/* roulang page: index */
:root{
    --ink-900:#0B1413; --ink-700:#161E1D; --ink-500:#3D4746;
    --brand-700:#0B4A42; --brand-600:#0F5C52;
    --accent-400:#C6F24E; --accent-600:#FF6A3D;
    --paper:#F7F6F2; --surface:#FFFFFF; --line:#E3E1D9; --muted:#6B7472;
    --radius-btn:12px; --radius-card:16px; --radius-block:24px;
    --shadow-card:0 1px 2px rgba(11,20,19,.04), 0 8px 24px -16px rgba(11,20,19,.18);
    --shadow-lift:0 2px 8px rgba(11,20,19,.06), 0 20px 40px -22px rgba(11,20,19,.3);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--paper);color:var(--ink-500);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink-700);letter-spacing:-.02em;font-weight:700}
  h1{line-height:1.14}
  h2{line-height:1.22}
  p{margin:0}
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
  input,select,textarea{font:inherit;color:inherit}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent-400);outline-offset:2px;border-radius:6px}

  .shell{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media(min-width:768px){.shell{padding-left:32px;padding-right:32px}}
  @media(min-width:1024px){.shell{padding-left:40px;padding-right:40px}}

  .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}}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border:1px solid var(--brand-600);border-radius:999px;
    font-size:12px;letter-spacing:.08em;color:var(--brand-700);background:transparent
  }
  .eyebrow i{width:6px;height:6px;border-radius:999px;background:var(--accent-400);display:block}

  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
  .sec-title{font-size:clamp(24px,2.6vw,34px)}
  .sec-desc{margin-top:10px;font-size:15px;color:var(--muted);max-width:640px}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-700)}
  .link-more svg{transition:transform .22s var(--ease)}
  .link-more:hover svg{transform:translateX(4px)}

  /* ---------- nav ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:transparent;transition:background .32s var(--ease),box-shadow .32s var(--ease);
  }
  .nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:height .32s var(--ease)}
  .site-header.is-scrolled{background:rgba(247,246,242,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
  .site-header.is-scrolled .nav-inner{height:60px}
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--ink-900);letter-spacing:-.02em}
  .brand-mark{width:30px;height:30px;flex:0 0 auto}
  .brand-text{display:flex;flex-direction:column;line-height:1.08}
  .brand-text b{font-size:16px;font-weight:800}
  .brand-text span{font-size:11px;letter-spacing:.16em;color:var(--brand-600);font-weight:600}
  .nav-links{display:none;align-items:center;gap:28px}
  @media(min-width:1024px){.nav-links{display:flex}}
  .nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--ink-700);padding:4px 0}
  .nav-links a::after{
    content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-600);
    transition:width .28s var(--ease)
  }
  .nav-links a:hover::after,.nav-links a.is-active::after{width:100%}
  .nav-links a.is-active{color:var(--brand-700);font-weight:600}
  .nav-actions{display:flex;align-items:center;gap:10px}
  .nav-search{position:relative;display:none}
  @media(min-width:768px){.nav-search{display:block}}
  .icon-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid transparent;transition:background .2s var(--ease),border-color .2s var(--ease)}
  .icon-btn:hover{background:#fff;border-color:var(--line)}
  .search-panel{
    position:absolute;right:44px;top:50%;transform:translateY(-50%) scale(.96);
    width:240px;opacity:0;pointer-events:none;transition:opacity .22s var(--ease),transform .22s var(--ease)
  }
  .search-panel.is-open{opacity:1;pointer-events:auto;transform:translateY(-50%) scale(1)}
  .search-panel input{
    width:100%;height:40px;border-radius:999px;border:1px solid var(--line);background:#fff;
    padding:0 16px;font-size:14px;outline:none
  }
  .search-panel input:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,92,82,.12)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
    transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)
  }
  .btn-primary{background:var(--brand-600);color:#fff}
  .btn-primary:hover{background:var(--ink-900);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{border:1px solid var(--ink-700);color:var(--ink-700);background:transparent}
  .btn-ghost:hover{background:var(--ink-900);color:#fff;border-color:var(--ink-900);transform:translateY(-1px)}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
  .btn-block{width:100%}
  .btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}

  .burger{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);background:#fff}
  @media(min-width:1024px){.burger{display:none}}

  .drawer{
    position:fixed;inset:0 0 0 auto;width:min(86vw,360px);background:var(--surface);z-index:80;
    transform:translateX(100%);transition:transform .32s var(--ease);display:flex;flex-direction:column;
    box-shadow:-24px 0 60px -30px rgba(11,20,19,.4)
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer a.drawer-link{height:48px;display:flex;align-items:center;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;color:var(--ink-700)}
  .drawer a.drawer-link.is-active{color:var(--brand-700);font-weight:600}
  .scrim{position:fixed;inset:0;background:rgba(11,20,19,.42);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:70}
  .scrim.is-open{opacity:1;pointer-events:auto}

  /* ---------- hero ---------- */
  .hero{padding-top:118px;padding-bottom:48px}
  @media(min-width:768px){.hero{padding-top:148px;padding-bottom:64px}}
  @media(min-width:1024px){.hero{padding-top:172px;padding-bottom:88px}}
  .hero-title{font-size:clamp(34px,5.2vw,62px);font-weight:800;line-height:1.1;letter-spacing:-.02em;color:var(--ink-900);margin-top:18px}
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.75;color:var(--ink-500);max-width:520px}
  .hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;font-size:14px;color:var(--muted)}
  .hero-meta span{display:inline-flex;align-items:center;gap:6px}
  .hero-meta .bar{width:1px;height:14px;background:var(--line)}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .trust{margin-top:26px;font-size:13px;color:var(--muted);line-height:1.9}
  .trust b{color:var(--ink-700);font-weight:600}

  .hero-figure{position:relative;border-radius:var(--radius-block);overflow:hidden;aspect-ratio:4/5;background:var(--line)}
  .hero-figure img{width:100%;height:100%;object-fit:cover;transform:scale(1.01);transition:transform .6s var(--ease)}
  .hero-figure:hover img{transform:scale(1.05)}
  .hero-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,20,19,0) 42%,rgba(11,20,19,.42) 100%)}
  .fig-card{
    position:absolute;top:18px;right:18px;z-index:2;background:var(--surface);border-radius:14px;
    padding:10px 14px;box-shadow:var(--shadow-card);border:1px solid var(--line)
  }
  .fig-card b{display:block;font-size:13px;color:var(--ink-900);font-weight:700}
  .fig-card span{font-size:12px;color:var(--muted)}
  .fig-strip{
    position:absolute;left:0;right:0;bottom:0;z-index:2;background:rgba(15,92,82,.9);color:#fff;
    padding:12px 18px;font-size:14px;display:flex;align-items:center;gap:8px
  }
  .fig-strip i{width:7px;height:7px;border-radius:999px;background:var(--accent-400);display:block;flex:0 0 auto}

  /* ---------- stats ---------- */
  .stat-band{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  @media(min-width:1024px){.stat-band{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .stat-cell{padding:24px 4px}
  @media(min-width:1024px){.stat-cell{padding:32px 24px;border-right:1px solid var(--line)}.stat-cell:last-child{border-right:0}}
  .stat-num{font-family:"Space Grotesk",Inter,"PingFang SC",system-ui,sans-serif;font-size:clamp(24px,3vw,36px);font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
  .stat-label{margin-top:6px;font-size:13px;color:var(--muted)}

  /* ---------- cards ---------- */
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .32s var(--ease),box-shadow .32s var(--ease);overflow:hidden;display:flex;flex-direction:column}
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
  .card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EFEDE6}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
  .card:hover .card-media img{transform:scale(1.04)}
  .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{font-size:19px;line-height:1.42}
  .card-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
  .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
  .badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;letter-spacing:.04em;background:rgba(15,92,82,.08);color:var(--brand-700);border:1px solid rgba(15,92,82,.16);white-space:nowrap}
  .badge-warn{background:rgba(255,106,61,.1);color:#C1461D;border-color:rgba(255,106,61,.3)}

  /* ---------- numbered highlights ---------- */
  .num-list{border-top:1px solid var(--line)}
  .num-item{display:grid;grid-template-columns:1fr;gap:8px;padding:24px 0;border-bottom:1px solid var(--line)}
  @media(min-width:768px){.num-item{grid-template-columns:88px 220px 1fr;gap:24px;align-items:baseline;padding:28px 0}}
  .num-item .idx{font-family:"Space Grotesk",Inter,system-ui,sans-serif;font-size:20px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums}
  .num-item h3{font-size:18px}
  .num-item p{font-size:15px;color:var(--muted)}

  /* ---------- flow ---------- */
  .flow{display:grid;gap:24px;grid-template-columns:1fr}
  @media(min-width:640px){.flow{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(min-width:1024px){.flow{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}}
  .flow-step{position:relative;padding-top:22px;border-top:2px solid var(--line)}
  .flow-step::before{content:"";position:absolute;top:-2px;left:0;width:44px;height:2px;background:var(--brand-600)}
  .flow-step b{font-family:"Space Grotesk",Inter,system-ui,sans-serif;font-size:13px;letter-spacing:.12em;color:var(--brand-600)}
  .flow-step h3{margin-top:8px;font-size:18px}
  .flow-step p{margin-top:8px;font-size:14.5px;color:var(--muted)}

  /* ---------- news list (CMS) ---------- */
  .news-list{border-top:1px solid var(--line)}
  .news-item{display:grid;grid-template-columns:1fr;gap:0;border-bottom:1px solid var(--line);padding:20px 0;transition:background .25s var(--ease)}
  @media(min-width:768px){.news-item{grid-template-columns:1fr 220px;gap:28px;align-items:center;padding:24px 12px}}
  .news-item:hover{background:var(--paper)}
  .news-item h3{font-size:18px;line-height:1.45;transition:color .2s var(--ease)}
  .news-item:hover h3{color:var(--brand-700)}
  .news-item p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75}
  .news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:10px;font-size:13px;color:var(--muted)}
  .news-thumb{aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#EFEDE6;order:-1;margin-bottom:14px}
  @media(min-width:768px){.news-thumb{order:0;margin-bottom:0}}
  .news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
  .news-item:hover .news-thumb img{transform:scale(1.04)}
  .empty-state{min-height:220px;border:1px dashed var(--line);border-radius:var(--radius-card);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--muted);background:var(--surface)}

  /* ---------- voices ---------- */
  .voice-grid{display:grid;gap:20px;grid-template-columns:1fr}
  @media(min-width:768px){.voice-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .voice{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-card)}
  .voice p{font-size:15px;color:var(--ink-500)}
  .voice .who{margin-top:18px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
  .avatar{width:38px;height:38px;border-radius:999px;background:var(--brand-700);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}
  .quote-mark{color:var(--accent-400);font-size:28px;line-height:1;font-weight:800}

  /* ---------- faq ---------- */
  .faq{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;padding:22px 4px;font-size:18px;font-weight:600;color:var(--ink-700);transition:color .2s var(--ease)}
  .faq-q:hover{color:var(--brand-700)}
  .faq-sign{position:relative;width:16px;height:16px;flex:0 0 auto;transition:transform .22s var(--ease)}
  .faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px}
  .faq-sign::before{left:0;top:7px;width:16px;height:2px}
  .faq-sign::after{left:7px;top:0;width:2px;height:16px;transition:opacity .22s var(--ease)}
  .faq-item.is-open .faq-sign{transform:rotate(90deg)}
  .faq-item.is-open .faq-sign::after{opacity:0}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
  .faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--muted);max-width:720px}

  /* ---------- form ---------- */
  .form-card{background:var(--surface);border-radius:var(--radius-block);padding:26px 22px}
  @media(min-width:768px){.form-card{padding:32px 30px}}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:7px}
  .field .req{color:var(--accent-600)}
  .field input,.field select,.field textarea{
    width:100%;height:48px;padding:0 14px;border-radius:var(--radius-btn);border:1px solid var(--line);
    background:#fff;font-size:15px;outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
  }
  .field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:96px;line-height:1.7}
  .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,92,82,.12)}
  .check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted);line-height:1.7}
  .check input{width:18px;height:18px;flex:0 0 auto;margin-top:2px;accent-color:var(--brand-600);border-radius:4px}
  .form-note{margin-top:14px;font-size:13px;color:var(--muted)}
  .form-success{display:none;align-items:center;gap:10px;padding:16px;border-radius:var(--radius-btn);background:rgba(198,242,78,.22);border:1px solid rgba(15,92,82,.2);color:var(--brand-700);font-size:14.5px;font-weight:600}
  .form-success.is-visible{display:flex}
  .aside-notes li{display:flex;gap:10px;font-size:14px;color:rgba(242,244,241,.82);padding:10px 0}
  .aside-notes li::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--accent-400);margin-top:11px;flex:0 0 auto}

  /* ---------- cta band ---------- */
  .ink-band{background:var(--ink-900);color:#F2F4F1;border-radius:var(--radius-block);padding:32px 22px}
  @media(min-width:768px){.ink-band{padding:48px 40px}}
  .ink-band h2{color:#F2F4F1}
  .ink-band p{color:rgba(242,244,241,.78)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink-900);color:#F2F4F1;margin-top:64px}
  .site-footer h4{color:#F2F4F1;font-size:15px;margin-bottom:16px}
  .foot-link{display:block;font-size:14px;color:rgba(242,244,241,.72);padding:6px 0;transition:color .2s var(--ease)}
  .foot-link:hover{color:var(--accent-400);text-decoration:underline;text-underline-offset:3px}
  .foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:20px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(242,244,241,.6)}

  .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}

  @media (prefers-reduced-motion: reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }

/* roulang page: article */
:root{
  --ink-900:#0B1413;
  --ink-700:#161E1D;
  --ink-500:#3D4746;
  --brand-700:#0B4A42;
  --brand-600:#0F5C52;
  --accent-400:#C6F24E;
  --accent-600:#FF6A3D;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D9;
  --muted:#6B7472;
  --radius-btn:12px;
  --radius-card:16px;
  --radius-lg:24px;
  --shadow-card:0 1px 2px rgba(11,20,19,.04), 0 8px 24px -16px rgba(11,20,19,.18);
  --shadow-card-hover:0 2px 4px rgba(11,20,19,.05), 0 18px 40px -20px rgba(11,20,19,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-500);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none}
a:hover{color:var(--brand-700)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--accent-400);outline-offset:2px}

.shell{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.shell{padding-left:32px;padding-right:32px}}
@media (min-width:1024px){.shell{padding-left:40px;padding-right:40px}}

.section{padding:96px 0}
@media (max-width:1024px){.section{padding:72px 0}}
@media (max-width:640px){.section{padding:56px 0}}

.section-head{max-width:640px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand-600);
  text-transform:uppercase;margin-bottom:14px;
}
.section-head .eyebrow::before{content:'';width:18px;height:2px;background:var(--accent-400);border-radius:2px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:800}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);max-width:560px}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .28s var(--ease),background .28s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(247,246,242,.96)}
.header-inner{
  display:flex;align-items:center;gap:24px;height:72px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:30px;height:30px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text b{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.brand-text span{font-size:11px;font-weight:700;color:var(--brand-600);letter-spacing:.14em}

.nav-links{display:none;align-items:center;gap:28px;margin-left:12px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;font-weight:500;color:var(--ink-700);
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:'';position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--accent-400);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--brand-600)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink-900);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1);background:var(--brand-600)}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;position:relative}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-700);display:inline-flex;
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-600);color:var(--brand-600)}
.search-pop{
  position:absolute;top:50%;right:52px;transform:translateY(-50%) scaleX(.9);
  transform-origin:right center;opacity:0;pointer-events:none;
  width:240px;transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.search-pop.is-open{opacity:1;pointer-events:auto;transform:translateY(-50%) scaleX(1)}
.search-pop input{
  width:100%;height:40px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);padding:0 16px;font-size:14px;color:var(--ink-700);
}
.search-pop input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(15,92,82,.12)}
.menu-btn{display:inline-flex}
@media (min-width:1024px){.menu-btn{display:none}}
@media (max-width:520px){.header-actions .btn-cta{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:rgba(11,20,19,.28)}
.btn-ghost:hover{background:var(--ink-900);color:#fff;border-color:var(--ink-900)}
.btn-light{background:var(--surface);color:var(--ink-900);border-color:var(--line)}
.btn-light:hover{background:var(--accent-400);border-color:var(--accent-400);color:var(--ink-900)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-arrow::after{content:'→';font-size:15px;transition:transform .2s var(--ease)}
.btn-arrow:hover::after{transform:translateX(4px)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,20,19,.42);z-index:80;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:90;
  background:var(--surface);box-shadow:-24px 0 60px -30px rgba(11,20,19,.4);
  transform:translateX(102%);transition:transform .32s var(--ease);
  display:flex;flex-direction:column;padding:24px 22px 28px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-links{display:flex;flex-direction:column}
.drawer-links a{
  display:flex;align-items:center;height:48px;font-size:16px;font-weight:500;
  color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer-links a:hover{color:var(--brand-600)}
.drawer-foot{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:12px}
.drawer-foot p{font-size:13px;color:var(--muted);line-height:1.9}

/* ---------- article head ---------- */
.page-hero{position:relative;padding:44px 0 0;overflow:hidden}
.page-hero::before{
  content:'';position:absolute;right:-160px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(198,242,78,.34),rgba(198,242,78,0) 68%);
  pointer-events:none;
}
.breadcrumb{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:22px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:#C9C7BF}
.breadcrumb .current{color:var(--ink-700);font-weight:600}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;
  letter-spacing:.06em;background:rgba(15,92,82,.10);color:var(--brand-700);
  border:1px solid rgba(15,92,82,.16);
}
.badge-accent{background:rgba(198,242,78,.28);border-color:rgba(198,242,78,.7);color:#3F5208}

.article-title{
  font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1.22;
  margin:18px 0 0;max-width:900px;color:var(--ink-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;padding-bottom:26px;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFCDC4}
.share-group{margin-left:auto;display:flex;align-items:center;gap:8px}
.share-group button{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink-700);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.share-group button:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px)}

/* ---------- article layout ---------- */
.article-wrap{padding:48px 0 0}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px}
@media (min-width:1280px){.article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:64px}}

.article-body{
  max-width:760px;font-size:17px;line-height:1.95;color:var(--ink-500);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.4em}
.article-body strong{color:var(--ink-900);font-weight:700}
.article-body h2{
  position:relative;font-size:24px;font-weight:700;color:var(--ink-900);
  margin:48px 0 16px;padding-left:16px;line-height:1.42;
}
.article-body h2::before{
  content:'';position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:4px;background:var(--accent-400);
}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink-900);margin:32px 0 12px}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:22px}
.article-body li{margin:0 0 .6em}
.article-body ul li{list-style:none;position:relative;padding-left:16px}
.article-body ul li::before{
  content:'';position:absolute;left:0;top:.72em;width:6px;height:6px;
  border-radius:50%;background:var(--brand-600);
}
.article-body ol li::marker{color:var(--brand-600);font-weight:600}
.article-body blockquote{
  margin:28px 0;padding:20px 22px;background:var(--paper);
  border-left:3px solid var(--accent-400);border-radius:0 var(--radius-card) var(--radius-card) 0;
  color:var(--ink-700);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px 0;width:100%;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700)}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;
}
.article-body th{background:#FAF9F6;color:var(--ink-900);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAF9F6}
@media (max-width:768px){
  .article-body{font-size:16px;line-height:1.9}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-body th:first-child,.article-body td:first-child{
    position:sticky;left:0;background:#FAF9F6;z-index:1;
  }
}

/* ---------- toc ---------- */
.toc-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-card);
}
.toc-card h3{font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--ink-900);margin-bottom:14px}
.toc-list{list-style:none;padding:0;margin:0;max-height:340px;overflow:auto}
.toc-list li{margin:0 0 4px}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--ink-500);
  line-height:1.6;transition:background .2s var(--ease),color .2s var(--ease);
}
.toc-list a:hover{background:var(--paper);color:var(--brand-600)}
.sticky-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px}

.toc-mobile{
  margin-bottom:28px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);padding:16px 18px;
}
.toc-mobile summary{
  cursor:pointer;list-style:none;font-size:15px;font-weight:600;color:var(--ink-900);
  display:flex;align-items:center;justify-content:space-between;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:'+';font-size:18px;color:var(--brand-600);line-height:1}
.toc-mobile[open] summary::after{content:'−'}
.toc-mobile .toc-list{margin-top:12px;max-height:none}

/* ---------- empty state ---------- */
.empty-state{
  min-height:260px;border:1px dashed var(--line);border-radius:var(--radius-card);
  background:var(--surface);display:flex;flex-direction:column;align-items:center;
  justify-content:center;text-align:center;padding:40px 24px;gap:10px;
}
.empty-state h2{font-size:20px;font-weight:700}
.empty-state p{font-size:14px;color:var(--muted);max-width:320px;margin-bottom:8px}

/* ---------- tag row ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--ink-500);transition:all .2s var(--ease);
}
.tag:hover{border-color:var(--brand-600);color:var(--brand-600)}

/* ---------- prev / next ---------- */
.pager{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px}
@media (min-width:768px){.pager{grid-template-columns:1fr 1fr}}
.pager-card{
  display:flex;flex-direction:column;gap:8px;padding:22px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.pager-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(15,92,82,.35)}
.pager-card .label{font-size:12px;letter-spacing:.1em;color:var(--muted);font-weight:600}
.pager-card strong{font-size:17px;color:var(--ink-900);font-weight:700;line-height:1.45}
.pager-card span{font-size:14px;color:var(--muted)}

/* ---------- cards ---------- */
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(15,92,82,.28)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:18px;font-weight:700;line-height:1.5}
.card-body h3 a{color:var(--ink-900)}
.card-body h3 a:hover{color:var(--brand-600)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.75}
.card-meta{
  margin-top:auto;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);padding-top:6px;
}
.card-meta .arrow{margin-left:auto;color:var(--brand-600);transition:transform .2s var(--ease)}
.card:hover .card-meta .arrow{transform:translateX(4px)}

.side-mini{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.side-mini:last-child{border-bottom:0;padding-bottom:0}
.side-mini img{width:72px;height:54px;object-fit:cover;border-radius:10px;flex:none}
.side-mini strong{display:block;font-size:14px;font-weight:600;color:var(--ink-900);line-height:1.55}
.side-mini span{font-size:12px;color:var(--muted)}
.side-mini:hover strong{color:var(--brand-600)}

/* ---------- faq ---------- */
.faq-list{max-width:820px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0;cursor:pointer;list-style:none;
  font-size:18px;font-weight:600;color:var(--ink-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'+';font-size:22px;line-height:1;color:var(--brand-600);
  transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{content:'−';transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--muted);max-width:720px}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--ink-900);color:#F2F4F1;
  padding:56px 32px;display:grid;gap:32px;grid-template-columns:1fr;
  border:1px solid rgba(255,255,255,.10);
}
@media (min-width:1024px){.cta-band{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:64px 56px}}
.cta-band::after{
  content:'';position:absolute;right:-120px;bottom:-140px;width:380px;height:380px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(198,242,78,.22),rgba(198,242,78,0) 70%);
}
.cta-band h2{color:#F2F4F1;font-size:clamp(22px,2.4vw,30px);font-weight:800;position:relative}
.cta-band p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(242,244,241,.76);max-width:560px;position:relative}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;position:relative}
.cta-points span{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:999px;
  font-size:13px;color:#F2F4F1;border:1px solid rgba(255,255,255,.18);
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative}
.cta-actions .btn-primary{background:var(--accent-400);color:var(--ink-900)}
.cta-actions .btn-primary:hover{background:#fff;color:var(--ink-900)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-900);color:#F2F4F1;margin-top:96px}
.site-footer h4{font-size:14px;font-weight:700;color:#F2F4F1;letter-spacing:.08em;margin-bottom:18px}
.site-footer .brand-text b{color:#F2F4F1}
.site-footer .brand-text span{color:var(--accent-400)}
.foot-link{
  display:block;font-size:14px;color:rgba(242,244,241,.72);padding:6px 0;
  position:relative;width:fit-content;transition:color .2s var(--ease);
}
.foot-link::after{
  content:'';position:absolute;left:0;bottom:2px;height:1px;width:100%;
  background:var(--accent-400);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.foot-link:hover{color:var(--accent-400)}
.foot-link:hover::after{transform:scaleX(1)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(242,244,241,.6);
}

/* ---------- motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
    --ink-900:#0B1413; --ink-700:#161E1D; --ink-500:#3D4746;
    --brand-700:#0B4A42; --brand-600:#0F5C52;
    --accent-400:#C6F24E; --accent-600:#FF6A3D;
    --paper:#F7F6F2; --surface:#FFFFFF; --line:#E3E1D9; --muted:#6B7472;
    --light-text:#F2F4F1;
    --radius-btn:12px; --radius-card:16px; --radius-block:24px;
    --shadow-card:0 1px 2px rgba(11,20,19,.04), 0 8px 24px -16px rgba(11,20,19,.18);
    --shadow-card-hover:0 2px 4px rgba(11,20,19,.06), 0 18px 34px -18px rgba(11,20,19,.30);
    --ease:cubic-bezier(.22,.61,.36,1);
    --container:1240px;
  }

  html{scroll-behavior:smooth; -webkit-text-size-adjust:100%}
  html body{
    margin:0;
    background:var(--paper);
    color:var(--ink-500);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }

  .shell{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .shell{padding:0 32px} }
  @media (min-width:1024px){ .shell{padding:0 40px} }

  .section{padding:56px 0}
  @media (min-width:768px){ .section{padding:72px 0} }
  @media (min-width:1024px){ .section{padding:96px 0} }
  .section-tight{padding:44px 0}
  @media (min-width:1024px){ .section-tight{padding:64px 0} }
  .section-muted{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  .sec-head{max-width:780px;margin-bottom:36px}
  .sec-head-center{margin-left:auto;margin-right:auto;text-align:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:30px;padding:0 14px;border-radius:999px;
    border:1px solid rgba(15,92,82,.28);
    background:rgba(15,92,82,.05);
    color:var(--brand-700);
    font-size:13px;font-weight:600;letter-spacing:.04em;
  }
  .eyebrow-dot{width:6px;height:6px;border-radius:999px;background:var(--accent-400);display:inline-block}
  .sec-title{
    font-size:clamp(24px,2.6vw,34px);
    font-weight:800;color:var(--ink-900);
    letter-spacing:-.02em;line-height:1.24;margin:14px 0 12px;
  }
  .sec-desc{margin:0;font-size:16px;color:var(--muted);max-width:680px}
  .sec-head-center .sec-desc{margin-left:auto;margin-right:auto}

  /* ===== 顶部导航 ===== */
  .site-header{
    position:sticky;top:0;z-index:70;
    background:rgba(247,246,242,.92);
    backdrop-filter:saturate(150%) blur(10px);
    -webkit-backdrop-filter:saturate(150%) blur(10px);
    transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
    border-bottom:1px solid transparent;
  }
  .site-header.is-stuck{
    background:rgba(247,246,242,.96);
    border-bottom:1px solid var(--line);
    box-shadow:0 10px 30px -26px rgba(11,20,19,.6);
  }
  .header-inner{display:flex;align-items:center;gap:18px;height:72px;transition:height .3s var(--ease)}
  .site-header.is-stuck .header-inner{height:60px}

  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
  .brand-mark{width:32px;height:32px;flex:0 0 32px;transition:transform .4s var(--ease)}
  .brand:hover .brand-mark{transform:rotate(-8deg)}
  .brand-text{display:flex;flex-direction:column;line-height:1.06;font-weight:800;letter-spacing:-.01em}
  .brand-text b{font-size:16px;color:var(--ink-900)}
  .brand-text span{font-size:13px;color:var(--brand-600);font-weight:700;letter-spacing:.04em}

  .nav-links{display:none;align-items:center;gap:28px;margin-left:34px}
  .nav-links a{
    position:relative;padding:6px 0;font-size:15px;font-weight:500;
    color:var(--ink-700);text-decoration:none;white-space:nowrap;
    transition:color .2s var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;
    background:var(--brand-600);transition:width .3s var(--ease);
  }
  .nav-links a:hover{color:var(--brand-700)}
  .nav-links a:hover::after{width:100%}
  .nav-links a.is-active{color:var(--brand-700);font-weight:700}
  .nav-links a.is-active::after{width:100%;height:2px;background:var(--accent-400)}

  .header-actions{position:relative;display:flex;align-items:center;gap:10px;margin-left:auto}
  .icon-btn{
    width:40px;height:40px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);background:transparent;color:var(--ink-700);cursor:pointer;
    transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .icon-btn:hover{background:var(--surface);border-color:rgba(11,20,19,.24);color:var(--brand-700)}
  .burger{display:inline-flex}
  .search-pop{
    display:none;position:absolute;top:calc(100% + 12px);right:0;z-index:80;
    width:min(300px,calc(100vw - 40px));
    background:var(--surface);border:1px solid var(--line);border-radius:14px;
    box-shadow:var(--shadow-card-hover);padding:10px;
  }
  .search-pop.is-open{display:block}
  .search-form{display:flex;align-items:center;gap:8px}
  .search-input{
    flex:1 1 auto;min-width:0;height:42px;border-radius:10px;border:1px solid var(--line);
    background:var(--paper);padding:0 12px;font-size:14px;color:var(--ink-700);
  }
  .search-input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(15,92,82,.12);background:#fff}
  .search-submit{
    flex:0 0 auto;width:42px;height:42px;border-radius:10px;border:0;cursor:pointer;
    background:var(--brand-600);color:#fff;display:inline-flex;align-items:center;justify-content:center;
    transition:background .2s var(--ease);
  }
  .search-submit:hover{background:var(--ink-900)}

  @media (min-width:1024px){
    .nav-links{display:flex}
    .burger{display:none}
  }

  /* ===== 按钮 ===== */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;
    border:1px solid transparent;white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .btn-primary{background:var(--brand-600);color:#fff}
  .btn-primary:hover{background:var(--ink-900);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{border-color:rgba(11,20,19,.20);color:var(--ink-900);background:transparent}
  .btn-ghost:hover{background:var(--ink-900);color:#fff;border-color:var(--ink-900);transform:translateY(-1px)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-sm{height:42px;padding:0 18px;font-size:14px}
  .btn-block{width:100%}
  .btn[disabled]{opacity:.62;cursor:not-allowed;transform:none}
  .btn:focus-visible,.icon-btn:focus-visible,.foot-link:focus-visible,.faq-q:focus-visible,.nav-links a:focus-visible{
    outline:2px solid var(--accent-400);outline-offset:2px;border-radius:6px;
  }

  /* ===== Hero ===== */
  .hero{padding:44px 0 60px;position:relative}
  @media (min-width:1024px){ .hero{padding:64px 0 88px} }
  .hero-grid{display:grid;gap:34px}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
  }
  .hero-title{
    margin:18px 0 0;font-size:clamp(34px,5vw,60px);font-weight:800;
    line-height:1.1;letter-spacing:-.02em;color:var(--ink-900);
  }
  .hero-title .hl{
    color:var(--brand-600);
    background-image:linear-gradient(var(--accent-400),var(--accent-400));
    background-repeat:no-repeat;background-size:100% .14em;background-position:0 90%;
  }
  .hero-lead{margin:18px 0 0;font-size:18px;line-height:1.75;color:var(--ink-500);max-width:520px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:10px 18px;margin:24px 0 0;font-size:15px;color:var(--muted)}
  .hero-meta span{display:inline-flex;align-items:center;gap:8px}
  .hero-meta span + span{padding-left:18px;border-left:1px solid var(--line)}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:30px 0 0}
  .hero-trust{list-style:none;display:flex;flex-wrap:wrap;gap:10px 0;margin:26px 0 0;padding:0;font-size:14px;color:var(--muted)}
  .hero-trust li{display:inline-flex;align-items:center}
  .hero-trust li + li::before{content:"·";margin:0 12px;color:var(--line);font-weight:700}

  .hero-visual{position:relative}
  .visual-frame{
    position:relative;border-radius:var(--radius-block);overflow:hidden;
    aspect-ratio:4/5;background:var(--paper);box-shadow:var(--shadow-card);
  }
  @media (max-width:767px){ .visual-frame{aspect-ratio:4/3} }
  .visual-frame img{width:100%;height:100%;object-fit:cover;transform:scale(1.01);transition:transform .8s var(--ease)}
  .visual-frame:hover img{transform:scale(1.04)}
  .visual-frame::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg,rgba(11,20,19,0) 38%,rgba(11,20,19,.55) 100%);
  }
  .visual-card{
    position:absolute;top:20px;right:20px;z-index:2;
    background:var(--surface);border-radius:14px;padding:12px 16px;
    box-shadow:0 12px 30px -20px rgba(11,20,19,.55);
  }
  .visual-card .vc-label{display:block;font-size:12px;letter-spacing:.06em;color:var(--muted)}
  .visual-card strong{font-size:16px;color:var(--ink-900);font-weight:800}
  .visual-bar{
    position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
    background:rgba(11,74,66,.93);color:#fff;border-radius:12px;
    padding:12px 16px;font-size:14px;font-weight:600;letter-spacing:.02em;
    display:flex;align-items:center;gap:10px;
  }
  .visual-bar svg{flex:0 0 auto}

  /* ===== 数据带 ===== */
  .stats-band{
    display:grid;grid-template-columns:repeat(2,1fr);
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;
  }
  @media (min-width:768px){ .stats-band{grid-template-columns:repeat(4,1fr)} }
  .stat{padding:24px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(n+3){border-bottom:0}
  @media (min-width:768px){
    .stat{border-bottom:0}
    .stat:nth-child(2n){border-right:1px solid var(--line)}
    .stat:nth-child(4n){border-right:0}
  }
  .stat-num{
    font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--ink-900);
    letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums;
  }
  .stat-num em{font-style:normal;font-size:.5em;font-weight:700;color:var(--brand-600);margin-left:6px;letter-spacing:0}
  .stat-label{margin-top:8px;font-size:13px;color:var(--muted)}

  /* ===== 流程 ===== */
  .flow{display:grid;gap:26px;grid-template-columns:1fr}
  @media (min-width:768px){ .flow{grid-template-columns:repeat(2,1fr);gap:30px 32px} }
  @media (min-width:1024px){ .flow{grid-template-columns:repeat(4,1fr);gap:24px} }
  .step{position:relative;padding-top:28px;border-top:1px solid var(--line)}
  .step::before{
    content:"";position:absolute;top:-6px;left:0;width:11px;height:11px;border-radius:999px;
    background:var(--accent-400);border:2px solid var(--paper);transition:transform .25s var(--ease),background .25s var(--ease);
  }
  .step:hover::before{transform:scale(1.35);background:var(--brand-600)}
  .step-num{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--brand-600);font-variant-numeric:tabular-nums}
  .step h3{margin:8px 0 8px;font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
  .step p{margin:0;font-size:15px;color:var(--muted)}

  /* ===== 卡片 ===== */
  .cards-3{display:grid;gap:20px;grid-template-columns:1fr}
  @media (min-width:768px){ .cards-3{grid-template-columns:repeat(2,1fr)} }
  @media (min-width:1024px){ .cards-3{grid-template-columns:repeat(3,1fr);gap:24px} }
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;box-shadow:var(--shadow-card);
    transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
    display:flex;flex-direction:column;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(11,20,19,.14)}
  .card-media{aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
  .card:hover .card-media img{transform:scale(1.04)}
  .card-body{padding:22px;display:flex;flex-direction:column;flex:1 1 auto}
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.06em;
    background:rgba(15,92,82,.07);color:var(--brand-700);border:1px solid rgba(15,92,82,.16);
  }
  .tag-accent{background:rgba(198,242,78,.22);color:#3E5A0C;border-color:rgba(198,242,78,.6)}
  .card h3{margin:14px 0 8px;font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
  .card p{margin:0;font-size:15px;color:var(--muted)}
  .card-foot{
    margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    font-size:13px;color:var(--muted);
  }

  /* ===== 编号要点 ===== */
  .points{display:grid;grid-template-columns:1fr;gap:0}
  @media (min-width:1024px){ .points{grid-template-columns:repeat(2,1fr);gap:0 56px} }
  .point{display:grid;grid-template-columns:56px minmax(0,1fr);gap:14px;padding:24px 0;border-top:1px solid var(--line);transition:background .25s var(--ease)}
  .point:hover{background:rgba(255,255,255,.6)}
  .point-num{font-size:15px;font-weight:800;color:var(--brand-600);letter-spacing:.06em;font-variant-numeric:tabular-nums}
  .point h3{margin:0 0 6px;font-size:18px;font-weight:700;color:var(--ink-900)}
  .point p{margin:0;font-size:15px;color:var(--muted)}

  /* ===== FAQ ===== */
  .faq{max-width:820px;margin:0 auto}
  .faq-item{border-bottom:1px solid var(--line);transition:background .4s var(--ease);padding:0 4px}
  .faq-item.is-flash{background:rgba(198,242,78,.16)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:22px 0;border:0;background:none;text-align:left;cursor:pointer;
    font-size:18px;font-weight:600;color:var(--ink-900);letter-spacing:-.01em;
  }
  .faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--brand-600);border-radius:2px;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .faq-icon::before{left:0;top:8px;width:18px;height:2px}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
  .faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s var(--ease)}
  .faq-item.is-open .faq-a{grid-template-rows:1fr}
  .faq-a-inner{overflow:hidden}
  .faq-a p{margin:0;padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--muted);max-width:680px}

  /* ===== CTA ===== */
  .cta-band{
    background:var(--ink-900);color:var(--light-text);
    border-radius:var(--radius-block);padding:38px 24px;
    border:1px solid rgba(255,255,255,.10);
  }
  @media (min-width:1024px){ .cta-band{padding:52px 48px} }
  .cta-grid{display:grid;gap:30px}
  @media (min-width:1024px){ .cta-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center} }
  .cta-band h2{margin:0 0 14px;font-size:clamp(24px,2.6vw,32px);font-weight:800;color:var(--light-text);letter-spacing:-.02em;line-height:1.24}
  .cta-band p{margin:0;color:rgba(242,244,241,.74);font-size:16px;max-width:460px}
  .badge-warn{
    display:inline-flex;align-items:center;gap:8px;margin-top:20px;
    height:28px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.06em;
    background:rgba(255,106,61,.14);color:#FFB199;border:1px solid rgba(255,106,61,.32);
  }
  .form-card{background:var(--surface);border-radius:var(--radius-card);padding:22px;color:var(--ink-500)}
  @media (min-width:768px){ .form-card{padding:26px} }
  .field{margin-bottom:16px}
  .field label{display:block;margin-bottom:8px;font-size:13px;font-weight:600;color:var(--ink-700)}
  .field .req{color:var(--accent-600);margin-left:4px}
  .input{
    width:100%;height:48px;border-radius:12px;border:1px solid var(--line);
    background:var(--paper);padding:0 14px;font-size:15px;color:var(--ink-700);
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
  }
  .input:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(15,92,82,.13);background:#fff}
  select.input{padding-right:36px}
  .check{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--muted)}
  .check input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-600);flex:0 0 18px}
  .form-note{margin:14px 0 0;font-size:12px;color:var(--muted)}
  .form-success{
    display:none;align-items:center;gap:10px;
    background:rgba(15,92,82,.07);border:1px solid rgba(15,92,82,.2);border-radius:12px;
    padding:16px;font-size:15px;font-weight:600;color:var(--brand-700);
  }
  .form-card.is-sent .form-body{display:none}
  .form-card.is-sent .form-success{display:flex}

  /* ===== 页脚 ===== */
  .site-footer{background:var(--ink-900);color:var(--light-text);margin-top:72px}
  .site-footer h4{margin:0 0 16px;font-size:14px;font-weight:700;color:var(--light-text);letter-spacing:.08em}
  .foot-link{
    display:block;width:fit-content;position:relative;padding:6px 0;
    font-size:14px;color:rgba(242,244,241,.72);text-decoration:none;
    transition:color .2s var(--ease);
  }
  .foot-link::after{
    content:"";position:absolute;left:0;bottom:3px;height:1px;width:0;
    background:var(--accent-400);transition:width .3s var(--ease);
  }
  .foot-link:hover{color:var(--accent-400)}
  .foot-link:hover::after{width:100%}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.10);margin-top:40px;padding-top:20px;
    display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
    font-size:13px;color:rgba(242,244,241,.6);
  }
  .footer-bottom a{color:inherit;text-decoration:none}
  .footer-bottom a:hover{color:var(--accent-400)}

  /* ===== 移动端抽屉 ===== */
  .drawer-mask{
    position:fixed;inset:0;z-index:90;background:rgba(11,20,19,.46);
    opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .nav-drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:95;
    width:min(86vw,340px);background:var(--surface);
    padding:20px;display:flex;flex-direction:column;gap:14px;overflow-y:auto;
    transform:translateX(100%);transition:transform .32s var(--ease);
    box-shadow:-24px 0 50px -34px rgba(11,20,19,.6);
  }
  .nav-drawer.is-open{transform:none}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--line)}
  .drawer-links a{
    display:flex;align-items:center;height:48px;padding:0 4px;
    font-size:16px;font-weight:500;color:var(--ink-700);text-decoration:none;
    border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
  }
  .drawer-links a:hover{color:var(--brand-700);padding-left:8px}
  .drawer-links a.is-active{color:var(--brand-700);font-weight:700}
  .drawer-contact{margin:0;font-size:13px;line-height:1.9;color:var(--muted)}
  body.no-scroll{overflow:hidden}

  /* ===== 入场动效 ===== */
  .js-on .reveal{opacity:0;transform:translateY(14px)}
  .js-on .reveal.is-in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}

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

/* roulang page: category2 */
:root{
  --ink-900:#0B1413; --ink-700:#161E1D; --ink-500:#3D4746;
  --brand-700:#0B4A42; --brand-600:#0F5C52;
  --accent-400:#C6F24E; --accent-600:#FF6A3D;
  --paper:#F7F6F2; --surface:#FFFFFF; --line:#E3E1D9; --muted:#6B7472;
  --radius-btn:12px; --radius-card:16px; --radius-block:24px;
  --shadow-card:0 1px 2px rgba(11,20,19,.04),0 8px 24px -16px rgba(11,20,19,.18);
  --shadow-hover:0 2px 4px rgba(11,20,19,.06),0 18px 40px -22px rgba(11,20,19,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --shell-x:20px;
}
@media (min-width:768px){ :root{ --shell-x:32px; } }
@media (min-width:1024px){ :root{ --shell-x:40px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; background:var(--paper); color:var(--ink-500);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px; line-height:1.8; -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{ margin:0; color:var(--ink-700); line-height:1.2; letter-spacing:-.02em; font-weight:800; }
p{ margin:0; }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
button{ font:inherit; }
ul{ margin:0; padding:0; list-style:none; }
:focus-visible{ outline:2px solid var(--accent-400); outline-offset:2px; }

.shell{ width:100%; max-width:1240px; margin:0 auto; padding-left:var(--shell-x); padding-right:var(--shell-x); }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:60;
  background:rgba(247,246,242,.86);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .32s var(--ease),border-color .32s var(--ease);
}
.site-header.is-scrolled{ background:rgba(247,246,242,.95); border-bottom-color:var(--line); }
.header-inner{ display:flex; align-items:center; gap:20px; height:72px; transition:height .32s var(--ease); }
.site-header.is-scrolled .header-inner{ height:60px; }

.brand{ display:inline-flex; align-items:center; gap:10px; flex:none; }
.brand-mark{ width:30px; height:30px; flex:none; }
.brand-text{ display:inline-flex; align-items:baseline; gap:5px; font-size:17px; font-weight:800; letter-spacing:-.01em; color:var(--ink-900); }
.brand-text span{ color:var(--brand-600); }

.nav-links{ display:none; align-items:center; gap:28px; margin-left:10px; }
@media (min-width:1024px){ .nav-links{ display:flex; } }
.nav-links a{ position:relative; padding:4px 0; font-size:15px; font-weight:500; color:var(--ink-500); transition:color .2s var(--ease); }
.nav-links a::after{ content:""; position:absolute; left:0; bottom:-3px; height:2px; width:0; background:var(--brand-600); transition:width .28s var(--ease); }
.nav-links a:hover{ color:var(--ink-900); }
.nav-links a:hover::after{ width:100%; }
.nav-links a.is-active{ color:var(--ink-900); font-weight:700; }
.nav-links a.is-active::after{ width:100%; background:var(--accent-400); }

.header-actions{ margin-left:auto; display:flex; align-items:center; gap:10px; position:relative; }
.icon-btn{
  width:40px; height:40px; display:inline-flex; align-items:center; justify-content:center;
  border:1px solid var(--line); background:var(--surface); border-radius:999px; color:var(--ink-700);
  cursor:pointer; transition:transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{ border-color:var(--ink-900); color:var(--ink-900); transform:translateY(-1px); }
.icon-btn:active{ transform:translateY(1px); }
.search-panel{
  position:absolute; top:50%; right:0; width:240px; height:40px; padding:0 14px;
  display:flex; align-items:center; gap:8px;
  background:var(--surface); border:1px solid var(--line); border-radius:999px; box-shadow:var(--shadow-card);
  opacity:0; pointer-events:none; transform:translateY(-50%) scale(.96);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.search-panel.is-open{ opacity:1; pointer-events:auto; transform:translateY(-50%) scale(1); }
.search-panel input{ flex:1; border:0; outline:none; background:transparent; font-size:14px; color:var(--ink-700); }
.drawer-btn{ display:inline-flex; }
@media (min-width:1024px){ .drawer-btn{ display:none; } }

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 24px; border-radius:var(--radius-btn);
  font-size:15px; font-weight:600; border:1px solid transparent; cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn-sm{ height:40px; padding:0 18px; font-size:14px; border-radius:999px; }
.btn-primary{ background:var(--brand-600); color:#fff; }
.btn-primary:hover{ background:var(--ink-900); transform:translateY(-1px); }
.btn-primary:active{ transform:translateY(1px); }
.btn-primary:disabled{ opacity:.6; cursor:not-allowed; transform:none; }
.btn-ghost{ background:transparent; border-color:var(--ink-900); color:var(--ink-900); }
.btn-ghost:hover{ background:var(--ink-900); color:#fff; transform:translateY(-1px); }
.btn-text{ display:inline-flex; align-items:center; gap:6px; font-size:15px; font-weight:600; color:var(--brand-600); transition:color .2s var(--ease); }
.btn-text svg{ transition:transform .24s var(--ease); }
.btn-text:hover{ color:var(--ink-900); }
.btn-text:hover svg{ transform:translateX(4px); }

/* ---------- pills / tags ---------- */
.pill{
  display:inline-flex; align-items:center; gap:8px; height:32px; padding:0 14px;
  border-radius:999px; font-size:13px; font-weight:600; letter-spacing:.02em;
}
.pill-outline{ border:1px solid var(--brand-600); color:var(--brand-600); background:rgba(15,92,82,.04); }
.tag{
  display:inline-flex; align-items:center; height:24px; padding:0 10px; border-radius:999px;
  font-size:12px; font-weight:600; letter-spacing:.06em;
  background:rgba(15,92,82,.08); color:var(--brand-700);
}
.tag-accent{ background:rgba(198,242,78,.38); color:#2F4A12; }
.tag-alert{ background:rgba(255,106,61,.12); color:#B33D18; }

/* ---------- hero ---------- */
.hero{ position:relative; padding-top:44px; padding-bottom:56px; overflow:hidden; }
.hero::before{
  content:""; position:absolute; inset:0; z-index:0;
  background:
    radial-gradient(58% 60% at 88% 6%, rgba(198,242,78,.24), transparent 68%),
    linear-gradient(180deg,#FFFFFF 0%, var(--paper) 100%);
}
.hero .shell{ position:relative; z-index:1; }
.hero-grid{ display:grid; gap:36px; }
@media (min-width:1024px){ .hero-grid{ grid-template-columns:7fr 5fr; align-items:center; gap:56px; min-height:520px; } }
.hero-copy > * + *{ margin-top:20px; }
.hero-title{ font-size:clamp(30px,4.4vw,54px); line-height:1.14; letter-spacing:-.03em; color:var(--ink-900); }
.hero-sub{ font-size:16px; color:var(--muted); max-width:520px; }
@media (min-width:768px){ .hero-sub{ font-size:17px; } }
.meta-line{ display:flex; flex-wrap:wrap; align-items:center; gap:12px; font-size:14px; color:var(--ink-500); }
.meta-line .sep{ width:1px; height:14px; background:var(--line); }
.hero-cta{ display:flex; flex-wrap:wrap; gap:12px; }
.trust{ display:flex; flex-wrap:wrap; gap:8px; font-size:13px; color:var(--muted); }

.hero-media{
  position:relative; border-radius:var(--radius-block); overflow:hidden;
  aspect-ratio:16/11; box-shadow:var(--shadow-card);
}
@media (min-width:1024px){ .hero-media{ aspect-ratio:4/5; } }
.hero-media img{ width:100%; height:100%; object-fit:cover; transform:scale(1.03); transition:transform .6s var(--ease); }
.hero-media:hover img{ transform:scale(1); }
.hero-media::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(11,20,19,0) 42%,rgba(11,20,19,.46) 100%); }
.media-card{
  position:absolute; top:16px; right:16px; z-index:2;
  display:flex; align-items:center; gap:8px; padding:10px 14px;
  background:rgba(255,255,255,.96); border-radius:14px;
  font-size:13px; font-weight:700; color:var(--ink-700); box-shadow:var(--shadow-card);
}
.media-bar{
  position:absolute; left:0; right:0; bottom:0; z-index:2;
  display:flex; justify-content:space-between; gap:12px; padding:14px 18px;
  background:rgba(15,92,82,.92); color:#fff; font-size:13px; font-weight:600;
}
.dot-live{ width:8px; height:8px; border-radius:50%; background:var(--accent-400); display:inline-block; }

/* ---------- sections ---------- */
.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-tight{ padding-top:36px; padding-bottom:36px; }
@media (min-width:1024px){ .section-tight{ padding-top:48px; padding-bottom:48px; } }
.section-head{ max-width:760px; }
.section-head h2{ font-size:clamp(24px,2.6vw,34px); }
.section-head p{ margin-top:14px; color:var(--muted); font-size:15px; }
.eyebrow{ display:block; font-size:12px; font-weight:800; letter-spacing:.16em; color:var(--brand-600); margin-bottom:12px; }
.head-row{ display:flex; flex-wrap:wrap; align-items:flex-end; justify-content:space-between; gap:20px; }

/* ---------- stats ---------- */
.stats{
  display:grid; grid-template-columns:repeat(2,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line);
  border-radius:var(--radius-card); overflow:hidden;
}
@media (min-width:1024px){ .stats{ grid-template-columns:repeat(4,1fr); } }
.stat{ background:var(--surface); padding:26px 22px; }
.stat-num{ font-size:clamp(28px,3vw,36px); font-weight:800; color:var(--ink-900); letter-spacing:-.03em; font-variant-numeric:tabular-nums; line-height:1.1; }
.stat-num small{ font-size:15px; font-weight:700; color:var(--brand-600); margin-left:4px; }
.stat-label{ margin-top:8px; font-size:13px; color:var(--muted); }

/* ---------- rank list ---------- */
.rank{ border-top:1px solid var(--line); }
.rank-row{
  display:flex; align-items:center; gap:16px; padding:18px 8px;
  border-bottom:1px solid var(--line); transition:background .2s var(--ease);
}
.rank-row:hover{ background:var(--paper); }
.rank-no{ font-size:14px; font-weight:800; color:var(--brand-600); font-variant-numeric:tabular-nums; letter-spacing:.06em; width:34px; flex:none; }
.rank-name{ font-size:16px; font-weight:700; color:var(--ink-700); }
.rank-cat{ font-size:13px; color:var(--muted); margin-left:auto; }
.rank-score{ font-size:16px; font-weight:800; color:var(--ink-900); font-variant-numeric:tabular-nums; width:52px; text-align:right; flex:none; }
@media (max-width:520px){ .rank-cat{ display:none; } }

/* ---------- chips ---------- */
.chips{ display:flex; flex-wrap:wrap; gap:10px; }
.chip{
  height:38px; padding:0 18px; border-radius:999px;
  border:1px solid var(--line); background:var(--surface); color:var(--ink-500);
  font-size:14px; font-weight:600; cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{ border-color:var(--ink-900); color:var(--ink-900); transform:translateY(-1px); }
.chip.is-active{ background:var(--ink-900); border-color:var(--ink-900); color:#fff; }

/* ---------- cards ---------- */
.grid-cards{ display:grid; gap:24px; grid-template-columns:1fr; }
@media (min-width:640px){ .grid-cards{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .grid-cards{ grid-template-columns:repeat(3,1fr); } }
@media (min-width:1280px){ .grid-cards{ grid-template-columns:repeat(4,1fr); } }

.card{
  display:flex; flex-direction:column; background:var(--surface);
  border:1px solid var(--line); border-radius:var(--radius-card);
  box-shadow:var(--shadow-card); overflow:hidden;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease);
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-hover); }
.card-media{ aspect-ratio:16/9; overflow:hidden; background:var(--paper); }
.card-media img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.card:hover .card-media img{ transform:scale(1.04); }
.card-body{ padding:18px 20px 20px; display:flex; flex-direction:column; gap:12px; flex:1; }
.card-title{ font-size:18px; font-weight:700; color:var(--ink-700); }
.card-desc{ font-size:14px; color:var(--muted); line-height:1.7; }
.card-meta{ margin-top:auto; display:flex; align-items:center; justify-content:space-between; gap:10px; padding-top:12px; border-top:1px solid var(--line); font-size:13px; color:var(--muted); }
.card-meta .go{ display:inline-flex; align-items:center; gap:5px; color:var(--brand-600); font-weight:600; }
.card-meta .go svg{ transition:transform .24s var(--ease); }
.card:hover .card-meta .go svg{ transform:translateX(4px); }
.is-hidden{ display:none !important; }

.empty-state{
  min-height:220px; border:1px dashed var(--line); border-radius:var(--radius-card);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
  color:var(--muted); text-align:center; padding:24px; background:var(--surface);
}

/* ---------- split feature ---------- */
.split{ display:grid; gap:28px; align-items:center; }
@media (min-width:1024px){ .split{ grid-template-columns:1fr 1fr; gap:56px; } }
.split-media{ border-radius:var(--radius-block); overflow:hidden; box-shadow:var(--shadow-card); aspect-ratio:16/10; }
.split-media img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.split-media:hover img{ transform:scale(1.04); }
@media (min-width:1024px){ .split.reverse .split-media{ order:2; } }
.split-list{ margin-top:22px; border-top:1px solid var(--line); }
.split-list li{ display:flex; gap:12px; padding:14px 0; border-bottom:1px solid var(--line); font-size:15px; color:var(--ink-500); }
.split-list svg{ flex:none; margin-top:5px; }

/* ---------- steps ---------- */
.steps{ display:grid; gap:26px; grid-template-columns:1fr; }
@media (min-width:768px){ .steps{ grid-template-columns:repeat(2,1fr); } }
@media (min-width:1024px){ .steps{ grid-template-columns:repeat(4,1fr); gap:24px; } }
.step{ padding-top:20px; border-top:2px solid var(--line); position:relative; }
.step::before{ content:""; position:absolute; top:-2px; left:0; width:40px; height:2px; background:var(--accent-400); }
.step-no{ font-size:13px; font-weight:800; letter-spacing:.14em; color:var(--brand-600); font-variant-numeric:tabular-nums; }
.step h3{ margin-top:10px; font-size:18px; }
.step p{ margin-top:8px; font-size:14px; color:var(--muted); line-height:1.7; }

/* ---------- dark band ---------- */
.band-dark{ background:var(--ink-900); color:#F2F4F1; position:relative; overflow:hidden; }
.band-dark::before{
  content:""; position:absolute; inset:0; opacity:.30;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover; background-position:center;
}
.band-dark::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg,rgba(11,20,19,.86),rgba(11,20,19,.94)); }
.band-dark .shell{ position:relative; z-index:1; }
.band-dark h2,.band-dark h3{ color:#F2F4F1; }
.band-dark p{ color:rgba(242,244,241,.74); }
.band-dark .card{ background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.12); box-shadow:none; }
.band-dark .card:hover{ transform:translateY(-4px); background:rgba(255,255,255,.08); }
.band-dark .card-title{ color:#F2F4F1; }
.band-dark .card-desc{ color:rgba(242,244,241,.72); }
.band-dark .card-meta{ border-top-color:rgba(255,255,255,.12); color:rgba(242,244,241,.62); }
.band-dark .tag{ background:rgba(198,242,78,.16); color:var(--accent-400); }
.band-dark .step{ border-top-color:rgba(255,255,255,.14); }
.band-dark .section-head p{ color:rgba(242,244,241,.72); }
.band-dark .eyebrow{ color:var(--accent-400); }

/* ---------- faq ---------- */
.faq{ max-width:820px; margin:0 auto; border-top:1px solid var(--line); }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px;
  padding:22px 0; background:none; border:0; cursor:pointer; text-align:left;
  font-size:18px; font-weight:600; color:var(--ink-700); transition:color .2s var(--ease);
}
.faq-q:hover{ color:var(--brand-600); }
.faq-icon{ position:relative; width:22px; height:22px; flex:none; }
.faq-icon::before,.faq-icon::after{ content:""; position:absolute; background:var(--brand-600); border-radius:2px; transition:transform .22s var(--ease); }
.faq-icon::before{ left:0; top:10px; width:22px; height:2px; }
.faq-icon::after{ left:10px; top:0; width:2px; height:22px; }
.faq-item.is-open .faq-icon::after{ transform:scaleY(0); }
.faq-a{ overflow:hidden; max-height:0; transition:max-height .32s var(--ease); }
.faq-a p{ margin:0 0 22px; font-size:15px; line-height:1.85; color:var(--muted); }

/* ---------- cta / form ---------- */
.cta-block{ border-radius:var(--radius-block); overflow:hidden; display:grid; grid-template-columns:1fr; }
@media (min-width:1024px){ .cta-block{ grid-template-columns:1fr 1fr; } }
.cta-copy{ background:var(--ink-900); color:#F2F4F1; padding:36px 28px; }
@media (min-width:768px){ .cta-copy{ padding:52px 44px; } }
.cta-copy h2{ color:#F2F4F1; font-size:clamp(24px,2.6vw,32px); }
.cta-copy p{ margin-top:14px; font-size:15px; color:rgba(242,244,241,.74); }
.cta-note{ margin-top:22px; display:inline-flex; align-items:center; gap:8px; padding:8px 14px; border-radius:999px; background:rgba(255,106,61,.16); color:#FFB79B; font-size:13px; font-weight:600; }
.cta-help{ margin-top:26px; border-top:1px solid rgba(255,255,255,.12); padding-top:20px; }
.cta-help li{ display:flex; gap:10px; font-size:14px; color:rgba(242,244,241,.72); padding:7px 0; }
.cta-help svg{ flex:none; margin-top:5px; }

.form-card{ background:var(--surface); padding:32px 26px; }
@media (min-width:768px){ .form-card{ padding:44px 44px; } }
.field + .field{ margin-top:18px; }
.field label{ display:block; font-size:13px; font-weight:600; color:var(--ink-700); margin-bottom:8px; }
.field .req{ color:var(--accent-600); margin-left:4px; }
.input{
  width:100%; height:48px; padding:0 14px; border-radius:12px;
  border:1px solid var(--line); background:var(--surface); color:var(--ink-700); font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.input{ height:96px; padding:12px 14px; resize:vertical; line-height:1.7; }
.input::placeholder{ color:#A5ABA9; }
.input:focus{ outline:none; border-color:var(--brand-600); box-shadow:0 0 0 4px rgba(15,92,82,.12); }
select.input{
  appearance:none; -webkit-appearance:none; padding-right:40px;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7472' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 14px center;
}
.check{ display:flex; gap:10px; align-items:flex-start; font-size:13px; color:var(--muted); line-height:1.7; }
.check input{ width:18px; height:18px; margin-top:3px; border-radius:6px; accent-color:var(--brand-600); flex:none; }
.form-actions{ margin-top:24px; display:flex; flex-wrap:wrap; align-items:center; gap:14px; }
.form-actions .btn{ width:100%; }
@media (min-width:768px){ .form-actions .btn{ width:auto; min-width:200px; } }
.form-ok{
  display:none; align-items:center; gap:10px;
  padding:18px; border:1px solid rgba(15,92,82,.24); background:rgba(198,242,78,.18);
  border-radius:12px; font-size:14px; font-weight:600; color:var(--brand-700);
}

/* ---------- footer ---------- */
.site-footer{ background:var(--ink-900); color:#F2F4F1; }
.site-footer h4{ color:#F2F4F1; font-size:15px; font-weight:700; margin-bottom:16px; letter-spacing:0; }
.foot-link{
  display:block; font-size:14px; color:rgba(242,244,241,.72); padding:6px 0;
  background-image:linear-gradient(var(--accent-400),var(--accent-400));
  background-size:0 1px; background-repeat:no-repeat; background-position:0 100%;
  transition:color .2s var(--ease),background-size .28s var(--ease);
}
.foot-link:hover{ color:var(--accent-400); background-size:100% 1px; }

/* ---------- drawer ---------- */
.drawer{ position:fixed; inset:0; z-index:90; pointer-events:none; }
.drawer-scrim{ position:absolute; inset:0; background:rgba(11,20,19,.46); opacity:0; transition:opacity .3s var(--ease); }
.drawer-panel{
  position:absolute; top:0; right:0; height:100%; width:86%; max-width:360px;
  background:var(--surface); transform:translateX(100%);
  transition:transform .32s var(--ease); display:flex; flex-direction:column; padding:20px;
  overflow-y:auto;
}
.drawer.is-open{ pointer-events:auto; }
.drawer.is-open .drawer-scrim{ opacity:1; }
.drawer.is-open .drawer-panel{ transform:translateX(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:12px; }
.drawer-link{ display:flex; align-items:center; height:48px; border-bottom:1px solid var(--line); font-size:16px; font-weight:500; color:var(--ink-700); }
.drawer-link.is-active{ color:var(--brand-600); font-weight:700; }
.drawer-foot{ margin-top:auto; padding-top:24px; }

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{ animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .hero-media img{ transform:none; }
}

/* roulang page: category3 */
:root{
    --ink-900:#0B1413;
    --ink-700:#161E1D;
    --ink-500:#3D4746;
    --brand-700:#0B4A42;
    --brand-600:#0F5C52;
    --accent-400:#C6F24E;
    --accent-600:#FF6A3D;
    --paper:#F7F6F2;
    --surface:#FFFFFF;
    --line:#E3E1D9;
    --muted:#6B7472;
    --radius-btn:12px;
    --radius-card:16px;
    --radius-block:24px;
    --shadow-card:0 1px 2px rgba(11,20,19,.04), 0 8px 24px -16px rgba(11,20,19,.18);
    --shadow-hover:0 2px 6px rgba(11,20,19,.06), 0 18px 40px -22px rgba(11,20,19,.28);
    --ease:cubic-bezier(.22,.61,.36,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink-500);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4{color:var(--ink-700);margin:0;line-height:1.22;letter-spacing:-.02em;font-weight:700}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--accent-400);outline-offset:2px}
  .shell{max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%}
  @media (min-width:768px){.shell{padding-left:32px;padding-right:32px}}
  @media (min-width:1024px){.shell{padding-left:40px;padding-right:40px}}

  /* ---------- 导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(247,246,242,0);transition:background .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);border-bottom:1px solid transparent}
  .site-header.is-scrolled{background:rgba(247,246,242,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom-color:var(--line);box-shadow:0 6px 22px -20px rgba(11,20,19,.5)}
  .nav-bar{display:flex;align-items:center;gap:24px;height:72px;transition:height .32s var(--ease)}
  .site-header.is-scrolled .nav-bar{height:60px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{width:30px;height:30px;flex:0 0 auto}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-text b{font-size:17px;font-weight:800;letter-spacing:-.01em;color:var(--ink-700)}
  .brand-text span{font-size:11px;letter-spacing:.14em;font-weight:700;color:var(--brand-600)}
  .nav-links{display:none;align-items:center;gap:28px;margin-left:8px}
  .nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--ink-500);padding:6px 0;transition:color .2s var(--ease)}
  .nav-links a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-600);transition:width .28s var(--ease)}
  .nav-links a:hover{color:var(--ink-900)}
  .nav-links a:hover::after{width:100%}
  .nav-links a.is-active{color:var(--ink-900);font-weight:600}
  .nav-links a.is-active::after{width:22px;background:var(--accent-400)}
  .nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
  .icon-btn{width:42px;height:42px;border-radius:999px;border:1px solid var(--line);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .2s var(--ease),transform .2s var(--ease)}
  .icon-btn:hover{border-color:var(--brand-600);transform:translateY(-1px)}
  .search-wrap{position:relative}
  .search-field{position:absolute;right:52px;top:50%;transform:translateY(-50%) scaleX(.9);transform-origin:right center;opacity:0;pointer-events:none;width:240px;height:42px;border-radius:999px;border:1px solid var(--line);background:var(--surface);padding:0 16px;transition:opacity .24s var(--ease),transform .24s var(--ease)}
  .search-wrap.is-open .search-field{opacity:1;transform:translateY(-50%) scaleX(1);pointer-events:auto}
  .menu-btn{display:inline-flex;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center;cursor:pointer}
  @media (min-width:1024px){
    .nav-links{display:flex}
    .menu-btn{display:none}
  }
  .drawer{position:fixed;inset:0 0 0 auto;width:min(320px,86vw);background:var(--surface);border-left:1px solid var(--line);transform:translateX(100%);transition:transform .32s var(--ease);z-index:80;display:flex;flex-direction:column;padding:22px 20px}
  .drawer.is-open{transform:translateX(0)}
  .drawer a.drawer-link{display:flex;align-items:center;height:48px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line)}
  .drawer a.drawer-link.is-active{color:var(--brand-600);font-weight:700}
  .drawer-close{align-self:flex-end;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--surface);cursor:pointer}
  .scrim{position:fixed;inset:0;background:rgba(11,20,19,.42);opacity:0;pointer-events:none;transition:opacity .3s var(--ease);z-index:70}
  .scrim.is-open{opacity:1;pointer-events:auto}

  /* ---------- 通用组件 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
  .btn-primary{background:var(--brand-600);color:#fff}
  .btn-primary:hover{background:var(--ink-900);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
  .btn-ghost:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px)}
  .btn-light{background:var(--accent-400);color:var(--ink-900)}
  .btn-light:hover{background:#d7ff6b;transform:translateY(-1px)}
  .btn-block{width:100%}
  .btn[disabled],.btn.is-loading{opacity:.62;cursor:not-allowed;transform:none}
  .btn-sm{height:42px;padding:0 18px;font-size:14px}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-600);font-size:15px}
  .text-link svg{transition:transform .2s var(--ease)}
  .text-link:hover svg{transform:translateX(4px)}
  .tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;font-weight:600}
  .tag-soft{background:rgba(15,92,82,.09);color:var(--brand-700)}
  .tag-outline{border:1px solid var(--line);color:var(--muted);background:var(--surface)}
  .tag-warn{background:rgba(255,106,61,.12);color:#B23C16}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;border:1px solid rgba(15,92,82,.35);color:var(--brand-700);font-size:12.5px;font-weight:600;letter-spacing:.08em;background:rgba(255,255,255,.7)}
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease)}
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D6D3C7}
  .card-body{padding:24px}
  .section{padding:56px 0}
  @media (min-width:768px){.section{padding:72px 0}}
  @media (min-width:1024px){.section{padding:96px 0}}
  .section-head{max-width:720px;margin-bottom:36px}
  .section-head h2{font-size:clamp(24px,2.6vw,34px);margin-top:12px}
  .section-head p{margin-top:14px;color:var(--muted);font-size:16px}
  .divider{height:1px;background:var(--line);border:0;margin:0}

  /* ---------- Hero ---------- */
  .hero{padding-top:32px;padding-bottom:24px}
  @media (min-width:1024px){.hero{padding-top:48px;padding-bottom:40px}}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:26px}
  .crumbs a:hover{color:var(--brand-600)}
  .crumbs .cur{color:var(--ink-700);font-weight:600}
  .hero-grid{display:grid;gap:28px;align-items:center}
  @media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:40px}}
  .hero h1{font-size:clamp(32px,4.6vw,54px);font-weight:800;line-height:1.12;margin-top:20px}
  .hero h1 em{font-style:normal;color:var(--brand-600)}
  .hero-sub{margin-top:18px;font-size:17px;color:var(--ink-500);max-width:540px}
  .hero-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:24px;font-size:14px;color:var(--muted)}
  .hero-meta span{display:inline-flex;align-items:center;gap:7px}
  .hero-meta .sep{width:1px;height:14px;background:var(--line);display:inline-block}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
  .trust{margin-top:26px;font-size:13.5px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px}
  .trust i{font-style:normal;color:var(--accent-400)}
  .hero-visual{position:relative;border-radius:var(--radius-block);overflow:hidden;aspect-ratio:4/5;background:var(--ink-900)}
  .hero-visual img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
  .hero-visual:hover img{transform:scale(1.03)}
  .hero-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,20,19,.42) 0%,rgba(11,20,19,0) 38%,rgba(11,20,19,.55) 100%)}
  .hero-chip{position:absolute;top:18px;right:18px;z-index:2;background:rgba(255,255,255,.94);border-radius:14px;padding:12px 16px;font-size:13px;color:var(--ink-700);box-shadow:var(--shadow-card)}
  .hero-chip b{display:block;font-size:16px;color:var(--ink-900)}
  .hero-strip{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:18px 22px;background:rgba(11,74,66,.9);color:#fff;font-size:14px;display:flex;align-items:center;gap:10px}
  .stat-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:44px}
  .stat-grid{display:grid;grid-template-columns:repeat(2,1fr)}
  @media (min-width:768px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
  .stat{padding:24px 8px;border-right:1px solid var(--line)}
  .stat:last-child{border-right:0}
  .stat b{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;line-height:1.1}
  .stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted)}
  @media (max-width:767px){.stat:nth-child(2n){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}}

  /* ---------- 能力卡 ---------- */
  .ability-grid{display:grid;gap:20px}
  @media (min-width:640px){.ability-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.ability-grid{grid-template-columns:repeat(3,1fr)}}
  .ability-icon{width:44px;height:44px;border-radius:12px;background:rgba(15,92,82,.08);display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}
  .ability-grid h3{font-size:19px}
  .ability-grid p{margin-top:10px;font-size:15px;color:var(--muted)}
  .ability-grid ul{margin-top:14px;display:grid;gap:8px}
  .ability-grid li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-500)}
  .ability-grid li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:999px;background:var(--accent-400)}

  /* ---------- 流程 ---------- */
  .flow{display:grid;gap:20px;counter-reset:flow}
  @media (min-width:640px){.flow{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.flow{grid-template-columns:repeat(4,1fr)}}
  .flow-item{position:relative;padding-top:26px;border-top:2px solid var(--line)}
  .flow-item:hover{border-top-color:var(--accent-400)}
  .flow-item::before{counter-increment:flow;content:"0" counter(flow);position:absolute;top:-24px;left:0;background:var(--paper);padding-right:12px;color:var(--brand-600);font-weight:800;font-size:15px;letter-spacing:.06em}
  .flow-item h3{font-size:18px;margin-top:6px}
  .flow-item p{margin-top:10px;font-size:14.5px;color:var(--muted)}

  /* ---------- 安全等级对比 ---------- */
  .plans{display:grid;gap:20px}
  @media (min-width:1024px){.plans{grid-template-columns:repeat(3,1fr);align-items:start}}
  .plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px 24px;box-shadow:var(--shadow-card);position:relative;transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease)}
  .plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .plan.is-featured{border:2px solid var(--brand-600);box-shadow:var(--shadow-hover)}
  @media (min-width:1024px){.plan.is-featured{transform:translateY(-8px)}.plan.is-featured:hover{transform:translateY(-12px)}}
  .plan-badge{position:absolute;top:-13px;left:22px;background:var(--accent-400);color:var(--ink-900);font-size:12px;font-weight:700;letter-spacing:.06em;padding:4px 12px;border-radius:999px}
  .plan h3{font-size:20px}
  .plan .level{margin-top:8px;font-size:13px;color:var(--muted)}
  .plan ul{margin-top:20px;display:grid;gap:11px}
  .plan li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-500);align-items:flex-start}
  .plan li svg{flex:0 0 auto;margin-top:4px}
  .plan li.off{color:#98A09E}
  .plan-cta{margin-top:24px}

  /* ---------- 对照表 ---------- */
  .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface)}
  table.matrix{border-collapse:separate;border-spacing:0;width:100%;min-width:720px;font-size:14.5px}
  table.matrix th,table.matrix td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
  table.matrix thead th{position:sticky;top:0;background:#FBFAF6;color:var(--ink-700);font-weight:700;font-size:14px;letter-spacing:.02em;z-index:2}
  table.matrix tbody tr:nth-child(even){background:#FAF9F6}
  table.matrix tbody tr:hover{background:#F2F1EA}
  table.matrix td:first-child,table.matrix th:first-child{position:sticky;left:0;background:inherit;font-weight:700;color:var(--ink-700);box-shadow:1px 0 0 var(--line)}
  table.matrix thead th:first-child{background:#FBFAF6}
  table.matrix tbody tr:nth-child(odd) td:first-child{background:#fff}
  table.matrix tbody tr:nth-child(even) td:first-child{background:#FAF9F6}
  .yes{color:var(--brand-600);font-weight:700}
  .no{color:#98A09E}

  /* ---------- 深色表单区 ---------- */
  .dark-band{background:var(--ink-900);color:#F2F4F1;border-radius:var(--radius-block);padding:40px 24px;position:relative;overflow:hidden}
  @media (min-width:768px){.dark-band{padding:56px 40px}}
  .dark-band::before{content:"";position:absolute;right:-120px;top:-120px;width:320px;height:320px;border-radius:999px;border:1px solid rgba(198,242,78,.28)}
  .dark-grid{position:relative;display:grid;gap:32px}
  @media (min-width:1024px){.dark-grid{grid-template-columns:5fr 6fr;gap:52px;align-items:start}}
  .dark-band h2{color:#F2F4F1;font-size:clamp(24px,2.6vw,32px)}
  .dark-band p.lead{margin-top:16px;color:rgba(242,244,241,.76);font-size:15.5px}
  .notice-list{margin-top:26px;display:grid;gap:12px}
  .notice-list li{display:flex;gap:10px;font-size:14px;color:rgba(242,244,241,.76)}
  .notice-list li svg{flex:0 0 auto;margin-top:4px}
  .form-card{background:#fff;border-radius:var(--radius-card);padding:26px;box-shadow:0 24px 60px -34px rgba(0,0,0,.6)}
  .form-row{display:grid;gap:16px}
  @media (min-width:640px){.form-row.two{grid-template-columns:1fr 1fr}}
  .field{display:block;margin-bottom:16px}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
  .field .req{color:var(--accent-600);margin-left:4px}
  .field input,.field select,.field textarea{width:100%;min-height:48px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:12px 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
  .field textarea{min-height:96px;resize:vertical}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(15,92,82,.12)}
  .check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--muted)}
  .check input{width:18px;height:18px;min-height:0;border-radius:5px;accent-color:var(--brand-600);margin-top:2px}
  .form-note{margin-top:14px;font-size:13px;color:var(--muted)}
  .form-success{display:none;align-items:center;gap:10px;font-size:14.5px;color:var(--brand-700);background:rgba(198,242,78,.24);border:1px solid rgba(15,92,82,.24);border-radius:12px;padding:14px 16px;margin-top:16px}
  .form-success.is-on{display:flex}

  /* ---------- FAQ ---------- */
  .faq{max-width:820px;margin:0 auto}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{width:100%;background:none;border:0;padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;cursor:pointer;font-size:18px;font-weight:600;color:var(--ink-700)}
  .faq-q:hover{color:var(--brand-600)}
  .faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease)}
  .faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-400);border-color:var(--accent-400)}
  .faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease)}
  .faq-item.is-open .faq-a{grid-template-rows:1fr}
  .faq-a>div{overflow:hidden}
  .faq-a p{padding:0 0 22px;font-size:15px;color:var(--muted);line-height:1.85;max-width:92%}

  /* ---------- CTA 条 ---------- */
  .cta-bar{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-block);padding:32px 24px;display:grid;gap:20px;box-shadow:var(--shadow-card)}
  @media (min-width:1024px){.cta-bar{grid-template-columns:1fr auto;align-items:center;padding:36px 40px}}
  .cta-bar h2{font-size:clamp(22px,2.2vw,28px)}
  .cta-bar p{margin-top:10px;color:var(--muted);font-size:15px}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink-900);color:#F2F4F1;margin-top:80px}
  .site-footer h4{color:#F2F4F1;font-size:14px;letter-spacing:.04em;margin-bottom:16px}
  .foot-link{display:block;font-size:14px;color:rgba(242,244,241,.72);padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease)}
  .foot-link:hover{color:var(--accent-400);transform:translateX(3px)}
  .foot-bottom{border-top:1px solid rgba(255,255,255,.10);margin-top:32px;padding-top:20px;display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;font-size:13px;color:rgba(242,244,241,.58)}
  .foot-bottom a:hover{color:var(--accent-400)}

  @media (prefers-reduced-motion:reduce){
    *{transition-duration:.01ms !important;animation-duration:.01ms !important}
    html{scroll-behavior:auto}
  }

/* roulang page: category4 */
:root{
  --ink-900:#0B1413;
  --ink-700:#161E1D;
  --ink-500:#3D4746;
  --brand-700:#0B4A42;
  --brand-600:#0F5C52;
  --accent-400:#C6F24E;
  --accent-600:#FF6A3D;
  --paper:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E3E1D9;
  --muted:#6B7472;
  --r-btn:12px;
  --r-card:16px;
  --r-block:24px;
  --shadow-card:0 1px 2px rgba(11,20,19,.04), 0 8px 24px -16px rgba(11,20,19,.18);
  --shadow-hover:0 2px 4px rgba(11,20,19,.06), 0 18px 36px -18px rgba(11,20,19,.26);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink-500);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand-600);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-700)}
h1,h2,h3,h4{margin:0;color:var(--ink-700);font-weight:700;letter-spacing:-.02em;line-height:1.2}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:2px solid var(--accent-400);outline-offset:2px}
.shell{max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%}
@media (min-width:768px){.shell{padding-left:32px;padding-right:32px}}
@media (min-width:1024px){.shell{padding-left:40px;padding-right:40px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,246,242,.88);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid transparent;
  transition:height .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,246,242,.95);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height .28s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:32px;height:32px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;font-size:15px;font-weight:800;line-height:1.12;letter-spacing:-.01em}
.brand-text b{color:var(--ink-900)}
.brand-text span{color:var(--brand-600);font-size:12px;font-weight:700;letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-500);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand-600);transition:width .24s var(--ease);
}
.nav-links a:hover{color:var(--ink-900)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--ink-900);font-weight:600}
.nav-links a.is-active::before{
  content:"";position:absolute;left:0;top:-2px;width:14px;height:2px;background:var(--accent-400);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.icon-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-500);
  background:var(--surface);transition:all .2s var(--ease);
}
.icon-btn:hover{border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-1px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:all .2s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff}
.btn-primary:hover{background:var(--ink-900);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border:1px solid var(--ink-900);color:var(--ink-900);background:transparent}
.btn-ghost:hover{background:var(--ink-900);color:#F2F4F1}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-600);
}
.btn-link svg{transition:transform .2s var(--ease)}
.btn-link:hover svg{transform:translateX(4px)}
.menu-btn{display:none}
@media (max-width:1099px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .header-cta{display:none}
}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,20,19,.42);opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);z-index:90;
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:var(--surface);
  z-index:100;transform:translateX(102%);transition:transform .32s var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
  box-shadow:-16px 0 40px -24px rgba(11,20,19,.4);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer a.d-link{
  display:flex;align-items:center;min-height:48px;font-size:16px;font-weight:500;
  color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer a.d-link:hover,.drawer a.d-link.is-active{color:var(--brand-600)}
.drawer-foot{margin-top:auto;padding-top:24px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(247,246,242,.96) 0%,rgba(247,246,242,.9) 60%,var(--paper) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(11,74,66,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(11,74,66,.05) 1px,transparent 1px);
  background-size:64px 64px;mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 78%);
}
.page-hero .shell{position:relative;z-index:2;padding-top:56px;padding-bottom:56px}
@media (min-width:1024px){.page-hero .shell{padding-top:76px;padding-bottom:76px}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand-600)}
.crumbs span.sep{opacity:.6}
.crumbs b{color:var(--ink-700);font-weight:600}
.hero-grid{display:grid;gap:40px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:56px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--brand-600);color:var(--brand-700);background:rgba(255,255,255,.6);
  font-size:12px;font-weight:600;letter-spacing:.08em;margin-bottom:20px;
}
.page-hero h1{
  font-size:clamp(28px,3.6vw,44px);font-weight:800;color:var(--ink-900);line-height:1.18;max-width:16em;
}
.hero-sub{margin-top:18px;font-size:16px;color:var(--ink-500);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.search-box{
  display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-btn);padding:0 16px;height:52px;margin-top:28px;max-width:520px;
  box-shadow:var(--shadow-card);
}
.search-box input{border:none;outline:none;background:transparent;flex:1;height:100%;font-size:15px}
.search-box input::placeholder{color:#9AA3A1}
.hero-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-block);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.hero-side img{width:100%;height:200px;object-fit:cover}
.hero-side-body{padding:22px}
.hero-side-body h2{font-size:16px;font-weight:700;color:var(--ink-700);letter-spacing:0}
.hero-side-body ul{margin-top:14px}
.hero-side-body li{
  display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--ink-500);
  padding:9px 0;border-bottom:1px dashed var(--line);
}
.hero-side-body li:last-child{border-bottom:none}
.hero-side-body li svg{flex-shrink:0;margin-top:4px}

/* ---------- section base ---------- */
main{display:block}
.band{padding:56px 0}
@media (min-width:768px){.band{padding:72px 0}}
@media (min-width:1024px){.band{padding:96px 0}}
.band-tight{padding:44px 0}
@media (min-width:1024px){.band-tight{padding:64px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:800;color:var(--ink-900)}
.section-head p{margin-top:12px;font-size:16px;color:var(--muted)}
.label-mini{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--brand-600);text-transform:uppercase;margin-bottom:10px;display:block}

/* ---------- quick entries ---------- */
.quick-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:640px){.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.quick-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}}
.q-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-card);transition:all .28s var(--ease);display:block;height:100%;
}
.q-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#CFD7D3}
.q-icon{
  width:44px;height:44px;border-radius:12px;background:rgba(15,92,82,.08);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);margin-bottom:18px;
}
.q-card h3{font-size:18px;font-weight:700;color:var(--ink-700);letter-spacing:0}
.q-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75}
.q-card .q-more{margin-top:16px;font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}

/* ---------- doc layout ---------- */
.doc-wrap{display:grid;gap:32px;grid-template-columns:1fr;align-items:start}
@media (min-width:1024px){
  .doc-wrap{grid-template-columns:248px minmax(0,1fr);gap:56px}
}
.toc{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.toc{position:sticky;top:96px}}
.toc h4{font-size:12px;letter-spacing:.12em;color:var(--muted);font-weight:700;margin-bottom:14px}
.toc a{
  display:block;font-size:14px;color:var(--ink-500);padding:9px 0 9px 12px;
  border-left:2px solid transparent;transition:all .2s var(--ease);
}
.toc a:hover,.toc a.on{color:var(--brand-600);border-left-color:var(--brand-600);background:rgba(15,92,82,.05)}
.toc .toc-cta{margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}

.doc-body{min-width:0}
.doc-section{padding-bottom:48px;margin-bottom:48px;border-bottom:1px solid var(--line)}
.doc-section:last-of-type{border-bottom:none;margin-bottom:0;padding-bottom:0}
.doc-section h2{font-size:clamp(22px,2.3vw,30px);font-weight:800;color:var(--ink-900);position:relative;padding-left:16px}
.doc-section h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;background:var(--accent-400)}
.doc-section > p.lead{margin-top:14px;font-size:15px;color:var(--muted);max-width:720px}
.doc-section h3{font-size:19px;font-weight:700;color:var(--ink-700);margin-top:32px;letter-spacing:0}

/* steps */
.steps{margin-top:28px;counter-reset:step}
.step{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:18px;
  padding:20px 0;border-bottom:1px solid var(--line);position:relative;
}
.step:last-child{border-bottom:none}
.step-num{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;position:relative;z-index:2;
}
.step:hover .step-num{border-color:var(--accent-400);background:rgba(198,242,78,.18)}
.step h3{margin:6px 0 6px;font-size:17px;font-weight:700;color:var(--ink-700);letter-spacing:0}
.step p{font-size:14px;color:var(--muted);line-height:1.8}
.step .tag-row{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}

/* tags */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.04em;background:rgba(15,92,82,.08);color:var(--brand-700);
}
.tag-outline{background:transparent;border:1px solid var(--line);color:var(--muted)}
.tag-warn{background:rgba(255,106,61,.12);color:#B53A16}

/* topic list */
.topic-list{margin-top:26px;border-top:1px solid var(--line)}
.topic-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) 24px;gap:16px;align-items:center;
  padding:20px 10px;border-bottom:1px solid var(--line);transition:background .2s var(--ease);
}
.topic-row:hover{background:#FDFDFB}
.topic-row .idx{font-size:13px;font-weight:700;color:var(--brand-600);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.topic-row h3{font-size:17px;font-weight:700;color:var(--ink-700);letter-spacing:0}
.topic-row p{font-size:14px;color:var(--muted);margin-top:6px}
.topic-row .arrow{color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease)}
.topic-row:hover .arrow{transform:translateX(4px);color:var(--brand-600)}

/* figure */
.doc-figure{margin-top:26px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-card)}
.doc-figure img{width:100%;height:280px;object-fit:cover}
.doc-figure figcaption{font-size:13px;color:var(--muted);padding:12px 18px;border-top:1px solid var(--line);background:#FCFBF8}

/* faq */
.faq-list{margin-top:24px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-700);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand-600)}
.faq-q .pm{
  flex-shrink:0;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--brand-700);
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.faq-item.open .faq-q{color:var(--brand-700)}
.faq-item.open .pm{transform:rotate(45deg);background:var(--accent-400);border-color:var(--accent-400);color:var(--ink-900)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s var(--ease)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{font-size:15px;color:var(--muted);line-height:1.85;padding:0 4px 22px;max-width:760px}

/* notice list */
.notice-list{margin-top:20px}
.notice-list li{
  position:relative;padding-left:22px;font-size:14px;color:var(--ink-500);margin-bottom:10px;
}
.notice-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:999px;background:var(--accent-400);
}

/* contact */
.contact-wrap{display:grid;gap:28px;grid-template-columns:1fr}
@media (min-width:1024px){.contact-wrap{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px}}
.contact-info li{
  display:flex;gap:12px;align-items:flex-start;padding:16px 0;border-bottom:1px dashed rgba(242,244,241,.16);
  font-size:15px;color:rgba(242,244,241,.85);
}
.contact-info li svg{flex-shrink:0;margin-top:4px}
.form-card{
  background:var(--surface);border-radius:var(--r-block);padding:26px;box-shadow:0 24px 60px -32px rgba(0,0,0,.6);
}
@media (min-width:768px){.form-card{padding:32px}}
.form-card h3{font-size:20px;font-weight:800;color:var(--ink-900);letter-spacing:0}
.form-card .form-hint{font-size:13px;color:var(--muted);margin-top:8px}
.field{margin-top:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field .req{display:inline-block;width:6px;height:6px;border-radius:999px;background:var(--accent-600);margin-left:6px;vertical-align:middle}
.field input,.field select,.field textarea{
  width:100%;height:48px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:#FCFCFA;padding:0 14px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 4px rgba(15,92,82,.12);background:#fff;
}
.check-row{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:13px;color:var(--muted)}
.check-row input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand-600);flex-shrink:0}
.form-submit{margin-top:22px;width:100%}
@media (min-width:768px){.form-submit{width:auto;min-width:200px}}
.form-ok{
  display:none;margin-top:18px;padding:14px 16px;border-radius:var(--r-btn);
  background:rgba(198,242,78,.24);border:1px solid rgba(15,92,82,.24);
  font-size:14px;font-weight:600;color:var(--brand-700);
}
.form-ok.show{display:block}

/* dark band */
.dark-band{background:var(--ink-900);color:#F2F4F1;position:relative;overflow:hidden}
.dark-band::before{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,242,78,.16),transparent 68%);
}
.dark-band h2{color:#F2F4F1;font-size:clamp(24px,2.4vw,32px)}
.dark-band .muted-light{color:rgba(242,244,241,.72)}
.dark-band .card-outline{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);padding:22px}

/* stats */
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{padding:26px 18px;border-right:1px solid var(--line)}
@media (max-width:1023px){.stat:nth-child(2n){border-right:none}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:clamp(24px,2.6vw,34px);font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted)}

/* cta bar */
.cta-bar{
  background:linear-gradient(90deg,var(--brand-700),var(--brand-600));
  border-radius:var(--r-block);padding:28px;display:flex;flex-wrap:wrap;gap:20px;
  align-items:center;justify-content:space-between;color:#fff;
}
@media (min-width:768px){.cta-bar{padding:36px 40px}}
.cta-bar h2{color:#fff;font-size:clamp(20px,2.2vw,28px)}
.cta-bar p{color:rgba(255,255,255,.82);font-size:14px;margin-top:8px;max-width:560px}
.cta-bar .btn-white{background:#fff;color:var(--ink-900);height:48px;padding:0 24px;border-radius:var(--r-btn);font-weight:700;display:inline-flex;align-items:center;gap:8px;transition:all .2s var(--ease)}
.cta-bar .btn-white:hover{background:var(--accent-400);color:var(--ink-900);transform:translateY(-1px)}

/* footer */
.site-footer{background:var(--ink-900);color:#F2F4F1;margin-top:0}
.site-footer .brand-text b{color:#F2F4F1}
.site-footer .brand-text span{color:var(--accent-400)}
.site-footer h4{font-size:13px;font-weight:700;letter-spacing:.12em;color:rgba(242,244,241,.6);margin-bottom:14px}
.site-footer .foot-link{display:block;font-size:14px;color:rgba(242,244,241,.82);padding:6px 0;position:relative}
.site-footer .foot-link:hover{color:var(--accent-400)}
.site-footer .foot-link::after{content:"";position:absolute;left:0;bottom:2px;height:1px;width:0;background:var(--accent-400);transition:width .22s var(--ease)}
.site-footer .foot-link:hover::after{width:100%}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(242,244,241,.55);
}
.footer-bottom a{color:rgba(242,244,241,.6)}
.footer-bottom a:hover{color:var(--accent-400)}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.001ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}