/* roulang page: index */
:root{
    --brand:#1157C4; --brand-dark:#0B3C8C; --brand-light:#EAF1FE;
    --sprint:#FF6A2B; --sprint-dark:#E85A1C; --data:#12BFA6;
    --bg:#F7F8FA; --bg-alt:#F7F9FC; --white:#FFFFFF;
    --ink:#0F1B2D; --ink-2:#5A6B80; --ink-3:#8A99AB; --line:#E7ECF3; --danger:#E5484D;
    --r-card:16px; --r-media:20px; --r-btn:10px;
    --sh-1:0 4px 18px rgba(16,42,86,.06),0 1px 2px rgba(16,42,86,.04);
    --sh-2:0 12px 32px rgba(16,42,86,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0; background:var(--bg); color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,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:inherit; color:inherit; background:none; border:0; cursor:pointer;}
  input{font:inherit;}
  h1,h2,h3,h4{margin:0; line-height:1.32; font-weight:700; letter-spacing:-.2px;}
  p{margin:0;}
  ul{margin:0; padding:0; list-style:none;}
  :focus-visible{outline:2px solid var(--brand); outline-offset:2px; border-radius:6px;}
  .num{font-variant-numeric:tabular-nums; font-feature-settings:"tnum";}
  .container{width:100%; max-width:1200px; margin:0 auto; padding-left:20px; padding-right:20px;}
  @media (min-width:768px){ .container{padding-left:24px; padding-right:24px;} }
  .section{padding-top:56px; padding-bottom:56px;}
  @media (min-width:768px){ .section{padding-top:72px; padding-bottom:72px;} }
  @media (min-width:1024px){ .section{padding-top:96px; padding-bottom:96px;} }
  .section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:28px;}
  .section-title{font-size:22px; font-weight:700; color:var(--ink);}
  @media (min-width:768px){ .section-title{font-size:30px;} }
  .more-link{font-size:14px; font-weight:600; color:var(--brand); display:inline-flex; align-items:center; gap:6px; transition:transform .2s var(--ease);}
  .more-link:hover{transform:translateX(4px);}

  /* 导航 */
  .site-header{
    position:fixed; top:0; left:0; right:0; z-index:50;
    background:rgba(255,255,255,.72);
    -webkit-backdrop-filter:blur(14px) saturate(160%);
    backdrop-filter:blur(14px) saturate(160%);
    border-bottom:1px solid rgba(15,27,45,.08);
    box-shadow:0 4px 18px rgba(16,42,86,.06);
    transition:background .24s var(--ease), box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{background:rgba(255,255,255,.95); box-shadow:0 8px 26px rgba(16,42,86,.10);}
  .nav-inner{height:72px; display:flex; align-items:center; justify-content:space-between; gap:16px; transition:height .24s var(--ease);}
  .site-header.is-scrolled .nav-inner{height:64px;}
  .logo{display:inline-flex; align-items:center; gap:10px;}
  .logo-mark{width:36px; height:36px; border-radius:11px; background:linear-gradient(135deg,#1157C4,#0B3C8C); display:grid; place-items:center; box-shadow:0 6px 16px rgba(17,87,196,.28);}
  .logo-text{font-size:17px; font-weight:700; color:var(--ink); letter-spacing:-.3px; white-space:nowrap;}
  .nav-link{display:inline-flex; align-items:center; height:36px; padding:0 14px; border-radius:999px; font-size:14.5px; font-weight:500; color:var(--ink-2); transition:color .2s var(--ease), background-color .2s var(--ease);}
  .nav-link:hover{color:var(--brand); background:var(--brand-light);}
  .nav-link--active{color:var(--brand); background:var(--brand-light); font-weight:600;}
  .icon-btn{width:40px; height:40px; border-radius:999px; border:1px solid var(--line); background:#fff; display:grid; place-items:center; color:var(--ink-2); transition:all .2s var(--ease);}
  .icon-btn:hover{color:var(--brand); border-color:#C8D8F5; box-shadow:var(--sh-1);}
  .btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; border-radius:999px; font-weight:600; transition:transform .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);}
  .btn-primary{background:var(--sprint); color:#fff; height:40px; padding:0 20px; font-size:14.5px; box-shadow:0 6px 16px rgba(255,106,43,.28);}
  .btn-primary:hover{background:var(--sprint-dark); transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-primary[disabled]{opacity:.45; pointer-events:none;}
  .btn-lg{height:48px; padding:0 26px; font-size:15.5px;}
  .btn-outline{border:1.5px solid var(--brand); color:var(--brand); background:#fff; height:40px; padding:0 20px; font-size:14.5px;}
  .btn-outline:hover{background:var(--brand-light); transform:translateY(-2px);}
  .btn-lg.btn-outline{height:48px; padding:0 24px; font-size:15.5px;}
  .btn-ghost{color:var(--brand); font-weight:600; font-size:14.5px; display:inline-flex; align-items:center; gap:6px; transition:transform .2s var(--ease);}
  .btn-ghost:hover{transform:translateX(4px);}

  /* 抽屉 */
  .overlay{position:fixed; inset:0; background:rgba(15,27,45,.45); opacity:0; pointer-events:none; transition:opacity .24s var(--ease); z-index:60;}
  .overlay.is-open{opacity:1; pointer-events:auto;}
  .drawer{
    position:fixed; top:0; right:0; height:100%; width:82vw; max-width:360px; z-index:70;
    background:rgba(255,255,255,.92);
    -webkit-backdrop-filter:blur(18px) saturate(160%); backdrop-filter:blur(18px) saturate(160%);
    border-left:1px solid var(--line); box-shadow:-10px 0 40px rgba(16,42,86,.14);
    transform:translateX(100%); transition:transform .28s var(--ease);
    display:flex; flex-direction:column; padding:20px;
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-link{display:flex; align-items:center; justify-content:space-between; padding:14px 12px; border-radius:12px; font-size:15px; font-weight:600; color:var(--ink); transition:background-color .2s var(--ease), color .2s var(--ease);}
  .drawer-link:hover{background:var(--brand-light); color:var(--brand);}

  /* 徽章 */
  .badge{display:inline-flex; align-items:center; height:26px; padding:0 12px; border-radius:999px; background:var(--brand-light); color:var(--brand); font-size:13px; font-weight:600;}
  .badge-live{display:inline-flex; align-items:center; gap:6px; height:26px; padding:0 11px; border-radius:999px; background:rgba(15,27,45,.62); color:#fff; font-size:11px; font-weight:600; -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);}
  .badge-live i{width:6px; height:6px; border-radius:999px; background:var(--data); display:block;}
  .tag{display:inline-flex; align-items:center; height:24px; padding:0 10px; border-radius:999px; background:rgba(234,241,254,.92); color:var(--brand); font-size:11.5px; font-weight:600;}
  .tag-plain{background:rgba(255,255,255,.82); color:var(--ink-2);}
  .time-chip{position:absolute; top:10px; left:10px; height:22px; padding:0 8px; border-radius:6px; background:rgba(0,0,0,.55); color:#fff; font-size:11px; display:inline-flex; align-items:center;}

  /* Hero */
  .hero{padding-top:112px; padding-bottom:48px;}
  @media (min-width:768px){ .hero{padding-top:128px; padding-bottom:64px;} }
  @media (min-width:1024px){ .hero{padding-top:136px; padding-bottom:80px;} }
  .hero h1{font-size:32px; line-height:1.24;}
  @media (min-width:768px){ .hero h1{font-size:44px;} }
  @media (min-width:1280px){ .hero h1{font-size:50px;} }
  .hero-sub{font-size:16px; color:var(--ink-2); max-width:520px;}
  .stat-num{font-size:26px; font-weight:700; color:var(--ink); line-height:1.2;}
  @media (min-width:768px){ .stat-num{font-size:30px;} }
  .stat-label{font-size:12px; color:var(--ink-3); margin-top:2px;}
  .phone-card{position:relative; border-radius:var(--r-media); overflow:hidden; box-shadow:var(--sh-2); aspect-ratio:9/16; background:#0F1B2D;}
  .play-btn{
    position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
    width:64px; height:64px; border-radius:999px; display:grid; place-items:center;
    background:rgba(255,255,255,.28); border:1.5px solid rgba(255,106,43,.9); color:#fff;
    -webkit-backdrop-filter:blur(4px); backdrop-filter:blur(4px);
    transition:transform .22s var(--ease), background-color .22s var(--ease);
  }
  .play-btn:hover{transform:translate(-50%,-50%) scale(1.06); background:rgba(255,106,43,.85);}
  .float-card{position:absolute; right:-10px; bottom:-24px; width:180px; background:#fff; border:1px solid var(--line); border-radius:14px; box-shadow:var(--sh-2); padding:12px 14px;}
  @media (min-width:768px){ .float-card{right:-28px;} }

  /* 卡片 */
  .card{background:#fff; border:1px solid var(--line); border-radius:var(--r-card); box-shadow:var(--sh-1);}
  .clip-card{position:relative; width:280px; border-radius:16px; overflow:hidden; background:#0F1B2D; aspect-ratio:9/16; transition:transform .22s var(--ease), box-shadow .22s var(--ease);}
  .clip-card:hover{transform:translateY(-4px); box-shadow:var(--sh-2);}
  .clip-card img{width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease);}
  .clip-card:hover img{transform:scale(1.03);}
  @media (max-width:1023px){ .clip-card{width:200px;} }
  @media (max-width:639px){ .clip-card{width:68vw;} }
  .clip-mask{position:absolute; inset:auto 0 0 0; padding:38px 14px 14px; background:linear-gradient(to top, rgba(15,27,45,.9), rgba(15,27,45,0));}
  .clip-title{color:#fff; font-size:14px; font-weight:600; line-height:1.4;}
  .clip-play{position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:48px; height:48px; border-radius:999px; border:1.5px solid rgba(255,255,255,.85); display:grid; place-items:center; color:#fff; transition:all .22s var(--ease);}
  .clip-card:hover .clip-play{background:var(--sprint); border-color:var(--sprint);}

  /* 横滑 */
  .hscroll{display:flex; gap:16px; overflow-x:auto; scroll-snap-type:x mandatory; padding-bottom:8px; -webkit-overflow-scrolling:touch; scrollbar-width:none;}
  .hscroll::-webkit-scrollbar{display:none;}
  .hscroll > *{scroll-snap-align:start; flex:0 0 auto;}

  /* 清单行 */
  .pick-row{display:flex; align-items:center; gap:16px; min-height:72px; padding:12px 14px; border-bottom:1px solid var(--line); border-radius:10px; transition:background-color .2s var(--ease);}
  .pick-row:hover{background:#F0F5FF;}
  .pick-row:hover .pick-idx{color:var(--brand);}
  .pick-row:hover .pick-arrow{transform:translateX(4px); color:var(--brand);}
  .pick-idx{font-size:28px; font-weight:700; color:#C9D6E8; width:44px; font-variant-numeric:tabular-nums; transition:color .2s var(--ease); line-height:1;}
  .pick-thumb{width:56px; height:56px; border-radius:12px; overflow:hidden; flex:0 0 auto; background:#EEF2F8;}
  .pick-thumb img{width:100%; height:100%; object-fit:cover;}
  .pick-arrow{color:var(--ink-3); transition:transform .2s var(--ease), color .2s var(--ease); flex:0 0 auto;}

  /* 资讯行卡 */
  .cms-row{display:flex; gap:14px; align-items:center; padding:12px; border:1px solid var(--line); border-radius:14px; background:#fff; transition:background-color .2s var(--ease), border-color .2s var(--ease);}
  .cms-row:hover{background:#F7FAFF; border-color:#D9E5F8;}
  .cms-row:hover .cms-row-title{color:var(--brand);}
  .cms-row-title{font-size:15px; font-weight:600; color:var(--ink); transition:color .2s var(--ease);}

  /* 口碑 */
  .quote-card{position:relative; width:320px; background:#fff; border:1px solid var(--line); border-radius:16px; box-shadow:var(--sh-1); padding:20px; overflow:hidden;}
  .quote-mark{position:absolute; top:8px; right:14px; font-size:64px; line-height:1; color:var(--brand); opacity:.08; font-weight:700;}
  .avatar{width:40px; height:40px; border-radius:999px; overflow:hidden; background:#EEF2F8; flex:0 0 auto;}
  .avatar img{width:100%; height:100%; object-fit:cover;}

  /* FAQ */
  .faq-item{background:#fff; border:1px solid var(--line); border-radius:16px; margin-bottom:12px; overflow:hidden; transition:box-shadow .2s var(--ease); position:relative;}
  .faq-item::before{content:""; position:absolute; left:0; top:12px; bottom:12px; width:3px; border-radius:0 3px 3px 0; background:var(--brand); opacity:0; transition:opacity .2s var(--ease);}
  .faq-item.is-open::before{opacity:1;}
  .faq-q{width:100%; min-height:64px; display:flex; align-items:center; justify-content:space-between; gap:16px; padding:0 20px; text-align:left; font-size:16px; font-weight:600; color:var(--ink);}
  .faq-plus{width:22px; height:22px; flex:0 0 auto; color:var(--brand); transition:transform .24s var(--ease);}
  .faq-item.is-open .faq-plus{transform:rotate(45deg);}
  .faq-a{max-height:0; overflow:hidden; transition:max-height .3s var(--ease);}
  .faq-a-inner{padding:0 20px 20px; font-size:15px; line-height:1.8; color:var(--ink-2);}

  /* CTA */
  .cta-wrap{background:linear-gradient(180deg,#F2F7FF 0%,#FFFFFF 100%); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
  .qr-slot{width:120px; height:120px; border-radius:12px; background:#fff; border:1px solid var(--line); display:grid; place-items:center; color:var(--ink-3); font-size:12px; text-align:center; padding:10px;}

  /* 页脚 */
  .site-footer{background:#F1F4F9; border-top:1px solid var(--line);}
  .footer-link{display:inline-block; font-size:14px; color:var(--ink-2); padding:5px 0; transition:color .2s var(--ease), transform .2s var(--ease);}
  .footer-link:hover{color:var(--brand); transform:translateX(2px);}
  .footer-title{font-size:14px; font-weight:700; color:var(--ink); margin-bottom:10px;}
  .social-btn{width:36px; height:36px; border-radius:10px; border:1px solid var(--line); background:#fff; display:grid; place-items:center; color:var(--ink-2); transition:all .2s var(--ease);}
  .social-btn:hover{color:var(--brand); border-color:#C8D8F5;}

  /* 底部跟买条 */
  .buy-bar{
    position:fixed; left:0; right:0; bottom:0; height:60px; z-index:55;
    display:flex; align-items:center; justify-content:space-between; gap:12px; padding:0 16px;
    background:#fff; border-top:1px solid var(--line); box-shadow:0 -6px 20px rgba(16,42,86,.08);
    transform:translateY(110%); transition:transform .26s var(--ease);
  }
  .buy-bar.is-visible{transform:translateY(0);}
  @media (min-width:768px){ .buy-bar{display:none;} }
  @media (max-width:767px){ body{padding-bottom:76px;} }

  .clamp-1{display:-webkit-box; -webkit-line-clamp:1; -webkit-box-orient:vertical; overflow:hidden;}
  .clamp-2{display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;}
  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important; transition-duration:.001ms !important;}
  }

/* roulang page: category1 */
:root{
  --brand:#1157C4;
  --brand-dark:#0B3C8C;
  --brand-soft:#EAF1FE;
  --accent:#FF6A2B;
  --accent-dark:#E85A1C;
  --teal:#12BFA6;
  --bg:#F7F8FA;
  --bg-alt:#F7F9FC;
  --card:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#5A6B80;
  --ink-3:#8A99AB;
  --line:#E7ECF3;
  --danger:#E5484D;
  --r-card:16px;
  --r-media:20px;
  --r-btn:10px;
  --shadow-sm:0 4px 18px rgba(16,42,86,.06),0 1px 2px rgba(16,42,86,.04);
  --shadow-md:0 12px 32px rgba(16,42,86,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:640px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(15,27,45,.08);
  box-shadow:0 4px 18px rgba(16,42,86,.05);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.95);box-shadow:0 8px 26px rgba(16,42,86,.10)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}

.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#1157C4,#0B3C8C);display:grid;place-items:center;flex:none}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--ink);white-space:nowrap}

.site-header .nav-desktop{display:none}
.site-header .nav-desktop .nav-link{display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:500;color:var(--ink-2);transition:color .2s var(--ease),background .2s var(--ease)}
.site-header .nav-desktop .nav-link:hover{color:var(--brand);background:rgba(234,241,254,.75)}
.site-header .nav-desktop .nav-link--active{color:var(--brand);background:var(--brand-soft);font-weight:600}
@media (min-width:768px){.site-header .nav-desktop{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}}

.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-2);cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:#C9D9F6;box-shadow:0 6px 16px rgba(16,42,86,.08);transform:translateY(-1px)}
.icon-btn:active{transform:translateY(0)}

.site-header .nav-search{display:none}
@media (min-width:640px){.site-header .nav-search{display:grid}}
.site-header .nav-cta{display:none}
@media (min-width:640px){.site-header .nav-cta{display:inline-flex}}
.site-header .nav-menu-btn{display:grid}
@media (min-width:768px){.site-header .nav-menu-btn{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,106,43,.28)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,43,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:14.5px}
.btn-text svg{transition:transform .2s var(--ease)}
.btn-text:hover svg{transform:translateX(4px)}

.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:500;background:var(--brand-soft);color:var(--brand)}
.badge-outline{background:#fff;border:1px solid var(--line);color:var(--ink-2)}

/* ---------- drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:70;opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease)}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-left:1px solid var(--line);
  transform:translateX(100%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-link{display:block;padding:14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--ink-2);transition:background .2s var(--ease),color .2s var(--ease)}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-link--active{background:var(--brand-soft);color:var(--brand);font-weight:600}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding-top:132px;padding-bottom:44px;
  background-color:var(--bg);
  background-image:linear-gradient(180deg,rgba(247,248,250,.55),rgba(247,248,250,.96) 78%,#F7F8FA),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);flex-wrap:wrap}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .current{color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw}
.page-title{font-size:clamp(28px,4.4vw,46px);line-height:1.26;font-weight:700;letter-spacing:-.01em;margin:18px 0 14px;max-width:900px}
.page-sub{font-size:16px;line-height:1.8;color:var(--ink-2);max-width:760px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:28px}
.stat-num{font-size:26px;font-weight:700;color:var(--brand);letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat-label{font-size:12px;color:var(--ink-3);margin-top:2px;letter-spacing:.02em}
.hero-divider{height:1px;background:var(--line);margin-top:36px}

/* ---------- section ---------- */
.section{padding:72px 0}
@media (max-width:1023px){.section{padding:56px 0}}
@media (max-width:639px){.section{padding:44px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-lead{font-size:15px;color:var(--ink-2);max-width:760px;margin-top:10px}

/* ---------- chips ---------- */
.filter-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;margin-bottom:28px;scrollbar-width:none;-ms-overflow-style:none}
.filter-row::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:14px;white-space:nowrap;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.chip:hover{border-color:#C9D9F6;color:var(--brand)}
.chip--active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(17,87,196,.24)}
.chip--active:hover{color:#fff}

/* ---------- clip grid ---------- */
.clip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1023px){.clip-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media (max-width:639px){.clip-grid{grid-template-columns:1fr;gap:20px}}
.clip-card{
  position:relative;display:block;border-radius:var(--r-card);overflow:hidden;background:#0F1B2D;
  aspect-ratio:9/16;box-shadow:var(--shadow-sm);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.clip-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:9/16;transition:transform .4s var(--ease)}
.clip-card:hover img{transform:scale(1.03)}
.clip-card__mask{position:absolute;left:0;right:0;bottom:0;height:62%;background:linear-gradient(to top,rgba(11,20,38,.94),rgba(11,20,38,.42) 52%,rgba(11,20,38,0));pointer-events:none}
.clip-card__dur{
  position:absolute;top:12px;left:12px;height:24px;display:inline-flex;align-items:center;padding:0 9px;
  border-radius:999px;background:rgba(15,27,45,.62);color:#fff;font-size:11px;letter-spacing:.02em;
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
}
.clip-card__play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:999px;border:1.5px solid var(--accent);
  background:rgba(255,255,255,.22);display:grid;place-items:center;color:#fff;
  transition:background .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.clip-card:hover .clip-card__play{background:var(--accent);border-color:var(--accent);transform:translate(-50%,-50%) scale(1.06)}
.clip-card__body{position:absolute;left:0;right:0;bottom:0;padding:16px}
.clip-card__title{color:#fff;font-size:15px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tag-row{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.tag-pill{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.24)}

/* ---------- check list ---------- */
.check-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-media);padding:32px;box-shadow:var(--shadow-sm)}
@media (max-width:639px){.check-panel{padding:22px}}
.check-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:26px}
@media (max-width:1023px){.check-cols{grid-template-columns:repeat(2,1fr);gap:24px}}
@media (max-width:639px){.check-cols{grid-template-columns:1fr;gap:22px}}
.check-col__title{font-size:15px;font-weight:600;color:var(--ink);display:flex;align-items:center;gap:8px;margin-bottom:14px}
.check-col__idx{width:24px;height:24px;border-radius:8px;background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center;flex:none}
.check-list{display:grid;gap:11px}
.check-item{display:flex;gap:10px;font-size:15px;line-height:1.7;color:var(--ink-2)}
.check-item svg{flex:none;margin-top:5px;color:var(--brand)}

/* ---------- rhythm dark block ---------- */
.rhythm{position:relative;overflow:hidden;background:#0F1B2D;border-radius:var(--r-media);padding:48px;color:#fff}
@media (max-width:639px){.rhythm{padding:28px 22px}}
.rhythm::after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:18px 18px;pointer-events:none}
.rhythm > *{position:relative;z-index:1}
.rhythm-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:rgba(255,255,255,.68);letter-spacing:.04em}
.dot-live{width:7px;height:7px;border-radius:999px;background:var(--teal);box-shadow:0 0 0 4px rgba(18,191,166,.18)}
.rhythm-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.3;margin-top:14px}
.rhythm-desc{font-size:15px;line-height:1.85;color:rgba(255,255,255,.7);max-width:700px;margin-top:12px}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px}
@media (max-width:1023px){.metric-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:639px){.metric-grid{grid-template-columns:1fr}}
.metric{border:1px solid rgba(255,255,255,.13);border-radius:14px;padding:18px;background:rgba(255,255,255,.04);transition:background .2s var(--ease),transform .2s var(--ease)}
.metric:hover{background:rgba(255,255,255,.08);transform:translateY(-2px)}
.metric__num{font-size:26px;font-weight:700;letter-spacing:-.02em;color:#fff}
.metric__num em{font-style:normal;font-size:13px;font-weight:500;color:rgba(255,255,255,.6);margin-left:4px}
.metric__label{font-size:12.5px;color:rgba(255,255,255,.6);margin-top:6px}
.order-list{margin-top:34px;display:grid;gap:14px;border-top:1px solid rgba(255,255,255,.12);padding-top:26px}
.order-item{display:flex;gap:14px;align-items:flex-start}
.order-idx{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em;flex:none;padding-top:4px}
.order-text{font-size:15px;line-height:1.75;color:rgba(255,255,255,.82)}
.order-text b{color:#fff;font-weight:600}

/* ---------- faq ---------- */
.faq-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-media);padding:8px 24px;box-shadow:var(--shadow-sm)}
@media (max-width:639px){.faq-card{padding:6px 20px}}
.faq-item{position:relative;border-bottom:1px solid var(--line);padding-left:0;transition:padding .22s var(--ease)}
.faq-item:last-child{border-bottom:0}
.faq-item::before{content:"";position:absolute;left:0;top:24px;bottom:24px;width:3px;border-radius:3px;background:var(--brand);opacity:0;transition:opacity .22s var(--ease)}
.faq-item.is-open{padding-left:18px}
.faq-item.is-open::before{opacity:1}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:22px 0;font-size:16px;font-weight:600;color:var(--ink);cursor:pointer;line-height:1.6}
.faq-q:hover{color:var(--brand)}
.faq-icon{flex:none;color:var(--ink-3);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{font-size:15px;line-height:1.85;color:var(--ink-2);padding-bottom:22px;margin:0}

/* ---------- cross links + cta ---------- */
.cross-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:34px}
.cross-pill{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-2);transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.cross-pill:hover{border-color:#C9D9F6;color:var(--brand);transform:translateY(-2px);box-shadow:0 8px 20px rgba(16,42,86,.08)}
.cross-pill--current{background:var(--brand-soft);border-color:#C9D9F6;color:var(--brand);font-weight:600}
.back-home{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-3)}
.back-home:hover{color:var(--brand)}

.cta-band{
  background:linear-gradient(90deg,#F2F7FF,#FFFFFF);
  border:1px solid var(--line);border-radius:var(--r-media);
  padding:52px 48px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  flex-wrap:wrap;box-shadow:var(--shadow-sm);
}
@media (max-width:639px){.cta-band{padding:28px 22px;gap:24px}}
.cta-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32;letter-spacing:-.01em;max-width:620px}
.cta-desc{font-size:14px;color:var(--ink-2);margin-top:12px;max-width:620px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.qr-box{width:120px;height:120px;border-radius:12px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-3);box-shadow:var(--shadow-sm);flex:none}
.qr-box span{font-size:10.5px;letter-spacing:.14em;color:var(--ink-3);margin-top:6px;display:block;text-align:center}

/* ---------- footer ---------- */
.site-footer{background:#F1F4F9;border-top:1px solid var(--line);color:var(--ink-2)}
.site-footer .logo{margin-bottom:2px}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin-bottom:14px}
.footer-link{display:block;font-size:13.5px;color:var(--ink-2);padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
a.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.social-btn{width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-3);transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
.social-btn:hover{color:var(--brand);border-color:#C9D9F6;transform:translateY(-2px)}

/* ---------- bottom bar ---------- */
.buy-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:50;
  display:none;align-items:center;justify-content:space-between;gap:12px;
  height:60px;padding:0 20px;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(16,42,86,.08);
}
.buy-bar__text{font-size:13.5px;color:var(--ink-2);line-height:1.4}
.buy-bar__text b{color:var(--ink);font-weight:700}
.buy-bar.is-hidden{display:none !important}
@media (max-width:767px){
  .buy-bar{display:flex}
  body{padding-bottom:76px}
}

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

/* roulang page: article */
:root{
  --brand:#1157C4;
  --brand-dark:#0B3C8C;
  --brand-soft:#EAF1FE;
  --rush:#FF6A2B;
  --rush-dark:#E85A1C;
  --data:#12BFA6;
  --bg:#F7F8FA;
  --bg-alt:#F7F9FC;
  --card:#FFFFFF;
  --ink:#0F1B2D;
  --ink-2:#5A6B80;
  --ink-3:#8A99AB;
  --line:#E7ECF3;
  --danger:#E5484D;
  --r-card:16px;
  --r-media:20px;
  --r-btn:10px;
  --sh-sm:0 4px 18px rgba(16,42,86,.06),0 1px 2px rgba(16,42,86,.04);
  --sh-lg:0 12px 32px rgba(16,42,86,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.site-body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
.site-body img{max-width:100%}
:where(a,button,input,summary):focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}

body .container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (max-width:640px){body .container{padding-left:20px;padding-right:20px}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.72);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(15,27,45,.08);
  box-shadow:var(--sh-sm);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.95);box-shadow:var(--sh-lg)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}

.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,#1157C4,#0B3C8C);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(17,87,196,.28);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.4px;color:var(--ink);white-space:nowrap}

.nav-link{
  display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;
  font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap;text-decoration:none;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link--active{color:var(--brand);background:var(--brand-soft);font-weight:600}

.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--ink-2);position:relative;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.icon-btn svg{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);box-shadow:0 6px 16px rgba(17,87,196,.14)}

.btn{
  height:40px;padding:0 22px;border-radius:999px;font-size:14.5px;font-weight:600;
  align-items:center;justify-content:center;gap:8px;text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
:where(.btn){display:inline-flex}
.btn-primary{background:var(--rush);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.26)}
.btn-primary:hover{background:var(--rush-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,43,.3)}
.btn-outline{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(15,27,45,.45);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;z-index:80;height:100%;width:82vw;max-width:360px;
  background:rgba(255,255,255,.94);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  transform:translateX(100%);transition:transform .3s var(--ease);
  padding:22px 20px;overflow-y:auto;box-shadow:-12px 0 40px rgba(16,42,86,.14);
}
.drawer.is-open{transform:translateX(0)}
.drawer-link{
  display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:500;
  color:var(--ink-2);text-decoration:none;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-soft);color:var(--brand)}

/* ---------- 版面 ---------- */
.site-main{padding-top:0}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--ink-3);padding-top:96px}
.breadcrumb a{color:var(--ink-3);text-decoration:none;transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C6D0DC}
.breadcrumb .current{color:var(--ink-2);min-width:0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{padding:22px 0 0}
.article-title{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.2px;margin:0 0 14px;color:var(--ink)}
@media (min-width:768px){.article-title{font-size:38px}}
@media (min-width:1024px){.article-title{font-size:44px;max-width:960px}}
.article-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);padding-bottom:20px;border-bottom:1px solid var(--line);
}
.meta-dot{width:4px;height:4px;border-radius:999px;background:#C6D0DC;flex:none}

.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;white-space:nowrap;
}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-soft{background:#F1F4F9;color:var(--ink-2)}

.article-cover{
  max-width:960px;margin:28px auto 0;border-radius:var(--r-media);overflow:hidden;
  box-shadow:var(--sh-sm);background:#EEF2F7;
}
.article-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}

.article-layout{margin-top:44px}
@media (min-width:1024px){
  .article-layout{display:grid;grid-template-columns:220px minmax(0,760px);gap:40px;justify-content:center;align-items:start}
}
.article-side{display:none}
@media (min-width:1024px){.article-side{display:block;position:sticky;top:96px}}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-sm)}
.side-card + .side-card{margin-top:18px}
.side-title{font-size:13px;font-weight:600;color:var(--ink-2);letter-spacing:.4px;margin:0 0 12px}
.toc-list{list-style:none;margin:0;padding:0;max-height:300px;overflow:auto}
.toc-item{margin:0}
.toc-link{
  display:block;font-size:13.5px;line-height:1.6;color:var(--ink-2);text-decoration:none;
  padding:6px 0 6px 12px;border-left:2px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc-link:hover{color:var(--brand);border-left-color:var(--brand)}
.toc-link.is-lv3{padding-left:24px;font-size:13px;color:var(--ink-3)}
.toc-static{color:var(--ink-3);cursor:default}
.hot-item{
  display:block;font-size:13.5px;line-height:1.6;color:var(--ink-2);text-decoration:none;
  padding:9px 0;border-bottom:1px dashed var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.hot-item:last-child{border-bottom:0}
.hot-item:hover{color:var(--brand);padding-left:4px}

.article-body{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-media);
  padding:26px 22px;box-shadow:var(--sh-sm);max-width:760px;
}
@media (min-width:768px){.article-body{padding:40px 46px}}

.prose-cn{font-size:17px;line-height:1.9;color:#22303F}
.prose-cn > *:first-child{margin-top:0}
.prose-cn p{margin:0 0 1.4em}
.prose-cn h2{
  position:relative;font-size:24px;line-height:1.35;font-weight:700;color:var(--ink);
  margin:2em 0 .9em;padding-left:16px;scroll-margin-top:96px;
}
.prose-cn h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:26px;border-radius:2px;background:var(--brand)}
.prose-cn h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--ink);margin:1.6em 0 .7em;scroll-margin-top:96px}
.prose-cn h4{font-size:17px;font-weight:600;margin:1.4em 0 .6em}
.prose-cn blockquote{
  margin:1.6em 0;padding:16px 20px;background:#F2F7FF;border-left:4px solid var(--brand);
  border-radius:8px;color:var(--ink-2);font-size:16px;
}
.prose-cn blockquote p:last-child{margin-bottom:0}
.prose-cn img{border-radius:12px;margin:1.6em auto;display:block}
.prose-cn figure{margin:1.6em 0}
.prose-cn figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.prose-cn ul{list-style:none;margin:0 0 1.4em;padding:0}
.prose-cn ul li{position:relative;padding-left:22px;margin-bottom:.5em}
.prose-cn ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--brand)}
.prose-cn ol{list-style:none;counter-reset:cnli;margin:0 0 1.4em;padding:0}
.prose-cn ol li{position:relative;padding-left:34px;margin-bottom:.6em;counter-increment:cnli}
.prose-cn ol li::before{
  content:counter(cnli);position:absolute;left:0;top:.22em;width:22px;height:22px;
  border:1px solid var(--brand);border-radius:999px;color:var(--brand);font-size:12px;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.prose-cn table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;overflow:hidden;border-radius:10px}
.prose-cn th,.prose-cn td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.prose-cn th{background:#F7F9FC;font-weight:600;color:var(--ink)}
.prose-cn tbody tr:nth-child(even){background:#F7F9FC}
.prose-cn code{background:#F1F4F9;border-radius:4px;padding:2px 6px;font-size:.92em;color:var(--ink-2)}
.prose-cn pre{background:#0F1B2D;color:#E7ECF3;border-radius:12px;padding:18px 20px;overflow:auto;font-size:14px;line-height:1.7}
.prose-cn pre code{background:none;color:inherit;padding:0}
.prose-cn a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose-cn a:hover{color:var(--brand-dark)}
.prose-cn hr{border:0;border-top:1px solid var(--line);margin:2em 0}

.empty-state{text-align:center;padding:44px 16px}
.empty-icon{
  width:96px;height:96px;border-radius:20px;background:#F1F4F9;color:var(--ink-3);
  display:flex;align-items:center;justify-content:center;margin:0 auto 20px;
}
.empty-title{font-size:20px;font-weight:600;color:var(--ink);margin:0 0 8px}
.empty-desc{font-size:14px;color:var(--ink-2);margin:0 0 22px}

.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:500;text-decoration:none;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{background:#D8E5FC;color:var(--brand-dark)}

.article-share{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:26px;font-size:13px;color:var(--ink-3)}
.share-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.share-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff}

.article-divider{height:1px;background:var(--line);margin:32px 0}

.section-title{font-size:24px;line-height:1.35;font-weight:700;color:var(--ink);margin:0 0 18px}
.related-grid{display:grid;gap:18px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.rec-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-sm);transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--sh-lg)}
.rec-link{display:block;text-decoration:none;color:inherit;padding-bottom:18px}
.rec-thumb{aspect-ratio:16/9;overflow:hidden;background:#EEF2F7}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.rec-card:hover .rec-thumb img{transform:scale(1.03)}
.rec-card .badge{margin:14px 18px 0}
.rec-title{font-size:16px;line-height:1.5;font-weight:600;color:var(--ink);margin:8px 18px 6px}
.rec-desc{font-size:13px;line-height:1.7;color:var(--ink-2);margin:0 18px}

.back-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:30px;font-size:14px;font-weight:500;
  color:var(--brand);text-decoration:none;transition:gap .2s var(--ease),color .2s var(--ease);
}
.back-link:hover{gap:10px;color:var(--brand-dark)}

.cta-band{
  margin-top:96px;padding:64px 0;
  background:linear-gradient(90deg,#F2F7FF 0%,#FFFFFF 100%);
  border-top:1px solid var(--line);
}
@media (min-width:768px){.cta-band{padding:88px 0}}
.cta-inner{display:flex;flex-direction:column;gap:32px}
@media (min-width:1024px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between}}
.cta-title{font-size:25px;line-height:1.35;font-weight:700;color:var(--ink);margin:0 0 12px;max-width:640px}
@media (min-width:768px){.cta-title{font-size:31px}}
.cta-desc{font-size:14px;color:var(--ink-2);margin:0 0 24px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.qr-slot{
  width:120px;height:120px;flex:none;border-radius:12px;background:#fff;border:1px solid var(--line);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--ink-3);font-size:12px;text-align:center;box-shadow:var(--sh-sm);
}

.site-footer{background:#F1F4F9;border-top:1px solid var(--line)}
.footer-title{font-size:14px;font-weight:600;color:var(--ink);margin:0 0 14px}
.site-footer .footer-link{font-size:13.5px;color:var(--ink-2);padding:5px 0;text-decoration:none;transition:color .2s var(--ease),transform .2s var(--ease)}
.site-footer a.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.social-btn{
  width:36px;height:36px;border-radius:10px;background:#fff;border:1px solid var(--line);
  color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --brand:#1157C4;
  --brand-dark:#0B3C8C;
  --brand-light:#EAF1FE;
  --orange:#FF6A2B;
  --orange-dark:#E85A1C;
  --cyan:#12BFA6;
  --bg:#F7F8FA;
  --card:#FFFFFF;
  --panel:#F7F9FC;
  --ink:#0F1B2D;
  --ink-2:#5A6B80;
  --ink-3:#8A99AB;
  --line:#E7ECF3;
  --danger:#E5484D;
  --r-card:16px;
  --r-media:20px;
  --r-btn:10px;
  --shadow-soft:0 4px 18px rgba(16,42,86,.06), 0 1px 2px rgba(16,42,86,.04);
  --shadow-hover:0 12px 32px rgba(16,42,86,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:767px){.container{padding:0 20px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid rgba(15,27,45,.08);
  box-shadow:0 2px 14px rgba(16,42,86,.05);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.95);box-shadow:0 6px 22px rgba(16,42,86,.1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  box-shadow:0 6px 14px rgba(17,87,196,.28);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:.3px;color:var(--ink)}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;
  font-size:15px;color:var(--ink-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-light)}
.nav-link--active{color:var(--brand);background:var(--brand-light);font-weight:600}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-2);background:rgba(255,255,255,.65);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:#fff;transform:translateY(-1px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.site-header .btn{height:40px}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 16px rgba(255,106,43,.28)}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(232,90,28,.3)}
.btn-ghost{border:1px solid var(--brand);color:var(--brand);background:#fff}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:360px;z-index:80;
  padding:22px 22px 32px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(16px) saturate(150%);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .32s var(--ease);
}
.drawer.is-open{transform:translateX(0)}
.drawer-nav{display:grid;gap:6px;margin-top:22px}
.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 16px;border-radius:12px;
  font-size:15px;color:var(--ink-2);transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer-link:hover{background:var(--brand-light);color:var(--brand)}
.drawer-link--active{background:var(--brand-light);color:var(--brand);font-weight:600}

/* ---------- page hero ---------- */
.page-hero{
  padding:148px 0 56px;
  background-image:
    linear-gradient(180deg,rgba(247,248,250,.86) 0%,rgba(247,248,250,.96) 60%,#F7F8FA 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center top;
  border-bottom:1px solid var(--line);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-3)}
.crumb a{color:var(--ink-3);transition:color .2s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CCD8}
.page-title{
  margin-top:18px;
  font-size:clamp(28px,4.6vw,46px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:-.5px;
}
.page-sub{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:640px}
.page-divider{margin-top:28px;height:1px;background:var(--line)}

/* ---------- sections ---------- */
.section{padding:36px 0}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:var(--brand-light);color:var(--brand);font-size:13px;font-weight:600;
}
.alt-row{display:grid;gap:36px;align-items:center}
.alt-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-media);
  box-shadow:var(--shadow-soft);
}
.alt-body h2{font-size:24px;line-height:1.35;font-weight:700;margin:16px 0 12px}
.alt-body p{margin-bottom:14px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:560px}
.check-list{list-style:none;margin-top:18px;display:grid;gap:10px}
.check-list li{position:relative;padding-left:28px;font-size:15px;color:var(--ink-2)}
.check-list li::before{
  content:"";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:6px;background:var(--brand-light);
}
.check-list li::after{
  content:"";position:absolute;left:6px;top:7px;width:6px;height:10px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);transform:rotate(45deg);
}
@media (min-width:768px){
  .alt-row{gap:44px}
}
@media (min-width:1024px){
  .alt-row{grid-template-columns:1fr 1fr;gap:64px}
  .alt-row--reverse .alt-media{order:2}
  .alt-body h2{font-size:26px}
}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px}
.faq-item{
  position:relative;background:#fff;border-radius:var(--r-card);
  box-shadow:var(--shadow-soft);overflow:hidden;margin-bottom:12px;
  transition:box-shadow .24s var(--ease);
}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand);
  transform:scaleY(0);transform-origin:top;transition:transform .24s var(--ease);
}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:64px;padding:14px 24px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
}
.faq-icon{flex:0 0 auto;width:22px;height:22px;color:var(--brand);transition:transform .24s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- cta ---------- */
.cta-band{
  display:grid;gap:32px;align-items:center;
  background:linear-gradient(180deg,#F2F7FF 0%,#FFFFFF 100%);
  border:1px solid var(--line);border-radius:24px;padding:40px 26px;
}
.cta-band h2{font-size:26px;line-height:1.35;font-weight:700;margin-bottom:12px}
.cta-band p{font-size:15px;line-height:1.8;color:var(--ink-2);max-width:560px}
.cta-qr{
  width:120px;height:120px;border-radius:12px;background:#fff;
  border:1px solid var(--line);padding:8px;
}
.cta-qr img{width:100%;height:100%;object-fit:cover;border-radius:8px}
@media (min-width:768px){
  .cta-band{padding:56px 48px;grid-template-columns:1fr 140px}
}

/* ---------- cross links ---------- */
.chip-link{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14px;color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.chip-link:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-light);transform:translateY(-2px)}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:3px}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover span{transform:translateX(4px)}

/* ---------- footer ---------- */
.site-footer{background:#F1F4F9;border-top:1px solid var(--line);margin-top:24px}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px}
.footer-link{
  font-size:14px;color:var(--ink-2);padding:5px 0;line-height:1.6;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
a.footer-link:hover{color:var(--brand);transform:translateX(2px)}
.social-btn{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.social-btn:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}

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

/* roulang page: category3 */
:root{
    --brand:#1157C4;
    --brand-dark:#0B3C8C;
    --brand-soft:#EAF1FE;
    --accent:#FF6A2B;
    --accent-dark:#E85A1C;
    --teal:#12BFA6;
    --bg:#F7F8FA;
    --card:#FFFFFF;
    --alt:#F7F9FC;
    --ink:#0F1B2D;
    --ink-2:#5A6B80;
    --ink-3:#8A99AB;
    --line:#E7ECF3;
    --danger:#E5484D;
    --radius-card:16px;
    --radius-media:20px;
    --radius-btn:10px;
    --shadow-1:0 4px 18px rgba(16,42,86,.06), 0 1px 2px rgba(16,42,86,.04);
    --shadow-2:0 12px 32px rgba(16,42,86,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-cn);
    background:var(--bg);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
  a:hover{color:var(--brand)}
  button{font-family:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .tnum{font-variant-numeric:tabular-nums}

  .container{
    width:100% !important;
    max-width:1200px !important;
    margin:0 auto;
    padding-left:24px;
    padding-right:24px;
  }
  @media (max-width:640px){
    .container{padding-left:20px;padding-right:20px}
  }

  /* ============ 头部导航 ============ */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    height:72px;
    display:flex;align-items:center;
    background:rgba(255,255,255,.72);
    -webkit-backdrop-filter:blur(14px) saturate(160%);
    backdrop-filter:blur(14px) saturate(160%);
    border-bottom:1px solid rgba(15,27,45,.08);
    box-shadow:0 6px 24px rgba(16,42,86,.06);
    transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
  }
  .site-header.is-scrolled{
    height:64px;
    background:rgba(255,255,255,.95);
    box-shadow:0 8px 28px rgba(16,42,86,.1);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
  .logo{display:inline-flex;align-items:center;gap:10px}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;
    background:linear-gradient(135deg,var(--brand),var(--brand-dark));
    display:grid;place-items:center;
    box-shadow:0 4px 12px rgba(17,87,196,.28);
    flex:0 0 auto;
  }
  .logo-text{font-weight:700;font-size:17px;letter-spacing:.2px;color:var(--ink);white-space:nowrap}
  .nav-link{
    display:inline-flex;align-items:center;height:36px;padding:0 14px;
    border-radius:999px;font-size:14.5px;color:var(--ink-2);font-weight:500;
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-soft)}
  .nav-link--active{color:var(--brand);background:var(--brand-soft);font-weight:600}
  .icon-btn{
    width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
    background:#fff;color:var(--ink-2);display:grid;place-items:center;cursor:pointer;
    transition:all .2s var(--ease);
  }
  .icon-btn:hover{color:var(--brand);border-color:var(--brand);box-shadow:0 6px 18px rgba(16,42,86,.1)}
  .site-header .btn{height:40px;font-size:14px;padding:0 20px}

  @media (max-width:639px){
    .btn.nav-cta{display:none}
    .icon-btn.nav-search{display:none}
  }

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:999px;font-weight:600;font-size:14.5px;
    height:44px;padding:0 22px;cursor:pointer;border:1px solid transparent;
    transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
    white-space:nowrap;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(255,106,43,.28)}
  .btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,43,.34)}
  .btn-primary:active{transform:translateY(0)}
  .btn-outline{border-color:var(--brand);color:var(--brand);background:#fff}
  .btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-2px)}
  .btn-ghost{color:var(--brand);background:transparent;padding:0 4px}
  .btn-ghost:hover{color:var(--brand-dark)}
  .btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
  .link-arrow svg{transition:transform .2s var(--ease)}
  .link-arrow:hover svg{transform:translateX(4px)}

  .badge{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;
    border-radius:999px;font-size:13px;font-weight:500;
    background:var(--brand-soft);color:var(--brand);
  }
  .badge--teal{background:rgba(18,191,166,.12);color:#0E9E8A}

  .chip{
    display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 20px;
    border-radius:999px;border:1px solid var(--line);background:#fff;
    font-size:14.5px;color:var(--ink-2);font-weight:500;
    transition:all .2s var(--ease);
  }
  .chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
  .chip--active{background:var(--brand);border-color:var(--brand);color:#fff}
  .chip--active:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}

  /* ============ 页面头部 ============ */
  .page-head{
    position:relative;
    padding:132px 0 0;
    background-image:
      linear-gradient(180deg,rgba(247,248,250,.94) 0%,rgba(247,248,250,.99) 70%),
      url("/assets/images/backpic/back-1.png");
    background-size:cover;
    background-position:center;
    overflow:hidden;
  }
  .page-title{
    font-size:clamp(28px,4.2vw,46px);
    line-height:1.25;
    font-weight:700;
    letter-spacing:-.4px;
    margin:18px 0 0;
    max-width:16em;
  }
  .page-lead{font-size:16.5px;color:var(--ink-2);margin:14px 0 0;max-width:34em}
  .page-rule{height:1px;background:var(--line);margin-top:48px}

  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap}
  .breadcrumb a{color:var(--ink-3)}
  .breadcrumb a:hover{color:var(--brand)}
  .breadcrumb [aria-current]{color:var(--ink-2)}

  .head-media{
    border-radius:var(--radius-media);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-1);
    background:#fff;
    margin:0;
  }
  .head-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
  .head-media:hover img{transform:scale(1.03)}

  .stat-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:16px}
  .stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
  .stat b{display:block;font-size:22px;line-height:1.2;font-weight:700;color:var(--brand)}
  .stat span{display:block;font-size:12px;color:var(--ink-3);margin-top:4px}

  /* ============ 板块 ============ */
  .section{padding:96px 0}
  .section--alt{background:var(--alt)}
  .section--tight{padding:64px 0 80px}
  @media (max-width:1023px){
    .section{padding:72px 0}
    .section--tight{padding:56px 0 64px}
  }
  @media (max-width:767px){
    .section{padding:56px 0}
  }

  .section-head{max-width:760px;margin-bottom:44px}
  .eyebrow{
    display:inline-block;font-size:12px;font-weight:600;letter-spacing:.16em;
    color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:5px 12px;
  }
  .section-head h2{
    font-size:clamp(24px,2.6vw,30px);
    line-height:1.3;font-weight:700;margin:16px 0 0;letter-spacing:-.2px;
  }
  .section-head p{margin:12px 0 0;font-size:16px;color:var(--ink-2);max-width:760px}
  .cross-title{font-size:20px;font-weight:600;margin:0 0 20px}

  /* ============ 准备事项 ============ */
  .prep-panel{display:grid;gap:36px}
  @media (min-width:1024px){
    .prep-panel{grid-template-columns:minmax(0,5fr) minmax(0,7fr);align-items:center;gap:48px}
  }
  .prep-media{
    margin:0;border-radius:var(--radius-media);overflow:hidden;
    border:1px solid var(--line);box-shadow:var(--shadow-1);background:#fff;
  }
  .prep-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s var(--ease)}
  .prep-media:hover img{transform:scale(1.03)}

  .prep-list{list-style:none;margin:0;padding:0}
  .prep-row{
    display:grid;grid-template-columns:40px 1fr;gap:16px;
    padding:20px 0;border-top:1px solid var(--line);
  }
  .prep-row:last-child{border-bottom:1px solid var(--line)}
  .prep-num{font-size:14px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;padding-top:2px}
  .prep-row h3{font-size:17px;font-weight:600;margin:0 0 6px}
  .prep-row p{margin:0;font-size:15px;color:var(--ink-2);max-width:560px}

  /* ============ 时间线 ============ */
  .timeline{list-style:none;margin:0;padding:0;position:relative}
  .timeline::before{
    content:"";position:absolute;left:24px;top:12px;bottom:12px;width:1px;background:var(--line);
  }
  .timeline-item{
    position:relative;display:grid;grid-template-columns:48px 1fr;gap:24px;padding-bottom:36px;
  }
  .timeline-item:last-child{padding-bottom:0}
  .timeline-node{
    width:32px;height:32px;margin-left:8px;border-radius:999px;
    border:1px solid var(--brand);background:#fff;color:var(--brand);
    display:grid;place-items:center;font-size:13px;font-weight:700;
    font-variant-numeric:tabular-nums;position:relative;z-index:1;
    box-shadow:0 0 0 6px var(--alt);
  }
  .timeline-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 24px;box-shadow:var(--shadow-1);
    transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  }
  .timeline-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D8E2F2}
  .timeline-card h3{font-size:20px;font-weight:600;margin:0 0 10px}
  .timeline-card p{margin:0 0 8px;font-size:15px;color:var(--ink-2);max-width:640px}
  .timeline-card p:last-of-type{margin-bottom:14px}

  @media (max-width:639px){
    .timeline::before{left:16px}
    .timeline-item{grid-template-columns:36px 1fr;gap:16px;padding-bottom:28px}
    .timeline-node{margin-left:0}
    .timeline-card{padding:18px}
    .timeline-card h3{font-size:18px}
  }

  /* ============ 横向滚动口碑 ============ */
  .rail{
    display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:4px 4px 12px;scrollbar-width:none;-ms-overflow-style:none;
  }
  .rail::-webkit-scrollbar{display:none}
  .rail > *{scroll-snap-align:start;flex:0 0 auto}

  .quote-card{
    width:320px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px;box-shadow:var(--shadow-1);position:relative;overflow:hidden;
    transition:box-shadow .2s var(--ease),transform .2s var(--ease);
  }
  .quote-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
  .quote-card::after{
    content:"\201C";position:absolute;right:16px;top:0;font-size:72px;line-height:1;
    font-family:Georgia,serif;color:var(--brand);opacity:.08;pointer-events:none;
  }
  .quote-head{display:flex;align-items:center;gap:12px}
  .avatar{width:40px;height:40px;border-radius:999px;object-fit:cover;flex:0 0 auto}
  .quote-name{font-size:14.5px;font-weight:600;margin:0}
  .stars{color:var(--accent);font-size:13px;letter-spacing:2px;line-height:1.2}
  .quote-text{font-size:14.5px;color:var(--ink-2);margin:14px 0 0;line-height:1.75}
  .quote-time{font-size:12px;color:var(--ink-3);margin:14px 0 0;font-variant-numeric:tabular-nums}

  /* ============ FAQ ============ */
  .faq{display:grid;gap:12px;max-width:900px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-1);overflow:hidden;
    transition:box-shadow .2s var(--ease);
  }
  .faq-item.is-open{box-shadow:var(--shadow-2),inset 3px 0 0 var(--brand)}
  .faq-q{
    width:100%;min-height:64px;padding:12px 22px;background:none;border:0;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    font-size:16px;font-weight:600;color:var(--ink);text-align:left;
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--brand)}
  .faq-icon{width:24px;height:24px;flex:0 0 auto;display:grid;place-items:center;color:var(--brand);transition:transform .24s var(--ease)}
  .faq-item.is-open .faq-icon{transform:rotate(45deg)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
  .faq-a p{margin:0;padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:760px}
  .faq-item.is-open .faq-a{max-height:360px}

  /* ============ CTA ============ */
  .cta-band{
    padding:96px 0;
    background:linear-gradient(135deg,#F2F7FF 0%,#FFFFFF 65%);
    border-top:1px solid var(--line);
  }
  .cta-inner{display:grid;gap:32px}
  @media (min-width:1024px){
    .cta-inner{grid-template-columns:1fr auto;align-items:center;gap:56px}
  }
  .cta-band h2{font-size:clamp(24px,3vw,32px);line-height:1.3;font-weight:700;margin:0 0 12px;max-width:22em}
  .cta-band p{margin:0 0 26px;font-size:15px;color:var(--ink-2);max-width:620px}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px}
  .qr-box{
    width:120px;height:120px;border-radius:12px;background:#fff;border:1px solid var(--line);
    display:grid;place-items:center;box-shadow:var(--shadow-1);
  }
  @media (max-width:767px){
    .cta-band{padding:64px 0}
  }

  /* ============ 页脚 ============ */
  .site-footer{background:#F1F4F9;border-top:1px solid var(--line)}
  .footer-title{font-size:14px;font-weight:600;color:var(--ink);margin:0 0 14px}
  .footer-link{display:block;font-size:13.5px;color:var(--ink-2);padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
  a.footer-link:hover{color:var(--brand);transform:translateX(2px)}
  .social-btn{
    width:36px;height:36px;border-radius:10px;border:1px solid var(--line);
    background:#fff;display:grid;place-items:center;color:var(--ink-2);
    transition:all .2s var(--ease);
  }
  .social-btn:hover{color:var(--brand);border-color:var(--brand)}

  /* ============ 移动端抽屉 ============ */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(15,27,45,.45);z-index:70;
    opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s var(--ease);
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:360px;z-index:80;
    background:rgba(255,255,255,.95);
    -webkit-backdrop-filter:blur(18px) saturate(160%);
    backdrop-filter:blur(18px) saturate(160%);
    border-left:1px solid var(--line);
    transform:translateX(100%);
    transition:transform .28s var(--ease);
    display:flex;flex-direction:column;padding:20px;
  }
  .drawer.is-open{transform:none}
  .drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .drawer__links{display:flex;flex-direction:column;gap:6px;padding:18px 0;flex:1}
  .drawer-link{
    display:flex;align-items:center;height:46px;padding:0 16px;border-radius:12px;
    font-size:15px;color:var(--ink-2);font-weight:500;
    transition:all .2s var(--ease);
  }
  .drawer-link:hover{background:var(--brand-soft);color:var(--brand)}
  .drawer-link--active{background:var(--brand-soft);color:var(--brand);font-weight:600}
  .drawer__foot{padding-top:16px;border-top:1px solid var(--line)}
  .drawer__foot .btn{width:100%}

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