:root {
      --primary-coral: #FF4A26;
      --primary-cyan: #00D2B4;
      --accent-yellow: #FFC700;
      --accent-purple: #6C5CE7;
      --bg-light: #F8F9FA;
      --card-bg: #FFFFFF;
      --card-alt: #F0F4F8;
      --text-main: #1A1D20;
      --text-muted: #59626A;
      --border-color: #E2E8F0;
      --border-accent: #1A1D20;
      --shadow-pop: 4px 4px 0px #1A1D20;
      --shadow-pop-hover: 6px 6px 0px #1A1D20;
      --radius: 12px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
    }

    body {
      background: radial-gradient(circle at 10% 20%, rgba(255, 74, 38, 0.04) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(0, 210, 180, 0.05) 0%, transparent 40%),
                  var(--bg-light);
      min-height: 100vh;
      overflow-x: hidden;
      line-height: 1.6;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Top Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid var(--border-accent);
    }

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

    .brand-area {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .logo-box {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

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

    .nav-links li a {
      text-decoration: none;
      color: var(--text-main);
      font-weight: 700;
      font-size: 14px;
      padding: 8px 14px;
      border-radius: 6px;
      transition: var(--transition);
      display: inline-block;
    }

    .nav-links li a:hover {
      background-color: var(--accent-yellow);
      color: #000;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      text-decoration: none;
      padding: 12px 24px;
      border-radius: 8px;
      border: 2px solid var(--border-accent);
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-coral {
      background-color: var(--primary-coral);
      color: #FFFFFF;
      box-shadow: var(--shadow-pop);
    }

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

    .btn-cyan {
      background-color: var(--primary-cyan);
      color: var(--text-main);
      box-shadow: var(--shadow-pop);
    }

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

    .btn-yellow {
      background-color: var(--accent-yellow);
      color: var(--text-main);
      box-shadow: var(--shadow-pop);
    }

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

    .menu-toggle {
      display: none;
      background: none;
      border: 2px solid var(--border-accent);
      padding: 8px;
      border-radius: 6px;
      cursor: pointer;
    }

    /* Section Global */
    .section-padding {
      padding: 80px 0;
      border-bottom: 2px solid var(--border-accent);
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .badge-pill {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      text-transform: uppercase;
      padding: 6px 14px;
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: 30px;
      box-shadow: 2px 2px 0px var(--border-accent);
      margin-bottom: 16px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* Hero Section (No Images as required) */
    .hero-section {
      padding: 90px 0 80px;
      background: repeating-linear-gradient(
        45deg,
        rgba(0, 210, 180, 0.03),
        rgba(0, 210, 180, 0.03) 10px,
        rgba(255, 74, 38, 0.03) 10px,
        rgba(255, 74, 38, 0.03) 20px
      );
      border-bottom: 2px solid var(--border-accent);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .hero-h1 {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
    }

    .hero-h1 span {
      background: linear-gradient(120deg, var(--primary-coral), var(--accent-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-lead {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 30px;
    }

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

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tag-item {
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      background: #FFF;
      border: 1.5px solid var(--border-accent);
      border-radius: 4px;
    }

    .hero-card-stack {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: 8px 8px 0px var(--border-accent);
    }

    .stack-header {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 2px dashed var(--border-accent);
      padding-bottom: 12px;
    }

    .metric-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 20px;
    }

    .metric-box {
      background: var(--bg-light);
      padding: 16px;
      border-radius: 8px;
      border: 1.5px solid var(--border-accent);
    }

    .metric-val {
      font-size: 26px;
      font-weight: 900;
      color: var(--primary-coral);
    }

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

    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .model-pill {
      font-size: 11px;
      font-weight: 800;
      padding: 4px 8px;
      background: var(--accent-yellow);
      border: 1px solid var(--border-accent);
      border-radius: 4px;
    }

    /* Grid Layouts */
    .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;
    }

    .card-block {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-pop);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .card-block:hover {
      transform: translate(-3px, -3px);
      box-shadow: var(--shadow-pop-hover);
    }

    .card-tag {
      font-size: 12px;
      font-weight: 800;
      display: inline-block;
      margin-bottom: 12px;
      padding: 2px 8px;
      border-radius: 4px;
      width: fit-content;
      border: 1px solid var(--border-accent);
    }

    .card-title {
      font-size: 19px;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    /* Steps */
    .step-num {
      width: 40px;
      height: 40px;
      background: var(--accent-yellow);
      border: 2px solid var(--border-accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 900;
      margin-bottom: 16px;
      box-shadow: 2px 2px 0px var(--border-accent);
    }

    /* Comparison Table */
    .table-container {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius);
      box-shadow: var(--shadow-pop);
      overflow-x: auto;
      margin-top: 30px;
    }

    .review-summary-banner {
      background: var(--accent-yellow);
      padding: 20px 30px;
      border-bottom: 2px solid var(--border-accent);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

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

    .review-stars {
      font-size: 20px;
      color: var(--primary-coral);
    }

    .review-score-num {
      font-size: 28px;
      font-weight: 900;
      background: #FFFFFF;
      padding: 4px 12px;
      border: 2px solid var(--border-accent);
      border-radius: 6px;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    th, td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    th {
      background-color: var(--card-alt);
      font-weight: 800;
      color: var(--text-main);
      border-bottom: 2px solid var(--border-accent);
    }

    .col-highlight {
      background-color: rgba(0, 210, 180, 0.08);
      font-weight: 700;
    }

    /* Media Images Responsive */
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 20px;
      margin-top: 30px;
    }

    .media-card {
      background: #FFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius);
      padding: 14px;
      box-shadow: var(--shadow-pop);
    }

    .media-card .img-wrapper {
      border-radius: 6px;
      overflow: hidden;
      border: 1px solid var(--border-accent);
      margin-bottom: 12px;
      background: #EEE;
    }

    .media-card img {
      width: 100%;
      height: auto;
      display: block;
    }

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

    .faq-item {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: 8px;
      box-shadow: 3px 3px 0px var(--border-accent);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-question {
      padding: 18px 24px;
      font-weight: 800;
      font-size: 16px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      background: #FFFFFF;
    }

    .faq-question:hover {
      background: var(--card-alt);
    }

    .faq-arrow {
      font-size: 18px;
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #FAFAFA;
      padding: 0 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      padding: 16px 24px 20px;
      max-height: 300px;
      border-top: 1px solid var(--border-color);
    }

    /* Reviews */
    .review-card {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: var(--shadow-pop);
    }

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

    .avatar-mock {
      width: 44px;
      height: 44px;
      background: var(--accent-yellow);
      border: 2px solid var(--border-accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 15px;
    }

    .user-meta-name {
      font-weight: 800;
      font-size: 15px;
    }

    .user-meta-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* Form Section */
    .form-box {
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: 8px 8px 0px var(--border-accent);
    }

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

    .form-group label {
      display: block;
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid var(--border-accent);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      background: #FFF;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary-coral);
      box-shadow: 3px 3px 0px var(--border-accent);
    }

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

    /* Article List */
    .article-link-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 14px;
      list-style: none;
      margin-top: 20px;
    }

    .article-link-list li a {
      display: block;
      padding: 14px 18px;
      background: #FFFFFF;
      border: 2px solid var(--border-accent);
      border-radius: 8px;
      text-decoration: none;
      color: var(--text-main);
      font-weight: 700;
      font-size: 14px;
      box-shadow: 3px 3px 0px var(--border-accent);
      transition: var(--transition);
    }

    .article-link-list li a:hover {
      background: var(--primary-cyan);
      transform: translate(-2px, -2px);
    }

    /* Footer */
    .site-footer {
      background-color: #FFFFFF;
      border-top: 2px solid var(--border-accent);
      padding: 60px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 16px;
      font-weight: 900;
      margin-bottom: 18px;
      color: var(--text-main);
    }

    .footer-col p, .footer-col li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
      line-height: 1.6;
    }

    .footer-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }

    .footer-links-wrap a {
      font-size: 13px;
      color: var(--text-main);
      text-decoration: none;
      font-weight: 700;
      background: var(--card-alt);
      padding: 4px 10px;
      border: 1px solid var(--border-accent);
      border-radius: 4px;
      transition: var(--transition);
    }

    .footer-links-wrap a:hover {
      background: var(--accent-yellow);
    }

    .qr-container {
      display: inline-block;
      border: 2px solid var(--border-accent);
      border-radius: 8px;
      padding: 8px;
      background: #FFF;
      max-width: 130px;
      box-shadow: 3px 3px 0px var(--border-accent);
      margin-top: 8px;
    }

    .qr-container img {
      width: 100%;
      height: auto;
      display: block;
    }

    .footer-bottom {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .float-btn {
      width: 48px;
      height: 48px;
      background: var(--accent-yellow);
      border: 2px solid var(--border-accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 3px 3px 0px var(--border-accent);
      cursor: pointer;
      text-decoration: none;
      color: var(--text-main);
      font-weight: 900;
      font-size: 13px;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: scale(1.08);
    }

    /* Responsive Queries */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid var(--border-accent);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-h1 {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
    }