/* roulang page: index */
:root {
    --ink: #0C1412;
    --accent: #B8F03C;
    --clay: #E8622C;
    --paper: #F7F6F2;
    --white: #FFFFFF;
    --line: #E2E0D8;
    --body: #2A2E2C;
    --muted: #6E736F;
    --radius-card: 18px;
    --radius-img: 14px;
    --shadow-1: 0 1px 2px rgba(12, 20, 18, .06);
    --shadow-2: 0 12px 28px -12px rgba(12, 20, 18, .22);
    --ease: cubic-bezier(.2, .7, .3, 1);
  }
  *, *::before, *::after { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--paper);
    color: var(--body);
    font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
  input { font: inherit; }
  h1, h2, h3, h4 { color: var(--ink); margin: 0; line-height: 1.25; }
  h1 { font-size: clamp(30px, 4.6vw, 56px); font-weight: 900; letter-spacing: -.02em; }
  h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 800; letter-spacing: -.015em; }
  h3 { font-size: clamp(20px, 2vw, 22px); font-weight: 700; }
  p { margin: 0; }
  .num { font-variant-numeric: tabular-nums; }
  .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
  .section { padding: 96px 0; }
  .section-tight { padding: 72px 0; }
  .eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .08em;
    color: var(--muted);
    text-transform: uppercase;
  }
  .lead { color: var(--muted); font-size: 16px; line-height: 1.8; }
  .divider { height: 1px; background: var(--line); border: 0; margin: 0; }

  /* 导航 */
  .site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 60;
    transition: background-color 240ms var(--ease), box-shadow 240ms var(--ease), border-color 240ms var(--ease);
    border-bottom: 1px solid transparent;
  }
  .site-header.at-top { background: transparent; }
  .site-header.scrolled {
    background: rgba(247, 246, 242, .96);
    border-bottom-color: var(--line);
    box-shadow: 0 6px 20px -16px rgba(12, 20, 18, .35);
    backdrop-filter: saturate(150%) blur(6px);
  }
  .nav-brandrow {
    height: 64px;
    display: flex;
    align-items: center;
    gap: 18px;
    transition: height 240ms var(--ease);
  }
  .site-header.scrolled .nav-brandrow { height: 56px; }
  .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand-mark {
    width: 34px; height: 34px;
    border-radius: 10px;
    background: var(--ink);
    display: grid; place-items: center;
    position: relative;
    overflow: hidden;
  }
  .brand-mark::after {
    content: "";
    position: absolute;
    left: 6px; right: 6px; bottom: 8px;
    height: 3px; border-radius: 2px;
    background: var(--accent);
  }
  .brand-mark::before {
    content: "";
    position: absolute;
    width: 12px; height: 12px;
    border-radius: 50%;
    border: 2px solid #F7F6F2;
    top: 7px; left: 11px;
  }
  .brand-text { font-weight: 900; font-size: 17px; color: var(--ink); letter-spacing: -.01em; white-space: nowrap; }
  .at-top .brand-text { color: #fff; }
  .at-top .nav-link, .at-top .nav-icon-btn { color: rgba(255,255,255,.86); }
  .at-top .nav-link:hover { color: #fff; }
  .nav-main { display: flex; align-items: center; gap: 6px; margin-left: auto; }
  .nav-icon-btn {
    display: inline-flex; align-items: center; gap: 7px;
    height: 38px; padding: 0 14px;
    border-radius: 999px;
    font-size: 14px; font-weight: 600;
    color: var(--body);
    transition: background-color 200ms var(--ease), color 200ms var(--ease);
  }
  .nav-icon-btn:hover { background: rgba(12, 20, 18, .06); }
  .at-top .nav-icon-btn:hover { background: rgba(255,255,255,.14); }
  .chip-trend {
    display: inline-flex; align-items: center; gap: 6px;
    height: 30px; padding: 0 12px;
    border-radius: 999px;
    font-size: 12.5px; font-weight: 600;
    border: 1px solid var(--line);
    color: var(--body);
    background: var(--white);
    transition: transform 200ms var(--ease), border-color 200ms var(--ease);
  }
  .chip-trend:hover { transform: translateY(-1px); border-color: var(--ink); }
  .at-top .chip-trend { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.34); color: #fff; }
  .btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 0 22px;
    border-radius: 999px;
    background: var(--ink); color: var(--paper);
    font-weight: 700; font-size: 15px;
    transition: background-color 200ms var(--ease), color 200ms var(--ease), transform 200ms var(--ease), box-shadow 200ms var(--ease);
  }
  .btn-primary:hover { background: var(--accent); color: var(--ink); transform: translateY(-1px); box-shadow: var(--shadow-2); }
  .btn-primary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .btn-ghost-light {
    display: inline-flex; align-items: center; gap: 8px;
    min-height: 44px; padding: 0 20px;
    border-radius: 999px;
    border: 1.5px solid rgba(255,255,255,.55);
    color: #fff; font-weight: 600; font-size: 15px;
    transition: background-color 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease);
  }
  .btn-ghost-light:hover { background: rgba(255,255,255,.16); border-color: #fff; transform: translateY(-1px); }
  .btn-outline {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    min-height: 44px; padding: 0 20px;
    border-radius: 999px;
    border: 1.5px solid var(--ink);
    background: transparent; color: var(--ink);
    font-weight: 700; font-size: 15px;
    transition: background-color 200ms var(--ease), color 200ms var(--ease), transform 200ms var(--ease);
  }
  .btn-outline:hover { background: #EDEBE3; transform: translateY(-1px); }
  .btn-outline:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .btn-ghost-arrow {
    display: inline-flex; align-items: center; gap: 6px;
    font-weight: 700; font-size: 15px; color: var(--ink);
  }
  .btn-ghost-arrow span.arw { transition: transform 220ms var(--ease); }
  .btn-ghost-arrow:hover span.arw { transform: translateX(4px); }

  .nav-channelrow {
    height: 44px;
    display: flex; align-items: center; gap: 4px;
    transition: height 240ms var(--ease);
    overflow-x: auto;
    scrollbar-width: none;
  }
  .nav-channelrow::-webkit-scrollbar { display: none; }
  .site-header.scrolled .nav-channelrow { height: 40px; }
  .nav-link {
    position: relative;
    display: inline-flex; align-items: center;
    height: 100%;
    padding: 0 14px;
    font-size: 14.5px; font-weight: 600;
    color: var(--body);
    white-space: nowrap;
    transition: color 180ms var(--ease);
  }
  .nav-link::after {
    content: "";
    position: absolute; left: 14px; right: 14px; bottom: 6px;
    height: 2px; border-radius: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 220ms var(--ease);
  }
  .nav-link:hover { color: var(--ink); }
  .nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
  .nav-link.active { color: var(--ink); }
  .at-top .nav-link.active { color: #fff; }

  .search-panel {
    display: none;
    border-top: 1px solid var(--line);
    background: rgba(247, 246, 242, .98);
  }
  .search-panel.open { display: block; }
  .search-inner { display: flex; gap: 10px; padding: 14px 0; }
  .field {
    flex: 1;
    height: 48px;
    padding: 0 16px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--body);
    outline: none;
    transition: border-color 180ms var(--ease), box-shadow 180ms var(--ease);
  }
  .field::placeholder { color: #9AA09B; }
  .field:focus { border-color: var(--ink); box-shadow: 0 0 0 2px rgba(184, 240, 60, .85); }

  .hamburger {
    display: none;
    width: 42px; height: 42px;
    border-radius: 12px;
    border: 1px solid var(--line);
    align-items: center; justify-content: center;
  }
  .hamburger span { display: block; width: 18px; height: 2px; background: var(--ink); position: relative; }
  .hamburger span::before, .hamburger span::after {
    content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--ink);
  }
  .hamburger span::before { top: -6px; }
  .hamburger span::after { top: 6px; }
  .at-top .hamburger { border-color: rgba(255,255,255,.4); }
  .at-top .hamburger span, .at-top .hamburger span::before, .at-top .hamburger span::after { background: #fff; }

  .drawer-mask {
    position: fixed; inset: 0;
    background: rgba(12, 20, 18, .4);
    opacity: 0; visibility: hidden;
    transition: opacity 240ms var(--ease), visibility 240ms var(--ease);
    z-index: 70;
  }
  .drawer-mask.open { opacity: 1; visibility: visible; }
  .drawer {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(340px, 88vw);
    background: var(--white);
    z-index: 71;
    transform: translateX(102%);
    transition: transform 300ms var(--ease);
    padding: 22px 20px 30px;
    overflow-y: auto;
  }
  .drawer.open { transform: translateX(0); }
  .drawer-link {
    display: block;
    padding: 14px 4px;
    border-bottom: 1px solid var(--line);
    font-weight: 700; font-size: 16px; color: var(--ink);
  }
  .drawer-link.active { color: var(--clay); }

  /* Hero */
  .hero {
    position: relative;
    min-height: 640px;
    display: flex;
    align-items: center;
    padding: 150px 0 64px;
    background-image: linear-gradient(100deg, rgba(12,20,18,.90) 0%, rgba(12,20,18,.66) 52%, rgba(12,20,18,.38) 100%), url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
  }
  .hero-inner { display: grid; grid-template-columns: 7fr 5fr; gap: 40px; align-items: end; width: 100%; }
  .hero h1 { color: #fff; max-width: 15em; }
  .hero-sub { color: rgba(255,255,255,.86); font-size: clamp(15px, 1.4vw, 18px); max-width: 34em; margin-top: 18px; }
  .hero-tag {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: rgba(184, 240, 60, .16);
    border: 1px solid rgba(184, 240, 60, .5);
    color: var(--accent);
    font-size: 12.5px; font-weight: 700; letter-spacing: .04em;
    margin-bottom: 20px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
  .hero-side {
    border-left: 1px solid rgba(255,255,255,.22);
    padding-left: 26px;
    color: rgba(255,255,255,.82);
  }
  .hero-side-item { padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
  .hero-side-item:last-child { border-bottom: 0; }
  .hero-side-item .k { font-size: 12px; font-weight: 600; letter-spacing: .08em; color: rgba(255,255,255,.6); }
  .hero-side-item .v { font-size: 15px; font-weight: 700; color: #fff; margin-top: 4px; }

  .stat-strip {
    background: var(--white);
    border-bottom: 1px solid var(--line);
  }
  .stat-strip-inner { display: grid; grid-template-columns: repeat(3, 1fr); }
  .stat-item { padding: 26px 24px; border-right: 1px solid var(--line); }
  .stat-item:first-child { padding-left: 0; }
  .stat-item:last-child { border-right: 0; }
  .stat-item .label { font-size: 13px; font-weight: 600; color: var(--muted); letter-spacing: .04em; }
  .stat-item .value { font-size: 24px; font-weight: 900; color: var(--ink); margin-top: 6px; letter-spacing: -.01em; }

  /* 板块头 */
  .section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; }
  .section-head p { max-width: 46em; margin-top: 10px; }

  /* 玩法步骤 */
  .step-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .step-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 26px 22px 28px;
    box-shadow: var(--shadow-1);
    transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .step-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
  .step-num {
    font-size: 56px;
    font-weight: 900;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--line);
    letter-spacing: -.03em;
    margin-bottom: 18px;
  }
  .step-card h3 { font-size: 19px; margin-bottom: 8px; }
  .step-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }

  /* 奖励阶梯 */
  .reward-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
  }
  .reward-card {
    position: relative;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 26px 22px 24px;
    box-shadow: var(--shadow-1);
    overflow: hidden;
    transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .reward-card::before {
    content: "";
    position: absolute; left: 0; right: 0; top: 0; height: 4px;
    background: var(--ink);
  }
  .reward-card.lvl-top::before { background: var(--clay); }
  .reward-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
  .reward-lg { grid-column: span 3; }
  .reward-sm { grid-column: span 2; }
  .badge {
    display: inline-flex; align-items: center; gap: 6px;
    height: 26px; padding: 0 11px;
    border-radius: 999px;
    font-size: 12px; font-weight: 600;
  }
  .badge-line { background: var(--paper); border: 1px solid var(--line); color: var(--body); }
  .badge-warm { background: rgba(232, 98, 44, .12); border: 1px solid rgba(232, 98, 44, .3); color: #A83F16; }
  .badge-accent { background: rgba(184, 240, 60, .28); border: 1px solid rgba(145, 190, 40, .5); color: #3F5210; }
  .reward-card h3 { margin: 14px 0 10px; }
  .reward-list { list-style: none; padding: 0; margin: 0; }
  .reward-list li {
    position: relative;
    padding-left: 18px;
    font-size: 14px;
    color: var(--muted);
    line-height: 1.8;
  }
  .reward-list li::before {
    content: "";
    position: absolute; left: 0; top: 11px;
    width: 6px; height: 6px;
    background: var(--accent);
    border: 1px solid rgba(12,20,18,.5);
  }
  .reward-media { margin-top: 18px; border-radius: var(--radius-img); overflow: hidden; aspect-ratio: 16 / 9; }
  .reward-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 400ms var(--ease); }
  .reward-card:hover .reward-media img { transform: scale(1.03); }

  /* 任务进度 */
  .progress-panel {
    background: var(--ink);
    border-radius: 24px;
    padding: 44px 40px;
    color: var(--paper);
  }
  .progress-panel h2 { color: #fff; }
  .progress-row { padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
  .progress-row:last-child { border-bottom: 0; }
  .progress-top { display: flex; align-items: center; gap: 14px; justify-content: space-between; margin-bottom: 10px; }
  .progress-name { font-size: 15px; font-weight: 700; color: #fff; }
  .progress-pct { font-size: 15px; font-weight: 800; color: var(--accent); }
  .bar { height: 8px; border-radius: 999px; background: rgba(255,255,255,.14); overflow: hidden; }
  .bar > i {
    display: block; height: 100%; width: 0;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 78%, var(--clay) 100%);
    transition: width 800ms cubic-bezier(.2,.7,.3,1);
  }
  .milestone {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 40px;
    position: relative;
  }
  .milestone::before {
    content: ""; position: absolute; left: 6px; right: 6px; top: 7px; height: 1px; background: rgba(255,255,255,.24);
  }
  .ms-item { position: relative; padding-right: 14px; }
  .ms-dot {
    width: 15px; height: 15px; border-radius: 50%;
    background: var(--ink); border: 2px solid var(--accent);
    position: relative; z-index: 1;
  }
  .ms-item .t { font-size: 12.5px; font-weight: 700; color: var(--accent); margin-top: 14px; }
  .ms-item .d { font-size: 14px; color: rgba(255,255,255,.78); margin-top: 4px; }

  /* 最新信息列表 */
  .news-list { display: flex; flex-direction: column; gap: 16px; }
  .news-item {
    display: grid;
    grid-template-columns: 232px 1fr;
    gap: 22px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 16px;
    box-shadow: var(--shadow-1);
    transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .news-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
  .news-thumb { border-radius: var(--radius-img); overflow: hidden; aspect-ratio: 4 / 3; background: #EDEBE3; }
  .news-thumb img { width: 100%; height: 100%; object-fit: cover; }
  .news-body { display: flex; flex-direction: column; justify-content: space-between; padding: 4px 6px 4px 0; }
  .news-body h3 { font-size: 18px; line-height: 1.45; }
  .news-body h3 a:hover { color: var(--clay); }
  .news-excerpt {
    font-size: 14px; line-height: 1.65; color: var(--muted);
    margin-top: 8px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  }
  .news-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; font-size: 13px; color: var(--muted); }
  .empty-state {
    background: #F2F1EC;
    border: 1px dashed #C9C7BE;
    border-radius: var(--radius-card);
    padding: 46px 24px;
    text-align: center;
    color: var(--muted);
  }

  /* 分类入口 */
  .cat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
  .cat-card {
    position: relative;
    display: block;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 30px 28px 28px;
    box-shadow: var(--shadow-1);
    overflow: hidden;
    transition: transform 220ms var(--ease), box-shadow 220ms var(--ease), border-color 220ms var(--ease);
  }
  .cat-card::after {
    content: "";
    position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
    background: var(--accent);
    transform: scaleY(0); transform-origin: top;
    transition: transform 260ms var(--ease);
  }
  .cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: #CFCDC5; }
  .cat-card:hover::after { transform: scaleY(1); }
  .cat-card h3 { font-size: 22px; }
  .cat-card p { margin-top: 10px; font-size: 14.5px; color: var(--muted); }
  .cat-arrow { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; font-weight: 700; font-size: 15px; color: var(--ink); }
  .cat-card:hover .cat-arrow span { transform: translateX(4px); }
  .cat-arrow span { transition: transform 220ms var(--ease); }

  /* 证据区块 */
  .evidence { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .evidence-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .ev-card { padding: 26px 22px; border: 1px solid var(--line); border-radius: var(--radius-card); background: var(--paper); }
  .ev-card .n { font-size: 32px; font-weight: 900; color: var(--ink); letter-spacing: -.02em; }
  .ev-card .t { font-size: 14.5px; font-weight: 700; margin-top: 8px; color: var(--ink); }
  .ev-card .d { font-size: 13.5px; color: var(--muted); margin-top: 6px; line-height: 1.7; }

  /* FAQ */
  .faq-wrap { max-width: 800px; margin: 0 auto; }
  .faq-item {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 220ms var(--ease);
  }
  .faq-item.open { box-shadow: var(--shadow-1); }
  .faq-q {
    width: 100%;
    display: flex; align-items: center; justify-content: space-between; gap: 18px;
    padding: 20px 22px;
    text-align: left;
    font-size: 16.5px; font-weight: 700; color: var(--ink);
  }
  .faq-icon {
    flex-shrink: 0;
    width: 26px; height: 26px;
    border-radius: 50%;
    border: 1px solid var(--line);
    display: grid; place-items: center;
    font-size: 16px; line-height: 1; color: var(--ink);
    transition: transform 260ms var(--ease), background-color 200ms var(--ease);
  }
  .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); border-color: var(--accent); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height 260ms var(--ease); }
  .faq-a-inner { padding: 0 22px 22px; font-size: 15px; color: var(--muted); line-height: 1.8; }

  /* 底部转化条 */
  .cta-band {
    background: var(--ink);
    border-radius: 24px;
    padding: 40px 40px;
    display: flex; align-items: center; justify-content: space-between; gap: 28px;
  }
  .cta-band h2 { color: #fff; font-size: clamp(22px, 2.4vw, 30px); }
  .cta-band p { color: rgba(255,255,255,.72); margin-top: 10px; max-width: 46em; }
  .cta-band .btn-primary { background: var(--accent); color: var(--ink); flex-shrink: 0; }
  .cta-band .btn-primary:hover { background: #fff; color: var(--ink); }

  /* 页脚 */
  .site-footer { background: var(--ink); color: var(--paper); margin-top: 110px; }
  .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px; padding: 66px 0 40px; }
  .site-footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
  .site-footer .brand-text { color: #fff; }
  .footer-desc { color: rgba(255,255,255,.66); font-size: 14px; line-height: 1.8; margin-top: 16px; max-width: 34em; }
  .footer-list { list-style: none; padding: 0; margin: 0; }
  .footer-list li { margin-bottom: 10px; }
  .footer-list a { font-size: 14px; color: rgba(255,255,255,.72); transition: color 200ms var(--ease); }
  .footer-list a:hover { color: var(--accent); }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,.14);
    padding: 20px 0 30px;
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
    font-size: 13px; color: rgba(255,255,255,.55);
  }

  /* 进场动效 */
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms var(--ease), transform 600ms var(--ease); }
  .reveal.in { opacity: 1; transform: translateY(0); }

  @media (max-width: 1024px) {
    .section { padding: 72px 0; }
    .hero { min-height: 580px; padding: 138px 0 56px; }
    .hero-inner { grid-template-columns: 1fr; gap: 28px; align-items: start; }
    .hero-side { border-left: 0; border-top: 1px solid rgba(255,255,255,.22); padding-left: 0; padding-top: 16px; }
    .step-band { grid-template-columns: repeat(2, 1fr); }
    .reward-grid { grid-template-columns: repeat(4, 1fr); }
    .reward-lg { grid-column: span 4; }
    .reward-sm { grid-column: span 2; }
    .evidence-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; padding: 52px 0 32px; }
  }
  @media (max-width: 768px) {
    .container { padding: 0 18px; }
    .section { padding: 56px 0; }
    .nav-channelrow { display: none; }
    .nav-main { display: none; }
    .hamburger { display: inline-flex; margin-left: auto; }
    .hero { min-height: 520px; padding: 118px 0 46px; }
    .stat-strip-inner { grid-template-columns: 1fr; }
    .stat-item { border-right: 0; border-bottom: 1px solid var(--line); padding: 20px 0; }
    .stat-item:last-child { border-bottom: 0; }
    .section-head { flex-direction: column; align-items: flex-start; margin-bottom: 28px; }
    .step-band { grid-template-columns: 1fr; gap: 14px; }
    .step-num { font-size: 44px; }
    .reward-grid { grid-template-columns: 1fr; }
    .reward-lg, .reward-sm { grid-column: span 1; }
    .progress-panel { padding: 28px 20px; border-radius: 20px; }
    .milestone { grid-template-columns: 1fr 1fr; gap: 22px; }
    .milestone::before { display: none; }
    .news-item { grid-template-columns: 1fr; gap: 14px; }
    .news-thumb { aspect-ratio: 16 / 9; }
    .cat-grid { grid-template-columns: 1fr; }
    .evidence-grid { grid-template-columns: 1fr; }
    .cta-band { flex-direction: column; align-items: flex-start; padding: 30px 22px; border-radius: 20px; }
    .cta-band .btn-primary { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; padding: 44px 0 28px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .site-footer { margin-top: 72px; }
  }
  @media (max-width: 520px) {
    h1 { font-size: 30px; }
    .hero-actions .btn-primary, .hero-actions .btn-ghost-light { width: 100%; }
    .hero-sub { font-size: 15px; }
    .brand-text { font-size: 15px; }
  }
  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
  }

/* roulang page: article */
:root{
    --ink:#0C1412;
    --accent:#B8F03C;
    --clay:#E8622C;
    --paper:#F7F6F2;
    --card:#FFFFFF;
    --line:#E2E0D8;
    --text:#2A2E2C;
    --muted:#6E736F;
    --radius-card:18px;
    --radius-img:14px;
    --shadow-1:0 1px 2px rgba(12,20,18,.06);
    --shadow-2:0 12px 28px -12px rgba(12,20,18,.22);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--text);
    font-family:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
  ul{list-style:none;padding:0;}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
  .num{font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  .narrow{max-width:760px;}

  /* ===== 顶部导航 ===== */
  .site-header{
    position:sticky;top:0;z-index:50;
    background:rgba(247,246,242,.96);
    border-bottom:1px solid transparent;
    transition:background .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(247,246,242,.97);
    border-bottom-color:var(--line);
    box-shadow:0 6px 18px -14px rgba(12,20,18,.5);
  }
  .header-top{
    display:flex;align-items:center;gap:18px;
    height:68px;transition:height .22s var(--ease);
  }
  .site-header.is-scrolled .header-top{height:58px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand-mark{
    width:30px;height:30px;border-radius:9px;flex-shrink:0;
    background:var(--ink);
    position:relative;
  }
  .brand-mark::after{
    content:"";position:absolute;left:8px;top:8px;width:14px;height:14px;
    border-radius:4px;background:var(--accent);
  }
  .brand-text{font-size:19px;font-weight:900;letter-spacing:-.02em;color:var(--ink);white-space:nowrap;}
  .brand-sub{font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--muted);display:block;line-height:1.1;}

  .nav-main{display:flex;align-items:center;gap:10px;margin-left:auto;}
  .nav-icon-btn{
    display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;
    border-radius:999px;border:1px solid var(--line);background:#fff;
    font-size:13px;font-weight:600;cursor:pointer;
    transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .nav-icon-btn:hover{border-color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-1);}
  .chip-trend{
    display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:999px;
    background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:#3a403d;
    transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
  }
  .chip-trend:hover{border-color:var(--ink);background:var(--paper);transform:translateY(-1px);}
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 18px;
    border-radius:999px;background:var(--ink);color:#F7F6F2;font-size:13px;font-weight:700;
    border:1px solid var(--ink);
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
  }
  .btn-primary:hover{background:var(--accent);color:var(--ink);border-color:var(--accent);transform:translateY(-1px);}
  .btn-lg{height:48px;padding:0 26px;font-size:15px;}

  .header-channels{
    border-top:1px solid var(--line);
    height:44px;display:flex;align-items:center;
  }
  .site-header.is-scrolled .header-channels{height:40px;}
  .channel-list{display:flex;align-items:center;gap:26px;height:100%;}
  .channel-link{
    position:relative;display:inline-flex;align-items:center;height:100%;
    font-size:14px;font-weight:600;color:var(--muted);
    transition:color .22s var(--ease);
  }
  .channel-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
    background:var(--accent);transform:scaleX(0);transform-origin:left;
    transition:transform .24s var(--ease);
  }
  .channel-link:hover{color:var(--ink);}
  .channel-link:hover::after,.channel-link.active::after{transform:scaleX(1);}
  .channel-link.active{color:var(--ink);font-weight:700;}
  .channel-tag{
    font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--ink);
    background:var(--accent);border-radius:999px;padding:2px 8px;margin-left:8px;
  }
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
    background:#fff;align-items:center;justify-content:center;gap:4px;flex-direction:column;cursor:pointer;
  }
  .nav-toggle span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;}

  .search-panel{
    display:none;border-top:1px solid var(--line);background:#fff;padding:14px 0;
  }
  .search-panel.open{display:block;}
  .search-row{display:flex;gap:12px;align-items:center;}
  .search-input{
    flex:1;height:48px;border-radius:12px;border:1px solid var(--line);background:var(--paper);
    padding:0 16px;font-size:15px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  }
  .search-input:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 2px var(--accent);}
  .search-close{
    height:48px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:#fff;
    font-size:14px;font-weight:600;cursor:pointer;transition:border-color .2s var(--ease);
  }
  .search-close:hover{border-color:var(--ink);}

  .drawer-mask{
    position:fixed;inset:0;background:rgba(12,20,18,.4);opacity:0;visibility:hidden;
    transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:60;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:86%;max-width:340px;background:var(--paper);
    z-index:61;transform:translateX(100%);transition:transform .28s var(--ease);
    padding:22px 20px 32px;overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--muted);margin:22px 0 10px;}
  .drawer-links{display:flex;flex-direction:column;gap:2px;}
  .drawer-links a{
    padding:12px 14px;border-radius:12px;background:#fff;border:1px solid var(--line);
    font-size:15px;font-weight:600;color:var(--ink);
  }
  .drawer-chips{display:flex;flex-wrap:wrap;gap:8px;}
  .drawer-close{
    width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;
    font-size:16px;cursor:pointer;margin-left:auto;display:block;
  }

  /* ===== 文章页头部 ===== */
  .article-hero{
    position:relative;color:#fff;overflow:hidden;
    background-image:linear-gradient(90deg,rgba(12,20,18,.94) 0%,rgba(12,20,18,.80) 48%,rgba(12,20,18,.56) 100%),url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    padding:34px 0 76px;
  }
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:12px;color:rgba(247,246,242,.68);margin-bottom:22px;
  }
  .breadcrumb a{color:rgba(247,246,242,.68);transition:color .2s var(--ease);}
  .breadcrumb a:hover{color:var(--accent);}
  .breadcrumb .sep{color:rgba(247,246,242,.35);}
  .breadcrumb .current{color:#fff;font-weight:600;}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px;}
  .badge-cat{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:700;letter-spacing:.06em;
    background:var(--accent);color:var(--ink);
  }
  .badge-ghost{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.06em;
    border:1px solid rgba(247,246,242,.32);color:rgba(247,246,242,.9);
  }
  .article-title{
    font-size:clamp(1.7rem,4.4vw,3.1rem);
    font-weight:900;line-height:1.22;letter-spacing:-.02em;
    max-width:900px;color:#fff;
  }
  .meta-row{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
    margin-top:22px;font-size:13px;color:rgba(247,246,242,.72);
  }
  .meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(247,246,242,.4);display:inline-block;}

  .quickfacts{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
    margin-top:-44px;position:relative;z-index:2;
  }
  .fact{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:18px 20px;box-shadow:var(--shadow-1);
    transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .fact:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .fact-label{font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);}
  .fact-value{font-size:16px;font-weight:800;color:var(--ink);margin-top:6px;line-height:1.5;word-break:break-word;}

  /* ===== 正文 ===== */
  .article-shell{padding:54px 0 20px;}
  .article-body{font-size:16px;line-height:1.85;color:var(--text);overflow-wrap:break-word;}
  .article-body > p:first-of-type{font-size:18px;line-height:1.9;color:#1c211f;}
  .article-body p{margin:1.15em 0;}
  .article-body h2{
    position:relative;font-size:clamp(1.3rem,2.6vw,1.7rem);font-weight:800;
    color:var(--ink);letter-spacing:-.01em;margin:2.2em 0 .8em;padding-left:16px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
    border-radius:2px;background:var(--accent);
  }
  .article-body h3{font-size:1.15rem;font-weight:700;color:var(--ink);margin:1.8em 0 .6em;}
  .article-body h4{font-size:1rem;font-weight:700;color:var(--ink);margin:1.5em 0 .5em;}
  .article-body a{color:var(--ink);font-weight:600;border-bottom:1px solid var(--accent);}
  .article-body a:hover{background:rgba(184,240,60,.35);}
  .article-body strong{color:var(--ink);font-weight:800;}
  .article-body blockquote{
    margin:1.6em 0;padding:20px 24px;border-left:3px solid var(--accent);
    background:var(--paper);border-radius:0 var(--radius-img) var(--radius-img) 0;color:#333a37;
  }
  .article-body ul{margin:1.2em 0;}
  .article-body ul li{position:relative;padding-left:22px;margin:.5em 0;}
  .article-body ul li::before{
    content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;
    border-radius:2px;background:var(--accent);
  }
  .article-body ol{list-style:decimal;margin:1.2em 0 1.2em 1.4em;}
  .article-body ol li{margin:.5em 0;}
  .article-body img{border-radius:var(--radius-img);margin:1.6em auto;}
  .article-body figure{margin:1.6em 0;}
  .article-body figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:10px;}
  .article-body hr{border:none;border-top:1px solid var(--line);margin:2.4em 0;}
  .article-body table{
    width:100%;border-collapse:collapse;margin:1.6em 0;font-size:14px;
    border:1px solid var(--line);border-radius:12px;overflow:hidden;
  }
  .article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
  .article-body th{background:#F1EFE8;font-weight:700;color:var(--ink);}
  .article-body tbody tr:nth-child(even){background:#FBFAF7;}

  .article-note{
    margin:36px 0 0;padding:18px 22px;border:1px dashed var(--line);border-radius:var(--radius-card);
    background:#FCFBF8;font-size:13px;color:var(--muted);line-height:1.8;
  }
  .article-note strong{color:var(--ink);font-weight:700;}

  .empty-state{
    text-align:center;padding:64px 24px;background:#FCFBF8;
    border:1px dashed var(--line);border-radius:var(--radius-card);
  }
  .empty-state .icon{
    width:56px;height:56px;border-radius:16px;background:var(--paper);border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;margin:0 auto 18px;font-size:22px;
  }
  .empty-state h2{font-size:20px;font-weight:800;color:var(--ink);margin-bottom:8px;}
  .empty-state p{font-size:14px;color:var(--muted);margin-bottom:22px;}

  /* 文内 CTA */
  .inline-cta{
    margin:48px 0 0;background:var(--ink);color:#F7F6F2;border-radius:var(--radius-card);
    padding:28px 30px;display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;
  }
  .inline-cta h3{font-size:19px;font-weight:800;color:#fff;margin-bottom:6px;}
  .inline-cta p{font-size:13px;color:rgba(247,246,242,.72);max-width:520px;}
  .btn-accent{
    display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 26px;
    border-radius:999px;background:var(--accent);color:var(--ink);font-size:14px;font-weight:800;
    border:1px solid var(--accent);white-space:nowrap;
    transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
  }
  .btn-accent:hover{background:#fff;border-color:#fff;transform:translateY(-1px);}
  .btn-outline{
    display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 24px;
    border-radius:999px;border:1.5px solid var(--ink);background:transparent;color:var(--ink);
    font-size:14px;font-weight:700;
    transition:background .22s var(--ease),transform .22s var(--ease);
  }
  .btn-outline:hover{background:#EDEBE3;transform:translateY(-1px);}
  .btn-ghost{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink);
  }
  .btn-ghost .arrow{transition:transform .22s var(--ease);}
  .btn-ghost:hover .arrow{transform:translateX(4px);}

  /* ===== 板块通用 ===== */
  .section{padding:64px 0;}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px;justify-content:space-between;margin-bottom:28px;}
  .section-title{font-size:clamp(1.4rem,3vw,2rem);font-weight:800;color:var(--ink);letter-spacing:-.02em;}
  .section-sub{font-size:14px;color:var(--muted);margin-top:8px;max-width:640px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
    letter-spacing:.12em;color:var(--muted);margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);display:inline-block;}

  /* 相关推荐 */
  .rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
  .rel-card{
    display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
    transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
  .rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper);}
  .rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
  .rel-card:hover .rel-thumb img{transform:scale(1.03);}
  .rel-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
  .rel-body h3{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5;}
  .rel-body p{font-size:13px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:auto;padding-top:6px;}
  .tag{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
    font-size:11px;font-weight:700;letter-spacing:.05em;
    background:var(--paper);border:1px solid var(--line);color:#4a504d;
  }
  .tag-clay{background:rgba(232,98,44,.12);border-color:rgba(232,98,44,.28);color:#B4481C;}

  /* FAQ */
  .faq-wrap{max-width:800px;margin:0 auto;}
  .faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden;}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;background:transparent;border:none;text-align:left;cursor:pointer;
    font-size:16px;font-weight:700;color:var(--ink);
  }
  .faq-icon{
    flex-shrink:0;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;color:var(--ink);
    transition:transform .26s var(--ease),background .26s var(--ease);
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
  .faq-a-inner{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.85;}

  /* 底部 CTA */
  .cta-band{padding:0 0 88px;}
  .cta-inner{
    background:var(--ink);border-radius:24px;padding:40px;
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  }
  .cta-inner h2{font-size:clamp(1.35rem,3vw,1.9rem);font-weight:900;color:#fff;letter-spacing:-.02em;}
  .cta-inner p{font-size:14px;color:rgba(247,246,242,.7);margin-top:10px;max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
  .btn-light{
    display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border-radius:999px;
    background:var(--paper);color:var(--ink);font-size:15px;font-weight:800;
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
  }
  .btn-light:hover{background:var(--accent);transform:translateY(-1px);}
  .btn-line{
    display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:999px;
    border:1.5px solid rgba(247,246,242,.4);color:#F7F6F2;font-size:15px;font-weight:700;background:transparent;
    transition:border-color .22s var(--ease),transform .22s var(--ease);
  }
  .btn-line:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}

  /* 页脚 */
  .site-footer{background:var(--ink);color:var(--paper);padding:64px 0 26px;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;}
  .footer-desc{font-size:13px;color:rgba(247,246,242,.66);line-height:1.9;margin-top:16px;max-width:340px;}
  .site-footer h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
  .footer-list li{font-size:13px;color:rgba(247,246,242,.66);margin-bottom:10px;line-height:1.7;}
  .footer-list a{color:rgba(247,246,242,.66);transition:color .2s var(--ease);}
  .footer-list a:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:44px;padding-top:20px;border-top:1px solid rgba(247,246,242,.14);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:12px;color:rgba(247,246,242,.5);
  }
  .site-footer .brand-text{color:#fff;}
  .site-footer .brand-mark{background:var(--paper);}
  .site-footer .brand-mark::after{background:var(--ink);}

  .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
  .reveal.in{opacity:1;transform:none;}

  @media (max-width:1024px){
    .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .nav-main .chip-trend:nth-of-type(2){display:none;}
  }
  @media (max-width:768px){
    .header-top{height:60px;gap:12px;}
    .nav-main{display:none;}
    .nav-toggle{display:flex;margin-left:auto;}
    .brand-text{font-size:17px;}
    .header-channels{height:42px;overflow-x:auto;-webkit-overflow-scrolling:touch;}
    .channel-list{gap:20px;white-space:nowrap;}
    .quickfacts{grid-template-columns:1fr;margin-top:-32px;}
    .article-hero{padding:26px 0 62px;}
    .section{padding:48px 0;}
    .cta-inner{padding:30px 24px;}
    .cta-band{padding-bottom:64px;}
    .inline-cta{padding:24px 22px;}
    .article-shell{padding:40px 0 16px;}
    .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  }
  @media (max-width:520px){
    .container{padding:0 16px;}
    .rel-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .article-title{font-size:1.55rem;}
    .inline-cta{flex-direction:column;align-items:flex-start;}
    .inline-cta .btn-accent{width:100%;}
    .cta-actions{width:100%;}
    .cta-actions a{flex:1;min-width:140px;}
    .faq-q{font-size:15px;padding:16px 18px;}
    .faq-a-inner{padding:0 18px 18px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category2 */
:root{
  --ink:#0C1412;
  --accent:#B8F03C;
  --clay:#E8622C;
  --paper:#F7F6F2;
  --card:#FFFFFF;
  --line:#E2E0D8;
  --text:#2A2E2C;
  --muted:#6E736F;
  --r-card:18px;
  --r-img:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(12,20,18,.06);
  --shadow-2:0 12px 28px -12px rgba(12,20,18,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:64px;
  --chan-h:44px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
.num{font-variant-numeric:tabular-nums}
[hidden]{display:none !important}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--paper{background:var(--paper)}
.section--white{background:#fff}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--muted);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px}
.section-title{
  font-size:clamp(26px,3.2vw,36px);
  font-weight:800;line-height:1.25;letter-spacing:-.02em;color:var(--ink);
}
.section-desc{margin-top:14px;color:var(--muted);font-size:15px;max-width:640px}
.hl-key{color:var(--ink);font-weight:800}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;line-height:1;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--accent);color:var(--ink);transform:translateY(-1px)}
.btn-ghost{background:transparent;border:1.5px solid var(--ink);color:var(--ink)}
.btn-ghost:hover{background:#EDEBE3}
.btn-light{background:var(--accent);color:var(--ink)}
.btn-light:hover{background:#ffffff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--ink);font-size:14px}
.btn-link .arrow{transition:transform .22s var(--ease)}
.btn-link:hover .arrow{transform:translateX(4px)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,246,242,.97);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease),background-color .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 20px -14px rgba(12,20,18,.35);background:rgba(247,246,242,.98)}
.header-top{
  height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:18px;
  transition:height .22s var(--ease);
}
.site-header.is-scrolled .header-top{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--ink);position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:5px;top:11px;width:16px;height:4px;border-radius:2px;
  background:var(--accent);transform:rotate(-32deg);
}
.brand-text{font-size:17px;font-weight:900;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:10px}
.nav-icon-btn{
  display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;
  font-size:13px;font-weight:600;color:var(--text);
  transition:.22s var(--ease);
}
.nav-icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.chip-trend{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-pill);
  background:#EDEBE3;color:#3A3E3C;font-size:13px;font-weight:600;
  transition:.22s var(--ease);
}
.chip-trend:hover{background:var(--ink);color:var(--paper)}
.header-channels{
  height:var(--chan-h);display:flex;align-items:center;gap:8px;overflow-x:auto;
  border-top:1px solid var(--line);
  transition:height .22s var(--ease);
  scrollbar-width:none;
}
.header-channels::-webkit-scrollbar{display:none}
.site-header.is-scrolled .header-channels{height:40px}
.channels{display:flex;align-items:center;gap:26px}
.channels a{
  position:relative;display:inline-flex;align-items:center;height:100%;
  padding:10px 0;font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap;
  transition:color .22s var(--ease);
}
.channels a::after{
  content:"";position:absolute;left:0;right:0;bottom:4px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.channels a:hover{color:var(--ink)}
.channels a:hover::after{transform:scaleX(1)}
.channels a.is-active{color:var(--ink);font-weight:800}
.channels a.is-active::after{transform:scaleX(1)}
.menu-toggle{
  display:none;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;font-size:13px;font-weight:700;
}
.search-panel{
  padding:12px 0 16px;border-top:1px solid var(--line);
}
.search-row{display:flex;gap:10px;align-items:center}
.search-row input{
  flex:1;height:48px;border-radius:12px;border:1px solid var(--line);background:#fff;
  padding:0 16px;font-size:15px;color:var(--text);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-row input::placeholder{color:#9A9E9B}
.search-row input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(184,240,60,.55);outline:none}
.search-close{
  height:48px;padding:0 18px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;
}
.search-close:hover{border-color:var(--ink)}
.hot-words{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.hot-words a{
  font-size:12px;font-weight:600;color:var(--muted);padding:5px 12px;border-radius:var(--r-pill);
  background:#EDEBE3;transition:.22s var(--ease);
}
.hot-words a:hover{background:var(--accent);color:var(--ink)}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(12,20,18,.4);opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:var(--paper);
  z-index:90;transform:translateX(102%);transition:transform .3s var(--ease);
  padding:20px;overflow-y:auto;box-shadow:-18px 0 40px -26px rgba(12,20,18,.5);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:800;color:var(--ink)}
.drawer-close{height:36px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;font-size:13px;font-weight:700}
.drawer-nav{display:grid;gap:6px;margin-bottom:20px}
.drawer-nav a{
  padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;transition:.22s var(--ease);
}
.drawer-nav a:hover{border-color:var(--ink)}
.drawer-nav a.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center right;
  color:var(--paper);
  padding:84px 0 64px;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(12,20,18,.94) 0%,rgba(12,20,18,.88) 40%,rgba(12,20,18,.42) 100%);
}
.hero .container{position:relative;z-index:2}
.hero-inner{max-width:720px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(184,240,60,.16);color:var(--accent);
  font-size:12px;font-weight:700;letter-spacing:.08em;margin-bottom:18px;
}
.hero h1{
  font-size:clamp(30px,5vw,52px);font-weight:900;line-height:1.16;letter-spacing:-.02em;
}
.hero h1 .accent-line{color:var(--accent)}
.hero-sub{margin-top:18px;font-size:clamp(15px,1.6vw,17px);color:rgba(247,246,242,.82);max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-actions .btn-ghost{color:var(--paper);border-color:rgba(247,246,242,.55)}
.hero-actions .btn-ghost:hover{background:rgba(247,246,242,.12);color:var(--paper)}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:18px 34px;margin-top:38px;padding-top:22px;
  border-top:1px solid rgba(247,246,242,.22);
}
.hero-stat{min-width:150px}
.hero-stat dt{font-size:12px;color:rgba(247,246,242,.62);letter-spacing:.06em}
.hero-stat dd{margin:4px 0 0;font-size:20px;font-weight:800;color:var(--paper)}
.hero-stat dd .unit{font-size:12px;font-weight:600;color:rgba(247,246,242,.6);margin-left:4px}

/* ---------- 标签条 ---------- */
.filter-bar{
  background:#fff;border-bottom:1px solid var(--line);
  padding:18px 0;position:relative;z-index:3;
}
.filter-list{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
.filter-list::-webkit-scrollbar{display:none}
.filter-list a{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--paper);font-size:13px;font-weight:600;color:var(--text);
  white-space:nowrap;transition:.22s var(--ease);
}
.filter-list a:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- KPI ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.kpi{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.kpi:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.kpi-label{font-size:13px;color:var(--muted);font-weight:600}
.kpi-value{font-size:clamp(26px,3vw,34px);font-weight:900;color:var(--ink);line-height:1.1;margin-top:8px}
.kpi-value .unit{font-size:13px;font-weight:700;color:var(--muted);margin-left:4px}
.kpi-note{font-size:12px;color:var(--muted);margin-top:8px}

/* ---------- 进度条 ---------- */
.progress-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-1);
}
.progress-row{padding:14px 0;border-bottom:1px solid var(--line)}
.progress-row:last-child{border-bottom:0;padding-bottom:0}
.progress-row:first-child{padding-top:0}
.progress-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.progress-name{font-size:15px;font-weight:700;color:var(--ink)}
.progress-meta{display:flex;align-items:center;gap:12px}
.progress-pct{font-size:14px;font-weight:800;color:var(--ink)}
.bar{height:8px;border-radius:var(--r-pill);background:#EDEBE3;margin-top:10px;overflow:hidden}
.bar span{
  display:block;height:100%;width:0;border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--ink) 0%,var(--ink) 70%,var(--clay) 100%);
  transition:width .8s cubic-bezier(.2,.8,.2,1);
}
.js .bar span{width:0}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;background:var(--paper);border:1px solid var(--line);color:var(--text);
}
.badge-accent{background:rgba(184,240,60,.28);border-color:rgba(184,240,60,.6);color:#33420D}
.badge-clay{background:rgba(232,98,44,.12);border-color:rgba(232,98,44,.32);color:#A63D14}
.badge-ink{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- 卡片网格 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:22px}
.span-7{grid-column:span 7}
.span-6{grid-column:span 6}
.span-5{grid-column:span 5}
.span-12{grid-column:span 12}
.task-card{
  display:flex;flex-direction:column;height:100%;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.task-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#D5D2C8}
.task-card .top-strip{height:4px;background:var(--ink)}
.task-card.tone-accent .top-strip{background:var(--accent)}
.task-card.tone-clay .top-strip{background:var(--clay)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:#EDEBE3}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s var(--ease)}
.task-card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-tags{display:flex;flex-wrap:wrap;gap:8px}
.card-title{font-size:20px;font-weight:800;color:var(--ink);line-height:1.35}
.card-text{font-size:14px;color:var(--muted);line-height:1.7}
.card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-points{font-size:13px;font-weight:700;color:var(--ink)}
.card-points .unit{color:var(--muted);font-weight:600}

/* ---------- 对比表 ---------- */
.table-shell{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.table-scroll{overflow-x:auto}
.cmp-table{min-width:760px;font-size:14px}
.cmp-table thead th{
  background:var(--ink);color:var(--paper);font-weight:700;font-size:13px;letter-spacing:.04em;
  text-align:left;padding:16px 18px;white-space:nowrap;
}
.cmp-table tbody td{padding:16px 18px;border-bottom:1px solid var(--line);color:var(--text);vertical-align:top}
.cmp-table tbody tr:last-child td{border-bottom:0}
.cmp-table tbody tr:nth-child(even){background:#FBFAF7}
.cmp-table tbody tr.is-hl{background:rgba(232,98,44,.09)}
.cmp-table tbody tr.is-hl td{color:#7A2E0E}
.cmp-table .lv{font-weight:800;color:var(--ink);white-space:nowrap}
.cmp-table tbody tr.is-hl .lv{color:#A63D14}
.table-note{padding:14px 18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);background:#FBFAF7}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-no{
  font-size:clamp(40px,5vw,56px);font-weight:900;line-height:1;color:transparent;
  -webkit-text-stroke:1.5px var(--ink);letter-spacing:-.03em;
}
.step-title{font-size:17px;font-weight:800;color:var(--ink);margin-top:14px}
.step-text{font-size:14px;color:var(--muted);margin-top:8px}

/* ---------- 横向卡带 ---------- */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 18px;margin:0 -4px}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:#D5D2C8;border-radius:99px}
.rail-card{
  flex:0 0 auto;width:296px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.rail-card .card-media{aspect-ratio:4/3}
.rail-card .card-body{padding:18px}
.rail-card .card-title{font-size:17px}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s var(--ease);
}
.faq-item.is-open{border-color:var(--ink)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;text-align:left}
.faq-q span.txt{font-size:16px;font-weight:700;color:var(--ink);line-height:1.5}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--paper);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--ink);
  transition:transform .26s var(--ease),background-color .26s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent);border-color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 22px 22px;font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- 跳转卡 ---------- */
.jump-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--r-card);padding:28px;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.jump-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.jump-title{font-size:20px;font-weight:800;color:var(--ink)}
.jump-text{font-size:14px;color:var(--muted);margin-top:6px;max-width:560px}

/* ---------- 底部 CTA ---------- */
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:24px;
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:900;letter-spacing:-.01em;line-height:1.3}
.cta-band p{margin-top:10px;font-size:14px;color:rgba(247,246,242,.72);max-width:520px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:var(--paper);margin-top:96px;padding:66px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.site-footer .brand-text{color:var(--paper)}
.site-footer .brand-mark{background:var(--paper)}
.site-footer .brand-mark::after{background:var(--accent)}
.footer-desc{margin-top:16px;font-size:14px;color:rgba(247,246,242,.68);line-height:1.8;max-width:360px}
.site-footer h4{font-size:14px;font-weight:800;letter-spacing:.04em;margin-bottom:16px;color:var(--paper)}
.footer-list li{margin-bottom:10px;font-size:14px;color:rgba(247,246,242,.68)}
.footer-list a{color:rgba(247,246,242,.68);transition:color .22s var(--ease)}
.footer-list a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(247,246,242,.16);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,246,242,.56);
}

/* ---------- 进场动画 ---------- */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr;gap:28px}
}
@media (max-width:1024px){
  .nav-main .chip-trend{display:none}
}
@media (max-width:900px){
  .nav-main{display:none}
  .menu-toggle{display:inline-flex}
  .span-7,.span-6,.span-5{grid-column:span 12}
  .grid-12{gap:18px}
}
@media (max-width:768px){
  :root{--nav-h:60px;--chan-h:42px}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .hero{padding:60px 0 48px}
  .hero-stats{gap:14px 24px}
  .hero-stat{min-width:120px}
  .cta-band{padding:28px;border-radius:20px}
  .faq-q{padding:18px}
  .site-footer{margin-top:64px;padding-top:52px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text{font-size:15px}
  .kpi-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .rail-card{width:262px}
  .jump-card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root {
    --ink: #0C1412;
    --ink-80: rgba(12, 20, 18, .8);
    --accent: #B8F03C;
    --clay: #E8622C;
    --paper: #F7F6F2;
    --surface: #FFFFFF;
    --line: #E2E0D8;
    --bodytext: #2A2E2C;
    --muted: #6E736F;
    --radius-card: 18px;
    --radius-img: 14px;
    --shadow-sm: 0 1px 2px rgba(12, 20, 18, .06);
    --shadow-lg: 0 12px 28px -12px rgba(12, 20, 18, .22);
    --ease: cubic-bezier(.2, .7, .3, 1);
    --header-h: 108px;
  }

  *, *::before, *::after { box-sizing: border-box; }

  html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--paper);
    color: var(--bodytext);
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    font-size: 16px;
    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 { font: inherit; color: inherit; }
  h1, h2, h3, h4 { margin: 0; color: var(--ink); line-height: 1.25; }
  p { margin: 0; }
  ul { margin: 0; padding: 0; list-style: none; }
  [hidden] { display: none !important; }

  .num, time, .kpi-value, .progress-num { font-variant-numeric: tabular-nums; }

  .sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .skip-link {
    position: absolute; left: 16px; top: -60px; z-index: 100;
    background: var(--ink); color: var(--paper); padding: 10px 18px;
    border-radius: 999px; transition: top 220ms var(--ease);
  }
  .skip-link:focus { top: 12px; }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 6px;
  }

  /* ---------- 头部与导航 ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: transparent;
    transition: background 240ms var(--ease), box-shadow 240ms var(--ease);
  }
  .site-header.is-scrolled {
    background: rgba(247, 246, 242, .96);
    box-shadow: 0 1px 0 var(--line), 0 6px 18px -14px rgba(12, 20, 18, .5);
    backdrop-filter: blur(8px);
  }

  .top-bar { border-bottom: 1px solid transparent; transition: border-color 240ms var(--ease); }
  .site-header.is-scrolled .top-bar { border-bottom-color: var(--line); }

  .top-bar-inner {
    display: flex; align-items: center; gap: 16px;
    height: 64px; transition: height 240ms var(--ease);
  }
  .site-header.is-scrolled .top-bar-inner { height: 56px; }

  .brand { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; }
  .brand-mark {
    width: 30px; height: 30px; border-radius: 9px;
    background: linear-gradient(140deg, var(--ink) 0%, #1d2a26 60%, var(--accent) 160%);
    position: relative; flex: 0 0 auto;
  }
  .brand-mark::after {
    content: ""; position: absolute; inset: 8px 9px;
    border-left: 3px solid var(--accent);
    border-bottom: 3px solid var(--accent);
    border-radius: 1px;
  }
  .brand-text {
    font-size: 18px; font-weight: 800; letter-spacing: -.01em; color: var(--ink); white-space: nowrap;
  }

  .nav-main {
    display: none; align-items: center; gap: 10px; margin-left: auto;
  }
  .nav-icon-btn {
    display: inline-flex; align-items: center; gap: 6px;
    height: 38px; padding: 0 16px; border-radius: 999px;
    background: var(--surface); border: 1px solid var(--line);
    font-size: 14px; font-weight: 600; cursor: pointer;
    transition: border-color 220ms var(--ease), transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .nav-icon-btn:hover { border-color: var(--ink); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

  .chip-trend {
    display: inline-flex; align-items: center; height: 38px; padding: 0 15px;
    border-radius: 999px; background: rgba(184, 240, 60, .22);
    border: 1px solid rgba(12, 20, 18, .08);
    font-size: 13px; font-weight: 600; color: var(--ink);
    transition: background 220ms var(--ease), transform 220ms var(--ease);
  }
  .chip-trend:hover { background: rgba(184, 240, 60, .45); transform: translateY(-1px); }

  .btn-primary {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 44px; padding: 0 22px; border: 1px solid var(--ink); border-radius: 999px;
    background: var(--ink); color: #F7F6F2;
    font-size: 15px; font-weight: 700; cursor: pointer;
    transition: background 220ms var(--ease), color 220ms var(--ease), transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .btn-primary:hover {
    background: var(--accent); color: var(--ink); border-color: var(--accent);
    transform: translateY(-1px); box-shadow: 0 10px 22px -14px rgba(12, 20, 18, .7);
  }
  .btn-primary:active { transform: translateY(0); }

  .btn-outline {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 44px; padding: 0 22px; border-radius: 999px;
    border: 1.5px solid var(--ink); background: transparent; color: var(--ink);
    font-size: 15px; font-weight: 700; cursor: pointer;
    transition: background 220ms var(--ease), transform 220ms var(--ease);
  }
  .btn-outline:hover { background: rgba(12, 20, 18, .06); transform: translateY(-1px); }

  .btn-ghost {
    display: inline-flex; align-items: center; gap: 6px; height: 40px; padding: 0 10px;
    background: transparent; border: 0; color: var(--ink);
    font-size: 14px; font-weight: 600; cursor: pointer;
  }
  .btn-ghost .arrow { transition: transform 220ms var(--ease); }
  .btn-ghost:hover .arrow { transform: translateX(4px); }

  .menu-btn {
    margin-left: auto; width: 42px; height: 38px; border-radius: 12px;
    border: 1px solid var(--line); background: var(--surface);
    display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
    cursor: pointer;
  }
  .menu-btn span { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 220ms var(--ease), opacity 220ms var(--ease); }
  .menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .channel-bar { border-bottom: 1px solid var(--line); }
  .channel-inner {
    display: flex; align-items: center; gap: 6px;
    height: 44px; overflow-x: auto; scrollbar-width: none;
  }
  .channel-inner::-webkit-scrollbar { display: none; }
  .channel-link {
    position: relative; display: inline-flex; align-items: center;
    height: 44px; padding: 0 14px; white-space: nowrap;
    font-size: 14px; font-weight: 600; color: var(--muted);
    transition: color 220ms var(--ease);
  }
  .channel-link::after {
    content: ""; position: absolute; left: 14px; right: 14px; bottom: 0; height: 2px;
    background: var(--accent); transform: scaleX(0); transform-origin: left;
    transition: transform 240ms var(--ease);
  }
  .channel-link:hover { color: var(--ink); }
  .channel-link:hover::after, .channel-link.is-active::after { transform: scaleX(1); }
  .channel-link.is-active { color: var(--ink); font-weight: 700; }

  .search-panel { background: rgba(247, 246, 242, .98); border-bottom: 1px solid var(--line); }
  .search-form { display: flex; align-items: center; gap: 12px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
  .search-form input {
    flex: 1 1 240px; height: 48px; padding: 0 16px; border-radius: 12px;
    border: 1px solid var(--line); background: var(--surface);
    transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .search-form input:focus {
    outline: none; border-color: var(--ink); box-shadow: 0 0 0 2px var(--accent);
  }

  .drawer {
    position: fixed; inset: 0 0 0 auto; width: min(340px, 86vw);
    background: var(--surface); z-index: 70;
    transform: translateX(102%); transition: transform 280ms var(--ease);
    padding: 22px; overflow-y: auto;
    box-shadow: -18px 0 40px -22px rgba(12, 20, 18, .5);
  }
  .drawer.is-open { transform: translateX(0); }
  .drawer h3 { font-size: 13px; letter-spacing: .08em; color: var(--muted); margin: 20px 0 10px; font-weight: 600; }
  .drawer-link {
    display: block; padding: 12px 14px; border-radius: 12px;
    font-size: 15px; font-weight: 600; color: var(--ink);
    border: 1px solid transparent;
  }
  .drawer-link:hover { background: var(--paper); border-color: var(--line); }
  .drawer-link.is-active { background: rgba(184, 240, 60, .25); border-color: rgba(12, 20, 18, .1); }
  .drawer-close {
    width: 40px; height: 40px; border-radius: 12px; border: 1px solid var(--line);
    background: var(--surface); cursor: pointer; font-size: 18px; line-height: 1;
  }
  .scrim {
    position: fixed; inset: 0; background: rgba(12, 20, 18, .4);
    z-index: 65; opacity: 0; pointer-events: none; transition: opacity 260ms var(--ease);
  }
  .scrim.is-open { opacity: 1; pointer-events: auto; }

  /* ---------- Hero ---------- */
  .page-hero {
    position: relative; overflow: hidden;
    background-image: linear-gradient(100deg, rgba(12, 20, 18, .93) 0%, rgba(12, 20, 18, .78) 46%, rgba(12, 20, 18, .42) 100%), url('/assets/images/backpic/back-1.webp');
    background-size: cover; background-position: center;
    color: #F2F1EC;
    margin-top: calc(var(--header-h) * -1);
    padding: calc(var(--header-h) + 56px) 0 68px;
  }
  .hero-inner { max-width: 720px; }
  .eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 12px; font-weight: 600; letter-spacing: .08em;
    color: var(--accent); text-transform: none; margin-bottom: 18px;
  }
  .eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--accent); }
  .page-hero h1 {
    color: #FFFFFF;
    font-size: clamp(30px, 4.4vw, 52px);
    font-weight: 900; letter-spacing: -.02em; line-height: 1.18;
  }
  .page-hero .hero-sub {
    margin-top: 18px; font-size: clamp(15px, 1.4vw, 18px);
    color: rgba(247, 246, 242, .82); max-width: 620px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
  .page-hero .btn-outline { border-color: rgba(247, 246, 242, .6); color: #F7F6F2; }
  .page-hero .btn-outline:hover { background: rgba(247, 246, 242, .14); }
  .page-hero .btn-primary { background: var(--accent); border-color: var(--accent); color: var(--ink); }
  .page-hero .btn-primary:hover { background: #F7F6F2; border-color: #F7F6F2; }

  /* ---------- KPI ---------- */
  .kpi-strip {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: -34px; position: relative; z-index: 2;
    overflow: hidden;
  }
  .kpi-item { padding: 20px 22px; border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); }
  .kpi-item:nth-child(2n) { border-right: 0; }
  .kpi-item:nth-last-child(-n+2) { border-bottom: 0; }
  .kpi-label { font-size: 12px; font-weight: 600; letter-spacing: .06em; color: var(--muted); }
  .kpi-value {
    display: block; margin-top: 6px; font-size: clamp(20px, 2vw, 26px);
    font-weight: 900; color: var(--ink); letter-spacing: -.01em;
  }
  .kpi-note { font-size: 13px; color: var(--muted); margin-top: 2px; }

  /* ---------- 主体布局 ---------- */
  main { display: block; }
  .section { padding: 72px 0; }
  .section-tight { padding: 48px 0 72px; }

  .layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; }

  .toc {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
    padding: 20px; box-shadow: var(--shadow-sm);
  }
  .toc-title { font-size: 13px; font-weight: 700; letter-spacing: .08em; color: var(--muted); margin-bottom: 12px; }
  .toc-list li + li { margin-top: 4px; }
  .toc-link {
    display: block; position: relative; padding: 9px 12px; border-radius: 10px;
    font-size: 14px; font-weight: 600; color: var(--muted);
    transition: color 200ms var(--ease), background 200ms var(--ease);
  }
  .toc-link::before {
    content: ""; position: absolute; left: 0; top: 10px; bottom: 10px; width: 3px;
    border-radius: 3px; background: var(--accent); opacity: 0;
    transition: opacity 200ms var(--ease);
  }
  .toc-link:hover { color: var(--ink); background: var(--paper); }
  .toc-link.is-active { color: var(--ink); background: var(--paper); }
  .toc-link.is-active::before { opacity: 1; }
  .toc-note {
    margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line);
    font-size: 13px; color: var(--muted);
  }

  .article-body { min-width: 0; }

  .doc-section {
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
    padding: 30px; box-shadow: var(--shadow-sm);
    scroll-margin-top: 132px;
  }
  .doc-section + .doc-section { margin-top: 28px; }
  .doc-section h2 {
    font-size: clamp(22px, 2.4vw, 30px); font-weight: 800; letter-spacing: -.01em;
    padding-left: 14px; position: relative;
  }
  .doc-section h2::before {
    content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px;
    border-radius: 3px; background: var(--accent);
  }
  .doc-section h3 { font-size: 19px; font-weight: 700; margin-top: 26px; }
  .doc-section p { margin-top: 14px; color: var(--bodytext); }
  .doc-section p.lead { font-size: 17px; color: var(--ink); }

  .figure { margin: 24px 0 0; }
  .figure img {
    width: 100%; aspect-ratio: 16 / 9; object-fit: cover;
    border-radius: var(--radius-img); border: 1px solid var(--line);
  }
  .figure figcaption { margin-top: 10px; font-size: 13px; color: var(--muted); }

  .check-list { margin-top: 18px; display: grid; gap: 12px; }
  .check-list li {
    position: relative; padding: 14px 16px 14px 44px;
    background: var(--paper); border: 1px solid var(--line); border-radius: 12px;
    font-size: 15px;
  }
  .check-list li::before {
    content: ""; position: absolute; left: 18px; top: 21px;
    width: 10px; height: 10px; border-radius: 3px; background: var(--accent);
  }
  .check-list strong { color: var(--ink); }

  .badge {
    display: inline-flex; align-items: center; height: 26px; padding: 0 12px;
    border-radius: 999px; font-size: 12px; font-weight: 600;
    background: var(--paper); border: 1px solid var(--line); color: var(--muted);
  }
  .badge-status { background: rgba(232, 98, 44, .12); border-color: rgba(232, 98, 44, .28); color: #a63f14; }
  .badge-accent { background: rgba(184, 240, 60, .28); border-color: rgba(12, 20, 18, .08); color: var(--ink); }

  .table-wrap { margin-top: 22px; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-img); }
  table { width: 100%; border-collapse: collapse; min-width: 520px; font-size: 14px; background: var(--surface); }
  thead th {
    text-align: left; padding: 14px 16px; background: var(--paper);
    font-size: 13px; font-weight: 700; color: var(--ink); letter-spacing: .02em;
    border-bottom: 1px solid var(--line);
  }
  tbody td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--bodytext); vertical-align: top; }
  tbody tr:nth-child(even) td { background: rgba(247, 246, 242, .7); }
  tbody tr:last-child td { border-bottom: 0; }
  tbody tr.is-highlight td { background: rgba(232, 98, 44, .08); }

  .progress-block { margin-top: 22px; display: grid; gap: 16px; }
  .progress-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 14px; align-items: center; }
  .progress-name { font-size: 15px; font-weight: 600; color: var(--ink); }
  .progress-num { font-size: 14px; font-weight: 700; color: var(--muted); }
  .progress-track {
    grid-column: 1 / -1; height: 8px; border-radius: 999px;
    background: var(--line); overflow: hidden;
  }
  .progress-fill { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--ink); transition: width 800ms var(--ease); }
  .progress-fill.is-accent { background: var(--accent); }
  .progress-fill.is-clay { background: var(--clay); }

  .faq-list { margin-top: 22px; display: grid; gap: 12px; max-width: 840px; }
  .faq-item { border: 1px solid var(--line); border-radius: 14px; background: var(--surface); overflow: hidden; }
  .faq-q {
    width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 18px 20px; background: transparent; border: 0; cursor: pointer; text-align: left;
    font-size: 16px; font-weight: 700; color: var(--ink);
  }
  .faq-q:hover { background: var(--paper); }
  .faq-icon {
    flex: 0 0 auto; width: 26px; height: 26px; border-radius: 50%;
    border: 1px solid var(--line); display: inline-flex; align-items: center; justify-content: center;
    font-size: 15px; font-weight: 700; color: var(--ink);
    transition: transform 260ms var(--ease), background 260ms var(--ease);
  }
  .faq-item.is-open .faq-icon { transform: rotate(45deg); background: var(--accent); border-color: var(--accent); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height 260ms var(--ease); }
  .faq-a-inner { padding: 0 20px 20px; font-size: 15px; color: var(--bodytext); }

  .jump-card {
    margin-top: 28px;
    display: grid; grid-template-columns: minmax(0, 1fr); gap: 0;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card);
    overflow: hidden; box-shadow: var(--shadow-sm);
    transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
  }
  .jump-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
  .jump-card img { width: 100%; height: 100%; min-height: 200px; object-fit: cover; }
  .jump-body { padding: 28px; }
  .jump-body h3 { font-size: 21px; font-weight: 800; }
  .jump-body p { margin-top: 10px; font-size: 15px; color: var(--muted); }
  .jump-cta { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-weight: 700; color: var(--ink); }
  .jump-cta .arrow { transition: transform 220ms var(--ease); }
  .jump-card:hover .jump-cta .arrow { transform: translateX(4px); }

  .cta-band {
    background: var(--ink); color: #F2F1EC; border-radius: 24px;
    padding: 34px; display: grid; gap: 22px; align-items: center;
    margin-top: 44px;
  }
  .cta-band h2 { color: #FFFFFF; font-size: clamp(22px, 2.4vw, 30px); font-weight: 800; }
  .cta-band p { margin-top: 10px; color: rgba(247, 246, 242, .78); font-size: 15px; }

  /* ---------- 页脚 ---------- */
  .site-footer { background: var(--ink); color: rgba(247, 246, 242, .82); margin-top: 80px; padding: 64px 0 26px; }
  .footer-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .site-footer .brand-text { color: #FFFFFF; }
  .footer-desc { margin-top: 14px; font-size: 14px; line-height: 1.8; color: rgba(247, 246, 242, .72); max-width: 340px; }
  .site-footer h4 { color: #FFFFFF; font-size: 14px; font-weight: 700; letter-spacing: .04em; margin-bottom: 14px; }
  .footer-list li { font-size: 14px; margin-bottom: 10px; color: rgba(247, 246, 242, .7); }
  .footer-list a { transition: color 200ms var(--ease); }
  .footer-list a:hover { color: var(--accent); }
  .footer-bottom {
    margin-top: 44px; padding-top: 20px; border-top: 1px solid rgba(247, 246, 242, .14);
    display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
    font-size: 13px; color: rgba(247, 246, 242, .58);
  }

  /* ---------- 入场动效 ---------- */
  .reveal { opacity: 0; transform: translateY(16px); transition: opacity 520ms var(--ease), transform 520ms var(--ease); }
  .reveal.is-visible { opacity: 1; transform: none; }

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

  /* ---------- 断点 ---------- */
  @media (min-width: 640px) {
    .kpi-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .kpi-item { border-bottom: 0; }
    .kpi-item:nth-child(2n) { border-right: 1px solid var(--line); }
    .kpi-item:last-child { border-right: 0; }
    .jump-card { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
  }

  @media (min-width: 768px) {
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .cta-band { grid-template-columns: minmax(0, 1fr) auto; padding: 40px 44px; }
    .nav-main { display: flex; }
    .menu-btn { display: none; }
  }

  @media (min-width: 1024px) {
    .layout { grid-template-columns: 250px minmax(0, 1fr); gap: 48px; align-items: start; }
    .toc { position: sticky; top: calc(var(--header-h) + 16px); }
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
    .section { padding: 96px 0; }
  }

  @media (max-width: 767px) {
    .page-hero { padding-top: calc(var(--header-h) - 18px); }
    .doc-section { padding: 24px 20px; }
    .cta-band { padding: 26px 22px; }
  }