/* roulang page: index */
:root {
      --primary-dark: #0B0E17;
      --surface-dark: #161B2E;
      --card-dark: #1E2438;
      --accent-green: #00FF87;
      --accent-cyan: #00D2FF;
      --accent-orange: #FF5555;
      --text-main: #0B0E17;
      --text-muted: #5A6A85;
      --text-light: #F0F4F8;
      --text-dim: #94A3B8;
      --bg-light: #F5F7FB;
      --bg-white: #FFFFFF;
      --border-light: rgba(226, 232, 240, 0.9);
      --border-dark: rgba(255, 255, 255, 0.08);
      --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.04);
      --shadow-card: 0 10px 30px rgba(11, 14, 23, 0.06);
      --shadow-glow: 0 4px 20px rgba(0, 255, 135, 0.35);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-pill: 9999px;
      --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    /* Reset & Base */
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      padding: 0;
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    a:hover, a:focus { color: var(--accent-cyan); }
    img { max-width: 100%; height: auto; display: block; }
    h1, h2, h3, h4, h5 { font-family: var(--font-stack); color: var(--primary-dark); font-weight: 700; margin-top: 0; }
    
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部微型通知状态条 */
    .top-status-bar {
      background-color: #080A10;
      color: var(--text-dim);
      font-size: 12px;
      padding: 7px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .top-status-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-left span { margin-right: 20px; display: inline-flex; align-items: center; gap: 6px; }
    .status-dot { width: 8px; height: 8px; background: var(--accent-green); border-radius: 50%; box-shadow: 0 0 8px var(--accent-green); display: inline-block; }
    .status-right a { color: var(--text-dim); margin-left: 15px; }
    .status-right a:hover { color: var(--accent-green); }

    /* 浮动 Dock 导航 */
    .dock-nav-wrapper {
      position: sticky;
      top: 15px;
      z-index: 999;
      padding: 0 20px;
    }
    .dock-nav-bar {
      max-width: 1240px;
      margin: 0 auto;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-radius: var(--radius-pill);
      border: 1px solid rgba(226, 232, 240, 0.95);
      box-shadow: 0 8px 32px rgba(15, 23, 42, 0.1);
      padding: 8px 18px 8px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: all 0.3s ease;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--primary-dark);
      letter-spacing: -0.5px;
    }
    .nav-brand i { color: var(--accent-green); font-size: 24px; }
    .dock-menu {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 22px;
    }
    .dock-menu li a {
      font-size: 14px;
      font-weight: 600;
      color: #334155;
      padding: 6px 4px;
      position: relative;
    }
    .dock-menu li a:hover {
      color: #0284C7;
    }
    .dock-cta-btn {
      background: linear-gradient(135deg, #00FF87 0%, #00D2FF 100%);
      color: #0B0E17 !important;
      font-size: 14px;
      font-weight: 700;
      padding: 9px 22px;
      border-radius: var(--radius-pill);
      box-shadow: var(--shadow-glow);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .dock-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(0, 255, 135, 0.5);
    }
    .mobile-menu-trigger {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--primary-dark);
      cursor: pointer;
      padding: 6px 10px;
    }

    /* 通用 Section 样式 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-light {
      background-color: var(--bg-light);
    }
    .section-white {
      background-color: var(--bg-white);
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .section-dark {
      background-color: var(--primary-dark);
      color: var(--text-light);
    }
    .section-dark h2, .section-dark h3 {
      color: #FFFFFF;
    }
    .section-dark .section-subtitle {
      color: var(--text-dim);
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px;
    }
    .section-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      color: #0284C7;
      background: rgba(0, 210, 255, 0.12);
      padding: 4px 14px;
      border-radius: var(--radius-pill);
      margin-bottom: 12px;
    }
    .section-tag.tag-green {
      color: #00875A;
      background: rgba(0, 255, 135, 0.2);
    }
    .section-dark .section-tag.tag-green {
      color: var(--accent-green);
      background: rgba(0, 255, 135, 0.12);
    }
    .section-title {
      font-size: 32px;
      line-height: 1.35;
      margin-bottom: 14px;
      font-weight: 800;
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 0;
    }

    /* 板块 1: 首屏 Hero Orbit Banner */
    #hero {
      padding: 50px 0 80px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 210, 255, 0.15) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(0, 255, 135, 0.12) 0%, transparent 50%),
                  #0B0E17;
      color: #FFFFFF;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    #hero h1 {
      font-size: 42px;
      line-height: 1.25;
      color: #FFFFFF;
      font-weight: 800;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-badge-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 18px;
    }
    .hero-badge {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.18);
      font-size: 13px;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
      color: var(--accent-green);
      font-weight: 600;
    }
    .hero-lead {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.85;
      margin-bottom: 30px;
    }
    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 30px;
    }
    .btn-main-hero {
      background: linear-gradient(135deg, #00FF87 0%, #00D2FF 100%);
      color: #0B0E17;
      font-weight: 700;
      padding: 14px 34px;
      border-radius: var(--radius-pill);
      font-size: 16px;
      box-shadow: 0 6px 24px rgba(0, 255, 135, 0.4);
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-main-hero:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(0, 255, 135, 0.6);
      color: #0B0E17;
    }
    .btn-outline-hero {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.22);
      color: #FFFFFF;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: var(--radius-pill);
      font-size: 16px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
    }
    .btn-outline-hero:hover {
      background: rgba(255, 255, 255, 0.15);
      color: var(--accent-cyan);
    }
    .hero-params-list {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      padding-top: 15px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 13px;
      color: #94A3B8;
    }
    .hero-params-list span { display: inline-flex; align-items: center; gap: 6px; }
    .hero-params-list i { color: var(--accent-green); }
    .hero-visual-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
      background: #111625;
    }
    .hero-visual-card img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .hero-glass-overlay {
      position: absolute;
      bottom: 16px;
      left: 16px;
      right: 16px;
      padding: 14px 20px;
      background: rgba(11, 14, 23, 0.85);
      backdrop-filter: blur(10px);
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.12);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .hero-glass-title { font-size: 14px; font-weight: 700; color: #FFFFFF; margin-bottom: 2px; }
    .hero-glass-meta { font-size: 12px; color: var(--accent-green); }

    /* 板块 2: 矩阵与架构概览 */
    #overview .grid-x {
      align-items: center;
    }
    .overview-image-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
    }
    .overview-image-wrap img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }
    .overview-pill-float {
      position: absolute;
      top: 20px;
      right: 20px;
      background: #0B0E17;
      color: var(--accent-green);
      font-size: 12px;
      font-weight: 700;
      padding: 8px 16px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .overview-content {
      padding-left: 20px;
    }
    .overview-features-list {
      list-style: none;
      margin: 24px 0 30px;
      padding: 0;
    }
    .overview-features-list li {
      display: flex;
      align-items: flex-start;
      gap: 15px;
      margin-bottom: 18px;
    }
    .overview-features-list .ico {
      width: 36px;
      height: 36px;
      background: rgba(0, 210, 255, 0.1);
      color: #0284C7;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .overview-features-list h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 4px;
    }
    .overview-features-list p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
    }
    .tech-metric-panel {
      background: #FFFFFF;
      border-left: 4px solid var(--accent-green);
      padding: 16px 20px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      box-shadow: var(--shadow-sm);
      border-top: 1px solid var(--border-light);
      border-right: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .tech-metric-panel strong { color: var(--primary-dark); font-size: 14px; display: block; margin-bottom: 3px; }
    .tech-metric-panel span { font-size: 13px; color: var(--text-muted); }

    /* 板块 3: 核心功能与技术优势 (6卡片) */
    .feature-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 16px 36px rgba(11, 14, 23, 0.08);
      border-color: #CBD5E1;
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(2, 132, 199, 0.08);
      color: #0284C7;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
    }
    .feature-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .feature-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 0;
      flex-grow: 1;
    }

    /* 板块 4: 热门精选PC游戏展示 (3卡片) */
    .game-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .game-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    }
    .game-thumb {
      position: relative;
      height: 220px;
      overflow: hidden;
    }
    .game-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .game-card:hover .game-thumb img {
      transform: scale(1.05);
    }
    .game-tag-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(11, 14, 23, 0.8);
      backdrop-filter: blur(6px);
      color: #FFFFFF;
      font-size: 12px;
      padding: 3px 10px;
      border-radius: var(--radius-sm);
      font-weight: 600;
    }
    .game-status-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: var(--accent-green);
      color: #0B0E17;
      font-size: 11px;
      font-weight: 800;
      padding: 3px 8px;
      border-radius: 4px;
    }
    .game-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .game-body h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .game-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex-grow: 1;
    }
    .game-meta-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-top: 14px;
      border-top: 1px solid var(--border-light);
      font-size: 13px;
    }
    .game-meta-row .score { color: #EAB308; font-weight: 700; }
    .game-meta-row .fps { color: #0284C7; font-weight: 600; }

    /* 板块 5: 深色极客生态与平台底层理念 */
    #ecosystem {
      background: linear-gradient(180deg, #0B0E17 0%, #161B2E 100%);
      color: #FFFFFF;
    }
    .eco-manifesto {
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: rgba(255, 255, 255, 0.03);
      border-radius: var(--radius-lg);
      padding: 36px 40px;
      margin-bottom: 40px;
    }
    .eco-manifesto h3 {
      color: var(--accent-green);
      font-size: 22px;
      margin-bottom: 14px;
    }
    .eco-manifesto p {
      color: #CBD5E1;
      font-size: 15px;
      line-height: 1.8;
      margin-bottom: 0;
    }
    .eco-step-card {
      background: rgba(30, 36, 56, 0.6);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      height: 100%;
    }
    .eco-step-num {
      font-size: 32px;
      font-weight: 900;
      color: var(--accent-cyan);
      line-height: 1;
      margin-bottom: 12px;
      opacity: 0.85;
    }
    .eco-step-card h4 {
      font-size: 17px;
      color: #FFFFFF;
      margin-bottom: 8px;
    }
    .eco-step-card p {
      font-size: 13px;
      color: var(--text-dim);
      margin: 0;
      line-height: 1.65;
    }

    /* 板块 6: 玩家与开发者真实故事 */
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .story-img {
      height: 200px;
      overflow: hidden;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .story-identity {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
    }
    .story-avatar-icon {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #334155;
      font-weight: 700;
      font-size: 14px;
    }
    .story-author { font-size: 14px; font-weight: 700; }
    .story-role { font-size: 12px; color: var(--text-muted); }
    .story-body h3 { font-size: 18px; margin-bottom: 8px; }
    .story-body p { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin: 0; flex-grow: 1; }

    /* 板块 7: 平台运行关键数据统计条 */
    #stats {
      padding: 50px 0;
      background: linear-gradient(90deg, #161B2E 0%, #0F172A 100%);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
    }
    .stat-box {
      text-align: center;
      padding: 10px 15px;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    .stat-box:last-child { border-right: none; }
    .stat-number {
      font-size: 40px;
      font-weight: 900;
      color: var(--accent-green);
      line-height: 1.1;
      margin-bottom: 6px;
      font-family: var(--font-stack);
    }
    .stat-label {
      font-size: 14px;
      color: #CBD5E1;
      font-weight: 600;
      margin-bottom: 2px;
    }
    .stat-sub {
      font-size: 12px;
      color: #64748B;
    }

    /* 板块 8: 用户真实评价与口碑 */
    .review-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .review-user-row {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 14px;
    }
    .review-user-info h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .review-user-info span {
      font-size: 12px;
      color: var(--text-muted);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 13px;
    }
    .review-text {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .review-hw-badge {
      display: inline-block;
      font-size: 12px;
      background: #F1F5F9;
      color: #475569;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      width: fit-content;
    }

    /* 板块 9: 行业资讯与版本更新动态 */
    .news-spotlight-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      height: 100%;
    }
    .news-spotlight-card img {
      width: 100%;
      height: 230px;
      object-fit: cover;
    }
    .news-spotlight-content {
      padding: 24px;
    }
    .news-spotlight-content .date {
      font-size: 12px;
      color: #0284C7;
      font-weight: 600;
      margin-bottom: 8px;
      display: block;
    }
    .news-spotlight-content h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .news-spotlight-content p {
      font-size: 14px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.65;
    }
    .news-list-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      padding: 10px 24px 20px;
      height: 100%;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-item-row {
      padding: 18px 0;
      border-bottom: 1px solid var(--border-light);
    }
    .news-item-row:last-of-type {
      border-bottom: none;
    }
    .news-item-row .tag {
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 4px;
      background: #EEF2F6;
      color: #475569;
      margin-right: 8px;
    }
    .news-item-row h4 {
      font-size: 15px;
      font-weight: 700;
      margin: 6px 0;
      color: var(--primary-dark);
    }
    .news-item-row p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
      line-height: 1.6;
    }
    .news-more-btn {
      display: block;
      text-align: center;
      margin-top: 14px;
      padding: 10px;
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 700;
      color: #0284C7;
      border: 1px solid var(--border-light);
    }
    .news-more-btn:hover {
      background: #F1F5F9;
      color: #0369A1;
    }

    /* 板块 10: 常见问题解答 FAQ */
    .faq-accordion-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-accordion-item.is-active {
      border-color: #0284C7;
      box-shadow: 0 4px 18px rgba(2, 132, 199, 0.08);
    }
    .faq-title-btn {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--primary-dark);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-title-btn i {
      font-size: 14px;
      color: #0284C7;
      transition: transform 0.3s ease;
    }
    .faq-content-box {
      padding: 0 24px 20px;
      font-size: 14px;
      color: #475569;
      line-height: 1.75;
      display: none;
    }
    .faq-accordion-item.is-active .faq-content-box {
      display: block;
    }
    .faq-accordion-item.is-active .faq-title-btn i {
      transform: rotate(180deg);
    }

    /* 板块 11: 全维度服务保障条 */
    #guarantee {
      background: #FFFFFF;
      padding: 48px 0;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 10px 14px;
    }
    .guarantee-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(0, 255, 135, 0.15);
      color: #00875A;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
    }
    .guarantee-info h4 {
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 2px;
    }
    .guarantee-info p {
      font-size: 13px;
      color: var(--text-muted);
      margin: 0;
    }

    /* 板块 12: 底部强效行动号召 CTA */
    #download {
      background: radial-gradient(circle at 50% 50%, rgba(0, 210, 255, 0.18) 0%, transparent 70%), #0B0E17;
      color: #FFFFFF;
      padding: 90px 0;
      text-align: center;
    }
    .download-card-box {
      max-width: 860px;
      margin: 0 auto;
      background: rgba(22, 27, 46, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: var(--radius-lg);
      padding: 50px 36px;
      backdrop-filter: blur(12px);
      box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
    }
    .download-card-box h2 {
      color: #FFFFFF;
      font-size: 34px;
      margin-bottom: 16px;
    }
    .download-card-box p {
      color: #CBD5E1;
      font-size: 16px;
      max-width: 660px;
      margin: 0 auto 32px;
      line-height: 1.8;
    }
    .download-action-btns {
      display: flex;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 24px;
    }
    .spec-badges-row {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 20px;
      font-size: 13px;
      color: #94A3B8;
      flex-wrap: wrap;
    }
    .spec-badges-row span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .spec-badges-row i {
      color: var(--accent-green);
    }

    /* 双层页脚 Footer */
    footer {
      background: #080A10;
      color: #94A3B8;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-top {
      padding: 60px 0 40px;
    }
    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 20px;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand h3 i { color: var(--accent-green); }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: #64748B;
      margin-bottom: 16px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: var(--accent-green);
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 13px;
      margin-bottom: 10px;
      color: #94A3B8;
    }
    .footer-bottom {
      padding: 24px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 12px;
      color: #64748B;
    }
    .footer-bottom-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom a {
      color: #64748B;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 移动端抽屉遮罩与断点样式 */
    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(11, 14, 23, 0.96);
      backdrop-filter: blur(16px);
      z-index: 1000;
      display: none;
      flex-direction: column;
      padding: 30px 24px;
    }
    .mobile-drawer.is-open {
      display: flex;
    }
    .drawer-top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
    }
    .drawer-close {
      background: none;
      border: none;
      color: #FFFFFF;
      font-size: 26px;
      cursor: pointer;
    }
    .drawer-links {
      list-style: none;
      margin: 0 0 30px;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .drawer-links a {
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 700;
    }

    @media (max-width: 1024px) {
      .dock-menu { display: none; }
      .mobile-menu-trigger { display: block; }
      .dock-cta-btn { display: none; }
      .stat-box { border-right: none; margin-bottom: 20px; }
    }
    @media (max-width: 768px) {
      #hero h1 { font-size: 32px; }
      .section-title { font-size: 26px; }
      .hero-visual-card img { height: 280px; }
      .overview-content { padding-left: 0; margin-top: 30px; }
      .overview-image-wrap img { height: 280px; }
      .stat-number { font-size: 32px; }
      .download-card-box { padding: 36px 20px; }
      .top-status-inner { flex-direction: column; gap: 4px; text-align: center; }
    }
    @media (max-width: 520px) {
      section { padding: 60px 0; }
      .btn-main-hero, .btn-outline-hero { width: 100%; justify-content: center; }
      .download-action-btns a { width: 100%; justify-content: center; }
    }