body .container {
      max-width: 1200px;
    }

    /* Hero Section */
    .hero-section {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 20px;
      padding: 60px 40px;
      margin-bottom: 40px;
      margin-top: 0;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
    }

    .hero-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
      opacity: 0.3;
    }

    .hero-content {
      flex: 1;
      position: relative;
      z-index: 1;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(10px);
      padding: 8px 16px;
      border-radius: 20px;
      margin-bottom: 20px;
      border: 1px solid rgba(255, 255, 255, 0.3);
    }

    .badge-icon {
      font-size: 16px;
    }

    .badge-text {
      color: white;
      font-size: 14px;
      font-weight: 500;
    }

    .hero-title {
      font-size: 48px;
      font-weight: 800;
      color: white;
      margin: 0 0 20px 0;
      line-height: 1.2;
    }

    .gradient-text {
      background: linear-gradient(to right, #fff, #f0f0ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-subtitle {
      font-size: 32px;
      font-weight: 700;
      color: #ffffff;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
      letter-spacing: 0.5px;
    }

    .hero-description {
      font-size: 18px;
      color: rgba(255, 255, 255, 0.9);
      margin: 20px 0 30px 0;
      line-height: 1.6;
      max-width: 500px;
    }

    .hero-actions {
      display: flex;
      gap: 15px;
      flex-wrap: wrap;
    }

    .btn-hero {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 14px 28px;
      border-radius: 12px;
      font-size: 16px;
      font-weight: 600;
      text-decoration: none;
      transition: all 0.3s ease;
      border: none;
      cursor: pointer;
    }

    .btn-hero-primary {
      background: white;
      color: #667eea;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .btn-hero-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
      color: #667eea;
      text-decoration: none;
    }

    .btn-hero-secondary {
      background: rgba(255, 255, 255, 0.2);
      color: white;
      border: 2px solid rgba(255, 255, 255, 0.3);
      backdrop-filter: blur(10px);
    }

    .btn-hero-secondary:hover {
      background: rgba(255, 255, 255, 0.3);
      border-color: rgba(255, 255, 255, 0.5);
      transform: translateY(-2px);
      color: white;
      text-decoration: none;
    }

    .btn-icon {
      font-size: 20px;
    }

    /* Hero Visual */
    .hero-visual {
      flex: 0 0 300px;
      height: 300px;
      position: relative;
      display: none;
    }

    @media (min-width: 992px) {
      .hero-visual {
        display: block;
      }
    }

    .floating-card {
      position: absolute;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.3);
      border-radius: 16px;
      padding: 16px 20px;
      animation: float 4s ease-in-out infinite;
      transition: all 0.3s ease;
    }

    .floating-card:hover {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.15) 100%);
      transform: translateY(-5px) scale(1.05);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    }

    .floating-card .card-icon {
      font-size: 28px;
      margin-bottom: 6px;
      filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    }

    .floating-card .card-text {
      font-size: 13px;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.95);
      text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
      letter-spacing: 0.5px;
    }

    .card-1 {
      top: 30px;
      right: 50px;
      animation-delay: 0s;
    }

    .card-2 {
      top: 110px;
      right: 140px;
      animation-delay: 0.7s;
    }

    .card-3 {
      top: 190px;
      right: 30px;
      animation-delay: 1.4s;
    }

    @keyframes float {
      0%, 100% {
        transform: translateY(0px);
      }
      50% {
        transform: translateY(-12px);
      }
    }

    /* Announcements Section - 紧凑版 */
    .announcements-section-compact {
      margin-bottom: 30px;
    }

    .announcements-list-compact {
      background: white;
      border-radius: 12px;
      padding: 16px 20px;
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    }

    .announcement-item-compact {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.2s ease;
      border-left: 3px solid transparent;
    }

    .announcement-item-compact:not(:last-child) {
      border-bottom: 1px solid #f0f0f0;
    }

    .announcement-item-compact:hover {
      background: #f7fafc;
      border-left-color: #667eea;
    }

    .announcement-item-compact[data-type="update"]:hover {
      border-left-color: #48bb78;
    }

    .announcement-item-compact[data-type="maintenance"]:hover {
      border-left-color: #ed8936;
    }

    .announcement-item-compact[data-type="warning"]:hover {
      border-left-color: #f56565;
    }

    .announcement-pinned-compact {
      background: #fff5f5;
    }

    .announcement-icon-compact {
      font-size: 18px;
      flex-shrink: 0;
    }

    .pinned-tag-compact {
      padding: 2px 8px;
      background: #fee;
      color: #e53e3e;
      border-radius: 4px;
      font-size: 11px;
      font-weight: 600;
      flex-shrink: 0;
    }

    .announcement-title-compact {
      flex: 1;
      font-size: 14px;
      font-weight: 500;
      color: #2d3748;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .announcement-date-compact {
      font-size: 12px;
      color: #9ca3af;
      flex-shrink: 0;
    }

    .view-detail-icon {
      font-size: 14px;
      color: #9ca3af;
      flex-shrink: 0;
      transition: transform 0.2s ease;
    }

    .announcement-item-compact:hover .view-detail-icon {
      transform: translateX(3px);
      color: #667eea;
    }

    /* Announcement Modal */
    .announcement-modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(5px);
      z-index: 9999;
      align-items: center;
      justify-content: center;
      padding: 20px;
      animation: fadeIn 0.3s ease;
    }

    .modal-content {
      background: white;
      border-radius: 20px;
      max-width: 700px;
      width: 100%;
      max-height: 80vh;
      overflow-y: auto;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
      animation: slideUp 0.3s ease;
      position: relative;
    }

    .modal-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 25px 30px;
      border-bottom: 2px solid #e2e8f0;
      background: linear-gradient(135deg, #f7fafc 0%, #ffffff 100%);
      border-radius: 20px 20px 0 0;
    }

    .modal-header-left {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .modal-type-badge {
      padding: 8px 16px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 600;
    }

    .modal-content[data-type="update"] .modal-type-badge {
      background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    }

    .modal-content[data-type="maintenance"] .modal-type-badge {
      background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
    }

    .modal-content[data-type="warning"] .modal-type-badge {
      background: linear-gradient(135deg, #f56565 0%, #e53e3e 100%);
    }

    .modal-pinned-badge {
      padding: 8px 16px;
      background: rgba(245, 101, 101, 0.1);
      color: #e53e3e;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 600;
      border: 1px solid rgba(245, 101, 101, 0.2);
    }

    .modal-close {
      width: 40px;
      height: 40px;
      border: none;
      background: #f7fafc;
      border-radius: 50%;
      font-size: 28px;
      color: #718096;
      cursor: pointer;
      transition: all 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      line-height: 1;
    }

    .modal-close:hover {
      background: #e2e8f0;
      color: #2d3748;
      transform: rotate(90deg);
    }

    .modal-body {
      padding: 30px;
    }

    .modal-title {
      font-size: 28px;
      font-weight: 700;
      color: #2d3748;
      margin: 0 0 15px 0;
      line-height: 1.3;
    }

    .modal-time {
      font-size: 14px;
      color: #718096;
      margin-bottom: 25px;
      padding-bottom: 20px;
      border-bottom: 1px solid #e2e8f0;
    }

    .modal-content-text {
      color: #4a5568;
      line-height: 1.8;
      font-size: 16px;
      white-space: pre-wrap;
      word-wrap: break-word;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
      }
      to {
        opacity: 1;
      }
    }

    @keyframes slideUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes slideIn {
      from {
        opacity: 0;
        transform: translateY(20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    /* Modal 响应式 */
    @media (max-width: 768px) {
      .modal-content {
        max-width: 95%;
        max-height: 90vh;
      }

      .modal-header {
        padding: 20px;
      }

      .modal-body {
        padding: 20px;
      }

      .modal-title {
        font-size: 22px;
      }
    }

    /* Features Section */
    .features-section {
      margin-bottom: 80px;
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-title {
      font-size: 36px;
      font-weight: 700;
      color: #2d3748;
      margin-bottom: 12px;
    }

    .section-subtitle {
      font-size: 18px;
      color: #718096;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
    }

    .feature-card {
      background: white;
      border-radius: 16px;
      padding: 35px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      transition: all 0.3s ease;
      position: relative;
      border: 2px solid transparent;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 40px rgba(102, 126, 234, 0.15);
      border-color: #667eea;
    }

    .feature-card-highlight {
      border-color: #667eea;
      background: linear-gradient(135deg, #f6f8ff 0%, #ffffff 100%);
    }

    .feature-badge {
      position: absolute;
      top: 15px;
      right: 15px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      padding: 4px 12px;
      border-radius: 12px;
      font-size: 12px;
      font-weight: 600;
    }

    .feature-icon-wrapper {
      width: 70px;
      height: 70px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .feature-icon {
      font-size: 36px;
    }

    .feature-title {
      font-size: 22px;
      font-weight: 700;
      color: #2d3748;
      margin-bottom: 12px;
    }

    .feature-description {
      color: #718096;
      line-height: 1.6;
      margin-bottom: 15px;
    }

    .feature-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .feature-list li {
      padding: 8px 0;
      color: #4a5568;
      position: relative;
      padding-left: 24px;
    }

    .feature-list li::before {
      content: '\2713';
      position: absolute;
      left: 0;
      color: #667eea;
      font-weight: bold;
    }

    /* Workflow Section */
    .workflow-section {
      background: linear-gradient(135deg, #f6f8ff 0%, #ffffff 100%);
      border-radius: 20px;
      padding: 60px 40px;
      margin-bottom: 60px;
    }

    .workflow-steps {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 20px;
      flex-wrap: wrap;
    }

    .workflow-step {
      flex: 1;
      min-width: 250px;
      max-width: 300px;
      background: white;
      border-radius: 16px;
      padding: 30px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      position: relative;
    }

    .step-number {
      position: absolute;
      top: -15px;
      left: 30px;
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: 700;
      font-size: 18px;
      box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    }

    .step-icon {
      font-size: 48px;
      text-align: center;
      margin-bottom: 15px;
    }

    .step-title {
      font-size: 20px;
      font-weight: 700;
      color: #2d3748;
      margin-bottom: 10px;
      text-align: center;
    }

    .step-description {
      color: #718096;
      line-height: 1.6;
      text-align: center;
      font-size: 14px;
    }

    .workflow-arrow {
      font-size: 32px;
      color: #cbd5e0;
      font-weight: bold;
    }

    @media (max-width: 768px) {
      .workflow-arrow {
        display: none;
      }
    }

    /* Stats Section */
    .stats-section {
      margin-bottom: 60px;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 20px;
    }

    .stat-card {
      background: white;
      border-radius: 16px;
      padding: 30px;
      text-align: center;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
      transition: all 0.3s ease;
    }

    .stat-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    }

    .stat-icon {
      font-size: 48px;
      margin-bottom: 15px;
    }

    .stat-number {
      font-size: 28px;
      font-weight: 700;
      color: #2d3748;
      margin-bottom: 8px;
    }

    .stat-label {
      color: #718096;
      font-size: 14px;
    }

    /* CTA Section */
    .cta-section {
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 20px;
      padding: 60px 40px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
      background-size: 50px 50px;
      animation: moveBackground 20s linear infinite;
    }

    @keyframes moveBackground {
      0% {
        transform: translate(0, 0);
      }
      100% {
        transform: translate(50px, 50px);
      }
    }

    .cta-content {
      position: relative;
      z-index: 1;
    }

    .cta-title {
      font-size: 36px;
      font-weight: 700;
      color: white;
      margin-bottom: 15px;
    }

    .cta-description {
      font-size: 18px;
      color: rgba(255, 255, 255, 0.9);
      margin-bottom: 30px;
    }

    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 15px;
    }

    .btn-cta {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 16px 32px;
      border-radius: 12px;
      font-size: 18px;
      font-weight: 600;
      text-decoration: none;
      transition: all 0.3s ease;
    }

    .btn-cta-primary {
      background: white;
      color: #667eea;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    .btn-cta-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
      color: #667eea;
      text-decoration: none;
    }

    .btn-arrow {
      font-size: 20px;
      transition: transform 0.3s ease;
    }

    .btn-cta-primary:hover .btn-arrow {
      transform: translateX(5px);
    }

    /* Message Board Section */
    .message-board-section {
      margin-bottom: 40px;
    }

    /* Message Alert - 扁平化设计 */
    .message-alert {
      background: white;
      border-radius: 8px;
      padding: 14px 18px;
      margin-bottom: 20px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
      display: flex;
      align-items: center;
      gap: 12px;
      animation: slideDown 0.3s ease;
      border: 1px solid #e2e8f0;
      transition: opacity 0.2s ease;
    }

    .message-alert.success {
      background: #f0fdf4;
      border-color: #86efac;
    }

    .message-alert.error {
      background: #fef2f2;
      border-color: #fca5a5;
    }

    .alert-icon {
      font-size: 20px;
      flex-shrink: 0;
    }

    .alert-text {
      flex: 1;
      color: #1f2937;
      font-size: 14px;
      font-weight: 500;
      line-height: 1.5;
    }

    .message-alert.success .alert-text {
      color: #166534;
    }

    .message-alert.error .alert-text {
      color: #991b1b;
    }

    .alert-close {
      width: 24px;
      height: 24px;
      border: none;
      background: transparent;
      font-size: 20px;
      color: #9ca3af;
      cursor: pointer;
      transition: all 0.2s ease;
      border-radius: 4px;
      display: flex;
      align-items: center;
      justify-content: center;
      line-height: 1;
      flex-shrink: 0;
    }

    .alert-close:hover {
      background: rgba(0, 0, 0, 0.05);
      color: #4b5563;
    }

    @keyframes slideDown {
      from {
        opacity: 0;
        transform: translateY(-10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .message-input-container {
      background: white;
      border-radius: 16px;
      padding: 25px;
      margin-bottom: 30px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    }

    .message-input-wrapper {
      display: flex;
      gap: 15px;
      margin-bottom: 15px;
    }

    .user-avatar {
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .avatar-icon {
      font-size: 24px;
    }

    .input-group {
      flex: 1;
    }

    .input-group textarea {
      width: 100%;
      border: 2px solid #e2e8f0;
      border-radius: 12px;
      padding: 12px 15px;
      font-size: 15px;
      line-height: 1.6;
      resize: vertical;
      transition: all 0.3s ease;
    }

    .input-group textarea:focus {
      outline: none;
      border-color: #667eea;
      box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    }

    .char-counter-small {
      text-align: right;
      font-size: 13px;
      color: #718096;
      margin-top: 8px;
    }

    .message-actions {
      display: flex;
      justify-content: flex-end;
    }

    .btn-submit-message {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 12px 24px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      color: white;
      border: none;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn-submit-message:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    }

    .guest-notice {
      background: linear-gradient(135deg, #f7fafc 0%, #ffffff 100%);
      border: 2px solid #e2e8f0;
      border-radius: 16px;
      padding: 30px;
      text-align: center;
      margin-bottom: 30px;
    }

    .notice-icon {
      font-size: 48px;
      display: block;
      margin-bottom: 15px;
    }

    .notice-text {
      font-size: 16px;
      color: #4a5568;
    }

    .notice-text a {
      color: #667eea;
      font-weight: 600;
      text-decoration: none;
    }

    .notice-text a:hover {
      text-decoration: underline;
    }

    .messages-list {
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .messages-scroll {
      max-height: 500px;
      overflow-y: auto;
      padding-right: 10px;
      animation: scrollMessages 20s linear infinite;
    }

    .messages-scroll:hover {
      animation-play-state: paused;
    }

    @keyframes scrollMessages {
      0% {
        transform: translateY(0);
      }
      100% {
        transform: translateY(-50%);
      }
    }

    .message-card {
      background: white;
      border-radius: 12px;
      padding: 20px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
      transition: all 0.3s ease;
    }

    .message-card:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }

    .message-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 12px;
    }

    .message-author {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .author-avatar {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
    }

    .author-name {
      font-weight: 600;
      color: #2d3748;
    }

    .message-time {
      font-size: 13px;
      color: #718096;
    }

    .message-content {
      color: #4a5568;
      line-height: 1.7;
      white-space: pre-wrap;
      word-wrap: break-word;
    }

    .empty-messages {
      text-align: center;
      padding: 60px 20px;
      background: linear-gradient(135deg, #f7fafc 0%, #ffffff 100%);
      border-radius: 16px;
    }

    .empty-icon {
      font-size: 64px;
      display: block;
      margin-bottom: 20px;
    }

    .empty-messages p {
      font-size: 16px;
      color: #718096;
    }

    /* Responsive - Tablet */
    @media (max-width: 992px) {
      .hero-section {
        padding: 50px 30px;
      }

      .hero-title {
        font-size: 40px;
      }

      .hero-subtitle {
        font-size: 28px;
      }

      .section-title {
        font-size: 32px;
      }

      .feature-card {
        padding: 28px;
      }

      .workflow-step {
        padding: 24px;
        min-width: 200px;
      }
    }

    /* Responsive - Mobile */
    @media (max-width: 768px) {
      body .container {
        padding-left: 15px;
        padding-right: 15px;
      }

      .announcements-list-compact {
        padding: 12px 16px;
      }

      .announcement-item-compact {
        padding: 10px 12px;
        gap: 8px;
      }

      .announcement-title-compact {
        font-size: 13px;
      }

      .announcement-date-compact {
        display: none;
      }

      .hero-section {
        padding: 30px 20px;
        flex-direction: column;
        border-radius: 16px;
        margin-bottom: 30px;
      }

      .hero-badge {
        padding: 6px 12px;
        margin-bottom: 16px;
      }

      .badge-text {
        font-size: 12px;
      }

      .hero-title {
        font-size: 28px;
        margin-bottom: 12px;
      }

      .hero-subtitle {
        font-size: 20px;
      }

      .hero-description {
        font-size: 15px;
        max-width: 100%;
        margin: 16px 0 24px 0;
      }

      .hero-actions {
        flex-direction: column;
        width: 100%;
      }

      .btn-hero {
        width: 100%;
        justify-content: center;
        padding: 14px 24px;
      }

      .section-header {
        margin-bottom: 30px;
      }

      .section-title {
        font-size: 24px;
      }

      .section-subtitle {
        font-size: 15px;
      }

      .features-section {
        margin-bottom: 50px;
      }

      .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .feature-card {
        padding: 24px;
      }

      .feature-icon-wrapper {
        width: 56px;
        height: 56px;
        border-radius: 12px;
      }

      .feature-icon {
        font-size: 28px;
      }

      .feature-title {
        font-size: 18px;
      }

      .feature-description {
        font-size: 14px;
      }

      .workflow-section {
        padding: 30px 20px;
        border-radius: 16px;
        margin-bottom: 40px;
      }

      .workflow-steps {
        flex-direction: column;
        gap: 16px;
      }

      .workflow-step {
        max-width: 100%;
        min-width: 100%;
        padding: 24px 20px;
      }

      .step-number {
        width: 32px;
        height: 32px;
        font-size: 14px;
        top: -12px;
        left: 20px;
      }

      .step-icon {
        font-size: 36px;
      }

      .step-title {
        font-size: 17px;
      }

      .step-description {
        font-size: 13px;
      }

      .workflow-arrow {
        display: none;
      }

      .stats-section {
        margin-bottom: 40px;
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }

      .stat-card {
        padding: 20px 16px;
        border-radius: 12px;
      }

      .stat-icon {
        font-size: 36px;
        margin-bottom: 10px;
      }

      .stat-number {
        font-size: 20px;
      }

      .stat-label {
        font-size: 12px;
      }

      .cta-section {
        padding: 40px 20px;
        border-radius: 16px;
      }

      .cta-title {
        font-size: 24px;
      }

      .cta-description {
        font-size: 15px;
        margin-bottom: 24px;
      }

      .btn-cta {
        width: 100%;
        justify-content: center;
        padding: 14px 28px;
      }

      /* 留言板 */
      .message-input-container {
        padding: 20px;
        border-radius: 12px;
      }

      .message-input-wrapper {
        flex-direction: column;
        gap: 12px;
      }

      .user-avatar {
        width: 40px;
        height: 40px;
      }

      .input-group textarea {
        font-size: 16px; /* 防止 iOS 缩放 */
      }

      .message-card {
        padding: 16px;
        border-radius: 10px;
      }
    }

    /* Responsive - Small Mobile */
    @media (max-width: 480px) {
      .hero-section {
        padding: 24px 16px;
      }

      .hero-title {
        font-size: 24px;
      }

      .hero-subtitle {
        font-size: 18px;
      }

      .hero-description {
        font-size: 14px;
      }

      .section-title {
        font-size: 20px;
      }

      .feature-card {
        padding: 20px;
      }

      .feature-title {
        font-size: 16px;
      }

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

      .stat-card {
        padding: 16px 12px;
      }

      .stat-icon {
        font-size: 28px;
      }

      .stat-number {
        font-size: 16px;
      }

      .cta-title {
        font-size: 20px;
      }
    }