/* roulang page: index */
:root {
      --color-bg: #f7f5ef;
      --color-surface: #ffffff;
      --color-surface-soft: #fbfaf6;
      --color-text: #161513;
      --color-muted: #6f6b62;
      --color-faint: #9a9489;
      --color-primary: #20201d;
      --color-primary-2: #3b3328;
      --color-accent: #b9824b;
      --color-accent-2: #e8c89d;
      --color-green: #4f7c5a;
      --color-red: #b55d4a;
      --color-border: rgba(32, 32, 29, .12);
      --color-border-strong: rgba(32, 32, 29, .22);
      --shadow-sm: 0 8px 20px rgba(41, 36, 28, .06);
      --shadow-md: 0 18px 45px rgba(41, 36, 28, .11);
      --shadow-lg: 0 28px 80px rgba(41, 36, 28, .16);
      --radius-xs: 10px;
      --radius-sm: 14px;
      --radius-md: 22px;
      --radius-lg: 32px;
      --radius-xl: 44px;
      --container: 1180px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      --ease: cubic-bezier(.22, .8, .22, 1);
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family: var(--font-sans);
      color: var(--color-text);
      background:
        radial-gradient(circle at 8% 0%, rgba(232, 200, 157, .32), transparent 33%),
        radial-gradient(circle at 92% 10%, rgba(79, 124, 90, .13), transparent 28%),
        linear-gradient(180deg, #fbfaf6 0%, var(--color-bg) 42%, #f2efe7 100%);
      line-height: 1.72;
      letter-spacing: .01em;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
    }

    a:hover,
    a:focus {
      color: var(--color-accent);
    }

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

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    input,
    textarea {
      width: 100%;
      border: 1px solid var(--color-border);
      background: rgba(255, 255, 255, .88);
      color: var(--color-text);
      border-radius: 14px;
      padding: 13px 14px;
      outline: none;
      transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
    }

    input::placeholder,
    textarea::placeholder {
      color: var(--color-faint);
    }

    input:focus,
    textarea:focus,
    select:focus,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(185, 130, 75, .22);
      outline-offset: 3px;
      border-color: rgba(185, 130, 75, .58);
      box-shadow: 0 0 0 4px rgba(185, 130, 75, .1);
    }

    .container {
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 80;
      background: rgba(251, 250, 246, .86);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(32, 32, 29, .08);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: var(--color-text);
      min-width: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      font-weight: 900;
      letter-spacing: -.08em;
      background:
        linear-gradient(135deg, #1f1d19 0%, #4a3928 54%, #b9824b 100%);
      box-shadow: 0 14px 30px rgba(34, 28, 20, .18);
      flex: 0 0 auto;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 1px;
      min-width: 0;
    }

    .brand-name {
      font-size: 17px;
      line-height: 1.2;
      font-weight: 850;
      letter-spacing: -.02em;
      white-space: nowrap;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--color-muted);
      white-space: nowrap;
    }

    .nav-tools {
      display: flex;
      align-items: center;
      gap: 12px;
      flex: 1;
      justify-content: flex-end;
      min-width: 0;
    }

    .search-box {
      width: min(410px, 42vw);
      position: relative;
      flex: 0 1 410px;
    }

    .search-box input {
      padding-left: 42px;
      height: 46px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .72);
    }

    .search-icon {
      position: absolute;
      left: 15px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--color-muted);
      pointer-events: none;
      font-size: 17px;
    }

    .header-cta {
      white-space: nowrap;
    }

    .channel-bar {
      border-top: 1px solid rgba(32, 32, 29, .06);
      background: rgba(255, 255, 255, .35);
    }

    .channel-inner {
      min-height: 52px;
      display: flex;
      align-items: center;
      gap: 10px;
      overflow-x: auto;
      scrollbar-width: thin;
      scrollbar-color: rgba(185, 130, 75, .45) transparent;
      padding: 9px 0;
    }

    .channel-tab {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      border: 1px solid var(--color-border);
      background: rgba(255, 255, 255, .72);
      color: var(--color-muted);
      padding: 9px 16px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 750;
      white-space: nowrap;
    }

    .channel-tab:hover {
      border-color: rgba(185, 130, 75, .44);
      background: #fff;
      transform: translateY(-1px);
      color: var(--color-text);
    }

    .channel-tab.is-active {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
      box-shadow: 0 10px 22px rgba(32, 32, 29, .16);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      border-radius: 999px;
      padding: 12px 20px;
      border: 1px solid transparent;
      font-weight: 800;
      line-height: 1;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
      user-select: none;
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn:active {
      transform: translateY(0);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-2) 100%);
      box-shadow: 0 16px 34px rgba(32, 32, 29, .2);
    }

    .btn-primary:hover {
      color: #fff;
      box-shadow: 0 22px 42px rgba(32, 32, 29, .24);
    }

    .btn-accent {
      color: #231b12;
      background: linear-gradient(135deg, #e9c08c, #b9824b);
      box-shadow: 0 16px 34px rgba(185, 130, 75, .26);
    }

    .btn-accent:hover {
      color: #15120e;
      box-shadow: 0 22px 42px rgba(185, 130, 75, .32);
    }

    .btn-ghost {
      color: var(--color-text);
      background: rgba(255, 255, 255, .68);
      border-color: var(--color-border);
    }

    .btn-ghost:hover {
      color: var(--color-text);
      background: #fff;
      border-color: rgba(185, 130, 75, .45);
      box-shadow: var(--shadow-sm);
    }

    .badge,
    .tag {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      width: fit-content;
      border-radius: 999px;
      border: 1px solid rgba(185, 130, 75, .26);
      background: rgba(232, 200, 157, .18);
      color: #7a4f25;
      padding: 7px 12px;
      font-size: 12px;
      font-weight: 850;
      letter-spacing: .04em;
    }

    .section {
      padding: 84px 0;
      position: relative;
    }

    .section-tight {
      padding: 64px 0;
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(260px, .72fr);
      gap: 28px;
      align-items: end;
      margin-bottom: 32px;
    }

    .section-kicker {
      display: inline-flex;
      color: var(--color-accent);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: .1em;
      margin-bottom: 12px;
    }

    .section-title {
      margin: 0;
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.12;
      letter-spacing: -.055em;
      font-weight: 920;
    }

    .section-desc {
      margin: 0;
      color: var(--color-muted);
      font-size: 16px;
    }

    .hero {
      padding: 54px 0 74px;
    }

    .hero-board {
      border: 1px solid rgba(32, 32, 29, .1);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(120deg, rgba(255, 255, 255, .94) 0%, rgba(255, 255, 255, .78) 54%, rgba(232, 200, 157, .2) 100%);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
      position: relative;
    }

    .hero-board::before {
      content: "";
      position: absolute;
      inset: 0;
      pointer-events: none;
      background:
        linear-gradient(90deg, rgba(32, 32, 29, .04) 1px, transparent 1px),
        linear-gradient(180deg, rgba(32, 32, 29, .04) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(90deg, #000 0%, rgba(0,0,0,.3) 62%, transparent 100%);
      opacity: .55;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, .98fr) minmax(360px, .82fr) minmax(290px, .52fr);
      gap: 26px;
      align-items: stretch;
      padding: 34px;
    }

    .hero-copy {
      padding: 18px 10px 18px 8px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    h1 {
      margin: 18px 0 18px;
      font-size: clamp(36px, 5.8vw, 72px);
      line-height: .98;
      letter-spacing: -.075em;
      font-weight: 950;
    }

    .hero-lead {
      margin: 0;
      max-width: 660px;
      color: var(--color-muted);
      font-size: 18px;
      line-height: 1.82;
    }

    .hero-actions {
      margin-top: 26px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .hero-points {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 26px;
    }

    .point {
      border: 1px solid rgba(32, 32, 29, .1);
      background: rgba(255, 255, 255, .66);
      border-radius: 18px;
      padding: 13px 14px;
    }

    .point strong {
      display: block;
      font-size: 21px;
      line-height: 1.1;
      letter-spacing: -.04em;
    }

    .point span {
      display: block;
      margin-top: 4px;
      color: var(--color-muted);
      font-size: 12px;
    }

    .whitepaper {
      min-height: 520px;
      border-radius: 34px;
      padding: 22px;
      background:
        radial-gradient(circle at 20% 12%, rgba(255, 255, 255, .7), transparent 28%),
        linear-gradient(160deg, #29241f 0%, #5a412e 60%, #b9824b 100%);
      color: #fff;
      position: relative;
      overflow: hidden;
      box-shadow: 0 30px 70px rgba(45, 35, 23, .22);
    }

    .whitepaper::after {
      content: "";
      position: absolute;
      right: -74px;
      bottom: -74px;
      width: 220px;
      height: 220px;
      border: 1px solid rgba(255,255,255,.32);
      border-radius: 50%;
      box-shadow: inset 0 0 0 28px rgba(255,255,255,.06);
    }

    .paper-top {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      align-items: flex-start;
      position: relative;
      z-index: 1;
    }

    .paper-label {
      padding: 8px 11px;
      border-radius: 999px;
      color: #2b2117;
      background: rgba(255, 255, 255, .78);
      font-size: 12px;
      font-weight: 900;
    }

    .paper-date {
      color: rgba(255,255,255,.78);
      font-size: 12px;
      font-weight: 700;
    }

    .paper-title {
      position: relative;
      z-index: 1;
      margin: 72px 0 18px;
      font-size: clamp(32px, 4.2vw, 50px);
      line-height: 1.04;
      letter-spacing: -.06em;
      font-weight: 940;
    }

    .paper-summary {
      position: relative;
      z-index: 1;
      color: rgba(255,255,255,.78);
      margin: 0;
      max-width: 320px;
    }

    .toc-card {
      position: relative;
      z-index: 1;
      margin-top: 34px;
      padding: 18px;
      border-radius: 24px;
      background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.18);
      backdrop-filter: blur(14px);
    }

    .toc-card h3 {
      margin: 0 0 12px;
      color: #fff;
      font-size: 15px;
      font-weight: 880;
    }

    .toc-list {
      list-style: none;
      margin: 0;
      padding: 0;
      display: grid;
      gap: 10px;
    }

    .toc-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: rgba(255,255,255,.82);
      font-size: 13px;
    }

    .toc-list li::before {
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      margin-top: 8px;
      flex: 0 0 auto;
      background: var(--color-accent-2);
    }

    .lead-form {
      border-radius: 34px;
      background: rgba(255,255,255,.84);
      border: 1px solid rgba(32, 32, 29, .1);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      align-self: stretch;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .lead-form h2 {
      margin: 0 0 8px;
      font-size: 23px;
      letter-spacing: -.04em;
      font-weight: 920;
    }

    .lead-form p {
      margin: 0 0 18px;
      color: var(--color-muted);
      font-size: 14px;
    }

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

    .privacy-note {
      display: flex;
      gap: 9px;
      align-items: flex-start;
      margin-top: 12px;
      color: var(--color-muted);
      font-size: 12px;
      line-height: 1.55;
    }

    .privacy-note span {
      width: 18px;
      height: 18px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(79, 124, 90, .12);
      color: var(--color-green);
      flex: 0 0 auto;
      font-weight: 900;
    }

    .news-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.14fr) minmax(320px, .52fr);
      gap: 24px;
      align-items: stretch;
    }

    .news-panel,
    .recommend-panel,
    .surface-card {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .74);
      box-shadow: var(--shadow-sm);
    }

    .news-panel {
      padding: 10px;
    }

    .news-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 8px;
    }

    .news-item a {
      display: grid;
      grid-template-columns: 112px minmax(0, 1fr) auto;
      gap: 18px;
      align-items: center;
      padding: 18px;
      border-radius: 24px;
      color: var(--color-text);
      border: 1px solid transparent;
    }

    .news-item a:hover {
      background: #fff;
      border-color: rgba(185, 130, 75, .24);
      box-shadow: var(--shadow-sm);
      transform: translateY(-1px);
      color: var(--color-text);
    }

    .news-date {
      color: var(--color-accent);
      font-size: 12px;
      font-weight: 900;
      letter-spacing: .08em;
      white-space: nowrap;
    }

    .news-main strong {
      display: block;
      margin-bottom: 5px;
      font-size: 18px;
      line-height: 1.35;
      letter-spacing: -.02em;
    }

    .news-main span {
      display: block;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.58;
    }

    .news-arrow {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--color-muted);
      background: rgba(32, 32, 29, .05);
    }

    .recommend-panel {
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      overflow: hidden;
      position: relative;
    }

    .recommend-panel::before {
      content: "";
      position: absolute;
      inset: auto -50px -70px auto;
      width: 190px;
      height: 190px;
      border-radius: 50%;
      background: rgba(185, 130, 75, .15);
    }

    .recommend-panel h3 {
      margin: 12px 0 10px;
      font-size: 28px;
      line-height: 1.18;
      letter-spacing: -.05em;
    }

    .recommend-panel p {
      color: var(--color-muted);
      margin: 0 0 22px;
    }

    .topic-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
      position: relative;
      z-index: 1;
    }

    .topic-tag {
      padding: 8px 10px;
      border-radius: 999px;
      background: rgba(32, 32, 29, .06);
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 780;
    }

    .metrics-strip {
      display: grid;
      grid-template-columns: 1.05fr repeat(3, 1fr);
      gap: 14px;
    }

    .metric-card {
      position: relative;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.72);
      padding: 24px;
      overflow: hidden;
      min-height: 190px;
      box-shadow: var(--shadow-sm);
    }

    .metric-card.featured {
      background: linear-gradient(145deg, #1f1d19, #453629);
      color: #fff;
      min-height: 220px;
    }

    .metric-card.featured p {
      color: rgba(255,255,255,.72);
    }

    .metric-card:hover,
    .service-card:hover,
    .collection-card:hover,
    .compare-card:hover,
    .app-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(185, 130, 75, .34);
    }

    .metric-number {
      display: block;
      font-size: clamp(32px, 4vw, 48px);
      line-height: 1;
      letter-spacing: -.07em;
      font-weight: 950;
      margin: 18px 0 10px;
    }

    .metric-card h3 {
      margin: 0;
      font-size: 17px;
      font-weight: 900;
      letter-spacing: -.02em;
    }

    .metric-card p {
      margin: 8px 0 0;
      color: var(--color-muted);
      font-size: 14px;
    }

    .mini-chart {
      position: absolute;
      right: 18px;
      bottom: 18px;
      display: flex;
      align-items: end;
      gap: 5px;
      opacity: .55;
    }

    .mini-chart i {
      width: 8px;
      border-radius: 999px;
      background: var(--color-accent);
      display: block;
    }

    .service-grid {
      display: grid;
      grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
      gap: 22px;
      align-items: stretch;
    }

    .service-intro {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(145deg, rgba(32, 32, 29, .97), rgba(65, 50, 35, .96));
      color: #fff;
      padding: 30px;
      min-height: 420px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-md);
    }

    .service-intro h2 {
      margin: 16px 0 14px;
      font-size: clamp(30px, 4vw, 48px);
      line-height: 1.08;
      letter-spacing: -.06em;
      font-weight: 940;
    }

    .service-intro p {
      margin: 0;
      color: rgba(255,255,255,.72);
    }

    .service-note {
      border-top: 1px solid rgba(255,255,255,.14);
      padding-top: 20px;
      display: flex;
      gap: 12px;
      align-items: center;
      color: rgba(255,255,255,.82);
      font-weight: 800;
    }

    .service-note b {
      width: 40px;
      height: 40px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: rgba(255,255,255,.12);
      color: var(--color-accent-2);
    }

    .service-cards {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .service-card,
    .collection-card,
    .compare-card,
    .app-card {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.75);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
    }

    .icon-box {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: #7a4f25;
      background: rgba(232, 200, 157, .27);
      margin-bottom: 18px;
      font-weight: 950;
    }

    .service-card h3,
    .collection-card h3,
    .compare-card h3,
    .app-card h3 {
      margin: 0 0 9px;
      font-size: 20px;
      letter-spacing: -.035em;
      font-weight: 910;
    }

    .service-card p,
    .collection-card p,
    .compare-card p,
    .app-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.66;
    }

    .collections-layout {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }

    .collection-card {
      min-height: 246px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    .collection-card::after {
      content: "";
      position: absolute;
      right: -36px;
      top: -36px;
      width: 110px;
      height: 110px;
      border-radius: 50%;
      background: rgba(185, 130, 75, .12);
    }

    .collection-meta {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      align-items: center;
      margin-top: 24px;
      position: relative;
      z-index: 1;
    }

    .collection-count {
      color: var(--color-accent);
      font-weight: 900;
      font-size: 13px;
    }

    .collection-link {
      font-weight: 880;
      color: var(--color-text);
      font-size: 13px;
    }

    .compare-wrap {
      display: grid;
      grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
      gap: 22px;
      align-items: stretch;
    }

    .compare-copy {
      padding: 30px;
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.62);
      border: 1px solid var(--color-border);
    }

    .compare-copy h2 {
      margin: 12px 0 14px;
      font-size: clamp(30px, 4vw, 46px);
      line-height: 1.1;
      letter-spacing: -.06em;
      font-weight: 940;
    }

    .compare-copy p {
      margin: 0;
      color: var(--color-muted);
    }

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

    .compare-card {
      display: grid;
      grid-template-columns: 46px minmax(0, 1fr);
      gap: 16px;
      align-items: start;
      padding: 20px;
    }

    .compare-status {
      width: 46px;
      height: 46px;
      border-radius: 17px;
      display: grid;
      place-items: center;
      font-weight: 950;
      color: var(--color-green);
      background: rgba(79, 124, 90, .12);
    }

    .app-stage {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(135deg, rgba(255,255,255,.84), rgba(255,255,255,.62)),
        radial-gradient(circle at 88% 12%, rgba(185,130,75,.22), transparent 35%);
      padding: 30px;
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: minmax(0, .86fr) minmax(320px, .54fr);
      gap: 28px;
      align-items: center;
    }

    .app-copy h2 {
      margin: 14px 0 14px;
      font-size: clamp(31px, 4vw, 52px);
      line-height: 1.08;
      letter-spacing: -.065em;
      font-weight: 950;
    }

    .app-copy p {
      margin: 0 0 22px;
      color: var(--color-muted);
      max-width: 650px;
    }

    .app-feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 20px;
    }

    .app-mini {
      padding: 14px;
      border-radius: 20px;
      border: 1px solid rgba(32,32,29,.09);
      background: rgba(255,255,255,.58);
    }

    .app-mini strong {
      display: block;
      margin-bottom: 3px;
      font-size: 14px;
    }

    .app-mini span {
      color: var(--color-muted);
      font-size: 12px;
      line-height: 1.45;
      display: block;
    }

    .qr-card {
      min-height: 330px;
      border-radius: 34px;
      padding: 24px;
      background: #1f1d19;
      color: #fff;
      position: relative;
      overflow: hidden;
      display: grid;
      place-items: center;
      text-align: center;
    }

    .qr-card::before {
      content: "";
      position: absolute;
      inset: -80px -80px auto auto;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(185, 130, 75, .35);
      filter: blur(2px);
    }

    .fake-qr {
      position: relative;
      width: 150px;
      height: 150px;
      border-radius: 24px;
      background:
        linear-gradient(90deg, #fff 10px, transparent 10px) 0 0/30px 30px,
        linear-gradient(#fff 10px, transparent 10px) 0 0/30px 30px,
        #2f2b25;
      border: 10px solid rgba(255,255,255,.9);
      margin: 0 auto 18px;
      box-shadow: 0 16px 40px rgba(0,0,0,.25);
    }

    .fake-qr::after {
      content: "";
      position: absolute;
      inset: 38px;
      border-radius: 14px;
      background: var(--color-accent);
      box-shadow:
        -42px -42px 0 #1f1d19,
        42px -42px 0 #1f1d19,
        -42px 42px 0 #1f1d19;
    }

    .qr-card h3 {
      position: relative;
      margin: 0 0 8px;
      font-size: 22px;
      font-weight: 920;
    }

    .qr-card p {
      position: relative;
      margin: 0;
      color: rgba(255,255,255,.7);
      font-size: 14px;
    }

    .faq-wrap {
      display: grid;
      grid-template-columns: minmax(280px, .42fr) minmax(0, .78fr);
      gap: 24px;
      align-items: start;
    }

    .faq-aside {
      position: sticky;
      top: 150px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-border);
      background: rgba(255,255,255,.7);
      padding: 26px;
      box-shadow: var(--shadow-sm);
    }

    .faq-aside h2 {
      margin: 12px 0 12px;
      font-size: 34px;
      line-height: 1.12;
      letter-spacing: -.055em;
      font-weight: 940;
    }

    .faq-aside p {
      margin: 0 0 20px;
      color: var(--color-muted);
    }

    .accordion {
      background: transparent;
      border: 0;
      margin: 0;
    }

    .accordion-item {
      border-radius: 22px;
      overflow: hidden;
      margin-bottom: 12px;
      border: 1px solid var(--color-border);
      background: rgba(255,255,255,.76);
      box-shadow: var(--shadow-sm);
    }

    .accordion-title {
      border: 0;
      padding: 21px 54px 21px 22px;
      color: var(--color-text);
      font-weight: 900;
      font-size: 17px;
      line-height: 1.4;
      background: transparent;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      background: rgba(232, 200, 157, .12);
      color: var(--color-text);
    }

    .accordion-title::before {
      right: 22px;
      margin-top: -12px;
      font-size: 22px;
      color: var(--color-accent);
    }

    .accordion-content {
      border: 0;
      background: rgba(255,255,255,.45);
      color: var(--color-muted);
      padding: 0 22px 22px;
      line-height: 1.82;
    }

    .about-grid {
      display: grid;
      grid-template-columns: minmax(0, .88fr) minmax(320px, .6fr);
      gap: 24px;
      align-items: stretch;
    }

    .about-card {
      border-radius: var(--radius-xl);
      padding: 34px;
      color: #fff;
      background:
        linear-gradient(140deg, rgba(31,29,25,.98), rgba(63,48,35,.95)),
        radial-gradient(circle at 88% 16%, rgba(185,130,75,.42), transparent 26%);
      box-shadow: var(--shadow-lg);
      min-height: 420px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      overflow: hidden;
      position: relative;
    }

    .about-card h2 {
      margin: 16px 0 16px;
      font-size: clamp(34px, 4.6vw, 58px);
      line-height: 1.06;
      letter-spacing: -.07em;
      font-weight: 950;
    }

    .about-card p {
      margin: 0;
      max-width: 720px;
      color: rgba(255,255,255,.72);
    }

    .about-list {
      margin-top: 30px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }

    .about-list span {
      border-radius: 20px;
      padding: 15px;
      background: rgba(255,255,255,.1);
      border: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.82);
      font-size: 13px;
      font-weight: 800;
    }

    .contact-card {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-xl);
      background: rgba(255,255,255,.78);
      padding: 28px;
      box-shadow: var(--shadow-md);
    }

    .contact-card h3 {
      margin: 0 0 8px;
      font-size: 26px;
      line-height: 1.18;
      letter-spacing: -.05em;
      font-weight: 930;
    }

    .contact-card p {
      margin: 0 0 18px;
      color: var(--color-muted);
    }

    .site-footer {
      padding: 54px 0 34px;
      background: #171613;
      color: rgba(255,255,255,.76);
      margin-top: 34px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(280px, .42fr);
      gap: 28px;
      align-items: start;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(255,255,255,.1);
    }

    .footer-brand {
      display: flex;
      gap: 14px;
      align-items: center;
      margin-bottom: 14px;
    }

    .footer-brand .brand-mark {
      box-shadow: none;
      background: linear-gradient(135deg, #fff, #b9824b);
      color: #171613;
    }

    .footer-name {
      color: #fff;
      font-size: 20px;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .footer-desc {
      max-width: 720px;
      color: rgba(255,255,255,.62);
      margin: 0;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: flex-end;
    }

    .footer-links a {
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 999px;
      padding: 9px 13px;
      color: rgba(255,255,255,.72);
      font-size: 13px;
      font-weight: 800;
    }

    .footer-links a:hover {
      background: rgba(255,255,255,.08);
      color: #fff;
      border-color: rgba(232,200,157,.4);
    }

    .footer-bottom {
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      flex-wrap: wrap;
      color: rgba(255,255,255,.5);
      font-size: 13px;
    }

    .toast {
      position: fixed;
      left: 50%;
      bottom: 28px;
      transform: translateX(-50%) translateY(20px);
      background: #1f1d19;
      color: #fff;
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 999px;
      padding: 12px 18px;
      box-shadow: var(--shadow-lg);
      opacity: 0;
      pointer-events: none;
      transition: opacity .25s var(--ease), transform .25s var(--ease);
      z-index: 120;
      font-weight: 800;
      font-size: 14px;
    }

    .toast.show {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
    }

    @media (max-width: 1180px) {
      .hero-content {
        grid-template-columns: 1fr 1fr;
      }

      .lead-form {
        grid-column: 1 / -1;
      }

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

      .metric-card.featured {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 1024px) {
      .top-nav {
        flex-wrap: wrap;
        padding: 14px 0;
      }

      .brand {
        flex: 1 1 auto;
      }

      .nav-tools {
        flex: 1 1 100%;
        justify-content: flex-start;
      }

      .search-box {
        width: 100%;
        flex: 1 1 auto;
      }

      .hero-content,
      .news-layout,
      .service-grid,
      .compare-wrap,
      .app-stage,
      .faq-wrap,
      .about-grid,
      .footer-top,
      .section-head {
        grid-template-columns: 1fr;
      }

      .whitepaper {
        min-height: 430px;
      }

      .faq-aside {
        position: relative;
        top: auto;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .section {
        padding: 62px 0;
      }

      .hero {
        padding: 32px 0 54px;
      }

      .hero-content {
        padding: 20px;
        gap: 18px;
      }

      .hero-board,
      .about-card,
      .app-stage {
        border-radius: 30px;
      }

      .hero-copy {
        padding: 8px 0;
      }

      h1 {
        font-size: clamp(34px, 12vw, 54px);
      }

      .hero-lead {
        font-size: 16px;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }

      .hero-points,
      .service-cards,
      .collections-layout,
      .app-feature-grid,
      .about-list {
        grid-template-columns: 1fr;
      }

      .metrics-strip {
        grid-template-columns: 1fr;
      }

      .news-item a {
        grid-template-columns: 1fr auto;
        gap: 10px;
      }

      .news-date {
        grid-column: 1 / -1;
      }

      .whitepaper {
        min-height: auto;
      }

      .paper-title {
        margin-top: 50px;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 520px) {
      .brand-name {
        font-size: 15px;
        max-width: 210px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .brand-sub {
        display: none;
      }

      .header-cta {
        display: none;
      }

      .nav-tools {
        gap: 8px;
      }

      .search-box input {
        height: 43px;
        font-size: 14px;
      }

      .channel-tab {
        padding: 8px 13px;
        font-size: 13px;
      }

      .section-title,
      .service-intro h2,
      .compare-copy h2,
      .app-copy h2,
      .about-card h2 {
        letter-spacing: -.045em;
      }

      .lead-form,
      .service-intro,
      .compare-copy,
      .about-card,
      .contact-card,
      .recommend-panel,
      .app-stage {
        padding: 22px;
      }

      .paper-title {
        font-size: 34px;
      }

      .toast {
        width: calc(100% - 28px);
        text-align: center;
        border-radius: 18px;
      }
    }