-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.3);box-shadow:var(--shadow-hover)}
.channel-card h3{font-size:16px;font-weight:600}
.channel-card p{font-size:13px;color:var(--text-3);line-height:1.7}
.channel-card .arrow{font-size:12px;color:var(--text-3);margin-top:4px}
.channel-card:hover .arrow{color:var(--brand)}
.channel-card.is-current{opacity:.45;pointer-events:none;border-style:dashed}
.channel-card.is-current .arrow{color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-raise);border-top:1px solid var(--line);padding:48px 0 26px;margin-top:8px}
.footer-grid{display:grid;gap:28px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--text-3);line-height:1.7;max-width:24em}
.footer-domain{margin-top:14px;font-size:13px;letter-spacing:.02em;color:var(--text-3)}
.footer-domain a{color:var(--text-3);text-decoration:underline;text-underline-offset:4px}
.footer-domain a:hover{color:var(--brand)}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:14px;font-weight:600}
.footer-col li + li{margin-top:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-2);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-direction:column;gap:8px;
  margin-top:34px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
@media(min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg-base:#060B12;
  --bg-raise:#0C1520;
  --glass:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.09);
  --brand:#35D6C0;
  --brand-deep:#1FA694;
  --blue:#4C7DFF;
  --amber:#FFB067;
  --text:#E9F2F6;
  --text-2:#A3B6C2;
  --text-3:#6C808D;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-card:0 18px 40px -20px rgba(0,0,0,.8);
  --shadow-hover:0 24px 60px -22px rgba(53,214,192,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg-base);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  position:relative;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 82% -12%, rgba(53,214,192,.10), transparent 70%),
    radial-gradient(720px 420px at 6% 2%, rgba(76,125,255,.08), transparent 72%);
}
main,header,footer{position:relative;z-index:1}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
a:hover{color:var(--brand)}
img{max-width:100%;display:block}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,214,192,.28);color:#fff}

body .container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:20px}
@media(min-width:768px){body .container{padding-inline:32px}}

/* ---------- 玻璃与底纹 ---------- */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.glass::before{
  content:"";
  position:absolute;
  left:0;right:0;top:0;height:1px;
  border-radius:inherit;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.14),transparent);
  pointer-events:none;
}
.grid-tex{
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:24px 24px;
  background-position:center top;
}
.cloud-lines{position:relative;overflow:hidden}
.cloud-lines::after{
  content:"";
  position:absolute;
  top:-260px;right:-180px;
  width:620px;height:620px;
  border-radius:50%;
  border:1px solid rgba(53,214,192,.09);
  box-shadow:
    0 0 0 46px rgba(53,214,192,.035),
    0 0 0 132px rgba(53,214,192,.02),
    0 0 0 220px rgba(53,214,192,.012);
  pointer-events:none;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:68px;
  background:rgba(6,11,18,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:height .22s var(--ease),background .22s var(--ease);
}
.site-header.shrink{height:60px;background:rgba(6,11,18,.94)}
.header-inner{display:flex;align-items:center;gap:14px;height:100%}
.logo{display:inline-flex;align-items:center;gap:9px;flex-shrink:0}
.logo-mark{width:26px;height:26px;color:var(--brand);flex-shrink:0}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-line1{font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--text)}
.logo-line2{font-size:11px;letter-spacing:.10em;color:var(--text-3)}
.logo-badge{
  font-size:12px;line-height:1;padding:5px 9px;border-radius:999px;
  color:var(--brand);border:1px solid rgba(53,214,192,.45);
  background:rgba(53,214,192,.08);white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-link{
  position:relative;font-size:14px;color:var(--text-2);white-space:nowrap;
  padding:22px 0;transition:color .2s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  border-radius:2px;background:var(--brand);
}
.header-right{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;
  flex:1 1 auto;min-width:110px;max-width:200px;
  height:36px;padding:0 12px;border-radius:999px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(53,214,192,.15)}
.search-box i{font-size:12px;color:var(--text-3)}
.search-box input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  color:var(--text);font-size:13px;
}
.search-box input::placeholder{color:var(--text-3)}
.kbd{
  font-size:11px;color:var(--text-3);border:1px solid var(--line);
  border-radius:6px;padding:1px 5px;line-height:1.5;white-space:nowrap;
}
.btn-primary,.btn-ghost,.btn-primary-sm,.btn-ghost-sm{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:999px;border:1px solid transparent;
  font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  height:48px;padding:0 26px;font-size:15px;
  color:#04201C;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55);
  animation:glowPulse 2.4s ease-in-out infinite;
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04201C}
.btn-primary:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  height:48px;padding:0 24px;font-size:15px;color:var(--text);
  background:transparent;border-color:rgba(255,255,255,.16);
}
.btn-ghost:hover{border-color:rgba(53,214,192,.6);background:rgba(53,214,192,.06);color:var(--text)}
.btn-primary-sm{
  height:38px;padding:0 16px;font-size:13.5px;color:#04201C;
  background:linear-gradient(135deg,#35D6C0,#1FA694);
  box-shadow:0 0 0 1px rgba(53,214,192,.45),0 8px 22px -10px rgba(53,214,192,.6);
}
.btn-primary-sm:hover{filter:brightness(1.08);transform:translateY(-1px);color:#04201C}
.btn-ghost-sm{
  height:38px;padding:0 15px;font-size:13.5px;color:var(--text-2);
  border-color:rgba(255,255,255,.16);background:transparent;
}
.btn-ghost-sm:hover{color:var(--brand);border-color:rgba(53,214,192,.55);background:rgba(53,214,192,.06)}
.link-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  text-decoration:underline;text-underline-offset:4px;
  text-decoration-color:rgba(53,214,192,.45);
  transition:color .2s var(--ease),text-decoration-color .2s var(--ease);
}
.link-text:hover{color:#7BE8DA;text-decoration-color:#7BE8DA}
@keyframes glowPulse{
  0%,100%{box-shadow:0 0 0 1px rgba(53,214,192,.5),0 10px 30px -8px rgba(53,214,192,.55)}
  50%{box-shadow:0 0 0 1px rgba(53,214,192,.7),0 14px 42px -6px rgba(53,214,192,.7)}
}
.icon-btn{
  display:none;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text);
}
.icon-btn:hover{border-color:rgba(53,214,192,.5);color:var(--brand)}
.nav-toggle-icon,.nav-toggle-icon::before,.nav-toggle-icon::after{
  display:block;width:16px;height:1.6px;border-radius:2px;background:currentColor;
}
.nav-toggle-icon{position:relative}
.nav-toggle-icon::before,.nav-toggle-icon::after{content:"";position:absolute;left:0}
.nav-toggle-icon::before{top:-5px}
.nav-toggle-icon::after{top:5px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(3,7,11,.66);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:min(320px,86vw);
  display:flex;flex-direction:column;gap:18px;
  padding:18px 18px 24px;
  background:linear-gradient(180deg,#0C1520,#070D15);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-title{font-size:15px;font-weight:600;color:var(--text)}
.drawer-close{
  width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.06);
  border:1px solid var(--line);color:var(--text-2);font-size:18px;line-height:1;cursor:pointer;
}
.drawer-close:hover{color:var(--brand);border-color:rgba(53,214,192,.5)}
.drawer-search{max-width:none;width:100%;height:40px}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  padding:12px 10px;border-radius:10px;font-size:14.5px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-nav a:hover{background:rgba(53,214,192,.08);color:var(--brand)}
.drawer-nav a.active{color:var(--brand);background:rgba(53,214,192,.10);font-weight:600}
.drawer-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.drawer-actions .btn-ghost,.drawer-actions .btn-primary{width:100%}

/* ---------- 首屏 ---------- */
.hero{padding:44px 0 20px}
@media(min-width:768px){.hero{padding:64px 0 24px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:44px}}
.crumb{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--text-3);margin-bottom:18px;
}
.crumb span{color:rgba(255,255,255,.2)}
.crumb:hover{color:var(--brand)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 11px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);background:rgba(255,255,255,.04);
}
.badge-brand{
  color:var(--brand);border-color:rgba(53,214,192,.4);
  background:rgba(53,214,192,.08);margin-bottom:18px;
}
.h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--text);
}
.hero-sub{
  margin-top:16px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:44ch;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:26px;font-size:14px;color:var(--text-3);
}
.trust-line i{display:block;width:1px;height:12px;background:rgba(255,255,255,.14)}
.hero-visual{position:relative}
.visual-card{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
.visual-card img{width:100%;height:auto;aspect-ratio:16/11;object-fit:cover}
.visual-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,18,.35) 0%,rgba(6,11,18,.72) 55%,rgba(6,11,18,.88) 100%)}
.visual-rows{position:absolute;left:18px;right:18px;bottom:18px;display:grid;gap:10px}
.vr{
  display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:999px;
  font-size:13.5px;color:var(--text-2);
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.vr .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(53,214,192,.8);flex-shrink:0}
.float-card{
  position:absolute;right:-6px;bottom:-22px;width:210px;
  padding:16px 18px;border-radius:var(--r-md);
  background:rgba(12,21,32,.9);border:1px solid rgba(53,214,192,.28);
  box-shadow:0 20px 46px -22px rgba(53,214,192,.5);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
@media(max-width:1023px){
  .hero-visual{order:2}
  .visual-card img{aspect-ratio:16/9;height:250px}
  .float-card{position:static;width:100%;margin-top:14px;right:auto;bottom:auto}
}
.float-step{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.04em;
  color:var(--amber);border:1px solid rgba(255,176,103,.45);
  background:rgba(255,176,103,.10);border-radius:999px;padding:4px 10px;
}
.float-card p{margin-top:10px;font-size:13.5px;color:var(--text-2)}
.dots{display:flex;gap:6px;margin-top:12px}
.dots i{display:block;width:22px;height:4px;border-radius:2px;background:rgba(255,255,255,.14)}
.dots i.on{background:var(--brand);box-shadow:0 0 10px rgba(53,214,192,.7)}

/* ---------- 板块通用 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:76px 0}}
.section-head{margin-bottom:28px;display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;justify-content:space-between}
.section-head .lead{max-width:56ch}
.h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--text);
}
.lead{margin-top:12px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- 对照表 ---------- */
.table-shell{padding:6px;border-radius:var(--r-lg)}
.table-scroll{overflow-x:auto;border-radius:var(--r-md)}
.cmp-table{width:100%;min-width:660px;border-collapse:separate;border-spacing:0;font-size:15px}
.cmp-table caption{caption-side:top;text-align:left;padding:14px 18px 10px;font-size:13px;color:var(--text-3)}
.cmp-table thead th{
  text-align:left;font-size:13px;letter-spacing:.04em;color:var(--text-3);
  font-weight:600;padding:13px 18px;background:rgba(255,255,255,.05);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.cmp-table thead th:first-child{border-top-left-radius:12px}
.cmp-table thead th:last-child{border-top-right-radius:12px}
.cmp-table tbody td{
  padding:15px 18px;border-bottom:1px solid rgba(255,255,255,.06);
  color:var(--text-2);vertical-align:top;line-height:1.7;
}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr{transition:background .2s var(--ease)}
.cmp-table tbody tr:hover{background:rgba(255,255,255,.05)}
.cmp-table tbody td:first-child{font-weight:600;color:var(--text);white-space:nowrap}
.cmp-table tbody td:nth-child(2){color:var(--text-2)}
.cmp-tip{display:flex;gap:10px;align-items:flex-start;margin-top:16px;font-size:13.5px;color:var(--text-3)}
.cmp-tip i{color:var(--amber);margin-top:4px}

/* ---------- 帮助入口窄条卡 ---------- */
.strip-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.strip-grid{grid-template-columns:repeat(3,1fr)}}
.strip-card{
  position:relative;padding:22px 22px 22px 26px;border-radius:var(--r-md);
  background:var(--glass);border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.strip-card::after{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  border-radius:3px;background:linear-gradient(180deg,#35D6C0,#1FA694);
}
.strip-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.32);box-shadow:var(--shadow-hover)}
.strip-card h3{font-size:17px;font-weight:600;color:var(--text)}
.strip-card p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--text-2)}
.strip-card .link-text{margin-top:14px;font-size:13.5px}

/* ---------- 时间线 ---------- */
.timeline{display:grid;gap:0;max-width:860px}
.tl-item{position:relative;display:grid;grid-template-columns:auto 1fr;gap:16px;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-item:not(:last-child)::before{
  content:"";position:absolute;left:16px;top:40px;bottom:2px;width:1px;
  background:linear-gradient(180deg,rgba(53,214,192,.45),rgba(53,214,192,.05));
}
.tl-node{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--amber);background:rgba(255,176,103,.10);
  border:1px solid rgba(255,176,103,.45);flex-shrink:0;
}
.tl-body{padding-top:2px}
.tl-day{font-size:13px;letter-spacing:.02em;color:var(--text-3);font-variant-numeric:tabular-nums}
.tl-body h3{font-size:17px;font-weight:600;margin-top:4px;color:var(--text)}
.tl-body p{margin-top:6px;font-size:14.5px;line-height:1.8;color:var(--text-2);max-width:62ch}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  padding:32px 26px;
  display:grid;gap:20px;
  border:1px solid rgba(53,214,192,.22);
  background:linear-gradient(120deg,rgba(53,214,192,.10),rgba(12,21,32,.9) 55%),rgba(12,21,32,.86);
}
@media(min-width:900px){
  .cta-band{grid-template-columns:1fr auto;align-items:center;padding:34px 38px}
}
.cta-band h2{font-size:clamp(21px,2.2vw,28px);font-weight:700;line-height:1.3}
.cta-band p{margin-top:8px;font-size:14.5px;color:var(--text-2)}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.cta-foot{
  grid-column:1/-1;font-size:12px;letter-spacing:.04em;color:var(--text-3);
  border-top:1px solid rgba(255,255,255,.08);padding-top:14px;
}
@media(max-width:640px){
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn-primary{width:100%}
  .cta-actions .link-text{justify-content:center}
}

/* ---------- 其他频道 ---------- */
.channel-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:640px){.channel-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.channel-grid{grid-template-columns:repeat(4,1fr)}}
.channel-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-md);border:1px solid var(--line);
  background:var(--glass);box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.channel-card:hover{transform:translateY(-2px);border-color:rgba(53,214,192,.34);box-shadow:var(--shadow-hover)}
.ch-cover{position:relative;overflow:hidden;aspect-ratio:16/9;background:#0A121B}
.ch-cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.channel-card:hover .ch-cover img{transform:scale(1.03)}
.ch-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,18,.15),rgba(6,11,18,.7))}
.ch-body{padding:16px 18px 20px}
.ch-body h3{font-size:15.5px;font-weight:600;color:var(--text);line-height:1.4}
.ch-body p{margin-top:6px;font-size:13.5px;line-height:1.7;color:var(--text-2)}
.ch-tag{
  display:inline-block;margin-top:12px;font-size:12px;line-height:1;
  padding:5px 10px;border-radius:999px;color:var(--brand);
  background:rgba(53,214,192,.08);border:1px solid rgba(53,214,192,.35);
}
.channel-card.is-current{opacity:.55;pointer-events:none;filter:grayscale(.4)}
.channel-card.is-current .ch-tag{color:var(--text-3);border-color:var(--line);background:rgba(255,255,255,.05)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:24px;
  background:var(--bg-raise);
  border-top:1px solid var(--line);
  padding:48px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:13.5px;line-height:1.8;color:var(--text-3);max-width:26ch}
.footer-domain{margin-top:14px;font-size:13px;color:var(--text-3)}
.footer-domain a{color:var(--text-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(255,255,255,.18)}
.footer-domain a:hover{color:var(--brand);text-decoration-color:rgba(53,214,192,.6)}
.footer-col h4{font-size:13px;letter-spacing:.06em;color:var(--text-2);font-weight:600;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col li a,.footer-col li span{font-size:13.5px;color:var(--text-3);transition:color .2s var(--ease)}
.footer-col li a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);letter-spacing:.02em;
}
@media(max-width:639px){
  .footer-bottom{justify-content:center;text-align:center}
}

/* ---------- 响应式导航 ---------- */
@media(max-width:1279px){
  .search-box{max-width:170px}
}
@media(max-width:1099px){
  .nav-links{display:none}
  .search-box{display:none}
  .btn-ghost-sm{display:none}
  .icon-btn{display:flex}
}
@media(max-width:520px){
  .logo-badge{display:none}
  .btn-primary-sm{padding:0 13px}
  .hero-actions .btn-primary,.hero-actions .btn-ghost{width:100%}
  .trust-line{font-size:13px;gap:10px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}