:root {
      --primary-yellow: #f59e0b;
      --yellow-bright: #fbbf24;
      --yellow-light: #fef3c7;
      --yellow-subtle: #fffbeb;
      --yellow-glow: rgba(245, 158, 11, 0.25);
      --dark-title: #0f172a;
      --dark-body: #334155;
      --dark-muted: #64748b;
      --card-bg: #ffffff;
      --page-bg: #fdfbf7;
      --border-color: #f1e4cb;
      --border-focus: #f59e0b;
      --shadow-sm: 0 2px 8px rgba(245, 158, 11, 0.08);
      --shadow-md: 0 10px 25px -5px rgba(217, 119, 6, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 20px 35px -10px rgba(217, 119, 6, 0.2);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition-fast: 0.2s ease;
      --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--page-bg);
      color: var(--dark-body);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: 
        radial-gradient(circle at 10% 20%, rgba(251, 191, 36, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(245, 158, 11, 0.06) 0%, transparent 40%);
      background-attachment: fixed;
    }

    /* 统一居中主容器 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid var(--yellow-bright);
      box-shadow: 0 2px 15px rgba(245, 158, 11, 0.08);
      transition: var(--transition-normal);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-area .ai-page-logo {
      height: 42px;
      width: auto;
      object-fit: contain;
      display: block;
    }

    .brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--dark-title);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .brand-badge {
      background: linear-gradient(135deg, #f59e0b, #d97706);
      color: #ffffff;
      font-size: 0.7rem;
      padding: 2px 8px;
      border-radius: 20px;
      font-weight: 600;
      letter-spacing: 0.5px;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      color: var(--dark-title);
      font-weight: 600;
      font-size: 0.92rem;
      text-decoration: none;
      border-radius: var(--radius-sm);
      transition: var(--transition-fast);
      white-space: nowrap;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #b45309;
      background-color: var(--yellow-light);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
      color: #78350f;
      font-weight: 700;
      font-size: 0.9rem;
      padding: 9px 20px;
      border-radius: 30px;
      text-decoration: none;
      box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
      border: 1px solid #fcd34d;
      transition: var(--transition-normal);
      white-space: nowrap;
    }

    .btn-portal:hover {
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(217, 119, 6, 0.4);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--dark-title);
    }

    /* Section 通用规范 */
    section {
      padding: 70px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 48px auto;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      color: #b45309;
      background: var(--yellow-light);
      padding: 4px 14px;
      border-radius: 20px;
      border: 1px solid #fde68a;
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--dark-title);
      line-height: 1.3;
      margin-bottom: 14px;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--dark-muted);
      line-height: 1.6;
    }

    /* 首屏 HERO（纯代码/几何/卡片无图片） */
    .hero-section {
      padding: 80px 0 65px 0;
      background: linear-gradient(180deg, #fffbeb 0%, #ffffff 70%, var(--page-bg) 100%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

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

    .hero-content {
      text-align: left;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fef3c7;
      border: 1px solid #fcd34d;
      color: #92400e;
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 20px;
      box-shadow: var(--shadow-sm);
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background-color: #f59e0b;
      border-radius: 50%;
      animation: pulseDot 1.8s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.4); opacity: 0.6; }
    }

    .hero-title {
      font-size: 2.5rem;
      font-weight: 900;
      color: var(--dark-title);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title .highlight-yellow {
      background: linear-gradient(120deg, #f59e0b 0%, #d97706 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      position: relative;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--dark-body);
      line-height: 1.7;
      margin-bottom: 30px;
    }

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

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: 35px;
      text-decoration: none;
      box-shadow: 0 8px 24px rgba(245, 158, 11, 0.38);
      border: 1px solid #fbbf24;
      transition: var(--transition-normal);
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px rgba(217, 119, 6, 0.45);
      background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
      color: #78350f;
    }

    .btn-hero-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: #ffffff;
      color: var(--dark-title);
      font-size: 1.02rem;
      font-weight: 700;
      padding: 14px 28px;
      border-radius: 35px;
      text-decoration: none;
      border: 2px solid #fde68a;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-normal);
    }

    .btn-hero-secondary:hover {
      background: var(--yellow-light);
      border-color: #f59e0b;
      color: #92400e;
      transform: translateY(-2px);
    }

    .hero-highlights {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
    }

    .highlight-tag {
      display: flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      color: var(--dark-title);
      font-weight: 600;
    }

    .highlight-icon {
      color: #d97706;
      font-size: 1.1rem;
    }

    /* 首屏右侧纯CSS科技展板 */
    .hero-console {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid #fde68a;
      box-shadow: var(--shadow-lg);
      padding: 28px;
      position: relative;
    }

    .console-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px dashed #fde68a;
      margin-bottom: 20px;
    }

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

    .c-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }

    .c-dot-1 { background-color: #ef4444; }
    .c-dot-2 { background-color: #f59e0b; }
    .c-dot-3 { background-color: #10b981; }

    .console-status {
      font-size: 0.82rem;
      font-weight: 700;
      color: #92400e;
      background: #fef3c7;
      padding: 3px 10px;
      border-radius: 12px;
    }

    .model-matrix-chips {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-bottom: 20px;
    }

    .model-chip {
      background: #fffbeb;
      border: 1px solid #fef3c7;
      padding: 10px 8px;
      border-radius: var(--radius-sm);
      text-align: center;
      transition: var(--transition-fast);
    }

    .model-chip:hover {
      background: #fef3c7;
      border-color: #fbbf24;
      transform: translateY(-2px);
    }

    .model-chip-title {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 2px;
    }

    .model-chip-desc {
      font-size: 0.72rem;
      color: var(--dark-muted);
    }

    .console-card-metric {
      background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
      border-radius: var(--radius-md);
      padding: 16px;
      border: 1px solid #fde68a;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .metric-info h4 {
      font-size: 0.88rem;
      color: #78350f;
      font-weight: 700;
    }

    .metric-info p {
      font-size: 0.78rem;
      color: #92400e;
    }

    .metric-badge {
      background: #d97706;
      color: #ffffff;
      padding: 6px 14px;
      border-radius: 20px;
      font-weight: 800;
      font-size: 0.95rem;
    }

    /* 数据指标条 */
    .metrics-bar {
      margin-top: -30px;
      position: relative;
      z-index: 10;
      margin-bottom: 40px;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px 30px;
      box-shadow: var(--shadow-md);
      border: 2px solid #fef3c7;
    }

    .metric-item {
      text-align: center;
      border-right: 1px solid #f1f5f9;
    }

    .metric-item:last-child {
      border-right: none;
    }

    .metric-num {
      font-size: 2rem;
      font-weight: 900;
      color: #d97706;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--dark-title);
    }

    .metric-sub {
      font-size: 0.76rem;
      color: var(--dark-muted);
    }

    /* 通用卡片布局 */
    .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: 28px;
    }

    .feature-card {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-normal);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #fbbf24;
    }

    .card-icon-badge {
      width: 48px;
      height: 48px;
      background: #fef3c7;
      color: #b45309;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 16px;
      border: 1px solid #fde68a;
    }

    .card-title {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 0.93rem;
      color: var(--dark-body);
      line-height: 1.6;
      flex-grow: 1;
    }

    .card-tag {
      display: inline-block;
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      color: #92400e;
      background: #fffbeb;
      padding: 3px 10px;
      border-radius: 12px;
      border: 1px solid #fef3c7;
      margin-top: 14px;
    }

    /* 平台介绍板块 */
    .about-platform-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid #fde68a;
      box-shadow: var(--shadow-md);
      padding: 40px;
      margin-bottom: 30px;
    }

    .about-intro-lead {
      font-size: 1.15rem;
      color: var(--dark-title);
      font-weight: 600;
      line-height: 1.8;
      margin-bottom: 24px;
      border-left: 4px solid #f59e0b;
      padding-left: 18px;
    }

    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 20px;
    }

    .model-tag {
      background: #fffbeb;
      border: 1px solid #fde68a;
      color: #78350f;
      font-size: 0.82rem;
      font-weight: 700;
      padding: 5px 12px;
      border-radius: 20px;
      transition: var(--transition-fast);
    }

    .model-tag:hover {
      background: #f59e0b;
      color: #ffffff;
      border-color: #d97706;
    }

    /* 案例与素材图展示区 */
    .showcase-banner-wrapper {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-bottom: 30px;
    }

    .showcase-img-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-normal);
    }

    .showcase-img-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #fbbf24;
    }

    .showcase-img-card .ai-page-image {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
    }

    .showcase-card-body {
      padding: 14px 16px;
    }

    .showcase-card-title {
      font-size: 0.95rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 4px;
    }

    .showcase-card-desc {
      font-size: 0.8rem;
      color: var(--dark-muted);
    }

    /* 对比评测表格 */
    .comparison-section {
      background: linear-gradient(180deg, #ffffff 0%, #fffbeb 100%);
    }

    .review-score-hero {
      background: linear-gradient(135deg, #fef3c7 0%, #fffbeb 100%);
      border: 2px solid #fcd34d;
      border-radius: var(--radius-lg);
      padding: 30px;
      text-align: center;
      margin-bottom: 36px;
      box-shadow: var(--shadow-md);
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.8rem;
      margin-bottom: 8px;
    }

    .score-main {
      font-size: 3rem;
      font-weight: 900;
      color: #78350f;
      line-height: 1;
      margin-bottom: 8px;
    }

    .score-badge {
      display: inline-block;
      background: #d97706;
      color: #ffffff;
      font-weight: 800;
      font-size: 0.9rem;
      padding: 4px 16px;
      border-radius: 20px;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

    .compare-table th, 
    .compare-table td {
      padding: 16px 20px;
      font-size: 0.92rem;
      border-bottom: 1px solid #f1f5f9;
    }

    .compare-table th {
      background: #fffbeb;
      color: var(--dark-title);
      font-weight: 800;
      border-bottom: 2px solid #fde68a;
    }

    .compare-table td.highlight-col {
      background: #fefce8;
      font-weight: 700;
      color: #92400e;
    }

    .compare-table tr:hover td {
      background-color: #fafaf9;
    }

    .compare-table tr:hover td.highlight-col {
      background-color: #fef3c7;
    }

    .status-check {
      color: #16a34a;
      font-weight: 900;
      margin-right: 4px;
    }

    .status-cross {
      color: #94a3b8;
      margin-right: 4px;
    }

    /* 流程步骤 */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-normal);
    }

    .process-card:hover {
      border-color: #f59e0b;
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .process-num {
      position: absolute;
      top: -12px;
      left: 20px;
      background: linear-gradient(135deg, #f59e0b, #d97706);
      color: #ffffff;
      font-size: 0.85rem;
      font-weight: 900;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 2px 6px rgba(217, 119, 6, 0.3);
    }

    .process-title {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--dark-title);
      margin: 12px 0 8px 0;
    }

    .process-desc {
      font-size: 0.88rem;
      color: var(--dark-body);
      line-height: 1.6;
    }

    /* 用户评论 */
    .testimonial-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition-normal);
    }

    .testimonial-card:hover {
      border-color: #fbbf24;
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .testimonial-quote {
      font-size: 0.94rem;
      color: var(--dark-body);
      line-height: 1.65;
      margin-bottom: 18px;
      position: relative;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      background: #fef3c7;
      color: #92400e;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1rem;
      border: 1px solid #fde68a;
    }

    .author-name {
      font-size: 0.92rem;
      font-weight: 800;
      color: var(--dark-title);
    }

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

    /* FAQ 折叠面板 */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-item:hover {
      border-color: #fbbf24;
    }

    .faq-item.active {
      border-color: #f59e0b;
      box-shadow: var(--shadow-md);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 24px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--dark-title);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 800;
      color: #d97706;
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 0.93rem;
      color: var(--dark-body);
      line-height: 1.7;
      border-top: 1px solid #fffbeb;
    }

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

    /* 需求匹配与表单区 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid #fde68a;
      box-shadow: var(--shadow-lg);
      padding: 36px;
    }

    .contact-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-info-title {
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 14px;
    }

    .contact-info-desc {
      font-size: 0.95rem;
      color: var(--dark-body);
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .contact-details {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.92rem;
      color: var(--dark-title);
    }

    .contact-item-badge {
      background: #fef3c7;
      color: #92400e;
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 700;
      font-size: 0.8rem;
    }

    .kefu-qr-box {
      background: #fffbeb;
      border: 1px solid #fde68a;
      border-radius: var(--radius-md);
      padding: 16px;
      display: inline-flex;
      align-items: center;
      gap: 16px;
    }

    .kefu-qr-box img {
      width: 84px;
      height: 84px;
      object-fit: contain;
      border-radius: 6px;
      border: 1px solid #fcd34d;
      background: #fff;
    }

    .qr-text h5 {
      font-size: 0.92rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 4px;
    }

    .qr-text p {
      font-size: 0.78rem;
      color: var(--dark-muted);
    }

    /* 表单组件 */
    .form-group {
      margin-bottom: 16px;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1.5px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--dark-title);
      background-color: #ffffff;
      outline: none;
      transition: var(--transition-fast);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: #f59e0b;
      box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
    }

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

    .btn-submit {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      color: #ffffff;
      font-size: 1.05rem;
      font-weight: 800;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
      transition: var(--transition-normal);
    }

    .btn-submit:hover {
      background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
      color: #78350f;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(217, 119, 6, 0.45);
    }

    /* 文章列表与资讯 */
    .article-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .article-item-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-normal);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .article-item-card:hover {
      border-color: #fbbf24;
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .article-title {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-excerpt {
      font-size: 0.88rem;
      color: var(--dark-body);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .article-link {
      font-size: 0.85rem;
      font-weight: 700;
      color: #d97706;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    .article-link:hover {
      color: #92400e;
      text-decoration: underline;
    }

    /* 加盟代理板块 */
    .partner-banner {
      background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
      border-radius: var(--radius-lg);
      padding: 40px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1.3fr 0.7fr;
      gap: 30px;
      align-items: center;
    }

    .partner-content h3 {
      font-size: 1.8rem;
      font-weight: 900;
      margin-bottom: 12px;
      color: #ffffff;
    }

    .partner-content p {
      font-size: 1rem;
      opacity: 0.95;
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .partner-perks {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .partner-perk-badge {
      background: rgba(255, 255, 255, 0.2);
      border: 1px solid rgba(255, 255, 255, 0.4);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 700;
    }

    .partner-action-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    }

    .partner-action-box h4 {
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 8px;
    }

    .partner-action-box p {
      font-size: 0.82rem;
      color: var(--dark-muted);
      margin-bottom: 16px;
    }

    /* 页脚设计 */
    .site-footer {
      background: #ffffff;
      border-top: 3px solid #f59e0b;
      padding: 50px 0 25px 0;
      color: var(--dark-body);
      margin-top: 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 16px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 24px;
      height: 2px;
      background-color: #f59e0b;
    }

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

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

    .footer-links-list a:hover {
      color: #b45309;
      padding-left: 4px;
    }

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links-wrap a {
      background: #fffbeb;
      border: 1px solid #fde68a;
      color: #78350f;
      font-size: 0.82rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 6px;
      text-decoration: none;
      transition: var(--transition-fast);
    }

    .friend-links-wrap a:hover {
      background: #f59e0b;
      color: #ffffff;
      border-color: #d97706;
    }

    .footer-bottom {
      border-top: 1px solid #f1f5f9;
      padding-top: 20px;
      text-align: center;
      font-size: 0.82rem;
      color: var(--dark-muted);
    }

    /* 悬浮客服与回到顶部 */
    .float-widget-bar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      z-index: 999;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 2px solid #f59e0b;
      color: #d97706;
      box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-weight: 800;
      font-size: 1.1rem;
      transition: var(--transition-normal);
      text-decoration: none;
    }

    .float-btn:hover {
      background: #f59e0b;
      color: #ffffff;
      transform: scale(1.08);
    }

    /* 响应式适配 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .showcase-banner-wrapper {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid #f1f5f9;
        padding-bottom: 12px;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .partner-banner {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 1.85rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
      .grid-3, .grid-2, .grid-4, .process-grid, .showcase-banner-wrapper, .article-card-grid {
        grid-template-columns: 1fr;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        border-bottom: 2px solid var(--yellow-bright);
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        padding: 16px 20px;
        display: none;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li a {
        padding: 10px 14px;
      }
    }