/* roulang page: index */
:root {
    --c-lime: #C8F135;
    --c-violet: #6A4CFF;
    --c-orange: #FF5C39;
    --c-paper: #F6F3EC;
    --c-graphite: #0F1013;
    --c-ink: #15161A;
    --c-muted: #6B6F76;
    --c-line: #E5E0D6;
    --r-lg: 20px;
    --r-sm: 14px;
    --r-pill: 999px;
    --shadow-soft: 0 18px 50px rgba(15, 16, 19, .08);
    --shadow-dark: 0 24px 80px rgba(0, 0, 0, .35);
    --nav-h: 66px;
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
  body {
    margin: 0;
    background: var(--c-paper);
    color: var(--c-ink);
    font-family: MiSans, "HarmonyOS Sans SC", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    font-size: 17px;
    line-height: 1.8;
    letter-spacing: .01em;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button, input, textarea, select { font: inherit; color: inherit; }
  h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -.01em; margin: 0; font-weight: 800; }
  p { margin: 0; }
  ::selection { background: var(--c-lime); color: var(--c-graphite); }
  :focus-visible { outline: 2px solid var(--c-violet); outline-offset: 3px; border-radius: 6px; }

  .shell { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
  .section { padding: 96px 0; }
  .section-tight { padding: 72px 0; }
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 13px; font-weight: 700; letter-spacing: .16em;
    text-transform: uppercase; color: var(--c-muted);
  }
  .eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--c-lime); display: block; }
  .h1-xl {
    font-size: clamp(2.25rem, 5.2vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -.03em;
    line-height: 1.08;
  }
  .h2-xl { font-size: clamp(1.75rem, 3.1vw, 2.75rem); font-weight: 800; }
  .h3-lg { font-size: clamp(1.25rem, 1.8vw, 1.6rem); font-weight: 800; }
  .lead { color: var(--c-muted); font-size: 17px; line-height: 1.9; }
  .num-font { font-family: "Barlow Condensed", "HarmonyOS Sans SC", MiSans, sans-serif; letter-spacing: -.02em; }

  /* ---------- 导航 ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 60;
    background: rgba(246, 243, 236, .92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--c-line);
  }
  .nav-bar {
    height: var(--nav-h);
    display: grid;
    grid-template-columns: 52% 48%;
    align-items: center;
  }
  .nav-left { display: flex; align-items: center; gap: 28px; min-width: 0; }
  .nav-right { display: flex; align-items: center; justify-content: flex-end; gap: 16px; }
  .nav-divider { width: 1px; height: 26px; background: var(--c-line); }
  .brand {
    display: inline-flex; align-items: center; gap: 10px;
    font-weight: 800; font-size: 17px; letter-spacing: -.01em; white-space: nowrap;
  }
  .brand-mark {
    width: 30px; height: 30px; border-radius: 9px;
    background: var(--c-graphite);
    display: grid; place-items: center; flex: 0 0 auto;
  }
  .brand-mark span { width: 12px; height: 12px; border: 2px solid var(--c-lime); transform: rotate(45deg); display: block; }
  .nav-links { display: flex; align-items: center; gap: 4px; }
  .nav-links a {
    position: relative;
    padding: 8px 12px; border-radius: var(--r-pill);
    font-size: 15px; font-weight: 600; color: #3B3D43;
    transition: background .22s ease, color .22s ease;
    white-space: nowrap;
  }
  .nav-links a:hover { background: #EDE8DD; color: var(--c-ink); }
  .nav-links a.active { background: var(--c-graphite); color: #FFFFFF; }
  .nav-links a.active::after {
    content: ""; position: absolute; left: 50%; bottom: -14px; transform: translateX(-50%);
    width: 18px; height: 3px; border-radius: 3px; background: var(--c-lime);
  }
  .nav-search {
    height: 40px; width: 200px;
    display: flex; align-items: center; gap: 8px;
    padding: 0 14px; border-radius: var(--r-pill);
    border: 1px solid var(--c-line); background: #FFFFFF;
    transition: border-color .2s ease, box-shadow .2s ease;
  }
  .nav-search:focus-within { border-color: var(--c-lime); box-shadow: 0 0 0 4px rgba(200, 241, 53, .35); }
  .nav-search input { border: 0; outline: 0; background: transparent; width: 100%; font-size: 14px; }
  .nav-search svg { flex: 0 0 auto; color: var(--c-muted); }

  /* ---------- 按钮 ---------- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 48px; padding: 0 26px; border-radius: var(--r-pill);
    font-size: 15px; font-weight: 700; border: 1px solid transparent;
    cursor: pointer; transition: transform .2s ease, background .22s ease, color .22s ease, border-color .22s ease, box-shadow .22s ease;
  }
  .btn-sm { height: 40px; padding: 0 18px; font-size: 14px; }
  .btn-primary { background: var(--c-lime); color: var(--c-graphite); }
  .btn-primary:hover { background: var(--c-graphite); color: var(--c-lime); transform: translateY(-2px); }
  .btn-ghost { background: transparent; border-color: #C9C3B6; color: var(--c-ink); }
  .btn-ghost:hover { border-color: var(--c-graphite); background: var(--c-graphite); color: #FFFFFF; transform: translateY(-2px); }
  .btn-dark { background: var(--c-graphite); color: #FFFFFF; }
  .btn-dark:hover { background: var(--c-lime); color: var(--c-graphite); transform: translateY(-2px); }
  .link-arrow {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 14px; font-weight: 700; color: var(--c-ink);
    border-bottom: 2px solid var(--c-lime); padding-bottom: 2px;
    transition: gap .2s ease, color .2s ease;
  }
  .link-arrow:hover { gap: 12px; color: var(--c-violet); }

  /* ---------- 徽章 / 标签 ---------- */
  .badge {
    display: inline-flex; align-items: center; height: 26px; padding: 0 12px;
    border-radius: var(--r-pill); font-size: 12px; font-weight: 700; letter-spacing: .04em;
  }
  .badge-lime { background: var(--c-lime); color: var(--c-graphite); }
  .badge-violet { background: rgba(106, 76, 255, .13); color: var(--c-violet); }
  .badge-orange { background: rgba(255, 92, 57, .14); color: #C93C1C; }
  .badge-line { background: transparent; border: 1px solid var(--c-line); color: var(--c-muted); }

  /* ---------- 卡片 ---------- */
  .card {
    background: #FFFFFF; border: 1px solid var(--c-line); border-radius: var(--r-lg);
    padding: 28px; transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  }
  .card:hover { transform: translateY(-4px); border-color: var(--c-lime); box-shadow: var(--shadow-soft); }
  .card-flat { background: transparent; border: 1px solid var(--c-line); }
  .card-dark { background: var(--c-graphite); border-color: #24262C; color: #F2EFE8; }
  .card-dark:hover { border-color: var(--c-lime); }
  .icon-box {
    width: 44px; height: 44px; border-radius: 12px;
    display: grid; place-items: center;
    background: #F1F6DC; color: #55671A; font-weight: 800; font-size: 15px;
  }
  .icon-box.violet { background: rgba(106, 76, 255, .12); color: #4A31C4; }
  .icon-box.orange { background: rgba(255, 92, 57, .12); color: #C93C1C; }

  /* ---------- Hero ---------- */
  .hero { background: var(--c-paper); }
  .hero-grid { display: grid; grid-template-columns: 52% 48%; min-height: 620px; }
  .hero-copy {
    padding: calc(var(--nav-h) + 40px) 56px 72px 0;
    display: flex; flex-direction: column; justify-content: center;
  }
  .hero-visual {
    position: relative;
    border-radius: var(--r-lg);
    overflow: hidden;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow-soft);
  }
  .hero-visual::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(160deg, rgba(15, 16, 19, .82) 0%, rgba(15, 16, 19, .52) 58%, rgba(15, 16, 19, .78) 100%);
  }
  .hero-frame {
    position: absolute; z-index: 2; inset: auto 32px 32px auto;
    width: 190px; height: 190px;
    border: 2px solid var(--c-lime); border-radius: 18px; opacity: .55;
  }
  .hero-frame.small { inset: 32px auto auto 32px; width: 92px; height: 92px; border-radius: 50%; }
  .hero-visual-inner {
    position: relative; z-index: 3; height: 100%;
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 40px; color: #FFFFFF;
  }
  .hero-chip {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .22);
    color: #FFFFFF; border-radius: var(--r-pill);
    height: 32px; padding: 0 14px; font-size: 13px; font-weight: 600;
    backdrop-filter: blur(6px);
  }
  .metric-strip {
    border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line);
    background: #FFFFFF;
  }
  .metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
  .metric-cell { padding: 28px 24px; border-right: 1px solid var(--c-line); }
  .metric-cell:last-child { border-right: 0; }
  .metric-value { font-size: clamp(1.9rem, 3vw, 2.6rem); font-weight: 800; color: var(--c-ink); }
  .metric-label { font-size: 14px; color: var(--c-muted); margin-top: 4px; }

  /* ---------- Bento ---------- */
  .bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
  .b-tall { grid-column: span 7; }
  .b-side { grid-column: span 5; }
  .b-third { grid-column: span 4; }

  /* ---------- 交替图文 ---------- */
  .split-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
  .split-row.reverse .split-media { order: 2; }
  .split-media {
    border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--c-line);
    box-shadow: var(--shadow-soft);
  }
  .split-media img { width: 100%; height: 340px; object-fit: cover; transition: transform .5s ease; }
  .split-media:hover img { transform: scale(1.03); }
  .check-list { list-style: none; padding: 0; margin: 0; }
  .check-list li {
    position: relative; padding-left: 26px; margin-bottom: 10px;
    color: #3B3D43; font-size: 15.5px;
  }
  .check-list li::before {
    content: ""; position: absolute; left: 0; top: 11px;
    width: 12px; height: 12px; border-radius: 3px;
    background: var(--c-lime); transform: rotate(45deg);
  }

  /* ---------- 案例 ---------- */
  .case-main { position: relative; border-radius: var(--r-lg); overflow: hidden; min-height: 380px; }
  .case-main img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
  .case-main::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(15, 16, 19, .18) 0%, rgba(15, 16, 19, .88) 100%);
  }
  .case-main-body { position: relative; z-index: 2; padding: 36px; color: #FFFFFF; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; }
  .quote-card {
    background: #FFFFFF; border: 1px solid var(--c-line); border-radius: var(--r-sm);
    padding: 24px; height: 100%;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  }
  .quote-card:hover { transform: translateY(-4px); border-color: var(--c-violet); box-shadow: var(--shadow-soft); }
  .quote-card blockquote { margin: 0; font-size: 15.5px; line-height: 1.85; color: #33353B; }
  .quote-card .who { margin-top: 16px; font-size: 13px; color: var(--c-muted); }

  /* ---------- 价格 ---------- */
  .price-card {
    background: #FFFFFF; border: 1px solid var(--c-line); border-radius: var(--r-lg);
    padding: 32px; display: flex; flex-direction: column;
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); }
  .price-card.featured {
    border: 2px solid var(--c-lime);
    box-shadow: 0 24px 60px rgba(200, 241, 53, .28);
    transform: scale(1.025);
  }
  .price-card.featured:hover { transform: scale(1.025) translateY(-4px); }
  .price-amount { font-size: clamp(2rem, 3.4vw, 2.9rem); font-weight: 800; letter-spacing: -.03em; }
  .feature-list { list-style: none; padding: 0; margin: 24px 0 0; }
  .feature-list li {
    padding: 11px 0 11px 24px; position: relative;
    border-top: 1px solid #F0ECE2; font-size: 15px; color: #3B3D43;
  }
  .feature-list li::before {
    content: ""; position: absolute; left: 0; top: 19px;
    width: 10px; height: 10px; border-radius: 2px; background: var(--c-violet);
    transform: rotate(45deg);
  }

  /* ---------- 列表 ---------- */
  .post-lead { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--c-line); background: #FFFFFF; display: flex; flex-direction: column; }
  .post-lead img { width: 100%; height: 268px; object-fit: cover; transition: transform .5s ease; }
  .post-lead:hover img { transform: scale(1.03); }
  .post-row {
    display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: start;
    padding: 20px 0; border-top: 1px solid var(--c-line);
    transition: padding-left .22s ease;
  }
  .post-row:hover { padding-left: 8px; }
  .post-row h3 { font-size: 18px; font-weight: 700; }
  .post-row p { font-size: 14.5px; color: var(--c-muted); line-height: 1.75; margin-top: 6px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  .empty-state {
    border: 1px dashed #C9C3B6; border-radius: var(--r-lg);
    background: repeating-linear-gradient(135deg, #FFFFFF, #FFFFFF 12px, #FAF8F3 12px, #FAF8F3 24px);
    padding: 56px 28px; text-align: center;
  }
  .empty-mark {
    width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 16px;
    background: var(--c-graphite); display: grid; place-items: center;
  }
  .empty-mark span { width: 22px; height: 22px; border: 2px solid var(--c-lime); transform: rotate(45deg); display: block; }

  /* ---------- FAQ ---------- */
  .faq-item { border-top: 1px solid var(--c-line); }
  .faq-item:last-child { border-bottom: 1px solid var(--c-line); }
  .faq-item summary {
    list-style: none; cursor: pointer;
    display: flex; align-items: center; justify-content: space-between; gap: 20px;
    padding: 22px 0; font-size: 18px; font-weight: 700;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-plus {
    flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%;
    border: 1px solid var(--c-line); display: grid; place-items: center;
    transition: transform .28s ease, background .28s ease, border-color .28s ease;
  }
  .faq-plus::before { content: "+"; font-size: 18px; line-height: 1; color: var(--c-ink); }
  .faq-item[open] .faq-plus { transform: rotate(135deg); background: var(--c-lime); border-color: var(--c-lime); }
  .faq-answer { padding: 0 0 24px; color: var(--c-muted); font-size: 16px; max-width: 62ch; }

  /* ---------- 表单 ---------- */
  .field-label { display: block; font-size: 14px; font-weight: 700; margin-bottom: 8px; }
  .field-input, .field-textarea {
    width: 100%; border: 1px solid var(--c-line); border-radius: 12px;
    background: #FFFFFF; padding: 0 16px; height: 48px;
    transition: border-color .2s ease, box-shadow .2s ease;
  }
  .field-textarea { height: auto; padding: 14px 16px; resize: vertical; min-height: 110px; line-height: 1.7; }
  .field-input:focus, .field-textarea:focus {
    outline: 0; border-color: var(--c-lime); box-shadow: 0 0 0 4px rgba(200, 241, 53, .32);
  }

  /* ---------- CTA & 页脚 ---------- */
  .cta-band { background: var(--c-graphite); color: #FFFFFF; border-radius: 0; }
  .site-footer { background: var(--c-graphite); color: #C9CBD1; }
  .site-footer a { color: #C9CBD1; transition: color .2s ease; }
  .site-footer a:hover { color: var(--c-lime); text-decoration: underline; text-underline-offset: 4px; }
  .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
  .footer-title { color: #FFFFFF; font-size: 14px; font-weight: 700; letter-spacing: .08em; margin-bottom: 14px; }
  .footer-list { list-style: none; padding: 0; margin: 0; }
  .footer-list li { margin-bottom: 10px; font-size: 14.5px; }
  .footer-brand-mark {
    width: 34px; height: 34px; border-radius: 10px; background: var(--c-lime);
    display: grid; place-items: center;
  }
  .footer-brand-mark span { width: 14px; height: 14px; border: 2px solid var(--c-graphite); transform: rotate(45deg); display: block; }

  /* ---------- 动效 ---------- */
  .reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
  .reveal.in { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
  }

  /* ---------- 移动端抽屉 ---------- */
  .drawer {
    position: fixed; inset: 0; z-index: 90;
    background: var(--c-graphite); color: #F6F3EC;
    display: flex; flex-direction: column;
    padding: 24px;
    transform: translateY(-100%); transition: transform .32s ease;
  }
  .drawer.open { transform: translateY(0); }
  .drawer a { font-size: 20px; font-weight: 700; padding: 16px 0; border-bottom: 1px solid #22242A; display: block; }
  .drawer a.active { color: var(--c-lime); }
  .icon-btn {
    width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--c-line);
    background: #FFFFFF; display: grid; place-items: center; cursor: pointer;
  }

  /* ---------- 响应式 ---------- */
  @media (max-width: 1279px) {
    .nav-search { width: 168px; }
    .hero-copy { padding-right: 40px; }
    .b-tall { grid-column: span 12; }
    .b-side { grid-column: span 12; }
    .b-third { grid-column: span 6; }
  }
  @media (max-width: 1023px) {
    .nav-bar { grid-template-columns: 1fr auto; height: 62px; }
    .nav-links, .nav-search, .nav-divider { display: none; }
    .hero-grid { grid-template-columns: 1fr; min-height: 0; }
    .hero-copy { padding: calc(var(--nav-h) + 24px) 0 40px; }
    .hero-visual { min-height: 320px; height: 340px; margin-bottom: 48px; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .metric-cell:nth-child(2) { border-right: 0; }
    .metric-cell:nth-child(1), .metric-cell:nth-child(2) { border-bottom: 1px solid var(--c-line); }
    .section { padding: 72px 0; }
    .split-row { grid-template-columns: 1fr; gap: 28px; }
    .split-row.reverse .split-media { order: 0; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .price-card.featured { transform: none; }
    .price-card.featured:hover { transform: translateY(-4px); }
  }
  @media (max-width: 767px) {
    body { font-size: 16px; }
    .section { padding: 48px 0; }
    .shell { padding: 0 18px; }
    .b-third { grid-column: span 12; }
    .split-media img { height: 240px; }
    .hero-visual { height: 280px; min-height: 280px; }
    .hero-visual-inner { padding: 24px; }
    .hero-frame { display: none; }
    .metric-grid { grid-template-columns: 1fr; }
    .metric-cell { border-right: 0; border-bottom: 1px solid var(--c-line); }
    .metric-cell:last-child { border-bottom: 0; }
    .footer-grid { grid-template-columns: 1fr; }
    .btn { width: 100%; }
    .btn-inline { width: auto; }
  }

/* roulang page: article */
:root{
    --paper:#F6F3EC;
    --ink:#15161A;
    --graphite:#0F1013;
    --lime:#C8F135;
    --violet:#6A4CFF;
    --orange:#FF5C39;
    --muted:#6B6F76;
    --line:#E5E0D6;
    --radius-lg:20px;
    --radius-sm:14px;
    --shadow-soft:0 18px 50px rgba(15,16,19,.08);
    --shadow-dark:0 24px 80px rgba(0,0,0,.35);
    --nav-h:66px;
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"MiSans","HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4,p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:6px}
  .shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
  .num{font-family:"Barlow Condensed","HarmonyOS Sans SC","PingFang SC",sans-serif;font-weight:700;letter-spacing:.02em}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,243,236,.94);
    backdrop-filter:saturate(150%) blur(12px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:flex;align-items:center;gap:22px;
    height:var(--nav-h);
  }
  .brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;
    background:var(--graphite);position:relative;flex-shrink:0;
  }
  .brand-mark::after{
    content:"";position:absolute;inset:9px;border-radius:3px;
    background:var(--lime);
  }
  .brand-name{font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
  .header-divider{width:1px;height:26px;background:var(--line);flex-shrink:0}
  .nav-links{display:flex;align-items:center;gap:26px;flex:1 1 auto;min-width:0}
  .nav-links a{
    position:relative;font-size:15px;font-weight:600;color:#4A4D54;
    padding:6px 0;white-space:nowrap;transition:color .22s ease;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
    background:var(--lime);transition:right .25s ease;
  }
  .nav-links a:hover{color:var(--ink)}
  .nav-links a:hover::after{right:0}
  .nav-links a.active{color:var(--ink);font-weight:800}
  .nav-links a.active::after{right:0}
  .header-tools{display:flex;align-items:center;gap:14px;flex-shrink:0}
  .header-search{
    display:flex;align-items:center;gap:8px;
    width:200px;height:40px;padding:0 14px;
    background:#fff;border:1px solid var(--line);border-radius:999px;
    transition:border-color .22s ease,box-shadow .22s ease;
  }
  .header-search:focus-within{border-color:var(--lime);box-shadow:0 0 0 4px rgba(200,241,53,.28)}
  .header-search svg{width:16px;height:16px;stroke:var(--muted);flex-shrink:0}
  .header-search input{
    border:0;background:transparent;outline:none;width:100%;
    font-size:14px;color:var(--ink);
  }
  .header-search input::placeholder{color:#9C9FA6}
  .menu-toggle{
    display:none;width:42px;height:42px;border:1px solid var(--line);
    border-radius:12px;background:#fff;align-items:center;justify-content:center;
    cursor:pointer;
  }
  .menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
  .menu-toggle span::before,.menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  }
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}

  .mobile-drawer{
    display:none;position:fixed;inset:var(--nav-h) 0 0 0;z-index:55;
    background:var(--graphite);padding:28px 24px 40px;
    flex-direction:column;gap:6px;overflow-y:auto;
  }
  .mobile-drawer.is-open{display:flex}
  .mobile-drawer a{
    color:#F6F3EC;font-size:19px;font-weight:700;padding:14px 4px;
    border-bottom:1px solid #24262C;
  }
  .mobile-drawer a.active{color:var(--lime)}
  .mobile-drawer .drawer-foot{margin-top:26px;display:flex;flex-direction:column;gap:14px}
  .mobile-drawer .drawer-note{color:#8B8D94;font-size:13.5px}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:999px;
    font-size:15px;font-weight:700;border:1px solid transparent;
    transition:transform .22s ease,background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
    cursor:pointer;
  }
  .btn-lime{background:var(--lime);color:var(--ink)}
  .btn-lime:hover{background:var(--ink);color:var(--lime);transform:translateY(-2px)}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
  .btn-paper{background:transparent;border-color:rgba(246,243,236,.45);color:var(--paper)}
  .btn-paper:hover{background:var(--paper);color:var(--ink);transform:translateY(-2px)}
  .btn-sm{height:40px;padding:0 20px;font-size:14px}

  /* ---------- article hero ---------- */
  .article-hero{padding:calc(var(--nav-h) + 32px) 0 44px}
  .crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
  .crumbs a{color:var(--muted);transition:color .2s ease}
  .crumbs a:hover{color:var(--ink)}
  .crumbs .sep{color:#C2BCAE}
  .crumbs .current{color:var(--ink);font-weight:600;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;letter-spacing:.04em;
    color:#3F3A18;background:rgba(200,241,53,.55);
    border-radius:999px;padding:6px 14px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ink)}
  .article-title{
    margin-top:22px;
    font-size:clamp(30px,4.2vw,50px);
    font-weight:800;line-height:1.22;letter-spacing:-.02em;
    max-width:24ch;
  }
  .article-lead{
    margin-top:20px;max-width:62ch;font-size:17.5px;line-height:1.85;color:#4A4D54;
  }
  .article-meta{
    margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
    font-size:13.5px;color:var(--muted);
    padding-top:20px;border-top:1px solid var(--line);
  }
  .article-meta .chip{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);
    color:#3A3C42;font-weight:600;
  }

  /* ---------- layout ---------- */
  .article-layout{
    display:block;
    padding:12px 0 8px;
  }
  .article-col{max-width:760px;margin:0 auto}
  .toc-col{display:none}
  @media (min-width:1280px){
    .article-layout.has-toc{
      display:grid;
      grid-template-columns:minmax(0,760px) 220px;
      gap:64px;
      justify-content:center;
      align-items:start;
    }
    .article-layout.has-toc .article-col{margin:0}
    .article-layout.has-toc .toc-col{display:block}
  }
  .toc{
    position:sticky;top:calc(var(--nav-h) + 24px);
    border-left:2px solid var(--line);padding-left:18px;
  }
  .toc-title{font-size:12.5px;font-weight:800;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
  .toc a{
    display:block;font-size:14px;color:#5A5D64;line-height:1.6;
    padding:6px 0;transition:color .2s ease,transform .2s ease;
  }
  .toc a:hover{color:var(--ink);transform:translateX(3px)}
  .toc a.is-current{color:var(--ink);font-weight:700}

  /* ---------- article body ---------- */
  .article-body{
    font-size:17.5px;line-height:1.92;color:#24262C;letter-spacing:.002em;
  }
  .article-body > *:first-child{margin-top:0}
  .article-body p{margin:0 0 1.3em}
  .article-body h2{
    font-size:26px;font-weight:800;line-height:1.4;color:var(--ink);
    margin:2.2em 0 .85em;padding-left:16px;border-left:4px solid var(--lime);
    scroll-margin-top:calc(var(--nav-h) + 24px);
  }
  .article-body h3{
    font-size:20.5px;font-weight:800;color:var(--ink);
    margin:1.9em 0 .6em;scroll-margin-top:calc(var(--nav-h) + 24px);
  }
  .article-body h4{font-size:18px;font-weight:800;color:var(--ink);margin:1.6em 0 .5em}
  .article-body a{color:#4B37D8;text-decoration:underline;text-underline-offset:3px}
  .article-body a:hover{color:var(--lime);background:var(--graphite)}
  .article-body strong{font-weight:800;color:var(--ink)}
  .article-body blockquote{
    margin:1.7em 0;padding:18px 24px;
    border-left:3px solid var(--violet);
    background:#fff;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
    color:#3A3C42;font-size:17px;
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:2px}
  .article-body ul li{position:relative;padding-left:22px;margin-bottom:.6em}
  .article-body ul li::before{
    content:"";position:absolute;left:2px;top:.72em;
    width:9px;height:9px;border:2px solid var(--lime);border-radius:2px;
    transform:rotate(45deg);
  }
  .article-body ol{counter-reset:artc}
  .article-body ol li{position:relative;padding-left:34px;margin-bottom:.6em;counter-increment:artc}
  .article-body ol li::before{
    content:counter(artc,decimal-leading-zero);
    position:absolute;left:0;top:.1em;
    font-family:"Barlow Condensed",sans-serif;font-weight:700;
    color:var(--violet);font-size:15px;
  }
  .article-body img{
    border-radius:16px;margin:1.8em auto;max-width:100%;height:auto;
    box-shadow:var(--shadow-soft);
  }
  .article-body figure{margin:1.8em 0}
  .article-body figcaption{
    text-align:center;font-size:13.5px;color:var(--muted);margin-top:10px;
  }
  .article-body table{
    display:block;width:100%;overflow-x:auto;
    border-collapse:collapse;margin:1.7em 0;font-size:15.5px;
    border:1px solid var(--line);border-radius:var(--radius-sm);
  }
  .article-body thead{background:var(--graphite);color:var(--paper)}
  .article-body th,.article-body td{
    padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  .article-body tbody tr:nth-child(even){background:rgba(229,224,214,.28)}
  .article-body pre{
    background:var(--graphite);color:var(--paper);
    padding:20px 22px;border-radius:var(--radius-sm);
    overflow-x:auto;font-size:14.5px;line-height:1.7;margin:1.7em 0;
  }
  .article-body code{
    background:rgba(106,76,255,.1);color:#3E2CB8;
    padding:2px 6px;border-radius:6px;font-size:.92em;
  }
  .article-body pre code{background:transparent;color:inherit;padding:0}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

  .article-cover{
    border-radius:var(--radius-lg);overflow:hidden;margin-bottom:38px;
    box-shadow:var(--shadow-soft);
  }
  .article-cover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}

  /* ---------- empty state ---------- */
  .empty-box{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:56px 32px;text-align:center;box-shadow:var(--shadow-soft);
  }
  .empty-mark{
    width:78px;height:78px;margin:0 auto 22px;border-radius:20px;
    background:var(--graphite);position:relative;
  }
  .empty-mark::after{
    content:"";position:absolute;inset:20px;border:2px solid var(--lime);border-radius:6px;
  }

  /* ---------- footer of article ---------- */
  .article-foot{
    margin-top:52px;padding-top:28px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
  }
  .tag-row{display:flex;flex-wrap:wrap;gap:10px}
  .tag{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;
    border-radius:999px;border:1px solid var(--line);background:#fff;
    font-size:13.5px;font-weight:600;color:#4A4D54;
    transition:border-color .2s ease,color .2s ease,transform .2s ease;
  }
  .tag:hover{border-color:var(--lime);color:var(--ink);transform:translateY(-2px)}
  .back-link{
    display:inline-flex;align-items:center;gap:8px;
    font-size:14.5px;font-weight:700;color:var(--ink);
    border-bottom:2px solid var(--lime);padding-bottom:3px;
    transition:gap .2s ease;
  }
  .back-link:hover{gap:14px}

  /* ---------- related ---------- */
  .section{padding:84px 0}
  .section-tight{padding:64px 0}
  .section-head{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end;justify-content:space-between;margin-bottom:40px}
  .section-title{font-size:clamp(24px,3vw,34px);font-weight:800;letter-spacing:-.02em;line-height:1.3}
  .section-sub{margin-top:10px;max-width:56ch;color:#5A5D64;font-size:15.5px}
  .section-link{font-size:14.5px;font-weight:700;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:3px}
  .related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
  .rel-card{
    display:flex;flex-direction:column;background:#fff;
    border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
    transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
  }
  .rel-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--shadow-soft)}
  .rel-thumb{overflow:hidden;aspect-ratio:16/10;background:var(--graphite)}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
  .rel-card:hover .rel-thumb img{transform:scale(1.03)}
  .rel-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
  .rel-tag{font-size:12.5px;font-weight:700;color:#3F3A18;background:rgba(200,241,53,.5);border-radius:999px;padding:4px 12px;align-self:flex-start}
  .rel-tag.violet{color:#2C1E86;background:rgba(106,76,255,.16)}
  .rel-tag.orange{color:#7A2312;background:rgba(255,92,57,.16)}
  .rel-title{font-size:19px;font-weight:800;line-height:1.45}
  .rel-desc{font-size:14.5px;color:#5A5D64;line-height:1.75}
  .rel-meta{margin-top:auto;font-size:13px;color:var(--muted)}

  /* ---------- cta band ---------- */
  .cta-band{
    background:var(--graphite);color:var(--paper);
    border-radius:var(--radius-lg);padding:60px 48px;
    position:relative;overflow:hidden;box-shadow:var(--shadow-dark);
  }
  .cta-band::after{
    content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
    border:2px solid rgba(200,241,53,.45);border-radius:32px;transform:rotate(18deg);
  }
  .cta-inner{position:relative;z-index:2;max-width:620px}
  .cta-title{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.3;color:var(--lime)}
  .cta-text{margin-top:16px;color:#B9BBC0;font-size:16px;line-height:1.85}
  .cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}
  .cta-link{font-size:14.5px;font-weight:700;color:var(--paper);border-bottom:2px solid var(--lime);padding-bottom:3px}
  .cta-link:hover{color:var(--lime)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--graphite);color:#B9BBC0;margin-top:84px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
  .footer-brand-mark{
    width:32px;height:32px;border-radius:10px;background:#1B1D22;
    display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .footer-brand-mark span{width:13px;height:13px;background:var(--lime);border-radius:3px;display:block}
  .footer-title{font-size:13px;font-weight:800;letter-spacing:.1em;color:#F6F3EC;margin-bottom:18px}
  .footer-list li{margin-bottom:12px;font-size:14.5px;line-height:1.6}
  .footer-list a{transition:color .2s ease,border-color .2s ease;border-bottom:1px solid transparent}
  .footer-list a:hover{color:var(--lime);border-color:var(--lime)}

  /* ---------- motion ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease}
  .reveal.is-in{opacity:1;transform:none}

  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
  }

  /* ---------- responsive ---------- */
  @media (max-width:1279px){
    .header-search{width:172px}
    .nav-links{gap:20px}
  }
  @media (max-width:1023px){
    .nav-links,.header-divider,.header-search,.header-tools .btn{display:none}
    .menu-toggle{display:inline-flex}
    .header-tools{margin-left:auto}
    .article-hero{padding-top:calc(var(--nav-h) + 28px)}
    .section{padding:64px 0}
    .cta-band{padding:48px 32px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  }
  @media (max-width:767px){
    .shell{padding:0 18px}
    .article-title{font-size:clamp(26px,7vw,36px);max-width:none}
    .article-lead{font-size:16px}
    .article-body{font-size:16.5px;line-height:1.88}
    .article-body h2{font-size:22px}
    .article-body h3{font-size:18.5px}
    .section{padding:48px 0}
    .related-grid{grid-template-columns:1fr}
    .cta-band{padding:40px 24px;border-radius:16px}
    .cta-actions .btn{width:100%}
    .footer-grid{grid-template-columns:1fr}
    .empty-box{padding:40px 20px}
  }

/* roulang page: category1 */
:root{
    --lime:#C8F135;
    --violet:#6A4CFF;
    --orange:#FF5C39;
    --graphite:#0F1013;
    --graphite-2:#17191E;
    --paper:#F6F3EC;
    --card:#FFFFFF;
    --ink:#15161A;
    --muted:#6B6F76;
    --line:#E5E0D6;
    --line-dark:#24262C;
    --r-lg:20px;
    --r-sm:14px;
    --r-xs:12px;
    --shadow-soft:0 18px 50px rgba(15,16,19,.08);
    --shadow-deep:0 24px 80px rgba(0,0,0,.35);
    --nav-h:66px;
    --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);
    font-family:MiSans,"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease)}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  input{font:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--violet);outline-offset:2px}

  .shell{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
  .num{font-family:"Barlow Condensed","Oswald","HarmonyOS Sans SC",system-ui,sans-serif;font-variant-numeric:tabular-nums;letter-spacing:.01em}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    height:var(--nav-h);
    background:rgba(246,243,236,.88);
    backdrop-filter:saturate(160%) blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    height:var(--nav-h);
    display:flex;align-items:center;justify-content:space-between;gap:20px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .brand-mark{
    width:26px;height:26px;border-radius:8px;background:var(--graphite);
    display:inline-flex;align-items:center;justify-content:center;position:relative;
  }
  .brand-mark span{width:10px;height:10px;border-radius:3px;background:var(--lime);display:block}
  .brand-text{font-weight:800;font-size:16.5px;letter-spacing:-.01em;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:2px;margin-left:6px}
  .nav-links a{
    font-size:14.5px;color:var(--muted);padding:8px 13px;border-radius:999px;white-space:nowrap;
  }
  .nav-links a:hover{color:var(--ink);background:rgba(15,16,19,.05)}
  .nav-links a.active{background:var(--lime);color:var(--ink);font-weight:700}
  .header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
  .nav-divider{width:1px;height:26px;background:var(--line)}
  .search-box{
    display:flex;align-items:center;gap:8px;height:38px;padding:0 14px;
    border:1px solid var(--line);border-radius:999px;background:#fff;width:200px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
  }
  .search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,241,53,.35)}
  .search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink)}
  .search-box svg{flex:0 0 auto;opacity:.55}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 22px;border-radius:999px;font-size:14.5px;font-weight:700;
    border:1px solid transparent;white-space:nowrap;
  }
  .btn-sm{height:38px;padding:0 18px;font-size:14px}
  .btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
  .btn-primary:hover{background:var(--graphite);color:var(--lime);border-color:var(--graphite);transform:translateY(-2px)}
  .btn-ghost{background:transparent;color:var(--ink);border-color:rgba(21,22,26,.28)}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-2px)}
  .btn-dark{background:var(--graphite);color:#fff;border-color:var(--graphite)}
  .btn-dark:hover{background:var(--lime);color:var(--ink);border-color:var(--lime);transform:translateY(-2px)}
  .btn-outline-light{background:transparent;color:var(--paper);border-color:rgba(246,243,236,.42)}
  .btn-outline-light:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);transform:translateY(-2px)}
  .hamburger{
    width:42px;height:38px;border:1px solid var(--line);border-radius:12px;background:#fff;
    display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px
  }
  .hamburger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
  .hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .hamburger.open span:nth-child(2){opacity:0}
  .hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

  .mobile-drawer{
    position:fixed;inset:0;background:var(--graphite);z-index:80;
    padding:26px 24px 32px;display:flex;flex-direction:column;
    transform:translateX(100%);transition:transform .32s var(--ease);
    visibility:hidden;
  }
  .mobile-drawer.open{transform:translateX(0);visibility:visible}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:34px}
  .drawer-brand{color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;gap:10px}
  .drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid rgba(246,243,236,.28);color:var(--paper);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center}
  .drawer-links{display:flex;flex-direction:column;gap:4px}
  .drawer-links a{color:#F6F3EC;font-size:19px;font-weight:700;padding:14px 4px;border-bottom:1px solid var(--line-dark)}
  .drawer-links a.active{color:var(--lime)}
  .drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:28px}
  .drawer-foot .btn{width:100%}

  /* ---------- page basics ---------- */
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);padding-top:26px}
  .breadcrumb a:hover{color:var(--ink)}
  .breadcrumb .sep{opacity:.5}
  .breadcrumb .current{color:var(--ink);font-weight:600}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
    color:var(--ink);background:rgba(200,241,53,.55);border:1px solid rgba(21,22,26,.08);
    padding:6px 14px;border-radius:999px
  }
  .section{padding:86px 0}
  .section-tight{padding:64px 0}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
  .section-head h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.2}
  .section-head p{color:var(--muted);font-size:15.5px;margin-top:10px;max-width:62ch}
  .link-arrow{font-size:14.5px;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
  .link-arrow:hover{color:var(--violet)}
  .link-arrow::after{content:"→";transition:transform .2s var(--ease)}
  .link-arrow:hover::after{transform:translateX(4px)}

  /* ---------- hero ---------- */
  .cat-hero{
    display:grid;grid-template-columns:52% 48%;
    min-height:420px;
    margin-top:34px;
    border-radius:26px;overflow:hidden;
    border:1px solid var(--line);background:#fff;
    box-shadow:var(--shadow-soft);
  }
  .cat-hero-copy{padding:clamp(30px,4vw,56px);display:flex;flex-direction:column;justify-content:center;gap:20px;background:#fff}
  .cat-hero-copy h1{font-size:clamp(32px,3.6vw,48px);font-weight:800;line-height:1.16;letter-spacing:-.025em}
  .cat-hero-copy p{color:var(--muted);font-size:16px;max-width:46ch}
  .cat-hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
  .cat-hero-visual{
    position:relative;min-height:300px;
    background-image:linear-gradient(180deg,rgba(15,16,19,.42),rgba(15,16,19,.78)),url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center right;
    display:flex;align-items:flex-end;
  }
  .cat-hero-visual .frame{
    position:absolute;inset:26px;border:1px solid rgba(200,241,53,.5);border-radius:16px;pointer-events:none
  }
  .cat-hero-visual .caption{margin:0 32px 30px;color:#F6F3EC}
  .cat-hero-visual .caption strong{display:block;font-size:15px;letter-spacing:.06em;color:var(--lime);margin-bottom:6px}
  .cat-hero-visual .caption span{font-size:14px;color:rgba(246,243,236,.82);line-height:1.7}

  /* ---------- metric strip ---------- */
  .metric-strip{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  }
  .metric{background:#fff;padding:26px 24px}
  .metric .num{font-size:38px;font-weight:800;line-height:1;letter-spacing:-.02em}
  .metric .num em{font-style:normal;font-size:16px;font-weight:700;margin-left:4px;color:var(--muted)}
  .metric p{font-size:14px;color:var(--muted);margin-top:10px}

  /* ---------- anchor + bento ---------- */
  .layout-anchor{display:grid;grid-template-columns:250px minmax(0,1fr);gap:44px;align-items:start}
  .anchor-nav{position:sticky;top:calc(var(--nav-h) + 28px)}
  .anchor-nav .anchor-title{font-size:12.5px;letter-spacing:.1em;color:var(--muted);font-weight:700;margin-bottom:14px}
  .anchor-nav ul{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);padding-left:0}
  .anchor-nav a{
    display:block;font-size:14.5px;color:var(--muted);padding:9px 0 9px 16px;border-left:2px solid transparent;margin-left:-1px;
  }
  .anchor-nav a:hover{color:var(--ink);border-left-color:rgba(21,22,26,.35)}
  .anchor-nav a.active{color:var(--ink);font-weight:700;border-left-color:var(--lime)}
  .anchor-note{
    margin-top:24px;padding:18px;border-radius:var(--r-sm);background:#fff;border:1px solid var(--line);
    font-size:13.5px;color:var(--muted)
  }
  .anchor-note strong{display:block;color:var(--ink);font-size:14.5px;margin-bottom:6px}

  .bento{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;
    transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
  }
  .card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--shadow-soft)}
  .card-lg{grid-column:span 3;padding:0;overflow:hidden;display:flex;flex-direction:column}
  .card-md{grid-column:span 2}
  .card-wide{grid-column:span 6}
  .card-lg .cover{position:relative;overflow:hidden}
  .card-lg .cover img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
  .card-lg:hover .cover img{transform:scale(1.03)}
  .card-body{padding:24px 26px 26px}
  .card h3{font-size:21px;font-weight:800;letter-spacing:-.01em;line-height:1.35}
  .card p{font-size:14.5px;color:var(--muted);margin-top:10px}
  .badge{
    display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
    padding:4px 11px;border-radius:999px;background:rgba(200,241,53,.55);color:var(--ink)
  }
  .badge-violet{background:rgba(106,76,255,.14);color:#4A34C4}
  .badge-orange{background:rgba(255,92,57,.14);color:#C63A1B}
  .card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
  .feature-list{margin-top:18px;display:flex;flex-direction:column;gap:10px}
  .feature-list li{font-size:14px;color:var(--ink);display:flex;gap:10px;line-height:1.6}
  .feature-list li::before{content:"";flex:0 0 auto;width:7px;height:7px;border-radius:2px;background:var(--lime);margin-top:8px}
  .icon-tile{
    width:44px;height:44px;border-radius:14px;background:var(--graphite);color:var(--lime);
    display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px
  }
  .stat-inline{display:flex;gap:26px;flex-wrap:wrap;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
  .stat-inline div{min-width:88px}
  .stat-inline .num{font-size:24px;font-weight:800;line-height:1.1}
  .stat-inline span{font-size:13px;color:var(--muted)}

  /* ---------- spec band ---------- */
  .band{background:var(--graphite);color:var(--paper);border-radius:26px;padding:clamp(30px,4.4vw,56px)}
  .band h2{font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.02em;color:#fff}
  .band p{color:rgba(246,243,236,.72);font-size:15px;margin-top:10px;max-width:70ch}
  .band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
  .band-card{border:1px solid var(--line-dark);border-radius:var(--r-sm);padding:22px;background:var(--graphite-2)}
  .band-card h3{font-size:17px;font-weight:700;color:#fff}
  .band-card p{font-size:14px;margin-top:8px}
  .band-card .num{color:var(--lime)}

  /* ---------- table ---------- */
  .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff}
  table.compare{width:100%;border-collapse:collapse;min-width:760px}
  table.compare th,table.compare td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
  table.compare thead th{background:var(--graphite);color:var(--paper);font-weight:700;font-size:14px;letter-spacing:.02em;border-bottom:0}
  table.compare tbody tr:nth-child(even){background:rgba(229,224,214,.22)}
  table.compare tbody th{font-weight:700;color:var(--ink);background:transparent}
  table.compare td{color:var(--muted)}
  table.compare td strong{color:var(--ink);font-weight:700}
  table.compare tbody tr:hover{background:rgba(200,241,53,.16)}

  /* ---------- faq ---------- */
  .faq-layout{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:48px;align-items:start}
  .faq-side{position:sticky;top:calc(var(--nav-h) + 28px)}
  .faq-side h2{font-size:clamp(26px,3vw,34px);font-weight:800;letter-spacing:-.02em}
  .faq-side p{color:var(--muted);font-size:14.5px;margin-top:12px}
  .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:20px;
    padding:22px 4px;font-size:17px;font-weight:700;line-height:1.5
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary .plus{
    flex:0 0 auto;width:26px;height:26px;border:1px solid rgba(21,22,26,.28);border-radius:8px;position:relative;
    transition:transform .28s var(--ease),background-color .28s var(--ease),border-color .28s var(--ease)
  }
  .faq-item summary .plus::before,.faq-item summary .plus::after{
    content:"";position:absolute;left:50%;top:50%;background:var(--ink);transform:translate(-50%,-50%)
  }
  .faq-item summary .plus::before{width:12px;height:2px}
  .faq-item summary .plus::after{width:2px;height:12px}
  .faq-item[open] summary .plus{transform:rotate(45deg);background:var(--lime);border-color:var(--lime)}
  .faq-item .answer{padding:0 4px 24px;color:var(--muted);font-size:15px;max-width:76ch}

  /* ---------- cta ---------- */
  .cta-band{
    background:var(--graphite);border-radius:26px;padding:clamp(32px,4.6vw,60px);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
    box-shadow:var(--shadow-deep)
  }
  .cta-band h2{color:var(--lime);font-size:clamp(26px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.2}
  .cta-band p{color:rgba(246,243,236,.72);font-size:15px;margin-top:12px;max-width:56ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
  .cta-textlink{color:var(--paper);font-size:14.5px;font-weight:700;border-bottom:1px solid rgba(246,243,236,.45);padding-bottom:2px}
  .cta-textlink:hover{color:var(--lime);border-color:var(--lime)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--graphite);color:var(--paper);margin-top:96px}
  .site-footer .shell{padding-top:64px;padding-bottom:64px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
  .footer-title{color:#fff;font-weight:700;font-size:14px;letter-spacing:.06em;margin-bottom:16px}
  .footer-list li{margin-bottom:11px;font-size:14px;color:#8B8D94}
  .footer-list a{color:#A3A6AD;font-size:14px}
  .footer-list a:hover{color:var(--lime);text-decoration:underline;text-underline-offset:4px}
  .footer-brand-mark{
    width:26px;height:26px;border-radius:8px;background:var(--lime);display:inline-flex;align-items:center;justify-content:center
  }
  .footer-brand-mark span{width:10px;height:10px;border-radius:3px;background:var(--graphite);display:block}

  /* ---------- motion ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
  .reveal.in-view{opacity:1;transform:none}

  /* ---------- responsive ---------- */
  @media (max-width:1279px){
    .cat-hero{grid-template-columns:55% 45%}
    .bento{gap:18px}
    .card-lg{grid-column:span 3}
  }
  @media (max-width:1023px){
    .nav-links,.nav-divider,.search-box{display:none}
    .hamburger{display:flex}
    .layout-anchor{grid-template-columns:1fr;gap:28px}
    .anchor-nav{position:static}
    .anchor-nav ul{flex-direction:row;flex-wrap:wrap;gap:6px;border-left:0;padding-left:0}
    .anchor-nav a{border-left:0;border:1px solid var(--line);border-radius:999px;padding:7px 14px;margin-left:0;background:#fff}
    .anchor-nav a:hover{border-color:var(--lime)}
    .anchor-nav a.active{border-color:var(--lime);background:rgba(200,241,53,.35)}
    .anchor-note{display:none}
    .cat-hero{grid-template-columns:1fr}
    .cat-hero-visual{min-height:280px;background-position:center}
    .bento{grid-template-columns:repeat(4,1fr)}
    .card-lg{grid-column:span 2}
    .card-md{grid-column:span 2}
    .card-wide{grid-column:span 4}
    .band-grid{grid-template-columns:1fr}
    .faq-layout{grid-template-columns:1fr;gap:24px}
    .faq-side{position:static}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
    .metric-strip{grid-template-columns:repeat(2,1fr)}
  }
  @media (max-width:767px){
    .section{padding:56px 0}
    .section-tight{padding:44px 0}
    .cat-hero{border-radius:20px}
    .cat-hero-copy h1{font-size:clamp(28px,8vw,36px)}
    .cat-hero-visual{min-height:230px}
    .cat-hero-visual .frame{inset:16px}
    .cat-hero-visual .caption{margin:0 22px 22px}
    .bento{grid-template-columns:1fr}
    .card-lg,.card-md,.card-wide{grid-column:span 1}
    .card-lg .cover img{aspect-ratio:4/3}
    .band{border-radius:20px}
    .band-grid{gap:16px}
    .faq-item summary{font-size:16px}
    .cta-band{border-radius:20px}
    .cta-actions .btn{width:100%}
    .btn{width:auto}
    .metric{padding:20px 18px}
    .metric .num{font-size:30px}
    .footer-grid{grid-template-columns:1fr}
    .site-footer{margin-top:60px}
  }
  @media (max-width:519px){
    .shell{padding-left:18px;padding-right:18px}
    .brand-text{font-size:15px}
    .metric-strip{grid-template-columns:1fr}
    .header-actions .btn{display:none}
    .cat-hero-cta .btn{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category2 */
:root{
  --lime:#C8F135;
  --purple:#6A4CFF;
  --orange:#FF5C39;
  --paper:#F6F3EC;
  --ink:#15161A;
  --graphite:#0F1013;
  --muted:#6B6F76;
  --line:#E5E0D6;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --pill:999px;
  --sh-soft:0 18px 50px rgba(15,16,19,.08);
  --sh-hard:0 28px 70px rgba(15,16,19,.14);
  --sh-dark:0 24px 80px rgba(0,0,0,.35);
  --shell:1240px;
  --nav-h:66px;
  --font:"MiSans","HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow Condensed","Oswald","MiSans","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 28px)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
button,input{font-family:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:3px solid rgba(106,76,255,.5);outline-offset:3px;border-radius:8px}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-dark{background:var(--graphite);color:#EDEBE5}
.section-paper-alt{background:#FBF9F4}
@media (max-width:1023px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media (max-width:767px){.section{padding:48px 0}.section-tight{padding:44px 0}.shell{padding:0 18px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,243,236,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.header-inner{display:flex;align-items:center;gap:22px;height:var(--nav-h)}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--ink);display:grid;place-items:center;flex:none}
.brand-mark span{display:block;width:11px;height:11px;border-radius:3px;background:var(--lime)}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{padding:8px 13px;border-radius:var(--pill);font-size:14.5px;font-weight:600;color:#45484F;transition:background .2s,color .2s}
.nav-links a:hover{background:#EDE8DC;color:var(--ink)}
.nav-links a.active{background:var(--lime);color:var(--ink)}
.nav-links a.active:hover{background:var(--lime);color:var(--ink)}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;gap:8px;width:210px;height:38px;padding:0 14px;border-radius:var(--pill);background:#fff;border:1px solid var(--line);transition:border-color .2s,box-shadow .2s}
.search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 4px rgba(200,241,53,.28)}
.search-box svg{flex:none;color:var(--muted)}
.search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink)}
.search-box input::placeholder{color:#A3A6AD}
.menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;place-items:center}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
@media (max-width:1119px){
  .search-box{width:160px}
  .nav-links a{padding:8px 10px;font-size:14px}
}
@media (max-width:1023px){
  .nav-links,.search-box,.header-tools .header-cta{display:none}
  .menu-toggle{display:grid}
}
.drawer{position:fixed;inset:0;z-index:120;background:var(--graphite);color:var(--paper);display:flex;flex-direction:column;padding:22px 22px 32px;transform:translateX(102%);transition:transform .34s cubic-bezier(.4,0,.2,1);overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid #24262C}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid #2C2E35;display:grid;place-items:center;color:#F6F3EC;font-size:20px;line-height:1}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-top:26px}
.drawer-nav a{padding:14px 4px;font-size:19px;font-weight:700;color:#C9CACF;border-bottom:1px solid #1D1F24}
.drawer-nav a.active{color:var(--lime)}
.drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:12px}
.drawer-foot input{height:48px;border-radius:var(--r-sm);border:1px solid #2C2E35;background:#17181D;color:#F6F3EC;padding:0 14px;font-size:15px}
.drawer-foot input:focus{outline:none;border-color:var(--lime)}
body.no-scroll{overflow:hidden}

/* ---------- buttons / badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;height:46px;padding:0 24px;border-radius:var(--pill);font-size:14.5px;font-weight:700;border:1px solid transparent;transition:background .22s,color .22s,transform .22s,border-color .22s,box-shadow .22s;white-space:nowrap}
.btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 12px 28px rgba(200,241,53,.32)}
.btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-2px);box-shadow:0 16px 34px rgba(15,16,19,.24)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{border-color:rgba(21,22,26,.35);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#F6F3EC;border-color:var(--ink);transform:translateY(-2px)}
.btn-ghost-light{border-color:rgba(246,243,236,.42);color:#F6F3EC;background:rgba(246,243,236,.04)}
.btn-ghost-light:hover{background:#F6F3EC;color:var(--graphite);border-color:#F6F3EC;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.badge{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:var(--pill);font-size:12.5px;font-weight:700;letter-spacing:.02em}
.badge-lime{background:rgba(200,241,53,.2);color:#4E5F09;border:1px solid rgba(200,241,53,.5)}
.badge-purple{background:rgba(106,76,255,.1);color:#4A33C4;border:1px solid rgba(106,76,255,.28)}
.badge-orange{background:rgba(255,92,57,.1);color:#B8381C;border:1px solid rgba(255,92,57,.28)}
.badge-dark{background:rgba(200,241,53,.14);color:var(--lime);border:1px solid rgba(200,241,53,.34)}

/* ---------- hero ---------- */
.uc-hero{position:relative;overflow:hidden;background:var(--graphite);color:#F6F3EC}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center 32%}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,16,19,.96) 0%,rgba(15,16,19,.86) 44%,rgba(15,16,19,.5) 100%)}
.hero-deco{position:absolute;right:6%;top:18%;width:210px;height:210px;border:1px solid rgba(200,241,53,.5);border-radius:28px;transform:rotate(12deg);pointer-events:none}
.hero-deco::after{content:"";position:absolute;right:26px;bottom:26px;width:72px;height:72px;border:1px solid rgba(200,241,53,.7);border-radius:14px;transform:rotate(-24deg)}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:88px}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13.5px;color:#9B9DA4;margin-bottom:26px}
.crumbs a:hover{color:var(--lime)}
.crumbs .cur{color:#F6F3EC}
.hero-title{font-size:clamp(34px,5vw,60px);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:20px 0 0;max-width:20ch}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.85;color:#C2C4CA;max-width:60ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:60px;padding-top:32px;border-top:1px solid rgba(246,243,236,.16)}
.metric-num{display:block;font-family:var(--font-num);font-size:42px;font-weight:700;line-height:1;color:var(--lime);letter-spacing:.02em}
.metric-lab{display:block;margin-top:10px;font-size:14px;color:#B4B6BD;line-height:1.6}
@media (max-width:1023px){
  .hero-inner{padding-top:72px;padding-bottom:64px}
  .hero-deco{display:none}
  .hero-metrics{grid-template-columns:repeat(2,1fr);gap:20px;margin-top:44px}
}
@media (max-width:520px){
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .metric-num{font-size:34px}
}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px}
.sec-title{font-size:clamp(26px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.22}
.sec-desc{margin-top:14px;font-size:16.5px;color:var(--muted);max-width:64ch}
.section-dark .sec-desc{color:#9B9DA4}
.sec-link{font-size:14.5px;font-weight:700;padding-bottom:3px;border-bottom:2px solid var(--lime);white-space:nowrap;transition:color .2s,border-color .2s}
.sec-link:hover{color:var(--purple);border-color:var(--purple)}
@media (max-width:767px){.sec-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:32px}}

/* ---------- scene grid ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-soft);transition:transform .26s,border-color .26s,box-shadow .26s}
.scene-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--sh-hard)}
.scene-card h3{margin:18px 0 10px;font-size:22px;font-weight:800;letter-spacing:-.01em}
.scene-card p{font-size:15.5px;color:var(--muted);line-height:1.8}
.scene-card .dot-list{margin-top:18px}
.scene-card:nth-child(1){grid-column:span 5}
.scene-card:nth-child(2){grid-column:span 7}
.scene-card.wide{grid-column:span 12;display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.scene-card.wide img{border-radius:var(--r-md);aspect-ratio:16/10;object-fit:cover;width:100%}
.dot-list li{position:relative;padding-left:20px;font-size:14.5px;color:#494C53;margin-bottom:10px;line-height:1.7}
.dot-list li::before{content:"";position:absolute;left:0;top:10px;width:7px;height:7px;border-radius:2px;background:var(--lime);border:1px solid rgba(15,16,19,.25)}
@media (max-width:900px){
  .scene-card:nth-child(1),.scene-card:nth-child(2){grid-column:span 12}
  .scene-card.wide{grid-template-columns:1fr;gap:24px}
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.step{position:relative;padding:28px 22px;border-radius:var(--r-md);background:#17181D;border:1px solid #24262C;transition:transform .26s,border-color .26s,background .26s}
.step:hover{transform:translateY(-4px);border-color:rgba(200,241,53,.55);background:#1B1C22}
.step-num{display:block;font-family:var(--font-num);font-size:34px;font-weight:700;line-height:1;color:var(--lime);letter-spacing:.04em}
.step h3{margin:18px 0 9px;font-size:17px;font-weight:700;color:#F6F3EC}
.step p{font-size:14px;color:#9B9DA4;line-height:1.72}
@media (max-width:1023px){.steps{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.steps{grid-template-columns:1fr}}

/* ---------- split scene blocks ---------- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;padding:46px 0;border-bottom:1px solid var(--line)}
.split:last-child{border-bottom:0}
.split.rev .split-media{order:2}
.split-media{overflow:hidden;border-radius:var(--r-lg);box-shadow:var(--sh-soft);border:1px solid var(--line)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.split:hover .split-media img{transform:scale(1.03)}
.split-title{margin:18px 0 12px;font-size:clamp(22px,2.5vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
.split-body p{font-size:16px;color:var(--muted);line-height:1.85}
.check-list{margin-top:20px}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:#40434A;margin-bottom:11px;line-height:1.7}
.check-list li::before{content:"";position:absolute;left:0;top:7px;width:12px;height:12px;border-radius:3px;background:rgba(200,241,53,.55);border:1px solid rgba(15,16,19,.22)}
.text-link{display:inline-flex;align-items:center;gap:7px;margin-top:24px;font-size:14.5px;font-weight:700;border-bottom:2px solid var(--lime);padding-bottom:3px;transition:color .2s,border-color .2s}
.text-link:hover{color:var(--purple);border-color:var(--purple)}
@media (max-width:1023px){
  .split{grid-template-columns:1fr;gap:28px;padding:34px 0}
  .split.rev .split-media{order:0}
}

/* ---------- tabs ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.tab{padding:11px 22px;border-radius:var(--pill);border:1px solid var(--line);background:#fff;font-size:14.5px;font-weight:700;color:#4A4D54;transition:all .22s}
.tab:hover{border-color:var(--ink);color:var(--ink)}
.tab.active{background:var(--ink);border-color:var(--ink);color:#F6F3EC}
.tab-panel{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:36px;box-shadow:var(--sh-soft)}
.tab-panel.active{display:block;animation:fadeUp .35s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.tab-panel h3{font-size:22px;font-weight:800;margin-bottom:8px}
.tab-panel .panel-sub{font-size:15px;color:var(--muted);margin-bottom:22px}
.panel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 34px}
.panel-grid li{position:relative;padding-left:20px;font-size:15px;color:#43464D;line-height:1.75}
.panel-grid li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--purple)}
@media (max-width:767px){.tab-panel{padding:24px}.panel-grid{grid-template-columns:1fr}}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;box-shadow:var(--sh-soft)}
table.spec{width:100%;min-width:720px;border-collapse:collapse;font-size:15px}
table.spec thead th{background:var(--graphite);color:#F6F3EC;text-align:left;font-weight:700;font-size:14px;letter-spacing:.02em;padding:16px 20px;white-space:nowrap}
table.spec tbody td{padding:16px 20px;border-top:1px solid var(--line);color:#43464D;line-height:1.7}
table.spec tbody tr:nth-child(even){background:#FBFAF6}
table.spec tbody tr:hover{background:rgba(200,241,53,.12)}
table.spec td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(240px,340px) 1fr;gap:56px;align-items:start}
.faq-sticky{position:sticky;top:calc(var(--nav-h) + 30px)}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:24px 4px;font-size:17.5px;font-weight:700;cursor:pointer;list-style:none;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--purple)}
.faq-icon{position:relative;flex:none;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .28s,opacity .28s}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-item[open] .faq-icon::before{background:var(--purple)}
.faq-body{padding:0 4px 26px;font-size:15.5px;color:var(--muted);line-height:1.9;max-width:74ch}
@media (max-width:1023px){.faq-wrap{grid-template-columns:1fr;gap:26px}.faq-sticky{position:static}}

/* ---------- cta ---------- */
.cta-band{background:var(--graphite);color:#F6F3EC;border-radius:var(--r-xl);padding:64px 56px;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-60px;bottom:-70px;width:240px;height:240px;border:1px solid rgba(200,241,53,.35);border-radius:34px;transform:rotate(14deg)}
.cta-band h2{font-size:clamp(26px,3.4vw,42px);font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--lime);position:relative;z-index:2}
.cta-band p{margin-top:16px;font-size:16px;color:#B9BBC2;max-width:58ch;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;position:relative;z-index:2}
@media (max-width:767px){.cta-band{padding:40px 24px;border-radius:var(--r-lg)}.cta-actions .btn{width:100%}}

/* ---------- footer ---------- */
.site-footer{background:var(--graphite);color:#C9CACF;margin-top:96px}
.site-footer .shell{padding-top:64px;padding-bottom:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand-mark{width:28px;height:28px;border-radius:9px;background:var(--lime);display:grid;place-items:center;flex:none}
.footer-brand-mark span{display:block;width:11px;height:11px;border-radius:3px;background:var(--graphite)}
.footer-title{font-size:13px;font-weight:800;letter-spacing:.08em;color:#F6F3EC;margin-bottom:16px}
.footer-list li{font-size:14.5px;color:#8B8D94;margin-bottom:11px;line-height:1.6}
.footer-list a{transition:color .2s,border-color .2s;border-bottom:1px solid transparent}
.footer-list a:hover{color:var(--lime);border-color:var(--lime)}
@media (max-width:1023px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
    --lime:#C8F135;
    --lime-deep:#A8CE1F;
    --violet:#6A4CFF;
    --orange:#FF5C39;
    --paper:#F6F3EC;
    --ink:#0F1013;
    --ink-2:#17181D;
    --text:#15161A;
    --muted:#6B6F76;
    --muted-2:#8B8D94;
    --line:#E5E0D6;
    --line-dark:#24262C;
    --r-lg:20px;
    --r-sm:14px;
    --r-pill:999px;
    --shadow-soft:0 18px 50px rgba(15,16,19,.08);
    --shadow-mid:0 22px 60px rgba(15,16,19,.12);
    --shadow-dark:0 24px 80px rgba(0,0,0,.35);
    --sans:"MiSans","HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    --narrow:"Barlow Condensed","Oswald","Arial Narrow",var(--sans);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:var(--sans);
    font-size:17px;
    line-height:1.8;
    letter-spacing:.01em;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border-style:none}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
  ul{padding:0;list-style:none}
  input,textarea,select{font-family:inherit;font-size:16px}
  :focus-visible{outline:2px solid var(--violet);outline-offset:3px;border-radius:4px}

  .shell{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
  .section{padding:96px 0}
  .section-tight{padding:72px 0}
  .band{background:#fff}
  .band-dark{background:var(--ink);color:#F2F0EA}

  /* ============ 头部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(246,243,236,.92);
    backdrop-filter:saturate(180%) blur(12px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    display:grid;
    grid-template-columns:52% 48%;
    align-items:center;
    height:66px;
  }
  .header-left{display:flex;align-items:center;gap:26px;min-width:0}
  .logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .logo-mark{
    width:26px;height:26px;border-radius:8px;background:var(--ink);
    display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .logo-mark i{width:11px;height:11px;background:var(--lime);display:block;border-radius:2px;transform:rotate(45deg)}
  .logo-text{font-weight:800;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:4px;min-width:0}
  .nav-links a{
    display:inline-block;padding:8px 12px;border-radius:var(--r-pill);
    font-size:15px;font-weight:600;color:#4A4D53;
    transition:color .22s ease,background-color .22s ease;
    white-space:nowrap;
  }
  .nav-links a:hover{color:var(--text);background:rgba(15,16,19,.06)}
  .nav-links a.active{color:var(--ink);background:var(--lime);font-weight:700}
  .header-right{
    display:flex;align-items:center;justify-content:flex-end;gap:14px;
    padding-left:24px;border-left:1px solid var(--line);height:32px;
  }
  .search-box{display:flex;align-items:center;gap:8px;height:38px;width:200px;padding:0 14px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
    transition:border-color .22s ease,box-shadow .22s ease;}
  .search-box svg{flex-shrink:0;opacity:.5}
  .search-box input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--text)}
  .search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 3px rgba(200,241,53,.35)}
  .menu-toggle{
    display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);
    background:#fff;align-items:center;justify-content:center;cursor:pointer;
  }
  .menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
  .menu-toggle span::before,.menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  }
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}
  .drawer{
    position:fixed;inset:66px 0 0 0;background:var(--ink);z-index:55;
    padding:28px 24px 40px;display:none;flex-direction:column;
    opacity:0;transform:translateY(-8px);transition:opacity .28s ease,transform .28s ease;
  }
  .drawer.open{display:flex;opacity:1;transform:translateY(0)}
  .drawer a.drawer-link{
    display:block;padding:16px 0;font-size:19px;font-weight:700;color:#F2F0EA;
    border-bottom:1px solid var(--line-dark);
  }
  .drawer a.drawer-link.active{color:var(--lime)}
  .drawer-foot{margin-top:auto;padding-top:28px;display:flex;flex-direction:column;gap:14px}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:50px;padding:0 26px;border-radius:var(--r-pill);
    font-size:15.5px;font-weight:700;border:1px solid transparent;cursor:pointer;
    transition:transform .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
    white-space:nowrap;
  }
  .btn-primary{background:var(--lime);color:var(--ink);box-shadow:0 10px 26px rgba(200,241,53,.35)}
  .btn-primary:hover{background:var(--ink);color:var(--lime);transform:translateY(-2px)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:rgba(15,16,19,.28);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
  .btn-ghost-light{background:transparent;border-color:rgba(246,243,236,.4);color:#F6F3EC}
  .btn-ghost-light:hover{background:#F6F3EC;color:var(--ink);transform:translateY(-2px)}
  .btn-sm{height:40px;padding:0 18px;font-size:14.5px}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;
    color:var(--ink);border-bottom:1px solid rgba(15,16,19,.25);padding-bottom:2px;
    transition:border-color .22s ease,color .22s ease;
  }
  .text-link:hover{border-color:var(--lime-deep);color:#4C5A0B}
  .text-link-light{color:var(--lime);border-color:rgba(200,241,53,.4)}
  .text-link-light:hover{color:#fff;border-color:#fff}

  /* ============ 标签 / 徽章 ============ */
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;
    border-radius:var(--r-pill);font-size:13px;font-weight:700;letter-spacing:.02em;
  }
  .badge-lime{background:var(--lime);color:var(--ink)}
  .badge-violet{background:rgba(106,76,255,.12);color:#4A32D6}
  .badge-orange{background:rgba(255,92,57,.13);color:#C93A1B}
  .badge-outline{background:transparent;border:1px solid rgba(246,243,236,.35);color:#EDEAE2}

  /* ============ 区块标题 ============ */
  .section-head{
    display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
    padding-bottom:34px;margin-bottom:44px;border-bottom:1px solid var(--line);
  }
  .section-head .eyebrow{
    display:block;font-family:var(--narrow);font-size:14px;font-weight:700;
    letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:12px;
  }
  .section-head h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
  .section-head p{color:var(--muted);font-size:16px;margin-top:12px;max-width:60ch}
  .dark-section-head{border-bottom-color:var(--line-dark)}
  .dark-section-head h2{color:#F4F2EC}
  .dark-section-head p,.dark-section-head .eyebrow{color:#9A9D A4}
  .dark-section-head p{color:#9A9DA4}
  .dark-section-head .eyebrow{color:#8B8D94}

  /* ============ Hero ============ */
  .hero{position:relative;overflow:hidden;background:var(--ink);color:#F6F3EC}
  .hero-bg{
    position:absolute;inset:0;background-size:cover;background-position:center 32%;
    opacity:.42;transform:scale(1.02);
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(100deg,rgba(15,16,19,.94) 0%,rgba(15,16,19,.82) 48%,rgba(15,16,19,.6) 100%);
  }
  .hero-inner{position:relative;z-index:2;padding:120px 0 84px;max-width:900px}
  .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#9C9FA6;margin-bottom:22px}
  .breadcrumb a:hover{color:var(--lime)}
  .breadcrumb .current{color:#E9E6DE}
  .hero h1{
    font-size:clamp(36px,4.9vw,66px);font-weight:800;letter-spacing:-.03em;line-height:1.1;
    margin:18px 0 0;
  }
  .hero h1 em{font-style:normal;color:var(--lime)}
  .hero-sub{margin-top:22px;font-size:17.5px;line-height:1.85;color:#C7C5BE;max-width:64ch}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
  .hero-lines{position:absolute;right:-40px;top:80px;width:320px;height:320px;z-index:1;opacity:.5;pointer-events:none}
  .hero-lines span{position:absolute;border:1px solid rgba(200,241,53,.45);border-radius:18px}
  .hero-lines span:nth-child(1){inset:0}
  .hero-lines span:nth-child(2){inset:44px}
  .hero-lines span:nth-child(3){inset:88px;border-color:rgba(106,76,255,.5)}

  /* ============ 指标条 ============ */
  .metric-band{background:var(--ink);border-top:1px solid var(--line-dark);color:#F2F0EA}
  .metric-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-dark);
  }
  .metric-item{background:var(--ink);padding:30px 26px}
  .metric-item .num{
    font-family:var(--narrow);font-size:clamp(32px,3.6vw,46px);font-weight:700;
    letter-spacing:-.02em;line-height:1;color:var(--lime);
  }
  .metric-item .num small{font-size:.5em;margin-left:2px;color:#9FA39C}
  .metric-item .label{margin-top:12px;font-size:14px;color:#A9ACB2;line-height:1.6}

  /* ============ 案例墙 ============ */
  .case-hero-card{
    display:grid;grid-template-columns:1.02fr .98fr;gap:0;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    overflow:hidden;box-shadow:var(--shadow-soft);
    transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
  }
  .case-hero-card:hover{border-color:var(--lime);box-shadow:var(--shadow-mid);transform:translateY(-4px)}
  .case-hero-media{position:relative;min-height:400px;overflow:hidden}
  .case-hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 30%;transition:transform .5s ease}
  .case-hero-card:hover .case-hero-media img{transform:scale(1.03)}
  .case-hero-media .tag-float{
    position:absolute;left:22px;top:22px;background:rgba(15,16,19,.78);color:#F6F3EC;
    font-size:13px;font-weight:700;padding:7px 14px;border-radius:var(--r-pill);backdrop-filter:blur(6px);
  }
  .case-hero-body{padding:40px 40px 36px;display:flex;flex-direction:column}
  .case-hero-body h3{font-size:clamp(22px,2.4vw,29px);font-weight:800;line-height:1.35;letter-spacing:-.02em;margin-top:16px}
  .case-hero-body p{margin-top:16px;color:var(--muted);font-size:16px;line-height:1.85}
  .case-hero-stats{display:flex;gap:34px;margin-top:26px;flex-wrap:wrap}
  .case-hero-stats .st .v{font-family:var(--narrow);font-size:30px;font-weight:700;color:var(--ink);line-height:1}
  .case-hero-stats .st .k{font-size:13px;color:var(--muted);margin-top:8px}
  .case-hero-body .text-link{margin-top:auto;padding-top:26px;align-self:flex-start}

  .case-mid-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:24px}
  .case-mid-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    padding:30px 30px 26px;display:flex;flex-direction:column;
    transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
  }
  .case-mid-card:hover{border-color:var(--lime);box-shadow:var(--shadow-soft);transform:translateY(-4px)}
  .case-mid-card h3{font-size:21px;font-weight:800;line-height:1.4;margin-top:14px;letter-spacing:-.01em}
  .case-mid-card p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.8}
  .case-mid-metrics{display:flex;gap:26px;margin-top:22px;flex-wrap:wrap}
  .case-mid-metrics .st .v{font-family:var(--narrow);font-size:24px;font-weight:700;line-height:1;color:#4C5A0B}
  .case-mid-metrics .st .k{font-size:12.5px;color:var(--muted);margin-top:7px}
  .case-mid-card .text-link{margin-top:24px;align-self:flex-start}

  .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px}
  .quote-card{
    background:var(--ink);color:#F2F0EA;border-radius:var(--r-sm);padding:30px 28px 26px;
    border:1px solid var(--line-dark);
    transition:transform .28s ease,border-color .28s ease;
  }
  .quote-card:hover{transform:translateY(-4px);border-color:var(--lime)}
  .quote-card .q{font-size:17px;line-height:1.8;font-weight:600;color:#F4F2EC}
  .quote-card .q::before{content:"「";color:var(--lime)}
  .quote-card .q::after{content:"」";color:var(--lime)}
  .quote-card .who{margin-top:22px;padding-top:18px;border-top:1px solid var(--line-dark);font-size:13.5px;color:#9A9DA4}
  .quote-card .who strong{color:var(--lime);font-weight:700;display:block;font-size:14.5px;margin-bottom:4px}

  /* ============ 深色引用带 ============ */
  .pull-band{background:var(--ink);color:#F4F2EC;position:relative;overflow:hidden}
  .pull-band::before{
    content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(200,241,53,.18),transparent 65%);
  }
  .pull-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}
  .pull-quote{font-size:clamp(22px,2.6vw,34px);font-weight:800;line-height:1.5;letter-spacing:-.02em}
  .pull-quote em{font-style:normal;color:var(--lime)}
  .pull-source{margin-top:26px;font-size:14.5px;color:#9A9DA4}
  .pull-side{display:flex;flex-direction:column;gap:20px}
  .pull-side .row{display:flex;flex-direction:column;gap:6px;padding-bottom:18px;border-bottom:1px solid var(--line-dark)}
  .pull-side .row:last-child{border-bottom:0;padding-bottom:0}
  .pull-side .v{font-family:var(--narrow);font-size:30px;font-weight:700;color:var(--lime);line-height:1}
  .pull-side .k{font-size:13.5px;color:#9A9DA4}

  /* ============ 评测卡网格 ============ */
  .review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .review-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
    display:flex;flex-direction:column;
    transition:border-color .28s ease,box-shadow .28s ease,transform .28s ease;
  }
  .review-card:hover{border-color:var(--lime);box-shadow:var(--shadow-soft);transform:translateY(-4px)}
  .review-card .cover{aspect-ratio:16/10;overflow:hidden;position:relative;background:var(--ink)}
  .review-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
  .review-card:hover .cover img{transform:scale(1.03)}
  .review-card .body{padding:26px 26px 24px;display:flex;flex-direction:column;flex:1}
  .review-card h3{font-size:19.5px;font-weight:800;line-height:1.45;margin-top:14px;letter-spacing:-.01em}
  .review-card p{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.8}
  .meta-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px;
    padding-top:18px;border-top:1px solid var(--line);font-size:13.5px;color:var(--muted)}
  .meta-row a{font-weight:700;color:var(--ink);border-bottom:1px solid rgba(15,16,19,.2)}
  .meta-row a:hover{border-color:var(--lime-deep)}

  /* ============ 维度 / 方法 ============ */
  .dim-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
  .dim-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:26px 22px;
    transition:border-color .28s ease,transform .28s ease,box-shadow .28s ease;
  }
  .dim-card:hover{border-color:var(--violet);transform:translateY(-4px);box-shadow:var(--shadow-soft)}
  .dim-card .idx{font-family:var(--narrow);font-size:15px;font-weight:700;color:var(--violet);letter-spacing:.1em}
  .dim-card h3{font-size:17.5px;font-weight:800;margin-top:12px}
  .dim-card p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.75}
  .method-strip{
    margin-top:36px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    padding:34px 36px;display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  }
  .method-strip .m .step{font-family:var(--narrow);font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--orange)}
  .method-strip .m h4{font-size:16.5px;font-weight:800;margin-top:10px}
  .method-strip .m p{margin-top:8px;font-size:14.5px;color:var(--muted);line-height:1.75}

  /* ============ FAQ ============ */
  .faq-layout{display:grid;grid-template-columns:36% 64%;gap:48px;align-items:start}
  .faq-sticky{position:sticky;top:104px}
  .faq-sticky h2{font-size:clamp(28px,3.2vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.25}
  .faq-sticky p{margin-top:16px;color:var(--muted);font-size:16px;line-height:1.85}
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
    display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
    padding:24px 4px;font-size:18px;font-weight:700;color:var(--text);line-height:1.55;
    transition:color .22s ease;
  }
  .faq-q:hover{color:#4C5A0B}
  .faq-icon{
    flex-shrink:0;width:26px;height:26px;position:relative;margin-top:3px;
    transition:transform .3s ease;
  }
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;background:var(--ink);border-radius:2px;
  }
  .faq-icon::before{left:0;top:12px;width:26px;height:2px}
  .faq-icon::after{left:12px;top:0;width:2px;height:26px}
  .faq-item.open .faq-icon{transform:rotate(45deg)}
  .faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--violet)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease}
  .faq-a p{padding:0 46px 26px 4px;color:var(--muted);font-size:16px;line-height:1.9}

  /* ============ CTA ============ */
  .cta-band{background:var(--ink);color:#F4F2EC;position:relative;overflow:hidden}
  .cta-band::after{
    content:"";position:absolute;left:-100px;bottom:-160px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle,rgba(106,76,255,.28),transparent 68%);
  }
  .cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:center}
  .cta-inner h2{font-size:clamp(28px,3.4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.02em;color:var(--lime)}
  .cta-inner p{margin-top:18px;color:#B9B7B0;font-size:16.5px;line-height:1.85;max-width:56ch}
  .cta-actions{display:flex;flex-direction:column;gap:16px;align-items:flex-start}

  /* ============ 页脚 ============ */
  .site-footer{background:var(--ink);color:#B9B7B0}
  .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:40px}
  .footer-brand-mark{
    width:26px;height:26px;border-radius:8px;background:var(--lime);
    display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .footer-brand-mark span{width:11px;height:11px;background:var(--ink);display:block;border-radius:2px;transform:rotate(45deg)}
  .footer-title{font-size:14px;font-weight:800;color:#F4F2EC;margin-bottom:18px;letter-spacing:.02em}
  .footer-list li{margin-bottom:11px;font-size:14.5px}
  .footer-list a{transition:color .22s ease,border-color .22s ease;border-bottom:1px solid transparent}
  .footer-list a:hover{color:var(--lime);border-bottom-color:var(--lime)}

  /* ============ 动效 ============ */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
  .reveal.in{opacity:1;transform:none}

  /* ============ 响应式 ============ */
  @media (max-width:1279px){
    .section{padding:80px 0}
    .header-left{gap:18px}
    .nav-links a{padding:8px 10px;font-size:14.5px}
    .search-box{width:170px}
    .dim-grid{grid-template-columns:repeat(3,1fr)}
    .method-strip{grid-template-columns:repeat(2,1fr);gap:24px}
  }
  @media (max-width:1023px){
    .header-inner{grid-template-columns:1fr auto}
    .header-right{border-left:0;padding-left:0;height:auto}
    .nav-links,.search-box{display:none}
    .menu-toggle{display:flex}
    .hero-inner{padding:96px 0 68px}
    .hero-lines{display:none}
    .case-hero-card{grid-template-columns:1fr}
    .case-hero-media{min-height:280px}
    .case-hero-body{padding:32px 28px 30px}
    .dim-grid{grid-template-columns:repeat(2,1fr)}
    .pull-inner,.cta-inner{grid-template-columns:1fr;gap:36px}
    .faq-layout{grid-template-columns:1fr;gap:32px}
    .faq-sticky{position:static}
    .footer-grid{grid-template-columns:repeat(2,1fr);gap:34px}
    .metric-grid{grid-template-columns:repeat(2,1fr)}
  }
  @media (max-width:767px){
    body{font-size:16px}
    .shell{padding:0 18px}
    .section{padding:56px 0}
    .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px;padding-bottom:24px}
    .hero-inner{padding:82px 0 56px}
    .hero h1{font-size:34px}
    .hero-actions{gap:10px}
    .hero-actions .btn{width:100%}
    .case-mid-grid,.review-grid,.quote-grid{grid-template-columns:1fr}
    .dim-grid{grid-template-columns:1fr}
    .method-strip{grid-template-columns:1fr;padding:26px 22px}
    .case-hero-media{min-height:220px}
    .metric-item{padding:24px 20px}
    .footer-grid{grid-template-columns:1fr}
    .faq-q{font-size:16.5px;padding:20px 0}
    .faq-a p{padding-right:8px}
    .cta-actions .btn{width:100%}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
  }

/* roulang page: category4 */
:root{
    --lime:#C8F135;
    --lime-soft:rgba(200,241,53,.26);
    --violet:#6A4CFF;
    --orange:#FF5C39;
    --paper:#F6F3EC;
    --paper-2:#FFFDF8;
    --ink:#15161A;
    --ink-2:#6B6F76;
    --ink-3:#8B8D94;
    --line:#E5E0D6;
    --graphite:#0F1013;
    --graphite-2:#171A1F;
    --r-lg:20px;
    --r-sm:14px;
    --r-xs:12px;
    --shadow-l:0 18px 50px rgba(15,16,19,.08);
    --shadow-d:0 24px 80px rgba(0,0,0,.35);
    --shell:1240px;
    --font-cn:"MiSans","HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--paper);color:var(--ink);
    font-family:var(--font-cn);font-size:16.5px;line-height:1.75;
    -webkit-font-smoothing:antialiased;overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button,input,textarea,select{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;line-height:1.18;letter-spacing:-.012em}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--violet);outline-offset:2px;border-radius:6px}
  .shell{max-width:var(--shell);margin:0 auto;padding:0 24px}
  .num-font{font-family:"Arial Narrow","Barlow Condensed",Impact,system-ui,sans-serif;font-weight:700;letter-spacing:.01em}

  /* ============ Header / Nav ============ */
  .site-header{
    position:sticky;top:0;z-index:80;background:rgba(246,243,236,.93);
    backdrop-filter:blur(14px);border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:66px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{position:relative;width:30px;height:30px;border-radius:9px;background:var(--graphite);display:inline-block;flex-shrink:0}
  .brand-mark > span{position:absolute;inset:8px;border:2px solid var(--lime);border-radius:4px}
  .brand-text{font-weight:800;font-size:16.5px;letter-spacing:-.01em;white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:4px}
  .nav-links a{
    padding:8px 14px;border-radius:999px;font-size:14.5px;font-weight:600;
    color:var(--ink-2);transition:color .22s ease,background-color .22s ease,transform .22s ease;
  }
  .nav-links a:hover{color:var(--ink);background:var(--lime-soft);transform:translateY(-1px)}
  .nav-links a.active{color:var(--ink);background:var(--lime)}
  .header-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
  .header-divider{width:1px;height:26px;background:var(--line)}
  .search-box{
    display:flex;align-items:center;gap:8px;height:40px;width:210px;
    padding:0 14px;border:1px solid var(--line);border-radius:999px;
    background:var(--paper-2);transition:border-color .22s ease,box-shadow .22s ease;
  }
  .search-box:focus-within{border-color:var(--lime);box-shadow:0 0 0 4px rgba(200,241,53,.25)}
  .search-box svg{width:16px;height:16px;color:var(--ink-3);flex-shrink:0}
  .search-box input{
    border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink);
  }
  .search-box input::placeholder{color:var(--ink-3)}
  .menu-toggle{
    display:none;align-items:center;justify-content:center;width:42px;height:42px;
    border:1px solid var(--line);border-radius:12px;background:var(--paper-2);cursor:pointer;transition:.22s;
  }
  .menu-toggle:hover{border-color:var(--lime);background:var(--lime-soft)}
  .menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
  .menu-toggle span::before,.menu-toggle span::after{
    content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  }
  .menu-toggle span::before{top:-6px}
  .menu-toggle span::after{top:6px}

  .mobile-drawer{
    display:none;background:var(--graphite);color:var(--paper);
    padding:22px 24px 30px;border-top:1px solid #24262C;
  }
  .mobile-drawer.open{display:block}
  .mobile-drawer a.m-link{
    display:block;padding:13px 4px;font-size:16.5px;font-weight:700;
    color:#D9DADF;border-bottom:1px solid #24262C;transition:color .2s ease;
  }
  .mobile-drawer a.m-link:hover{color:var(--lime)}
  .mobile-drawer a.m-link.active{color:var(--lime)}
  .m-search{
    display:flex;align-items:center;gap:8px;margin-top:20px;height:46px;padding:0 16px;
    border:1px solid #2C2F36;border-radius:12px;background:#15171C;
  }
  .m-search input{background:transparent;border:0;outline:none;width:100%;color:var(--paper);font-size:14.5px}
  .m-search input::placeholder{color:#6E7178}

  /* ============ Buttons ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:999px;font-weight:700;font-size:14.5px;
    border:1px solid transparent;cursor:pointer;
    transition:background-color .22s ease,color .22s ease,transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .btn-primary{background:var(--lime);color:var(--ink)}
  .btn-primary:hover{background:var(--graphite);color:var(--lime);transform:translateY(-2px);box-shadow:0 14px 30px rgba(15,16,19,.22)}
  .btn-primary:active{transform:translateY(0)}
  .btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
  .btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-2px)}
  .btn-ghost-dark{background:transparent;border-color:rgba(246,243,236,.4);color:var(--paper)}
  .btn-ghost-dark:hover{background:var(--paper);color:var(--ink);transform:translateY(-2px)}
  .btn-block{width:100%}
  .btn-sm{padding:9px 18px;font-size:14px}

  /* ============ Hero ============ */
  .hero{border-bottom:1px solid var(--line);background:var(--paper)}
  .hero-grid{display:grid;grid-template-columns:52% 48%;align-items:stretch}
  .hero-left{padding:64px 56px 64px 24px;display:flex;flex-direction:column;justify-content:center;max-width:calc(var(--shell)/2 + 60px);margin-left:auto}
  .hero-right{
    position:relative;overflow:hidden;min-height:460px;border-left:1px solid var(--line);
    background-image:url(/assets/images/backpic/back-1.png);
    background-size:cover;background-position:center;
  }
  .hero-right::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(140deg,rgba(15,16,19,.88),rgba(15,16,19,.6) 55%,rgba(15,16,19,.9));
  }
  .hero-frame{
    position:absolute;right:44px;bottom:44px;width:210px;height:150px;
    border:2px solid var(--lime);border-radius:18px;z-index:2;
  }
  .hero-frame::before{
    content:"";position:absolute;left:-22px;top:-22px;width:74px;height:74px;
    border:2px solid rgba(200,241,53,.5);border-radius:14px;
  }
  .hero-stat{
    position:absolute;left:40px;top:44px;z-index:2;color:var(--paper);
  }
  .hero-stat .label{font-size:12.5px;letter-spacing:.22em;color:rgba(246,243,236,.62)}
  .hero-stat .value{font-size:40px;line-height:1.1}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border-radius:999px;
    background:rgba(200,241,53,.34);font-size:13px;font-weight:700;color:#3C4A0A;margin-bottom:22px;
  }
  .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--graphite);display:inline-block}
  .hero-title{font-size:clamp(36px,4.4vw,60px);font-weight:800;letter-spacing:-.025em}
  .hero-title em{font-style:normal;position:relative;white-space:nowrap}
  .hero-title em::after{
    content:"";position:absolute;left:0;right:0;bottom:6px;height:12px;
    background:var(--lime);z-index:-1;border-radius:4px;
  }
  .hero-sub{margin-top:22px;font-size:17px;color:var(--ink-2);max-width:44ch}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
  .hero-meta{display:flex;flex-wrap:wrap;gap:26px;margin-top:38px;padding-top:24px;border-top:1px solid var(--line)}
  .hero-meta div span{display:block}
  .hero-meta .m-k{font-size:12.5px;letter-spacing:.16em;color:var(--ink-3);text-transform:uppercase}
  .hero-meta .m-v{font-size:20px;font-weight:700;margin-top:4px}

  /* ============ Section base ============ */
  .section{padding:96px 0}
  .section-dark{background:var(--graphite);color:var(--paper)}
  .section-alt{background:var(--paper-2)}
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:46px}
  .sec-title{font-size:clamp(26px,2.9vw,40px);font-weight:800}
  .sec-desc{margin-top:12px;font-size:16px;color:var(--ink-2);max-width:62ch}
  .sec-link{font-size:14.5px;font-weight:700;color:var(--ink);border-bottom:2px solid var(--lime);padding-bottom:3px;transition:.22s}
  .sec-link:hover{color:var(--violet);border-color:var(--violet)}
  .on-dark .sec-desc{color:rgba(246,243,236,.7)}
  .on-dark .sec-link{color:var(--paper)}
  .on-dark .sec-link:hover{color:var(--lime)}

  /* ============ Value strip ============ */
  .strip{background:var(--graphite);color:var(--paper);padding:34px 0}
  .strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
  .strip-item{border-left:2px solid var(--lime);padding-left:18px}
  .strip-item .v{font-size:28px;line-height:1.15;color:var(--paper)}
  .strip-item .k{font-size:13.5px;color:rgba(246,243,236,.66);margin-top:6px}

  /* ============ Pricing cards ============ */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
  .price-card{
    background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r-lg);
    padding:28px;display:flex;flex-direction:column;gap:20px;
    transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
  }
  .price-card:hover{transform:translateY(-4px);border-color:var(--lime);box-shadow:var(--shadow-l)}
  .price-card.featured{
    border:2px solid var(--lime);box-shadow:var(--shadow-l);transform:scale(1.03);
    background:linear-gradient(180deg,rgba(200,241,53,.14),rgba(255,253,248,1) 42%);
  }
  .price-card.featured:hover{transform:scale(1.03) translateY(-4px)}
  .badge{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
    font-size:12.5px;font-weight:700;letter-spacing:.02em;
  }
  .badge-lime{background:var(--lime);color:var(--ink)}
  .badge-violet{background:rgba(106,76,255,.14);color:#3E2BB8}
  .badge-orange{background:rgba(255,92,57,.14);color:#B8321A}
  .badge-ghost{background:rgba(15,16,19,.07);color:var(--ink-2)}
  .price-name{font-size:22px;font-weight:800;margin-top:14px}
  .price-for{font-size:14.5px;color:var(--ink-2);margin-top:8px}
  .price-amount{display:flex;align-items:baseline;gap:4px}
  .price-amount .currency{font-size:20px;font-weight:700}
  .price-amount .num{font-size:46px;line-height:1}
  .price-amount .unit{font-size:14.5px;color:var(--ink-2);margin-left:4px}
  .price-note{font-size:13.5px;color:var(--ink-3);padding-bottom:20px;border-bottom:1px dashed var(--line)}
  .price-list{display:flex;flex-direction:column;gap:11px;flex:1}
  .price-list li{display:flex;gap:10px;font-size:14.8px;color:#2B2D33;line-height:1.6}
  .price-list li::before{
    content:"";flex-shrink:0;width:16px;height:16px;margin-top:5px;border-radius:5px;
    background:var(--lime);box-shadow:inset 0 0 0 4px var(--paper-2);
  }
  .price-list li.off{color:var(--ink-3);text-decoration:line-through;text-decoration-color:rgba(139,141,148,.5)}
  .price-list li.off::before{background:#DDD8CC;box-shadow:inset 0 0 0 4px var(--paper-2)}

  /* ============ Compare table ============ */
  .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--paper-2)}
  table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:14.8px}
  table.compare thead th{
    background:var(--graphite);color:var(--paper);text-align:left;
    padding:18px 22px;font-weight:700;font-size:14.5px;letter-spacing:.02em;white-space:nowrap;
  }
  table.compare thead th.hl{color:var(--lime)}
  table.compare tbody td{padding:16px 22px;border-top:1px solid var(--line);color:#2B2D33}
  table.compare tbody tr:nth-child(even){background:rgba(229,224,214,.22)}
  table.compare tbody td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
  table.compare tbody td.hl{background:rgba(200,241,53,.16);font-weight:700}
  .yes{color:#2E7D32;font-weight:700}
  .no{color:var(--ink-3)}

  /* ============ Steps ============ */
  .steps-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
  .steps{display:flex;flex-direction:column;gap:0}
  .step{display:flex;gap:22px;padding:24px 0;border-top:1px solid var(--line)}
  .step:last-child{border-bottom:1px solid var(--line)}
  .step .idx{font-size:26px;color:var(--violet);line-height:1.2;min-width:56px}
  .step h3{font-size:20px;font-weight:800}
  .step p{margin-top:8px;font-size:15px;color:var(--ink-2)}
  .steps-media{position:relative}
  .steps-media img{border-radius:var(--r-lg);width:100%;height:440px;object-fit:cover;box-shadow:var(--shadow-l)}
  .steps-media .tag-card{
    position:absolute;left:-18px;bottom:26px;background:var(--graphite);color:var(--paper);
    border-radius:var(--r-sm);padding:18px 22px;box-shadow:var(--shadow-d);min-width:210px;
  }
  .steps-media .tag-card .v{font-size:26px;color:var(--lime)}
  .steps-media .tag-card .k{font-size:13.5px;color:rgba(246,243,236,.66);margin-top:4px}

  /* ============ FAQ ============ */
  .faq-layout{display:grid;grid-template-columns:1fr 1.6fr;gap:56px;align-items:start}
  .faq-sticky{position:sticky;top:96px}
  .faq-list{border-top:1px solid var(--line)}
  details.faq{
    border-bottom:1px solid var(--line);
  }
  details.faq summary{
    list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
    gap:20px;padding:24px 0;font-size:18px;font-weight:700;transition:color .2s ease;
  }
  details.faq summary::-webkit-details-marker{display:none}
  details.faq summary:hover{color:var(--violet)}
  details.faq summary::after{
    content:"+";flex-shrink:0;font-size:26px;line-height:1;color:var(--violet);
    transition:transform .28s ease;font-weight:400;
  }
  details.faq[open] summary::after{transform:rotate(45deg)}
  details.faq .faq-body{padding:0 44px 26px 0;color:var(--ink-2);font-size:15.5px;line-height:1.85}

  /* ============ Consult form ============ */
  .consult-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
  .form-card{
    background:var(--paper-2);border:1px solid #26282F;border-radius:var(--r-lg);
    padding:32px;color:var(--ink);
  }
  .field{margin-bottom:20px}
  .field label{display:block;font-size:14px;font-weight:700;margin-bottom:9px;color:var(--paper)}
  .field input,.field textarea{
    width:100%;border:1px solid #2C2F36;border-radius:var(--r-xs);
    background:#15171C;color:var(--paper);padding:0 16px;height:48px;
    transition:border-color .22s ease,box-shadow .22s ease;outline:none;
  }
  .field textarea{height:118px;padding:13px 16px;resize:vertical;line-height:1.7}
  .field input::placeholder,.field textarea::placeholder{color:#6E7178}
  .field input:focus,.field textarea:focus{border-color:var(--lime);box-shadow:0 0 0 4px rgba(200,241,53,.18)}
  .field .hint{font-size:12.5px;color:#7C7F86;margin-top:7px}
  .form-tip{font-size:13px;color:#7C7F86;margin-top:14px}
  .consult-points{display:flex;flex-direction:column;gap:18px;margin-top:30px}
  .consult-points li{display:flex;gap:14px;align-items:flex-start;font-size:15.5px;color:rgba(246,243,236,.82)}
  .consult-points li b{color:var(--paper)}
  .dot-lime{flex-shrink:0;width:10px;height:10px;border-radius:3px;background:var(--lime);margin-top:9px}

  /* ============ CTA band ============ */
  .cta-band{background:var(--graphite);color:var(--paper);padding:80px 0}
  .cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
  .cta-inner h2{font-size:clamp(26px,3.2vw,42px);font-weight:800;color:var(--lime);max-width:20ch}
  .cta-inner p{margin-top:14px;color:rgba(246,243,236,.72);max-width:46ch}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
  .link-underline{
    font-size:14.5px;font-weight:700;color:var(--paper);
    border-bottom:2px solid rgba(200,241,53,.6);padding-bottom:2px;transition:.22s;
  }
  .link-underline:hover{color:var(--lime);border-color:var(--lime)}

  /* ============ Footer ============ */
  .site-footer{background:var(--graphite);color:#B9BBC2;border-top:1px solid #22252B}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px}
  .footer-brand-mark{position:relative;width:30px;height:30px;border-radius:9px;background:#1B1E24;display:inline-block;flex-shrink:0}
  .footer-brand-mark > span{position:absolute;inset:8px;border:2px solid var(--lime);border-radius:4px}
  .footer-title{color:#FFFFFF;font-weight:700;font-size:14px;letter-spacing:.04em;margin-bottom:16px}
  .footer-list li{font-size:14.5px;margin-bottom:10px;color:#8B8D94}
  .footer-list li a{transition:color .2s ease,border-color .2s ease;border-bottom:1px solid transparent}
  .footer-list li a:hover{color:var(--lime);border-color:var(--lime)}

  /* ============ Reveal animation ============ */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .3s ease,transform .3s ease}
  .reveal.in-view{opacity:1;transform:none}

  /* ============ Responsive ============ */
  @media (max-width:1279px){
    .shell{padding:0 20px}
    .hero-left{padding:56px 40px 56px 20px}
    .section{padding:80px 0}
    .faq-layout,.steps-layout,.consult-grid{gap:40px}
  }
  @media (max-width:1023px){
    .nav-links,.search-box{display:none}
    .menu-toggle{display:inline-flex}
    .header-divider{display:none}
    .hero-grid{grid-template-columns:1fr}
    .hero-left{max-width:none;margin:0;padding:48px 20px 44px}
    .hero-right{min-height:300px;border-left:0;border-top:1px solid var(--line)}
    .hero-frame{right:26px;bottom:26px;width:150px;height:110px}
    .hero-stat{left:26px;top:28px}
    .hero-stat .value{font-size:32px}
    .strip-grid{grid-template-columns:repeat(2,1fr);gap:22px}
    .price-grid{grid-template-columns:1fr;gap:20px}
    .price-card.featured{transform:none}
    .price-card.featured:hover{transform:translateY(-4px)}
    .steps-layout{grid-template-columns:1fr;gap:36px}
    .steps-media img{height:320px}
    .steps-media .tag-card{left:14px;bottom:14px}
    .faq-layout{grid-template-columns:1fr;gap:28px}
    .faq-sticky{position:static}
    .consult-grid{grid-template-columns:1fr;gap:34px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  }
  @media (max-width:767px){
    body{font-size:16px}
    .section{padding:56px 0}
    .brand-text{font-size:15px}
    .hero-title{font-size:clamp(30px,8.5vw,40px)}
    .hero-sub{font-size:15.5px}
    .hero-actions .btn{width:100%}
    .hero-meta{gap:18px}
    .hero-meta .m-v{font-size:18px}
    .sec-head{margin-bottom:30px}
    .price-card{padding:22px}
    .price-amount .num{font-size:40px}
    .step{gap:16px;padding:20px 0}
    .step .idx{font-size:20px;min-width:42px}
    .form-card{padding:22px}
    .cta-inner h2{max-width:none}
    .cta-actions{width:100%}
    .cta-actions .btn{width:100%}
    table.compare thead th,table.compare tbody td{padding:14px 16px}
  }
  @media (max-width:520px){
    .shell{padding:0 16px}
    .strip-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .hero-frame{width:112px;height:84px}
    details.faq summary{font-size:16.5px;padding:20px 0}
    details.faq .faq-body{padding-right:12px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important}
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none}
  }