/* roulang page: index */
:root {
      --primary: #12B886;
      --primary-dark: #0CA678;
      --primary-soft: #E6FCF5;
      --accent: #7C3AED;
      --accent-soft: #F3E8FF;
      --warning: #F59E0B;
      --text: #1F2937;
      --muted: #6B7280;
      --soft-text: #8A949E;
      --bg: #F7FAF8;
      --surface: #FFFFFF;
      --line: #E5E7EB;
      --line-strong: #C7D2CF;
      --footer: #103B34;
      --radius: 14px;
      --radius-lg: 20px;
      --shadow: 0 8px 24px rgba(17, 24, 39, .06);
      --shadow-strong: 0 16px 40px rgba(18, 184, 134, .16);
      --container: 1180px;
      --ease: .22s ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "HarmonyOS Sans", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      background:
        linear-gradient(90deg, rgba(18, 184, 134, .045) 1px, transparent 1px),
        linear-gradient(rgba(18, 184, 134, .04) 1px, transparent 1px),
        var(--bg);
      background-size: 28px 28px;
      line-height: 1.75;
      letter-spacing: 0;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    img {
      display: block;
      max-width: 100%;
    }

    button,
    input,
    textarea {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
      background: none;
    }

    input,
    textarea {
      width: 100%;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: #fff;
      color: var(--text);
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease);
    }

    input:focus,
    textarea:focus,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(18, 184, 134, .28);
      outline-offset: 3px;
    }

    .container {
      width: min(100% - 64px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(247, 250, 248, .92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(199, 210, 207, .7);
    }

    .nav-wrap {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      color: var(--text);
      white-space: nowrap;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 900;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 10px 22px rgba(18, 184, 134, .18);
    }

    .brand-name {
      font-size: 18px;
      line-height: 1.2;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .nav-links a {
      position: relative;
      padding: 10px 14px;
      border-radius: 999px;
      color: #405047;
      font-size: 15px;
      transition: color var(--ease), background var(--ease);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 12px;
      border: 1px solid var(--line);
      background: #fff;
      color: var(--text);
    }

    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 5px auto;
      border-radius: 2px;
      background: currentColor;
      transition: transform var(--ease), opacity var(--ease);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 700;
      font-size: 15px;
      line-height: 1.2;
      transition: transform var(--ease), background var(--ease), border-color var(--ease), color var(--ease), box-shadow var(--ease);
      white-space: nowrap;
    }

    .btn svg {
      width: 17px;
      height: 17px;
      transition: transform var(--ease);
    }

    .btn-primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(18, 184, 134, .18);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: var(--shadow-strong);
    }

    .btn-primary:hover svg {
      transform: translateX(3px);
    }

    .btn-secondary {
      color: var(--text);
      background: rgba(255, 255, 255, .78);
      border: 1px solid var(--line-strong);
    }

    .btn-secondary:hover {
      color: var(--accent);
      border-color: var(--accent);
      background: #fff;
    }

    .btn:active {
      transform: translateY(1px);
    }

    .section {
      padding: 84px 0;
    }

    .section-tight {
      padding: 58px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 28px;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
      color: var(--primary-dark);
      font-weight: 800;
      font-size: 14px;
    }

    .section-kicker::before {
      content: "";
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--warning);
      box-shadow: 0 0 0 5px rgba(245, 158, 11, .12);
    }

    h1,
    h2,
    h3 {
      line-height: 1.25;
      letter-spacing: 0;
      color: var(--text);
    }

    h1 {
      font-size: clamp(30px, 4vw, 46px);
      max-width: 850px;
    }

    h2 {
      font-size: clamp(24px, 3vw, 32px);
    }

    h3 {
      font-size: 21px;
    }

    .lead {
      color: #4B5563;
      font-size: 17px;
      line-height: 1.8;
    }

    .muted {
      color: var(--muted);
    }

    .hero {
      position: relative;
      padding: 72px 0 26px;
      overflow: hidden;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto -8% 34px auto;
      width: 48%;
      height: 46%;
      background:
        radial-gradient(circle at 12px 12px, rgba(124, 58, 237, .16) 2px, transparent 3px);
      background-size: 24px 24px;
      opacity: .55;
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(360px, .82fr);
      gap: 42px;
      align-items: center;
    }

    .hero-eyebrow {
      display: inline-flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
      margin-bottom: 18px;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 14px;
      font-weight: 700;
      color: var(--primary-dark);
      background: var(--primary-soft);
      border: 1px solid rgba(18, 184, 134, .16);
    }

    .pill.purple {
      color: var(--accent);
      background: var(--accent-soft);
      border-color: rgba(124, 58, 237, .14);
    }

    .hero-copy {
      max-width: 760px;
    }

    .hero-copy .lead {
      max-width: 720px;
      margin-top: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 28px;
    }

    .hero-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 30px;
    }

    .point {
      min-height: 86px;
      padding: 14px;
      border: 1px solid rgba(229, 231, 235, .9);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .75);
      box-shadow: 0 6px 18px rgba(17, 24, 39, .04);
    }

    .point strong {
      display: block;
      margin-bottom: 4px;
      font-size: 15px;
    }

    .point span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .download-preview {
      position: relative;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid rgba(229, 231, 235, .95);
      box-shadow: var(--shadow-strong);
      overflow: hidden;
    }

    .preview-top {
      height: 8px;
      background: linear-gradient(90deg, var(--primary), var(--accent), var(--warning));
    }

    .preview-body {
      padding: 24px;
    }

    .app-line {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 18px;
    }

    .app-icon {
      width: 58px;
      height: 58px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 24px;
      font-weight: 900;
      background:
        linear-gradient(135deg, rgba(18, 184, 134, .96), rgba(124, 58, 237, .92)),
        repeating-linear-gradient(45deg, transparent 0 8px, rgba(255,255,255,.18) 8px 10px);
    }

    .app-line h2 {
      font-size: 22px;
    }

    .system-tabs {
      display: flex;
      gap: 8px;
      padding: 5px;
      margin: 18px 0;
      border-radius: 999px;
      background: #F3F7F5;
      border: 1px solid var(--line);
    }

    .system-tabs button {
      flex: 1;
      min-height: 36px;
      border-radius: 999px;
      color: var(--muted);
      font-weight: 700;
      transition: color var(--ease), background var(--ease), box-shadow var(--ease);
    }

    .system-tabs button.active,
    .system-tabs button:hover {
      color: var(--primary-dark);
      background: #fff;
      box-shadow: 0 4px 12px rgba(17, 24, 39, .05);
    }

    .version-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin: 18px 0;
    }

    .version-item {
      padding: 12px;
      border-radius: 12px;
      background: #F7FAF8;
      border: 1px solid var(--line);
    }

    .version-item span {
      display: block;
      color: var(--muted);
      font-size: 12px;
    }

    .version-item strong {
      display: block;
      margin-top: 2px;
      font-size: 14px;
    }

    .qr-row {
      display: grid;
      grid-template-columns: 112px 1fr;
      gap: 14px;
      align-items: center;
      margin-top: 16px;
    }

    .qr-box {
      aspect-ratio: 1;
      border: 1px dashed #B8C6C2;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: var(--muted);
      font-size: 13px;
      background:
        linear-gradient(45deg, rgba(18,184,134,.08) 25%, transparent 25% 50%, rgba(18,184,134,.08) 50% 75%, transparent 75%);
      background-size: 16px 16px;
    }

    .hint-list {
      display: grid;
      gap: 8px;
      color: #4B5563;
      font-size: 14px;
    }

    .hint-list li,
    .check-list li {
      list-style: none;
      display: flex;
      gap: 8px;
      align-items: flex-start;
    }

    .hint-list li::before,
    .check-list li::before {
      content: "✓";
      flex: 0 0 19px;
      width: 19px;
      height: 19px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      margin-top: 3px;
      color: #fff;
      font-size: 12px;
      background: var(--primary);
    }

    .latest-strip {
      margin-top: 34px;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      background: rgba(255,255,255,.66);
    }

    .strip-inner {
      min-height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      font-size: 15px;
    }

    .strip-inner strong {
      color: var(--primary-dark);
    }

    .quick-grid {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 14px;
    }

    .quick-item {
      position: relative;
      min-height: 132px;
      padding: 18px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .quick-item:hover {
      transform: translateY(-2px);
      border-color: rgba(18, 184, 134, .42);
      box-shadow: 0 12px 26px rgba(17, 24, 39, .08);
    }

    .quick-icon {
      width: 36px;
      height: 36px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      margin-bottom: 12px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-weight: 900;
    }

    .quick-item h3 {
      font-size: 17px;
      margin-bottom: 4px;
    }

    .quick-item p {
      color: var(--muted);
      font-size: 13px;
      line-height: 1.55;
    }

    .quick-item .arrow {
      position: absolute;
      right: 16px;
      bottom: 14px;
      color: var(--soft-text);
      transition: color var(--ease), transform var(--ease);
    }

    .quick-item:hover .arrow {
      color: var(--primary);
      transform: translateX(3px);
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.06fr) minmax(330px, .94fr);
      gap: 24px;
      align-items: stretch;
    }

    .feature-card,
    .news-list,
    .topic-card,
    .faq-item,
    .guide-visual,
    .timeline,
    .feedback-box {
      background: #fff;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }

    .feature-card {
      overflow: hidden;
      transition: transform var(--ease), border-color var(--ease);
    }

    .feature-card:hover {
      transform: translateY(-2px);
      border-color: rgba(18,184,134,.42);
    }

    .media-art {
      min-height: 260px;
      position: relative;
      background:
        linear-gradient(135deg, rgba(18,184,134,.18), rgba(124,58,237,.13)),
        radial-gradient(circle at 18% 30%, rgba(245,158,11,.22), transparent 24%),
        #ECFDF5;
      overflow: hidden;
    }

    .media-art::before {
      content: "";
      position: absolute;
      inset: 34px;
      border-radius: 18px;
      border: 2px solid rgba(255,255,255,.88);
      background:
        linear-gradient(90deg, rgba(255,255,255,.74), rgba(255,255,255,.38)),
        repeating-linear-gradient(90deg, rgba(18,184,134,.18) 0 12px, transparent 12px 24px);
      box-shadow: inset 0 0 0 1px rgba(17,24,39,.04);
    }

    .media-art::after {
      content: "入口更新 · 下载提示 · 访问说明";
      position: absolute;
      left: 42px;
      bottom: 36px;
      max-width: calc(100% - 84px);
      padding: 10px 14px;
      border-radius: 999px;
      background: rgba(255,255,255,.86);
      color: #25534A;
      font-weight: 800;
      font-size: 14px;
      border: 1px solid rgba(18,184,134,.18);
    }

    .feature-content {
      padding: 24px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 5px 10px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-size: 13px;
      font-weight: 800;
    }

    .tag.purple {
      color: var(--accent);
      background: var(--accent-soft);
    }

    .tag.warn {
      color: #A16207;
      background: #FEF3C7;
    }

    .feature-content h3 {
      margin: 14px 0 10px;
      font-size: 24px;
      transition: color var(--ease);
    }

    .feature-card:hover h3,
    .news-row:hover h3 {
      color: var(--primary-dark);
    }

    .card-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 16px;
      color: var(--soft-text);
      font-size: 13px;
    }

    .news-list {
      padding: 8px;
    }

    .news-row {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 14px;
      padding: 14px;
      border-radius: 12px;
      transition: background var(--ease), transform var(--ease);
    }

    .news-row + .news-row {
      border-top: 1px solid var(--line);
    }

    .news-row:hover {
      background: #F7FAF8;
      transform: translateY(-2px);
    }

    .date-badge {
      min-height: 78px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      text-align: center;
      color: #25534A;
      background: var(--primary-soft);
      font-weight: 800;
      line-height: 1.25;
    }

    .date-badge span {
      display: block;
      color: var(--muted);
      font-size: 12px;
      font-weight: 700;
    }

    .news-row h3 {
      font-size: 18px;
      margin-bottom: 4px;
      transition: color var(--ease);
    }

    .news-row p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .download-band {
      background: linear-gradient(180deg, rgba(230,252,245,.92), rgba(255,255,255,.72));
      border-top: 1px solid rgba(18,184,134,.12);
      border-bottom: 1px solid rgba(18,184,134,.12);
    }

    .download-grid {
      display: grid;
      grid-template-columns: minmax(0, .95fr) minmax(360px, .75fr);
      gap: 32px;
      align-items: center;
    }

    .download-copy .lead {
      margin: 14px 0 20px;
    }

    .check-list {
      display: grid;
      gap: 10px;
      margin-top: 18px;
      color: #4B5563;
    }

    .download-panel {
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid rgba(18,184,134,.22);
      box-shadow: var(--shadow-strong);
      overflow: hidden;
    }

    .download-panel .preview-body {
      padding: 26px;
    }

    .guide-grid {
      display: grid;
      grid-template-columns: minmax(0, .86fr) minmax(360px, 1fr);
      gap: 28px;
      align-items: center;
    }

    .timeline {
      padding: 10px;
    }

    .step {
      display: grid;
      grid-template-columns: 54px 1fr;
      gap: 12px;
      padding: 18px;
      border-radius: 12px;
      position: relative;
    }

    .step + .step {
      border-top: 1px solid var(--line);
    }

    .step-num {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: #fff;
      background: var(--primary);
      font-weight: 900;
      box-shadow: 0 7px 18px rgba(18,184,134,.18);
    }

    .step h3 {
      font-size: 18px;
      margin-bottom: 4px;
    }

    .step p {
      color: var(--muted);
      font-size: 14px;
    }

    .guide-visual {
      min-height: 420px;
      padding: 24px;
      position: relative;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(255,255,255,.94), rgba(230,252,245,.9)),
        radial-gradient(circle at 80% 18%, rgba(124,58,237,.12), transparent 28%);
    }

    .browser-mock {
      height: 100%;
      min-height: 350px;
      border-radius: 18px;
      border: 1px solid var(--line);
      background: #fff;
      overflow: hidden;
      box-shadow: 0 14px 34px rgba(17,24,39,.08);
    }

    .browser-bar {
      height: 46px;
      display: flex;
      align-items: center;
      gap: 7px;
      padding: 0 16px;
      background: #F3F7F5;
      border-bottom: 1px solid var(--line);
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--warning);
    }

    .dot:nth-child(2) {
      background: var(--primary);
    }

    .dot:nth-child(3) {
      background: var(--accent);
    }

    .mock-content {
      padding: 22px;
    }

    .mock-title {
      width: 62%;
      height: 22px;
      border-radius: 999px;
      background: #D1FAE5;
      margin-bottom: 18px;
    }

    .mock-line {
      height: 12px;
      border-radius: 999px;
      background: #E5E7EB;
      margin-bottom: 10px;
    }

    .mock-line.short {
      width: 74%;
    }

    .mock-cards {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 12px;
      margin-top: 28px;
    }

    .mock-card {
      min-height: 100px;
      border-radius: 14px;
      background:
        linear-gradient(135deg, rgba(18,184,134,.14), rgba(124,58,237,.08));
      border: 1px solid rgba(18,184,134,.15);
    }

    .topic-layout {
      display: grid;
      grid-template-columns: 1.22fr .78fr;
      gap: 18px;
    }

    .topic-stack {
      display: grid;
      gap: 18px;
    }

    .topic-card {
      padding: 24px;
      position: relative;
      overflow: hidden;
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }

    .topic-card.big {
      min-height: 310px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background:
        linear-gradient(135deg, rgba(230,252,245,.92), rgba(255,255,255,.94)),
        radial-gradient(circle at 88% 20%, rgba(245,158,11,.18), transparent 25%);
    }

    .topic-card:hover {
      transform: translateY(-2px);
      border-color: rgba(18,184,134,.42);
      box-shadow: 0 12px 28px rgba(17,24,39,.08);
    }

    .topic-card h3 {
      margin: 12px 0 8px;
      font-size: 23px;
    }

    .topic-card p {
      color: var(--muted);
      font-size: 15px;
    }

    .topic-foot {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 20px;
      color: var(--soft-text);
      font-size: 13px;
    }

    .proof-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .proof {
      padding: 22px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .proof strong {
      display: block;
      margin-bottom: 6px;
      font-size: 25px;
      color: var(--primary-dark);
      line-height: 1.2;
    }

    .proof span {
      color: var(--muted);
      font-size: 14px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 28px;
      align-items: start;
    }

    .faq-intro {
      position: sticky;
      top: 102px;
    }

    .faq-list {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      overflow: hidden;
      box-shadow: none;
      transition: border-color var(--ease), box-shadow var(--ease);
    }

    .faq-question {
      min-height: 60px;
      width: 100%;
      padding: 16px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      color: var(--text);
      font-weight: 800;
      text-align: left;
    }

    .faq-question span:last-child {
      flex: 0 0 28px;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: #F3F7F5;
      color: var(--primary-dark);
      transition: transform var(--ease), background var(--ease);
    }

    .faq-answer {
      display: none;
      padding: 0 18px 18px 22px;
      color: #4B5563;
      background: #F7FAF8;
      border-left: 4px solid var(--primary);
    }

    .faq-item.open {
      border-color: rgba(18,184,134,.42);
      box-shadow: var(--shadow);
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .faq-item.open .faq-question span:last-child {
      transform: rotate(45deg);
      background: var(--primary-soft);
    }

    .feedback-box {
      padding: 26px;
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 24px;
      align-items: center;
    }

    .feedback-form {
      display: grid;
      gap: 12px;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .feedback-form input,
    .feedback-form textarea {
      padding: 12px 14px;
    }

    .feedback-form textarea {
      min-height: 108px;
      resize: vertical;
    }

    .cta {
      padding: 62px 0;
    }

    .cta-box {
      border-radius: var(--radius-lg);
      padding: 34px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 26px;
      align-items: center;
      color: #fff;
      background:
        linear-gradient(135deg, #0F766E, #12B886 55%, #7C3AED),
        repeating-linear-gradient(45deg, rgba(255,255,255,.08) 0 8px, transparent 8px 16px);
      box-shadow: var(--shadow-strong);
      overflow: hidden;
    }

    .cta-box h2 {
      color: #fff;
      margin-bottom: 8px;
    }

    .cta-box p {
      color: rgba(255,255,255,.86);
      max-width: 700px;
    }

    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .cta .btn-secondary {
      background: rgba(255,255,255,.12);
      color: #fff;
      border-color: rgba(255,255,255,.5);
    }

    .site-footer {
      background: var(--footer);
      color: rgba(255,255,255,.82);
      padding: 48px 0 22px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .9fr;
      gap: 34px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255,255,255,.14);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
      color: #fff;
      font-weight: 900;
      font-size: 18px;
    }

    .footer-brand .brand-mark {
      box-shadow: none;
    }

    .footer-title {
      color: #fff;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      color: rgba(255,255,255,.78);
      transition: color var(--ease);
    }

    .footer-links a:hover {
      color: #fff;
    }

    .footer-note {
      font-size: 14px;
      color: rgba(255,255,255,.72);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      padding-top: 22px;
      color: rgba(255,255,255,.62);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(100% - 48px, var(--container));
      }

      .hero-grid,
      .download-grid,
      .guide-grid,
      .faq-wrap,
      .feedback-box {
        grid-template-columns: 1fr;
      }

      .hero {
        padding-top: 54px;
      }

      .download-preview {
        max-width: 620px;
      }

      .quick-grid {
        grid-template-columns: repeat(3, 1fr);
      }

      .news-layout,
      .topic-layout {
        grid-template-columns: 1fr;
      }

      .topic-stack {
        grid-template-columns: 1fr 1fr;
      }

      .proof-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .faq-intro {
        position: static;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 32px, var(--container));
      }

      .nav-wrap {
        min-height: 66px;
      }

      .menu-toggle {
        display: block;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 74px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 18px;
        border: 1px solid var(--line);
        background: #fff;
        box-shadow: var(--shadow);
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        border-radius: 12px;
        padding: 12px 14px;
      }

      .nav-action .btn {
        display: none;
      }

      .section {
        padding: 64px 0;
      }

      .section-head {
        display: block;
      }

      .section-head .btn {
        margin-top: 16px;
      }

      .hero-points {
        grid-template-columns: 1fr;
      }

      .quick-grid {
        display: flex;
        overflow-x: auto;
        padding-bottom: 8px;
        scroll-snap-type: x proximity;
      }

      .quick-item {
        flex: 0 0 230px;
        scroll-snap-align: start;
      }

      .version-grid,
      .qr-row,
      .form-row,
      .mock-cards,
      .topic-stack,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .news-row {
        grid-template-columns: 72px 1fr;
      }

      .date-badge {
        min-height: 72px;
      }

      .cta-box {
        grid-template-columns: 1fr;
        padding: 26px;
      }

      .cta-actions {
        justify-content: flex-start;
      }

      .strip-inner {
        display: block;
        padding: 14px 0;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: min(100% - 32px, var(--container));
      }

      h1 {
        font-size: 31px;
      }

      .brand-name {
        font-size: 16px;
      }

      .hero {
        padding-top: 38px;
      }

      .hero-actions,
      .download-panel .hero-actions,
      .cta-actions {
        display: grid;
        grid-template-columns: 1fr;
      }

      .btn {
        width: 100%;
        white-space: normal;
        text-align: center;
      }

      .preview-body,
      .download-panel .preview-body,
      .feature-content,
      .topic-card,
      .feedback-box {
        padding: 20px;
      }

      .media-art {
        min-height: 210px;
      }

      .media-art::after {
        left: 22px;
        right: 22px;
        bottom: 22px;
        max-width: none;
        white-space: normal;
        border-radius: 14px;
      }

      .news-row {
        grid-template-columns: 1fr;
      }

      .date-badge {
        width: 84px;
      }

      .proof-grid {
        grid-template-columns: 1fr;
      }

      .copyright {
        display: block;
      }
    }

/* roulang page: category1 */
:root{--primary:#12B886;--primary-dark:#0CA678;--primary-soft:#E6FCF5;--accent:#7C3AED;--accent-soft:#F3E8FF;--warning:#F59E0B;--text:#1F2937;--muted:#6B7280;--soft-text:#8A949E;--bg:#F7FAF8;--surface:#fff;--line:#E5E7EB;--line-strong:#C7D2CF;--footer:#103B34;--radius:14px;--radius-lg:20px;--shadow:0 8px 24px rgba(17,24,39,.06);--shadow-strong:0 16px 40px rgba(18,184,134,.16);--container:1180px;--ease:.22s ease}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--text);background:linear-gradient(90deg,rgba(18,184,134,.04) 1px,transparent 1px),linear-gradient(rgba(18,184,134,.035) 1px,transparent 1px),var(--bg);background-size:28px 28px;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font:inherit;border:0;cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid rgba(18,184,134,.28);outline-offset:3px}.container{width:min(100% - 64px,var(--container));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,250,248,.93);backdrop-filter:blur(16px);border-bottom:1px solid rgba(199,210,207,.7)}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand,.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap}.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:900;box-shadow:0 10px 22px rgba(18,184,134,.18)}.brand-name{font-size:18px}.nav-links{display:flex;align-items:center;gap:6px}.nav-links a{padding:10px 14px;border-radius:999px;color:#405047;font-size:15px;transition:color var(--ease),background var(--ease)}.nav-links a:hover,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}.nav-action{display:flex;align-items:center;gap:12px}.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff}.menu-toggle span{display:block;width:18px;height:2px;margin:5px auto;border-radius:3px;background:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 18px;border-radius:999px;font-size:15px;font-weight:700;line-height:1.2;white-space:nowrap;transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease)}.btn svg{width:17px;height:17px;transition:transform var(--ease)}.btn-primary{color:#fff;background:var(--primary);box-shadow:0 10px 22px rgba(18,184,134,.18)}.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-strong)}.btn-primary:hover svg{transform:translateX(3px)}.btn-secondary{color:var(--text);background:#fff;border:1px solid var(--line-strong)}.btn-secondary:hover{color:var(--accent);border-color:var(--accent)}.btn:active{transform:translateY(1px)}
.page-hero{position:relative;padding:48px 0 42px;overflow:hidden}.page-hero:after{content:"";position:absolute;width:380px;height:380px;right:-80px;top:-130px;border-radius:50%;background:radial-gradient(circle,rgba(124,58,237,.12),transparent 68%);pointer-events:none}.crumbs{position:relative;z-index:1;display:flex;gap:9px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:18px}.crumbs span{color:#a2aca7}.hero-panel{position:relative;z-index:1;padding:34px 38px;border:1px solid rgba(18,184,134,.18);border-radius:var(--radius-lg);background:linear-gradient(118deg,#fff 0%,#f2fffa 70%,#fbf8ff 100%);box-shadow:var(--shadow)}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 11px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-weight:800;font-size:13px}.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--warning);box-shadow:0 0 0 4px rgba(245,158,11,.13)}h1,h2,h3,p{margin-top:0}.hero-panel h1{max-width:760px;margin:13px 0 12px;font-size:42px;line-height:1.25;letter-spacing:0}.hero-panel p{max-width:780px;margin-bottom:0;color:#4b5563;font-size:17px}.update-strip{position:relative;z-index:1;display:flex;align-items:center;gap:12px;margin-top:20px;padding:13px 16px;border-left:4px solid var(--warning);border-radius:10px;background:rgba(255,255,255,.8);font-size:14px;color:#4b5563}.update-strip strong{color:var(--text)}
.section{padding:46px 0 80px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:28px;align-items:start}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:20px}.section-heading h2{margin-bottom:0;font-size:29px;line-height:1.3}.section-heading p{margin:0;color:var(--muted);font-size:14px}.news-list{display:grid;gap:16px}.featured-card,.news-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease)}.featured-card:hover,.news-card:hover{transform:translateY(-2px);border-color:rgba(18,184,134,.48);box-shadow:0 14px 30px rgba(17,24,39,.08)}.featured-card{overflow:hidden;display:grid;grid-template-columns:42% 58%;min-height:236px}.visual{position:relative;overflow:hidden;background:linear-gradient(135deg,#123e38,#12b886)}.visual:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 75% 25%,rgba(255,255,255,.34) 0 4%,transparent 4.5%),linear-gradient(135deg,transparent 0 44%,rgba(255,255,255,.16) 44% 48%,transparent 48% 100%)}.visual:after{content:"B";position:absolute;right:28px;bottom:10px;color:rgba(255,255,255,.25);font-size:112px;font-weight:900;line-height:1}.featured-body{padding:24px}.meta{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-bottom:10px;font-size:13px;color:var(--muted)}.tag{display:inline-flex;align-items:center;padding:3px 9px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-weight:800}.tag.purple{color:var(--accent);background:var(--accent-soft)}.featured-body h3,.news-card h3{font-size:21px;line-height:1.42;margin-bottom:9px;transition:color var(--ease)}.featured-card:hover h3,.news-card:hover h3{color:var(--primary-dark)}.featured-body p,.news-card p{color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:14px}.read-link{display:inline-flex;align-items:center;gap:7px;color:var(--primary-dark);font-size:14px;font-weight:800}.read-link span{transition:transform var(--ease)}.read-link:hover span{transform:translateX(3px)}
.news-card{display:grid;grid-template-columns:170px minmax(0,1fr);gap:18px;padding:14px}.thumb{position:relative;min-height:128px;border-radius:10px;overflow:hidden;background:linear-gradient(145deg,#e6fcf5,#d9f5ed)}.thumb:before{content:"";position:absolute;width:105px;height:105px;left:31px;top:14px;border:13px solid rgba(18,184,134,.55);border-radius:26px;transform:rotate(-18deg)}.thumb:after{content:"";position:absolute;width:58px;height:8px;left:56px;top:65px;border-radius:99px;background:var(--accent);box-shadow:0 16px 0 rgba(124,58,237,.35)}.thumb.violet{background:linear-gradient(145deg,#f3e8ff,#e7f9f1)}.thumb.violet:before{border-color:rgba(124,58,237,.5);border-radius:50%;transform:none}.thumb.violet:after{background:var(--primary)}.thumb.amber{background:linear-gradient(145deg,#fff7e4,#e6fcf5)}.thumb.amber:before{border-color:rgba(245,158,11,.55);border-radius:14px;transform:rotate(12deg)}.news-body{padding:2px 4px 1px 0}.news-body h3{margin-bottom:7px;font-size:18px}.news-body p{margin-bottom:8px}.side-stack{display:grid;gap:16px}.side-card{padding:21px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.side-card h3{font-size:18px;line-height:1.4;margin-bottom:13px}.download-mini{position:relative;overflow:hidden;border-color:rgba(18,184,134,.32);background:linear-gradient(145deg,#fff,#effdf7)}.download-mini:after{content:"";position:absolute;width:150px;height:150px;right:-75px;top:-70px;border:20px solid rgba(18,184,134,.1);border-radius:50%}.app-row{position:relative;z-index:1;display:flex;gap:12px;align-items:center;margin-bottom:15px}.app-icon{width:48px;height:48px;flex:0 0 48px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:14px;font-size:20px;font-weight:900}.app-row strong{display:block;font-size:15px}.app-row small{display:block;color:var(--muted);font-size:12px}.download-mini .btn{position:relative;z-index:1;width:100%;margin-top:10px}.mini-note{position:relative;z-index:1;margin:12px 0 0;font-size:12px;color:var(--muted)}.hot-list{list-style:none;padding:0;margin:0}.hot-list li{display:flex;gap:11px;padding:11px 0;border-bottom:1px solid var(--line)}.hot-list li:last-child{border-bottom:0;padding-bottom:0}.rank{width:24px;height:24px;flex:0 0 24px;display:grid;place-items:center;border-radius:8px;background:var(--primary-soft);color:var(--primary-dark);font-weight:800;font-size:12px}.hot-list a{font-size:14px;line-height:1.55;transition:color var(--ease)}.hot-list a:hover{color:var(--primary-dark)}.topic-cloud{display:flex;gap:8px;flex-wrap:wrap}.topic-cloud a{padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:#526057;font-size:13px;transition:all var(--ease)}.topic-cloud a:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.pagination{display:flex;justify-content:center;gap:8px;margin-top:30px}.pagination a{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line-strong);border-radius:11px;background:#fff;color:#526057;font-weight:700;transition:all var(--ease)}.pagination a:hover{border-color:var(--primary);color:var(--primary-dark)}.pagination a.current{background:var(--primary);border-color:var(--primary);color:#fff}
.info-section{padding:0 0 82px}.info-box{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;padding:31px 36px;border-radius:var(--radius-lg);background:var(--footer);color:#fff;box-shadow:0 16px 40px rgba(16,59,52,.16)}.info-box h2{font-size:27px;line-height:1.35;margin-bottom:11px}.info-box p{margin-bottom:18px;color:rgba(255,255,255,.75)}.check-list{display:grid;gap:10px;align-content:center}.check-list div{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.08);color:rgba(255,255,255,.89);font-size:14px}.check{width:20px;height:20px;flex:0 0 20px;display:grid;place-items:center;border-radius:50%;background:rgba(18,184,134,.24);color:#74edc6;font-size:12px;font-weight:900}
.site-footer{padding:55px 0 20px;background:var(--footer);color:#fff}.footer-grid{display:grid;grid-template-columns:1.25fr .7fr 1fr;gap:50px;padding-bottom:34px}.footer-brand{font-size:18px;margin-bottom:12px}.footer-note{color:rgba(255,255,255,.7);font-size:14px;line-height:1.8;margin:0}.footer-title{margin-bottom:13px;font-size:15px;font-weight:800}.footer-links{display:grid;gap:8px}.footer-links a{width:max-content;color:rgba(255,255,255,.72);font-size:14px;transition:color var(--ease)}.footer-links a:hover{color:#7af0cb}.copyright{display:flex;justify-content:space-between;gap:16px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.54);font-size:12px}
@media(max-width:1024px){.content-grid{grid-template-columns:minmax(0,1fr) 290px}.hero-panel{padding:30px}.nav-links a{padding:9px 10px}.nav-action .btn{padding:10px 14px}.info-box{padding:29px}}
@media(max-width:768px){.container{width:min(100% - 32px,var(--container))}.nav-wrap{min-height:68px}.menu-toggle{display:block}.nav-action .btn{display:none}.nav-links{display:none;position:absolute;top:68px;left:16px;right:16px;padding:10px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{padding:11px 13px}.page-hero{padding:31px 0 28px}.hero-panel{padding:24px}.hero-panel h1{font-size:33px}.hero-panel p{font-size:16px}.update-strip{align-items:flex-start}.content-grid{grid-template-columns:1fr}.section{padding:38px 0 58px}.featured-card{grid-template-columns:1fr}.visual{min-height:170px}.news-card{grid-template-columns:135px minmax(0,1fr);gap:14px}.thumb{min-height:110px}.side-stack{grid-template-columns:repeat(2,minmax(0,1fr))}.side-card:last-child{grid-column:1/-1}.info-box{grid-template-columns:1fr;padding:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{flex-direction:column;gap:4px}}
@media(max-width:520px){.brand-name{font-size:16px}.brand-mark{width:34px;height:34px}.hero-panel{padding:21px 18px}.hero-panel h1{font-size:30px}.update-strip{font-size:13px;padding:12px}.section-heading{align-items:flex-start;flex-direction:column;gap:5px}.section-heading h2{font-size:25px}.featured-body{padding:19px}.featured-body h3{font-size:19px}.news-card{grid-template-columns:1fr;padding:12px}.thumb{min-height:145px}.news-body{padding:4px}.side-stack{grid-template-columns:1fr}.side-card:last-child{grid-column:auto}.info-box{padding:22px 18px}.info-box h2{font-size:24px}.footer-grid{grid-template-columns:1fr;gap:26px}.footer-grid>div:first-child{grid-column:auto}.btn{width:100%}.pagination a{width:37px;height:37px}}

/* roulang page: category3 */
:root {
      --primary:#12B886;--primary-dark:#0CA678;--primary-soft:#E6FCF5;
      --accent:#7C3AED;--accent-soft:#F3E8FF;--warning:#F59E0B;
      --text:#1F2937;--muted:#6B7280;--soft-text:#8A949E;
      --bg:#F7FAF8;--surface:#fff;--line:#E5E7EB;--line-strong:#C7D2CF;
      --footer:#103B34;--radius:14px;--radius-lg:20px;
      --shadow:0 8px 24px rgba(17,24,39,.06);
      --shadow-strong:0 16px 40px rgba(18,184,134,.16);
      --container:1180px;--ease:.22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--text);background:
      linear-gradient(90deg,rgba(18,184,134,.045) 1px,transparent 1px),
      linear-gradient(rgba(18,184,134,.04) 1px,transparent 1px),var(--bg);
      background-size:28px 28px;
      font-family:-apple-system,BlinkMacSystemFont,"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      font-size:16px;line-height:1.75;letter-spacing:0;overflow-x:hidden
    }
    a{color:inherit;text-decoration:none} img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer;background:none}
    button:focus-visible,a:focus-visible{outline:3px solid rgba(18,184,134,.28);outline-offset:3px}
    .container{width:min(calc(100% - 64px),var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,250,248,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(199,210,207,.7)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap}
    .brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:0 10px 22px rgba(18,184,134,.18)}
    .brand-name{font-size:18px;line-height:1.2}
    .nav-links{display:flex;align-items:center;gap:6px}
    .nav-links a{padding:10px 14px;border-radius:999px;color:#405047;font-size:15px;transition:color var(--ease),background var(--ease)}
    .nav-links a:hover,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
    .nav-action{display:flex;align-items:center;gap:12px}
    .menu-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--text)}
    .menu-toggle span{display:block;width:18px;height:2px;margin:5px auto;border-radius:2px;background:currentColor}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 18px;border-radius:999px;font-weight:700;font-size:15px;line-height:1.2;transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);white-space:nowrap}
    .btn-primary{color:#fff;background:var(--primary);box-shadow:0 10px 22px rgba(18,184,134,.18)}
    .btn-primary:hover{color:#fff;background:var(--primary-dark);box-shadow:var(--shadow-strong);transform:translateY(-2px)}
    .btn-secondary{color:var(--text);background:#fff;border:1px solid var(--line-strong)}
    .btn-secondary:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}
    .btn:active{transform:translateY(1px)}
    .section{padding:82px 0}.section-tight{padding:54px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:28px}
    .section-kicker{display:inline-flex;align-items:center;gap:8px;margin-bottom:10px;color:var(--primary-dark);font-weight:800;font-size:14px}
    .section-kicker:before{content:"";width:9px;height:9px;border-radius:50%;background:var(--warning);box-shadow:0 0 0 5px rgba(245,158,11,.12)}
    h1,h2,h3{margin:0;color:var(--text);line-height:1.25;letter-spacing:0}
    h1{font-size:clamp(32px,4vw,48px);max-width:760px}
    h2{font-size:clamp(25px,3vw,32px)}h3{font-size:20px}
    p{margin:0}.lead{color:#4B5563;font-size:17px;line-height:1.8}.muted{color:var(--muted)}
    .page-hero{padding:58px 0 42px;position:relative;overflow:hidden}
    .page-hero:after{content:"";position:absolute;right:4%;bottom:15px;width:180px;height:100px;opacity:.7;background:radial-gradient(circle,rgba(124,58,237,.22) 2px,transparent 3px);background-size:22px 22px}
    .breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:14px;margin-bottom:22px;position:relative;z-index:1}
    .breadcrumb a:hover{color:var(--primary-dark)}.breadcrumb span{color:#B2BFBA}
    .hero-copy{position:relative;z-index:1;max-width:820px}
    .hero-copy .lead{max-width:700px;margin-top:18px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .tag,.status{display:inline-flex;align-items:center;border-radius:999px;padding:5px 11px;font-size:13px;font-weight:700}
    .tag{color:var(--primary-dark);background:var(--primary-soft)}.status{color:var(--accent);background:var(--accent-soft)}
    .guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:30px;align-items:start}
    .guide-panel,.side-card,.faq-card,.cta-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow)}
    .guide-panel{padding:30px}
    .panel-head{display:flex;justify-content:space-between;align-items:start;gap:18px;padding-bottom:22px;border-bottom:1px solid var(--line)}
    .panel-head p{margin-top:7px;color:var(--muted);font-size:14px}
    .flow{position:relative;padding:26px 0 4px}
    .flow:before{content:"";position:absolute;left:21px;top:37px;bottom:35px;width:2px;background:linear-gradient(var(--primary),#D7EEE7)}
    .flow-item{display:grid;grid-template-columns:44px 1fr;gap:17px;position:relative;padding-bottom:29px}
    .flow-number{width:44px;height:44px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--primary);font-weight:800;box-shadow:0 0 0 7px var(--primary-soft);z-index:1}
    .flow-item:nth-child(even) .flow-number{background:var(--accent);box-shadow:0 0 0 7px var(--accent-soft)}
    .flow-content{padding-top:2px}.flow-content h3{font-size:18px;margin-bottom:5px}.flow-content p{color:var(--muted);font-size:15px;line-height:1.7}
    .check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
    .check{display:flex;gap:10px;align-items:flex-start;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#FCFEFD;color:#4B5563;font-size:14px}
    .check i{font-style:normal;color:var(--primary);font-weight:900;font-size:17px;line-height:1.3}
    .side-stack{display:grid;gap:18px}
    .side-card{padding:22px}.side-card h3{font-size:18px;margin-bottom:13px}
    .download-mini{border-color:#BDEBDE;overflow:hidden;position:relative}
    .download-mini:before{content:"";display:block;height:5px;background:linear-gradient(90deg,var(--primary),var(--accent));position:absolute;top:0;left:0;right:0}
    .app-symbol{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:#fff;font-size:22px;font-weight:900;background:linear-gradient(135deg,var(--primary),var(--accent));margin:7px 0 14px}
    .download-mini p{color:var(--muted);font-size:14px;line-height:1.65;margin-bottom:16px}
    .download-mini .btn{width:100%}
    .side-links{display:grid;gap:0}.side-links a{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px;color:#4B5563;display:flex;justify-content:space-between;gap:10px}
    .side-links a:last-child{border-bottom:0}.side-links a:hover{color:var(--primary-dark);padding-left:3px}
    .notice{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;background:#FFF9EC;border:1px solid #F9D98C;border-radius:14px;color:#76540C;font-size:14px;margin-top:24px}
    .notice strong{color:#8A5B00;white-space:nowrap}
    .compat{padding-top:70px}.compat-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:28px;align-items:stretch}
    .compat-copy{padding:30px 4px}.compat-copy .lead{margin-top:14px}
    .compat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:27px;box-shadow:var(--shadow)}
    .device-row{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 22px}
    .device{padding:9px 13px;border-radius:10px;background:var(--primary-soft);color:var(--primary-dark);font-size:14px;font-weight:700}
    .device:nth-child(2){background:var(--accent-soft);color:var(--accent)}
    .device:nth-child(3){background:#FFF5DC;color:#996708}
    .tip-list{display:grid;gap:12px}.tip-list li{list-style:none;display:flex;gap:10px;color:#4B5563;font-size:15px}.tip-list ul{padding:0;margin:0}
    .tip-list li:before{content:"";width:7px;height:7px;flex:0 0 7px;margin-top:10px;border-radius:50%;background:var(--primary)}
    .faq-section{padding-top:58px}.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .faq-card{padding:0;overflow:hidden;box-shadow:none}.faq-card summary{list-style:none;cursor:pointer;padding:19px 22px;font-weight:700;display:flex;justify-content:space-between;gap:20px;align-items:center}
    .faq-card summary::-webkit-details-marker{display:none}.faq-card summary:after{content:"+";font-size:24px;font-weight:400;color:var(--primary);line-height:1}
    .faq-card[open]{border-left:4px solid var(--primary);background:#fff}.faq-card[open] summary:after{content:"−";color:var(--accent)}
    .faq-answer{padding:0 22px 20px;color:#5B6470;font-size:14px;line-height:1.75}
    .cta-box{margin-top:62px;padding:32px 36px;display:flex;justify-content:space-between;align-items:center;gap:24px;background:linear-gradient(110deg,#E6FCF5,#fff 65%);border-color:#BDEBDE}
    .cta-box p{color:#5B6470;margin-top:7px;font-size:15px}.cta-actions{display:flex;gap:10px;flex-wrap:wrap}
    .site-footer{margin-top:84px;padding:52px 0 24px;background:var(--footer);color:#E8F5F0}
    .footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1.1fr;gap:42px}
    .footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800}.footer-brand .brand-mark{box-shadow:none}
    .footer-note{color:#B9D2CB;font-size:14px;line-height:1.8;margin-top:16px;max-width:410px}
    .footer-title{font-weight:800;margin-bottom:12px}.footer-links{display:grid;gap:8px;color:#B9D2CB;font-size:14px}.footer-links a:hover{color:#fff}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(232,245,240,.16);margin-top:35px;padding-top:20px;color:#9FC0B7;font-size:13px}
    @media(max-width:1024px){.container{width:min(calc(100% - 48px),var(--container))}.nav-action .btn{display:none}.guide-layout{grid-template-columns:1fr 280px}.hero-grid{grid-template-columns:1fr}.compat-grid{grid-template-columns:1fr}}
    @media(max-width:768px){
      .container{width:calc(100% - 32px)}.nav-wrap{min-height:68px}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:76px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
      .nav-links.open{display:grid}.nav-links a{padding:12px 14px;border-radius:10px}.brand-name{font-size:16px}
      .page-hero{padding:42px 0 28px}.section{padding:58px 0}.section-head{display:block}.guide-layout{grid-template-columns:1fr}.side-stack{grid-template-columns:repeat(2,1fr)}
      .guide-panel{padding:22px}.faq-grid{grid-template-columns:1fr}.cta-box{display:block;padding:26px 23px}.cta-actions{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-top:5px}
    }
    @media(max-width:520px){
      h1{font-size:33px}.lead{font-size:16px}.hero-meta{gap:7px}.guide-panel{padding:18px}.panel-head{display:block}
      .flow-item{grid-template-columns:38px 1fr;gap:13px}.flow:before{left:18px}.flow-number{width:38px;height:38px;font-size:14px}
      .check-list{grid-template-columns:1fr}.side-stack{grid-template-columns:1fr}.compat-card{padding:21px}.cta-actions .btn{width:100%}.footer-grid{grid-template-columns:1fr}
    }

/* roulang page: category2 */
:root{
 --primary:#12B886;
 --primary-dark:#0CA678;
 --primary-soft:#E6FCF5;
 --accent:#7C3AED;
 --accent-soft:#F3E8FF;
 --warning:#F59E0B;
 --text:#1F2937;
 --muted:#6B7280;
 --soft-text:#8A949E;
 --bg:#F7FAF8;
 --surface:#FFFFFF;
 --line:#E5E7EB;
 --line-strong:#C7D2CF;
 --footer:#103B34;
 --radius:14px;
 --radius-lg:20px;
 --shadow:0 8px 24px rgba(17,24,39,.06);
 --shadow-strong:0 16px 40px rgba(18,184,134,.16);
 --container:1180px;
 --ease:.22s ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:-apple-system,BlinkMacSystemFont,"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
 color:var(--text);
 background:
  linear-gradient(90deg, rgba(18,184,134,.045) 1px, transparent 1px),
  linear-gradient(rgba(18,184,134,.04) 1px, transparent 1px),
  var(--bg);
 background-size:28px 28px;
 line-height:1.75;
 letter-spacing:0;
 overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea{font:inherit}
button{border:0;background:none;cursor:pointer}
input,textarea{
 width:100%;
 border:1px solid var(--line);
 border-radius:12px;
 background:#fff;
 color:var(--text);
 outline:none;
 transition:border-color var(--ease),box-shadow var(--ease);
}
input:focus,textarea:focus,button:focus-visible,a:focus-visible{
 outline:3px solid rgba(18,184,134,.28);
 outline-offset:3px;
}
::selection{background:rgba(18,184,134,.18)}
.container{width:min(100% - 64px,var(--container));margin:0 auto}
.section{padding:78px 0}
.section-tight{padding:34px 0 66px}
.section-soft{
 background:linear-gradient(180deg, rgba(255,255,255,.84), rgba(230,252,245,.5));
 border-top:1px solid rgba(199,210,207,.6);
 border-bottom:1px solid rgba(199,210,207,.6);
}
.section-head{
 display:flex;
 align-items:flex-end;
 justify-content:space-between;
 gap:24px;
 margin-bottom:26px;
}
.section-kicker{
 display:inline-flex;
 align-items:center;
 gap:8px;
 margin-bottom:10px;
 color:var(--primary-dark);
 font-weight:800;
 font-size:14px;
 letter-spacing:0;
}
.section-kicker::before{
 content:"";
 width:9px;
 height:9px;
 border-radius:50%;
 background:var(--warning);
 box-shadow:0 0 0 5px rgba(245,158,11,.12);
}
.section-title{
 margin:0;
 font-size:30px;
 line-height:1.25;
 font-weight:800;
 color:var(--text);
 letter-spacing:0;
}
.section-lead{
 max-width:720px;
 margin:0;
 color:#4B5563;
 font-size:16px;
 line-height:1.8;
}
.site-header{
 position:sticky;
 top:0;
 z-index:50;
 background:rgba(247,250,248,.92);
 backdrop-filter:blur(16px);
 border-bottom:1px solid rgba(199,210,207,.7);
 transition:box-shadow var(--ease),background var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{
 background:rgba(255,255,255,.96);
 box-shadow:0 8px 24px rgba(15,23,42,.06);
}
.nav-wrap{
 min-height:76px;
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:22px;
}
.brand{
 display:inline-flex;
 align-items:center;
 gap:10px;
 font-weight:800;
 color:var(--text);
 white-space:nowrap;
}
.brand-mark{
 width:38px;
 height:38px;
 border-radius:12px;
 display:grid;
 place-items:center;
 color:#fff;
 font-weight:900;
 background:linear-gradient(135deg,var(--primary),var(--accent));
 box-shadow:0 10px 22px rgba(18,184,134,.18);
}
.brand-name{
 font-size:18px;
 line-height:1.15;
 letter-spacing:0;
}
.nav-links{
 display:flex;
 align-items:center;
 gap:6px;
}
.nav-links a{
 position:relative;
 padding:10px 14px;
 border-radius:999px;
 color:#405047;
 font-size:15px;
 transition:color var(--ease),background var(--ease),transform var(--ease);
}
.nav-links a:hover,
.nav-links a.active{
 color:var(--primary-dark);
 background:var(--primary-soft);
}
.menu-toggle{
 display:none;
 width:42px;
 height:42px;
 border-radius:12px;
 border:1px solid var(--line);
 background:#fff;
 color:var(--text);
}
.menu-toggle span{
 display:block;
 width:18px;
 height:2px;
 margin:4px auto;
 border-radius:2px;
 background:currentColor;
 transition:transform var(--ease),opacity var(--ease);
}
.hero{
 position:relative;
 padding:34px 0 12px;
 overflow:hidden;
}
.hero::after{
 content:"";
 position:absolute;
 inset:auto -8% 34px auto;
 width:46%;
 height:44%;
 background:
  radial-gradient(circle at 12px 12px, rgba(124,58,237,.15) 2px, transparent 3px);
 background-size:24px 24px;
 opacity:.5;
 pointer-events:none;
}
.breadcrumbs{
 display:flex;
 flex-wrap:wrap;
 align-items:center;
 gap:8px;
 margin-bottom:18px;
 color:#6B7280;
 font-size:14px;
}
.breadcrumbs span{color:#B3BBB4}
.hero-grid{
 position:relative;
 z-index:1;
 display:grid;
 grid-template-columns:minmax(0,1.02fr) minmax(340px,.98fr);
 gap:30px;
 align-items:start;
}
.hero-copy{
 padding-top:8px;
}
.hero-pills{
 display:flex;
 flex-wrap:wrap;
 gap:10px;
 margin-bottom:16px;
}
.pill{
 display:inline-flex;
 align-items:center;
 gap:8px;
 min-height:34px;
 padding:7px 12px;
 border-radius:999px;
 border:1px solid var(--line);
 background:rgba(255,255,255,.88);
 color:#41504A;
 font-size:13px;
 font-weight:700;
 letter-spacing:0;
}
.pill::before{
 content:"";
 width:8px;
 height:8px;
 border-radius:999px;
 background:var(--primary);
 box-shadow:0 0 0 4px rgba(18,184,134,.12);
}
.pill--accent::before{background:var(--accent);box-shadow:0 0 0 4px rgba(124,58,237,.12)}
.pill--warning::before{background:var(--warning);box-shadow:0 0 0 4px rgba(245,158,11,.12)}
.hero-title{
 margin:0 0 14px;
 font-size:46px;
 line-height:1.18;
 letter-spacing:0;
 font-weight:900;
 color:var(--text);
}
.hero-lead{
 margin:0;
 max-width:700px;
 color:#4B5563;
 font-size:17px;
 line-height:1.85;
}
.hero-actions{
 display:flex;
 flex-wrap:wrap;
 gap:12px;
 margin:24px 0 18px;
}
.site-btn{
 display:inline-flex;
 align-items:center;
 justify-content:center;
 gap:8px;
 min-height:46px;
 padding:11px 18px;
 border-radius:999px;
 font-weight:800;
 font-size:15px;
 line-height:1.2;
 white-space:nowrap;
 transition:transform var(--ease),background var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
}
.site-btn svg{width:17px;height:17px;transition:transform var(--ease)}
.site-btn:active{transform:translateY(1px)}
.site-btn-primary{
 color:#fff;
 background:var(--primary);
 box-shadow:0 10px 22px rgba(18,184,134,.18);
}
.site-btn-primary:hover{
 background:var(--primary-dark);
 box-shadow:var(--shadow-strong);
}
.site-btn-primary:hover svg{transform:translateX(3px)}
.site-btn-secondary{
 color:var(--text);
 background:rgba(255,255,255,.84);
 border:1px solid var(--line-strong);
}
.site-btn-secondary:hover{
 color:var(--accent);
 border-color:var(--accent);
 background:#fff;
}
.site-btn-outline{
 color:var(--text);
 background:#fff;
 border:1px solid var(--line);
}
.site-btn-outline:hover{
 color:var(--accent);
 border-color:var(--accent);
 background:#fff;
}
.hero-notes{
 display:flex;
 flex-wrap:wrap;
 gap:10px 14px;
 margin:16px 0 18px;
 color:#5B6762;
 font-size:14px;
}
.hero-notes span{
 display:inline-flex;
 align-items:center;
 gap:8px;
}
.hero-notes span::before{
 content:"";
 width:7px;
 height:7px;
 border-radius:50%;
 background:var(--primary);
}
.update-strip{
 display:flex;
 flex-wrap:wrap;
 align-items:center;
 gap:12px;
 padding:14px 16px;
 border:1px solid rgba(18,184,134,.16);
 border-left:4px solid var(--primary);
 border-radius:16px;
 background:rgba(255,255,255,.82);
 box-shadow:var(--shadow);
}
.update-strip .tag{
 display:inline-flex;
 align-items:center;
 padding:4px 10px;
 border-radius:999px;
 background:var(--primary-soft);
 color:var(--primary-dark);
 font-size:12px;
 font-weight:800;
}
.update-strip strong{font-weight:800;color:var(--text)}
.download-panel{
 position:relative;
 border:1px solid rgba(18,184,134,.12);
 border-radius:20px;
 background:var(--surface);
 padding:22px;
 box-shadow:var(--shadow-strong);
 overflow:hidden;
}
.download-panel::before{
 content:"";
 position:absolute;
 inset:0 auto auto 0;
 width:100%;
 height:4px;
 background:linear-gradient(90deg,var(--primary),var(--accent),var(--warning));
}
.panel-head{
 display:flex;
 align-items:flex-start;
 justify-content:space-between;
 gap:16px;
 margin-bottom:16px;
}
.panel-kicker{
 display:inline-flex;
 margin-bottom:8px;
 color:var(--primary-dark);
 font-weight:800;
 font-size:13px;
 letter-spacing:0;
}
.panel-title{
 margin:0;
 font-size:24px;
 line-height:1.25;
 font-weight:900;
 color:var(--text);
}
.version-badge{
 padding:8px 12px;
 border-radius:999px;
 background:var(--accent-soft);
 color:var(--accent);
 font-size:13px;
 font-weight:800;
 white-space:nowrap;
}
.panel-tabs{
 display:grid;
 grid-template-columns:repeat(3,minmax(0,1fr));
 gap:8px;
 margin-bottom:16px;
}
.panel-tabs button{
 min-height:44px;
 border:1px solid var(--line);
 border-radius:12px;
 background:#fff;
 color:#44514B;
 font-size:14px;
 font-weight:800;
 transition:color var(--ease),border-color var(--ease),background var(--ease),transform var(--ease);
}
.panel-tabs button:hover{
 border-color:var(--accent);
 color:var(--accent);
}
.panel-tabs button.active{
 border-color:rgba(18,184,134,.22);
 background:var(--primary-soft);
 color:var(--primary-dark);
}
.platform-detail{display:none}
.platform-detail.active{display:block}
.platform-copy{
 display:grid;
 gap:12px;
}
.meta-grid{
 display:grid;
 grid-template-columns:repeat(2,minmax(0,1fr));
 gap:12px;
}
.meta-item{
 padding:12px 14px;
 border:1px solid var(--line);
 border-radius:14px;
 background:#fff;
}
.meta-item span{
 display:block;
 color:var(--muted);
 font-size:12px;
 margin-bottom:4px;
}
.meta-item strong{
 display:block;
 font-size:16px;
 color:var(--text);
 font-weight:800;
}
.panel-actions{
 display:grid;
 grid-template-columns:repeat(2,minmax(0,1fr));
 gap:10px;
 margin:16px 0 18px;
}
.panel-visual{
 display:grid;
 grid-template-columns:128px minmax(0,1fr);
 gap:14px;
 align-items:stretch;
}
.qr-box{
 position:relative;
 min-height:150px;
 border:1px dashed #C8D5D0;
 border-radius:16px;
 background:
  linear-gradient(135deg, rgba(18,184,134,.08), rgba(124,58,237,.05)),
  #F8FBF9;
 padding:12px;
 overflow:hidden;
}
.qr-box::before,
.qr-box::after{
 content:"";
 position:absolute;
 inset:auto;
 width:26px;
 height:26px;
 border:3px solid rgba(18,184,134,.65);
 border-right:none;
 border-bottom:none;
 border-radius:4px 0 0 0;
}
.qr-box::before{top:12px;left:12px}
.qr-box::after{right:12px;bottom:12px;transform:rotate(180deg)}
.qr-grid{
 position:absolute;
 inset:50%;
 width:78px;
 height:78px;
 transform:translate(-50%,-50%);
 background:
  linear-gradient(90deg, rgba(31,41,55,.16) 1px, transparent 1px),
  linear-gradient(rgba(31,41,55,.16) 1px, transparent 1px);
 background-size:11px 11px;
 border:8px solid #fff;
 box-shadow:0 0 0 1px rgba(18,184,134,.12);
}
.qr-caption{
 position:absolute;
 left:12px;
 right:12px;
 bottom:12px;
 font-size:12px;
 color:#5A6762;
 line-height:1.5;
}
.panel-notice{
 display:grid;
 gap:10px;
 padding:8px 0 0;
}
.notice-line{
 display:flex;
 align-items:flex-start;
 gap:9px;
 color:#4B5563;
 font-size:14px;
 line-height:1.65;
}
.notice-line .dot{
 flex:0 0 auto;
 width:18px;
 height:18px;
 border-radius:50%;
 display:grid;
 place-items:center;
 margin-top:2px;
 background:var(--primary-soft);
 color:var(--primary-dark);
 font-size:12px;
 font-weight:900;
}
.notice-line em{
 color:var(--accent);
 font-style:normal;
 font-weight:800;
}
.check-grid{
 display:grid;
 grid-template-columns:repeat(5,minmax(0,1fr));
 gap:14px;
}
.check-item{
 min-height:100%;
 padding:18px;
 border-radius:14px;
 border:1px solid var(--line);
 background:rgba(255,255,255,.9);
 box-shadow:var(--shadow);
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.check-item:hover{
 transform:translateY(-2px);
 border-color:rgba(18,184,134,.25);
 box-shadow:0 10px 26px rgba(18,184,134,.09);
}
.check-icon{
 width:34px;
 height:34px;
 display:grid;
 place-items:center;
 margin-bottom:12px;
 border-radius:11px;
 background:var(--primary-soft);
 color:var(--primary-dark);
 font-weight:900;
}
.check-item h3{
 margin:0 0 8px;
 font-size:18px;
 line-height:1.35;
 font-weight:800;
}
.check-item p{
 margin:0;
 color:#4B5563;
 font-size:14px;
 line-height:1.75;
}
.content-grid{
 display:grid;
 grid-template-columns:minmax(0,1.45fr) minmax(300px,.8fr);
 gap:28px;
 align-items:start;
}
.article-stack{
 display:grid;
 gap:16px;
}
.feature-row{
 display:grid;
 grid-template-columns:190px minmax(0,1fr);
 gap:18px;
 padding:16px;
 border-radius:16px;
 border:1px solid var(--line);
 background:rgba(255,255,255,.96);
 box-shadow:var(--shadow);
 transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.feature-row:hover{
 transform:translateY(-2px);
 border-color:rgba(18,184,134,.2);
 box-shadow:0 10px 26px rgba(17,24,39,.08);
}
.feature-thumb{
 position:relative;
 min-height:128px;
 border-radius:14px;
 overflow:hidden;
 background:
  linear-gradient(135deg, rgba(18,184,134,.95), rgba(124,58,237,.9));
}
.feature-thumb::before{
 content:"";
 position:absolute;
 inset:0;
 background:
  linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px),
  linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px);
 background-size:18px 18px;
 opacity:.5;
}
.feature-thumb::after{
 content:"";
 position:absolute;
 inset:auto 12px 12px 12px;
 height:38px;
 border-radius:11px;
 background:rgba(255,255,255,.16);
 border:1px solid rgba(255,255,255,.25);
 box-shadow:0 8px 20px rgba(0,0,0,.08);
}
.feature-thumb.thumb-b{background:linear-gradient(135deg, rgba(124,58,237,.96), rgba(18,184,134,.88))}
.feature-thumb.thumb-c{background:linear-gradient(135deg, rgba(18,184,134,.96), rgba(245,158,11,.88))}
.feature-thumb.thumb-d{background:linear-gradient(135deg, rgba(245,158,11,.94), rgba(124,58,237,.88))}
.feature-badge{
 position:absolute;
 top:12px;
 left:12px;
 padding:5px 10px;
 border-radius:999px;
 background:rgba(255,255,255,.2);
 border:1px solid rgba(255,255,255,.28);
 color:#fff;
 font-size:12px;
 font-weight:800;
 backdrop-filter:blur(8px);
}
.feature-copy h3{
 margin:0 0 10px;
 font-size:21px;
 line-height:1.3;
 font-weight:900;
 color:var(--text);
}
.feature-copy p{
 margin:0 0 12px;
 color:#4B5563;
 font-size:15px;
 line-height:1.8;
}
.feature-meta{
 display:flex;
 flex-wrap:wrap;
 gap:10px;
 color:#6A7470;
 font-size:13px;
}
.feature-meta span{
 display:inline-flex;
 align-items:center;
 gap:6px;
 padding:6px 10px;
 border-radius:999px;
 background:#F4F8F6;
 border:1px solid #E3ECE7;
}
.sidebar{
 display:grid;
 gap:16px;
 position:sticky;
 top:96px;
}
.sidebar-card{
 padding:20px;
 border-radius:16px;
 border:1px solid var(--line);
 background:rgba(255,255,255,.96);
 box-shadow:var(--shadow);
}
.sidebar-title{
 margin:0 0 14px;
 font-size:18px;
 line-height:1.35;
 font-weight:900;
 color:var(--text);
}
.sidebar-note{
 margin:0;
 color:#4B5563;
 font-size:14px;
 line-height:1.75;
}
.sidebar-actions{
 display:grid;
 gap:10px;
 margin-top:14px;
}
.sidebar-mini-actions{
 display:grid;
 grid-template-columns:1fr 1fr;
 gap:10px;
}
.sidebar-list{
 display:grid;
 gap:12px;
}
.sidebar-list a{
 display:flex;
 align-items:flex-start;
 justify-content:space-between;
 gap:14px;
 padding:12px 0;
 border-bottom:1px solid #EEF2EF;
 color:#2F3A34;
 transition:color var(--ease),transform var(--ease);
}
.sidebar-list a:last-child{border-bottom:0;padding-bottom:0}
.sidebar-list a:hover{color:var(--primary-dark);transform:translateX(2px)}
.sidebar-list strong{
 display:block;
 font-size:15px;
 line-height:1.55;
 font-weight:800;
}
.sidebar-list span{
 display:block;
 color:var(--muted);
 font-size:12px;
 white-space:nowrap;
}
.tag-cloud{
 display:flex;
 flex-wrap:wrap;
 gap:10px;
}
.tag-cloud a{
 display:inline-flex;
 align-items:center;
 min-height:34px;
 padding:6px 12px;
 border-radius:999px;
 background:#F5FBF8;
 border:1px solid #DDEAE3;
 color:#3D4A45;
 font-size:13px;
 font-weight:700;
 transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.tag-cloud a:hover{
 border-color:var(--accent);
 color:var(--accent);
 background:#fff;
}
.mini-faq{
 border-left:4px solid var(--primary);
 background:var(--primary-soft);
 padding:14px 14px 14px 16px;
 border-radius:14px;
}
.mini-faq strong{
 display:block;
 margin-bottom:6px;
 color:var(--text);
 font-size:15px;
}
.mini-faq p{
 margin:0;
 color:#4B5563;
 font-size:13px;
 line-height:1.75;
}
.guide-grid{
 display:grid;
 grid-template-columns:minmax(0,.95fr) minmax(300px,1.05fr);
 gap:28px;
 align-items:start;
}
.timeline{
 display:grid;
 gap:14px;
}
.timeline-item{
 display:grid;
 grid-template-columns:44px minmax(0,1fr);
 gap:14px;
 align-items:start;
 padding:14px 0;
 border-bottom:1px solid #E8EEEA;
}
.timeline-item:last-child{border-bottom:0;padding-bottom:0}
.timeline-index{
 width:44px;
 height:44px;
 border-radius:14px;
 display:grid;
 place-items:center;
 background:var(--primary-soft);
 color:var(--primary-dark);
 font-weight:900;
 box-shadow:inset 0 0 0 1px rgba(18,184,134,.12);
}
.timeline-item h3{
 margin:0 0 6px;
 font-size:18px;
 line-height:1.35;
 font-weight:800;
}
.timeline-item p{
 margin:0;
 color:#4B5563;
 font-size:14px;
 line-height:1.78;
}
.browser-preview{
 border-radius:20px;
 border:1px solid var(--line);
 background:#fff;
 box-shadow:var(--shadow);
 overflow:hidden;
}
.browser-top{
 display:flex;
 align-items:center;
 gap:8px;
 padding:14px 16px;
 background:#F6FAF8;
 border-bottom:1px solid #E4ECE8;
}
.browser-dot{
 width:10px;
 height:10px;
 border-radius:50%;
 background:#D3DAD6;
}
.browser-address{
 flex:1;
 min-height:34px;
 display:flex;
 align-items:center;
 padding:0 12px;
 border-radius:10px;
 background:#fff;
 border:1px solid #E1E7E4;
 color:#66706B;
 font-size:13px;
 overflow:hidden;
 white-space:nowrap;
 text-overflow:ellipsis;
}
.browser-body{
 padding:18px;
 display:grid;
 gap:12px;
}
.browser-banner{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:12px;
 padding:14px;
 border-radius:16px;
 background:linear-gradient(135deg, rgba(18,184,134,.1), rgba(124,58,237,.08));
 border:1px solid rgba(18,184,134,.14);
}
.browser-banner strong{
 display:block;
 font-size:16px;
 line-height:1.4;
}
.browser-banner span{
 color:#51605A;
 font-size:13px;
}
.browser-rows{
 display:grid;
 gap:10px;
}
.browser-row{
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:10px;
 padding:12px 14px;
 border-radius:14px;
 border:1px solid #E7EEEA;
 background:#FAFCFB;
}
.browser-row strong{
 font-size:14px;
 color:#32403B;
}
.browser-row span{
 color:var(--muted);
 font-size:13px;
}
.browser-state{
 display:flex;
 flex-wrap:wrap;
 gap:8px;
}
.browser-state .pill{background:#fff}
.faq-list{
 display:grid;
 gap:12px;
}
.faq-item{
 border-radius:14px;
 border:1px solid var(--line);
 background:#fff;
 overflow:hidden;
 box-shadow:var(--shadow);
}
.faq-q{
 width:100%;
 min-height:60px;
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:14px;
 padding:14px 18px;
 background:#fff;
 color:var(--text);
 text-align:left;
 transition:background var(--ease),color var(--ease);
}
.faq-q strong{
 display:block;
 font-size:16px;
 line-height:1.5;
 font-weight:800;
}
.faq-q .icon{
 flex:0 0 auto;
 width:28px;
 height:28px;
 border-radius:50%;
 display:grid;
 place-items:center;
 color:var(--primary-dark);
 background:var(--primary-soft);
 font-size:18px;
 font-weight:900;
 transition:transform var(--ease),background var(--ease),color var(--ease);
}
.faq-a{
 max-height:0;
 overflow:hidden;
 background:#F7FAF8;
 border-top:1px solid #EDF2EF;
 transition:max-height var(--ease),padding var(--ease);
}
.faq-a > div{
 padding:0 18px 16px;
 color:#4B5563;
 font-size:14px;
 line-height:1.8;
}
.faq-item.open .faq-a{
 max-height:220px;
 padding-top:0;
}
.faq-item.open .faq-q .icon{
 transform:rotate(45deg);
 background:var(--accent-soft);
 color:var(--accent);
}
.faq-item.open{
 border-left:4px solid var(--primary);
}
.pager{
 display:flex;
 flex-wrap:wrap;
 justify-content:center;
 align-items:center;
 gap:8px;
 margin-top:22px;
}
.pager a,.pager span{
 min-width:38px;
 height:38px;
 padding:0 12px;
 display:inline-flex;
 align-items:center;
 justify-content:center;
 border-radius:999px;
 border:1px solid var(--line);
 background:#fff;
 color:#41504A;
 font-size:14px;
 font-weight:700;
 transition:color var(--ease),background var(--ease),border-color var(--ease),transform var(--ease);
}
.pager a:hover{
 border-color:var(--primary);
 color:var(--primary-dark);
 background:var(--primary-soft);
 transform:translateY(-1px);
}
.pager .active{
 background:var(--primary);
 border-color:var(--primary);
 color:#fff;
}
.cta-band{
 padding:26px;
 border-radius:20px;
 border:1px solid rgba(18,184,134,.16);
 background:linear-gradient(135deg, rgba(18,184,134,.12), rgba(124,58,237,.08));
 box-shadow:var(--shadow);
 display:flex;
 align-items:center;
 justify-content:space-between;
 gap:20px;
}
.cta-copy h2{
 margin:0 0 8px;
 font-size:28px;
 line-height:1.25;
 font-weight:900;
}
.cta-copy p{
 margin:0;
 color:#4B5563;
 font-size:15px;
 line-height:1.8;
 max-width:680px;
}
.cta-actions{
 display:flex;
 flex-wrap:wrap;
 gap:10px;
}
.site-footer{
 background:var(--footer);
 color:#E6F3EF;
 padding:46px 0 20px;
 margin-top:0;
}
.footer-grid{
 display:grid;
 grid-template-columns:1.2fr .8fr 1fr;
 gap:30px;
 align-items:start;
}
.footer-brand{
 display:inline-flex;
 align-items:center;
 gap:10px;
 font-weight:800;
 font-size:18px;
 margin-bottom:14px;
}
.footer-brand .brand-mark{
 width:36px;
 height:36px;
 border-radius:12px;
 box-shadow:none;
 background:linear-gradient(135deg,var(--primary),var(--accent));
}
.footer-title{
 margin:0 0 14px;
 color:#FFFFFF;
 font-weight:800;
 font-size:16px;
}
.footer-links{
 display:grid;
 gap:10px;
}
.footer-links a{
 color:#D5E7E2;
 transition:color var(--ease),transform var(--ease);
}
.footer-links a:hover{
 color:#fff;
 transform:translateX(2px);
}
.footer-note{
 margin:0;
 color:#C6D9D3;
 font-size:14px;
 line-height:1.85;
}
.copyright{
 display:flex;
 flex-wrap:wrap;
 justify-content:space-between;
 gap:12px;
 padding-top:18px;
 margin-top:24px;
 border-top:1px solid rgba(255,255,255,.12);
 color:#C7D8D3;
 font-size:13px;
}
.copyright span{letter-spacing:0}
.muted{color:var(--muted)}
.sr-only{
 position:absolute!important;
 width:1px!important;
 height:1px!important;
 padding:0!important;
 margin:-1px!important;
 overflow:hidden!important;
 clip:rect(0,0,0,0)!important;
 white-space:nowrap!important;
 border:0!important;
}
[id]{scroll-margin-top:96px}
@media (max-width: 1199px){
 .hero-grid,
 .content-grid,
 .guide-grid,
 .footer-grid{grid-template-columns:1fr}
 .sidebar{position:static}
 .check-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
 .section-title{font-size:28px}
}
@media (max-width: 1024px){
 .hero{padding-top:28px}
 .hero-title{font-size:40px}
 .feature-row{grid-template-columns:170px minmax(0,1fr)}
}
@media (max-width: 768px){
 .container{width:min(100% - 32px,var(--container))}
 .nav-wrap{min-height:72px}
 .menu-toggle{display:inline-grid;place-items:center}
 .nav-links{
  display:none;
  position:absolute;
  top:calc(100% + 10px);
  left:16px;
  right:16px;
  flex-direction:column;
  align-items:stretch;
  gap:6px;
  padding:12px;
  border-radius:18px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.98);
  box-shadow:var(--shadow);
 }
 .site-header.nav-open .nav-links{display:flex}
 .nav-links a{width:100%;padding:12px 14px}
 .hero-grid{gap:20px}
 .hero-title{font-size:34px}
 .section{padding:62px 0}
 .section-head{flex-direction:column;align-items:flex-start}
 .check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .content-grid,.guide-grid,.footer-grid{gap:20px}
 .feature-row{grid-template-columns:1fr}
 .feature-thumb{min-height:160px}
 .panel-actions,.meta-grid,.panel-tabs{grid-template-columns:1fr}
 .panel-visual{grid-template-columns:1fr}
 .cta-band{flex-direction:column;align-items:flex-start}
}
@media (max-width: 520px){
 .container{width:min(100% - 24px,var(--container))}
 .hero{padding-top:24px}
 .hero-title{font-size:30px}
 .hero-lead,.section-lead,.cta-copy p{font-size:15px}
 .hero-actions,.panel-actions,.cta-actions{grid-template-columns:1fr;display:grid;width:100%}
 .site-btn{width:100%}
 .check-grid{grid-template-columns:1fr}
 .timeline-item{grid-template-columns:36px minmax(0,1fr)}
 .timeline-index{width:36px;height:36px;border-radius:12px}
 .faq-q{min-height:56px;padding:14px 14px}
 .faq-q strong{font-size:15px}
 .panel-title{font-size:22px}
 .browser-banner{flex-direction:column;align-items:flex-start}
 .copyright{flex-direction:column}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}