/* roulang page: index */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .led-text {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            text-shadow: 0 0 12px rgba(47, 191, 113, 0.8);
            letter-spacing: 0.04em;
        }

        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }

        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

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

        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }

        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }

        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }

        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }

        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }

        .section-padding {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding-top: 80px;
                padding-bottom: 80px;
            }
        }

        @media (min-width: 1024px) {
            .section-padding {
                padding-top: 96px;
                padding-bottom: 96px;
            }
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            border-radius: var(--radius-full);
            padding: 6px 16px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            border: 1px solid transparent;
        }

        .badge-green {
            background: rgba(47, 191, 113, 0.1);
            color: #2FBF71;
            border-color: rgba(47, 191, 113, 0.3);
        }

        .badge-orange {
            background: rgba(255, 107, 53, 0.08);
            color: #E85A2A;
            border-color: rgba(255, 107, 53, 0.3);
        }

        .badge-dark {
            background: rgba(255, 255, 255, 0.08);
            color: #F5F5F3;
            border-color: rgba(255, 255, 255, 0.15);
        }

        .header-nav {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid #2E2E33;
            min-height: 60px;
            display: flex;
            align-items: center;
        }

        .logo-text {
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 0.01em;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #2FBF71;
            box-shadow: 0 0 8px rgba(47, 191, 113, 0.8);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.3);
            }
        }

        .hero-section {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-image: url('/assets/images/6d6f369745d28662.webp');
            isolation: isolate;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, rgba(26, 26, 30, 0.92) 0%, rgba(26, 26, 30, 0.78) 45%, rgba(26, 26, 30, 0.55) 100%);
            z-index: -1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 60%, rgba(26, 26, 30, 0.7) 100%);
            z-index: -1;
        }

        @media (max-width: 767px) {
            .hero-section {
                min-height: 480px;
            }
            .hero-section::before {
                background: rgba(26, 26, 30, 0.85);
            }
        }

        .hero-title {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin: 0 0 20px 0;
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 2.6rem;
            }
        }
        @media (min-width: 1024px) {
            .hero-title {
                font-size: 3rem;
            }
        }

        .hero-subtitle {
            font-size: 1rem;
            color: #E0E0DC;
            line-height: 1.8;
            max-width: 720px;
            margin: 0 0 28px 0;
        }

        @media (min-width: 768px) {
            .hero-subtitle {
                font-size: 1.05rem;
            }
        }

        .led-display-box {
            background: rgba(26, 26, 30, 0.82);
            border: 2px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 14px 22px;
            display: inline-flex;
            align-items: center;
            gap: 16px;
            box-shadow: 0 0 24px rgba(47, 191, 113, 0.1);
            backdrop-filter: blur(4px);
        }

        .metric-card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .metric-card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
        }

        .metric-card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .metric-card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
        }

        .metric-number {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.02em;
        }

        @media (min-width: 768px) {
            .metric-number {
                font-size: 2.5rem;
            }
        }
        @media (min-width: 1024px) {
            .metric-number {
                font-size: 2.8rem;
            }
        }

        .faq-item {
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            padding: 0;
            margin-bottom: 12px;
            background: #FFFFFF;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-item[open] {
            border-color: rgba(47, 191, 113, 0.4);
            box-shadow: var(--shadow-md);
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 0.98rem;
            display: flex;
            align-items: center;
            gap: 12px;
            color: #1A1A1E;
            transition: color 0.2s ease;
            user-select: none;
        }

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

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            font-size: 1.1rem;
            color: #2FBF71;
            font-weight: 700;
            transition: transform 0.25s ease;
            width: 20px;
            text-align: center;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            color: #FF6B35;
        }

        .faq-item summary:hover {
            color: #E85A2A;
        }

        .faq-content {
            padding: 0 24px 20px 24px;
            color: #2B2B2F;
            line-height: 1.85;
            font-size: 0.93rem;
        }

        .form-input {
            width: 100%;
            border: 1.5px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 12px 16px;
            background: #FFFFFF;
            color: #1A1A1E;
            font-size: 0.95rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            outline: none;
        }

        .form-input:focus {
            border-color: #2FBF71;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.2);
        }

        .form-label {
            display: block;
            font-size: 0.86rem;
            font-weight: 600;
            color: #2B2B2F;
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .form-label-light {
            color: #E0E0DC;
        }

        .timeline-item {
            position: relative;
            padding-left: 28px;
            padding-bottom: 36px;
            border-left: 2px solid #E5E5E0;
        }

        .timeline-item:last-child {
            border-left-color: transparent;
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 0;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #2FBF71;
            box-shadow: 0 0 8px rgba(47, 191, 113, 0.5);
        }

        .timeline-item:nth-child(odd)::before {
            background: #FF6B35;
            box-shadow: 0 0 8px rgba(255, 107, 53, 0.5);
        }

        .article-card {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid #E5E5E0;
            transition: padding-left 0.2s ease;
        }

        .article-card:hover {
            padding-left: 8px;
        }

        .article-card .article-date {
            font-family: var(--font-mono);
            font-size: 0.8rem;
            color: #999;
            white-space: nowrap;
            min-width: 84px;
            letter-spacing: 0.02em;
        }

        .article-card h3 {
            margin: 0 0 6px 0;
            font-size: 1rem;
            font-weight: 600;
        }

        .article-card p {
            margin: 0;
            font-size: 0.88rem;
            color: #666;
            line-height: 1.7;
        }

        .product-preview-screen {
            background: #1A1A1E;
            border: 3px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-lg), inset 0 0 40px rgba(47, 191, 113, 0.06);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .led-screen-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .led-screen-score {
            font-family: var(--font-mono);
            font-size: 3rem;
            font-weight: 700;
            color: #2FBF71;
            text-shadow: 0 0 18px rgba(47, 191, 113, 0.7);
            letter-spacing: 0.06em;
            line-height: 1;
        }

        @media (max-width: 480px) {
            .led-screen-score {
                font-size: 2rem;
            }
        }

        .led-screen-time {
            font-family: var(--font-mono);
            font-size: 1.4rem;
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.6);
            letter-spacing: 0.04em;
        }

        .led-screen-label {
            font-size: 0.72rem;
            color: #999;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            font-weight: 600;
        }

        .footer {
            background-color: #1A1A1E;
            color: #B0B0AA;
            padding: 48px 0 32px;
            border-top: 1px solid #2E2E33;
        }

        .footer a {
            color: #B0B0AA;
            font-size: 0.9rem;
            display: block;
            padding: 4px 0;
            transition: color 0.2s ease;
        }

        .footer a:hover {
            color: #2FBF71;
        }

        .footer-title {
            color: #F5F5F3;
            font-weight: 600;
            font-size: 0.95rem;
            margin: 0 0 12px 0;
            letter-spacing: 0.01em;
        }

        .footer-bottom {
            border-top: 1px solid #2E2E33;
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            font-size: 0.82rem;
            color: #666;
        }

        @media (max-width: 767px) {
            .hide-mobile {
                display: none;
            }
            .article-card {
                flex-direction: column;
                gap: 6px;
            }
            .article-card .article-date {
                min-width: auto;
            }
            .led-display-box {
                flex-wrap: wrap;
                gap: 10px;
            }
        }

        @media (max-width: 1023px) {
            .hero-section {
                background-position: 60% center;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }

        .led-text-green {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            text-shadow: 0 0 10px rgba(47, 191, 113, 0.7);
            letter-spacing: 0.04em;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }

        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

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

        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }

        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }

        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }

        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }

        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }

        .tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.4;
        }

        .tag-green {
            background: rgba(47, 191, 113, 0.12);
            color: #1F8C50;
            border: 1px solid rgba(47, 191, 113, 0.3);
        }

        .tag-orange {
            background: rgba(255, 107, 53, 0.1);
            color: #E85A2A;
            border: 1px solid rgba(255, 107, 53, 0.28);
        }

        .tag-dark-light {
            background: rgba(47, 191, 113, 0.1);
            color: #2FBF71;
            border: 1px solid rgba(47, 191, 113, 0.25);
        }

        .tag-dark-orange {
            background: rgba(255, 107, 53, 0.08);
            color: #FF8A5C;
            border: 1px solid rgba(255, 107, 53, 0.3);
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid #2E2E33;
            min-height: 60px;
            display: flex;
            align-items: center;
        }

        .site-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
            color: #FFFFFF;
            white-space: nowrap;
            transition: color 0.2s ease;
        }

        .logo-link:hover {
            color: #2FBF71;
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #2FBF71;
            box-shadow: 0 0 10px rgba(47, 191, 113, 0.7);
            flex-shrink: 0;
            animation: logo-pulse 2.5s ease-in-out infinite;
        }

        @keyframes logo-pulse {
            0%,
            100% {
                box-shadow: 0 0 6px rgba(47, 191, 113, 0.5);
            }
            50% {
                box-shadow: 0 0 16px rgba(47, 191, 113, 0.9);
            }
        }

        .mobile-cta-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #FF6B35;
            color: #FFFFFF;
            padding: 9px 18px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.85rem;
            border: none;
            cursor: pointer;
            transition: background-color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: #E85A2A;
            transform: translateY(-1px);
        }

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

        .nav-cta-btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--color-primary);
            padding: 18px 0;
            border-bottom: 1px solid #2E2E33;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: #B0B0AA;
        }

        .breadcrumb-nav a {
            color: #B0B0AA;
            transition: color 0.2s ease;
        }

        .breadcrumb-nav a:hover {
            color: #2FBF71;
        }

        .breadcrumb-separator {
            color: #55555A;
            font-size: 0.7rem;
        }

        .breadcrumb-current {
            color: #2FBF71;
            font-weight: 500;
        }

        /* Page Banner */
        .page-banner {
            background: #1A1A1E;
            padding: 48px 0 56px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid #2E2E33;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 60%;
            height: 100%;
            background: radial-gradient(ellipse at top right, rgba(47, 191, 113, 0.12), transparent 70%);
            pointer-events: none;
        }

        .page-banner::after {
            content: "";
            position: absolute;
            bottom: -40px;
            left: -20px;
            width: 300px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.06), transparent 70%);
            pointer-events: none;
        }

        .page-banner-inner {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 820px;
        }

        .page-banner h1 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.35;
            margin: 0;
            letter-spacing: 0.01em;
        }

        .page-banner p {
            font-size: 1rem;
            color: #E0E0DC;
            line-height: 1.85;
            margin: 0;
            max-width: 680px;
        }

        .banner-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 4px;
        }

        /* Section Styles */
        .section {
            padding: 64px 0;
        }

        .section-alt {
            background: #F5F5F3;
        }

        .section-dark {
            background: #1A1A1E;
        }

        .section-heading {
            margin-bottom: 40px;
        }

        .section-heading h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin: 0 0 10px;
            line-height: 1.4;
            letter-spacing: 0.01em;
        }

        .section-heading p {
            font-size: 0.95rem;
            color: #66666A;
            line-height: 1.8;
            margin: 0;
            max-width: 640px;
        }

        .section-dark .section-heading h2 {
            color: #FFFFFF;
        }

        .section-dark .section-heading p {
            color: #B0B0AA;
        }

        /* Scenario Cards */
        .scenario-card {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.25s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: #2FBF71;
            transform: translateY(-3px);
        }

        .scenario-card-image {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #1A1A1E;
        }

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

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

        .scenario-card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            flex: 1;
        }

        .scenario-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1A1A1E;
            margin: 0;
            line-height: 1.5;
        }

        .scenario-card-body p {
            font-size: 0.88rem;
            color: #55555A;
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }

        .scenario-card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            padding-top: 4px;
            border-top: 1px solid #F0F0ED;
        }

        .scenario-card-meta .date-text {
            font-size: 0.78rem;
            color: #999;
            margin-left: auto;
        }

        /* Support Blocks */
        .support-block {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease;
        }

        .support-block:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
        }

        .support-block h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #1A1A1E;
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.5;
        }

        .support-block h3 i {
            color: #2FBF71;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .support-block p {
            font-size: 0.9rem;
            color: #55555A;
            line-height: 1.8;
            margin: 0;
        }

        .support-block ul {
            margin: 12px 0 0;
            padding: 0;
            list-style: none;
        }

        .support-block ul li {
            font-size: 0.88rem;
            color: #55555A;
            line-height: 1.75;
            padding: 6px 0;
            padding-left: 20px;
            position: relative;
        }

        .support-block ul li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 14px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #2FBF71;
        }

        /* CTA Compact */
        .cta-compact {
            background: #1A1A1E;
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            border: 1px solid #2E2E33;
            box-shadow: var(--shadow-glow-green);
        }

        .cta-compact-left {
            flex: 1;
            min-width: 240px;
        }

        .cta-compact-left h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .cta-compact-left p {
            font-size: 0.9rem;
            color: #B0B0AA;
            margin: 0;
            line-height: 1.7;
        }

        /* Footer */
        .footer {
            background: #1A1A1E;
            padding: 56px 0 24px;
            border-top: 1px solid #2E2E33;
        }

        .footer a {
            color: #B0B0AA;
            font-size: 0.85rem;
            line-height: 2.2;
            transition: color 0.2s ease;
            display: block;
        }

        .footer a:hover {
            color: #2FBF71;
        }

        .footer-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: #FFFFFF;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid #2E2E33;
            margin-top: 32px;
            font-size: 0.8rem;
            color: #77777A;
        }

        .footer .footer-brand-desc {
            font-size: 0.85rem;
            color: #77777A;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .footer .footer-back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-heading h2 {
                font-size: 1.5rem;
            }
            .cta-compact {
                padding: 28px 24px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                min-height: 52px;
            }
            .logo-link {
                font-size: 1rem;
                gap: 8px;
            }
            .logo-dot {
                width: 8px;
                height: 8px;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.78rem;
            }
            .nav-cta-btn span {
                display: none;
            }
            .nav-cta-btn i {
                font-size: 0.9rem;
            }
            .page-banner {
                padding: 32px 0 40px;
            }
            .page-banner h1 {
                font-size: 1.4rem;
                line-height: 1.45;
            }
            .page-banner p {
                font-size: 0.9rem;
                line-height: 1.75;
            }
            .section {
                padding: 40px 0;
            }
            .section-heading {
                margin-bottom: 28px;
            }
            .section-heading h2 {
                font-size: 1.3rem;
            }
            .scenario-card-body {
                padding: 18px 18px 20px;
            }
            .scenario-card-body h3 {
                font-size: 1rem;
            }
            .support-block {
                padding: 22px 20px;
            }
            .cta-compact {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
                padding: 24px 20px;
            }
            .cta-compact-left h3 {
                font-size: 1.15rem;
            }
            .footer {
                padding: 40px 0 20px;
            }
            .footer .grid {
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-banner h1 {
                font-size: 1.25rem;
            }
            .breadcrumb-nav {
                font-size: 0.78rem;
            }
            .scenario-card-meta .date-text {
                margin-left: 0;
                width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .led-text-green {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            text-shadow: 0 0 12px rgba(47, 191, 113, 0.8);
            letter-spacing: 0.04em;
        }
        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }
        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }
        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }
        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }
        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }
        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 3px 12px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            line-height: 1.5;
            letter-spacing: 0.02em;
        }
        .badge-green {
            background-color: rgba(47, 191, 113, 0.12);
            color: #2FBF71;
            border: 1px solid rgba(47, 191, 113, 0.3);
        }
        .badge-orange {
            background-color: rgba(255, 107, 53, 0.12);
            color: #FF6B35;
            border: 1px solid rgba(255, 107, 53, 0.3);
        }
        .badge-dark {
            background-color: rgba(26, 26, 30, 0.06);
            color: #2B2B2F;
            border: 1px solid rgba(26, 26, 30, 0.12);
        }
        .badge-light {
            background-color: rgba(245, 245, 243, 0.12);
            color: #E0E0DC;
            border: 1px solid rgba(245, 245, 243, 0.2);
        }
        .nav-bar {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(46, 46, 51, 0.8);
            height: 60px;
            display: flex;
            align-items: center;
        }
        .nav-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.15rem;
            color: #FFFFFF;
            letter-spacing: 0.02em;
            transition: opacity 0.2s ease;
        }
        .logo-link:hover {
            opacity: 0.85;
        }
        .logo-dot {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: #2FBF71;
            box-shadow: 0 0 10px rgba(47, 191, 113, 0.9);
            flex-shrink: 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: #B0B0AA;
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: #B0B0AA;
            transition: color 0.2s ease;
        }
        .breadcrumb-nav a:hover {
            color: #2FBF71;
        }
        .breadcrumb-nav .separator {
            color: #55555A;
            font-size: 0.7rem;
            margin: 0 2px;
        }
        .breadcrumb-nav .current {
            color: #2FBF71;
            font-weight: 500;
        }
        .page-hero-narrow {
            background-color: #1A1A1E;
            background-image: linear-gradient(rgba(26, 26, 30, 0.92), rgba(26, 26, 30, 0.72)), url('/assets/images/6d6f369745d28662.webp');
            background-size: cover;
            background-position: center;
            padding: 56px 0 48px;
            border-bottom: 1px solid #2E2E33;
            position: relative;
            overflow: hidden;
        }
        .page-hero-narrow::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(47, 191, 113, 0.6), rgba(255, 107, 53, 0.4), transparent);
        }
        .section-padding {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding-top: 80px;
                padding-bottom: 80px;
            }
        }
        @media (min-width: 1024px) {
            .section-padding {
                padding-top: 88px;
                padding-bottom: 88px;
            }
        }
        .bg-light-section {
            background-color: #F5F5F3;
        }
        .bg-dark-section {
            background-color: #1A1A1E;
        }
        .section-title-dark {
            color: #1A1A1E;
            font-size: 1.6rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-title-light {
            color: #F5F5F3;
            font-size: 1.6rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: 0.01em;
        }
        .section-subtitle-dark {
            color: #2B2B2F;
            font-size: 0.98rem;
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 32px;
        }
        .section-subtitle-light {
            color: #E0E0DC;
            font-size: 0.98rem;
            line-height: 1.7;
            max-width: 680px;
            margin-bottom: 32px;
        }
        .footer {
            background-color: #1A1A1E;
            padding-top: 48px;
            padding-bottom: 24px;
            border-top: 1px solid #2E2E33;
        }
        .footer .container {
            display: flex;
            flex-direction: column;
        }
        .footer-title {
            color: #FFFFFF;
            font-weight: 600;
            font-size: 0.92rem;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer a {
            display: block;
            color: #B0B0AA;
            font-size: 0.87rem;
            line-height: 1.8;
            transition: color 0.2s ease;
        }
        .footer a:hover {
            color: #2FBF71;
        }
        .footer-bottom {
            border-top: 1px solid #2E2E33;
            padding-top: 16px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            color: #77776E;
        }
        .icon-circle-green {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(47, 191, 113, 0.12);
            color: #2FBF71;
            font-size: 1.2rem;
            flex-shrink: 0;
            border: 1px solid rgba(47, 191, 113, 0.25);
        }
        .icon-circle-orange {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(255, 107, 53, 0.12);
            color: #FF6B35;
            font-size: 1.2rem;
            flex-shrink: 0;
            border: 1px solid rgba(255, 107, 53, 0.25);
        }
        .icon-circle-dark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(26, 26, 30, 0.08);
            color: #2B2B2F;
            font-size: 1.2rem;
            flex-shrink: 0;
            border: 1px solid rgba(26, 26, 30, 0.12);
        }
        .tip-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            background-color: #FFFFFF;
            border: 1px solid #E5E5E0;
            transition: border-color 0.2s ease;
        }
        .tip-item:hover {
            border-color: #2FBF71;
        }
        .tip-list-dark {
            background-color: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 20px;
        }
        .tip-list-dark .tip-line {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid #2E2E33;
            color: #E0E0DC;
            font-size: 0.9rem;
            line-height: 1.65;
        }
        .tip-list-dark .tip-line:last-child {
            border-bottom: none;
        }
        .list-card {
            display: flex;
            flex-direction: column;
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
            overflow: hidden;
            height: 100%;
        }
        .list-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }
        .list-card-body {
            padding: 20px 20px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .list-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: #1A1A1E;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .list-card-summary {
            font-size: 0.88rem;
            color: #55555A;
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .list-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
            flex-wrap: wrap;
        }
        .list-card-date {
            font-size: 0.78rem;
            color: #9A9A90;
            font-family: var(--font-mono);
        }
        .cta-mini-section {
            background-color: #1A1A1E;
            background-image: linear-gradient(rgba(26, 26, 30, 0.88), rgba(26, 26, 30, 0.78)), url('/assets/images/50b3a8a7120ae574.webp');
            background-size: cover;
            background-position: center;
            padding: 48px 0;
            border-top: 1px solid #2E2E33;
            border-bottom: 1px solid #2E2E33;
        }
        .cta-mini-card {
            background-color: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: flex-start;
        }
        @media (min-width: 768px) {
            .cta-mini-card {
                flex-direction: row;
                align-items: center;
                justify-content: space-between;
                gap: 24px;
                padding: 28px 32px;
            }
        }
        .support-card {
            background-color: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: border-color 0.25s ease, box-shadow 0.3s ease;
        }
        .support-card:hover {
            border-color: #2FBF71;
            box-shadow: var(--shadow-md);
        }
        @media (max-width: 520px) {
            .nav-bar {
                height: 52px;
            }
            .logo-link {
                font-size: 1rem;
                gap: 6px;
            }
            .logo-dot {
                width: 9px;
                height: 9px;
            }
            .btn-primary {
                padding: 8px 14px;
                font-size: 0.82rem;
                border-radius: 6px;
            }
            .btn-secondary,
            .btn-secondary-light {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
            .page-hero-narrow {
                padding: 32px 0 28px;
            }
            .section-title-dark,
            .section-title-light {
                font-size: 1.3rem;
            }
            .section-padding {
                padding-top: 44px;
                padding-bottom: 44px;
            }
            .breadcrumb-nav {
                font-size: 0.75rem;
                gap: 4px;
            }
            .list-card-body {
                padding: 16px 14px 14px;
            }
            .list-card-title {
                font-size: 0.95rem;
            }
            .cta-mini-card {
                padding: 20px 16px;
            }
            .support-card {
                padding: 16px 14px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        @media (min-width: 640px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }
        .led-text-green {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            text-shadow: 0 0 10px rgba(47, 191, 113, 0.7);
            letter-spacing: 0.04em;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }
        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }
        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }
        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }
        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }
        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }
        .header-nav {
            background-color: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid #2E2E33;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            display: flex;
            align-items: center;
        }
        @media (max-width: 640px) {
            .header-nav {
                height: 56px;
            }
        }
        .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background-color: #2FBF71;
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(47, 191, 113, 0.8);
            margin-right: 2px;
        }
        .breadcrumb-link {
            color: #B0B0AA;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }
        .breadcrumb-link:hover {
            color: #2FBF71;
        }
        .breadcrumb-separator {
            color: #5A5A55;
            margin: 0 8px;
            font-size: 0.8rem;
        }
        .footer {
            background-color: #1A1A1E;
            color: #B0B0AA;
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer .footer-title {
            color: #F5F5F3;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .footer a {
            display: block;
            font-size: 0.9rem;
            margin-bottom: 12px;
            color: #B0B0AA;
            transition: color 0.2s ease;
        }
        .footer a:hover {
            color: #2FBF71;
        }
        .footer-bottom {
            border-top: 1px solid #2E2E33;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: #6B6B66;
        }
        .spec-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .spec-icon-green {
            background-color: rgba(47, 191, 113, 0.12);
            color: #2FBF71;
        }
        .spec-icon-orange {
            background-color: rgba(255, 107, 53, 0.12);
            color: #FF6B35;
        }
        .tag-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .tag-green {
            background-color: rgba(47, 191, 113, 0.1);
            color: #2FBF71;
        }
        .tag-orange {
            background-color: rgba(255, 107, 53, 0.1);
            color: #E85A2A;
        }
        .tag-gray {
            background-color: #F0F0EC;
            color: #4A4A45;
        }
        .breadcrumb-area {
            background-color: #1A1A1E;
            padding: 32px 0 28px;
            border-bottom: 1px solid #2E2E33;
        }
        .breadcrumb-area .h1-inner {
            color: #FFFFFF;
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.3;
            margin: 12px 0 8px;
        }
        @media (min-width: 768px) {
            .breadcrumb-area .h1-inner {
                font-size: 2.2rem;
            }
        }
        .breadcrumb-area .page-desc {
            color: #E0E0DC;
            font-size: 0.95rem;
            max-width: 700px;
            line-height: 1.8;
        }
        .section-pad {
            padding: 56px 0;
        }
        @media (min-width: 768px) {
            .section-pad {
                padding: 80px 0;
            }
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #1A1A1E;
            line-height: 1.35;
            margin-bottom: 8px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 1.9rem;
            }
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: #4A4A45;
            max-width: 680px;
            line-height: 1.75;
        }
        .dark-section .section-title {
            color: #F5F5F3;
        }
        .dark-section .section-subtitle {
            color: #B0B0AA;
        }
        .dark-section {
            background-color: #1A1A1E;
        }
        .light-section {
            background-color: #F5F5F3;
        }
        .white-section {
            background-color: #FFFFFF;
        }
        .spec-value {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 1.1rem;
            color: #1A1A1E;
            letter-spacing: 0.02em;
        }
        .spec-label {
            font-size: 0.8rem;
            color: #6B6B66;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            font-weight: 600;
        }
        .info-list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid #E5E5E0;
        }
        .info-list-item:last-child {
            border-bottom: none;
        }
        .info-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .info-icon-green {
            background-color: rgba(47, 191, 113, 0.15);
            color: #2FBF71;
        }
        .info-icon-orange {
            background-color: rgba(255, 107, 53, 0.15);
            color: #E85A2A;
        }
        .cta-area {
            background-color: #1A1A1E;
            padding: 64px 0;
        }
        .cta-card {
            background-color: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: center;
        }
        @media (min-width: 768px) {
            .cta-card {
                padding: 48px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }
        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }

        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }
        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }

        .nav-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid #2E2E33;
            height: 60px;
            display: flex;
            align-items: center;
        }
        @media (max-width: 767px) {
            .nav-header {
                height: 52px;
            }
        }

        .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: #2FBF71;
            box-shadow: 0 0 12px rgba(47, 191, 113, 0.8);
            flex-shrink: 0;
        }

        .hero-banner {
            background: linear-gradient(135deg, rgba(26, 26, 30, 0.92) 0%, rgba(26, 26, 30, 0.78) 60%, rgba(26, 26, 30, 0.65) 100%);
            padding-top: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid #2E2E33;
            position: relative;
            overflow: hidden;
        }
        @media (min-width: 768px) {
            .hero-banner {
                padding-top: 64px;
                padding-bottom: 64px;
            }
        }

        .breadcrumb-link {
            color: #B0B0AA;
            font-size: 0.85rem;
            transition: color 0.2s ease;
        }
        .breadcrumb-link:hover {
            color: #2FBF71;
        }

        .footer {
            background-color: #1A1A1E;
            padding-top: 56px;
            padding-bottom: 28px;
            border-top: 1px solid #2E2E33;
        }
        .footer-title {
            color: #F5F5F3;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer a {
            color: #B0B0AA;
            font-size: 0.88rem;
            display: block;
            margin-bottom: 10px;
            transition: color 0.2s ease;
        }
        .footer a:hover {
            color: #2FBF71;
        }
        .footer-bottom {
            border-top: 1px solid #2E2E33;
            padding-top: 20px;
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            color: #6B6B70;
            font-size: 0.82rem;
        }

        .tag-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background-color: rgba(47, 191, 113, 0.12);
            color: #1F8F54;
            border: 1px solid rgba(47, 191, 113, 0.3);
        }
        .tag-badge-dark {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background-color: rgba(47, 191, 113, 0.15);
            color: #2FBF71;
            border: 1px solid rgba(47, 191, 113, 0.35);
        }

        .section-title-h2 {
            font-size: 1.5rem;
            font-weight: 700;
            line-height: 1.4;
            color: #1A1A1E;
            letter-spacing: 0.01em;
        }
        @media (min-width: 768px) {
            .section-title-h2 {
                font-size: 1.875rem;
            }
        }

        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(47, 191, 113, 0.1);
            color: #2FBF71;
            font-size: 1.15rem;
            flex-shrink: 0;
        }
        .icon-circle-orange {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(255, 107, 53, 0.1);
            color: #FF6B35;
            font-size: 1.15rem;
            flex-shrink: 0;
        }

        .data-highlight {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            text-shadow: 0 0 14px rgba(47, 191, 113, 0.45);
            letter-spacing: 0.04em;
        }

        .divider-line {
            height: 1px;
            background-color: #E5E5E0;
            border: none;
            margin: 0;
        }
        .divider-line-dark {
            height: 1px;
            background-color: #2E2E33;
            border: none;
            margin: 0;
        }

        @media (max-width: 767px) {
            .section-title-h2 {
                font-size: 1.35rem;
            }
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .led-text-green {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            text-shadow: var(--text-shadow-led);
            letter-spacing: 0.04em;
        }

        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }

        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

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

        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }

        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }

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

        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }

        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }

        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }

        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }

        .nav-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid #2E2E33;
        }

        .nav-inner {
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        @media (max-width: 640px) {
            .nav-inner {
                height: 56px;
            }
        }

        .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background-color: #2FBF71;
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(47, 191, 113, 0.7);
            flex-shrink: 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: #888;
        }

        .breadcrumb a {
            color: #888;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #2FBF71;
        }

        .breadcrumb .separator {
            color: #555;
        }

        .breadcrumb .current {
            color: #2FBF71;
            font-weight: 500;
        }

        .banner-section {
            background-color: #1A1A1E;
            background-image: url('/assets/images/3a76a30718b81649.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 64px 0 48px;
            overflow: hidden;
        }

        .banner-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 30, 0.88) 0%, rgba(26, 26, 30, 0.72) 100%);
            z-index: 1;
        }

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

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(47, 191, 113, 0.15);
            color: #2FBF71;
            border: 1px solid rgba(47, 191, 113, 0.3);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.03em;
        }

        .section-badge-orange {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 107, 53, 0.15);
            color: #FF6B35;
            border: 1px solid rgba(255, 107, 53, 0.3);
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.03em;
        }

        .footer {
            background-color: #1A1A1E;
            border-top: 1px solid #2E2E33;
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-title {
            color: #FFFFFF;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer a {
            display: block;
            color: #B0B0AA;
            font-size: 0.88rem;
            margin-bottom: 10px;
            transition: color 0.2s ease;
        }

        .footer a:hover {
            color: #2FBF71;
        }

        .footer-bottom {
            border-top: 1px solid #2E2E33;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            color: #6B6B6B;
            font-size: 0.8rem;
        }

        .faq-item {
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            background: #FFFFFF;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: #2FBF71;
            box-shadow: var(--shadow-md);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-weight: 600;
            color: #1A1A1E;
            list-style: none;
            font-size: 0.95rem;
            transition: color 0.2s ease;
            user-select: none;
        }

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

        .faq-item summary:hover {
            color: #2FBF71;
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: #F5F5F3;
            color: #1A1A1E;
            font-size: 0.9rem;
            transition: background-color 0.2s ease, color 0.2s ease, transform 0.25s ease;
        }

        .faq-item[open] summary .faq-icon {
            background: #2FBF71;
            color: #FFFFFF;
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 20px 18px;
            color: #4B4B4F;
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .spec-table-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid #E5E5E0;
        }

        .spec-table-row:last-child {
            border-bottom: none;
        }

        .spec-label {
            font-weight: 600;
            color: #1A1A1E;
            font-size: 0.92rem;
        }

        .spec-value {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #2FBF71;
            font-size: 0.95rem;
            text-align: right;
        }

        @media (max-width: 640px) {
            .spec-table-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .spec-value {
                text-align: left;
            }
            .banner-section {
                padding: 48px 0 36px;
            }
        }

        .img-cover-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background-color: #232327;
            border: 1px solid #2E2E33;
        }

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

        .card-light:hover .img-cover-wrap img,
        .card-dark:hover .img-cover-wrap img {
            transform: scale(1.04);
        }

        .outdoor-stat {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 2.2rem;
            color: #2FBF71;
            letter-spacing: 0.02em;
            text-shadow: 0 0 16px rgba(47, 191, 113, 0.35);
        }

        .outdoor-stat-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            font-size: 2.2rem;
            color: #FF6B35;
            letter-spacing: 0.02em;
            text-shadow: 0 0 16px rgba(255, 107, 53, 0.35);
        }

/* roulang page: category6 */
:root {
            --color-primary: #1A1A1E;
            --color-secondary: #2FBF71;
            --color-accent: #FF6B35;
            --color-accent-hover: #E85A2A;
            --color-bg-light: #F5F5F3;
            --color-text-dark: #1A1A1E;
            --color-text-secondary-dark: #2B2B2F;
            --color-text-light: #F5F5F3;
            --color-text-muted-light: #E0E0DC;
            --color-border-light: #E5E5E0;
            --color-border-dark: #2E2E33;
            --color-card-dark: #232327;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SFMono-Regular", "Roboto Mono", "Menlo", "Consolas", monospace;
            --radius-lg: 12px;
            --radius-md: 8px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(26, 26, 30, 0.1);
            --shadow-lg: 0 12px 32px rgba(26, 26, 30, 0.14);
            --shadow-glow-green: 0 0 30px rgba(47, 191, 113, 0.08);
            --shadow-glow-orange: 0 0 24px rgba(255, 107, 53, 0.12);
            --text-shadow-led: 0 0 12px rgba(47, 191, 113, 0.8);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-dark);
            background-color: #FFFFFF;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        .font-mono-data {
            font-family: var(--font-mono);
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .led-text-orange {
            font-family: var(--font-mono);
            font-weight: 700;
            color: #FF6B35;
            text-shadow: 0 0 10px rgba(255, 107, 53, 0.7);
            letter-spacing: 0.04em;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #FF6B35;
            color: #FFFFFF;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background-color 0.25s ease, transform 0.15s ease, box-shadow 0.25s ease;
            box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:hover {
            background-color: #E85A2A;
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(0.98);
            box-shadow: 0 1px 4px rgba(255, 107, 53, 0.3);
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #1A1A1E;
            border: 2px solid #E5E5E0;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }
        .btn-secondary:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-secondary-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #F5F5F3;
            border: 2px solid #2E2E33;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-weight: 600;
            font-size: 0.92rem;
            cursor: pointer;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
        }
        .btn-secondary-light:hover {
            border-color: #2FBF71;
            color: #2FBF71;
        }
        .card-light {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
        }
        .card-light:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }
        .card-dark {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
        }
        .card-dark:hover {
            border-color: #FF6B35;
            box-shadow: var(--shadow-glow-orange);
            transform: translateY(-2px);
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: rgba(26, 26, 30, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid #2E2E33;
            height: 64px;
        }
        @media (max-width: 640px) {
            .site-header {
                height: 56px;
            }
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.01em;
        }
        .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background-color: #2FBF71;
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(47, 191, 113, 0.9);
        }
        .nav-cta {
            background-color: #FF6B35;
            color: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 8px 18px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: background-color 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .nav-cta:hover {
            background-color: #E85A2A;
            transform: translateY(-1px);
        }
        .nav-cta:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(47, 191, 113, 0.6);
        }
        .category-hero {
            position: relative;
            background-image: url('/assets/images/6d6f369745d28662.webp');
            background-size: cover;
            background-position: center;
            min-height: 320px;
            padding: 64px 0;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(26,26,30,0.93) 0%, rgba(26,26,30,0.75) 55%, rgba(26,26,30,0.55) 100%);
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #B0B0AA;
            font-size: 0.85rem;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #2FBF71;
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: #F5F5F3;
        }
        .breadcrumb .separator {
            color: #5A5A60;
        }
        .category-hero h1 {
            color: #FFFFFF;
            font-size: 32px;
            line-height: 1.25;
            font-weight: 700;
            max-width: 800px;
            margin: 0 0 12px;
        }
        @media (min-width: 768px) {
            .category-hero h1 {
                font-size: 42px;
            }
        }
        .category-hero .hero-desc {
            color: #E0E0DC;
            font-size: 1.05rem;
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }
        .section {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        @media (min-width: 1024px) {
            .section {
                padding-top: 80px;
                padding-bottom: 80px;
            }
        }
        .section-bg-light {
            background-color: #F5F5F3;
        }
        .section-bg-white {
            background-color: #FFFFFF;
        }
        .section-bg-dark {
            background-color: #1A1A1E;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            color: #1A1A1E;
            margin-bottom: 12px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 32px;
            }
        }
        .section-title.light {
            color: #F5F5F3;
        }
        .section-subtitle {
            color: #2B2B2F;
            max-width: 720px;
            margin-bottom: 40px;
            font-size: 1rem;
            line-height: 1.8;
        }
        .section-subtitle.light {
            color: #E0E0DC;
        }
        .checklist-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .checklist-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .checklist-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .check-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            padding: 18px 20px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .check-item:hover {
            border-color: #2FBF71;
            box-shadow: var(--shadow-sm);
        }
        .check-item i {
            color: #2FBF71;
            font-size: 1.2rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .check-item .check-content {
            flex: 1;
        }
        .check-item .check-title {
            font-weight: 600;
            color: #1A1A1E;
            margin-bottom: 4px;
            font-size: 0.98rem;
        }
        .check-item .check-desc {
            color: #4A4A50;
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            margin-top: 8px;
        }
        @media (min-width: 640px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .guide-card {
            background: #FFFFFF;
            border: 1px solid #E5E5E0;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-md);
            border-color: #2FBF71;
            transform: translateY(-2px);
        }
        .guide-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
            border-bottom: 1px solid #E5E5E0;
        }
        .guide-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tag {
            display: inline-block;
            background-color: rgba(47, 191, 113, 0.1);
            color: #2FBF71;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .guide-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1A1A1E;
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .guide-card p {
            color: #4A4A50;
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .guide-card .card-link {
            font-weight: 600;
            color: #E85A2A;
            font-size: 0.9rem;
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.2s ease;
        }
        .guide-card .card-link:hover {
            color: #FF6B35;
            text-decoration: underline;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .step-card {
            background: #232327;
            border: 1px solid #2E2E33;
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-glow-green);
            transition: border-color 0.3s ease, transform 0.2s ease;
        }
        .step-card:hover {
            border-color: #FF6B35;
            transform: translateY(-2px);
        }
        .step-number {
            font-family: var(--font-mono);
            font-size: 2.4rem;
            font-weight: 700;
            color: #2FBF71;
            text-shadow: var(--text-shadow-led);
            line-height: 1;
            margin-bottom: 12px;
        }
        .step-card h3 {
            color: #F5F5F3;
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .step-card p {
            color: #B0B0AA;
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .tip-block {
            background: #FFFFFF;
            border-left: 4px solid #2FBF71;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .tip-block h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1A1A1E;
            margin: 0 0 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tip-block h3 i {
            color: #FF6B35;
        }
        .tip-block p {
            color: #4A4A50;
            font-size: 0.95rem;
            line-height: 1.8;
            margin: 0;
        }
        .notice-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }
        @media (min-width: 768px) {
            .notice-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .notice-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: #4A4A50;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .notice-list li i {
            color: #E85A2A;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .mini-cta {
            background: #1A1A1E;
            border-top: 1px solid #2E2E33;
            border-bottom: 1px solid #2E2E33;
            padding: 40px 0;
        }
        .mini-cta .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }
        @media (min-width: 768px) {
            .mini-cta .container {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }
        .mini-cta h2 {
            color: #F5F5F3;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 0 4px;
        }
        .mini-cta p {
            color: #B0B0AA;
            font-size: 0.95rem;
            margin: 0;
        }
        .site-footer {
            background-color: #1A1A1E;
            border-top: 1px solid #2E2E33;
            padding-top: 48px;
            padding-bottom: 24px;
        }
        .site-footer .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) {
            .site-footer .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width: 1024px) {
            .site-footer .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .footer-col-span {
            grid-column: span 2;
        }
        @media (min-width: 768px) {
            .footer-col-span {
                grid-column: span 1;
            }
        }
        .footer-title {
            color: #FFFFFF;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            text-transform: uppercase;
        }
        .site-footer a {
            display: block;
            color: #B0B0AA;
            font-size: 0.9rem;
            margin-bottom: 10px;
            transition: color 0.2s ease;
        }
        .site-footer a:hover {
            color: #2FBF71;
        }
        .footer-bottom {
            border-top: 1px solid #2E2E33;
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            color: #6B6B72;
            font-size: 0.8rem;
        }
        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #FFFFFF;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer-logo .logo-dot {
            width: 10px;
            height: 10px;
            background-color: #2FBF71;
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(47, 191, 113, 0.9);
        }
        .footer-desc {
            color: #6B6B72;
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .footer-home-link {
            color: #2FBF71 !important;
            font-size: 0.9rem;
            font-weight: 600;
        }