/* roulang page: index */
:root {
      --dm-primary: #ff0055;
      --dm-primary-glow: rgba(255, 0, 85, 0.28);
      --dm-accent: #00f2fe;
      --dm-bg-main: #0b0c10;
      --dm-bg-surface: #14171f;
      --dm-bg-card: #1b1f2b;
      --dm-bg-card-hover: #222838;
      --dm-text-main: #f5f6f9;
      --dm-text-sub: #9ba3b5;
      --dm-text-muted: #646d82;
      --dm-border: #283042;
      --dm-border-focus: #3d4a66;
      --dm-radius-sm: 8px;
      --dm-radius-md: 14px;
      --dm-radius-lg: 20px;
      --dm-radius-pill: 999px;
      --dm-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
      --dm-shadow-neon: 0 0 25px rgba(255, 0, 85, 0.35);
      --dm-transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      background-color: var(--dm-bg-main);
      color: var(--dm-text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1220px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航系统：分屏呼应式 */
    .dm-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(11, 12, 16, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--dm-border);
    }
    .dm-nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .dm-logo-block {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .dm-brand-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--dm-primary), var(--dm-accent));
      border-radius: var(--dm-radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 20px;
      color: #fff;
      box-shadow: var(--dm-shadow-neon);
    }
    .dm-brand-title {
      font-size: 22px;
      font-weight: 800;
      letter-spacing: 0.5px;
      color: #fff;
    }
    .dm-nav-actions {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .dm-nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--dm-text-sub);
      padding: 8px 14px;
      border-radius: var(--dm-radius-sm);
      transition: var(--dm-transition);
    }
    .dm-nav-link.active,
    .dm-nav-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.05);
    }
    .dm-nav-btn {
      background: linear-gradient(90deg, var(--dm-primary), #ff2a75);
      color: #fff;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--dm-radius-pill);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 18px var(--dm-primary-glow);
      transition: var(--dm-transition);
    }
    .dm-nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(255, 0, 85, 0.45);
    }

    /* 模块通用头 */
    .section-head {
      margin-bottom: 44px;
    }
    .section-head.center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .dm-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--dm-primary);
      background: rgba(255, 0, 85, 0.12);
      border: 1px solid rgba(255, 0, 85, 0.28);
      padding: 4px 12px;
      border-radius: var(--dm-radius-pill);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 14px;
      color: #fff;
    }
    .section-desc {
      font-size: 15px;
      color: var(--dm-text-sub);
      line-height: 1.7;
    }

    /* Hero: 新品发布 + 倒计时环 + 卖点要点 + 预约试用 */
    .dm-hero-sec {
      padding: 70px 0 80px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 0, 85, 0.12) 0%, transparent 60%),
                  radial-gradient(circle at 10% 60%, rgba(0, 242, 254, 0.08) 0%, transparent 50%);
      border-bottom: 1px solid var(--dm-border);
    }
    .dm-hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .dm-hero-h1 {
      font-size: 38px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      background: linear-gradient(180deg, #ffffff 30%, #cfd5e4 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .dm-hero-lead {
      font-size: 16px;
      color: var(--dm-text-sub);
      margin-bottom: 28px;
      line-height: 1.75;
    }
    .dm-hero-bullets {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-bottom: 32px;
    }
    .dm-bullet-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #e0e5f0;
      background: rgba(255, 255, 255, 0.03);
      padding: 10px 14px;
      border-radius: var(--dm-radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.06);
    }
    .dm-bullet-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--dm-accent);
      box-shadow: 0 0 8px var(--dm-accent);
      flex-shrink: 0;
    }
    .dm-hero-panel {
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-lg);
      padding: 32px;
      box-shadow: var(--dm-shadow);
      position: relative;
    }
    .dm-countdown-box {
      text-align: center;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--dm-border);
      margin-bottom: 24px;
    }
    .dm-ring-metric {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-top: 14px;
    }
    .dm-timer-unit {
      background: var(--dm-bg-card);
      border: 1px solid var(--dm-border);
      padding: 12px 16px;
      border-radius: var(--dm-radius-md);
      min-width: 66px;
    }
    .dm-timer-val {
      font-size: 24px;
      font-weight: 800;
      color: var(--dm-primary);
      font-family: monospace;
    }
    .dm-timer-lbl {
      font-size: 11px;
      color: var(--dm-text-muted);
      text-transform: uppercase;
      margin-top: 2px;
    }
    .dm-hero-form {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .dm-input {
      background: var(--dm-bg-card);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-sm);
      padding: 14px 18px;
      font-size: 14px;
      color: #fff;
      outline: none;
      transition: var(--dm-transition);
    }
    .dm-input:focus {
      border-color: var(--dm-primary);
      box-shadow: 0 0 0 3px rgba(255, 0, 85, 0.2);
    }
    .dm-hero-btn {
      background: linear-gradient(90deg, var(--dm-primary), #ff2a75);
      border: none;
      color: #fff;
      font-size: 15px;
      font-weight: 700;
      padding: 14px;
      border-radius: var(--dm-radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 20px var(--dm-primary-glow);
      transition: var(--dm-transition);
    }
    .dm-hero-btn:hover {
      filter: brightness(1.1);
      transform: translateY(-2px);
    }

    /* 样式通用 section */
    .dm-section {
      padding: 72px 0;
      border-bottom: 1px solid var(--dm-border);
    }
    .dm-section.alt-bg {
      background: #0f1118;
    }

    /* 3/4列卡片网格 */
    .dm-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .dm-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .dm-grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    /* 卡片基础 */
    .dm-card {
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-md);
      padding: 26px;
      transition: var(--dm-transition);
      position: relative;
    }
    .dm-card:hover {
      border-color: var(--dm-border-focus);
      transform: translateY(-4px);
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    }
    .dm-card-badge {
      display: inline-block;
      font-size: 11px;
      color: var(--dm-accent);
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid rgba(0, 242, 254, 0.25);
      border-radius: var(--dm-radius-pill);
      padding: 2px 10px;
      margin-bottom: 14px;
    }
    .dm-card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: #fff;
    }
    .dm-card-desc {
      font-size: 13.5px;
      color: var(--dm-text-sub);
      line-height: 1.65;
    }

    /* 场景演示：左右分屏式工作台预览 */
    .dm-stage-wrap {
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-lg);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .dm-stage-panel {
      padding: 36px;
    }
    .dm-stage-panel.preview {
      background: #090a0d;
      border-left: 1px solid var(--dm-border);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .dm-step-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
      margin-top: 20px;
    }
    .dm-step-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .dm-step-index {
      width: 28px;
      height: 28px;
      background: var(--dm-bg-card);
      border: 1px solid var(--dm-primary);
      color: var(--dm-primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 800;
      flex-shrink: 0;
    }
    .dm-step-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 4px;
    }
    .dm-step-info p {
      font-size: 13px;
      color: var(--dm-text-sub);
    }
    .dm-mock-timeline {
      background: var(--dm-bg-card);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-md);
      padding: 20px;
    }
    .dm-mock-track {
      background: rgba(255, 255, 255, 0.04);
      height: 38px;
      border-radius: 6px;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      padding: 0 12px;
      gap: 8px;
      font-size: 12px;
      color: var(--dm-text-sub);
      border: 1px dashed var(--dm-border);
    }
    .dm-track-block {
      height: 22px;
      background: linear-gradient(90deg, var(--dm-primary), #a800ff);
      border-radius: 4px;
      display: inline-flex;
      align-items: center;
      padding: 0 10px;
      font-size: 11px;
      color: #fff;
      font-weight: 600;
    }

    /* 热招职位卡片 */
    .dm-job-card {
      background: var(--dm-bg-card);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .dm-job-meta {
      display: flex;
      gap: 8px;
      margin: 10px 0 14px;
    }
    .dm-job-pill {
      font-size: 11.5px;
      color: var(--dm-text-sub);
      background: rgba(255, 255, 255, 0.05);
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 价格票档对比 */
    .dm-price-card {
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-lg);
      padding: 34px 28px;
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .dm-price-card.featured {
      border-color: var(--dm-primary);
      box-shadow: 0 0 35px var(--dm-primary-glow);
    }
    .dm-price-tag {
      font-size: 38px;
      font-weight: 900;
      color: #fff;
      margin: 16px 0;
    }
    .dm-price-tag span {
      font-size: 14px;
      font-weight: 400;
      color: var(--dm-text-muted);
    }
    .dm-price-features {
      list-style: none;
      margin-bottom: 26px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 13.5px;
      color: var(--dm-text-sub);
    }
    .dm-price-features li {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .dm-price-features li::before {
      content: "✓";
      color: var(--dm-accent);
      font-weight: 800;
    }
    .dm-btn-outline {
      background: transparent;
      border: 1px solid var(--dm-border);
      color: #fff;
      padding: 12px;
      border-radius: var(--dm-radius-sm);
      font-weight: 600;
      cursor: pointer;
      text-align: center;
      transition: var(--dm-transition);
      margin-top: auto;
    }
    .dm-btn-outline:hover {
      border-color: var(--dm-primary);
      background: rgba(255, 0, 85, 0.1);
    }

    /* 评价气泡墙 */
    .dm-quote-card {
      background: var(--dm-bg-card);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-md);
      padding: 24px;
    }
    .dm-quote-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
    }
    .dm-quote-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--dm-primary), #3b82f6);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      color: #fff;
    }
    .dm-quote-name {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
    }
    .dm-quote-role {
      font-size: 12px;
      color: var(--dm-text-muted);
    }

    /* 资讯列表网格 */
    .dm-news-item {
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-md);
      padding: 22px;
      transition: var(--dm-transition);
    }
    .dm-news-item:hover {
      border-color: var(--dm-accent);
    }
    .dm-news-date {
      font-size: 12px;
      color: var(--dm-accent);
      margin-bottom: 8px;
    }

    /* 路线图与安全保障条 */
    .dm-sec-badges {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 20px;
      padding: 30px;
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-lg);
    }
    .dm-sec-badge-item {
      display: flex;
      align-items: center;
      gap: 12px;
      max-width: 250px;
    }
    .dm-sec-badge-icon {
      font-size: 26px;
      color: var(--dm-accent);
    }

    /* FAQ 模块样式 */
    .dm-faq-item {
      background: var(--dm-bg-surface);
      border: 1px solid var(--dm-border);
      border-radius: var(--dm-radius-md);
      padding: 22px 26px;
      margin-bottom: 16px;
    }
    .dm-faq-q {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .dm-faq-q::before {
      content: "Q";
      color: var(--dm-primary);
      font-weight: 900;
    }
    .dm-faq-a {
      font-size: 14px;
      color: var(--dm-text-sub);
      line-height: 1.7;
    }

    /* 转化收口区 */
    .dm-cta-block {
      background: linear-gradient(135deg, rgba(255, 0, 85, 0.15), rgba(0, 242, 254, 0.1)), var(--dm-bg-surface);
      border: 1px solid rgba(255, 0, 85, 0.3);
      border-radius: var(--dm-radius-lg);
      padding: 56px 40px;
      text-align: center;
      box-shadow: var(--dm-shadow-neon);
    }

    /* 页脚 */
    .dm-footer {
      background: #07080b;
      border-top: 1px solid var(--dm-border);
      padding: 50px 0 30px;
      font-size: 13px;
      color: var(--dm-text-muted);
    }
    .dm-footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .dm-footer-col h5 {
      color: #fff;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .dm-footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .dm-footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .dm-grid-4 { grid-template-columns: repeat(2, 1fr); }
      .dm-grid-3 { grid-template-columns: repeat(2, 1fr); }
      .dm-hero-grid { grid-template-columns: 1fr; gap: 36px; }
      .dm-stage-wrap { grid-template-columns: 1fr; }
      .dm-footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .dm-grid-3, .dm-grid-2 { grid-template-columns: 1fr; }
      .dm-hero-bullets { grid-template-columns: 1fr; }
      .dm-hero-h1 { font-size: 28px; }
      .dm-section { padding: 50px 0; }
      .dm-sec-badges { flex-direction: column; align-items: flex-start; }
      .dm-footer-grid { grid-template-columns: 1fr; }
    }