/* roulang page: index */
:root {
        --color-primary: #171310;
        --color-accent: #C89B4A;
        --color-light: #F2EDE6;
        --color-text-on-dark: #F5F0E8;
        --color-text-secondary-dark: #A89A8A;
        --color-text-muted-dark: #6B5F52;
        --color-text-on-light: #171310;
        --color-text-secondary-light: #4A3E33;
        --color-border-dark: #3A2F28;
        --color-border-light: #D8CCC0;
        --color-card-dark: #221B16;
        --color-card-light: #F2EDE6;
        --color-accent-hover: #E0AF5E;
        --color-accent-active: #A87F38;
        --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
        --font-mono: 'SF Mono', 'Consolas', monospace;
        --radius-card: 10px;
        --radius-button: 8px;
        --shadow-dark: 0 4px 14px rgba(0,0,0,0.35);
        --shadow-light: 0 2px 10px rgba(23,19,16,0.08);
        --transition: 300ms ease;
        --section-padding: 72px;
        --container-max: 1200px;
    }

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

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        margin: 0;
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--color-text-on-light);
        background: #faf8f5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

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

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

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

    a:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 2px;
    }

    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 2px;
    }

    h1, h2, h3, h4, h5, h6 {
        margin: 0 0 0.5em;
        font-weight: 700;
        line-height: 1.3;
        color: inherit;
    }

    p {
        margin: 0 0 1.25em;
    }

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

    .section {
        padding-top: var(--section-padding);
        padding-bottom: var(--section-padding);
        position: relative;
    }

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

    .section-dark {
        background: var(--color-primary);
        color: var(--color-text-on-dark);
    }

    .section-divider-top {
        border-top: 1px solid var(--color-border-light);
    }

    .section-divider-bottom {
        border-bottom: 1px solid var(--color-border-light);
    }

    .section-label {
        display: inline-block;
        font-family: var(--font-mono);
        font-size: 0.8rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--color-accent);
        margin-bottom: 12px;
        font-weight: 500;
    }

    .section-title {
        font-size: 2.2rem;
        font-weight: 700;
        line-height: 1.25;
        margin-bottom: 16px;
        color: inherit;
    }

    .section-subtitle {
        font-size: 1.06rem;
        line-height: 1.85;
        max-width: 780px;
        color: var(--color-text-secondary-light);
        margin-bottom: 36px;
    }

    .section-dark .section-title {
        color: var(--color-text-on-dark);
    }

    .section-dark .section-subtitle {
        color: var(--color-text-secondary-dark);
    }

    /* ===== Header / Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: var(--color-primary);
        transition: all var(--transition);
        box-shadow: 0 2px 12px rgba(0,0,0,0.25);
    }

    .header-brand-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        border-bottom: 1px solid rgba(58,47,40,0.5);
        transition: all var(--transition);
    }

    .header-logo {
        display: flex;
        align-items: center;
        gap: 12px;
        color: var(--color-text-on-dark);
        font-weight: 700;
        font-size: 1.28rem;
        text-decoration: none;
    }

    .header-logo:hover {
        color: var(--color-text-on-dark);
    }

    .logo-mark {
        width: 36px;
        height: 36px;
        background: var(--color-accent);
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-mono);
        font-weight: 700;
        font-size: 1.05rem;
        color: #171310;
        flex-shrink: 0;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .header-login-link {
        color: var(--color-text-secondary-dark);
        font-size: 0.92rem;
        text-decoration: none;
        transition: color var(--transition);
    }

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

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 12px 24px;
        font-family: var(--font-sans);
        font-size: 0.95rem;
        font-weight: 600;
        border-radius: var(--radius-button);
        text-decoration: none;
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        line-height: 1.4;
    }

    .btn-primary {
        background: var(--color-accent);
        color: #171310;
    }

    .btn-primary:hover {
        background: var(--color-accent-hover);
        color: #171310;
    }

    .btn-primary:active {
        background: var(--color-accent-active);
        transform: scale(0.98);
    }

    .btn-outline {
        background: transparent;
        border: 1px solid var(--color-accent);
        color: var(--color-accent);
    }

    .btn-outline:hover {
        background: rgba(200,155,74,0.12);
        color: var(--color-accent);
    }

    .btn-outline:active {
        background: rgba(200,155,74,0.2);
        transform: scale(0.98);
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 0.86rem;
    }

    .btn-lg {
        padding: 16px 32px;
        font-size: 1.05rem;
    }

    /* Channel Row */
    .header-channel-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 0;
        transition: all var(--transition);
    }

    .channel-nav {
        display: flex;
        align-items: center;
        gap: 6px;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: wrap;
    }

    .channel-nav li {
        margin: 0;
    }

    .channel-nav a {
        display: inline-block;
        padding: 8px 14px;
        font-size: 0.92rem;
        font-weight: 500;
        color: var(--color-text-secondary-dark);
        text-decoration: none;
        border-radius: 6px;
        transition: all var(--transition);
        white-space: nowrap;
    }

    .channel-nav a:hover,
    .channel-nav a.active {
        color: var(--color-accent);
        background: rgba(200,155,74,0.1);
    }

    .header-cta-compact {
        display: inline-block;
        padding: 8px 18px;
        font-size: 0.86rem;
        background: var(--color-accent);
        color: #171310;
        border-radius: 6px;
        text-decoration: none;
        font-weight: 600;
        white-space: nowrap;
    }

    .header-cta-compact:hover {
        background: var(--color-accent-hover);
        color: #171310;
    }

    /* Scrolled state */
    .site-header.is-scrolled .header-brand-row {
        padding: 8px 0;
        border-bottom: none;
    }

    .site-header.is-scrolled .header-channel-row {
        padding: 4px 0;
    }

    .site-header.is-scrolled .header-brand-row {
        flex-direction: row;
    }

    .site-header.is-scrolled .header-logo {
        font-size: 1.08rem;
    }

    .site-header.is-scrolled .header-actions {
        gap: 10px;
    }

    .site-header.is-scrolled .header-login-link {
        font-size: 0.82rem;
    }

    .site-header.is-scrolled .header-cta-compact {
        padding: 6px 14px;
        font-size: 0.8rem;
    }

    .site-header.is-scrolled .channel-nav a {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    /* Mobile toggle */
    .mobile-toggle {
        display: none;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 8px;
        color: var(--color-text-on-dark);
    }

    .mobile-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: currentColor;
        margin: 5px 0;
        transition: all var(--transition);
        border-radius: 2px;
    }

    .mobile-toggle.is-open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .mobile-toggle.is-open span:nth-child(2) {
        opacity: 0;
    }

    .mobile-toggle.is-open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .mobile-drawer {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-primary);
        z-index: 99;
        padding: 80px 16px 40px;
        overflow-y: auto;
        transform: translateX(-100%);
        transition: transform var(--transition);
    }

    .mobile-drawer.is-open {
        transform: translateX(0);
    }

    .mobile-drawer .channel-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .mobile-drawer .channel-nav a {
        font-size: 1.1rem;
        padding: 12px 16px;
        width: 100%;
        color: var(--color-text-on-dark);
    }

    .mobile-drawer .mobile-actions {
        margin-top: 24px;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    /* ===== Hero ===== */
    .hero {
        position: relative;
        min-height: 100vh;
        background: var(--color-primary);
        color: var(--color-text-on-dark);
        display: flex;
        align-items: center;
        padding-top: 130px;
        padding-bottom: 0;
        overflow: hidden;
    }

    .hero-bg {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('/assets/images/c17f646d35879f7e.webp');
        background-size: cover;
        background-position: center;
        opacity: 0.35;
        z-index: 1;
    }

    .hero-slant-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 2;
        background: linear-gradient(155deg, rgba(23,19,16,0.92) 40%, rgba(23,19,16,0.5) 70%, rgba(23,19,16,0.85) 100%);
    }

    .hero-slant-accent {
        position: absolute;
        top: 40%;
        right: -8%;
        width: 45%;
        height: 55%;
        background: rgba(200,155,74,0.12);
        clip-path: polygon(22% 0, 100% 12%, 88% 100%, 8% 85%);
        z-index: 3;
        pointer-events: none;
    }

    .hero .container {
        position: relative;
        z-index: 5;
        width: 100%;
    }

    .hero-content {
        display: grid;
        grid-template-columns: 1fr;
        gap: 40px;
        padding-bottom: 56px;
    }

    .hero-text-block {
        max-width: 800px;
    }

    .hero-tagline {
        display: inline-block;
        font-family: var(--font-mono);
        font-size: 0.85rem;
        letter-spacing: 0.15em;
        text-transform: uppercase;
        color: var(--color-accent);
        margin-bottom: 16px;
        font-weight: 500;
    }

    .hero h1 {
        font-size: 3.2rem;
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 20px;
        color: var(--color-text-on-dark);
    }

    .hero h1 .accent-underline {
        color: var(--color-accent);
        border-bottom: 2px solid var(--color-accent);
        padding-bottom: 4px;
    }

    .hero-description {
        font-size: 1.1rem;
        line-height: 1.9;
        color: var(--color-text-secondary-dark);
        max-width: 720px;
        margin-bottom: 28px;
    }

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

    .hero-stats-row {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        padding: 24px;
        background: rgba(34,27,22,0.75);
        border: 1px solid var(--color-border-dark);
        border-radius: var(--radius-card);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }

    .stat-item {
        text-align: center;
        padding: 12px 8px;
    }

    .stat-number {
        font-family: var(--font-mono);
        font-size: 2rem;
        font-weight: 700;
        color: var(--color-accent);
        display: block;
        line-height: 1.2;
    }

    .stat-label {
        font-size: 0.88rem;
        color: var(--color-text-secondary-dark);
        margin-top: 6px;
        display: block;
    }

    /* ===== Generic Card Styles ===== */
    .content-card {
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-light);
        padding: 22px;
        transition: all var(--transition);
        height: 100%;
    }

    .content-card:hover {
        box-shadow: 0 8px 24px rgba(23,19,16,0.12);
        transform: translateY(-2px);
        border-color: var(--color-accent);
    }

    .content-card-dark {
        background: var(--color-card-dark);
        border: 1px solid var(--color-border-dark);
        box-shadow: var(--shadow-dark);
    }

    .card-icon {
        width: 44px;
        height: 44px;
        background: rgba(200,155,74,0.15);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-mono);
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--color-accent);
        margin-bottom: 14px;
    }

    .content-card h3,
    .content-card h4 {
        font-size: 1.12rem;
        font-weight: 600;
        color: var(--color-text-on-light);
    }

    .content-card p {
        font-size: 0.9rem;
        color: var(--color-text-secondary-light);
        line-height: 1.75;
        margin-bottom: 0;
    }

    .content-card-dark h3,
    .content-card-dark h4 {
        color: var(--color-text-on-dark);
    }

    .content-card-dark p {
        color: var(--color-text-secondary-dark);
    }

    /* ===== Topic Cards ===== */
    .topic-card {
        display: block;
        position: relative;
        overflow: hidden;
        border-radius: var(--radius-card);
        background: var(--color-primary);
        min-height: 200px;
        text-decoration: none;
        transition: all var(--transition);
    }

    .topic-card:hover {
        box-shadow: 0 10px 30px rgba(23,19,16,0.3);
        transform: translateY(-3px);
    }

    .topic-card img {
        width: 100%;
        height: 220px;
        object-fit: cover;
        opacity: 0.75;
        transition: opacity var(--transition);
    }

    .topic-card:hover img {
        opacity: 0.9;
    }

    .topic-card-overlay {
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        padding: 16px 20px;
        background: linear-gradient(transparent, rgba(23,19,16,0.92));
    }

    .topic-card-overlay h4 {
        color: var(--color-text-on-dark);
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 4px;
    }

    .topic-card-overlay p {
        color: var(--color-text-secondary-dark);
        font-size: 0.85rem;
        margin-bottom: 0;
    }

    /* ===== Comparison / Progress ===== */
    .comparison-item {
        margin-bottom: 18px;
    }

    .comparison-item:last-child {
        margin-bottom: 0;
    }

    .comparison-label {
        display: flex;
        justify-content: space-between;
        font-size: 0.9rem;
        margin-bottom: 6px;
        color: var(--color-text-secondary-light);
    }

    .comparison-label strong {
        font-weight: 600;
        color: var(--color-text-on-light);
    }

    .comparison-bar {
        height: 8px;
        background: #e5ddd2;
        border-radius: 4px;
        overflow: hidden;
    }

    .comparison-bar-fill {
        height: 100%;
        background: var(--color-accent);
        border-radius: 4px;
        transition: width 600ms ease;
    }

    .section-dark .comparison-label {
        color: var(--color-text-secondary-dark);
    }

    .section-dark .comparison-label strong {
        color: var(--color-text-on-dark);
    }

    .section-dark .comparison-bar {
        background: #3a2f28;
    }

    /* ===== Timeline ===== */
    .timeline {
        position: relative;
        padding-left: 28px;
    }

    .timeline::before {
        content: '';
        position: absolute;
        left: 8px;
        top: 0;
        bottom: 0;
        width: 2px;
        background: var(--color-border-light);
    }

    .timeline-item {
        position: relative;
        padding-bottom: 28px;
    }

    .timeline-item:last-child {
        padding-bottom: 0;
    }

    .timeline-dot {
        position: absolute;
        left: -26px;
        top: 4px;
        width: 14px;
        height: 14px;
        background: var(--color-accent);
        border-radius: 50%;
        border: 3px solid #faf8f5;
    }

    .timeline-year {
        font-family: var(--font-mono);
        font-size: 0.85rem;
        color: var(--color-accent);
        font-weight: 600;
        margin-bottom: 4px;
    }

    .timeline-title {
        font-weight: 600;
        font-size: 1rem;
        color: var(--color-text-on-light);
        margin-bottom: 4px;
    }

    .timeline-desc {
        font-size: 0.9rem;
        color: var(--color-text-secondary-light);
        margin-bottom: 0;
    }

    .section-dark .timeline::before {
        background: var(--color-border-dark);
    }

    .section-dark .timeline-dot {
        border-color: var(--color-primary);
    }

    .section-dark .timeline-title {
        color: var(--color-text-on-dark);
    }

    .section-dark .timeline-desc {
        color: var(--color-text-secondary-dark);
    }

    /* ===== News / CMS Items ===== */
    .news-card {
        display: flex;
        gap: 18px;
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        padding: 16px;
        transition: all var(--transition);
        height: 100%;
    }

    .news-card:hover {
        box-shadow: var(--shadow-light);
        border-color: var(--color-accent);
        transform: translateY(-2px);
    }

    .news-card-img {
        width: 100px;
        height: 80px;
        flex-shrink: 0;
        border-radius: 6px;
        overflow: hidden;
        background: #ddcfc0;
    }

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

    .news-card-body {
        flex: 1;
        min-width: 0;
    }

    .news-card-body h3 {
        font-size: 0.98rem;
        font-weight: 600;
        margin-bottom: 6px;
        color: var(--color-text-on-light);
        line-height: 1.4;
    }

    .news-card-body a {
        text-decoration: none;
        color: inherit;
    }

    .news-card-body a:hover {
        color: var(--color-accent);
    }

    .news-card-meta {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.8rem;
        color: var(--color-text-muted-dark);
        font-family: var(--font-mono);
    }

    .news-tag {
        display: inline-block;
        background: rgba(200,155,74,0.12);
        color: var(--color-accent);
        padding: 3px 10px;
        border-radius: 4px;
        font-size: 0.78rem;
        font-weight: 500;
        font-family: var(--font-sans);
    }

    .empty-state {
        text-align: center;
        padding: 48px 24px;
        color: var(--color-text-muted-dark);
    }

    .empty-state .empty-icon {
        font-size: 3rem;
        color: var(--color-border-light);
        margin-bottom: 12px;
    }

    /* ===== Security Cards ===== */
    .security-card {
        text-align: center;
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        padding: 24px 18px;
        height: 100%;
        transition: all var(--transition);
    }

    .security-card:hover {
        border-color: var(--color-accent);
        box-shadow: var(--shadow-light);
    }

    .security-card-icon {
        font-size: 2.2rem;
        margin-bottom: 12px;
        display: block;
    }

    .security-card h4 {
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 6px;
        color: var(--color-text-on-light);
    }

    .security-card p {
        font-size: 0.85rem;
        color: var(--color-text-secondary-light);
        line-height: 1.6;
        margin-bottom: 0;
    }

    /* ===== Quick Help Tags ===== */
    .quick-help-list {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .quick-help-tag {
        display: inline-block;
        padding: 10px 18px;
        background: var(--color-card-light);
        border: 1px solid var(--color-border-light);
        border-radius: 20px;
        font-size: 0.9rem;
        text-decoration: none;
        color: var(--color-text-on-light);
        transition: all var(--transition);
    }

    .quick-help-tag:hover {
        background: var(--color-accent);
        border-color: var(--color-accent);
        color: #171310;
    }

    /* ===== FAQ Accordion ===== */
    .faq-item {
        background: var(--color-card-light);
        border: 1px solid var(--color-border-light);
        border-radius: 8px;
        margin-bottom: 10px;
        overflow: hidden;
        transition: all var(--transition);
    }

    .faq-item:hover {
        border-color: var(--color-accent);
    }

    .faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 16px 20px;
        cursor: pointer;
        user-select: none;
        font-weight: 600;
        font-size: 1rem;
        color: var(--color-text-on-light);
        background: transparent;
        border: none;
        width: 100%;
        text-align: left;
        min-height: 48px;
        transition: all var(--transition);
        font-family: var(--font-sans);
    }

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

    .faq-icon {
        font-size: 1.3rem;
        color: var(--color-accent);
        flex-shrink: 0;
        margin-left: 12px;
        transition: transform var(--transition);
    }

    .faq-item.is-open .faq-icon {
        transform: rotate(45deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition), padding var(--transition);
        padding: 0 20px;
        color: var(--color-text-secondary-light);
        font-size: 0.92rem;
        line-height: 1.8;
    }

    .faq-item.is-open .faq-answer {
        max-height: 300px;
        padding: 0 20px 16px;
    }

    /* ===== CTA Form ===== */
    .cta-form-section {
        background: var(--color-primary);
        color: var(--color-text-on-dark);
    }

    .cta-form-card {
        background: rgba(34,27,22,0.7);
        border: 1px solid var(--color-border-dark);
        border-radius: var(--radius-card);
        padding: 32px;
    }

    .cta-form-card h3 {
        color: var(--color-text-on-dark);
        font-size: 1.4rem;
        font-weight: 600;
        margin-bottom: 8px;
    }

    .cta-form-card p {
        color: var(--color-text-secondary-dark);
        font-size: 0.92rem;
        margin-bottom: 20px;
    }

    .form-group {
        margin-bottom: 16px;
    }

    .form-group label {
        display: block;
        font-size: 0.88rem;
        color: var(--color-text-secondary-dark);
        margin-bottom: 6px;
        font-weight: 500;
    }

    .form-input {
        width: 100%;
        padding: 12px 16px;
        background: transparent;
        border: 1px solid var(--color-border-dark);
        border-radius: 6px;
        color: var(--color-text-on-dark);
        font-size: 0.95rem;
        font-family: var(--font-sans);
        transition: border-color var(--transition);
        box-sizing: border-box;
    }

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

    .form-input:focus {
        border-color: var(--color-accent);
        outline: none;
    }

    select.form-input {
        appearance: none;
        -webkit-appearance: none;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236B5F52' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 14px center;
    }

    select.form-input option {
        background: var(--color-card-dark);
        color: var(--color-text-on-dark);
    }

    /* ===== Guide / Scenario ===== */
    .guide-block {
        display: flex;
        align-items: center;
        gap: 32px;
        margin-bottom: 32px;
    }

    .guide-block:last-child {
        margin-bottom: 0;
    }

    .guide-block.reverse {
        flex-direction: row-reverse;
    }

    .guide-image {
        flex: 1;
        min-width: 0;
        border-radius: var(--radius-card);
        overflow: hidden;
    }

    .guide-image img {
        width: 100%;
        height: 220px;
        object-fit: cover;
        border-radius: var(--radius-card);
    }

    .guide-text {
        flex: 1;
        min-width: 0;
    }

    .guide-text h3 {
        font-size: 1.15rem;
        font-weight: 600;
        color: var(--color-text-on-light);
        margin-bottom: 8px;
    }

    .guide-text p {
        font-size: 0.92rem;
        color: var(--color-text-secondary-light);
        line-height: 1.8;
        margin-bottom: 0;
    }

    .guide-step-num {
        font-family: var(--font-mono);
        font-size: 0.8rem;
        color: var(--color-accent);
        font-weight: 600;
        display: block;
        margin-bottom: 6px;
    }

    /* ===== Feedback / Reviews ===== */
    .review-card {
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        padding: 22px;
        height: 100%;
        transition: all var(--transition);
    }

    .review-card:hover {
        box-shadow: var(--shadow-light);
        border-color: var(--color-accent);
    }

    .review-stars {
        color: var(--color-accent);
        font-size: 1.1rem;
        letter-spacing: 3px;
        margin-bottom: 10px;
    }

    .review-card p {
        font-size: 0.9rem;
        color: var(--color-text-secondary-light);
        line-height: 1.75;
        margin-bottom: 12px;
    }

    .review-author {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--color-text-on-light);
    }

    .review-role {
        font-size: 0.8rem;
        color: var(--color-text-muted-dark);
    }

    /* ===== Changelog ===== */
    .changelog-item {
        display: flex;
        align-items: flex-start;
        gap: 16px;
        padding: 16px 0;
        border-bottom: 1px solid var(--color-border-light);
    }

    .changelog-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    .changelog-version {
        font-family: var(--font-mono);
        font-size: 0.82rem;
        font-weight: 600;
        color: var(--color-accent);
        background: rgba(200,155,74,0.1);
        padding: 4px 10px;
        border-radius: 4px;
        flex-shrink: 0;
        white-space: nowrap;
    }

    .changelog-date {
        font-family: var(--font-mono);
        font-size: 0.8rem;
        color: var(--color-text-muted-dark);
        flex-shrink: 0;
        white-space: nowrap;
    }

    .changelog-desc {
        font-size: 0.9rem;
        color: var(--color-text-secondary-light);
        margin-bottom: 0;
    }

    /* ===== Resource / Access ===== */
    .access-card {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 20px;
        background: var(--color-card-light);
        border: 1px solid var(--color-border-light);
        border-radius: var(--radius-card);
        text-decoration: none;
        transition: all var(--transition);
        height: 100%;
    }

    .access-card:hover {
        border-color: var(--color-accent);
        box-shadow: var(--shadow-light);
        transform: translateY(-2px);
    }

    .access-card-icon {
        width: 48px;
        height: 48px;
        background: rgba(200,155,74,0.14);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.5rem;
        flex-shrink: 0;
        color: var(--color-accent);
    }

    .access-card h4 {
        font-size: 1rem;
        font-weight: 600;
        color: var(--color-text-on-light);
        margin-bottom: 4px;
    }

    .access-card p {
        font-size: 0.82rem;
        color: var(--color-text-secondary-light);
        margin-bottom: 0;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--color-primary);
        color: var(--color-text-secondary-dark);
        padding: 56px 0 24px;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 36px;
        border-bottom: 1px solid var(--color-border-dark);
    }

    .footer-brand h3 {
        color: var(--color-text-on-dark);
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 12px;
    }

    .footer-brand p {
        font-size: 0.88rem;
        color: var(--color-text-muted-dark);
        line-height: 1.7;
        margin-bottom: 0;
        max-width: 280px;
    }

    .footer-col h4 {
        color: var(--color-text-on-dark);
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 14px;
    }

    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .footer-col ul li {
        margin-bottom: 8px;
    }

    .footer-col ul li a {
        color: var(--color-text-secondary-dark);
        font-size: 0.88rem;
        text-decoration: none;
        transition: color var(--transition);
    }

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

    .footer-bottom {
        padding-top: 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 0.82rem;
        color: var(--color-text-muted-dark);
    }

    .footer-bottom p {
        margin-bottom: 0;
    }

    /* ===== Foundation Overrides ===== */
    .grid-x .grid-margin-x {
        margin-left: -12px;
        margin-right: -12px;
    }

    .grid-margin-x > .cell {
        padding-left: 12px;
        padding-right: 12px;
    }

    /* ===== Responsive ===== */
    @media screen and (max-width: 1024px) {
        :root {
            --section-padding: 48px;
        }

        .hero h1 {
            font-size: 2.4rem;
        }

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

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

        .header-channel-row {
            flex-wrap: wrap;
        }

        .channel-nav {
            gap: 2px;
        }

        .channel-nav a {
            padding: 6px 10px;
            font-size: 0.85rem;
        }

        .guide-block,
        .guide-block.reverse {
            flex-direction: column;
            gap: 18px;
        }
    }

    @media screen and (max-width: 768px) {
        :root {
            --section-padding: 40px;
        }

        .hero {
            padding-top: 100px;
            min-height: auto;
            padding-bottom: 0;
        }

        .hero h1 {
            font-size: 1.85rem;
        }

        .hero-description {
            font-size: 0.98rem;
        }

        .hero-stats-row {
            grid-template-columns: repeat(2, 1fr);
            gap: 8px;
            padding: 16px;
        }

        .stat-number {
            font-size: 1.5rem;
        }

        .section-title {
            font-size: 1.6rem;
        }

        .section-subtitle {
            font-size: 0.95rem;
        }

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

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

        /* Mobile nav */
        .mobile-toggle {
            display: block;
        }

        .header-channel-row {
            display: none;
        }

        .mobile-drawer {
            display: block;
        }

        .header-brand-row {
            padding: 10px 0;
        }

        .header-logo {
            font-size: 1.05rem;
        }

        .header-actions .header-login-link {
            display: none;
        }

        .header-actions .btn {
            padding: 8px 14px;
            font-size: 0.82rem;
        }

        .site-header.is-scrolled .header-brand-row {
            padding: 6px 0;
        }

        .site-header.is-scrolled .header-logo {
            font-size: 0.95rem;
        }

        .site-header.is-scrolled .header-actions .btn {
            padding: 6px 12px;
            font-size: 0.78rem;
        }
    }

    @media screen and (max-width: 520px) {
        .hero h1 {
            font-size: 1.55rem;
        }

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

        .stat-number {
            font-size: 1.25rem;
        }

        .section-title {
            font-size: 1.35rem;
        }

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

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

        .news-card {
            flex-direction: column;
        }

        .news-card-img {
            width: 100%;
            height: 140px;
        }

        .comparison-label {
            font-size: 0.82rem;
        }
    }

/* roulang page: article */
:root {
            --color-primary: #171310;
            --color-accent: #C89B4A;
            --color-light: #F2EDE6;
            --color-text-on-dark: #F5F0E8;
            --color-text-secondary-dark: #A89A8A;
            --color-text-muted-dark: #6B5F52;
            --color-text-on-light: #171310;
            --color-text-secondary-light: #4A3E33;
            --color-border-dark: #3A2F28;
            --color-border-light: #D8CCC0;
            --color-card-dark: #221B16;
            --color-card-light: #F2EDE6;
            --color-accent-hover: #E0AF5E;
            --color-accent-active: #A87F38;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', monospace;
            --radius-card: 10px;
            --radius-button: 8px;
            --shadow-dark: 0 4px 14px rgba(0,0,0,0.35);
            --shadow-light: 0 2px 10px rgba(23,19,16,0.08);
            --transition: 300ms ease;
            --section-padding: 72px;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-on-light);
            background: #faf8f5;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

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

        .section {
            padding-top: var(--section-padding);
            padding-bottom: var(--section-padding);
            position: relative;
        }

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

        .section-dark {
            background: var(--color-primary);
            color: var(--color-text-on-dark);
        }

        .section-divider-top {
            border-top: 1px solid var(--color-border-light);
        }

        .section-divider-bottom {
            border-bottom: 1px solid var(--color-border-light);
        }

        .section-label {
            display: inline-block;
            font-family: var(--font-mono);
            font-size: 0.8rem;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 12px;
            font-weight: 500;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: inherit;
        }

        .section-subtitle {
            font-size: 1.06rem;
            line-height: 1.85;
            max-width: 780px;
            color: var(--color-text-secondary-light);
            margin-bottom: 36px;
        }

        .section-dark .section-title {
            color: var(--color-text-on-dark);
        }

        .section-dark .section-subtitle {
            color: var(--color-text-secondary-dark);
        }

        .narrow {
            max-width: 720px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: var(--color-primary);
            transition: all var(--transition);
            box-shadow: 0 2px 12px rgba(0,0,0,0.25);
        }

        .header-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(58,47,40,0.5);
            transition: all var(--transition);
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--color-text-on-dark);
            font-weight: 700;
            font-size: 1.28rem;
            text-decoration: none;
            white-space: nowrap;
        }

        .header-logo:hover {
            color: var(--color-text-on-dark);
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 1.05rem;
            color: #171310;
            flex-shrink: 0;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .header-login-link {
            color: var(--color-text-secondary-dark);
            font-size: 0.92rem;
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-button);
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #171310;
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: #171310;
        }

        .btn-primary:active {
            background: var(--color-accent-active);
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-accent);
            color: var(--color-accent);
        }

        .btn-outline:hover {
            background: rgba(200,155,74,0.12);
            color: var(--color-accent);
        }

        .btn-outline:active {
            background: rgba(200,155,74,0.2);
            transform: scale(0.98);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 0.88rem;
        }

        .header-channel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            transition: all var(--transition);
        }

        .channel-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .channel-nav li {
            margin: 0;
        }

        .channel-nav a {
            color: var(--color-text-secondary-dark);
            text-decoration: none;
            font-size: 0.92rem;
            transition: color var(--transition);
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
        }

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

        .channel-nav a.active {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }

        .header-cta-compact {
            display: inline-flex;
            align-items: center;
            color: var(--color-accent);
            font-size: 0.88rem;
            font-weight: 600;
            text-decoration: none;
            transition: color var(--transition);
        }

        .header-cta-compact:hover {
            color: var(--color-accent-hover);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 0 8px;
            background: transparent;
            border: 1px solid var(--color-border-dark);
            border-radius: 6px;
            cursor: pointer;
        }

        .mobile-toggle span {
            display: block;
            height: 2px;
            width: 100%;
            background: var(--color-text-on-dark);
            border-radius: 1px;
            transition: all var(--transition);
        }

        .site-header.scrolled .header-brand-row {
            padding: 8px 0;
            border-bottom: 0;
        }

        .site-header.scrolled .header-channel-row {
            display: none;
        }

        @media (max-width: 1024px) {
            .channel-nav {
                gap: 18px;
            }
            .header-login-link {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .header-channel-row {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-brand-row {
                padding: 10px 0;
                border-bottom: 0;
            }
            .header-actions .btn-sm {
                display: none;
            }
            .site-header.mobile-open .header-channel-row {
                display: block;
                padding: 8px 0 16px;
                border-top: 1px solid rgba(58,47,40,0.5);
            }
            .site-header.mobile-open .channel-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(23,19,16,0.95) 0%, rgba(23,19,16,0.78) 100%),
                url('/assets/images/f7b6cd9c6785536a.jpg') center / cover no-repeat;
            color: var(--color-text-on-dark);
            padding-top: 160px;
            padding-bottom: 56px;
            border-bottom: 1px solid var(--color-border-dark);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-secondary-dark);
            margin-bottom: 14px;
        }

        .breadcrumb a {
            color: var(--color-text-secondary-dark);
            text-decoration: none;
            transition: color var(--transition);
        }

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

        .breadcrumb .sep {
            color: var(--color-text-muted-dark);
            margin: 0 3px;
        }

        .article-category-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(200,155,74,0.18);
            border: 1px solid rgba(200,155,74,0.45);
            color: var(--color-accent);
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 14px;
            color: var(--color-text-on-dark);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-family: var(--font-mono);
            font-size: 0.88rem;
            color: var(--color-text-secondary-dark);
        }

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

        .article-meta strong {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* ===== Article Main Layout ===== */
        .article-main {
            background: #faf8f5;
            padding-top: 44px;
            padding-bottom: 48px;
        }

        .article-body-wrap {
            background: #fff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-light);
            padding: 28px 32px 40px;
        }

        .article-body {
            line-height: 1.9;
            font-size: 1.02rem;
            color: #2a211b;
        }

        .article-body h2,
        .article-body h3 {
            color: #171310;
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            line-height: 1.35;
            font-weight: 700;
        }

        .article-body h2 {
            font-size: 1.55rem;
        }

        .article-body h3 {
            font-size: 1.25rem;
        }

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

        .article-body img {
            border-radius: 8px;
            margin: 1.4em 0;
        }

        .article-body blockquote {
            margin: 1.6em 0;
            padding: 16px 20px;
            border-left: 4px solid var(--color-accent);
            background: #faf6ef;
            border-radius: 0 8px 8px 0;
            color: var(--color-text-secondary-light);
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5em;
            margin-bottom: 1.5em;
        }

        .article-body li {
            margin-bottom: 0.5em;
        }

        .article-body a {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--color-light);
            border: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 1.8rem;
            color: var(--color-accent);
            margin: 0 auto 18px;
        }

        .article-not-found h2 {
            font-size: 1.5rem;
            margin-bottom: 8px;
            color: #171310;
        }

        .article-not-found p {
            color: var(--color-text-secondary-light);
            margin-bottom: 24px;
        }

        /* ===== Share & Prev/Next ===== */
        .article-share {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            padding: 20px 0;
            margin: 28px 0 10px;
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }

        .share-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: #171310;
        }

        .share-buttons {
            display: flex;
            gap: 10px;
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 44px;
            height: 44px;
            padding: 0 14px;
            border-radius: 8px;
            border: 1px solid var(--color-border-light);
            background: #fff;
            color: #4A3E33;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition);
        }

        .share-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(200,155,74,0.08);
        }

        .share-btn:active {
            transform: scale(0.98);
        }

        .article-prev-next {
            margin-top: 24px;
            margin-bottom: 24px;
        }

        .prev-next-card {
            display: block;
            background: #fff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            color: #171310;
            text-decoration: none;
            transition: all var(--transition);
            height: 100%;
            box-shadow: var(--shadow-light);
        }

        .prev-next-card:hover {
            border-color: var(--color-accent);
            color: #171310;
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(23,19,16,0.1);
        }

        .prev-next-card.disabled {
            opacity: 0.55;
            pointer-events: none;
            box-shadow: none;
        }

        .prev-next-label {
            display: block;
            font-size: 0.78rem;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            margin-bottom: 8px;
            font-family: var(--font-mono);
            text-transform: uppercase;
        }

        .prev-next-title {
            font-weight: 600;
            font-size: 0.98rem;
            line-height: 1.5;
        }

        .article-back {
            display: flex;
            justify-content: center;
            margin: 24px 0 8px;
        }

        /* ===== Aside ===== */
        .article-aside {
            position: sticky;
            top: 130px;
        }

        .aside-card {
            background: var(--color-card-dark);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-dark);
            box-shadow: var(--shadow-dark);
            padding: 22px 20px;
            color: var(--color-text-on-dark);
            margin-bottom: 20px;
        }

        .aside-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text-on-dark);
        }

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

        .aside-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid rgba(58,47,40,0.65);
            font-size: 0.92rem;
        }

        .aside-list li:last-child {
            border-bottom: 0;
        }

        .aside-list .label {
            color: var(--color-text-secondary-dark);
        }

        .aside-list .value {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--color-accent);
        }

        .aside-note {
            font-size: 0.85rem;
            color: var(--color-text-secondary-dark);
            line-height: 1.7;
        }

        .aside-cta {
            display: block;
            text-align: center;
            margin-top: 14px;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--color-light);
            border-top: 1px solid var(--color-border-light);
        }

        .related-section .section-title {
            color: #171310;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-light);
            overflow: hidden;
            height: 100%;
            text-decoration: none;
            color: #171310;
            transition: all var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 24px rgba(23,19,16,0.12);
            color: #171310;
        }

        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-card-title {
            font-size: 1.03rem;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .related-card-meta {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--color-text-secondary-light);
            margin-top: auto;
        }

        /* ===== FAQ ===== */
        .article-faq {
            background: #faf8f5;
        }

        .article-faq .section-title {
            color: #171310;
        }

        .faq-accordion {
            margin-top: 20px;
            border-top: 1px solid var(--color-border-light);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 4px;
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: #171310;
            transition: color var(--transition);
            min-height: 48px;
            gap: 16px;
        }

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

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--color-border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--color-accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            color: var(--color-text-secondary-light);
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            max-height: 220px;
        }

        .faq-answer p {
            padding: 0 4px 18px;
            margin: 0;
        }

        /* ===== CTA ===== */
        .article-cta {
            background: linear-gradient(135deg, #171310 0%, #2a211b 100%);
            color: var(--color-text-on-dark);
            text-align: center;
            border-top: 1px solid var(--color-border-dark);
        }

        .article-cta h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
            color: var(--color-text-on-dark);
        }

        .article-cta p {
            max-width: 620px;
            margin: 0 auto 26px;
            color: var(--color-text-secondary-dark);
            line-height: 1.8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: var(--color-text-on-dark);
            padding-top: 56px;
            padding-bottom: 24px;
            border-top: 1px solid var(--color-border-dark);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 34px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text-on-dark);
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: var(--color-text-secondary-dark);
            line-height: 1.8;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text-on-dark);
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col li {
            margin-bottom: 8px;
        }

        .footer-col a {
            color: var(--color-text-secondary-dark);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--color-border-dark);
            padding-top: 18px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--color-text-muted-dark);
        }

        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 1024px) {
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .article-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-padding: 48px;
            }
            .header-brand-row {
                padding: 10px 0;
            }
            .article-hero {
                padding-top: 120px;
                padding-bottom: 36px;
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .article-body-wrap {
                padding: 20px 18px 28px;
            }
            .article-share {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-aside {
                position: static;
                margin-top: 20px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-padding: 40px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .article-hero h1 {
                font-size: 1.45rem;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .related-card img {
                height: 160px;
            }
        }

/* roulang page: category1 */
:root {
        --color-primary: #171310;
        --color-accent: #C89B4A;
        --color-light: #F2EDE6;
        --color-text-on-dark: #F5F0E8;
        --color-text-secondary-dark: #A89A8A;
        --color-text-muted-dark: #6B5F52;
        --color-text-on-light: #171310;
        --color-text-secondary-light: #4A3E33;
        --color-border-dark: #3A2F28;
        --color-border-light: #D8CCC0;
        --color-card-dark: #221B16;
        --color-card-light: #F2EDE6;
        --color-accent-hover: #E0AF5E;
        --color-accent-active: #A87F38;
        --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
        --font-mono: 'SF Mono', 'Consolas', monospace;
        --radius-card: 10px;
        --radius-button: 8px;
        --shadow-dark: 0 4px 14px rgba(0,0,0,0.35);
        --shadow-light: 0 2px 10px rgba(23,19,16,0.08);
        --transition: 300ms ease;
        --section-padding: 72px;
        --container-max: 1200px;
    }

    @media (max-width: 640px) {
        :root {
            --section-padding: 44px;
        }
    }

    @media (max-width: 480px) {
        :root {
            --section-padding: 36px;
        }
    }

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

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        margin: 0;
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--color-text-on-light);
        background: #faf8f5;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
        padding-top: 120px;
    }

    @media (max-width: 1024px) {
        body {
            padding-top: 70px;
        }
    }

    @media (max-width: 640px) {
        body {
            padding-top: 62px;
        }
    }

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

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

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

    a:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 2px;
    }

    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 2px;
    }

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

    .section {
        padding-top: var(--section-padding);
        padding-bottom: var(--section-padding);
        position: relative;
    }

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

    .section-dark {
        background: var(--color-primary);
        color: var(--color-text-on-dark);
    }

    .section-divider-top {
        border-top: 1px solid var(--color-border-light);
    }

    .section-divider-bottom {
        border-bottom: 1px solid var(--color-border-light);
    }

    .section-label {
        display: inline-block;
        font-family: var(--font-mono);
        font-size: 0.8rem;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--color-accent);
        margin-bottom: 12px;
        font-weight: 500;
    }

    .section-title {
        font-size: 2.2rem;
        font-weight: 700;
        line-height: 1.25;
        margin-bottom: 16px;
        color: inherit;
    }

    .section-subtitle {
        font-size: 1.06rem;
        line-height: 1.85;
        max-width: 780px;
        color: var(--color-text-secondary-light);
        margin-bottom: 36px;
    }

    .section-dark .section-title {
        color: var(--color-text-on-dark);
    }

    .section-dark .section-subtitle {
        color: var(--color-text-secondary-dark);
    }

    /* ===== Header / Navigation ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: var(--color-primary);
        transition: all var(--transition);
        box-shadow: 0 2px 12px rgba(0,0,0,0.25);
    }

    .site-header.compact {
        box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    }

    .site-header.compact .header-brand-row {
        padding: 8px 0;
        border-bottom: none;
    }

    .site-header.compact .header-channel-row {
        display: none;
    }

    .header-brand-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        border-bottom: 1px solid rgba(58,47,40,0.5);
        transition: all var(--transition);
    }

    .header-logo {
        display: flex;
        align-items: center;
        gap: 12px;
        color: var(--color-text-on-dark);
        font-weight: 700;
        font-size: 1.28rem;
        text-decoration: none;
        white-space: nowrap;
    }

    .header-logo:hover {
        color: var(--color-text-on-dark);
    }

    .logo-mark {
        width: 36px;
        height: 36px;
        background: var(--color-accent);
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-mono);
        font-weight: 700;
        font-size: 1.05rem;
        color: #171310;
        flex-shrink: 0;
    }

    .header-actions {
        display: flex;
        align-items: center;
        gap: 16px;
    }

    .header-login-link {
        color: var(--color-text-secondary-dark);
        font-size: 0.92rem;
        text-decoration: none;
        transition: color var(--transition);
        white-space: nowrap;
    }

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

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 12px 24px;
        font-family: var(--font-sans);
        font-size: 0.95rem;
        font-weight: 600;
        border-radius: var(--radius-button);
        text-decoration: none;
        border: none;
        cursor: pointer;
        transition: all var(--transition);
        line-height: 1.4;
        white-space: nowrap;
    }

    .btn-sm {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .btn-primary {
        background: var(--color-accent);
        color: #171310;
    }

    .btn-primary:hover {
        background: var(--color-accent-hover);
        color: #171310;
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(200,155,74,0.3);
    }

    .btn-primary:active {
        background: var(--color-accent-active);
        transform: scale(0.98);
    }

    .btn-outline {
        background: transparent;
        border: 1px solid var(--color-accent);
        color: var(--color-accent);
    }

    .btn-outline:hover {
        background: rgba(200,155,74,0.12);
        color: var(--color-accent-hover);
    }

    .btn-outline:active {
        background: rgba(200,155,74,0.2);
        transform: scale(0.98);
    }

    .header-channel-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 8px 0;
        transition: all var(--transition);
    }

    .channel-nav {
        display: flex;
        align-items: center;
        gap: 28px;
        list-style: none;
        margin: 0;
        padding: 0;
        flex-wrap: wrap;
    }

    .channel-nav li {
        margin: 0;
    }

    .channel-nav a {
        color: var(--color-text-secondary-dark);
        font-size: 0.92rem;
        text-decoration: none;
        padding: 6px 2px;
        border-bottom: 2px solid transparent;
        transition: all var(--transition);
        white-space: nowrap;
    }

    .channel-nav a:hover {
        color: var(--color-accent);
        border-bottom-color: var(--color-accent);
    }

    .channel-nav a.active {
        color: var(--color-accent);
        border-bottom-color: var(--color-accent);
        font-weight: 600;
    }

    .header-cta-compact {
        color: var(--color-accent);
        font-size: 0.85rem;
        font-weight: 600;
        text-decoration: none;
        padding: 6px 12px;
        border: 1px solid var(--color-accent);
        border-radius: 6px;
        transition: all var(--transition);
        white-space: nowrap;
    }

    .header-cta-compact:hover {
        background: rgba(200,155,74,0.12);
        color: var(--color-accent-hover);
    }

    .mobile-toggle {
        display: none;
        flex-direction: column;
        gap: 5px;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
    }

    .mobile-toggle span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--color-text-on-dark);
        border-radius: 1px;
        transition: all var(--transition);
    }

    /* Mobile drawer */
    .mobile-drawer {
        display: none;
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 340px;
        height: 100vh;
        background: var(--color-primary);
        z-index: 200;
        box-shadow: -4px 0 20px rgba(0,0,0,0.5);
        transition: right var(--transition);
        padding: 24px 20px;
        overflow-y: auto;
    }

    .mobile-drawer.open {
        right: 0;
    }

    .mobile-drawer-close {
        position: absolute;
        top: 16px;
        right: 16px;
        background: none;
        border: none;
        color: var(--color-text-on-dark);
        font-size: 1.5rem;
        cursor: pointer;
    }

    .mobile-drawer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--color-text-on-dark);
        font-weight: 700;
        font-size: 1.15rem;
        margin-bottom: 28px;
    }

    .mobile-drawer-nav {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .mobile-drawer-nav li {
        margin-bottom: 4px;
    }

    .mobile-drawer-nav a {
        display: block;
        color: var(--color-text-secondary-dark);
        font-size: 1rem;
        padding: 14px 0;
        border-bottom: 1px solid var(--color-border-dark);
        text-decoration: none;
        transition: color var(--transition);
    }

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

    .mobile-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 150;
        opacity: 0;
        transition: opacity var(--transition);
    }

    .mobile-overlay.show {
        display: block;
        opacity: 1;
    }

    /* ===== Category Hero ===== */
    .category-hero {
        background: var(--color-primary);
        color: var(--color-text-on-dark);
        padding: 48px 0 40px;
        position: relative;
        overflow: hidden;
    }

    .category-hero::before {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 40%;
        height: 100%;
        background: url('/assets/images/8bfdf950807cc098.webp') center/cover no-repeat;
        opacity: 0.15;
        pointer-events: none;
    }

    .category-hero .container {
        position: relative;
        z-index: 1;
    }

    .category-hero-inner {
        display: flex;
        align-items: flex-end;
        justify-content: space-between;
        gap: 30px;
        flex-wrap: wrap;
    }

    .category-hero-main {
        max-width: 680px;
    }

    .category-badge {
        display: inline-block;
        font-family: var(--font-mono);
        font-size: 0.78rem;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--color-accent);
        background: rgba(200,155,74,0.12);
        border: 1px solid rgba(200,155,74,0.35);
        padding: 4px 12px;
        border-radius: 20px;
        margin-bottom: 14px;
    }

    .category-hero h1 {
        font-size: 2.4rem;
        font-weight: 700;
        line-height: 1.2;
        margin-bottom: 12px;
        color: var(--color-text-on-dark);
    }

    .category-hero-desc {
        font-size: 1.05rem;
        line-height: 1.8;
        color: var(--color-text-secondary-dark);
        max-width: 560px;
        margin-bottom: 0;
    }

    .category-hero-stats {
        display: flex;
        gap: 32px;
        flex-shrink: 0;
    }

    .hero-stat {
        text-align: left;
    }

    .hero-stat-number {
        font-family: var(--font-mono);
        font-size: 1.8rem;
        font-weight: 700;
        color: var(--color-accent);
        display: block;
        line-height: 1.2;
    }

    .hero-stat-label {
        font-size: 0.85rem;
        color: var(--color-text-muted-dark);
        display: block;
        margin-top: 2px;
    }

    /* ===== Category Tabs ===== */
    .category-tabs-section {
        background: var(--color-primary);
        border-top: 1px solid var(--color-border-dark);
        padding: 0;
    }

    .category-tabs {
        display: flex;
        align-items: center;
        gap: 8px;
        overflow-x: auto;
        padding: 14px 0;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-color: var(--color-border-dark) transparent;
    }

    .category-tab {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 0.88rem;
        font-weight: 500;
        color: var(--color-text-secondary-dark);
        text-decoration: none;
        white-space: nowrap;
        border: 1px solid transparent;
        transition: all var(--transition);
        background: transparent;
    }

    .category-tab:hover {
        color: var(--color-accent);
        border-color: rgba(200,155,74,0.4);
        background: rgba(200,155,74,0.08);
    }

    .category-tab.active {
        background: var(--color-accent);
        color: #171310;
        font-weight: 600;
    }

    .category-tab .fa {
        font-size: 0.75rem;
    }

    /* ===== Content Grid ===== */
    .content-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .content-card {
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-light);
        overflow: hidden;
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
    }

    .content-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 24px rgba(23,19,16,0.12);
    }

    .content-card-thumb {
        aspect-ratio: 16/9;
        overflow: hidden;
        background: #e8e0d8;
        position: relative;
    }

    .content-card-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform var(--transition);
    }

    .content-card:hover .content-card-thumb img {
        transform: scale(1.04);
    }

    .content-card-body {
        padding: 18px 20px 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .content-card-tag {
        display: inline-block;
        font-family: var(--font-mono);
        font-size: 0.72rem;
        letter-spacing: 0.08em;
        color: var(--color-accent);
        background: rgba(200,155,74,0.1);
        padding: 3px 10px;
        border-radius: 4px;
        margin-bottom: 10px;
        align-self: flex-start;
    }

    .content-card-title {
        font-size: 1.08rem;
        font-weight: 700;
        line-height: 1.45;
        margin-bottom: 8px;
        color: var(--color-text-on-light);
    }

    .content-card-summary {
        font-size: 0.92rem;
        line-height: 1.7;
        color: var(--color-text-secondary-light);
        margin-bottom: 14px;
        flex: 1;
    }

    .content-card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.8rem;
        color: var(--color-text-muted-dark);
        font-family: var(--font-mono);
        border-top: 1px solid var(--color-border-light);
        padding-top: 12px;
    }

    .content-card-meta .fa {
        margin-right: 4px;
    }

    .view-more-wrap {
        text-align: center;
        margin-top: 40px;
    }

    /* ===== Stats Section ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .stat-card {
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-light);
        padding: 28px 24px;
        text-align: center;
        transition: all var(--transition);
    }

    .stat-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 18px rgba(23,19,16,0.1);
    }

    .stat-icon {
        font-size: 1.6rem;
        color: var(--color-accent);
        margin-bottom: 12px;
    }

    .stat-number {
        font-family: var(--font-mono);
        font-size: 2rem;
        font-weight: 700;
        color: var(--color-text-on-light);
        line-height: 1.2;
        display: block;
    }

    .stat-number .stat-unit {
        font-size: 0.9rem;
        color: var(--color-accent);
        font-weight: 600;
    }

    .stat-label {
        font-size: 0.9rem;
        color: var(--color-text-secondary-light);
        margin-top: 6px;
    }

    /* ===== Topic Cards ===== */
    .topic-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .topic-card {
        border-radius: var(--radius-card);
        overflow: hidden;
        position: relative;
        min-height: 260px;
        display: flex;
        align-items: flex-end;
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
    }

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

    .topic-card-bg {
        position: absolute;
        inset: 0;
        background-size: cover;
        background-position: center;
    }

    .topic-card-bg::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(23,19,16,0.85) 0%, rgba(23,19,16,0.35) 50%, rgba(23,19,16,0.15) 100%);
    }

    .topic-card-content {
        position: relative;
        z-index: 1;
        padding: 24px 22px;
        color: var(--color-text-on-dark);
    }

    .topic-card-label {
        font-family: var(--font-mono);
        font-size: 0.72rem;
        letter-spacing: 0.1em;
        color: var(--color-accent);
        display: block;
        margin-bottom: 6px;
    }

    .topic-card-title {
        font-size: 1.25rem;
        font-weight: 700;
        line-height: 1.35;
        margin-bottom: 8px;
        color: var(--color-text-on-dark);
    }

    .topic-card-desc {
        font-size: 0.9rem;
        line-height: 1.65;
        color: var(--color-text-secondary-dark);
    }

    /* ===== Reviews ===== */
    .review-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 22px;
    }

    .review-card {
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-light);
        padding: 24px 22px;
        transition: all var(--transition);
    }

    .review-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 16px rgba(23,19,16,0.1);
    }

    .review-stars {
        color: var(--color-accent);
        font-size: 0.95rem;
        letter-spacing: 2px;
        margin-bottom: 12px;
    }

    .review-text {
        font-size: 0.95rem;
        line-height: 1.75;
        color: var(--color-text-secondary-light);
        margin-bottom: 16px;
    }

    .review-author {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .review-avatar {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--color-accent);
        color: #171310;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 0.9rem;
        flex-shrink: 0;
    }

    .review-name {
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--color-text-on-light);
    }

    .review-tag {
        font-size: 0.78rem;
        color: var(--color-text-muted-dark);
    }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 820px;
        margin: 0 auto;
    }

    .faq-item {
        background: var(--color-card-light);
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-light);
        margin-bottom: 12px;
        overflow: hidden;
        transition: all var(--transition);
    }

    .faq-item:hover {
        border-color: var(--color-accent);
    }

    .faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 18px 22px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        cursor: pointer;
        font-family: var(--font-sans);
        font-size: 1rem;
        font-weight: 600;
        color: var(--color-text-on-light);
        text-align: left;
        min-height: 48px;
        transition: background var(--transition);
    }

    .faq-question:hover {
        background: rgba(200,155,74,0.05);
    }

    .faq-question .fa {
        color: var(--color-accent);
        transition: transform var(--transition);
        flex-shrink: 0;
    }

    .faq-item.open .faq-question .fa {
        transform: rotate(180deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 400ms ease;
    }

    .faq-item.open .faq-answer {
        max-height: 400px;
    }

    .faq-answer-inner {
        padding: 0 22px 20px;
        font-size: 0.95rem;
        line-height: 1.8;
        color: var(--color-text-secondary-light);
        border-top: 1px solid var(--color-border-light);
        padding-top: 14px;
        margin: 0 22px 20px;
    }

    /* ===== CTA Band ===== */
    .cta-band {
        background: var(--color-primary);
        border-radius: var(--radius-card);
        padding: 48px 40px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 30px;
        flex-wrap: wrap;
        position: relative;
        overflow: hidden;
    }

    .cta-band::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 60%;
        height: 200%;
        background: url('/assets/images/19ca30c964cd1bc5.webp') center/cover no-repeat;
        opacity: 0.1;
        pointer-events: none;
    }

    .cta-band-content {
        position: relative;
        z-index: 1;
        flex: 1;
        min-width: 260px;
    }

    .cta-band-title {
        font-size: 1.7rem;
        font-weight: 700;
        color: var(--color-text-on-dark);
        margin-bottom: 10px;
    }

    .cta-band-desc {
        font-size: 1rem;
        line-height: 1.75;
        color: var(--color-text-secondary-dark);
        max-width: 480px;
    }

    .cta-band-actions {
        position: relative;
        z-index: 1;
        display: flex;
        gap: 14px;
        flex-shrink: 0;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--color-primary);
        color: var(--color-text-on-dark);
        padding: 56px 0 28px;
        margin-top: 0;
    }

    .footer-top {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 36px;
        border-bottom: 1px solid var(--color-border-dark);
    }

    .footer-brand h3 {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--color-text-on-dark);
        margin-bottom: 12px;
    }

    .footer-brand p {
        font-size: 0.92rem;
        line-height: 1.75;
        color: var(--color-text-secondary-dark);
        max-width: 320px;
    }

    .footer-col h4 {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--color-text-on-dark);
        margin-bottom: 14px;
        letter-spacing: 0.04em;
    }

    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .footer-col ul li {
        margin-bottom: 8px;
    }

    .footer-col ul a {
        color: var(--color-text-secondary-dark);
        font-size: 0.9rem;
        text-decoration: none;
        transition: color var(--transition);
    }

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

    .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding-top: 20px;
        gap: 16px;
        flex-wrap: wrap;
        font-size: 0.85rem;
        color: var(--color-text-muted-dark);
    }

    .footer-bottom p {
        margin: 0;
    }

    /* ===== Responsive ===== */
    @media (max-width: 1024px) {
        .content-grid {
            grid-template-columns: repeat(2, 1fr);
        }

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

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

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

        .header-channel-row {
            flex-wrap: wrap;
        }

        .channel-nav {
            gap: 18px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .channel-nav::-webkit-scrollbar {
            display: none;
        }
    }

    @media (max-width: 768px) {
        .category-hero-inner {
            flex-direction: column;
            align-items: flex-start;
        }

        .category-hero-stats {
            gap: 24px;
            flex-wrap: wrap;
        }

        .category-hero h1 {
            font-size: 1.8rem;
        }

        .section-title {
            font-size: 1.7rem;
        }

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

        .cta-band {
            padding: 32px 24px;
        }
    }

    @media (max-width: 640px) {
        .header-brand-row {
            padding: 10px 0;
        }

        .header-logo span:not(.logo-mark) {
            font-size: 1rem;
        }

        .header-login-link {
            display: none;
        }

        .header-actions .btn:not(.mobile-toggle) {
            display: none;
        }

        .header-channel-row {
            display: none;
        }

        .mobile-toggle {
            display: flex;
        }

        .mobile-drawer {
            display: block;
        }

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

        .stats-grid {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

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

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

        .footer-bottom {
            flex-direction: column;
            text-align: center;
            gap: 8px;
        }

        .cta-band {
            flex-direction: column;
            align-items: flex-start;
            padding: 28px 20px;
        }

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

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

        .category-hero {
            padding: 32px 0 28px;
        }

        .category-hero h1 {
            font-size: 1.5rem;
        }

        .category-hero-stats {
            gap: 16px;
        }

        .hero-stat-number {
            font-size: 1.4rem;
        }
    }

    @media (max-width: 480px) {
        .stats-grid {
            grid-template-columns: 1fr;
        }

        .stat-card {
            padding: 20px 16px;
        }

        .section-title {
            font-size: 1.45rem;
        }

        .content-card-title {
            font-size: 0.98rem;
        }
    }