/* roulang page: index */
/* ===== 设计变量 ===== */
  :root {
    --primary: #0d2a5f;
    --primary-dark: #081b3e;
    --primary-light: #1d3f7a;
    --secondary: #c9a15a;
    --secondary-light: #e2c489;
    --success: #1ba37a;
    --bg-light: #f4f6fb;
    --bg-white: #ffffff;
    --bg-dark: #0b1526;
    --text-dark: #18243f;
    --text-body: #45536c;
    --text-muted: #7a879c;
    --border-light: #e7ebf3;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 10px rgba(13, 42, 95, .06);
    --shadow-md: 0 12px 32px rgba(13, 42, 95, .10);
    --shadow-lg: 0 24px 60px rgba(13, 42, 95, .16);
    --transition: .25s ease;
  }

  /* ===== 基础 Reset ===== */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    background: var(--bg-white);
    color: var(--text-body);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }

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

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

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

  button,
  input {
    font-family: inherit;
  }

  .container {
    max-width: 1200px;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ===== 顶部信息条 ===== */
  .topbar {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, .85);
    font-size: 13px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
  }

  .topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
  }

  .topbar-left {
    display: flex;
    align-items: center;
    gap: 22px;
  }

  .topbar-left span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .topbar-left i {
    color: var(--secondary);
    font-size: 12px;
  }

  .topbar-right a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-light);
    font-weight: 600;
    background: rgba(255, 255, 255, .06);
    border-radius: 20px;
    padding: 4px 16px;
    transition: background var(--transition), color var(--transition);
  }

  .topbar-right a:hover {
    background: rgba(255, 255, 255, .14);
    color: #fff;
  }

  /* ===== 主导航 ===== */
  .main-header {
    background: var(--bg-white);
    box-shadow: 0 4px 24px rgba(13, 42, 95, .07);
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  .navbar-brand.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: 1px;
  }

  .brand-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-light);
    font-size: 1.1rem;
    box-shadow: 0 6px 16px rgba(13, 42, 95, .2);
  }

  .main-menu {
    gap: 6px;
  }

  .main-menu .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    padding: 10px 18px;
    border-radius: 10px;
    position: relative;
    transition: color var(--transition), background var(--transition);
  }

  .main-menu .nav-link:hover {
    color: var(--primary);
    background: rgba(13, 42, 95, .05);
  }

  .main-menu .nav-link.active {
    color: var(--primary);
    font-weight: 700;
    background: rgba(13, 42, 95, .07);
  }

  .main-menu .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 22px;
    height: 3px;
    background: var(--secondary);
    border-radius: 4px;
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: linear-gradient(135deg, var(--secondary), #b58a3c);
    color: #fff;
    font-weight: 600;
    border-radius: 30px;
    box-shadow: 0 6px 18px rgba(201, 161, 90, .35);
    transition: transform var(--transition), box-shadow var(--transition);
  }

  .nav-cta:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 10px 28px rgba(201, 161, 90, .45);
  }

  .navbar-toggler {
    border: none;
    font-size: 1.4rem;
    color: var(--primary);
    padding: 6px 10px;
  }

  .navbar-toggler:focus {
    box-shadow: none;
  }

  /* ===== Hero ===== */
  .hero {
    position: relative;
    min-height: 86vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: var(--primary-dark);
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center top;
    opacity: .55;
    z-index: 1;
  }

  .hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(8, 27, 62, .92) 0%, rgba(13, 42, 95, .72) 50%, rgba(8, 27, 62, .88) 100%);
    z-index: 2;
  }

  .hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 150px;
    background: linear-gradient(180deg, transparent, rgba(8, 27, 62, .55));
    z-index: 2;
  }

  .hero-content {
    position: relative;
    z-index: 3;
    padding: 100px 24px 70px;
    max-width: 900px;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .1);
    border: 1px solid rgba(255, 255, 255, .2);
    color: var(--secondary-light);
    font-size: 14px;
    font-weight: 600;
    padding: 8px 22px;
    border-radius: 40px;
    margin-bottom: 28px;
    backdrop-filter: blur(6px);
    letter-spacing: 2px;
    text-transform: uppercase;
  }

  .hero-content h1 {
    font-size: 3.6rem;
    line-height: 1.2;
    font-weight: 800;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 20px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, .3);
  }

  .hero-content .lead {
    font-size: 1.16rem;
    color: rgba(255, 255, 255, .85);
    max-width: 720px;
    margin: 0 auto 34px;
    line-height: 1.8;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 30px;
  }

  .btn-main {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    background: linear-gradient(135deg, var(--secondary), #b58a3c);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    border-radius: 40px;
    border: none;
    box-shadow: 0 10px 30px rgba(201, 161, 90, .4);
    transition: transform var(--transition), box-shadow var(--transition);
  }

  .btn-main:hover {
    transform: translateY(-3px);
    color: #fff;
    box-shadow: 0 16px 40px rgba(201, 161, 90, .5);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 30px;
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, .4);
    color: #fff;
    font-weight: 600;
    border-radius: 40px;
    font-size: 1rem;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
  }

  .btn-ghost:hover {
    background: rgba(255, 255, 255, .1);
    border-color: #fff;
    color: #fff;
    transform: translateY(-3px);
  }

  .hero-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    color: rgba(255, 255, 255, .8);
    font-size: 14px;
  }

  .hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .hero-meta i {
    color: var(--secondary);
  }

  /* ===== 数据条 ===== */
  .stats-section {
    background: var(--bg-white);
    margin-top: -60px;
    position: relative;
    z-index: 5;
  }

  .stats-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 36px 24px;
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
  }

  .stats-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
    opacity: .7;
  }

  .stats-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 48px rgba(13, 42, 95, .14);
  }

  .stat-num {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 6px;
  }

  .stat-num small {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-left: 2px;
  }

  .stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
  }

  /* ===== 板块通用 ===== */
  .section-padding {
    padding: 88px 0;
  }

  .section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
  }

  .section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--secondary);
    margin-bottom: 14px;
  }

  .section-header h2 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.3;
  }

  .section-header p {
    font-size: 1.02rem;
    color: var(--text-muted);
    line-height: 1.8;
  }

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

  .bg-dark-section {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, .8);
  }

  .bg-dark-section .section-header h2 {
    color: #fff;
  }

  .bg-dark-section .section-header p {
    color: rgba(255, 255, 255, .6);
  }

  /* ===== 核心说明 ===== */
  .about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .about-text .section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--secondary);
    margin-bottom: 14px;
  }

  .about-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 20px;
  }

  .about-text p {
    color: var(--text-muted);
    line-height: 1.9;
    margin-bottom: 16px;
  }

  .about-points {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 24px;
  }

  .about-point {
    display: flex;
    align-items: flex-start;
    gap: 14px;
  }

  .about-point-icon {
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-light);
    font-size: 15px;
    box-shadow: 0 6px 16px rgba(13, 42, 95, .18);
  }

  .about-point h5 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
  }

  .about-point p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 0;
    line-height: 1.7;
  }

  .about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
  }

  .about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: transform .5s ease;
  }

  .about-image:hover img {
    transform: scale(1.03);
  }

  .about-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(8, 27, 62, .4));
  }

  .about-image .img-caption {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 2;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    background: rgba(8, 27, 62, .6);
    padding: 6px 16px;
    border-radius: 30px;
    backdrop-filter: blur(6px);
  }

  /* ===== 分类卡片 ===== */
  .category-card {
    display: block;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    height: 320px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    background: var(--primary-dark);
  }

  .category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
  }

  .category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: .7;
    transition: transform .6s ease, opacity var(--transition);
  }

  .category-card:hover img {
    transform: scale(1.05);
    opacity: .5;
  }

  .cat-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 35%, rgba(8, 27, 62, .85));
    z-index: 2;
  }

  .cat-content {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 24px;
    z-index: 3;
  }

  .cat-tag {
    display: inline-block;
    background: var(--secondary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 12px;
    letter-spacing: 1px;
  }

  .cat-content h3 {
    color: #fff;
    font-size: 1.45rem;
    font-weight: 700;
    margin-bottom: 6px;
  }

  .cat-content p {
    color: rgba(255, 255, 255, .8);
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .cat-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-light);
    font-size: 14px;
    font-weight: 600;
  }

  .category-card:hover .cat-link i {
    transform: translateX(4px);
  }

  .cat-link i {
    transition: transform var(--transition);
  }

  /* ===== 注册流程 ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
  }

  .step-item {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: transform var(--transition), box-shadow var(--transition);
  }

  .step-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
  }

  .step-num {
    width: 64px;
    height: 64px;
    margin: 0 auto 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    box-shadow: 0 8px 24px rgba(13, 42, 95, .25);
  }

  .step-item h4 {
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
  }

  .step-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0;
  }

  /* ===== 平台特色 + 横向滚区 ===== */
  .feature-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
  }

  .feature-text .section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--secondary);
    margin-bottom: 14px;
  }

  .feature-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 14px;
    line-height: 1.3;
  }

  .feature-text p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
  }

  .feature-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .feature-list-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--secondary);
    transition: background var(--transition), transform var(--transition);
  }

  .feature-list-item:hover {
    background: #fff;
    transform: translateX(6px);
    box-shadow: var(--shadow-sm);
  }

  .feature-list-item i {
    color: var(--secondary);
    font-size: 1.1rem;
    margin-top: 3px;
  }

  .feature-list-item h6 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2px;
  }

  .feature-list-item p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 0;
    line-height: 1.6;
  }

  .feature-scroll {
    margin-top: 48px;
    overflow: hidden;
  }

  .feature-scroll-track {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .feature-scroll-track::-webkit-scrollbar {
    height: 6px;
  }

  .feature-scroll-track::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, .1);
    border-radius: 10px;
  }

  .feature-scroll-track::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, .3);
    border-radius: 10px;
  }

  .feature-slide {
    flex: 0 0 260px;
    scroll-snap-align: start;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    height: 180px;
  }

  .feature-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
  }

  .feature-slide:hover img {
    transform: scale(1.06);
  }

  .feature-slide::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(8, 27, 62, .65));
  }

  .feature-slide span {
    position: absolute;
    bottom: 12px;
    left: 14px;
    z-index: 2;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    background: rgba(8, 27, 62, .55);
    padding: 4px 12px;
    border-radius: 20px;
    backdrop-filter: blur(4px);
  }

  /* ===== 最新资讯 ===== */
  .cms-card {
    display: block;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    height: 100%;
    transition: transform var(--transition), box-shadow var(--transition);
  }

  .cms-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
  }

  .cms-card-body {
    padding: 24px;
  }

  .cms-category {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--secondary);
    background: rgba(201, 161, 90, .1);
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 14px;
  }

  .cms-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .cms-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .cms-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border-light);
    padding-top: 14px;
  }

  .cms-card-meta i {
    color: var(--secondary);
    margin-right: 4px;
  }

  .empty-cms {
    text-align: center;
    padding: 48px 24px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-light);
    color: var(--text-muted);
    font-size: 15px;
  }

  /* ===== FAQ ===== */
  .faq-section {
    background: var(--bg-light);
  }

  .faq-wrap {
    max-width: 840px;
    margin: 0 auto;
  }

  .accordion-item {
    background: var(--bg-white);
    border: 1px solid var(--border-light) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
  }

  .accordion-button {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    background: var(--bg-white);
    padding: 20px 24px;
    border: none;
  }

  .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: rgba(13, 42, 95, .02);
    box-shadow: none;
  }

  .accordion-button:focus {
    box-shadow: none;
    border-color: transparent;
  }

  .accordion-button::after {
    background-image: none;
    font-family: "Font Awesome 5 Free";
    content: '\f078';
    font-weight: 900;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    font-size: 14px;
    transition: transform var(--transition);
  }

  .accordion-button:not(.collapsed)::after {
    transform: rotate(180deg);
    background-image: none;
  }

  .accordion-body {
    padding: 4px 24px 24px;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
  }

  /* ===== CTA ===== */
  .cta-section {
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
    padding: 80px 0;
  }

  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    opacity: .2;
  }

  .cta-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(8, 27, 62, .92), rgba(13, 42, 95, .78));
  }

  .cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
  }

  .cta-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
  }

  .cta-content p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, .75);
    line-height: 1.8;
    margin-bottom: 30px;
  }

  .cta-content .btn-main {
    font-size: 1.05rem;
  }

  /* ===== 页脚 ===== */
  .footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, .65);
    padding: 60px 0 24px;
    border-top: 1px solid rgba(255, 255, 255, .06);
  }

  .footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
  }

  .footer-brand .brand-icon {
    width: 40px;
    height: 40px;
  }

  .footer-brand .brand-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
  }

  .footer-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, .5);
    line-height: 1.8;
    max-width: 320px;
    margin-bottom: 24px;
  }

  .footer h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
  }

  .footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-links a {
    color: rgba(255, 255, 255, .55);
    font-size: 14px;
    transition: color var(--transition), padding-left var(--transition);
  }

  .footer-links a:hover {
    color: var(--secondary-light);
    padding-left: 6px;
  }

  .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 14px;
  }

  .footer-contact div {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, .55);
  }

  .footer-contact i {
    color: var(--secondary);
    width: 16px;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    margin-top: 44px;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255, 255, 255, .4);
  }

  .footer-bottom a {
    color: rgba(255, 255, 255, .45);
  }

  .footer-bottom a:hover {
    color: var(--secondary-light);
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .hero-content h1 {
      font-size: 2.8rem;
    }

    .steps-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .about-content,
    .feature-wrap {
      grid-template-columns: 1fr;
      gap: 32px;
    }

    .about-image img {
      height: 320px;
    }
  }

  @media (max-width: 768px) {
    .section-padding {
      padding: 60px 0;
    }

    .section-header {
      margin-bottom: 36px;
    }

    .section-header h2 {
      font-size: 1.8rem;
    }

    .hero {
      min-height: 75vh;
    }

    .hero-content {
      padding: 80px 20px 60px;
    }

    .hero-content h1 {
      font-size: 2.1rem;
      letter-spacing: 1px;
    }

    .hero-content .lead {
      font-size: 1rem;
    }

    .hero-actions {
      flex-direction: column;
      align-items: center;
    }

    .btn-main,
    .btn-ghost {
      width: 100%;
      justify-content: center;
    }

    .stats-section {
      margin-top: -40px;
    }

    .stats-card {
      padding: 24px 16px;
    }

    .stat-num {
      font-size: 1.8rem;
    }

    .steps-grid {
      grid-template-columns: 1fr;
    }

    .category-card {
      height: 260px;
    }

    .footer-bottom {
      flex-direction: column;
      justify-content: center;
      text-align: center;
    }

    .topbar-inner {
      justify-content: center;
      text-align: center;
    }

    .topbar-left {
      flex-direction: column;
      gap: 4px;
    }

    .topbar-right a {
      font-size: 12px;
    }
  }

  @media (max-width: 520px) {
    .hero-content h1 {
      font-size: 1.7rem;
    }

    .section-header h2 {
      font-size: 1.5rem;
    }

    .about-image img {
      height: 220px;
    }

    .feature-slide {
      flex: 0 0 200px;
      height: 140px;
    }

    .cms-card h3 {
      font-size: 1rem;
    }

    .accordion-button {
      font-size: 14px;
      padding: 16px 18px;
    }

    .accordion-body {
      padding: 0 18px 18px;
      font-size: 14px;
    }

    .footer {
      padding-top: 40px;
    }
  }

/* roulang page: category1 */
:root {
            --primary: #0F2B46;
            --primary-light: #16456B;
            --primary-lighter: #2E7DB5;
            --accent: #C9A063;
            --accent-light: #E5C992;
            --accent-dark: #A88445;
            --bg-body: #F6F4F0;
            --bg-white: #FFFFFF;
            --bg-dark: #0B1C2D;
            --bg-soft: #F0EDE6;
            --text-main: #173042;
            --text-muted: #5E7486;
            --border-color: #E3DED5;
            --border-dark: rgba(255, 255, 255, .14);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 4px 16px rgba(15, 43, 70, .06);
            --shadow-md: 0 12px 32px rgba(15, 43, 70, .09);
            --shadow-lg: 0 24px 60px rgba(15, 43, 70, .14);
            --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: 1200px;
        }

        /* 顶部导航 */
        .main-header {
            background: rgba(255, 255, 255, .98);
            border-bottom: 1px solid rgba(15, 43, 70, .06);
            box-shadow: 0 4px 24px rgba(15, 43, 70, .04);
            position: sticky;
            top: 0;
            z-index: 1040;
            backdrop-filter: blur(12px);
        }

        .main-header .navbar {
            padding: 14px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-lighter));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            box-shadow: 0 4px 14px rgba(15, 43, 70, .25);
        }

        .brand-name {
            font-size: 19px;
            color: var(--primary);
            letter-spacing: .5px;
        }

        .main-menu {
            gap: 6px;
        }

        .main-menu .nav-link {
            color: var(--text-main);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 16px !important;
            border-radius: 10px;
            position: relative;
            transition: var(--transition);
        }

        .main-menu .nav-link:hover {
            background: rgba(15, 43, 70, .05);
            color: var(--primary);
        }

        .main-menu .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .main-menu .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff !important;
            padding: 10px 22px !important;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 4px 16px rgba(15, 43, 70, .22);
            transition: var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 43, 70, .28);
            color: #fff !important;
        }

        .navbar-toggler {
            border: none;
            font-size: 22px;
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(15, 43, 70, .12);
        }

        /* 分类页 Hero */
        .category-hero {
            position: relative;
            background-image: linear-gradient(rgba(11, 28, 45, .82), rgba(11, 28, 45, .55)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 110px 0 80px;
            color: #fff;
            overflow: hidden;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(180deg, transparent, rgba(11, 28, 45, .35));
            pointer-events: none;
        }

        .category-hero .hero-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 160, 99, .18);
            border: 1px solid rgba(201, 160, 99, .4);
            color: var(--accent-light);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: .5px;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin: 22px 0 16px;
            letter-spacing: 1px;
        }

        .category-hero .hero-subtitle {
            font-size: 17px;
            color: rgba(255, 255, 255, .86);
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            padding: 12px 28px;
            border-radius: 12px;
            font-weight: 600;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(201, 160, 99, .3);
        }

        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(201, 160, 99, .38);
            color: #fff;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .4);
            color: #fff;
            padding: 12px 28px;
            border-radius: 12px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 560px;
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, .16);
        }

        .hero-stats .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent-light);
        }

        .hero-stats .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
        }

        /* 面包屑 */
        .crumb-bar {
            padding: 14px 0;
            background: transparent;
            font-size: 14px;
            color: var(--text-muted);
        }

        .crumb-bar a {
            color: var(--primary-lighter);
        }

        /* 板块通用 */
        .section {
            padding: 80px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-desc {
            color: var(--text-muted);
            max-width: 660px;
            margin-bottom: 40px;
            font-size: 16px;
        }

        /* 注册流程 */
        .process-section {
            background: var(--bg-white);
        }

        .process-card {
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            height: 100%;
            position: relative;
            transition: var(--transition);
        }

        .process-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(201, 160, 99, .3);
            background: #fff;
        }

        .process-number {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            opacity: .35;
            line-height: 1;
            margin-bottom: 14px;
            font-style: italic;
        }

        .process-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .process-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
            line-height: 1.7;
        }

        .process-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-lighter));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 18px;
            box-shadow: 0 4px 14px rgba(15, 43, 70, .2);
        }

        /* 资料准备 */
        .materials-section {
            background: var(--bg-body);
        }

        .materials-wrapper {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            padding: 36px;
            height: 100%;
        }

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

        .materials-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid #f0ece5;
        }

        .materials-list li:last-child {
            border-bottom: none;
        }

        .materials-list .m-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            border-radius: 10px;
            background: rgba(15, 43, 70, .07);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
        }

        .materials-list h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 2px;
        }

        .materials-list p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .tips-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-lg);
            padding: 32px;
            color: #fff;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .tips-card::after {
            content: "";
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            background: rgba(201, 160, 99, .2);
            border-radius: 50%;
        }

        .tips-card h3 {
            font-size: 20px;
            font-weight: 700;
            position: relative;
            z-index: 1;
            margin-bottom: 16px;
        }

        .tips-card ul {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            position: relative;
            z-index: 1;
        }

        .tips-card ul li {
            padding: 6px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, .88);
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }

        .tips-card ul li i {
            color: var(--accent-light);
            margin-top: 4px;
            font-size: 14px;
        }

        .tips-card .btn-ghost {
            align-self: flex-start;
            padding: 9px 20px;
            font-size: 14px;
            position: relative;
            z-index: 1;
        }

        /* 分类入口 */
        .category-section {
            background: var(--bg-white);
        }

        .cat-card {
            background: var(--bg-body);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 30px 26px;
            height: 100%;
            transition: var(--transition);
            display: block;
            position: relative;
            overflow: hidden;
        }

        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            background: #fff;
            border-color: rgba(201, 160, 99, .35);
        }

        .cat-card .cat-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
        }

        .cat-icon.cat-1 {
            background: linear-gradient(135deg, #C9A063, #E5C992);
        }
        .cat-icon.cat-2 {
            background: linear-gradient(135deg, #16456B, #2E7DB5);
        }
        .cat-icon.cat-3 {
            background: linear-gradient(135deg, #0B1C2D, #214E6E);
        }

        .cat-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .cat-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .cat-card .cat-more {
            font-size: 14px;
            color: var(--primary-lighter);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .cat-card:hover .cat-more {
            gap: 10px;
            color: var(--accent-dark);
        }

        /* 文章列表 */
        .articles-section {
            background: var(--bg-soft);
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            height: 100%;
            transition: var(--transition);
            display: block;
        }

        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .article-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .article-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 28, 45, .35));
            opacity: 0;
            transition: var(--transition);
        }

        .article-card:hover .card-img::after {
            opacity: 1;
        }

        .article-card .card-body {
            padding: 22px;
        }

        .article-card .card-tag {
            display: inline-block;
            background: rgba(15, 43, 70, .07);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        .article-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .article-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 14px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-meta {
            font-size: 13px;
            color: #9aa8b4;
            display: flex;
            gap: 14px;
        }

        .article-card .card-meta i {
            font-size: 13px;
            margin-right: 4px;
        }

        /* 数据条 */
        .stats-band {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            padding: 60px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: rgba(201, 160, 99, .1);
            border-radius: 50%;
        }

        .stats-band::after {
            content: "";
            position: absolute;
            bottom: -70px;
            left: -70px;
            width: 220px;
            height: 220px;
            background: rgba(255, 255, 255, .03);
            border-radius: 50%;
        }

        .stats-band .container {
            position: relative;
            z-index: 1;
        }

        .stats-banner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .stats-item {
            text-align: center;
        }

        .stats-item .num {
            font-size: 38px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
        }

        .stats-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            margin-top: 6px;
        }

        .stats-item .divider-line {
            width: 28px;
            height: 2px;
            background: rgba(201, 160, 99, .5);
            margin: 10px auto 0;
            border-radius: 2px;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-item {
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(15, 43, 70, .2);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            color: var(--primary);
            font-size: 16px;
        }

        .faq-question .q-icon {
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(201, 160, 99, .15);
            color: var(--accent-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-question .q-toggle {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 14px;
            transition: var(--transition);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .q-toggle {
            transform: rotate(45deg);
            color: var(--accent-dark);
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0B1C2D, #16456B);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), transparent, var(--accent));
        }

        .cta-section .cta-title {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, .78);
            margin-bottom: 28px;
            max-width: 540px;
        }

        .cta-section .btn-main {
            font-size: 16px;
            padding: 14px 34px;
        }

        /* 页脚 */
        .footer {
            background: #0A1826;
            color: #a8b6c2;
            padding: 64px 0 0;
            font-size: 14px;
        }

        .footer .brand-name {
            color: #fff;
            font-size: 20px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-desc {
            color: #7d91a0;
            margin-bottom: 18px;
            line-height: 1.7;
            font-size: 14px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: #93a5b3;
        }

        .footer-contact i {
            width: 18px;
            color: var(--accent);
            margin-right: 6px;
        }

        .footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer h5::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #7d91a0;
            font-size: 14px;
            transition: var(--transition);
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        .footer-links .btn-main,
        .footer-links .btn-ghost {
            margin-bottom: 8px;
            width: fit-content;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 18px 0;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: #5f7484;
        }

        /* 响应式 */
        @media (max-width: 991px) {
            .main-menu {
                gap: 2px;
                padding: 14px 0;
            }

            .main-menu .nav-link {
                padding: 10px 14px !important;
            }

            .main-menu .nav-link.active::after {
                display: none;
            }

            .hero-stats-wrap {
                flex-wrap: wrap;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .stats-banner {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 50px 0;
            }

            .category-hero {
                padding: 90px 0 60px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .hero-subtitle {
                font-size: 15px !important;
            }

            .section-title {
                font-size: 24px;
            }

            .stats-banner {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .stats-item .num {
                font-size: 28px;
            }

            .materials-wrapper {
                padding: 24px;
            }

            .tips-card {
                padding: 26px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }

            .hero-stats .stat-num {
                font-size: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-buttons .btn-main,
            .hero-buttons .btn-ghost {
                justify-content: center;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .stats-banner {
                grid-template-columns: 1fr 1fr;
            }

            .cat-card {
                padding: 22px;
            }

            .article-card .card-meta {
                flex-direction: column;
                gap: 4px;
            }
        }

/* roulang page: article */
:root {
    --primary: #1a2332;
    --primary-light: #2d3a4a;
    --accent: #c9a962;
    --accent-dark: #b8954e;
    --accent-grad: linear-gradient(135deg, #d4a843 0%, #b8954e 100%);
    --bg: #f5f7fa;
    --bg-deep: #0f172a;
    --white: #ffffff;
    --text: #1e2a38;
    --text-light: #6b7a8a;
    --border: #e5eaf0;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.06);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.10);
    --shadow-lg: 0 20px 50px rgba(0,0,0,0.16);
    --transition: all 0.3s ease;
    --font-main: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { font-family: inherit; border: none; cursor: pointer; }
input, textarea { font-family: inherit; }
.container { max-width: 1280px; padding-left: 24px; padding-right: 24px; }
@media (max-width: 768px) {
    .container { padding-left: 16px; padding-right: 16px; }
}
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }

/* ---------- Header ---------- */
.main-header {
    position: sticky;
    top: 0;
    z-index: 1050;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.header-top-bar {
    background: var(--primary);
    color: rgba(255,255,255,0.75);
    font-size: 13px;
    padding: 8px 0;
}
.header-top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.header-top-left {
    display: flex;
    align-items: center;
    gap: 16px;
}
.header-top-right {
    display: flex;
    align-items: center;
    gap: 16px;
}
.header-top-right a {
    color: rgba(255,255,255,0.85);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}
.header-top-right a:hover { color: var(--accent); }
.navbar {
    padding: 14px 0;
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.brand-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-grad);
    border-radius: 10px;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 4px 14px rgba(201,169,98,0.35);
}
.brand-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
}
.navbar-toggler {
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--primary);
    padding: 8px 12px;
    background: var(--white);
    font-size: 16px;
}
.main-menu .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    padding: 8px 16px;
    border-radius: 8px;
    position: relative;
}
.main-menu .nav-link:hover {
    color: var(--accent-dark);
    background: rgba(201,169,98,0.08);
}
.main-menu .nav-link.active {
    color: var(--accent-dark);
    font-weight: 600;
}
.main-menu .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 16px;
    right: 16px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-grad);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: 50px;
    box-shadow: 0 4px 14px rgba(201,169,98,0.35);
    transition: var(--transition);
}
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(201,169,98,0.45);
    color: #fff;
}
@media (max-width: 991px) {
    .main-menu {
        padding-top: 16px;
        border-top: 1px solid var(--border);
    }
    .main-menu .nav-link { padding: 10px 12px; }
    .nav-cta { margin-left: 0 !important; margin-top: 8px; }
    .header-top-right span { display: none; }
}

/* ---------- Article Hero ---------- */
.article-hero {
    position: relative;
    padding: 80px 0 80px;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    border-radius: 0 0 32px 32px;
    overflow: hidden;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, rgba(15,23,42,0.88) 30%, rgba(15,23,42,0.55) 75%, rgba(15,23,42,0.35) 100%);
}
.article-hero .container {
    position: relative;
    z-index: 2;
    max-width: 960px;
    text-align: center;
}
.breadcrumb-wrap {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
}
.breadcrumb {
    background: rgba(255,255,255,0.12);
    border-radius: 50px;
    padding: 8px 20px;
    margin: 0;
    backdrop-filter: blur(6px);
}
.breadcrumb-item,
.breadcrumb-item a {
    color: rgba(255,255,255,0.75);
    font-size: 14px;
}
.breadcrumb-item.active { color: var(--accent); }
.breadcrumb-item a:hover { color: var(--accent); }
.breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255,255,255,0.4);
}
.article-hero-title {
    font-size: 38px;
    font-weight: 800;
    color: #fff;
    max-width: 720px;
    margin: 0 auto 20px;
    line-height: 1.3;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.article-meta {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
.meta-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.14);
    color: #fff;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 13px;
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.18);
}
.meta-badge i { color: var(--accent); }
@media (max-width: 768px) {
    .article-hero { padding: 50px 0; border-radius: 0 0 20px 20px; }
    .article-hero-title { font-size: 26px; }
}

/* ---------- Article Main ---------- */
.article-main-section {
    padding: 60px 0 40px;
    margin-top: -30px;
    position: relative;
    z-index: 5;
}
.article-main .container {
    max-width: 1280px;
}
.main-article-col .article-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 44px;
    border: 1px solid var(--border);
}
.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: #2d3a4a;
}
.article-body h2 {
    font-size: 26px;
    margin: 32px 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}
.article-body h3 {
    font-size: 21px;
    margin: 24px 0 12px;
}
.article-body p {
    margin-bottom: 16px;
}
.article-body ul,
.article-body ol {
    margin: 0 0 20px 24px;
    padding-left: 8px;
}
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
    background: rgba(201,169,98,0.08);
    border-left: 4px solid var(--accent);
    padding: 16px 24px;
    border-radius: 0 12px 12px 0;
    margin: 24px 0;
    color: var(--text-light);
    font-style: italic;
}
.article-body img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin: 24px 0;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    border-radius: 8px;
    overflow: hidden;
}
.article-body table th,
.article-body table td {
    border: 1px solid var(--border);
    padding: 12px 16px;
    text-align: left;
}
.article-body table th {
    background: rgba(201,169,98,0.12);
    font-weight: 600;
}
.article-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}
.article-tags .tag-label {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}
.tag-item {
    display: inline-flex;
    background: rgba(201,169,98,0.12);
    color: var(--accent-dark);
    font-size: 13px;
    padding: 4px 14px;
    border-radius: 30px;
    font-weight: 500;
}
.article-not-found {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 80px 40px;
    text-align: center;
}
.article-not-found i {
    font-size: 48px;
    color: var(--accent);
    margin-bottom: 20px;
    display: block;
}
.article-not-found h2 {
    font-size: 28px;
    margin-bottom: 12px;
}
.article-not-found p {
    color: var(--text-light);
    margin-bottom: 24px;
}
.btn-main {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-grad);
    color: #fff;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 50px;
    box-shadow: 0 4px 16px rgba(201,169,98,0.4);
    transition: var(--transition);
    border: none;
    font-size: 15px;
}
.btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(201,169,98,0.5);
    color: #fff;
}
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: var(--primary);
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 50px;
    border: 2px solid var(--border);
    transition: var(--transition);
    font-size: 15px;
}
.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent-dark);
    background: rgba(201,169,98,0.06);
}
@media (max-width: 768px) {
    .main-article-col .article-card { padding: 24px; }
    .article-body { font-size: 15px; }
}

/* ---------- Sidebar ---------- */
.sidebar-col {
    position: sticky;
    top: 100px;
    align-self: flex-start;
}
.sidebar-card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    padding: 28px;
    margin-bottom: 24px;
}
.sidebar-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
}
.sidebar-title i {
    color: var(--accent);
    font-size: 18px;
}
.sidebar-category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.sidebar-category-list li {
    border-bottom: 1px solid var(--border);
}
.sidebar-category-list li:last-child { border-bottom: none; }
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 8px;
    color: var(--text);
    font-size: 15px;
    border-radius: 8px;
    transition: var(--transition);
}
.sidebar-link i {
    color: var(--accent);
    width: 20px;
    text-align: center;
}
.sidebar-link:hover {
    background: rgba(201,169,98,0.08);
    color: var(--accent-dark);
    transform: translateX(4px);
}
.sidebar-contact-card {
    background: var(--bg-deep);
    border-radius: var(--radius-md);
    padding: 28px;
    color: rgba(255,255,255,0.85);
    text-align: center;
}
.sidebar-contact-card h4 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 8px;
}
.sidebar-contact-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
}
@media (max-width: 991px) {
    .sidebar-col { position: static; margin-top: 32px; }
}

/* ---------- Related Section ---------- */
.related-section {
    padding: 60px 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
}
.section-heading {
    text-align: center;
    margin-bottom: 48px;
}
.section-heading .sec-sub {
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.section-heading h2 {
    font-size: 34px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 12px;
}
.section-heading p {
    color: var(--text-light);
    font-size: 16px;
    max-width: 560px;
    margin: 0 auto;
}
.related-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.related-card-img {
    height: 180px;
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}
.related-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(15,23,42,0.55) 100%);
}
.related-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.related-card-body .cat {
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 8px;
}
.related-card-body h3 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 8px;
}
.related-card-body h3 a:hover { color: var(--accent-dark); }
.related-card-body p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
    flex: 1;
}
.related-card-link {
    color: var(--accent-dark);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.related-card-link i { transition: var(--transition); }
.related-card-link:hover i { transform: translateX(4px); }
@media (max-width: 991px) {
    .related-card { margin-bottom: 24px; }
}

/* ---------- Category Section ---------- */
.category-section {
    padding: 70px 0;
    background: var(--bg);
}
.category-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.category-card-img {
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.category-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(15,23,42,0.5) 100%);
}
.category-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.category-card-body h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}
.category-card-body p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.65;
    margin-bottom: 16px;
    flex: 1;
}
.category-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(201,169,98,0.12);
    color: var(--accent-dark);
    font-size: 13px;
    padding: 4px 14px;
    border-radius: 30px;
    margin-bottom: 12px;
    align-self: flex-start;
    font-weight: 500;
}
@media (max-width: 768px) {
    .category-card { margin-bottom: 24px; }
}

/* ---------- FAQ Section ---------- */
.faq-section {
    padding: 70px 0;
    background: var(--white);
}
.faq-accordion {
    max-width: 860px;
    margin: 0 auto;
}
.accordion-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md) !important;
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.accordion-button {
    background: var(--white);
    color: var(--primary);
    font-weight: 600;
    font-size: 16px;
    padding: 18px 24px;
    box-shadow: none;
}
.accordion-button:not(.collapsed) {
    background: rgba(201,169,98,0.08);
    color: var(--accent-dark);
    box-shadow: none;
}
.accordion-button:focus {
    box-shadow: 0 0 0 4px rgba(201,169,98,0.15);
    border-color: var(--accent);
}
.accordion-button::after {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23c9a962' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.accordion-body {
    padding: 20px 24px 24px;
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.75;
    border-top: 1px solid var(--border);
}
@media (max-width: 768px) {
    .accordion-button { font-size: 15px; padding: 16px 18px; }
}

/* ---------- CTA Section ---------- */
.cta-section {
    padding: 80px 0;
    background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(15,23,42,0.92) 30%, rgba(26,35,50,0.75) 100%);
}
.cta-section .container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 760px;
}
.cta-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(201,169,98,0.25);
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
    letter-spacing: 1px;
    border: 1px solid rgba(201,169,98,0.4);
}
.cta-section h2 {
    font-size: 38px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}
.cta-section p {
    color: rgba(255,255,255,0.8);
    font-size: 17px;
    margin-bottom: 36px;
    line-height: 1.7;
}
.cta-btns {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.cta-btns .btn-main {
    padding: 14px 36px;
    font-size: 16px;
}
.cta-btns .btn-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(8px);
    color: #fff;
    font-weight: 600;
    padding: 14px 36px;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.35);
    transition: var(--transition);
    font-size: 16px;
}
.cta-btns .btn-white:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}
.cta-note {
    margin-top: 28px;
    color: rgba(255,255,255,0.5);
    font-size: 13px;
}
.cta-note i { color: var(--accent); }
@media (max-width: 768px) {
    .cta-section { padding: 50px 0; }
    .cta-section h2 { font-size: 28px; }
}

/* ---------- Footer ---------- */
.footer {
    background: var(--bg-deep);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}
.footer .brand-icon {
    width: 38px;
    height: 38px;
    font-size: 16px;
}
.footer .brand-name {
    color: #fff;
    font-size: 18px;
}
.footer-desc {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    line-height: 1.7;
    margin: 16px 0 20px;
}
.footer-contact div {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
}
.footer-contact i { color: var(--accent); width: 18px; }
.footer h5 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}
.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-links a.btn-main,
.footer-links a.btn-ghost {
    margin-bottom: 8px;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    margin-top: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}
@media (max-width: 768px) {
    .footer { padding: 40px 0 0; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category2 */
:root {
        --primary: #2563eb;
        --primary-dark: #1e40af;
        --primary-light: #3b82f6;
        --accent: #06b6d4;
        --bg-light: #f8fafc;
        --bg-white: #ffffff;
        --bg-dark: #0b1a33;
        --text-main: #1e293b;
        --text-muted: #64748b;
        --text-weak: #94a3b8;
        --border: #e2e8f0;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow: 0 10px 30px rgba(0, 0, 0, .08);
        --shadow-hover: 0 16px 40px rgba(37, 99, 235, .15);
        --transition: all .3s ease;
    }
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        font-size: 16px;
        line-height: 1.75;
        color: var(--text-main);
        background: var(--bg-white);
        overflow-x: hidden;
    }
    a {
        text-decoration: none;
        color: var(--primary);
        transition: var(--transition);
    }
    a:hover {
        color: var(--primary-dark);
    }
    img {
        max-width: 100%;
        display: block;
    }
    ul,
    ol {
        padding-left: 0;
        list-style: none;
    }
    .btn-main {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: var(--primary);
        color: #fff !important;
        border: none;
        border-radius: 12px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        transition: var(--transition);
        box-shadow: 0 4px 14px rgba(37, 99, 235, .25);
        cursor: pointer;
    }
    .btn-main:hover {
        background: var(--primary-dark);
        box-shadow: var(--shadow-hover);
        transform: translateY(-2px);
        color: #fff;
    }
    .btn-ghost {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: transparent;
        color: var(--primary);
        border: 1.5px solid var(--primary);
        border-radius: 12px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        transition: var(--transition);
        cursor: pointer;
    }
    .btn-ghost:hover {
        background: rgba(37, 99, 235, .08);
        border-color: var(--primary-dark);
        color: var(--primary-dark);
        transform: translateY(-2px);
    }
    .btn-light {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: #fff;
        color: var(--primary) !important;
        border: none;
        border-radius: 12px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        transition: var(--transition);
        box-shadow: 0 4px 16px rgba(255, 255, 255, .2);
    }
    .btn-light:hover {
        background: #f1f5f9;
        transform: translateY(-2px);
    }
    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(37, 99, 235, .08);
        color: var(--primary);
        padding: 6px 16px;
        border-radius: 30px;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: .5px;
    }
    .section-title {
        font-size: clamp(28px, 4vw, 40px);
        font-weight: 800;
        line-height: 1.25;
        margin: 12px 0;
        color: var(--text-main);
        letter-spacing: -1px;
    }
    .section-sub {
        font-size: 16px;
        color: var(--text-muted);
        max-width: 680px;
        margin: 0 auto;
        line-height: 1.8;
    }
    /* top bar */
    .top-bar {
        background: var(--bg-dark);
        color: rgba(255, 255, 255, .85);
        font-size: 13px;
        padding: 8px 0;
        border-bottom: 1px solid rgba(255, 255, 255, .08);
    }
    .top-bar .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 4px 16px;
    }
    .top-bar i {
        margin-right: 6px;
        color: var(--accent);
    }
    .top-bar .top-right {
        display: flex;
        align-items: center;
        gap: 18px;
    }
    .top-bar a {
        color: rgba(255, 255, 255, .8);
    }
    .top-bar a:hover {
        color: #fff;
    }
    /* main header */
    .main-header {
        background: rgba(255, 255, 255, .95);
        backdrop-filter: blur(12px);
        position: sticky;
        top: 0;
        z-index: 1080;
        box-shadow: 0 2px 20px rgba(0, 0, 0, .06);
        border-bottom: 1px solid rgba(226, 232, 240, .7);
    }
    .main-header .navbar {
        padding: 12px 0;
    }
    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
    }
    .brand-icon {
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 12px;
        color: #fff;
        font-size: 18px;
        box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
    }
    .brand-name {
        font-size: 20px;
        color: var(--text-main);
        letter-spacing: .5px;
    }
    .main-menu .nav-link {
        color: var(--text-main);
        font-weight: 500;
        padding: 8px 16px !important;
        border-radius: 8px;
        transition: var(--transition);
        font-size: 15px;
    }
    .main-menu .nav-link:hover {
        color: var(--primary);
        background: rgba(37, 99, 235, .06);
    }
    .main-menu .nav-link.active {
        color: var(--primary);
        background: rgba(37, 99, 235, .08);
        font-weight: 600;
    }
    .nav-cta {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--primary);
        color: #fff;
        padding: 10px 22px;
        border-radius: 12px;
        font-weight: 600;
        font-size: 14px;
        transition: var(--transition);
        box-shadow: 0 4px 14px rgba(37, 99, 235, .25);
    }
    .nav-cta:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        color: #fff;
    }
    .navbar-toggler {
        border: none;
        background: rgba(37, 99, 235, .1);
        border-radius: 10px;
        padding: 10px 14px;
        color: var(--primary);
        font-size: 18px;
        box-shadow: none;
    }
    .navbar-toggler:focus {
        box-shadow: none;
        outline: 2px solid var(--primary);
    }
    /* page hero */
    .page-hero {
        background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 55%, #1e40af 100%);
        padding: 90px 0 80px;
        position: relative;
        overflow: hidden;
    }
    .page-hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        opacity: .12;
        z-index: 0;
    }
    .page-hero::after {
        content: '';
        position: absolute;
        bottom: -60px;
        right: -80px;
        width: 400px;
        height: 400px;
        background: radial-gradient(circle, rgba(6, 182, 212, .25), transparent 70%);
        z-index: 0;
    }
    .page-hero .container {
        position: relative;
        z-index: 2;
    }
    .page-hero .section-tag {
        background: rgba(255, 255, 255, .12);
        color: #fff;
        border: 1px solid rgba(255, 255, 255, .2);
        backdrop-filter: blur(6px);
    }
    .page-hero h1 {
        font-size: clamp(32px, 5vw, 52px);
        font-weight: 800;
        color: #fff;
        line-height: 1.2;
        margin: 16px 0;
        letter-spacing: -1px;
    }
    .page-hero p {
        color: rgba(255, 255, 255, .85);
        font-size: 18px;
        max-width: 700px;
        margin: 0 auto;
        line-height: 1.8;
    }
    .hero-stats {
        margin-top: 36px;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 30px;
    }
    .hero-stat-item {
        text-align: center;
        padding: 16px 28px;
        background: rgba(255, 255, 255, .08);
        border: 1px solid rgba(255, 255, 255, .15);
        border-radius: var(--radius);
        backdrop-filter: blur(8px);
        min-width: 130px;
    }
    .hero-stat-item .num {
        font-size: 30px;
        font-weight: 800;
        color: #fff;
        display: block;
    }
    .hero-stat-item .label {
        font-size: 13px;
        color: rgba(255, 255, 255, .7);
        margin-top: 2px;
    }
    /* section spacing */
    .section {
        padding: 80px 0;
    }
    .section-bg {
        background: var(--bg-light);
    }
    .section-head {
        text-align: center;
        margin-bottom: 48px;
    }
    /* service cards */
    .service-card {
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 32px 28px;
        height: 100%;
        transition: var(--transition);
        position: relative;
        overflow: hidden;
    }
    .service-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 0;
        background: var(--primary);
        transition: var(--transition);
        border-radius: 0 0 4px 4px;
    }
    .service-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-8px);
        border-color: rgba(37, 99, 235, .3);
    }
    .service-card:hover::before {
        height: 100%;
    }
    .service-icon {
        width: 56px;
        height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, rgba(37, 99, 235, .12), rgba(6, 182, 212, .12));
        border-radius: 14px;
        font-size: 22px;
        color: var(--primary);
        margin-bottom: 18px;
        transition: var(--transition);
    }
    .service-card:hover .service-icon {
        background: var(--primary);
        color: #fff;
        transform: scale(1.05);
    }
    .service-card h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text-main);
    }
    .service-card p {
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.7;
        margin-bottom: 0;
    }
    .service-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        font-weight: 600;
        margin-top: 14px;
        color: var(--primary);
    }
    .service-link i {
        transition: var(--transition);
        font-size: 12px;
    }
    .service-card:hover .service-link i {
        transform: translateX(4px);
    }
    /* feature split */
    .feature-grid {
        display: flex;
        flex-wrap: wrap;
        row-gap: 32px;
    }
    .feature-item {
        padding: 8px;
    }
    .feature-image {
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow);
        position: relative;
    }
    .feature-image img {
        width: 100%;
        height: 260px;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .feature-image:hover img {
        transform: scale(1.04);
    }
    .feature-badge {
        position: absolute;
        top: 14px;
        left: 14px;
        background: rgba(255, 255, 255, .92);
        color: var(--primary);
        padding: 4px 14px;
        border-radius: 30px;
        font-size: 12px;
        font-weight: 700;
        backdrop-filter: blur(8px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
    }
    .feature-text {
        padding: 10px 8px;
    }
    .feature-text h3 {
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 10px;
    }
    .feature-text p {
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.75;
    }
    .feature-list {
        margin-top: 14px;
    }
    .feature-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        padding: 6px 0;
        color: var(--text-main);
        font-size: 15px;
    }
    .feature-list li i {
        color: var(--primary);
        margin-top: 5px;
        font-size: 14px;
    }
    /* steps */
    .step-section {
        background: var(--bg-dark);
        position: relative;
        overflow: hidden;
    }
    .step-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        opacity: .08;
        z-index: 0;
    }
    .step-section .container {
        position: relative;
        z-index: 2;
    }
    .step-section .section-title {
        color: #fff;
    }
    .step-section .section-sub {
        color: rgba(255, 255, 255, .7);
    }
    .step-card {
        text-align: center;
        padding: 32px 20px;
        background: rgba(255, 255, 255, .06);
        border: 1px solid rgba(255, 255, 255, .1);
        border-radius: var(--radius);
        backdrop-filter: blur(8px);
        height: 100%;
        transition: var(--transition);
    }
    .step-card:hover {
        background: rgba(255, 255, 255, .1);
        transform: translateY(-6px);
        border-color: rgba(59, 130, 246, .4);
    }
    .step-num {
        width: 52px;
        height: 52px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: #fff;
        font-size: 20px;
        font-weight: 800;
        margin: 0 auto 16px;
        box-shadow: 0 8px 20px rgba(37, 99, 235, .35);
    }
    .step-card h4 {
        color: #fff;
        font-size: 17px;
        font-weight: 600;
        margin-bottom: 10px;
    }
    .step-card p {
        color: rgba(255, 255, 255, .65);
        font-size: 14px;
        line-height: 1.65;
    }
    /* data section */
    .data-card {
        text-align: center;
        padding: 28px 24px;
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        transition: var(--transition);
        height: 100%;
    }
    .data-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-6px);
    }
    .data-icon {
        font-size: 32px;
        color: var(--primary);
        margin-bottom: 10px;
    }
    .data-num {
        font-size: 36px;
        font-weight: 800;
        color: var(--text-main);
        line-height: 1.2;
    }
    .data-label {
        font-size: 14px;
        color: var(--text-muted);
        margin-top: 4px;
    }
    /* process */
    .process-wrap {
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        margin-top: 20px;
    }
    .process-item {
        flex: 1 1 280px;
        background: var(--bg-white);
        border-radius: var(--radius);
        padding: 28px;
        border: 1px solid var(--border);
        transition: var(--transition);
        position: relative;
    }
    .process-item:hover {
        box-shadow: var(--shadow-hover);
        border-color: rgba(37, 99, 235, .25);
    }
    .process-index {
        position: absolute;
        top: 18px;
        right: 20px;
        font-size: 40px;
        font-weight: 800;
        color: rgba(37, 99, 235, .1);
        line-height: 1;
    }
    .process-item h4 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--text-main);
    }
    .process-item p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
    }
    /* comparison table */
    .comparison-section {
        background: var(--bg-light);
    }
    .comparison-card {
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 28px;
        height: 100%;
        transition: var(--transition);
    }
    .comparison-card:hover {
        box-shadow: var(--shadow-hover);
    }
    .comparison-card.featured {
        border-color: var(--primary);
        position: relative;
        overflow: hidden;
    }
    .comparison-card.featured::before {
        content: '推荐';
        position: absolute;
        top: 0;
        right: 0;
        background: var(--primary);
        color: #fff;
        font-size: 12px;
        padding: 4px 16px;
        border-radius: 0 0 0 10px;
        font-weight: 600;
    }
    .comparison-card h4 {
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 14px;
        color: var(--text-main);
    }
    .comparison-card p {
        color: var(--text-muted);
        font-size: 14px;
        margin-bottom: 16px;
    }
    .comp-list li {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 7px 0;
        font-size: 14px;
        color: var(--text-main);
    }
    .comp-list li i {
        font-size: 14px;
        width: 18px;
        color: var(--primary);
    }
    .comp-list li i.fa-xmark {
        color: var(--text-weak);
    }
    /* articles */
    .post-card {
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
        height: 100%;
        transition: var(--transition);
    }
    .post-card:hover {
        box-shadow: var(--shadow-hover);
        transform: translateY(-6px);
    }
    .post-cover {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16/10;
    }
    .post-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .5s ease;
    }
    .post-card:hover .post-cover img {
        transform: scale(1.05);
    }
    .post-cat {
        position: absolute;
        bottom: 12px;
        left: 12px;
        background: rgba(15, 23, 42, .85);
        color: #fff;
        font-size: 12px;
        padding: 4px 12px;
        border-radius: 20px;
        backdrop-filter: blur(4px);
    }
    .post-body {
        padding: 22px;
    }
    .post-meta {
        display: flex;
        gap: 14px;
        font-size: 13px;
        color: var(--text-weak);
        margin-bottom: 8px;
    }
    .post-body h4 {
        font-size: 17px;
        font-weight: 600;
        margin-bottom: 10px;
    }
    .post-body h4 a {
        color: var(--text-main);
    }
    .post-body h4 a:hover {
        color: var(--primary);
    }
    .post-body p {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.65;
        margin-bottom: 14px;
    }
    .post-link {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .post-link i {
        font-size: 12px;
        transition: var(--transition);
    }
    .post-card:hover .post-link i {
        transform: translateX(4px);
    }
    /* FAQ */
    .faq-wrap {
        max-width: 820px;
        margin: 0 auto;
    }
    .faq-item {
        background: var(--bg-white);
        border: 1px solid var(--border);
        border-radius: 14px;
        margin-bottom: 14px;
        overflow: hidden;
        transition: var(--transition);
    }
    .faq-item:hover {
        border-color: rgba(37, 99, 235, .3);
    }
    .faq-question {
        padding: 18px 22px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-weight: 600;
        font-size: 16px;
        color: var(--text-main);
        transition: var(--transition);
        background: transparent;
        border: none;
        width: 100%;
        text-align: left;
    }
    .faq-question:hover {
        color: var(--primary);
    }
    .faq-question i {
        font-size: 16px;
        color: var(--primary);
        flex-shrink: 0;
        transition: var(--transition);
    }
    .faq-item.active .faq-question i {
        transform: rotate(180deg);
    }
    .faq-answer {
        padding: 0 22px;
        max-height: 0;
        overflow: hidden;
        transition: max-height .35s ease, padding .3s ease;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.75;
    }
    .faq-item.active .faq-answer {
        padding: 0 22px 20px;
        max-height: 300px;
    }
    /* CTA */
    .cta-section {
        background: linear-gradient(135deg, #1e40af 0%, #0b1a33 100%);
        padding: 80px 0;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
        opacity: .1;
        z-index: 0;
    }
    .cta-section::after {
        content: '';
        position: absolute;
        top: -60px;
        right: -60px;
        width: 300px;
        height: 300px;
        background: radial-gradient(circle, rgba(6, 182, 212, .3), transparent 70%);
    }
    .cta-section .container {
        position: relative;
        z-index: 2;
    }
    .cta-box {
        background: rgba(255, 255, 255, .08);
        border: 1px solid rgba(255, 255, 255, .15);
        border-radius: 24px;
        padding: 50px 40px;
        text-align: center;
        backdrop-filter: blur(12px);
    }
    .cta-box h2 {
        color: #fff;
        font-size: clamp(26px, 4vw, 36px);
        font-weight: 800;
        margin-bottom: 14px;
    }
    .cta-box p {
        color: rgba(255, 255, 255, .75);
        font-size: 16px;
        max-width: 560px;
        margin: 0 auto 28px;
        line-height: 1.8;
    }
    .cta-btns {
        display: flex;
        justify-content: center;
        gap: 14px;
        flex-wrap: wrap;
    }
    /* footer */
    .footer {
        background: #0b1220;
        color: rgba(255, 255, 255, .7);
        padding: 60px 0 0;
        font-size: 14px;
    }
    .footer .brand-icon {
        background: linear-gradient(135deg, var(--primary), var(--accent));
    }
    .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 14px;
    }
    .footer .brand-name {
        color: #fff;
        font-size: 20px;
        font-weight: 700;
    }
    .footer-desc {
        font-size: 14px;
        line-height: 1.75;
        color: rgba(255, 255, 255, .55);
        margin-bottom: 16px;
    }
    .footer-contact div {
        padding: 5px 0;
        font-size: 14px;
        color: rgba(255, 255, 255, .6);
    }
    .footer-contact i {
        color: var(--accent);
        width: 20px;
        margin-right: 6px;
    }
    .footer h5 {
        color: #fff;
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 16px;
        position: relative;
        padding-bottom: 10px;
    }
    .footer h5::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 28px;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
    }
    .footer-links li {
        padding: 5px 0;
    }
    .footer-links a {
        color: rgba(255, 255, 255, .6);
        transition: var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .footer-links a:hover {
        color: #fff;
        padding-left: 4px;
    }
    .footer-links a::before {
        content: "›";
        color: var(--accent);
        font-weight: 700;
    }
    .footer-links a.btn-main,
    .footer-links a.btn-ghost {
        display: inline-flex;
    }
    .footer-links a.btn-main::before {
        display: none;
    }
    .footer-links a.btn-ghost::before {
        display: none;
    }
    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, .08);
        margin-top: 40px;
        padding: 20px 0;
        display: flex;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 13px;
        color: rgba(255, 255, 255, .4);
    }
    /* responsive */
    @media (max-width: 991.98px) {
        .section {
            padding: 60px 0;
        }
        .main-menu {
            padding-top: 12px;
            padding-bottom: 12px;
        }
        .main-menu .nav-link {
            padding: 10px 16px !important;
            border-radius: 8px;
        }
        .main-menu .nav-link:hover,
        .main-menu .nav-link.active {
            background: rgba(37, 99, 235, .08);
        }
        .navbar-collapse {
            background: var(--bg-white);
            border-radius: 16px;
            box-shadow: var(--shadow);
            padding: 12px 16px;
            margin-top: 10px;
            border: 1px solid var(--border);
        }
        .hero-stats {
            gap: 16px;
        }
        .hero-stat-item {
            min-width: 100px;
            padding: 12px 18px;
        }
        .cta-box {
            padding: 36px 24px;
        }
    }
    @media (max-width: 767.98px) {
        .top-bar .container {
            justify-content: center;
        }
        .top-bar .top-right {
            display: none;
        }
        .page-hero {
            padding: 60px 0 52px;
        }
        .hero-stat-item .num {
            font-size: 24px;
        }
        .hero-stat-item .label {
            font-size: 12px;
        }
        .section {
            padding: 48px 0;
        }
        .section-title {
            font-size: 28px;
        }
        .footer-bottom {
            flex-direction: column;
            text-align: center;
            justify-content: center;
        }
    }
    @media (max-width: 520px) {
        body {
            font-size: 15px;
        }
        .brand-name {
            font-size: 18px;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 16px;
        }
        .page-hero h1 {
            font-size: 30px;
        }
        .hero-stats {
            gap: 10px;
        }
        .hero-stat-item {
            flex: 1 1 40%;
            min-width: 90px;
            padding: 12px 10px;
        }
        .hero-stat-item .num {
            font-size: 22px;
        }
        .faq-question {
            font-size: 15px;
            padding: 16px;
        }
        .faq-answer {
            font-size: 14px;
        }
        .cta-box {
            padding: 28px 18px;
            border-radius: 18px;
        }
        .cta-btns {
            flex-direction: column;
            align-items: stretch;
        }
        .cta-btns .btn-main,
        .cta-btns .btn-ghost,
        .cta-btns .btn-light {
            width: 100%;
        }
    }

/* roulang page: category3 */
:root{
  --primary:#6366f1;
  --primary-dark:#4f46e5;
  --primary-light:#eef2ff;
  --accent:#f59e0b;
  --accent-light:#fef3c7;
  --dark:#0f172a;
  --darker:#0b1120;
  --dark-soft:#1e293b;
  --gray:#f8fafc;
  --gray-light:#f1f5f9;
  --text:#1e293b;
  --text-muted:#64748b;
  --border:#e2e8f0;
  --white:#ffffff;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow:0 10px 30px rgba(15,23,42,.08);
  --shadow-lg:0 24px 60px rgba(15,23,42,.12);
  --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  line-height:1.7;
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:var(--primary);transition:var(--transition)}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
button{outline:none}
.container{max-width:1200px}
/* ========== 顶部信息条 ========== */
.topbar{
  background:var(--dark);
  color:rgba(255,255,255,.85);
  font-size:13px;
  padding:7px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar a{color:#c7d2fe;font-weight:500}
.topbar a:hover{color:#fff}
/* ========== 主导航 ========== */
.main-header{
  position:sticky;top:0;z-index:1050;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 12px rgba(15,23,42,.04);
}
.main-header .navbar{padding:14px 0}
.brand-logo{display:flex;align-items:center;gap:10px;font-weight:800}
.brand-logo .brand-icon{
  width:42px;height:42px;min-width:42px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:18px;
  box-shadow:0 4px 12px rgba(99,102,241,.35);
}
.brand-logo .brand-name{
  font-size:1.35rem;color:var(--dark);letter-spacing:.5px;
  background:linear-gradient(135deg,var(--dark) 30%,var(--primary) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.main-header .navbar-toggler{border:none;font-size:1.4rem;color:var(--dark);padding:4px 8px}
.main-header .navbar-toggler:focus{box-shadow:none}
.main-menu .nav-link{
  font-weight:600;
  font-size:.95rem;
  color:var(--text);
  padding:8px 16px !important;
  border-radius:8px;
  position:relative;
}
.main-menu .nav-link::after{
  content:"";
  position:absolute;left:16px;right:16px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);transform-origin:center;
  transition:transform .3s ease;
}
.main-menu .nav-link:hover{color:var(--primary);background:var(--primary-light)}
.main-menu .nav-link:hover::after{transform:scaleX(1)}
.main-menu .nav-link.active{color:var(--primary);background:var(--primary-light)}
.main-menu .nav-link.active::after{transform:scaleX(1)}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff !important;
  font-weight:700;
  font-size:.92rem;
  padding:10px 22px;
  border-radius:10px;
  box-shadow:0 4px 14px rgba(99,102,241,.35);
  transition:var(--transition);
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(99,102,241,.45);color:#fff}
.nav-cta:active{transform:translateY(0)}
/* ========== 页面横幅 ========== */
.page-hero{
  position:relative;
  background:linear-gradient(rgba(15,23,42,.82),rgba(15,23,42,.75)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:100px 0 90px;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;bottom:-40px;left:0;right:0;height:120px;
  background:linear-gradient(transparent,var(--white));
  opacity:.25;
}
.page-hero .hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(99,102,241,.25);
  border:1px solid rgba(255,255,255,.2);
  color:#e0e7ff;
  font-size:.85rem;
  font-weight:600;
  padding:6px 16px;
  border-radius:30px;
  margin-bottom:22px;
  backdrop-filter:blur(4px);
}
.page-hero .hero-badge i{color:var(--accent)}
.page-hero h1{
  font-size:3rem;
  font-weight:800;
  line-height:1.25;
  letter-spacing:1px;
  margin-bottom:18px;
}
.page-hero h1 span{color:#a5b4fc}
.page-hero p.lead{
  max-width:680px;
  color:rgba(255,255,255,.85);
  font-size:1.12rem;
  margin-bottom:32px;
  line-height:1.8;
}
.hero-btn-group{display:flex;flex-wrap:wrap;gap:14px}
.btn-main{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff !important;
  font-weight:700;
  padding:12px 30px;
  border-radius:10px;
  border:none;
  font-size:.95rem;
  box-shadow:0 6px 20px rgba(99,102,241,.4);
  transition:var(--transition);
  cursor:pointer;
}
.btn-main:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(99,102,241,.5);color:#fff}
.btn-main:active{transform:translateY(0)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);
  border:1.5px solid rgba(255,255,255,.45);
  color:#fff !important;
  font-weight:600;
  padding:11px 28px;
  border-radius:10px;
  font-size:.95rem;
  backdrop-filter:blur(4px);
  transition:var(--transition);
}
.btn-ghost:hover{background:rgba(255,255,255,.2);border-color:#fff;transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
/* ========== 板块通用 ========== */
.section{padding:90px 0}
.section-alt{background:var(--gray);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{text-align:center;max-width:760px;margin:0 auto 60px}
.section-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-light);
  color:var(--primary);
  font-size:.82rem;font-weight:700;
  padding:5px 16px;border-radius:30px;
  margin-bottom:14px;
  text-transform:uppercase;letter-spacing:.5px;
}
.section-head h2{
  font-size:2.2rem;
  font-weight:800;
  color:var(--dark);
  line-height:1.3;
  margin-bottom:14px;
}
.section-head p{color:var(--text-muted);font-size:1.02rem;line-height:1.8}
/* ========== 安全指标数据条 ========== */
.stats-band{
  margin-top:-40px;
  position:relative;z-index:10;
}
.stats-band .stats-box{
  background:#fff;
  border-radius:var(--radius);
  padding:36px 30px;
  box-shadow:var(--shadow-lg);
  border:1px solid var(--border);
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
}
.stat-item{text-align:center;padding:10px 15px;position:relative}
.stat-item + .stat-item::before{
  content:"";
  position:absolute;left:0;top:20%;bottom:20%;
  width:1px;background:var(--border);
}
.stat-num{
  font-size:2.5rem;
  font-weight:800;
  background:linear-gradient(135deg,var(--primary) 30%,var(--primary-dark) 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  line-height:1.2;
  margin-bottom:6px;
}
.stat-num small{font-size:1.3rem;font-weight:700}
.stat-label{color:var(--text-muted);font-size:.9rem;font-weight:600}
/* ========== 核心安全能力卡片 ========== */
.security-cards .card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:34px 28px;
  height:100%;
  background:#fff;
  transition:var(--transition);
  position:relative;
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.security-cards .card::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  opacity:0;transition:var(--transition);
}
.security-cards .card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow);
  border-color:rgba(99,102,241,.35);
}
.security-cards .card:hover::before{opacity:1}
.security-cards .icon-wrap{
  width:64px;height:64px;min-width:64px;
  border-radius:16px;
  display:flex;align-items:center;justify-content:center;
  font-size:1.6rem;margin-bottom:22px;
  background:var(--primary-light);
  color:var(--primary);
  transition:var(--transition);
}
.security-cards .card:nth-child(2) .icon-wrap{background:#fef3c7;color:#d97706}
.security-cards .card:nth-child(3) .icon-wrap{background:#dcfce7;color:#16a34a}
.security-cards .card:nth-child(4) .icon-wrap{background:#fee2e2;color:#dc2626}
.security-cards .card:hover .icon-wrap{transform:scale(1.08) rotate(-3deg)}
.security-cards h3{font-size:1.1rem;font-weight:700;color:var(--dark);margin-bottom:12px}
.security-cards p{color:var(--text-muted);font-size:.93rem;line-height:1.75}
/* ========== 安全保障流程 ========== */
.process-section{
  background:linear-gradient(135deg,var(--dark) 0%,var(--dark-soft) 100%);
  color:#fff;
  padding:90px 0;
  position:relative;
  overflow:hidden;
}
.process-section::before{
  content:"";
  position:absolute;top:-80px;right:-80px;width:300px;height:300px;
  background:radial-gradient(circle,rgba(99,102,241,.3),transparent 70%);
  border-radius:50%;
}
.process-section .section-tag{background:rgba(99,102,241,.25);color:#c7d2fe}
.process-section .section-head h2{color:#fff}
.process-section .section-head p{color:rgba(255,255,255,.65)}
.process-step{
  text-align:center;
  padding:35px 25px;
  position:relative;
}
.process-step .step-num{
  width:60px;height:60px;min-width:60px;
  margin:0 auto 20px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  border:3px solid rgba(255,255,255,.15);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;font-weight:800;color:#fff;
  box-shadow:0 0 0 6px rgba(99,102,241,.25);
}
.process-step h3{font-size:1.1rem;font-weight:700;margin-bottom:12px;color:#fff}
.process-step p{color:rgba(255,255,255,.6);font-size:.92rem;line-height:1.7}
.process-step::after{
  content:"";
  position:absolute;top:50%;right:-15px;
  width:30px;height:2px;
  background:linear-gradient(90deg,rgba(99,102,241,.6),rgba(99,102,241,.1));
  display:none;
}
@media(min-width:768px){
  .process-step::after{display:block}
  .process-step:last-child::after{display:none}
}
/* ========== 图文安全区块 ========== */
.safety-feature-row{
  display:flex;align-items:center;gap:60px;
  margin-bottom:80px;
}
.safety-feature-row:last-child{margin-bottom:0}
.safety-feature-row.reverse{flex-direction:row-reverse}
.safety-media{
  flex:1;border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-lg);
  position:relative;
}
.safety-media img{width:100%;height:360px;object-fit:cover;transition:transform .6s ease}
.safety-media:hover img{transform:scale(1.04)}
.safety-media .media-tag{
  position:absolute;top:20px;left:20px;
  background:rgba(15,23,42,.75);
  backdrop-filter:blur(8px);
  color:#fff;font-size:.82rem;font-weight:600;
  padding:6px 16px;border-radius:30px;
  border:1px solid rgba(255,255,255,.2);
}
.safety-content{flex:1}
.safety-content .content-tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--primary-light);color:var(--primary);
  font-size:.82rem;font-weight:700;
  padding:4px 14px;border-radius:30px;margin-bottom:14px;
}
.safety-content h2{font-size:1.7rem;font-weight:800;color:var(--dark);line-height:1.35;margin-bottom:16px}
.safety-content p{color:var(--text-muted);font-size:.96rem;line-height:1.8;margin-bottom:20px}
.safety-list li{
  padding:10px 0;border-bottom:1px dashed var(--border);
  display:flex;align-items:center;gap:12px;
  font-size:.95rem;color:var(--text);
}
.safety-list li:last-child{border-bottom:none}
.safety-list li i{color:var(--primary);width:20px;font-size:1rem}
/* ========== 资讯卡片 ========== */
.news-card{
  background:#fff;border-radius:var(--radius);
  overflow:hidden;border:1px solid var(--border);
  box-shadow:var(--shadow-sm);height:100%;
  transition:var(--transition);
  display:flex;flex-direction:column;
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(99,102,241,.3)}
.news-card .news-img{position:relative;overflow:hidden;height:200px}
.news-card .news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-img img{transform:scale(1.06)}
.news-card .news-cat{
  position:absolute;top:14px;left:14px;
  background:rgba(99,102,241,.9);
  color:#fff;font-size:.78rem;font-weight:600;
  padding:4px 12px;border-radius:20px;
  backdrop-filter:blur(4px);
}
.news-card .news-body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-card .news-date{font-size:.8rem;color:var(--text-muted);margin-bottom:10px;display:flex;align-items:center;gap:6px}
.news-card h3{font-size:1.02rem;font-weight:700;color:var(--dark);line-height:1.5;margin-bottom:10px}
.news-card h3 a{color:inherit}
.news-card h3 a:hover{color:var(--primary)}
.news-card p{font-size:.88rem;color:var(--text-muted);line-height:1.7;flex:1}
.news-card .news-link{
  font-size:.88rem;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;
}
.news-card .news-link:hover{gap:10px;color:var(--primary-dark)}
/* ========== FAQ ========== */
.faq-section{background:var(--gray-light)}
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:14px;
  margin-bottom:14px;
  overflow:hidden;
  transition:var(--transition);
}
.faq-item:hover{border-color:rgba(99,102,241,.35);box-shadow:var(--shadow-sm)}
.faq-item summary{
  padding:20px 26px;
  font-size:1rem;font-weight:700;color:var(--dark);
  cursor:pointer;display:flex;align-items:center;gap:14px;
  position:relative;list-style:none;
  transition:var(--transition);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{
  width:32px;height:32px;min-width:32px;
  background:var(--primary-light);color:var(--primary);
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:.9rem;transition:var(--transition);
}
.faq-item[open] summary{background:var(--primary-light)}
.faq-item[open] summary .faq-icon{background:var(--primary);color:#fff;transform:rotate(45deg)}
.faq-item .faq-answer{
  padding:0 26px 22px 72px;
  color:var(--text-muted);font-size:.94rem;line-height:1.8;
}
.faq-item .faq-answer strong{color:var(--dark)}
/* ========== CTA ========== */
.cta-section{
  background:linear-gradient(rgba(15,23,42,.88),rgba(15,23,42,.82)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding:90px 0;
  text-align:center;
  color:#fff;
  position:relative;
}
.cta-section h2{
  font-size:2.3rem;
  font-weight:800;
  margin-bottom:16px;
  letter-spacing:.5px;
}
.cta-section p{
  max-width:640px;
  margin:0 auto 36px;
  color:rgba(255,255,255,.75);
  font-size:1.05rem;line-height:1.8;
}
.cta-section .btn-main{padding:14px 38px;font-size:1.05rem}
.cta-section .btn-ghost{border-color:rgba(255,255,255,.4)}
/* ========== 页脚 ========== */
.footer{
  background:var(--darker);
  color:rgba(255,255,255,.7);
  padding:80px 0 0;
  font-size:.92rem;
}
.footer .brand-logo{margin-bottom:18px}
.footer .brand-logo .brand-name{color:#fff;-webkit-text-fill-color:#fff}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-icon{
  width:40px;height:40px;min-width:40px;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;
}
.footer-brand .brand-name{font-size:1.2rem;font-weight:800;color:#fff}
.footer-desc{color:rgba(255,255,255,.55);font-size:.9rem;line-height:1.8;margin-bottom:20px}
.footer-contact{margin-top:10px}
.footer-contact div{padding:5px 0;display:flex;align-items:center;gap:10px;font-size:.88rem;color:rgba(255,255,255,.6)}
.footer-contact div i{color:var(--primary);width:18px}
.footer h5{
  color:#fff;font-size:1rem;font-weight:700;
  margin-bottom:20px;letter-spacing:.5px;
  position:relative;padding-bottom:10px;
}
.footer h5::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:32px;height:2px;
  background:var(--primary);
  border-radius:2px;
}
.footer-links li{margin-bottom:10px}
.footer-links a{
  color:rgba(255,255,255,.6);
  font-size:.9rem;
  transition:var(--transition);
  display:inline-block;
}
.footer-links a:hover{color:#fff;transform:translateX(4px)}
.footer-links .btn-main,.footer-links .btn-ghost{margin-bottom:10px}
.footer-bottom{
  margin-top:60px;
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;
  gap:8px;font-size:.85rem;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
/* ========== 响应式 ========== */
@media(max-width:1024px){
  .page-hero h1{font-size:2.4rem}
  .section{padding:70px 0}
  .stats-band .stats-box{grid-template-columns:repeat(2,1fr);gap:20px}
  .stat-item + .stat-item::before{display:none}
  .safety-feature-row,.safety-feature-row.reverse{flex-direction:column;gap:30px}
  .safety-media img{height:300px}
}
@media(max-width:768px){
  .main-header .navbar{padding:10px 0}
  .main-menu{padding:14px 0}
  .main-menu .nav-link{padding:10px 16px !important;font-size:1rem}
  .nav-cta{justify-content:center;margin-top:8px}
  .page-hero{padding:70px 0 80px}
  .page-hero h1{font-size:1.9rem}
  .page-hero p.lead{font-size:1rem}
  .section{padding:55px 0}
  .section-head{margin-bottom:40px}
  .section-head h2{font-size:1.7rem}
  .section-tag{font-size:.75rem}
  .stats-band .stats-box{grid-template-columns:1fr 1fr;padding:20px}
  .stat-num{font-size:1.9rem}
  .process-step::after{display:none}
  .cta-section h2{font-size:1.8rem}
  .footer{padding:55px 0 0}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
  .page-hero h1{font-size:1.55rem;letter-spacing:0}
  .page-hero .hero-badge{font-size:.78rem}
  .hero-btn-group{flex-direction:column;align-items:stretch}
  .hero-btn-group .btn-main,.hero-btn-group .btn-ghost{justify-content:center}
  .section-head h2{font-size:1.5rem}
  .stats-band .stats-box{grid-template-columns:1fr 1fr;gap:14px;padding:18px 12px}
  .stat-num{font-size:1.6rem}
  .stat-label{font-size:.78rem}
  .security-cards .card{padding:26px 20px}
  .safety-media img{height:220px}
  .safety-content h2{font-size:1.35rem}
  .faq-item summary{font-size:.94rem;padding:16px 18px}
  .faq-item .faq-answer{padding:0 18px 18px 18px;font-size:.88rem}
  .cta-section h2{font-size:1.5rem}
  .cta-section .btn-main{width:100%;justify-content:center}
}