/* roulang page: index */
:root {
            --hp-bg-dark: #0a0f1e;
            --hp-bg-secondary: #0d1528;
            --hp-bg-section: #111b33;
            --hp-glass-bg: rgba(255, 255, 255, 0.05);
            --hp-glass-border: rgba(255, 255, 255, 0.1);
            --hp-primary: #2b7fff;
            --hp-secondary: #22d3ee;
            --hp-accent: #f5b731;
            --hp-text: #e2e8f0;
            --hp-text-secondary: #94a3b8;
            --hp-text-muted: #475569;
            --hp-radius: 16px;
            --hp-radius-sm: 8px;
            --hp-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --hp-transition: 0.3s ease;
            --hp-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --hp-font-num: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
            --hp-gradient: linear-gradient(135deg, var(--hp-primary), var(--hp-secondary));
            --hp-gutter: 24px;
            --hp-space-lg: 96px;
            --hp-space-md: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--hp-font);
            background-color: var(--hp-bg-dark);
            color: var(--hp-text);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1200px;
            padding-left: var(--hp-gutter);
            padding-right: var(--hp-gutter);
        }

        .section-padding {
            padding-top: var(--hp-space-lg);
            padding-bottom: var(--hp-space-lg);
        }

        .section-padding-sm {
            padding-top: var(--hp-space-md);
            padding-bottom: var(--hp-space-md);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            position: relative;
            padding-left: 18px;
            line-height: 1.4;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            width: 4px;
            height: 70%;
            background: var(--hp-gradient);
            border-radius: 4px;
        }

        .section-subtitle {
            color: var(--hp-text-secondary);
            font-size: 1rem;
            max-width: 640px;
            line-height: 1.7;
        }

        .text-gradient {
            background: var(--hp-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Header ===== */
        .hp-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 15, 30, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--hp-transition), box-shadow var(--hp-transition);
        }

        .hp-header.scrolled {
            background: rgba(10, 15, 30, 0.92);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .hp-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .hp-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--hp-text);
            letter-spacing: 0.02em;
        }

        .hp-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--hp-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 20px rgba(43, 127, 255, 0.3);
        }

        .hp-logo-text {
            font-size: 1.05rem;
        }

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

        .hp-nav-menu>li {
            position: relative;
        }

        .hp-nav-menu>li>a {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 10px 16px;
            color: var(--hp-text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--hp-radius-sm);
            position: relative;
            transition: color var(--hp-transition);
            min-height: 44px;
        }

        .hp-nav-menu>li>a:hover {
            color: var(--hp-text);
        }

        .hp-nav-menu>li>a.active {
            color: var(--hp-text);
        }

        .hp-nav-menu>li>a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--hp-gradient);
            border-radius: 4px;
        }

        .hp-nav-menu .dropdown-menu {
            background: rgba(13, 21, 40, 0.95);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 8px;
            margin-top: 8px;
            box-shadow: var(--hp-shadow);
            min-width: 200px;
        }

        .hp-nav-menu .dropdown-menu a {
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--hp-text-secondary);
            font-size: 0.92rem;
            transition: background var(--hp-transition), color var(--hp-transition);
            display: block;
        }

        .hp-nav-menu .dropdown-menu a:hover {
            background: rgba(43, 127, 255, 0.1);
            color: var(--hp-text);
        }

        .hp-menu-btn {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--hp-text);
            padding: 8px 14px;
            border-radius: var(--hp-radius-sm);
            font-size: 1.2rem;
            cursor: pointer;
            min-height: 44px;
        }

        /* ===== Hero ===== */
        .hp-hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background-color: var(--hp-bg-dark);
            background-size: cover;
            background-position: center;
            overflow: hidden;
            padding: 140px 0 100px;
        }

        .hp-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.35) 0%, rgba(10, 15, 30, 0.75) 60%, var(--hp-bg-dark) 100%);
            z-index: 1;
        }

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

        .hp-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 30px;
            background: rgba(43, 127, 255, 0.15);
            border: 1px solid rgba(43, 127, 255, 0.3);
            color: var(--hp-secondary);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hp-hero h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.5rem);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: 0.02em;
            color: var(--hp-text);
            max-width: 840px;
            margin-bottom: 20px;
            text-shadow: 0 0 30px rgba(43, 127, 255, 0.3);
        }

        .hp-hero-sub {
            font-size: 1.15rem;
            color: var(--hp-text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 36px;
        }

        .hp-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hp-btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--hp-radius-sm);
            background: var(--hp-gradient);
            color: #fff;
            border: none;
            cursor: pointer;
            min-height: 48px;
            box-shadow: 0 4px 24px rgba(43, 127, 255, 0.35);
            transition: all var(--hp-transition);
        }

        .hp-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(43, 127, 255, 0.45);
            color: #fff;
        }

        .hp-btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 16px rgba(43, 127, 255, 0.3);
        }

        .hp-btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 500;
            border-radius: var(--hp-radius-sm);
            background: transparent;
            color: var(--hp-text);
            border: 1px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            min-height: 48px;
            transition: all var(--hp-transition);
        }

        .hp-btn-outline:hover {
            border-color: var(--hp-primary);
            color: var(--hp-text);
            background: rgba(43, 127, 255, 0.08);
            transform: translateY(-2px);
        }

        .hp-scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: var(--hp-text-secondary);
            font-size: 1.3rem;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
                opacity: 0.7;
            }
            50% {
                transform: translateX(-50%) translateY(10px);
                opacity: 1;
            }
        }

        /* ===== Metrics ===== */
        .hp-metrics {
            padding-top: var(--hp-space-md);
            padding-bottom: var(--hp-space-md);
        }

        .hp-metric-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius);
            padding: 28px 24px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: transform var(--hp-transition), border-color var(--hp-transition);
            height: 100%;
        }

        .hp-metric-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.3);
        }

        .hp-metric-icon {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(43, 127, 255, 0.14);
            color: var(--hp-secondary);
            font-size: 1.2rem;
        }

        .hp-metric-num {
            font-family: var(--hp-font-num);
            font-size: clamp(1.8rem, 2.5vw, 2.4rem);
            font-weight: 700;
            background: var(--hp-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .hp-metric-label {
            color: var(--hp-text-secondary);
            font-size: 0.92rem;
        }

        .hp-metric-line {
            width: 36px;
            height: 3px;
            border-radius: 3px;
            background: var(--hp-gradient);
            margin: 14px auto 0;
        }

        .hp-metric-line.gold {
            background: linear-gradient(90deg, var(--hp-accent), var(--hp-primary));
        }

        /* ===== Services ===== */
        .hp-services {
            background: var(--hp-bg-secondary);
            padding-top: var(--hp-space-lg);
            padding-bottom: var(--hp-space-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .hp-service-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius);
            padding: 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: transform var(--hp-transition), border-color var(--hp-transition), box-shadow var(--hp-transition);
        }

        .hp-service-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.35);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(43, 127, 255, 0.08);
        }

        .hp-service-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(43, 127, 255, 0.12);
            color: var(--hp-secondary);
            font-size: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            transition: background var(--hp-transition), color var(--hp-transition);
        }

        .hp-service-card:hover .hp-service-icon {
            background: rgba(34, 211, 238, 0.18);
            color: var(--hp-secondary);
        }

        .hp-service-card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--hp-text);
        }

        .hp-service-card p {
            color: var(--hp-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            flex-grow: 1;
            margin-bottom: 20px;
        }

        .hp-service-link {
            color: var(--hp-primary);
            font-size: 0.9rem;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--hp-transition), color var(--hp-transition);
            min-height: 36px;
        }

        .hp-service-link:hover {
            color: var(--hp-secondary);
            gap: 10px;
        }

        .hp-service-cta-card {
            background: var(--hp-gradient);
            border: none;
            border-radius: var(--hp-radius);
            padding: 32px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            height: 100%;
            box-shadow: 0 8px 32px rgba(43, 127, 255, 0.3);
            position: relative;
            overflow: hidden;
        }

        .hp-service-cta-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .hp-service-cta-card p {
            font-size: 0.95rem;
            opacity: 0.92;
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .hp-service-cta-card .hp-btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            background: #fff;
            color: var(--hp-primary);
            font-weight: 600;
            border-radius: var(--hp-radius-sm);
            font-size: 0.92rem;
            border: none;
            cursor: pointer;
            min-height: 44px;
            transition: transform var(--hp-transition), box-shadow var(--hp-transition);
            align-self: flex-start;
        }

        .hp-service-cta-card .hp-btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        /* ===== News ===== */
        .hp-news {
            padding-top: var(--hp-space-lg);
            padding-bottom: var(--hp-space-lg);
        }

        .hp-news-card {
            display: flex;
            gap: 20px;
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius);
            padding: 18px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
            transition: transform var(--hp-transition), border-color var(--hp-transition);
            height: 100%;
        }

        .hp-news-card:hover {
            transform: translateY(-3px);
            border-color: rgba(43, 127, 255, 0.3);
        }

        .hp-news-thumb {
            flex-shrink: 0;
            width: 120px;
            height: 90px;
            border-radius: 10px;
            overflow: hidden;
        }

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

        .hp-news-card:hover .hp-news-thumb img {
            transform: scale(1.05);
        }

        .hp-news-body {
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .hp-news-body h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--hp-text);
            margin-bottom: 6px;
            line-height: 1.5;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .hp-news-body h3 a {
            color: inherit;
        }

        .hp-news-body h3 a:hover {
            color: var(--hp-primary);
        }

        .hp-news-body p {
            font-size: 0.85rem;
            color: var(--hp-text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .hp-news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: auto;
            font-size: 0.82rem;
            color: var(--hp-text-muted);
        }

        .hp-news-meta a {
            color: var(--hp-primary);
            font-weight: 500;
            margin-left: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            min-height: 32px;
        }

        .hp-news-meta a:hover {
            color: var(--hp-secondary);
        }

        .hp-badge {
            display: inline-block;
            padding: 2px 10px;
            font-size: 0.75rem;
            font-weight: 500;
            border-radius: 6px;
            background: rgba(43, 127, 255, 0.15);
            color: var(--hp-secondary);
            margin-bottom: 8px;
            align-self: flex-start;
        }

        .hp-empty-state {
            border: 2px dashed rgba(255, 255, 255, 0.15);
            border-radius: var(--hp-radius);
            padding: 60px 30px;
            text-align: center;
            color: var(--hp-text-secondary);
            background: rgba(255, 255, 255, 0.02);
        }

        .hp-empty-state i {
            font-size: 2.2rem;
            color: var(--hp-text-muted);
            margin-bottom: 16px;
            display: block;
        }

        .hp-empty-state p {
            font-size: 1rem;
            margin-bottom: 0;
        }

        /* ===== Compare ===== */
        .hp-compare {
            background: var(--hp-bg-secondary);
            padding-top: var(--hp-space-lg);
            padding-bottom: var(--hp-space-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
        }

        .hp-compare-row {
            position: relative;
        }

        .hp-compare-center-line {
            position: absolute;
            left: 50%;
            top: 20px;
            bottom: 20px;
            width: 1px;
            background: rgba(255, 255, 255, 0.08);
            transform: translateX(-50%);
        }

        .hp-vs-badge {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--hp-bg-dark);
            border: 2px solid rgba(43, 127, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            color: var(--hp-secondary);
            z-index: 3;
            box-shadow: 0 0 30px rgba(43, 127, 255, 0.2);
        }

        .hp-compare-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius);
            padding: 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
            height: 100%;
        }

        .hp-compare-card.right {
            border-color: rgba(43, 127, 255, 0.35);
            box-shadow: 0 0 40px rgba(43, 127, 255, 0.08), var(--hp-shadow);
        }

        .hp-compare-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hp-compare-card.right h3 {
            color: var(--hp-secondary);
        }

        .hp-compare-item {
            margin-bottom: 24px;
        }

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

        .hp-compare-item-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--hp-text-secondary);
        }

        .hp-compare-bar {
            height: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            overflow: hidden;
        }

        .hp-compare-bar-fill {
            height: 100%;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.2);
            transition: width 1s ease;
        }

        .hp-compare-card.right .hp-compare-bar-fill {
            background: var(--hp-gradient);
        }

        /* ===== FAQ ===== */
        .hp-faq {
            padding-top: var(--hp-space-lg);
            padding-bottom: var(--hp-space-lg);
        }

        .hp-faq-item {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: 12px;
            margin-bottom: 12px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: border-color var(--hp-transition), box-shadow var(--hp-transition);
            overflow: hidden;
        }

        .hp-faq-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(43, 127, 255, 0.3);
            box-shadow: 0 0 20px rgba(43, 127, 255, 0.05);
        }

        .hp-faq-item .accordion-button {
            background: transparent;
            color: var(--hp-text);
            font-size: 1rem;
            font-weight: 500;
            padding: 20px 24px;
            box-shadow: none;
            border: none;
            position: relative;
            transition: color var(--hp-transition);
        }

        .hp-faq-item .accordion-button::after {
            content: "\2b";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            background: none;
            width: auto;
            height: auto;
            font-size: 1.1rem;
            color: var(--hp-text-secondary);
            transition: transform var(--hp-transition), color var(--hp-transition);
        }

        .hp-faq-item .accordion-button:not(.collapsed)::after {
            content: "\2b";
            transform: rotate(45deg);
            color: var(--hp-secondary);
        }

        .hp-faq-item .accordion-button:not(.collapsed) {
            color: var(--hp-secondary);
        }

        .hp-faq-item .accordion-button:focus {
            box-shadow: none;
        }

        .hp-faq-item .accordion-body {
            padding: 0 24px 20px 24px;
            color: var(--hp-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .hp-faq-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--hp-gradient);
            border-radius: 0 3px 3px 0;
            opacity: 0;
            transition: opacity var(--hp-transition);
        }

        .hp-faq-item:has(.accordion-button:not(.collapsed))::before {
            opacity: 1;
        }

        .hp-faq-item {
            position: relative;
        }

        /* ===== Contact ===== */
        .hp-contact {
            background: var(--hp-bg-secondary);
            padding-top: var(--hp-space-lg);
            padding-bottom: var(--hp-space-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        .hp-contact-info-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius);
            padding: 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow);
            height: 100%;
        }

        .hp-contact-info-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hp-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 20px;
        }

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

        .hp-contact-item .hp-contact-icon {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            border-radius: 10px;
            background: rgba(43, 127, 255, 0.12);
            color: var(--hp-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }

        .hp-contact-item .hp-contact-label {
            font-size: 0.85rem;
            color: var(--hp-text-muted);
        }

        .hp-contact-item .hp-contact-value {
            font-size: 0.95rem;
            color: var(--hp-text);
        }

        .hp-contact-form-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius);
            padding: 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
        }

        .hp-contact-form-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hp-form-label {
            font-size: 0.875rem;
            color: var(--hp-text-secondary);
            margin-bottom: 6px;
            display: block;
        }

        .hp-form-control {
            width: 100%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--hp-radius-sm);
            padding: 12px 16px;
            color: var(--hp-text);
            font-size: 0.95rem;
            min-height: 48px;
            transition: border-color var(--hp-transition), box-shadow var(--hp-transition);
            margin-bottom: 16px;
        }

        .hp-form-control:focus {
            outline: none;
            border-color: var(--hp-primary);
            box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }

        .hp-form-control::placeholder {
            color: var(--hp-text-muted);
        }

        select.hp-form-control {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }

        .hp-form-note {
            font-size: 0.82rem;
            color: var(--hp-text-muted);
            margin-top: 12px;
        }

        .hp-form-submit {
            width: 100%;
        }

        /* ===== Footer ===== */
        .hp-footer {
            background: #080c18;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--hp-space-lg);
            padding-bottom: 32px;
        }

        .hp-footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--hp-text);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .hp-footer-desc {
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 24px;
        }

        .hp-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--hp-text);
            margin-bottom: 16px;
        }

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

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

        .hp-footer-links a {
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            transition: color var(--hp-transition), padding-left var(--hp-transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            min-height: 36px;
        }

        .hp-footer-links a:hover {
            color: var(--hp-secondary);
            padding-left: 4px;
        }

        .hp-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--hp-text-muted);
        }

        /* ===== Mobile Bottom Tab ===== */
        .hp-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            background: rgba(10, 15, 30, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            height: 60px;
            padding-bottom: env(safe-area-inset-bottom);
        }

        .hp-bottom-tab a {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            color: var(--hp-text-muted);
            font-size: 0.7rem;
            min-height: 56px;
            transition: color var(--hp-transition);
        }

        .hp-bottom-tab a i {
            font-size: 1.15rem;
        }

        .hp-bottom-tab a.active {
            color: var(--hp-secondary);
        }

        .hp-bottom-tab a.active i {
            text-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
        }

        .hp-bottom-tab a:hover {
            color: var(--hp-text);
        }

        /* ===== Category Panel ===== */
        .hp-cat-panel {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1200;
            background: rgba(10, 15, 30, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top-left-radius: 20px;
            border-top-right-radius: 20px;
            transform: translateY(100%);
            transition: transform 0.3s ease;
            padding: 24px 24px 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hp-cat-panel.show {
            transform: translateY(0);
        }

        .hp-cat-panel-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .hp-cat-panel a.hp-cat-link {
            display: flex;
            align-items: center;
            padding: 14px 16px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--hp-text);
            margin-bottom: 10px;
            font-size: 0.95rem;
            gap: 12px;
            transition: background var(--hp-transition), border-color var(--hp-transition);
            min-height: 48px;
        }

        .hp-cat-panel a.hp-cat-link:hover {
            background: rgba(43, 127, 255, 0.12);
            border-color: rgba(43, 127, 255, 0.3);
        }

        .hp-cat-panel .hp-cat-close {
            display: block;
            width: 100%;
            padding: 12px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            cursor: pointer;
            margin-top: 8px;
            min-height: 44px;
        }

        .hp-cat-panel-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 1150;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(2px);
        }

        .hp-cat-panel-overlay.show {
            display: block;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .hp-nav-menu {
                display: none;
            }

            .hp-menu-btn {
                display: block;
            }

            .hp-nav-menu.mobile-open {
                display: flex;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 15, 30, 0.96);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                gap: 4px;
            }

            .hp-nav-menu.mobile-open>li>a {
                padding: 14px 16px;
                min-height: 44px;
            }

            .hp-nav-menu.mobile-open .dropdown-menu {
                position: static !important;
                transform: none !important;
                background: transparent;
                box-shadow: none;
                border: none;
                padding-left: 24px;
                margin: 0;
            }

            .hp-compare-center-line {
                display: none;
            }

            .hp-vs-badge {
                position: static;
                transform: none;
                margin: 20px auto;
            }

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

        @media (max-width: 767.98px) {
            .hp-hero {
                padding: 120px 0 80px;
            }

            .hp-hero h1 {
                font-size: 1.9rem;
            }

            .hp-hero-sub {
                font-size: 1rem;
            }

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

            .hp-news-thumb {
                width: 100%;
                height: 160px;
            }
        }

        @media (max-width: 575.98px) {
            .hp-bottom-tab {
                display: flex;
            }

            body {
                padding-bottom: 60px;
            }

            .section-title {
                font-size: 1.5rem;
            }

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

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

            .hp-metric-card {
                padding: 20px 16px;
            }

            .hp-service-card {
                padding: 24px 20px;
            }

            .hp-contact-form-card,
            .hp-contact-info-card {
                padding: 24px 20px;
            }

            .hp-footer {
                padding-bottom: 80px;
            }
        }

        @media (min-width: 576px) and (max-width: 767.98px) {
            .hp-news-card {
                flex-direction: row;
            }

            .hp-news-thumb {
                width: 110px;
                height: 82px;
            }
        }

        @media (min-width: 992px) {
            .hp-metrics .row {
                display: grid;
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }

            .hp-metrics .col-lg-3 {
                width: 100%;
                max-width: 100%;
            }
        }

/* roulang page: article */
:root {
    --hp-bg-dark: #0a0f1e;
    --hp-bg-secondary: #0d1528;
    --hp-bg-card: #111b33;
    --hp-primary: #2b7fff;
    --hp-primary-soft: rgba(43, 127, 255, 0.15);
    --hp-cyan: #22d3ee;
    --hp-accent: #f5b731;
    --hp-text: #e2e8f0;
    --hp-text-secondary: #94a3b8;
    --hp-text-muted: #475569;
    --hp-border: rgba(255, 255, 255, 0.08);
    --hp-glass-bg: rgba(255, 255, 255, 0.05);
    --hp-glass-border: rgba(255, 255, 255, 0.1);
    --hp-radius: 16px;
    --hp-radius-sm: 8px;
    --hp-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    --hp-glow: 0 0 30px rgba(43, 127, 255, 0.3);
    --hp-gradient: linear-gradient(135deg, #2b7fff, #22d3ee);
    --hp-transition: 0.3s ease;
    --hp-header-h: 72px;
    --hp-space-lg: 96px;
    --hp-space-sm: 48px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    background-color: var(--hp-bg-dark);
    color: var(--hp-text);
    line-height: 1.75;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a:hover {
    color: var(--hp-cyan);
}

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

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

button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: none !important;
    box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.25) !important;
}

ul,
ol {
    list-style: none;
}

/* ============ 导航头部 ============ */
.hp-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1040;
    height: var(--hp-header-h);
    background: rgba(10, 15, 30, 0.65);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.hp-header.scrolled {
    background: rgba(10, 15, 30, 0.92);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);
}

.hp-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    padding: 0 24px;
}

.hp-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.hp-logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--hp-gradient);
    color: #fff;
    font-size: 1.15rem;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(43, 127, 255, 0.35);
}

.hp-logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: #f8fafc;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.hp-nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
}

.hp-nav-menu > li {
    list-style: none;
}

.hp-nav-menu > li > a:not(.dropdown-toggle) {
    display: inline-flex;
    align-items: center;
    padding: 8px 18px;
    border-radius: 8px;
    color: var(--hp-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease, background 0.3s ease;
    position: relative;
}

.hp-nav-menu > li > a:not(.dropdown-toggle)::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 24px;
    height: 3px;
    border-radius: 2px;
    background: var(--hp-gradient);
    transition: transform 0.3s ease;
}

.hp-nav-menu > li > a:not(.dropdown-toggle):hover,
.hp-nav-menu > li > a:not(.dropdown-toggle).active {
    color: #f8fafc;
    background: rgba(255, 255, 255, 0.04);
}

.hp-nav-menu > li > a:not(.dropdown-toggle):hover::after,
.hp-nav-menu > li > a:not(.dropdown-toggle).active::after {
    transform: translateX(-50%) scaleX(1);
}

.hp-nav .dropdown > a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 8px;
    color: var(--hp-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease, background 0.3s ease;
}

.hp-nav .dropdown > a:hover {
    color: #f8fafc;
    background: rgba(255, 255, 255, 0.04);
}

.hp-nav .dropdown-menu {
    background: var(--hp-bg-secondary);
    border: 1px solid var(--hp-glass-border);
    border-radius: 12px;
    padding: 8px;
    min-width: 200px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.hp-nav .dropdown-item {
    padding: 10px 16px;
    border-radius: 8px;
    color: var(--hp-text-secondary);
    font-size: 0.92rem;
    transition: background 0.25s ease, color 0.25s ease, padding-left 0.25s ease;
}

.hp-nav .dropdown-item:hover {
    background: var(--hp-primary-soft);
    color: #f8fafc;
    padding-left: 20px;
}

.hp-nav .dropdown-item i {
    width: 18px;
    margin-right: 4px;
    color: var(--hp-cyan);
}

.hp-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--hp-glass-border);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    color: #fff;
    font-size: 1.05rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.hp-menu-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* 移动端抽屉 */
.hp-menu-offcanvas {
    background: var(--hp-bg-secondary) !important;
    max-width: 320px !important;
    border-right: 1px solid var(--hp-glass-border) !important;
}

.hp-menu-offcanvas .offcanvas-header {
    border-bottom: 1px solid var(--hp-border);
    padding: 18px 24px;
}

.hp-menu-offcanvas .offcanvas-title {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #f8fafc;
    font-size: 1.05rem;
    font-weight: 700;
}

.hp-menu-offcanvas .offcanvas-body {
    padding: 24px;
}

.hp-drawer-menu > li {
    margin-bottom: 6px;
}

.hp-drawer-menu > li > a,
.hp-drawer-subtitle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    color: var(--hp-text);
    font-size: 0.95rem;
    font-weight: 500;
    transition: background 0.25s ease, color 0.25s ease;
}

.hp-drawer-menu > li > a:hover,
.hp-drawer-menu > li > a.active {
    background: var(--hp-primary-soft);
    color: #fff;
}

.hp-drawer-menu > li > a i {
    width: 20px;
    text-align: center;
    color: var(--hp-cyan);
}

.hp-drawer-subtitle {
    color: var(--hp-text-secondary);
    font-weight: 600;
    cursor: default;
}

.hp-drawer-submenu {
    padding-left: 40px;
    margin-top: 4px;
}

.hp-drawer-submenu li {
    margin-bottom: 2px;
}

.hp-drawer-submenu a {
    display: block;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--hp-text-secondary);
    font-size: 0.88rem;
    transition: background 0.25s ease, color 0.25s ease;
}

.hp-drawer-submenu a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--hp-cyan);
}

/* 分类弹层 */
.hp-cat-offcanvas {
    background: var(--hp-bg-secondary) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--hp-glass-border) !important;
    max-height: 70vh !important;
    border-radius: 20px 20px 0 0 !important;
}

.hp-cat-offcanvas .offcanvas-header {
    border-bottom: 1px solid var(--hp-border);
    padding: 18px 24px;
}

.hp-cat-offcanvas .offcanvas-title {
    color: #f8fafc;
    font-size: 1rem;
    font-weight: 700;
}

.hp-cat-offcanvas .btn-close-white {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.hp-cat-list {
    padding: 8px 0;
}

.hp-cat-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 12px;
    border-radius: 12px;
    transition: background 0.25s ease;
    text-decoration: none;
}

.hp-cat-link:hover {
    background: rgba(255, 255, 255, 0.05);
}

.hp-cat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--hp-primary-soft);
    color: var(--hp-cyan);
    font-size: 1rem;
    flex-shrink: 0;
}

.hp-cat-info {
    flex: 1;
}

.hp-cat-info strong {
    display: block;
    color: var(--hp-text);
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.hp-cat-info small {
    color: var(--hp-text-muted);
    font-size: 0.8rem;
}

.hp-cat-link > i.fa-chevron-right {
    color: var(--hp-text-muted);
    font-size: 0.8rem;
    transition: transform 0.25s ease;
}

.hp-cat-link:hover > i.fa-chevron-right {
    transform: translateX(4px);
    color: var(--hp-cyan);
}

/* 底部 Tab */
.hp-bottom-tabbar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1050;
    height: 60px;
    background: rgba(13, 21, 40, 0.92);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    align-items: center;
    justify-content: space-around;
    padding: 4px 8px calc(4px + env(safe-area-inset-bottom, 0px));
}

.hp-tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-width: 56px;
    min-height: 44px;
    padding: 4px 10px;
    border-radius: 10px;
    color: var(--hp-text-muted);
    font-size: 0.7rem;
    text-decoration: none;
    transition: color 0.25s ease;
    background: transparent;
    border: none;
    cursor: pointer;
}

.hp-tab-item i {
    font-size: 1.1rem;
    transition: color 0.25s ease, text-shadow 0.25s ease;
}

.hp-tab-item:hover,
.hp-tab-item.active {
    color: var(--hp-cyan);
    text-decoration: none;
}

.hp-tab-item.active i {
    color: var(--hp-cyan);
    text-shadow: 0 0 14px rgba(34, 211, 238, 0.45);
}

/* ============ 文章横幅 ============ */
.hp-article-banner {
    position: relative;
    padding: calc(var(--hp-header-h) + 56px) 0 56px;
    background-size: cover;
    background-position: center center;
}

.hp-article-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10, 15, 30, 0.88) 0%, rgba(10, 15, 30, 0.78) 50%, #0a0f1e 100%);
}

.hp-article-banner-content {
    position: relative;
    z-index: 1;
    max-width: 1000px;
}

.hp-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    margin-bottom: 20px;
    font-size: 0.85rem;
    color: var(--hp-text-muted);
}

.hp-breadcrumb a {
    color: var(--hp-text-secondary);
    transition: color 0.25s ease;
}

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

.hp-breadcrumb .hp-bc-sep {
    color: var(--hp-text-muted);
    opacity: 0.6;
}

.hp-breadcrumb .hp-bc-current {
    color: var(--hp-text-secondary);
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hp-article-banner h1 {
    font-size: clamp(1.8rem, 3.2vw, 2.6rem);
    font-weight: 700;
    line-height: 1.35;
    color: #f8fafc;
    letter-spacing: 0.02em;
    text-shadow: 0 0 30px rgba(43, 127, 255, 0.25);
    margin-bottom: 20px;
}

.hp-article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    color: var(--hp-text-secondary);
    font-size: 0.88rem;
}

.hp-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    border-radius: 6px;
    background: rgba(43, 127, 255, 0.15);
    border: 1px solid rgba(43, 127, 255, 0.25);
    color: var(--hp-cyan);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.hp-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--hp-text-secondary);
    font-size: 0.85rem;
}

.hp-meta-item i {
    color: var(--hp-cyan);
    font-size: 0.8rem;
}

/* ============ 文章主体 ============ */
.hp-article-main {
    padding: 56px 0 72px;
}

.hp-article-wrap {
    max-width: 800px;
    margin: 0 auto;
}

.hp-article-content-box {
    background: var(--hp-glass-bg);
    border: 1px solid var(--hp-glass-border);
    border-radius: 20px;
    padding: 48px 48px 56px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

/* 文章内容排版 */
.hp-article-content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--hp-text);
}

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

.hp-article-content h2 {
    font-size: 1.55rem;
    font-weight: 700;
    color: #f8fafc;
    margin-top: 2.6rem;
    margin-bottom: 1rem;
    padding-left: 16px;
    border-left: 4px solid var(--hp-primary);
    line-height: 1.4;
}

.hp-article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #f8fafc;
    margin-top: 2.2rem;
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.hp-article-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--hp-text);
    margin-top: 1.8rem;
    margin-bottom: 0.6rem;
}

.hp-article-content p {
    margin-bottom: 1.5rem;
    color: var(--hp-text);
}

.hp-article-content ul,
.hp-article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.4rem;
}

.hp-article-content ul {
    list-style: disc;
}

.hp-article-content ol {
    list-style: decimal;
}

.hp-article-content li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.hp-article-content li::marker {
    color: var(--hp-cyan);
}

.hp-article-content blockquote {
    position: relative;
    border-left: 3px solid var(--hp-cyan);
    background: rgba(34, 211, 238, 0.06);
    padding: 1.2rem 1.6rem;
    border-radius: 0 12px 12px 0;
    margin: 1.8rem 0;
    color: var(--hp-text-secondary);
    font-style: normal;
}

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

.hp-article-content code:not(pre code) {
    display: inline;
    background: rgba(43, 127, 255, 0.12);
    color: #7ed0ff;
    padding: 0.2rem 0.45rem;
    border-radius: 4px;
    font-size: 0.88em;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.hp-article-content pre {
    background: #0d1528;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.5rem 1.8rem;
    border-radius: 12px;
    overflow-x: auto;
    margin: 1.8rem 0;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.3);
}

.hp-article-content pre code {
    background: none;
    color: #a5d8ff;
    padding: 0;
    font-size: 0.9rem;
    line-height: 1.7;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.hp-article-content img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    margin: 1.5rem auto;
    display: block;
}

.hp-article-content a {
    color: var(--hp-cyan);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(34, 211, 238, 0.4);
    transition: color 0.25s ease, text-decoration-color 0.25s ease;
}

.hp-article-content a:hover {
    color: #7ed0ff;
    text-decoration-color: #7ed0ff;
}

.hp-article-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.8rem 0;
    font-size: 0.92rem;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.hp-article-content th,
.hp-article-content td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    text-align: left;
}

.hp-article-content thead th {
    background: rgba(43, 127, 255, 0.15);
    font-weight: 600;
    color: #f8fafc;
    white-space: nowrap;
}

.hp-article-content tbody tr:last-child td {
    border-bottom: none;
}

.hp-article-content tbody tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* 空文章状态 */
.hp-article-empty {
    max-width: 560px;
    margin: 40px auto;
    padding: 72px 40px;
    text-align: center;
    background: var(--hp-glass-bg);
    border: 1px dashed rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.hp-empty-icon {
    font-size: 3rem;
    color: var(--hp-text-muted);
    margin-bottom: 20px;
    display: block;
}

.hp-article-empty h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #f8fafc;
    margin-bottom: 12px;
}

.hp-article-empty p {
    color: var(--hp-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 28px;
}

/* ============ 相关推荐 ============ */
.hp-related {
    padding: 0 0 80px;
}

.hp-related .hp-section-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #f8fafc;
    padding-left: 16px;
    border-left: 4px solid var(--hp-primary);
    margin-bottom: 32px;
    line-height: 1.3;
}

.hp-related-card {
    display: block;
    background: var(--hp-glass-bg);
    border: 1px solid var(--hp-glass-border);
    border-radius: var(--hp-radius);
    overflow: hidden;
    height: 100%;
    text-decoration: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--hp-shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.03);
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.hp-related-card:hover {
    transform: translateY(-6px);
    border-color: rgba(43, 127, 255, 0.5);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 40px rgba(43, 127, 255, 0.1);
    text-decoration: none;
}

.hp-related-img {
    height: 160px;
    overflow: hidden;
}

.hp-related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.hp-related-card:hover .hp-related-img img {
    transform: scale(1.05);
}

.hp-related-body {
    padding: 20px 22px 24px;
}

.hp-related-body h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: #f8fafc;
    margin-bottom: 8px;
    line-height: 1.4;
    transition: color 0.25s ease;
}

.hp-related-card:hover .hp-related-body h3 {
    color: var(--hp-cyan);
}

.hp-related-body p {
    font-size: 0.88rem;
    color: var(--hp-text-secondary);
    margin-bottom: 14px;
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hp-link-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--hp-primary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.25s ease, gap 0.25s ease;
}

.hp-related-card:hover .hp-link-more {
    color: var(--hp-cyan);
    gap: 10px;
}

.hp-back-list {
    text-align: center;
    margin-top: 40px;
}

/* ============ 按钮 ============ */
.hp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    min-height: 44px;
}

.hp-btn-primary {
    background: var(--hp-gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(43, 127, 255, 0.35), 0 0 0 0 rgba(43, 127, 255, 0);
}

.hp-btn-primary:hover {
    box-shadow: 0 6px 28px rgba(43, 127, 255, 0.55), 0 0 30px rgba(43, 127, 255, 0.25);
    color: #fff;
    transform: translateY(-2px);
}

.hp-btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--hp-text);
}

.hp-btn-outline:hover {
    border-color: var(--hp-primary);
    background: rgba(43, 127, 255, 0.1);
    color: var(--hp-cyan);
    transform: translateY(-2px);
    text-decoration: none;
}

/* ============ 页脚 ============ */
.hp-footer {
    background: #080c18;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 64px 0 32px;
    margin-top: 0;
}

.hp-footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    color: #f8fafc;
    font-size: 1.1rem;
    font-weight: 700;
}

.hp-footer-desc {
    color: var(--hp-text-muted);
    font-size: 0.88rem;
    line-height: 1.7;
    margin-bottom: 0;
}

.hp-footer h4 {
    color: #f8fafc;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

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

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

.hp-footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--hp-text-secondary);
    font-size: 0.88rem;
    transition: color 0.25s ease, padding-left 0.25s ease;
}

.hp-footer-links a:hover {
    color: var(--hp-cyan);
    padding-left: 4px;
    text-decoration: none;
}

.hp-footer-links a i {
    width: 16px;
    color: var(--hp-text-muted);
    font-size: 0.8rem;
    transition: color 0.25s ease;
}

.hp-footer-links a:hover i {
    color: var(--hp-cyan);
}

.hp-footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 24px;
    margin-top: 48px;
    color: var(--hp-text-muted);
    font-size: 0.82rem;
}

/* ============ 响应式 ============ */
@media (max-width: 991.98px) {
    .hp-nav-menu {
        display: none;
    }

    .hp-menu-btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .hp-bottom-tabbar {
        display: flex;
    }

    body {
        padding-bottom: 64px;
    }

    .hp-article-content-box {
        padding: 36px 28px 44px;
    }

    .hp-footer {
        padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px));
    }
}

@media (max-width: 767.98px) {
    .hp-article-banner {
        padding: calc(var(--hp-header-h) + 40px) 0 40px;
    }

    .hp-article-banner h1 {
        font-size: 1.65rem;
    }

    .hp-article-meta {
        gap: 10px;
        font-size: 0.8rem;
    }

    .hp-article-content-box {
        padding: 28px 20px 36px;
        border-radius: 16px;
    }

    .hp-article-content {
        font-size: 1rem;
        line-height: 1.85;
    }

    .hp-article-content h2 {
        font-size: 1.3rem;
        padding-left: 12px;
    }

    .hp-article-content h3 {
        font-size: 1.15rem;
    }

    .hp-article-content blockquote {
        padding: 1rem 1.2rem;
    }

    .hp-article-content pre {
        padding: 1.2rem 1.2rem;
        font-size: 0.82rem;
    }

    .hp-article-content table {
        font-size: 0.82rem;
    }

    .hp-article-content th,
    .hp-article-content td {
        padding: 0.6rem 0.7rem;
    }

    .hp-article-empty {
        padding: 48px 24px;
    }

    .hp-related {
        padding-bottom: 56px;
    }

    .hp-related-card {
        margin-bottom: 16px;
    }

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

@media (max-width: 575.98px) {
    .hp-article-banner h1 {
        font-size: 1.45rem;
    }

    .hp-article-banner .hp-breadcrumb {
        font-size: 0.78rem;
    }

    .hp-article-main {
        padding: 40px 0 56px;
    }

    .hp-related-body {
        padding: 16px 18px 20px;
    }

    .hp-related-img {
        height: 140px;
    }

    .hp-back-list .hp-btn {
        width: 100%;
    }

    .hp-article-content {
        font-size: 0.95rem;
    }

    .hp-article-content h2 {
        font-size: 1.2rem;
    }

    .hp-article-content h3 {
        font-size: 1.05rem;
    }

    .hp-article-content-box {
        padding: 24px 16px 32px;
    }
}

/* roulang page: category1 */
:root {
            --hp-bg-primary: #0a0f1e;
            --hp-bg-secondary: #0d1528;
            --hp-bg-tertiary: #111b33;
            --hp-primary: #2b7fff;
            --hp-accent: #22d3ee;
            --hp-gold: #f5b731;
            --hp-text-primary: #e2e8f0;
            --hp-text-secondary: #94a3b8;
            --hp-text-muted: #486084;
            --hp-border: rgba(255, 255, 255, 0.1);
            --hp-border-strong: rgba(255, 255, 255, 0.16);
            --hp-radius-lg: 16px;
            --hp-radius-md: 12px;
            --hp-radius-sm: 8px;
            --hp-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --hp-glow: 0 0 40px rgba(43, 127, 255, 0.25);
            --hp-gradient: linear-gradient(135deg, #2b7fff, #22d3ee);
            --hp-transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--hp-bg-primary);
            color: var(--hp-text-primary);
            line-height: 1.75;
            font-size: 1rem;
            overflow-x: hidden;
            padding-bottom: 64px;
        }

        @media (min-width: 992px) {
            body {
                padding-bottom: 0;
            }
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            padding-right: 24px;
            padding-left: 24px;
        }

        @media (min-width: 1200px) {
            .container,
            .container-lg,
            .container-xl,
            .container-xxl {
                max-width: 1200px;
            }
        }

        .hp-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(10, 15, 30, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--hp-border);
            transition: var(--hp-transition);
        }

        .hp-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            position: relative;
            flex-wrap: nowrap;
        }

        .hp-logo {
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
        }

        .hp-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--hp-gradient);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(43, 127, 255, 0.4);
            margin-right: 10px;
            flex-shrink: 0;
        }

        .hp-logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .hp-nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0;
            padding: 0;
        }

        .hp-nav-menu>li>a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            color: var(--hp-text-secondary);
            font-weight: 500;
            border-radius: 8px;
            position: relative;
            transition: var(--hp-transition);
        }

        .hp-nav-menu>li>a:hover,
        .hp-nav-menu>li>a.active {
            color: var(--hp-text-primary);
            background: rgba(43, 127, 255, 0.08);
        }

        .hp-nav-menu>li>a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: var(--hp-gradient);
        }

        .hp-nav .dropdown-menu {
            background: rgba(13, 21, 40, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--hp-border);
            border-radius: 14px;
            padding: 10px;
            box-shadow: var(--hp-shadow);
            min-width: 190px;
            margin-top: 8px;
        }

        .hp-nav .dropdown-item {
            padding: 10px 14px;
            border-radius: 8px;
            color: var(--hp-text-secondary);
            font-size: 0.92rem;
            transition: var(--hp-transition);
        }

        .hp-nav .dropdown-item:hover,
        .hp-nav .dropdown-item.active {
            background: rgba(43, 127, 255, 0.12);
            color: var(--hp-primary);
        }

        .hp-menu-btn {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--hp-border);
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--hp-text-primary);
            font-size: 1.1rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-shrink: 0;
        }

        .hp-menu-btn:focus {
            outline: 2px solid var(--hp-primary);
            outline-offset: 2px;
        }

        @media (max-width: 991.98px) {
            .hp-nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 16px;
                right: 16px;
                background: rgba(13, 21, 40, 0.97);
                border: 1px solid var(--hp-border);
                border-radius: 16px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: var(--hp-shadow);
                z-index: 1040;
            }
            .hp-nav-menu.open {
                display: flex;
            }
            .hp-nav-menu>li>a {
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 14px 16px;
                border-radius: 10px;
            }
            .hp-nav-menu>li>a.active::after {
                left: 16px;
                right: auto;
                bottom: 4px;
                width: 24px;
            }
            .hp-nav .dropdown-menu {
                position: static !important;
                background: transparent;
                border: none;
                box-shadow: none;
                padding: 4px 0 0 16px;
                margin: 0;
            }
            .hp-nav .dropdown-item {
                padding: 12px 14px;
            }
            .hp-menu-btn {
                display: inline-flex;
            }
        }

        @media (min-width: 992px) {
            .hp-nav .dropdown:hover>.dropdown-menu {
                display: block;
            }
        }

        .hp-category-hero {
            min-height: 50vh;
            display: flex;
            align-items: center;
            text-align: center;
            padding: 160px 0 80px;
            position: relative;
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.72) 0%, rgba(13, 21, 40, 0.88) 100%), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        }

        .hp-category-hero .hp-hero-inner {
            width: 100%;
        }

        .hp-category-hero h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.4rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
            color: #fff;
            text-shadow: 0 0 30px rgba(43, 127, 255, 0.3);
        }

        .hp-category-hero .hp-hero-sub {
            color: var(--hp-text-secondary);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 30px;
            line-height: 1.8;
        }

        .hp-breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--hp-border);
            border-radius: 40px;
            padding: 8px 20px;
            font-size: 0.85rem;
            color: var(--hp-text-secondary);
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
            flex-wrap: wrap;
            justify-content: center;
        }

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

        .hp-breadcrumb-sep {
            color: var(--hp-text-muted);
            font-size: 0.75rem;
        }

        .hp-breadcrumb .current {
            color: var(--hp-accent);
        }

        .hp-section {
            padding: 96px 0;
            position: relative;
        }

        @media (max-width: 767.98px) {
            .hp-section {
                padding: 64px 0;
            }
        }

        .hp-section-title-wrap {
            margin-bottom: 48px;
            text-align: center;
        }

        .hp-eyebrow {
            display: inline-block;
            font-size: 0.8rem;
            letter-spacing: 0.08em;
            color: var(--hp-accent);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            border-radius: 30px;
            padding: 4px 16px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .hp-section-title {
            font-size: clamp(1.8rem, 3vw, 2.3rem);
            font-weight: 700;
            position: relative;
            display: inline-block;
            padding-left: 18px;
            margin-bottom: 14px;
            text-align: center;
        }

        .hp-section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            border-radius: 4px;
            background: var(--hp-gradient);
        }

        .hp-section-title-wrap>.hp-lead-text {
            color: var(--hp-text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .hp-intro {
            background: var(--hp-bg-secondary);
            border-top: 1px solid var(--hp-border);
            border-bottom: 1px solid var(--hp-border);
        }

        .hp-intro-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--hp-border);
            border-radius: 20px;
            padding: 48px 40px;
            backdrop-filter: blur(10px);
            box-shadow: var(--hp-shadow);
            position: relative;
            overflow: hidden;
        }

        .hp-intro-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 160px;
            height: 160px;
            background: radial-gradient(circle, rgba(43, 127, 255, 0.18), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hp-intro-card h2 {
            font-size: clamp(1.6rem, 2.6vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 18px;
        }

        .hp-intro-card p {
            color: var(--hp-text-secondary);
            font-size: 1.02rem;
            line-height: 1.9;
            margin-bottom: 14px;
        }

        @media (max-width: 767.98px) {
            .hp-intro-card {
                padding: 32px 24px;
            }
        }

        .hp-flow {
            background: var(--hp-bg-primary);
        }

        .hp-timeline {
            position: relative;
            padding-left: 30px;
            max-width: 860px;
            margin: 0 auto;
        }

        .hp-timeline::before {
            content: "";
            position: absolute;
            left: 13px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(180deg, var(--hp-primary), var(--hp-accent), transparent);
            border-radius: 2px;
        }

        .hp-timeline-item {
            position: relative;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--hp-border);
            border-radius: 16px;
            padding: 26px 28px 24px;
            margin-bottom: 20px;
            transition: var(--hp-transition);
            backdrop-filter: blur(8px);
        }

        .hp-timeline-item:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.4);
            box-shadow: var(--hp-shadow), 0 0 30px rgba(43, 127, 255, 0.12);
            background: rgba(255, 255, 255, 0.06);
        }

        .hp-timeline-num {
            position: absolute;
            left: -30px;
            top: 28px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--hp-gradient);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 14px rgba(43, 127, 255, 0.5);
            border: 2px solid var(--hp-bg-primary);
        }

        .hp-timeline-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hp-timeline-item h3 i {
            color: var(--hp-accent);
            font-size: 1rem;
        }

        .hp-timeline-item p {
            color: var(--hp-text-secondary);
            margin-bottom: 12px;
            line-height: 1.8;
        }

        .hp-tag {
            display: inline-block;
            background: rgba(43, 127, 255, 0.14);
            border: 1px solid rgba(43, 127, 255, 0.2);
            color: var(--hp-accent);
            font-size: 0.8rem;
            border-radius: 6px;
            padding: 3px 12px;
        }

        .hp-capability {
            background: var(--hp-bg-secondary);
            border-top: 1px solid var(--hp-border);
        }

        .hp-cap-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--hp-border);
            border-radius: 16px;
            padding: 28px 26px;
            height: 100%;
            transition: var(--hp-transition);
            position: relative;
        }

        .hp-cap-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.4);
            background: rgba(255, 255, 255, 0.06);
            box-shadow: var(--hp-shadow), 0 0 30px rgba(43, 127, 255, 0.12);
        }

        .hp-cap-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            background: rgba(43, 127, 255, 0.14);
            color: var(--hp-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 18px;
            transition: var(--hp-transition);
        }

        .hp-cap-card:hover .hp-cap-icon {
            background: rgba(34, 211, 238, 0.2);
            color: var(--hp-accent);
            transform: scale(1.06);
        }

        .hp-cap-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .hp-cap-card p {
            color: var(--hp-text-secondary);
            font-size: 0.92rem;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .hp-checklist {
            background: var(--hp-bg-primary);
        }

        .hp-checklist-img {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--hp-shadow);
            border: 1px solid var(--hp-border);
            height: 320px;
            object-fit: cover;
            width: 100%;
        }

        .hp-checklist-list {
            margin-top: 24px;
        }

        .hp-checklist-list li {
            position: relative;
            padding: 16px 16px 16px 50px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--hp-border);
            border-radius: 12px;
            margin-bottom: 12px;
            color: var(--hp-text-primary);
            font-weight: 500;
            transition: var(--hp-transition);
        }

        .hp-checklist-list li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 18px;
            top: 16px;
            color: var(--hp-accent);
            background: rgba(34, 211, 238, 0.12);
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            line-height: 1;
        }

        .hp-checklist-list li:hover {
            border-color: rgba(43, 127, 255, 0.4);
            transform: translateX(4px);
        }

        .hp-related {
            background: var(--hp-bg-secondary);
            border-top: 1px solid var(--hp-border);
        }

        .hp-related-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--hp-border);
            border-radius: 16px;
            padding: 24px;
            height: 100%;
            transition: var(--hp-transition);
        }

        .hp-related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.4);
            box-shadow: var(--hp-shadow), 0 0 30px rgba(43, 127, 255, 0.12);
        }

        .hp-related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-radius: 12px;
            margin-bottom: 16px;
            transition: transform 0.5s ease;
        }

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

        .hp-related-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .hp-related-card p {
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .hp-related-card a {
            color: var(--hp-primary);
            font-weight: 600;
            font-size: 0.92rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hp-related-card a:hover {
            color: var(--hp-accent);
            gap: 12px;
        }

        .hp-faq {
            background: var(--hp-bg-primary);
        }

        .hp-faq-inner {
            max-width: 820px;
            margin: 0 auto;
        }

        .hp-faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--hp-border) !important;
            border-radius: 14px !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--hp-transition);
        }

        .hp-faq-item:hover {
            border-color: rgba(43, 127, 255, 0.3) !important;
        }

        .hp-faq-item {
            --bs-accordion-bg: transparent;
            --bs-accordion-border-color: var(--hp-border);
            --bs-accordion-btn-color: var(--hp-text-primary);
            --bs-accordion-btn-bg: transparent;
            --bs-accordion-active-color: var(--hp-primary);
            --bs-accordion-active-bg: rgba(43, 127, 255, 0.08);
            --bs-accordion-btn-focus-border-color: transparent;
            --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.12);
            --bs-accordion-body-color: var(--hp-text-secondary);
        }

        .hp-faq-item .accordion-button {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            box-shadow: none;
            border-radius: 14px 14px 0 0;
        }

        .hp-faq-item .accordion-button:not(.collapsed) {
            box-shadow: inset 3px 0 0 var(--hp-primary);
        }

        .hp-faq-item .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\2b";
            color: var(--hp-primary);
            width: auto;
            height: auto;
            background-size: auto;
            font-size: 0.9rem;
        }

        .hp-faq-item .accordion-button:not(.collapsed)::after {
            content: "\f068";
            transform: rotate(0);
            color: var(--hp-accent);
        }

        .hp-faq-item .accordion-body {
            padding: 0 24px 22px;
            color: var(--hp-text-secondary);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        .hp-cta {
            background: linear-gradient(180deg, var(--hp-bg-secondary) 0%, #0a0f1e 100%);
            border-top: 1px solid var(--hp-border);
        }

        .hp-cta-card {
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--hp-border);
            border-radius: 24px;
            padding: 64px 40px;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
        }

        .hp-cta-card::before {
            content: "";
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(43, 127, 255, 0.2), transparent 70%);
            pointer-events: none;
        }

        .hp-cta-card h2 {
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 14px;
        }

        .hp-cta-card p {
            color: var(--hp-text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .hp-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 34px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid transparent;
            cursor: pointer;
            min-height: 48px;
            transition: var(--hp-transition);
        }

        .hp-btn-primary {
            background: var(--hp-gradient);
            color: #fff;
            box-shadow: 0 4px 20px rgba(43, 127, 255, 0.35);
        }

        .hp-btn-primary:hover {
            box-shadow: 0 6px 30px rgba(43, 127, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        .hp-btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(43, 127, 255, 0.3);
        }

        .hp-btn-primary:focus {
            outline: 2px solid var(--hp-accent);
            outline-offset: 2px;
        }

        .hp-btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--hp-text-primary);
        }

        .hp-btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--hp-primary);
            color: #fff;
            transform: translateY(-2px);
        }

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

        .hp-btn-ghost:focus {
            outline: 2px solid var(--hp-primary);
            outline-offset: 2px;
        }

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

        .hp-footer {
            background: #080c18;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 96px;
        }

        @media (min-width: 992px) {
            .hp-footer {
                padding: 64px 0 40px;
            }
        }

        .hp-footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .hp-footer-desc {
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            max-width: 300px;
            line-height: 1.75;
        }

        .hp-footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--hp-text-primary);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .hp-footer h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            border-radius: 2px;
            background: var(--hp-gradient);
        }

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

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

        .hp-footer-links a {
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--hp-transition);
        }

        .hp-footer-links a:hover {
            color: var(--hp-primary);
            padding-left: 4px;
        }

        .hp-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--hp-text-muted);
            font-size: 0.85rem;
        }

        .hp-bottom-tab {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1020;
            display: flex;
            align-items: center;
            justify-content: space-around;
            background: rgba(10, 15, 30, 0.93);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
        }

        @media (min-width: 992px) {
            .hp-bottom-tab {
                display: none;
            }
        }

        .hp-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 0.7rem;
            color: var(--hp-text-secondary);
            background: transparent;
            border: none;
            padding: 6px 14px;
            min-width: 52px;
            min-height: 44px;
            border-radius: 10px;
            transition: var(--hp-transition);
            cursor: pointer;
        }

        .hp-tab-item i {
            font-size: 1.15rem;
            transition: var(--hp-transition);
        }

        .hp-tab-item:hover {
            color: var(--hp-text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .hp-tab-item.active {
            color: var(--hp-primary);
        }

        .hp-tab-item.active i {
            color: var(--hp-primary);
            text-shadow: 0 0 14px rgba(43, 127, 255, 0.6);
        }

        .hp-tab-sheet {
            position: fixed;
            inset: 0;
            z-index: 1050;
            display: none;
        }

        .hp-tab-sheet.show {
            display: block;
        }

        .hp-tab-sheet-mask {
            position: absolute;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .hp-tab-sheet-panel {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(13, 21, 40, 0.97);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: 20px 20px 0 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-bottom: none;
            padding: 16px 20px calc(24px + env(safe-area-inset-bottom));
            transform: translateY(0);
            transition: transform 0.3s ease;
        }

        .hp-tab-sheet-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 4px 16px;
            font-weight: 600;
            color: var(--hp-text-primary);
            border-bottom: 1px solid var(--hp-border);
            margin-bottom: 12px;
        }

        .hp-tab-sheet-head button {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--hp-border);
            background: rgba(255, 255, 255, 0.06);
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--hp-transition);
        }

        .hp-tab-sheet-head button:hover {
            color: var(--hp-text-primary);
            border-color: var(--hp-primary);
        }

        .hp-tab-sheet-panel>a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            border-radius: 12px;
            color: var(--hp-text-primary);
            font-weight: 500;
            font-size: 0.95rem;
            margin-bottom: 6px;
            transition: var(--hp-transition);
        }

        .hp-tab-sheet-panel>a i {
            color: var(--hp-accent);
            width: 20px;
            text-align: center;
        }

        .hp-tab-sheet-panel>a:hover,
        .hp-tab-sheet-panel>a.active {
            background: rgba(43, 127, 255, 0.12);
            color: var(--hp-primary);
            padding-left: 20px;
        }

        @media (min-width: 768px) {
            .hp-checklist-img {
                height: 380px;
            }
        }

        @media (max-width: 575.98px) {
            .hp-category-hero {
                padding: 120px 0 56px;
                min-height: 42vh;
            }
            .hp-timeline {
                padding-left: 24px;
            }
            .hp-timeline::before {
                left: 11px;
            }
            .hp-timeline-num {
                left: -24px;
                width: 24px;
                height: 24px;
                font-size: 0.65rem;
            }
            .hp-timeline-item {
                padding: 20px 18px 18px;
            }
            .hp-cta-card {
                padding: 40px 20px;
            }
            .hp-cta-actions {
                flex-direction: column;
            }
            .hp-cta-actions .hp-btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --hp-bg: #0a0f1e;
            --hp-bg-secondary: #0d1528;
            --hp-bg-tertiary: #111b33;
            --hp-glass-bg: rgba(255, 255, 255, 0.05);
            --hp-glass-border: rgba(255, 255, 255, 0.1);
            --hp-primary: #2b7fff;
            --hp-cyan: #22d3ee;
            --hp-amber: #f5b731;
            --hp-text: #e2e8f0;
            --hp-text-secondary: #94a3b8;
            --hp-text-muted: #475569;
            --hp-gradient: linear-gradient(135deg, #2b7fff, #22d3ee);
            --hp-radius-lg: 16px;
            --hp-radius-md: 8px;
            --hp-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --hp-transition: all 0.3s ease;
            --hp-gutter: 24px;
            --hp-section-pad: 96px;
            --hp-section-pad-mobile: 64px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--hp-bg);
            color: var(--hp-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            padding-bottom: 64px;
        }

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

        a:hover {
            color: #67e8f9;
        }

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

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

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header & Nav ===== */
        .hp-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(10, 15, 30, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--hp-transition);
        }

        .hp-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .hp-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            padding: 0 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

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

        .hp-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--hp-gradient);
            border-radius: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 4px 16px rgba(43, 127, 255, 0.35);
        }

        .hp-logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--hp-text);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .hp-nav-menu > li {
            position: relative;
        }

        .hp-nav-menu > li > a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            color: var(--hp-text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--hp-radius-md);
            transition: var(--hp-transition);
            position: relative;
        }

        .hp-nav-menu > li > a:hover {
            color: var(--hp-text);
            background: rgba(255, 255, 255, 0.04);
        }

        .hp-nav-menu > li > a.active {
            color: var(--hp-text);
        }

        .hp-nav-menu > li > a.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--hp-gradient);
            border-radius: 2px;
            box-shadow: 0 0 12px rgba(43, 127, 255, 0.6);
        }

        .hp-nav-menu .dropdown-menu {
            background: rgba(13, 21, 40, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--hp-glass-border);
            border-radius: 12px;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
            padding: 8px;
            min-width: 180px;
        }

        .hp-nav-menu .dropdown-menu li a {
            display: block;
            padding: 10px 14px;
            color: var(--hp-text-secondary);
            border-radius: 8px;
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--hp-transition);
        }

        .hp-nav-menu .dropdown-menu li a:hover {
            color: var(--hp-text);
            background: rgba(43, 127, 255, 0.12);
        }

        .hp-menu-btn {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--hp-glass-border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            color: var(--hp-text);
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--hp-transition);
        }

        .hp-menu-btn:hover,
        .hp-menu-btn:focus {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(43, 127, 255, 0.4);
            outline: none;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            padding: 160px 0 100px;
            background: linear-gradient(180deg, rgba(10, 15, 30, 0.75) 0%, rgba(10, 15, 30, 0.9) 60%, var(--hp-bg) 100%), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        }

        .page-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            font-size: 0.85rem;
            color: var(--hp-text-secondary);
        }

        .page-hero .breadcrumb li + li::before {
            content: "›";
            margin: 0 8px;
            color: var(--hp-text-muted);
        }

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

        .page-hero .breadcrumb a:hover {
            color: var(--hp-cyan);
        }

        .page-hero .breadcrumb .active {
            color: var(--hp-cyan);
        }

        .page-hero h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.5rem);
            font-weight: 700;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
            color: var(--hp-text);
            text-shadow: 0 0 30px rgba(43, 127, 255, 0.3);
        }

        .page-hero p {
            font-size: 1.1rem;
            color: var(--hp-text-secondary);
            max-width: 640px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-hp-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--hp-gradient);
            color: #fff;
            border: none;
            border-radius: var(--hp-radius-md);
            font-size: 1rem;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(43, 127, 255, 0.35);
            transition: var(--hp-transition);
            cursor: pointer;
        }

        .btn-hp-primary:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(43, 127, 255, 0.5);
        }

        .btn-hp-primary:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.3);
        }

        .btn-hp-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: var(--hp-text);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--hp-radius-md);
            font-size: 1rem;
            font-weight: 500;
            transition: var(--hp-transition);
            cursor: pointer;
        }

        .btn-hp-outline:hover {
            border-color: rgba(43, 127, 255, 0.5);
            color: var(--hp-cyan);
            transform: translateY(-2px);
            background: rgba(43, 127, 255, 0.08);
        }

        .btn-hp-outline:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.2);
        }

        /* ===== Section Common ===== */
        .section-padding {
            padding: var(--hp-section-pad) 0;
        }

        .section-title {
            font-size: clamp(1.75rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hp-text);
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            background: var(--hp-gradient);
            border-radius: 2px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--hp-text-secondary);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.7;
        }

        /* ===== Split Section (左右分栏) ===== */
        .split-section {
            padding: var(--hp-section-pad) 0;
            background: var(--hp-bg);
        }

        .split-content h2 {
            font-size: clamp(1.75rem, 2.5vw, 2rem);
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--hp-text);
        }

        .split-content > p {
            color: var(--hp-text-secondary);
            margin-bottom: 24px;
            line-height: 1.75;
            font-size: 1rem;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .feature-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: 12px;
            padding: 16px;
            transition: var(--hp-transition);
        }

        .feature-item:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(43, 127, 255, 0.3);
            transform: translateX(4px);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(43, 127, 255, 0.15);
            border-radius: 10px;
            color: var(--hp-cyan);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .feature-item h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--hp-text);
        }

        .feature-item p {
            font-size: 0.88rem;
            color: var(--hp-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .split-visual {
            position: relative;
        }

        .split-img-wrap {
            position: relative;
            border-radius: var(--hp-radius-lg);
            overflow: hidden;
            border: 1px solid var(--hp-glass-border);
            box-shadow: var(--hp-shadow);
        }

        .split-img-wrap img {
            width: 100%;
            display: block;
            object-fit: cover;
            min-height: 300px;
        }

        .split-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 15, 30, 0.85) 100%);
        }

        .overlay-stats {
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 20px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .stat-chip {
            background: rgba(13, 21, 40, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 12px 16px;
            min-width: 110px;
            flex: 1;
        }

        .stat-chip .num {
            font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
            font-size: 1.6rem;
            font-weight: 700;
            background: var(--hp-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
            line-height: 1.3;
        }

        .stat-chip .lbl {
            font-size: 0.78rem;
            color: var(--hp-text-secondary);
            display: block;
            margin-top: 2px;
        }

        /* ===== Data Section (数据引用) ===== */
        .data-section {
            padding: var(--hp-section-pad) 0;
            background: var(--hp-bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .data-section::before {
            content: "";
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(43, 127, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .data-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--hp-shadow);
            position: relative;
            overflow: hidden;
            height: 100%;
            transition: var(--hp-transition);
        }

        .data-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.3);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

        .data-card .icon {
            font-size: 1.6rem;
            color: var(--hp-cyan);
            margin-bottom: 12px;
            display: block;
        }

        .data-num {
            font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
            font-size: 2.4rem;
            font-weight: 700;
            background: var(--hp-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            display: block;
            margin-bottom: 8px;
        }

        .data-label {
            font-size: 0.9rem;
            color: var(--hp-text-secondary);
            margin: 0;
        }

        .data-card::after {
            content: "";
            display: block;
            width: 40px;
            height: 3px;
            background: var(--hp-gradient);
            border-radius: 3px;
            margin: 16px auto 0;
        }

        /* ===== Flow Section (信息图/流程) ===== */
        .flow-section {
            padding: var(--hp-section-pad) 0;
            background: var(--hp-bg);
        }

        .flow-steps {
            position: relative;
            display: flex;
            gap: 24px;
            margin-top: 48px;
        }

        .flow-step-card {
            flex: 1;
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius-lg);
            padding: 32px 24px;
            position: relative;
            transition: var(--hp-transition);
            height: 100%;
        }

        .flow-step-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.3);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
        }

        .flow-step-num {
            font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
            font-size: 3rem;
            font-weight: 700;
            background: var(--hp-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            display: block;
            margin-bottom: 16px;
            opacity: 0.8;
        }

        .flow-step-icon {
            font-size: 1.4rem;
            color: var(--hp-cyan);
            margin-bottom: 12px;
            display: block;
        }

        .flow-step-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--hp-text);
        }

        .flow-step-card p {
            font-size: 0.88rem;
            color: var(--hp-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        .flow-connector {
            position: absolute;
            top: 50%;
            right: -24px;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, rgba(43, 127, 255, 0.5), rgba(34, 211, 238, 0.2));
            z-index: 2;
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: var(--hp-section-pad) 0;
            background: var(--hp-bg-secondary);
        }

        .related-card {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: var(--hp-radius-lg);
            overflow: hidden;
            height: 100%;
            transition: var(--hp-transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(43, 127, 255, 0.35);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
        }

        .related-img-wrap {
            height: 160px;
            overflow: hidden;
            position: relative;
        }

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

        .related-card:hover .related-img-wrap img {
            transform: scale(1.05);
        }

        .related-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(10, 15, 30, 0.6) 100%);
        }

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

        .related-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--hp-text);
        }

        .related-body p {
            font-size: 0.88rem;
            color: var(--hp-text-secondary);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .related-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--hp-cyan);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--hp-transition);
        }

        .related-link:hover {
            gap: 10px;
            color: #67e8f9;
        }

        .related-link i {
            font-size: 0.8rem;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--hp-section-pad) 0;
            background: var(--hp-bg);
        }

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

        .accordion-item {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--hp-transition);
        }

        .accordion-item:hover {
            border-color: rgba(255, 255, 255, 0.16);
        }

        .accordion-button {
            background: transparent;
            border: none;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--hp-text);
            width: 100%;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            border-bottom: 1px solid transparent;
            transition: var(--hp-transition);
        }

        .accordion-button:not(.collapsed) {
            color: var(--hp-cyan);
            border-bottom-color: rgba(255, 255, 255, 0.05);
            background: rgba(43, 127, 255, 0.06);
        }

        .accordion-button:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 127, 255, 0.15);
        }

        .accordion-button::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--hp-text-secondary);
            transition: transform 0.3s ease;
            background: none;
            width: auto;
            height: auto;
        }

        .accordion-button:not(.collapsed)::after {
            content: "\f068";
            color: var(--hp-cyan);
            transform: rotate(0deg);
        }

        .accordion-body {
            padding: 16px 20px;
            color: var(--hp-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            background: rgba(255, 255, 255, 0.02);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--hp-section-pad) 0;
            background: linear-gradient(180deg, var(--hp-bg-secondary) 0%, var(--hp-bg) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            bottom: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(43, 127, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-box {
            background: var(--hp-glass-bg);
            border: 1px solid var(--hp-glass-border);
            border-radius: 20px;
            padding: 48px;
            text-align: center;
            box-shadow: var(--hp-shadow);
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hp-text);
        }

        .cta-box p {
            font-size: 1rem;
            color: var(--hp-text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

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

        /* ===== Footer ===== */
        .hp-footer {
            background: #080c18;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 24px;
        }

        .hp-footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--hp-text);
        }

        .hp-footer-desc {
            font-size: 0.88rem;
            color: var(--hp-text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .hp-footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--hp-text);
            margin-bottom: 16px;
        }

        .hp-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .hp-footer-links a {
            color: var(--hp-text-secondary);
            font-size: 0.88rem;
            transition: var(--hp-transition);
        }

        .hp-footer-links a:hover {
            color: var(--hp-cyan);
            text-decoration: none;
        }

        .hp-footer-links a i {
            width: 20px;
            color: var(--hp-text-muted);
        }

        .hp-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 48px;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--hp-text-muted);
        }

        /* ===== Mobile Bottom Tabs ===== */
        .hp-mobile-tabs {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            display: none;
            background: rgba(10, 15, 30, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            height: 64px;
            padding: 0 8px;
        }

        .hp-tab {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            color: var(--hp-text-secondary);
            font-size: 0.75rem;
            font-weight: 500;
            text-decoration: none;
            transition: var(--hp-transition);
            min-height: 56px;
            border-radius: 8px;
            padding: 6px 4px;
        }

        .hp-tab i {
            font-size: 1.15rem;
            color: var(--hp-text-secondary);
            transition: var(--hp-transition);
        }

        .hp-tab:hover,
        .hp-tab:focus {
            color: var(--hp-text);
            background: rgba(255, 255, 255, 0.04);
            text-decoration: none;
        }

        .hp-tab.active {
            color: var(--hp-cyan);
        }

        .hp-tab.active i {
            color: var(--hp-cyan);
            text-shadow: 0 0 16px rgba(34, 211, 238, 0.5);
        }

        .hp-tab.active::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 2px;
            background: var(--hp-gradient);
            border-radius: 2px;
        }

        /* ===== Category Sheet ===== */
        .hp-sheet-mask {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            z-index: 1050;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

        .hp-sheet-mask.open {
            opacity: 1;
            visibility: visible;
        }

        .hp-category-sheet {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1060;
            background: rgba(13, 21, 40, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px 20px 0 0;
            padding: 28px 24px calc(24px + env(safe-area-inset-bottom));
            transform: translateY(100%);
            transition: transform 0.35s ease;
        }

        .hp-category-sheet.open {
            transform: translateY(0);
        }

        .hp-category-sheet h5 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--hp-text);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hp-category-sheet h5 i {
            color: var(--hp-cyan);
        }

        .hp-category-sheet a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: 12px;
            color: var(--hp-text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--hp-transition);
            margin-bottom: 10px;
        }

        .hp-category-sheet a i {
            width: 20px;
            color: var(--hp-cyan);
            font-size: 0.9rem;
        }

        .hp-category-sheet a:hover {
            background: rgba(43, 127, 255, 0.1);
            color: var(--hp-text);
            text-decoration: none;
        }

        .hp-category-sheet a.active {
            background: rgba(43, 127, 255, 0.15);
            color: var(--hp-cyan);
            border: 1px solid rgba(43, 127, 255, 0.2);
        }

        .hp-sheet-close {
            width: 100%;
            padding: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--hp-glass-border);
            border-radius: 10px;
            color: var(--hp-text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--hp-transition);
            margin-top: 8px;
        }

        .hp-sheet-close:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--hp-text);
        }

        /* ===== Responsive ===== */
        @media (min-width: 992px) {
            .hp-desktop-only {
                display: flex !important;
            }
            .hp-mobile-only {
                display: none !important;
            }
        }

        @media (max-width: 991.98px) {
            .hp-menu-btn {
                display: inline-flex;
            }

            .hp-nav-menu {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(10, 15, 30, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                border-bottom: 1px solid var(--hp-glass-border);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
                display: none;
                z-index: 1045;
                max-height: calc(100vh - 68px);
                overflow-y: auto;
            }

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

            .hp-nav-menu > li {
                width: 100%;
            }

            .hp-nav-menu > li > a {
                width: 100%;
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: 10px;
            }

            .hp-nav-menu > li > a.active::after {
                display: none;
            }

            .hp-nav-menu > li > a.active {
                background: rgba(43, 127, 255, 0.12);
                color: var(--hp-cyan);
            }

            .hp-nav-menu .dropdown-menu {
                position: static !important;
                box-shadow: none;
                border: none;
                background: rgba(255, 255, 255, 0.03);
                border-radius: 10px;
                margin: 4px 0 4px 16px;
                min-width: auto;
                padding: 4px;
                display: none;
            }

            .hp-nav-menu .dropdown-menu.show {
                display: block;
            }

            .hp-mobile-tabs {
                display: flex;
            }

            .hp-tab {
                position: relative;
            }

            body {
                padding-bottom: 64px;
            }

            .section-padding {
                padding: var(--hp-section-pad-mobile) 0;
            }

            .split-section,
            .data-section,
            .flow-section,
            .related-section,
            .faq-section,
            .cta-section {
                padding: var(--hp-section-pad-mobile) 0;
            }

            .page-hero {
                padding: 120px 0 70px;
            }

            .flow-steps {
                flex-direction: column;
                gap: 16px;
            }

            .flow-connector {
                display: none;
            }

            .cta-box {
                padding: 36px 24px;
            }
        }

        @media (max-width: 767.98px) {
            .page-hero h1 {
                font-size: 2rem;
            }

            .page-hero p {
                font-size: 0.95rem;
            }

            .split-visual {
                margin-top: 32px;
            }

            .overlay-stats {
                flex-direction: column;
            }

            .data-card {
                padding: 24px 16px;
                margin-bottom: 16px;
            }

            .data-num {
                font-size: 2rem;
            }

            .cta-box {
                padding: 32px 20px;
            }

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

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

        @media (max-width: 575.98px) {
            .hp-logo-text {
                font-size: 1rem;
            }

            .hp-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }

            .page-hero {
                padding: 110px 0 60px;
            }

            .page-hero .hero-btns {
                flex-direction: column;
            }

            .page-hero .hero-btns .btn-hp-primary,
            .page-hero .hero-btns .btn-hp-outline {
                width: 100%;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .feature-item {
                padding: 14px;
            }

            .related-card {
                margin-bottom: 16px;
            }
        }

/* roulang page: category3 */
:root {
  --hp-bg: #0a0f1e;
  --hp-bg-2: #0d1528;
  --hp-bg-3: #111b33;
  --hp-primary: #2b7fff;
  --hp-cyan: #22d3ee;
  --hp-amber: #f5b731;
  --hp-text: #e2e8f0;
  --hp-text-2: #94a3b8;
  --hp-text-3: #475569;
  --hp-border: rgba(255,255,255,0.1);
  --hp-glass: rgba(255,255,255,0.05);
  --hp-radius: 16px;
  --hp-radius-sm: 8px;
  --hp-shadow: 0 8px 32px rgba(0,0,0,0.35);
  --hp-grad: linear-gradient(135deg, #2b7fff, #22d3ee);
  --hp-space: 96px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--hp-bg);
  color: var(--hp-text);
  line-height: 1.75;
  overflow-x: hidden;
}
a { color: var(--hp-cyan); text-decoration: none; }
a:hover { color: var(--hp-cyan); }
img { max-width: 100%; }
.container { max-width: 1200px; }
body { padding-bottom: 64px; }
@media (min-width:992px) { body { padding-bottom: 0; } }

.hp-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1040;
  background: rgba(10,15,30,0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background .3s, box-shadow .3s, border-color .3s;
}
.hp-header.scrolled {
  background: rgba(8,12,24,0.92);
  border-bottom-color: var(--hp-border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
}
.hp-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.hp-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--hp-text);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  line-height: 1;
}
.hp-logo:hover { color: var(--hp-text); }
.hp-logo-icon {
  width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--hp-grad);
  color: #fff;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  box-shadow: 0 0 20px rgba(43,127,255,0.35);
}
.hp-logo-text { white-space: nowrap; }

.hp-nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.hp-nav-menu > li { position: relative; }
.hp-nav-menu > li > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  color: var(--hp-text-2);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--hp-radius-sm);
  transition: color .25s, background .25s;
  position: relative;
}
.hp-nav-menu > li > a:hover {
  color: var(--hp-text);
  background: rgba(255,255,255,0.04);
}
.hp-nav-menu > li > a.active {
  color: #fff;
  background: rgba(43,127,255,0.12);
}
.hp-nav-menu > li > a.active::after {
  content: "";
  position: absolute;
  left: 18px; right: 18px; bottom: 4px;
  height: 2px;
  background: var(--hp-grad);
  border-radius: 2px;
}
.hp-nav-menu .dropdown-menu {
  background: rgba(13,21,40,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--hp-border);
  border-radius: 14px;
  box-shadow: var(--hp-shadow);
  padding: 10px;
  margin-top: 10px;
  min-width: 220px;
}
.hp-nav-menu .dropdown-menu li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  color: var(--hp-text-2);
  border-radius: 10px;
  font-size: 0.95rem;
  transition: all .25s;
}
.hp-nav-menu .dropdown-menu li a:hover {
  background: rgba(43,127,255,0.12);
  color: #fff;
}
.hp-nav-menu .dropdown-menu li a.active {
  background: rgba(43,127,255,0.18);
  color: var(--hp-cyan);
  font-weight: 600;
}
.hp-menu-btn {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--hp-border);
  background: rgba(255,255,255,0.05);
  color: var(--hp-text);
  border-radius: var(--hp-radius-sm);
  font-size: 1.1rem;
  align-items: center;
  justify-content: center;
  transition: all .25s;
}
.hp-menu-btn:hover {
  border-color: var(--hp-primary);
  color: var(--hp-cyan);
}

.hp-banner {
  min-height: 62vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, rgba(10,15,30,0.92) 0%, rgba(13,21,40,0.75) 100%), url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  position: relative;
}
.hp-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--hp-bg) 0%, transparent 45%);
  pointer-events: none;
}
.hp-banner .container { position: relative; z-index: 2; }
.hp-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--hp-border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--hp-text-2);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.hp-breadcrumb a { color: var(--hp-text-2); }
.hp-breadcrumb a:hover { color: var(--hp-cyan); }
.hp-breadcrumb i { font-size: 0.7rem; color: var(--hp-text-3); }
.hp-banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(245,183,49,0.12);
  border: 1px solid rgba(245,183,49,0.25);
  color: var(--hp-amber);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hp-banner h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 0 30px rgba(43,127,255,0.3);
  margin-bottom: 18px;
  max-width: 780px;
}
.hp-banner-lead {
  font-size: 1.15rem;
  color: var(--hp-text-2);
  max-width: 720px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hp-banner-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hp-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: var(--hp-grad);
  color: #fff !important;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--hp-radius-sm);
  border: none;
  box-shadow: 0 0 24px rgba(43,127,255,0.35);
  transition: all .3s;
  cursor: pointer;
}
.hp-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(43,127,255,0.5);
  color: #fff;
}
.hp-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  background: transparent;
  color: var(--hp-text);
  font-weight: 500;
  font-size: 1rem;
  border-radius: var(--hp-radius-sm);
  border: 1px solid rgba(255,255,255,0.2);
  transition: all .3s;
  cursor: pointer;
}
.hp-btn-ghost:hover {
  border-color: var(--hp-primary);
  color: var(--hp-cyan);
  background: rgba(43,127,255,0.08);
}

.hp-section { padding: var(--hp-space) 0; }
.hp-section-alt { background: var(--hp-bg-2); }
.hp-section-head { max-width: 760px; margin-bottom: 48px; }
.hp-section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--hp-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  text-transform: none;
}
.hp-section-title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
  padding-left: 16px;
}
.hp-section-title::before {
  content: "";
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 4px;
  background: var(--hp-grad);
  border-radius: 4px;
}
.hp-section-desc {
  color: var(--hp-text-2);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 0;
}

.hp-steps .row { margin-top: 24px; }
.hp-step-card {
  background: var(--hp-glass);
  border: 1px solid var(--hp-border);
  border-radius: var(--hp-radius);
  padding: 28px 20px;
  height: 100%;
  text-align: center;
  position: relative;
  box-shadow: var(--hp-shadow);
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.hp-step-card:hover {
  transform: translateY(-4px);
  border-color: rgba(43,127,255,0.5);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 24px rgba(43,127,255,0.12);
}
.hp-step-num {
  width: 56px; height: 56px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hp-grad);
  color: #fff;
  font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(43,127,255,0.35);
}
.hp-step-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}
.hp-step-card p {
  font-size: 0.9rem;
  color: var(--hp-text-2);
  margin-bottom: 0;
  line-height: 1.7;
}

.hp-capabilities .row { margin-top: 24px; }
.hp-cap-card {
  background: var(--hp-glass);
  border: 1px solid var(--hp-border);
  border-radius: var(--hp-radius);
  padding: 28px;
  height: 100%;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--hp-shadow);
  transition: all .3s;
}
.hp-cap-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34,211,238,0.4);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 24px rgba(34,211,238,0.1);
}
.hp-cap-icon {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(43,127,255,0.14);
  color: var(--hp-cyan);
  font-size: 1.2rem;
  border-radius: 12px;
  margin-bottom: 20px;
  transition: all .3s;
}
.hp-cap-card:hover .hp-cap-icon {
  background: var(--hp-grad);
  color: #fff;
  box-shadow: 0 0 20px rgba(43,127,255,0.35);
}
.hp-cap-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}
.hp-cap-card p {
  font-size: 0.92rem;
  color: var(--hp-text-2);
  line-height: 1.7;
  margin-bottom: 0;
}

.hp-promise {
  background: linear-gradient(135deg, rgba(43,127,255,0.10), rgba(34,211,238,0.08)), var(--hp-bg-3);
  position: relative;
  overflow: hidden;
}
.hp-promise .container { position: relative; z-index: 2; }
.hp-promise-grid .row { margin-top: 24px; }
.hp-promise-item { text-align: center; padding: 24px 16px; }
.hp-promise-num {
  font-size: 2.8rem;
  font-weight: 700;
  font-family: "DIN Alternate", "Bahnschrift", "Arial Narrow", sans-serif;
  background: var(--hp-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.hp-promise-label {
  color: var(--hp-text-2);
  font-size: 0.95rem;
  margin-top: 8px;
}

.hp-related-card {
  background: var(--hp-glass);
  border: 1px solid var(--hp-border);
  border-radius: var(--hp-radius);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--hp-shadow);
  transition: all .3s;
}
.hp-related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(43,127,255,0.5);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4), 0 0 24px rgba(43,127,255,0.15);
}
.hp-related-card .img-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.hp-related-card .img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s;
}
.hp-related-card:hover .img-wrap img { transform: scale(1.05); }
.hp-related-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.hp-related-body h3 { font-size: 1.1rem; font-weight: 600; color: #fff; margin-bottom: 10px; }
.hp-related-body p { font-size: 0.9rem; color: var(--hp-text-2); line-height: 1.7; margin-bottom: 14px; flex: 1; }
.hp-related-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--hp-cyan);
  font-size: 0.92rem;
  font-weight: 500;
  transition: gap .3s, color .3s;
}
.hp-related-link:hover { gap: 10px; color: #fff; }
.hp-related-link.active {
  color: var(--hp-amber);
  pointer-events: none;
}

.hp-faq .accordion-item {
  background: var(--hp-glass);
  border: 1px solid var(--hp-border) !important;
  border-radius: 12px !important;
  margin-bottom: 12px;
  overflow: hidden;
  backdrop-filter: blur(8px);
  box-shadow: var(--hp-shadow);
  transition: border-color .3s, box-shadow .3s;
}
.hp-faq .accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(43,127,255,0.5) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 20px rgba(43,127,255,0.1);
}
.hp-faq .accordion-button {
  background: transparent;
  color: var(--hp-text);
  font-weight: 500;
  font-size: 1.05rem;
  padding: 20px 20px 20px 24px;
  box-shadow: none;
  border: none;
  border-radius: 12px !important;
  position: relative;
  transition: color .3s;
}
.hp-faq .accordion-button:not(.collapsed) {
  color: var(--hp-cyan);
  background: transparent;
}
.hp-faq .accordion-button::before {
  content: "";
  position: absolute;
  left: 8px; top: 18px; bottom: 18px;
  width: 3px;
  background: transparent;
  border-radius: 3px;
  transition: background .3s;
}
.hp-faq .accordion-button:not(.collapsed)::before { background: var(--hp-grad); }
.hp-faq .accordion-button::after {
  content: "\f067";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  background: none;
  width: auto; height: auto;
  color: var(--hp-text-2);
  font-size: 0.9rem;
  transition: transform .35s, color .3s;
}
.hp-faq .accordion-button:not(.collapsed)::after {
  content: "\f068";
  background: none;
  color: var(--hp-cyan);
  transform: none;
}
.hp-faq .accordion-button:hover::after { color: var(--hp-cyan); }
.hp-faq .accordion-body {
  color: var(--hp-text-2);
  line-height: 1.75;
  font-size: 0.95rem;
  padding: 0 24px 20px 24px;
}

.hp-cta {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(135deg, rgba(10,15,30,0.9), rgba(13,21,40,0.82)), url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
}
.hp-cta-inner {
  background: var(--hp-glass);
  border: 1px solid var(--hp-border);
  border-radius: 20px;
  padding: 48px;
  text-align: center;
  backdrop-filter: blur(12px);
  box-shadow: var(--hp-shadow);
}
.hp-cta-inner h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.hp-cta-inner p {
  color: var(--hp-text-2);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto 28px;
  line-height: 1.8;
}
.hp-cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }

.hp-footer {
  background: #080c18;
  border-top: 1px solid var(--hp-border);
  padding: 64px 0 0;
}
.hp-footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.hp-footer-brand .hp-logo-icon { width: 36px; height: 36px; font-size: 1rem; }
.hp-footer-desc {
  color: var(--hp-text-2);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
}
.hp-footer h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 18px;
}
.hp-footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
}
.hp-footer-links li { margin-bottom: 10px; }
.hp-footer-links a {
  color: var(--hp-text-2);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color .3s, padding-left .3s;
}
.hp-footer-links a:hover {
  color: var(--hp-cyan);
  padding-left: 4px;
}
.hp-footer-bottom {
  margin-top: 48px;
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--hp-text-3);
  font-size: 0.85rem;
}

.hp-mobile-tab {
  display: flex;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 56px;
  z-index: 1050;
  background: rgba(10,15,30,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--hp-border);
}
.hp-mobile-tab .hp-tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: none;
  background: none;
  color: var(--hp-text-2);
  font-size: 0.65rem;
  line-height: 1.2;
  min-height: 44px;
  transition: color .3s;
}
.hp-mobile-tab .hp-tab-item i { font-size: 1.1rem; }
.hp-mobile-tab .hp-tab-item:hover,
.hp-mobile-tab .hp-tab-item.active {
  color: var(--hp-cyan);
}
.hp-mobile-tab .hp-tab-item.active i {
  text-shadow: 0 0 12px rgba(34,211,238,0.6);
}

.hp-sheet-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1055;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}
.hp-sheet-backdrop.open { opacity: 1; visibility: visible; }
.hp-sheet {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 1060;
  background: rgba(13,21,40,0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 20px 20px 0 0;
  border: 1px solid var(--hp-border);
  border-bottom: none;
  padding: 20px 20px calc(20px + env(safe-area-inset-bottom));
  transform: translateY(105%);
  transition: transform .35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 -8px 40px rgba(0,0,0,0.4);
}
.hp-sheet.open { transform: translateY(0); }
.hp-sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  color: #fff;
  font-weight: 600;
  font-size: 1.05rem;
}
.hp-sheet-close {
  width: 32px; height: 32px;
  border: 1px solid var(--hp-border);
  background: rgba(255,255,255,0.05);
  color: var(--hp-text-2);
  border-radius: 50%;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .3s;
}
.hp-sheet-close:hover { color: #fff; border-color: var(--hp-primary); }
.hp-sheet ul { list-style: none; margin: 0; padding: 0; }
.hp-sheet ul li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  color: var(--hp-text-2);
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 500;
  transition: background .3s, color .3s, padding-left .3s;
}
.hp-sheet ul li a i { width: 20px; text-align: center; color: var(--hp-cyan); }
.hp-sheet ul li a:hover {
  background: rgba(43,127,255,0.12);
  color: #fff;
  padding-left: 20px;
}
.hp-sheet ul li a.active {
  background: rgba(43,127,255,0.18);
  color: var(--hp-cyan);
}

@media (min-width:992px) {
  .hp-mobile-tab { display: none; }
  .hp-sheet {
    left: 50%;
    right: auto;
    bottom: 20px;
    width: 420px;
    border-radius: 20px;
    transform: translateX(-50%) translateY(105%);
  }
  .hp-sheet.open { transform: translateX(-50%) translateY(0); }
}

@media (max-width: 991.98px) {
  .hp-menu-btn {
    display: inline-flex;
  }
  .hp-nav-menu {
    position: fixed;
    top: 72px;
    left: 0; right: 0;
    background: rgba(8,12,24,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--hp-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  }
  .hp-nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .hp-nav-menu > li > a {
    padding: 14px 16px;
    font-size: 1.05rem;
    justify-content: space-between;
  }
  .hp-nav-menu > li > a.active::after { display: none; }
  .hp-nav-menu .dropdown-menu {
    position: static !important;
    transform: none !important;
    box-shadow: none;
    background: rgba(255,255,255,0.03);
    margin: 4px 0 8px;
    padding: 6px;
  }
  .hp-section { --hp-space: 64px; }
  .hp-banner { min-height: auto; padding: 130px 0 56px; }
  .hp-banner h1 { font-size: 2.2rem; }
  .hp-cta-inner { padding: 32px 20px; }
  .hp-cta-inner h2 { font-size: 1.6rem; }
}

@media (max-width: 575.98px) {
  .hp-banner { padding-top: 120px; }
  .hp-banner-lead { font-size: 1rem; }
  .hp-section-title { font-size: 1.55rem; }
  .hp-step-card { padding: 24px 16px; }
  .hp-promise-num { font-size: 2.2rem; }
  .hp-footer-bottom { justify-content: center; text-align: center; }
}