:root {
      --candy-pink: #ff5e89;
      --candy-purple: #7952ff;
      --candy-blue: #00b4d8;
      --candy-cyan: #06d6a0;
      --candy-yellow: #ffb703;
      --candy-bg: #faf7ff;
      --candy-card-bg: #ffffff;
      --candy-border: #ede4ff;
      --text-main: #1f1b2e;
      --text-muted: #5e5975;
      --text-light: #8f8ba3;
      --primary-gradient: linear-gradient(135deg, #ff5e89 0%, #7952ff 50%, #00b4d8 100%);
      --accent-gradient: linear-gradient(135deg, #ffb703 0%, #ff5e89 100%);
      --soft-gradient: linear-gradient(180deg, #f7f3ff 0%, #ffffff 100%);
      --shadow-sm: 0 4px 14px rgba(121, 82, 255, 0.08);
      --shadow-md: 0 10px 28px rgba(121, 82, 255, 0.12);
      --shadow-lg: 0 20px 40px rgba(121, 82, 255, 0.16);
      --radius-sm: 10px;
      --radius-md: 18px;
      --radius-lg: 26px;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--candy-bg);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      font-size: 16px;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    ul, ol {
      list-style: none;
    }

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

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--candy-border);
      box-shadow: 0 2px 12px rgba(121, 82, 255, 0.05);
    }

    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-group {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      max-width: 100%;
      display: block;
    }

    .brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 10px 14px;
      border-radius: 20px;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--candy-purple);
      background: rgba(121, 82, 255, 0.08);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 30px;
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
      border: none;
      text-align: center;
      white-space: nowrap;
    }

    .btn-candy {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 6px 18px rgba(255, 94, 137, 0.35);
    }

    .btn-candy:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(121, 82, 255, 0.4);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      border: 2px solid var(--candy-purple);
      color: var(--candy-purple);
    }

    .btn-outline:hover {
      background: var(--candy-purple);
      color: #ffffff;
      transform: translateY(-2px);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Hero Section (No images allowed) */
    .hero-section {
      position: relative;
      padding: 85px 0 65px;
      background: radial-gradient(circle at 10% 20%, rgba(255, 94, 137, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(0, 180, 216, 0.1) 0%, transparent 45%),
                  radial-gradient(circle at 50% 50%, rgba(121, 82, 255, 0.06) 0%, transparent 50%),
                  #ffffff;
      border-bottom: 1px solid var(--candy-border);
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 18px;
      background: rgba(255, 94, 137, 0.12);
      border: 1px solid rgba(255, 94, 137, 0.25);
      border-radius: 50px;
      color: var(--candy-pink);
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 22px;
      animation: floatBadge 3s ease-in-out infinite alternate;
    }

    @keyframes floatBadge {
      0% { transform: translateY(0); }
      100% { transform: translateY(-4px); }
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 34px;
      font-weight: 500;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 45px;
      flex-wrap: wrap;
    }

    .btn-hero-primary {
      padding: 15px 36px;
      font-size: 1.1rem;
      border-radius: 40px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 800;
      box-shadow: 0 8px 25px rgba(121, 82, 255, 0.35);
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 30px rgba(255, 94, 137, 0.45);
      color: #ffffff;
    }

    .hero-chips {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 900px;
      margin: 0 auto;
    }

    .chip-item {
      padding: 6px 14px;
      background: #ffffff;
      border: 1px solid var(--candy-border);
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--candy-purple);
      box-shadow: var(--shadow-sm);
    }

    /* Metrics Bar */
    .metrics-bar {
      padding: 40px 0;
      background: #ffffff;
      border-bottom: 1px solid var(--candy-border);
    }

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

    .metric-card {
      padding: 24px;
      background: var(--candy-bg);
      border: 1px solid var(--candy-border);
      border-radius: var(--radius-md);
      text-align: center;
      transition: var(--transition);
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--candy-purple);
    }

    .metric-num {
      font-size: 2.2rem;
      font-weight: 900;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-desc {
      font-size: 0.82rem;
      color: var(--text-light);
    }

    /* Shared Section Styles */
    .section-wrap {
      padding: 75px 0;
    }

    .section-head {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      background: rgba(121, 82, 255, 0.1);
      border-radius: 20px;
      color: var(--candy-purple);
      font-size: 0.85rem;
      font-weight: 800;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.35;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
    }

    /* Cards & Grids */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

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

    .card {
      background: #ffffff;
      border: 1px solid var(--candy-border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--candy-pink);
    }

    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(255, 94, 137, 0.15), rgba(121, 82, 255, 0.15));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 20px;
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-tag {
      margin-top: 16px;
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 8px;
      background: rgba(0, 180, 216, 0.1);
      color: var(--candy-blue);
      align-self: flex-start;
    }

    /* Media Banner Grid */
    .media-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-top: 35px;
    }

    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--candy-border);
      box-shadow: var(--shadow-sm);
    }

    .media-card-img-wrap {
      aspect-ratio: 16 / 9;
      width: 100%;
      overflow: hidden;
      background: #f0ecf9;
    }

    .media-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: var(--transition);
    }

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

    .media-card-content {
      padding: 22px;
    }

    .media-card-title {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .media-card-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Comparison Table Section */
    .table-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--candy-border);
      box-shadow: var(--shadow-md);
      overflow-x: auto;
      padding: 20px;
    }

    .compare-score-board {
      display: flex;
      align-items: center;
      justify-content: space-around;
      background: linear-gradient(135deg, rgba(255, 94, 137, 0.08), rgba(121, 82, 255, 0.08));
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 24px;
      border: 1px dashed var(--candy-purple);
      flex-wrap: wrap;
      gap: 16px;
    }

    .score-item {
      text-align: center;
    }

    .score-label {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .score-value {
      font-size: 2rem;
      font-weight: 900;
      color: var(--candy-pink);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--candy-border);
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #faf7ff;
      color: var(--text-main);
      font-weight: 800;
    }

    .compare-table td:nth-child(2) {
      background: rgba(121, 82, 255, 0.03);
      font-weight: 700;
      color: var(--candy-purple);
    }

    /* Workflow Steps */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-box {
      background: #ffffff;
      border: 1px solid var(--candy-border);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-number {
      width: 44px;
      height: 44px;
      line-height: 44px;
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      margin: 0 auto 16px;
      font-size: 1.1rem;
      box-shadow: 0 4px 12px rgba(255, 94, 137, 0.3);
    }

    .step-title {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Model Cloud */
    .model-cloud {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 35px;
      border: 1px solid var(--candy-border);
      box-shadow: var(--shadow-sm);
      text-align: center;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 20px;
    }

    .model-badge {
      padding: 8px 18px;
      background: #fbf9ff;
      border: 1px solid var(--candy-border);
      border-radius: 30px;
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-main);
      transition: var(--transition);
    }

    .model-badge:hover {
      background: var(--candy-purple);
      color: #ffffff;
      border-color: var(--candy-purple);
      transform: translateY(-2px);
    }

    /* Testimonials */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--candy-border);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-stars {
      color: #ffb703;
      margin-bottom: 12px;
      font-size: 1.1rem;
    }

    .review-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      font-style: italic;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f2edf8;
      padding-top: 14px;
    }

    .user-avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--soft-gradient);
      border: 2px solid var(--candy-pink);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: var(--candy-purple);
      font-size: 1rem;
    }

    .user-info h4 {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .user-info p {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--candy-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.3rem;
      color: var(--candy-purple);
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--candy-pink);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #faf8fd;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px 22px;
      border-top: 1px solid #f0eaf8;
    }

    .faq-answer p {
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Form Section */
    .contact-card-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--candy-border);
      box-shadow: var(--shadow-md);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      overflow: hidden;
    }

    .contact-info-panel {
      background: linear-gradient(145deg, #7952ff 0%, #ff5e89 100%);
      color: #ffffff;
      padding: 45px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-panel h3 {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .contact-info-panel p {
      font-size: 0.95rem;
      opacity: 0.92;
      line-height: 1.6;
    }

    .contact-details {
      margin: 30px 0;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
    }

    .contact-item-icon {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }

    .qr-group {
      text-align: center;
      background: rgba(255, 255, 255, 0.15);
      padding: 16px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
    }

    .qr-group img {
      width: 130px;
      height: 130px;
      border-radius: 10px;
      background: #fff;
      display: block;
      margin: 0 auto 8px;
      object-fit: cover;
    }

    .form-panel {
      padding: 45px;
      background: #ffffff;
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: 12px;
      border: 1.5px solid var(--candy-border);
      font-size: 0.95rem;
      color: var(--text-main);
      transition: var(--transition);
      background: #faf8fd;
      outline: none;
    }

    .form-control:focus {
      border-color: var(--candy-purple);
      background: #ffffff;
      box-shadow: 0 0 0 4px rgba(121, 82, 255, 0.12);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* Articles Showcase */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .article-box {
      background: #ffffff;
      border: 1px solid var(--candy-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
    }

    .article-meta {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 12px;
    }

    .article-link {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--candy-purple);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .article-link:hover {
      color: var(--candy-pink);
    }

    /* Links & Footer */
    .links-bar {
      background: #ffffff;
      border-top: 1px solid var(--candy-border);
      padding: 30px 0;
    }

    .friend-links-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px 20px;
    }

    .friend-links-list a {
      font-size: 0.88rem;
      color: var(--text-muted);
      background: #f7f4fc;
      padding: 5px 12px;
      border-radius: 6px;
      border: 1px solid #eee8f8;
    }

    .friend-links-list a:hover {
      color: var(--candy-purple);
      border-color: var(--candy-purple);
    }

    .site-footer {
      background: #171422;
      color: #b5b0cb;
      padding: 55px 0 35px;
      font-size: 0.9rem;
    }

    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 35px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .footer-desc {
      line-height: 1.7;
      margin-bottom: 16px;
      max-width: 440px;
    }

    .footer-list li {
      margin-bottom: 10px;
    }

    .footer-list a {
      color: #b5b0cb;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
      text-align: center;
      font-size: 0.82rem;
      color: #7d7895;
    }

    /* Floating Widget */
    .floating-tools {
      position: fixed;
      right: 22px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--candy-border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--candy-purple);
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }

    .float-btn:hover {
      background: var(--candy-purple);
      color: #ffffff;
      transform: scale(1.08);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-4, .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .reviews-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-card-box {
        grid-template-columns: 1fr;
      }
      .footer-content {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 2.3rem;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid var(--candy-border);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 12px;
      }
      .header-actions {
        display: none;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .grid-3, .grid-4, .steps-grid, .reviews-grid, .articles-grid, .media-showcase {
        grid-template-columns: 1fr;
      }
      .footer-content {
        grid-template-columns: 1fr;
      }
      .contact-info-panel, .form-panel {
        padding: 26px;
      }
    }