/* roulang page: index */
:root {
      --primary-color: #6366f1;
      --primary-hover: #4f46e5;
      --secondary-color: #ec4899;
      --accent-gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
      --bg-light: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --radius-lg: 24px;
      --radius-md: 16px;
      --radius-sm: 8px;
      --shadow-soft: 0 10px 30px -5px rgba(99, 102, 241, 0.08);
      --shadow-hover: 0 20px 35px -5px rgba(99, 102, 241, 0.16);
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      margin: 0;
      padding: 0;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.3s ease;
    }

    /* 顶部导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
    }
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.25rem;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .brand-logo i {
      color: var(--primary-color);
      -webkit-text-fill-color: initial;
      font-size: 1.4rem;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      list-style: none;
      margin: 0;
      align-items: center;
    }
    .nav-links a {
      font-weight: 600;
      color: var(--text-muted);
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-color);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-gradient);
      border-radius: 2px;
    }
    .header-btn {
      background: var(--accent-gradient);
      color: #fff !important;
      padding: 8px 20px;
      border-radius: 50px;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    }

    /* 容器公用 */
    .section-wrap {
      padding: 70px 0;
    }
    .section-wrap.alt-bg {
      background: #ffffff;
    }
    .section-title-wrap {
      margin-bottom: 40px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(99, 102, 241, 0.1);
      color: var(--primary-color);
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .section-desc {
      max-width: 680px;
      margin: 0 auto;
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    /* 蓝图：Hero 卡片堆叠 */
    .hero-section {
      padding: 80px 0 60px;
      background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.05) 90%);
      overflow: hidden;
    }
    .hero-main-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 2.3rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .hero-h1 span {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      color: var(--text-muted);
      font-size: 1rem;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .hero-stats-row {
      display: flex;
      gap: 20px;
      margin-bottom: 28px;
    }
    .hero-stat-badge {
      background: var(--bg-light);
      padding: 12px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .hero-stat-badge strong {
      display: block;
      font-size: 1.25rem;
      color: var(--primary-color);
    }
    .hero-stat-badge span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .hero-btn-group {
      display: flex;
      gap: 14px;
    }
    .btn-main {
      background: var(--accent-gradient);
      color: #fff;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: 50px;
      box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    }
    .btn-main:hover {
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
      color: #fff;
    }

    /* 卡片堆叠展示侧卡 */
    .hero-stack-wrap {
      position: relative;
      height: 100%;
      min-height: 380px;
    }
    .stack-card {
      position: absolute;
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      width: 85%;
      transition: all 0.4s ease;
    }
    .stack-card-1 {
      top: 0;
      right: 0;
      z-index: 1;
      transform: rotate(2deg);
    }
    .stack-card-2 {
      bottom: 0;
      left: 10px;
      z-index: 3;
      transform: rotate(-2deg);
      border-color: rgba(99, 102, 241, 0.3);
    }
    .stack-card:hover {
      transform: translateY(-5px) rotate(0deg);
      z-index: 4;
    }

    /* 圆角大卡与列表 */
    .big-card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-soft);
      height: 100%;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .big-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .card-icon {
      width: 48px;
      height: 48px;
      background: rgba(99, 102, 241, 0.1);
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      margin-bottom: 16px;
      font-size: 1.25rem;
    }
    .card-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .card-text {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.6;
    }

    /* 日历紧凑条 */
    .calendar-strip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
      transition: all 0.3s ease;
    }
    .calendar-strip:hover {
      border-color: var(--primary-color);
      box-shadow: var(--shadow-soft);
    }
    .cal-date {
      font-weight: 800;
      color: var(--primary-color);
      min-width: 90px;
    }

    /* 资讯网格 */
    .news-item-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      margin-bottom: 20px;
    }
    .news-item-body {
      padding: 20px;
    }

    /* 数据指标卡 */
    .kpi-box {
      text-align: center;
      padding: 24px;
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .kpi-number {
      font-size: 2.2rem;
      font-weight: 800;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 6px;
    }

    /* 订阅条与白皮书 */
    .sub-banner {
      background: var(--accent-gradient);
      border-radius: var(--radius-lg);
      padding: 45px;
      color: #ffffff;
    }
    .sub-form {
      display: flex;
      gap: 10px;
      margin-top: 15px;
    }
    .sub-input {
      border-radius: 50px !important;
      border: none !important;
      padding: 12px 20px !important;
      font-size: 0.95rem;
      box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    .sub-btn {
      background: #0f172a;
      color: #fff;
      border: none;
      border-radius: 50px;
      padding: 0 30px;
      font-weight: 700;
      cursor: pointer;
      white-space: nowrap;
    }

    /* 页脚 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 0.9rem;
    }
    .footer-brand {
      color: #ffffff;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 14px;
      display: inline-block;
    }
    .footer-links-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .footer-links-list li {
      margin-bottom: 8px;
    }
    .footer-links-list a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      margin-top: 40px;
      padding-top: 25px;
      text-align: center;
      font-size: 0.85rem;
    }

    @media (max-width: 768px) {
      .hero-stack-wrap {
        margin-top: 30px;
        min-height: auto;
      }
      .stack-card {
        position: relative;
        width: 100%;
        transform: none !important;
        margin-bottom: 15px;
      }
      .sub-form {
        flex-direction: column;
      }
      .header-inner {
        flex-direction: column;
        gap: 12px;
      }
    }

/* roulang page: category1 */
:root {
        --primary-color: #6366f1;
        --primary-hover: #4f46e5;
        --secondary-color: #ec4899;
        --accent-gradient: linear-gradient(135deg, #6366f1 0%, #ec4899 100%);
        --bg-light: #f8fafc;
        --bg-card: #ffffff;
        --text-main: #0f172a;
        --text-muted: #64748b;
        --border-color: #e2e8f0;
        --radius-lg: 24px;
        --radius-md: 16px;
        --radius-sm: 8px;
        --shadow-soft: 0 10px 30px -5px rgba(99, 102, 241, 0.08);
        --shadow-hover: 0 20px 35px -5px rgba(99, 102, 241, 0.16);
    }
    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        background-color: var(--bg-light);
        color: var(--text-main);
        line-height: 1.6;
        margin: 0;
        padding: 0;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    .site-header {
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    .header-inner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 0;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 1.25rem;
        background: var(--accent-gradient);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .brand-logo i {
        color: var(--primary-color);
        -webkit-text-fill-color: initial;
        font-size: 1.4rem;
    }
    .nav-links {
        display: flex;
        gap: 28px;
        list-style: none;
        margin: 0;
        align-items: center;
    }
    .nav-links a {
        font-weight: 600;
        color: var(--text-muted);
        position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
        color: var(--primary-color);
    }
    .nav-links a.active::after {
        content: '';
        position: absolute;
        bottom: -6px;
        left: 0;
        width: 100%;
        height: 2px;
        background: var(--accent-gradient);
        border-radius: 2px;
    }
    .header-btn {
        background: var(--accent-gradient);
        color: #fff !important;
        padding: 8px 20px;
        border-radius: 50px;
        box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    }
    .section-wrap {
        padding: 70px 0;
    }
    .section-wrap.alt-bg {
        background: #ffffff;
    }
    .section-title-wrap {
        margin-bottom: 40px;
        text-align: center;
    }
    .section-tag {
        display: inline-block;
        padding: 4px 14px;
        background: rgba(99, 102, 241, 0.1);
        color: var(--primary-color);
        border-radius: 30px;
        font-size: 0.85rem;
        font-weight: 600;
        margin-bottom: 12px;
    }
    .section-title {
        font-size: 2rem;
        font-weight: 800;
        margin-bottom: 12px;
        color: var(--text-main);
    }
    .section-desc {
        max-width: 680px;
        margin: 0 auto;
        color: var(--text-muted);
        font-size: 0.95rem;
    }
    /* Blueprint Hero: 文档帮助中心/搜索与热词 */
    .search-hero {
        padding: 75px 0 55px;
        background: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.09) 0%, rgba(236, 72, 153, 0.04) 100%);
        text-align: center;
        border-bottom: 1px solid var(--border-color);
    }
    .search-box-wrap {
        max-width: 640px;
        margin: 28px auto 20px;
        position: relative;
    }
    .search-input {
        width: 100%;
        height: 54px;
        padding: 10px 54px 10px 24px;
        border-radius: 50px;
        border: 2px solid rgba(99, 102, 241, 0.2);
        background: #ffffff;
        font-size: 0.95rem;
        box-shadow: var(--shadow-soft);
        outline: none;
    }
    .search-input:focus {
        border-color: var(--primary-color);
        box-shadow: var(--shadow-hover);
    }
    .search-icon-btn {
        position: absolute;
        right: 8px;
        top: 6px;
        width: 42px;
        height: 42px;
        border-radius: 50%;
        background: var(--accent-gradient);
        color: #fff;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
    }
    .chips-group {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        margin-top: 15px;
    }
    .chip-item {
        background: #ffffff;
        border: 1px solid var(--border-color);
        padding: 6px 14px;
        border-radius: 20px;
        font-size: 0.85rem;
        color: var(--text-muted);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .chip-item:hover {
        border-color: var(--primary-color);
        color: var(--primary-color);
    }
    /* 卡片与网格 */
    .big-card {
        background: var(--bg-card);
        border-radius: var(--radius-md);
        padding: 28px;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-soft);
        height: 100%;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .big-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    .card-icon {
        width: 48px;
        height: 48px;
        background: rgba(99, 102, 241, 0.1);
        color: var(--primary-color);
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        margin-bottom: 16px;
        font-size: 1.25rem;
    }
    .card-title {
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 10px;
    }
    .card-text {
        color: var(--text-muted);
        font-size: 0.9rem;
        line-height: 1.6;
    }
    /* 展映卡片 */
    .vlog-showcase-card {
        background: #ffffff;
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-soft);
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .vlog-thumb {
        height: 170px;
        background: linear-gradient(135deg, #475569 0%, #1e293b 100%);
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
    }
    .vlog-thumb-badge {
        position: absolute;
        top: 12px;
        left: 12px;
        background: rgba(0, 0, 0, 0.65);
        backdrop-filter: blur(4px);
        padding: 4px 10px;
        border-radius: 6px;
        font-size: 0.75rem;
        color: #fff;
    }
    .vlog-thumb i.play-badge {
        font-size: 2.4rem;
        opacity: 0.9;
        transition: transform 0.3s ease;
    }
    .vlog-showcase-card:hover .play-badge {
        transform: scale(1.15);
        color: var(--secondary-color);
    }
    .vlog-body {
        padding: 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .vlog-meta {
        font-size: 0.8rem;
        color: var(--text-muted);
        margin-bottom: 8px;
        display: flex;
        justify-content: space-between;
    }
    .vlog-title {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text-main);
    }
    .vlog-desc {
        font-size: 0.88rem;
        color: var(--text-muted);
        margin-bottom: 16px;
        flex: 1;
    }
    .vlog-footer-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-weight: 600;
        color: var(--primary-color);
        font-size: 0.88rem;
    }
    /* 指标与流程卡 */
    .metric-badge-box {
        background: #ffffff;
        border-radius: var(--radius-md);
        padding: 24px;
        border: 1px solid var(--border-color);
        text-align: center;
        box-shadow: var(--shadow-soft);
    }
    .metric-val {
        font-size: 2rem;
        font-weight: 800;
        background: var(--accent-gradient);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 4px;
    }
    .metric-name {
        font-size: 0.9rem;
        color: var(--text-muted);
    }
    .flow-step-item {
        background: #ffffff;
        border-radius: var(--radius-md);
        padding: 24px;
        border: 1px solid var(--border-color);
        position: relative;
        height: 100%;
    }
    .step-number {
        font-size: 1.8rem;
        font-weight: 900;
        color: rgba(99, 102, 241, 0.2);
        position: absolute;
        top: 14px;
        right: 18px;
    }
    /* 行动转化区 */
    .cta-banner {
        background: linear-gradient(135deg, #1e1b4b 0%, #311042 100%);
        border-radius: var(--radius-lg);
        padding: 50px 40px;
        color: #ffffff;
        text-align: center;
    }
    .btn-main {
        background: var(--accent-gradient);
        color: #fff;
        font-weight: 600;
        padding: 12px 28px;
        border-radius: 50px;
        display: inline-block;
        box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    }
    .btn-main:hover {
        box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
        color: #fff;
    }
    /* 页脚 */
    .site-footer {
        background: #0b0f19;
        color: #94a3b8;
        padding: 60px 0 25px;
        border-top: 1px solid #1e293b;
    }
    .footer-brand {
        font-size: 1.25rem;
        font-weight: 800;
        color: #ffffff;
        display: block;
        margin-bottom: 12px;
    }
    .footer-links-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .footer-links-list li {
        margin-bottom: 10px;
    }
    .footer-links-list a:hover {
        color: var(--primary-color);
    }
    .footer-bottom {
        margin-top: 40px;
        padding-top: 20px;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        font-size: 0.85rem;
        text-align: center;
    }
    @media (max-width: 768px) {
        .header-inner {
            flex-direction: column;
            gap: 12px;
        }
        .nav-links {
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }
    }