/* roulang page: index */
:root {
    --primary: #2E6BFF;
    --primary-hover: #1E4FC4;
    --primary-light: #EAF1FF;
    --primary-soft: #D6E4FF;
    --accent: #F5A623;
    --accent-light: #FFF7E0;
    --bg-base: #F0F5FA;
    --text-main: #1E293B;
    --text-sub: #64748B;
    --text-muted: #94A3B8;
    --border-card: #E2E8F0;
    --input-border: #CBD5E1;
    --radius-card: 16px;
    --radius-btn: 12px;
    --shadow-card: 0 4px 20px rgba(30, 41, 59, 0.06);
    --shadow-hover: 0 12px 32px rgba(30, 41, 59, 0.12);
    --shadow-btn: 0 4px 14px rgba(46, 107, 255, 0.35);
    --container: 1280px;
  }
  * {
    box-sizing: border-box;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-main);
    background: var(--bg-base);
    -webkit-font-smoothing: antialiased;
  }
  img {
    max-width: 100%;
    display: block;
  }
  a {
    color: var(--primary);
    text-decoration: none;
    transition: color .2s ease;
  }
  a:hover {
    color: var(--primary-hover);
  }
  button {
    font-family: inherit;
    cursor: pointer;
  }
  input {
    font-family: inherit;
  }
  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
    width: 100%;
  }
  .section {
    padding: 96px 0;
  }
  .section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
  }
  .section-kicker {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 999px;
    padding: 6px 16px;
    letter-spacing: .5px;
  }
  .section-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    margin: 16px 0 12px;
    color: var(--text-main);
  }
  .section-desc {
    font-size: 14px;
    color: var(--text-sub);
    margin: 0;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-btn);
    font-size: 16px;
    font-weight: 600;
    border: none;
    transition: all .2s ease;
    white-space: nowrap;
  }
  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-btn);
  }
  .btn-primary:hover {
    background: var(--primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
  }
  .btn-primary:active {
    transform: translateY(0);
  }
  .btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--primary);
  }
  .btn-outline:hover {
    background: var(--primary-light);
    color: var(--primary-hover);
    border-color: var(--primary-hover);
  }
  .btn-accent {
    background: var(--accent);
    color: #1E293B;
    box-shadow: 0 4px 14px rgba(245, 166, 35, 0.35);
  }
  .btn-accent:hover {
    background: #E89516;
    color: #1E293B;
    transform: translateY(-2px);
  }
  .btn-lg {
    height: 52px;
    padding: 0 32px;
    font-size: 16px;
  }
  .btn-sm {
    height: 40px;
    padding: 0 20px;
    font-size: 15px;
  }
  .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-card);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }
  .header-left {
    display: flex;
    align-items: center;
    gap: 32px;
  }
  .brand {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .brand-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .nav-link {
    display: inline-flex;
    align-items: center;
    height: 40px;
    padding: 0 16px;
    border-radius: 999px;
    font-size: 15px;
    color: var(--text-sub);
    transition: all .2s ease;
  }
  .nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
  }
  .nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    font-weight: 600;
  }
  .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .search-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
  }
  .search-toggle {
    width: 40px;
    height: 40px;
    border-radius: 999px;
    background: var(--primary-light);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: all .2s ease;
  }
  .search-toggle:hover {
    background: var(--primary-soft);
  }
  .search-input {
    width: 0;
    opacity: 0;
    padding: 0;
    border: 1px solid var(--input-border);
    border-radius: 12px;
    height: 40px;
    transition: all .3s ease;
    font-size: 14px;
    background: #fff;
    color: var(--text-main);
  }
  .search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.12);
  }
  .search-input::placeholder {
    color: var(--text-muted);
  }
  .search-wrap.open .search-input {
    width: 220px;
    opacity: 1;
    padding: 0 14px;
  }
  .menu-toggle {
    display: none;
  }
  .mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    z-index: 200;
    display: flex;
    flex-direction: column;
    padding: 80px 24px 32px;
    transform: translateX(100%);
    transition: transform .3s ease;
    overflow-y: auto;
  }
  .mobile-menu.open {
    transform: translateX(0);
  }
  .mobile-nav-link {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    padding: 18px 0;
    border-bottom: 1px solid var(--border-card);
    display: block;
  }
  .mobile-nav-link.active {
    color: var(--primary);
  }
  .mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border: none;
    border-radius: 12px;
    font-size: 20px;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .search-block {
    width: 100%;
    height: 44px;
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 0 16px;
    font-size: 14px;
    color: var(--text-main);
    margin: 24px 0 16px;
  }
  .search-block:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.12);
  }
  .hero {
    position: relative;
    padding: 96px 0;
    background: linear-gradient(135deg, #EAF1FF 0%, #F0F5FA 100%);
    overflow: hidden;
  }
  .hero::before {
    content: '';
    position: absolute;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 107, 255, 0.16) 0%, rgba(46, 107, 255, 0) 70%);
    top: -120px;
    right: 10%;
    pointer-events: none;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: center;
    position: relative;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--primary-soft);
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: var(--shadow-card);
  }
  .hero h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.15;
    margin: 20px 0 20px;
    color: var(--text-main);
  }
  .hero-sub {
    font-size: 17px;
    color: var(--text-sub);
    max-width: 480px;
    margin: 0 0 32px;
  }
  .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 36px;
  }
  .hero-trust {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }
  .trust-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 999px;
    padding: 8px 14px;
    font-weight: 500;
  }
  .hero-visual {
    position: relative;
    min-height: 420px;
  }
  .hero-visual-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    border-radius: 24px;
    box-shadow: var(--shadow-hover);
    border: 1px solid #fff;
  }
  .hero-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 24px;
    background: linear-gradient(220deg, rgba(46, 107, 255, 0.10) 0%, rgba(255, 255, 255, 0) 50%);
  }
  .hero-float-cards {
    position: absolute;
    bottom: 24px;
    left: 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    z-index: 2;
  }
  .float-card {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border-radius: 12px;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: var(--shadow-card);
    animation: float 3s ease-in-out infinite;
  }
  .float-card.gold {
    color: #B45309;
    background: var(--accent-light);
  }
  .float-card.blue {
    color: var(--primary);
    background: var(--primary-light);
  }
  .float-card:nth-child(2) {
    animation-delay: .5s;
  }
  .float-card:nth-child(3) {
    animation-delay: 1s;
  }
  .float-card:nth-child(4) {
    animation-delay: 1.5s;
  }
  @keyframes float {
    0%, 100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-6px);
    }
  }
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
  }
  .step-card {
    background: #fff;
    border-radius: var(--radius-card);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-card);
    padding: 32px 24px;
    position: relative;
    transition: all .2s ease;
  }
  .step-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }
  .step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 20px;
  }
  .step-icon {
    margin-bottom: 16px;
    color: var(--primary);
  }
  .step-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px;
  }
  .step-card p {
    font-size: 14px;
    color: var(--text-sub);
    margin: 0;
    line-height: 1.7;
    max-width: 200px;
  }
  .reward-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 32px;
    align-items: stretch;
  }
  .reward-main {
    background: linear-gradient(135deg, var(--primary-light) 0%, #fff 70%);
    border-radius: 24px;
    border: 1px solid var(--primary-soft);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
  }
  .reward-main::after {
    content: '';
    position: absolute;
    bottom: -40px;
    right: -40px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(46, 107, 255, 0.08);
  }
  .reward-main .gold-tag {
    display: inline-block;
    background: var(--accent);
    color: #1E293B;
    font-size: 13px;
    font-weight: 700;
    border-radius: 999px;
    padding: 6px 16px;
    margin-bottom: 20px;
    align-self: flex-start;
  }
  .reward-main h3 {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 12px;
  }
  .reward-main p {
    font-size: 15px;
    color: var(--text-sub);
    max-width: 380px;
    margin: 0;
    position: relative;
    z-index: 1;
  }
  .reward-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  .reward-card {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 24px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: all .2s ease;
  }
  .reward-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
  }
  .reward-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--accent-light);
    color: #B45309;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .reward-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 6px;
  }
  .reward-card p {
    font-size: 14px;
    color: var(--text-sub);
    margin: 0;
  }
  .progress-section {
    background: #fff;
  }
  .progress-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 64px;
    align-items: center;
  }
  .progress-panel {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 32px;
  }
  .progress-bar-wrap {
    margin-bottom: 28px;
  }
  .progress-bar-info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--text-sub);
    margin-bottom: 10px;
  }
  .progress-bar {
    height: 6px;
    border-radius: 999px;
    background: var(--primary-soft);
    overflow: hidden;
  }
  .progress-bar-fill {
    height: 100%;
    width: 60%;
    background: linear-gradient(90deg, var(--primary), #4A7CF7);
    border-radius: 999px;
  }
  .milestone-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
  .milestone-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
  }
  .milestone-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    margin-top: 5px;
    flex-shrink: 0;
  }
  .milestone-dot.done {
    background: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
  }
  .milestone-dot.active {
    background: #fff;
    border: 3px solid var(--accent);
    box-shadow: 0 0 0 4px var(--accent-light);
  }
  .milestone-dot.pending {
    background: #CBD5E1;
  }
  .milestone-content h5 {
    font-size: 15px;
    font-weight: 600;
    margin: 0 0 4px;
  }
  .milestone-content p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
  }
  .milestone-status {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
  }
  .panel-note {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-top: 24px;
  }
  .cta-band {
    padding: 80px 0;
  }
  .cta-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    border-radius: 24px;
    padding: 56px 40px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
  }
  .cta-card::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
  }
  .cta-card h2 {
    font-size: 32px;
    font-weight: 700;
    margin: 0 0 12px;
  }
  .cta-card p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 32px;
  }
  .cta-card .btn-accent {
    height: 52px;
    padding: 0 40px;
    font-size: 17px;
  }
  .cta-note {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 16px;
  }
  .news-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .news-card {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    display: flex;
    height: 100%;
    transition: all .2s ease;
    color: inherit;
  }
  .news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    color: inherit;
  }
  .news-thumb {
    width: 160px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
  }
  .news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .news-body {
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }
  .news-tag {
    align-self: flex-start;
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 10px;
    font-weight: 500;
  }
  .news-body h3 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    margin: 0 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-main);
  }
  .news-body p {
    font-size: 14px;
    color: var(--text-sub);
    margin: 0 0 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
  }
  .news-link {
    margin-left: auto;
    color: var(--primary);
    font-weight: 600;
  }
  .news-empty {
    border: 2px dashed var(--border-card);
    border-radius: 16px;
    padding: 48px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
  }
  .faq-section {
    background: linear-gradient(180deg, var(--bg-base) 0%, #EAF1FF 100%);
  }
  .faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 24px;
  }
  .faq-item {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all .2s ease;
  }
  .faq-item.active {
    box-shadow: var(--shadow-hover);
  }
  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    gap: 16px;
  }
  .faq-arrow {
    transition: transform .3s ease;
    color: var(--primary);
    flex-shrink: 0;
  }
  .faq-item.active .faq-arrow {
    transform: rotate(180deg);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
  }
  .faq-answer-inner {
    padding: 16px 24px 20px;
    font-size: 14px;
    color: var(--text-sub);
    border-top: 1px solid var(--border-card);
    line-height: 1.8;
  }
  .site-footer {
    background: #1E293B;
    color: #CBD5E1;
    padding-top: 64px;
    margin-top: 96px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
  }
  .footer-brand .brand-text {
    color: #fff;
  }
  .footer-brand-desc {
    font-size: 14px;
    color: #94A3B8;
    margin: 16px 0 20px;
    line-height: 1.8;
  }
  .footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }
  .footer-tag {
    font-size: 12px;
    background: rgba(255, 255, 255, 0.08);
    color: #CBD5E1;
    border-radius: 999px;
    padding: 4px 12px;
  }
  .footer-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 16px;
  }
  .footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  .footer-links li {
    margin-bottom: 10px;
  }
  .footer-links a {
    color: #94A3B8;
    font-size: 14px;
    transition: color .2s ease;
  }
  .footer-links a:hover {
    color: #fff;
  }
  .footer-contact {
    font-size: 14px;
    color: #94A3B8;
    line-height: 2;
    margin: 0;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    text-align: center;
    font-size: 12px;
    color: #94A3B8;
  }
  @media (max-width: 1024px) {
    .main-nav {
      display: none;
    }
    .header-right .search-wrap {
      display: none;
    }
    .header-right .btn-primary {
      display: none;
    }
    .menu-toggle {
      display: flex;
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      border: none;
      border-radius: 12px;
      color: var(--primary);
      align-items: center;
      justify-content: center;
      font-size: 20px;
    }
    .hero-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .hero h1 {
      font-size: 48px;
    }
    .hero-visual {
      min-height: 360px;
    }
    .steps-grid {
      grid-template-columns: 1fr 1fr;
    }
    .reward-grid {
      grid-template-columns: 1fr;
    }
    .progress-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
    }
  }
  @media (max-width: 768px) {
    .section {
      padding: 64px 0;
    }
    .section-title {
      font-size: 28px;
    }
    .container {
      padding: 0 20px;
    }
    .hero {
      padding: 64px 0;
    }
    .hero h1 {
      font-size: 40px;
    }
    .hero-sub {
      font-size: 16px;
    }
    .hero-visual {
      min-height: 280px;
    }
    .hero-float-cards {
      bottom: 16px;
      left: 16px;
    }
    .steps-grid {
      grid-template-columns: 1fr;
    }
    .cta-card {
      padding: 40px 24px;
    }
    .cta-card h2 {
      font-size: 24px;
    }
    .news-list {
      grid-template-columns: 1fr;
    }
    .news-thumb {
      width: 120px;
    }
    .faq-grid {
      grid-template-columns: 1fr;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .header-inner {
      height: 56px;
    }
  }
  @media (max-width: 520px) {
    .brand-text {
      font-size: 16px;
    }
    .brand-icon {
      width: 28px;
      height: 28px;
    }
    .news-card {
      flex-direction: column;
    }
    .news-thumb {
      width: 100%;
      height: 160px;
    }
    .hero-actions .btn {
      width: 100%;
    }
    .reward-main {
      padding: 28px 20px;
    }
    .reward-card {
      flex-direction: column;
    }
    .search-toggle {
      width: 36px;
      height: 36px;
    }
  }

/* roulang page: category1 */
:root {
      --primary: #2E6BFF;
      --primary-hover: #1E4FC4;
      --primary-light: #D6E4FF;
      --primary-soft: #EAF1FF;
      --accent: #F5A623;
      --accent-light: #FFF7E0;
      --bg-base: #F0F5FA;
      --text-main: #1E293B;
      --text-sub: #64748B;
      --text-weak: #94A3B8;
      --border-card: #E2E8F0;
      --radius-card: 16px;
      --radius-btn: 12px;
      --shadow-card: 0 4px 20px rgba(30, 41, 59, 0.06);
      --shadow-hover: 0 12px 32px rgba(30, 41, 59, 0.12);
      --shadow-btn: 0 4px 14px rgba(46, 107, 255, 0.35);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
      background: var(--bg-base);
      color: var(--text-main);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    button {
      font-family: inherit;
      cursor: pointer;
    }
    ul,
    ol {
      list-style: none;
    }
    ::selection {
      background: var(--primary-light);
      color: #1E293B;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* ===== Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-card);
      height: 64px;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      gap: 24px;
    }
    .header-left {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      white-space: nowrap;
    }
    .brand-icon {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: var(--primary);
      border-radius: 10px;
      color: #fff;
      flex-shrink: 0;
    }
    .brand-text {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .nav-link {
      display: inline-flex;
      align-items: center;
      height: 40px;
      padding: 0 16px;
      border-radius: 999px;
      font-size: 15px;
      color: var(--text-sub);
      font-weight: 500;
      transition: all 0.2s ease;
    }
    .nav-link:hover {
      color: var(--primary);
      background: var(--primary-soft);
    }
    .nav-link.active {
      background: var(--primary-soft);
      color: var(--primary);
      font-weight: 600;
    }
    .header-right {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .search-box {
      display: flex;
      align-items: center;
      width: 220px;
      height: 40px;
      background: var(--primary-soft);
      border-radius: 999px;
      padding: 0 14px;
      gap: 8px;
      transition: all 0.3s ease;
      border: 1px solid transparent;
    }
    .search-box input {
      flex: 1;
      border: none;
      outline: none;
      background: transparent;
      font-size: 14px;
      color: var(--text-main);
    }
    .search-box input::placeholder {
      color: var(--text-weak);
    }
    .search-box:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(46, 107, 255, 0.12);
    }
    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      background: var(--primary-soft);
      border: none;
      border-radius: 10px;
      align-items: center;
      justify-content: center;
    }
    .nav-toggle svg {
      width: 20px;
      height: 20px;
      stroke: var(--primary);
    }

    /* ===== Mobile Nav ===== */
    .mobile-nav {
      display: none;
      position: fixed;
      top: 56px;
      left: 0;
      right: 0;
      bottom: 0;
      background: #fff;
      z-index: 99;
      flex-direction: column;
      padding: 24px 20px 32px;
    }
    .mobile-nav.open {
      display: flex;
    }
    .mobile-nav .nav-link {
      font-size: 19px;
      height: 56px;
      border-radius: 12px;
      padding: 0 20px;
      display: flex;
      align-items: center;
    }
    .mobile-nav-actions {
      margin-top: auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
      padding-top: 32px;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      border-radius: 12px;
      cursor: pointer;
      transition: all 0.2s ease;
      border: none;
      font-size: 15px;
      line-height: 1.2;
    }
    .btn:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      height: 40px;
      padding: 0 24px;
      box-shadow: var(--shadow-btn);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(46, 107, 255, 0.4);
    }
    .btn-primary:active {
      transform: translateY(0);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
      height: 44px;
      padding: 0 28px;
    }
    .btn-outline:hover {
      background: var(--primary-soft);
      transform: translateY(-2px);
    }
    .btn-lg {
      height: 52px;
      padding: 0 36px;
      font-size: 16px;
      border-radius: 14px;
    }
    .btn-gold {
      background: var(--accent);
      color: #1E293B;
      height: 52px;
      padding: 0 36px;
      font-size: 16px;
      border-radius: 14px;
      box-shadow: 0 4px 14px rgba(245, 166, 35, 0.35);
    }
    .btn-gold:hover {
      background: #E89B1A;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(245, 166, 35, 0.4);
    }

    /* ===== Page Hero ===== */
    .page-hero {
      position: relative;
      min-height: 260px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      background:
        linear-gradient(rgba(46, 107, 255, 0.18), rgba(240, 245, 250, 0.92)),
        url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
      padding: 72px 20px;
    }
    .page-hero h1 {
      font-size: 34px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 12px;
    }
    .page-hero .page-hero-sub {
      font-size: 15px;
      color: var(--text-sub);
      max-width: 620px;
      margin: 0 auto;
    }

    /* ===== Section ===== */
    .section {
      padding: 96px 0;
    }
    .section-sm {
      padding: 64px 0;
    }
    .section-kicker {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 0.05em;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 40px;
      max-width: 640px;
    }
    .section-head-center {
      text-align: center;
    }
    .section-head-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    /* ===== Steps ===== */
    .step-card {
      position: relative;
      background: #fff;
      border: 1px solid var(--border-card);
      border-radius: 16px;
      padding: 32px 24px;
      text-align: center;
      box-shadow: var(--shadow-card);
      transition: all 0.2s ease;
    }
    .step-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .step-num {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary);
      font-size: 16px;
      font-weight: 800;
      margin: 0 auto 16px;
    }
    .step-icon {
      display: flex;
      justify-content: center;
      margin-bottom: 8px;
      color: var(--primary);
    }
    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.7;
    }

    /* ===== Feature Alternate ===== */
    .feature-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
      margin-bottom: 80px;
    }
    .feature-block:last-child {
      margin-bottom: 0;
    }
    .feature-image {
      border-radius: 20px;
      overflow: hidden;
      border: 1px solid var(--border-card);
      box-shadow: var(--shadow-card);
    }
    .feature-image img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }
    .feature-content h3 {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.4;
    }
    .feature-content p {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.9;
      margin-bottom: 20px;
    }
    .feature-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text-sub);
    }
    .feature-list li::before {
      content: '';
      flex-shrink: 0;
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      margin-top: 10px;
    }

    /* ===== FAQ ===== */
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px 32px;
      margin-top: 48px;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--border-card);
      border-radius: 14px;
      padding: 24px;
      transition: all 0.2s ease;
    }
    .faq-item:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-card);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      width: 100%;
      background: none;
      border: none;
      cursor: pointer;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      text-align: left;
      padding: 0;
    }
    .faq-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      transition: transform 0.3s ease;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.8;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding-top: 12px;
    }

    /* ===== CTA Band ===== */
    .cta-band {
      background: linear-gradient(135deg, #2E6BFF 0%, #1E4FC4 100%);
      border-radius: 24px;
      padding: 48px 48px;
      text-align: center;
      margin: 96px 0;
      position: relative;
      overflow: hidden;
    }
    .cta-band::before {
      content: '';
      position: absolute;
      top: -80px;
      right: -60px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.07);
    }
    .cta-band::after {
      content: '';
      position: absolute;
      bottom: -60px;
      left: -40px;
      width: 160px;
      height: 160px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
    }
    .cta-band h2 {
      font-size: 28px;
      font-weight: 800;
      color: #fff;
      margin-bottom: 10px;
      position: relative;
      z-index: 1;
    }
    .cta-band p {
      color: rgba(255, 255, 255, 0.85);
      font-size: 14px;
      margin-bottom: 28px;
      position: relative;
      z-index: 1;
    }
    .cta-band .btn-gold {
      position: relative;
      z-index: 1;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: #1E293B;
      color: #94A3B8;
      padding: 64px 0 32px;
      margin-top: 40px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand .brand-text {
      color: #fff;
    }
    .footer-brand-desc {
      font-size: 14px;
      color: #94A3B8;
      margin-top: 16px;
      line-height: 1.8;
    }
    .footer-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 16px;
    }
    .footer-tag {
      display: inline-flex;
      align-items: center;
      height: 28px;
      padding: 0 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.08);
      color: #CBD5E1;
      font-size: 12px;
    }
    .footer-title {
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      font-size: 14px;
      color: #94A3B8;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .footer-contact {
      font-size: 14px;
      color: #94A3B8;
      line-height: 2;
    }
    .footer-bottom {
      text-align: center;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      font-size: 12px;
      color: #64748B;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
      .faq-grid {
        grid-template-columns: 1fr;
        gap: 12px;
      }
    }

    @media (max-width: 768px) {
      .site-header,
      .header-inner {
        height: 56px;
      }
      .header-inner {
        padding-top: 0;
        padding-bottom: 0;
      }
      .main-nav {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .search-box {
        display: none;
      }
      .header-right .btn {
        display: none;
      }
      .page-hero {
        padding: 56px 20px;
        min-height: auto;
      }
      .page-hero h1 {
        font-size: 26px;
      }
      .section {
        padding: 64px 0;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .cta-band {
        padding: 40px 24px;
        border-radius: 16px;
      }
      .cta-band h2 {
        font-size: 22px;
      }
      .feature-image img {
        height: 240px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding-left: 16px;
        padding-right: 16px;
      }
      .page-hero h1 {
        font-size: 22px;
      }
      .section-title {
        font-size: 24px;
      }
      .brand-text {
        font-size: 15px;
      }
      .brand-icon {
        width: 28px;
        height: 28px;
        border-radius: 8px;
      }
    }

/* roulang page: article */
:root {
            --primary: #2E6BFF;
            --primary-hover: #1E4FC4;
            --primary-light: #EAF1FF;
            --primary-soft: #D6E4FF;
            --accent: #F5A623;
            --accent-light: #FFF7E0;
            --bg-base: #F0F5FA;
            --text-main: #1E293B;
            --text-sub: #64748B;
            --text-weak: #94A3B8;
            --border-card: #E2E8F0;
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 4px 20px rgba(30, 41, 59, 0.06);
            --shadow-card-hover: 0 12px 32px rgba(30, 41, 59, 0.12);
            --shadow-primary: 0 4px 14px rgba(46, 107, 255, 0.35);
            --transition: 0.2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--bg-base);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 32px;
            }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 64px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-card);
        }

        .header-inner {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            transition: transform var(--transition);
        }

        .brand:hover .brand-icon {
            transform: rotate(-4deg) scale(1.04);
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            color: var(--text-sub);
            font-weight: 500;
            transition: all var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-toggle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .search-toggle:hover {
            background: var(--primary-soft);
            transform: translateY(-1px);
        }

        .search-toggle:focus-visible,
        .menu-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .search-box {
            display: none;
            position: absolute;
            top: 58px;
            right: 0;
            z-index: 120;
            width: 240px;
        }

        .search-box.open {
            display: block;
        }

        .search-box input {
            width: 100%;
            height: 44px;
            border: 2px solid var(--primary);
            border-radius: 12px;
            padding: 0 16px;
            font-size: 14px;
            background: #fff;
            box-shadow: 0 8px 24px rgba(30, 41, 59, 0.14);
            transition: box-shadow var(--transition);
        }

        .search-box input:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(46, 107, 255, 0.12);
        }

        .search-box input::placeholder {
            color: var(--text-weak);
        }

        .nav-cta {
            display: none;
            align-items: center;
            gap: 6px;
            height: 40px;
            padding: 0 22px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            box-shadow: var(--shadow-primary);
            transition: all var(--transition);
        }

        .nav-cta:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(46, 107, 255, 0.4);
        }

        .menu-toggle {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 10px;
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--text-main);
            transition: all .3s ease;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
            .nav-cta {
                display: inline-flex;
            }
            .menu-toggle {
                display: none;
            }
        }

        .mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 99;
            background: #fff;
            padding: 24px 20px 32px;
            box-shadow: 0 16px 40px rgba(30, 41, 59, 0.12);
            transform: translateY(-16px);
            opacity: 0;
            pointer-events: none;
            transition: all .25s ease;
        }

        .mobile-menu.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 20px;
        }

        .mobile-nav-link {
            display: block;
            padding: 14px 12px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
        }

        .mobile-nav-link:hover,
        .mobile-nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-cta {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 16px;
            box-shadow: var(--shadow-primary);
        }

        /* ===== Article Page ===== */
        .article-page {
            padding: 32px 0 72px;
        }

        @media (min-width: 1024px) {
            .article-page {
                padding: 44px 0 96px;
            }
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-sub);
        }

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

        .breadcrumb .sep {
            color: #CBD5E1;
        }

        .breadcrumb .current {
            color: var(--text-sub);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-header {
            max-width: 760px;
            margin: 0 auto 28px;
        }

        .article-header h1 {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: .5px;
        }

        @media (min-width: 768px) {
            .article-header h1 {
                font-size: 30px;
            }
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-weak);
        }

        .article-meta .dot {
            color: #CBD5E1;
        }

        .article-meta .cat {
            color: var(--primary);
            background: var(--primary-light);
            padding: 2px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-main);
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-card);
            padding: 28px 24px;
        }

        @media (min-width: 768px) {
            .article-body {
                padding: 40px 44px;
            }
        }

        .article-body h2 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.4;
            margin-top: 40px;
            margin-bottom: 16px;
        }

        .article-body h2::before {
            content: '';
            display: block;
            width: 32px;
            height: 4px;
            border-radius: 2px;
            background: var(--primary);
            margin-bottom: 12px;
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-top: 32px;
            margin-bottom: 12px;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em 24px;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 6px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            border-radius: 8px;
            padding: 16px 20px;
            margin: 1.5em 0;
            color: var(--text-sub);
        }

        .article-body img {
            border-radius: 12px;
            border: 1px solid var(--border-card);
            margin: 24px 0 12px;
            height: auto;
        }

        .article-body figure {
            margin: 24px 0;
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--text-weak);
            text-align: center;
            margin-top: 8px;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }

        .article-body table th {
            background: var(--primary-light);
            font-weight: 600;
            text-align: left;
            padding: 12px 14px;
            border: 1px solid var(--border-card);
        }

        .article-body table td {
            padding: 12px 14px;
            border: 1px solid var(--border-card);
        }

        .article-body table tr:nth-child(even) td {
            background: #FAFCFF;
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border-card);
            margin: 32px 0;
        }

        /* ===== Not Found ===== */
        .not-found-panel {
            text-align: center;
            padding: 72px 24px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 18px;
        }

        .not-found-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            font-weight: 700;
        }

        .not-found-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
        }

        /* ===== Buttons ===== */
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 44px;
            padding: 0 28px;
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-btn);
            color: var(--primary);
            font-size: 15px;
            font-weight: 500;
            background: #fff;
            transition: all var(--transition);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(46, 107, 255, 0.12);
        }

        .btn-outline:focus-visible,
        .nav-cta:focus-visible,
        .mobile-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Related Section ===== */
        .related-section {
            max-width: 1040px;
            margin: 48px auto 0;
        }

        .related-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .related-desc {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 28px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--border-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
        }

        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .related-card-link {
            display: block;
            height: 100%;
        }

        .related-card-img {
            width: 100%;
            height: 112px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-card);
        }

        .related-card-body {
            padding: 14px 16px 16px;
        }

        .related-card-title {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
            margin-bottom: 10px;
            transition: color var(--transition);
        }

        .related-card-link:hover .related-card-title {
            color: var(--primary);
        }

        .related-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }

        .related-card-date {
            font-size: 12px;
            color: var(--text-weak);
        }

        .related-card-more {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
        }

        .back-entry {
            max-width: 760px;
            margin: 32px auto 0;
            text-align: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #1E293B;
            color: #CBD5E1;
            padding: 56px 0 0;
            margin-top: 64px;
        }

        @media (min-width: 768px) {
            .site-footer {
                padding-top: 72px;
            }
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
                gap: 48px;
            }
        }

        .footer-brand .brand {
            color: #fff;
        }

        .footer-brand .brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-brand-desc {
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            margin-bottom: 16px;
        }

        .footer-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-tag {
            font-size: 12px;
            color: #94A3B8;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4px 12px;
            border-radius: 999px;
        }

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

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

        .footer-links a {
            font-size: 14px;
            color: #94A3B8;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-contact {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.9;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            padding: 20px 0;
            font-size: 12px;
            color: #94A3B8;
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 16px;
            }
            .article-body {
                padding: 24px 18px;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .related-section {
                margin-top: 36px;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #2E6BFF;
    --primary-hover: #1E4FC4;
    --primary-light: #EAF1FF;
    --primary-soft: #D6E4FF;
    --accent: #F5A623;
    --accent-light: #FFF7E0;
    --bg-base: #F0F5FA;
    --text-main: #1E293B;
    --text-sub: #64748B;
    --text-weak: #94A3B8;
    --border-card: #E2E8F0;
    --border-input: #CBD5E1;
    --shadow-card: 0 4px 20px rgba(30,41,59,0.06);
    --shadow-card-hover: 0 12px 32px rgba(30,41,59,0.12);
    --shadow-btn: 0 4px 14px rgba(46,107,255,0.35);
    --radius-card: 16px;
    --radius-btn: 12px;
    --radius-md: 12px;
    --radius-pill: 999px;
    --space-section: 96px;
    --space-section-mobile: 64px;
    --container-max: 1280px;
    --transition: 0.2s ease;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
    background: var(--bg-base);
    color: var(--text-main);
    line-height: 1.8;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
  }

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

  img {
    max-width: 100%;
    display: block;
    border-radius: 12px;
  }

  input,
  button {
    font-family: inherit;
  }

  button {
    cursor: pointer;
  }

  .container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
  }

  @media (min-width: 1024px) {
    .container {
      padding: 0 32px;
    }
  }

  /* ===== Header / Nav ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: 64px;
    background: linear-gradient(to right, rgba(255,255,255,0.92), rgba(234,241,255,0.92));
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(226,232,240,0.8);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 20px;
  }

  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(46,107,255,0.25);
  }

  .brand-text {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    letter-spacing: 0.01em;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 16px;
    border-radius: 999px;
    font-size: 15px;
    color: var(--text-sub);
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
  }

  .nav-link:hover {
    color: var(--primary);
    background: rgba(46,107,255,0.06);
  }

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

  .header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-btn);
  }

  .btn-primary:hover {
    background: var(--primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46,107,255,0.4);
  }

  .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(46,107,255,0.3);
  }

  .btn-primary:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
  }

  .btn-accent {
    background: var(--accent);
    color: #1E293B;
    box-shadow: 0 4px 14px rgba(245,166,35,0.3);
  }

  .btn-accent:hover {
    background: #e09516;
    color: #1E293B;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(245,166,35,0.35);
  }

  .btn-accent:active {
    transform: translateY(0);
  }

  .btn-lg {
    height: 52px;
    padding: 0 36px;
    font-size: 16px;
    border-radius: 14px;
  }

  .btn-sm {
    height: 40px;
    padding: 0 20px;
    font-size: 14px;
  }

  .search-toggle,
  .menu-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-light);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: all 0.2s ease;
  }

  .search-toggle:hover,
  .menu-toggle:hover {
    background: var(--primary-soft);
    color: var(--primary-hover);
  }

  .header-search {
    position: relative;
    display: flex;
    align-items: center;
  }

  .search-trigger {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-light);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: all 0.2s ease;
  }

  .search-trigger:hover {
    background: var(--primary-soft);
    color: var(--primary-hover);
  }

  .search-panel {
    position: absolute;
    right: 44px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    opacity: 0;
    overflow: hidden;
    transition: width 0.25s ease, opacity 0.2s ease;
  }

  .header-search.open .search-panel {
    width: 220px;
    opacity: 1;
  }

  .search-panel input {
    width: 100%;
    height: 40px;
    border: 1px solid var(--border-input);
    border-radius: var(--radius-md);
    padding: 0 14px;
    font-size: 14px;
    background: #fff;
    color: var(--text-main);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
  }

  .search-panel input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(46,107,255,0.12);
  }

  .search-panel input::placeholder {
    color: var(--text-weak);
  }

  /* ===== Mobile Menu ===== */
  .mobile-menu {
    display: none;
    position: fixed;
    inset: 64px 0 0 0;
    background: #fff;
    z-index: 90;
    padding: 32px 24px 40px;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
  }

  .mobile-menu.open {
    display: flex;
  }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .mobile-nav-link {
    display: block;
    width: 100%;
    padding: 16px 20px;
    border-radius: 14px;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    background: var(--bg-base);
    transition: all 0.2s ease;
  }

  .mobile-nav-link:hover {
    background: var(--primary-light);
    color: var(--primary);
  }

  .mobile-nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
  }

  /* ===== Section ===== */
  .section {
    padding: var(--space-section-mobile) 0;
  }

  @media (min-width: 768px) {
    .section {
      padding: var(--space-section) 0;
    }
  }

  .section-alt {
    background: #fff;
  }

  .section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
  }

  .section-head-left {
    text-align: left;
    margin: 0 0 40px;
  }

  .kicker {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 999px;
    padding: 6px 16px;
    margin-bottom: 14px;
  }

  .section-head h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.35;
    color: var(--text-main);
    letter-spacing: -0.02em;
  }

  @media (min-width: 768px) {
    .section-head h2 {
      font-size: 32px;
    }
  }

  .section-head p {
    font-size: 14px;
    color: var(--text-sub);
    margin-top: 12px;
  }

  /* ===== Page Hero ===== */
  .page-hero {
    position: relative;
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    overflow: hidden;
  }

  .page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(234, 241, 255, 0.82);
  }

  .page-hero::after {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(46,107,255,0.14), transparent 70%);
    pointer-events: none;
  }

  .page-hero-content {
    position: relative;
    z-index: 2;
    padding: 60px 20px;
    max-width: 720px;
  }

  .page-hero h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-main);
    letter-spacing: -0.02em;
    margin-bottom: 14px;
  }

  @media (min-width: 768px) {
    .page-hero h1 {
      font-size: 36px;
    }
  }

  .page-hero p {
    font-size: 15px;
    color: #475569;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.8;
  }

  /* ===== Timeline ===== */
  .timeline-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  @media (min-width: 768px) {
    .timeline-row {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .timeline-row {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .timeline-item {
    position: relative;
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-card);
    padding: 28px 24px 24px;
    box-shadow: var(--shadow-card);
    transition: all 0.2s ease;
  }

  .timeline-item:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
  }

  .timeline-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 5px rgba(46,107,255,0.12);
    margin-bottom: 18px;
    display: block;
  }

  .timeline-status {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    border-radius: 999px;
    padding: 3px 12px;
    margin-bottom: 12px;
  }

  .timeline-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
  }

  .timeline-item p {
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.7;
  }

  @media (min-width: 1024px) {
    .timeline-item:not(:last-child)::after {
      content: '';
      position: absolute;
      top: 34px;
      right: -22px;
      width: 24px;
      height: 2px;
      background-image: linear-gradient(to right, var(--primary-soft), var(--primary-light));
      border-top: 2px dashed #B8C9EE;
      z-index: 0;
    }
  }

  /* ===== Reward Cards ===== */
  .reward-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  @media (min-width: 1024px) {
    .reward-grid {
      grid-template-columns: 1.15fr 1fr;
      gap: 32px;
      align-items: stretch;
    }
  }

  .reward-card-main {
    background: var(--primary-light);
    border: 1px solid rgba(46,107,255,0.12);
    border-radius: 20px;
    padding: 40px 36px;
    position: relative;
    overflow: hidden;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: 0 8px 28px rgba(46,107,255,0.08);
  }

  .reward-card-main::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(46,107,255,0.12), transparent 70%);
    border-radius: 50%;
  }

  .reward-card-main .reward-icon-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    color: var(--accent);
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    margin-bottom: 24px;
    width: fit-content;
  }

  .reward-card-main h3 {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.35;
    margin-bottom: 12px;
  }

  .reward-card-main p {
    font-size: 14px;
    color: #475569;
    line-height: 1.8;
    max-width: 380px;
  }

  .reward-card-main img {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 200px;
    height: auto;
    object-fit: cover;
    opacity: 0.15;
    border-radius: 0;
    pointer-events: none;
  }

  .reward-card-main .btn {
    margin-top: 24px;
    width: fit-content;
  }

  .reward-col {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  @media (min-width: 768px) and (max-width: 1023px) {
    .reward-col {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
    }
  }

  .reward-card-mini {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: 16px;
    padding: 24px 24px;
    box-shadow: var(--shadow-card);
    transition: all 0.2s ease;
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .reward-card-mini:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
  }

  .reward-mini-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    margin-bottom: 16px;
  }

  .reward-card-mini h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
  }

  .reward-card-mini p {
    font-size: 13px;
    color: var(--text-sub);
    line-height: 1.7;
    flex: 1;
  }

  .reward-card-mini .reward-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-top: 14px;
  }

  /* ===== Rules ===== */
  .rules-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: center;
  }

  @media (min-width: 1024px) {
    .rules-grid {
      grid-template-columns: 1.2fr 0.8fr;
      gap: 56px;
    }
  }

  .rules-card {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: 20px;
    padding: 36px 32px;
    box-shadow: var(--shadow-card);
  }

  .rules-card h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-main);
    margin: 6px 0 20px;
  }

  .rules-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .rules-list li {
    position: relative;
    padding-left: 32px;
    font-size: 15px;
    color: var(--text-sub);
    line-height: 1.7;
  }

  .rules-list li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 4px rgba(46,107,255,0.12);
  }

  .rules-note {
    text-align: center;
  }

  .rules-note img {
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    margin-bottom: 18px;
    width: 100%;
    height: auto;
  }

  .rules-note p {
    font-size: 13px;
    color: var(--text-weak);
    max-width: 280px;
    margin: 0 auto;
    line-height: 1.7;
  }

  /* ===== CTA Band ===== */
  .cta-band {
    background: linear-gradient(135deg, #2E6BFF 0%, #1E4FC4 100%);
    padding: 64px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .cta-band::before {
    content: '';
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
    top: -160px;
    left: -100px;
  }

  .cta-band::after {
    content: '';
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    bottom: -120px;
    right: -80px;
  }

  .cta-band .container {
    position: relative;
    z-index: 2;
  }

  .cta-band h2 {
    font-size: 30px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
  }

  @media (min-width: 768px) {
    .cta-band h2 {
      font-size: 36px;
    }
  }

  .cta-band p {
    font-size: 15px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 28px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
  }

  .cta-band .btn-accent {
    height: 52px;
    padding: 0 42px;
    font-size: 16px;
    border-radius: 14px;
  }

  /* ===== FAQ ===== */
  .faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 860px;
    margin: 0 auto;
  }

  @media (min-width: 1024px) {
    .faq-grid {
      grid-template-columns: 1fr 1fr;
      gap: 24px 20px;
    }
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border-card);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: box-shadow 0.25s ease;
    height: fit-content;
  }

  .faq-item:hover {
    box-shadow: var(--shadow-card-hover);
  }

  .faq-item summary {
    padding: 20px 22px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    outline: none;
    transition: color 0.2s ease;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary::after {
    content: '+';
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 600;
    transition: transform 0.25s ease, background 0.25s ease;
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
    background: var(--primary);
    color: #fff;
  }

  .faq-item[open] summary {
    color: var(--primary);
  }

  .faq-item .faq-answer {
    padding: 0 22px 20px;
    font-size: 14px;
    color: var(--text-sub);
    line-height: 1.8;
    border-top: 1px dashed var(--border-card);
    margin-top: 2px;
    padding-top: 14px;
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #1E293B;
    color: #CBD5E1;
    padding: 72px 0 0;
    font-size: 14px;
    line-height: 1.7;
  }

  .site-footer a {
    color: #CBD5E1;
    text-decoration: none;
    transition: color 0.2s ease;
  }

  .site-footer a:hover {
    color: #fff;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 48px;
  }

  @media (min-width: 768px) {
    .footer-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
  }

  @media (min-width: 1024px) {
    .footer-grid {
      grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
      gap: 40px;
    }
  }

  .footer-brand .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
  }

  .footer-brand .brand-text {
    color: #fff;
  }

  .footer-brand-desc {
    font-size: 14px;
    color: #94A3B8;
    margin: 20px 0 18px;
    max-width: 320px;
  }

  .footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .footer-tag {
    display: inline-block;
    background: rgba(255,255,255,0.08);
    border-radius: 999px;
    padding: 4px 14px;
    font-size: 12px;
    color: #CBD5E1;
  }

  .footer-title {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
  }

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

  .footer-contact {
    font-size: 14px;
    color: #94A3B8;
    line-height: 2;
    margin: 0;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 12px;
    color: #94A3B8;
    letter-spacing: 0.02em;
  }

  /* ===== Responsive ===== */
  @media (max-width: 1023px) {
    .main-nav {
      display: none;
    }

    .site-header {
      height: 56px;
    }

    .header-inner {
      height: 56px;
    }

    .brand-icon {
      width: 34px;
      height: 34px;
    }

    .brand-text {
      font-size: 15px;
    }

    .search-toggle {
      display: inline-flex;
    }
  }

  @media (min-width: 1024px) {
    .search-toggle {
      display: none;
    }
  }

  @media (max-width: 520px) {
    .section {
      padding: 48px 0;
    }

    .section-head {
      margin-bottom: 32px;
    }

    .section-head h2 {
      font-size: 24px;
    }

    .page-hero h1 {
      font-size: 26px;
    }

    .page-hero p {
      font-size: 14px;
    }

    .reward-card-main {
      padding: 32px 24px;
      min-height: auto;
    }

    .reward-card-main h3 {
      font-size: 21px;
    }

    .rules-card {
      padding: 28px 20px;
    }

    .cta-band {
      padding: 48px 0;
    }

    .cta-band h2 {
      font-size: 24px;
    }

    .btn-lg {
      height: 48px;
      padding: 0 28px;
      font-size: 15px;
    }

    .timeline-row {
      grid-template-columns: 1fr;
    }
  }

/* roulang page: category3 */
:root {
  --primary: #2E6BFF;
  --primary-hover: #1E4FC4;
  --primary-light: #EAF1FF;
  --primary-soft: #D6E4FF;
  --accent: #F5A623;
  --accent-light: #FFF7E0;
  --bg-base: #F0F5FA;
  --text-main: #1E293B;
  --text-sub: #64748B;
  --text-muted: #94A3B8;
  --border-card: #E2E8F0;
  --border-input: #CBD5E1;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(30, 41, 59, 0.06);
  --shadow-hover: 0 12px 32px rgba(30, 41, 59, 0.12);
  --shadow-btn: 0 4px 14px rgba(46, 107, 255, 0.35);
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", sans-serif;
  background: var(--bg-base);
  color: var(--text-main);
  font-size: 15px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input {
  font-family: inherit;
  font-size: 14px;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

@media (min-width: 768px) {
  .container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

.section {
  padding: 64px 0;
}

@media (min-width: 1024px) {
  .section {
    padding: 96px 0;
  }
}

.section-head {
  max-width: 760px;
  margin: 0 auto 44px;
  text-align: center;
}

.section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-main);
}

@media (min-width: 768px) {
  .section-title {
    font-size: 32px;
  }
}

.section-desc {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  border: 1.5px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn:focus-visible,
.nav-link:focus-visible,
.faq-question:focus-visible,
.search-toggle:focus-visible,
.menu-toggle:focus-visible,
.subscribe-input:focus-visible,
.search-input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(46, 107, 255, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: #1E293B;
  box-shadow: 0 4px 14px rgba(245, 166, 35, 0.3);
}

.btn-accent:hover {
  background: #F0B13C;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 166, 35, 0.4);
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 15px;
  border-radius: 12px;
}

.btn-lg {
  height: 52px;
  padding: 0 34px;
  font-size: 16px;
  border-radius: 14px;
}

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-card);
}

.site-header::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: -1px;
  width: 46%;
  background: linear-gradient(to right, rgba(234, 241, 255, 0), #EAF1FF);
  pointer-events: none;
  z-index: 0;
}

.header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: 16px;
}

@media (min-width: 768px) {
  .header-inner {
    height: 64px;
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(46, 107, 255, 0.25);
}

.brand-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .brand-text {
    font-size: 19px;
  }
}

.main-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
}

.main-nav.open {
  display: flex;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  background: #ffffff;
  padding: 24px 20px 36px;
  overflow-y: auto;
  gap: 6px;
  box-shadow: 0 16px 40px rgba(30, 41, 59, 0.12);
}

.main-nav .nav-link {
  display: block;
  padding: 14px 16px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  border-radius: 12px;
  transition: background var(--transition), color var(--transition);
}

.main-nav .nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.main-nav .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}

.mobile-nav-footer {
  display: none;
}

.main-nav.open .mobile-nav-footer {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border-card);
}

.main-nav.open .mobile-nav-footer .search-input {
  width: 100%;
}

.main-nav.open .mobile-nav-footer .btn {
  width: 100%;
  height: 48px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-wrap {
  position: relative;
}

.search-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition);
}

.search-toggle:hover {
  background: var(--primary-soft);
  transform: scale(1.03);
}

.search-box {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  width: 240px;
  padding: 10px;
  background: #ffffff;
  border: 1px solid var(--border-card);
  border-radius: 12px;
  box-shadow: var(--shadow-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
}

.search-box.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-input {
  width: 100%;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--border-input);
  border-radius: 12px;
  background: #fff;
  color: var(--text-main);
  font-size: 14px;
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(46, 107, 255, 0.12);
}

.nav-cta {
  display: none;
}

@media (min-width: 1024px) {
  .nav-cta {
    display: inline-flex;
  }
}

.menu-toggle {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  transition: background var(--transition);
}

.menu-toggle:hover {
  background: var(--primary-soft);
}

@media (min-width: 1024px) {
  .main-nav,
  .main-nav.open {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    box-shadow: none;
    padding: 0;
    gap: 8px;
    overflow: visible;
  }

  .main-nav .nav-link {
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-btn);
  }

  .mobile-nav-footer,
  .main-nav.open .mobile-nav-footer {
    display: none;
  }

  .menu-toggle {
    display: none;
  }
}

/* 分类页 Hero */
.page-hero {
  position: relative;
  padding: 64px 0 72px;
  text-align: center;
  overflow: hidden;
  background-color: #EAF1FF;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(234, 241, 255, 0.93) 0%, rgba(240, 245, 250, 0.88) 100%);
}

.page-hero .container {
  position: relative;
  z-index: 1;
  max-width: 840px;
}

.hero-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(46, 107, 255, 0.18);
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-main);
  letter-spacing: 0.01em;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 36px;
  }
}

.hero-sub {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-sub);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* FAQ */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 1024px) {
  .faq-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-hover);
}

.faq-item.open {
  border-color: rgba(46, 107, 255, 0.25);
  box-shadow: var(--shadow-hover);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 20px 22px;
  text-align: left;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text-main);
  border-radius: var(--radius-card);
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, background var(--transition), color var(--transition);
}

.faq-item.open .faq-icon {
  transform: rotate(135deg);
  background: var(--primary);
  color: #ffffff;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 22px 22px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-sub);
}

.faq-answer-inner p + p {
  margin-top: 12px;
}

/* 联系信息 */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

.contact-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #ffffff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 24px 22px;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}

.contact-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.contact-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
}

.contact-card p {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

.contact-banner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  background: #ffffff;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  align-items: center;
}

@media (min-width: 768px) {
  .contact-banner {
    grid-template-columns: 280px 1fr;
  }
}

.contact-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--primary-light);
}

@media (min-width: 768px) {
  .contact-image {
    height: 100%;
    min-height: 220px;
  }
}

.contact-banner-content {
  padding: 24px 24px 28px;
}

@media (min-width: 768px) {
  .contact-banner-content {
    padding: 32px 36px 32px 24px;
  }
}

.contact-banner-content h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
}

.contact-banner-content p {
  margin-top: 10px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.9;
  max-width: 520px;
}

.contact-banner-content .btn {
  margin-top: 18px;
}

/* 订阅 */
.subscribe-card {
  background: linear-gradient(135deg, #ffffff, #F5F9FF);
  border: 1px solid var(--border-card);
  border-radius: 20px;
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  box-shadow: var(--shadow-card);
}

@media (min-width: 768px) {
  .subscribe-card {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 44px 48px;
  }
}

.subscribe-text h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
}

.subscribe-text p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 480px;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
  max-width: 460px;
}

@media (min-width: 768px) {
  .subscribe-form {
    flex-direction: row;
    gap: 0;
    width: auto;
    flex: 1;
    max-width: 460px;
  }
}

.subscribe-input {
  flex: 1;
  height: 48px;
  padding: 0 18px;
  border: 1px solid var(--border-input);
  border-radius: 12px;
  background: #ffffff;
  font-size: 14px;
  color: var(--text-main);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.subscribe-input::placeholder {
  color: var(--text-muted);
}

.subscribe-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(46, 107, 255, 0.12);
}

@media (min-width: 768px) {
  .subscribe-input {
    border-radius: 12px 0 0 12px;
  }

  .subscribe-form .btn {
    border-radius: 0 12px 12px 0;
    height: 48px;
    padding: 0 26px;
  }
}

.form-message {
  font-size: 13px;
  color: var(--primary);
  min-height: 20px;
  padding-left: 4px;
}

/* CTA 带 */
.cta-section {
  padding: 32px 0 96px;
}

@media (min-width: 1024px) {
  .cta-section {
    padding: 40px 0 96px;
  }
}

.cta-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1E293B 0%, #27354D 100%);
  border-radius: 24px;
  padding: 56px 32px;
  text-align: center;
  color: #ffffff;
}

.cta-band::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 107, 255, 0.35), transparent 70%);
  pointer-events: none;
}

.cta-band::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.2), transparent 70%);
  pointer-events: none;
}

.cta-band .container-fluid,
.cta-band > * {
  position: relative;
  z-index: 1;
}

.cta-band h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.5;
  max-width: 640px;
  margin: 0 auto 14px;
}

@media (min-width: 768px) {
  .cta-band h2 {
    font-size: 30px;
  }
}

.cta-sub {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 28px;
  letter-spacing: 1px;
}

/* 页脚 */
.site-footer {
  background: #1E293B;
  color: #CBD5E1;
  padding: 56px 0 0;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding-bottom: 40px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 32px;
  }
}

.footer-brand .brand {
  margin-bottom: 14px;
}

.footer-brand .brand-icon {
  width: 30px;
  height: 30px;
  border-radius: 9px;
}

.footer-brand .brand-text {
  color: #ffffff;
}

.footer-brand-desc {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.9;
  margin-top: 12px;
  max-width: 320px;
}

.footer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.footer-tag {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: #94A3B8;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  line-height: 1.5;
}

.footer-title {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  line-height: 1.5;
}

.footer-links li + li {
  margin-top: 10px;
}

.footer-links a {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.7;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-contact {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.9;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0 28px;
  text-align: center;
  font-size: 12px;
  color: #94A3B8;
  line-height: 1.9;
  margin-top: 8px;
}

@media (min-width: 1024px) {
  .footer-bottom {
    margin-top: 16px;
  }
}

/* 移动端首屏安全 */
@media (max-width: 1023px) {
  .header-actions .search-wrap {
    display: none;
  }

  .main-nav.open .mobile-nav-footer .search-wrap {
    display: block;
  }

  .main-nav.open .search-input {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .brand-text {
    font-size: 16px;
  }

  .hero-title {
    font-size: 30px;
  }

  .section-title {
    font-size: 26px;
  }

  .cta-band {
    padding: 44px 20px;
  }

  .cta-band h2 {
    font-size: 23px;
  }

  .contact-card {
    padding: 20px 18px;
  }

  .faq-question {
    padding: 18px 18px;
  }

  .faq-answer-inner {
    padding: 0 18px 20px;
  }

  .subscribe-card {
    padding: 28px 20px;
  }
}