/* roulang page: index */
:root {
            --bg-primary: #070D16;
            --bg-deep: #04090F;
            --bg-panel: rgba(18, 33, 50, 0.62);
            --brand-cyan: #25C7E8;
            --brand-cyan-light: #6DE4FF;
            --brand-cyan-dim: rgba(37, 199, 232, 0.16);
            --signal-amber: #FFB36B;
            --signal-orange: #F77B48;
            --text-primary: #E7F1FA;
            --text-body: rgba(213, 231, 248, 0.84);
            --text-muted: rgba(154, 184, 214, 0.7);
            --border-glass: rgba(150, 215, 255, 0.18);
            --border-bright: rgba(95, 210, 255, 0.4);
            --radius-card: 12px;
            --radius-large: 16px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-primary);
            background-image: radial-gradient(ellipse 80% 60% at 20% 0%, rgba(37, 199, 232, 0.1) 0%, transparent 60%), radial-gradient(ellipse 60% 40% at 85% 20%, rgba(247, 123, 72, 0.06) 0%, transparent 50%), radial-gradient(ellipse 70% 50% at 50% 100%, rgba(37, 199, 232, 0.05) 0%, transparent 60%);
            background-attachment: fixed;
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23noise)' opacity='0.03'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 1;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: var(--brand-cyan-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: transparent;
        }
        :focus-visible {
            outline: 2px solid var(--brand-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .container-custom {
            width: 100%;
            max-width: 1320px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .text-glow {
            text-shadow: 0 0 30px rgba(37, 199, 232, 0.3);
        }
        .gradient-text {
            background: linear-gradient(135deg, #6DE4FF 0%, #25C7E8 60%, #FFB36B 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .grid-pattern {
            background-image: linear-gradient(rgba(37, 199, 232, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(37, 199, 232, 0.05) 1px, transparent 1px);
            background-size: 40px 40px;
        }
        .glass-panel {
            background: linear-gradient(135deg, rgba(37, 199, 232, 0.09) 0%, rgba(18, 33, 50, 0.72) 45%, rgba(18, 33, 50, 0.52) 100%);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(150, 215, 255, 0.18);
            border-top: 1px solid rgba(150, 215, 255, 0.28);
            border-radius: 14px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(190, 230, 255, 0.08);
        }
        .card-base {
            background: linear-gradient(145deg, rgba(18, 33, 50, 0.72) 0%, rgba(10, 20, 32, 0.6) 100%);
            border: 1px solid rgba(150, 215, 255, 0.14);
            border-radius: var(--radius-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
        }
        .card-base:hover {
            border-color: rgba(37, 199, 232, 0.45);
            transform: translateY(-3px);
            box-shadow: 0 16px 44px rgba(0, 0, 0, 0.3), 0 0 20px rgba(37, 199, 232, 0.08);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #FFC98C 0%, #FFB36B 25%, #F77B48 100%);
            color: #04090F;
            font-weight: 700;
            font-size: 15px;
            min-height: 44px;
            padding: 0 26px;
            border-radius: 10px;
            position: relative;
            transition: all 0.3s ease;
            box-shadow: 0 2px 10px rgba(247, 123, 72, 0.25), 0 8px 32px rgba(247, 123, 72, 0.18), 0 0 0 1px rgba(255, 179, 107, 0.2);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 18px rgba(247, 123, 72, 0.4), 0 14px 44px rgba(247, 123, 72, 0.25), 0 0 32px rgba(255, 179, 107, 0.19);
            color: #04090F;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(247, 123, 72, 0.28);
            filter: saturate(0.85);
        }
        .btn-primary:disabled {
            opacity: 0.55;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
            filter: grayscale(0.4);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(37, 199, 232, 0.06);
            color: var(--brand-cyan-light);
            border: 1px solid rgba(95, 210, 255, 0.25);
            font-size: 15px;
            font-weight: 500;
            min-height: 44px;
            padding: 0 24px;
            border-radius: 10px;
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            border-color: rgba(37, 199, 232, 0.7);
            background: rgba(37, 199, 232, 0.12);
            box-shadow: 0 0 20px rgba(37, 199, 232, 0.12);
            color: var(--brand-cyan-light);
        }
        .btn-secondary:active {
            transform: scale(0.98);
            border-color: rgba(37, 199, 232, 0.5);
        }
        .badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            letter-spacing: 0.04em;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(37, 199, 232, 0.12);
            border: 1px solid rgba(37, 199, 232, 0.25);
            color: #9BE9FF;
            white-space: nowrap;
        }
        .badge-amber {
            background: rgba(255, 179, 107, 0.09);
            border: 1px solid rgba(255, 179, 107, 0.25);
            color: #FFCE9E;
        }
        .section-eyebrow {
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.35em;
            text-transform: uppercase;
            color: var(--signal-amber);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-eyebrow::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--signal-amber);
            box-shadow: 0 0 12px rgba(255, 179, 107, 0.4);
        }
        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.2rem);
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 560px;
            line-height: 1.7;
        }
        .status-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            margin-right: 6px;
            flex-shrink: 0;
        }
        .status-dot-green {
            background: #52D68A;
            box-shadow: 0 0 8px rgba(82, 214, 138, 0.5);
        }
        .status-dot-cyan {
            background: var(--brand-cyan);
            box-shadow: 0 0 8px rgba(37, 199, 232, 0.5);
        }
        .status-dot-amber {
            background: var(--signal-amber);
            box-shadow: 0 0 8px rgba(255, 179, 107, 0.4);
        }
        .divider-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(95, 210, 255, 0.234), transparent);
            border: none;
        }
        details.faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 16px;
            transition: color 0.3s;
            user-select: none;
        }
        details.faq-item summary::-webkit-details-marker {
            display: none;
        }
        details.faq-item summary:hover {
            color: var(--brand-cyan-light);
        }
        details.faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            border: 1px solid rgba(95, 210, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 300;
            transition: all 0.35s;
            color: var(--brand-cyan-light);
        }
        details.faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            border-color: var(--brand-cyan);
            background: rgba(37, 199, 232, 0.1);
            color: var(--brand-cyan-light);
        }
        details.faq-item .faq-content {
            padding: 0 24px 20px;
        }
        details.faq-item .faq-content p {
            color: var(--text-body);
            font-size: 15px;
            line-height: 1.8;
        }
        .table-scroll {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .compare-table {
            width: 100%;
            min-width: 780px;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: 14px;
            overflow: hidden;
            background: transparent;
        }
        .compare-table th,
        .compare-table td {
            padding: 18px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(95, 210, 255, 0.09);
            font-size: 15px;
        }
        .compare-table th {
            background: rgba(13, 25, 38, 0.8);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 13px;
            letter-spacing: 0.08em;
        }
        .compare-table td {
            background: rgba(10, 20, 32, 0.4);
            color: var(--text-body);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table tr:hover td {
            background: rgba(37, 199, 232, 0.05);
        }
        .compare-table .col-recommend {
            background: rgba(255, 179, 107, 0.05);
            box-shadow: inset 0 0 0 1px rgba(255, 179, 107, 0.28);
            border-radius: 0;
            position: relative;
        }
        .compare-table .col-recommend td {
            background: rgba(255, 179, 107, 0.05);
        }
        .recommend-corner {
            background: linear-gradient(90deg, #FFB36B, #F77B48);
            color: #04090F;
            font-size: 11px;
            font-weight: 800;
            letter-spacing: 0.1em;
            padding: 4px 14px;
            border-radius: 0 0 0 14px;
            display: inline-block;
            position: absolute;
            top: 0;
            right: 0;
            z-index: 2;
        }
        .nav-link-active {
            background: rgba(37, 199, 232, 0.08);
            border: 1px solid rgba(95, 210, 255, 0.3);
            border-radius: 999px;
            color: #9BE9FF !important;
        }
        .pulse-dot {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(82, 214, 138, 0.4);
            }
            50% {
                opacity: 0.85;
                box-shadow: 0 0 0 5px rgba(82, 214, 138, 0);
            }
        }
        .hero-term {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .term-line {
            flex: 1 1 100%;
        }
        .featured-nav-item {
            writing-mode: vertical-rl;
            text-orientation: mixed;
            letter-spacing: 0.2em;
            border: 1px solid rgba(95, 210, 255, 0.18);
            border-radius: 10px;
            padding: 14px 10px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            background: rgba(18, 33, 50, 0.4);
            transition: all 0.3s ease;
        }
        .featured-nav-item:hover {
            color: var(--brand-cyan-light);
            border-color: rgba(95, 210, 255, 0.5);
            background: rgba(37, 199, 232, 0.08);
            box-shadow: 0 0 20px rgba(37, 199, 232, 0.1);
        }
        #mobile-menu {
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
            transform: translateX(105%);
            opacity: 0;
            visibility: hidden;
        }
        #mobile-menu.open {
            transform: translateX(0);
            opacity: 1;
            visibility: visible;
        }
        .faq-item {
            background: rgba(16, 30, 46, 0.5);
            border: 1px solid rgba(150, 215, 255, 0.14);
            border-radius: 12px;
            margin-bottom: 12px;
            transition: border-color 0.3s, background 0.3s;
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(150, 215, 255, 0.3);
            background: rgba(18, 33, 50, 0.68);
        }
        .footnote {
            position: fixed;
            bottom: 16px;
            right: 16px;
            z-index: 60;
            font-size: 10px;
            color: rgba(154, 184, 214, 0.3);
            pointer-events: none;
        }
        .noise-overlay {
            position: relative;
        }
        .noise-overlay::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: inherit;
            pointer-events: none;
        }
        @media (max-width: 1024px) {
            .nav-large {
                display: none;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (min-width: 1025px) {
            .nav-hamburger {
                display: none;
            }
        }
        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }
            .hero-panel {
                margin-top: 24px;
            }
            .compare-table th,
            .compare-table td {
                padding: 14px 12px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .box-text {
                padding: 16px 12px;
            }
            .container-custom {
                padding-left: 14px;
                padding-right: 14px;
            }
            details.faq-item summary {
                padding: 14px 14px;
                font-size: 15px;
            }
            details.faq-item .faq-content {
                padding: 0 14px 14px;
            }
        }
        @media print {
            body {
                background: #fff;
                color: #222;
            }
            .no-print {
                display: none;
            }
            .glass-panel,
            .card-base {
                background: #fff;
                border: 1px solid #ccc;
                box-shadow: none;
            }
        }

#site-header.scrolled {
            background: rgba(4, 9, 15, 0.92);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
        }
        #mobile-menu {
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, visibility 0.3s;
            transform: translateX(105%);
            opacity: 0;
            visibility: hidden;
        }
        #mobile-menu.open {
            transform: translateX(0);
            opacity: 1;
            visibility: visible;
        }
        #menu-overlay.open {
            display: block;
        }
        @media (min-width: 1024px) {
            #mobile-menu,
            #menu-overlay {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
    --bg: #070D16;
    --bg-deep: #04090F;
    --panel: rgba(18, 33, 50, 0.66);
    --panel-strong: rgba(10, 18, 28, 0.82);
    --line: rgba(150, 215, 255, 0.18);
    --line-bright: rgba(95, 210, 255, 0.42);
    --brand-cyan: #25C7E8;
    --brand-cyan-light: #6DE4FF;
    --accent-amber: #FFB36B;
    --accent-amber-deep: #F77B48;
    --text-hi: #E7F1FA;
    --text-body: rgba(213, 231, 248, 0.84);
    --text-dim: rgba(154, 184, 214, 0.7);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 10px;
    --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.26);
}

html, body {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
    color: var(--text-body);
    background-color: var(--bg);
    background-image: radial-gradient(circle at 12% 8%, rgba(37, 199, 232, 0.06), transparent 28%),
                      radial-gradient(circle at 86% 20%, rgba(247, 123, 72, 0.045), transparent 24%),
                      linear-gradient(135deg, #0A1420 0%, #070D16 42%, #06070B 100%);
    background-attachment: fixed;
    line-height: 1.7;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.5'/%3E%3C/svg%3E");
    opacity: 0.035;
}

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

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

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

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

button {
    cursor: pointer;
}

.container-custom {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

@media (min-width: 640px) {
    .container-custom {
        padding-left: 28px;
        padding-right: 28px;
    }
}

@media (min-width: 1200px) {
    .container-custom {
        padding-left: 32px;
        padding-right: 32px;
    }
}

.site-header {
    background: rgba(7, 13, 22, 0.76);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(150, 215, 255, 0.1);
    transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.site-header.scrolled {
    background: rgba(4, 9, 15, 0.9);
    border-bottom-color: rgba(95, 210, 255, 0.16);
    box-shadow: 0 11px 30px rgba(0, 0, 0, 0.2);
}

.nav-area {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 4px;
    font-size: 15px;
    font-weight: 500;
    color: rgba(213, 231, 248, 0.72);
    border-radius: 999px;
    transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-link:hover {
    color: #E7F1FA;
    background: rgba(37, 199, 232, 0.06);
}

.nav-link.active {
    color: #E7F1FA;
    background: rgba(37, 199, 232, 0.1);
    box-shadow: inset 0 0 0 1px rgba(95, 210, 255, 0.28);
}

.logo-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    line-height: 1.15;
    text-align: center;
    padding: 8px 14px;
}

.logo-badge strong {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: #E7F1FA;
    white-space: nowrap;
}

.logo-badge span {
    font-size: 10px;
    letter-spacing: 0.42em;
    text-indent: 0.42em;
    color: var(--brand-cyan);
    margin-top: 5px;
    white-space: nowrap;
    text-transform: uppercase;
}

.btn-primary,
.btn-secondary,
.btn-focus,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 24px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    text-align: center;
    border: 1px solid transparent;
    outline: none;
    transition: all 0.22s ease;
    text-decoration: none;
    position: relative;
}

.btn-primary {
    color: #120D08;
    background: linear-gradient(135deg, #FFC284 0%, #FFB36B 34%, #F77B48 100%);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 18px rgba(247, 123, 72, 0.2), 0 8px 24px rgba(247, 123, 72, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #FFD19D 0%, #FFC284 34%, #F77B48 100%);
    box-shadow: 0 0 27px rgba(247, 123, 72, 0.36), 0 12px 30px rgba(32, 15, 8, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 0 12px rgba(247, 123, 72, 0.22), 0 4px 12px rgba(32, 15, 8, 0.2);
}

.btn-primary:focus-visible {
    outline: 3px solid rgba(255, 179, 107, 0.35);
    outline-offset: 3px;
}

.btn-secondary {
    color: #DDF5FF;
    background: rgba(37, 199, 232, 0.05);
    border-color: rgba(95, 210, 255, 0.4);
    box-shadow: 0 0 10px rgba(37, 199, 232, 0.06);
}

.btn-secondary:hover {
    color: #F3FBFF;
    border-color: rgba(109, 228, 255, 0.65);
    background: rgba(37, 199, 232, 0.1);
    box-shadow: 0 0 18px rgba(37, 199, 232, 0.14);
    transform: translateY(-1px);
}

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

.btn-secondary:focus-visible {
    outline: 3px solid rgba(37, 199, 232, 0.3);
    outline-offset: 3px;
}

.btn-focus {
    color: #07141F;
    background: var(--brand-cyan);
    border-color: rgba(200, 245, 255, 0.22);
    box-shadow: 0 0 20px rgba(37, 199, 232, 0.22);
}

.btn-focus:hover {
    background: var(--brand-cyan-light);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(37, 199, 232, 0.3);
}

.btn-focus:focus-visible {
    outline: 3px solid rgba(37, 199, 232, 0.45);
    outline-offset: 3px;
}

.btn-ghost {
    color: rgba(213, 231, 248, 0.8);
    background: transparent;
    border-color: rgba(150, 215, 255, 0.14);
}

.btn-ghost:hover {
    border-color: rgba(150, 215, 255, 0.34);
    background: rgba(18, 33, 50, 0.42);
    color: #fff;
}

.btn-ghost:active {
    background: rgba(18, 33, 50, 0.6);
}

.btn-ghost:focus-visible {
    outline: 3px solid rgba(95, 210, 255, 0.22);
    outline-offset: 2px;
}

.btn-lg {
    min-height: 54px;
    padding: 0 34px;
    font-size: 16px;
}

.btn-sm {
    min-height: 38px;
    padding: 0 17px;
    font-size: 13px;
}

.mobile-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(86%, 356px);
    z-index: 70;
    background: rgba(6, 10, 16, 0.96);
    backdrop-filter: blur(22px);
    border-left: 1px solid rgba(109, 228, 255, 0.12);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s ease;
}

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

.mobile-panel-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(3, 7, 12, 0.56);
    backdrop-filter: blur(3px);
    z-index: 60;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

.mobile-panel-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    letter-spacing: 0.34em;
    text-transform: uppercase;
    font-weight: 700;
    color: #FFB36B;
    margin-bottom: 18px;
}

.eyebrow::before {
    content: "";
    width: 28px;
    height: 1px;
    background: currentColor;
    opacity: 0.52;
}

.eyebrow.cyan {
    color: #6DE4FF;
}

.eyebrow.white {
    color: rgba(231, 241, 250, 0.82);
}

.section-title {
    color: #E7F1FA;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.22;
    margin: 0;
}

.section-sub {
    margin-top: 14px;
    font-size: 15px;
    line-height: 1.78;
    color: rgba(154, 184, 214, 0.72);
    max-width: 680px;
}

.glass-card {
    background: rgba(18, 33, 50, 0.62);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(150, 215, 255, 0.16);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    position: relative;
}

.glass-card::before {
    content: "";
    position: absolute;
    left: 1px;
    top: 1px;
    right: 1px;
    height: 60px;
    border-radius: 16px 16px 0 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 70%);
}

.light-card {
    background: rgba(7, 17, 27, 0.72);
    border: 1px solid rgba(150, 215, 255, 0.13);
    border-radius: 14px;
}

.content-card {
    background: rgba(7, 16, 24, 0.7);
    border: 1px solid rgba(150, 215, 255, 0.12);
    border-radius: 12px;
    transition: border-color 0.22s ease, background 0.22s ease, transform 0.24s ease, box-shadow 0.24s ease;
}

.content-card:hover {
    border-color: rgba(37, 199, 232, 0.5);
    background: rgba(14, 28, 40, 0.72);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.hl-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border-radius: 999px;
    border: 1px solid rgba(37, 199, 232, 0.25);
    background: rgba(37, 199, 232, 0.08);
    color: #83E5FA;
    font-size: 12px;
    white-space: nowrap;
}

.amber-tag {
    border-color: rgba(255, 179, 107, 0.22);
    background: rgba(255, 179, 107, 0.08);
    color: #FFD1A5;
}

.grid-bg {
    background-image:
        linear-gradient(rgba(95, 210, 255, 0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(95, 210, 255, 0.045) 1px, transparent 1px);
    background-size: 44px 44px;
}

.hero-img-overlay {
    background: linear-gradient(120deg, rgba(6, 10, 15, 0.38) 0%, rgba(6, 10, 15, 0.82) 100%);
}

.faq-card {
    border: 1px solid rgba(150, 215, 255, 0.16);
    border-radius: 16px;
    background: rgba(12, 24, 35, 0.6);
    overflow: hidden;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.faq-card[open] {
    border-color: rgba(95, 210, 255, 0.42);
    background: rgba(12, 24, 35, 0.72);
}

.faq-card summary {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    color: #E7F1FA;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    padding: 22px 24px;
}

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

.faq-icon {
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 199, 232, 0.08);
    color: var(--brand-cyan);
    font-size: 18px;
    font-weight: 600;
    border: 1px solid rgba(37, 199, 232, 0.3);
    transition: transform 0.25s ease, background 0.25s ease;
}

.faq-card[open] .faq-icon {
    transform: rotate(45deg);
    background: rgba(37, 199, 232, 0.16);
}

.faq-card .faq-answer {
    padding: 0 24px 22px 66px;
    color: rgba(213, 231, 248, 0.88);
    font-size: 15px;
    line-height: 1.85;
}

.hero-main-title {
    color: #f2f7fc;
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.02em;
    text-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
    margin-bottom: 24px;
}

.cta-line {
    background: linear-gradient(90deg, rgba(37,199,232,0.16), transparent 60%);
    border-top: 1px solid rgba(37, 199, 232, 0.12);
    border-bottom: 1px solid rgba(150, 215, 255, 0.05);
}

.step-list {
    counter-reset: step;
    position: relative;
    margin: 0;
    padding: 0;
    list-style: none;
}

.step-list li {
    counter-increment: step;
    display: flex;
    gap: 20px;
    position: relative;
    padding-bottom: 28px;
}

.step-list li::before {
    content: "";
    position: absolute;
    left: 25px;
    top: 58px;
    bottom: 2px;
    width: 1px;
    background: linear-gradient(to bottom, rgba(95, 210, 255, 0.32), rgba(95, 210, 255, 0.03));
}

.step-list li:last-child::before {
    display: none;
}

.step-index {
    position: relative;
    z-index: 1;
    width: 52px;
    height: 52px;
    flex: 0 0 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    font-size: 18px;
    font-weight: 700;
    color: #E7F1FA;
    background: rgba(18, 33, 50, 0.72);
    border: 1px solid rgba(95, 210, 255, 0.32);
    box-shadow: 0 0 14px rgba(37, 199, 232, 0.1);
}

.vert-menu-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 15px;
    border-radius: 12px;
    border: 1px solid rgba(150, 215, 255, 0.12);
    background: rgba(10, 24, 37, 0.4);
    transition: all 0.22s ease;
}

.vert-menu-item:hover {
    border-color: rgba(95, 210, 255, 0.42);
    background: rgba(14, 32, 48, 0.64);
    transform: translateX(-3px);
}

.icon-box {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 9px;
    background: rgba(37, 199, 232, 0.12);
    color: var(--brand-cyan);
}

.ver-line {
    display: block;
    width: 1px;
    height: 90%;
    background: linear-gradient(180deg, rgba(37, 199, 232, 0.42), transparent);
}

footer a {
    transition: all 0.2s ease;
}

footer a:hover {
    color: #E7F1FA;
}

.footer-topline-item:hover {
    color: #fff;
}

@media (max-width: 1023px) {
    .nav-area.desktop-nav-left {
        display: none;
    }
    .nav-area.desktop-nav-right {
        display: none;
    }
}

@media (min-width: 1024px) {
    .header-mobile-main {
        display: none;
    }
}

@media (max-width: 767px) {
    .faq-card summary {
        font-size: 15px;
        padding: 18px 16px;
    }
    .faq-card .faq-answer {
        padding: 0 16px 18px 50px;
        font-size: 14px;
    }
    .faq-icon {
        width: 24px;
        height: 24px;
        flex-basis: 24px;
        font-size: 15px;
    }
    .hero-main-title {
        font-size: 34px;
    }
    .btn-primary, .btn-secondary, .btn-focus {
        padding: 0 18px;
    }
    .section-outer {
        padding-top: 72px;
        padding-bottom: 72px;
    }
}

.section-outer {
    padding-top: 104px;
    padding-bottom: 104px;
}

::selection {
    background: rgba(37, 199, 232, 0.28);
    color: #fff;
}

:focus-visible {
    outline: 2px solid rgba(37, 199, 232, 0.5);
    outline-offset: 3px;
}

@media print {
    .site-header, .mobile-panel, .mobile-panel-backdrop, .faq-cta, .footer-cta, .no-print {
        display: none !important;
    }
    body {
        background: #fff !important;
        color: #111 !important;
    }
}

/* roulang page: article */
:root {
            --bg-deep: #070D16;
            --bg-footer: #04090F;
            --panel: rgba(18, 33, 50, 0.62);
            --brand-cyan: #25C7E8;
            --brand-cyan-light: #6DE4FF;
            --brand-amber: #FFB36B;
            --brand-amber-deep: #F77B48;
            --text-main: #E7F1FA;
            --text-muted: rgba(213, 231, 248, 0.84);
            --text-dim: rgba(154, 184, 214, 0.72);
            --line: rgba(150, 215, 255, 0.18);
            --line-strong: rgba(95, 210, 255, 0.42);
            --radius: 18px;
            --shadow-card: 0 18px 60px rgba(0, 0, 0, 0.28);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            color: var(--text-main);
            line-height: 1.7;
            background:
                radial-gradient(circle at 78% 8%, rgba(37, 199, 232, 0.08), transparent 24rem),
                radial-gradient(circle at 15% 82%, rgba(255, 179, 107, 0.05), transparent 20rem),
                var(--bg-deep);
            -webkit-font-smoothing: antialiased;
        }

        body::after {
            content: "";
            position: fixed;
            inset: 0;
            z-index: 9998;
            pointer-events: none;
            opacity: 0.035;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(/%23n)' opacity='0.5'/%3E%3C/svg%3E");
        }

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

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

        button,
        input,
        summary {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid var(--brand-cyan-light);
            outline-offset: 3px;
            border-radius: 10px;
        }

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

        @media (min-width: 768px) {
            .container-custom {
                padding-left: 28px;
                padding-right: 28px;
            }
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(5, 11, 18, 0.68);
            border-bottom: 1px solid transparent;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(3, 8, 14, 0.84);
            border-bottom-color: rgba(150, 215, 255, 0.1);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
        }

        .nav-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
            align-items: center;
            height: 84px;
            gap: 20px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 40px;
            padding: 8px 14px;
            margin: 0 2px;
            font-size: 14.5px;
            line-height: 1.4;
            color: rgba(213, 231, 248, 0.82);
            border-radius: 10px;
            border: 1px solid transparent;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(37, 199, 232, 0.07);
            border-color: rgba(95, 210, 255, 0.14);
        }

        .nav-logo {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            align-items: flex-start;
            text-align: left;
            padding: 8px 14px;
            border-radius: 14px;
            transition: background 0.2s ease;
        }

        .nav-logo:hover {
            background: rgba(37, 199, 232, 0.06);
        }

        .nav-logo-main {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: 0.01em;
            color: #f2faff;
        }

        .nav-logo-sub {
            font-size: 11px;
            letter-spacing: 0.52em;
            color: var(--brand-cyan);
            margin-top: 3px;
            line-height: 1.4;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 10px 20px;
            border-radius: 12px;
            background: linear-gradient(135deg, #FFC07A 0%, #FFB36B 45%, #F77B48 100%);
            color: #0c1722;
            font-size: 15px;
            font-weight: 700;
            border: none;
            box-shadow: 0 0 0 1px rgba(255, 179, 107, 0.18), 0 8px 24px rgba(247, 123, 72, 0.2), 0 0 26px rgba(255, 179, 107, 0.08);
            transition: transform 0.2s ease, box-shadow 0.25s ease, filter 0.2s ease;
        }

        .nav-cta:hover {
            transform: translateY(-1px);
            filter: brightness(1.04);
            box-shadow: 0 0 0 1px rgba(255, 179, 107, 0.3), 0 12px 28px rgba(247, 123, 72, 0.26), 0 0 42px rgba(255, 179, 107, 0.15);
        }

        .nav-cta:active {
            transform: translateY(1px) scale(0.98);
            filter: saturate(0.95);
        }

        .logo-badge-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 99px;
            margin-right: 8px;
            background: var(--brand-amber);
            box-shadow: 0 0 0 4px rgba(255, 179, 107, 0.08), 0 0 14px rgba(255, 179, 107, 0.3);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 12px 24px;
            border-radius: 13px;
            background: linear-gradient(135deg, #FFC07A, #FFB36B 45%, #F77B48);
            color: #0c1722;
            font-size: 15px;
            font-weight: 700;
            line-height: 1.2;
            border: none;
            box-shadow: 0 0 0 1px rgba(255, 179, 107, 0.18), 0 10px 32px rgba(247, 123, 72, 0.22), 0 0 36px rgba(255, 179, 107, 0.08);
            transition: transform 0.2s ease, box-shadow 0.25s ease, filter 0.2s ease;
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 0 0 1px rgba(255, 179, 107, 0.36), 0 14px 36px rgba(247, 123, 72, 0.28), 0 0 54px rgba(255, 179, 107, 0.14);
        }

        .btn-primary:active {
            transform: translateY(1px) scale(0.98);
            box-shadow: 0 0 0 1px rgba(255, 179, 107, 0.2), 0 8px 20px rgba(247, 123, 72, 0.2);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 50px;
            padding: 12px 24px;
            border-radius: 13px;
            color: #dcefff;
            background: rgba(37, 199, 232, 0.04);
            border: 1px solid rgba(95, 210, 255, 0.22);
            font-size: 15px;
            font-weight: 600;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
        }

        .btn-outline:hover {
            background: rgba(37, 199, 232, 0.09);
            border-color: rgba(95, 210, 255, 0.5);
            box-shadow: 0 0 0 3px rgba(37, 199, 232, 0.05), 0 0 28px rgba(37, 199, 232, 0.08);
        }

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

        .mobile-trigger {
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            border: 1px solid rgba(150, 215, 255, 0.14);
            background: rgba(18, 33, 50, 0.5);
            cursor: pointer;
        }

        .mobile-trigger span {
            display: block;
            width: 20px;
            height: 1.5px;
            background: #dbeaf8;
            margin: 3px auto;
            border-radius: 4px;
            transition: background 0.2s ease;
        }

        .mobile-trigger:hover span {
            background: var(--brand-cyan-light);
        }

        #mobileDrawer {
            position: fixed;
            top: 0;
            right: 0;
            width: min(86vw, 380px);
            height: 100dvh;
            z-index: 200;
            transform: translateX(100%);
            background: linear-gradient(155deg, rgba(10, 19, 30, 0.98) 0%, rgba(5, 12, 20, 0.99) 100%);
            border-left: 1px solid rgba(150, 215, 255, 0.14);
            box-shadow: -20px 0 60px rgba(0, 0, 0, 0.4);
            transition: transform 0.35s ease;
            overflow-y: auto;
        }

        #mobileDrawer.open {
            transform: translateX(0);
        }

        .drawer-backdrop {
            position: fixed;
            inset: 0;
            z-index: 150;
            pointer-events: none;
            background: rgba(2, 5, 9, 0.2);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .drawer-backdrop.show {
            opacity: 1;
            pointer-events: auto;
        }

        body.drawer-open {
            overflow: hidden;
        }

        .article-hero {
            position: relative;
            overflow: hidden;
            background-color: #0A1522;
            background-image:
                linear-gradient(180deg, rgba(4, 9, 15, 0.72) 0%, rgba(4, 9, 15, 0.64) 40%, rgba(7, 13, 22, 0.92) 100%),
                radial-gradient(circle at 18% 28%, rgba(37, 199, 232, 0.16), transparent 22rem),
                radial-gradient(circle at 80% 18%, rgba(255, 179, 107, 0.12), transparent 18rem),
                linear-gradient(rgba(150, 215, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(150, 215, 255, 0.035) 1px, transparent 1px),
                url("/assets/images/backpic/back-3.webp");
            background-size: auto, auto, auto, 38px 38px, 38px 38px, cover;
            background-position: center;
        }

        .article-hero-content {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-item {
            display: inline-flex;
            align-items: center;
            font-size: 13px;
            color: rgba(154, 184, 214, 0.68);
            transition: color 0.25s ease;
        }

        .breadcrumb-item:hover {
            color: var(--brand-cyan-light);
        }

        .badge-cyan {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 7px 14px;
            border-radius: 99px;
            font-size: 12.5px;
            font-weight: 600;
            color: #dcf4ff;
            background: rgba(37, 199, 232, 0.1);
            border: 1px solid rgba(95, 210, 255, 0.2);
        }

        .badge-amber {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 7px 14px;
            border-radius: 99px;
            font-size: 12.5px;
            font-weight: 600;
            color: #ffe6c8;
            background: rgba(255, 179, 107, 0.08);
            border: 1px solid rgba(255, 179, 107, 0.2);
        }

        .page-dots {
            display: inline-flex;
            gap: 5px;
            margin-left: 10px;
        }

        .page-dots i {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: rgba(150, 215, 255, 0.3);
        }

        .article-title {
            font-size: clamp(1.8rem, 3.4vw, 2.9rem);
            line-height: 1.24;
            font-weight: 700;
            letter-spacing: -0.015em;
            color: #f2fbff;
            max-width: 880px;
            margin: 14px 0 0;
        }

        .article-subline {
            max-width: 760px;
            font-size: 15.5px;
            line-height: 1.8;
            color: rgba(213, 231, 248, 0.74);
            margin-top: 16px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 16px;
            color: rgba(154, 184, 214, 0.78);
            font-size: 13.5px;
        }

        .meta-divider {
            width: 1px;
            height: 13px;
            background: rgba(150, 215, 255, 0.2);
        }

        .article-panel {
            border-radius: 20px;
            background: rgba(10, 19, 30, 0.84);
            border: 1px solid rgba(150, 215, 255, 0.12);
            box-shadow: 0 18px 70px rgba(0, 0, 0, 0.32);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .article-body {
            font-size: 1.0625rem;
            color: rgba(231, 241, 250, 0.94);
            line-height: 1.9;
            word-break: break-word;
        }

        .article-body > * {
            margin-bottom: 1.6em;
        }

        .article-body > h2,
        .article-body > h3,
        .article-body > h4 {
            margin-top: 2.2em;
            margin-bottom: 0.9em;
            line-height: 1.5;
            color: #f0f8ff;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .article-body > h2 {
            font-size: 1.55rem;
            border-left: 3px solid var(--brand-cyan);
            padding-left: 16px;
        }

        .article-body > h3 {
            font-size: 1.2rem;
        }

        .article-body > p {
            text-align: justify;
            font-size: 1.06rem;
        }

        .article-body > ul {
            padding-left: 1.35rem;
            margin-top: 1.2em;
        }

        .article-body > ul li {
            list-style: none;
            position: relative;
            padding-left: 1.15rem;
            margin-bottom: 0.8em;
            color: rgba(226, 240, 252, 0.9);
        }

        .article-body > ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.72em;
            width: 7px;
            height: 7px;
            border-radius: 2px;
            background: var(--brand-cyan);
            box-shadow: 0 0 12px rgba(37, 199, 232, 0.6);
        }

        .article-body > blockquote {
            margin: 2em 0;
            padding: 22px 24px;
            border-radius: 16px;
            border-left: 3px solid var(--brand-amber);
            background: rgba(255, 179, 107, 0.05);
            color: rgba(238, 226, 207, 0.92);
            font-size: 1rem;
        }

        .article-body img {
            border-radius: 16px;
            margin: 2.2em auto;
            box-shadow: 0 14px 50px rgba(0, 0, 0, 0.3);
        }

        .article-body a {
            color: var(--brand-cyan-light);
            border-bottom: 1px solid rgba(95, 210, 255, 0.25);
        }

        .article-body a:hover {
            color: #9df1ff;
            border-bottom-color: var(--brand-cyan-light);
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            min-height: 32px;
            padding: 5px 13px;
            border-radius: 999px;
            font-size: 12.5px;
            color: rgba(213, 231, 248, 0.82);
            background: rgba(150, 215, 255, 0.06);
            border: 1px solid rgba(150, 215, 255, 0.12);
            transition: border-color 0.2s ease, color 0.2s ease;
        }

        .tag-chip:hover {
            border-color: rgba(95, 210, 255, 0.38);
            color: #fff;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            overflow: hidden;
            border-radius: 18px;
            background: rgba(10, 19, 30, 0.68);
            border: 1px solid rgba(150, 215, 255, 0.1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
            transition: transform 0.25s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
        }

        .related-card:hover {
            transform: translateY(-3px);
            border-color: rgba(95, 210, 255, 0.28);
            box-shadow: 0 18px 55px rgba(0, 0, 0, 0.26), 0 0 30px rgba(37, 199, 232, 0.06);
            background: rgba(12, 24, 38, 0.78);
        }

        .related-thumb {
            position: relative;
            display: block;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(37, 199, 232, 0.2) 0%, rgba(255, 179, 107, 0.16) 50%, rgba(18, 33, 50, 0.7) 100%);
        }

        .related-thumb img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
            transition: transform 0.5s ease, opacity 0.3s ease;
        }

        .related-card:hover .related-thumb img {
            transform: scale(1.045);
        }

        .related-content {
            display: flex;
            flex: 1;
            flex-direction: column;
            padding: 22px 20px;
        }

        .section-title {
            font-size: clamp(1.5rem, 2.8vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            color: #f0f8fe;
            margin: 0;
            letter-spacing: -0.01em;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.2em;
            color: var(--brand-cyan);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-desc {
            color: rgba(154, 184, 214, 0.84);
            font-size: 15px;
            max-width: 640px;
            line-height: 1.7;
        }

        .faq-item {
            background: rgba(10, 19, 30, 0.62);
            border: 1px solid rgba(150, 215, 255, 0.12);
            border-radius: 16px;
            padding: 22px 24px;
            margin-bottom: 14px;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(95, 210, 255, 0.2);
        }

        .faq-item[open] {
            border-color: rgba(95, 210, 255, 0.28);
            background: rgba(14, 28, 44, 0.76);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            cursor: pointer;
            list-style: none;
            font-size: 16px;
            font-weight: 600;
            color: #edf7ff;
            line-height: 1.5;
            min-height: 30px;
            user-select: none;
        }

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

        .faq-item summary::after {
            content: "+";
            flex: 0 0 28px;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(37, 199, 232, 0.08);
            border: 1px solid rgba(95, 210, 255, 0.18);
            color: var(--brand-cyan);
            font-size: 18px;
            font-weight: 400;
            line-height: 1;
            transition: transform 0.28s ease, background 0.25s ease, border-color 0.25s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
            background: rgba(255, 179, 107, 0.12);
            border-color: rgba(255, 179, 107, 0.26);
            color: var(--brand-amber);
        }

        .faq-answer {
            color: rgba(190, 214, 234, 0.84);
            font-size: 15px;
            line-height: 1.85;
            padding: 4px 36px 8px 0;
        }

        .faq-answer p {
            margin: 0;
        }

        .cta-section {
            position: relative;
            overflow: hidden;
            border-radius: 28px;
            background:
                radial-gradient(circle at 16% 30%, rgba(37, 199, 232, 0.14), transparent 12rem),
                radial-gradient(circle at 82% 62%, rgba(255, 179, 107, 0.13), transparent 14rem),
                rgba(9, 18, 29, 0.94);
            border: 1px solid rgba(150, 215, 255, 0.16);
            box-shadow: 0 20px 80px rgba(0, 0, 0, 0.3);
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(150, 215, 255, 0.045) 1px, transparent 1px),
                linear-gradient(90deg, rgba(150, 215, 255, 0.04) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }

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

        .empty-card {
            border-radius: 24px;
            padding: 52px 28px;
            text-align: center;
            background: rgba(10, 19, 30, 0.72);
            border: 1px solid rgba(150, 215, 255, 0.1);
            box-shadow: 0 18px 70px rgba(0, 0, 0, 0.2);
        }

        .empty-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            margin: 0 auto 20px;
            border-radius: 22px;
            background: rgba(37, 199, 232, 0.08);
            border: 1px solid rgba(95, 210, 255, 0.16);
            box-shadow: 0 0 0 12px rgba(37, 199, 232, 0.02);
        }

        .post-end-border {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(95, 210, 255, 0.3), transparent);
        }

        .footer {
            background: rgba(2, 6, 10, 0.9);
            border-top: 1px solid rgba(37, 199, 232, 0.1);
        }

        .footer-top-line {
            background: linear-gradient(90deg, transparent 0%, rgba(37, 199, 232, 0.45) 20%, rgba(255, 179, 107, 0.5) 50%, rgba(37, 199, 232, 0.45) 80%, transparent 100%);
            height: 1px;
        }

        .footer-link {
            font-size: 14px;
            color: rgba(154, 184, 214, 0.56);
            display: inline-block;
            transition: color 0.2s ease, opacity 0.2s ease;
        }

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

        .footer-badge {
            display: inline-flex;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 12px;
            color: rgba(154, 184, 214, 0.7);
            transition: all 0.25s ease;
        }

        .footer-badge:hover {
            color: #fff;
            border-color: rgba(95, 210, 255, 0.4);
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: rgba(231, 241, 250, 0.9);
            margin-bottom: 16px;
        }

        .copyright-line {
            border-top: 1px solid rgba(150, 215, 255, 0.08);
        }

        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-top {
                display: flex;
                min-height: 68px;
                align-items: center;
                justify-content: space-between;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (min-width: 1024px) {
            .mobile-top,
            .mobile-only {
                display: none !important;
            }
        }

        @media (max-width: 640px) {
            .article-title {
                font-size: 1.65rem;
            }
            .article-body {
                font-size: 1rem;
                line-height: 1.85;
            }
            .article-subline {
                font-size: 14.5px;
            }
            .faq-answer {
                padding-right: 0;
            }
        }

        @media print {
            header,
            .no-print,
            .cta-section,
            footer {
                display: none !important;
            }
            body {
                background: #fff;
                color: #111;
            }
            .article-panel {
                box-shadow: none;
                border: none;
                background: #fff;
            }
        }

/* roulang page: category3 */
:root {
            --bg-deep: #070D16;
            --bg-footer: #04090F;
            --brand-cyan: #25C7E8;
            --brand-cyan-light: #6DE4FF;
            --accent: #FFB36B;
            --accent-deep: #F77B48;
            --text-hi: #E7F1FA;
            --text-regular: rgba(213, 231, 248, .84);
            --text-dim: rgba(154, 184, 214, .7);
            --glass-bg: rgba(18, 33, 50, .62);
            --glass-border: rgba(150, 215, 255, .18);
            --bright-border: rgba(95, 210, 255, .4);
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --shadow-panel: 0 24px 70px rgba(0, 0, 0, .32);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background:
                radial-gradient(900px 480px at 82% -8%, rgba(37, 199, 232, .14), transparent 62%),
                radial-gradient(720px 340px at 8% 22%, rgba(247, 123, 72, .06), transparent 60%),
                linear-gradient(180deg, #0A1422 0%, var(--bg-deep) 48%, #060C13 100%);
            background-color: var(--bg-deep);
            color: var(--text-regular);
            line-height: 1.7;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        body::after {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            z-index: 9998;
            opacity: .036;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.95' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='.7'/%3E%3C/svg%3E");
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        summary {
            font: inherit;
        }
        svg {
            flex-shrink: 0;
        }

        .container-custom {
            width: 100%;
            max-width: 1320px;
            margin-left: auto;
            margin-right: auto;
            padding-left: clamp(16px, 4vw, 28px);
            padding-right: clamp(16px, 4vw, 28px);
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 60;
            background: rgba(7, 13, 22, .78);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(150, 215, 255, .1);
            transition: background .3s ease, border-color .3s ease;
        }
        .site-header:hover {
            border-bottom-color: rgba(95, 210, 255, .18);
        }
        .header-inner {
            height: 76px;
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
        }
        .header-logo {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            line-height: 1.25;
            padding: 6px 10px;
            border-radius: 10px;
            transition: background .2s ease;
        }
        .header-logo .logo-main {
            color: #F2F8FC;
            font-size: 19px;
            font-weight: 700;
            letter-spacing: .02em;
        }
        .header-logo .logo-sub {
            color: var(--brand-cyan);
            font-size: 10px;
            letter-spacing: .46em;
            text-indent: .46em;
            margin-top: 3px;
        }
        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 40px;
            padding: 0 9px;
            color: rgba(213, 231, 248, .75);
            font-size: 14px;
            border-radius: 10px;
            transition: color .2s ease, background .2s ease, border-color .2s ease;
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--brand-cyan), rgba(37, 199, 232, .1));
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .25s ease;
        }
        .nav-link:hover,
        .nav-link:focus-visible {
            color: var(--text-hi);
            background: rgba(37, 199, 232, .08);
        }
        .nav-link:hover::after,
        .nav-link:focus-visible::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--brand-cyan-light);
            background: rgba(37, 199, 232, .12);
            border: 1px solid rgba(95, 210, 255, .24);
        }
        .nav-link.active::after {
            transform: scaleX(1);
            background: var(--brand-cyan-light);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 42px;
            border-radius: 12px;
            padding: 0 20px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, opacity .22s ease;
        }
        .btn-primary {
            background: linear-gradient(135deg, #FFC37E 0%, #FFB36B 42%, #F77B48 100%);
            color: #17130D;
            border-color: rgba(255, 179, 107, .45);
            box-shadow:
                0 10px 32px rgba(247, 123, 72, .24),
                0 0 0 1px rgba(255, 179, 107, .1) inset,
                0 0 24px rgba(255, 179, 107, .07);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow:
                0 14px 40px rgba(247, 123, 72, .34),
                0 0 0 1px rgba(255, 194, 126, .26) inset,
                0 0 44px rgba(255, 179, 107, .13);
        }
        .btn-primary:active {
            transform: translateY(0);
            filter: saturate(.92);
            box-shadow:
                0 6px 18px rgba(247, 123, 72, .28),
                0 0 0 1px rgba(255, 179, 107, .2) inset;
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--brand-cyan-light);
            outline-offset: 3px;
        }
        .btn-primary:disabled {
            opacity: .45;
            cursor: not-allowed;
            transform: none;
        }
        .btn-ghost {
            background: rgba(18, 33, 50, .46);
            color: #D9EAF7;
            border-color: rgba(150, 215, 255, .22);
            box-shadow: 0 0 0 rgba(37, 199, 232, .0);
        }
        .btn-ghost:hover {
            color: var(--text-hi);
            border-color: rgba(95, 210, 255, .44);
            background: rgba(18, 33, 50, .68);
            transform: translateY(-1px);
            box-shadow: 0 0 28px rgba(37, 199, 232, .1);
        }
        .btn-ghost:active {
            transform: translateY(0);
        }
        .btn-ghost:focus-visible {
            outline: 2px solid var(--brand-cyan);
            outline-offset: 3px;
        }
        .btn-sm {
            min-height: 38px;
            padding: 0 14px;
            font-size: 14px;
            border-radius: 10px;
        }

        .page-hero {
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(90deg, rgba(7, 13, 22, .9) 0%, rgba(7, 13, 22, .45) 100%),
                url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(70, 200, 240, .05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(70, 200, 240, .05) 1px, transparent 1px);
            background-size: 44px 44px;
            mask-image: radial-gradient(circle at 74% 12%, black 2%, transparent 62%);
            pointer-events: none;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(680px 300px at 72% 36%, rgba(37, 199, 232, .16), transparent 68%),
                radial-gradient(500px 300px at 14% 76%, rgba(247, 123, 72, .1), transparent 62%);
            pointer-events: none;
        }
        .glass-panel {
            background: var(--glass-bg);
            border: 1px solid rgba(150, 215, 255, .16);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-panel);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            position: relative;
            overflow: hidden;
        }
        .glass-panel::before {
            content: "";
            position: absolute;
            top: 0;
            left: 16px;
            right: 16px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(220, 246, 255, .45), transparent);
        }
        .terminal-panel {
            background: rgba(8, 18, 30, .78);
            border: 1px solid rgba(150, 215, 255, .14);
            border-radius: 16px;
            box-shadow: var(--shadow-panel);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .terminal-head {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 16px;
            border-bottom: 1px solid rgba(150, 215, 255, .1);
        }
        .terminal-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }
        .terminal-body {
            padding: 18px;
        }
        .state-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 11px 0;
            border-bottom: 1px dashed rgba(150, 215, 255, .1);
            font-size: 14px;
        }
        .state-row:last-child {
            border-bottom: 0;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 12px;
            letter-spacing: .34em;
            text-transform: uppercase;
            color: var(--accent);
            font-weight: 600;
        }
        .section-title {
            color: var(--text-hi);
            font-weight: 700;
            line-height: 1.28;
            letter-spacing: -.01em;
            margin: 12px 0 14px;
        }
        .section-lead {
            color: var(--text-dim);
            font-size: 16px;
            line-height: 1.85;
            max-width: 680px;
        }

        .status-strip {
            background: rgba(10, 22, 34, .72);
            border: 1px solid rgba(150, 215, 255, .14);
            border-radius: 18px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .status-cell {
            padding: 20px 18px;
            display: flex;
            align-items: center;
            gap: 12px;
            border-right: 1px solid rgba(150, 215, 255, .08);
        }
        .status-cell:last-child {
            border-right: 0;
        }
        .status-icon {
            width: 40px;
            height: 40px;
            flex: 0 0 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(37, 199, 232, .1);
            border: 1px solid rgba(95, 210, 255, .18);
            color: var(--brand-cyan);
        }
        .status-cell strong {
            display: block;
            color: #DCEBFA;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
        }
        .status-cell span {
            color: var(--text-dim);
            font-size: 13px;
        }

        .timeline-wrap {
            position: relative;
            padding-left: 0;
        }
        .timeline-row {
            position: relative;
            display: grid;
            grid-template-columns: clamp(64px, 8vw, 96px) 1fr;
            gap: 24px 22px;
            padding-bottom: 48px;
        }
        .timeline-row:last-child {
            padding-bottom: 0;
        }
        .timeline-rail {
            display: flex;
            justify-content: center;
            position: relative;
        }
        .timeline-rail::before {
            content: "";
            position: absolute;
            top: 16px;
            bottom: -24px;
            width: 1px;
            background: linear-gradient(180deg, rgba(37, 199, 232, .4), rgba(37, 199, 232, .08), transparent);
        }
        .timeline-row:last-child .timeline-rail::before {
            display: none;
        }
        .timeline-num {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #07131C;
            font-weight: 700;
            font-size: 15px;
            border-radius: 16px;
            background: linear-gradient(135deg, #50E3FF, #25C7E8);
            box-shadow: 0 0 0 5px rgba(37, 199, 232, .12), 0 10px 30px rgba(37, 199, 232, .18);
        }
        .timeline-card {
            background: rgba(11, 25, 38, .66);
            border: 1px solid rgba(150, 215, 255, .16);
            border-radius: 16px;
            padding: clamp(20px, 3vw, 28px);
            transition: border-color .25s ease, transform .25s ease, background .25s ease;
        }
        .timeline-card:hover {
            border-color: rgba(95, 210, 255, .4);
            transform: translateY(-2px);
            background: rgba(14, 32, 49, .72);
        }
        .timeline-card h3 {
            color: #EAF4FC;
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .timeline-card h3 svg {
            color: var(--brand-cyan-light);
        }
        .timeline-card p {
            margin: 0 0 14px;
            color: rgba(213, 231, 248, .78);
            font-size: 15px;
            line-height: 1.85;
        }
        .mini-chips {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
        }
        .mini-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 11px;
            border-radius: 999px;
            border: 1px solid rgba(150, 215, 255, .14);
            background: rgba(37, 199, 232, .06);
            color: rgba(213, 231, 248, .74);
            font-size: 13px;
        }

        .media-panel {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 420px;
            overflow: hidden;
            border-radius: 18px;
            border: 1px solid rgba(150, 215, 255, .16);
            background: linear-gradient(140deg, rgba(20, 42, 64, .85), rgba(7, 18, 30, .9));
        }
        .media-panel img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: .42;
            transition: transform .3s ease, opacity .3s ease;
        }
        .media-panel:hover img {
            opacity: .58;
            transform: scale(1.02);
        }
        .media-caption {
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 18px;
            padding: 18px;
            border-radius: 14px;
            background: rgba(7, 15, 24, .76);
            backdrop-filter: blur(14px);
            border: 1px solid rgba(150, 215, 255, .14);
        }

        .check-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px;
            border-radius: 14px;
            background: rgba(11, 24, 38, .6);
            border: 1px solid rgba(150, 215, 255, .12);
            margin-bottom: 12px;
            transition: border-color .2s ease, background .2s ease;
        }
        .check-card:hover {
            border-color: rgba(95, 210, 255, .32);
            background: rgba(13, 28, 44, .72);
        }
        .check-icon {
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 179, 107, .13);
            color: var(--accent);
            border: 1px solid rgba(255, 179, 107, .22);
        }
        .check-copy strong {
            color: #DEEEFA;
            font-size: 15px;
            font-weight: 600;
            display: block;
        }
        .check-copy p {
            margin: 5px 0 0;
            color: var(--text-dim);
            font-size: 14px;
            line-height: 1.75;
        }

        .faq-item {
            border-radius: 16px;
            background: rgba(11, 24, 38, .62);
            border: 1px solid rgba(150, 215, 255, .13);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .22s ease, background .22s ease;
        }
        .faq-item[open] {
            border-color: rgba(95, 210, 255, .34);
            background: rgba(13, 30, 47, .7);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 14px;
            list-style: none;
            cursor: pointer;
            padding: 18px 20px;
            min-height: 54px;
            font-size: 16px;
            color: #E1EEFA;
            font-weight: 600;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            position: relative;
            width: 36px;
            height: 36px;
            flex: 0 0 36px;
            border-radius: 10px;
            background: rgba(37, 199, 232, .1);
            border: 1px solid rgba(95, 210, 255, .2);
            transition: transform .25s ease, background .25s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--brand-cyan);
            border-radius: 2px;
            transition: transform .25s ease;
        }
        .faq-icon::before {
            width: 14px;
            height: 2px;
        }
        .faq-icon::after {
            width: 2px;
            height: 14px;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
            background: rgba(255, 179, 107, .16);
            border-color: rgba(255, 179, 107, .3);
        }
        .faq-item[open] .faq-icon::before,
        .faq-item[open] .faq-icon::after {
            background: var(--accent);
        }
        .faq-answer {
            padding: 0 20px 20px 70px;
            color: rgba(213, 231, 248, .76);
            font-size: 15px;
            line-height: 1.85;
        }

        .cta-block {
            position: relative;
            overflow: hidden;
            border-radius: 24px;
            background:
                linear-gradient(120deg, rgba(255, 179, 107, .08), transparent 36%),
                linear-gradient(200deg, rgba(37, 199, 232, .12), rgba(5, 15, 24, .92)),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border: 1px solid rgba(255, 179, 107, .22);
        }
        .cta-block::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: conic-gradient(from 35deg, transparent 0deg, rgba(255, 220, 160, .08) 18deg, transparent 40deg, transparent 180deg, rgba(37, 199, 232, .08) 200deg, transparent 220deg);
            animation: ctashift 7s linear infinite;
        }
        @keyframes ctashift {
            0% {
                transform: rotate(0deg) translateX(0);
            }
            100% {
                transform: rotate(360deg) translateX(0);
            }
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-vline {
            width: 2px;
            align-self: stretch;
            background: linear-gradient(180deg, rgba(255, 179, 107, .3), rgba(37, 199, 232, .2), transparent);
        }

        footer {
            background: rgba(2, 6, 10, .86);
            border-top: 1px solid rgba(37, 199, 232, .12);
        }
        .footer-glow-line {
            background: linear-gradient(90deg, transparent, rgba(37, 199, 232, .45) 20%, rgba(255, 179, 107, .48) 50%, rgba(37, 199, 232, .45) 80%, transparent);
            height: 1px;
        }
        .footer-link {
            color: rgba(154, 184, 214, .55);
            font-size: 14px;
            text-decoration: none;
            transition: color .2s ease, padding-left .2s ease;
            display: inline-block;
        }
        .footer-link:hover,
        .footer-link:focus-visible {
            color: var(--brand-cyan-light);
            padding-left: 2px;
        }
        .footer-heading {
            color: #F0F6FB;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: .02em;
        }

        .mobile-menu {
            display: block;
            position: fixed;
            inset: 0;
            z-index: 70;
            background: rgba(7, 13, 22, .58);
            backdrop-filter: blur(4px);
            visibility: hidden;
            opacity: 0;
            transition: opacity .25s ease, visibility .25s ease;
        }
        .mobile-menu.open {
            visibility: visible;
            opacity: 1;
        }
        .mobile-drawer {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: min(86%, 390px);
            background: linear-gradient(160deg, rgba(12, 26, 40, .98), rgba(5, 13, 22, .99));
            border-left: 1px solid rgba(150, 215, 255, .18);
            box-shadow: -20px 0 60px rgba(0, 0, 0, .4);
            padding: 22px 18px 26px;
            display: flex;
            flex-direction: column;
            transform: translateX(30px);
            transition: transform .28s ease;
        }
        .mobile-menu.open .mobile-drawer {
            transform: translateX(0);
        }
        .drawer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid rgba(150, 215, 255, .1);
            padding-bottom: 14px;
            margin-bottom: 16px;
        }
        .drawer-brand {
            font-weight: 700;
            color: #EEF6FE;
            font-size: 18px;
            line-height: 1.4;
        }
        .drawer-brand small {
            display: block;
            color: var(--brand-cyan);
            font-size: 10px;
            letter-spacing: .42em;
            text-indent: .42em;
        }
        .drawer-close {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            border: 1px solid rgba(150, 215, 255, .16);
            background: rgba(255, 255, 255, .04);
            color: #C8DDEB;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        @media (max-width: 1023px) {
            .desktop-only {
                display: none;
            }
            .header-inner {
                grid-template-columns: 1fr auto 58px;
            }
            .header-logo {
                align-items: center;
                padding-left: 0;
                padding-right: 0;
            }
            .header-actions {
                justify-content: flex-end;
            }
        }
        @media (min-width: 1024px) {
            .mobile-only {
                display: none;
            }
            .mobile-menu {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .header-logo .logo-main {
                font-size: 16px;
            }
            .page-hero {
                background:
                    linear-gradient(180deg, rgba(7, 13, 22, .72), rgba(7, 13, 22, .92)),
                    url('/assets/images/backpic/back-3.webp') right 30% center / cover;
            }
            .status-cell {
                border-right: 0;
            }
            .timeline-row {
                grid-template-columns: 56px 1fr;
                gap: 12px;
            }
            .timeline-num {
                width: 40px;
                height: 40px;
                border-radius: 12px;
                font-size: 14px;
            }
            .faq-answer {
                padding-left: 20px;
            }
            .cta-vline {
                display: none;
            }
        }
        @media (min-width: 640px) and (max-width: 1023px) {
            .status-cell:nth-child(odd) {
                border-right: 1px solid rgba(150, 215, 255, .08);
            }
        }
        @media (max-width: 520px) {
            .header-actions .action-btn-label {
                display: none;
            }
        }
        @media print {
            .site-header,
            .mobile-menu,
            .no-print {
                display: none !important;
            }
            body {
                color: #222;
                background: #fff;
            }
            main {
                padding-top: 0;
            }
        }
        :focus-visible {
            outline: 2px solid var(--brand-cyan-light);
            outline-offset: 3px;
        }
        ::selection {
            background: rgba(37, 199, 232, .26);
            color: #F1FAFF;
        }

/* roulang page: category2 */
:root {
        --page-bg: #070D16;
        --page-bg-deep: #04090F;
        --panel-bg: rgba(18, 33, 50, 0.62);
        --brand-cyan: #25C7E8;
        --brand-cyan-bright: #6DE4FF;
        --accent-amber: #FFB36B;
        --accent-deep: #F77B48;
        --text-main: #E7F1FA;
        --text-regular: rgba(213, 231, 248, 0.84);
        --text-mute: rgba(154, 184, 214, 0.7);
        --border-dim: rgba(150, 215, 255, 0.16);
        --border-bright: rgba(95, 210, 255, 0.4);
        --radius-md: 12px;
        --radius-lg: 16px;
        --shadow-cyan: 0 0 24px rgba(37, 199, 232, 0.12);
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        background:
            radial-gradient(circle at 16% 8%, rgba(37, 199, 232, 0.12), transparent 28%),
            radial-gradient(circle at 88% 4%, rgba(247, 123, 72, 0.06), transparent 20%),
            var(--page-bg);
        color: var(--text-main);
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        line-height: 1.7;
        min-height: 100vh;
        overflow-x: hidden;
    }

    body::after {
        content: "";
        position: fixed;
        inset: 0;
        z-index: 100;
        pointer-events: none;
        opacity: 0.35;
        mix-blend-mode: overlay;
        background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(/%23n)' opacity='0.18'/%3E%3C/svg%3E");
    }

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

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

    button,
    input,
    select,
    textarea {
        font: inherit;
    }

    .container-custom {
        max-width: 1320px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 24px;
        padding-right: 24px;
    }

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

    .relative {
        position: relative;
    }

    .z-index-1 {
        z-index: 1;
    }

    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 600;
        border-bottom: 1px solid transparent;
        background: transparent;
        transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    }

    .site-header.scrolled {
        background: rgba(7, 13, 22, 0.82);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border-bottom-color: rgba(150, 215, 255, 0.12);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.28);
    }

    .header-grid {
        display: grid;
        grid-template-columns: 1fr auto 1fr;
        align-items: center;
        gap: 24px;
        min-height: 84px;
    }

    .header-nav {
        display: flex;
        align-items: center;
        gap: 8px;
    }

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

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

    .nav-link,
    .header-cta {
        font-size: 14px;
        font-weight: 500;
        color: rgba(213, 231, 248, 0.8);
        padding: 8px 14px;
        border-radius: 10px;
        border: 1px solid transparent;
        transition: color 0.2s, border-color 0.2s, background 0.2s;
        white-space: nowrap;
    }

    .nav-link:hover {
        color: #fff;
        border-color: rgba(95, 210, 255, 0.18);
        background: rgba(37, 199, 232, 0.08);
    }

    .nav-link.active {
        color: #fff;
        background: rgba(37, 199, 232, 0.12);
        border-color: rgba(95, 210, 255, 0.28);
        box-shadow: inset 0 0 0 1px rgba(95, 210, 255, 0.06);
    }

    .site-logo {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        line-height: 1.25;
        padding: 6px 14px;
        border-radius: 14px;
        border: 1px solid rgba(150, 215, 255, 0.18);
        background: rgba(18, 33, 50, 0.3);
        transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
    }

    .site-logo:hover {
        border-color: rgba(95, 210, 255, 0.42);
        box-shadow: 0 0 0 1px rgba(95, 210, 255, 0.1), 0 8px 30px rgba(37, 199, 232, 0.08);
    }

    .brand-primary {
        font-size: 19px;
        font-weight: 700;
        letter-spacing: 0.04em;
        color: #f2f8fe;
    }

    .brand-sub {
        font-size: 10px;
        letter-spacing: 0.48em;
        margin-top: 2px;
        color: var(--brand-cyan);
        text-transform: uppercase;
        text-indent: 0.48em;
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 44px;
        padding: 0 20px;
        border-radius: 12px;
        color: #131313;
        font-size: 15px;
        font-weight: 700;
        border: 1px solid rgba(255, 255, 255, 0.2);
        background: linear-gradient(135deg, #FFD29F 0%, #FFB36B 45%, #F77B48 100%);
        box-shadow: 0 8px 16px -8px rgba(255, 179, 107, 0.55), 0 4px 24px rgba(247, 123, 72, 0.2), inset 0 0 12px rgba(255, 255, 255, 0.18);
        transition: transform 0.2s, box-shadow 0.25s, filter 0.2s;
    }

    .btn-primary:hover {
        transform: translateY(-1px);
        filter: saturate(1.05);
        box-shadow: 0 10px 20px -8px rgba(255, 179, 107, 0.7), 0 4px 32px rgba(247, 123, 72, 0.28), inset 0 0 12px rgba(255, 255, 255, 0.22);
    }

    .btn-primary:active {
        transform: translateY(0);
        filter: saturate(0.96);
        box-shadow: 0 4px 14px -4px rgba(255, 179, 107, 0.5), 0 0 18px rgba(247, 123, 72, 0.15);
    }

    .btn-primary:focus-visible,
    .btn-secondary:focus-visible,
    .nav-link:focus-visible,
    .site-logo:focus-visible,
    .link-card:focus-visible,
    summary:focus-visible,
    .hamburger:focus-visible {
        outline: 2px solid var(--brand-cyan-bright);
        outline-offset: 3px;
    }

    .btn-secondary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 44px;
        padding: 0 20px;
        border-radius: 12px;
        font-size: 15px;
        font-weight: 600;
        background: rgba(18, 33, 50, 0.46);
        color: #DBECF8;
        border: 1px solid var(--border-dim);
        transition: border-color 0.2s, color 0.2s, background 0.2s, box-shadow 0.2s;
    }

    .btn-secondary:hover {
        border-color: rgba(95, 210, 255, 0.54);
        box-shadow: 0 0 24px rgba(37, 199, 232, 0.12);
        background: rgba(37, 199, 232, 0.06);
    }

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

    .menu-toggle {
        display: none;
    }

    .hamburger {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        border: 1px solid rgba(150, 215, 255, 0.16);
        background: rgba(18, 33, 50, 0.54);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        cursor: pointer;
    }

    .hamburger span {
        width: 20px;
        height: 2px;
        border-radius: 2px;
        background: #EAF4FF;
        display: block;
        transition: transform 0.2s, opacity 0.2s;
    }

    .mobile-drawer {
        position: fixed;
        top: 0;
        right: 0;
        width: min(82vw, 340px);
        height: 100vh;
        background: rgba(4, 9, 15, 0.98);
        -webkit-backdrop-filter: blur(18px);
        backdrop-filter: blur(18px);
        border-left: 1px solid rgba(150, 215, 255, 0.12);
        z-index: 900;
        transform: translateX(104%);
        transition: transform 0.35s ease;
        display: flex;
        flex-direction: column;
        padding: 28px 20px 24px;
        overflow-y: auto;
    }

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

    .drawer-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.58);
        z-index: 840;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s, visibility 0s linear 0.3s;
    }

    .drawer-backdrop.show {
        opacity: 1;
        visibility: visible;
        transition: opacity 0.3s, visibility 0s;
    }

    body.lock-scroll {
        overflow: hidden;
    }

    .hero-cat {
        position: relative;
        min-height: 660px;
        display: flex;
        align-items: center;
        overflow: hidden;
        background:
            linear-gradient(120deg, rgba(7, 13, 22, 0.97) 0%, rgba(7, 13, 22, 0.78) 44%, rgba(7, 13, 22, 0.42) 78%, rgba(7, 13, 22, 0.76) 100%),
            linear-gradient(180deg, rgba(4, 9, 15, 0.4) 0%, rgba(7, 13, 22, 0.2) 60%),
            url("/assets/images/backpic/back-2.webp") center center / cover no-repeat;
    }

    .hero-cat::after {
        content: "";
        pointer-events: none;
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        background-image:
            linear-gradient(rgba(95, 210, 255, 0.04) 1px, transparent 1px),
            linear-gradient(90deg, rgba(95, 210, 255, 0.04) 1px, transparent 1px);
        background-size: 44px 44px;
        mask-image: linear-gradient(90deg, transparent, #000 60%, transparent);
    }

    .cat-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-mute);
    }

    .cat-breadcrumb a {
        transition: color 0.2s;
    }

    .cat-breadcrumb a:hover {
        color: var(--brand-cyan-bright);
    }

    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        letter-spacing: 0.28em;
        text-transform: uppercase;
        color: var(--accent-amber);
    }

    .section-head .eyebrow {
        color: var(--accent-amber);
    }

    .section-gap {
        padding-top: clamp(64px, 8vw, 104px);
        padding-bottom: clamp(64px, 8vw, 104px);
    }

    .glass-panel {
        background: linear-gradient(145deg, rgba(20, 36, 55, 0.66), rgba(12, 24, 39, 0.76));
        border: 1px solid var(--border-dim);
        border-radius: var(--radius-lg);
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 18px 40px -26px rgba(0, 0, 0, 0.6);
        -webkit-backdrop-filter: blur(12px);
        backdrop-filter: blur(12px);
    }

    .glass-soft {
        background: rgba(18, 33, 50, 0.56);
        border: 1px solid rgba(150, 215, 255, 0.12);
        border-radius: var(--radius-md);
        -webkit-backdrop-filter: blur(12px);
        backdrop-filter: blur(12px);
    }

    .glow-cyan {
        box-shadow: inset 0 0 0 1px rgba(95, 210, 255, 0.04), 0 0 30px rgba(37, 199, 232, 0.1);
    }

    .accent-border {
        border-color: rgba(255, 179, 107, 0.35);
    }

    .status-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #6DE4FF;
        box-shadow: 0 0 10px #25C7E8;
        display: inline-block;
        vertical-align: middle;
    }

    .status-dot.accent {
        background: #FFB36B;
        box-shadow: 0 0 10px #F77B48;
    }

    .status-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
        margin-top: 4px;
    }

    .status-list li {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 0;
        border-bottom: 1px solid rgba(150, 215, 255, 0.08);
        font-size: 14px;
        color: var(--text-mute);
    }

    .status-list span:last-child {
        color: #E7F1FA;
        font-weight: 500;
        font-size: 13px;
    }

    .feature-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border-radius: 12px;
        color: var(--brand-cyan);
        background: rgba(37, 199, 232, 0.1);
        border: 1px solid rgba(95, 210, 255, 0.12);
        box-shadow: 0 0 16px rgba(37, 199, 232, 0.06);
    }

    .feature-icon.amber {
        color: var(--accent-amber);
        background: rgba(255, 179, 107, 0.1);
        border-color: rgba(255, 179, 107, 0.12);
        box-shadow: 0 0 16px rgba(255, 179, 107, 0.08);
    }

    .shield-card {
        transition: background 0.3s, border-color 0.3s, transform 0.3s, box-shadow 0.3s;
        background: rgba(14, 28, 45, 0.62);
        border: 1px solid rgba(150, 215, 255, 0.14);
        border-radius: 16px;
        backdrop-filter: blur(9px);
        -webkit-backdrop-filter: blur(9px);
    }

    .shield-card:hover {
        background: rgba(17, 34, 54, 0.7);
        border-color: rgba(95, 210, 255, 0.32);
        transform: translateY(-3px);
        box-shadow: 0 14px 28px -18px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(95, 210, 255, 0.03), 0 0 28px rgba(37, 199, 232, 0.1);
    }

    .tag {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        font-size: 12px;
        font-weight: 600;
        padding: 4px 10px;
        border-radius: 20px;
        background: rgba(37, 199, 232, 0.12);
        color: var(--brand-cyan-bright);
        border: 1px solid rgba(95, 210, 255, 0.18);
    }

    .tag-amber {
        background: rgba(255, 179, 107, 0.1);
        border-color: rgba(255, 179, 107, 0.28);
        color: #ffc38c;
    }

    .cat-card-link {
        position: static;
        text-decoration: none;
        color: var(--brand-cyan-bright);
        font-size: 14px;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: gap 0.2s;
    }

    .shield-card:hover .cat-card-link {
        gap: 10px;
    }

    .cover-ratio {
        aspect-ratio: 16 / 10;
        background: linear-gradient(135deg, #0A1828, #0f2237);
        overflow: hidden;
        position: relative;
    }

    .cover-ratio img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.86;
        transition: opacity 0.3s, transform 0.4s;
    }

    .shield-card:hover .cover-ratio img {
        opacity: 0.95;
        transform: scale(1.02);
    }

    .cover-ratio::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, transparent 42%, rgba(5, 11, 19, 0.8) 100%);
    }

    .steps-item {
        position: relative;
        padding-left: 58px;
    }

    .steps-item .steps-node {
        position: absolute;
        left: 0;
        top: 0;
        display: flex;
        flex: 0 0 44px;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: 14px;
        color: #111;
        font-weight: 800;
        background: linear-gradient(135deg, #ffd29f, #f77b48);
        box-shadow: 0 8px 16px -6px rgba(255, 179, 107, 0.5);
    }

    .faq-list details {
        background: rgba(13, 25, 41, 0.72);
        border: 1px solid rgba(150, 215, 255, 0.12);
        border-radius: 16px;
        padding: 20px 24px;
        transition: border-color 0.25s, background 0.25s;
    }

    .faq-list summary {
        cursor: pointer;
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 16px;
        font-weight: 600;
        color: #E7F1FA;
        line-height: 1.5;
        padding: 2px 0;
        outline: none;
    }

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

    .faq-list details .faq-icon {
        width: 28px;
        height: 28px;
        border-radius: 9px;
        border: 1px solid rgba(95, 210, 255, 0.25);
        color: var(--brand-cyan-bright);
        background: rgba(37, 199, 232, 0.08);
        position: relative;
        flex: 0 0 28px;
        transition: transform 0.22s, border-color 0.22s, background 0.22s;
    }

    .faq-list details .faq-icon::before,
    .faq-list details .faq-icon::after {
        content: "";
        position: absolute;
        left: 50%;
        top: 50%;
        width: 12px;
        height: 1.6px;
        background: currentColor;
        transform: translate(-50%, -50%);
        border-radius: 4px;
    }

    .faq-list details .faq-icon::after {
        transform: translate(-50%, -50%) rotate(90deg);
    }

    .faq-list details[open] .faq-icon {
        transform: rotate(135deg);
        border-color: rgba(255, 179, 107, 0.4);
        color: var(--accent-amber);
        background: rgba(255, 179, 107, 0.08);
    }

    .faq-list details[open] {
        background: rgba(16, 31, 49, 0.86);
        border-color: rgba(95, 210, 255, 0.28);
    }

    .faq-answer {
        padding: 14px 0 2px;
        color: var(--text-regular);
        font-size: 15px;
        line-height: 1.85;
    }

    .link-muted {
        color: rgba(154, 184, 214, 0.58);
        font-size: 13px;
        transition: color 0.2s;
    }

    .link-muted:hover {
        color: var(--brand-cyan-bright);
    }

    .cta-block {
        background:
            linear-gradient(90deg, rgba(247, 123, 72, 0.12), transparent 20%, rgba(37, 199, 232, 0.12) 84%),
            radial-gradient(circle at 16% 40%, rgba(37, 199, 232, 0.1), transparent 28%),
            radial-gradient(circle at 82% 66%, rgba(247, 123, 72, 0.08), transparent 28%),
            rgba(5, 11, 20, 0.88);
        border: 1px solid rgba(95, 210, 255, 0.18);
        border-radius: 24px;
        overflow: hidden;
        position: relative;
    }

    .cta-block::before {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(37, 199, 232, 0.5), rgba(255, 179, 107, 0.6), transparent);
    }

    @media (max-width: 1023px) {
        .desktop-only {
            display: none !important;
        }

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

        .header-grid {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .site-brand-wrap {
            order: 2;
        }

        .menu-toggle {
            order: 1;
        }

        .mobile-cta-wrap {
            order: 3;
        }

        .header-nav {
            display: none;
        }
    }

    @media (min-width: 1024px) {
        .mobile-only {
            display: none !important;
        }
    }

    @media (max-width: 680px) {
        .adjust-title {
            font-size: 2rem;
            line-height: 1.22;
        }

        .hero-cat {
            min-height: 640px;
            padding-top: 40px;
        }

        .section-gap {
            padding-top: 54px;
            padding-bottom: 54px;
        }

        .faq-list details {
            padding: 16px 18px;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            transition-duration: 0.01ms !important;
        }
    }

    @media print {
        .no-print {
            display: none !important;
        }

        body {
            background: #ffffff;
            color: #111;
        }

        .glass-panel,
        .shield-card {
            background: #f4f7fb;
            color: #111;
            border-color: #ccc;
        }
    }

/* roulang page: category4 */
:root {
        --bg: #070D16;
        --bg-deep: #04090F;
        --panel: rgba(18, 33, 50, 0.62);
        --brand-cyan: #25C7E8;
        --brand-cyan-light: #6DE4FF;
        --accent: #FFB36B;
        --accent-strong: #F77B48;
        --text: #E7F1FA;
        --text-soft: rgba(213, 231, 248, 0.84);
        --text-mute: rgba(154, 184, 214, 0.7);
        --border: rgba(150, 215, 255, 0.18);
        --border-strong: rgba(95, 210, 255, 0.4);
        --radius-sm: 10px;
        --radius: 12px;
        --radius-lg: 16px;
        --shadow: 0 18px 56px rgba(0, 0, 0, 0.32);
        --transition: all 0.25s ease;
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--bg);
        background-image:
            radial-gradient(1000px 420px at 78% -10%, rgba(37, 199, 232, 0.1), transparent 60%),
            radial-gradient(720px 360px at 10% 18%, rgba(255, 179, 107, 0.06), transparent 60%);
        color: var(--text);
        font-family: var(--font-stack);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
        min-height: 100vh;
    }

    body.no-scroll {
        overflow: hidden;
    }

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

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

    button {
        font-family: inherit;
        cursor: pointer;
    }

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

    @media (min-width: 640px) {
        .container-custom {
            padding-left: 28px;
            padding-right: 28px;
        }
    }

    @media (min-width: 1024px) {
        .container-custom {
            padding-left: 36px;
            padding-right: 36px;
        }
    }

    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 120;
        height: 78px;
        background: rgba(7, 13, 22, 0.72);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(95, 210, 255, 0.12);
        transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .site-header.scrolled {
        background: rgba(4, 9, 15, 0.92);
        border-bottom-color: rgba(95, 210, 255, 0.18);
        box-shadow: 0 12px 36px rgba(0, 0, 0, 0.28);
    }

    .header-inner {
        height: 78px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
    }

    @media (min-width: 1024px) {
        .header-inner {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
        }
    }

    .header-left,
    .header-right {
        display: flex;
        align-items: center;
    }

    .header-right {
        justify-content: flex-end;
    }

    .nav-zone {
        display: flex;
        align-items: center;
        gap: 4px;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 38px;
        padding: 6px 11px;
        border-radius: 999px;
        color: rgba(213, 231, 248, 0.78);
        font-size: 14px;
        font-weight: 500;
        letter-spacing: 0.01em;
        transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        border: 1px solid transparent;
    }

    .nav-link:hover {
        color: #ffffff;
        background: rgba(255, 255, 255, 0.06);
    }

    .nav-link:focus-visible,
    .m-nav-link:focus-visible,
    .btn:focus-visible {
        outline: 2px solid var(--brand-cyan-light);
        outline-offset: 3px;
    }

    .nav-link.nav-active {
        color: #ffffff;
        background: rgba(37, 199, 232, 0.12);
        border-color: rgba(95, 210, 255, 0.28);
    }

    .nav-link.nav-active:hover {
        background: rgba(37, 199, 232, 0.18);
        border-color: rgba(95, 210, 255, 0.4);
    }

    .brand-lockup {
        display: inline-flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        text-align: center;
        line-height: 1.2;
        padding: 8px 4px;
    }

    .brand-primary {
        color: #ffffff;
        font-size: 19px;
        font-weight: 700;
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

    .brand-small {
        color: var(--brand-cyan);
        font-size: 11px;
        letter-spacing: 0.48em;
        text-indent: 0.48em;
        font-weight: 500;
    }

    .mobile-bar {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
    }

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

    .hamburger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        border-radius: 12px;
        border: 1px solid var(--border);
        background: rgba(255, 255, 255, 0.04);
        color: var(--text);
    }

    .hamburger:hover {
        border-color: var(--border-strong);
        background: rgba(37, 199, 232, 0.08);
    }

    .mobile-drawer {
        position: fixed;
        top: 0;
        right: 0;
        width: min(84vw, 360px);
        height: 100%;
        z-index: 160;
        background: linear-gradient(165deg, rgba(13, 24, 38, 0.98), rgba(5, 10, 18, 0.99));
        border-left: 1px solid rgba(95, 210, 255, 0.14);
        transform: translateX(102%);
        transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
        display: flex;
        flex-direction: column;
        padding: 22px 18px 28px;
        overflow-y: auto;
        box-shadow: -24px 0 60px rgba(0, 0, 0, 0.38);
    }

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

    .drawer-backdrop {
        position: fixed;
        inset: 0;
        z-index: 150;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(3px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.25s ease;
    }

    .drawer-backdrop.open {
        opacity: 1;
        pointer-events: auto;
    }

    .m-nav-link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 48px;
        padding: 12px 14px;
        border-radius: 12px;
        border: 1px solid rgba(150, 215, 255, 0.12);
        color: rgba(231, 241, 250, 0.82);
        font-size: 15px;
        font-weight: 500;
        transition: all 0.2s ease;
    }

    .m-nav-link:hover {
        background: rgba(255, 255, 255, 0.06);
        color: #ffffff;
    }

    .m-nav-link.m-active {
        background: rgba(37, 199, 232, 0.12);
        border-color: rgba(95, 210, 255, 0.26);
        color: #ffffff;
    }

    .drawer-close {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        border-radius: 12px;
        color: var(--text);
        background: transparent;
        border: 1px solid var(--border);
        transition: all 0.2s ease;
    }

    .drawer-close:hover {
        background: rgba(255, 255, 255, 0.07);
        border-color: rgba(255, 179, 107, 0.24);
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 44px;
        padding: 11px 22px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 700;
        line-height: 1.2;
        transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease, border-color 0.22s ease;
        border: 1px solid transparent;
        white-space: nowrap;
    }

    .btn-primary {
        background: linear-gradient(135deg, #FFB36B, #F77B48);
        color: #1A202B;
        box-shadow:
            0 0 0 1px rgba(255, 255, 255, 0.16) inset,
            0 8px 24px rgba(247, 123, 72, 0.18),
            0 2px 10px rgba(247, 123, 72, 0.32);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        background: linear-gradient(135deg, #FFC08A, #FF8A59);
        box-shadow:
            0 0 0 1px rgba(255, 255, 255, 0.22) inset,
            0 12px 30px rgba(247, 123, 72, 0.28),
            0 4px 14px rgba(247, 123, 72, 0.42);
    }

    .btn-primary:active {
        transform: translateY(0);
        box-shadow:
            0 0 0 1px rgba(255, 255, 255, 0.14) inset,
            0 4px 14px rgba(247, 123, 72, 0.24);
    }

    .btn-secondary {
        background: rgba(10, 22, 36, 0.6);
        color: var(--brand-cyan-light);
        border-color: rgba(95, 210, 255, 0.34);
        box-shadow: 0 0 0 1px rgba(37, 199, 232, 0.06) inset;
    }

    .btn-secondary:hover {
        background: rgba(37, 199, 232, 0.08);
        border-color: rgba(95, 210, 255, 0.6);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(37, 199, 232, 0.1);
    }

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

    .btn-cta {
        font-size: 14px;
        min-height: 40px;
        padding: 8px 18px;
    }

    .cta-nav {
        min-height: 42px;
        padding: 9px 18px;
    }

    .cat-hero {
        position: relative;
        overflow: hidden;
        padding: 138px 0 72px;
        background-color: #08101b;
        background-image:
            linear-gradient(120deg, rgba(5, 10, 18, 0.9) 0%, rgba(10, 25, 42, 0.78) 48%, rgba(5, 10, 18, 0.86) 100%),
            url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        border-bottom: 1px solid rgba(95, 210, 255, 0.12);
    }

    .cat-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        background-image:
            linear-gradient(rgba(37, 199, 232, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(37, 199, 232, 0.04) 1px, transparent 1px);
        background-size: 44px 44px;
        mask-image: radial-gradient(circle at 30% 20%, black, transparent 65%);
        -webkit-mask-image: radial-gradient(circle at 30% 20%, black, transparent 65%);
        opacity: 0.5;
    }

    .breadcrumb {
        position: relative;
        z-index: 2;
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 13px;
        color: var(--text-mute);
        margin-bottom: 28px;
    }

    .breadcrumb a {
        color: rgba(213, 231, 248, 0.68);
        transition: color 0.2s ease;
    }

    .breadcrumb a:hover {
        color: var(--brand-cyan-light);
    }

    .breadcrumb .crumb-current {
        color: var(--brand-cyan-light);
    }

    .hero-grid {
        position: relative;
        z-index: 2;
        display: grid;
        grid-template-columns: 1fr;
        gap: 44px;
        align-items: center;
    }

    @media (min-width: 1024px) {
        .hero-grid {
            grid-template-columns: 1.1fr 0.9fr;
            gap: 64px;
        }
    }

    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--accent);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.34em;
        text-transform: uppercase;
        margin-bottom: 18px;
    }

    .eyebrow::before {
        content: "";
        width: 22px;
        height: 1px;
        background: var(--accent);
        opacity: 0.7;
    }

    .cat-hero h1 {
        margin: 0 0 22px;
        font-size: clamp(1.7rem, 4.5vw, 3.3rem);
        line-height: 1.22;
        font-weight: 700;
        color: #ffffff;
        letter-spacing: 0.01em;
    }

    .cat-hero h1 .h1-main {
        display: block;
        color: var(--brand-cyan-light);
    }

    .cat-hero h1 .h1-sub {
        display: block;
        margin-top: 10px;
        font-size: 0.62em;
        color: rgba(231, 241, 250, 0.95);
        font-weight: 600;
        letter-spacing: 0.08em;
    }

    .hero-desc {
        max-width: 620px;
        margin: 0 0 30px;
        color: var(--text-soft);
        font-size: 16px;
        line-height: 1.85;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
    }

    .glass-card {
        background: rgba(18, 33, 50, 0.62);
        border: 1px solid rgba(150, 215, 255, 0.18);
        border-radius: 18px;
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        box-shadow: var(--shadow);
        position: relative;
    }

    .glass-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 18px;
        right: 18px;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
        opacity: 0.32;
        border-radius: 50%;
    }

    .status-panel {
        padding: 24px;
    }

    @media (min-width: 480px) {
        .status-panel {
            padding: 28px;
        }
    }

    .panel-head {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        margin-bottom: 20px;
        padding-bottom: 16px;
        border-bottom: 1px solid rgba(150, 215, 255, 0.12);
    }

    .panel-title {
        font-size: 15px;
        color: #ffffff;
        font-weight: 700;
    }

    .panel-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        color: rgba(109, 228, 255, 0.95);
        font-size: 12px;
        padding: 5px 10px;
        border-radius: 999px;
        background: rgba(37, 199, 232, 0.1);
        border: 1px solid rgba(95, 210, 255, 0.2);
    }

    .panel-badge .dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: currentColor;
        box-shadow: 0 0 8px currentColor;
    }

    .login-status-list {
        list-style: none;
        margin: 0;
        padding: 0;
        display: grid;
        gap: 12px;
    }

    .login-status-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        font-size: 14px;
        padding: 12px 2px;
        color: var(--text-soft);
        border-bottom: 1px dashed rgba(150, 215, 255, 0.08);
    }

    .login-status-item:last-child {
        border-bottom: 0;
    }

    .login-status-item strong {
        color: #ffffff;
        font-weight: 600;
        display: inline-flex;
        align-items: center;
        gap: 8px;
    }

    .login-status-item strong .dot-green {
        width: 7px;
        height: 7px;
        background: #5FE1A1;
        border-radius: 999px;
        box-shadow: 0 0 10px rgba(95, 225, 161, 0.5);
        display: inline-block;
    }

    .panel-note {
        margin-top: 18px;
        padding: 12px 14px;
        font-size: 13px;
        line-height: 1.7;
        color: var(--text-mute);
        background: rgba(255, 255, 255, 0.03);
        border-left: 2px solid rgba(255, 179, 107, 0.5);
        border-radius: 0 10px 10px 0;
    }

    .section-block {
        padding: 72px 0;
        position: relative;
    }

    @media (min-width: 768px) {
        .section-block {
            padding: 96px 0;
        }
    }

    .section-head {
        max-width: 720px;
        margin-bottom: 42px;
    }

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

    .section-head.center .eyebrow {
        justify-content: center;
    }

    .section-head h2 {
        margin: 0 0 14px;
        font-size: clamp(1.5rem, 2.8vw, 2.2rem);
        color: #ffffff;
        line-height: 1.3;
        letter-spacing: 0.01em;
    }

    .section-head p {
        margin: 0;
        color: var(--text-soft);
        font-size: 16px;
        line-height: 1.8;
    }

    .stat-band {
        position: relative;
        z-index: 3;
        margin-top: -22px;
        padding-bottom: 56px;
    }

    .stat-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    @media (min-width: 768px) {
        .stat-grid {
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 16px;
        }
    }

    .stat-card {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 18px;
        border-radius: 14px;
        background: rgba(12, 23, 36, 0.7);
        border: 1px solid rgba(150, 215, 255, 0.14);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }

    .stat-icon {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        color: var(--brand-cyan);
        background: rgba(37, 199, 232, 0.1);
        border-radius: 9px;
        border: 1px solid rgba(95, 210, 255, 0.12);
    }

    .stat-name {
        font-size: 14px;
        color: var(--text-soft);
        margin-bottom: 2px;
    }

    .stat-value {
        font-size: 13px;
        color: rgba(154, 184, 214, 0.65);
        line-height: 1.5;
    }

    .verify-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
    }

    @media (min-width: 768px) {
        .verify-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }
    }

    @media (min-width: 1024px) {
        .verify-grid {
            grid-template-columns: repeat(4, minmax(0, 1fr));
        }
    }

    .verify-card {
        position: relative;
        min-height: 220px;
        padding: 26px 22px 22px;
        background: linear-gradient(150deg, rgba(17, 33, 50, 0.78), rgba(8, 15, 25, 0.68));
        border: 1px solid rgba(150, 215, 255, 0.15);
        border-radius: 16px;
        overflow: hidden;
        transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
    }

    .verify-card::after {
        content: "";
        position: absolute;
        width: 100px;
        height: 1px;
        top: 0;
        right: 20px;
        background: linear-gradient(90deg, transparent, var(--brand-cyan), transparent);
        opacity: 0.35;
    }

    .verify-card:hover {
        transform: translateY(-4px);
        border-color: rgba(95, 210, 255, 0.35);
        background: linear-gradient(150deg, rgba(22, 43, 64, 0.86), rgba(10, 19, 31, 0.78));
    }

    .step-number {
        display: inline-block;
        font-size: 14px;
        font-weight: 700;
        color: var(--accent);
        letter-spacing: 0.1em;
        margin-bottom: 16px;
    }

    .verify-card h3 {
        margin: 0 0 10px;
        color: #ffffff;
        font-size: 18px;
        line-height: 1.4;
    }

    .verify-card p {
        margin: 0;
        font-size: 14px;
        color: var(--text-soft);
        line-height: 1.75;
    }

    .verify-card .mini-tip {
        display: block;
        margin-top: 16px;
        padding-top: 12px;
        border-top: 1px solid rgba(150, 215, 255, 0.08);
        font-size: 12px;
        color: rgba(154, 184, 214, 0.62);
    }

    .feature-stack {
        display: grid;
        gap: 28px;
    }

    .feature-card-row {
        display: grid;
        grid-template-columns: 1fr;
        gap: 0;
        overflow: hidden;
        background: linear-gradient(140deg, rgba(15, 30, 48, 0.76), rgba(7, 14, 23, 0.72));
        border: 1px solid rgba(150, 215, 255, 0.16);
        border-radius: 18px;
        transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
    }

    .feature-card-row:hover {
        transform: translateY(-4px);
        border-color: rgba(95, 210, 255, 0.32);
        box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3);
    }

    @media (min-width: 1024px) {
        .feature-card-row {
            grid-template-columns: 1fr 1fr;
            min-height: 360px;
        }
    }

    .feature-media {
        position: relative;
        min-height: 240px;
        order: 1;
        overflow: hidden;
    }

    @media (min-width: 1024px) {
        .feature-media {
            min-height: 360px;
            order: 1;
        }
    }

    .feature-copy {
        order: 2;
        padding: 28px 24px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    @media (min-width: 768px) {
        .feature-copy {
            padding: 40px 36px;
        }
    }

    @media (min-width: 1024px) {
        .feature-card-row.reverse .feature-media {
            order: 2;
        }

        .feature-card-row.reverse .feature-copy {
            order: 1;
        }
    }

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

    .feature-media::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(7, 13, 22, 0.05) 0%, rgba(7, 13, 22, 0.06) 100%);
        pointer-events: none;
    }

    .feature-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--brand-cyan-light);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.12em;
        margin-bottom: 10px;
    }

    .feature-label::before {
        content: "";
        width: 8px;
        height: 8px;
        border-radius: 99px;
        background: var(--brand-cyan);
        box-shadow: 0 0 10px rgba(37, 199, 232, 0.5);
    }

    .feature-copy h3 {
        margin: 0 0 14px;
        font-size: clamp(1.3rem, 2vw, 1.8rem);
        color: #ffffff;
        line-height: 1.35;
    }

    .feature-copy p {
        margin: 0 0 16px;
        color: var(--text-soft);
        font-size: 15px;
        line-height: 1.8;
    }

    .feature-list {
        list-style: none;
        margin: 0 0 20px;
        padding: 0;
        display: grid;
        gap: 10px;
    }

    .feature-list li {
        position: relative;
        padding-left: 22px;
        color: rgba(213, 231, 248, 0.82);
        font-size: 14px;
        line-height: 1.7;
    }

    .feature-list li::before {
        content: "";
        position: absolute;
        left: 0;
        top: 0.7em;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--accent);
        box-shadow: 0 0 8px rgba(255, 179, 107, 0.55);
    }

    .feature-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        color: var(--brand-cyan-light);
        font-weight: 600;
        transition: color 0.2s ease, gap 0.2s ease;
    }

    .feature-link:hover {
        color: var(--accent);
        gap: 10px;
    }

    .notice-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 16px;
    }

    @media (min-width: 768px) {
        .notice-grid {
            grid-template-columns: repeat(2, minmax(0, 1fr));
        }
    }

    .notice-card {
        display: flex;
        gap: 16px;
        align-items: flex-start;
        padding: 22px;
        border-radius: 14px;
        background: rgba(11, 22, 36, 0.7);
        border: 1px solid rgba(150, 215, 255, 0.14);
        border-left: 3px solid rgba(95, 210, 255, 0.4);
        transition: background 0.2s ease, border-color 0.2s ease;
    }

    .notice-card:hover {
        background: rgba(15, 29, 47, 0.8);
        border-color: rgba(95, 210, 255, 0.26);
        border-left-color: var(--brand-cyan);
    }

    .notice-card .notice-icon {
        flex: 0 0 40px;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 179, 107, 0.12);
        border: 1px solid rgba(255, 179, 107, 0.2);
        color: var(--accent);
        border-radius: 10px;
    }

    .notice-card h3 {
        margin: 0 0 6px;
        font-size: 16px;
        color: #ffffff;
        font-weight: 600;
    }

    .notice-card p {
        margin: 0;
        font-size: 14px;
        color: var(--text-soft);
        line-height: 1.75;
    }

    .faq-section {
        background: rgba(4, 11, 18, 0.45);
        border-top: 1px solid rgba(95, 210, 255, 0.08);
        border-bottom: 1px solid rgba(95, 210, 255, 0.08);
    }

    .faq-list {
        max-width: 860px;
        margin: 0 auto;
        display: grid;
        gap: 12px;
    }

    .faq-item {
        background: rgba(12, 24, 39, 0.66);
        border: 1px solid rgba(150, 215, 255, 0.15);
        border-radius: 14px;
        overflow: hidden;
        transition: border-color 0.2s ease, background 0.2s ease;
    }

    .faq-item[open] {
        border-color: rgba(95, 210, 255, 0.34);
        background: rgba(16, 31, 50, 0.8);
    }

    .faq-item summary {
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 18px 20px;
        min-height: 54px;
        font-weight: 600;
        font-size: 15px;
        color: var(--text);
        cursor: pointer;
        transition: color 0.2s ease;
    }

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

    .faq-item summary:hover {
        color: var(--brand-cyan-light);
    }

    .faq-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        flex-shrink: 0;
        border-radius: 50%;
        background: rgba(37, 199, 232, 0.1);
        border: 1px solid rgba(95, 210, 255, 0.18);
        transition: transform 0.25s ease, background 0.25s ease;
    }

    .faq-icon svg {
        width: 14px;
        height: 14px;
        color: var(--brand-cyan-light);
    }

    .faq-item[open] .faq-icon {
        transform: rotate(45deg);
        background: rgba(255, 179, 107, 0.16);
        border-color: rgba(255, 179, 107, 0.3);
    }

    .faq-answer {
        padding: 0 20px 20px;
        color: var(--text-soft);
        font-size: 15px;
        line-height: 1.8;
    }

    .cta-zone {
        position: relative;
        overflow: hidden;
        padding: 84px 0;
    }

    @media (min-width: 768px) {
        .cta-zone {
            padding: 110px 0;
        }
    }

    .cta-inner {
        position: relative;
        z-index: 2;
        border-radius: 22px;
        overflow: hidden;
        background:
            radial-gradient(600px 180px at 85% -10%, rgba(247, 123, 72, 0.22), transparent 60%),
            radial-gradient(420px 200px at 0% 120%, rgba(37, 199, 232, 0.18), transparent 60%),
            rgba(13, 25, 42, 0.82);
        border: 1px solid rgba(150, 215, 255, 0.18);
        padding: 48px 30px;
        text-align: center;
        box-shadow: var(--shadow);
    }

    @media (min-width: 768px) {
        .cta-inner {
            padding: 64px 54px;
        }
    }

    .cta-inner h2 {
        margin: 0 0 16px;
        color: #ffffff;
        font-size: clamp(1.7rem, 3vw, 2.5rem);
        line-height: 1.3;
    }

    .cta-inner p {
        max-width: 620px;
        margin: 0 auto 30px;
        color: var(--text-soft);
        font-size: 16px;
        line-height: 1.8;
    }

    .cta-btns {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px;
    }

    .footer {
        background: rgba(2, 6, 10, 0.8);
        border-top: 1px solid rgba(37, 199, 232, 0.1);
    }

    .footer-top-line {
        background: linear-gradient(90deg, transparent 0%, rgba(37, 199, 232, 0.45) 20%, rgba(255, 179, 107, 0.5) 50%, rgba(37, 199, 232, 0.45) 80%, transparent 100%);
        height: 1px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 52px 0 46px;
    }

    @media (min-width: 768px) {
        .footer-grid {
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 24px;
        }
    }

    @media (min-width: 1024px) {
        .footer-grid {
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
        }
    }

    .footer-brand {
        font-size: 20px;
        font-weight: 700;
        color: #ffffff;
        line-height: 1.4;
        display: inline-block;
        margin-bottom: 6px;
    }

    .footer-brand-small {
        color: var(--brand-cyan);
        font-size: 11px;
        letter-spacing: 0.42em;
        margin-left: 2px;
    }

    .footer-about {
        max-width: 360px;
        margin-top: 14px;
        font-size: 14px;
        color: rgba(154, 184, 214, 0.6);
        line-height: 1.8;
    }

    .footer-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 16px;
    }

    .footer-tag {
        display: inline-flex;
        align-items: center;
        min-height: 28px;
        padding: 4px 12px;
        border-radius: 999px;
        border: 1px solid rgba(95, 210, 255, 0.14);
        color: rgba(154, 184, 214, 0.55);
        font-size: 12px;
        transition: all 0.25s ease;
    }

    .footer-tag:hover {
        color: #ffffff;
        border-color: rgba(95, 210, 255, 0.36);
        background: rgba(37, 199, 232, 0.06);
    }

    .footer-tag.amber {
        border-color: rgba(255, 179, 107, 0.14);
    }

    .footer-tag.amber:hover {
        border-color: rgba(255, 179, 107, 0.34);
        background: rgba(255, 179, 107, 0.06);
    }

    .footer-heading {
        color: #ffffff;
        font-size: 15px;
        font-weight: 600;
        margin: 0 0 16px;
    }

    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
        display: grid;
        gap: 10px;
    }

    .footer-links a {
        color: rgba(154, 184, 214, 0.55);
        font-size: 14px;
        transition: color 0.2s ease;
    }

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

    .footer-status {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 12px;
        border-radius: 999px;
        background: rgba(37, 199, 232, 0.06);
        border: 1px solid rgba(95, 210, 255, 0.14);
        font-size: 13px;
        color: rgba(213, 231, 248, 0.72);
    }

    .footer-status .status-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #5FE1A1;
        box-shadow: 0 0 10px rgba(95, 225, 161, 0.5);
    }

    .footer-bottom {
        border-top: 1px solid rgba(150, 215, 255, 0.08);
        padding: 20px 0 24px;
        text-align: center;
        display: flex;
        flex-direction: column;
        gap: 7px;
        font-size: 13px;
        color: rgba(154, 184, 214, 0.5);
    }

    .footer-bottom .site-domain {
        color: rgba(154, 184, 214, 0.7);
    }

    .footer-bottom a {
        color: rgba(154, 184, 214, 0.55);
        transition: color 0.2s ease;
    }

    .footer-bottom a:hover {
        color: var(--brand-cyan-light);
    }

    .section-more-muted {
        background: rgba(4, 11, 18, 0.35);
    }

    @media (max-width: 520px) {
        .container-custom {
            padding-left: 16px;
            padding-right: 16px;
        }

        .nav-link {
            font-size: 13px;
            padding-left: 8px;
            padding-right: 8px;
        }

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