/* roulang page: index */
:root{
    --ink:#0E1013;
    --ink-2:#1A1D22;
    --signal:#FF5A1F;
    --mint:#14C3A2;
    --paper:#F7F6F3;
    --card:#FFFFFF;
    --line:#E6E4DF;
    --t1:#17181C;
    --t2:#5A5F6B;
    --t3:#8D93A0;
    --shadow-sm:0 8px 24px rgba(14,16,19,.06);
    --shadow-lg:0 16px 40px rgba(14,16,19,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    background:var(--paper);
    color:var(--t1);
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
  ul{list-style:none;padding:0;}
  :focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:6px;}
  .tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

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

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .24s var(--ease),background .24s var(--ease);
  }
  .site-header.is-stuck{box-shadow:0 6px 20px rgba(14,16,19,.08);}
  .nav-inner{height:64px;display:flex;align-items:center;gap:16px;}
  @media (min-width:768px){.nav-inner{height:72px;gap:24px;}}
  .logo-mark{flex:none;width:30px;height:30px;border-radius:9px;background:var(--ink);display:flex;align-items:center;justify-content:center;}
  .logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
  @media (min-width:1024px){.logo-text{font-size:19px;}}
  .logo-text .hl{color:var(--signal);}
  .nav-link{
    position:relative;display:inline-block;padding:8px 2px;font-size:15px;font-weight:500;
    color:var(--t2);transition:color .18s var(--ease);white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
    background:var(--signal);transition:left .2s var(--ease),right .2s var(--ease);
  }
  .nav-link:hover{color:var(--t1);}
  .nav-link:hover::after{left:0;right:0;}
  .nav-link.active{color:var(--t1);font-weight:700;}
  .nav-link.active::after{left:0;right:0;}
  .search-box{
    display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
    border:1px solid var(--line);border-radius:999px;background:#fff;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-box:focus-within{border-color:var(--signal);box-shadow:0 0 0 3px rgba(255,90,31,.14);}
  .search-box input{border:0;outline:none;background:transparent;font-size:14px;width:100%;min-width:0;}
  .search-box input::placeholder{color:var(--t3);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;line-height:1.2;
    transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .btn-primary{background:var(--signal);color:#fff;box-shadow:0 8px 20px rgba(255,90,31,.22);}
  .btn-primary:hover{background:#e94b12;transform:translateY(-1px);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{background:#fff;color:var(--t1);border-color:var(--line);}
  .btn-ghost:hover{border-color:rgba(255,90,31,.35);box-shadow:var(--shadow-sm);transform:translateY(-1px);}
  .btn-ghost:active{transform:scale(.98);}
  .btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
  .btn-light:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}
  .btn-light:active{transform:scale(.98);}
  .btn-sm{padding:10px 20px;font-size:14px;}
  .link-text{color:var(--ink);font-weight:600;border-bottom:1px solid currentColor;transition:color .18s var(--ease);}
  .link-text:hover{color:var(--signal);}

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:16px;
    box-shadow:var(--shadow-sm);overflow:hidden;
    transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(255,90,31,.3);}
  .card-media{overflow:hidden;border-radius:12px;}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
  .card:hover .card-media img{transform:scale(1.04);}
  .badge{
    display:inline-flex;align-items:center;gap:5px;
    padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.6;
    background:rgba(255,90,31,.1);color:#C8410F;
  }
  .badge-mint{background:rgba(20,195,162,.12);color:#0C8F78;}
  .meta{font-size:13px;line-height:1.5;color:var(--t3);}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- Hero ---------- */
  .hero{position:relative;min-height:72vh;display:flex;align-items:flex-end;background:var(--ink);overflow:hidden;}
  @media (min-width:768px){.hero{min-height:86vh;}}
  .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;}
  .hero-mask{
    position:absolute;inset:0;
    background:linear-gradient(105deg,rgba(14,16,19,.92) 0%,rgba(14,16,19,.72) 42%,rgba(14,16,19,.34) 78%,rgba(14,16,19,.62) 100%);
  }
  .hero-inner{position:relative;z-index:2;width:100%;padding-top:96px;padding-bottom:32px;}
  @media (min-width:768px){.hero-inner{padding-top:140px;padding-bottom:44px;}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
    color:#fff;font-size:13px;font-weight:600;backdrop-filter:blur(2px);
  }
  .dot-live{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(20,195,162,.2);}
  .hero h1{
    font-size:clamp(32px,5vw,64px);line-height:1.08;font-weight:800;letter-spacing:-.02em;
    color:#fff;margin:20px 0 0;max-width:15em;
  }
  @media (min-width:1024px){.hero h1{font-size:clamp(40px,4.6vw,66px);}}
  .hero-sub{margin-top:18px;font-size:16px;line-height:1.7;color:rgba(255,255,255,.82);max-width:34em;}
  @media (min-width:768px){.hero-sub{font-size:18px;}}
  .thumb-strip{display:flex;gap:12px;overflow-x:auto;padding:18px 0 4px;scroll-snap-type:x mandatory;}
  .thumb-strip::-webkit-scrollbar{display:none;}
  .thumb-strip{scrollbar-width:none;}
  .thumb{flex:none;width:104px;scroll-snap-align:start;}
  @media (min-width:768px){.thumb{width:132px;}}
  .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;border:1px solid rgba(255,255,255,.22);}
  .thumb span{display:block;margin-top:7px;font-size:12px;color:rgba(255,255,255,.68);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .thumb:hover img{border-color:var(--signal);}

  /* ---------- 横滑 ---------- */
  .rail{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:6px;
  }
  .rail::-webkit-scrollbar{display:none;}
  .rail{scrollbar-width:none;}
  .rail-card{flex:none;width:150px;scroll-snap-align:start;}
  @media (min-width:640px){.rail-card{width:186px;}}
  @media (min-width:1024px){.rail-card{width:210px;}}
  .rail-bleed{margin-left:-20px;margin-right:-20px;padding-left:20px;padding-right:20px;}
  @media (min-width:768px){.rail-bleed{margin-left:-32px;margin-right:-32px;padding-left:32px;padding-right:32px;}}
  .arrow-btn{
    width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
    display:inline-flex;align-items:center;justify-content:center;color:var(--t2);
    transition:all .18s var(--ease);cursor:pointer;
  }
  .arrow-btn:hover{border-color:var(--signal);color:var(--signal);transform:translateY(-1px);}
  .arrow-btn:disabled{opacity:.35;cursor:not-allowed;transform:none;border-color:var(--line);color:var(--t3);}

  /* ---------- 榜单 ---------- */
  .rank-num{
    font-size:clamp(34px,4.4vw,54px);font-weight:800;line-height:1;letter-spacing:-.04em;
    color:rgba(255,90,31,.18);-webkit-text-stroke:1px rgba(255,90,31,.55);
  }
  .rank-row{display:flex;gap:16px;align-items:center;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:#fff;transition:all .2s var(--ease);}
  .rank-row:hover{transform:translateX(4px);border-color:rgba(255,90,31,.3);box-shadow:var(--shadow-sm);}

  /* ---------- 分区标题 ---------- */
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;}
  .sec-title{font-size:clamp(22px,2.6vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.25;color:var(--t1);}
  .sec-desc{margin-top:8px;font-size:15px;line-height:1.7;color:var(--t2);max-width:52em;}
  .color-chip{display:inline-block;width:26px;height:6px;border-radius:999px;background:var(--signal);}

  /* ---------- 表单 ---------- */
  .field{
    width:100%;padding:13px 16px;border-radius:12px;border:1px solid var(--line);
    background:#fff;font-size:15px;color:var(--t1);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .field::placeholder{color:var(--t3);}
  .field:focus{outline:none;border-color:var(--signal);box-shadow:0 0 0 4px rgba(255,90,31,.12);}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 0;font-size:17px;font-weight:600;color:var(--t1);transition:color .18s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--signal);}
  .faq-plus{flex:none;font-size:22px;line-height:1;color:var(--t3);transition:transform .22s var(--ease),color .22s var(--ease);}
  .faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--signal);}
  .faq-answer{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--t2);max-width:60em;}

  /* ---------- 深色区 ---------- */
  .dark-panel{background:var(--ink);color:#fff;border-radius:20px;position:relative;overflow:hidden;}
  .dark-panel::after{
    content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,90,31,.35),rgba(255,90,31,0) 68%);
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:rgba(255,255,255,.72);border-top:1px solid rgba(255,255,255,.08);}
  .footer-title{color:#fff;font-size:15px;font-weight:700;letter-spacing:.02em;margin-bottom:14px;}
  .footer-link{display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.68);transition:color .18s var(--ease);}
  .footer-link:hover{color:var(--signal);}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:80;background:#fff;
    transform:translateY(-100%);transition:transform .28s var(--ease);
    display:flex;flex-direction:column;
  }
  .drawer.open{transform:translateY(0);}
  .drawer-link{display:block;padding:16px 4px;font-size:17px;font-weight:600;color:var(--t1);border-bottom:1px solid var(--line);}
  .drawer-link.active{color:var(--signal);}
  .overlay{position:fixed;inset:0;z-index:70;background:rgba(14,16,19,.45);opacity:0;pointer-events:none;transition:opacity .24s var(--ease);}
  .overlay.show{opacity:1;pointer-events:auto;}

  /* ---------- 动效 ---------- */
  @keyframes fadeUp{from{opacity:0;transform:translateY(22px);}to{opacity:1;transform:none;}}
  .hero-in{animation:fadeUp .72s var(--ease) both;}
  .d1{animation-delay:.06s;}
  .d2{animation-delay:.14s;}
  .d3{animation-delay:.22s;}
  .d4{animation-delay:.3s;}
  .js .reveal{opacity:0;transform:translateY(26px);}
  .js .reveal.is-visible{opacity:1;transform:none;transition:opacity .62s var(--ease),transform .62s var(--ease);}

  @media (prefers-reduced-motion: reduce){
    *,*::before,*::after{animation:none!important;transition:none!important;}
    .js .reveal{opacity:1!important;transform:none!important;}
    html{scroll-behavior:auto;}
  }

  @media (max-width:767px){
    .hero{min-height:78vh;}
    body{font-size:15.5px;}
  }
  @media (max-width:519px){
    .sec-head{flex-direction:column;align-items:flex-start;gap:12px;}
    .btn{padding:12px 22px;}
  }

/* roulang page: article */
:root{
  --ink:#0E1013;
  --ink-2:#1A1D22;
  --signal:#FF5A1F;
  --signal-deep:#E84A12;
  --mint:#14C3A2;
  --paper:#F7F6F3;
  --card:#FFFFFF;
  --line:#E6E4DF;
  --t1:#17181C;
  --t2:#5A5F6B;
  --t3:#8D93A0;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-1:0 8px 24px rgba(14,16,19,.06);
  --shadow-2:0 16px 40px rgba(14,16,19,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe 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);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:6px;}
.tnum{font-variant-numeric:tabular-nums;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
.no-scrollbar{scrollbar-width:none;-ms-overflow-style:none;}
.no-scrollbar::-webkit-scrollbar{display:none;}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(14,16,19,.08);}
.nav-inner{display:flex;align-items:center;height:64px;}
@media (min-width:1024px){.nav-inner{height:72px;}}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--t1);}
@media (min-width:1024px){.logo-text{font-size:19px;}}
.logo-text .hl{color:var(--signal);}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:600;color:var(--t2);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--signal);border-radius:2px;transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--t1);}
.nav-link:hover::after{width:100%;}
.nav-link.active{color:var(--t1);}
.nav-link.active::after{width:100%;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:8px 14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{border-color:var(--signal);box-shadow:0 0 0 4px rgba(255,90,31,.12);}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--t1);
}
.search-box input::placeholder{color:var(--t3);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--signal);color:#fff;box-shadow:0 8px 20px rgba(255,90,31,.24);}
.btn-primary:hover{background:var(--signal-deep);transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,90,31,.3);}
.btn-secondary{background:#fff;color:var(--t1);border-color:var(--line);}
.btn-secondary:hover{border-color:rgba(255,90,31,.5);color:var(--signal);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.link-text{font-size:15px;font-weight:600;color:var(--t1);border-bottom:1px solid var(--line);padding-bottom:2px;}
.link-text:hover{color:var(--signal);border-color:var(--signal);}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:22px 0 0;font-size:13px;color:var(--t3);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb a{color:var(--t3);}
.crumb a:hover{color:var(--signal);}
.crumb .sep{color:#C7C4BD;}
.crumb .now{color:var(--t2);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{padding:18px 0 34px;border-bottom:1px solid var(--line);}
.article-title{
  font-size:clamp(28px,4.4vw,50px);
  line-height:1.16;font-weight:800;letter-spacing:-.02em;color:var(--t1);
  max-width:20ch;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.01em;
  background:rgba(20,195,162,.12);color:#0E8D77;
}
.badge-signal{background:rgba(255,90,31,.12);color:#C93F0C;}
.meta-row{margin-top:16px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--t3);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#D6D3CC;display:inline-block;}
.article-lead{
  margin-top:18px;max-width:66ch;font-size:16px;line-height:1.8;color:var(--t2);
}

/* ---------- 正文 ---------- */
.article-wrap{display:grid;grid-template-columns:1fr;gap:36px;padding:40px 0 8px;}
@media (min-width:1024px){
  .article-wrap{grid-template-columns:minmax(0,760px) minmax(0,300px);justify-content:space-between;gap:56px;}
}
.article-body{max-width:760px;font-size:16px;line-height:1.9;color:#2B2E35;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.15em;}
.article-body h2{
  position:relative;margin:2.1em 0 .8em;padding-left:14px;
  font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.4;letter-spacing:-.01em;color:var(--t1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;width:3px;height:1.05em;
  background:var(--signal);border-radius:3px;
}
.article-body h3{margin:1.7em 0 .6em;font-size:20px;font-weight:600;line-height:1.5;color:var(--t1);}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.45em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:0 0 .55em;}
.article-body li::marker{color:var(--signal);}
.article-body blockquote{
  margin:1.5em 0;padding:18px 22px;
  background:var(--paper);border-left:4px solid var(--signal);
  border-radius:0 12px 12px 0;color:var(--t2);font-size:15.5px;
}
.article-body a{color:var(--signal);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--signal-deep);}
.article-body img{border-radius:12px;margin:1.6em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--t3);}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-body th{background:var(--paper);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0;}
.article-body strong{font-weight:700;color:var(--t1);}

/* ---------- 侧栏 ---------- */
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-1);
}
.side-card + .side-card{margin-top:20px;}
.side-title{font-size:15px;font-weight:700;color:var(--t1);margin-bottom:12px;}
.side-link{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 0;font-size:14.5px;color:var(--t2);border-bottom:1px solid var(--line);}
.side-link:last-child{border-bottom:0;}
.side-link:hover{color:var(--signal);}
.side-link span.arw{color:var(--t3);}
.side-note{font-size:13.5px;line-height:1.75;color:var(--t2);}

/* ---------- 标签与分享 ---------- */
.post-foot{margin-top:34px;padding-top:22px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px 20px;align-items:center;justify-content:space-between;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  padding:6px 13px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:#fff;font-size:13px;color:var(--t2);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:rgba(255,90,31,.5);color:var(--signal);}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);}
.share-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.share-btn:hover{border-color:var(--signal);transform:translateY(-2px);}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,90,31,.3);}
.card-cover{overflow:hidden;aspect-ratio:16/10;background:var(--paper);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .card-cover img{transform:scale(1.04);}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{font-size:17px;font-weight:600;line-height:1.5;color:var(--t1);}
.card:hover .card-title{color:var(--signal);}
.card-text{font-size:14.5px;line-height:1.7;color:var(--t2);}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--t3);}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--radius);
  padding:56px 24px;text-align:center;
}
.empty-state p{margin-top:14px;font-size:15px;color:var(--t2);}
.empty-state .btn{margin-top:20px;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  background:linear-gradient(120deg,#0E1013 0%,#1A1D22 58%,#242830 100%);
  border-radius:24px;color:#fff;padding:40px 28px;
  position:relative;overflow:hidden;
}
@media (min-width:768px){.cta-band{padding:56px 48px;}}
.cta-band::after{
  content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,90,31,.34),transparent 68%);
}
.cta-inner{position:relative;z-index:1;display:grid;gap:24px;align-items:center;}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.2fr .8fr;gap:40px;}}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;}
.field{
  flex:1 1 200px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-pill);padding:13px 20px;color:#fff;font-size:14.5px;outline:none;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field::placeholder{color:rgba(255,255,255,.5);}
.field:focus{border-color:var(--signal);box-shadow:0 0 0 4px rgba(255,90,31,.18);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;margin-top:64px;}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:14px;}
.footer-link{display:block;padding:6px 0;font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-link:hover{color:var(--signal);}

/* ---------- 移动端抽屉 ---------- */
#mobileDrawer{
  position:fixed;inset:0;z-index:80;background:#fff;
  transform:translateY(-10px);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
  overflow-y:auto;
}
#mobileDrawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:64px;}
.drawer-link{display:block;padding:16px 4px;font-size:17px;font-weight:600;color:var(--t1);border-bottom:1px solid var(--line);}
.drawer-link:hover,.drawer-link.active{color:var(--signal);}

/* ---------- 入场动效（增强项） ---------- */
.reveal-init{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal-init.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal-init{opacity:1 !important;transform:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --ink:#0E1013;
  --ink-2:#1A1D22;
  --signal:#FF5A1F;
  --mint:#14C3A2;
  --paper:#F7F6F3;
  --card:#FFFFFF;
  --line:#E6E4DF;
  --t1:#17181C;
  --t2:#5A5F6B;
  --t3:#8D93A0;
  --shadow-1:0 8px 24px rgba(14,16,19,.06);
  --shadow-2:0 16px 40px rgba(14,16,19,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:130px}
.page-body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--t1);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
.container-site{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media(min-width:768px){.container-site{padding-left:32px;padding-right:32px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 20px rgba(14,16,19,.07)}
.nav-inner{display:flex;align-items:center;height:var(--nav-h);gap:10px}
@media(min-width:1024px){:root{--nav-h:72px}}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--t1);white-space:nowrap}
@media(min-width:1024px){.logo-text{font-size:19px}}
.logo-text .hl{color:var(--signal)}
.nav-link{
  position:relative;font-size:15px;font-weight:600;color:var(--t2);
  padding:8px 0;transition:color .18s var(--ease);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;height:2px;width:0;
  background:var(--signal);transform:translateX(-50%);
  transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--t1)}
.search-box{
  align-items:center;gap:8px;height:40px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box:focus-within{border-color:var(--signal);box-shadow:0 0 0 3px rgba(255,90,31,.16)}
.search-box input{
  border:0;outline:none;background:transparent;width:100%;
  font-size:14px;color:var(--t1);
}
.search-box input::placeholder{color:var(--t3)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;font-size:15px;
  padding:12px 24px;min-height:44px;border:1px solid transparent;
  transition:background-color .18s var(--ease),transform .18s var(--ease),
             box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-sm{padding:9px 18px;min-height:40px;font-size:14px}
.btn-lg{padding:14px 28px;font-size:16px}
.btn-primary{background:var(--signal);color:#fff;box-shadow:0 6px 18px rgba(255,90,31,.24)}
.btn-primary:hover{background:#E94E14;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,90,31,.3)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{background:#fff;color:var(--t1);border-color:var(--line)}
.btn-ghost:hover{border-color:rgba(255,90,31,.4);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-ghost:active{transform:scale(.98)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px)}
.btn-outline:active{transform:scale(.98)}
.link-more{
  font-size:15px;font-weight:600;color:var(--t1);
  border-bottom:2px solid rgba(255,90,31,.35);padding-bottom:2px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.link-more:hover{color:var(--signal);border-color:var(--signal)}

/* ---------- badges / tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  padding:4px 11px;border-radius:999px;background:rgba(255,90,31,.1);color:#C9400F;
  letter-spacing:.01em;
}
.tag-mint{background:rgba(20,195,162,.12);color:#0E8C75}
.tag-ink{background:rgba(255,255,255,.12);color:#fff}
.tag-line{background:#fff;color:var(--t2);border:1px solid var(--line)}
.dot-online{
  width:7px;height:7px;border-radius:999px;background:var(--mint);display:inline-block;
  box-shadow:0 0 0 3px rgba(20,195,162,.18);
}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);padding:20px 0 0}
.crumb a{color:var(--t3);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--signal)}
.crumb .sep{color:#C9C6BF}
.crumb .now{color:var(--t1);font-weight:600}

/* ---------- category hero ---------- */
.cat-hero{position:relative;background:var(--ink);overflow:hidden}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center right;
  opacity:.42;
}
.cat-hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,16,19,.97) 0%,rgba(14,16,19,.9) 42%,rgba(14,16,19,.42) 100%);
}
.cat-hero-inner{position:relative;z-index:2;padding:44px 0 48px;min-height:40vh;display:flex;flex-direction:column;justify-content:center}
@media(min-width:768px){.cat-hero-inner{padding:64px 0 68px;min-height:46vh}}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,54px);line-height:1.1;font-weight:800;
  letter-spacing:-.02em;color:#fff;margin-top:16px;
}
.cat-hero h1 em{font-style:normal;color:var(--signal)}
.cat-hero .lead{
  margin-top:18px;max-width:620px;font-size:15.5px;line-height:1.75;color:rgba(255,255,255,.76);
}
@media(min-width:768px){.cat-hero .lead{font-size:16.5px}}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px}
.hero-fact{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);font-variant-numeric:tabular-nums}
.hero-fact strong{color:#fff;font-size:16px;font-weight:700}

/* ---------- anchor bar ---------- */
.anchor-bar{
  position:sticky;top:var(--nav-h);z-index:50;background:#fff;
  border-bottom:1px solid var(--line);
}
.anchor-scroll{
  display:flex;gap:10px;overflow-x:auto;padding:12px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-chip{
  flex:none;font-size:14px;font-weight:600;color:var(--t2);
  padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;
  transition:all .18s var(--ease);white-space:nowrap;
}
.anchor-chip:hover{color:var(--signal);border-color:rgba(255,90,31,.4);transform:translateY(-1px)}

/* ---------- sections ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:80px 0}}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:700;letter-spacing:-.01em;line-height:1.25}
.sec-sub{margin-top:10px;font-size:15px;color:var(--t2);max-width:640px}
.bar-accent{width:44px;height:4px;border-radius:2px;background:var(--signal);margin-bottom:16px}

/* ---------- stat cards ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media(min-width:768px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}}
.stat-card{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:20px;box-shadow:var(--shadow-1);transition:all .2s var(--ease);
}
.stat-card:hover{border-color:rgba(255,90,31,.3);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.stat-num{font-size:clamp(26px,4vw,38px);font-weight:800;letter-spacing:-.02em;color:var(--t1);font-variant-numeric:tabular-nums;line-height:1.1}
.stat-num span{font-size:15px;font-weight:600;color:var(--t3);margin-left:4px}
.stat-label{margin-top:8px;font-size:13.5px;color:var(--t2)}
.stat-foot{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);font-size:12.5px;color:var(--t3)}

/* ---------- main layout with side toc ---------- */
.layout{display:grid;gap:32px;grid-template-columns:minmax(0,1fr)}
@media(min-width:1024px){.layout{grid-template-columns:220px minmax(0,1fr);gap:40px}}
.toc{display:none}
@media(min-width:1024px){
  .toc{display:block;position:sticky;top:132px;align-self:start}
}
.toc-title{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--t3);text-transform:uppercase;margin-bottom:14px}
.toc a{
  display:flex;align-items:center;gap:10px;font-size:14.5px;font-weight:600;color:var(--t2);
  padding:9px 0;border-bottom:1px solid transparent;transition:all .18s var(--ease);
}
.toc a::before{content:"";width:14px;height:1px;background:var(--line);transition:all .18s var(--ease)}
.toc a:hover{color:var(--signal)}
.toc a:hover::before{width:22px;background:var(--signal)}
.toc-note{margin-top:22px;padding:16px;border-radius:14px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--t2);line-height:1.7}

/* ---------- news cards grid ---------- */
.news-grid{display:grid;gap:20px;grid-template-columns:minmax(0,1fr)}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1280px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:16px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,90,31,.3)}
.news-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--ink-2)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,16,19,0) 45%,rgba(14,16,19,.52) 100%)}
.news-cover .tag{position:absolute;left:12px;top:12px;z-index:2}
.news-body{padding:18px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:17.5px;font-weight:700;line-height:1.45;letter-spacing:-.01em;transition:color .18s var(--ease)}
.news-card:hover .news-title{color:var(--signal)}
.news-desc{margin-top:10px;font-size:14px;line-height:1.7;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{
  margin-top:16px;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;
}
.news-foot svg{transition:transform .18s var(--ease)}
.news-card:hover .news-foot svg{transform:translateX(3px)}

/* ---------- steps ---------- */
.step-flow{position:relative;padding-left:30px}
.step-flow::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(180deg,var(--signal),rgba(255,90,31,.12))}
.step{position:relative;padding-bottom:26px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-30px;top:6px;width:16px;height:16px;border-radius:999px;
  background:#fff;border:2px solid var(--signal);
}
.step-no{font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--signal);font-variant-numeric:tabular-nums}
.step h3{font-size:18px;font-weight:600;margin-top:6px}
.step p{margin-top:8px;font-size:14.5px;color:var(--t2);line-height:1.75}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:600;color:var(--t1);transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--signal)}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--t2);
  transition:transform .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  font-size:16px;line-height:1;
}
.faq-item[open] summary{color:var(--signal)}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--signal);border-color:rgba(255,90,31,.45)}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--t2);max-width:820px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(255,90,31,.16) 0%,rgba(14,16,19,0) 52%,rgba(20,195,162,.12) 100%);
}
.cta-inner{position:relative;z-index:2;padding:56px 0;display:grid;gap:28px;align-items:center}
@media(min-width:768px){.cta-inner{padding:72px 0;grid-template-columns:1.15fr 1fr;gap:48px}}
.cta-band h2{font-size:clamp(24px,3.2vw,36px);font-weight:700;line-height:1.28;color:#fff;letter-spacing:-.01em}
.cta-band p{margin-top:14px;font-size:15.5px;line-height:1.75;color:rgba(255,255,255,.72);max-width:520px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-input{
  flex:1 1 220px;height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.07);padding:0 20px;color:#fff;font-size:14.5px;outline:none;
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.cta-input::placeholder{color:rgba(255,255,255,.45)}
.cta-input:focus{border-color:var(--signal);background:rgba(255,255,255,.1);box-shadow:0 0 0 4px rgba(255,90,31,.18)}
.cta-tip{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#fff}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.55);margin-bottom:16px}
.footer-link{
  display:block;font-size:14.5px;color:rgba(255,255,255,.72);
  padding:6px 0;transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--signal);transform:translateX(3px)}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:90;display:none}
.drawer.open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(14,16,19,.45)}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(86vw,340px);background:#fff;
  padding:20px;overflow-y:auto;box-shadow:-12px 0 32px rgba(14,16,19,.18);
  animation:drawerIn .24s var(--ease);
}
@keyframes drawerIn{from{transform:translateX(24px);opacity:.6}to{transform:translateX(0);opacity:1}}
.drawer-link{
  display:block;font-size:16px;font-weight:600;color:var(--t1);
  padding:14px 4px;border-bottom:1px solid var(--line);
}
.drawer-link.active{color:var(--signal)}

/* ---------- reveal ---------- */
.reveal{opacity:1;transform:none}
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.fade-up{animation:fadeUp .6s var(--ease) both}
.d1{animation-delay:.06s}.d2{animation-delay:.12s}.d3{animation-delay:.18s}.d4{animation-delay:.24s}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  .js .reveal{opacity:1 !important;transform:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
    --ink:#0E1013;
    --ink-2:#1A1D22;
    --signal:#FF5A1F;
    --mint:#14C3A2;
    --paper:#F7F6F3;
    --card:#FFFFFF;
    --line:#E6E4DF;
    --t1:#17181C;
    --t2:#5A5F6B;
    --t3:#8D93A0;
    --radius:16px;
    --shadow-s:0 8px 24px rgba(14,16,19,.06);
    --shadow-m:0 16px 40px rgba(14,16,19,.12);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--t1);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-radius:12px;}
  a{color:inherit;text-decoration:none;}
  button,input,textarea{font:inherit;color:inherit;}
  button{background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:6px;}
  .num{font-variant-numeric:tabular-nums;}

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

  /* ---------- 顶栏 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .24s var(--ease);
  }
  .site-header.scrolled{box-shadow:0 8px 24px rgba(14,16,19,.08);}
  .nav-inner{display:flex;align-items:center;height:64px;}
  @media (min-width:1024px){.nav-inner{height:72px;}}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;background:var(--ink);
    display:inline-flex;align-items:center;justify-content:center;flex:none;
  }
  .logo-text{font-size:18px;font-weight:800;letter-spacing:-.02em;color:var(--t1);white-space:nowrap;}
  @media (min-width:1024px){.logo-text{font-size:19px;}}
  .logo-text .hl{color:var(--signal);}
  .nav-link{
    position:relative;display:inline-block;
    font-size:15px;font-weight:600;color:var(--t2);
    padding:6px 0;transition:color .18s var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
    background:var(--signal);transform:translateX(-50%);
    transition:width .22s var(--ease);
  }
  .nav-link:hover{color:var(--t1);}
  .nav-link:hover::after,.nav-link.active::after{width:100%;}
  .nav-link.active{color:var(--t1);font-weight:700;}
  .search-box{
    align-items:center;gap:8px;height:42px;padding:0 14px;
    background:var(--paper);border:1px solid var(--line);border-radius:999px;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
  }
  .search-box:focus-within{border-color:var(--signal);box-shadow:0 0 0 3px rgba(255,90,31,.16);}
  .search-box input{
    flex:1;min-width:0;border:0;background:transparent;outline:none;
    font-size:14px;color:var(--t1);
  }
  .search-box input::placeholder{color:var(--t3);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
    transition:transform .16s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  }
  .btn-primary{background:var(--signal);color:#fff;}
  .btn-primary:hover{background:#E84E15;transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,90,31,.28);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{background:#fff;color:var(--t1);border-color:var(--line);}
  .btn-ghost:hover{border-color:rgba(255,90,31,.45);color:var(--signal);background:#fff;transform:translateY(-1px);}
  .btn-ghost:active{transform:scale(.98);}
  .btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
  .btn-light:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px);}
  .btn-sm{padding:9px 18px;font-size:14px;}

  /* ---------- 标签 / 徽章 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:999px;
    font-size:12.5px;font-weight:600;line-height:1.6;
  }
  .badge-signal{background:rgba(255,90,31,.10);color:#C8410D;}
  .badge-mint{background:rgba(20,195,162,.12);color:#0B8B74;}
  .badge-dark{background:rgba(255,255,255,.12);color:#fff;}
  .dot-live{
    width:7px;height:7px;border-radius:50%;background:var(--mint);flex:none;
    box-shadow:0 0 0 3px rgba(20,195,162,.18);
  }

  /* ---------- 面包屑 ---------- */
  .crumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--t3);padding:18px 0 0;
  }
  .crumb a:hover{color:var(--signal);}
  .crumb .sep{opacity:.6;}

  /* ---------- 分类 Hero ---------- */
  .cat-hero{
    background:var(--ink);
    color:#fff;
    border-radius:24px;
    overflow:hidden;
    position:relative;
  }
  .cat-hero-grid{display:grid;grid-template-columns:1fr;}
  @media (min-width:1024px){.cat-hero-grid{grid-template-columns:1.05fr .95fr;}}
  .cat-hero-media{position:relative;min-height:220px;}
  @media (min-width:1024px){.cat-hero-media{min-height:100%;}}
  .cat-hero-media img{
    width:100%;height:100%;min-height:220px;object-fit:cover;border-radius:0;
    opacity:.72;
  }
  .cat-hero-media::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,var(--ink) 0%,rgba(14,16,19,.35) 45%,rgba(14,16,19,.05) 100%);
  }
  @media (max-width:1023px){
    .cat-hero-media::after{background:linear-gradient(180deg,rgba(14,16,19,.20) 0%,var(--ink) 88%);}
  }

  /* ---------- 吸顶锚点条 ---------- */
  .anchor-bar{
    position:sticky;top:64px;z-index:40;
    background:rgba(247,246,243,.94);
    backdrop-filter:saturate(150%) blur(6px);
    border-bottom:1px solid var(--line);
    margin-top:28px;
  }
  @media (min-width:1024px){.anchor-bar{top:72px;}}
  .anchor-scroll{
    display:flex;gap:10px;overflow-x:auto;
    padding:12px 0;
    scrollbar-width:none;-ms-overflow-style:none;
  }
  .anchor-scroll::-webkit-scrollbar{display:none;}
  .anchor-chip{
    flex:none;padding:8px 16px;border-radius:999px;
    border:1px solid var(--line);background:#fff;
    font-size:14px;font-weight:600;color:var(--t2);
    transition:all .18s var(--ease);white-space:nowrap;
  }
  .anchor-chip:hover{border-color:rgba(255,90,31,.45);color:var(--signal);}
  .anchor-chip.on{background:var(--ink);border-color:var(--ink);color:#fff;}

  /* ---------- 步骤时间线 ---------- */
  .timeline{position:relative;padding-left:46px;}
  .timeline::before{
    content:"";position:absolute;left:13px;top:10px;bottom:10px;width:2px;
    background:linear-gradient(180deg,var(--signal) 0%,rgba(255,90,31,.35) 55%,rgba(255,90,31,.08) 100%);
  }
  .tl-item{position:relative;padding-bottom:34px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-dot{
    position:absolute;left:-46px;top:4px;
    width:28px;height:28px;border-radius:50%;
    background:#fff;border:3px solid var(--signal);
    display:flex;align-items:center;justify-content:center;
  }
  .tl-dot span{width:8px;height:8px;border-radius:50%;background:var(--signal);}
  .tl-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:22px 22px 20px;box-shadow:var(--shadow-s);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(255,90,31,.30);}
  .tl-index{
    font-size:34px;font-weight:800;line-height:1;color:var(--signal);
    font-variant-numeric:tabular-nums;letter-spacing:-.03em;
  }

  /* ---------- 通用卡片 ---------- */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;box-shadow:var(--shadow-s);
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
    display:flex;flex-direction:column;height:100%;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(255,90,31,.30);}
  .card-media{overflow:hidden;border-radius:0;}
  .card-media img{
    width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;
    transition:transform .3s var(--ease);
  }
  .card:hover .card-media img{transform:scale(1.04);}
  .card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .card-title{font-size:18px;font-weight:600;letter-spacing:-.01em;line-height:1.45;}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

  /* ---------- 对比卡 ---------- */
  .diff-row{
    display:grid;gap:16px;
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:20px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  @media (min-width:768px){.diff-row{grid-template-columns:1fr 1fr;gap:24px;}}
  .diff-row:hover{border-color:rgba(255,90,31,.30);box-shadow:var(--shadow-s);}
  .diff-col-title{font-size:15px;font-weight:700;color:var(--t1);display:flex;align-items:center;gap:8px;}
  .diff-col p{font-size:15px;line-height:1.75;color:var(--t2);margin-top:8px;}

  /* ---------- 规格/数据块 ---------- */
  .stat{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:22px;transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .stat:hover{transform:translateY(-4px);border-color:rgba(255,90,31,.30);box-shadow:var(--shadow-s);}
  .stat-num{font-size:40px;font-weight:800;line-height:1;color:var(--ink);font-variant-numeric:tabular-nums;letter-spacing:-.03em;}
  .stat-num em{font-style:normal;font-size:16px;font-weight:600;color:var(--t3);margin-left:6px;}
  .stat-label{font-size:14px;color:var(--t2);margin-top:10px;line-height:1.7;}
  .stat-top{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .mini-bars{display:flex;align-items:flex-end;gap:3px;height:26px;}
  .mini-bars i{display:block;width:5px;border-radius:3px;background:rgba(20,195,162,.55);}
  .mini-bars i:nth-child(1){height:40%;}
  .mini-bars i:nth-child(2){height:70%;}
  .mini-bars i:nth-child(3){height:52%;}
  .mini-bars i:nth-child(4){height:90%;background:var(--mint);}

  /* ---------- 面板 ---------- */
  .panel{
    background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius);padding:24px;
  }
  .panel-dark{
    background:var(--ink);color:#fff;border-radius:24px;
    border:1px solid rgba(255,255,255,.08);
  }
  .spec-list li{
    display:flex;gap:12px;align-items:flex-start;
    padding:12px 0;border-bottom:1px solid var(--line);
    font-size:15px;line-height:1.7;color:var(--t2);
  }
  .spec-list li:last-child{border-bottom:0;padding-bottom:0;}
  .spec-list svg{flex:none;margin-top:5px;}

  /* ---------- FAQ ---------- */
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-child{border-top:1px solid var(--line);}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:20px 2px;cursor:pointer;list-style:none;
    font-size:17px;font-weight:600;color:var(--t1);line-height:1.5;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-q .plus{
    flex:none;color:var(--t2);transition:transform .22s var(--ease),color .22s var(--ease);
  }
  .faq-item[open] .plus{transform:rotate(45deg);color:var(--signal);}
  .faq-a{font-size:15px;line-height:1.85;color:var(--t2);padding:0 2px 22px;max-width:900px;}

  /* ---------- 订阅表单 ---------- */
  .sub-form{display:flex;flex-direction:column;gap:12px;width:100%;}
  @media (min-width:640px){.sub-form{flex-direction:row;align-items:center;}}
  .input-line{
    flex:1;min-width:0;height:50px;padding:0 18px;border-radius:999px;
    background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.22);
    color:#fff;font-size:15px;outline:none;
    transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
  }
  .input-line::placeholder{color:rgba(255,255,255,.45);}
  .input-line:focus{border-color:var(--signal);background:rgba(255,255,255,.10);box-shadow:0 0 0 4px rgba(255,90,31,.20);}
  .form-tip{font-size:13px;color:rgba(255,255,255,.55);}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#fff;margin-top:72px;}
  .footer-title{
    font-size:13px;letter-spacing:.14em;font-weight:700;
    color:rgba(255,255,255,.50);margin-bottom:16px;
  }
  .footer-link{
    display:block;font-size:14.5px;color:rgba(255,255,255,.72);
    padding:5px 0;transition:color .18s var(--ease),transform .18s var(--ease);
  }
  .footer-link:hover{color:var(--signal);transform:translateX(2px);}

  /* ---------- 移动抽屉 ---------- */
  .drawer{
    position:fixed;inset:0;z-index:80;
    visibility:hidden;pointer-events:none;
  }
  .drawer.open{visibility:visible;pointer-events:auto;}
  .drawer-mask{
    position:absolute;inset:0;background:rgba(14,16,19,.45);
    opacity:0;transition:opacity .24s var(--ease);
  }
  .drawer.open .drawer-mask{opacity:1;}
  .drawer-panel{
    position:absolute;top:0;right:0;height:100%;
    width:min(88vw,360px);background:#fff;
    padding:20px;overflow-y:auto;
    transform:translateX(102%);
    transition:transform .26s var(--ease);
    box-shadow:-16px 0 40px rgba(14,16,19,.18);
    display:flex;flex-direction:column;gap:18px;
  }
  .drawer.open .drawer-panel{transform:translateX(0);}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 14px;border-radius:14px;background:var(--paper);
    border:1px solid var(--line);font-size:15.5px;font-weight:600;color:var(--t1);
    transition:border-color .18s var(--ease),color .18s var(--ease);
    min-height:48px;
  }
  .drawer-link:hover,.drawer-link.on{border-color:rgba(255,90,31,.5);color:var(--signal);}

  /* ---------- 动效 ---------- */
  @keyframes fadeUp{from{opacity:0;transform:translateY(18px);}to{opacity:1;transform:none;}}
  .reveal.is-in{animation:fadeUp .5s var(--ease) both;}
  .hero-line{animation:fadeUp .6s var(--ease) both;}
  .hero-line.d1{animation-delay:.06s;}
  .hero-line.d2{animation-delay:.14s;}
  .hero-line.d3{animation-delay:.22s;}
  .hero-line.d4{animation-delay:.30s;}

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

/* roulang page: category3 */
:root{
  --ink:#0E1013;
  --ink-2:#1A1D22;
  --signal:#FF5A1F;
  --mint:#14C3A2;
  --paper:#F7F6F3;
  --card:#FFFFFF;
  --line:#E6E4DF;
  --t1:#17181C;
  --t2:#5A5F6B;
  --t3:#8D93A0;
  --radius:16px;
  --shadow-1:0 8px 24px rgba(14,16,19,.06);
  --shadow-2:0 16px 40px rgba(14,16,19,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--paper);
  color:var(--t1);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:6px}
.container-site{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container-site{padding-left:32px;padding-right:32px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:0 8px 24px rgba(14,16,19,.07)}
.nav-inner{display:flex;align-items:center;height:64px;gap:14px}
@media (min-width:1024px){.nav-inner{height:72px}}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.logo-text .hl{color:var(--signal)}
.nav-link{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--t2);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--signal);transform:translateX(-50%);
  transition:width .2s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--ink);font-weight:700}
.nav-link.active::after{width:100%}
.search-box{
  display:flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-box:focus-within{border-color:var(--signal);box-shadow:0 0 0 2px rgba(255,90,31,.18)}
.search-box input{
  border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--t1);
}
.search-box input::placeholder{color:var(--t3)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:999px;
  padding:13px 26px;font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;transition:background-color .18s var(--ease),color .18s var(--ease),
    border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-primary{background:var(--signal);color:#fff}
.btn-primary:hover{background:#E84A10;transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,90,31,.28)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:rgba(255,90,31,.45);color:var(--signal)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-solid-light{background:#fff;color:var(--ink)}
.btn-solid-light:hover{background:#F0EEE9;transform:translateY(-1px)}
.btn:focus-visible{outline:2px solid var(--signal);outline-offset:2px}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;top:0;right:0;z-index:60;height:100%;
  width:min(86vw,360px);background:#fff;
  transform:translateX(102%);
  transition:transform .24s var(--ease);
  display:flex;flex-direction:column;
  padding:20px;overflow-y:auto;
  box-shadow:-16px 0 40px rgba(14,16,19,.16);
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;z-index:55;background:rgba(14,16,19,.5);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer-link{
  display:block;padding:13px 4px;font-size:16px;font-weight:500;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.drawer-link.active{color:var(--signal);font-weight:700}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);padding:12px 0}
.crumb a{color:var(--t3);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--signal)}
.crumb .sep{color:#C9C6BF}
.crumb .now{color:var(--t1);font-weight:600}

/* ---------- 分类 Hero ---------- */
.cat-hero{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(255,90,31,.16),rgba(20,195,162,.10) 55%,rgba(14,16,19,0) 78%);
  pointer-events:none;
}
.cat-hero-grid{
  position:relative;display:grid;gap:32px;
  padding:40px 0 48px;align-items:center;
}
@media (min-width:1024px){
  .cat-hero-grid{grid-template-columns:1.02fr .98fr;gap:52px;padding:56px 0 62px;min-height:44vh}
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.20);
  font-size:13px;color:rgba(255,255,255,.9);
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);flex:none}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.1;
  font-weight:800;
  letter-spacing:-.02em;
  margin-top:18px;
}
.cat-hero h1 .accent{color:var(--signal)}
.cat-hero .hero-sub{
  margin-top:16px;max-width:560px;
  font-size:16px;line-height:1.85;color:rgba(255,255,255,.78);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:32px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
}
.hero-stats .num{
  font-size:26px;font-weight:800;letter-spacing:-.01em;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats .num .u{font-size:14px;font-weight:600;color:var(--signal);margin-left:2px}
.hero-stats .lab{font-size:13px;color:rgba(255,255,255,.6);margin-top:2px}
.cat-hero-media{position:relative}
.cat-hero-media img{
  width:100%;height:260px;object-fit:cover;
  border-radius:20px;border:1px solid rgba(255,255,255,.14);
}
@media (min-width:1024px){.cat-hero-media img{height:352px}}
.cat-hero-media .float-card{
  position:absolute;left:16px;bottom:16px;right:auto;
  background:rgba(14,16,19,.82);
  border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:11px 15px;
  font-size:13px;color:rgba(255,255,255,.88);
  display:flex;align-items:center;gap:8px;
}
.cat-hero-media .float-card .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);flex:none}

/* ---------- 锚点条 ---------- */
.anchor-bar{
  position:sticky;top:64px;z-index:40;background:#fff;
  border-bottom:1px solid var(--line);
}
@media (min-width:1024px){.anchor-bar{top:72px}}
.anchor-scroll{
  display:flex;gap:8px;overflow-x:auto;padding:12px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-chip{
  flex:none;padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--t2);
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.anchor-chip:hover{border-color:rgba(255,90,31,.45);color:var(--signal);background:#FFF7F3}

/* ---------- 板块通用 ---------- */
.section{padding:48px 0}
@media (min-width:768px){.section{padding:72px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--signal);
}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:2px;background:var(--signal);display:inline-block}
h2.sec-title{
  font-size:clamp(26px,3.2vw,38px);line-height:1.2;font-weight:700;letter-spacing:-.01em;
  margin-top:12px;color:var(--t1);
}
.sec-desc{margin-top:12px;font-size:15px;line-height:1.75;color:var(--t2);max-width:680px}

/* ---------- 图文交错 ---------- */
.flow-row{display:grid;gap:26px;align-items:center;padding:26px 0}
@media (min-width:1024px){
  .flow-row{grid-template-columns:1fr 1fr;gap:56px;padding:38px 0}
  .flow-row.reverse .flow-media{order:-1}
}
.flow-media img{
  width:100%;height:250px;object-fit:cover;border-radius:18px;
  box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
@media (min-width:1024px){.flow-media img{height:360px}}
.flow-media:hover img{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.flow-num{
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--signal);
  font-variant-numeric:tabular-nums;
}
.flow-row h3{font-size:clamp(20px,2.2vw,26px);font-weight:700;line-height:1.35;margin-top:12px;color:var(--t1)}
.flow-row p{margin-top:14px;font-size:16px;line-height:1.85;color:var(--t2)}
.point-card{
  margin-top:20px;background:#fff;border:1px solid var(--line);
  border-left:3px solid var(--signal);
  border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-1);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.point-card:hover{border-color:rgba(255,90,31,.3);border-left-color:var(--signal);box-shadow:var(--shadow-2)}
.point-card .pc-title{font-size:14px;font-weight:700;color:var(--t1);display:flex;align-items:center;gap:8px}
.point-card ul{margin-top:10px;display:grid;gap:8px}
.point-card li{
  position:relative;padding-left:16px;font-size:14px;line-height:1.7;color:var(--t2);
  font-variant-numeric:tabular-nums;
}
.point-card li::before{
  content:"";position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;background:var(--mint);
}

/* ---------- 要点卡三列 ---------- */
.card-grid{display:grid;gap:20px}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,90,31,.3)}
.info-card .ic-index{
  font-size:34px;font-weight:800;line-height:1;color:var(--signal);
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.info-card h3{font-size:19px;font-weight:600;margin-top:14px;line-height:1.4}
.info-card p{margin-top:10px;font-size:15px;line-height:1.75;color:var(--t2)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:12.5px;font-weight:600;
  background:rgba(20,195,162,.10);color:#0E9E83;
}
.badge-signal{background:rgba(255,90,31,.10);color:#D8450F}

/* ---------- 分区标签墙 ---------- */
.zone-panel{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:26px;box-shadow:var(--shadow-1);
}
@media (min-width:768px){.zone-panel{padding:34px}}
.zone-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.zone-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);font-size:14px;color:var(--t2);
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.zone-tag:hover{border-color:rgba(255,90,31,.4);color:var(--signal);background:#FFF7F3}
.zone-tag .cnt{font-size:12.5px;color:var(--t3);font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--t1);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--signal)}
.faq-plus{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);color:var(--t2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;line-height:1;
  transition:transform .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.faq-item[open] .faq-plus{transform:rotate(45deg);color:var(--signal);border-color:rgba(255,90,31,.45)}
.faq-body{
  padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--t2);max-width:820px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
  padding:56px 0;
}
@media (min-width:768px){.cta-band{padding:80px 0}}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(100deg,rgba(255,90,31,.20),rgba(14,16,19,0) 62%);
}
.cta-inner{position:relative;display:grid;gap:30px;align-items:center}
@media (min-width:1024px){.cta-inner{grid-template-columns:1.05fr .95fr;gap:56px}}
.cta-inner h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.cta-inner p{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.72);max-width:560px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form input{
  flex:1 1 220px;min-width:0;height:50px;padding:0 18px;
  border-radius:999px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.08);color:#fff;font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus{outline:none;border-color:var(--signal);box-shadow:0 0 0 4px rgba(255,90,31,.18)}
.form-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#fff}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-link{
  display:block;font-size:14px;color:rgba(255,255,255,.65);
  padding:5px 0;transition:color .18s var(--ease);
}
.footer-link:hover{color:var(--signal)}
.border-white-8{border-color:rgba(255,255,255,.08)}

/* ---------- 动效 ---------- */
.fade-up{animation:fadeUp .5s var(--ease) both}
.fade-up-2{animation:fadeUp .5s var(--ease) .07s both}
.fade-up-3{animation:fadeUp .5s var(--ease) .14s both}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}