:root {
      --primary: #c62828;
      --primary-hover: #b71c1c;
      --primary-light: #ffebee;
      --primary-gradient: linear-gradient(135deg, #d32f2f 0%, #b71c1c 100%);
      --accent-gold: #e65100;
      --accent-glow: rgba(211, 47, 47, 0.15);
      --bg-main: #fdfbfb;
      --bg-card: #ffffff;
      --bg-alt: #fbf5f5;
      --text-main: #1f2429;
      --text-sub: #57606a;
      --text-muted: #8c959f;
      --border-color: #f1dede;
      --shadow-sm: 0 2px 8px rgba(198, 40, 40, 0.05);
      --shadow-md: 0 8px 24px rgba(198, 40, 40, 0.08);
      --shadow-lg: 0 16px 36px rgba(198, 40, 40, 0.12);
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --transition: all 0.28s ease;
    }

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

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

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

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

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .brand-logo-wrap {
      max-height: 44px;
      display: flex;
      align-items: center;
    }

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

    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
      display: inline-block;
    }

    .brand-badge {
      font-size: 0.75rem;
      background: var(--primary-light);
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 20px;
      font-weight: 600;
    }

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

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

    .nav-links li a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: block;
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-left: 16px;
    }

    .btn-header {
      background: var(--primary-gradient);
      color: #ffffff !important;
      padding: 8px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 30px;
      box-shadow: 0 4px 12px rgba(198, 40, 40, 0.25);
    }

    .btn-header:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(198, 40, 40, 0.35);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 8px;
      border-radius: 6px;
      cursor: pointer;
      color: var(--primary);
    }

    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-alt {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

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

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-sub);
    }

    /* Hero Section (No Images Allowed in Hero) */
    .hero-section {
      padding: 90px 0 70px 0;
      background: radial-gradient(circle at 50% 20%, #fff1f1 0%, #ffffff 70%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      border: 1px solid #f8bbd0;
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
      animation: pulse 1.8s infinite;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      color: #1a1a1a;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--primary);
      display: inline-block;
      position: relative;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-sub);
      max-width: 760px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-main {
      background: var(--primary-gradient);
      color: #ffffff;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 30px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      box-shadow: 0 10px 24px rgba(198, 40, 40, 0.3);
      border: none;
      cursor: pointer;
    }

    .btn-main:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 28px rgba(198, 40, 40, 0.4);
      color: #fff;
    }

    .btn-secondary {
      background: #ffffff;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      padding: 14px 30px;
      font-size: 1.05rem;
      font-weight: 600;
      border-radius: 30px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-light);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      text-align: center;
    }

    .hero-stat-item {
      padding: 8px;
      border-right: 1px solid #f0f0f0;
    }

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

    .stat-num {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }

    .stat-lbl {
      font-size: 0.875rem;
      color: var(--text-sub);
      margin-top: 4px;
    }

    /* Model Ticker Banner */
    .model-ticker-box {
      background: #ffffff;
      padding: 20px 0;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }

    .model-badge-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-chip {
      background: var(--bg-alt);
      color: var(--text-main);
      border: 1px solid #f0d0d0;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: var(--transition);
    }

    .model-chip:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* Grid layout standards */
    .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: 30px;
    }

    /* Feature Cards */
    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #f8bbd0;
    }

    .service-icon {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .service-desc {
      font-size: 0.925rem;
      color: var(--text-sub);
      flex-grow: 1;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .service-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .service-tag {
      background: #fafafa;
      color: var(--text-sub);
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      border: 1px solid #eeeeee;
    }

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

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

    .flow-step-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
    }

    .flow-step-num {
      width: 36px;
      height: 36px;
      background: var(--primary-gradient);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      margin-bottom: 16px;
    }

    .flow-step-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .flow-step-desc {
      font-size: 0.9rem;
      color: var(--text-sub);
    }

    /* Evaluation Matrix & Table */
    .eval-highlight-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .eval-score-area {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-circle {
      width: 86px;
      height: 86px;
      background: var(--primary-gradient);
      color: #fff;
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 0 8px 20px rgba(198, 40, 40, 0.3);
    }

    .score-val {
      font-size: 1.8rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-scale {
      font-size: 0.75rem;
      opacity: 0.9;
    }

    .eval-meta h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .stars-box {
      color: #ff9800;
      font-size: 1.25rem;
      letter-spacing: 2px;
    }

    .eval-table-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

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

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f5e8e8;
      font-size: 0.95rem;
    }

    .compare-table th {
      background: #faf4f4;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table tr:hover td {
      background: #fdf8f8;
    }

    .highlight-col {
      background: #fff8f8;
      font-weight: 600;
      color: var(--primary);
    }

    /* Media & Cases Area */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

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

    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #f0f0f0;
      overflow: hidden;
    }

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

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

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

    .case-body {
      padding: 20px;
    }

    .case-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 0.875rem;
      color: var(--text-sub);
      line-height: 1.6;
    }

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

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

    .test-content {
      font-size: 0.925rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .test-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f5e8e8;
      padding-top: 14px;
    }

    .user-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .user-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
    }

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

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      background: #ffffff;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
    }

    .faq-question:hover {
      color: var(--primary);
      background: #fffafa;
    }

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 300;
      color: var(--primary);
      transition: transform 0.28s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fffdfd;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 20px 24px;
    }

    .faq-answer p {
      font-size: 0.925rem;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* Form & Contact */
    .contact-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: stretch;
    }

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #e0d0d0;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
      background: #fff;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.12);
    }

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

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .contact-list-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 0.95rem;
    }

    .qr-container {
      background: var(--bg-alt);
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      text-align: center;
    }

    .qr-img-box {
      max-width: 160px;
      margin: 0 auto 10px auto;
      background: #fff;
      padding: 6px;
      border-radius: 8px;
      box-shadow: var(--shadow-sm);
    }

    /* Articles & Links */
    .article-links-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 20px;
    }

    .article-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
      margin-top: 12px;
    }

    .article-list a {
      background: var(--bg-alt);
      color: var(--text-main);
      padding: 6px 14px;
      border-radius: 6px;
      font-size: 0.875rem;
      border: 1px solid #f0e0e0;
      display: inline-block;
    }

    .article-list a:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* Footer */
    .site-footer {
      background: #211c1d;
      color: #d1c8c8;
      border-top: 3px solid var(--primary);
      padding: 60px 0 24px 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 18px;
      position: relative;
      padding-bottom: 8px;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 2px;
      background: var(--primary);
    }

    .footer-links {
      list-style: none;
    }

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

    .footer-links a {
      color: #b0a4a4;
      font-size: 0.9rem;
    }

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

    .friendly-links-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 10px;
    }

    .friendly-links-bar a {
      color: #b0a4a4;
      font-size: 0.85rem;
      background: #2b2526;
      padding: 4px 10px;
      border-radius: 4px;
      display: inline-block;
    }

    .friendly-links-bar a:hover {
      color: #ffffff;
      background: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #362e2f;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.85rem;
      color: #8c8080;
    }

    .footer-bottom a {
      color: #a89c9c;
    }

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

    /* Floating Widget */
    .float-contact {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(198, 40, 40, 0.4);
      cursor: pointer;
      border: none;
      font-size: 1.2rem;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: scale(1.1);
    }

    /* Animations */
    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.2); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-3, .case-gallery-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4, .flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .contact-layout {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 2.2rem;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-wrapper {
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        display: none;
        flex-direction: column;
        padding: 20px;
      }
      .nav-wrapper.show {
        display: flex;
      }
      .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 0;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 16px;
        width: 100%;
      }
      .nav-actions {
        margin: 16px 0 0 0;
        width: 100%;
      }
      .btn-header {
        width: 100%;
        text-align: center;
      }
      .grid-3, .grid-4, .grid-2, .flow-grid, .case-gallery-grid, .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stat-item:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .section-title {
        font-size: 1.6rem;
      }
    }