/* roulang page: index */
:root {
    --color-primary: #6D28D9;
    --color-primary-light: #8B5CF6;
    --color-accent: #2EE6A8;
    --color-hot: #FACC15;
    --color-bg: #0A0C10;
    --color-surface: #141A24;
    --color-surface-2: #1C2430;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-text: #F2F6FA;
    --color-text-secondary: #A9B3C0;
    --color-text-disabled: #6B7684;
    --gradient-primary: linear-gradient(135deg, #6D28D9 0%, #2EE6A8 100%);
    --radius-xl: 24px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --radius-tag: 6px;
    --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 16px 40px rgba(109, 40, 217, 0.25);
    --container-max: 1200px;
    --header-height: 72px;
    --font-body: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Orbitron', 'Arial Narrow', 'Bahnschrift', 'DIN Alternate', sans-serif;
    --transition-base: all .2s ease;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img {
    max-width: 100%;
    display: block;
    border: 0;
}
a {
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition-base);
}
a:hover, a:focus {
    color: var(--color-accent);
}
ul, ol {
    list-style: none;
}
button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    color: inherit;
}
input, textarea, select {
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text);
    background: #0E141B;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    height: 44px;
    padding: 0 14px;
    outline: none;
    transition: var(--transition-base);
    width: 100%;
}
input:focus, textarea:focus, select:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(46, 230, 168, 0.25);
}
a:focus-visible, button:focus-visible {
    outline: 2px solid rgba(46, 230, 168, 0.6);
    outline-offset: 3px;
}
.site-header:focus-within,
.main-nav a:focus-visible,
.btn:focus-visible,
.faq-q:focus-visible {
    outline-color: rgba(46, 230, 168, 0.6);
}
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}
.row {
    max-width: var(--container-max);
}
.columns {
    padding-left: 16px;
    padding-right: 16px;
}
section {
    padding: 72px 0;
}
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}
.section-header h2 {
    font-size: 32px;
    font-weight: 900;
    letter-spacing: 0.5px;
    line-height: 1.3;
    margin: 0;
}
.section-header h2::after {
    content: "";
    display: block;
    width: 48px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 4px;
    margin-top: 12px;
}
.section-link {
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid transparent;
    padding-bottom: 4px;
}
.section-link:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    font-size: 15px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: var(--transition-base);
    white-space: nowrap;
    cursor: pointer;
    text-align: center;
}
.btn--primary {
    background: var(--gradient-primary);
    color: #fff;
}
.btn--primary:hover, .btn--primary:focus {
    background: linear-gradient(135deg, #7c3aed 0%, #3ee6a8 100%);
    color: #fff;
    box-shadow: 0 8px 24px rgba(109, 40, 217, 0.35);
    transform: translateY(-1px);
}
.btn--primary:active {
    transform: translateY(1px);
    box-shadow: none;
}
.btn--ghost {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-text);
}
.btn--ghost:hover, .btn--ghost:focus {
    border-color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
}
.btn--lg {
    height: 52px;
    padding: 0 32px;
    font-size: 17px;
    border-radius: var(--radius-md);
}
.btn--block {
    width: 100%;
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: var(--color-accent);
    background: rgba(46, 230, 168, 0.1);
    border: 1px solid rgba(46, 230, 168, 0.25);
    border-radius: var(--radius-tag);
    padding: 3px 8px;
    line-height: 1.4;
}
.badge--hot {
    color: var(--color-hot);
    background: rgba(250, 204, 21, 0.12);
    border-color: rgba(250, 204, 21, 0.3);
}
.badge--small {
    font-size: 11px;
    padding: 2px 6px;
}
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 4px 12px;
    line-height: 1.5;
    transition: var(--transition-base);
}
.tag:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(10, 12, 16, 0.96);
    border-bottom: 1px solid var(--color-border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--gradient-primary);
    color: #fff;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(109, 40, 217, 0.4);
}
.logo-text {
    font-size: 21px;
    font-weight: 900;
    letter-spacing: 0.5px;
    color: #fff;
    line-height: 1;
}
.main-nav ul {
    display: flex;
    align-items: center;
    gap: 28px;
}
.main-nav a {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-secondary);
    padding: 8px 0;
    position: relative;
    transition: var(--transition-base);
}
.main-nav a:hover, .main-nav a:focus {
    color: #fff;
}
.main-nav a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 2px;
    transition: width .25s ease;
}
.main-nav a:hover::after {
    width: 100%;
}
.main-nav .is-active a {
    color: #fff;
}
.main-nav .is-active a::after {
    width: 100%;
}
.header-cta {
    margin-left: 8px;
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    background: var(--color-surface);
    font-size: 20px;
    transition: var(--transition-base);
}
.nav-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.mobile-drawer {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 12, 16, 0.98);
    padding: 32px 24px;
    z-index: 110;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all .3s ease;
    border-top: 1px solid var(--color-border);
}
.mobile-drawer.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}
.mobile-drawer ul {
    margin-bottom: 24px;
}
.mobile-drawer a {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
}
.mobile-drawer a:hover {
    color: var(--color-accent);
}
.mobile-drawer .btn {
    margin-top: 16px;
    width: 100%;
}
.hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center 30%;
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    padding: 72px 0;
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 12, 16, 0.94) 0%, rgba(20, 26, 36, 0.78) 55%, rgba(10, 12, 16, 0.42) 100%);
    z-index: 1;
}
.hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 56px;
    align-items: end;
    width: 100%;
}
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-accent);
    background: rgba(46, 230, 168, 0.1);
    border: 1px solid rgba(46, 230, 168, 0.2);
    border-radius: 999px;
    padding: 6px 16px;
    margin-bottom: 20px;
}
.hero-main h1 {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.25;
    color: #fff;
    letter-spacing: 1px;
    margin-bottom: 20px;
}
.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 560px;
    margin-bottom: 32px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}
.hero-data-card {
    background: rgba(20, 26, 36, 0.75);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-card);
    backdrop-filter: none;
}
.hero-data-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.hero-data-item {
    text-align: center;
    padding: 8px 4px;
}
.hero-data-number {
    display: block;
    font-family: var(--font-display);
    font-size: 30px;
    font-weight: 900;
    color: #fff;
    line-height: 1.2;
}
.hero-data-number em {
    font-style: normal;
    font-size: 16px;
    color: var(--color-accent);
    margin-left: 2px;
}
.hero-data-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 4px;
}
.hero-data-divider {
    height: 1px;
    background: var(--color-border);
    margin: 16px 0;
}
.hero-data-foot {
    font-size: 13px;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}
.hero-data-foot i {
    color: var(--color-accent);
}
.stats-strip {
    padding: 32px 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.stat-badge {
    background: linear-gradient(135deg, rgba(109, 40, 217, 0.12) 0%, rgba(46, 230, 168, 0.06) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    text-align: center;
    position: relative;
    transition: var(--transition-base);
}
.stat-badge:hover {
    border-color: rgba(46, 230, 168, 0.4);
    transform: translateY(-2px);
}
.stat-badge__number {
    font-family: var(--font-display);
    font-size: 34px;
    font-weight: 900;
    color: #fff;
    line-height: 1.2;
}
.stat-badge__number span {
    font-size: 14px;
    color: var(--color-accent);
    margin-left: 2px;
}
.stat-badge__label {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 6px;
}
.featured {
    background: var(--color-bg);
}
.featured-card {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    height: 100%;
    transition: var(--transition-base);
    box-shadow: var(--shadow-card);
}
.featured-card:hover, .featured-card:focus {
    border-color: rgba(46, 230, 168, 0.35);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    outline: none;
}
.featured-card__cover {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    background: var(--color-surface-2);
}
.featured-card__cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.featured-card:hover .featured-card__cover img {
    transform: scale(1.04);
}
.featured-card__cover .badge {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
}
.featured-card__body {
    padding: 24px;
}
.featured-card__body h3 {
    font-size: 20px;
    font-weight: 800;
    line-height: 1.5;
    margin-bottom: 8px;
    color: var(--color-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.featured-card:hover .featured-card__body h3 {
    color: var(--color-accent);
}
.featured-card__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.featured-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--color-text-disabled);
}
.featured-card__link {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.featured-card__link i {
    transition: transform .2s ease;
}
.featured-card:hover .featured-card__link i {
    transform: translateX(4px);
}
.featured-card--wide .featured-card__body {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.featured-card--wide .featured-card__body h3 {
    font-size: 24px;
    -webkit-line-clamp: 2;
}
.featured-row {
    margin-bottom: 24px;
}
.latest-section {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}
.latest-grid {
    display: flex;
    gap: 32px;
}
.latest-feature {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-base);
    height: 100%;
    box-shadow: var(--shadow-card);
}
.latest-feature:hover {
    border-color: rgba(46, 230, 168, 0.35);
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.latest-feature__cover {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-surface-2);
}
.latest-feature__cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.latest-feature:hover .latest-feature__cover img {
    transform: scale(1.03);
}
.latest-feature__body {
    padding: 24px;
}
.latest-feature__body h3 {
    font-size: 22px;
    font-weight: 800;
    margin: 12px 0 10px;
    line-height: 1.5;
    color: var(--color-text);
}
.latest-feature:hover .latest-feature__body h3 {
    color: var(--color-accent);
}
.latest-feature__body p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.latest-feature__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--color-text-disabled);
}
.latest-feature__meta span {
    color: var(--color-accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.latest-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.latest-item {
    padding: 18px 8px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: var(--transition-base);
    position: relative;
}
.latest-item:last-child {
    border-bottom: none;
}
.latest-item:hover {
    padding-left: 16px;
    background: rgba(255, 255, 255, 0.02);
}
.latest-item:hover::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    bottom: 12px;
    width: 3px;
    border-radius: 3px;
    background: var(--color-accent);
}
.latest-item h4 {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--color-text);
}
.latest-item h4 a {
    color: var(--color-text);
}
.latest-item h4 a:hover {
    color: var(--color-accent);
}
.latest-item time {
    font-size: 13px;
    color: var(--color-text-disabled);
}
.latest-empty {
    width: 100%;
    padding: 60px 24px;
    text-align: center;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-xl);
    color: var(--color-text-disabled);
    font-size: 15px;
}
.latest-empty i {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--color-text-disabled);
    display: block;
}
.testimonials {
    background: linear-gradient(rgba(10, 12, 16, 0.88), rgba(10, 12, 16, 0.88)), url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    position: relative;
}
.testimonials-inner {
    position: relative;
    z-index: 1;
}
.testimonial-viewport {
    overflow: hidden;
    margin: 0 -8px;
}
.testimonial-track {
    display: flex;
    transition: transform .45s ease;
}
.testimonial-slide {
    flex: 0 0 33.333%;
    padding: 0 8px;
}
.testimonial-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 28px;
    box-shadow: var(--shadow-card);
    height: 100%;
    position: relative;
}
.testimonial-card__quote {
    font-size: 40px;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 8px;
    font-family: Georgia, serif;
}
.testimonial-card__text {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 20px;
}
.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
}
.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #fff;
    font-weight: 700;
}
.testimonial-author__name {
    font-weight: 700;
    color: #fff;
    font-size: 15px;
    line-height: 1.3;
}
.testimonial-author__role {
    font-size: 12px;
    color: var(--color-text-disabled);
}
.testimonial-stars {
    color: var(--color-hot);
    font-size: 13px;
    margin-left: auto;
}
.testimonial-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 28px;
}
.testimonial-arrow {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}
.testimonial-arrow:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: scale(1.05);
}
.testimonial-dots {
    display: flex;
    gap: 8px;
}
.testimonial-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: var(--transition-base);
}
.testimonial-dot.is-active {
    background: var(--color-accent);
    width: 24px;
    border-radius: 8px;
}
.assurance {
    background: var(--color-bg);
}
.assurance-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.assurance-item {
    padding: 24px 16px;
    border-right: 1px solid var(--color-border);
    text-align: left;
    transition: var(--transition-base);
}
.assurance-item:last-child {
    border-right: none;
}
.assurance-item:hover {
    background: rgba(255, 255, 255, 0.02);
}
.assurance-item__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(109, 40, 217, 0.15);
    color: var(--color-primary-light);
    font-size: 20px;
    margin-bottom: 16px;
    transition: var(--transition-base);
}
.assurance-item:hover .assurance-item__icon {
    background: var(--gradient-primary);
    color: #fff;
}
.assurance-item h3 {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 6px;
}
.assurance-item p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}
.cta-section {
    position: relative;
    padding: 40px 0 72px;
}
.cta-box {
    background: linear-gradient(135deg, rgba(109, 40, 217, 0.9), rgba(46, 230, 168, 0.65)), url('/assets/images/backpic/back-3.webp');
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-xl);
    padding: 64px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}
.cta-box h2 {
    font-size: 38px;
    font-weight: 900;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
}
.cta-box p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 640px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.cta-box .btn--ghost {
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}
.cta-box .btn--ghost:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.15);
}
.faq {
    background: var(--color-bg);
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition-base);
}
.faq-item:hover, .faq-item.active {
    border-color: rgba(46, 230, 168, 0.3);
}
.faq-q {
    display: flex;
    align-items: center;
    gap: 20px;
    width: 100%;
    padding: 20px 24px;
    text-align: left;
    color: var(--color-text);
    transition: var(--transition-base);
}
.faq-q:hover {
    background: rgba(255, 255, 255, 0.03);
}
.faq-q-num {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 900;
    color: var(--color-accent);
    background: rgba(46, 230, 168, 0.1);
    border-radius: 8px;
    min-width: 40px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
}
.faq-q-text {
    flex: 1;
    font-size: 17px;
    font-weight: 700;
}
.faq-q-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: transform .25s ease;
}
.faq-item.active .faq-q-icon {
    transform: rotate(45deg);
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease;
}
.faq-item.active .faq-a {
    max-height: 320px;
}
.faq-a-inner {
    padding: 0 24px 24px 84px;
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.75;
}
.site-footer {
    background: #07080C;
    border-top: 1px solid var(--color-border);
    padding: 56px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 40px;
}
.footer-brand__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand__logo .logo-mark {
    width: 36px;
    height: 36px;
    font-size: 17px;
}
.footer-brand p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
    max-width: 320px;
}
.footer-social {
    display: flex;
    gap: 12px;
}
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: 16px;
    transition: var(--transition-base);
}
.footer-social a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 20px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul a,
.footer-col ul li {
    color: var(--color-text-secondary);
    font-size: 14px;
}
.footer-col ul a:hover {
    color: var(--color-accent);
}
.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
    text-align: center;
    color: var(--color-text-disabled);
    font-size: 13px;
}
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .hero-data-card {
        max-width: 520px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    section {
        padding: 48px 0;
    }
    .main-nav,
    .header-cta {
        display: none;
    }
    .nav-toggle {
        display: inline-flex;
    }
    .mobile-drawer {
        display: block;
    }
    .hero {
        min-height: calc(100vh - 60px);
        padding: 48px 0;
    }
    .hero-main h1 {
        font-size: 34px;
    }
    .hero-subtitle {
        font-size: 16px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .stat-badge__number {
        font-size: 28px;
    }
    .assurance-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .assurance-item {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        text-align: center;
    }
    .assurance-item:nth-child(even) {
        border-left: 1px solid var(--color-border);
    }
    .assurance-item:nth-child(3),
    .assurance-item:nth-child(4) {
        border-bottom: none;
    }
    .latest-grid {
        flex-direction: column;
        gap: 24px;
    }
    .testimonial-slide {
        flex-basis: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .cta-box {
        padding: 48px 24px;
    }
    .cta-box h2 {
        font-size: 28px;
    }
    .section-header h2 {
        font-size: 26px;
    }
    .faq-a-inner {
        padding-left: 22px;
    }
    .faq-q {
        padding: 16px 16px;
        gap: 12px;
    }
    .faq-q-num {
        min-width: 34px;
        height: 28px;
        font-size: 12px;
    }
    .faq-q-text {
        font-size: 15px;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .hero-main h1 {
        font-size: 28px;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .btn--lg {
        height: 48px;
        padding: 0 20px;
        font-size: 15px;
    }
    .stats-grid {
        gap: 8px;
    }
    .stat-badge {
        padding: 14px 10px;
    }
    .stat-badge__number {
        font-size: 24px;
    }
    .section-link {
        font-size: 13px;
    }
    .featured-card__body {
        padding: 16px;
    }
    .featured-card__body h3 {
        font-size: 17px;
    }
    .cta-box {
        padding: 36px 16px;
    }
    .cta-box h2 {
        font-size: 24px;
    }
    .cta-box p {
        font-size: 15px;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .hero-data-card {
        padding: 16px;
    }
    .hero-data-number {
        font-size: 24px;
    }
    .hero-data-label {
        font-size: 11px;
    }
    .footer-brand p {
        max-width: 100%;
    }
}

/* roulang page: category1 */
:root {
            --color-primary: #6D28D9;
            --color-primary-light: #8B5CF6;
            --color-accent: #2EE6A8;
            --color-hot: #FACC15;
            --color-bg: #0A0C10;
            --color-surface: #141A24;
            --color-surface-2: #1C2430;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-text: #F2F6FA;
            --color-text-secondary: #A9B3C0;
            --color-text-disabled: #6B7684;
            --gradient-main: linear-gradient(135deg, #6D28D9 0%, #2EE6A8 100%);
            --radius-lg: 24px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(109, 40, 217, 0.25);
            --font-title: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-num: "Orbitron", "Arial Narrow", "Microsoft YaHei", sans-serif;
        }

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

        html { scroll-behavior: smooth; }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
        a:hover { color: inherit; }
        ul, ol { margin: 0; padding: 0; list-style: none; }
        button { font-family: inherit; cursor: pointer; }

        /* ---------- 容器 ---------- */
        .row {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .row .column, .row .columns { padding: 0 12px; }

        @media (max-width: 640px) {
            .row { padding: 0 16px; }
            .row .column, .row .columns { padding: 0 8px; }
        }

        /* ---------- 按钮 ---------- */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            border: none;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .btn--primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 18px rgba(109, 40, 217, 0.35);
        }
        .btn--primary:hover { filter: brightness(1.1); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(46, 230, 168, 0.3); }
        .btn--primary:active { transform: translateY(1px); box-shadow: none; }
        .btn--ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--color-text);
        }
        .btn--ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.06); transform: translateY(-2px); }
        .btn--ghost:active { transform: translateY(1px); }
        .btn--lg { height: 52px; padding: 0 32px; font-size: 18px; border-radius: 12px; }
        .btn--block { width: 100%; }
        a:focus, button:focus { outline: 2px solid rgba(46, 230, 168, 0.6); outline-offset: 3px; }

        /* ---------- Header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: rgba(10, 12, 16, 0.96);
            border-bottom: 1px solid var(--color-border);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            gap: 24px;
        }
        .site-logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .logo-mark {
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--gradient-main);
            border-radius: 12px;
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 4px 16px rgba(109, 40, 217, 0.4);
            position: relative;
        }
        .logo-mark i { font-size: 15px; margin-right: 1px; }
        .logo-text {
            font-size: 20px;
            font-weight: 900;
            color: #fff;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }
        .main-nav ul { display: flex; gap: 32px; }
        .main-nav a {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color 0.2s ease;
            display: inline-block;
            line-height: 1.4;
        }
        .main-nav a:hover { color: #fff; }
        .main-nav .is-active a { color: #fff; }
        .main-nav .is-active a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
            box-shadow: 0 0 8px rgba(46, 230, 168, 0.6);
        }
        .header-actions { display: flex; align-items: center; gap: 14px; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 0;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform 0.25s ease;
        }
        .nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .nav-cta-mobile { display: none; }

        @media (max-width: 1024px) {
            .site-header { height: 60px; }
            .header-inner { padding: 0 16px; gap: 12px; }
            .nav-toggle { display: inline-flex; }
            .header-cta-desktop { display: none; }
            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: #0A0C10;
                border-bottom: 1px solid var(--color-border);
                padding: 20px 24px 24px;
                display: none;
                z-index: 99;
            }
            .main-nav.open { display: block; }
            .main-nav ul { flex-direction: column; gap: 18px; }
            .main-nav .is-active a::after { left: 0; right: auto; width: 32px; }
            .nav-cta-mobile { display: block; margin-top: 24px; }
            .logo-text { font-size: 17px; }
            .logo-mark { width: 36px; height: 36px; border-radius: 10px; font-size: 17px; }
        }

        /* ---------- Hero ---------- */
        .page-hero {
            position: relative;
            min-height: 42vh;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            padding: 64px 0;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 12, 16, 0.94) 20%, rgba(109, 40, 217, 0.45) 75%, rgba(46, 230, 168, 0.2));
        }
        .page-hero .row { position: relative; z-index: 2; width: 100%; }
        .page-hero__breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--color-text-secondary); margin-bottom: 16px; }
        .page-hero__breadcrumb a:hover { color: var(--color-accent); }
        .page-hero__breadcrumb i { font-size: 11px; color: var(--color-text-disabled); }
        .hero-kicker {
            display: inline-block;
            font-family: var(--font-num);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 3px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .page-hero h1 {
            font-size: 52px;
            font-weight: 900;
            margin: 0 0 16px;
            color: #fff;
            line-height: 1.2;
        }
        .page-hero p {
            max-width: 560px;
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: rgba(20, 26, 36, 0.8);
            border: 1px solid rgba(46, 230, 168, 0.3);
            border-radius: 16px;
            padding: 14px 22px;
            margin-top: 28px;
        }
        .hero-badge__num { font-family: var(--font-num); font-size: 32px; font-weight: 900; color: var(--color-accent); line-height: 1; }
        .hero-badge__label { font-size: 13px; color: var(--color-text-secondary); line-height: 1.4; }
        @media (max-width: 640px) {
            .page-hero { min-height: auto; padding: 48px 0; }
            .page-hero h1 { font-size: 36px; }
            .page-hero p { font-size: 15px; }
            .hero-badge__num { font-size: 26px; }
        }

        /* ---------- 数据徽章条 ---------- */
        .stats-bar { padding: 36px 0; border-bottom: 1px solid var(--color-border); }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .stat-card {
            background: linear-gradient(135deg, rgba(109, 40, 217, 0.14), rgba(46, 230, 168, 0.06));
            border: 1px solid var(--color-border);
            border-radius: 16px;
            padding: 22px 16px;
            text-align: center;
            transition: border-color 0.2s ease, transform 0.2s ease;
        }
        .stat-card:hover { border-color: rgba(46, 230, 168, 0.3); transform: translateY(-3px); }
        .stat-card i { font-size: 18px; color: var(--color-accent); margin-bottom: 8px; }
        .stat-num {
            display: block;
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 900;
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }
        .stat-label { font-size: 13px; color: var(--color-text-secondary); margin-top: 6px; }
        @media (max-width: 640px) {
            .stats-bar { padding: 24px 0; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-num { font-size: 26px; }
            .stat-card { padding: 16px 10px; }
        }

        /* ---------- 分类主区 ---------- */
        .race-section { padding: 72px 0; }
        .section-head { margin-bottom: 40px; }
        .section-head--center { text-align: center; }
        .section-head h2 {
            font-size: 32px;
            font-weight: 900;
            margin: 0 0 8px;
            line-height: 1.3;
        }
        .section-head p { color: var(--color-text-secondary); font-size: 15px; margin: 0; }

        /* 横向大图列表条 */
        .race-list { display: flex; flex-direction: column; gap: 28px; }
        .race-item {
            display: grid;
            grid-template-columns: minmax(240px, 40%) 1fr;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
        }
        .race-item:hover {
            transform: translateY(-4px);
            border-color: rgba(46, 230, 168, 0.35);
            box-shadow: var(--shadow-hover);
        }
        .race-item__media { position: relative; min-height: 180px; overflow: hidden; background: var(--color-surface-2); }
        .race-item__media img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; transition: transform 0.3s ease; }
        .race-item:hover .race-item__media img { transform: scale(1.04); }
        .race-item__index {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            font-family: var(--font-num);
            font-size: 18px;
            font-weight: 900;
            color: var(--color-accent);
            background: rgba(10, 12, 16, 0.85);
            padding: 4px 12px;
            border-radius: 8px;
            line-height: 1.3;
            border: 1px solid rgba(46, 230, 168, 0.2);
        }
        .badge-hot {
            position: absolute;
            top: 14px;
            right: 14px;
            z-index: 2;
            font-size: 12px;
            font-weight: 700;
            color: #000;
            background: var(--color-hot);
            border-radius: 999px;
            padding: 4px 10px;
            line-height: 1.2;
            box-shadow: 0 2px 10px rgba(250, 204, 21, 0.4);
        }
        .race-item__content { padding: 26px; display: flex; flex-direction: column; justify-content: center; gap: 10px; }
        .race-item__meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--color-text-secondary); flex-wrap: wrap; }
        .race-item__meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--color-text-disabled); }
        .race-item__title {
            font-size: 24px;
            font-weight: 900;
            line-height: 1.4;
            margin: 0;
            color: #fff;
            transition: color 0.2s ease;
        }
        .race-item:hover .race-item__title { color: var(--color-accent); }
        .race-item__summary {
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .race-item__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary-light);
            margin-top: 4px;
            transition: gap 0.2s ease;
        }
        .race-item:hover .race-item__link { gap: 10px; color: var(--color-accent); }

        @media (max-width: 768px) {
            .race-section { padding: 48px 0; }
            .race-item { grid-template-columns: 1fr; }
            .race-item__media { min-height: 200px; position: relative; }
            .race-item__content { padding: 22px 20px; }
            .race-item__title { font-size: 20px; }
        }

        /* ---------- 侧栏 ---------- */
        .sidebar { display: flex; flex-direction: column; gap: 24px; }
        .side-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 24px;
            transition: border-color 0.2s ease;
        }
        .side-card:hover { border-color: rgba(46, 230, 168, 0.2); }
        .side-card h3 {
            font-size: 18px;
            font-weight: 900;
            margin: 0 0 18px;
            color: #fff;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--color-border);
        }
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
        .tag {
            display: inline-block;
            font-size: 13px;
            color: var(--color-text-secondary);
            background: var(--color-surface-2);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            padding: 6px 14px;
            transition: all 0.2s ease;
            line-height: 1.4;
        }
        .tag:hover { color: #fff; border-color: var(--color-accent); background: rgba(46, 230, 168, 0.1); }
        .side-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 12px;
        }
        .side-list li:last-child { border-bottom: none; padding-bottom: 0; }
        .side-list li:first-child { padding-top: 0; }
        .side-list a { font-size: 14px; color: var(--color-text); line-height: 1.5; }
        .side-list a:hover { color: var(--color-accent); }
        .side-list span { font-size: 12px; color: var(--color-text-disabled); white-space: nowrap; flex-shrink: 0; }

        @media (max-width: 1024px) {
            .sidebar { margin-top: 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        }
        @media (max-width: 640px) {
            .sidebar { grid-template-columns: 1fr; }
        }

        /* ---------- 保障条 ---------- */
        .feature-strip { padding: 72px 0; background: var(--color-surface); }
        .feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
        .feature-item { text-align: center; padding: 0 12px; position: relative; }
        .feature-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: -16px;
            top: 20%;
            bottom: 20%;
            width: 1px;
            background: var(--color-border);
        }
        .feature-item__icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            background: linear-gradient(135deg, rgba(109, 40, 217, 0.2), rgba(46, 230, 168, 0.1));
            border: 1px solid rgba(46, 230, 168, 0.25);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--color-accent);
        }
        .feature-item h3 { font-size: 16px; font-weight: 800; margin: 0 0 8px; color: #fff; }
        .feature-item p { font-size: 13px; color: var(--color-text-secondary); margin: 0; line-height: 1.6; }
        @media (max-width: 1024px) {
            .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
            .feature-item:nth-child(2)::after { display: none; }
        }
        @media (max-width: 640px) {
            .feature-strip { padding: 48px 0; }
            .feature-grid { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
            .feature-item::after { display: none; }
        }

        /* ---------- CTA ---------- */
        .cta-section { padding: 72px 0; }
        .cta-card {
            background: linear-gradient(135deg, rgba(109, 40, 217, 0.35), rgba(46, 230, 168, 0.12)), var(--color-surface);
            border: 1px solid rgba(46, 230, 168, 0.25);
            border-radius: 24px;
            text-align: center;
            padding: 56px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(109, 40, 217, 0.25), transparent 70%);
            pointer-events: none;
        }
        .cta-card h2 { font-size: 34px; font-weight: 900; margin: 0 0 12px; color: #fff; }
        .cta-card p { font-size: 17px; color: var(--color-text-secondary); margin: 0 0 32px; max-width: 560px; margin-left: auto; margin-right: auto; }
        .cta-card .btn { margin: 0 8px 8px; }
        @media (max-width: 640px) {
            .cta-section { padding: 48px 0; }
            .cta-card { padding: 40px 20px; }
            .cta-card h2 { font-size: 27px; }
            .cta-card p { font-size: 15px; }
            .cta-card .btn { width: 100%; margin: 6px 0; }
        }

        /* ---------- FAQ ---------- */
        .faq-section { padding: 72px 0; }
        .faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 16px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }
        .faq-item.active { border-color: rgba(46, 230, 168, 0.35); box-shadow: 0 6px 24px rgba(109, 40, 217, 0.15); }
        .faq-item__question {
            width: 100%;
            background: none;
            border: none;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            text-align: left;
            line-height: 1.5;
        }
        .faq-item__num {
            font-family: var(--font-num);
            font-size: 15px;
            font-weight: 900;
            color: var(--color-accent);
            background: rgba(46, 230, 168, 0.08);
            border-radius: 6px;
            padding: 4px 8px;
            line-height: 1.2;
            flex-shrink: 0;
        }
        .faq-item__icon { margin-left: auto; color: var(--color-text-secondary); transition: transform 0.25s ease, color 0.25s ease; flex-shrink: 0; }
        .faq-item.active .faq-item__icon { transform: rotate(45deg); color: var(--color-accent); }
        .faq-item__answer { display: none; padding: 0 24px 22px 64px; font-size: 15px; color: var(--color-text-secondary); line-height: 1.8; border-top: 1px solid var(--color-border); margin-top: 4px; padding-top: 16px; }
        @media (max-width: 640px) {
            .faq-section { padding: 48px 0; }
            .faq-item__question { padding: 16px 18px; font-size: 15px; gap: 12px; }
            .faq-item__num { font-size: 13px; padding: 3px 6px; }
            .faq-item__answer { padding: 14px 18px 18px 46px; }
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #07080C;
            border-top: 1px solid var(--color-border);
            padding-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand__logo { display: flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 900; color: #fff; }
        .footer-brand p { color: var(--color-text-secondary); font-size: 14px; margin: 16px 0 20px; max-width: 300px; line-height: 1.8; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            transition: all 0.2s ease;
            font-size: 15px;
        }
        .footer-social a:hover { color: #fff; border-color: var(--color-accent); background: rgba(46, 230, 168, 0.06); }
        .footer-col h4 { font-size: 16px; font-weight: 800; color: #fff; margin: 0 0 16px; }
        .footer-col li { margin-bottom: 10px; color: var(--color-text-secondary); font-size: 14px; line-height: 1.7; }
        .footer-col a { color: var(--color-text-secondary); font-size: 14px; }
        .footer-col a:hover { color: var(--color-accent); }
        .footer-bottom { border-top: 1px solid var(--color-border); padding: 24px 0; }
        .footer-bottom p { margin: 0; color: var(--color-text-disabled); font-size: 13px; text-align: center; }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 640px) {
            .site-footer { padding-top: 48px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        }

/* roulang page: article */
/* ========== Design Tokens ========== */
        :root {
            --color-primary: #6D28D9;
            --color-primary-light: #8B5CF6;
            --color-accent: #2EE6A8;
            --color-hot: #FACC15;
            --color-bg: #0A0C10;
            --color-surface: #141A24;
            --color-surface-2: #1C2430;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-text: #F2F6FA;
            --color-text-secondary: #A9B3C0;
            --color-text-disabled: #6B7684;
            --grad-main: linear-gradient(135deg, #6D28D9 0%, #2EE6A8 100%);
            --radius-lg: 24px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(109, 40, 217, 0.25);
            --font-num: 'Orbitron', 'DIN Alternate', 'Bahnschrift', 'Arial Narrow', sans-serif;
            --transition-base: all .2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid rgba(46, 230, 168, 0.6);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== Layout ========== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            max-width: 860px;
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            border: none;
            white-space: nowrap;
            transition: var(--transition-base);
            line-height: 1;
        }

        .btn-primary {
            background: var(--grad-main);
            color: #fff;
            background-size: 150% 150%;
        }

        .btn-primary:hover {
            filter: brightness(1.12);
            transform: translateY(-1px);
            background-position: 80% 50%;
        }

        .btn-primary:active {
            transform: translateY(1px);
            filter: brightness(0.96);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .btn-lg {
            height: 52px;
            padding: 0 34px;
            font-size: 17px;
            border-radius: 12px;
        }

        /* ========== Site Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(10, 12, 16, 0.96);
            border-bottom: 1px solid var(--color-border);
        }

        .site-header .container {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

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

        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--grad-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-num);
            font-weight: 900;
            font-size: 22px;
            color: #fff;
            line-height: 1;
            box-shadow: 0 0 20px rgba(109, 40, 217, 0.35);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 900;
            letter-spacing: 0.5px;
            color: var(--color-text);
        }

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

        .main-nav ul {
            display: flex;
            gap: 32px;
            margin: 0;
        }

        .main-nav li {
            margin: 0;
        }

        .main-nav a {
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            display: inline-block;
        }

        .main-nav a:hover {
            color: var(--color-text);
        }

        .main-nav .is-active a {
            color: var(--color-text);
            font-weight: 700;
        }

        .main-nav .is-active a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: transform .2s ease, opacity .2s ease;
        }

        /* ========== Article Hero ========== */
        .article-hero {
            padding: 64px 0 56px;
            background:
                linear-gradient(to right, rgba(10, 12, 16, 0.94) 0%, rgba(10, 12, 16, 0.78) 60%, rgba(10, 12, 16, 0.56) 100%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            border-bottom: 1px solid var(--color-border);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--color-text-disabled);
            margin-bottom: 28px;
        }

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

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

        .breadcrumb .current {
            color: var(--color-text-disabled);
            max-width: 340px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .breadcrumb-sep {
            color: var(--color-text-disabled);
            opacity: .5;
        }

        .article-h1 {
            font-size: 40px;
            line-height: 1.35;
            font-weight: 900;
            margin: 0 0 20px;
            letter-spacing: 0.5px;
            color: var(--color-text);
            max-width: 900px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            color: var(--color-text-secondary);
        }

        .meta-item i {
            color: var(--color-accent);
            width: 15px;
            text-align: center;
            font-size: 14px;
        }

        /* ========== Article Body ========== */
        .article-section {
            padding: 56px 0 72px;
        }

        .article-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            margin-bottom: 40px;
            background: var(--color-surface);
        }

        .article-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        /* ========== Article Typography ========== */
        .article-content {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(242, 246, 250, 0.92);
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 900;
            margin: 56px 0 18px;
            letter-spacing: .5px;
            position: relative;
            padding-left: 16px;
            line-height: 1.4;
            color: var(--color-text);
        }

        .article-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            bottom: 10px;
            width: 4px;
            border-radius: 4px;
            background: var(--grad-main);
        }

        .article-content h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 44px 0 14px;
            line-height: 1.5;
            color: var(--color-text);
        }

        .article-content p {
            font-size: 17px;
            line-height: 1.9;
            margin-bottom: 24px;
            color: rgba(242, 246, 250, 0.92);
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 24px 28px;
        }

        .article-content ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .article-content ol li {
            list-style: decimal;
            margin-bottom: 8px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-accent);
            background: var(--color-surface);
            padding: 22px 26px;
            margin: 32px 0;
            border-radius: 0 14px 14px 0;
            font-size: 17px;
            line-height: 1.8;
            color: var(--color-text-secondary);
        }

        .article-content blockquote p {
            margin-bottom: 0;
            color: var(--color-text-secondary);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 32px 0;
            background: var(--color-surface);
            border-radius: 12px;
            overflow: hidden;
            display: block;
            overflow-x: auto;
        }

        .article-content th,
        .article-content td {
            padding: 12px 18px;
            border: 1px solid var(--color-border);
            text-align: left;
            font-size: 15px;
            line-height: 1.7;
        }

        .article-content th {
            background: var(--color-surface-2);
            color: var(--color-text);
            font-weight: 700;
        }

        .article-content td {
            color: var(--color-text-secondary);
        }

        .article-content img {
            border-radius: 14px;
            margin: 28px 0;
            width: 100%;
            height: auto;
        }

        .article-content pre {
            background: #0D1117;
            border: 1px solid var(--color-border);
            border-radius: 14px;
            padding: 22px;
            overflow-x: auto;
            font-family: 'SF Mono', Consolas, 'Courier New', monospace;
            margin: 32px 0;
            color: var(--color-text);
            font-size: 14px;
            line-height: 1.7;
        }

        .article-content code {
            font-family: 'SF Mono', Consolas, 'Courier New', monospace;
            font-size: 14px;
            color: var(--color-accent);
            background: var(--color-surface-2);
            padding: 2px 7px;
            border-radius: 5px;
        }

        .article-content pre code {
            padding: 0;
            background: transparent;
            color: inherit;
        }

        /* ========== Tags ========== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 48px;
            padding-top: 26px;
            border-top: 1px solid var(--color-border);
        }

        .tag {
            display: inline-block;
            padding: 6px 15px;
            border-radius: 999px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: var(--transition-base);
        }

        .tag:hover {
            color: var(--color-accent);
            border-color: var(--color-accent);
            background: var(--color-surface-2);
        }

        /* ========== Article Pagination ========== */
        .article-pagination {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 36px;
        }

        .pagination-card {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 20px 24px;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            transition: var(--transition-base);
        }

        .pagination-card:hover {
            border-color: var(--color-accent);
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .pagination-card .dir {
            font-size: 12px;
            color: var(--color-text-disabled);
            letter-spacing: 1px;
        }

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

        .pagination-card.next {
            text-align: right;
        }

        /* ========== Missing State ========== */
        .article-missing {
            text-align: center;
            padding: 90px 24px;
        }

        .article-missing h1 {
            font-size: 30px;
            font-weight: 900;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .article-missing .btn {
            margin-top: 8px;
        }

        /* ========== Related Section ========== */
        .related-section {
            padding: 72px 0;
            background: #0B0E13;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .section-title {
            font-size: 32px;
            font-weight: 900;
            text-align: center;
            margin-bottom: 44px;
            letter-spacing: 0.5px;
            color: var(--color-text);
        }

        .related-grid {
            max-width: 100%;
            margin: 0 -12px;
            display: flex;
            flex-wrap: wrap;
        }

        .related-col {
            padding: 0 12px;
            margin-bottom: 24px;
        }

        .related-card {
            display: block;
            background: var(--color-surface);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--color-border);
            height: 100%;
            transition: var(--transition-base);
        }

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

        .rc-cover {
            overflow: hidden;
            background: var(--color-surface-2);
        }

        .rc-cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform .3s ease;
        }

        .related-card:hover .rc-cover img {
            transform: scale(1.03);
        }

        .rc-info {
            padding: 18px 20px 22px;
        }

        .rc-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--color-accent);
            background: rgba(46, 230, 168, 0.1);
            border: 1px solid rgba(46, 230, 168, 0.2);
            border-radius: 999px;
            padding: 3px 12px;
            margin-bottom: 12px;
        }

        .rc-info h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.55;
            color: var(--color-text);
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .rc-meta {
            font-size: 13px;
            color: var(--color-text-disabled);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .rc-meta i {
            color: var(--color-accent);
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 56px 0 72px;
        }

        .cta-panel {
            position: relative;
            background: linear-gradient(135deg, rgba(109, 40, 217, 0.34), rgba(46, 230, 168, 0.13)), var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 52px 40px 48px;
            text-align: center;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(46, 230, 168, 0.15), transparent 70%);
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: 30px;
            font-weight: 900;
            margin-bottom: 14px;
            letter-spacing: .5px;
            color: var(--color-text);
        }

        .cta-panel p {
            font-size: 17px;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #07080C;
            border-top: 1px solid var(--color-border);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 14px;
            color: var(--color-text);
        }

        .footer-brand p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 22px;
        }

        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: var(--transition-base);
        }

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

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--color-text);
        }

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

        .footer-col ul li a {
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 2px;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            color: var(--color-text-disabled);
            font-size: 13px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .related-col {
                flex: 0 0 50%;
                max-width: 50%;
            }
        }

        @media (max-width: 768px) {
            .site-header,
            .site-header .container {
                height: 60px;
            }

            .site-header .container {
                padding: 0 16px;
            }

            .brand-name {
                font-size: 16px;
            }

            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 18px;
                border-radius: 10px;
            }

            .header-cta .btn {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: #0D1117;
                border-bottom: 1px solid var(--color-border);
                padding: 12px 0;
                display: none;
                opacity: 0;
                transform: translateY(-10px);
                transition: opacity .2s ease, transform .2s ease;
            }

            .main-nav.open {
                display: block;
                opacity: 1;
                transform: translateY(0);
            }

            .main-nav ul {
                flex-direction: column;
                gap: 0;
                padding: 0 24px;
                margin: 0;
            }

            .main-nav li+li {
                border-top: 1px solid var(--color-border);
            }

            .main-nav a {
                display: block;
                padding: 14px 0;
                font-size: 16px;
            }

            .main-nav .is-active a::after {
                left: 0;
                top: auto;
                bottom: 6px;
                width: 32px;
                height: 3px;
            }

            .article-hero {
                padding: 40px 0 32px;
            }

            .article-h1 {
                font-size: 29px;
            }

            .article-section {
                padding: 40px 0 56px;
            }

            .related-section {
                padding: 48px 0;
            }

            .section-title {
                font-size: 26px;
                margin-bottom: 32px;
            }

            .cta-section {
                padding: 40px 0 56px;
            }

            .cta-panel {
                padding: 40px 24px 36px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }

            .article-pagination {
                grid-template-columns: 1fr;
            }

            .pagination-card.next {
                text-align: left;
            }

            .related-col {
                flex: 0 0 100%;
                max-width: 100%;
            }

            .article-content h2 {
                font-size: 23px;
                padding-left: 14px;
            }

            .article-content h3 {
                font-size: 20px;
            }

            .article-content p {
                font-size: 16px;
                line-height: 1.85;
            }

            .article-meta {
                gap: 14px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #6D28D9;
            --color-primary-light: #8B5CF6;
            --color-accent: #2EE6A8;
            --color-hot: #FACC15;
            --color-bg: #0A0C10;
            --color-surface: #141A24;
            --color-surface-2: #1C2430;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-text: #F2F6FA;
            --color-text-secondary: #A9B3C0;
            --color-text-disabled: #6B7684;
            --gradient-main: linear-gradient(135deg, #6D28D9 0%, #2EE6A8 100%);
            --radius-lg: 24px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 16px 40px rgba(109, 40, 217, 0.25);
            --transition: 200ms ease;
            --font-display: 'Orbitron', 'Arial Narrow', 'Courier New', monospace;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--color-bg);
            color: var(--color-text);
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--color-text);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background var(--transition);
        }

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

        ul {
            list-style: none;
        }

        a:focus-visible,
        button:focus-visible,
        .accordion-title:focus-visible {
            outline: 2px solid rgba(46, 230, 168, 0.6);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--gradient-main);
            color: #fff;
        }

        .btn-primary:hover {
            filter: brightness(1.1);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
        }

        .btn-ghost {
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: transparent;
            color: var(--color-text);
        }

        .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .btn-ghost:active {
            transform: translateY(1px);
        }

        .btn-lg {
            height: 52px;
            padding: 0 32px;
            font-size: 17px;
            border-radius: 12px;
        }

        .btn-sm {
            height: 38px;
            padding: 0 18px;
            font-size: 14px;
            border-radius: 6px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 12, 16, 0.96);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 22px;
            letter-spacing: 0.02em;
            color: var(--color-text);
        }

        .site-logo:hover {
            color: var(--color-text);
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-weight: 900;
            color: #fff;
            font-size: 20px;
        }

        .main-nav ul {
            display: flex;
            gap: 32px;
        }

        .main-nav a {
            font-size: 15px;
            color: var(--color-text-secondary);
            font-weight: 600;
            position: relative;
            padding: 8px 2px;
        }

        .main-nav a:hover {
            color: #fff;
        }

        .main-nav li.is-active a {
            color: var(--color-accent);
        }

        .main-nav li.is-active a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            border-radius: 3px;
            background: var(--color-accent);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-toggle {
            display: none;
            width: 38px;
            height: 38px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
        }

        .mobile-drawer {
            display: none;
        }

        .mobile-drawer.is-open {
            display: block;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            padding: 20px 24px 28px;
            z-index: 99;
        }

        .mobile-drawer ul {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .mobile-drawer a {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-secondary);
            display: block;
            padding: 6px 0;
        }

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

        .mobile-drawer .drawer-cta a {
            color: #fff;
            text-align: center;
            padding: 10px;
            border-radius: 8px;
            background: var(--gradient-main);
        }

        .page-hero {
            min-height: 40vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(10, 12, 16, 0.92) 0%, rgba(10, 12, 16, 0.72) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 72px 0 56px;
            border-bottom: 1px solid var(--color-border);
        }

        .hero-eyebrow {
            font-family: var(--font-display);
            text-transform: uppercase;
            letter-spacing: 0.18em;
            font-size: 13px;
            color: var(--color-accent);
            margin-bottom: 14px;
            display: block;
        }

        .page-hero h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 16px;
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: var(--color-text-secondary);
            max-width: 560px;
            margin-bottom: 28px;
        }

        .hero-stats {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .stat-badge {
            background: rgba(109, 40, 217, 0.15);
            border: 1px solid rgba(109, 40, 217, 0.4);
            border-radius: 12px;
            padding: 18px 24px;
            display: flex;
            align-items: baseline;
            gap: 10px;
            transition: var(--transition);
        }

        .stat-badge:hover {
            border-color: rgba(46, 230, 168, 0.4);
            background: rgba(46, 230, 168, 0.06);
        }

        .stat-num {
            font-family: var(--font-display);
            font-size: 32px;
            font-weight: 900;
            color: var(--color-text);
            line-height: 1;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        .gallery-section {
            padding: 72px 0 56px;
        }

        .section-header {
            margin-bottom: 40px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 900;
            position: relative;
            padding-left: 16px;
        }

        .section-header h2::before {
            content: "";
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 5px;
            border-radius: 4px;
            background: var(--gradient-main);
        }

        .section-header p {
            color: var(--color-text-secondary);
            font-size: 15px;
            max-width: 420px;
        }

        .gallery-grid-row {
            margin-bottom: 32px;
            align-items: stretch;
        }

        .gallery-grid-row .cell {
            margin-bottom: 0;
        }

        .gallery-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
            height: 100%;
        }

        .feature-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            box-shadow: var(--shadow-card);
            height: 100%;
        }

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

        .feature-card .card-media {
            position: relative;
            overflow: hidden;
            background: var(--color-surface-2);
        }

        .feature-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .feature-card.is-large .card-media {
            aspect-ratio: 16 / 9;
        }

        .card-index {
            position: absolute;
            top: 14px;
            left: 14px;
            font-family: var(--font-display);
            font-size: 22px;
            font-weight: 900;
            color: var(--color-accent);
            background: rgba(10, 12, 16, 0.72);
            border-radius: 8px;
            padding: 2px 10px;
            z-index: 2;
            line-height: 1.3;
        }

        .card-tag {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(109, 40, 217, 0.85);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 6px;
            z-index: 2;
            letter-spacing: 0.02em;
        }

        .card-tag.card-hot {
            background: var(--color-hot);
            color: #0A0C10;
        }

        .feature-card .card-body {
            padding: 20px 24px 24px;
        }

        .feature-card h3 {
            font-size: 21px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .feature-card h3 a:hover {
            color: var(--color-accent);
        }

        .feature-card p {
            color: var(--color-text-secondary);
            font-size: 14px;
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12px;
            color: var(--color-text-disabled);
        }

        .card-link {
            color: var(--color-accent);
            font-weight: 600;
            margin-left: auto;
            font-size: 13px;
        }

        .card-link:hover {
            color: #fff;
        }

        .feature-card.is-small {
            display: flex;
            align-items: stretch;
            border-radius: 18px;
            min-height: 148px;
        }

        .feature-card.is-small .card-media {
            width: 130px;
            flex-shrink: 0;
            background: var(--color-surface-2);
        }

        .feature-card.is-small .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-card.is-small .card-body {
            flex: 1;
            padding: 16px 18px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .feature-card.is-small h3 {
            font-size: 17px;
            margin-bottom: 6px;
        }

        .feature-card.is-small p {
            font-size: 13px;
            margin-bottom: 8px;
            -webkit-line-clamp: 2;
        }

        .feature-card.is-small .card-tag {
            top: 10px;
            right: 10px;
            font-size: 11px;
            padding: 3px 8px;
        }

        .feature-card.is-small .card-index {
            top: 10px;
            left: 10px;
            font-size: 16px;
            padding: 1px 8px;
        }

        .audience-section {
            padding: 72px 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .audience-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .audience-card {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            padding: 28px 24px;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            transition: var(--transition);
        }

        .audience-card:hover {
            border-color: rgba(46, 230, 168, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .audience-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(109, 40, 217, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .audience-card h3 {
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .audience-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }

        .guarantee-section {
            padding: 56px 0;
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }

        .guarantee-item {
            padding: 20px 28px;
            border-right: 1px solid var(--color-border);
            display: flex;
            gap: 14px;
            align-items: center;
        }

        .guarantee-item:last-child {
            border-right: none;
        }

        .guarantee-icon {
            font-size: 22px;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .guarantee-item h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 2px;
        }

        .guarantee-item p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        .category-layout {
            padding: 72px 0 40px;
        }

        .category-side .side-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 16px;
            padding: 24px;
            margin-bottom: 24px;
        }

        .side-card h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .side-card h4 .side-line {
            width: 3px;
            height: 16px;
            background: var(--color-accent);
            border-radius: 3px;
        }

        .side-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .side-tags a {
            display: inline-flex;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            background: var(--color-surface-2);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }

        .side-tags a:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .hot-list li {
            display: flex;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
            align-items: flex-start;
        }

        .hot-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .hot-list .hot-num {
            font-family: var(--font-display);
            color: var(--color-accent);
            font-weight: 800;
            font-size: 18px;
            line-height: 1.2;
            min-width: 24px;
        }

        .hot-list .hot-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.45;
        }

        .hot-list .hot-title:hover {
            color: var(--color-accent);
        }

        .hot-list .hot-meta {
            font-size: 12px;
            color: var(--color-text-disabled);
            margin-top: 4px;
        }

        .faq-section {
            padding: 72px 0;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
        }

        .faq-wrap {
            max-width: 840px;
            margin: 36px auto 0;
        }

        .accordion {
            background: var(--color-bg);
            border-radius: 16px;
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .accordion-item {
            border-bottom: 1px solid var(--color-border);
            background: transparent;
        }

        .accordion-item:last-child {
            border-bottom: none;
        }

        .accordion-title {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text);
            position: relative;
            background: transparent;
            border: none;
            line-height: 1.4;
        }

        .accordion-title:hover {
            background: var(--color-surface-2);
            color: var(--color-text);
        }

        .accordion-title .faq-num {
            font-family: var(--font-display);
            color: var(--color-accent);
            font-weight: 800;
            font-size: 15px;
        }

        .accordion-title::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            margin-left: auto;
            color: var(--color-accent);
            transition: transform 0.2s ease;
            font-size: 14px;
        }

        .accordion-item.is-active .accordion-title::after {
            transform: rotate(45deg);
        }

        .accordion-content {
            padding: 0 24px 20px 60px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.7;
            background: transparent;
            border: none;
        }

        .accordion-content p {
            margin-bottom: 8px;
        }

        .cta-section {
            padding: 80px 0;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(109, 40, 217, 0.95) 0%, rgba(10, 12, 16, 0.9) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-radius: 32px;
            padding: 72px 48px;
            text-align: center;
            border: 1px solid rgba(139, 92, 246, 0.3);
            box-shadow: var(--shadow-card);
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 900;
            margin-bottom: 14px;
        }

        .cta-box p {
            color: var(--color-text-secondary);
            font-size: 18px;
            margin-bottom: 28px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .site-footer {
            background: #07080C;
            border-top: 1px solid var(--color-border);
            padding: 56px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 900;
            font-size: 20px;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .footer-brand__logo:hover {
            color: var(--color-text);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 260px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            font-size: 16px;
            transition: var(--transition);
            background: transparent;
        }

        .footer-social a:hover {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--color-text-secondary);
        }

        .footer-col ul a {
            color: var(--color-text-secondary);
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--color-border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--color-text-disabled);
        }

        @media (max-width: 1024px) {
            .audience-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .audience-card {
                padding: 20px 16px;
                flex-direction: column;
            }

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

            .guarantee-item {
                border-right: none;
                border-bottom: 1px solid var(--color-border);
            }

            .guarantee-item:nth-child(3),
            .guarantee-item:nth-child(4) {
                border-bottom: none;
            }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }

            .main-nav {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-actions .btn-sm {
                display: none;
            }

            .page-hero {
                min-height: auto;
                padding: 56px 0 40px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

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

            .hero-stats {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 12px;
                margin-top: 24px;
            }

            .stat-badge {
                flex: 1 1 calc(50% - 12px);
                padding: 14px 16px;
            }

            .stat-num {
                font-size: 26px;
            }

            .gallery-section {
                padding: 48px 0;
            }

            .section-header {
                margin-bottom: 28px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .gallery-side {
                gap: 16px;
            }

            .feature-card.is-small {
                min-height: 130px;
            }

            .feature-card.is-small .card-media {
                width: 100px;
            }

            .feature-card.is-small .card-body {
                padding: 14px;
            }

            .feature-card.is-small h3 {
                font-size: 15px;
            }

            .feature-card.is-small p {
                font-size: 12px;
            }

            .category-layout {
                padding: 48px 0 32px;
            }

            .audience-section {
                padding: 48px 0;
            }

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

            .guarantee-section {
                padding: 40px 0;
            }

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

            .guarantee-item {
                padding: 16px 14px;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .guarantee-item:nth-child(3) {
                border-bottom: 1px solid var(--color-border);
            }

            .faq-section {
                padding: 48px 0;
            }

            .accordion-title {
                padding: 16px;
                font-size: 15px;
            }

            .accordion-content {
                padding: 0 16px 16px 50px;
                font-size: 14px;
            }

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

            .cta-box {
                padding: 48px 24px;
                border-radius: 24px;
            }

            .cta-box h2 {
                font-size: 28px;
            }

            .cta-box p {
                font-size: 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

        @media (max-width: 520px) {
            .site-header {
                height: 60px;
            }

            .site-logo {
                font-size: 18px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 17px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .stat-badge {
                flex: 1 1 100%;
            }

            .gallery-grid-row .cell {
                margin-bottom: 16px;
            }

            .gallery-side .feature-card {
                flex-direction: column;
            }

            .feature-card.is-small .card-media {
                width: 100%;
                height: 120px;
            }

            .feature-card.is-small h3 {
                font-size: 16px;
            }

            .feature-card.is-small p {
                font-size: 13px;
            }

            .feature-card.is-large .card-body {
                padding: 16px;
            }

            .feature-card h3 {
                font-size: 18px;
            }

            .card-meta {
                flex-wrap: wrap;
            }

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