/* roulang page: index */
:root{
    --brand:#5B3DF5;
    --brand2:#8A3BE0;
    --brand3:#C43C9E;
    --teal:#00B39A;
    --warm:#FF7A45;
    --ink:#1A1730;
    --sub:#5A5770;
    --mute:#8B88A0;
    --line:#E8E6F2;
    --surface:#F7F7FB;
    --dark:#131029;
    --grad:linear-gradient(135deg,#5B3DF5 0%,#8A3BE0 55%,#C43C9E 100%);
    --radius-lg:24px;
    --radius-sm:16px;
    --radius-btn:12px;
    --shadow-1:0 1px 2px rgba(26,23,48,.04), 0 12px 32px -12px rgba(91,61,245,.18);
    --shadow-2:0 1px 2px rgba(26,23,48,.05), 0 20px 48px -16px rgba(91,61,245,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    background:var(--surface);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.25;}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  .u-container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
  a:focus-visible,button:focus-visible,input:focus-visible{
    outline:2px solid var(--brand);
    outline-offset:2px;
    border-radius:8px;
  }
  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.94);
    border-bottom:1px solid rgba(26,23,48,.08);
    transition:box-shadow .3s var(--ease),background .3s var(--ease);
  }
  .site-header.is-scrolled{box-shadow:0 6px 24px -14px rgba(26,23,48,.28);}
  .nav-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:64px;
    transition:height .3s var(--ease);
  }
  .site-header.is-scrolled .nav-row{height:56px;}
  .brand-mark{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:18px;
    font-weight:800;
    letter-spacing:.02em;
    white-space:nowrap;
  }
  .brand-dot{
    width:12px;height:12px;border-radius:4px;
    background:var(--grad);
    display:inline-block;
    flex:0 0 auto;
  }
  .nav-links{display:flex;align-items:center;gap:30px;}
  .nav-link{
    position:relative;
    font-size:15px;
    letter-spacing:.02em;
    color:var(--sub);
    padding:6px 0;
    transition:color .3s var(--ease);
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:0;bottom:0;
    width:60%;height:2px;
    border-radius:2px;
    background:var(--grad);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .3s var(--ease);
  }
  .nav-link:hover{color:var(--ink);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--ink);font-weight:700;}
  .nav-link.is-active::after{transform:scaleX(1);}
  .nav-ghost{
    font-size:14px;
    letter-spacing:.02em;
    color:var(--brand);
    font-weight:700;
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:8px 2px;
    transition:opacity .3s var(--ease);
  }
  .nav-ghost:hover{opacity:.72;}
  .burger{
    display:none;
    width:44px;height:44px;
    align-items:center;
    justify-content:center;
    border:1px solid var(--line);
    border-radius:12px;
    background:#fff;
    cursor:pointer;
  }
  .burger span{
    display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;
  }
  .burger span::before,.burger span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
    transition:transform .3s var(--ease);
  }
  .burger span::before{top:-6px;}
  .burger span::after{top:6px;}
  .drawer{
    position:fixed;
    inset:0;
    background:#fff;
    z-index:80;
    transform:translateX(100%);
    transition:transform .32s var(--ease);
    display:flex;
    flex-direction:column;
    padding:20px 20px 32px;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;height:56px;}
  .drawer-close{
    width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;
    font-size:20px;line-height:1;color:var(--sub);
  }
  .drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:20px 4px;
    font-size:19px;font-weight:700;
    border-bottom:1px solid rgba(26,23,48,.08);
  }
  .drawer a.drawer-link span{font-size:13px;font-weight:500;color:var(--mute);}
  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:48px;
    padding:0 26px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:700;
    letter-spacing:.01em;
    border:1px solid transparent;
    cursor:pointer;
    transition:all .3s var(--ease);
  }
  .btn-primary{
    background:var(--grad);
    color:#fff;
    box-shadow:0 10px 26px -12px rgba(91,61,245,.6);
  }
  .btn-primary:hover{
    filter:brightness(1.05);
    transform:translateY(-2px);
    box-shadow:0 18px 38px -14px rgba(91,61,245,.55);
  }
  .btn-outline{
    background:rgba(255,255,255,.06);
    border-color:rgba(255,255,255,.4);
    color:#fff;
  }
  .btn-outline:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
  .btn-light{
    background:#fff;
    color:var(--ink);
    border-color:var(--line);
  }
  .btn-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
  .btn-ghost-warm{
    background:var(--warm);
    color:#fff;
    box-shadow:0 10px 26px -12px rgba(255,122,69,.65);
  }
  .btn-ghost-warm:hover{filter:brightness(1.05);transform:translateY(-2px);}
  .text-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    font-weight:700;
    color:var(--brand);
  }
  .text-link::after{
    content:"";
    position:absolute;
    left:0;bottom:-4px;
    height:1px;width:100%;
    background:currentColor;
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .3s var(--ease);
  }
  .text-link:hover::after{transform:scaleX(1);}
  .arrow-ico{width:12px;height:12px;flex:0 0 auto;}
  /* ---------- Hero ---------- */
  .hero-card{
    position:relative;
    overflow:hidden;
    border-radius:28px;
    background:var(--grad);
    box-shadow:var(--shadow-2);
    min-height:620px;
    display:grid;
    grid-template-columns:5fr 7fr;
    gap:0;
  }
  .hero-grid-texture{
    position:absolute;
    inset:0;
    opacity:.07;
    background-image:
      linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
    background-size:44px 44px;
    pointer-events:none;
  }
  .hero-copy{
    position:relative;
    z-index:3;
    padding:64px 20px 64px 56px;
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap:22px;
    color:#fff;
  }
  .hero-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    align-self:flex-start;
    padding:7px 14px;
    border-radius:999px;
    font-size:13px;
    letter-spacing:.04em;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.24);
    color:#fff;
  }
  .hero-copy h1{
    font-size:clamp(30px,4.2vw,52px);
    line-height:1.14;
    letter-spacing:-.02em;
  }
  .hero-sub{
    font-size:16px;
    line-height:1.85;
    color:rgba(255,255,255,.86);
    max-width:30em;
  }
  .hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin-top:6px;}
  .hero-link{
    color:#fff;
    font-size:14px;
    font-weight:700;
    display:inline-flex;
    align-items:center;
    gap:8px;
  }
  .hero-link:hover{text-decoration:underline;text-underline-offset:4px;}
  .hero-visual{
    position:relative;
    z-index:2;
    overflow:hidden;
  }
  .hero-visual img{
    width:100%;height:100%;
    object-fit:cover;
    object-position:center;
  }
  .hero-visual::after{
    content:"";
    position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(91,61,245,.92) 0%,rgba(91,61,245,.32) 34%,rgba(196,60,158,.08) 72%);
  }
  .hero-float-badge{
    position:absolute;
    left:26px;bottom:26px;
    z-index:4;
    background:#fff;
    border-radius:18px;
    padding:16px 20px;
    box-shadow:0 20px 44px -18px rgba(19,16,41,.5);
    min-width:172px;
  }
  .hero-float-badge .fb-num{
    font-size:26px;font-weight:800;color:var(--brand);line-height:1.1;
  }
  .hero-float-badge .fb-txt{font-size:13px;color:var(--mute);margin-top:4px;}
  /* ---------- 徽章条 ---------- */
  .stat-strip{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:16px;
    margin-top:20px;
  }
  .stat-pill{
    background:#fff;
    border:1px solid var(--line);
    border-radius:999px;
    padding:16px 22px;
    display:flex;
    align-items:baseline;
    gap:10px;
    box-shadow:var(--shadow-1);
  }
  .stat-pill .sp-num{
    font-size:23px;
    font-weight:800;
    color:var(--teal);
    line-height:1;
  }
  .stat-pill .sp-label{font-size:13px;color:var(--sub);}
  /* ---------- 区块通用 ---------- */
  .section{padding-top:96px;}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:34px;
  }
  .section-kicker{
    font-size:13px;
    letter-spacing:.16em;
    color:var(--brand);
    font-weight:700;
    text-transform:uppercase;
    margin-bottom:10px;
  }
  .section-title{font-size:clamp(24px,3vw,31px);}
  .section-desc{margin-top:10px;font-size:15px;color:var(--sub);max-width:60ch;}
  /* ---------- 合集目录 ---------- */
  .catalog-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:0 32px;
    border-top:1px solid rgba(26,23,48,.08);
  }
  .catalog-item{
    padding:26px 0 24px;
    border-bottom:1px solid rgba(26,23,48,.08);
    display:flex;
    flex-direction:column;
    gap:8px;
    transition:transform .3s var(--ease);
  }
  .catalog-item:hover{transform:translateY(-3px);}
  .catalog-idx{
    font-size:13px;
    font-weight:800;
    color:var(--brand);
    letter-spacing:.1em;
  }
  .catalog-name{font-size:17px;font-weight:800;}
  .catalog-note{font-size:13px;color:var(--mute);min-height:20px;}
  .catalog-foot{
    display:flex;
    justify-content:flex-end;
    margin-top:6px;
  }
  .count-pill{
    display:inline-flex;
    align-items:center;
    padding:3px 12px;
    border-radius:999px;
    background:rgba(91,61,245,.08);
    color:var(--brand);
    font-size:12px;
    font-weight:700;
  }
  /* ---------- 精选条目 ---------- */
  .feature-grid{
    display:grid;
    grid-template-columns:7fr 5fr;
    gap:24px;
  }
  .feature-main{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    overflow:hidden;
    box-shadow:var(--shadow-1);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease);
    display:flex;
    flex-direction:column;
  }
  .feature-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .feature-main .cover{aspect-ratio:16/9;overflow:hidden;}
  .feature-main .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .feature-main:hover .cover img{transform:scale(1.03);}
  .feature-body{padding:26px 28px 30px;display:flex;flex-direction:column;gap:12px;}
  .feature-body h3{font-size:24px;transition:color .3s var(--ease);}
  .feature-main:hover h3{color:var(--brand);}
  .feature-body p{font-size:15px;color:var(--sub);line-height:1.8;}
  .feature-side{display:flex;flex-direction:column;gap:24px;}
  .mini-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    overflow:hidden;
    display:grid;
    grid-template-columns:132px 1fr;
    box-shadow:var(--shadow-1);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease);
    flex:1;
  }
  .mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .mini-card .mini-cover{overflow:hidden;}
  .mini-card .mini-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .mini-card:hover .mini-cover img{transform:scale(1.04);}
  .mini-body{padding:20px 22px;display:flex;flex-direction:column;gap:8px;justify-content:center;}
  .mini-body h3{font-size:18px;transition:color .3s var(--ease);}
  .mini-card:hover h3{color:var(--brand);}
  .mini-body p{font-size:13px;color:var(--mute);}
  .tag-pill{
    display:inline-flex;
    align-items:center;
    padding:3px 11px;
    border-radius:999px;
    background:rgba(0,179,154,.1);
    color:#00806e;
    font-size:12px;
    font-weight:700;
    letter-spacing:.02em;
  }
  .tag-pill.warm{background:rgba(255,122,69,.12);color:#d1541f;}
  .tag-pill.brand{background:rgba(91,61,245,.09);color:var(--brand);}
  /* ---------- CMS 列表卡 ---------- */
  .cms-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .cms-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    padding:24px 24px 26px;
    display:flex;
    flex-direction:column;
    gap:12px;
    box-shadow:var(--shadow-1);
    transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
    height:100%;
  }
  .cms-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(91,61,245,.35);}
  .cms-meta{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    font-size:13px;
    color:var(--mute);
  }
  .cms-card h3{
    font-size:19px;
    line-height:1.5;
    transition:color .3s var(--ease);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .cms-card:hover h3{color:var(--brand);}
  .cms-card .excerpt{
    font-size:14px;
    color:var(--sub);
    line-height:1.8;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
    flex:1;
  }
  .cms-more{
    font-size:13px;
    font-weight:700;
    color:var(--brand);
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
  .empty-state{
    grid-column:1/-1;
    background:#fff;
    border:1px dashed var(--line);
    border-radius:20px;
    padding:56px 24px;
    text-align:center;
    display:flex;
    flex-direction:column;
    align-items:center;
    gap:14px;
  }
  .empty-ico{
    width:52px;height:52px;border-radius:16px;
    background:rgba(91,61,245,.08);
    display:flex;align-items:center;justify-content:center;
    color:var(--brand);
  }
  /* ---------- 相关推荐 ---------- */
  .related-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
  }
  .related-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-sm);
    overflow:hidden;
    display:flex;
    flex-direction:column;
    transition:transform .3s var(--ease),border-color .3s var(--ease);
  }
  .related-card:hover{transform:translateY(-4px);border-color:rgba(91,61,245,.4);}
  .related-card .r-cover{aspect-ratio:4/3;overflow:hidden;}
  .related-card .r-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .related-card:hover .r-cover img{transform:scale(1.04);}
  .related-card .r-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;}
  .related-card h3{font-size:16px;line-height:1.5;transition:color .3s var(--ease);}
  .related-card:hover h3{color:var(--brand);}
  .related-card p{font-size:13px;color:var(--mute);}
  /* ---------- 口碑 ---------- */
  .voice-wrap{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .voice-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-lg);
    padding:28px;
    display:flex;
    flex-direction:column;
    gap:16px;
    box-shadow:var(--shadow-1);
  }
  .voice-quote{font-size:15px;color:var(--sub);line-height:1.85;}
  .voice-user{display:flex;align-items:center;gap:12px;}
  .voice-avatar{
    width:40px;height:40px;border-radius:50%;
    background:var(--grad);
    color:#fff;font-size:14px;font-weight:800;
    display:flex;align-items:center;justify-content:center;
  }
  .voice-name{font-size:14px;font-weight:700;}
  .voice-role{font-size:12px;color:var(--mute);}
  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid rgba(26,23,48,.08);}
  .faq-item{border-bottom:1px solid rgba(26,23,48,.08);}
  .faq-q{
    width:100%;
    background:none;
    border:0;
    padding:24px 4px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    text-align:left;
    font-size:17px;
    font-weight:700;
    cursor:pointer;
    color:var(--ink);
    transition:color .3s var(--ease);
  }
  .faq-q:hover{color:var(--brand);}
  .faq-sign{
    flex:0 0 auto;
    width:22px;height:22px;
    position:relative;
    transition:transform .22s var(--ease);
  }
  .faq-sign::before,.faq-sign::after{
    content:"";
    position:absolute;
    background:var(--brand);
    border-radius:2px;
  }
  .faq-sign::before{left:0;top:10px;width:22px;height:2px;}
  .faq-sign::after{left:10px;top:0;width:2px;height:22px;transition:opacity .22s var(--ease);}
  .faq-item.is-open .faq-sign::after{opacity:0;}
  .faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .22s var(--ease);
  }
  .faq-a p{
    font-size:15px;
    line-height:1.85;
    color:var(--sub);
    padding:0 4px 24px;
    max-width:78ch;
  }
  /* ---------- CTA 条 ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-lg);
    min-height:140px;
    background:var(--grad);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    padding:28px 40px;
    box-shadow:var(--shadow-2);
  }
  .cta-band .cta-bg{
    position:absolute;inset:0;
    background-size:cover;
    background-position:center;
    opacity:.16;
    mix-blend-mode:overlay;
  }
  .cta-copy{position:relative;z-index:2;color:#fff;display:flex;flex-direction:column;gap:8px;}
  .cta-copy h2{font-size:24px;}
  .cta-copy p{font-size:14px;color:rgba(255,255,255,.84);}
  .cta-actions{position:relative;z-index:2;display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:96px;
    background:var(--dark);
    color:#fff;
    padding:64px 0 0;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:48px;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand{
    display:flex;align-items:center;gap:10px;
    font-size:18px;font-weight:800;letter-spacing:.02em;
  }
  .footer-desc{font-size:14px;color:rgba(255,255,255,.62);line-height:1.85;margin-top:16px;max-width:34ch;}
  .footer-title{font-size:14px;font-weight:800;margin-bottom:16px;letter-spacing:.04em;}
  .footer-links li{margin-bottom:10px;}
  .footer-links a{
    font-size:14px;color:rgba(255,255,255,.66);
    transition:color .3s var(--ease);
  }
  .footer-links a:hover{color:#fff;}
  .footer-contact li{font-size:14px;color:rgba(255,255,255,.66);margin-bottom:10px;}
  .footer-bottom{
    padding:24px 0 32px;
    display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:13px;color:rgba(255,255,255,.5);
  }
  .to-top{
    width:44px;height:44px;border-radius:12px;
    border:1px solid rgba(255,255,255,.2);
    background:rgba(255,255,255,.06);
    color:#fff;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    transition:background .3s var(--ease),transform .3s var(--ease);
    opacity:0;visibility:hidden;
  }
  .to-top.is-show{opacity:1;visibility:visible;}
  .to-top:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .nav-links{display:none;}
    .burger{display:flex;}
    .section{padding-top:72px;}
    .hero-card{grid-template-columns:1fr;min-height:auto;}
    .hero-copy{padding:48px 40px;order:2;}
    .hero-visual{order:1;height:300px;}
    .hero-float-badge{left:20px;bottom:20px;}
    .stat-strip{grid-template-columns:repeat(2,1fr);}
    .catalog-grid{grid-template-columns:repeat(2,1fr);}
    .feature-grid{grid-template-columns:1fr;}
    .cms-grid{grid-template-columns:repeat(2,1fr);}
    .related-grid{grid-template-columns:repeat(2,1fr);}
    .voice-wrap{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .site-footer{margin-top:72px;}
  }
  @media (max-width:768px){
    .u-container{padding-left:20px;padding-right:20px;}
    .section{padding-top:48px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
    .hero-copy{padding:36px 24px 40px;}
    .hero-visual{height:240px;}
    .hero-float-badge{left:16px;bottom:16px;padding:12px 16px;min-width:150px;}
    .hero-float-badge .fb-num{font-size:22px;}
    .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;min-height:180px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .cms-grid{grid-template-columns:1fr;}
    .related-grid{grid-template-columns:1fr;}
    .mini-card{grid-template-columns:110px 1fr;}
    .site-footer{margin-top:48px;padding-top:48px;}
  }
  @media (max-width:520px){
    .stat-strip{grid-template-columns:1fr;}
    .catalog-grid{grid-template-columns:1fr;}
    .feature-body{padding:20px;}
    .feature-body h3{font-size:20px;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }

/* roulang page: article */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BE0;
  --brand-3:#C43C9E;
  --accent:#00B39A;
  --warm:#FF7A45;
  --bg:#F7F7FB;
  --surface:#FFFFFF;
  --dark:#131029;
  --text:#1A1730;
  --text-2:#5A5770;
  --text-3:#8B88A0;
  --line:#E8E6F2;
  --hair:rgba(26,23,48,.08);
  --grad:linear-gradient(135deg,#5B3DF5 0%,#8A3BE0 55%,#C43C9E 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 1px 2px rgba(26,23,48,.04),0 12px 32px -12px rgba(91,61,245,.18);
  --shadow-2:0 1px 2px rgba(26,23,48,.04),0 20px 48px -16px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.u-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,247,251,.94);
  border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--hair);box-shadow:0 6px 24px -18px rgba(26,23,48,.35)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;transition:height .3s var(--ease)}
.site-header.is-scrolled .nav-row{height:56px}
.brand-mark{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-dot{width:10px;height:10px;border-radius:999px;background:var(--grad);display:inline-block;flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);padding:6px 0;transition:color .3s var(--ease);white-space:nowrap}
.nav-link:hover{color:var(--text)}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:0;bottom:-2px;width:60%;height:2px;border-radius:2px;background:var(--brand)}
.nav-ghost{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:color .3s var(--ease)}
.nav-ghost:hover{color:var(--brand-3)}
.arrow-ico{width:12px;height:12px;transition:transform .3s var(--ease)}
.nav-ghost:hover .arrow-ico{transform:translate(2px,-2px)}
.burger{width:44px;height:44px;display:flex;align-items:center;justify-content:center;margin-left:auto;border-radius:12px;transition:background .3s var(--ease)}
.burger:hover{background:rgba(91,61,245,.08)}
.burger span{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--text);border-radius:2px}
.burger span::before{top:-6px}
.burger span::after{top:6px}
@media (min-width:1024px){.burger{display:none!important}}
@media (max-width:1023px){
  .nav-links{display:none!important}
  .nav-ghost{display:none}
}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:120;background:#fff;
  padding:16px 20px 28px;display:flex;flex-direction:column;
  transform:translateY(-12px);opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:52px}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px}
.drawer-close{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;border:1px solid var(--line);transition:background .3s var(--ease)}
.drawer-close:hover{background:rgba(91,61,245,.08)}
.drawer-nav{display:flex;flex-direction:column;margin-top:18px}
.drawer-nav a{padding:18px 4px;font-size:19px;font-weight:600;color:var(--text);border-bottom:1px solid var(--hair);transition:color .3s var(--ease)}
.drawer-nav a:hover{color:var(--brand)}
.drawer-cta{margin-top:auto;display:flex;align-items:center;justify-content:center;min-height:50px;border-radius:12px;background:var(--grad);color:#fff;font-weight:700;font-size:15px;box-shadow:var(--shadow-1)}
body.no-scroll{overflow:hidden}

/* ---------- article head ---------- */
.article-top{padding:32px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);line-height:1.6}
.breadcrumb a{color:var(--text-3);transition:color .3s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text);font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{padding:24px 0 30px;max-width:880px}
.cat-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;background:rgba(91,61,245,.08);color:var(--brand);font-size:13px;font-weight:600;border:1px solid rgba(91,61,245,.14)}
.cat-chip::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--accent)}
.article-title{margin:16px 0 0;font-size:clamp(27px,3.6vw,44px);line-height:1.25;font-weight:800;letter-spacing:-.01em;color:var(--text)}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--text-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block}

/* ---------- cover ---------- */
.article-cover{
  position:relative;margin:0;border-radius:20px;overflow:hidden;
  aspect-ratio:21/9;background:var(--grad);box-shadow:var(--shadow-1);
}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:44px 44px;opacity:.5;pointer-events:none;
}
.article-cover img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
@media (max-width:640px){
  .article-cover{aspect-ratio:16/10;border-radius:16px}
}

/* ---------- body ---------- */
.article-main{padding:24px 0 0}
.article-body-wrap{max-width:760px;margin:0 auto}
.article-body{font-size:17.5px;line-height:1.9;color:#2A2740}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  margin:2.2em 0 .8em;font-size:26px;line-height:1.42;font-weight:800;letter-spacing:-.01em;
  padding-left:14px;border-left:4px solid var(--brand);color:var(--text);
}
.article-body h3{margin:1.8em 0 .6em;font-size:20px;font-weight:700;color:var(--text)}
.article-body ul{margin:0 0 1.4em;padding-left:1.3em;list-style:disc}
.article-body ol{margin:0 0 1.4em;padding-left:1.4em;list-style:decimal}
.article-body li{margin:.45em 0;line-height:1.85}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:rgba(91,61,245,.06);border-radius:0 12px 12px 0;color:#3A3660;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;margin:1.6em auto;height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0;
  display:block;overflow-x:auto;border-radius:12px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{background:#F3F2FA;font-weight:600;color:var(--text)}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body strong{font-weight:700;color:var(--text)}

/* ---------- empty ---------- */
.article-empty{
  text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:56px 28px;box-shadow:var(--shadow-1);
}
.empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;display:grid;place-items:center;
  background:rgba(91,61,245,.08);color:var(--brand);
}
.empty-title{margin:0;font-size:22px;font-weight:800;color:var(--text)}
.empty-tip{margin:10px 0 26px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- tags ---------- */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;max-width:760px;margin:44px auto 0;padding-top:28px;
  border-top:1px solid var(--hair);
}
.tag{
  padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;
  font-size:13.5px;color:var(--text-2);transition:.3s var(--ease);
}
.tag:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}

/* ---------- action bar ---------- */
.action-bar{
  margin-top:52px;border-radius:var(--r-lg);background:var(--grad);color:#fff;
  padding:32px 36px;min-height:140px;display:flex;align-items:center;justify-content:space-between;
  gap:24px;position:relative;overflow:hidden;box-shadow:var(--shadow-1);
}
.action-bar::after{
  content:"";position:absolute;inset:0;opacity:.32;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.16) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.16) 1px,transparent 1px);
  background-size:40px 40px;
}
.action-bar > *{position:relative;z-index:1}
.bar-title{margin:0;font-size:22px;font-weight:800;letter-spacing:-.01em;line-height:1.4}
.bar-sub{margin:8px 0 0;font-size:14px;color:rgba(255,255,255,.84);line-height:1.7}
.bar-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn-light,.btn-outline-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;
  border-radius:12px;font-size:15px;font-weight:700;transition:.3s var(--ease);
}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 10px 26px -14px rgba(0,0,0,.45)}
.btn-light:hover{transform:translateY(-2px);color:var(--brand-3)}
.btn-outline-light{border:1px solid rgba(255,255,255,.55);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
@media (max-width:768px){
  .action-bar{flex-direction:column;align-items:flex-start;padding:28px 24px;min-height:180px}
  .bar-actions{width:100%}
  .bar-actions a{flex:1}
}

/* ---------- related ---------- */
.related-sec{padding:96px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-title{margin:0;font-size:28px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
.text-link{position:relative;display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand)}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--brand);transition:width .3s var(--ease)}
.text-link:hover::after{width:100%}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:.3s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(91,61,245,.3)}
.rel-cover{aspect-ratio:16/9;overflow:hidden;background:var(--grad)}
.rel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rel-card:hover .rel-cover img{transform:scale(1.03)}
.rel-body{padding:18px 20px 22px}
.rel-cat{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--accent)}
.rel-title{margin:8px 0 6px;font-size:17px;font-weight:700;line-height:1.5;color:var(--text);transition:color .3s var(--ease)}
.rel-card:hover .rel-title{color:var(--brand)}
.rel-desc{margin:0;font-size:13.5px;line-height:1.75;color:var(--text-3)}
@media (max-width:1023px){
  .related-sec{padding:72px 0 0}
  .related-grid{grid-template-columns:repeat(2,1fr);gap:20px}
}
@media (max-width:640px){
  .related-sec{padding:56px 0 0}
  .related-grid{grid-template-columns:1fr}
  .sec-title{font-size:23px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px}
}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;background:var(--dark);color:#fff;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.01em}
.footer-desc{margin:14px 0 0;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:330px}
.footer-title{font-size:14px;font-weight:700;letter-spacing:.04em;color:rgba(255,255,255,.92);margin-bottom:14px}
.footer-links li,.footer-contact li{font-size:14px;line-height:2;color:rgba(255,255,255,.66)}
.footer-links a{color:rgba(255,255,255,.66);transition:color .3s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  width:40px;height:40px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  display:grid;place-items:center;color:#fff;transition:.3s var(--ease);flex:0 0 auto;
}
.to-top:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
@media (max-width:1023px){
  .site-footer{margin-top:72px;padding-top:52px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  .site-footer{margin-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- responsive type ---------- */
@media (max-width:1023px){
  .article-top{padding-top:24px}
  .article-body-wrap{max-width:100%}
  .u-container{padding:0 24px}
}
@media (max-width:640px){
  .u-container{padding:0 20px}
  .article-body{font-size:16.5px;line-height:1.88}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .article-head{padding:18px 0 22px}
  .breadcrumb .current{max-width:220px}
}

/* roulang page: category1 */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BE0;
  --accent:#C43C9E;
  --teal:#00B39A;
  --warm:#FF7A45;
  --bg:#F7F7FB;
  --surface:#FFFFFF;
  --dark:#131029;
  --text:#1A1730;
  --text-2:#5A5770;
  --muted:#8B88A0;
  --border:#E8E6F2;
  --line:rgba(26,23,48,.08);
  --grad:linear-gradient(135deg,#5B3DF5 0%,#8A3BE0 55%,#C43C9E 100%);
  --grad-soft:linear-gradient(135deg,rgba(91,61,245,.09),rgba(196,60,158,.07));
  --r-xl:28px;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(26,23,48,.04),0 12px 32px -12px rgba(91,61,245,.18);
  --shadow-2:0 1px 2px rgba(26,23,48,.05),0 20px 48px -16px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap-block:96px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.01em;line-height:1.25}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(91,61,245,.16)}
.u-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.num{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 8px 24px -20px rgba(26,23,48,.35);
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:64px;transition:height .3s var(--ease);
}
.site-header.is-scrolled .nav-row{height:56px}
.brand-mark{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);
  white-space:nowrap;
}
.brand-dot{
  width:10px;height:10px;border-radius:999px;background:var(--grad);
  box-shadow:0 0 0 4px rgba(91,61,245,.12);flex:none;
}
.nav-links{display:none;align-items:center;gap:30px}
.nav-link{
  position:relative;padding:6px 0;font-size:14.5px;letter-spacing:.02em;
  color:var(--text-2);transition:color .3s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--grad);transition:width .3s var(--ease);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:var(--text);font-weight:700}
.nav-link.is-active::after{width:60%}
.nav-ghost{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;letter-spacing:.02em;color:var(--brand);
  transition:color .3s var(--ease),gap .3s var(--ease);
}
.nav-ghost:hover{gap:10px}
.arrow-ico{width:12px;height:12px;flex:none}
.burger{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:var(--r-btn);background:#fff;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.burger:hover{border-color:rgba(91,61,245,.4)}
.burger span{position:relative;width:18px;height:2px;border-radius:2px;background:var(--text);display:block}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform .3s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
@media (min-width:1024px){
  .nav-links{display:flex}
  .burger{display:none}
}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  transform:translateY(-102%);transition:transform .3s var(--ease);
  padding:92px 24px 32px;display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0)}
.drawer-close{
  position:absolute;top:16px;right:20px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);display:inline-flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  font-size:20px;font-weight:700;padding:18px 0;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-cta{margin-top:32px}

/* ============ 按钮 / 标签 ============ */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;min-height:46px;border-radius:var(--r-btn);
  background:var(--grad);background-size:160% 160%;background-position:0% 50%;
  color:#fff;font-size:15px;font-weight:700;
  box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background-position .3s var(--ease),filter .3s var(--ease);
}
.btn-primary:hover{
  transform:translateY(-2px);filter:brightness(1.05);
  background-position:100% 50%;box-shadow:var(--shadow-2);
}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;min-height:46px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--border);color:var(--text);
  font-size:15px;font-weight:600;
  transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease),color .3s var(--ease);
}
.btn-outline:hover{
  transform:translateY(-2px);border-color:rgba(91,61,245,.45);color:var(--brand);
  box-shadow:0 12px 28px -18px rgba(91,61,245,.5);
}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;min-height:46px;border-radius:var(--r-btn);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.38);color:#fff;
  font-size:15px;font-weight:600;
  transition:background .3s var(--ease),transform .3s var(--ease);
}
.btn-ghost-light:hover{background:rgba(255,255,255,.24);transform:translateY(-2px)}
.link-arrow{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;color:var(--brand);padding-bottom:4px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;
  background:var(--brand);transition:width .3s var(--ease);
}
.link-arrow:hover::after{width:100%}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;font-size:13px;line-height:1.5;
  background:rgba(91,61,245,.08);color:var(--brand);border:1px solid rgba(91,61,245,.14);
  white-space:nowrap;
}
.chip-teal{background:rgba(0,179,154,.10);color:#00806f;border-color:rgba(0,179,154,.18)}
.chip-warm{background:rgba(255,122,69,.10);color:#c14f1f;border-color:rgba(255,122,69,.20)}
.chip-plain{background:#fff;color:var(--text-2);border-color:var(--border)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:var(--brand);font-weight:700;
}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--grad)}

/* ============ 板块 ============ */
.section{padding-top:var(--gap-block);padding-bottom:0}
.section:last-of-type{padding-bottom:var(--gap-block)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:36px;
}
.section-title{font-size:clamp(23px,2.7vw,32px)}
.section-sub{margin-top:10px;font-size:15px;color:var(--text-2);max-width:680px}

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;margin-top:32px;border-radius:var(--r-xl);overflow:hidden;
  min-height:340px;display:flex;align-items:center;isolation:isolate;
  background:#1b1436;
}
.cat-hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(112deg,rgba(19,16,41,.94) 0%,rgba(91,61,245,.78) 46%,rgba(196,60,158,.62) 100%);
}
.cat-hero-inner{padding:56px 0;max-width:720px;color:#fff}
.cat-hero h1{
  font-size:clamp(28px,3.8vw,46px);color:#fff;margin-top:16px;
}
.cat-hero h1 span{
  background:linear-gradient(120deg,#8CF0DE,#FFD8C2);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero p{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.86)}
.cat-hero-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-badge{
  display:inline-flex;flex-direction:column;gap:2px;
  padding:12px 20px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.30);
}
.hero-badge b{font-size:23px;line-height:1.2;color:#fff}
.hero-badge span{font-size:12.5px;color:rgba(255,255,255,.78)}
.eyebrow-light{color:rgba(255,255,255,.82)}
.eyebrow-light::before{background:rgba(255,255,255,.7)}

/* ============ 数据徽章条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin-top:28px;
}
.stat-pill{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:14px 22px;box-shadow:0 1px 2px rgba(26,23,48,.03);
}
.stat-pill b{font-size:23px;font-weight:800;color:var(--teal);line-height:1.1}
.stat-pill i{display:block;width:1px;height:26px;background:var(--line);font-style:normal}
.stat-pill span{font-size:13px;color:var(--text-2);line-height:1.5}

/* ============ 条目网格（横向卡） ============ */
.game-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.game-card{
  display:flex;gap:16px;padding:18px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.game-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-2);border-color:rgba(91,61,245,.24);
}
.game-thumb{
  position:relative;flex:none;width:112px;height:112px;border-radius:var(--r-sm);
  overflow:hidden;background:var(--grad-soft);
}
.game-thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .3s var(--ease);
}
.game-card:hover .game-thumb img{transform:scale(1.05)}
.game-body{min-width:0;display:flex;flex-direction:column;flex:1}
.game-title{
  font-size:17px;font-weight:800;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .3s var(--ease);
}
.game-card:hover .game-title{color:var(--brand)}
.game-desc{
  margin-top:8px;font-size:13.5px;line-height:1.65;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.game-meta{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;gap:10px;
  font-size:12.5px;color:var(--muted);flex-wrap:wrap;
}
.game-meta .dot{width:3px;height:3px;border-radius:999px;background:var(--muted);opacity:.7}

/* ============ 说明图文区 ============ */
.explain-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start}
.explain-copy p+p{margin-top:18px}
.explain-copy p{font-size:16px;color:var(--text-2);line-height:1.9}
.explain-copy strong{color:var(--text)}
.explain-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.explain-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.explain-card-body{padding:22px 24px 26px}
.explain-card-body h3{font-size:19px}
.explain-card-body p{margin-top:10px;font-size:14px;color:var(--text-2);line-height:1.8}

.mini-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:24px}
.mini-stat{
  background:var(--grad-soft);border:1px solid rgba(91,61,245,.14);
  border-radius:var(--r-sm);padding:16px 18px;
}
.mini-stat b{display:block;font-size:22px;font-weight:800;color:var(--brand);line-height:1.2}
.mini-stat span{font-size:13px;color:var(--text-2)}

/* ============ 步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.step{
  position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:28px 24px;transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-1)}
.step-num{
  font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--accent);
}
.step h3{margin-top:12px;font-size:19px}
.step p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--text);
  transition:color .3s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-icon{
  position:relative;flex:none;width:20px;height:20px;
  transition:transform .22s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:1.6px}
.faq-icon::after{width:1.6px;height:14px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s var(--ease)}
.faq-a p{padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ============ CTA ============ */
.cta-bar{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--grad);padding:38px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  color:#fff;
}
.cta-bar::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px);
  background-size:40px 40px;opacity:.35;pointer-events:none;
}
.cta-bar-inner{position:relative;z-index:1}
.cta-bar h2{font-size:clamp(21px,2.4vw,27px);color:#fff}
.cta-bar p{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.86)}
.cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;background:var(--dark);color:#fff;padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;
}
.footer-desc{
  margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;
}
.footer-title{
  font-size:13px;letter-spacing:.12em;color:rgba(255,255,255,.55);font-weight:700;
}
.footer-links,.footer-contact{margin-top:16px}
.footer-links li,.footer-contact li{line-height:2;font-size:14px}
.footer-links a{color:rgba(255,255,255,.78);transition:color .3s var(--ease)}
.footer-links a:hover{color:#fff}
.footer-contact li{color:rgba(255,255,255,.66)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  width:40px;height:40px;border-radius:12px;
  border:1px solid rgba(255,255,255,.2);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .3s var(--ease),transform .3s var(--ease),border-color .3s var(--ease);
}
.to-top:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);border-color:rgba(255,255,255,.4)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  :root{--gap-block:72px;}
  .game-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .explain-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 28px}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .u-container{padding-left:20px;padding-right:20px}
  .game-grid{grid-template-columns:1fr}
  .game-thumb{width:88px;height:88px}
  .cat-hero-inner{padding:40px 0}
  .cat-hero{min-height:300px}
  .mini-stats{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:519px){
  :root{--gap-block:48px;}
  .stat-strip{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn-primary,.cta-actions .btn-ghost-light{flex:1}
  .faq-a p{padding-right:0}
}

/* roulang page: category2 */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BE0;
  --brand-3:#C43C9E;
  --accent:#00B39A;
  --warm:#FF7A45;
  --bg:#F7F7FB;
  --surface:#FFFFFF;
  --ink:#1A1730;
  --ink-2:#5A5770;
  --ink-3:#8B88A0;
  --line:#E8E6F2;
  --hair:rgba(26,23,48,.08);
  --dark:#131029;
  --grad:linear-gradient(135deg,#5B3DF5 0%,#8A3BE0 55%,#C43C9E 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(26,23,48,.04),0 12px 32px -12px rgba(91,61,245,.18);
  --shadow-2:0 20px 48px -16px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:96px;
}
@media (max-width:1024px){ :root{ --sec:72px; } }
@media (max-width:768px){ :root{ --sec:48px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-weight:800; letter-spacing:-.01em; line-height:1.3; }
p{ margin:0; }
:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; border-radius:4px; }

.u-container{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }
@media (max-width:768px){ .u-container{ padding:0 20px; } }

/* ============ 导航 ============ */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--hair);
  box-shadow:0 6px 24px -18px rgba(26,23,48,.35);
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  gap:24px; height:64px;
  transition:height .3s var(--ease);
}
.site-header.is-scrolled .nav-row{ height:56px; }
.brand-mark{
  display:inline-flex; align-items:center; gap:9px;
  font-size:17px; font-weight:800; letter-spacing:.01em; color:var(--ink);
  white-space:nowrap;
}
.brand-dot{
  width:10px; height:10px; border-radius:50%;
  background:var(--grad);
  flex:none;
}
.nav-links{ display:flex; align-items:center; gap:30px; }
.nav-link{
  position:relative; font-size:15px; letter-spacing:.02em;
  color:var(--ink-2); padding:6px 0;
  transition:color .3s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:""; position:absolute; left:50%; bottom:0;
  width:0; height:2px; border-radius:2px;
  background:var(--brand); transform:translateX(-50%);
  transition:width .3s var(--ease);
}
.nav-link:hover{ color:var(--ink); }
.nav-link:hover::after{ width:60%; }
.nav-link.is-active{ color:var(--ink); font-weight:700; }
.nav-link.is-active::after{ width:60%; }
.nav-ghost{
  display:inline-flex; align-items:center; gap:6px;
  font-size:14px; color:var(--ink-2);
  padding:8px 2px; position:relative;
  transition:color .3s var(--ease);
}
.nav-ghost::after{
  content:""; position:absolute; left:0; bottom:2px; height:1px; width:0;
  background:currentColor; transition:width .3s var(--ease);
}
.nav-ghost:hover{ color:var(--brand); }
.nav-ghost:hover::after{ width:100%; }
.arrow-ico{ width:12px; height:12px; flex:none; }
.nav-cta{
  display:inline-flex; align-items:center; gap:8px;
  height:40px; padding:0 18px; border-radius:var(--r-btn);
  background:var(--grad); color:#fff; font-size:14px; font-weight:600;
  box-shadow:0 8px 20px -10px rgba(91,61,245,.6);
  transition:transform .3s var(--ease), filter .3s var(--ease), box-shadow .3s var(--ease);
}
.nav-cta:hover{ filter:brightness(1.05); transform:translateY(-1px); box-shadow:var(--shadow-2); }

.burger{
  display:inline-flex; flex-direction:column; justify-content:center; gap:5px;
  width:44px; height:44px; border:none; background:transparent;
  align-items:center; border-radius:var(--r-btn);
}
.burger span{
  display:block; width:20px; height:2px; border-radius:2px;
  background:var(--ink); transition:transform .3s var(--ease);
}
@media (max-width:1023px){
  .nav-links{ display:none; }
}
@media (max-width:400px){
  .brand-mark{ font-size:15px; }
}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed; inset:0; z-index:80;
  background:#fff;
  display:flex; flex-direction:column;
  padding:20px 20px 32px;
  transform:translateY(-100%);
  opacity:0; visibility:hidden;
  transition:transform .35s var(--ease), opacity .35s var(--ease), visibility .35s;
}
.mobile-drawer.is-open{ transform:translateY(0); opacity:1; visibility:visible; }
.drawer-head{
  display:flex; align-items:center; justify-content:space-between;
  padding-bottom:16px; border-bottom:1px solid var(--hair);
}
.drawer-close{
  width:44px; height:44px; border:none; background:transparent;
  font-size:26px; line-height:1; color:var(--ink-2); border-radius:var(--r-btn);
}
.drawer-nav{ display:flex; flex-direction:column; margin-top:8px; }
.drawer-nav a{
  padding:18px 0; font-size:19px; font-weight:600; color:var(--ink);
  border-bottom:1px solid var(--hair);
  display:flex; align-items:center; justify-content:space-between;
  min-height:44px;
}
.drawer-nav a.is-active{ color:var(--brand); }
.drawer-cta{
  margin-top:auto; display:flex; align-items:center; justify-content:center;
  height:52px; border-radius:var(--r-btn);
  background:var(--grad); color:#fff; font-size:16px; font-weight:600;
}

/* ============ 通用组件 ============ */
.section{ padding:var(--sec) 0; }
.section-soft{ background:#fff; border-top:1px solid var(--hair); border-bottom:1px solid var(--hair); }
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between;
  gap:24px; margin-bottom:44px;
}
.eyebrow{
  display:inline-block; font-size:13px; font-weight:700; letter-spacing:.12em;
  color:var(--brand); margin-bottom:10px;
}
.section-head h2{ font-size:clamp(24px,2.6vw,32px); }
.section-head p{ margin-top:12px; color:var(--ink-2); font-size:15px; max-width:640px; }
.text-link{
  display:inline-flex; align-items:center; gap:7px;
  font-size:15px; font-weight:600; color:var(--brand);
  position:relative; padding-bottom:3px; white-space:nowrap;
}
.text-link::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:0;
  background:currentColor; transition:width .3s var(--ease);
}
.text-link:hover::after{ width:100%; }
.btn-primary{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:50px; padding:0 26px; border:none; border-radius:var(--r-btn);
  background:var(--grad); color:#fff; font-size:15.5px; font-weight:700;
  box-shadow:0 10px 26px -14px rgba(91,61,245,.75);
  transition:transform .3s var(--ease), filter .3s var(--ease), box-shadow .3s var(--ease);
}
.btn-primary:hover{ filter:brightness(1.05); transform:translateY(-2px); box-shadow:var(--shadow-2); }
.btn-primary:active{ transform:translateY(0); }
.btn-outline{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:50px; padding:0 26px; border-radius:var(--r-btn);
  background:#fff; color:var(--ink); font-size:15.5px; font-weight:700;
  border:1px solid var(--line);
  transition:border-color .3s var(--ease), color .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}
.btn-outline:hover{ border-color:var(--brand); color:var(--brand); transform:translateY(-2px); box-shadow:var(--shadow-1); }

/* ============ 分类 Hero ============ */
.cat-hero{
  position:relative;
  display:flex; align-items:center;
  min-height:340px;
  padding:64px 0;
  color:#fff;
  background-color:var(--brand);
  background-image:
    linear-gradient(115deg, rgba(91,61,245,.95) 0%, rgba(138,59,224,.88) 48%, rgba(196,60,158,.74) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size:56px 56px;
}
.cat-hero .u-container{ position:relative; z-index:2; }
.breadcrumb{
  display:flex; align-items:center; gap:8px;
  font-size:13px; color:rgba(255,255,255,.72); margin-bottom:20px;
}
.breadcrumb a{ color:rgba(255,255,255,.82); transition:color .3s var(--ease); }
.breadcrumb a:hover{ color:#fff; }
.breadcrumb .sep{ opacity:.55; }
.breadcrumb .current{ color:#fff; font-weight:700; }
.cat-hero h1{
  font-size:clamp(30px,4.2vw,50px);
  max-width:820px;
  letter-spacing:-.02em;
}
.hero-lead{
  margin-top:18px; max-width:680px;
  font-size:16.5px; line-height:1.85;
  color:rgba(255,255,255,.9);
}
.hero-meta{
  display:flex; flex-wrap:wrap; align-items:center; gap:14px;
  margin-top:28px;
}
.hero-pill{
  display:inline-flex; align-items:center; gap:8px;
  height:34px; padding:0 16px; border-radius:999px;
  font-size:13px; font-weight:600;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;
}
.hero-badge{
  display:inline-flex; align-items:center; gap:12px;
  padding:10px 18px 10px 16px; border-radius:999px;
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
}
.hero-badge-num{
  font-size:23px; font-weight:800; line-height:1;
  font-variant-numeric:tabular-nums; color:#fff;
}
.hero-badge-txt{ font-size:13px; color:rgba(255,255,255,.85); }
@media (max-width:768px){
  .cat-hero{ min-height:auto; padding:44px 0 48px; }
  .hero-lead{ font-size:15.5px; }
}

/* ============ 徽章数据条 ============ */
.stat-strip{
  background:#fff;
  border-bottom:1px solid var(--hair);
}
.stat-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px;
  padding:28px 0;
}
.stat-item{
  display:flex; align-items:center; gap:14px;
  padding:14px 18px; border-radius:999px;
  background:rgba(91,61,245,.06);
  border:1px solid rgba(91,61,245,.12);
}
.stat-num{
  font-size:23px; font-weight:800; line-height:1;
  color:var(--accent); font-variant-numeric:tabular-nums;
  flex:none;
}
.stat-txt{ font-size:13px; color:var(--ink-2); line-height:1.5; }
@media (max-width:1024px){ .stat-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:520px){ .stat-grid{ grid-template-columns:1fr; gap:12px; } }

/* ============ 时间轴 ============ */
.timeline{ position:relative; }
.tl-item{
  display:grid; grid-template-columns:104px 1fr; gap:36px;
  padding:36px 0;
  border-top:1px solid var(--hair);
  transition:background .3s var(--ease);
}
.tl-item:last-child{ border-bottom:1px solid var(--hair); }
.tl-item:hover{ background:rgba(91,61,245,.02); }
.tl-index{
  font-size:36px; font-weight:800; line-height:1.1;
  letter-spacing:-.03em; font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text; background-clip:text;
  color:transparent;
}
.tl-body h3{
  font-size:21px; margin-bottom:12px;
  transition:color .3s var(--ease);
}
.tl-item:hover .tl-body h3{ color:var(--brand); }
.tl-body p{ color:var(--ink-2); font-size:16px; max-width:760px; }
.tl-points{
  margin-top:16px; display:grid; gap:9px;
}
.tl-points li{
  position:relative; padding-left:20px;
  font-size:14.5px; color:var(--ink-2);
}
.tl-points li::before{
  content:""; position:absolute; left:0; top:.62em;
  width:8px; height:2px; border-radius:2px;
  background:var(--accent);
}
.tl-body .text-link{ margin-top:18px; font-size:14px; }
@media (max-width:768px){
  .tl-item{ grid-template-columns:1fr; gap:12px; padding:28px 0; }
  .tl-index{ font-size:28px; }
  .tl-body h3{ font-size:19px; }
}

/* ============ 图文双列 ============ */
.split-block{
  display:grid; grid-template-columns:5fr 6fr; gap:56px; align-items:center;
}
.split-media{
  margin:0; border-radius:var(--r-lg); overflow:hidden;
  box-shadow:var(--shadow-1);
  position:relative;
}
.split-media img{
  width:100%; height:100%; min-height:340px; object-fit:cover;
  transition:transform .5s var(--ease);
}
.split-media:hover img{ transform:scale(1.03); }
.split-media figcaption{
  position:absolute; left:0; right:0; bottom:0;
  padding:14px 18px; font-size:12.5px; color:#fff;
  background:linear-gradient(0deg, rgba(19,16,41,.72), rgba(19,16,41,0));
}
.split-text h2{ font-size:clamp(24px,2.6vw,30px); margin-bottom:16px; }
.split-text p{ color:var(--ink-2); font-size:16px; }
.check-list{ margin-top:24px; display:grid; gap:14px; }
.check-list li{
  display:grid; grid-template-columns:auto 1fr; gap:14px; align-items:flex-start;
  padding-bottom:14px; border-bottom:1px dashed var(--hair);
}
.check-list li:last-child{ border-bottom:none; padding-bottom:0; }
.check-num{
  width:28px; height:28px; flex:none; border-radius:9px;
  display:inline-flex; align-items:center; justify-content:center;
  font-size:13px; font-weight:800; color:#fff;
  background:var(--grad);
  font-variant-numeric:tabular-nums;
  margin-top:2px;
}
.check-list strong{ display:block; font-size:15.5px; margin-bottom:3px; }
.check-list span{ font-size:14px; color:var(--ink-2); }
@media (max-width:1024px){
  .split-block{ grid-template-columns:1fr; gap:36px; }
  .split-media img{ min-height:260px; }
}

/* ============ 细线要点列表 ============ */
.plain-list{
  border-top:1px solid var(--hair);
}
.plain-item{
  display:grid; grid-template-columns:1.1fr 1.6fr; gap:32px;
  padding:26px 0; border-bottom:1px solid var(--hair);
  transition:padding-left .3s var(--ease);
}
.plain-item:hover{ padding-left:8px; }
.plain-item h3{
  font-size:18px; display:flex; align-items:baseline; gap:10px;
}
.plain-item h3 em{
  font-style:normal; font-size:13px; font-weight:700; color:var(--warm);
  letter-spacing:.08em;
}
.plain-item p{ font-size:15px; color:var(--ink-2); }
@media (max-width:768px){
  .plain-item{ grid-template-columns:1fr; gap:10px; }
}

/* ============ FAQ ============ */
.faq-list{ border-top:1px solid var(--hair); }
.faq-item{ border-bottom:1px solid var(--hair); }
.faq-q{
  width:100%; background:transparent; border:none;
  display:flex; align-items:center; justify-content:space-between; gap:20px;
  padding:22px 0; text-align:left;
  font-size:17px; font-weight:700; color:var(--ink);
  min-height:44px;
  transition:color .3s var(--ease);
}
.faq-q:hover{ color:var(--brand); }
.faq-icon{
  position:relative; width:18px; height:18px; flex:none;
  transition:transform .22s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:""; position:absolute; background:var(--brand); border-radius:2px;
  transition:opacity .22s var(--ease);
}
.faq-icon::before{ left:0; top:8px; width:18px; height:2px; }
.faq-icon::after{ left:8px; top:0; width:2px; height:18px; }
.faq-item.is-open .faq-icon{ transform:rotate(180deg); }
.faq-item.is-open .faq-icon::after{ opacity:0; }
.faq-a{
  max-height:0; overflow:hidden;
  transition:max-height .22s var(--ease);
}
.faq-a p{
  padding:0 40px 24px 0;
  font-size:15px; line-height:1.85; color:var(--ink-2);
}
.faq-item.is-open .faq-q{ color:var(--brand); }

/* ============ CTA 条 ============ */
.cta-bar{
  background:var(--grad);
  color:#fff;
  border-radius:0;
  position:relative;
  overflow:hidden;
}
.cta-bar::after{
  content:"";
  position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
  background-size:52px 52px;
}
.cta-inner{
  position:relative; z-index:2;
  min-height:140px; display:flex; align-items:center; justify-content:space-between;
  gap:28px; padding:28px 0;
}
.cta-inner h2{ font-size:clamp(21px,2.2vw,26px); }
.cta-inner p{ margin-top:6px; font-size:14.5px; color:rgba(255,255,255,.86); }
.cta-actions{ display:flex; gap:14px; flex:none; }
.cta-bar .btn-primary{ background:#fff; color:var(--brand); box-shadow:0 12px 28px -16px rgba(0,0,0,.6); }
.cta-bar .btn-primary:hover{ filter:none; color:var(--brand-2); }
.cta-bar .btn-outline{ background:transparent; color:#fff; border-color:rgba(255,255,255,.5); }
.cta-bar .btn-outline:hover{ border-color:#fff; color:#fff; box-shadow:none; }
@media (max-width:768px){
  .cta-inner{ flex-direction:column; align-items:flex-start; justify-content:center; min-height:180px; gap:20px; }
  .cta-actions{ width:100%; flex-direction:column; }
  .cta-actions .btn-primary,
  .cta-actions .btn-outline{ width:100%; }
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark); color:#fff;
}
.footer-grid{
  display:grid; grid-template-columns:1.6fr 1fr 1fr 1.2fr; gap:48px;
  padding:64px 0 40px;
}
.footer-brand{
  display:flex; align-items:center; gap:9px;
  font-size:18px; font-weight:800; letter-spacing:.01em;
  margin-bottom:14px;
}
.footer-desc{
  font-size:14px; line-height:1.85; color:rgba(255,255,255,.62); max-width:300px;
}
.footer-title{
  font-size:14px; font-weight:700; margin-bottom:16px; color:#fff;
  letter-spacing:.04em;
}
.footer-links li,
.footer-contact li{
  font-size:14px; line-height:2; color:rgba(255,255,255,.62);
}
.footer-links a{
  color:rgba(255,255,255,.62);
  transition:color .3s var(--ease), padding-left .3s var(--ease);
}
.footer-links a:hover{ color:#fff; padding-left:4px; }
.footer-contact li{ line-height:2; }
.footer-bottom{
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:20px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px; color:rgba(255,255,255,.55);
}
.to-top{
  width:38px; height:38px; border-radius:50%;
  display:inline-flex; align-items:center; justify-content:center;
  background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.16);
  color:#fff; flex:none;
  transition:background .3s var(--ease), transform .3s var(--ease);
}
.to-top:hover{ background:rgba(255,255,255,.18); transform:translateY(-2px); }
@media (max-width:1024px){
  .footer-grid{ grid-template-columns:1fr 1fr; gap:36px; padding:52px 0 32px; }
}
@media (max-width:640px){
  .footer-grid{ grid-template-columns:1fr; gap:28px; padding:44px 0 28px; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}

/* roulang page: category3 */
:root{
  --brand:#5B3DF5;
  --brand-2:#8A3BE0;
  --brand-3:#C43C9E;
  --teal:#00B39A;
  --accent:#FF7A45;
  --bg:#F7F7FB;
  --surface:#FFFFFF;
  --dark:#131029;
  --text:#1A1730;
  --text-2:#5A5770;
  --text-3:#8B88A0;
  --border:#E8E6F2;
  --divider:rgba(26,23,48,.08);
  --grad:linear-gradient(135deg,#5B3DF5 0%,#8A3BE0 55%,#C43C9E 100%);
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 1px 2px rgba(26,23,48,.04), 0 12px 32px -12px rgba(91,61,245,.18);
  --shadow-2:0 2px 4px rgba(26,23,48,.05), 0 20px 48px -16px rgba(91,61,245,.28);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.28}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.num{font-variant-numeric:tabular-nums}

.u-container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.u-container{padding:0 24px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--border)}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:28px;height:64px;transition:height .3s var(--ease)}
.site-header.is-scrolled .nav-row{height:56px}
.brand-mark{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--text);white-space:nowrap}
.brand-dot{width:10px;height:10px;border-radius:999px;background:var(--grad);display:inline-block;flex:none}
.nav-links{display:none}
@media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:26px}}
.nav-link{position:relative;font-size:14.5px;letter-spacing:.02em;color:var(--text-2);padding:6px 0;transition:color .3s var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);border-radius:2px;transition:width .3s var(--ease)}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:60%}
.nav-link.is-active{color:var(--text);font-weight:600}
.nav-link.is-active::after{width:60%}
.nav-ghost{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);padding:8px 2px;transition:opacity .3s var(--ease)}
.nav-ghost:hover{opacity:.78}
.arrow-ico{width:12px;height:12px;flex:none;transition:transform .3s var(--ease)}
.nav-ghost:hover .arrow-ico{transform:translate(2px,-2px)}
.burger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;align-items:center;border-radius:12px;transition:background .3s var(--ease)}
.burger:hover{background:rgba(91,61,245,.07)}
.burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--text);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;border-radius:2px;background:var(--text)}
.burger span::before{top:-6px}
.burger span::after{top:6px}
@media (min-width:1024px){.burger{display:none !important}}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  transform:translateX(102%);transition:transform .34s var(--ease);
  display:flex;flex-direction:column;padding:20px 20px 28px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px}
.drawer-brand{display:inline-flex;align-items:center;gap:9px;font-size:16px;font-weight:800}
.drawer-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;font-size:22px;color:var(--text-2);transition:background .3s var(--ease)}
.drawer-close:hover{background:rgba(91,61,245,.07)}
.drawer-nav a{display:block;font-size:21px;font-weight:700;padding:19px 2px;border-bottom:1px solid var(--divider)}
.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:28px}
.drawer-note{font-size:13px;color:var(--text-3);margin-bottom:16px}

/* ---------- 按钮 ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--r-sm);font-size:15px;font-weight:600;color:#fff;
  background-image:var(--grad);background-size:170% 170%;background-position:0% 50%;
  box-shadow:0 1px 2px rgba(26,23,48,.06),0 12px 28px -12px rgba(91,61,245,.5);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),filter .3s var(--ease),background-position .3s var(--ease);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);background-position:100% 50%;box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 24px;border-radius:var(--r-sm);font-size:15px;font-weight:600;
  border:1px solid rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.08);
  transition:background .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.btn-outline:hover{background:rgba(255,255,255,.18);border-color:#fff;transform:translateY(-2px)}
.btn-solid-light{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--r-sm);font-size:15px;font-weight:700;color:var(--brand);
  background:#fff;box-shadow:0 10px 24px -12px rgba(19,16,41,.5);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-solid-light:hover{transform:translateY(-2px);box-shadow:0 18px 36px -14px rgba(19,16,41,.55)}
.text-link{position:relative;display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;color:var(--brand)}
.text-link::after{content:"";position:absolute;left:0;bottom:-4px;height:1px;width:0;background:currentColor;transition:width .3s var(--ease)}
.text-link:hover::after{width:100%}

/* ---------- 品牌 Hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  background-image:linear-gradient(118deg,rgba(19,16,41,.92) 0%,rgba(91,61,245,.86) 48%,rgba(196,60,158,.74) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
  padding:52px 0 66px;
}
@media (min-width:768px){.cat-hero{padding:60px 0 78px;min-height:340px;display:flex;align-items:center}}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:44px 44px;opacity:.7;
}
.hero-inner{position:relative;z-index:1;max-width:760px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.14em;padding:7px 14px;border-radius:999px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.14)}
.cat-hero h1{margin-top:18px;font-size:clamp(28px,4vw,46px);font-weight:800;letter-spacing:-.015em}
.hero-lead{margin-top:16px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.88);max-width:640px}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;margin-top:24px;
  padding:11px 18px;border-radius:999px;font-size:13.5px;
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.14);
}
.hero-badge b{font-size:20px;font-weight:800;letter-spacing:-.01em}
.hero-badge .dot-teal{width:7px;height:7px;border-radius:999px;background:#5FF0D8;flex:none}

/* ---------- 数据徽章条 ---------- */
.stat-strip-wrap{position:relative;z-index:2;margin-top:-40px}
.stat-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media (min-width:768px){.stat-strip{grid-template-columns:repeat(4,1fr);gap:16px}}
.stat-pill{
  background:var(--surface);border:1px solid var(--border);border-radius:999px;
  padding:12px 18px;display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow-1);
}
.stat-pill .val{font-size:22px;font-weight:800;color:var(--teal);line-height:1.1;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.stat-pill .lab{font-size:13px;color:var(--text-2);line-height:1.4}

/* ---------- 区块通用 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:34px}
.section-title{font-size:clamp(23px,2.6vw,32px);font-weight:800}
.section-sub{margin-top:10px;font-size:15px;color:var(--text-2);max-width:660px}
.tag{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.02em;background:rgba(91,61,245,.08);color:var(--brand)}
.tag.tag-warm{background:rgba(255,122,69,.12);color:#D9521F}
.tag.tag-teal{background:rgba(0,179,154,.12);color:#00806F}

/* ---------- 双列图文 ---------- */
.duo{border-top:1px solid var(--divider);padding:38px 0;display:grid;gap:26px;align-items:center}
@media (min-width:900px){
  .duo{grid-template-columns:1fr 1fr;gap:56px;padding:44px 0}
  .duo.is-flip .duo-media{order:2}
}
.duo-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow-1)}
.duo-body h3{margin-top:14px;font-size:clamp(20px,2.2vw,24px);font-weight:800}
.duo-body > p{margin-top:14px;font-size:15.5px;color:var(--text-2);line-height:1.85}
.check-list{margin-top:18px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text-2);line-height:1.8;margin:9px 0}
.check-list li::before{
  content:"✓";position:absolute;left:0;top:0;color:var(--teal);font-weight:700;font-size:14px;
}
.duo-body .text-link{margin-top:20px}

/* ---------- 对比表格 ---------- */
.cmp-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow-1);-webkit-overflow-scrolling:touch}
table.cmp{width:100%;min-width:760px;border-collapse:collapse}
.cmp th,.cmp td{padding:16px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--divider);vertical-align:top}
.cmp thead th{background:#F2F0FD;font-size:13.5px;font-weight:700;letter-spacing:.03em;color:#3D3670;white-space:nowrap}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp tbody tr{transition:background .3s var(--ease)}
.cmp tbody tr:hover{background:#FAF9FF}
.cmp td:first-child{font-weight:700;color:var(--text);white-space:nowrap}
.cmp td{color:var(--text-2)}
.cmp .lvl{display:inline-flex;align-items:center;padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:700;background:rgba(0,179,154,.12);color:#00806F}
.cmp .lvl.mid{background:rgba(91,61,245,.1);color:var(--brand)}

/* ---------- 步骤 ---------- */
.steps{display:grid;gap:16px}
@media (min-width:640px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.steps{grid-template-columns:repeat(4,1fr)}}
.step-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-md);padding:24px 22px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(91,61,245,.24)}
.step-no{font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--brand)}
.step-card h3{margin-top:12px;font-size:18px;font-weight:700}
.step-card p{margin-top:10px;font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--divider)}
.faq-item{border-bottom:1px solid var(--divider)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:22px;text-align:left;padding:22px 2px;font-size:17px;font-weight:600;color:var(--text);transition:color .3s var(--ease)}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 46px 22px 2px;font-size:15px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  background-image:var(--grad);
  border-radius:var(--r-xl);
  color:#fff;overflow:hidden;position:relative;
  box-shadow:0 24px 56px -24px rgba(91,61,245,.6);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 82% 18%,rgba(255,255,255,.24),transparent 55%);
}
.cta-inner{position:relative;z-index:1;display:flex;flex-direction:column;gap:24px;padding:34px 26px}
@media (min-width:900px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;min-height:140px;padding:32px 40px}}
.cta-inner h2{font-size:clamp(21px,2.4vw,26px);font-weight:800}
.cta-inner p{margin-top:8px;font-size:14.5px;color:rgba(255,255,255,.86)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#fff;margin-top:72px;padding:64px 0 0}
@media (min-width:1024px){.site-footer{padding-top:76px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:40px}}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:800}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.footer-title{font-size:13.5px;font-weight:700;letter-spacing:.06em;color:#fff;margin-bottom:16px}
.footer-links li{margin:9px 0}
.footer-links a{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66)}
.footer-links a:hover{color:#fff}
.footer-contact li{font-size:14px;line-height:2;color:rgba(255,255,255,.66)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.5)}
.to-top{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;
  border:1px solid rgba(255,255,255,.24);color:rgba(255,255,255,.8);
  transition:background .3s var(--ease),color .3s var(--ease),transform .3s var(--ease);
}
.to-top:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}