/* roulang page: index */
:root{
    --ink:#111318;
    --ink-soft:#4A4F59;
    --paper:#F6F4EF;
    --surface:#FFFFFF;
    --line:#E4E0D6;
    --accent:#FF5A1F;
    --accent-deep:#D63F0C;
    --ink-block:#0E0F13;
    --gold:#FFC93C;
    --radius-card:14px;
    --radius-img:12px;
    --shadow-hover:0 12px 28px rgba(17,19,24,.08);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  .site-body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  .site-body img{max-width:100%;display:block}
  .site-body a{color:inherit;text-decoration:none}
  .site-body button,.site-body input{font:inherit}
  .site-body p{margin:0}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
  @media (min-width:768px){.container{padding-left:32px;padding-right:32px}}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,244,239,.94);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex;align-items:center;gap:16px;min-height:72px}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:6px 0}
  .brand-mark{
    width:36px;height:36px;border-radius:10px;background:var(--ink);color:var(--paper);
    display:grid;place-items:center;font-weight:800;font-size:13px;letter-spacing:.02em;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25}
  .brand-text strong{font-size:15px;font-weight:700;letter-spacing:-.01em}
  .brand-text em{font-size:11px;color:var(--ink-soft);font-style:normal;letter-spacing:.04em}
  .chip-nav{
    display:flex;align-items:center;gap:4px;margin:0 auto;
    background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:4px;
    overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;
  }
  .chip-nav::-webkit-scrollbar{display:none}
  .chip{
    display:inline-flex;align-items:center;height:44px;padding:0 16px;border-radius:999px;
    font-size:14px;color:var(--ink-soft);white-space:nowrap;scroll-snap-align:start;
    transition:background-color 200ms var(--ease),color 200ms var(--ease);
  }
  .chip:hover{background:#F1EEE7;color:var(--ink)}
  .chip.active{background:var(--ink);color:var(--paper)}
  .chip.active:hover{background:var(--ink);color:var(--paper)}
  .nav-cta{flex:0 0 auto}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;text-align:center;
    transition:background-color 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease);
    min-width:132px;
  }
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-deep)}
  .btn-primary .arrow{transition:transform 200ms var(--ease)}
  .btn-primary:hover .arrow{transform:translateX(3px)}
  .btn-ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
  .btn-ghost:hover{background:#F1EEE7;border-color:#D9D3C6}
  .btn-block{width:100%}

  /* ---------- hero ---------- */
  .hero{
    position:relative;overflow:hidden;
    background-image:
      repeating-linear-gradient(0deg,rgba(17,19,24,.032) 0 1px,transparent 1px 24px),
      repeating-linear-gradient(90deg,rgba(17,19,24,.032) 0 1px,transparent 1px 24px);
  }
  .hero-grid{display:grid;grid-template-columns:1fr;gap:40px;padding-top:52px;padding-bottom:60px}
  @media (min-width:1024px){
    .hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:560px;padding-top:72px;padding-bottom:72px}
  }
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;background:var(--surface);
    border:1px solid var(--line);border-radius:999px;padding:6px 14px;
    font-size:13px;color:var(--ink-soft);letter-spacing:.02em;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
  .hero-title{
    font-size:clamp(2.1rem,4.6vw,3.6rem);line-height:1.08;letter-spacing:-.02em;
    font-weight:800;margin:20px 0 16px;color:var(--ink);
  }
  .hero-sub{font-size:17px;color:var(--ink-soft);max-width:520px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-trust{list-style:none;display:flex;flex-wrap:wrap;gap:12px 26px;padding:0;margin:30px 0 0;border-top:1px solid var(--line);padding-top:22px}
  .trust-item{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-soft)}
  .trust-item .tick{
    width:16px;height:16px;border-radius:50%;background:rgba(255,90,31,.12);
    display:grid;place-items:center;color:var(--accent);font-size:10px;font-weight:700;
  }
  .hero-visual{position:relative}
  .hero-figure{
    margin:0;border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden;
    aspect-ratio:4/3;background:#EAE6DD;
  }
  .hero-figure img{width:100%;height:100%;object-fit:cover}
  .status-card{
    position:absolute;right:14px;top:14px;display:flex;align-items:center;gap:10px;
    background:var(--surface);border:1px solid var(--line);border-radius:12px;
    padding:10px 14px;box-shadow:0 8px 20px rgba(17,19,24,.06);
  }
  .status-card strong{display:block;font-size:13.5px;font-weight:700}
  .status-card span{display:block;font-size:12px;color:var(--ink-soft)}
  .pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,90,31,.16);animation:pulse 2.4s var(--ease) infinite}
  @keyframes pulse{
    0%,100%{box-shadow:0 0 0 4px rgba(255,90,31,.16)}
    50%{box-shadow:0 0 0 8px rgba(255,90,31,.06)}
  }

  /* ---------- sections ---------- */
  .section{padding-top:64px;padding-bottom:64px}
  @media (min-width:768px){.section{padding-top:96px;padding-bottom:96px}}
  .section-tint{background:#F1EEE7}
  .section-head{max-width:740px;margin-bottom:38px}
  .section-title{
    font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;letter-spacing:-.01em;
    font-weight:700;margin:0 0 12px;color:var(--ink);
  }
  .section-desc{color:var(--ink-soft);font-size:16px}
  .section-head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:38px}
  .link-more{
    font-size:14.5px;font-weight:600;color:var(--ink);border-bottom:2px solid var(--accent);
    padding-bottom:2px;transition:color 200ms var(--ease);
  }
  .link-more:hover{color:var(--accent)}

  /* ---------- steps ---------- */
  .steps{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr);gap:32px}}
  .step{position:relative;padding-top:22px;border-top:1px dashed var(--line)}
  .step::before{
    content:"";position:absolute;left:0;top:-4px;width:8px;height:8px;border-radius:50%;
    background:var(--paper);border:1px solid var(--line);
  }
  .step-num{
    display:block;font-size:clamp(2.6rem,4vw,3.5rem);line-height:1;font-weight:800;
    letter-spacing:-.03em;color:var(--accent);margin-bottom:14px;font-variant-numeric:tabular-nums;
  }
  .step h3{font-size:1.2rem;font-weight:600;margin:0 0 8px;line-height:1.35}
  .step p{font-size:15px;color:var(--ink-soft)}

  /* ---------- capability cards ---------- */
  .cap-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){.cap-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.cap-grid{grid-template-columns:repeat(4,1fr)}}
  .cap-card{
    display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .cap-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .cap-img{aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);background:#EFEBE2}
  .cap-img img{width:100%;height:100%;object-fit:cover;transition:transform 200ms var(--ease)}
  .cap-card:hover .cap-img img{transform:scale(1.03)}
  .cap-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
  .cap-body h3{margin:0;font-size:1.05rem;font-weight:600;line-height:1.4}
  .cap-body p{font-size:14.5px;color:var(--ink-soft)}
  .badge{
    display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
    background:#F1EEE7;border:1px solid var(--line);border-radius:6px;
    padding:3px 8px;font-size:12px;color:var(--ink-soft);letter-spacing:.02em;
  }
  .badge-gold{background:rgba(255,201,60,.16);border-color:rgba(255,201,60,.5);color:#8A6400}

  /* ---------- channel cards ---------- */
  .channel-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.channel-grid{grid-template-columns:repeat(2,1fr)}}
  .channel-card{
    display:flex;gap:16px;padding:16px;background:var(--surface);
    border:1px solid var(--line);border-radius:var(--radius-card);
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  }
  .channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D9D3C6}
  .channel-cover{width:96px;height:96px;flex:0 0 auto;border-radius:var(--radius-img);overflow:hidden;background:#EFEBE2}
  .channel-cover img{width:100%;height:100%;object-fit:cover;transition:transform 200ms var(--ease)}
  .channel-card:hover .channel-cover img{transform:scale(1.03)}
  .channel-body h3{margin:0 0 6px;font-size:1.05rem;font-weight:600}
  .channel-body p{font-size:14px;color:var(--ink-soft)}
  .channel-link{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13.5px;font-weight:600;color:var(--accent)}

  /* ---------- proof ---------- */
  .proof-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:1024px){.proof-grid{grid-template-columns:7fr 5fr}}
  .proof-main{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden}
  .proof-main figure{margin:0;aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:#EFEBE2}
  .proof-main figure img{width:100%;height:100%;object-fit:cover}
  .proof-main-body{padding:24px}
  .proof-main-body h3{margin:0 0 10px;font-size:1.25rem;font-weight:600;line-height:1.4}
  .proof-main-body p{color:var(--ink-soft);font-size:15px}
  .metrics{display:flex;flex-wrap:wrap;gap:26px;margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
  .metric-num{display:block;font-size:1.9rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}
  .metric-label{font-size:13px;color:var(--ink-soft)}
  .proof-side{display:grid;gap:20px;align-content:start}
  .proof-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px}
  .proof-card h3{margin:0 0 8px;font-size:1.02rem;font-weight:600}
  .proof-card p{font-size:14.5px;color:var(--ink-soft)}
  .bar{height:8px;border-radius:999px;background:#EFEBE2;overflow:hidden;margin-top:12px}
  .bar-fill{height:100%;border-radius:999px;background:var(--accent)}
  .bar-row + .bar-row{margin-top:16px}
  .bar-label{display:flex;justify-content:space-between;font-size:13.5px;color:var(--ink-soft)}
  .bar-label b{color:var(--ink);font-weight:600;font-variant-numeric:tabular-nums}

  /* ---------- news / cms ---------- */
  .news-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:768px){.news-grid{grid-template-columns:repeat(3,1fr)}}
  .news-card{
    display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;
    transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
  }
  .news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#D9D3C6}
  .news-card-lead{grid-column:span 2}
  @media (max-width:767px){.news-card-lead{grid-column:span 1}}
  .news-cover{aspect-ratio:16/9;overflow:hidden;border-bottom:1px solid var(--line);background:#EFEBE2}
  .news-card-lead .news-cover{aspect-ratio:16/7}
  .news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 200ms var(--ease)}
  .news-card:hover .news-cover img{transform:scale(1.03)}
  .news-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
  .news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-soft);letter-spacing:.02em}
  .news-title{
    margin:0;font-size:1.05rem;font-weight:600;line-height:1.45;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-card-lead .news-title{font-size:1.28rem}
  .news-desc{
    font-size:14.5px;color:var(--ink-soft);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--ink)}
  .news-card:hover .news-more{color:var(--accent)}
  .empty-state{
    grid-column:1/-1;background:#F1EEE7;border:1px dashed var(--line);border-radius:var(--radius-card);
    padding:52px 24px;display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  }
  .empty-icon{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-soft)}
  .empty-state p{color:var(--ink-soft);font-size:15px}

  /* ---------- faq ---------- */
  .faq-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:1024px){.faq-grid{grid-template-columns:5fr 7fr;gap:56px}}
  .faq-intro p{color:var(--ink-soft);font-size:15px}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
    gap:16px;padding:20px 0;font-size:16px;font-weight:600;color:var(--ink);
    transition:color 200ms var(--ease),padding-left 200ms var(--ease),border-color 200ms var(--ease);
    border-left:3px solid transparent;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--accent)}
  .faq-item[open] summary{padding-left:14px;border-left-color:var(--accent)}
  .faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px;margin-top:3px}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--ink-soft);border-radius:2px;
    transition:transform 200ms var(--ease),opacity 200ms var(--ease),background-color 200ms var(--ease);
  }
  .faq-icon::before{left:0;top:10px;width:22px;height:1.5px}
  .faq-icon::after{left:10px;top:0;width:1.5px;height:22px}
  .faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
  .faq-item[open] .faq-icon::before{background:var(--accent)}
  .faq-answer{padding:0 0 22px;color:var(--ink-soft);font-size:15px;line-height:1.8}
  .faq-item[open] .faq-answer{padding-left:14px}

  /* ---------- cta ---------- */
  .cta-block{
    position:relative;background:var(--ink-block);color:var(--paper);overflow:hidden;
    padding-top:64px;padding-bottom:64px;
    background-image:repeating-linear-gradient(45deg,rgba(246,244,239,.028) 0 1px,transparent 1px 24px);
  }
  @media (min-width:768px){.cta-block{padding-top:88px;padding-bottom:88px}}
  .cta-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media (min-width:1024px){.cta-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:center}}
  .cta-block h2{font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.15;letter-spacing:-.01em;font-weight:700;margin:0 0 14px;color:var(--paper)}
  .cta-block .cta-lead{color:rgba(246,244,239,.72);font-size:16px;max-width:520px}
  .cta-trust{list-style:none;display:flex;flex-wrap:wrap;gap:12px 24px;padding:0;margin:26px 0 0;font-size:13.5px;color:rgba(246,244,239,.72)}
  .cta-trust li{display:flex;align-items:center;gap:8px}
  .cta-trust .tick{width:16px;height:16px;border-radius:50%;background:rgba(255,90,31,.22);display:grid;place-items:center;color:var(--accent);font-size:10px;font-weight:700}
  .cta-form{
    background:rgba(246,244,239,.045);border:1px solid rgba(246,244,239,.14);
    border-radius:var(--radius-card);padding:24px;display:grid;gap:16px;
  }
  .field label{display:block;font-size:13px;letter-spacing:.02em;color:rgba(246,244,239,.72);margin-bottom:8px}
  .field input{
    width:100%;height:46px;border-radius:10px;padding:0 14px;
    border:1px solid rgba(246,244,239,.18);background:rgba(14,15,19,.55);color:var(--paper);
    transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .field input::placeholder{color:rgba(246,244,239,.38)}
  .field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(255,90,31,.35)}
  .form-note{font-size:12.5px;color:rgba(246,244,239,.5)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink-block);color:rgba(246,244,239,.72);border-top:1px solid rgba(246,244,239,.1);padding-top:64px}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
  @media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}}
  .footer-col h4{font-size:13px;letter-spacing:.08em;font-weight:600;color:rgba(246,244,239,.55);margin:0 0 14px}
  .footer-col a{display:block;padding:7px 0;font-size:14.5px;color:rgba(246,244,239,.78);transition:color 200ms var(--ease)}
  .footer-col a:hover{color:var(--accent)}
  .footer-brand strong{display:block;color:var(--paper);font-size:16px;font-weight:700;margin-bottom:10px}
  .footer-brand p{font-size:14px;color:rgba(246,244,239,.62);max-width:320px}
  .footer-bottom{
    margin-top:48px;border-top:1px solid rgba(246,244,239,.1);padding:22px 0;
    display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
    font-size:13px;color:rgba(246,244,239,.5);
  }
  .footer-bottom a{color:rgba(246,244,239,.72)}
  .footer-bottom a:hover{color:var(--accent)}

  /* ---------- responsive tweaks ---------- */
  @media (max-width:1023px){
    .nav-inner{flex-wrap:wrap;padding:12px 0;gap:12px}
    .chip-nav{order:3;width:100%;margin:0}
    .nav-cta{margin-left:auto}
  }
  @media (max-width:520px){
    .hero-actions .btn{width:100%}
    .hero-trust{gap:10px 18px}
    .metrics{gap:20px}
    .metric-num{font-size:1.6rem}
    .brand-text em{display:none}
  }
  @media (prefers-reduced-motion: reduce){
    *{animation:none !important;transition:none !important}
  }

/* roulang page: category1 */
:root{
  --ink:#111318;
  --ink-soft:#4A4F59;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --accent:#FF5A1F;
  --accent-deep:#D63F0C;
  --ink-block:#0E0F13;
  --gold:#FFC93C;
  --r-card:14px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-hover:0 12px 28px rgba(17,19,24,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;gap:16px;
  min-height:68px;padding-top:10px;padding-bottom:10px;
  flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-weight:800;font-size:13px;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-soft);letter-spacing:.04em}
.chip-nav{
  display:flex;align-items:center;gap:4px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:4px;overflow-x:auto;scrollbar-width:none;
  flex:1 1 auto;min-width:0;scroll-snap-type:x proximity;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;padding:9px 15px;border-radius:var(--r-pill);
  font-size:14px;color:var(--ink-soft);white-space:nowrap;
  transition:background 200ms var(--ease),color 200ms var(--ease);
  scroll-snap-align:start;
}
.chip:hover{background:#EFEDE6;color:var(--ink)}
.chip.active{background:var(--ink);color:var(--paper)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--surface);border-color:var(--ink)}
.nav-cta{flex-shrink:0;min-height:40px;padding:0 18px;font-size:14px}
@media(max-width:1023px){
  .nav-inner{gap:12px}
  .brand-text em{display:none}
  .chip-nav{order:3;flex:1 1 100%;width:100%}
}
@media(max-width:520px){
  .brand-mark{width:34px;height:34px;font-size:12px;border-radius:9px}
  .brand-text strong{font-size:13px}
  .nav-cta{min-height:38px;padding:0 14px;font-size:13px}
  .chip{font-size:13px;padding:8px 12px}
}

/* ===== 通用板块 ===== */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:88px 0}}
.section-head{max-width:760px;margin-bottom:36px}
.kicker{
  display:block;font-size:13px;letter-spacing:.16em;font-weight:600;
  color:var(--accent);margin-bottom:12px;
}
h1{
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  line-height:1.08;letter-spacing:-.02em;font-weight:800;
  margin:0 0 18px;
}
h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;letter-spacing:-.01em;font-weight:700;
  margin:0 0 14px;
}
h3{font-size:1.125rem;line-height:1.35;font-weight:600;margin:0 0 8px}
.section-head p{margin:0;color:var(--ink-soft);font-size:16px}
.meta-line{font-size:13px;letter-spacing:.02em;color:var(--ink-soft)}

/* ===== 页面导语 ===== */
.page-hero{padding:36px 0 8px}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;letter-spacing:.02em;color:var(--ink-soft);margin-bottom:20px;
}
.crumb a{transition:color 200ms var(--ease)}
.crumb a:hover{color:var(--accent)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--ink-soft);
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-pill);padding:6px 14px;margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.lead{font-size:17px;color:var(--ink-soft);max-width:780px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.stat-row{
  display:grid;grid-template-columns:1fr;gap:1px;
  margin-top:40px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
@media(min-width:640px){.stat-row{grid-template-columns:repeat(3,1fr)}}
.stat{background:var(--surface);padding:20px 22px}
.stat b{display:block;font-size:1.6rem;font-weight:800;line-height:1.2}
.stat span{font-size:13px;color:var(--ink-soft)}

/* ===== 左文右图 ===== */
.intro-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){
  .intro-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center}
}
.intro-copy p{margin:0 0 18px;color:var(--ink-soft);font-size:16px}
.intro-copy p strong{color:var(--ink);font-weight:600}
.media-frame{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);aspect-ratio:4/3;
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.media-frame:hover img{transform:scale(1.03)}
.status-card{
  position:absolute;right:14px;top:14px;display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-radius:10px;padding:8px 12px;font-size:12px;color:var(--ink-soft);
}
.status-card .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}

/* ===== 编号清单 ===== */
.num-list{border-top:1px solid var(--line)}
.num-item{
  display:grid;grid-template-columns:auto 1fr;gap:18px;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:padding-left 200ms var(--ease);
}
.num-item:hover{padding-left:8px}
.num-no{
  font-size:clamp(2rem,3vw,2.6rem);font-weight:800;line-height:1;
  color:var(--accent);font-variant-numeric:tabular-nums;
}
.num-item p{margin:0;color:var(--ink-soft);font-size:15px;max-width:740px}
@media(min-width:768px){
  .num-item{grid-template-columns:110px 1fr;gap:24px;padding:32px 0}
}

/* ===== 场景卡片 ===== */
.card-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.card p{margin:0;color:var(--ink-soft);font-size:15px}
.card .badge{
  display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--ink-soft);
  border:1px solid var(--line);border-radius:6px;padding:3px 9px;margin-bottom:14px;
  background:var(--paper);
}
.card .badge.is-new{color:var(--gold);border-color:var(--gold)}
.card-thumb{
  border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;margin-bottom:18px;
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}

/* ===== FAQ ===== */
.faq-grid{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){.faq-grid{grid-template-columns:5fr 7fr;gap:48px}}
.faq-side p{margin:0;color:var(--ink-soft);font-size:16px;max-width:420px}
.faq-list{padding-left:0}
@media(min-width:768px){.faq-list{padding-left:16px}}
.faq-item{position:relative;border-bottom:1px solid var(--line)}
.faq-item::before{
  content:"";position:absolute;left:-14px;top:20px;bottom:20px;width:3px;
  background:var(--accent);opacity:0;transition:opacity 200ms var(--ease);border-radius:2px;
}
@media(min-width:768px){.faq-item::before{left:-16px}}
.faq-item.open::before{opacity:1}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;text-align:left;min-height:44px;padding:18px 0;
  font-size:16px;font-weight:600;line-height:1.5;
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;
  font-size:15px;color:var(--ink-soft);transition:transform 200ms var(--ease),background 200ms var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--paper)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{margin:0 0 20px;color:var(--ink-soft);font-size:15px;line-height:1.8}

/* ===== CTA ===== */
.cta-block{position:relative;background:var(--ink-block);color:var(--paper);overflow:hidden}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.14;
}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(246,244,239,.045) 0 1px,transparent 1px 24px);
}
.cta-inner{position:relative;z-index:2;padding:64px 0}
@media(min-width:768px){.cta-inner{padding:88px 0}}
.cta-block h2{color:var(--paper);max-width:640px}
.cta-block .cta-sub{color:rgba(246,244,239,.7);max-width:620px;margin:0 0 28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.cta-block .btn-ghost{border-color:rgba(246,244,239,.32);color:var(--paper)}
.cta-block .btn-ghost:hover{background:rgba(246,244,239,.08);border-color:rgba(246,244,239,.6)}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;font-size:13px;color:rgba(246,244,239,.62)}
.trust-row span{display:flex;align-items:center;gap:8px}
.trust-row i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.cta-form{
  position:relative;z-index:2;margin-top:36px;padding-top:32px;
  border-top:1px solid rgba(246,244,239,.14);
  display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;
}
.field{display:flex;flex-direction:column;gap:8px;flex:1 1 260px;min-width:0}
.field label{font-size:13px;letter-spacing:.06em;color:rgba(246,244,239,.62)}
.field input{
  height:44px;border-radius:10px;padding:0 14px;
  background:rgba(246,244,239,.06);border:1px solid rgba(246,244,239,.2);
  color:var(--paper);transition:border-color 200ms var(--ease);
}
.field input::placeholder{color:rgba(246,244,239,.42)}
.field input:focus{border-color:var(--accent);outline:none}

/* ===== 页脚 ===== */
.site-footer{background:var(--ink-block);color:rgba(246,244,239,.78);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr}}
.footer-col h4{
  font-size:13px;letter-spacing:.14em;font-weight:600;
  color:rgba(246,244,239,.5);margin:0 0 14px;
}
.footer-col a{display:block;font-size:14px;padding:6px 0;color:rgba(246,244,239,.78);transition:color 200ms var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-brand strong{display:block;font-size:17px;font-weight:800;color:var(--paper);margin-bottom:10px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(246,244,239,.62);margin:0}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(246,244,239,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:rgba(246,244,239,.5);
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --ink:#111318;
  --ink-soft:#4A4F59;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --accent:#FF5A1F;
  --accent-deep:#D63F0C;
  --ink-block:#0E0F13;
  --gold:#FFC93C;
  --radius-card:14px;
  --radius-img:12px;
  --radius-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%);
}
.nav-inner{
  display:flex;align-items:center;gap:18px;
  min-height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-height:44px}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--ink);color:var(--paper);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:-.01em}
.brand-text em{font-size:11px;font-style:normal;color:var(--ink-soft);letter-spacing:.04em}
.chip-nav{
  display:flex;align-items:center;gap:4px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-pill);padding:4px;
  overflow-x:auto;scroll-snap-type:x mandatory;
  -ms-overflow-style:none;scrollbar-width:none;
  margin-left:auto;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 16px;min-height:38px;
  border-radius:var(--radius-pill);
  font-size:14px;color:var(--ink-soft);white-space:nowrap;
  scroll-snap-align:start;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.chip:hover{background:#EFEBE2;color:var(--ink)}
.chip.active{background:var(--ink);color:var(--paper)}
.nav-cta{flex:0 0 auto;margin-left:8px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:44px;padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;
  border:1px solid transparent;cursor:pointer;
  transition:background 200ms var(--ease),color 200ms var(--ease),box-shadow 200ms var(--ease),transform 200ms var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);box-shadow:0 12px 28px rgba(255,90,31,.22)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface);box-shadow:0 12px 28px rgba(17,19,24,.08)}
.btn-light{background:var(--paper);color:var(--ink)}
.btn-light:hover{background:#fff}
.btn-outline-light{background:transparent;color:var(--paper);border-color:rgba(246,244,239,.32)}
.btn-outline-light:hover{background:rgba(246,244,239,.1)}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,#FBF9F5 0%,var(--paper) 100%);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(17,19,24,.04) 0 1px,transparent 1px 24px),
                   repeating-linear-gradient(90deg,rgba(17,19,24,.04) 0 1px,transparent 1px 24px);
  pointer-events:none;
}
.article-hero-inner{position:relative;padding:32px 0 40px}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--ink-soft);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--ink-soft);transition:color 200ms var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb em{font-style:normal;color:var(--ink);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(1.9rem,4vw,3.1rem);
  line-height:1.12;letter-spacing:-.02em;font-weight:800;
  max-width:900px;
}
.article-lede{
  margin-top:16px;max-width:720px;color:var(--ink-soft);font-size:16px;line-height:1.8;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  margin-top:22px;font-size:13px;letter-spacing:.02em;color:var(--ink-soft);
}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:6px;
  background:rgba(255,90,31,.1);color:var(--accent-deep);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-gold{background:rgba(255,201,60,.22);color:#8A6200}

/* ---------- 正文布局 ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:80px 0}}
.article-layout{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start}
}
.article-body{
  max-width:760px;font-size:17px;line-height:1.9;color:#20242C;
}
.article-body > * + *{margin-top:22px}
.article-body h2{
  position:relative;
  font-size:1.4rem;line-height:1.35;font-weight:700;letter-spacing:-.01em;
  color:var(--ink);padding-left:16px;margin-top:44px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.32em;
  width:3px;height:1.05em;background:var(--accent);border-radius:2px;
}
.article-body h3{font-size:1.15rem;line-height:1.4;font-weight:600;color:var(--ink);margin-top:32px}
.article-body p{color:#2B303A}
.article-body a{color:var(--accent-deep);border-bottom:1px solid rgba(214,63,12,.35)}
.article-body a:hover{color:var(--accent)}
.article-body ul,.article-body ol{padding-left:22px;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-top:10px;line-height:1.85;color:#2B303A}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{
  background:#FBF9F5;border-left:3px solid var(--accent);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  padding:18px 22px;color:var(--ink-soft);font-size:16px;
}
.article-body blockquote p{color:var(--ink-soft)}
.article-body img{border-radius:var(--radius-img);width:100%;height:auto}
.article-body figure figcaption{font-size:13px;color:var(--ink-soft);margin-top:10px;text-align:center}
.article-body strong{color:var(--ink);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;max-width:760px}
.tag{
  display:inline-flex;align-items:center;
  padding:7px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--ink-soft);
  transition:border-color 200ms var(--ease),color 200ms var(--ease)
}
.tag:hover{border-color:var(--accent);color:var(--accent-deep)}

.back-row{margin-top:32px;max-width:760px}

/* ---------- 侧栏 ---------- */
.side-card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);padding:22px;
}
@media (min-width:1024px){.side-sticky{position:sticky;top:104px}}
.side-card + .side-card{margin-top:20px}
.side-title{
  font-size:13px;letter-spacing:.08em;color:var(--ink-soft);
  text-transform:uppercase;margin-bottom:14px;
}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;border-bottom:1px solid var(--line);
  font-size:14px;line-height:1.6;color:#2B303A;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:8px;
  border-radius:50%;background:var(--accent);
}
.side-meta{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-soft);padding:9px 0}
.side-meta strong{color:var(--ink);font-weight:600}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;font-size:14px;color:#2B303A;
  border-bottom:1px solid var(--line);
  transition:color 200ms var(--ease)
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--accent-deep)}
.side-links a span{color:var(--accent);font-size:13px}

/* ---------- 相关推荐 ---------- */
.sec-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:32px;
}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;letter-spacing:-.01em;font-weight:700}
.sec-head p{color:var(--ink-soft);font-size:14px;margin-top:8px;max-width:560px}
.text-link{
  color:var(--accent-deep);font-size:14px;font-weight:600;
  border-bottom:1px solid rgba(214,63,12,.4);padding-bottom:2px;
  transition:color 200ms var(--ease)
}
.text-link:hover{color:var(--accent)}
.related-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media (min-width:900px){
  .related-grid{grid-template-columns:1.15fr .85fr .85fr}
}
.card{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--surface);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(17,19,24,.08);border-color:#D6D0C2}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:#EDE9E0}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;line-height:1.45;color:var(--ink)}
.card-desc{font-size:14px;color:var(--ink-soft);line-height:1.7}
.card-meta{font-size:13px;color:var(--ink-soft);margin-top:auto;letter-spacing:.02em}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-block);color:var(--paper);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(45deg,rgba(246,244,239,.04) 0 1px,transparent 1px 18px);
  pointer-events:none;
}
.cta-inner{position:relative;padding:64px 0}
@media (min-width:768px){.cta-inner{padding:88px 0}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.cta-grid{grid-template-columns:minmax(0,1fr) 380px;gap:56px;align-items:start}}
.cta-band h2{font-size:clamp(1.6rem,2.8vw,2.3rem);line-height:1.2;font-weight:700;letter-spacing:-.01em}
.cta-band p{color:rgba(246,244,239,.72);margin-top:14px;font-size:15px;line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:22px;margin-top:30px;font-size:13px;color:rgba(246,244,239,.62)}
.trust-row span{display:inline-flex;align-items:center;gap:8px}
.trust-row span::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
}
.form-card{
  background:rgba(246,244,239,.06);
  border:1px solid rgba(246,244,239,.14);
  border-radius:var(--radius-card);padding:24px;
}
.form-card label{display:block;font-size:13px;color:rgba(246,244,239,.72);margin-bottom:8px;letter-spacing:.04em}
.form-card input{
  width:100%;height:44px;padding:0 14px;
  border-radius:10px;border:1px solid rgba(246,244,239,.2);
  background:rgba(14,15,19,.5);color:var(--paper);
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease)
}
.form-card input::placeholder{color:rgba(246,244,239,.38)}
.form-card input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,90,31,.18);outline:none}
.form-row + .form-row{margin-top:16px}
.form-actions{margin-top:22px}
.form-actions .btn{width:100%}
.form-hint{margin-top:14px;font-size:12px;color:rgba(246,244,239,.5);line-height:1.7}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:#FBF9F5;padding:56px 24px;text-align:center;
}
.empty-state h2{font-size:1.25rem;font-weight:700;color:var(--ink)}
.empty-state p{color:var(--ink-soft);font-size:14px;margin-top:10px}
.empty-state .btn{margin-top:22px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-block);color:var(--paper);padding:64px 0 32px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer-col h4{
  font-size:13px;letter-spacing:.12em;color:rgba(246,244,239,.5);
  font-weight:600;margin-bottom:16px;
}
.footer-col a{
  display:block;min-height:36px;line-height:36px;
  font-size:14px;color:rgba(246,244,239,.78);
  transition:color 200ms var(--ease)
}
.footer-col a:hover{color:var(--accent)}
.footer-brand strong{display:block;font-size:17px;font-weight:800;margin-bottom:12px}
.footer-brand p{font-size:14px;color:rgba(246,244,239,.62);line-height:1.8;max-width:340px}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(246,244,239,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(246,244,239,.55);
}

/* ---------- 移动端 ---------- */
@media (max-width:1023px){
  .chip-nav{max-width:100%}
}
@media (max-width:768px){
  .nav-inner{min-height:64px;gap:10px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
  .brand-text em{display:none}
  .chip-nav{order:3;width:100%;margin-left:0}
  .nav-cta{margin-left:auto;padding:0 16px}
  .article-hero-inner{padding:24px 0 32px}
  .cta-actions .btn{width:100%}
  .trust-row{gap:14px}
}
@media (max-width:520px){
  .brand-mark{width:34px;height:34px;font-size:12px}
  .brand-text strong{font-size:14px}
  .chip{padding:8px 13px;font-size:13px}
  .article-body{font-size:16px}
  .cta-inner{padding:52px 0}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .card:hover{transform:none}
  .card:hover .card-media img{transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#111318;
  --ink-soft:#4A4F59;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --accent:#FF5A1F;
  --accent-deep:#D63F0C;
  --ink-block:#0E0F13;
  --gold:#FFC93C;
  --radius-card:14px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-badge:6px;
  --shadow-hover:0 12px 28px rgba(17,19,24,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
em{font-style:normal}
::selection{background:rgba(255,90,31,.18)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:var(--radius-badge);
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){
  .container{padding:0 32px}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(246,244,239,.94);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:10px;
  background:var(--ink);
  color:var(--paper);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:14px;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:15px;font-weight:700;letter-spacing:-.01em}
.brand-text em{font-size:11px;color:var(--ink-soft);letter-spacing:.06em}
.chip-nav{
  display:flex;
  align-items:center;
  gap:2px;
  padding:4px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  margin-left:auto;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:14px;
  color:var(--ink-soft);
  white-space:nowrap;
  scroll-snap-align:center;
  transition:background 200ms var(--ease),color 200ms var(--ease);
}
.chip:hover{background:rgba(17,19,24,.05);color:var(--ink)}
.chip.active{background:var(--ink);color:var(--paper);font-weight:600}
.nav-cta{
  flex:0 0 auto;
  margin-left:4px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep)}
.btn-primary:hover .btn-arrow{transform:translateX(2px)}
.btn-arrow{transition:transform 200ms var(--ease)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--surface);border-color:var(--ink)}
.btn-light{background:var(--paper);color:var(--ink-block)}
.btn-light:hover{background:#fff}

/* ---------- 顶部横幅 ---------- */
.banner{
  position:relative;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(102deg, rgba(246,244,239,.97) 0%, rgba(246,244,239,.92) 46%, rgba(246,244,239,.66) 100%),
    repeating-linear-gradient(45deg, rgba(17,19,24,.035) 0 1px, transparent 1px 24px),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover,auto,cover;
  background-position:center,center,center;
}
.banner-inner{padding:52px 0 48px}
@media (min-width:768px){
  .banner-inner{padding:72px 0 64px}
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-soft);
  margin-bottom:20px;
}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span.sep{color:var(--line)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius-badge);
  background:var(--surface);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--ink-soft);
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}
h1{
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  line-height:1.08;
  letter-spacing:-.02em;
  font-weight:800;
  max-width:18em;
}
.lead{
  margin-top:18px;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-soft);
  max-width:40em;
}
.meta-row{
  margin-top:22px;
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}
.meta-row b{color:var(--ink);font-weight:600}

/* ---------- 板块 ---------- */
.section{padding:64px 0}
@media (min-width:768px){
  .section{padding:96px 0}
}
.section-head{max-width:44em;margin-bottom:36px}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
  letter-spacing:-.01em;
  font-weight:700;
}
.section-head p{
  margin-top:12px;
  color:var(--ink-soft);
  font-size:15px;
}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- 时间轴布局 ---------- */
.split{display:grid;gap:32px}
@media (min-width:1024px){
  .split{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:48px;align-items:start}
}
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:14px;
  bottom:14px;
  width:1px;
  background:var(--line);
}
.tl-item{position:relative;padding-left:40px;padding-bottom:22px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;
  left:0;
  top:16px;
  width:15px;
  height:15px;
  border-radius:50%;
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:0 0 0 5px var(--paper);
}
.tl-item.is-start .tl-dot{background:var(--accent);border-color:var(--accent)}
.tl-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  padding:22px 24px;
  transition:transform 200ms var(--ease),box-shadow 200ms var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.tl-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.tl-index{
  font-size:1.5rem;
  font-weight:800;
  color:var(--accent);
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.tl-head h3{font-size:1.125rem;font-weight:600;line-height:1.35}
.tl-card > p{margin-top:10px;font-size:15px;color:var(--ink-soft)}
.tl-points{
  margin-top:14px;
  padding-top:14px;
  border-top:1px solid var(--line);
  display:grid;
  gap:8px;
}
.tl-points li{
  position:relative;
  padding-left:16px;
  font-size:14px;
  line-height:1.7;
  color:var(--ink-soft);
}
.tl-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--accent);
  opacity:.75;
}

/* ---------- 右侧摘要卡 ---------- */
.aside-sticky{position:sticky;top:96px}
.summary-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--surface);
  overflow:hidden;
}
.summary-card figure{margin:0;overflow:hidden}
.summary-card figure img{
  border-radius:0;
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  transition:transform 200ms var(--ease);
}
.summary-card:hover figure img{transform:scale(1.03)}
.summary-body{padding:22px 24px 24px}
.summary-body h3{
  font-size:1.125rem;
  font-weight:600;
  line-height:1.35;
  margin-bottom:6px;
}
.summary-body .sub{
  font-size:13px;
  color:var(--ink-soft);
  letter-spacing:.02em;
  margin-bottom:16px;
}
.sum-list{display:grid;gap:0}
.sum-list li{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:10px 0;
  border-bottom:1px dashed var(--line);
  font-size:14px;
  color:var(--ink-soft);
}
.sum-list li:last-child{border-bottom:0}
.sum-list li b{
  color:var(--ink);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.summary-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.summary-actions .btn{width:100%}
.status-note{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-soft);
}
.status-note::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--accent);
  flex:0 0 auto;
}

/* ---------- 场景清单 ---------- */
.scene-list{
  display:grid;
  border-top:1px solid var(--line);
}
@media (min-width:768px){
  .scene-list{grid-template-columns:1fr 1fr;column-gap:48px}
}
.scene-item{
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.scene-item h3{
  font-size:1.0625rem;
  font-weight:600;
  line-height:1.35;
  margin-bottom:8px;
  display:flex;
  align-items:baseline;
  gap:10px;
}
.scene-item h3 span{
  font-size:13px;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}
.scene-item p{font-size:14.5px;color:var(--ink-soft)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;gap:32px}
@media (min-width:1024px){
  .faq-wrap{grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:48px;align-items:start}
}
.faq-wrap h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
  letter-spacing:-.01em;
  font-weight:700;
}
.faq-wrap .faq-lead{margin-top:12px;color:var(--ink-soft);font-size:15px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 0 20px 0;
  font-size:1.0625rem;
  font-weight:600;
  line-height:1.5;
  transition:color 200ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{
  flex:0 0 auto;
  width:22px;
  height:22px;
  margin-top:3px;
  position:relative;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink-soft);
  transition:transform 200ms var(--ease),background 200ms var(--ease);
}
.faq-icon::before{left:0;top:10px;width:22px;height:1.5px}
.faq-icon::after{left:10px;top:0;width:1.5px;height:22px}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-item[open] .faq-icon::before{background:var(--accent)}
.faq-item[open] summary{color:var(--ink)}
.faq-answer{
  position:relative;
  padding:0 0 22px 16px;
  font-size:15px;
  line-height:1.8;
  color:var(--ink-soft);
}
.faq-answer::before{
  content:"";
  position:absolute;
  left:0;
  top:5px;
  bottom:24px;
  width:3px;
  background:var(--accent);
  border-radius:2px;
}

/* ---------- CTA ---------- */
.cta-block{
  background-color:var(--ink-block);
  background-image:repeating-linear-gradient(45deg, rgba(255,255,255,.035) 0 1px, transparent 1px 14px);
  color:var(--paper);
  border-radius:var(--radius-card);
  padding:40px 24px;
}
@media (min-width:768px){
  .cta-block{padding:56px 48px}
}
.cta-inner{display:grid;gap:28px}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
}
.cta-block h2{
  font-size:clamp(1.5rem,2.6vw,2.25rem);
  line-height:1.2;
  letter-spacing:-.01em;
  font-weight:700;
}
.cta-block p{
  margin-top:12px;
  color:rgba(246,244,239,.72);
  font-size:15px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.trust-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px 22px;
  margin-top:22px;
  font-size:13px;
  color:rgba(246,244,239,.66);
}
.trust-row span{display:inline-flex;align-items:center;gap:7px}
.trust-row span::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--accent);
}
.cta-form{
  border:1px solid rgba(246,244,239,.18);
  border-radius:var(--radius-card);
  padding:22px;
  background:rgba(246,244,239,.04);
}
.cta-form label{
  display:block;
  font-size:13px;
  letter-spacing:.04em;
  color:rgba(246,244,239,.72);
  margin-bottom:8px;
}
.cta-form input{
  width:100%;
  height:44px;
  padding:0 14px;
  border-radius:10px;
  border:1px solid rgba(246,244,239,.24);
  background:rgba(246,244,239,.06);
  color:var(--paper);
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.cta-form input::placeholder{color:rgba(246,244,239,.42)}
.cta-form input:focus{
  outline:none;
  border-color:var(--accent);
  background:rgba(246,244,239,.1);
}
.cta-form .btn{width:100%;margin-top:14px}
.cta-form .form-note{
  margin-top:12px;
  font-size:12.5px;
  line-height:1.7;
  color:rgba(246,244,239,.55);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background-color:var(--ink-block);
  background-image:repeating-linear-gradient(45deg, rgba(255,255,255,.03) 0 1px, transparent 1px 16px);
  color:rgba(246,244,239,.78);
  margin-top:0;
  padding:56px 0 26px;
}
.footer-grid{
  display:grid;
  gap:32px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.12em;
  font-weight:600;
  color:rgba(246,244,239,.5);
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  font-size:14.5px;
  padding:6px 0;
  color:rgba(246,244,239,.78);
  transition:color 200ms var(--ease);
}
.footer-col a:hover{color:var(--accent)}
.footer-brand strong{
  display:block;
  font-size:17px;
  color:var(--paper);
  font-weight:700;
  margin-bottom:12px;
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:rgba(246,244,239,.6);
  max-width:26em;
}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(246,244,239,.14);
  display:flex;
  flex-wrap:wrap;
  gap:8px 24px;
  justify-content:space-between;
  font-size:13px;
  color:rgba(246,244,239,.52);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-inner{flex-wrap:wrap;gap:12px;padding:12px 0}
  .chip-nav{order:3;width:100%;margin-left:0}
  .nav-cta{margin-left:auto}
  .aside-sticky{position:static}
}
@media (max-width:519px){
  h1{font-size:clamp(1.75rem,8vw,2.2rem)}
  .banner-inner{padding:40px 0 36px}
  .tl-card{padding:18px}
  .tl-item{padding-left:32px}
  .timeline::before{left:6px}
  .tl-dot{width:13px;height:13px;top:18px}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category3 */
:root{
  --ink:#111318;
  --ink-soft:#4A4F59;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D6;
  --accent:#FF5A1F;
  --accent-deep:#D63F0C;
  --ink-block:#0E0F13;
  --gold:#FFC93C;
  --radius-card:14px;
  --radius-img:12px;
  --radius-pill:999px;
  --radius-badge:6px;
  --shadow-hover:0 12px 28px rgba(17,19,24,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.page-body{
  margin:0;
  background-color:var(--paper);
  color:var(--ink);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.94);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:18px;min-height:68px;padding-top:10px;padding-bottom:10px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--ink);color:var(--paper);
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.02em;
  transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.brand:hover .brand-mark{background:var(--accent);transform:translateY(-1px)}
.brand-text strong{display:block;font-size:15px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
.brand-text em{display:block;font-size:12px;font-style:normal;color:var(--ink-soft);letter-spacing:.02em}
.chip-nav{
  display:flex;align-items:center;gap:2px;margin-left:auto;
  padding:4px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-pill);
  overflow-x:auto;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none;
}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;min-height:38px;padding:0 15px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--ink-soft);white-space:nowrap;scroll-snap-align:start;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.chip:hover{background:#EFEBE2;color:var(--ink)}
.chip.active{background:var(--ink);color:var(--paper)}
.nav-cta{flex:0 0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);box-shadow:var(--shadow-hover)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink);background:var(--surface)}
.btn-outline-light{background:transparent;border-color:rgba(246,244,239,.34);color:var(--paper)}
.btn-outline-light:hover{border-color:var(--paper);background:rgba(246,244,239,.08)}
.btn-block{width:100%}

/* ---------- 深色首屏 ---------- */
.hero-band{
  position:relative;overflow:hidden;
  background-color:var(--ink-block);
  background-image:linear-gradient(180deg,rgba(14,15,19,.86),rgba(14,15,19,.95)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:var(--paper);
  border-bottom:1px solid var(--line);
}
.hero-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(246,244,239,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(246,244,239,.035) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
@media (min-width:768px){.hero-inner{padding-top:88px;padding-bottom:88px}}
.hero-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:20px;
  padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid rgba(246,244,239,.28);background:rgba(246,244,239,.06);
  font-size:13px;letter-spacing:.06em;color:rgba(246,244,239,.86);
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.hero-band h1{
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  line-height:1.08;font-weight:800;letter-spacing:-.02em;color:#fff;
}
.hero-lead{margin-top:18px;font-size:clamp(1rem,1.4vw,1.125rem);color:rgba(246,244,239,.76);max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-actions .btn{flex:1 1 auto}
@media (min-width:640px){.hero-actions .btn{flex:0 0 auto}}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;font-size:13px;color:rgba(246,244,239,.62);letter-spacing:.02em}
.hero-trust li{display:inline-flex;align-items:center;gap:8px}
.hero-trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold)}
.hero-side{display:flex;justify-content:flex-start}
@media (min-width:1024px){.hero-side{justify-content:flex-end}}
.hero-card{
  width:100%;max-width:340px;padding:24px;border-radius:var(--radius-card);
  background:rgba(246,244,239,.06);border:1px solid rgba(246,244,239,.16);
}
.hero-card-label{font-size:13px;letter-spacing:.06em;color:rgba(246,244,239,.6)}
.hero-card-value{display:block;margin-top:6px;font-size:2.25rem;font-weight:800;letter-spacing:-.02em;color:#fff}
.hero-card p{margin-top:12px;font-size:14px;line-height:1.7;color:rgba(246,244,239,.7)}
.hero-card-time{display:inline-flex;align-items:center;gap:8px;margin-top:18px;font-size:13px;color:rgba(246,244,239,.66)}

/* ---------- 通用板块 ---------- */
.section{padding-top:64px;padding-bottom:64px}
@media (min-width:768px){.section{padding-top:96px;padding-bottom:96px}}
.section-surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-kicker{font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600}
.section-head h2{
  margin-top:12px;font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:700;letter-spacing:-.01em;
}
.section-head p{margin-top:14px;color:var(--ink-soft);font-size:16px}

/* ---------- 不规则网格 ---------- */
.grid-irregular{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){
  .grid-irregular{grid-template-columns:repeat(12,1fr);gap:22px}
  .gi-large{grid-column:span 8;grid-row:span 2}
  .gi-mid{grid-column:span 6}
  .gi-small{grid-column:span 6}
}
@media (min-width:1024px){
  .grid-irregular .gi-mid{grid-column:span 4}
  .grid-irregular .gi-small{grid-column:span 4}
}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.section-surface .card{background:var(--surface)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);background:var(--surface);border-color:#D9D3C5}
.card h3{font-size:1.1875rem;line-height:1.35;font-weight:600;letter-spacing:-.005em}
.card p{margin-top:10px;color:var(--ink-soft);font-size:15px}
.card-large{padding:0;overflow:hidden}
.card-large .card-media{position:relative;overflow:hidden;aspect-ratio:16/9;border-bottom:1px solid var(--line)}
.card-large .card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease)}
.card-large:hover .card-media img{transform:scale(1.03)}
.card-large .card-body{padding:24px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--radius-badge);
  background:rgba(255,90,31,.1);color:var(--accent-deep);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-ink{background:var(--ink);color:var(--paper)}
.badge-gold{background:rgba(255,201,60,.24);color:#8A6100}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.spec-list{margin-top:16px;display:grid;gap:8px}
.spec-list li{display:flex;justify-content:space-between;gap:16px;padding-top:8px;border-top:1px dashed var(--line);font-size:14px;color:var(--ink-soft)}
.spec-list li:first-child{padding-top:0;border-top:0}
.spec-list strong{color:var(--ink);font-weight:600}
.card-small{padding:20px}
.card-small h3{font-size:1.0625rem}
.card-small p{font-size:14px}

/* ---------- 数据对比条 ---------- */
.meter-list{display:grid;gap:24px;max-width:880px}
.meter-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:10px}
.meter-name{font-size:15px;font-weight:600}
.meter-note{font-size:13px;color:var(--ink-soft)}
.meter-value{font-size:1.25rem;font-weight:800;letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.meter-track{height:8px;border-radius:var(--radius-pill);background:#EDE9E0;overflow:hidden;border:1px solid var(--line)}
.meter-fill{display:block;height:100%;border-radius:var(--radius-pill);background:var(--accent)}
.meter-foot{margin-top:8px;font-size:13px;color:var(--ink-soft)}

/* ---------- 核对清单 ---------- */
.checklist{display:grid;grid-template-columns:1fr;gap:0}
@media (min-width:768px){.checklist{grid-template-columns:repeat(2,1fr);gap:0 48px}}
.check-item{display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.check-item:first-child,.check-item:nth-child(2){border-top:0}
@media (max-width:767px){.check-item:nth-child(2){border-top:1px solid var(--line)}}
.check-num{
  flex:0 0 auto;font-size:1.5rem;font-weight:800;letter-spacing:-.02em;
  color:transparent;-webkit-text-stroke:1px var(--accent);line-height:1.2;min-width:38px;
}
.check-item h3{font-size:1.0625rem;font-weight:600;line-height:1.4}
.check-item p{margin-top:6px;color:var(--ink-soft);font-size:14.5px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:1024px){.faq-layout{grid-template-columns:5fr 7fr;gap:56px}}
.faq-intro h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:700;letter-spacing:-.01em}
.faq-intro p{margin-top:14px;color:var(--ink-soft)}
.faq-list{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:20px;
  min-height:64px;padding:18px 0 18px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:1.0625rem;font-weight:600;line-height:1.5;
  transition:color var(--dur) var(--ease),padding var(--dur) var(--ease);
}
.faq-q:hover{color:var(--accent-deep)}
.faq-item.open .faq-q{padding-left:14px}
.faq-item.open .faq-q::before{content:"";position:absolute;left:0;}
.faq-item{position:relative}
.faq-item.open{box-shadow:inset 3px 0 0 var(--accent)}
.faq-item.open .faq-q{padding-left:16px}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:0;top:50%;width:18px;height:1.5px;background:var(--ink-soft);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.open .faq-icon::after{transform:rotate(0)}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--accent-deep)}
.faq-a{padding:0 0 22px;color:var(--ink-soft);line-height:1.85;font-size:15.5px}
.faq-item.open .faq-a{padding-left:16px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background-color:var(--ink-block);color:var(--paper);
  background-image:linear-gradient(180deg,rgba(14,15,19,.9),rgba(14,15,19,.96)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(45deg,rgba(246,244,239,.04) 0 1px,transparent 1px 24px);
}
.cta-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
@media (min-width:768px){.cta-inner{padding-top:88px;padding-bottom:88px}}
.cta-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:start}
@media (min-width:1024px){.cta-grid{grid-template-columns:7fr 5fr;gap:64px}}
.cta-grid h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;font-weight:700;letter-spacing:-.01em;color:#fff}
.cta-grid .cta-desc{margin-top:16px;color:rgba(246,244,239,.72);max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.cta-actions .btn{flex:1 1 auto}
@media (min-width:640px){.cta-actions .btn{flex:0 0 auto}}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:26px;font-size:13px;color:rgba(246,244,239,.6)}
.cta-points li{display:inline-flex;align-items:center;gap:8px}
.cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.cta-form{background:rgba(246,244,239,.06);border:1px solid rgba(246,244,239,.16);border-radius:var(--radius-card);padding:24px}
.cta-form label{display:block;font-size:13px;letter-spacing:.06em;color:rgba(246,244,239,.7);margin-bottom:10px}
.cta-form-row{display:flex;flex-wrap:wrap;gap:10px}
.cta-form-row input{
  flex:1 1 200px;min-height:44px;padding:0 16px;border-radius:10px;
  background:rgba(246,244,239,.08);border:1px solid rgba(246,244,239,.22);color:var(--paper);
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.cta-form-row input::placeholder{color:rgba(246,244,239,.42)}
.cta-form-row input:focus{border-color:var(--accent);background:rgba(246,244,239,.12);outline:none}
.cta-form-row .btn{flex:0 0 auto}
.form-hint{margin-top:12px;font-size:13px;color:rgba(246,244,239,.5)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-block);color:rgba(246,244,239,.72);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(246,244,239,.5);font-weight:600;margin-bottom:16px}
.footer-col a{display:block;padding:6px 0;font-size:14.5px;color:rgba(246,244,239,.72);transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-brand strong{display:block;font-size:16px;font-weight:800;color:var(--paper);margin-bottom:12px}
.footer-brand p{font-size:14px;line-height:1.75;color:rgba(246,244,239,.6);max-width:34ch}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  margin-top:48px;padding:22px 0 28px;border-top:1px solid rgba(246,244,239,.12);
  font-size:13px;color:rgba(246,244,239,.5);
}

/* ---------- 响应式导航 ---------- */
@media (max-width:900px){
  .nav-inner{flex-wrap:wrap;row-gap:10px;padding-top:12px;padding-bottom:12px}
  .brand-text em{display:none}
  .nav-cta{order:2;margin-left:auto;min-height:40px;padding:0 18px;font-size:14px}
  .chip-nav{order:3;width:100%;margin-left:0;justify-content:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category4 */
*,*::before,*::after{box-sizing:border-box}
  :root{
    --ink:#111318;
    --ink-soft:#4A4F59;
    --paper:#F6F4EF;
    --surface:#FFFFFF;
    --line:#E4E0D6;
    --accent:#FF5A1F;
    --accent-deep:#D63F0C;
    --ink-block:#0E0F13;
    --gold:#FFC93C;
    --radius-card:14px;
    --radius-img:12px;
    --radius-pill:999px;
    --shadow-hover:0 12px 28px rgba(17,19,24,.08);
    --ease:cubic-bezier(.2,.7,.3,1);
    --dur:200ms;
    --section-y:64px;
  }
  @media (min-width:768px){ :root{ --section-y:96px; } }

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none}
  a{color:inherit;text-decoration:none}
  ul,ol{margin:0;padding:0;list-style:none}
  p{margin:0}
  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .num{font-variant-numeric:tabular-nums;font-family:Inter,system-ui,sans-serif}

  /* ---------- 通用容器与板块 ---------- */
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 32px} }
  .section{padding:var(--section-y) 0}
  .section-head{margin-bottom:40px;max-width:700px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;font-weight:600;letter-spacing:.14em;
    color:var(--accent);margin-bottom:14px;
  }
  .eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);display:block}
  .section-title{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;letter-spacing:-.01em;font-weight:700;color:var(--ink)}
  .section-lead{margin-top:12px;font-size:16px;line-height:1.8;color:var(--ink-soft)}
  .divider{height:1px;background:var(--line);border:0;margin:0}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,244,239,.96);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex;align-items:center;gap:16px;min-height:68px;padding-top:8px;padding-bottom:8px}
  .brand{display:flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:38px;height:38px;border-radius:10px;background:var(--ink);color:var(--paper);
    display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.04em;
    font-family:Inter,system-ui,sans-serif;flex:none;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25}
  .brand-text strong{font-size:15px;font-weight:700;color:var(--ink)}
  .brand-text em{font-style:normal;font-size:12px;color:var(--ink-soft);letter-spacing:.02em}
  .chip-nav{
    display:flex;align-items:center;gap:4px;
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--radius-pill);padding:4px;margin-left:auto;
    max-width:100%;
  }
  .chip{
    display:inline-flex;align-items:center;justify-content:center;
    min-height:44px;padding:0 16px;border-radius:var(--radius-pill);
    font-size:14px;font-weight:500;color:var(--ink-soft);white-space:nowrap;
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .chip:hover{background:#EDEAE2;color:var(--ink)}
  .chip.active{background:var(--ink);color:var(--paper);font-weight:600}
  .chip.active:hover{background:var(--ink);color:var(--paper)}
  .nav-cta{flex:none}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 24px;border-radius:var(--radius-pill);
    font-size:15px;font-weight:600;letter-spacing:.01em;border:1px solid transparent;
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
               border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
  }
  .btn svg{flex:none;transition:transform var(--dur) var(--ease)}
  .btn:hover svg{transform:translateX(2px)}
  .btn-primary{background:var(--accent);color:#fff}
  .btn-primary:hover{background:var(--accent-deep);transform:translateY(-1px)}
  .btn-ghost{background:transparent;color:var(--paper);border-color:rgba(246,244,239,.38)}
  .btn-ghost:hover{border-color:var(--paper);background:rgba(246,244,239,.08)}
  .btn-outline{background:var(--surface);color:var(--ink);border-color:var(--line)}
  .btn-outline:hover{border-color:var(--ink);transform:translateY(-1px)}
  .btn-block{width:100%}

  /* ---------- 徽章 ---------- */
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:6px;font-size:12px;font-weight:600;letter-spacing:.04em;
    background:rgba(255,201,60,.14);color:#B27C00;border:1px solid rgba(255,201,60,.42);
  }
  .badge-dark{
    background:rgba(255,201,60,.16);color:var(--gold);
    border-color:rgba(255,201,60,.36);
  }
  .badge-soft{
    background:#F1EEE6;color:var(--ink-soft);border-color:var(--line);
  }

  /* ---------- 首屏 ---------- */
  .hero{
    position:relative;overflow:hidden;color:var(--paper);
    background:var(--ink-block) url("/assets/images/backpic/back-1.png") center/cover no-repeat;
    padding:72px 0 68px;
  }
  .hero::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(14,15,19,.88) 0%,rgba(14,15,19,.94) 100%);
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
    background-image:
      repeating-linear-gradient(0deg,rgba(255,255,255,.045) 0 1px,transparent 1px 24px),
      repeating-linear-gradient(90deg,rgba(255,255,255,.045) 0 1px,transparent 1px 24px);
  }
  .hero-inner{position:relative;z-index:2;max-width:820px}
  .hero-title{
    font-size:clamp(2.1rem,4.6vw,3.4rem);line-height:1.1;font-weight:800;
    letter-spacing:-.02em;margin:18px 0 0;color:var(--paper);
  }
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.75;color:rgba(246,244,239,.76);max-width:640px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
  .hero-points{display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:36px;padding-top:28px;border-top:1px solid rgba(246,244,239,.14)}
  .hero-points li{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(246,244,239,.72)}
  .hero-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}

  /* ---------- 对照清单 ---------- */
  .compare{border-top:1px solid var(--line);margin-top:8px}
  .compare-row{
    display:grid;gap:8px;padding:22px 18px;
    border-bottom:1px solid var(--line);border-radius:10px;
    transition:background var(--dur) var(--ease);
  }
  @media (min-width:768px){
    .compare-row{grid-template-columns:5fr 7fr;gap:36px;align-items:start;padding:24px 20px}
  }
  .compare-row:hover{background:var(--surface)}
  .compare-q{display:flex;gap:12px;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}
  .compare-q .idx{
    font-size:13px;font-weight:700;color:var(--accent);
    font-variant-numeric:tabular-nums;padding-top:3px;flex:none;
  }
  .compare-a{font-size:15px;line-height:1.8;color:var(--ink-soft)}

  /* ---------- 折叠面板 ---------- */
  .acc{
    border:1px solid var(--line);border-radius:var(--radius-card);
    background:var(--surface);overflow:hidden;
  }
  .acc-item{position:relative;border-bottom:1px solid var(--line)}
  .acc-item:last-child{border-bottom:0}
  .acc-item::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
    background:var(--accent);opacity:0;transition:opacity var(--dur) var(--ease);
  }
  .acc-item.open::before{opacity:1}
  .acc-btn{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
    min-height:44px;padding:20px 22px;text-align:left;
    font-size:16px;font-weight:600;color:var(--ink);background:transparent;border:0;
    font-family:inherit;cursor:pointer;
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .acc-btn:hover{background:#FAF9F5}
  .acc-item.open .acc-btn{color:var(--ink)}
  .acc-icon{position:relative;width:20px;height:20px;flex:none}
  .acc-icon::before,.acc-icon::after{
    content:"";position:absolute;background:var(--ink-soft);
    transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .acc-icon::before{left:0;right:0;top:50%;height:1.5px;margin-top:-.75px}
  .acc-icon::after{top:0;bottom:0;left:50%;width:1.5px;margin-left:-.75px}
  .acc-item.open .acc-icon::after{transform:scaleY(0)}
  .acc-item.open .acc-icon::before{background:var(--accent)}
  .acc-panel{
    display:none;padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-soft);
  }
  .acc-item.open .acc-panel{display:block;animation:fadeUp .4s var(--ease)}
  .acc-panel strong{color:var(--ink);font-weight:600}

  @keyframes fadeUp{
    from{opacity:0;transform:translateY(8px)}
    to{opacity:1;transform:translateY(0)}
  }

  /* ---------- 图文与风险清单 ---------- */
  .split{display:grid;gap:32px}
  @media (min-width:900px){ .split{grid-template-columns:5fr 7fr;gap:48px;align-items:start} }
  .figure{
    border:1px solid var(--line);border-radius:var(--radius-card);
    overflow:hidden;background:var(--surface);
  }
  .figure-img{overflow:hidden}
  .figure-img img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform var(--dur) var(--ease)}
  .figure-img:hover img{transform:scale(1.03)}
  .figure figcaption{padding:14px 18px;font-size:13px;color:var(--ink-soft);border-top:1px solid var(--line)}

  .risk-list li{
    display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
    font-size:15px;line-height:1.75;color:var(--ink);
  }
  .risk-list li:last-child{border-bottom:0}
  .risk-mark{
    width:22px;height:22px;border-radius:6px;flex:none;margin-top:3px;
    background:rgba(255,90,31,.1);color:var(--accent);
    display:grid;place-items:center;font-size:12px;font-weight:700;
  }
  .risk-list b{font-weight:600;color:var(--ink)}
  .risk-list span{color:var(--ink-soft)}

  /* ---------- 数据块 ---------- */
  .stats{display:grid;gap:20px}
  @media (min-width:768px){ .stats{grid-template-columns:repeat(3,1fr)} }
  .stat{
    border:1px solid var(--line);border-radius:var(--radius-card);
    background:var(--surface);padding:26px 24px;
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  }
  .stat:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .stat-num{
    font-size:clamp(2rem,3.4vw,2.6rem);font-weight:800;line-height:1;
    letter-spacing:-.02em;color:var(--ink);font-variant-numeric:tabular-nums;
    font-family:Inter,system-ui,sans-serif;
  }
  .stat-num em{font-style:normal;font-size:14px;font-weight:600;color:var(--ink-soft);margin-left:8px;letter-spacing:0}
  .stat p{margin-top:12px;font-size:14px;line-height:1.7;color:var(--ink-soft)}

  /* ---------- 深色 CTA ---------- */
  .cta{
    position:relative;overflow:hidden;color:var(--paper);
    background:var(--ink-block) url("/assets/images/backpic/back-3.png") center/cover no-repeat;
    padding:72px 0;
  }
  .cta::before{content:"";position:absolute;inset:0;background:rgba(14,15,19,.9)}
  .cta::after{
    content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
    background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 24px);
  }
  .cta-inner{position:relative;z-index:2;display:grid;gap:40px}
  @media (min-width:1024px){ .cta-inner{grid-template-columns:7fr 5fr;gap:64px;align-items:center} }
  .cta h2{font-size:clamp(1.5rem,2.6vw,2.25rem);line-height:1.2;color:var(--paper)}
  .cta-lead{margin-top:14px;font-size:16px;line-height:1.8;color:rgba(246,244,239,.72)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .cta-points{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:26px;font-size:13px;color:rgba(246,244,239,.6)}
  .cta-points li{display:flex;align-items:center;gap:8px}
  .cta-points li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);flex:none}

  .panel-form{
    border:1px solid rgba(246,244,239,.16);border-radius:var(--radius-card);
    background:rgba(255,255,255,.04);padding:26px 24px;
  }
  .panel-form h3{font-size:16px;color:var(--paper);margin-bottom:6px}
  .panel-form p{font-size:13px;color:rgba(246,244,239,.6);margin-bottom:20px}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;letter-spacing:.02em;color:rgba(246,244,239,.66);margin-bottom:8px}
  .field input{
    width:100%;height:44px;padding:0 14px;border-radius:10px;font-size:15px;
    border:1px solid rgba(246,244,239,.22);background:rgba(255,255,255,.05);
    color:var(--paper);font-family:inherit;
    transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .field input::placeholder{color:rgba(246,244,239,.35)}
  .field input:focus{background:rgba(255,255,255,.08);border-color:var(--accent)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink-block);color:rgba(246,244,239,.72);padding:64px 0 0;font-size:14px}
  .footer-grid{display:grid;gap:36px}
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px} }
  .footer-col h4{
    font-size:13px;font-weight:600;letter-spacing:.1em;
    color:rgba(246,244,239,.5);margin-bottom:16px;
  }
  .footer-col a{
    display:block;padding:7px 0;color:rgba(246,244,239,.72);
    transition:color var(--dur) var(--ease);
  }
  .footer-col a:hover{color:var(--accent)}
  .footer-brand strong{display:block;font-size:18px;font-weight:700;color:var(--paper);margin-bottom:12px}
  .footer-brand p{font-size:14px;line-height:1.8;color:rgba(246,244,239,.6)}
  .footer-bottom{
    margin-top:48px;border-top:1px solid rgba(246,244,239,.12);
    padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:10px;
    justify-content:space-between;font-size:13px;color:rgba(246,244,239,.5);
  }

  /* ---------- 响应式导航 ---------- */
  @media (max-width:1080px){
    .nav-inner{flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
    .brand{order:1}
    .nav-cta{order:2;margin-left:auto;min-height:44px;padding:0 18px;font-size:14px}
    .chip-nav{
      order:3;width:100%;margin-left:0;overflow-x:auto;
      scrollbar-width:none;-ms-overflow-style:none;
      scroll-snap-type:x proximity;
    }
    .chip-nav::-webkit-scrollbar{display:none}
    .chip{scroll-snap-align:start}
  }
  @media (max-width:520px){
    .hero{padding:56px 0 52px}
    .hero-actions .btn{width:100%}
    .brand-text strong{font-size:14px}
    .brand-text em{display:none}
    .cta{padding:56px 0}
    .cta-actions .btn{width:100%}
  }

  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
  }