/* roulang page: index */
:root {
      --bg-dark: #0D0F12;
      --bg-card: #15181E;
      --bg-alt: #1A202C;
      --primary: #00FF87;
      --primary-hover: #00df76;
      --accent-purple: #7928CA;
      --accent-blue: #0070F3;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-line: rgba(255, 255, 255, 0.08);
      --border-active: rgba(0, 255, 135, 0.45);
      --shadow-glow: 0 8px 32px rgba(0, 255, 135, 0.08);
      --radius-sm: 6px;
      --radius-md: 10px;
    }

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

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--text-main);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-dark);
      color: var(--text-main);
      letter-spacing: -0.3px;
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease-out;
    }

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

    /* 刊头双行导航 */
    .mag-header {
      background: rgba(13, 15, 18, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-line);
      position: sticky;
      top: 0;
      z-index: 1020;
    }

    .mag-header-top {
      border-bottom: 1px solid var(--border-line);
      padding: 10px 0;
      font-size: 13px;
    }

    .mag-brand-title {
      font-size: 22px;
      font-weight: 900;
      letter-spacing: -0.5px;
      color: var(--text-main);
      display: inline-flex;
      align-items: center;
    }

    .mag-brand-title .dot {
      color: var(--primary);
      margin-left: 2px;
    }

    .ticker-tag {
      background: rgba(0, 255, 135, 0.12);
      color: var(--primary);
      font-size: 11px;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      margin-right: 8px;
    }

    .header-subinfo {
      color: var(--text-muted);
    }

    .header-subinfo span {
      margin-left: 16px;
    }

    .mag-header-nav {
      padding: 8px 0;
    }

    .nav-channel-links {
      display: flex;
      gap: 20px;
      list-style: none;
      margin: 0;
      padding: 0;
      align-items: center;
      overflow-x: auto;
      white-space: nowrap;
    }

    .nav-channel-links a {
      color: var(--text-muted);
      font-size: 14px;
      font-weight: 500;
      padding: 6px 2px;
      position: relative;
    }

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

    .nav-channel-links a.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
    }

    /* 按钮规范 */
    .btn-brand-primary {
      background: var(--primary);
      color: #000 !important;
      font-weight: 700;
      border: 1px solid var(--primary);
      border-radius: var(--radius-sm);
      padding: 9px 22px;
      transition: all 0.25s ease-out;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
    }

    .btn-brand-primary:hover {
      background: var(--primary-hover);
      border-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 4px 20px rgba(0, 255, 135, 0.3);
    }

    .btn-brand-ghost {
      background: transparent;
      color: var(--text-main) !important;
      font-weight: 600;
      border: 1px solid var(--border-line);
      border-radius: var(--radius-sm);
      padding: 9px 22px;
      transition: all 0.25s ease-out;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .btn-brand-ghost:hover {
      border-color: rgba(255, 255, 255, 0.35);
      background: rgba(255, 255, 255, 0.04);
      transform: translateY(-2px);
    }

    /* Section 通用规范 */
    section {
      padding: 85px 0;
      position: relative;
      scroll-margin-top: 110px;
    }

    .section-dark {
      background-color: var(--bg-dark);
    }

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

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

    .sec-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 8px;
      display: inline-block;
    }

    .sec-title {
      font-size: 32px;
      font-weight: 800;
      letter-spacing: -0.8px;
      margin-bottom: 14px;
      line-height: 1.25;
    }

    .sec-desc {
      color: var(--text-muted);
      font-size: 15px;
      max-width: 820px;
      margin-bottom: 35px;
      line-height: 1.7;
    }

    /* 卡片通用 */
    .stream-card {
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      transition: all 0.25s ease-out;
      padding: 24px;
      height: 100%;
    }

    .stream-card:hover {
      border-color: var(--border-active);
      box-shadow: var(--shadow-glow);
      transform: translateY(-3px);
    }

    /* 首屏 Hero 工具落地样式 */
    .hero-section {
      padding: 70px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 255, 135, 0.06) 0%, rgba(13, 15, 18, 0) 70%), var(--bg-dark);
      border-bottom: 1px solid var(--border-line);
    }

    .hero-h1 {
      font-size: 44px;
      font-weight: 900;
      line-height: 1.15;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-h1 span {
      background: linear-gradient(90deg, #FFFFFF, var(--primary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro-text {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .hero-demo-box {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      overflow: hidden;
      position: relative;
    }

    .demo-bar {
      padding: 10px 16px;
      background: rgba(0, 0, 0, 0.4);
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-line);
      font-size: 12px;
      color: var(--text-muted);
    }

    .demo-status {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-weight: 600;
    }

    .live-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 8px var(--primary);
    }

    .demo-content-wrap {
      position: relative;
    }

    .demo-content-wrap img {
      width: 100%;
      height: 280px;
      object-fit: cover;
    }

    .demo-overlay-stats {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      padding: 14px 18px;
      background: linear-gradient(180deg, transparent 0%, rgba(13, 15, 18, 0.95) 100%);
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
    }

    /* 倒计时条 (板块二) */
    .countdown-bar {
      background: rgba(0, 255, 135, 0.04);
      border: 1px solid rgba(0, 255, 135, 0.15);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }

    .countdown-timer-group {
      display: flex;
      gap: 12px;
    }

    .timer-unit {
      background: #0D0F12;
      border: 1px solid var(--border-line);
      padding: 10px 16px;
      border-radius: var(--radius-sm);
      text-align: center;
      min-width: 68px;
    }

    .timer-val {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }

    .timer-lbl {
      font-size: 11px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 技术指标参数卡片 (板块四) */
    .tech-metric-box {
      border-left: 2px solid var(--primary);
      padding-left: 18px;
      margin-bottom: 24px;
    }

    .tech-metric-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .tech-metric-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 权益与礼包卡 (板块五) */
    .benefit-item {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .benefit-badge {
      position: absolute;
      top: 14px;
      right: 14px;
      font-size: 11px;
      background: rgba(121, 40, 202, 0.25);
      border: 1px solid rgba(121, 40, 202, 0.5);
      color: #D8B4FE;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }

    /* 步骤流程卡 (板块六) */
    .step-node {
      position: relative;
      padding: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      height: 100%;
    }

    .step-order {
      font-size: 28px;
      font-weight: 900;
      color: var(--primary);
      opacity: 0.9;
      margin-bottom: 12px;
      line-height: 1;
    }

    /* 核心数据条 (板块八) */
    .stat-strip-box {
      border-right: 1px solid var(--border-line);
      padding: 20px 24px;
    }

    .stat-strip-box:last-child {
      border-right: none;
    }

    .stat-strip-num {
      font-size: 38px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }

    .stat-strip-name {
      font-size: 13px;
      color: var(--text-muted);
      letter-spacing: 0.5px;
    }

    /* 资讯列表项 (板块九) */
    .insight-post-row {
      display: flex;
      gap: 20px;
      padding: 20px 0;
      border-bottom: 1px solid var(--border-line);
      align-items: center;
    }

    .insight-post-row:last-child {
      border-bottom: none;
    }

    .insight-post-thumb {
      width: 140px;
      height: 85px;
      flex-shrink: 0;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-line);
    }

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

    .insight-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 4px;
    }

    .insight-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .insight-title a:hover {
      color: var(--primary);
    }

    .insight-snippet {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 口碑评价卡 (板块十) */
    .review-bubble-card {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 24px;
      height: 100%;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .reviewer-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: rgba(0, 255, 135, 0.15);
      border: 1px solid var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
      font-size: 14px;
    }

    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .review-body {
      font-size: 14px;
      color: #CBD5E1;
      line-height: 1.6;
    }

    /* FAQ 手风琴深度覆盖 (板块十一) */
    .faq-accordion .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      margin-bottom: 12px;
      border-radius: var(--radius-sm) !important;
      overflow: hidden;
    }

    .faq-accordion .accordion-button {
      background: var(--bg-card);
      color: var(--text-main);
      font-weight: 700;
      font-size: 16px;
      padding: 18px 20px;
      box-shadow: none !important;
    }

    .faq-accordion .accordion-button:not(.collapsed) {
      background: rgba(0, 255, 135, 0.05);
      color: var(--primary);
      border-bottom: 1px solid var(--border-line);
    }

    .faq-accordion .accordion-button::after {
      filter: invert(1);
    }

    .faq-accordion .accordion-button:not(.collapsed)::after {
      filter: invert(72%) sepia(50%) saturate(1450%) hue-rotate(95deg) brightness(105%) contrast(105%);
    }

    .faq-accordion .accordion-body {
      padding: 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      background: var(--bg-card);
    }

    /* 转化报名区 (板块十二) */
    .register-form-box {
      background: var(--bg-card);
      border: 1px solid var(--border-line);
      border-radius: var(--radius-md);
      padding: 36px;
      max-width: 680px;
      margin: 0 auto;
    }

    .form-control-brand {
      background: #0D0F12;
      border: 1px solid var(--border-line);
      color: var(--text-main);
      padding: 12px 16px;
      border-radius: var(--radius-sm);
    }

    .form-control-brand:focus {
      background: #0D0F12;
      color: var(--text-main);
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(0, 255, 135, 0.2);
    }

    /* 保障条与固定底栏 */
    .guarantee-icon-bar {
      border-top: 1px solid var(--border-line);
      padding: 30px 0;
      background: #0D0F12;
    }

    .guarantee-point {
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text-muted);
      font-size: 14px;
    }

    .guarantee-point b {
      color: var(--text-main);
    }

    .sticky-bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(13, 15, 18, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid var(--border-line);
      padding: 12px 0;
      z-index: 1010;
      display: none;
    }

    /* 杂志式页脚 */
    .mag-footer {
      background: #0A0C0E;
      border-top: 1px solid var(--border-line);
      padding: 70px 0 35px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .footer-col-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .footer-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

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

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

    .footer-bottom-line {
      margin-top: 50px;
      padding-top: 25px;
      border-top: 1px solid var(--border-line);
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 991px) {
      .hero-h1 {
        font-size: 34px;
      }
      .sec-title {
        font-size: 26px;
      }
      .stat-strip-box {
        border-right: none;
        border-bottom: 1px solid var(--border-line);
      }
      .stat-strip-box:last-child {
        border-bottom: none;
      }
      .sticky-bottom-bar {
        display: block;
      }
      body {
        padding-bottom: 60px;
      }
    }

    @media (max-width: 575px) {
      .hero-h1 {
        font-size: 28px;
      }
      .countdown-bar {
        flex-direction: column;
        align-items: flex-start;
      }
      .insight-post-row {
        flex-direction: column;
        align-items: flex-start;
      }
      .insight-post-thumb {
        width: 100%;
        height: 160px;
      }
    }