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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      background: #f7f9fc;
      color: #1f2937;
      line-height: 1.75;
      font-size: 16px;
      padding-bottom: 90px;
    }

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

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

    ul {
      list-style: none;
    }

    .bnbapp-container {
      width: min(1200px, calc(100% - 32px));
      margin: 0 auto;
    }

    .bnbapp-section {
      padding: 68px 0;
    }

    .bnbapp-section-title {
      font-size: 34px;
      line-height: 1.3;
      color: #0f172a;
      margin-bottom: 14px;
      font-weight: 800;
      text-align: center;
    }

    .bnbapp-section-desc {
      font-size: 16px;
      color: #64748b;
      max-width: 860px;
      margin: 0 auto 38px;
      text-align: center;
    }

    .bnbapp-tag {
      display: inline-flex;
      align-items: center;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(247, 181, 0, 0.12);
      color: #8a6000;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .bnbapp-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 150px;
      padding: 13px 22px;
      border-radius: 14px;
      font-size: 15px;
      font-weight: 700;
      transition: all 0.25s ease;
    }

    .bnbapp-btn-primary {
      background: linear-gradient(135deg, #f7b500, #ffd54f);
      color: #111827;
      box-shadow: 0 12px 28px rgba(247, 181, 0, 0.22);
    }

    .bnbapp-btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 16px 34px rgba(247, 181, 0, 0.28);
    }

    .bnbapp-btn-secondary {
      background: #111827;
      color: #ffffff;
      box-shadow: 0 12px 28px rgba(15, 23, 42, 0.16);
    }

    .bnbapp-btn-secondary:hover {
      transform: translateY(-2px);
      background: #0b1220;
    }

    .bnbapp-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid #e5e7eb;
    }

    .bnbapp-header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      min-height: 74px;
    }

    .bnbapp-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 22px;
      font-weight: 800;
      color: #0f172a;
      white-space: nowrap;
    }

    .bnbapp-logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, #f7b500, #ffd54f);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #111827;
      font-size: 18px;
      font-weight: 900;
      box-shadow: 0 10px 20px rgba(247, 181, 0, 0.22);
    }

    .bnbapp-nav {
      display: flex;
      align-items: center;
      gap: 22px;
      flex-wrap: wrap;
    }

    .bnbapp-nav a {
      color: #334155;
      font-size: 15px;
      font-weight: 600;
    }

    .bnbapp-nav a:hover {
      color: #111827;
    }

    .bnbapp-hero {
      position: relative;
      overflow: hidden;
      background:
        radial-gradient(circle at top left, rgba(247, 181, 0, 0.16), transparent 28%),
        radial-gradient(circle at right center, rgba(59, 130, 246, 0.14), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      padding: 72px 0 64px;
    }

    .bnbapp-hero-grid {
      display: grid;
      grid-template-columns: 1.12fr 0.88fr;
      gap: 40px;
      align-items: center;
    }

    .bnbapp-hero h1 {
      font-size: 48px;
      line-height: 1.18;
      color: #0f172a;
      margin-bottom: 18px;
      font-weight: 900;
    }

    .bnbapp-hero p {
      font-size: 17px;
      color: #475569;
      margin-bottom: 24px;
    }

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

    .bnbapp-hero-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .bnbapp-hero-point {
      background: #ffffff;
      border: 1px solid #e8edf3;
      border-radius: 18px;
      padding: 18px 16px;
      box-shadow: 0 14px 34px rgba(15, 23, 42, 0.05);
    }

    .bnbapp-hero-point strong {
      display: block;
      font-size: 20px;
      color: #0f172a;
      margin-bottom: 6px;
    }

    .bnbapp-hero-point span {
      font-size: 14px;
      color: #64748b;
    }

    .bnbapp-phone-card {
      position: relative;
      background: linear-gradient(180deg, #0f172a 0%, #111827 100%);
      border-radius: 30px;
      padding: 28px;
      box-shadow: 0 26px 52px rgba(15, 23, 42, 0.22);
      color: #ffffff;
    }

    .bnbapp-phone-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 18px;
    }

    .bnbapp-phone-screen {
      background: #ffffff;
      border-radius: 24px;
      padding: 22px;
      color: #0f172a;
    }

    .bnbapp-screen-badge {
      display: inline-flex;
      padding: 6px 12px;
      border-radius: 999px;
      background: #fff7df;
      color: #9a6a00;
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .bnbapp-screen-title {
      font-size: 26px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 12px;
    }

    .bnbapp-screen-list {
      display: grid;
      gap: 12px;
      margin: 22px 0;
    }

    .bnbapp-screen-list li {
      padding: 14px 16px;
      border-radius: 16px;
      background: #f8fafc;
      border: 1px solid #ebf0f5;
      font-size: 15px;
      color: #475569;
    }

    .bnbapp-screen-list li strong {
      color: #0f172a;
      display: block;
      margin-bottom: 4px;
    }

    .bnbapp-card-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 22px;
    }

    .bnbapp-card {
      background: #ffffff;
      border: 1px solid #e8edf3;
      border-radius: 22px;
      padding: 26px;
      box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }

    .bnbapp-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    }

    .bnbapp-card-icon {
      width: 54px;
      height: 54px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(247,181,0,0.16), rgba(255,213,79,0.35));
      color: #7a5a00;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .bnbapp-card h3 {
      font-size: 22px;
      color: #0f172a;
      margin-bottom: 12px;
      line-height: 1.35;
    }

    .bnbapp-card p {
      color: #64748b;
      font-size: 15px;
    }

    .bnbapp-steps {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 22px;
    }

    .bnbapp-step {
      position: relative;
      background: #ffffff;
      border: 1px solid #e8edf3;
      border-radius: 24px;
      padding: 28px 24px 24px;
      box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
    }

    .bnbapp-step-num {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #f7b500, #ffd54f);
      color: #111827;
      font-size: 16px;
      font-weight: 900;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: 0 10px 20px rgba(247, 181, 0, 0.22);
    }

    .bnbapp-step h3 {
      font-size: 21px;
      margin-bottom: 10px;
      color: #0f172a;
      line-height: 1.4;
    }

    .bnbapp-step p {
      color: #64748b;
      font-size: 15px;
    }

    .bnbapp-dual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }

    .bnbapp-panel {
      background: #ffffff;
      border: 1px solid #e8edf3;
      border-radius: 24px;
      padding: 28px;
      box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
    }

    .bnbapp-panel h3 {
      font-size: 25px;
      color: #0f172a;
      margin-bottom: 14px;
      line-height: 1.35;
    }

    .bnbapp-panel p {
      color: #64748b;
      margin-bottom: 16px;
      font-size: 15px;
    }

    .bnbapp-list {
      display: grid;
      gap: 14px;
    }

    .bnbapp-list li {
      position: relative;
      padding-left: 18px;
      color: #475569;
      font-size: 15px;
    }

    .bnbapp-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 11px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: #f7b500;
    }

    .bnbapp-feature-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 20px;
    }

    .bnbapp-feature-item {
      background: #ffffff;
      border: 1px solid #e8edf3;
      border-radius: 22px;
      padding: 24px 20px;
      text-align: center;
      box-shadow: 0 14px 36px rgba(15, 23, 42, 0.05);
    }

    .bnbapp-feature-item strong {
      display: block;
      font-size: 19px;
      color: #0f172a;
      margin: 12px 0 8px;
    }

    .bnbapp-feature-item p {
      color: #64748b;
      font-size: 14px;
    }

    .bnbapp-faq {
      display: grid;
      gap: 16px;
    }

    .bnbapp-faq-item {
      background: #ffffff;
      border: 1px solid #e8edf3;
      border-radius: 20px;
      padding: 22px 24px;
      box-shadow: 0 10px 28px rgba(15, 23, 42, 0.04);
    }

    .bnbapp-faq-item h3 {
      font-size: 19px;
      color: #0f172a;
      margin-bottom: 10px;
      line-height: 1.45;
    }

    .bnbapp-faq-item p {
      color: #64748b;
      font-size: 15px;
    }

    .bnbapp-cta-box {
      background: linear-gradient(135deg, #111827, #1f2937);
      border-radius: 28px;
      padding: 38px;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      box-shadow: 0 22px 46px rgba(15, 23, 42, 0.2);
    }

    .bnbapp-cta-box h2 {
      font-size: 34px;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .bnbapp-cta-box p {
      color: rgba(255,255,255,0.82);
      font-size: 15px;
    }

    .bnbapp-footer {
      background: #0f172a;
      color: rgba(255,255,255,0.82);
      padding: 48px 0 34px;
    }

    .bnbapp-footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr 1fr;
      gap: 28px;
    }

    .bnbapp-footer h3,
    .bnbapp-footer h4 {
      color: #ffffff;
      margin-bottom: 14px;
    }

    .bnbapp-footer p,
    .bnbapp-footer li,
    .bnbapp-footer a {
      font-size: 14px;
      color: rgba(255,255,255,0.74);
    }

    .bnbapp-footer ul {
      display: grid;
      gap: 10px;
    }

    .bnbapp-footer-copy {
      margin-top: 28px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,0.1);
      font-size: 13px;
      color: rgba(255,255,255,0.56);
      text-align: center;
    }

    .bnbapp-bottom-bar {
      position: fixed;
      left: 0;
      right: 0;
      bottom: 0;
      z-index: 99;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(12px);
      border-top: 1px solid #e5e7eb;
      box-shadow: 0 -12px 30px rgba(15, 23, 42, 0.06);
    }

    .bnbapp-bottom-inner {
      width: min(1200px, calc(100% - 20px));
      margin: 0 auto;
      min-height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .bnbapp-bottom-info {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .bnbapp-bottom-info strong {
      display: block;
      color: #0f172a;
      font-size: 16px;
      line-height: 1.4;
    }

    .bnbapp-bottom-info span {
      display: block;
      color: #64748b;
      font-size: 13px;
      line-height: 1.4;
    }

    .bnbapp-bottom-actions {
      display: flex;
      gap: 10px;
      flex-shrink: 0;
    }

    .bnbapp-muted-box {
      background: #fffaf0;
      border: 1px solid #fde7a8;
      border-radius: 18px;
      padding: 16px 18px;
      color: #8a6000;
      font-size: 14px;
      margin-top: 18px;
    }

    @media (max-width: 1080px) {
      .bnbapp-hero-grid,
      .bnbapp-dual,
      .bnbapp-footer-grid {
        grid-template-columns: 1fr;
      }

      .bnbapp-card-grid,
      .bnbapp-steps,
      .bnbapp-feature-grid,
      .bnbapp-hero-points {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .bnbapp-hero h1 {
        font-size: 40px;
      }
    }

    @media (max-width: 768px) {
      body {
        font-size: 15px;
      }

      .bnbapp-header-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 14px 0;
      }

      .bnbapp-nav {
        gap: 14px;
      }

      .bnbapp-hero {
        padding: 56px 0 50px;
      }

      .bnbapp-hero h1 {
        font-size: 32px;
      }

      .bnbapp-section {
        padding: 54px 0;
      }

      .bnbapp-section-title {
        font-size: 28px;
      }

      .bnbapp-card-grid,
      .bnbapp-steps,
      .bnbapp-feature-grid,
      .bnbapp-hero-points {
        grid-template-columns: 1fr;
      }

      .bnbapp-cta-box {
        padding: 28px 22px;
        flex-direction: column;
        align-items: flex-start;
      }

      .bnbapp-cta-box h2 {
        font-size: 28px;
      }

      .bnbapp-bottom-inner {
        min-height: auto;
        padding: 12px 0;
        flex-direction: column;
        align-items: stretch;
      }

      .bnbapp-bottom-actions {
        width: 100%;
      }

      .bnbapp-bottom-actions .bnbapp-btn {
        flex: 1;
        min-width: 0;
        padding-left: 10px;
        padding-right: 10px;
      }
    }