/* 多彩涂鸦风格基础变量设定 - 浅色明快底色与活力涂鸦色块 */
    :root {
      --bg-main: #faf8f5;
      --bg-card: #ffffff;
      --text-main: #14141e;
      --text-muted: #565668;
      --graffiti-yellow: #ffe600;
      --graffiti-pink: #ff2d78;
      --graffiti-cyan: #00d5d8;
      --graffiti-purple: #7928ca;
      --graffiti-orange: #ff6b00;
      --graffiti-green: #10b981;
      --border-dark: #181824;
      --shadow-solid: 4px 4px 0px #181824;
      --shadow-hover: 6px 6px 0px #181824;
      --radius-doodle: 16px;
      --container-width: 1200px;
      --transition-fast: 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      position: relative;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 230, 0, 0.12) 0%, transparent 20%),
        radial-gradient(circle at 90% 40%, rgba(255, 45, 120, 0.1) 0%, transparent 25%),
        radial-gradient(circle at 30% 80%, rgba(0, 213, 216, 0.1) 0%, transparent 25%);
      background-attachment: fixed;
    }

    /* 统一居中容器 */
    .app-container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 涂鸦通用组件 */
    .doodle-badge {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      padding: 4px 12px;
      border: 2px solid var(--border-dark);
      border-radius: 30px;
      background: var(--graffiti-yellow);
      box-shadow: 2px 2px 0px var(--border-dark);
      transform: rotate(-1.5deg);
      margin-bottom: 12px;
    }

    .doodle-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 12px;
      position: relative;
      display: inline-block;
    }

    .doodle-title::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -4px;
      width: 100%;
      height: 8px;
      background: var(--graffiti-cyan);
      opacity: 0.45;
      border-radius: 4px;
      z-index: -1;
      transform: rotate(-0.5deg);
    }

    .doodle-subtitle {
      color: var(--text-muted);
      font-size: 1rem;
      max-width: 680px;
      margin-bottom: 32px;
    }

    .section-header {
      text-align: center;
      margin-bottom: 40px;
    }

    .section-block {
      padding: 64px 0;
    }

    /* 涂鸦卡片基础 */
    .doodle-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-doodle);
      padding: 24px;
      box-shadow: var(--shadow-solid);
      transition: all var(--transition-fast);
      position: relative;
    }

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

    /* 按钮规范 */
    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 800;
      text-decoration: none;
      color: var(--text-main);
      background: var(--graffiti-yellow);
      border: 2px solid var(--border-dark);
      border-radius: 40px;
      box-shadow: var(--shadow-solid);
      transition: all var(--transition-fast);
      cursor: pointer;
    }

    .btn-main:hover {
      background: #ffd000;
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-hover);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 24px;
      font-size: 1rem;
      font-weight: 700;
      text-decoration: none;
      color: var(--text-main);
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 40px;
      box-shadow: var(--shadow-solid);
      transition: all var(--transition-fast);
      cursor: pointer;
    }

    .btn-secondary:hover {
      background: #f0f0f5;
      transform: translate(-2px, -2px);
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(250, 248, 245, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 2px solid var(--border-dark);
      padding: 12px 0;
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      color: var(--text-main);
    }

    .brand-logo-area img {
      max-height: 40px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.3rem;
      font-weight: 900;
      letter-spacing: -0.5px;
      background: var(--graffiti-pink);
      color: #ffffff;
      padding: 2px 8px;
      border-radius: 6px;
      border: 2px solid var(--border-dark);
      box-shadow: 2px 2px 0 var(--border-dark);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0; /* 严格满足样式要求 gap: 0 */
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 6px 10px;
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-main);
      text-decoration: none;
      border-radius: 8px;
      transition: background var(--transition-fast);
    }

    .nav-links li a:hover {
      background: var(--graffiti-yellow);
    }

    .nav-action-btn {
      padding: 8px 18px;
      font-size: 0.9rem;
    }

    /* 移动端菜单触发器 */
    .menu-toggle {
      display: none;
      background: var(--graffiti-yellow);
      border: 2px solid var(--border-dark);
      padding: 6px 12px;
      border-radius: 8px;
      font-weight: 800;
      cursor: pointer;
    }

    /* 首屏 HERO 区域 - 严格无图，纯CSS涂鸦科技感 */
    .hero-section {
      padding: 60px 0 50px;
      position: relative;
    }

    .hero-content {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-text h1 {
      font-size: 2.3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .hero-text h1 span {
      background: linear-gradient(120deg, var(--graffiti-pink), var(--graffiti-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      border-bottom: 4px solid var(--graffiti-yellow);
    }

    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      margin-bottom: 28px;
      line-height: 1.7;
    }

    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 28px;
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .hero-tag {
      font-size: 0.8rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 20px;
      border: 1.5px solid var(--border-dark);
      background: #ffffff;
    }

    /* 首屏纯CSS互动面板 */
    .hero-visual-card {
      background: #ffffff;
      border: 3px solid var(--border-dark);
      border-radius: 24px;
      padding: 24px;
      box-shadow: 8px 8px 0px var(--border-dark);
      position: relative;
    }

    .hero-visual-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 2px dashed var(--border-dark);
      padding-bottom: 12px;
      margin-bottom: 16px;
    }

    .dots-group {
      display: flex;
      gap: 6px;
    }

    .dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      border: 1.5px solid var(--border-dark);
    }
    .dot.red { background: var(--graffiti-pink); }
    .dot.yellow { background: var(--graffiti-yellow); }
    .dot.cyan { background: var(--graffiti-cyan); }

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

    .matrix-item {
      padding: 14px;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      background: #fafafc;
      transition: transform var(--transition-fast);
    }
    .matrix-item:hover {
      transform: scale(1.02);
      background: #fff9e6;
    }
    .matrix-item h4 {
      font-size: 0.95rem;
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .matrix-item p {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 数据指标栏 */
    .stats-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 30px;
    }

    .stat-card {
      text-align: center;
      padding: 20px 12px;
      border: 2px solid var(--border-dark);
      border-radius: 16px;
      background: #ffffff;
      box-shadow: 3px 3px 0 var(--border-dark);
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--graffiti-purple);
      line-height: 1;
      margin-bottom: 6px;
    }

    .stat-label {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--text-muted);
    }

    /* 服务能力与场景矩阵 (多分类卡片) */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

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

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

    .service-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 16px;
      padding: 20px;
      box-shadow: var(--shadow-solid);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card-top h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .service-card-top p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 12px;
    }

    .service-pill-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 8px;
    }

    .service-pill {
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 6px;
      background: #f0f3f8;
      border: 1px solid #d4d8e2;
    }

    /* 对比评测专属板块 */
    .review-score-banner {
      background: #fff;
      border: 3px solid var(--border-dark);
      border-radius: 20px;
      padding: 28px;
      box-shadow: 6px 6px 0 var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 28px;
    }

    .score-badge-huge {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-digits {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--graffiti-pink);
      line-height: 1;
      text-shadow: 2px 2px 0 var(--border-dark);
    }

    .score-meta h3 {
      font-size: 1.3rem;
      font-weight: 900;
    }

    .stars-render {
      color: #ff9900;
      font-size: 1.3rem;
    }

    .comparison-table-wrapper {
      overflow-x: auto;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 16px;
      box-shadow: var(--shadow-solid);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .compare-table th, .compare-table td {
      padding: 16px;
      border-bottom: 1px solid #eaeaea;
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #faf7f2;
      font-weight: 800;
      border-bottom: 2px solid var(--border-dark);
    }

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

    .highlight-col {
      background: rgba(255, 230, 0, 0.15);
      font-weight: 700;
    }

    /* 案例展示区（带图片） */
    .case-card {
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 16px;
      overflow: hidden;
      box-shadow: var(--shadow-solid);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f0f0f0;
      overflow: hidden;
      border-bottom: 2px solid var(--border-dark);
    }

    .case-img-wrap.square {
      aspect-ratio: 1 / 1;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }

    .case-body {
      padding: 18px;
    }

    .case-body h4 {
      font-size: 1.1rem;
      margin-bottom: 6px;
    }

    .case-body p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 流程步骤 */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-card {
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 16px;
      padding: 22px 16px;
      box-shadow: var(--shadow-solid);
      position: relative;
    }

    .step-num {
      width: 36px;
      height: 36px;
      background: var(--graffiti-cyan);
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      margin-bottom: 12px;
      box-shadow: 2px 2px 0 var(--border-dark);
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      box-shadow: 3px 3px 0 var(--border-dark);
      overflow: hidden;
    }

    .faq-question {
      padding: 16px 20px;
      font-weight: 800;
      font-size: 1rem;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      background: #fff;
    }

    .faq-question:hover {
      background: #fafafc;
    }

    .faq-icon {
      font-weight: 900;
      font-size: 1.2rem;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      padding: 0 20px 16px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      display: none;
      border-top: 1px dashed #eee;
      padding-top: 12px;
    }

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

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

    /* 需求匹配表单区 */
    .form-wrapper {
      background: #ffffff;
      border: 3px solid var(--border-dark);
      border-radius: 20px;
      padding: 32px;
      box-shadow: 6px 6px 0 var(--border-dark);
    }

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

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

    .form-label {
      display: block;
      font-weight: 700;
      margin-bottom: 6px;
      font-size: 0.9rem;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 2px solid var(--border-dark);
      border-radius: 10px;
      font-size: 0.95rem;
      outline: none;
      background: #fdfdfd;
      transition: border-color var(--transition-fast);
    }

    .form-control:focus {
      border-color: var(--graffiti-purple);
      background: #fff;
    }

    textarea.form-control {
      min-height: 100px;
      resize: vertical;
    }

    /* 客户评价板块 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 16px;
      padding: 20px;
      box-shadow: var(--shadow-solid);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-main);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      border-top: 1px dashed #eee;
      padding-top: 12px;
    }

    .reviewer-avatar-tag {
      width: 38px;
      height: 38px;
      background: var(--graffiti-yellow);
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 0.9rem;
    }

    .reviewer-name {
      font-weight: 800;
      font-size: 0.9rem;
    }

    .reviewer-role {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 联系我们与二维码 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 30px;
    }

    .contact-info-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 18px;
      padding: 24px;
      box-shadow: var(--shadow-solid);
    }

    .contact-item-row {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 0;
      border-bottom: 1px solid #f0f0f0;
    }

    .contact-item-row:last-child {
      border-bottom: none;
    }

    .contact-key {
      font-weight: 800;
      width: 110px;
      font-size: 0.92rem;
    }

    .contact-val {
      color: var(--text-muted);
      font-size: 0.92rem;
    }

    .qr-card {
      text-align: center;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 18px;
      padding: 24px;
      box-shadow: var(--shadow-solid);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    .qr-card img {
      max-width: 170px;
      border-radius: 10px;
      border: 2px solid var(--border-dark);
      margin-bottom: 12px;
    }

    /* 文章列表 & 友情链接 */
    .news-card-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .news-item-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 18px;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: 12px;
      text-decoration: none;
      color: var(--text-main);
      box-shadow: 2px 2px 0 var(--border-dark);
      transition: transform var(--transition-fast);
    }

    .news-item-row:hover {
      background: #fafafc;
      transform: translateX(4px);
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      padding: 16px;
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 14px;
    }

    .friend-links-box a {
      color: var(--text-main);
      text-decoration: none;
      font-size: 0.88rem;
      padding: 4px 12px;
      background: #f4f4f8;
      border-radius: 6px;
      font-weight: 600;
      transition: background var(--transition-fast);
    }

    .friend-links-box a:hover {
      background: var(--graffiti-yellow);
    }

    /* 页脚 */
    .site-footer {
      background: #14141e;
      color: #eaeaf2;
      border-top: 3px solid var(--border-dark);
      padding: 48px 0 24px;
      margin-top: 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 30px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1.1rem;
      margin-bottom: 14px;
      position: relative;
      padding-bottom: 6px;
    }

    .footer-col h4::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 32px;
      height: 3px;
      background: var(--graffiti-yellow);
    }

    .footer-col p {
      font-size: 0.88rem;
      color: #a0a0b2;
      line-height: 1.6;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links a {
      color: #a0a0b2;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color var(--transition-fast);
    }

    .footer-links a:hover {
      color: var(--graffiti-yellow);
    }

    .footer-bottom {
      border-top: 1px solid #2a2a3c;
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: #88889c;
    }

    /* 浮动侧边与回到顶部 */
    .floating-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      background: #ffffff;
      box-shadow: 3px 3px 0 var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      cursor: pointer;
      text-decoration: none;
      color: var(--text-main);
      transition: transform var(--transition-fast);
    }

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

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-content {
        grid-template-columns: 1fr;
      }
      .grid-4, .grid-3, .stats-bar, .step-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid, .contact-layout {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 2px solid var(--border-dark);
        flex-direction: column;
        padding: 16px 0;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .grid-4, .grid-3, .grid-2, .stats-bar, .step-grid, .reviews-grid, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .hero-text h1 {
        font-size: 1.8rem;
      }
    }