/* roulang page: index */
:root {
    --bg-primary: #0B1626;
    --bg-secondary: #132B47;
    --accent: #00A3FF;
    --accent-light: #7FD1FF;
    --text-primary: #CFE0F0;
    --text-secondary: #8FA9C4;
    --text-heading: #F2F7FC;
    --border: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.14);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 10px;
    --radius-pill: 999px;
    --shadow-card: 0 8px 24px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
    --glow-btn: 0 0 12px rgba(0,163,255,0.55), 0 0 32px rgba(0,163,255,0.25);
    --glow-btn-hover: 0 0 16px rgba(0,163,255,0.65), 0 0 42px rgba(0,163,255,0.35);
    --ease: cubic-bezier(.4,0,.2,1);
    --space: 8px;
}
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", "Manrope", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a {
    color: var(--accent);
    text-decoration: none;
    transition: color .25s var(--ease);
}
a:hover {
    color: var(--accent-light);
}
img {
    max-width: 100%;
    display: block;
    object-fit: cover;
}
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
}
input, textarea {
    font-family: inherit;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}
.section {
    padding: 96px 0;
    position: relative;
}
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}
.section-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    border: 1px solid rgba(0,163,255,.3);
    border-radius: var(--radius-pill);
    padding: 4px 16px;
    margin-bottom: 16px;
    background: rgba(0,163,255,.08);
}
.section-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: .5px;
    line-height: 1.3;
    margin-bottom: 12px;
}
.section-header p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 32px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .5px;
    transition: all .3s var(--ease);
    outline: none;
}
.btn:focus-visible {
    box-shadow: 0 0 0 2px var(--bg-primary), 0 0 0 4px var(--accent);
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #0080E8);
    color: #fff;
    box-shadow: var(--glow-btn);
}
.btn-primary:hover {
    box-shadow: var(--glow-btn-hover);
    transform: translateY(-2px);
    color: #fff;
    filter: brightness(1.08);
}
.btn-outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,.3);
    color: var(--text-heading);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(0,163,255,.15);
}

/* 导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s;
    border-bottom: 1px solid transparent;
}
.header.scrolled {
    background: rgba(11,22,38,.72);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border-bottom-color: rgba(255,255,255,.08);
}
.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-heading);
}
.logo-dot {
    font-size: 11px;
    font-weight: 500;
    color: var(--accent);
    border: 1px solid rgba(0,163,255,.4);
    border-radius: var(--radius-pill);
    padding: 2px 8px;
    letter-spacing: 1px;
    line-height: 1.4;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}
.nav-link {
    position: relative;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: .5px;
    padding: 8px 0;
    transition: color .25s var(--ease);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: width .3s var(--ease);
}
.nav-link:hover {
    color: var(--text-heading);
}
.nav-link:hover::after {
    width: 100%;
}
.nav-link.active {
    color: var(--accent);
    font-weight: 600;
}
.nav-link.active::after {
    width: 100%;
}
.nav-toggle {
    display: none;
    background: transparent;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255,255,255,.15);
    border-radius: 10px;
    color: var(--text-heading);
    font-size: 18px;
    align-items: center;
    justify-content: center;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    z-index: 0;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 35% 50%, rgba(11,22,38,.4), rgba(11,22,38,.88));
    z-index: 1;
}
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
    background-size: 48px 48px;
    z-index: 0;
}
.hero-content {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 64px;
    align-items: center;
    padding: 80px 0;
}
.hero-text {
    max-width: 640px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0,163,255,.1);
    border: 1px solid rgba(0,163,255,.3);
    color: var(--accent-light);
    font-size: 12px;
    letter-spacing: 1.5px;
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: 24px;
}
.hero-badge i {
    font-size: 12px;
}
.hero h1 {
    font-size: 46px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-heading);
    letter-spacing: 1px;
    margin-bottom: 20px;
}
.hero-sub {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(207,224,240,.85);
    margin-bottom: 36px;
    letter-spacing: .3px;
}
.hero-cta {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}
.hero-trust {
    margin-top: 56px;
    display: flex;
    gap: 32px;
    border-top: 1px solid var(--border);
    padding-top: 28px;
    flex-wrap: wrap;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}
.trust-item i {
    color: var(--accent);
    font-size: 15px;
}
.hero-visual {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.12);
    box-shadow: 0 20px 60px rgba(0,0,0,.4);
    aspect-ratio: 5/4;
    background: var(--bg-secondary);
}
.hero-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-visual::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,163,255,.15), transparent 40%);
    pointer-events: none;
}

/* 玻璃卡片 */
.glass-card {
    background: rgba(19,43,71,.55);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid rgba(255,255,255,.1);
    box-shadow: 0 8px 24px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.06);
    border-radius: var(--radius-lg);
    transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}

/* 核心服务网格 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.service-card {
    position: relative;
    padding: 0;
    overflow: hidden;
    background: rgba(19,43,71,.55);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid rgba(255,255,255,.1);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    border-radius: var(--radius-lg);
    transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(127,209,255,.4);
    box-shadow: 0 16px 40px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.08);
}
.service-card-media {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--bg-secondary);
}
.service-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s var(--ease);
}
.service-card:hover .service-card-media img {
    transform: scale(1.03);
}
.service-card-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    background: var(--accent);
    color: #fff;
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
    padding: 6px 12px;
    border-radius: 8px;
    letter-spacing: .5px;
}
.service-card-body {
    padding: 20px 20px 24px;
}
.service-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.service-card-body p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    transition: gap .25s var(--ease);
}
.card-link:hover {
    color: var(--accent-light);
    gap: 10px;
}
.service-card-fav {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 2;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(11,22,38,.6);
    border: 1px solid rgba(255,255,255,.15);
    color: var(--text-secondary);
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .25s var(--ease);
    cursor: pointer;
}
.service-card-fav:hover {
    background: rgba(0,163,255,.2);
    color: var(--accent);
    border-color: rgba(0,163,255,.4);
}
.service-card-fav.faved {
    color: var(--accent);
    background: rgba(0,163,255,.15);
}

/* 评价轮播 */
.testimonial-wrap {
    position: relative;
    overflow: hidden;
}
.testimonial-track {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 8px 4px 24px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}
.testimonial-track::-webkit-scrollbar {
    display: none;
}
.testimonial-card {
    flex: 0 0 calc(33.333% - 16px);
    min-width: 280px;
    padding: 32px;
    background: rgba(19,43,71,.55);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0,0,0,.2), inset 0 1px 0 rgba(255,255,255,.05);
    transition: border-color .3s var(--ease);
}
.testimonial-card:hover {
    border-color: rgba(127,209,255,.3);
}
.quote-mark {
    font-size: 48px;
    font-weight: 700;
    color: var(--accent);
    line-height: 0;
    display: block;
    margin-bottom: 16px;
    font-family: Georgia, serif;
}
.stars {
    color: var(--accent);
    font-size: 14px;
    letter-spacing: 3px;
    margin-bottom: 16px;
}
.quote-text {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 20px;
}
.quote-author {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}
.testimonial-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-top: 32px;
}
.ctrl-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid rgba(255,255,255,.2);
    color: var(--text-primary);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .25s var(--ease);
}
.ctrl-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.dots {
    display: flex;
    gap: 8px;
}
.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    transition: all .3s var(--ease);
}
.dot.active {
    background: var(--accent);
    width: 20px;
    border-radius: var(--radius-pill);
}

/* 保障条 */
.guarantee-section {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: rgba(19,43,71,.25);
}
.guarantee-grid {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.guarantee-item {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    min-width: 220px;
    position: relative;
}
.guarantee-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,.08);
}
.guarantee-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(19,43,71,.7);
    border: 1px solid rgba(255,255,255,.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 18px;
    flex-shrink: 0;
}
.guarantee-text {
    display: flex;
    flex-direction: column;
}
.guarantee-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-heading);
}
.guarantee-desc {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 资讯列表 */
.news-list {
    max-width: 960px;
    margin: 0 auto;
}
.news-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
    transition: background .2s var(--ease);
}
.news-item:first-child {
    border-top: 1px solid var(--border);
}
.news-item:hover {
    background: rgba(19,43,71,.3);
}
.news-date {
    flex-shrink: 0;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 100px;
}
.news-category {
    flex-shrink: 0;
    font-size: 11px;
    color: var(--accent-light);
    background: rgba(0,163,255,.1);
    border: 1px solid rgba(0,163,255,.25);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
}
.news-main {
    flex: 1;
    min-width: 0;
}
.news-title {
    display: block;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-summary {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-link {
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap .25s var(--ease);
}
.news-link:hover {
    gap: 8px;
    color: var(--accent-light);
}
.empty-state {
    text-align: center;
    padding: 64px 32px;
    border: 1px dashed rgba(255,255,255,.15);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
}
.empty-state i {
    font-size: 40px;
    color: rgba(255,255,255,.15);
    display: block;
    margin-bottom: 16px;
}
.empty-state p {
    font-size: 14px;
}

/* FAQ */
.faq-list {
    max-width: 760px;
    margin: 0 auto;
}
.faq-item {
    border-bottom: 1px solid var(--border);
}
.faq-item:first-of-type {
    border-top: 1px solid var(--border);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    background: transparent;
    padding: 20px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-heading);
    text-align: left;
    transition: color .25s var(--ease);
}
.faq-question:hover {
    color: var(--accent);
}
.faq-icon {
    font-size: 18px;
    font-weight: 300;
    color: var(--accent);
    transition: transform .3s var(--ease);
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}
.faq-item.open .faq-icon {
    transform: rotate(45deg);
}
.faq-answer {
    display: none;
    padding: 0 0 24px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-secondary);
}
.faq-item.open .faq-answer {
    display: block;
    animation: fadeIn .3s var(--ease);
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* CTA */
.cta-section {
    position: relative;
    padding: 120px 0;
    text-align: center;
}
.cta-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    z-index: 0;
}
.cta-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11,22,38,.82);
    z-index: 1;
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
}
.cta-inner h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 16px;
    line-height: 1.3;
}
.cta-inner p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

/* 页脚 */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.footer-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: 1px;
}
.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 300px;
}
.footer-social {
    display: flex;
    gap: 12px;
}
.social-btn {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,.12);
    background: rgba(255,255,255,.03);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: all .25s var(--ease);
}
.social-btn:hover {
    color: var(--accent);
    border-color: rgba(0,163,255,.4);
    background: rgba(0,163,255,.1);
}
.footer-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 20px;
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.footer-links a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color .2s var(--ease);
}
.footer-links a:hover {
    color: var(--accent);
}
.footer-contact p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-contact i {
    color: var(--accent);
    width: 16px;
    text-align: center;
}
.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-secondary);
}
.footer-bottom a {
    color: var(--text-secondary);
}
.footer-bottom a:hover {
    color: var(--accent);
}

/* 响应式 */
@media (max-width: 960px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero-visual {
        max-width: 560px;
    }
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonial-card {
        flex-basis: calc(50% - 12px);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .section {
        padding: 56px 0;
    }
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 16px;
        right: 16px;
        background: rgba(11,22,38,.92);
        backdrop-filter: blur(24px) saturate(160%);
        -webkit-backdrop-filter: blur(24px) saturate(160%);
        border: 1px solid rgba(255,255,255,.12);
        border-radius: var(--radius-lg);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 16px;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: all .3s var(--ease);
    }
    .nav-menu.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    .nav-link {
        padding: 14px 16px;
        border-radius: 8px;
    }
    .nav-link:hover {
        background: rgba(0,163,255,.08);
    }
    .nav-toggle {
        display: flex;
    }
    .hero h1 {
        font-size: 32px;
    }
    .hero-sub {
        font-size: 15px;
    }
    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }
    .btn {
        width: 100%;
    }
    .guarantee-grid {
        gap: 24px;
    }
    .guarantee-item:not(:last-child)::after {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .section {
        padding: 48px 0;
    }
    .service-grid {
        grid-template-columns: 1fr;
    }
    .testimonial-card {
        flex-basis: 100%;
        min-width: 0;
    }
    .hero-trust {
        gap: 16px;
        flex-direction: column;
    }
    .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .news-link {
        align-self: flex-end;
    }
    .cta-section {
        padding: 80px 0;
    }
    .cta-inner h2 {
        font-size: 24px;
    }
}
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}

/* roulang page: category1 */
:root {
            --bg-primary: #0B1626;
            --bg-panel: #132B47;
            --brand: #00A3FF;
            --brand-light: #7FD1FF;
            --text-primary: #CFE0F0;
            --text-secondary: #8FA9C4;
            --text-heading: #F2F7FC;
            --border: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.12);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --glow: 0 0 12px rgba(0, 163, 255, 0.55), 0 0 32px rgba(0, 163, 255, 0.25);
            --glow-hover: 0 0 16px rgba(0, 163, 255, 0.7), 0 0 40px rgba(0, 163, 255, 0.35);
            --font-sans: 'Inter', 'Manrope', 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--brand-light);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

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

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
            border-bottom: 1px solid transparent;
        }
        .header.scrolled {
            background: rgba(11, 22, 38, 0.75);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: .5px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .logo .logo-dot {
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 163, 255, 0.15);
            color: var(--brand-light);
            border: 1px solid rgba(0, 163, 255, 0.3);
            border-radius: var(--radius-pill);
            padding: 2px 10px;
            letter-spacing: 1px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            letter-spacing: .5px;
            color: var(--text-secondary);
            font-weight: 400;
            padding: 6px 2px;
            transition: color .2s ease;
        }
        .nav-link:hover {
            color: var(--text-heading);
        }
        .nav-link.active {
            color: var(--text-heading);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -4px;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
            box-shadow: 0 0 8px rgba(0, 163, 255, 0.6);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-heading);
            font-size: 22px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            color: var(--brand-light);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 32px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: .5px;
            cursor: pointer;
            transition: all .25s ease;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--brand);
            color: #052238;
            box-shadow: var(--glow);
        }
        .btn-primary:hover {
            background: #1eb2ff;
            color: #052238;
            box-shadow: var(--glow-hover);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-heading);
            border-color: rgba(255, 255, 255, 0.28);
        }
        .btn-outline:hover {
            border-color: var(--brand-light);
            color: var(--brand-light);
            background: rgba(0, 163, 255, 0.06);
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: 180px 0 80px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            text-align: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(11, 22, 38, 0.55) 0%, rgba(11, 22, 38, 0.88) 70%, rgba(11, 22, 38, 0.95) 100%);
        }
        .page-hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero-eyebrow {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 2px;
            color: var(--brand-light);
            background: rgba(0, 163, 255, 0.12);
            border: 1px solid rgba(0, 163, 255, 0.25);
            border-radius: var(--radius-pill);
            padding: 6px 20px;
            margin-bottom: 24px;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero-subtitle {
            font-size: 18px;
            color: rgba(207, 224, 240, 0.82);
            margin-bottom: 28px;
        }
        .hero-divider {
            width: 64px;
            height: 2px;
            background: linear-gradient(90deg, var(--brand), transparent);
            margin: 0 auto 28px;
            border-radius: 2px;
        }
        .hero-desc {
            max-width: 640px;
            margin: 0 auto;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 96px 0;
            position: relative;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 1px;
            color: var(--brand-light);
            background: rgba(0, 163, 255, 0.1);
            border: 1px solid rgba(0, 163, 255, 0.18);
            border-radius: var(--radius-pill);
            padding: 4px 16px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 48px;
        }

        /* ===== 核心信息区 ===== */
        .info-section {
            background:
                linear-gradient(rgba(19, 43, 71, 0.25) 1px, transparent 1px),
                linear-gradient(90deg, rgba(19, 43, 71, 0.25) 1px, transparent 1px);
            background-size: 32px 32px;
            border-bottom: 1px solid var(--border);
        }
        .info-grid {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 64px;
            align-items: center;
        }
        .info-list {
            list-style: none;
            margin-top: 32px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .info-list li {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding: 24px;
            background: rgba(19, 43, 71, 0.55);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            transition: border-color .3s ease, transform .3s ease;
        }
        .info-list li:hover {
            border-color: rgba(127, 209, 255, 0.35);
            transform: translateY(-2px);
        }
        .info-list li .icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(0, 163, 255, 0.12);
            border: 1px solid rgba(0, 163, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-light);
            font-size: 18px;
        }
        .info-list li h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .info-list li p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .info-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
        }
        .info-visual img {
            width: 100%;
            height: 100%;
            min-height: 360px;
            object-fit: cover;
        }
        .info-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }

        /* ===== 认证流程 ===== */
        .flow-section {
            background: var(--bg-primary);
        }
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: flow;
        }
        .flow-card {
            position: relative;
            padding: 36px 24px 28px;
            background: rgba(19, 43, 71, 0.45);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            transition: transform .3s ease, border-color .3s ease;
        }
        .flow-card:hover {
            transform: translateY(-4px);
            border-color: rgba(127, 209, 255, 0.35);
        }
        .flow-card .step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0, 163, 255, 0.15);
            border: 1px solid rgba(0, 163, 255, 0.35);
            color: var(--brand-light);
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .flow-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }
        .flow-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .flow-card::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -18px;
            width: 12px;
            height: 12px;
            border-top: 1px solid rgba(127, 209, 255, 0.4);
            border-right: 1px solid rgba(127, 209, 255, 0.4);
            transform: rotate(45deg) translateY(-50%);
            margin-top: -6px;
        }
        .flow-card:last-child::after {
            display: none;
        }

        /* ===== 内容卡片区 ===== */
        .card-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(19, 43, 71, 0.3) 50%, var(--bg-primary) 100%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-item {
            display: flex;
            flex-direction: column;
            background: rgba(19, 43, 71, 0.55);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            transition: transform .3s ease, border-color .3s ease;
        }
        .card-item:hover {
            transform: translateY(-4px);
            border-color: rgba(127, 209, 255, 0.4);
        }
        .card-img {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .card-item:hover .card-img img {
            transform: scale(1.03);
        }
        .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 22, 38, 0.4) 100%);
        }
        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(0, 163, 255, 0.9);
            color: #052238;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-sm);
            letter-spacing: .5px;
        }
        .card-body {
            padding: 24px 24px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            flex: 1;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--brand-light);
            transition: gap .3s ease;
        }
        .card-link:hover {
            color: var(--brand);
            gap: 10px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-primary);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 28px 8px;
            background: none;
            border: none;
            text-align: left;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-heading);
            cursor: pointer;
            font-family: var(--font-sans);
            transition: color .2s ease;
        }
        .faq-question:hover {
            color: var(--brand-light);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: transform .25s ease, background .25s ease, color .25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(0, 163, 255, 0.15);
            border-color: var(--brand);
            color: var(--brand-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 8px 28px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 22, 38, 0.92) 0%, rgba(19, 43, 71, 0.78) 50%, rgba(11, 22, 38, 0.94) 100%);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .cta-inner p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border);
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 16px 0 24px;
            max-width: 360px;
            line-height: 1.7;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .social-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 14px;
            transition: all .25s ease;
        }
        .social-btn:hover {
            border-color: var(--brand);
            color: var(--brand-light);
            background: rgba(0, 163, 255, 0.08);
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 20px;
            letter-spacing: .5px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-links a:hover {
            color: var(--brand-light);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--brand-light);
            font-size: 13px;
            width: 18px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom span:last-child {
            opacity: .75;
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .page-hero-inner {
            animation: fadeInUp .6s ease both;
        }
        .section-title {
            animation: fadeInUp .5s ease both;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                row-gap: 32px;
            }
            .flow-card::after {
                display: none;
            }
            .info-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: 56px 0;
            }
            .nav-wrap {
                height: 64px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 64px;
                left: 12px;
                right: 12px;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                background: rgba(11, 22, 38, 0.92);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border: 1px solid var(--border);
                border-radius: var(--radius-lg);
                padding: 12px;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-8px);
                transition: all .3s ease;
                z-index: 999;
            }
            .nav-menu.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-link {
                padding: 14px 16px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }
            .nav-link.active {
                background: rgba(0, 163, 255, 0.1);
            }
            .nav-link.active::after {
                display: none;
            }
            .page-hero {
                padding: 130px 0 56px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .info-list li {
                flex-direction: column;
                gap: 12px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .flow-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section {
                padding: 64px 0;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .btn {
                width: 100%;
                padding: 0 20px;
            }
            .btn-primary,
            .btn-outline {
                margin-bottom: 8px;
            }
            .card-item {
                margin-bottom: 8px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B1626;
            --bg-secondary: #132B47;
            --brand-blue: #00A3FF;
            --ice-blue: #7FD1FF;
            --text-primary: #CFE0F0;
            --text-secondary: #8FA9C4;
            --text-heading: #F2F7FC;
            --border: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.10);
            --glass-bg: rgba(19, 43, 71, 0.55);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            --shadow-glow: 0 0 12px rgba(0, 163, 255, 0.55), 0 0 32px rgba(0, 163, 255, 0.25);
            --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--brand-blue);
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: var(--ice-blue);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            border: none;
            background: none;
            cursor: pointer;
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            padding: 12px 32px;
            min-height: 44px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--brand-blue);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            color: #fff;
            background: #19adff;
            box-shadow: 0 0 16px rgba(0, 163, 255, 0.75), 0 0 40px rgba(0, 163, 255, 0.3);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.35);
            color: var(--text-heading);
        }
        .btn-outline:hover {
            border-color: var(--brand-blue);
            color: var(--brand-blue);
            background: rgba(0, 163, 255, 0.06);
        }
        .btn:focus-visible {
            outline: 2px solid var(--brand-blue);
            outline-offset: 2px;
        }

        /* Header & Nav */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: background 0.35s, box-shadow 0.35s, border-color 0.35s;
            border-bottom: 1px solid transparent;
        }
        .header.scrolled {
            background: rgba(11, 22, 38, 0.72);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: baseline;
            gap: 2px;
        }
        .logo-dot {
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-blue);
            background: rgba(0, 163, 255, 0.12);
            border: 1px solid rgba(0, 163, 255, 0.3);
            padding: 2px 8px;
            border-radius: 999px;
            margin-left: 4px;
            letter-spacing: 1px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-link {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            padding: 10px 16px;
            border-radius: 8px;
            letter-spacing: 0.5px;
            position: relative;
            transition: color 0.25s, background 0.25s;
        }
        .nav-link:hover {
            color: var(--text-heading);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-link.active {
            color: var(--brand-blue);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 6px;
            height: 3px;
            border-radius: 2px;
            background: var(--brand-blue);
            box-shadow: 0 0 8px rgba(0, 163, 255, 0.6);
        }
        .nav-toggle {
            display: none;
            font-size: 20px;
            color: var(--text-heading);
            padding: 8px;
            border-radius: 8px;
            transition: background 0.25s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* Article Main */
        .article-main {
            padding: 96px 0 0;
            position: relative;
        }
        .article-header-wrap {
            position: relative;
            padding: 120px 0 48px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border);
        }
        .article-header-wrap::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 40%, rgba(11, 22, 38, 0.35), rgba(11, 22, 38, 0.9) 75%);
            z-index: 1;
        }
        .article-header-wrap .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--brand-blue);
        }
        .breadcrumb .sep {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.3);
        }
        .breadcrumb .crumb-current {
            color: var(--ice-blue);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-title {
            font-size: 40px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
            text-align: center;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
        }
        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-item i {
            font-size: 13px;
            color: var(--brand-blue);
        }
        .article-body {
            max-width: 860px;
            margin: 0 auto;
            padding: 48px 24px 64px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
        }
        .article-content p {
            margin: 0 0 24px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 48px 0 16px;
            padding-left: 14px;
            border-left: 3px solid var(--brand-blue);
            line-height: 1.3;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            margin: 32px 0 12px;
            line-height: 1.3;
        }
        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin: 24px 0 10px;
        }
        .article-content blockquote {
            border-left: 3px solid var(--brand-blue);
            background: rgba(0, 163, 255, 0.06);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            color: var(--ice-blue);
            font-size: 15px;
        }
        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-content ul,
        .article-content ol {
            padding-left: 28px;
            margin: 16px 0 24px;
        }
        .article-content ul li {
            list-style: disc;
            margin-bottom: 8px;
            line-height: 1.7;
            padding-left: 4px;
        }
        .article-content ol li {
            list-style: decimal;
            margin-bottom: 8px;
            line-height: 1.7;
            padding-left: 4px;
        }
        .article-content img {
            display: block;
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 32px 0;
            object-fit: cover;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .article-content a {
            color: var(--brand-blue);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .article-content a:hover {
            color: var(--ice-blue);
        }
        .article-content strong {
            color: var(--text-heading);
            font-weight: 600;
        }
        .article-content hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 40px 0;
        }
        .article-content figure {
            margin: 32px 0;
        }
        .article-content figure img {
            margin: 0 0 8px;
        }
        .article-content figcaption {
            text-align: center;
            font-size: 14px;
            color: var(--text-secondary);
            padding-bottom: 8px;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 15px;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: rgba(0, 163, 255, 0.08);
            color: var(--text-heading);
            font-weight: 600;
        }
        .article-content code {
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            font-family: "SFMono-Regular", Consolas, monospace;
        }

        /* Not Found */
        .not-found {
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
            padding: 120px 24px;
        }
        .not-found-icon {
            font-size: 64px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            display: block;
            opacity: 0.5;
        }
        .not-found-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .not-found-text {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 32px;
        }

        /* Related Section */
        .related-section {
            background: rgba(19, 43, 71, 0.2);
            padding: 64px 0 96px;
            border-top: 1px solid var(--border);
        }
        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }
        .related-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.5px;
            position: relative;
        }
        .related-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 32px;
            height: 3px;
            border-radius: 2px;
            background: var(--brand-blue);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: rgba(19, 43, 71, 0.55);
            backdrop-filter: blur(20px) saturate(140%);
            -webkit-backdrop-filter: blur(20px) saturate(140%);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(127, 209, 255, 0.4);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
        }
        .related-card-img {
            position: relative;
            width: 100%;
            height: 180px;
            overflow: hidden;
            background: rgba(255, 255, 255, 0.04);
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.03);
        }
        .related-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 22, 38, 0.5), transparent 40%);
        }
        .related-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--brand-blue);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            box-shadow: 0 2px 8px rgba(0, 163, 255, 0.3);
        }
        .related-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .related-card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .related-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-blue);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s;
        }
        .related-card-link:hover {
            gap: 10px;
            color: var(--ice-blue);
        }

        /* Footer */
        .footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 20px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .social-btn {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            font-size: 15px;
            transition: all 0.25s;
        }
        .social-btn:hover {
            color: var(--brand-blue);
            border-color: rgba(0, 163, 255, 0.4);
            background: rgba(0, 163, 255, 0.08);
            transform: translateY(-2px);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.2s, padding-left 0.2s;
        }
        .footer-links a:hover {
            color: var(--brand-blue);
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--brand-blue);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-secondary);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--brand-blue);
            outline-offset: 2px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .related-card-img {
                height: 160px;
            }
        }
        @media (max-width: 959px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .article-title {
                font-size: 34px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 22, 38, 0.9);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                gap: 4px;
                display: none;
                z-index: 999;
                box-shadow: 0 24px 40px rgba(0, 0, 0, 0.4);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                padding: 14px 16px;
                border-radius: 10px;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(0, 163, 255, 0.08);
            }
            .article-header-wrap {
                padding: 96px 0 40px;
            }
            .article-title {
                font-size: 28px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
            }
            .article-body {
                padding: 32px 20px 48px;
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .related-section {
                padding: 40px 0 56px;
            }
            .related-title {
                font-size: 22px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card-img {
                height: 200px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 20px;
            }
            .not-found {
                padding: 80px 20px;
            }
            .not-found-title {
                font-size: 24px;
            }
            .breadcrumb {
                font-size: 13px;
            }
            .btn {
                padding: 12px 24px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 16px;
            }
            .article-header-wrap {
                padding: 84px 0 36px;
            }
            .article-title {
                font-size: 24px;
                line-height: 1.3;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
            .breadcrumb .crumb-current {
                max-width: 200px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-card-img {
                height: 180px;
            }
            .footer-bottom {
                font-size: 12px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
            }
        }
        @supports not (backdrop-filter: blur(20px)) {
            .related-card {
                background: rgba(19, 43, 71, 0.85);
            }
            .nav-menu {
                background: rgba(11, 22, 38, 0.97);
            }
        }

/* roulang page: category3 */
:root {
  --bg-dark: #0B1626;
  --bg-panel: #132B47;
  --brand-blue: #00A3FF;
  --ice-blue: #7FD1FF;
  --text-primary: #CFE0F0;
  --text-secondary: #8FA9C4;
  --text-heading: #F2F7FC;
  --border-line: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-highlight: rgba(127, 209, 255, 0.4);
  --glass-bg: rgba(19, 43, 71, 0.55);
  --glass-blur: blur(20px) saturate(140%);
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --glow-btn: 0 0 12px rgba(0, 163, 255, 0.55), 0 0 32px rgba(0, 163, 255, 0.25);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Inter", "Manrope", sans-serif;
  --space-section: 96px;
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 20%, rgba(0, 163, 255, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(19, 43, 71, 0.4) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--brand-blue);
  text-decoration: none;
  transition: color 0.25s ease;
  outline: none;
}

a:hover {
  color: var(--ice-blue);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--brand-blue);
  outline-offset: 2px;
}

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

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.header.scrolled {
  background: rgba(11, 22, 38, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-line);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  padding: 0 24px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1;
}

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

.logo-dot {
  font-size: 12px;
  font-weight: 500;
  background: rgba(0, 163, 255, 0.15);
  border: 1px solid rgba(0, 163, 255, 0.3);
  color: var(--ice-blue);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 14px;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
  font-weight: 400;
  transition: color 0.25s ease;
}

.nav-link:hover {
  color: var(--text-heading);
}

.nav-link.active {
  color: var(--text-heading);
  font-weight: 500;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 3px;
  border-radius: 2px;
  background: var(--brand-blue);
  box-shadow: 0 0 8px rgba(0, 163, 255, 0.5);
}

.nav-toggle {
  display: none;
  color: var(--text-heading);
  font-size: 22px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  transition: border-color 0.3s ease;
}

.nav-toggle:hover {
  border-color: var(--brand-blue);
}

/* Hero */
.page-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  position: relative;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 30%, rgba(0, 163, 255, 0.16) 0%, transparent 40%),
              linear-gradient(110deg, rgba(11, 22, 38, 0.96) 20%, rgba(11, 22, 38, 0.75) 60%, rgba(11, 22, 38, 0.5) 100%);
  z-index: 1;
}

.page-hero .container {
  z-index: 2;
}

.page-hero .hero-label {
  display: inline-block;
  font-size: 13px;
  color: var(--ice-blue);
  background: rgba(0, 163, 255, 0.08);
  border: 1px solid rgba(0, 163, 255, 0.25);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.page-hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.3;
  margin-bottom: 20px;
  max-width: 640px;
}

.page-hero .hero-sub {
  font-size: 16px;
  color: rgba(207, 224, 240, 0.82);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 22px;
  align-items: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 32px;
  background: linear-gradient(135deg, #00A3FF, #0084D6);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  box-shadow: var(--glow-btn);
  transition: all 0.3s ease;
  text-decoration: none;
  gap: 8px;
  border: 1px solid rgba(0, 163, 255, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 0 18px rgba(0, 163, 255, 0.8), 0 0 40px rgba(0, 163, 255, 0.35);
  transform: translateY(-2px);
  color: #fff;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 32px;
  background: transparent;
  color: var(--text-heading);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.35);
  transition: all 0.3s ease;
  text-decoration: none;
  gap: 8px;
}

.btn-outline:hover {
  border-color: var(--ice-blue);
  color: var(--ice-blue);
  background: rgba(0, 163, 255, 0.08);
}


.hero-divider {
  height: 1px;
  background: var(--border-line);
  margin-top: 48px;
  position: relative;
}

.hero-trust {
  display: flex;
  gap: 36px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.trust-item i {
  color: var(--brand-blue);
  font-size: 14px;
}

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

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

.section-tag {
  font-size: 12px;
  color: var(--brand-blue);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 12px;
  font-weight: 600;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.4;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Support Service Cards */
.support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.support-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}

.support-card:hover {
  transform: translateY(-6px);
  border-color: rgba(127, 209, 255, 0.4);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.support-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(0, 163, 255, 0.1);
  border: 1px solid rgba(0, 163, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--brand-blue);
  margin-bottom: 20px;
}

.support-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 12px;
  line-height: 1.5;
}

.support-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Process */
.process-section {
  background: linear-gradient(180deg, transparent 0%, rgba(19, 43, 71, 0.25) 50%, transparent 100%);
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.process-step {
  text-align: center;
  padding: 40px 24px;
  position: relative;
}

.step-num {
  counter-increment: step;
  font-size: 42px;
  font-weight: 700;
  color: rgba(0, 163, 255, 0.35);
  line-height: 1.8;
  font-family: "Inter", "Manrope", sans-serif;
  margin-bottom: 12px;
}

.step-num::before {
  content: counter(step);
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-blue);
  position: absolute;
  top: 22px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(0, 163, 255, 0.1);
  border: 1px solid rgba(0, 163, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  z-index: 2;
}

.step-num .fa-circle {
  color: rgba(0, 163, 255, 0.1);
  font-size: 30px;
}

.process-step h3 {
  font-size: 17px;
  color: var(--text-heading);
  font-weight: 600;
  margin-bottom: 10px;
  margin-top: 20px;
  position: relative;
}

.process-step p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 240px;
  margin: 0 auto;
}

/* cover content */
.showcase-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: center;
}

.showcase-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card);
  aspect-ratio: 4 / 3;
  background: var(--bg-panel);
}

.showcase-image img {
  width: 100%;
  height: 100%;
}

.showcase-content h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 20px;
  line-height: 1.4;
}

.showcase-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 18px;
}

.showcase-list {
  list-style: none;
  margin-top: 24px;
  border-top: 1px solid var(--border-line);
}

.showcase-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-line);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--text-primary);
}

.showcase-list li i {
  color: var(--brand-blue);
  font-size: 15px;
  width: 20px;
  text-align: center;
}

/* Guide cards */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.guide-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.guide-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.guide-card-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-panel);
  position: relative;
}

.guide-card-cover img {
  width: 100%;
  height: 100%;
  transition: transform 0.4s ease;
}

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

.guide-card-cover .badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(0, 163, 255, 0.2);
  backdrop-filter: blur(8px);
  color: var(--ice-blue);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(0, 163, 255, 0.3);
  letter-spacing: 0.5px;
}

.guide-card-content {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.guide-card-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 12px;
  line-height: 1.5;
}

.guide-card-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}

.card-link {
  font-size: 13px;
  color: var(--brand-blue);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.25s ease;
}

.card-link i {
  font-size: 12px;
  transition: transform 0.25s ease;
}

.card-link:hover {
  color: var(--ice-blue);
}

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

/* Stats */
.stats-section {
  border-top: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  background: rgba(19, 43, 71, 0.15);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 40px 20px;
  border-right: 1px solid var(--border-line);
}

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

.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 8px;
  font-family: "Inter", "Manrope", sans-serif;
}

.stat-number span {
  color: var(--brand-blue);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
}

/* FAQ */
.faq-section {
  border-top: 1px solid var(--border-line);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-line);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-heading);
  cursor: pointer;
  background: none;
  width: 100%;
  text-align: left;
  transition: color 0.3s ease;
}

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

.faq-question.active {
  color: var(--brand-blue);
}

.faq-icon {
  font-size: 20px;
  color: var(--brand-blue);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-question.active .faq-icon {
  transform: rotate(45deg);
}

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

.faq-answer-inner {
  padding: 0 0 24px;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.9;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  border-top: 1px solid var(--border-line);
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(11, 22, 38, 0.97) 30%, rgba(11, 22, 38, 0.88) 70%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cta-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
  line-height: 1.4;
}

.cta-desc {
  font-size: 15px;
  color: rgba(207, 224, 240, 0.7);
  line-height: 1.8;
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border-line);
  padding: 96px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 64px;
  margin-bottom: 64px;
}

.footer-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
  display: block;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  max-width: 320px;
}

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

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 15px;
  transition: all 0.3s ease;
}

.social-btn:hover {
  background: rgba(0, 163, 255, 0.15);
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.25s ease;
}

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

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact p i {
  color: var(--brand-blue);
  width: 16px;
  text-align: center;
}

.footer-bottom {
  border-top: 1px solid var(--border-line);
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-bottom span:last-child {
  color: rgba(143, 169, 196, 0.7);
}

/* ========== Responsive ========== */
@media (max-width: 1023px) {
  .support-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

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

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

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .stat-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--border-line);
  }

  .showcase-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 767px) {
  :root {
    --space-section: 56px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 24px;
    right: 24px;
    background: rgba(19, 43, 71, 0.92);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px;
    box-shadow: var(--shadow-card);
  }

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

  .nav-menu .nav-link {
    display: block;
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
  }

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

  .nav-menu .nav-link.active {
    background: rgba(0, 163, 255, 0.1);
    color: var(--brand-blue);
  }

  .nav-toggle {
    display: flex;
  }

  .page-hero {
    min-height: auto;
    padding: 120px 0 60px;
  }

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

  .page-hero .hero-sub {
    font-size: 15px;
  }

  .hero-actions {
    gap: 16px;
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-outline {
    width: 100%;
  }

  .hero-trust {
    gap: 18px;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .section-title {
    font-size: 22px;
  }

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

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

  .process-step {
    padding: 24px 16px;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .stat-item {
    padding: 24px 12px;
  }

  .stat-number {
    font-size: 28px;
  }

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

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

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

  .cta-actions {
    flex-direction: column;
    width: 100%;
  }

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

@media (max-width: 479px) {
  .container {
    padding: 0 16px;
  }

  .nav-wrap {
    padding: 0 16px;
  }

  .logo {
    font-size: 20px;
  }

  .page-hero {
    padding-top: 108px;
  }

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

  .hero-actions {
    gap: 12px;
  }

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

  .support-card {
    padding: 24px 20px;
  }

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

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

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

/* Backdrop filter fallback */
@supports not ((backdrop-filter: blur(20px)) or (-webkit-backdrop-filter: blur(20px))) {
  .support-card,
  .guide-card,
  .nav-menu {
    background: rgba(19, 43, 71, 0.92);
  }
}

/* JSON-LD hidden */
.json-ld-hide {
  display: none;
}

/* roulang page: category2 */
:root {
  --bg: #0B1626;
  --bg-2: #132B47;
  --brand: #00A3FF;
  --ice: #7FD1FF;
  --text: #CFE0F0;
  --text-2: #8FA9C4;
  --title: #F2F7FC;
  --line: rgba(255,255,255,0.08);
  --card-bg: rgba(19,43,71,0.55);
  --glass-border: rgba(255,255,255,0.10);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
  --shadow-brand: 0 0 12px rgba(0,163,255,0.55), 0 0 32px rgba(0,163,255,0.25);
  --font: "Inter","Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

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

ul,
ol {
  list-style: none;
}

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

/* ===== Header & Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background: rgba(11,22,38,0.72);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: baseline;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--title);
  line-height: 1.2;
}

.logo-dot {
  font-size: 13px;
  font-weight: 500;
  color: var(--ice);
  margin-left: 6px;
  letter-spacing: 1px;
  background: rgba(0,163,255,0.14);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid rgba(127,209,255,0.30);
  transform: translateY(-2px);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  position: relative;
  font-size: 14px;
  letter-spacing: 0.5px;
  color: var(--text);
  padding: 6px 0;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--title);
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 3px;
  border-radius: 4px;
  background: var(--brand);
  box-shadow: 0 0 12px rgba(0,163,255,0.8);
}

.nav-toggle {
  display: none;
  font-size: 24px;
  color: var(--title);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 60px;
  background:
    linear-gradient(90deg, rgba(11,22,38,0.97) 38%, rgba(11,22,38,0.72) 70%, rgba(11,22,38,0.42)),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 78% 42%, rgba(0,163,255,0.14), transparent 46%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,163,255,0.12);
  border: 1px solid rgba(127,209,255,0.25);
  color: var(--ice);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
  letter-spacing: 1px;
}

.hero-eyebrow i {
  font-size: 12px;
}

.hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--title);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-subtitle {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(207,224,240,0.82);
  max-width: 520px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 32px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 16px rgba(0,163,255,0.75), 0 0 40px rgba(0,163,255,0.30);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.35);
  color: var(--title);
}

.btn-outline:hover {
  border-color: var(--ice);
  color: var(--ice);
  background: rgba(127,209,255,0.06);
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-2);
  box-shadow: var(--shadow-card);
}

.hero-visual img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,22,38,0.72), transparent 60%);
}

.hero-trust {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 36px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
}

.trust-item i {
  color: var(--ice);
  font-size: 16px;
}

/* ===== Section ===== */
.section {
  padding: 96px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-head h2 {
  font-size: 28px;
  font-weight: 700;
  color: var(--title);
  line-height: 1.4;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-2);
  font-size: 15px;
  max-width: 620px;
  margin: 0 auto;
}

/* ===== Hot Grid ===== */
.hot-section {
  background: linear-gradient(to bottom, var(--bg), rgba(19,43,71,0.35), var(--bg));
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.card {
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(127,209,255,0.4);
}

.card-img {
  position: relative;
  height: 180px;
  overflow: hidden;
  background: var(--bg-2);
}

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

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

.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  background: rgba(0,163,255,0.92);
  color: #fff;
  font-size: 11px;
  padding: 4px 12px;
  border-radius: 6px;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.card-fav {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 3;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(11,22,38,0.55);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-2);
  transition: all 0.2s ease;
}

.card-fav:hover,
.card-fav.active {
  color: var(--ice);
  border-color: var(--ice);
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--title);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 8px;
  line-height: 1.5;
}

.card-body p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  min-height: 48px;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-2);
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.card-meta .tag {
  font-size: 11px;
  padding: 3px 12px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(127,209,255,0.3);
  color: var(--ice);
  white-space: nowrap;
}

.card-link {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand);
  margin-top: 12px;
}

.card-link i {
  transition: transform 0.2s ease;
}

.card-link:hover i {
  transform: translateX(3px);
}

/* ===== Testimonials ===== */
.testimonials-section {
  background: rgba(19,43,71,0.28);
}

.testimonials-slider {
  position: relative;
  margin: 0 -12px;
}

.testimonials-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 12px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.testimonials-track::-webkit-scrollbar {
  display: none;
}

.testimonial-card {
  flex: 0 0 calc((100% - 48px) / 3);
  scroll-snap-align: start;
  background: rgba(11,22,38,0.6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.3s ease;
}

.testimonial-card:hover {
  border-color: rgba(127,209,255,0.3);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  color: var(--brand);
  font-size: 14px;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(0,163,255,0.18);
  border: 1px solid rgba(127,209,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ice);
  font-weight: 600;
}

.testimonial-author span {
  font-size: 14px;
  color: var(--title);
  font-weight: 500;
}

.testimonial-author small {
  font-size: 12px;
  color: var(--text-2);
  display: block;
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}

.slider-arrow {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: all 0.25s ease;
}

.slider-arrow:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.slider-dots {
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.2);
  transition: all 0.25s ease;
  cursor: pointer;
}

.slider-dot.active {
  width: 28px;
  background: var(--brand);
  box-shadow: 0 0 8px rgba(0,163,255,0.5);
}

/* ===== Assurance ===== */
.assurance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding: 24px 0;
  border: 1px solid var(--line);
  border-left: none;
  border-right: none;
}

.assurance-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.assurance-icon {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(19,43,71,0.6);
  border: 1px solid rgba(255,255,255,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ice);
  font-size: 18px;
}

.assurance-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--title);
  margin-bottom: 4px;
}

.assurance-item p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
}

/* ===== News / Latest ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--card-bg);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-4px);
  border-color: rgba(127,209,255,0.35);
}

.news-img {
  height: 150px;
  overflow: hidden;
  background: var(--bg-2);
}

.news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-tag {
  display: inline-flex;
  align-self: flex-start;
  font-size: 11px;
  padding: 3px 12px;
  border-radius: 999px;
  border: 1px solid rgba(127,209,255,0.3);
  color: var(--ice);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--title);
  line-height: 1.6;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 8px;
}

.news-body p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-2);
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.news-link {
  color: var(--brand);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.news-link i {
  transition: transform 0.2s ease;
}

.news-link:hover i {
  transform: translateX(3px);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-2);
  border: 1px dashed rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
}

.empty-state i {
  font-size: 44px;
  color: rgba(143,169,196,0.5);
  display: block;
  margin-bottom: 16px;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item:first-child {
  border-top: 1px solid var(--line);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--title);
  text-align: left;
  transition: color 0.2s ease;
  gap: 16px;
}

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

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--ice);
  transition: all 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  border-color: var(--brand);
  color: var(--brand);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 8px 24px;
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(11,22,38,0.94), rgba(11,22,38,0.78)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  padding: 96px 24px;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--title);
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-section p {
  font-size: 15px;
  color: rgba(207,224,240,0.82);
  max-width: 560px;
  margin: 0 auto 36px;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--line);
  padding: 64px 0 28px;
  margin-top: 96px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.footer-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--title);
  letter-spacing: 0.5px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.8;
  margin: 16px 0 20px;
  max-width: 360px;
}

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

.social-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-2);
  font-size: 15px;
  transition: all 0.25s ease;
}

.social-btn:hover {
  color: var(--ice);
  border-color: rgba(127,209,255,0.4);
  background: rgba(0,163,255,0.08);
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--title);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-2);
  transition: color 0.2s ease;
}

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

.footer-contact p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact i {
  color: var(--ice);
  font-size: 14px;
  width: 16px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  font-size: 13px;
  color: rgba(143,169,196,0.8);
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 959px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .testimonial-card {
    flex: 0 0 calc((100% - 24px) / 2);
  }

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

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

@media (max-width: 767px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: 72px;
    left: 24px;
    right: 24px;
    flex-direction: column;
    align-items: stretch;
    background: rgba(11,22,38,0.82);
    -webkit-backdrop-filter: blur(24px) saturate(140%);
    backdrop-filter: blur(24px) saturate(140%);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: 16px;
    padding: 16px 24px;
    gap: 4px;
    display: none;
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  }

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

  .nav-link {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }

  .nav-link.active::after {
    bottom: 0;
    height: 2px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero {
    padding-top: 120px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-visual img {
    height: 260px;
  }

  .section {
    padding: 56px 0;
  }

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

  .section-head h2 {
    font-size: 22px;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .testimonial-card {
    flex: 0 0 calc(100% - 24px);
  }

  .cta-section {
    padding: 64px 20px;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

  .assurance-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }

  .assurance-grid {
    border: none;
    padding: 0;
  }
}

@media (max-width: 479px) {
  .nav-menu {
    left: 16px;
    right: 16px;
  }

  .logo {
    font-size: 22px;
  }

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

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

  .btn {
    padding: 0 20px;
  }

  .section {
    padding: 48px 0;
  }
}

@supports not ((backdrop-filter: blur(20px)) or (-webkit-backdrop-filter: blur(20px))) {
  .card,
  .news-card,
  .nav-menu,
  .header.scrolled {
    background: rgba(11,22,38,0.92);
  }
}