/* roulang page: index */
:root {
      --bg-dark: #0a0b0e;
      --bg-card: #12141a;
      --bg-card-hover: #1a1d26;
      --bg-soft: #161822;
      --primary: #ff3366;
      --primary-hover: #ff1a53;
      --primary-glow: rgba(255, 51, 102, 0.35);
      --secondary: #7928ca;
      --accent: #00f0ff;
      --text-main: #f5f6fa;
      --text-muted: #8e95a5;
      --text-dim: #5c6273;
      --border: rgba(255, 255, 255, 0.08);
      --border-light: rgba(255, 255, 255, 0.15);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.3);
      --shadow-md: 0 10px 30px rgba(0,0,0,0.5);
      --shadow-glow: 0 0 25px var(--primary-glow);
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 14, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 24px;
      font-weight: 800;
      letter-spacing: 1px;
      color: #fff;
    }

    .brand-logo span.dot {
      width: 10px;
      height: 10px;
      background: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 12px var(--primary);
      display: inline-block;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .nav-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .nav-btn-primary {
      background: linear-gradient(135deg, var(--primary), #e0004d);
      color: #fff;
      box-shadow: 0 4px 15px var(--primary-glow);
    }

    .nav-btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 51, 102, 0.5);
    }

    /* 基础板块 */
    section {
      padding: 85px 0;
      position: relative;
    }

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

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

    .section-header.text-center {
      text-align: center;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

    .badge-tag {
      display: inline-block;
      padding: 5px 14px;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(255, 51, 102, 0.12);
      border: 1px solid rgba(255, 51, 102, 0.3);
      border-radius: 50px;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 34px;
      font-weight: 700;
      line-height: 1.35;
      color: #fff;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 闪购倒计时条 (版式要求组件) */
    .flash-alert-bar {
      background: linear-gradient(90deg, #1b0a1a 0%, #150f24 50%, #0c1824 100%);
      border-bottom: 1px solid rgba(255, 51, 102, 0.25);
      padding: 12px 0;
      font-size: 13px;
    }

    .flash-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    .flash-timer-box {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .timer-unit {
      background: rgba(255, 255, 255, 0.12);
      color: #fff;
      padding: 2px 7px;
      border-radius: 4px;
      font-weight: 700;
      font-family: monospace;
    }

    .flash-tag {
      color: var(--accent);
      font-weight: 600;
    }

    /* 板块 1: Hero 斜向错位 5:7 结构 */
    .hero-section {
      padding: 70px 0 100px;
      background: radial-gradient(circle at 85% 20%, rgba(121, 40, 202, 0.22) 0%, rgba(10, 11, 14, 0) 70%),
                  radial-gradient(circle at 10% 60%, rgba(255, 51, 102, 0.15) 0%, rgba(10, 11, 14, 0) 60%);
      overflow: hidden;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 5fr 7fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.5px;
      color: #ffffff;
      margin-bottom: 20px;
    }

    .hero-title .gradient-text {
      background: linear-gradient(135deg, #fff 20%, #ff3366 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 16px;
      color: #a4acbd;
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .hero-cta-group {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }

    .btn-main {
      padding: 14px 34px;
      font-size: 15px;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), #e0004d);
      border-radius: var(--radius-sm);
      box-shadow: 0 6px 22px var(--primary-glow);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .btn-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 28px rgba(255, 51, 102, 0.55);
    }

    .btn-outline {
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 600;
      color: #d1d5db;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
    }

    .hero-kpi-bar {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid var(--border);
    }

    .kpi-num {
      font-size: 26px;
      font-weight: 800;
      color: #fff;
      line-height: 1.1;
      margin-bottom: 4px;
    }

    .kpi-num span {
      color: var(--primary);
      font-size: 18px;
    }

    .kpi-label {
      font-size: 12px;
      color: var(--text-dim);
      font-weight: 500;
    }

    .hero-media-wrapper {
      position: relative;
      transform: perspective(1000px) rotateY(-6deg) rotateX(2deg);
      transition: transform 0.5s ease;
    }

    .hero-media-wrapper:hover {
      transform: perspective(1000px) rotateY(-2deg) rotateX(1deg);
    }

    .hero-media-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md), 0 0 40px rgba(0, 0, 0, 0.8);
      border: 1px solid var(--border-light);
      aspect-ratio: 16/10;
      background: #000;
    }

    .hero-media-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: brightness(0.95);
    }

    .hero-floating-badge {
      position: absolute;
      bottom: -20px;
      left: -20px;
      background: rgba(18, 20, 26, 0.95);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.15);
      padding: 16px 22px;
      border-radius: var(--radius-md);
      box-shadow: 0 12px 30px rgba(0,0,0,0.6);
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .pulse-indicator {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: #00ff88;
      box-shadow: 0 0 10px #00ff88;
    }

    /* 板块 2: 秒杀闪购轨 (版式蓝图专用) */
    .flash-sale-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .flash-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .flash-card:hover {
      border-color: rgba(255, 51, 102, 0.5);
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }

    .flash-card-img {
      height: 190px;
      position: relative;
      overflow: hidden;
    }

    .flash-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .flash-card:hover .flash-card-img img {
      transform: scale(1.05);
    }

    .stock-badge {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(255, 51, 102, 0.92);
      color: #fff;
      font-size: 11px;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 4px;
    }

    .flash-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .flash-body h3 {
      font-size: 18px;
      margin-bottom: 8px;
      color: #fff;
    }

    .flash-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .flash-action-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 14px;
      border-top: 1px solid var(--border);
    }

    .flash-price {
      font-size: 20px;
      font-weight: 800;
      color: #fff;
    }

    .flash-price small {
      font-size: 12px;
      color: var(--text-dim);
      text-decoration: line-through;
      margin-left: 4px;
    }

    .btn-sm-grab {
      background: var(--primary);
      color: #fff;
      padding: 8px 16px;
      font-size: 13px;
      font-weight: 600;
      border-radius: 6px;
    }

    /* 板块 3: 痛点比对 (叙事转化流) */
    .contrast-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .contrast-panel {
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
    }

    .contrast-bad {
      background: rgba(26, 18, 22, 0.6);
      border-color: rgba(255, 68, 68, 0.2);
    }

    .contrast-good {
      background: rgba(18, 28, 26, 0.6);
      border-color: rgba(0, 240, 150, 0.25);
      box-shadow: 0 0 30px rgba(0, 240, 150, 0.05);
    }

    .contrast-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .contrast-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .contrast-list li {
      font-size: 14px;
      line-height: 1.6;
      color: #b5bcc9;
      display: flex;
      align-items: flex-start;
      gap: 12px;
    }

    /* 板块 4: 产品核心价值 */
    .values-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .value-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      transition: var(--transition);
    }

    .value-card:hover {
      border-color: var(--primary);
      transform: translateY(-5px);
    }

    .value-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(255, 51, 102, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .value-card h3 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 10px;
    }

    .value-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 功能展示 (强排版图文) */
    .feature-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      margin-bottom: 70px;
    }

    .feature-row:last-child {
      margin-bottom: 0;
    }

    .feature-row.reverse {
      direction: rtl;
    }

    .feature-row.reverse .feature-text-block {
      direction: ltr;
    }

    .feature-row.reverse .feature-thumb {
      direction: ltr;
    }

    .feature-thumb {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-md);
      height: 340px;
    }

    .feature-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .feature-text-block h3 {
      font-size: 26px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
    }

    .feature-text-block p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    .feature-checklist {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .feature-checklist li {
      font-size: 13px;
      color: #d1d5db;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 板块 6: 三步上手 (极简流程) */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      position: relative;
    }

    .step-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      position: relative;
    }

    .step-number {
      font-size: 42px;
      font-weight: 900;
      font-family: monospace;
      color: rgba(255, 255, 255, 0.08);
      position: absolute;
      top: 20px;
      right: 24px;
      line-height: 1;
    }

    .step-badge {
      display: inline-block;
      padding: 4px 10px;
      font-size: 11px;
      font-weight: 700;
      border-radius: 4px;
      background: var(--primary);
      color: #fff;
      margin-bottom: 18px;
    }

    .step-item h3 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 12px;
    }

    .step-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 7: 成果数据指标 */
    .stats-strip {
      background: linear-gradient(135deg, rgba(255,51,102,0.1), rgba(121,40,202,0.1));
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 45px 30px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .stat-strip-box .num {
      font-size: 38px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 6px;
      letter-spacing: -1px;
    }

    .stat-strip-box .desc {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 8: 多端入口矩阵 */
    .platforms-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .platform-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      text-align: center;
      transition: var(--transition);
    }

    .platform-card:hover {
      background: var(--bg-card-hover);
      border-color: var(--primary);
      transform: translateY(-4px);
    }

    .platform-icon {
      font-size: 32px;
      margin-bottom: 14px;
    }

    .platform-card h3 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 6px;
    }

    .platform-card p {
      font-size: 12px;
      color: var(--text-dim);
      margin-bottom: 14px;
    }

    .platform-tag {
      font-size: 11px;
      color: var(--accent);
      background: rgba(0, 240, 255, 0.1);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
    }

    /* 板块 9: 评价墙 (客户证言) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testi-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      position: relative;
    }

    .testi-stars {
      color: #ffb703;
      font-size: 14px;
      margin-bottom: 14px;
    }

    .testi-card p {
      font-size: 13px;
      color: #cbd5e1;
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .avatar-char {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--secondary), var(--primary));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 14px;
    }

    .author-info h4 {
      font-size: 14px;
      color: #fff;
    }

    .author-info span {
      font-size: 11px;
      color: var(--text-dim);
    }

    /* 板块 10: 适用人群矩阵 */
    .persona-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .persona-card {
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-card);
    }

    .persona-img {
      height: 180px;
    }

    .persona-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .persona-body {
      padding: 24px;
    }

    .persona-body h3 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 8px;
    }

    .persona-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 11: 系统要求与环境标准 */
    .specs-table-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 30px;
    }

    .specs-grid-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .spec-column h3 {
      font-size: 17px;
      color: #fff;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--border);
    }

    .spec-item {
      display: flex;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
      font-size: 13px;
    }

    .spec-item span.label {
      color: var(--text-dim);
    }

    .spec-item span.val {
      color: #fff;
      font-weight: 500;
    }

    /* 板块 12: 视听资讯与前沿动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .news-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .news-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
    }

    .news-img {
      height: 190px;
      position: relative;
    }

    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-body {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .news-date {
      font-size: 11px;
      color: var(--primary);
      margin-bottom: 8px;
      font-weight: 600;
    }

    .news-body h3 {
      font-size: 17px;
      color: #fff;
      line-height: 1.4;
      margin-bottom: 10px;
    }

    .news-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 12px;
      font-weight: 600;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 13: 终极 CTA 收口 */
    .final-cta-section {
      background: radial-gradient(circle at 50% 50%, rgba(255, 51, 102, 0.16) 0%, rgba(10, 11, 14, 0.95) 75%), var(--bg-soft);
      border-top: 1px solid var(--border);
      text-align: center;
      padding: 90px 0;
    }

    .cta-box {
      max-width: 680px;
      margin: 0 auto;
    }

    .cta-title {
      font-size: 36px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 18px;
    }

    .cta-desc {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 34px;
      line-height: 1.8;
    }

    /* 页脚 */
    footer.site-footer {
      background: #08090b;
      border-top: 1px solid var(--border);
      padding: 60px 0 35px;
      font-size: 13px;
      color: var(--text-dim);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 45px;
    }

    .footer-brand h4 {
      font-size: 20px;
      color: #fff;
      margin-bottom: 12px;
      font-weight: 700;
    }

    .footer-brand p {
      line-height: 1.7;
      max-width: 320px;
    }

    .footer-col h5 {
      font-size: 14px;
      color: #fff;
      margin-bottom: 16px;
      font-weight: 600;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-media-wrapper {
        transform: none;
      }
      .values-grid,
      .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flash-sale-grid,
      .steps-grid,
      .testimonials-grid,
      .persona-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 60px 0;
      }
      .hero-title {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .contrast-wrapper,
      .feature-row,
      .feature-row.reverse,
      .specs-grid-row {
        grid-template-columns: 1fr;
        gap: 30px;
      }
      .feature-row.reverse {
        direction: ltr;
      }
      .flash-sale-grid,
      .steps-grid,
      .testimonials-grid,
      .persona-grid,
      .news-grid,
      .values-grid,
      .platforms-grid {
        grid-template-columns: 1fr;
      }
      .hero-kpi-bar {
        grid-template-columns: 1fr;
      }
      .stats-strip {
        grid-template-columns: 1fr;
        gap: 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }