:root {
      --c-bg: #faf7f2;
      --c-card-bg: #ffffff;
      --c-primary: #ff4d6d;
      --c-secondary: #06d6a0;
      --c-accent: #ffb703;
      --c-blue: #118ab2;
      --c-purple: #7209b7;
      --c-text: #212529;
      --c-text-muted: #5c677d;
      --c-border: #1e1e24;
      --border-thick: 2.5px solid var(--c-border);
      --shadow-doodle: 4px 4px 0px var(--c-border);
      --shadow-doodle-lg: 7px 7px 0px var(--c-border);
      --shadow-doodle-sm: 2px 2px 0px var(--c-border);
      --radius-doodle: 16px;
      --radius-sm: 10px;
      --radius-pill: 9999px;
      --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-main);
      background-color: var(--c-bg);
      background-image: 
        radial-gradient(#1e1e24 0.75px, transparent 0.75px),
        radial-gradient(#ffb703 0.75px, #faf7f2 0.75px);
      background-size: 32px 32px;
      background-position: 0 0, 16px 16px;
      color: var(--c-text);
      line-height: 1.65;
      font-size: 16px;
      overflow-x: hidden;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .doodle-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: var(--radius-pill);
      border: var(--border-thick);
      background-color: var(--c-accent);
      color: var(--c-text);
      font-weight: 800;
      font-size: 13px;
      letter-spacing: 0.5px;
      box-shadow: var(--shadow-doodle-sm);
      transform: rotate(-1.5deg);
      margin-bottom: 12px;
    }

    .badge-pink { background-color: #ffccd5; }
    .badge-cyan { background-color: #cbf3f0; }
    .badge-yellow { background-color: #ffeedb; }
    .badge-green { background-color: #d8f3dc; }
    .badge-purple { background-color: #e0aaff; }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(250, 247, 242, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: var(--border-thick);
      box-shadow: 0 4px 0 rgba(0, 0, 0, 0.04);
    }

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

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

    .brand-wrap .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
      border: 2px solid var(--c-border);
      border-radius: 8px;
      background: #fff;
      padding: 2px;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 900;
      color: var(--c-border);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 11px;
      background: var(--c-accent);
      padding: 2px 8px;
      border-radius: 6px;
      border: 1.5px solid var(--c-border);
      font-weight: 700;
      display: inline-block;
    }

    .nav-menu {
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li {
      margin: 0;
      padding: 0;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 11px;
      font-weight: 700;
      font-size: 14px;
      color: var(--c-text);
      border-radius: 8px;
    }

    .nav-links a:hover,
    .nav-links a.active {
      background-color: #ffe5ec;
      color: var(--c-primary);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 14px;
    }

    .btn-doodle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 800;
      font-size: 14px;
      padding: 10px 20px;
      border-radius: var(--radius-pill);
      border: var(--border-thick);
      cursor: pointer;
      box-shadow: var(--shadow-doodle);
      transition: transform 0.15s ease, box-shadow 0.15s ease;
      text-align: center;
      white-space: nowrap;
    }

    .btn-doodle:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-doodle-lg);
    }

    .btn-doodle:active {
      transform: translate(2px, 2px);
      box-shadow: 1px 1px 0px var(--c-border);
    }

    .btn-primary {
      background-color: var(--c-primary);
      color: #fff;
    }

    .btn-accent {
      background-color: var(--c-accent);
      color: var(--c-text);
    }

    .btn-secondary {
      background-color: var(--c-secondary);
      color: var(--c-text);
    }

    .btn-light {
      background-color: #fff;
      color: var(--c-text);
    }

    .nav-toggle {
      display: none;
      background: #fff;
      border: var(--border-thick);
      padding: 6px 10px;
      border-radius: 8px;
      font-size: 20px;
      cursor: pointer;
      font-weight: 900;
      box-shadow: var(--shadow-doodle-sm);
    }

    .hero-section {
      padding: 56px 0 48px;
      position: relative;
    }

    .hero-card {
      background-color: #fff;
      border: var(--border-thick);
      border-radius: 24px;
      padding: 48px 40px;
      box-shadow: var(--shadow-doodle-lg);
      position: relative;
      overflow: hidden;
    }

    .hero-stripes {
      position: absolute;
      top: 0;
      right: 0;
      width: 140px;
      height: 140px;
      background: repeating-linear-gradient(45deg, #fceade, #fceade 10px, #ffffff 10px, #ffffff 20px);
      border-left: var(--border-thick);
      border-bottom: var(--border-thick);
      border-bottom-left-radius: 40px;
      pointer-events: none;
    }

    .hero-content {
      max-width: 920px;
      position: relative;
      z-index: 2;
    }

    .hero-content h1 {
      font-size: 40px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--c-border);
      letter-spacing: -1px;
      margin-bottom: 18px;
    }

    .hero-sub {
      font-size: 18px;
      color: var(--c-text-muted);
      line-height: 1.7;
      margin-bottom: 28px;
      font-weight: 500;
    }

    .hero-sub strong {
      color: var(--c-border);
      background: #fff0f3;
      padding: 2px 6px;
      border-radius: 4px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }

    .btn-hero-main {
      font-size: 17px;
      padding: 14px 34px;
      background-color: #ff3366;
      color: #fff;
    }

    .hero-tags-wall {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 24px;
      padding-top: 24px;
      border-top: 2px dashed #e2e8f0;
    }

    .tag-item {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      background: #f1f5f9;
      border: 1.5px solid var(--c-border);
      border-radius: var(--radius-pill);
      color: var(--c-text);
      box-shadow: 1px 1px 0px var(--c-border);
    }

    .stat-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 32px;
    }

    .stat-box {
      background: #fff;
      border: var(--border-thick);
      border-radius: var(--radius-doodle);
      padding: 20px;
      box-shadow: var(--shadow-doodle);
      text-align: center;
      transition: transform 0.2s ease;
    }

    .stat-box:hover {
      transform: translateY(-4px);
    }

    .stat-box .num {
      font-size: 34px;
      font-weight: 900;
      color: var(--c-border);
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .stat-box .label {
      font-size: 13px;
      font-weight: 700;
      color: var(--c-text-muted);
    }

    .section-wrap {
      padding: 48px 0;
    }

    .section-header {
      margin-bottom: 36px;
      text-align: center;
    }

    .section-title {
      font-size: 30px;
      font-weight: 900;
      color: var(--c-border);
      letter-spacing: -0.5px;
      margin-bottom: 8px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--c-text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    .doodle-card {
      background: #fff;
      border: var(--border-thick);
      border-radius: var(--radius-doodle);
      box-shadow: var(--shadow-doodle);
      padding: 28px;
      position: relative;
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

    .doodle-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-doodle-lg);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 28px;
      align-items: center;
    }

    .about-left h3 {
      font-size: 24px;
      font-weight: 900;
      margin-bottom: 16px;
      color: var(--c-border);
    }

    .feature-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }

    .feature-list li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 14px;
      background: #f8f9fa;
      border: 1.5px solid var(--c-border);
      padding: 8px 12px;
      border-radius: 8px;
    }

    .feature-list li span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--c-secondary);
      border: 1px solid var(--c-border);
      font-size: 11px;
      font-weight: 900;
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .service-card h3 {
      font-size: 20px;
      font-weight: 800;
      margin: 12px 0 8px;
      color: var(--c-border);
    }

    .service-card p {
      font-size: 14px;
      color: var(--c-text-muted);
      line-height: 1.6;
    }

    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      border: var(--border-thick);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      box-shadow: var(--shadow-doodle-sm);
    }

    .icon-pink { background: #ff70a6; }
    .icon-yellow { background: #ffd166; }
    .icon-green { background: #06d6a0; }
    .icon-blue { background: #118ab2; color: #fff; }
    .icon-purple { background: #b5179e; color: #fff; }
    .icon-orange { background: #f77f00; color: #fff; }

    .matrix-item {
      background: #fff;
      border: var(--border-thick);
      border-radius: 14px;
      padding: 16px 18px;
      box-shadow: var(--shadow-doodle-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .matrix-item h4 {
      font-size: 16px;
      font-weight: 900;
      margin-bottom: 6px;
      color: var(--c-border);
    }

    .matrix-item p {
      font-size: 13px;
      color: var(--c-text-muted);
      line-height: 1.5;
    }

    .media-card-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: 10px;
      border: 2px solid var(--c-border);
      margin-bottom: 14px;
      display: block;
    }

    .media-card-sq {
      width: 100%;
      height: 260px;
      object-fit: cover;
      border-radius: 10px;
      border: 2px solid var(--c-border);
      margin-bottom: 14px;
      display: block;
    }

    .step-badge {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--c-accent);
      border: var(--border-thick);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 16px;
      box-shadow: var(--shadow-doodle-sm);
      margin-bottom: 12px;
    }

    .rating-banner {
      background: linear-gradient(135deg, #fff3b0 0%, #ffeedb 100%);
      border: var(--border-thick);
      border-radius: 20px;
      padding: 30px;
      box-shadow: var(--shadow-doodle);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 28px;
    }

    .rating-left h3 {
      font-size: 26px;
      font-weight: 900;
      color: var(--c-border);
      margin-bottom: 6px;
    }

    .rating-stars {
      color: #e63946;
      font-size: 22px;
      letter-spacing: 2px;
      font-weight: 900;
    }

    .rating-score {
      font-size: 46px;
      font-weight: 900;
      color: var(--c-border);
      line-height: 1;
    }

    .rating-score small {
      font-size: 18px;
      color: var(--c-text-muted);
    }

    .table-container {
      overflow-x: auto;
      background: #fff;
      border: var(--border-thick);
      border-radius: var(--radius-doodle);
      box-shadow: var(--shadow-doodle);
    }

    .doodle-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 620px;
    }

    .doodle-table th, 
    .doodle-table td {
      padding: 14px 18px;
      border-bottom: 1.5px solid #e2e8f0;
      font-size: 14px;
    }

    .doodle-table th {
      background-color: #f8f9fa;
      font-weight: 800;
      color: var(--c-border);
    }

    .doodle-table tr:hover td {
      background-color: #fff9fa;
    }

    .doodle-table .hl {
      color: #ff0054;
      font-weight: 800;
    }

    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #fff;
      border: var(--border-thick);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: var(--shadow-doodle-sm);
      transition: all 0.2s ease;
    }

    .faq-header {
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-weight: 800;
      font-size: 15px;
      background: #fff;
      user-select: none;
    }

    .faq-header:hover {
      background: #fff5f5;
    }

    .faq-arrow {
      font-size: 18px;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

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

    .faq-body {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
      font-size: 14px;
      color: var(--c-text-muted);
      line-height: 1.6;
      background: #fbfbfb;
      border-top: 0px solid transparent;
    }

    .faq-item.active .faq-body {
      padding: 16px 20px;
      max-height: 400px;
      border-top: 1.5px dashed #e2e8f0;
    }

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

    .avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--c-accent);
      border: var(--border-thick);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 16px;
      box-shadow: var(--shadow-doodle-sm);
    }

    .review-content {
      font-size: 14px;
      color: var(--c-text);
      line-height: 1.6;
      font-weight: 500;
    }

    .form-wrap {
      background: #fff;
      border: var(--border-thick);
      border-radius: 20px;
      padding: 36px;
      box-shadow: var(--shadow-doodle-lg);
      max-width: 820px;
      margin: 0 auto;
    }

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

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group.full {
      grid-column: span 2;
    }

    .form-label {
      font-size: 13px;
      font-weight: 800;
      color: var(--c-border);
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border-radius: 10px;
      border: var(--border-thick);
      font-size: 14px;
      font-family: inherit;
      background: #fafafa;
      transition: border-color 0.2s ease, background 0.2s ease;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--c-primary);
      background: #fff;
      box-shadow: 0 0 0 3px rgba(255, 77, 109, 0.2);
    }

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

    .contact-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .qr-card {
      text-align: center;
      padding: 24px;
      background: #fff;
      border: var(--border-thick);
      border-radius: var(--radius-doodle);
      box-shadow: var(--shadow-doodle);
    }

    .qr-card img {
      width: 140px;
      height: 140px;
      border: var(--border-thick);
      border-radius: 12px;
      display: block;
      margin: 12px auto;
    }

    .article-link-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }

    .article-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 18px;
      background: #fff;
      border: var(--border-thick);
      border-radius: 10px;
      box-shadow: var(--shadow-doodle-sm);
      font-weight: 700;
      font-size: 14px;
    }

    .article-item:hover {
      background: #fff0f5;
      transform: translateX(4px);
    }

    .site-footer {
      background-color: #ffffff;
      border-top: var(--border-thick);
      padding: 40px 0 24px;
      margin-top: 56px;
      color: var(--c-text);
    }

    .footer-inner {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      padding: 16px 20px;
      background: #f8f9fa;
      border: var(--border-thick);
      border-radius: 12px;
    }

    .friend-links-box span {
      font-weight: 800;
      font-size: 13px;
      margin-right: 6px;
    }

    .friend-links-box a {
      font-size: 13px;
      color: var(--c-blue);
      font-weight: 700;
      background: #fff;
      padding: 4px 10px;
      border-radius: 6px;
      border: 1.5px solid var(--c-border);
    }

    .friend-links-box a:hover {
      background: var(--c-primary);
      color: #fff;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      padding-top: 16px;
      border-top: 1.5px dashed #cbd5e1;
      font-size: 13px;
      color: var(--c-text-muted);
      font-weight: 600;
    }

    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      background: #fff;
      border: var(--border-thick);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      box-shadow: var(--shadow-doodle);
      cursor: pointer;
      transition: transform 0.2s ease;
    }

    .float-btn:hover {
      transform: scale(1.1);
      background: var(--c-accent);
    }

    @media (max-width: 992px) {
      .header-inner {
        position: relative;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: var(--border-thick);
        padding: 20px;
        flex-direction: column;
        align-items: stretch;
        box-shadow: 0 10px 15px rgba(0,0,0,0.05);
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links a {
        display: block;
        padding: 10px 12px;
        width: 100%;
      }
      .nav-cta {
        margin-left: 0;
        margin-top: 14px;
        flex-direction: column;
      }
      .nav-cta a {
        width: 100%;
      }
      .nav-toggle {
        display: block;
      }
      .stat-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-card-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 640px) {
      .hero-card {
        padding: 30px 20px;
      }
      .hero-content h1 {
        font-size: 28px;
      }
      .stat-bar-grid {
        grid-template-columns: 1fr;
      }
      .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .feature-list {
        grid-template-columns: 1fr;
      }
      .form-wrap {
        padding: 24px 16px;
      }
      .rating-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }