/* roulang page: index */
:root {
    --bg: #080A11;
    --bg-section: #0E111B;
    --card: #141926;
    --card-hover: #1B2233;
    --card-border: rgba(148,163,184,0.14);
    --brand-violet: #8B5CF6;
    --brand-purple: #7C3AED;
    --brand-magenta: #DB2777;
    --brand-pink: #EC4899;
    --accent: #22D3EE;
    --text-strong: #F8FAFC;
    --text-body: #CBD2E0;
    --text-muted: #94A3B8;
    --radius-card: 20px;
    --radius-lg: 28px;
    --shadow-card: 0 6px 24px rgba(0,0,0,0.28);
    --shadow-hover: 0 16px 36px rgba(109,40,217,0.18), 0 4px 12px rgba(34,211,238,0.06);
    --gradient-main: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
  }
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    background: var(--bg);
    color: var(--text-body);
    font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
  }
  img {
    display: block;
    max-width: 100%;
    object-fit: cover;
  }
  button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    outline: none;
  }
  .container {
    max-width: 1320px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 32px;
    padding-right: 32px;
  }
  .container-lg {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 32px;
    padding-right: 32px;
  }
  .site-header {
    position: relative;
    z-index: 50;
    background: rgba(8,10,17,0.92);
    border-bottom: 1px solid rgba(148,163,184,0.08);
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    position: relative;
  }
  .logo-home {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 2;
  }
  .logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 900;
    color: #fff;
    box-shadow: 0 0 22px rgba(124,58,237,0.45);
    font-variant-numeric: tabular-nums;
  }
  .logo-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-strong);
    letter-spacing: 1px;
    white-space: nowrap;
  }
  .logo-text em {
    font-style: normal;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .nav-group-left, .nav-group-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
  }
  .nav-group-right {
    justify-content: flex-end;
  }
  .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-body);
    white-space: nowrap;
    position: relative;
    transition: color 0.25s ease, background 0.25s ease;
  }
  .nav-link:hover {
    color: var(--text-strong);
    background: rgba(255,255,255,0.04);
  }
  .nav-link.active {
    color: var(--text-strong);
    font-weight: 600;
  }
  .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 18px;
    right: 18px;
    height: 2px;
    border-radius: 2px;
    background: var(--gradient-main);
  }
  .nav-cta {
    margin-left: 8px;
  }
  .menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255,255,255,0.14);
    border-radius: 12px;
    background: rgba(255,255,255,0.04);
    color: var(--text-strong);
    justify-content: center;
    align-items: center;
    font-size: 22px;
    cursor: pointer;
    z-index: 3;
  }
  .mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: #0A0D16;
    z-index: 90;
    padding: 100px 28px 40px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }
  .mobile-menu.open {
    display: block;
    opacity: 1;
    visibility: visible;
  }
  .mobile-menu a.mobile-link {
    display: block;
    padding: 16px 18px;
    border-radius: 14px;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-strong);
    background: var(--card);
    margin-bottom: 12px;
    border: 1px solid rgba(255,255,255,0.08);
  }
  .mobile-menu a.mobile-link.active {
    background: linear-gradient(135deg, rgba(124,58,237,0.25), rgba(219,39,119,0.2));
    border-color: rgba(139,92,246,0.4);
  }
  .mobile-close {
    position: absolute;
    top: 20px;
    right: 20px;
    color: var(--text-strong);
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.14);
    background: rgba(255,255,255,0.04);
    cursor: pointer;
  }
  /* Hero */
  .hero-section {
    position: relative;
    min-height: max(660px, 88vh);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 80px 0;
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    z-index: -2;
  }
  .hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(8,10,17,0.95) 0%, rgba(14,17,27,0.78) 45%, rgba(8,10,17,0.55) 100%);
  }
  .hero-content {
    max-width: 640px;
    padding: 40px 0;
  }
  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(139,92,246,0.15);
    border: 1px solid rgba(139,92,246,0.3);
    border-radius: 999px;
    padding: 7px 18px;
    font-size: 13px;
    font-weight: 600;
    color: var(--brand-violet);
    margin-bottom: 24px;
  }
  .hero-badge i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
  }
  .hero-title {
    font-size: clamp(38px, 5vw, 64px);
    line-height: 1.12;
    font-weight: 900;
    color: var(--text-strong);
    letter-spacing: -1px;
    margin-bottom: 22px;
  }
  .hero-title .grad {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .hero-sub {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-body);
    margin-bottom: 32px;
    max-width: 540px;
  }
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border-radius: 14px;
    padding: 14px 30px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
  }
  .btn-primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 0 4px 18px rgba(124,58,237,0.35);
  }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(219,39,119,0.3), 0 4px 18px rgba(124,58,237,0.4);
  }
  .btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 10px rgba(124,58,237,0.3);
  }
  .btn-primary:focus-visible, .btn-secondary:focus-visible, .btn-light:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
  .btn-secondary {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-strong);
  }
  .btn-secondary:hover {
    border-color: rgba(255,255,255,0.5);
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
  }
  .btn-light {
    background: #fff;
    color: #0E111B;
    font-weight: 700;
  }
  .btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
  }
  .btn-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
  }
  .hero-stats {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    align-items: center;
  }
  .stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .stat-value {
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    color: var(--text-strong);
    font-variant-numeric: tabular-nums;
    letter-spacing: -1px;
  }
  .stat-value .val-num {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .stat-label {
    font-size: 13px;
    color: var(--text-muted);
  }
  .section-block {
    padding: 96px 0;
  }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
    margin-bottom: 48px;
    flex-wrap: wrap;
  }
  .section-title-wrap {
    max-width: 720px;
  }
  .section-title {
    font-size: clamp(28px, 3.4vw, 40px);
    font-weight: 800;
    color: var(--text-strong);
    line-height: 1.25;
    margin-bottom: 12px;
  }
  .section-desc {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.75;
  }
  .view-all {
    color: var(--accent);
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid transparent;
  }
  .view-all:hover {
    border-bottom-color: var(--accent);
  }
  /* ---------- grid cards ---------- */
  .grid-4 {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }
  .grid-3 {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
  .grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
  .card {
    background: var(--card);
    border: 1px solid rgba(148,163,184,0.12);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
  }
  .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(139,92,246,0.35);
  }
  .card-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #1C2230;
    position: relative;
  }
  .card-image img {
    width: 100%;
    height: 100%;
    transition: transform 0.5s ease;
  }
  .card:hover .card-image img {
    transform: scale(1.04);
  }
  .card-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: linear-gradient(135deg, rgba(124,58,237,0.9), rgba(219,39,119,0.9));
    padding: 4px 12px;
    border-radius: 999px;
    color: #fff;
    font-size: 12px;
    font-weight: 600;
  }
  .card-tag.tag-accent {
    background: rgba(34,211,238,0.2);
    border: 1px solid rgba(34,211,238,0.5);
    color: #a5f5ff;
  }
  .card-body {
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
  }
  .card-title {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-strong);
  }
  .card-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 10px;
  }
  .price {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-strong);
    font-variant-numeric: tabular-nums;
  }
  .price span {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    margin-right: 2px;
  }
  .buy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(139,92,246,0.14);
    border: 1px solid transparent;
    color: var(--brand-violet);
    font-weight: 700;
    font-size: 14px;
    border-radius: 10px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.25s ease;
  }
  .buy-btn:hover {
    background: var(--gradient-main);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(139,92,246,0.4);
  }
  /* feature panes */
  .pane-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
  }
  .pane-text {
    grid-column: span 5;
  }
  .pane-visual {
    grid-column: span 7;
  }
  .pane-card {
    background: var(--bg-section);
    border: 1px solid rgba(148,163,184,0.1);
    border-radius: var(--radius-lg);
    padding: 28px;
  }
  .pane-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 8px;
  }
  /* services / values */
  .features-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }
  .feature-item {
    background: var(--card);
    border: 1px solid rgba(148,163,184,0.1);
    border-radius: var(--radius-card);
    padding: 30px 24px;
    transition: border-color .3s ease, transform .3s ease;
  }
  .feature-item:hover {
    transform: translateY(-4px);
    border-color: rgba(139,92,246,0.4);
  }
  .feature-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    background: var(--gradient-main);
    margin-bottom: 18px;
  }
  .feature-icon.ic-cyan {
    background: linear-gradient(135deg, #0891B2, #22D3EE);
  }
  .feature-icon.ic-purple-soft {
    background: linear-gradient(135deg, #6D28D9, #A78BFA);
  }
  .feature-icon.ic-magenta-soft {
    background: linear-gradient(135deg, #BE185D, #F472B6);
  }
  .feature-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-strong);
    margin-bottom: 8px;
  }
  .feature-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
  }
  /* guarantee bar */
  .guarantee-section {
    border-top: 1px solid rgba(148,163,184,0.08);
    border-bottom: 1px solid rgba(148,163,184,0.08);
    padding: 32px 0;
    background: var(--bg-section);
  }
  .guarantee-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .g-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px;
  }
  .g-icon {
    min-width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(139,92,246,0.12);
    border: 1px solid rgba(139,92,246,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--brand-violet);
  }
  .g-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-strong);
    line-height: 1.3;
  }
  .g-desc {
    font-size: 13px;
    color: var(--text-muted);
  }
  /* testimonial */
  .testimonial-section {
    background: var(--bg-section);
    position: relative;
    overflow: hidden;
  }
  .quote-card {
    background: var(--card);
    border: 1px solid rgba(148,163,184,0.12);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: transform .3s ease, box-shadow .3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  .stars {
    color: #FBBF24;
    font-size: 16px;
    letter-spacing: 3px;
    margin-bottom: 14px;
  }
  .quote-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-body);
    flex: 1;
  }
  .quote-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #fff;
    font-size: 17px;
  }
  .quote-person {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
  }
  .quote-name {
    font-weight: 700;
    color: var(--text-strong);
    font-size: 14px;
  }
  .quote-role {
    font-size: 12px;
    color: var(--text-muted);
  }
  /* events band */
  .events-band {
    background: var(--bg-section);
    border-top: 1px solid rgba(148,163,184,0.07);
  }
  /* info list */
  .list-card {
    background: var(--card);
    border-radius: 16px;
    padding: 22px 24px;
    border: 1px solid rgba(148,163,184,0.1);
    display: flex;
    gap: 20px;
    align-items: center;
    transition: transform .25s ease, border-color .25s ease;
  }
  .list-card:hover {
    transform: translateX(4px);
    border-color: rgba(139,92,246,0.5);
  }
  .list-thumb {
    width: 72px;
    height: 72px;
    border-radius: 14px;
    overflow: hidden;
    flex-shrink: 0;
  }
  .list-content {
    flex: 1;
    min-width: 0;
  }
  .list-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-strong);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .list-excerpt {
    font-size: 13px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 4px;
  }
  .list-meta {
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
  }
  .list-cat {
    background: rgba(139,92,246,0.15);
    padding: 2px 10px;
    border-radius: 999px;
    color: var(--brand-violet);
    font-weight: 600;
    font-size: 12px;
  }
  .info-grid-two {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 24px;
  }
  .empty-tip {
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
    border: 1px dashed rgba(148,163,184,0.3);
    border-radius: var(--radius-card);
    background: var(--card);
    font-size: 15px;
  }
  /* CTA banner */
  .cta-banner {
    border-radius: var(--radius-lg);
    background: var(--gradient-main);
    padding: 70px 60px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
  }
  .cta-banner .cover-deco {
    position: absolute;
    right: 20px;
    bottom: -30px;
    width: 280px;
    height: 200px;
    border-radius: 30px;
    background-image: url('/assets/images/coverpic/cover-7.png');
    background-size: cover;
    opacity: 0.35;
    transform: rotate(-8deg);
  }
  .cta-title {
    font-size: clamp(26px, 3vw, 38px);
    color: #fff;
    font-weight: 800;
    max-width: 570px;
    line-height: 1.3;
    position: relative;
    z-index: 1;
  }
  .cta-desc {
    margin-top: 10px;
    color: rgba(255,255,255,0.9);
    font-size: 16px;
    max-width: 540px;
    position: relative;
    z-index: 1;
  }
  .cta-banner .round-btn {
    background: #fff;
    color: #7C3AED;
    border-radius: 16px;
    padding: 16px 34px;
    font-weight: 800;
    box-shadow: 0 10px 26px rgba(0,0,0,0.25);
    position: relative;
    z-index: 2;
    transition: all .3s ease;
  }
  .cta-banner .round-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 34px rgba(0,0,0,0.35);
  }
  /* FAQ */
  .faq-wrap {
    max-width: 920px;
    margin: 48px auto 0;
  }
  .faq-item {
    background: var(--card);
    border: 1px solid rgba(148,163,184,0.12);
    border-radius: 18px;
    margin-bottom: 16px;
    overflow: hidden;
  }
  .faq-item[open] {
    border-color: rgba(139,92,246,0.4);
  }
  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    padding: 22px 26px;
    font-weight: 600;
    font-size: 17px;
    color: var(--text-strong);
    cursor: pointer;
    list-style: none;
  }
  .faq-question::-webkit-details-marker {
    display: none;
  }
  .faq-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(139,92,246,0.2);
    color: var(--brand-violet);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: transform .3s ease, background .3s ease;
  }
  .faq-item[open] .faq-icon {
    transform: rotate(45deg);
    background: rgba(219,39,119,0.3);
    color: #fff;
  }
  .faq-answer {
    padding: 0 26px 24px 26px;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
  }
  /* footer */
  .site-footer {
    background: #060810;
    padding: 72px 0 0;
    border-top: 1px solid rgba(148,163,184,0.08);
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2.2fr 1fr 1fr 1.6fr;
    gap: 48px;
    padding-bottom: 56px;
  }
  .footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-muted);
    margin-top: 18px;
    max-width: 380px;
  }
  .footer-heading {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-strong);
    margin-bottom: 20px;
  }
  .footer-links a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 7px 0;
    transition: color .25s ease;
  }
  .footer-links a:hover {
    color: var(--accent);
  }
  .footer-contact-item {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 14px;
    color: var(--text-muted);
    align-items: flex-start;
  }
  .footer-bottom {
    border-top: 1px solid rgba(148,163,184,0.1);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
  }
  .footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
  }
  /* process steps */
  .steps-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    position: relative;
  }
  .step-item {
    text-align: center;
    padding: 30px 18px;
    background: var(--card);
    border: 1px solid rgba(148,163,184,0.1);
    border-radius: var(--radius-card);
    position: relative;
  }
  .step-num {
    width: 42px;
    height: 42px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--gradient-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #fff;
    font-size: 18px;
    font-variant-numeric: tabular-nums;
  }
  /* media query */
  @media (min-width: 1025px) {
    .nav-group-left a:first-child { margin-left: -8px; }
  }
  @media (max-width: 1024px) {
    .nav-group-left, .nav-group-right {
      display: none;
    }
    .menu-btn {
      display: flex;
    }
    .header-inner {
      justify-content: space-between;
    }
    .logo-home {
      position: static;
      transform: none;
    }
    .cta-banner {
      flex-direction: column;
      padding: 50px 32px;
    }
    .grid-4 {
      grid-template-columns: repeat(2, 1fr);
    }
    .features-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .guarantee-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .grid-3, .grid-2, .info-grid-two, .pane-grid {
      grid-template-columns: 1fr;
    }
    .pane-text, .pane-visual {
      grid-column: span 1;
    }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }
    .steps-row {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  @media (max-width: 767px) {
    .container, .container-lg {
      padding-left: 20px;
      padding-right: 20px;
    }
    .section-block {
      padding: 60px 0;
    }
    .grid-4, .features-grid {
      grid-template-columns: 1fr;
    }
    .guarantee-grid {
      grid-template-columns: 1fr;
    }
    .hero-stats {
      gap: 18px;
    }
    .stat-value {
      font-size: 30px;
    }
    .btn {
      width: 100%;
    }
    .btn-group {
      flex-direction: column;
      width: 100%;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .footer-bottom {
      flex-direction: column;
      align-items: flex-start;
      text-align: left;
    }
    .mobile-menu {
      padding-top: 90px;
    }
  }
  @media (max-width: 480px) {
    .hero-title {
      font-size: 34px;
    }
    .grid-3 {
      grid-template-columns: 1fr;
    }
    .steps-row {
      grid-template-columns: 1fr;
    }
  }
  .text-grad {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  .text-accent {
    color: var(--accent);
  }
  .bg-section {
    background: var(--bg-section);
  }
  .card-border-hover:hover {
    border-color: rgba(34,211,238,0.4);
  }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root{
    --bg: #080A11;
    --bg-section: #0E111B;
    --card: #141926;
    --card-hover: #1B2233;
    --card-border: rgba(148,163,184,0.14);
    --brand-violet: #8B5CF6;
    --brand-purple: #7C3AED;
    --brand-magenta: #DB2777;
    --brand-pink: #EC4899;
    --accent: #22D3EE;
    --text-strong: #F8FAFC;
    --text-body: #CBD2E0;
    --text-muted: #94A3B8;
    --radius-card: 20px;
    --radius-large: 28px;
    --radius-control: 12px;
    --shadow-card: 0 6px 24px rgba(0,0,0,0.28);
    --shadow-hover: 0 16px 36px rgba(109,40,217,0.18);
    --grad: linear-gradient(135deg,#7C3AED 0%,#DB2777 100%);
    --grad-soft: linear-gradient(135deg,rgba(124,58,237,0.16) 0%,rgba(219,39,119,0.10) 100%);
    --ease: cubic-bezier(.22,.61,.36,1);
    --header-h: 80px;
    --container: 1320px;
    --gutter: 32px;
}

/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
    background:var(--bg);
    color:var(--text-body);
    font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    font-weight:400;
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .25s ease}
ul,ol{list-style:none}
button,input,textarea{font:inherit;color:inherit;background:none;border:none;outline:none}
.container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding-left:var(--gutter);
    padding-right:var(--gutter);
}
::selection{background:rgba(139,92,246,.35);color:#fff}

/* ===== 滚动条 ===== */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0a0d16}
::-webkit-scrollbar-thumb{background:#252d3e;border-radius:8px;border:2px solid #0a0d16}
::-webkit-scrollbar-thumb:hover{background:#384158}

/* ===== 基础排版 ===== */
h1,h2,h3,h4,h5,h6{color:var(--text-strong);font-weight:800;line-height:1.3;text-wrap:balance}
p{text-wrap:pretty}
.tnum{font-variant-numeric:tabular-nums}

/* ===== 辅助类 ===== */
.gradient-text{
    background:linear-gradient(135deg,#C084FC 0%,#F472B6 100%);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    color:transparent;
}
.section-wrap{padding:96px 0;position:relative;scroll-margin-top:60px}
.section-head{max-width:820px;margin-bottom:56px}
.section-eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--accent);
    font-size:14px;
    font-weight:600;
    letter-spacing:.12em;
    text-transform:uppercase;
    padding:6px 16px;
    background:rgba(34,211,238,.08);
    border:1px solid rgba(34,211,238,.2);
    border-radius:100px;
    margin-bottom:18px;
}
.section-title{font-size:clamp(30px,4vw,42px);line-height:1.25;letter-spacing:-.01em}
.section-desc{font-size:17px;color:var(--text-muted);line-height:1.8;margin-top:16px}

/* ===== 按钮 ===== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-weight:600;
    border-radius:var(--radius-control);
    transition:all .3s var(--ease);
    cursor:pointer;
    user-select:none;
    white-space:nowrap;
    position:relative;
    line-height:1.2;
    border:1px solid transparent;
}
.btn-primary{
    background:var(--grad);
    color:#fff;
    box-shadow:0 4px 18px rgba(124,58,237,.32), inset 0 0 0 1px rgba(255,255,255,.08);
    padding:14px 34px;
    font-size:16px;
}
.btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 30px rgba(124,58,237,.45), inset 0 0 0 1px rgba(255,255,255,.12);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 14px rgba(124,58,237,.3)}
.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(139,92,246,.45), 0 4px 18px rgba(124,58,237,.32)}
.btn-secondary{
    background:rgba(255,255,255,.04);
    border-color:rgba(203,213,225,.22);
    color:var(--text-strong);
    padding:13px 32px;
    font-size:16px;
    backdrop-filter:none;
}
.btn-secondary:hover{
    border-color:rgba(203,213,225,.6);
    color:#fff;
    background:rgba(255,255,255,.06);
    transform:translateY(-2px);
}
.btn-secondary:active{transform:translateY(0)}
.btn-secondary:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(148,163,184,.35)}
.btn-lg{padding:16px 44px;font-size:17px}
.btn-block{width:100%}
.btn-primary.disabled,.btn-primary:disabled{opacity:.5;pointer-events:none;box-shadow:none}

/* ===== Header 导航 ===== */
.site-header{
    position:fixed;
    top:0;left:0;right:0;
    height:var(--header-h);
    background:rgba(8,10,17,.88);
    z-index:999;
    border-bottom:1px solid transparent;
    transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
    background:rgba(8,10,17,.95);
    border-bottom-color:rgba(148,163,184,.08);
    box-shadow:0 4px 20px rgba(0,0,0,.3);
}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:100%;
    position:relative;
}
.nav-group-left,.nav-group-right{
    display:flex;
    align-items:center;
    gap:8px;
    z-index:2;
}
.nav-group-right{justify-content:flex-end}
.nav-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:8px 16px;
    font-size:15px;
    font-weight:500;
    color:var(--text-body);
    border-radius:10px;
    line-height:1.4;
    position:relative;
    transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.04)}
.nav-link.active{
    color:#fff;
    background:linear-gradient(135deg,rgba(124,58,237,.10),rgba(219,39,119,.10));
}
.nav-link.active::after{
    content:'';
    position:absolute;
    bottom:2px;
    left:16px;
    right:16px;
    height:2px;
    background:var(--grad);
    border-radius:2px;
}
.logo-home{
    position:absolute;
    left:50%;
    top:50%;
    transform:translate(-50%,-50%);
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:10px 14px;
    z-index:3;
    transition:opacity .2s;
}
.logo-home:hover{opacity:.9}
.logo-icon{
    width:38px;
    height:38px;
    border-radius:12px;
    background:var(--grad);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
    font-weight:900;
    color:#fff;
    box-shadow:0 4px 14px rgba(124,58,237,.4);
    flex:0 0 auto;
}
.logo-text{
    font-size:20px;
    font-weight:800;
    color:#fff;
    letter-spacing:-.01em;
    line-height:1.1;
}
.logo-text em{
    font-style:normal;
    background:linear-gradient(135deg,#C084FC,#F472B6);
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
}
.menu-btn{
    display:none;
    width:44px;
    height:44px;
    align-items:center;
    justify-content:center;
    border-radius:10px;
    color:var(--text-strong);
    cursor:pointer;
    background:transparent;
    transition:background .2s;
}
.menu-btn:hover{background:rgba(255,255,255,.06)}
.menu-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.mobile-menu{
    display:none;
    position:fixed;
    top:var(--header-h);
    left:0;right:0;
    background:#0c0f1a;
    border-bottom:1px solid rgba(148,163,184,.12);
    z-index:998;
    padding:16px 0;
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    box-shadow:0 20px 40px rgba(0,0,0,.4);
}
.mobile-menu.open{display:block}
.mobile-menu .container{
    display:flex;
    flex-direction:column;
    gap:4px;
    padding-bottom:20px;
}
.mobile-menu a{
    display:flex;
    align-items:center;
    min-height:50px;
    padding:0 20px;
    border-radius:12px;
    font-size:16px;
    font-weight:500;
    color:var(--text-body);
    transition:background .2s,color .2s;
}
.mobile-menu a:hover{background:rgba(255,255,255,.05);color:#fff}
.mobile-menu a.active{background:linear-gradient(135deg,rgba(124,58,237,.14),rgba(219,39,119,.10));color:#fff}
.mobile-menu .btn{margin:8px 20px}

/* ====== 页面主区样式 ===== */
body{ padding-top: var(--header-h); }

/* ===== 文章页主体 ===== */
.page-main{
    background: var(--bg);
}
.article-top{
    padding-top: 40px;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(124,58,237,.14), transparent 55%),
        radial-gradient(ellipse at 90% 10%, rgba(219,39,119,.08), transparent 45%),
        var(--bg);
}
.breadcrumb{
    font-size: 14px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 28px;
    padding-top: 10px;
}
.breadcrumb a{ color: var(--text-muted); }
.breadcrumb a:hover{ color: var(--accent); }
.breadcrumb .sep{opacity:.5;padding:0 2px}

.article-header-container{
    background:
        radial-gradient(ellipse at 30% 30%, rgba(124,58,237,.12), transparent 50%),
        radial-gradient(ellipse at 80% 60%, rgba(219,39,119,.06), transparent 50%),
        var(--bg-section);
    border-top:1px solid rgba(148,163,184,.06);
}
.article-header-inner{
    max-width: 980px;
    margin:0 auto;
    padding: 48px 0 24px;
}
.post-cat-pill{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(34,211,238,.08);
    border: 1px solid rgba(34,211,238,.16);
    margin-bottom: 18px;
}
.article-title{
    font-size: clamp(30px, 4.4vw, 48px);
    line-height: 1.2;
    font-weight: 900;
    color: var(--text-strong);
    letter-spacing: -.01em;
    max-width: 860px;
}
.post-meta{
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 24px;
    margin-top: 28px;
    padding: 14px 0;
    border-top: 1px solid rgba(148,163,184,.08);
    color: var(--text-muted);
    font-size: 14px;
}
.post-meta .meta-avatar{
    width:34px;height:34px;
    border-radius:50%;
    background:var(--grad);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:14px;font-weight:700;font-style:normal;
}
.post-meta span{
    display:inline-flex;
    align-items:center;
    gap:6px;
}

/* ===== 正文阅读区 ===== */
.article-content-wrap{
    background: var(--bg);
    padding-top: 44px;
}
.article-content-inner{
    max-width: 860px;
    margin: 0 auto;
}
.article-body-html{
    color: var(--text-body);
    font-size: 17px;
    line-height: 2.0;
}
.article-body-html > * + *{ margin-top: 1.2em; }
.article-body-html p{}
.article-body-html h2{
    font-size: 28px;
    font-weight: 800;
    color: var(--text-strong);
    margin-top: 2.2em;
    margin-bottom: .5em;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(148,163,184,.1);
}
.article-body-html h3{
    font-size: 22px;
    font-weight: 700;
    color: var(--text-strong);
    margin-top: 1.8em;
    margin-bottom: .4em;
}
.article-body-html ul, .article-body-html ol{
    padding-left: 1.4em;
    margin: 1.2em 0;
}
.article-body-html ul{list-style: disc;}
.article-body-html ol{list-style: decimal;}
.article-body-html li{margin-bottom:.5em;padding-left:.2em}
.article-body-html img{border-radius: 14px; margin: 2em 0;}
.article-body-html blockquote{
    border-left: 3px solid var(--brand-purple);
    padding: 16px 24px;
    background: rgba(124,58,237,.08);
    border-radius: 0 14px 14px 0;
    color: var(--text-body);
    font-style: normal;
    margin: 1.8em 0;
}
.article-body-html a{color: var(--accent); border-bottom: 1px solid transparent; transition: border .2s}
.article-body-html a:hover{border-bottom-color: var(--accent)}
.article-body-html code{
    background: rgba(148,163,184,.1);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: .9em;
    font-family: "SF Mono", Consolas, monospace;
}
.article-body-html pre{
    background: #0a0d16;
    border: 1px solid rgba(148,163,184,.1);
    padding: 20px 24px;
    border-radius: 16px;
    overflow-x: auto;
    line-height: 1.6;
}
.article-body-html pre code{background: none; padding: 0;}

/* ===== 标签 ===== */
.post-tags{
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid rgba(148,163,184,.08);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}
.post-tags .tag-label{color: var(--text-muted);font-size: 14px;font-weight:500}
.post-tags a{
    font-size: 13px;
    font-weight:500;
    padding: 5px 14px;
    border-radius: 30px;
    border: 1px solid rgba(148,163,184,.18);
    color: var(--text-body);
    transition: all .2s;
}
.post-tags a:hover{border-color: var(--brand-violet); color:#fff; background: rgba(124,58,237,.08);}

/* ===== 上下篇 ===== */
.pg-nav{
    margin-top: 44px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.pg-nav a{
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 18px 20px;
    background: var(--card);
    border: 1px solid rgba(148,163,184,.08);
    border-radius: 16px;
    transition: all .25s var(--ease);
    min-width: 0;
}
.pg-nav a:hover{background: var(--card-hover); border-color: rgba(148,163,184,.2); transform: translateY(-2px)}
.pg-nav .pg-direction{font-size:13px;color:var(--accent);font-weight:500}
.pg-nav .pg-title{color:var(--text-strong);font-weight:600;font-size:15px;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pg-nav a.next-item{text-align:right}

/* ===== 相关推荐板块 ===== */
.related-wrap{
    margin-top: 80px;
    padding-bottom: 100px;
}
.related-title{
    font-size: 26px;
    font-weight: 800;
    color: var(--text-strong);
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 860px;
    margin-left:auto;
    margin-right: auto;
}
.related-grid{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 860px;
    margin: 0 auto;
}
.related-card{
    background: var(--card);
    border: 1px solid rgba(148,163,184,.07);
    border-radius: 20px;
    overflow: hidden;
    transition: all .3s var(--ease);
}
.related-card:hover{
    transform: translateY(-4px);
    border-color: rgba(124,58,237,.3);
    box-shadow: var(--shadow-card);
    background: var(--card-hover);
}
.related-card-img{
    height: 92px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.related-card-cat{
    position:absolute;
    top:12px;
    left:12px;
    font-size:12px;
    padding:4px 10px;
    background: rgba(8,10,17,.7);
    border:1px solid rgba(148,163,184,.2);
    color:#fff;
    border-radius: 20px;
    font-weight:500;
    backdrop-filter: blur(4px);
}
.related-card-body{
    padding: 16px 18px 18px;
}
.related-card-body h3{
    font-size: 15px;
    line-height: 1.5;
    font-weight: 600;
    color: var(--text-strong);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}
.related-card-body time{font-size: 12px; color: var(--text-muted); display:flex; align-items:center; gap:4px}
.related-back-list{
    text-align:center;
    margin-top: 40px;
}

/* ===== Empty 状态 ===== */
.content-missing{
    background: var(--card);
    border: 1px solid rgba(148,163,184,.08);
    border-radius: 24px;
    padding: 100px 40px;
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}
.content-missing .missing-icon{
    width:72px;
    height:72px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(124,58,237,.15), rgba(219,39,119,.15));
    display:flex;
    align-items:center;
    justify-content:center;
    margin: 0 auto 24px;
    font-size: 36px;
    font-style: normal;
}
.content-missing h2{font-size: 24px; color: #fff; margin-bottom: 12px}
.content-missing p{color: var(--text-muted); font-size: 15px; max-width: 360px; margin: 0 auto 32px}

/* ===== CTA 区 ===== */
.cta-section{
    background:
        radial-gradient(ellipse at 80% 30%, rgba(219,39,119,.12), transparent 60%),
        linear-gradient(135deg, #6D28D9, #BE185D);
    padding: 56px 0;
    margin-top: 0;
}
.cta-box{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.cta-box h2{
    color: #fff;
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 800;
    line-height: 1.3;
    max-width: 640px;
}
.cta-box p{
    color: rgba(255,255,255,.85);
    font-size: 15px;
    margin-top: 8px;
    max-width: 560px;
}
.cta-box .btn-primary{
    background: #fff;
    color: #6D28D9;
    box-shadow: 0 8px 30px rgba(0,0,0,.2);
    flex: 0 0 auto;
}
.cta-box .btn-primary:hover{
    transform: translateY(-3px) scale(1.02);
    box-shadow:0 16px 36px rgba(0,0,0,.3);
}

/* ===== Footer 页脚 ===== */
.site-footer{
    background: #06080F;
    border-top: 1px solid rgba(148,163,184,.06);
    padding-top: 72px;
    padding-bottom: 40px;
}
.site-footer .logo-home{position:static;transform:none;padding:0 0 12px 0;}
.footer-grid{
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 44px;
    margin-bottom: 40px;
}
.footer-brand p{
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.9;
    margin-top: 12px;
    max-width: 340px;
}
.footer-heading{
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap:8px;
}
.footer-heading::before{
    content:'';
    width:4px;
    height:20px;
    background:var(--grad);
    border-radius:4px;
}
.footer-links{
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a{
    color: var(--text-muted);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all .2s;
}
.footer-links a:hover{color: #fff; padding-left: 4px}
.footer-contact-item{
    color: var(--text-muted);
    font-size: 14px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 8px;
    line-height: 1.6;
    word-break: break-all;
}
.footer-contact-item span{
    color: var(--brand-violet);
    font-weight: 600;
    flex: 0 0 auto;
}
.footer-bottom{
    border-top: 1px solid rgba(148,163,184,.06);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 13px;
}
.footer-bottom p{font-size: 13px}

/* ===== 回到顶部 ===== */
.to-top{
    position:fixed;
    bottom:28px;
    right:28px;
    width:46px;
    height:46px;
    border-radius: 14px;
    background: var(--card);
    border:1px solid rgba(148,163,184,.15);
    color: var(--text-body);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size: 18px;
    cursor:pointer;
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:all .3s ease;
    z-index: 800;
    box-shadow: 0 4px 16px rgba(0,0,0,.2);
}
.to-top.show{opacity:1;visibility:visible;pointer-events:auto}
.to-top:hover{
    border-color: var(--brand-violet);
    color:#fff;
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(109,40,217,.3);
}
.to-top:focus-visible{
    opacity:1;visibility:visible;pointer-events:auto;
    outline: 2px solid var(--accent); outline-offset:3px;
}

/* ===== 焦点可见 ===== */
a:focus-visible, .btn:focus-visible, button:focus-visible{
    outline:none;
    box-shadow:0 0 0 3px rgba(34,211,238,.4);
    border-radius: 6px;
}

/* ===== FAQ ===== */
.faq-section{padding-top:0;margin-top:0;padding-bottom:0}
.faq-list{
    display: flex;
    flex-direction: column;
    gap:16px;
    max-width: 860px;
    margin:0 auto;
}
.faq-item{
    background: var(--card);
    border:1px solid rgba(148,163,184,.08);
    border-radius: 18px;
    overflow:hidden;
    transition: border-color .3s;
}
.faq-item summary{
    cursor:pointer;
    padding:20px 24px;
    display:flex;
    justify-content: space-between;
    align-items:center;
    gap: 16px;
    font-size:16px;
    font-weight:600;
    color: var(--text-strong);
    list-style:none;
    transition: color .2s;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .icon{
    flex:0 0 auto;
    width:28px;
    height:28px;
    border-radius: 50%;
    border:1px solid rgba(148,163,184,.2);
    display:flex;
    align-items:center;
    justify-content:center;
    color: var(--brand-violet);
    font-style: normal;
    font-size: 15px;
    font-weight:400;
    transition: all .3s var(--ease);
    background: rgba(139,92,246,.06);
}
.faq-item[open] summary{border-bottom:1px solid rgba(148,163,184,.05)}
.faq-item[open] summary .icon{transform: rotate(45deg); background: var(--grad); color:#fff; border-color:transparent}
.faq-item .faq-content{
    padding: 4px 24px 20px;
    color: var(--text-muted);
    font-size:15px;
    line-height:1.8;
}

/* ===== 分隔线组件 ===== */
.divider{
    border:0;
    height:1px;
    background: linear-gradient(90deg, transparent, rgba(148,163,184,.25), transparent);
    margin:0;
}

/* ===== 响应式 ===== */
@media (max-width:1180px){
    .nav-group-left .nav-link:nth-child(2),
    .nav-group-left .nav-link:nth-child(3) {
        padding-left: 10px; padding-right: 10px; font-size:14px;
    }
    .nav-group-right .nav-link{padding-left:10px; padding-right:10px; font-size:14px}
    .logo-text{font-size:18px}
    .nav-group-right a.btn{padding:9px 16px !important; font-size:13px !important}
}

@media (max-width:1023px){
    .nav-group-left,.nav-group-right{display:none}
    .header-inner{justify-content:flex-start}
    .logo-home{
        left:50%;
        transform:translateX(-50%);
        position:absolute;
    }
    .menu-btn{display:flex}
    .menu-btn#menuToggleRight{display:none !important}
    .mobile-menu{
        left:0;right:0;
    }
    :root{--gutter:24px}
    .section-wrap{padding:80px 0}
    .section-head{margin-bottom:44px}
}

@media (max-width:768px){
    :root{--gutter:20px;--header-h:68px}
    .site-header{height:var(--header-h)}
    .section-wrap{padding:64px 0}
    .logo-icon{width:32px;height:32px;font-size:16px;border-radius:10px}
    .logo-text{font-size:16px}
    .section-title{font-size:30px}
    .article-title{font-size:28px;line-height:1.35}
    .article-header-inner{padding-top:20px}
    .breadcrumb{font-size:13px;margin-bottom:18px;flex-wrap:wrap}
    .post-meta{gap:10px 16px}
    .article-body-html{font-size:16px;line-height:2}
    .article-body-html h2{font-size:22px}
    .article-body-html h3{font-size:19px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand p{max-width:100%}
    .cta-box{flex-direction:column;align-items:flex-start}
    .pg-nav{grid-template-columns:1fr 1fr;gap:10px}
    .pg-nav a{padding:16px 14px}
    .related-grid{grid-template-columns:1fr;gap:14px}
    .related-card{display:flex;align-items:center}
    .related-card-img{width:100px;height:80px;flex-shrink:0}
    .related-card-cat{top:6px;left:6px;font-size:10px;padding:2px 8px}
    .related-card-body{padding:14px}
    .faq-item summary{padding:16px 18px}
    .faq-item .faq-content{padding:4px 18px 16px}
}

@media (max-width:520px){
    body{padding-top:var(--header-h)}
    .container{padding-left:16px;padding-right:16px}
    .section-wrap{padding:56px 0}
    .article-body-html{font-size:16px;line-height:1.9}
    .pg-nav{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;gap:36px}
    .to-top{bottom:16px;right:16px}
    .breadcrumb{margin-bottom:14px}
    .article-header-inner{padding-top:8px}
    .post-meta{display:flex;flex-wrap:wrap;align-items:flex-start;gap:8px 14px;padding:14px 0 8px}
    .meta-avatar{display:none}
}

/* ===== 打印样式 ===== */
@media print{
    .site-header,.site-footer,.to-top,.cta-section,.pg-nav,.no-print{display:none !important}
    body{padding-top:0}
    .article-body-html{background:#fff;color:#222}
    .article-title{color:#333}
    .page-main{background:#fff}
    .article-header-container{background:#fff;border:none}
    .article-body-html h2,.article-body-html h3{color:#222}
}

/* roulang page: category2 */
:root {
      --bg: #080A11;
      --bg-section: #0E111B;
      --card: #141926;
      --card-hover: #1B2233;
      --card-border: rgba(148, 163, 184, 0.14);
      --brand-violet: #8B5CF6;
      --brand-purple: #7C3AED;
      --brand-magenta: #DB2777;
      --brand-pink: #EC4899;
      --accent: #22D3EE;
      --text-strong: #F8FAFC;
      --text-body: #CBD2E0;
      --text-muted: #94A3B8;
      --radius-card: 20px;
      --transition-base: 0.3s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background-color: var(--bg);
      color: var(--text-body);
      font-family: 'system-ui', '-apple-system', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
    }
    
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    
    a {
      text-decoration: none;
      color: inherit;
      transition: all var(--transition-base);
    }
    
    button {
      cursor: pointer;
    }
    
    .gradient-text {
      background: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      color: transparent;
    }
    
    .container {
      max-width: 1320px;
      margin: 0 auto;
      padding: 0 32px;
    }
    
    /* ===== Header  ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      background-color: rgba(8, 10, 17, 0.98);
      border-bottom: 1px solid rgba(148, 163, 184, 0.08);
      z-index: 1000;
      transition: all 0.3s ease;
    }
    
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 80px;
      position: relative;
    }
    
    .nav-group-left,
    .nav-group-right {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    
    .nav-link {
      color: var(--text-muted);
      font-size: 15px;
      font-weight: 500;
      padding: 8px 2px;
      position: relative;
      letter-spacing: 0.01em;
    }
    
    .nav-link:hover {
      color: var(--text-strong);
    }
    
    .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(135deg, #7C3AED, #DB2777);
      border-radius: 2px;
      transition: width 0.3s ease;
    }
    
    .nav-link:hover::after {
      width: 100%;
    }
    
    .nav-link.active {
      color: var(--text-strong);
    }
    
    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      background: linear-gradient(135deg, #7C3AED, #DB2777);
      border-radius: 2px;
    }
    
    .logo-home {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      z-index: 10;
      gap: 10px;
    }
    
    .logo-icon {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 20px;
      font-weight: 900;
      box-shadow: 0 6px 16px rgba(139, 92, 246, 0.3);
    }
    
    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-strong);
      letter-spacing: 0.02em;
    }
    
    .logo-text em {
      font-style: normal;
      background: linear-gradient(135deg, #A78BFA, #F472B6);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 900;
    }
    
    .menu-btn {
      display: none;
      background: none;
      border: 1px solid rgba(148, 163, 184, 0.2);
      border-radius: 10px;
      padding: 8px 12px;
      color: var(--text-strong);
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
    }
    
    .menu-btn svg {
      width: 20px;
      height: 20px;
    }
    
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      font-weight: 600;
      font-size: 16px;
      padding: 14px 29px;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
      text-decoration: none;
      font-family: inherit;
    }
    
    .btn:focus-visible,
    .nav-link:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 3px;
    }
    
    .btn-primary {
      background: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
      color: #fff;
      border-color: rgba(255, 255, 255, 0.1);
      box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
    }
    
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(124, 58, 237, 0.4);
      color: #fff;
    }
    
    .btn-primary:active {
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(124, 58, 237, 0.2);
    }
    
    .btn-outline {
      background: transparent;
      border-color: rgba(148, 163, 184, 0.3);
      color: var(--text-strong);
    }
    
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
    }
    
    /* ===== Hero 区域 ===== */
    .page-hero {
      margin-top: 80px;
      position: relative;
      background-image: linear-gradient(90deg, rgba(8, 10, 17, 0.94) 0%, rgba(13, 15, 25, 0.8) 50%, rgba(8, 10, 17, 0.65) 100%), url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      padding: 120px 0 90px;
      overflow: hidden;
    }
    
    .page-hero::before {
      content: '';
      position: absolute;
      top: -100px;
      right: -100px;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%);
      pointer-events: none;
      border-radius: 50%;
    }
    
    .page-hero::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 30%;
      right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.3), rgba(124, 58, 237, 0.5), rgba(219, 39, 119, 0.4), transparent);
    }
    
    .hero-content {
      max-width: 760px;
    }
    
    .crumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 28px;
    }
    
    .crumb a:hover {
      color: var(--text-strong);
    }
    
    .crumb-sep {
      color: var(--text-muted);
      opacity: 0.5;
    }
    
    .page-hero h1 {
      font-size: 58px;
      line-height: 1.15;
      color: var(--text-strong);
      font-weight: 900;
      letter-spacing: 0.01em;
    }
    
    .page-hero .lead {
      margin-top: 22px;
      font-size: 17px;
      color: rgba(203, 210, 224, 0.9);
      max-width: 620px;
      line-height: 1.8;
    }
    
    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 36px;
      margin-top: 46px;
    }
    
    .hero-stat-item {
      padding-right: 36px;
      position: relative;
    }
    
    .hero-stat-item:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 10%;
      bottom: 10%;
      width: 1px;
      background: rgba(148, 163, 184, 0.15);
    }
    
    .hero-stat-item .num {
      font-size: 34px;
      font-weight: 800;
      color: var(--text-strong);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }
    
    .hero-stat-item .num span, 
    .hero-stat-item .num em {
      background: linear-gradient(135deg, #A78BFA, #F472B6);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      font-style: normal;
    }
    
    .hero-stat-item .label {
      margin-top: 5px;
      font-size: 13px;
      color: var(--text-muted);
    }
    
    .hero-btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 44px;
    }
    
    /* ===== 栏目页通用区块 ===== */
    .section {
      padding: 94px 0;
    }
    
    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.06em;
      margin-bottom: 14px;
    }
    
    .section-label::before {
      content: '';
      width: 24px;
      height: 2px;
      background: linear-gradient(90deg, #7C3AED, var(--accent));
      border-radius: 2px;
    }
    
    .section-title {
      font-size: 36px;
      font-weight: 800;
      color: var(--text-strong);
      line-height: 1.3;
      letter-spacing: -0.01em;
      margin-bottom: 20px;
    }
    
    .section-desc {
      font-size: 16px;
      max-width: 640px;
      color: var(--text-muted);
      line-height: 1.8;
    }
    
    /* 卖点条 */
    .benefit-strip {
      padding: 50px 0;
      border-bottom: 1px solid rgba(148, 163, 184, 0.08);
    }
    
    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    
    .benefit-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 8px;
    }
    
    .benefit-icon {
      flex: 0 0 46px;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(219, 39, 119, 0.2) 100%);
      border: 1px solid rgba(139, 92, 246, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #C084FC;
      font-size: 20px;
      font-weight: 700;
    }
    
    .benefit-text h3 {
      color: var(--text-strong);
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 5px;
    }
    
    .benefit-text p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }
    
    /* 商品分类区块 */
    .mall-category-section {
      background-color: #0B0E17;
    }
    
    .category-tabs-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    
    .cat-tab-card {
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: 18px;
      padding: 30px 24px;
      text-align: center;
      transition: all 0.35s ease;
      position: relative;
      overflow: hidden;
    }
    
    .cat-tab-card:hover {
      background: var(--card-hover);
      transform: translateY(-4px);
      border-color: rgba(139, 92, 246, 0.35);
      box-shadow: 0 16px 36px rgba(109, 40, 217, 0.15);
    }
    
    .cat-tab-card .cat-icon {
      width: 64px;
      height: 64px;
      border-radius: 20px;
      margin: 0 auto 18px;
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.15), rgba(219, 39, 119, 0.15));
      border: 1px solid rgba(139, 92, 246, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #E9D5FF;
      font-size: 28px;
      font-weight: 700;
    }
    
    .cat-tab-card h3 {
      color: var(--text-strong);
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    
    .cat-tab-card p {
      color: var(--text-muted);
      font-size: 13px;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    
    .cat-tab-card .card-tag-list {
      display: flex;
      justify-content: center;
      gap: 6px;
      flex-wrap: wrap;
    }
    
    /* ===== 商品卡 ===== */
    .featured-products-section {
      background: var(--bg);
      position: relative;
    }
    
    .product-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 46px;
    }
    
    .product-card {
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      overflow: hidden;
      transition: all 0.35s cubic-bezier(0.2, 0, 0, 1);
      display: flex;
      flex-direction: column;
    }
    
    .product-card:hover {
      transform: translateY(-4px);
      background: var(--card-hover);
      border-color: rgba(139, 92, 246, 0.3);
      box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
    }
    
    .product-thumb {
      position: relative;
      aspect-ratio: 4/3;
      overflow: hidden;
    }
    
    .product-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    
    .product-card:hover .product-thumb img {
      transform: scale(1.04);
    }
    
    .product-tag {
      position: absolute;
      top: 12px;
      left: 12px;
      background: linear-gradient(135deg, #7C3AED, #DB2777);
      border-radius: 20px;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 600;
      color: #fff;
      z-index: 2;
    }
    
    .product-tag.hot {
      background: linear-gradient(135deg, #DB2777, #F59E0B);
    }
    
    .product-info {
      padding: 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    
    .product-info h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-strong);
      line-height: 1.4;
      margin-bottom: 8px;
    }
    
    .product-info .desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      flex: 1;
    }
    
    .product-price-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 18px;
      flex-wrap: wrap;
      gap: 10px;
    }
    
    .price-box .price {
      font-size: 22px;
      font-weight: 800;
      background: linear-gradient(135deg, #A78BFA, #F472B6);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    
    .price-box .original {
      font-size: 13px;
      color: var(--text-muted);
      text-decoration: line-through;
      margin-left: 6px;
    }
    
    .btn-cart {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 7px 15px;
      border-radius: 10px;
      background: rgba(124, 58, 237, 0.12);
      border: 1px solid rgba(139, 92, 246, 0.25);
      color: #C4B5FD;
      font-size: 13px;
      font-weight: 600;
      transition: all 0.3s ease;
    }
    
    .btn-cart:hover {
      background: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
      color: #fff;
      border-color: transparent;
    }
    
    /* ===== 商品栏目分类·横向分组 ===== */
    .category-pill-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 32px;
    }
    
    .category-pill {
      display: inline-flex;
      align-items: center;
      border-radius: 30px;
      padding: 8px 20px;
      background: var(--card);
      border: 1px solid var(--card-border);
      color: var(--text-body);
      font-size: 14px;
      font-weight: 600;
      transition: all 0.3s ease;
    }
    
    .category-pill:hover {
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(219, 39, 119, 0.2));
      border-color: rgba(139, 92, 246, 0.3);
      transform: translateY(-2px);
    }
    
    /* 热售商品横向图 */
    .hot-sale-section {
      background-color: var(--bg-section);
      border-top: 1px solid rgba(148, 163, 184, 0.06);
    }
    
    .hot-sale-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 44px;
    }
    
    .hot-sale-item {
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      display: grid;
      grid-template-columns: 130px 1fr;
      gap: 20px;
      padding: 20px;
      transition: all 0.3s ease;
      align-items: center;
    }
    
    .hot-sale-item:hover {
      background: var(--card-hover);
      border-color: rgba(34, 211, 238, 0.25);
      transform: translateY(-2px);
    }
    
    /* ===== 图文介绍 ===== */
    .intro-media-section {
      background: var(--bg);
    }
    
    .media-block-style {
      display: flex;
      gap: 48px;
      align-items: center;
      flex-wrap: wrap;
      margin-bottom: 70px;
    }
    
    .media-img-wrap {
      flex: 0 0 42%;
      border-radius: 24px;
      overflow: hidden;
      aspect-ratio: 16/10;
      position: relative;
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    }
    
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    
    .media-img-wrap::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 30%;
      background: linear-gradient(transparent, rgba(8, 10, 17, 0.4));
    }
    
    .media-content-wrap {
      flex: 1 1 45%;
    }
    
    .media-content-wrap h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-strong);
      line-height: 1.4;
      margin-bottom: 16px;
    }
    
    .media-content-wrap p {
      color: var(--text-muted);
      font-size: 16px;
      line-height: 1.85;
      margin-bottom: 16px;
    }
    
    .feature-points {
      padding: 0;
      list-style: none;
      margin-top: 10px;
    }
    
    .feature-points li {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 8px 0;
    }
    
    .feature-points li .dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: linear-gradient(135deg, #7C3AED, var(--accent));
    }
    
    /* ===== 购买流程 ===== */
    .process-chain-section {
      background: var(--bg-section);
      border-bottom: 1px solid rgba(148, 163, 184, 0.06);
    }
    
    .process-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 48px;
      margin-bottom: 20px;
      position: relative;
    }
    
    .process-step {
      position: relative;
      padding: 0 10px;
    }
    
    .process-step .step-num {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      background: linear-gradient(135deg, #7C3AED, #DB2777);
      color: #fff;
      font-size: 22px;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.3);
    }
    
    .process-step h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-strong);
      margin-bottom: 8px;
    }
    
    .process-step p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    
    .process-chain .process-step:not(:last-child)::after {
      content: '→';
      position: absolute;
      top: 15%;
      right: -20px;
      color: rgba(139, 92, 246, 0.6);
      font-size: 22px;
    }
    
    /* ===== FAQ 区块 ===== */
    .faq-section {
      background: var(--bg);
    }
    
    .faq-panel {
      margin-top: 42px;
    }
    
    .faq-item {
      background: var(--card);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: all 0.3s ease;
    }
    
    .faq-item:hover {
      border-color: rgba(139, 92, 246, 0.2);
    }
    
    .faq-item[open] {
      border-color: rgba(139, 92, 246, 0.3);
    }
    
    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 20px 24px;
      cursor: pointer;
      color: var(--text-strong);
      font-weight: 600;
      font-size: 17px;
      list-style: none;
    }
    
    .faq-item summary:hover {
      color: #C4B5FD;
    }
    
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    
    .faq-item summary .plus-icon {
      flex: 0 0 32px;
      width: 32px;
      height: 32px;
      background: rgba(124, 58, 237, 0.12);
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: #C084FC;
      transition: transform 0.3s ease;
    }
    
    .faq-item[open] summary .plus-icon {
      transform: rotate(45deg);
    }
    
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.85;
    }
    
    .faq-answer a {
      color: var(--accent);
    }
    
    /* ===== CTA 区块 ===== */
    .cta-section {
      padding: 100px 0;
      position: relative;
      overflow: hidden;
    }
    
    .cta-card {
      background: linear-gradient(135deg, #6D28D9 0%, #A21CAF 40%, #DB2777 100%);
      border-radius: 28px;
      padding: 58px 56px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 30px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 30px 60px rgba(124, 58, 237, 0.2);
    }
    
    .cta-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: radial-gradient(rgba(255, 255, 255, 0.08) 0.8px, transparent 0.8px);
      background-size: 22px 22px;
      opacity: 0.4;
      pointer-events: none;
    }
    
    .cta-card h2 {
      color: #fff;
      font-size: 34px;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 12px;
    }
    
    .cta-card p {
      color: rgba(255, 255, 255, 0.86);
      font-size: 16px;
      max-width: 520px;
    }
    
    .cta-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      position: relative;
      z-index: 2;
    }
    
    .btn-white {
      background: #fff;
      color: #7C3AED;
    }
    
    .btn-white:hover {
      background: #F3E8FF;
      color: #6D28D9;
    }
    
    .btn-ghost {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.5);
      color: #fff;
    }
    
    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.18);
      border-color: #fff;
      color: #fff;
    }
    
    /* ===== 站点保障条 ===== */
    .service-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    
    /* ===== 页脚样式 ===== */
    .site-footer {
      background-color: #06070D;
      border-top: 1px solid rgba(148, 163, 184, 0.06);
      padding-top: 64px;
    }
    
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.4fr;
      gap: 40px;
      padding-bottom: 44px;
      border-bottom: 1px solid rgba(148, 163, 184, 0.06);
    }
    
    .footer-brand p {
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.8;
      margin-top: 18px;
      max-width: 320px;
    }
    
    .footer-heading {
      color: var(--text-strong);
      font-weight: 700;
      font-size: 16px;
      margin-bottom: 20px;
      letter-spacing: 0.02em;
    }
    
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    
    .footer-links a {
      color: var(--text-muted);
      font-size: 14px;
    }
    
    .footer-links a:hover {
      color: var(--accent);
    }
    
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 12px;
      color: var(--text-muted);
      font-size: 14px;
    }
    
    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      gap: 10px;
      padding: 22px 0 28px;
    }
    
    .footer-bottom p {
      font-size: 13px;
      color: rgba(148, 163, 184, 0.7);
    }
    
    /* 响应式 */
    @media (max-width: 1024px) {
      .container {
        padding: 0 24px;
      }
      
      .nav-group-left,
      .nav-group-right {
        gap: 16px;
      }
      
      .nav-group-right .nav-link:nth-child(2) {
        display: none;
      }
      
      .product-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      
      .benefit-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      
      .category-tabs-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      
      .media-block-style {
        gap: 30px;
      }
    }
    
    @media (max-width: 820px) {
      .menu-btn {
        display: inline-flex;
      }
      
      .nav-group-left,
      .nav-group-right {
        display: none;
        position: absolute;
        top: 90px;
        left: 0;
        right: 0;
        background: #0E111B;
        border-radius: 0;
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 30px 30px;
        gap: 4px;
      }
      
      .nav-group-left.open,
      .nav-group-right.open {
        display: flex;
      }
      
      .nav-group-left.open {
        z-index: 50;
        border-right: 1px solid rgba(148, 163, 184, 0.08);
        width: 60%;
      }
      
      .nav-group-right.open {
        z-index: 50;
        left: auto;
        border-left: 1px solid rgba(148, 163, 184, 0.08);
        width: 100%;
        top: 90px;
        background: rgba(14, 17, 27, 0.97);
      }
      
      /* 默认打开左侧菜单 */
      .nav-group-left.open, 
      .nav-group-right.open {
        top: 80px;
        height: auto;
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.3);
      }
      
      .nav-link {
        font-size: 18px;
        padding: 14px 6px;
        width: 100%;
      }
      
      .logo-home {
        position: relative;
        left: auto;
        top: auto;
        transform: none;
      }
      
      .header-inner {
        justify-content: space-between;
        gap: 12px;
        height: 76px;
      }
      
      .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 18px;
      }
      
      .logo-text {
        font-size: 17px;
      }
      
      .page-hero h1 {
        font-size: 34px;
      }
      
      .page-hero .lead {
        font-size: 16px;
      }
      
      .hero-stat-item .num {
        font-size: 26px;
      }
      
      .section {
        padding: 70px 0;
      }
      
      .section-title {
        font-size: 30px;
      }
      
      .process-chain {
        grid-template-columns: repeat(2, 1fr);
      }
      
      .process-chain .process-step:nth-child(2n)::after {
        display: none;
      }
      
      .hot-sale-item {
        grid-template-columns: 110px 1fr;
      }
      
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      
      .site-header .menu-btn:last-child {
        display: inline-flex;
      }
    }
    
    @media (max-width: 580px) {
      .container {
        padding: 0 20px;
      }
      
      .logo-text {
        display: none;
      }
      
      .product-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }
      
      .benefit-grid {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      
      .category-tabs-grid {
        grid-template-columns: 1fr;
      }
      
      .hot-sale-row {
        grid-template-columns: 1fr;
      }
      
      .hot-sale-item {
        grid-template-columns: 105px 1fr;
        padding: 16px;
        gap: 14px;
      }
      
      .section {
        padding: 58px 0;
      }
      
      .process-chain {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      
      .process-chain .process-step::after {
        content: '↓' !important;
        top: auto !important;
        bottom: -28px !important;
        left: 20px;
        right: auto !important;
      }
      
      .process-chain .process-step:last-child::after {
        display: none;
      }
      
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      
      .btn {
        width: 100%;
        justify-content: center;
      }
      
      .hero-btn-row {
        flex-direction: column;
      }
      
      .hero-stat {
        flex-wrap: wrap;
        gap: 24px;
      }
      
      .hero-stat-item {
        flex: 0 0 46%;
        padding-right: 10px;
      }
      
      .hero-stat-item:not(:last-child)::after {
        display: none;
      }
      
      .media-block-style {
        flex-direction: column-reverse;
      }
      
      .media-img-wrap {
        flex: 0 0 100%;
        width: 100%;
      }
      
      .cta-card {
        padding: 30px 24px;
      }
      
      .cta-card h2 {
        font-size: 26px;
      }
      
      .site-footer .menu-btn {
        display: none !important;
      }
    }

/* roulang page: category1 */
:root {
        --bg: #080A11;
        --bg-section: #0E111B;
        --card: #141926;
        --card-hover: #1B2233;
        --card-border: rgba(148, 163, 184, .14);
        --brand-violet: #8B5CF6;
        --brand-purple: #7C3AED;
        --brand-magenta: #DB2777;
        --brand-pink: #EC4899;
        --accent: #22D3EE;
        --text-strong: #F8FAFC;
        --text-body: #CBD2E0;
        --text-muted: #94A3B8;
        --radius-card: 20px;
        --shadow-card: 0 6px 24px rgba(0, 0, 0, .28);
        --shadow-hover: 0 16px 36px rgba(109, 40, 217, .18);
        --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--bg);
        color: var(--text-body);
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.75;
        font-variant-numeric: tabular-nums;
        -webkit-font-smoothing: antialiased;
        overflow-x: hidden;
    }

    h1, h2, h3, h4, p, ul, ol {
        margin: 0;
    }

    ul, ol {
        padding: 0;
        list-style: none;
    }

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

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

    button {
        font: inherit;
        border: 0;
        background: none;
        cursor: pointer;
        color: inherit;
    }

    input, textarea {
        font: inherit;
    }

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible,
    input:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 3px;
        border-radius: 8px;
    }

    .container {
        max-width: 1320px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 32px;
        padding-right: 32px;
    }

    .section {
        padding: 96px 0;
    }

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

    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--accent);
        font-size: 14px;
        font-weight: 600;
        letter-spacing: 1.6px;
        text-transform: uppercase;
        margin-bottom: 12px;
    }

    .eyebrow::before {
        content: "";
        width: 22px;
        height: 2px;
        background: linear-gradient(90deg, var(--brand-purple), var(--brand-magenta));
        border-radius: 2px;
    }

    .section-head-row {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 48px;
        margin-bottom: 56px;
    }

    .section-title {
        color: var(--text-strong);
        font-size: clamp(30px, 3.4vw, 42px);
        font-weight: 800;
        line-height: 1.25;
        letter-spacing: -0.5px;
    }

    .section-desc {
        max-width: 480px;
        color: var(--text-body);
        font-size: 16px;
        line-height: 1.9;
    }

    .center-title {
        max-width: 760px;
        margin: 0 auto 54px;
        text-align: center;
    }

    .center-title .eyebrow {
        justify-content: center;
    }

    .center-title .eyebrow::before {
        display: none;
    }

    .center-title .section-title {
        margin-bottom: 16px;
    }

    .center-title .section-desc {
        max-width: 680px;
        margin: 0 auto;
    }

    /* ===== header / nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: rgba(13, 16, 26, .96);
        border-bottom: 1px solid rgba(148, 163, 184, .12);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        height: 80px;
        position: relative;
    }

    .logo-home {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        display: flex;
        align-items: center;
        gap: 10px;
        z-index: 12;
        padding: 6px 10px;
        border-radius: 14px;
        transition: background .25s ease;
    }

    .logo-home:hover {
        background: rgba(148, 163, 184, .08);
    }

    .logo-icon {
        width: 36px;
        height: 36px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
        border-radius: 11px;
        color: #fff;
        font-size: 18px;
        font-weight: 900;
        box-shadow: 0 6px 18px rgba(124, 58, 237, .32);
    }

    .logo-text {
        color: var(--text-strong);
        font-size: 19px;
        font-weight: 800;
        letter-spacing: .4px;
        white-space: nowrap;
    }

    .logo-text em {
        font-style: normal;
        background: linear-gradient(135deg, #C084FC, #F472B6);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }

    .nav-group-left,
    .nav-group-right {
        display: flex;
        align-items: center;
        gap: 28px;
        min-width: 0;
    }

    .nav-group-left {
        justify-content: flex-start;
    }

    .nav-group-right {
        justify-content: flex-end;
    }

    .nav-link {
        position: relative;
        padding: 10px 0 12px;
        color: var(--text-body);
        font-size: 15.5px;
        font-weight: 500;
        line-height: 1.2;
        transition: color .2s ease;
        white-space: nowrap;
    }

    .nav-link::after {
        content: "";
        position: absolute;
        left: 0;
        right: 100%;
        bottom: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--brand-purple), var(--brand-magenta));
        transition: right .25s ease;
    }

    .nav-link:hover,
    .nav-link.active {
        color: #fff;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
        right: 0;
    }

    .menu-btn {
        display: none;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--card-border);
        border-radius: 12px;
        background: var(--card);
        color: var(--text-strong);
        transition: background .2s ease, border-color .2s ease;
    }

    .menu-btn:hover {
        background: var(--card-hover);
        border-color: rgba(148, 163, 184, .35);
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-radius: 13px;
        font-weight: 600;
        line-height: 1.4;
        transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
        color: #fff;
        padding: 13px 28px;
        box-shadow: 0 8px 22px rgba(124, 58, 237, .26);
        border: 1px solid rgba(255, 255, 255, .14);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 32px rgba(219, 39, 119, .28);
    }

    .btn-primary:focus-visible {
        box-shadow: 0 0 0 4px rgba(34, 211, 238, .18);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(124, 58, 237, .22);
    }

    .btn-secondary {
        background: rgba(148, 163, 184, .06);
        color: var(--text-strong);
        padding: 13px 26px;
        border: 1px solid rgba(203, 210, 224, .35);
    }

    .btn-secondary:hover {
        border-color: rgba(203, 210, 224, .7);
        color: #fff;
        background: rgba(203, 210, 224, .1);
        transform: translateY(-2px);
    }

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

    .btn-text {
        padding: 6px 0;
        color: var(--text-strong);
        font-weight: 600;
        border-radius: 6px;
        transition: color .2s ease;
    }

    .btn-text:hover {
        color: var(--accent);
    }

    .btn-text .arrow-icon {
        transition: transform .2s ease;
    }

    .btn-text:hover .arrow-icon {
        transform: translateX(4px);
    }

    /* ===== hero ===== */
    .event-hero {
        position: relative;
        display: flex;
        align-items: center;
        min-height: max(640px, 88vh);
        overflow: hidden;
        background-color: #0A0D15;
        background-size: cover;
        background-position: center;
    }

    .event-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background:
            linear-gradient(100deg, rgba(8, 10, 17, .96) 8%, rgba(8, 10, 17, .78) 52%, rgba(8, 10, 17, .32) 100%),
            radial-gradient(circle at 88% 20%, rgba(124, 58, 237, .28), transparent 38%);
        z-index: 1;
        pointer-events: none;
    }

    .hero-inner {
        position: relative;
        z-index: 2;
        width: 100%;
        padding: 184px 32px 104px;
    }

    .hero-crumb {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 18px;
        color: var(--text-muted);
        font-size: 14px;
    }

    .hero-crumb a {
        transition: color .2s ease;
    }

    .hero-crumb a:hover {
        color: var(--text-strong);
    }

    .hero-crumb span.current {
        color: var(--text-body);
    }

    .hero-kicker {
        display: inline-flex;
        align-items: center;
        gap: 9px;
        padding: 8px 14px;
        background: rgba(139, 92, 246, .12);
        border: 1px solid rgba(139, 92, 246, .28);
        border-radius: 999px;
        color: #E0CBFF;
        font-size: 14px;
        font-weight: 600;
        margin-bottom: 26px;
    }

    .hero-kicker .dot {
        width: 7px;
        height: 7px;
        background: var(--accent);
        border-radius: 50%;
        box-shadow: 0 0 0 4px rgba(34, 211, 238, .13);
    }

    .hero-title {
        max-width: 760px;
        font-size: clamp(44px, 6vw, 72px);
        font-weight: 900;
        line-height: 1.1;
        color: var(--text-strong);
        letter-spacing: -1px;
        margin: 0 0 30px;
    }

    .gradient-text {
        background: linear-gradient(120deg, #C084FC, #F472B6 45%, #22D3EE);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }

    .hero-sub {
        max-width: 660px;
        color: var(--text-body);
        font-size: 18px;
        line-height: 1.9;
        margin: 0 0 36px;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
    }

    .hero-stats {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        max-width: 820px;
        margin-top: 62px;
        border: 1px solid rgba(148, 163, 184, .14);
        border-radius: 22px;
        background: rgba(20, 25, 38, .72);
        overflow: hidden;
    }

    .hero-stat-item {
        padding: 22px 28px;
        border-right: 1px solid rgba(148, 163, 184, .12);
    }

    .hero-stat-item:last-child {
        border-right: 0;
    }

    .hero-stat-value {
        display: block;
        color: #fff;
        font-size: 36px;
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 6px;
    }

    .hero-stat-value em {
        font-style: normal;
        font-size: 19px;
        font-weight: 700;
        color: var(--accent);
        margin-left: 1px;
    }

    .hero-stat-label {
        color: var(--text-muted);
        font-size: 14px;
        line-height: 1.6;
    }

    .pill {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 6px 14px;
        border-radius: 999px;
        border: 1px solid rgba(139, 92, 246, .32);
        background: rgba(139, 92, 246, .1);
        color: #D9C8FF;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: .4px;
    }

    .pill-cyan {
        border-color: rgba(34, 211, 238, .32);
        background: rgba(34, 211, 238, .08);
        color: #A9F1FF;
    }

    /* ===== feature cards ===== */
    .feature-card-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 32px;
    }

    .feature-card {
        display: flex;
        flex-direction: column;
        background: var(--card);
        border: 1px solid var(--card-border);
        border-radius: 24px;
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .feature-card:hover {
        transform: translateY(-4px);
        border-color: rgba(139, 92, 246, .38);
        box-shadow: var(--shadow-hover);
    }

    .feature-media {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16 / 8.6;
        background: var(--bg-section);
    }

    .feature-media img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform .45s ease;
    }

    .feature-card:hover .feature-media img {
        transform: scale(1.04);
    }

    .feature-body {
        display: flex;
        flex: 1;
        flex-direction: column;
        padding: 28px;
    }

    .feature-body .pill {
        align-self: flex-start;
        margin-bottom: 14px;
    }

    .feature-body h3 {
        color: var(--text-strong);
        font-size: 24px;
        font-weight: 800;
        line-height: 1.3;
        margin-bottom: 12px;
    }

    .feature-body p {
        color: var(--text-body);
        font-size: 16px;
        line-height: 1.85;
        margin-bottom: 16px;
    }

    .chip-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 10px;
    }

    .chip-list span {
        padding: 4px 10px;
        border-radius: 8px;
        border: 1px solid rgba(148, 163, 184, .14);
        background: rgba(148, 163, 184, .06);
        color: var(--text-body);
        font-size: 13px;
    }

    .feature-action {
        margin-top: auto;
        padding-top: 24px;
    }

    /* ===== flow / process ===== */
    .chain-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 24px;
    }

    .chain-step {
        position: relative;
        background: var(--card);
        border: 1px solid var(--card-border);
        border-radius: 22px;
        padding: 28px 26px;
        transition: background .2s ease, transform .2s ease, border-color .2s ease;
    }

    .chain-step:hover {
        background: var(--card-hover);
        border-color: rgba(139, 92, 246, .32);
        transform: translateY(-4px);
    }

    .step-num {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 12px;
        background: linear-gradient(135deg, rgba(124, 58, 237, .18), rgba(219, 39, 119, .18));
        color: #F0BFFF;
        font-size: 16px;
        font-weight: 800;
        margin-bottom: 22px;
        border: 1px solid rgba(139, 92, 246, .22);
    }

    .chain-step h3 {
        color: var(--text-strong);
        font-size: 19px;
        font-weight: 700;
        margin-bottom: 10px;
    }

    .chain-step p {
        color: var(--text-muted);
        font-size: 14.5px;
        line-height: 1.8;
    }

    /* ===== media + feature list ===== */
    .media-block {
        display: grid;
        grid-template-columns: 7fr 5fr;
        align-items: center;
        gap: 62px;
    }

    .media-image {
        position: relative;
        border-radius: 28px;
        overflow: hidden;
        box-shadow: var(--shadow-card);
    }

    .media-image::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(145deg, transparent 55%, rgba(8, 10, 17, .72));
        border-radius: 28px;
        pointer-events: none;
    }

    .media-image img {
        width: 100%;
        aspect-ratio: 4 / 3;
        object-fit: cover;
    }

    .media-content h2 {
        color: var(--text-strong);
        font-size: clamp(28px, 3vw, 38px);
        font-weight: 800;
        line-height: 1.3;
        margin-bottom: 18px;
    }

    .media-content>p {
        color: var(--text-body);
        font-size: 16px;
        line-height: 1.9;
        margin-bottom: 26px;
    }

    .check-list {
        display: grid;
        gap: 13px;
        margin-bottom: 30px;
    }

    .check-list li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        color: var(--text-body);
    }

    .check-list svg {
        flex: 0 0 22px;
        width: 22px;
        height: 22px;
        color: var(--accent);
        margin-top: 2px;
    }

    .media-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 920px;
        margin: 0 auto;
    }

    .faq-card {
        background: var(--card);
        border: 1px solid var(--card-border);
        border-radius: 18px;
        margin-bottom: 14px;
        transition: border-color .22s ease, background .22s ease;
    }

    .faq-card:hover {
        border-color: rgba(139, 92, 246, .3);
    }

    .faq-card summary {
        list-style: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        padding: 20px 24px;
        color: var(--text-strong);
        font-size: 17px;
        font-weight: 700;
        line-height: 1.5;
        user-select: none;
    }

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

    .faq-card summary::marker {
        content: "";
    }

    .faq-card .faq-icon {
        position: relative;
        flex: 0 0 30px;
        width: 30px;
        height: 30px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 9px;
        border: 1px solid rgba(139, 92, 246, .35);
        color: #D9C8FF;
        font-style: normal;
        font-size: 22px;
        font-weight: 400;
        transition: transform .25s ease, background .25s ease;
    }

    .faq-card[open] .faq-icon {
        transform: rotate(45deg);
        background: rgba(139, 92, 246, .16);
    }

    .faq-card .faq-answer {
        padding: 0 28px 26px 24px;
        color: var(--text-body);
        line-height: 1.9;
        font-size: 15.5px;
    }

    /* ===== CTA banner ===== */
    .cta-banner {
        position: relative;
        display: flex;
        align-items: center;
        border-radius: 30px;
        overflow: hidden;
        padding: 64px;
        background-image:
            linear-gradient(118deg, rgba(124, 58, 237, .97), rgba(219, 39, 119, .92)),
            url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        box-shadow: 0 22px 44px rgba(109, 40, 217, .18);
    }

    .cta-content {
        position: relative;
        z-index: 2;
        max-width: 720px;
    }

    .cta-content .pill {
        border-color: rgba(255, 255, 255, .35);
        background: rgba(255, 255, 255, .14);
        color: #fff;
        margin-bottom: 18px;
    }

    .cta-content h2 {
        color: #fff;
        font-size: clamp(30px, 3.6vw, 44px);
        font-weight: 900;
        line-height: 1.25;
        letter-spacing: -.5px;
        margin-bottom: 18px;
    }

    .cta-content p {
        color: rgba(255, 255, 255, .9);
        font-size: 17px;
        line-height: 1.9;
        margin-bottom: 30px;
    }

    .cta-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }

    .cta-banner .btn-primary {
        background: #fff;
        color: #7C3AED;
        border-color: transparent;
        box-shadow: 0 10px 26px rgba(0, 0, 0, .18);
    }

    .cta-banner .btn-primary:hover {
        background: #f7f1ff;
        box-shadow: 0 14px 34px rgba(0, 0, 0, .24);
        transform: translateY(-2px);
    }

    .cta-banner .btn-secondary {
        border-color: rgba(255, 255, 255, .65);
        color: #fff;
        background: rgba(255, 255, 255, .06);
    }

    .cta-banner .btn-secondary:hover {
        border-color: #fff;
        background: rgba(255, 255, 255, .14);
    }

    /* ===== mobile panel ===== */
    .mobile-panel {
        position: fixed;
        inset: 0;
        z-index: 300;
        background: var(--bg-section);
        display: flex;
        flex-direction: column;
        visibility: hidden;
        transform: translateX(-100%);
        transition: transform .3s ease-in-out, visibility .3s ease;
    }

    .mobile-panel.open {
        visibility: visible;
        transform: translateX(0);
    }

    .mobile-panel-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 80px;
        padding: 0 20px;
        border-bottom: 1px solid var(--card-border);
    }

    .mobile-panel-header .logo-home {
        position: static;
        transform: none;
        top: auto;
        left: auto;
    }

    .mobile-close-btn {
        width: 44px;
        height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--card-border);
        border-radius: 12px;
        background: var(--card);
        color: var(--text-strong);
    }

    .mobile-panel-links {
        flex: 1;
        overflow-y: auto;
        padding: 24px 22px 40px;
    }

    .mobile-panel-links a {
        display: flex;
        align-items: center;
        min-height: 54px;
        padding: 0 12px;
        border-bottom: 1px solid rgba(148, 163, 184, .1);
        color: var(--text-body);
        font-size: 17px;
        font-weight: 600;
        transition: color .2s ease, background .2s ease;
    }

    .mobile-panel-links a:hover,
    .mobile-panel-links a.active {
        color: var(--text-strong);
        background: rgba(139, 92, 246, .1);
    }

    .mobile-panel-cta {
        margin: 24px 0 0;
        display: flex;
        justify-content: center;
    }

    /* ===== footer ===== */
    .site-footer {
        background: #05060B;
        border-top: 1px solid rgba(148, 163, 184, .1);
        padding: 72px 0 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
        gap: 48px;
        padding-bottom: 52px;
    }

    .footer-brand p {
        max-width: 320px;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.9;
        margin-top: 20px;
    }

    .footer-heading {
        color: var(--text-strong);
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 18px;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .footer-links a {
        display: inline-flex;
        align-items: center;
        color: var(--text-muted);
        font-size: 15px;
        transition: color .2s ease, transform .2s ease;
        width: fit-content;
    }

    .footer-links a::before {
        content: "";
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
        margin-right: 9px;
        opacity: .4;
        transition: opacity .2s ease;
    }

    .footer-links a:hover {
        color: var(--text-strong);
        transform: translateX(2px);
    }

    .footer-links a:hover::before {
        opacity: 1;
    }

    .footer-contact-item {
        display: flex;
        align-items: flex-start;
        gap: 8px;
        color: var(--text-muted);
        font-size: 15px;
        line-height: 1.7;
        margin-bottom: 14px;
    }

    .footer-contact-item span {
        color: var(--text-body);
        font-weight: 600;
    }

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        padding: 22px 0;
        border-top: 1px solid rgba(148, 163, 184, .1);
        color: var(--text-muted);
        font-size: 13px;
    }

    .footer-bottom p {
        margin: 0;
    }

    /* ===== responsive ===== */
    @media (max-width: 1199px) {
        .nav-group-left,
        .nav-group-right {
            gap: 20px;
        }

        .nav-link {
            font-size: 14.5px;
        }
    }

    @media (max-width: 1100px) {
        .nav-group-left,
        .nav-group-right {
            display: none;
        }

        .menu-btn {
            display: inline-flex;
        }

        .header-inner {
            justify-content: space-between;
        }

        .logo-home {
            left: 50%;
            right: auto;
            transform: translateX(-50%);
        }
    }

    @media (max-width: 767px) {
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }

        .hero-inner {
            padding: 150px 20px 70px;
        }

        .section {
            padding: 60px 0;
        }

        .section-head-row {
            flex-direction: column;
            gap: 17px;
            align-items: flex-start;
            margin-bottom: 34px;
        }

        .section-desc,
        .center-title .section-desc {
            max-width: 100%;
        }

        .hero-title {
            font-size: 38px;
        }

        .hero-sub {
            font-size: 16px;
        }

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

        .hero-actions .btn {
            width: 100%;
        }

        .hero-stats {
            grid-template-columns: 1fr;
            margin-top: 40px;
        }

        .hero-stat-item {
            border-right: 0;
            border-bottom: 1px solid rgba(148, 163, 184, .1);
        }

        .hero-stat-item:last-child {
            border-bottom: 0;
        }

        .feature-card-grid,
        .media-block {
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

        .feature-body {
            padding: 22px;
        }

        .feature-media {
            aspect-ratio: 16 / 10.5;
        }

        .cta-banner {
            padding: 32px 24px;
            border-radius: 24px;
        }

        .cta-actions {
            flex-direction: column;
        }

        .cta-actions .btn {
            width: 100%;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 30px;
        }

        .footer-brand {
            grid-column: 1;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 6px;
        }
    }

    @media (max-width: 480px) {
        .logo-text {
            font-size: 17px;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            font-size: 16px;
        }

        .hero-kicker {
            font-size: 13px;
        }

        .hero-title {
            font-size: 33px;
        }

        .section-title {
            font-size: 28px;
        }

        .feature-body h3 {
            font-size: 21px;
        }
    }

/* roulang page: category3 */
:root {
  --bg: #080A11;
  --bg-section: #0E111B;
  --card: #141926;
  --card-hover: #1B2233;
  --card-border: rgba(148,163,184,0.14);
  --brand-violet: #8B5CF6;
  --brand-purple: #7C3AED;
  --brand-magenta: #DB2777;
  --brand-pink: #EC4899;
  --accent: #22D3EE;
  --text-strong: #F8FAFC;
  --text-body: #CBD2E0;
  --text-muted: #94A3B8;
  --radius-card: 20px;
  --shadow-card: 0 6px 24px rgba(0,0,0,0.28);
  --shadow-glow: 0 16px 36px rgba(109,40,217,0.18);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

::selection { background: rgba(139,92,246,.35); color: var(--text-strong); }

.site-container {
  width: min(100% - 40px, 1320px);
  margin-left: auto;
  margin-right: auto;
}

.section {
  padding-top: 96px;
  padding-bottom: 96px;
}

.brand-text {
  background: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 80;
  height: 80px;
  background: rgba(8,10,17,0.94);
  border-bottom: 1px solid rgba(148,163,184,0.12);
}

.header-inner {
  position: relative;
  height: 80px;
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  align-items: center;
  gap: 16px;
}

.nav-group-left,
.nav-group-right {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.nav-group-left { justify-content: flex-start; }
.nav-group-right { justify-content: flex-end; }

.logo-home {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 14px;
  white-space: nowrap;
  transition: background .2s ease;
}

.logo-home:hover { background: rgba(139,92,246,.08); }

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #7C3AED, #DB2777);
  color: #fff;
  font-size: 20px;
  font-weight: 900;
  box-shadow: 0 0 0 1px rgba(255,255,255,.1), 0 8px 20px rgba(124,58,237,.35);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--text-strong);
}

.logo-text em {
  font-style: normal;
  background: linear-gradient(135deg, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-link {
  position: relative;
  padding: 8px 12px;
  color: #B9C2D4;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  transition: color .2s ease, background .2s ease;
}

.nav-link:hover {
  color: var(--text-strong);
  background: rgba(139,92,246,.08);
}

.nav-link.active {
  color: var(--text-strong);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #7C3AED, #DB2777);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 14px;
  font-weight: 700;
  padding: 13px 28px;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  border: 0;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #7C3AED, #DB2777);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.22), 0 10px 28px rgba(168,85,247,.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 16px 36px rgba(219,39,119,.3);
}

.btn-primary:active { transform: translateY(0); box-shadow: 0 6px 18px rgba(168,85,247,.22); }

.btn-ghost {
  background: transparent;
  color: var(--text-strong);
  border: 1px solid rgba(148,163,184,.45);
}

.btn-ghost:hover {
  border-color: #f0abfc;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(0,0,0,.2);
}

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

.btn-lg { padding: 16px 34px; font-size: 17px; border-radius: 16px; }
.btn-sm { padding: 9px 20px; font-size: 14px; }

.menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: transparent;
  border: 1px solid rgba(148,163,184,.2);
  color: var(--text-strong);
  cursor: pointer;
}

.menu-btn svg { pointer-events: none; }

.page-hero {
  position: relative;
  padding: 170px 0 80px;
  min-height: 720px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(8,10,17,.96) 0%, rgba(8,10,17,.88) 38%, rgba(8,10,17,.5) 100%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -120px auto;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(219,39,119,.22), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.hero-content { position: relative; z-index: 2; max-width: 740px; }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(139,92,246,.35);
  background: rgba(139,92,246,.1);
  color: #DDD6FE;
  border-radius: 999px;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero-crumbs {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.hero-crumbs span { color: rgba(148,163,184,.4); }

.hero-crumbs a:hover { color: #fff; }

.hero-content h1 {
  margin: 22px 0 20px;
  color: var(--text-strong);
  font-size: 58px;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -.01em;
}

.hero-content .subtitle {
  max-width: 640px;
  margin: 0 0 34px;
  font-size: 19px;
  line-height: 1.8;
  color: var(--text-body);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

.hero-stats {
  margin-top: 70px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 640px;
}

.stat-card {
  background: rgba(20,25,38,.72);
  border: 1px solid rgba(148,163,184,.15);
  padding: 18px 20px;
  border-radius: 18px;
}

.stat-card .stat-value {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--text-strong);
  line-height: 1.2;
  margin-bottom: 4px;
}

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

.eyebrow-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: .16em;
  font-weight: 700;
  color: var(--brand-violet);
  text-transform: uppercase;
}

.eyebrow-label::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #7C3AED, #DB2777);
}

.section-head {
  max-width: 780px;
  margin: 0 0 42px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head .eyebrow-label { margin-bottom: 10px; }

.section-head h2 {
  color: var(--text-strong);
  font-size: 40px;
  line-height: 1.24;
  font-weight: 800;
  margin: 8px 0 14px;
}

.section-head p { color: var(--text-muted); font-size: 17px; line-height: 1.85; margin: 0; }

.bg-panel {
  background: var(--bg-section);
  border-top: 1px solid rgba(148,163,184,.07);
  border-bottom: 1px solid rgba(148,163,184,.07);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 28px 26px;
  min-height: 230px;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease, background .25s ease;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: auto;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #7C3AED, #DB2777, transparent);
  transform: scaleX(.25);
  transform-origin: left;
  transition: transform .3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(139,92,246,.5);
  background: var(--card-hover);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, #7C3AED, #DB2777);
  margin-bottom: 20px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2), 0 10px 24px rgba(124,58,237,.2);
}

.feature-icon.cyan {
  background: linear-gradient(135deg, #0E7490, #22D3EE);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 10px 24px rgba(34,211,238,.2);
}

.feature-card h3 {
  color: var(--text-strong);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 12px;
  line-height: 1.4;
}

.feature-card p {
  margin: 0;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 24px;
}

.step-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  overflow: hidden;
  padding: 28px 26px 30px;
  transition: box-shadow .25s ease, transform .25s ease, border-color .25s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34,211,238,.32);
  box-shadow: 0 14px 32px rgba(34,211,238,.1);
}

.step-num {
  font-size: 58px;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(139,92,246,.65);
}

.step-card h3 {
  color: var(--text-strong);
  font-size: 22px;
  margin: 14px 0 10px;
  font-weight: 700;
}

.step-card p { margin: 0; color: var(--text-muted); font-size: 15px; line-height: 1.8; }

.split-block {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 60px;
  align-items: center;
}

.split-block.flip { grid-template-columns: 5fr 7fr; }

.split-media {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(148,163,184,.14);
  box-shadow: 0 24px 60px rgba(0,0,0,.36);
}

.split-media img { width: 100%; height: 100%; min-height: 380px; object-fit: cover; }

.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8,10,17,.12), rgba(8,10,17,.02));
  pointer-events: none;
}

.split-content h2 {
  color: var(--text-strong);
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin: 12px 0 16px;
}

.split-content .lead { color: var(--body, var(--text-body)); font-size: 17px; margin: 0 0 20px; line-height: 1.85; }
.split-content p { color: var(--text-muted); line-height: 1.85; }

.level-list { margin-top: 10px; list-style: none; padding: 0; }

.level-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid rgba(148,163,184,.1);
}

.level-item:last-child { border-bottom-color: transparent; }

.level-badge {
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 14px;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #64748B, #94A3B8);
}

.level-badge.gold { background: linear-gradient(135deg, #B45309, #F59E0B); }
.level-badge.dark { background: linear-gradient(135deg, #0F172A, #7C3AED); }

.level-item h3 { color: var(--text-strong); font-size: 18px; font-weight: 700; margin: 0 0 4px; }
.level-item p { margin: 0; color: var(--text-muted); font-size: 15px; line-height: 1.7; }

.point-feature-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 18px 0 26px;
}

.point-feature {
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 18px;
  border-radius: 16px;
}

.point-feature strong { display: block; color: var(--text-strong); font-size: 17px; margin-bottom: 6px; }
.point-feature span { display: block; color: var(--text-muted); font-size: 14px; line-height: 1.6; }

.point-note {
  display: flex;
  gap: 12px;
  background: rgba(34,211,238,.06);
  border: 1px solid rgba(34,211,238,.2);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 15px;
  color: #A5F3FC;
}

.faq-wrap { max-width: 900px; margin: 0 auto; }

.faq-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  margin-bottom: 16px;
  transition: border-color .25s ease, background .25s ease;
}

.faq-item[open] {
  border-color: rgba(139,92,246,.4);
  background: var(--card-hover);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  color: var(--text-strong);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
}

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

.faq-item summary::after {
  content: "+";
  flex: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(139,92,246,.12);
  color: #d8b4fe;
  font-size: 22px;
  font-weight: 400;
  transition: transform .3s ease, background .3s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  background: linear-gradient(135deg, #7C3AED, #DB2777);
  color: #fff;
}

.faq-answer {
  padding: 0 26px 24px;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.85;
}

.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  background: linear-gradient(135deg, #6D28D9 0%, #A21CAF 54%, #DB2777 100%);
  box-shadow: 0 16px 46px rgba(147,51,234,.28);
  padding: 58px;
  color: #fff;
}

.cta-band::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  right: -60px;
  top: -120px;
  background: radial-gradient(circle, rgba(255,255,255,.15), transparent 65%);
  border-radius: 50%;
}

.cta-band::after {
  content: "";
  position: absolute;
  width: 400px;
  height: 400px;
  right: 0px;
  bottom: -220px;
  background: radial-gradient(circle, rgba(34,211,238,.2), transparent 62%);
  border-radius: 50%;
}

.cta-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.2fr .8fr; gap: 28px; align-items: center; }

.cta-kicker { font-size: 13px; letter-spacing: .16em; opacity: .8; font-weight: 700; }

.cta-band h2 { color: #fff; font-size: 33px; font-weight: 900; line-height: 1.3; margin: 12px 0 16px; }

.cta-band p { color: rgba(255,255,255,.86); font-size: 16px; line-height: 1.8; margin: 0; }

.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: flex-end; }

.btn-white {
  background: #fff;
  color: #6D28D9;
}

.btn-white:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(255,255,255,.24); }

.btn-ghost-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.5);
}

.btn-ghost-light:hover { background: rgba(255,255,255,.1); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,.16); }

.cta-band-text p { margin-bottom: 0; }

.site-footer {
  background: #06080F;
  border-top: 1px solid rgba(148,163,184,.12);
  padding-top: 66px;
  padding-bottom: 32px;
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
  gap: 42px;
}

.footer-brand .logo-home {
  position: static;
  transform: none;
  justify-content: flex-start;
}

.footer-brand p {
  margin: 18px 0 0;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.85;
  max-width: 380px;
}

.footer-heading {
  color: var(--text-strong);
  font-weight: 700;
  font-size: 16px;
  margin: 4px 0 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 15px;
  transition: color .2s ease, transform .2s ease;
  width: fit-content;
}

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

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 10px;
}

.footer-contact-item span {
  width: 34px;
  height: 34px;
  flex: none;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(139,92,246,.1);
  color: #c4b5fd;
  font-size: 15px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid rgba(148,163,184,.08);
  margin-top: 42px;
  padding-top: 26px;
  font-size: 14px;
  color: #7D889D;
}

.mobile-menu {
  display: block;
  position: fixed;
  z-index: 79;
  top: 80px;
  left: 0;
  right: 0;
  background: #0A0D17;
  border-bottom: 1px solid rgba(148,163,184,.12);
  padding: 12px 20px 26px;
  transform: translateY(-160%);
  transition: transform .35s ease;
  visibility: hidden;
}

.mobile-menu.open {
  transform: translateY(0);
  visibility: visible;
}

.mobile-menu a {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 10px 12px;
  color: var(--text-body);
  font-weight: 600;
  border-bottom: 1px solid rgba(148,163,184,.06);
}

.mobile-menu a.active { color: var(--text-strong); }
.mobile-menu a:hover { background: rgba(139,92,246,.08); color: #fff; border-radius: 12px; }

.mobile-menu .btn { margin-top: 18px; width: 100%; }

@media (max-width: 1199px) {
  .split-block, .split-block.flip { grid-template-columns: 1fr 1fr; gap: 32px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1023.98px) {
  .nav-group-left, .nav-group-right { display: none; }
  .menu-btn { display: inline-flex; }
  .menu-btn[style*="display:none"] { display: none; }
  .logo-text { font-size: 18px; }
  .page-hero { min-height: 0; padding: 140px 0 60px; }
  .hero-content h1 { font-size: 44px; }
  .split-block, .split-block.flip { grid-template-columns: 1fr; }
  .split-media img { max-height: 320px; }
  .section-head h2 { font-size: 32px; }
  .cta-inner { grid-template-columns: 1fr; }
  .cta-actions { justify-content: flex-start; }
}

@media (max-width: 767px) {
  .section { padding-top: 64px; padding-bottom: 64px; }
  .feature-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { grid-template-columns: 1fr; margin-top: 40px; }
  .split-media img { min-height: 280px; }
  .point-feature-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { flex-direction: column; }
  .page-hero .hero-content h1 { font-size: 36px; }
  .cta-band { padding: 36px 26px; }
  .cta-actions .btn { width: 100%; }
  .faq-item summary { font-size: 15px; padding: 20px; }
  .faq-answer { padding: 0 20px 22px; }
}

@media (max-width: 520px) {
  .site-container { width: min(100% - 24px, 1320px); }
  .logo-home { gap: 6px; }
  .logo-icon { width: 34px; height: 34px; font-size: 17px; }
  .logo-text { font-size: 16px; }
  .page-hero { padding-top: 124px; }
  .hero-content h1 { font-size: 32px; }
  .hero-content .subtitle { font-size: 17px; }
  .eyebrow-label { font-size: 11px; }
  .section-head h2 { font-size: 28px; }
  .section-head p { font-size: 15px; }
}

/* roulang page: category4 */
:root {
            --bg: #080A11;
            --bg-section: #0E111B;
            --card: #141926;
            --card-hover: #1B2233;
            --card-border: rgba(148, 163, 184, 0.14);
            --brand-violet: #8B5CF6;
            --brand-purple: #7C3AED;
            --brand-magenta: #DB2777;
            --brand-pink: #EC4899;
            --accent: #22D3EE;
            --text-strong: #F8FAFC;
            --text-body: #CBD2E0;
            --text-muted: #94A3B8;
            --radius: 20px;
            --radius-lg: 28px;
            --shadow: 0 6px 24px rgba(0, 0, 0, 0.28);
            --shadow-brand: 0 16px 36px rgba(109, 40, 217, 0.18);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

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

        button {
            font-family: inherit;
        }

        h1, h2, h3, h4, p {
            margin-top: 0;
        }

        h1, h2, h3, h4 {
            color: var(--text-strong);
            font-weight: 800;
            line-height: 1.25;
        }

        .container {
            width: 100%;
            max-width: 1320px;
            margin: 0 auto;
            padding-left: 32px;
            padding-right: 32px;
        }

        .section-block {
            padding: 96px 0;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 80;
            background: rgba(11, 13, 22, 0.97);
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
        }

        .header-inner {
            position: relative;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-group-left,
        .nav-group-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-group-left {
            justify-content: flex-start;
        }

        .nav-group-right {
            justify-content: flex-end;
        }

        .logo-home {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 8px 22px rgba(124, 58, 237, 0.32);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-strong);
            letter-spacing: 0.02em;
        }

        .logo-text em {
            font-style: normal;
            font-weight: 900;
            background: linear-gradient(120deg, var(--brand-purple), var(--brand-pink));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .nav-link {
            position: relative;
            padding: 10px 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 10px;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .nav-link:hover {
            color: var(--text-strong);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-link.active {
            color: var(--text-strong);
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--brand-purple), var(--brand-magenta));
        }

        .nav-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .menu-btn {
            display: none;
            background: transparent;
            border: none;
            padding: 8px;
            margin: 0 -6px;
            border-radius: 10px;
            color: var(--text-strong);
            cursor: pointer;
            line-height: 0;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 0;
            border-radius: 14px;
            padding: 14px 28px;
            font-weight: 600;
            font-size: 16px;
            line-height: 1.4;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
            color: #fff;
            box-shadow: 0 8px 22px rgba(124, 58, 237, 0.28);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(219, 39, 119, 0.34);
        }

        .btn-primary:focus-visible,
        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.28);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid rgba(203, 213, 240, 0.25);
            color: var(--text-strong);
        }

        .btn-outline:hover {
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(34, 211, 238, 0.12);
        }

        .page-hero {
            position: relative;
            display: flex;
            align-items: center;
            min-height: 660px;
            padding: 168px 0 88px;
            background:
                linear-gradient(78deg, rgba(8, 10, 17, 0.97) 0%, rgba(34, 22, 72, 0.9) 48%, rgba(58, 12, 60, 0.72) 100%),
                radial-gradient(circle at 78% 26%, rgba(124, 58, 237, 0.2), transparent 26%),
                url('/assets/images/backpic/back-2.webp') center 52% / cover no-repeat;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.45), rgba(219, 39, 119, 0.4), transparent);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .breadcrumb a {
            transition: color 0.2s ease;
        }

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

        .crumb-sep {
            opacity: 0.5;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 15px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #C4B5FD;
            background: rgba(139, 92, 246, 0.12);
            border: 1px solid rgba(139, 92, 246, 0.28);
            margin-bottom: 22px;
        }

        .hero-title {
            max-width: 920px;
            margin-bottom: 22px;
            font-size: clamp(40px, 5vw, 66px);
            line-height: 1.12;
            font-weight: 900;
            letter-spacing: -0.01em;
            color: #fff;
        }

        .gradient-text {
            background: linear-gradient(120deg, #C4B5FD, var(--brand-pink), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: inline-block;
        }

        .hero-subtitle {
            max-width: 720px;
            margin-bottom: 32px;
            font-size: 18px;
            line-height: 1.8;
            color: var(--text-body);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 16px;
            max-width: 760px;
            margin-top: 54px;
        }

        .hero-stat {
            background: rgba(20, 25, 38, 0.72);
            border: 1px solid rgba(148, 163, 184, 0.16);
            border-radius: var(--radius);
            padding: 20px 22px;
            min-height: 88px;
            box-shadow: var(--shadow);
        }

        .stat-value {
            display: block;
            font-size: 28px;
            font-weight: 900;
            line-height: 1.1;
            color: var(--text-strong);
            font-variant-numeric: tabular-nums;
            background: linear-gradient(135deg, #C4B5FD, var(--brand-pink));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .stat-caption {
            display: block;
            margin-top: 6px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(30px, 3.4vw, 42px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-strong);
            max-width: 780px;
            margin-bottom: 18px;
        }

        .section-intro {
            max-width: 860px;
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 0;
        }

        .content-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 48px;
        }

        .content-heading .section-title {
            margin-bottom: 0;
        }

        .content-heading .section-intro {
            max-width: 520px;
        }

        .channel-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 20px;
        }

        .channel-card {
            position: relative;
            display: flex;
            flex-direction: column;
            background: linear-gradient(180deg, #151B29, #111624);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 30px 26px 28px;
            min-height: 100%;
            box-shadow: var(--shadow);
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }

        .channel-card:hover {
            background: var(--card-hover);
            border-color: rgba(139, 92, 246, 0.5);
            transform: translateY(-4px);
            box-shadow: var(--shadow-brand);
        }

        .channel-card-top {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            margin-bottom: 20px;
        }

        .card-num {
            font-size: 38px;
            font-weight: 900;
            line-height: 1;
            color: rgba(148, 163, 184, 0.22);
            font-variant-numeric: tabular-nums;
            transition: color 0.25s ease;
        }

        .channel-card:hover .card-num {
            color: rgba(139, 92, 246, 0.6);
        }

        .chips {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            gap: 6px;
        }

        .chip-violet {
            color: #C4B5FD;
            background: rgba(139, 92, 246, 0.13);
            border: 1px solid rgba(139, 92, 246, 0.24);
        }

        .chip-pink {
            color: #F9A8D4;
            background: rgba(236, 72, 153, 0.12);
            border: 1px solid rgba(236, 72, 153, 0.24);
        }

        .chip-cyan {
            color: #67E8F9;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.22);
        }

        .chip-slate {
            color: var(--text-muted);
            background: rgba(148, 163, 184, 0.08);
            border: 1px solid rgba(148, 163, 184, 0.2);
        }

        .channel-card h3 {
            font-size: 20px;
            margin: 0 0 10px;
            font-weight: 700;
            color: var(--text-strong);
        }

        .channel-card p {
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .card-link {
            position: relative;
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #E9D5FF;
            font-size: 14px;
            font-weight: 600;
            padding: 6px 10px;
            margin-left: -10px;
            border-radius: 10px;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .card-link:hover {
            color: var(--accent);
            background: rgba(34, 211, 238, 0.08);
        }

        .card-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .arrow {
            display: inline-block;
            transition: transform 0.2s ease;
            font-weight: 700;
        }

        .card-link:hover .arrow {
            transform: translateX(4px);
        }

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

        .split-block {
            display: grid;
            grid-template-columns: 1.35fr 1fr;
            gap: 72px;
            align-items: center;
        }

        .media-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow);
        }

        .media-frame img {
            width: 100%;
            height: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        .media-frame::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(125deg, rgba(124, 58, 237, 0.2), transparent 44%);
            pointer-events: none;
        }

        .check-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }

        .check-list li {
            position: relative;
            padding-left: 40px;
            margin-bottom: 16px;
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.75;
        }

        .check-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 2px;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
            color: #fff;
            font-size: 13px;
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
        }

        .text-title {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-strong);
            margin-bottom: 18px;
        }

        .text-body-copy {
            font-size: 17px;
            color: var(--text-body);
            margin: 16px 0 0;
            line-height: 1.85;
        }

        .flow-strip {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 16px;
            margin-top: 34px;
        }

        .flow-step {
            background: var(--card);
            border: 1px solid var(--card-border);
            border-radius: 18px;
            padding: 20px;
            min-height: 92px;
        }

        .flow-step strong {
            display: block;
            font-size: 15px;
            color: var(--text-strong);
            font-weight: 700;
            margin-bottom: 6px;
        }

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

        .value-point {
            position: relative;
            background: var(--card);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 30px;
            transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .value-point:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, 0.45);
            box-shadow: var(--shadow-brand);
        }

        .point-index {
            font-size: 15px;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 0.08em;
            margin-bottom: 18px;
            display: block;
        }

        .value-point h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 12px;
        }

        .value-point p {
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 20px;
            margin-top: 44px;
        }

        .mini-link {
            color: #C4B5FD;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease;
        }

        .mini-link:hover {
            color: var(--accent);
        }

        .faq-section {
            background: var(--bg-section);
            border-top: 1px solid var(--card-border);
        }

        .faq-wrap {
            max-width: 940px;
            margin: 0 auto;
        }

        .faq-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .faq-title .section-title {
            margin-left: auto;
            margin-right: auto;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--card-border);
            border-radius: 18px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(139, 92, 246, 0.4);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 24px;
            font-size: 17px;
            line-height: 1.5;
            color: var(--text-strong);
            font-weight: 600;
        }

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

        .faq-item summary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: -2px;
            border-radius: 18px;
        }

        .faq-icon {
            flex: 0 0 30px;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(219, 39, 119, 0.2));
            color: #e9d5ff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 600;
            line-height: 1;
            transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
        }

        .faq-icon::before {
            content: "+";
        }

        details[open] .faq-icon {
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-magenta));
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px 24px 24px;
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.85;
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            margin-top: -4px;
            padding-top: 18px;
            animation: faqFade 0.3s ease;
        }

        @keyframes faqFade {
            from {
                opacity: 0;
                transform: translateY(-6px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .cta-wrap {
            padding-bottom: 0;
        }

        .cta-banner {
            position: relative;
            background: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);
            border-radius: 32px;
            overflow: hidden;
            padding: 64px;
            color: #fff;
            box-shadow: 0 24px 60px rgba(124, 58, 237, 0.32);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .cta-banner h2 {
            font-size: clamp(28px, 3.6vw, 44px);
            color: #fff;
            font-weight: 900;
            line-height: 1.25;
            max-width: 640px;
        }

        .cta-banner p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            margin: 18px 0 30px;
            max-width: 580px;
        }

        .cta-banner .btn-primary {
            background: #fff;
            color: #7C3AED;
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.14);
        }

        .cta-banner .btn-primary:hover {
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.22);
            transform: translateY(-2px);
        }

        .cta-banner .btn-outline {
            border-color: rgba(255, 255, 255, 0.45);
            color: #fff;
        }

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

        .cta-image {
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            height: 100%;
            width: 40%;
            object-fit: cover;
            opacity: 0.24;
            z-index: 1;
            pointer-events: none;
        }

        .site-footer {
            background: #07090F;
            padding: 64px 0 30px;
            border-top: 1px solid var(--card-border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.7fr 1fr 1fr 1.3fr;
            gap: 44px;
            padding-bottom: 44px;
        }

        .footer-brand p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.85;
            margin: 18px 0 0;
        }

        .footer-heading {
            color: var(--text-strong);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            display: inline-block;
            color: var(--text-muted);
            font-size: 15px;
            width: fit-content;
            transition: color 0.2s ease;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 12px;
        }

        .footer-contact-item span {
            font-weight: 800;
            color: #C4B5FD;
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.12);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding-top: 26px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .mobile-menu {
            display: none;
        }

        @media (max-width: 1023px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }

            .menu-btn {
                display: inline-flex;
            }

            .nav-group-left,
            .nav-group-right {
                display: none;
            }

            .logo-home {
                left: 50%;
                transform: translateX(-50%);
            }

            .header-inner {
                justify-content: flex-start;
            }

            .mobile-menu.open {
                display: block;
                position: fixed;
                left: 0;
                right: 0;
                top: 80px;
                bottom: auto;
                background: #0D1020;
                border-bottom: 1px solid var(--card-border);
                box-shadow: 0 24px 48px rgba(0, 0, 0, 0.36);
                z-index: 79;
                padding: 16px 24px 28px;
            }

            .mobile-menu nav {
                display: flex;
                flex-direction: column;
            }

            .mobile-menu a {
                min-height: 48px;
                display: flex;
                align-items: center;
                justify-content: flex-start;
                padding: 10px 12px;
                font-size: 16px;
                color: var(--text-strong);
                border-radius: 12px;
                transition: background 0.2s ease, color 0.2s ease;
            }

            .mobile-menu a:hover {
                background: rgba(255, 255, 255, 0.04);
                color: var(--accent);
            }

            .mobile-menu a.active {
                color: #C4B5FD;
                background: rgba(139, 92, 246, 0.1);
            }

            .mobile-menu .btn-primary {
                justify-content: center;
                margin-top: 8px;
            }
        }

        @media (max-width: 900px) {
            .section-block {
                padding: 72px 0;
            }

            .content-heading {
                flex-direction: column;
                align-items: flex-start;
                gap: 18px;
                margin-bottom: 36px;
            }

            .channel-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .split-block {
                grid-template-columns: 1fr;
                gap: 44px;
            }

            .value-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .cta-banner {
                padding: 44px 34px;
            }

            .cta-image {
                width: 60%;
            }
        }

        @media (max-width: 680px) {
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }

            .section-block {
                padding: 62px 0;
            }

            .page-hero {
                min-height: auto;
                padding: 132px 0 60px;
            }

            .hero-title {
                font-size: 38px;
            }

            .hero-subtitle {
                font-size: 16px;
            }

            .hero-stats {
                grid-template-columns: 1fr;
                gap: 12px;
                max-width: 100%;
                margin-top: 40px;
            }

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

            .flow-strip {
                grid-template-columns: 1fr;
            }

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

            .cta-banner {
                padding: 36px 24px;
                border-radius: 24px;
            }

            .cta-banner .btn {
                width: 100%;
                margin-bottom: 12px;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
                padding-top: 20px;
            }

            .cta-image {
                opacity: 0.12;
            }
        }