/* roulang page: index */
:root {
            --bg: #0C0D10;
            --panel: #15171B;
            --panel-hover: #1D2128;
            --gold: #C9A96A;
            --gold-light: #D9BC85;
            --green: #46B8A0;
            --text: #EDE8E1;
            --text-sub: #9A958C;
            --border: rgba(255,255,255,0.08);
            --border-input: rgba(255,255,255,0.12);
            --radius: 12px;
            --radius-sm: 6px;
            --shadow: 0 8px 32px rgba(0,0,0,0.4);
            --font: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --mono: "DIN Alternate", "Roboto Mono", "SF Mono", monospace;
            --space-section: 6rem;
            --header-h: 70px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.85;
            font-size: 1rem;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
            border-radius: var(--radius);
        }

        a {
            color: var(--gold);
            text-decoration: none;
            transition: color 250ms ease;
        }

        a:hover {
            color: var(--gold-light);
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

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

        .section-dark {
            background: #0A0B0D;
        }

        .section-subtle {
            background: rgba(255,255,255,0.015);
        }

        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-header .overline {
            display: inline-block;
            font-size: 0.8125rem;
            letter-spacing: 0.08em;
            color: var(--gold);
            text-transform: uppercase;
            margin-bottom: 12px;
            border: 1px solid rgba(201,169,106,0.25);
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(201,169,106,0.06);
        }

        .section-header h2 {
            font-size: clamp(1.625rem, 3vw, 2.5rem);
            font-weight: 400;
            letter-spacing: 0.02em;
            color: var(--text);
            line-height: 1.3;
        }

        .section-header p {
            color: var(--text-sub);
            max-width: 640px;
            margin: 16px auto 0;
        }

        /* Header & Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(12,13,16,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: background 250ms ease;
        }

        .header-inner {
            max-width: 1200px;
            height: 100%;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

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

        .brand-icon {
            width: 36px;
            height: 36px;
            border: 1.5px solid var(--gold);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 18px;
            position: relative;
            overflow: hidden;
            transition: box-shadow 250ms ease;
        }

        .brand-icon::before {
            content: '';
            position: absolute;
            width: 12px;
            height: 12px;
            border-right: 2px solid var(--gold);
            border-bottom: 2px solid var(--gold);
            transform: rotate(-45deg) translate(1px, 1px);
        }

        .brand-icon::after {
            content: '';
            position: absolute;
            width: 4px;
            height: 4px;
            background: var(--green);
            border-radius: 50%;
            right: 5px;
            top: 5px;
        }

        .brand-text {
            font-size: 1.25rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--text);
        }

        .brand-text span {
            color: var(--gold);
        }

        .main-nav {
            display: flex;
            gap: 32px;
            align-items: center;
        }

        .main-nav a {
            position: relative;
            color: var(--text-sub);
            font-size: 0.9375rem;
            letter-spacing: 0.02em;
            padding: 8px 4px;
            transition: color 250ms ease, text-shadow 250ms ease;
        }

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

        .main-nav a.active {
            color: var(--gold);
            text-shadow: 0 0 12px rgba(201,169,106,0.5);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--gold), transparent);
            box-shadow: 0 0 8px rgba(201,169,106,0.5);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-cta {
            font-size: 0.875rem;
            padding: 0.5rem 1.25rem;
            border-radius: var(--radius-sm);
            background: var(--gold);
            color: #0C0D10;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 250ms ease, box-shadow 250ms ease, transform 250ms ease;
        }

        .nav-cta:hover {
            background: var(--gold-light);
            color: #0C0D10;
            box-shadow: 0 0 24px rgba(201,169,106,0.4);
            transform: scale(0.98);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 6px;
            width: 40px;
            height: 40px;
            color: var(--text);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: border-color 250ms ease;
        }

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

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 0.875rem 2rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 250ms ease;
            border: 1px solid transparent;
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--gold);
            color: #0C0D10;
            border-color: var(--gold);
        }

        .btn-primary:hover {
            background: var(--gold-light);
            box-shadow: 0 0 24px rgba(201,169,106,0.4);
            color: #0C0D10;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border-color: rgba(255,255,255,0.3);
        }

        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
            box-shadow: 0 0 16px rgba(201,169,106,0.15);
        }

        .btn-lg {
            padding: 1rem 2.5rem;
            font-size: 1.0625rem;
        }

        .btn-sm {
            padding: 0.5rem 1.25rem;
            font-size: 0.875rem;
        }

        /* Hero */
        .hero-section {
            padding: calc(var(--header-h) + 60px) 0 80px;
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(201,169,106,0.08) 0%, transparent 65%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .hero-media {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            min-height: 440px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            transition: transform 500ms ease;
        }

        .hero-media:hover .hero-bg {
            transform: scale(1.03);
        }

        .hero-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(12,13,16,0.85) 0%, transparent 60%);
        }

        .live-badge {
            position: absolute;
            top: 18px;
            left: 18px;
            z-index: 2;
            background: rgba(201,169,106,0.15);
            border: 1px solid var(--gold);
            color: var(--gold);
            font-size: 0.75rem;
            letter-spacing: 0.14em;
            padding: 6px 16px;
            border-radius: 100px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            animation: livePulse 2s ease-in-out infinite;
        }

        .live-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--gold);
            border-radius: 50%;
            animation: dotBlink 1s ease-in-out infinite;
        }

        @keyframes livePulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(201,169,106,0.3); }
            50% { box-shadow: 0 0 14px 2px rgba(201,169,106,0.2); }
        }

        @keyframes dotBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero-info {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-info h1 {
            font-size: clamp(2.25rem, 5vw, 4rem);
            font-weight: 200;
            letter-spacing: 0.04em;
            line-height: 1.2;
            color: var(--text);
        }

        .hero-info h1 .highlight {
            color: var(--gold);
            text-shadow: 0 0 30px rgba(201,169,106,0.3);
        }

        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 460px;
        }

        .countdown-box {
            margin-top: 8px;
            padding: 24px 28px;
            background: rgba(255,255,255,0.025);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            backdrop-filter: blur(6px);
        }

        .countdown-box h3 {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-sub);
            letter-spacing: 0.05em;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .countdown-box h3 i {
            color: var(--gold);
        }

        .countdown-grid {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .time-box {
            background: #101215;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 14px 10px;
            text-align: center;
            flex: 1;
            min-width: 0;
            transition: border-color 250ms ease;
        }

        .time-box:hover {
            border-color: rgba(201,169,106,0.4);
        }

        .time-box .num {
            font-family: var(--mono);
            font-size: clamp(2rem, 4vw, 3rem);
            color: var(--text);
            line-height: 1;
            display: block;
            font-weight: 500;
            letter-spacing: 0.02em;
        }

        .time-box .label {
            font-size: 0.75rem;
            color: var(--text-sub);
            display: block;
            margin-top: 8px;
            letter-spacing: 0.08em;
        }

        .time-sep {
            font-family: var(--mono);
            font-size: 1.75rem;
            color: var(--gold);
            font-weight: 200;
        }

        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem 1.75rem;
            transition: transform 250ms ease, border-color 250ms ease, box-shadow 250ms ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(201,169,106,0.5);
            box-shadow: var(--shadow);
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--gold), transparent);
            opacity: 0;
            transition: opacity 250ms ease;
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: rgba(70,184,160,0.12);
            border: 1px solid rgba(70,184,160,0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--green);
            margin-bottom: 20px;
        }

        .feature-card .feature-num {
            position: absolute;
            top: 20px;
            right: 24px;
            font-family: var(--mono);
            font-size: 0.875rem;
            color: rgba(201,169,106,0.5);
            letter-spacing: 0.1em;
        }

        .feature-card h3 {
            font-size: 1.375rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            color: var(--text);
        }

        .feature-card p {
            color: var(--text-sub);
            font-size: 0.9375rem;
            margin-bottom: 18px;
            line-height: 1.8;
        }

        .card-link {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--gold);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 250ms ease;
        }

        .card-link:hover {
            gap: 10px;
            color: var(--gold-light);
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item {
            padding: 32px 16px;
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: border-color 250ms ease, transform 250ms ease;
        }

        .stat-item:hover {
            border-color: rgba(201,169,106,0.35);
            transform: translateY(-2px);
        }

        .stat-num {
            font-family: var(--mono);
            font-size: clamp(2rem, 3vw, 2.75rem);
            color: var(--gold);
            font-weight: 500;
            line-height: 1.2;
            display: block;
        }

        .stat-label {
            color: var(--text-sub);
            font-size: 0.875rem;
            margin-top: 8px;
            display: block;
            letter-spacing: 0.04em;
        }

        /* Process */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .process-card {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            transition: border-color 250ms ease, transform 250ms ease;
        }

        .process-card:hover {
            border-color: rgba(201,169,106,0.4);
            transform: translateY(-2px);
        }

        .process-card .step-num {
            font-family: var(--mono);
            font-size: 0.8125rem;
            color: var(--gold);
            letter-spacing: 0.1em;
            margin-bottom: 8px;
            display: block;
        }

        .process-card .step-arrow {
            position: absolute;
            top: 32px;
            right: -16px;
            color: rgba(201,169,106,0.4);
            font-size: 18px;
            z-index: 2;
        }

        .process-card:last-child .step-arrow {
            display: none;
        }

        .process-card h3 {
            font-size: 1.125rem;
            font-weight: 500;
            margin-bottom: 8px;
        }

        .process-card p {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* News */
        .news-layout {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 24px;
        }

        .news-main {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: transform 250ms ease, border-color 250ms ease, box-shadow 250ms ease;
        }

        .news-main:hover {
            border-color: rgba(201,169,106,0.45);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .news-main h3 {
            font-size: 1.5rem;
            font-weight: 500;
            line-height: 1.4;
            color: var(--text);
        }

        .news-main p {
            color: var(--text-sub);
            font-size: 0.9375rem;
            line-height: 1.85;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.8125rem;
            color: var(--text-sub);
        }

        .news-tag {
            display: inline-block;
            background: rgba(201,169,106,0.12);
            border: 1px solid rgba(201,169,106,0.3);
            color: var(--gold);
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: 100px;
            letter-spacing: 0.04em;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-item {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: border-color 250ms ease, transform 250ms ease;
            flex: 1;
        }

        .news-item:hover {
            border-color: rgba(201,169,106,0.35);
            transform: translateY(-2px);
        }

        .news-item h4 {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item p {
            font-size: 0.8125rem;
            color: var(--text-sub);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.7;
        }

        .empty-state {
            background: var(--panel);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 60px 20px;
            text-align: center;
            color: var(--text-sub);
            font-size: 1rem;
        }

        /* Subscribe */
        .subscribe-panel {
            background: linear-gradient(135deg, rgba(12,13,16,0.95) 0%, rgba(21,23,27,0.95) 100%);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .subscribe-panel::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(201,169,106,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .subscribe-panel::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(70,184,160,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .subscribe-panel h2 {
            font-size: clamp(1.625rem, 3vw, 2.25rem);
            font-weight: 400;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .subscribe-panel p {
            color: var(--text-sub);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 520px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 0;
            background: #101215;
            border: 1px solid var(--border-input);
            border-radius: 8px;
            padding: 0.875rem 1.25rem;
            color: var(--text);
            font-size: 0.9375rem;
            outline: none;
            transition: border-color 250ms ease, box-shadow 250ms ease;
        }

        .subscribe-form input[type="email"]:focus {
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(201,169,106,0.15);
        }

        .subscribe-form input[type="email"]::placeholder {
            color: rgba(154,149,140,0.7);
        }

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

        .replay-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--panel);
            border: 1px solid var(--border);
            transition: transform 250ms ease, box-shadow 250ms ease, border-color 250ms ease;
        }

        .replay-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(201,169,106,0.4);
        }

        .replay-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.6);
            transition: filter 250ms ease, transform 500ms ease;
        }

        .replay-card:hover img {
            filter: brightness(0.85);
            transform: scale(1.04);
        }

        .replay-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: linear-gradient(to top, rgba(12,13,16,0.7) 0%, transparent 50%, rgba(12,13,16,0.25) 100%);
            transition: background 250ms ease;
        }

        .replay-play {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(201,169,106,0.8);
            border: none;
            color: #0C0D10;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            transform: scale(0.8);
            transition: opacity 250ms ease, transform 250ms ease;
        }

        .replay-card:hover .replay-play {
            opacity: 1;
            transform: scale(1);
        }

        .replay-replay-text {
            position: absolute;
            bottom: 16px;
            left: 20px;
            color: rgba(255,255,255,0.9);
            font-size: 0.9375rem;
            font-weight: 500;
            z-index: 2;
        }

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

        .custom-accordion {
            list-style: none;
        }

        .custom-accordion .accordion-item {
            background: var(--panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 250ms ease;
        }

        .custom-accordion .accordion-item:hover {
            border-color: rgba(201,169,106,0.3);
        }

        .custom-accordion .accordion-item.is-active {
            border-color: rgba(201,169,106,0.5);
        }

        .custom-accordion .accordion-title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            color: var(--text);
            font-size: 1rem;
            font-weight: 500;
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color 250ms ease;
            letter-spacing: 0.01em;
        }

        .custom-accordion .accordion-title:hover {
            color: var(--gold);
        }

        .custom-accordion .accordion-title::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8125rem;
            color: var(--gold);
            transition: transform 250ms ease;
        }

        .custom-accordion .accordion-item.is-active .accordion-title::after {
            transform: rotate(180deg);
        }

        .custom-accordion .accordion-content {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-sub);
            font-size: 0.9375rem;
            line-height: 1.8;
            border-top: 1px solid transparent;
            background: transparent;
        }

        .custom-accordion .accordion-item.is-active .accordion-content {
            border-top-color: var(--border);
        }

        .custom-accordion .accordion-content a {
            color: var(--gold);
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.15;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
            padding: 60px 40px;
            background: rgba(12,13,16,0.6);
            border: 1px solid var(--border);
            border-radius: 20px;
            backdrop-filter: blur(8px);
        }

        .cta-inner h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.75rem);
            font-weight: 300;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: var(--text-sub);
            margin-bottom: 28px;
            font-size: 1.0625rem;
        }

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

        /* Footer */
        .site-footer {
            background: #0A0B0D;
            border-top: 1px solid var(--border);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
        }

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

        .footer-links a {
            color: var(--text-sub);
            font-size: 0.875rem;
            line-height: 2.2;
            transition: color 250ms ease;
        }

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

        .footer-contact p {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 2.2;
            margin-bottom: 0;
        }

        .footer-contact i {
            color: var(--gold);
            width: 20px;
            margin-right: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
            font-size: 0.75rem;
            color: rgba(154,149,140,0.8);
        }

        .footer-bottom a {
            color: rgba(154,149,140,0.8);
        }

        .footer-bottom a:hover {
            color: var(--gold);
        }

        /* Mobile menu */
        .main-nav.open {
            display: flex;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                gap: 32px;
                grid-template-columns: 1fr;
            }

            .hero-media {
                min-height: 320px;
            }

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

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

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

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

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

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

        @media (max-width: 768px) {
            :root {
                --space-section: 3.5rem;
            }

            .nav-toggle {
                display: flex;
            }

            .main-nav {
                display: none;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(12,13,16,0.98);
                flex-direction: column;
                gap: 0;
                padding: 12px 20px;
                border-bottom: 1px solid var(--border);
                z-index: 999;
            }

            .main-nav a {
                width: 100%;
                padding: 14px 8px;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }

            .main-nav a:last-child {
                border-bottom: none;
            }

            .main-nav a.active::after {
                left: 0;
                width: 60px;
            }

            .nav-cta {
                display: none;
            }

            .hero-section {
                padding-top: calc(var(--header-h) + 40px);
                min-height: 0;
            }

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 0 16px;
            }

            .hero-media {
                min-height: 240px;
            }

            .hero-info h1 {
                font-size: clamp(1.875rem, 7vw, 2.5rem);
            }

            .countdown-grid {
                gap: 6px;
            }

            .time-box {
                padding: 12px 6px;
            }

            .time-box .num {
                font-size: clamp(1.5rem, 5vw, 2rem);
            }

            .time-sep {
                font-size: 1.25rem;
            }

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

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

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

            .process-card .step-arrow {
                display: none;
            }

            .subscribe-panel {
                padding: 40px 20px;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-form .btn {
                width: 100%;
            }

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

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

            .cta-inner {
                padding: 40px 20px;
            }

            .btn-group .btn {
                width: 100%;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .header-inner {
                padding: 0 16px;
            }

            .brand-text {
                font-size: 1.1rem;
            }

            .section-header {
                margin-bottom: 2rem;
            }

            .section-header h2 {
                font-size: 1.375rem;
            }

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

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

            .stat-num {
                font-size: 1.625rem;
            }

            .news-main {
                padding: 1.5rem;
            }

            .news-item {
                padding: 16px 18px;
            }

            .subscribe-panel {
                padding: 32px 16px;
            }

            .custom-accordion .accordion-title {
                padding: 1rem;
                font-size: 0.9375rem;
            }

            .custom-accordion .accordion-content {
                padding: 0 1rem 1rem;
            }

            .footer-bottom {
                padding: 16px 12px;
            }
        }

        /* Accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
  --bg: #0C0D10;
  --surface: #15171B;
  --surface-hover: #1D2128;
  --gold: #C9A96A;
  --teal: #46B8A0;
  --text: #EDE8E1;
  --text-dim: #9A958C;
  --line: rgba(255,255,255,0.08);
  --radius: 12px;
  --transition: 250ms ease;
  --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-mono: "DIN Alternate", "Roboto Mono", "SFMono-Regular", Consolas, monospace;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-family);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img {
  max-width: 100%;
  display: block;
  border: 0;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition), opacity var(--transition);
}
button {
  font-family: var(--font-family);
}
ul, ol {
  list-style: none;
}
main {
  overflow: hidden;
}
.grid-container {
  max-width: 1200px;
  padding-left: 16px;
  padding-right: 16px;
}
@media (min-width: 641px) {
  .grid-container {
    padding-left: 24px;
    padding-right: 24px;
  }
}
@media (min-width: 1025px) {
  .grid-container {
    padding-left: 32px;
    padding-right: 32px;
  }
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.875rem 2rem;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  line-height: 1.4;
  text-align: center;
}
.btn-primary {
  background: var(--gold);
  color: #1a1712;
}
.btn-primary:hover {
  background: #d8b877;
  color: #1a1712;
  box-shadow: 0 0 24px rgba(201, 169, 106, 0.4);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.3);
}
.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  box-shadow: 0 0 16px rgba(201, 169, 106, 0.2);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: scale(0.98);
}
.btn:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}
.section-tag {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  font-weight: 500;
}
.section-head {
  margin-bottom: 2.75rem;
}
.section-head h2 {
  font-size: clamp(1.625rem, 3vw, 2.5rem);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--text);
}
.section-desc {
  color: var(--text-dim);
  margin-top: 0.75rem;
  max-width: 680px;
  font-size: 1rem;
}
@media (max-width: 640px) {
  .section-head {
    margin-bottom: 2rem;
  }
}

/* ============ Header ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 70px;
  background: rgba(12, 13, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 1.125rem;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.brand-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: inline-block;
  background: linear-gradient(135deg, var(--gold), #e8cf9a);
  border-radius: 8px;
  position: relative;
}
.brand-icon::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 12px;
  width: 8px;
  height: 18px;
  background: #0C0D10;
  border-radius: 2px;
  box-shadow: 0 0 6px rgba(12, 13, 16, 0.4);
}
.brand-text {
  color: var(--text);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a {
  position: relative;
  display: inline-block;
  font-size: 0.9375rem;
  color: var(--text-dim);
  padding: 24px 0;
  line-height: 1.4;
}
.main-nav a:hover {
  color: var(--gold);
}
.main-nav a.active {
  color: var(--gold);
  text-shadow: 0 0 12px rgba(201, 169, 106, 0.45);
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-cta {
  display: inline-block;
  background: var(--gold);
  color: #1a1712;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-cta:hover {
  background: #d8b877;
  box-shadow: 0 0 20px rgba(201, 169, 106, 0.4);
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
}
.nav-toggle:hover {
  color: var(--gold);
}

/* ============ Hero ============ */
.page-hero {
  position: relative;
  padding: 150px 0 90px;
  min-height: 540px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 13, 16, 0.78) 0%, rgba(12, 13, 16, 0.58) 50%, rgba(12, 13, 16, 0.92) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 16px;
  width: 100%;
}
.hero-breadcrumb {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}
.hero-breadcrumb a {
  color: var(--text-dim);
}
.hero-breadcrumb a:hover {
  color: var(--gold);
}
.hero-breadcrumb span {
  color: rgba(255, 255, 255, 0.25);
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  border: 1px solid rgba(201, 169, 106, 0.3);
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(201, 169, 106, 0.08);
  margin-bottom: 24px;
}
.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 8px rgba(201, 169, 106, 0.8);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.page-hero h1 {
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 200;
  letter-spacing: 0.04em;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text);
}
.hero-sub {
  color: var(--text-dim);
  font-size: 1.125rem;
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-glow {
  position: absolute;
  bottom: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 160px;
  background: radial-gradient(ellipse, rgba(201, 169, 106, 0.12), transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ============ Section base ============ */
.section {
  padding: 5rem 0;
}
.section-alt {
  background: #0F1115;
}
@media (max-width: 640px) {
  .section {
    padding: 3.5rem 0;
  }
}

/* ============ Steps ============ */
.step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  height: 100%;
  position: relative;
  transition: all var(--transition);
  overflow: hidden;
}
.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 1.5rem;
  right: 1.5rem;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 169, 106, 0.1));
}
.step-card:hover {
  border-color: rgba(201, 169, 106, 0.5);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.step-num {
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 300;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 169, 106, 0.6);
  margin-bottom: 1.25rem;
  display: block;
}
.step-card h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  color: var(--text);
}
.step-card p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  margin-bottom: 0;
  line-height: 1.7;
}

/* ============ Methods ============ */
.method-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.method-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}
.method-item:hover {
  border-color: rgba(201, 169, 106, 0.4);
  background: var(--surface-hover);
  transform: translateX(4px);
}
.method-item + .method-item {
  margin-top: 16px;
}
.method-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 10px;
  background: rgba(70, 184, 160, 0.1);
  border: 1px solid rgba(70, 184, 160, 0.2);
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}
.method-item h3 {
  font-size: 1.0625rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
  color: var(--text);
}
.method-item p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  margin-bottom: 0;
  line-height: 1.7;
}
.method-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  position: relative;
}
.method-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(12, 13, 16, 0.55) 100%);
  pointer-events: none;
}
.method-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 360px;
}
.method-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(12, 13, 16, 0.7);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(201, 169, 106, 0.3);
  color: var(--gold);
  font-size: 0.8125rem;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

/* ============ Preparation ============ */
.prep-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  height: 100%;
  text-align: center;
  transition: all var(--transition);
}
.prep-card:hover {
  border-color: rgba(201, 169, 106, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}
.prep-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: rgba(201, 169, 106, 0.08);
  border: 1px solid rgba(201, 169, 106, 0.2);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.0625rem;
}
.prep-card h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.prep-card p {
  color: var(--text-dim);
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: 0;
}

/* ============ Security ============ */
.security-section {
  position: relative;
  padding: 5rem 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
.security-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(12, 13, 16, 0.94) 0%, rgba(12, 13, 16, 0.82) 100%);
}
.security-section .grid-container {
  position: relative;
  z-index: 1;
}
.security-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 760px;
}
.security-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  background: rgba(21, 23, 27, 0.75);
  border: 1px solid var(--line);
  border-radius: 10px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: border-color var(--transition);
}
.security-item:hover {
  border-color: rgba(201, 169, 106, 0.35);
}
.security-item i {
  color: var(--teal);
  margin-top: 5px;
  flex-shrink: 0;
  width: 18px;
  font-size: 0.9375rem;
}
.security-item strong {
  display: block;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 2px;
}
.security-item p {
  color: var(--text-dim);
  font-size: 0.875rem;
  margin-bottom: 0;
  line-height: 1.7;
}
@media (max-width: 640px) {
  .security-section {
    background-attachment: scroll;
    padding: 3.5rem 0;
  }
}

/* ============ Benefits ============ */
.benefit-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  height: 100%;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.benefit-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transition: width var(--transition);
}
.benefit-card:hover::after {
  width: 80%;
}
.benefit-card:hover {
  border-color: rgba(201, 169, 106, 0.45);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.benefit-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, rgba(201, 169, 106, 0.15), rgba(201, 169, 106, 0.04));
  border: 1px solid rgba(201, 169, 106, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  color: var(--gold);
}
.benefit-card h3 {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
  color: var(--text);
}
.benefit-card p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  margin-bottom: 0;
  line-height: 1.7;
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open {
  border-color: rgba(201, 169, 106, 0.35);
}
.faq-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
  user-select: none;
}
.faq-item-header:hover {
  color: var(--gold);
}
.faq-arrow {
  color: var(--gold);
  font-size: 0.875rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}
.faq-item-body {
  display: none;
  padding: 0 1.5rem 1.5rem;
  color: var(--text-dim);
  font-size: 0.9375rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  line-height: 1.75;
}
.faq-item.open .faq-item-body {
  display: block;
  animation: fadeInDown 280ms ease;
}
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============ CTA ============ */
.cta-section {
  padding: 5rem 0;
}
.cta-box {
  max-width: 840px;
  margin: 0 auto;
  text-align: center;
  background: var(--surface);
  border: 1px solid rgba(201, 169, 106, 0.2);
  border-radius: 16px;
  padding: 3.5rem 2rem;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.cta-box::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 120px;
  background: radial-gradient(ellipse, rgba(201, 169, 106, 0.1), transparent 70%);
  pointer-events: none;
}
.cta-box h2 {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 400;
  margin-bottom: 1rem;
  color: var(--text);
  letter-spacing: 0.02em;
}
.cta-box p {
  color: var(--text-dim);
  margin-bottom: 2rem;
  font-size: 1rem;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
@media (max-width: 640px) {
  .cta-box {
    padding: 2.5rem 1.25rem;
    border-radius: 12px;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* ============ Footer ============ */
.site-footer {
  background: #0A0B0D;
  border-top: 1px solid var(--line);
  padding: 3.5rem 0 0;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 2.5rem;
}
.footer-grid > div {
  flex: 1;
  min-width: 220px;
}
.footer-brand .brand {
  margin-bottom: 1rem;
  display: inline-flex;
}
.footer-brand p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  max-width: 340px;
  margin-bottom: 0;
  line-height: 1.7;
}
.footer-title {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--text);
}
.footer-links li {
  margin-bottom: 0.25rem;
}
.footer-links a {
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 2.2;
  display: inline-block;
}
.footer-links a:hover {
  color: var(--gold);
}
.footer-contact p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  margin-bottom: 0.625rem;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.footer-contact i {
  color: var(--gold);
  margin-top: 6px;
  width: 16px;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 1.25rem 0;
  text-align: center;
}
.footer-bottom p {
  color: var(--text-dim);
  font-size: 0.8125rem;
  margin-bottom: 0;
}
.footer-bottom a {
  color: var(--text-dim);
}
.footer-bottom a:hover {
  color: var(--gold);
}
@media (max-width: 640px) {
  .footer-grid {
    flex-direction: column;
    gap: 28px;
  }
}

/* ============ Responsive Header ============ */
@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(12, 13, 16, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 14px 0;
    width: 100%;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }
  .main-nav a:last-child {
    border-bottom: none;
  }
  .main-nav a.active::after {
    left: 0;
    right: auto;
    width: 60px;
    height: 2px;
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .nav-toggle.active i::before {
    content: '\f00d';
  }
  .brand-text {
    font-size: 1rem;
  }
  .page-hero {
    padding: 120px 0 60px;
    min-height: auto;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .method-img img {
    min-height: 240px;
  }
}

@media (max-width: 520px) {
  .header-inner {
    padding: 0 12px;
    gap: 8px;
  }
  .brand-text {
    font-size: 0.9375rem;
  }
  .nav-cta {
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
  }
  .nav-toggle {
    padding: 6px;
  }
  .section {
    padding: 3rem 0;
  }
  .step-card {
    padding: 1.5rem 1.25rem;
  }
  .method-item {
    padding: 1.25rem;
  }
  .prep-card {
    padding: 1.5rem 1.25rem;
  }
  .benefit-card {
    padding: 1.75rem 1.25rem;
  }
  .faq-item-header {
    padding: 1rem 1.25rem;
  }
  .faq-item-body {
    padding: 0 1.25rem 1.25rem;
  }
}

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --bg: #0C0D10;
            --surface: #15171B;
            --surface-hover: #1D2128;
            --gold: #C9A96A;
            --gold-light: #DCC189;
            --green: #46B8A0;
            --text-primary: #EDE8E1;
            --text-secondary: #9A958C;
            --border: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(201, 169, 106, 0.45);
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: 250ms ease;
            --container: 1200px;
            --header-h: 70px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg);
            color: var(--text-primary);
            font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 1rem;
            line-height: 1.85;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        a:hover {
            color: var(--gold-light);
        }

        a:focus,
        button:focus,
        input:focus {
            outline: 2px solid rgba(201, 169, 106, 0.6);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        button {
            cursor: pointer;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 4%;
        }

        .container.narrow {
            max-width: 760px;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-h);
            background: rgba(12, 13, 16, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
        }

        .header-inner {
            max-width: var(--container);
            height: 100%;
            margin: 0 auto;
            padding: 0 4%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            color: var(--text-primary);
            font-size: 1.125rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .brand:hover {
            color: var(--text-primary);
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            display: inline-block;
            border: 2px solid var(--gold);
            border-radius: 8px;
            position: relative;
            background: linear-gradient(135deg, rgba(201, 169, 106, 0.2), transparent);
            flex-shrink: 0;
        }

        .brand-icon::before {
            content: "";
            position: absolute;
            inset: 24%;
            border: 1.5px solid var(--gold);
            border-top: none;
            border-right: none;
            transform: rotate(-45deg);
            border-radius: 2px 0 4px 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 2rem;
        }

        .main-nav a {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            font-weight: 500;
            position: relative;
            padding: 0.5rem 0;
            background: none;
            border: none;
            transition: color var(--transition);
        }

        .main-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--gold), transparent);
            opacity: 0;
            transform: scaleX(0.5);
            transition: opacity var(--transition), transform var(--transition);
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--gold);
        }

        .main-nav a.active::after {
            opacity: 1;
            transform: scaleX(1);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .nav-cta {
            background: var(--gold);
            color: #0C0D10;
            font-weight: 600;
            padding: 0.625rem 1.5rem;
            border-radius: 6px;
            font-size: 0.875rem;
            border: none;
            display: inline-block;
            transition: background var(--transition), box-shadow var(--transition), transform 200ms ease;
        }

        .nav-cta:hover {
            background: var(--gold-light);
            color: #0C0D10;
            box-shadow: 0 0 24px rgba(201, 169, 106, 0.4);
            transform: scale(0.98);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: 8px;
            font-size: 1rem;
            align-items: center;
            justify-content: center;
            transition: border-color var(--transition), color var(--transition);
        }

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

        /* ===== 文章头部 ===== */
        .article-hero {
            padding-top: calc(var(--header-h) + 3.5rem);
            padding-bottom: 3rem;
            background: linear-gradient(180deg, rgba(201, 169, 106, 0.06), transparent 40%);
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

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

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

        .breadcrumb .sep {
            opacity: 0.5;
        }

        .breadcrumb .current {
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-hero h1 {
            font-size: clamp(1.75rem, 3.5vw, 2.75rem);
            font-weight: 300;
            line-height: 1.4;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 1.25rem;
            max-width: 900px;
        }

        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .post-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .post-meta i {
            color: var(--gold);
        }

        .hero-line {
            width: 48px;
            height: 2px;
            background: linear-gradient(90deg, var(--gold), transparent);
            margin-top: 1.5rem;
        }

        /* ===== 正文区域 ===== */
        .article-body {
            padding: 3rem 0 4rem;
        }

        .article-content {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text-primary);
        }

        .article-content > *:first-child {
            margin-top: 0;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--text-primary);
            margin: 2.2em 0 0.8em;
            line-height: 1.45;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 500;
            padding-bottom: 0.5em;
            border-bottom: 1px solid var(--border);
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 500;
        }

        .article-content h4 {
            font-size: 1.0625rem;
            font-weight: 500;
            color: var(--gold);
        }

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

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5em 1.25em;
            color: var(--text-primary);
        }

        .article-content ul li {
            list-style: disc;
            margin-bottom: 0.5em;
        }

        .article-content ol li {
            list-style: decimal;
            margin-bottom: 0.5em;
        }

        .article-content blockquote {
            margin: 2em 0;
            padding: 1rem 1.5rem;
            border-left: 4px solid var(--gold);
            background: var(--surface);
            border-radius: 0 8px 8px 0;
            color: var(--text-secondary);
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: 10px;
            margin: 2em auto;
            box-shadow: var(--shadow);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 2em 0;
            font-size: 0.9375rem;
        }

        .article-content table th,
        .article-content table td {
            border: 1px solid var(--border);
            padding: 0.75rem 1rem;
            text-align: left;
        }

        .article-content table th {
            background: var(--surface);
            color: var(--text-primary);
            font-weight: 500;
        }

        .article-content pre {
            background: var(--surface);
            padding: 1.25rem;
            border-radius: 8px;
            overflow-x: auto;
            margin-bottom: 1.5em;
            color: var(--text-primary);
            font-size: 0.875rem;
        }

        .article-content a {
            color: var(--gold);
            border-bottom: 1px solid rgba(201, 169, 106, 0.3);
        }

        .article-content a:hover {
            color: var(--gold-light);
            border-bottom-color: var(--gold-light);
        }

        .article-content hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 2.5em 0;
        }

        /* ===== 文章底部 ===== */
        .post-footer-section {
            padding: 2rem 0 4rem;
            border-top: 1px solid var(--border);
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            margin-bottom: 2rem;
            transition: color var(--transition), gap var(--transition);
        }

        .back-link:hover {
            color: var(--gold);
            gap: 0.75rem;
        }

        .post-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-top: 1rem;
        }

        .post-nav-link {
            display: block;
            padding: 1.5rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            color: var(--text-primary);
            transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        .post-nav-link:hover {
            border-color: var(--border-gold);
            color: var(--text-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .post-nav-link span {
            display: block;
            font-size: 0.8125rem;
            color: var(--text-secondary);
            margin-bottom: 0.375rem;
            letter-spacing: 0.08em;
        }

        .post-nav-placeholder {
            display: block;
            height: 100%;
        }

        /* ===== 相关资讯 ===== */
        .related-posts {
            padding: 4rem 0 3rem;
            border-top: 1px solid var(--border);
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent 60%);
        }

        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 2.5rem;
        }

        .section-head h2 {
            font-size: clamp(1.625rem, 3vw, 2.125rem);
            font-weight: 400;
            letter-spacing: 0.03em;
            position: relative;
            padding-bottom: 0.5rem;
        }

        .section-head h2::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 48px;
            height: 2px;
            background: linear-gradient(90deg, var(--gold), transparent);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

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

        .related-card:hover {
            border-color: var(--border-gold);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .related-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--surface-hover);
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

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

        .related-card-body {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .related-card-body h3 {
            font-size: 1.0625rem;
            font-weight: 500;
            line-height: 1.55;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            font-size: 0.875rem;
            color: var(--gold);
            border-bottom: none;
            transition: gap var(--transition), color var(--transition);
        }

        .card-link:hover {
            gap: 0.625rem;
            color: var(--gold-light);
        }

        /* ===== 未找到 ===== */
        .not-found-section {
            min-height: 60vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 4rem 0;
        }

        .not-found {
            text-align: center;
            padding: 3rem 1rem;
        }

        .not-found-icon {
            font-size: 3rem;
            color: var(--gold);
            display: block;
            margin-bottom: 1rem;
        }

        .not-found h1 {
            font-size: 1.75rem;
            font-weight: 400;
            margin-bottom: 0.875rem;
        }

        .not-found p {
            color: var(--text-secondary);
            max-width: 420px;
            margin: 0 auto 1.75rem;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-block;
            padding: 0.875rem 2rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.9375rem;
            line-height: 1;
            text-align: center;
            cursor: pointer;
            border: none;
            transition: background var(--transition), box-shadow var(--transition), transform 200ms ease, border-color var(--transition), color var(--transition);
        }

        .btn-primary {
            background: var(--gold);
            color: #0C0D10;
        }

        .btn-primary:hover {
            background: var(--gold-light);
            color: #0C0D10;
            box-shadow: 0 0 24px rgba(201, 169, 106, 0.4);
        }

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

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
        }

        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
            box-shadow: 0 0 16px rgba(201, 169, 106, 0.2);
        }

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

        /* ===== CTA 区 ===== */
        .cta-section {
            padding: 5rem 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 640px;
            height: 320px;
            background: radial-gradient(ellipse, rgba(201, 169, 106, 0.1), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: clamp(1.625rem, 3vw, 2.375rem);
            font-weight: 400;
            letter-spacing: 0.03em;
            margin-bottom: 1rem;
        }

        .cta-inner p {
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 2rem;
            font-size: 0.9375rem;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* ===== FAQ 区 ===== */
        .faq-section {
            padding: 5rem 0;
        }

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

        .faq-section .section-head h2::after {
            left: 50%;
            transform: translateX(-50%);
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--surface);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: border-color var(--transition);
        }

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

        .faq-item summary {
            padding: 1.25rem 1.5rem;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            color: var(--text-primary);
            transition: color var(--transition);
        }

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

        .faq-item summary:hover {
            color: var(--gold);
        }

        .faq-item .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            transition: transform 300ms ease;
        }

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

        .faq-item .faq-body {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0A0B0D;
            border-top: 1px solid var(--border);
            padding: 3rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 2.5rem;
        }

        .footer-brand .brand {
            font-size: 1.125rem;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            margin-top: 1rem;
            max-width: 340px;
            line-height: 1.8;
        }

        .footer-title {
            font-size: 0.9375rem;
            font-weight: 500;
            letter-spacing: 0.06em;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .footer-links {
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            line-height: 2.2;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.875rem;
            transition: color var(--transition);
        }

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

        .footer-contact p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            margin-bottom: 0.625rem;
            display: flex;
            align-items: center;
            gap: 0.625rem;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 1.25rem 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.8125rem;
            color: var(--text-secondary);
        }

        .footer-bottom a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: var(--gold);
        }

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

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

        @media (max-width: 640px) {
            .main-nav {
                display: none;
            }

            .main-nav.open {
                display: flex;
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(12, 13, 16, 0.95);
                backdrop-filter: blur(12px);
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 4%;
                border-bottom: 1px solid var(--border);
                gap: 0.5rem;
                z-index: 999;
            }

            .main-nav a {
                display: block;
                width: 100%;
                padding: 0.75rem 0;
                font-size: 1rem;
            }

            .nav-toggle {
                display: flex;
            }

            .article-hero {
                padding-top: calc(var(--header-h) + 2.5rem);
                padding-bottom: 2rem;
            }

            .article-body {
                padding: 2rem 0 3rem;
            }

            .post-nav {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

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

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

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

            .faq-item summary {
                padding: 1rem 1.125rem;
                font-size: 0.9375rem;
            }

            .faq-item .faq-body {
                padding: 0 1.125rem 1.125rem;
                font-size: 0.875rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .section-head {
                margin-bottom: 2rem;
            }
        }