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

    body {
      font-family: 'Inter', sans-serif;
      background-color: #f9fafb;
      color: #111827;
      line-height: 1.5;
      scroll-behavior: smooth;
    }

    /* 容器宽度 */
    .container {
      max-width: 960px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.95rem;
      padding: 10px 24px;
      border-radius: 40px;
      text-decoration: none;
      transition: all 0.2s ease;
      cursor: pointer;
      border: none;
    }

    .btn-primary {
      background: #1f4f3c;
      color: white;
      box-shadow: 0 2px 8px rgba(31,79,60,0.2);
    }

    .btn-primary:hover {
      background: #0e3a2a;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(31,79,60,0.25);
    }

    .btn-outline {
      border: 1.5px solid #1f4f3c;
      color: #1f4f3c;
      background: transparent;
    }

    .btn-outline:hover {
      background: #eef6f2;
    }

    .btn-warning {
      background: #b45f1b;
      color: white;
      box-shadow: 0 2px 8px rgba(180,95,27,0.2);
    }

    .btn-warning:hover {
      background: #8e4a15;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(180,95,27,0.25);
    }

    /* Hero section - 调大了内边距和标题字号 */
    .hero {
      padding: 48px 0 40px;
      background: linear-gradient(135deg, #eef3f0 0%, #e2ece6 100%);
      border-bottom: 1px solid #cddbd4;
      text-align: center;
    }

    .hero h1 {
      font-size: 2.4rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 14px;
      color: #0a2a20;
    }

    .hero .subhead {
      font-size: 1rem;
      color: #2b4d3e;
      max-width: 500px;
      margin: 0 auto 20px;
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 16px;
    }

    .hero-badges span {
      font-size: 0.75rem;
      font-weight: 500;
      color: #1c4d38;
      background: #e0f0e8;
      padding: 4px 12px;
      border-radius: 30px;
    }

    /* Stock Sample Hero Card */
    .stock-sample-hero {
      background: white;
      border-radius: 24px;
      margin: -20px auto 32px;
      padding: 24px 28px;
      box-shadow: 0 20px 35px -12px rgba(0,0,0,0.1);
      border: 1px solid #e2ece6;
      text-align: center;
      max-width: 700px;
    }

    .free-badge {
      display: inline-block;
      background: #1f4f3c;
      color: white;
      font-weight: 800;
      font-size: 0.8rem;
      padding: 4px 14px;
      border-radius: 60px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .stock-sample-hero h2 {
      font-size: 1.6rem;
      font-weight: 800;
      color: #0a2a20;
      margin-bottom: 10px;
    }

    .stock-sample-hero .price {
      font-size: 2.2rem;
      font-weight: 800;
      color: #1f4f3c;
      margin-bottom: 4px;
    }

    .stock-sample-hero .price small {
      font-size: 0.85rem;
      font-weight: normal;
      color: #648e7a;
    }

    .stock-sample-hero .shipping-note {
      color: #7a8e82;
      margin-bottom: 18px;
      font-size: 0.8rem;
    }

    .cta-group {
      display: flex;
      gap: 14px;
      justify-content: center;
      flex-wrap: wrap;
      margin: 16px 0 0;
    }

    /* Feature grid */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
      margin: 32px 0;
    }

    .feature-card {
      background: white;
      border-radius: 20px;
      padding: 20px;
      text-align: center;
      border: 1px solid #edf2f0;
      transition: transform 0.2s;
    }

    .feature-card:hover {
      transform: translateY(-4px);
    }

    .feature-icon {
      font-size: 1.8rem;
      margin-bottom: 10px;
    }

    .feature-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: #0a2a20;
    }

    .feature-card p {
      color: #5a6e64;
      font-size: 0.8rem;
    }

    /* How it works */
    .steps-section {
      background: #f6faf8;
      border-radius: 24px;
      padding: 28px 24px;
      margin: 32px 0;
    }

    .section-title {
      text-align: center;
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 28px;
      color: #0a2a20;
    }

    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .step {
      text-align: center;
    }

    .step-number {
      width: 44px;
      height: 44px;
      background: #1f4f3c;
      color: white;
      font-size: 1.2rem;
      font-weight: 800;
      border-radius: 60px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
    }

    .step h4 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .step p {
      color: #5a6e64;
      font-size: 0.8rem;
    }

    /* Custom Sample Section */
    .custom-sample-section {
      background: #fefcf8;
      border-radius: 24px;
      padding: 28px;
      margin: 32px 0;
      border: 1px solid #f0e8dc;
    }

    .custom-sample-section h3 {
      font-size: 1.3rem;
      font-weight: 700;
      color: #b45f1b;
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .custom-sample-section .sub {
      color: #a0825a;
      margin-bottom: 20px;
      font-size: 0.85rem;
    }

    .custom-features {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 16px;
      margin-bottom: 20px;
    }

    .custom-feature {
      background: white;
      border-radius: 16px;
      padding: 16px;
      border: 1px solid #efe4d8;
    }

    .custom-feature h4 {
      font-weight: 700;
      margin-bottom: 4px;
      font-size: 0.9rem;
    }

    .custom-feature p {
      font-size: 0.8rem;
      color: #6b5a48;
    }

    /* Artwork Guidelines Button */
    .artwork-btn-container {
      text-align: center;
      margin: 16px 0 12px;
    }

    /* Form */
    .form-section {
      background: white;
      border-radius: 24px;
      padding: 28px;
      margin: 32px 0;
      box-shadow: 0 8px 25px rgba(0,0,0,0.05);
      border: 1px solid #e2ece6;
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .form-input, .form-select, .form-textarea {
      padding: 10px 14px;
      border-radius: 10px;
      border: 1px solid #d0dbd4;
      font-family: inherit;
      font-size: 0.85rem;
      width: 100%;
      background: #fefefe;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: #1f4f3c;
    }

    .form-textarea {
      border-radius: 12px;
      resize: vertical;
    }

    /* Form Actions */
    .form-actions-row {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-top: 8px;
    }

    .form-submit-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
    }

    .member-signin-area {
      display: flex;
      align-items: center;
      gap: 5px;
      font-size: 0.75rem;
    }

    .member-signin-text {
      color: #5a6e64;
    }

    .member-link {
      background: none;
      border: none;
      color: #1f4f3c;
      font-weight: 600;
      font-size: 0.75rem;
      cursor: pointer;
      padding: 5px 8px;
      border-radius: 40px;
      transition: all 0.2s;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .member-link:hover {
      background: #eef6f2;
      text-decoration: underline;
    }

    .form-submit-note {
      font-size: 0.65rem;
      color: #8ba395;
      margin-top: 12px;
    }

    /* FAQ */
    .faq-section {
      margin: 32px 0;
    }

    .faq-item {
      background: white;
      border-radius: 16px;
      padding: 14px 20px;
      margin-bottom: 10px;
      border: 1px solid #eef2f0;
    }

    .faq-question {
      font-weight: 700;
      font-size: 0.9rem;
      margin-bottom: 4px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question::after {
      content: "▼";
      font-size: 0.65rem;
      color: #8ba395;
      transition: transform 0.2s;
    }

    .faq-item.open .faq-question::after {
      transform: rotate(180deg);
    }

    .faq-answer {
      color: #5a6e64;
      line-height: 1.5;
      padding-top: 8px;
      display: none;
      font-size: 0.8rem;
    }

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

    .faq-answer ul {
      margin-top: 5px;
      padding-left: 16px;
    }

    .faq-answer li {
      margin: 3px 0;
    }

    /* CTA Bottom */
    .cta-bottom {
      text-align: center;
      background: #1f4f3c;
      border-radius: 24px;
      padding: 28px 24px;
      margin: 28px 0 40px;
      color: white;
    }

    .cta-bottom h3 {
      font-size: 1.3rem;
      margin-bottom: 10px;
    }

    .cta-bottom p {
      font-size: 0.85rem;
      margin-bottom: 18px;
      opacity: 0.9;
    }

    .cta-bottom .btn-outline-light {
      border: 2px solid white;
      color: white;
      background: transparent;
      padding: 8px 24px;
      font-size: 0.85rem;
    }

    .cta-bottom .btn-outline-light:hover {
      background: rgba(255,255,255,0.1);
    }

    footer {
      padding: 20px 0 32px;
      text-align: center;
      color: #8ba395;
      font-size: 0.7rem;
    }

    .success-message {
      background: #d4edda;
      color: #155724;
      padding: 10px 16px;
      border-radius: 60px;
      margin-bottom: 18px;
      text-align: center;
      display: none;
      font-size: 0.8rem;
    }

    /* Modal Styles */
    .modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.6);
      align-items: center;
      justify-content: center;
      z-index: 1000;
    }

    .modal.active {
      display: flex;
    }

    .modal-content {
      background: white;
      border-radius: 24px;
      max-width: 700px;
      width: 90%;
      max-height: 85vh;
      overflow-y: auto;
      position: relative;
      padding: 28px 32px;
    }

    .modal-content h2 {
      font-size: 1.5rem;
      font-weight: 700;
      color: #b45f1b;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 2px solid #f0e8dc;
    }

    .modal-content h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #1f4f3c;
      margin: 18px 0 8px 0;
    }

    .modal-content h3:first-of-type {
      margin-top: 0;
    }

    .modal-content p {
      color: #4a5e55;
      font-size: 0.85rem;
      line-height: 1.5;
      margin-bottom: 10px;
    }

    .modal-content ul {
      margin: 8px 0 12px 20px;
    }

    .modal-content li {
      color: #4a5e55;
      font-size: 0.85rem;
      margin: 4px 0;
    }

    .format-badges {
      display: flex;
      gap: 12px;
      margin: 8px 0;
    }

    .format-badge {
      background: #f0e7db;
      color: #9b5a2a;
      padding: 4px 14px;
      border-radius: 40px;
      font-weight: 600;
      font-size: 0.8rem;
    }

    .modal-close {
      position: sticky;
      top: 0;
      float: right;
      font-size: 1.8rem;
      cursor: pointer;
      color: #8ba395;
      background: white;
      padding: 0 8px;
      margin: -20px -20px 0 0;
      transition: color 0.2s;
    }

    .modal-close:hover {
      color: #b45f1b;
    }

    .guideline-note {
      background: #fef8e7;
      padding: 12px 16px;
      border-radius: 12px;
      margin: 16px 0 0;
      font-size: 0.8rem;
      color: #9e7618;
    }

    @media (max-width: 768px) {
      /* 移动端 Hero 区域也相应调大 */
      .hero {
        padding: 36px 0 30px;
      }
      .hero h1 { font-size: 1.8rem; }
      .hero { padding: 20px 0 16px; }
      .stock-sample-hero { padding: 18px; margin-top: -12px; }
      .stock-sample-hero h2 { font-size: 1.2rem; }
      .steps-grid { grid-template-columns: 1fr; gap: 16px; }
      .form-grid { grid-template-columns: 1fr; }
      .steps-section { padding: 20px 16px; }
      .custom-sample-section { padding: 20px 16px; }
      .form-section { padding: 20px 16px; }
      .form-actions-row { flex-direction: column; align-items: stretch; }
      .form-submit-group { justify-content: center; }
      .member-signin-area { justify-content: center; margin-top: 6px; }
      .modal-content { padding: 20px; }
    }