:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --secondary: #06b6d4;
      --accent: #f43f5e;
      --bg-base: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-sub: #475569;
      --text-light: #64748b;
      --border-color: #e2e8f0;
      --gradient-main: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      --gradient-light: linear-gradient(180deg, #f0f7ff 0%, #f8fafc 100%);
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 12px 30px rgba(79, 70, 229, 0.12);
      --radius: 12px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

    ul, ol {
      list-style: none;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-box img {
      height: 38px;
      width: auto;
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      gap: 0;
      align-items: center;
    }

    .nav-links li a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-sub);
      transition: color 0.25s ease;
      display: block;
      padding: 8px 14px;
    }

    .nav-links li a:hover {
      color: var(--primary);
    }

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

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      background: var(--gradient-main);
      color: #ffffff;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
      padding: 6px;
    }

    .hero-section {
      background: var(--gradient-light);
      padding: 70px 0 50px;
      text-align: center;
      position: relative;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: #e0e7ff;
      color: var(--primary);
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 38px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-sub);
      max-width: 820px;
      margin: 0 auto 32px;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .btn-cta-lg {
      padding: 13px 32px;
      font-size: 16px;
      font-weight: 600;
      border-radius: 30px;
      background: var(--gradient-main);
      color: #ffffff;
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
      transition: all 0.2s;
    }

    .btn-cta-lg:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
    }

    .btn-sub-lg {
      padding: 13px 30px;
      font-size: 16px;
      font-weight: 600;
      border-radius: 30px;
      background: #ffffff;
      color: var(--primary);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.2s;
    }

    .btn-sub-lg:hover {
      border-color: var(--primary);
      color: var(--primary-light);
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      max-width: 980px;
      margin: 0 auto;
    }

    .stat-card {
      background: #ffffff;
      padding: 22px 16px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .stat-value {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .stat-name {
      font-size: 13px;
      color: var(--text-sub);
    }

    .section-block {
      padding: 60px 0;
    }

    .section-heading {
      text-align: center;
      margin-bottom: 42px;
    }

    .section-heading h2 {
      font-size: 28px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .section-heading p {
      font-size: 15px;
      color: var(--text-sub);
      max-width: 650px;
      margin: 0 auto;
    }

    .platforms-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
    }

    .platform-tag {
      padding: 8px 16px;
      background: #f1f5f9;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-sub);
      border: 1px solid transparent;
      transition: all 0.2s ease;
    }

    .platform-tag:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #eef2ff;
    }

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

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

    .service-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }

    .service-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: #eef2ff;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
    }

    .service-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .service-card p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      flex: 1;
    }

    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .media-img-wrap {
      width: 100%;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .media-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }

    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }

    .media-body {
      padding: 18px;
    }

    .media-body h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .media-body p {
      font-size: 13px;
      color: var(--text-sub);
    }

    .table-container {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .custom-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .custom-table tr:last-child td {
      border-bottom: none;
    }

    .badge-hl {
      background: #eef2ff;
      color: var(--primary);
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 600;
      display: inline-block;
    }

    .rating-banner {
      background: linear-gradient(135deg, #312e81 0%, #1e1b4b 100%);
      color: #ffffff;
      border-radius: var(--radius);
      padding: 30px 36px;
      margin-bottom: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-banner-left h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .rating-banner-left p {
      color: #cbd5e1;
      font-size: 14px;
    }

    .rating-score {
      display: flex;
      align-items: baseline;
      gap: 6px;
      background: rgba(255, 255, 255, 0.1);
      padding: 12px 24px;
      border-radius: 12px;
    }

    .rating-score .num {
      font-size: 38px;
      font-weight: 900;
      color: #38bdf8;
    }

    .rating-score .full {
      font-size: 18px;
      color: #94a3b8;
    }

    .faq-list {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
    }

    .faq-question {
      padding: 18px 22px;
      font-weight: 600;
      font-size: 15px;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 20px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: #f8fafc;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.6;
    }

    .faq-answer-inner {
      padding: 16px 22px;
      border-top: 1px solid var(--border-color);
    }

    .feedback-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .feedback-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .avatar-char {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--gradient-main);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }

    .user-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .user-info span {
      font-size: 12px;
      color: var(--text-light);
    }

    .feedback-text {
      font-size: 13.5px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 36px;
      max-width: 780px;
      margin: 0 auto;
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      background: #ffffff;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
    }

    .form-grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: var(--gradient-main);
      color: #ffffff;
      border: none;
      border-radius: 8px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(79, 70, 229, 0.3);
    }

    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-item {
      font-size: 14px;
      color: var(--text-sub);
    }

    .contact-item strong {
      color: var(--text-main);
      margin-right: 8px;
    }

    .contact-qr {
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
    }

    .contact-qr img {
      max-width: 150px;
      height: auto;
      margin-bottom: 10px;
      border-radius: 6px;
    }

    .contact-qr span {
      font-size: 13px;
      color: var(--text-sub);
      font-weight: 500;
    }

    .articles-block {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
    }

    .articles-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 16px;
    }

    .article-pill {
      font-size: 13px;
      color: var(--primary);
      background: #eef2ff;
      padding: 6px 14px;
      border-radius: 16px;
      display: inline-block;
      transition: all 0.2s;
    }

    .article-pill:hover {
      background: var(--primary);
      color: #ffffff;
    }

    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 50px 0 24px;
      border-top: 1px solid #1e293b;
    }

    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand h4 {
      font-size: 18px;
      color: #f8fafc;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      max-width: 380px;
    }

    .footer-nav-col h5 {
      font-size: 14px;
      font-weight: 600;
      color: #f8fafc;
      margin-bottom: 14px;
    }

    .footer-nav-col ul {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-nav-col a {
      font-size: 13px;
      color: #94a3b8;
      transition: color 0.2s;
    }

    .footer-nav-col a:hover {
      color: #ffffff;
    }

    .friend-links {
      border-top: 1px solid #1e293b;
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      font-size: 12px;
    }

    .friend-links span {
      color: #cbd5e1;
    }

    .friend-links a {
      color: #94a3b8;
      transition: color 0.2s;
    }

    .friend-links a:hover {
      color: #38bdf8;
    }

    .copyright-row {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 12px;
      color: #64748b;
    }

    .side-float {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .side-float a, .side-float button {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border-color);
      color: var(--primary);
      font-size: 14px;
      font-weight: 700;
      cursor: pointer;
      transition: all 0.2s;
    }

    .side-float a:hover, .side-float button:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.05);
    }

    @media (max-width: 992px) {
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .cards-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li a {
        padding: 10px 0;
        border-bottom: 1px solid #f1f5f9;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-desc {
        font-size: 14px;
      }
      .cards-grid-3, .cards-grid-4 {
        grid-template-columns: 1fr;
      }
      .form-grid-2 {
        grid-template-columns: 1fr;
      }
    }