/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-bg-base: #050B14;
            --color-bg-elev: #0A1424;
            --color-glass: rgba(14, 28, 48, 0.62);
            --color-glass-strong: rgba(10, 20, 35, 0.82);
            --color-primary: #22D3EE;
            --color-primary-dim: #0E7C94;
            --color-accent: #F5B84B;
            --color-line: rgba(140, 190, 255, 0.16);
            --color-line-strong: rgba(34, 211, 238, 0.45);
            --color-text-hi: #E9F1FB;
            --color-text-body: #B4C4DA;
            --color-text-low: #6C82A3;
            --color-success: #34D399;
            --color-warning: #FBBF24;
            --radius-card: 16px;
            --radius-small: 8px;
            --radius-btn: 12px;
            --gap-lg: 80px;
            --gap-md: 48px;
            --max-width: 1320px;
            --transition: all 0.3s ease;
        }

        /* ===== Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-body);
            background: var(--color-bg-base);
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-text-hi);
            font-weight: 700;
            letter-spacing: 0.01em;
            line-height: 1.3;
        }
        p {
            margin-bottom: 1rem;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 背景纹理 ===== */
        .bg-texture {
            position: relative;
        }
        .bg-texture::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(rgba(140, 190, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(140, 190, 255, 0.04) 1px, transparent 1px);
            background-size: 64px 64px;
            pointer-events: none;
            z-index: 0;
        }
        .bg-texture::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 20% 0%, rgba(34, 211, 238, 0.08), transparent 60%);
            pointer-events: none;
            z-index: 0;
        }
        .bg-texture>* {
            position: relative;
            z-index: 1;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding-top: 10px;
            background: transparent;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--color-glass-strong);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            padding: 8px 12px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            position: relative;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .nav-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 12px;
            right: 12px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.4), transparent);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 12px;
            border-radius: 12px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-hi);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .brand-text span {
            color: var(--color-primary);
        }
        .nav-links {
            display: flex;
            gap: 6px;
            align-items: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 0 4px;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-card {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid transparent;
            color: var(--color-text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .nav-card .nav-icon {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .nav-card:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text-hi);
            transform: translateY(-3px);
            text-decoration: none;
        }
        .nav-card:hover .nav-icon {
            color: var(--color-primary);
            filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.6));
        }
        .nav-card.active {
            background: rgba(34, 211, 238, 0.1);
            border-color: var(--color-line-strong);
            color: var(--color-primary);
        }
        .nav-card.active .nav-icon {
            color: var(--color-primary);
            filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.5));
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(8, 145, 178, 0.15));
            border: 1px solid var(--color-line-strong);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .btn-nav-cta:hover {
            background: rgba(34, 211, 238, 0.2);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.2);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        /* ===== 按钮 ===== */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 12px;
            background: linear-gradient(135deg, #22D3EE, #0891B2);
            color: #04121F;
            font-weight: 700;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.35);
            text-decoration: none;
        }
        .btn-glow:hover {
            background: linear-gradient(135deg, #35E3FF, #0AA5C9);
            box-shadow: 0 0 36px rgba(34, 211, 238, 0.5);
            transform: translateY(-2px);
            color: #04121F;
        }
        .btn-glow:active {
            transform: translateY(0);
        }
        .btn-glow:focus-visible {
            outline: 3px solid rgba(34, 211, 238, 0.5);
            outline-offset: 3px;
        }
        .btn-glass {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 12px;
            background: rgba(34, 211, 238, 0.06);
            border: 1px solid var(--color-line-strong);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            backdrop-filter: blur(8px);
        }
        .btn-glass:hover {
            background: rgba(34, 211, 238, 0.12);
            border-color: var(--color-primary);
            color: var(--color-primary);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
            transform: translateY(-2px);
        }
        .btn-glass:active {
            transform: translateY(0);
        }
        .btn-glass:focus-visible {
            outline: 3px solid rgba(34, 211, 238, 0.4);
            outline-offset: 3px;
        }

        /* ===== Hero ===== */
        .hero-section {
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            position: relative;
            padding: 80px 0 60px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 11, 20, 0.85) 0%, rgba(5, 11, 20, 0.65) 50%, rgba(5, 11, 20, 0.9) 100%);
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(rgba(140, 190, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(140, 190, 255, 0.04) 1px, transparent 1px);
            background-size: 60px 60px;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .hero-title {
            font-size: 52px;
            line-height: 1.15;
            color: var(--color-text-hi);
            margin-bottom: 20px;
            font-weight: 700;
        }
        .hero-title .gradient {
            background: linear-gradient(120deg, #FFFFFF 30%, #22D3EE 90%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 18px;
            line-height: 1.8;
            color: var(--color-text-body);
            margin-bottom: 36px;
            max-width: 560px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .hero-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 12px;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            backdrop-filter: blur(12px);
            font-size: 13px;
            color: var(--color-text-body);
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
            animation: pulse 2s infinite;
        }
        .status-dot.green {
            background: var(--color-success);
        }
        .status-dot.yellow {
            background: var(--color-warning);
            animation-delay: 0.3s;
        }
        .status-dot.cyan {
            background: var(--color-primary);
            animation-delay: 0.6s;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4);
            }
            50% {
                opacity: 0.7;
                box-shadow: 0 0 0 6px rgba(52, 211, 153, 0);
            }
        }
        .hero-scroll {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.3);
            font-size: 14px;
            animation: bounce-down 2s infinite;
            z-index: 2;
            text-decoration: none;
        }
        @keyframes bounce-down {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(8px);
            }
        }

        /* ===== 通用板块标题 ===== */
        .section-title-wrap {
            margin-bottom: 48px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-low);
            max-width: 600px;
        }

        /* ===== 能力模块 ===== */
        .capabilities-section {
            padding: 100px 0;
            background: var(--color-bg-base);
            position: relative;
        }
        .capability-row {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 72px;
        }
        .capability-row:last-child {
            margin-bottom: 0;
        }
        .capability-row.reverse {
            flex-direction: row-reverse;
        }
        .capability-image {
            flex: 0 0 46%;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--color-line);
            position: relative;
        }
        .capability-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }
        .capability-image:hover img {
            transform: scale(1.02);
        }
        .capability-content {
            flex: 1;
        }
        .capability-num {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.1em;
            margin-bottom: 8px;
            display: block;
        }
        .capability-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 14px;
        }
        .capability-desc {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-body);
            margin-bottom: 0;
        }

        /* ===== 权益卡片 ===== */
        .benefits-section {
            padding: 100px 0;
            background: var(--color-bg-elev);
            position: relative;
        }
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .benefit-card {
            border-radius: var(--radius-card);
            padding: 32px 28px;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            backdrop-filter: blur(18px);
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }
        .benefit-card::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 80%;
            height: 80%;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.1), transparent 70%);
            pointer-events: none;
        }
        .benefit-card:hover {
            border-color: var(--color-line-strong);
            box-shadow: 0 0 0 1px var(--color-line-strong), 0 12px 40px rgba(5, 40, 80, 0.35);
            transform: translateY(-4px);
        }
        .benefit-card.featured {
            transform: scale(1.02);
            border-color: var(--color-line-strong);
            background: linear-gradient(135deg, rgba(14, 28, 48, 0.8), rgba(10, 20, 35, 0.7));
        }
        .benefit-card.featured::after {
            content: '';
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
        }
        .benefit-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid var(--color-line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--color-primary);
        }
        .benefit-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 8px;
        }
        .benefit-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-body);
            margin-bottom: 16px;
        }
        .benefit-link {
            font-size: 14px;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .benefit-link:hover {
            text-decoration: underline;
        }

        /* ===== 流程仪表盘 ===== */
        .process-section {
            padding: 100px 0;
            background: var(--color-bg-base);
            position: relative;
        }
        .process-wrapper {
            display: flex;
            gap: 60px;
            align-items: center;
        }
        .process-steps {
            flex: 1;
        }
        .process-step {
            display: flex;
            gap: 16px;
            margin-bottom: 36px;
            position: relative;
        }
        .process-step:last-child {
            margin-bottom: 0;
        }
        .process-step::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 44px;
            bottom: -20px;
            width: 1px;
            background: linear-gradient(180deg, var(--color-line-strong), rgba(34, 211, 238, 0.05));
        }
        .process-step:last-child::before {
            display: none;
        }
        .process-dot {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid var(--color-line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }
        .process-dot.active {
            background: var(--color-primary);
            color: #04121F;
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.5);
        }
        .process-step-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 4px;
        }
        .process-step-desc {
            font-size: 14px;
            color: var(--color-text-low);
            line-height: 1.6;
        }
        .process-panel {
            flex: 1;
            border-radius: var(--radius-card);
            padding: 36px;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            backdrop-filter: blur(18px);
            position: relative;
            overflow: hidden;
            min-height: 320px;
        }
        .process-panel::before {
            content: '';
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(0deg, rgba(34, 211, 238, 0.03) 0px, rgba(34, 211, 238, 0.03) 1px, transparent 1px, transparent 4px);
        }
        .panel-ring {
            position: relative;
            width: 180px;
            height: 180px;
            margin: 0 auto 24px;
            border-radius: 50%;
            background: conic-gradient(var(--color-primary) 0%, rgba(34, 211, 238, 0.2) 65%, rgba(14, 28, 48, 0.2) 75%);
            display: flex;
            align-items: center;
            justify-content: center;
            animation: rotate-ring 12s linear infinite;
        }
        .panel-ring::before {
            content: '';
            position: absolute;
            inset: 12px;
            border-radius: 50%;
            background: var(--color-bg-elev);
        }
        .panel-ring-inner {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .panel-ring-inner .value {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
        }
        .panel-ring-inner .label {
            font-size: 12px;
            color: var(--color-text-low);
            margin-top: 4px;
        }
        @keyframes rotate-ring {
            to {
                transform: rotate(360deg);
            }
        }
        .panel-status-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .panel-status-item {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(140, 190, 255, 0.08);
        }
        .panel-status-item .status-label {
            color: var(--color-text-body);
        }
        .panel-status-item .status-value {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 100px 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            position: relative;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(5, 11, 20, 0.85);
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 16px;
        }
        .cta-desc {
            font-size: 16px;
            color: var(--color-text-body);
            margin-bottom: 32px;
        }
        .cta-btn-wrap {
            position: relative;
            display: inline-block;
        }
        .cta-btn-wrap::after {
            content: '';
            position: absolute;
            inset: -8px;
            border-radius: 20px;
            background: rgba(34, 211, 238, 0.3);
            filter: blur(20px);
            animation: glow-pulse 2.5s ease-in-out infinite;
            z-index: -1;
        }
        @keyframes glow-pulse {
            0%,
            100% {
                opacity: 0.5;
                transform: scale(1);
            }
            50% {
                opacity: 0.9;
                transform: scale(1.05);
            }
        }

        /* ===== 资讯板块 ===== */
        .news-section {
            padding: 100px 0;
            background: var(--color-bg-base);
        }
        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        .news-feature-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            backdrop-filter: blur(18px);
            transition: var(--transition);
            height: 100%;
        }
        .news-feature-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-line-strong);
            box-shadow: 0 0 0 1px var(--color-line-strong), 0 12px 40px rgba(5, 40, 80, 0.35);
        }
        .news-feature-image {
            position: relative;
            overflow: hidden;
            border-radius: 12px;
            margin: 16px;
            height: 240px;
        }
        .news-feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
            border-radius: 12px;
        }
        .news-feature-card:hover .news-feature-image img {
            transform: scale(1.03);
        }
        .badge-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(34, 211, 238, 0.15);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(8px);
            z-index: 2;
        }
        .news-feature-content {
            padding: 0 20px 20px;
        }
        .news-feature-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-feature-title a {
            color: inherit;
            text-decoration: none;
        }
        .news-feature-title a:hover {
            color: var(--color-primary);
        }
        .news-feature-summary {
            font-size: 14px;
            color: var(--color-text-low);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-low);
        }
        .news-meta a {
            color: var(--color-primary);
            font-weight: 500;
            text-decoration: none;
        }
        .news-meta a:hover {
            text-decoration: underline;
        }
        .news-list-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(140, 190, 255, 0.08);
            transition: var(--transition);
            margin-bottom: 12px;
        }
        .news-list-item:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--color-line-strong);
            transform: translateX(4px);
        }
        .news-list-thumb {
            width: 64px;
            height: 64px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .news-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-list-info {
            flex: 1;
            min-width: 0;
        }
        .news-list-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-hi);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-list-title a {
            color: inherit;
            text-decoration: none;
        }
        .news-list-title a:hover {
            color: var(--color-primary);
        }
        .news-list-meta {
            font-size: 13px;
            color: var(--color-text-low);
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .news-list-arrow {
            color: var(--color-primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .news-empty {
            text-align: center;
            padding: 40px;
            border-radius: var(--radius-card);
            border: 1px solid var(--color-line);
            background: var(--color-glass);
            color: var(--color-text-low);
            font-size: 15px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 100px 0;
            background: var(--color-bg-elev);
        }
        .accordion-item {
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            overflow: hidden;
            backdrop-filter: blur(18px);
            transition: var(--transition);
        }
        .accordion-item:hover {
            border-color: var(--color-line-strong);
        }
        .accordion-button {
            background: transparent;
            color: var(--color-text-hi);
            font-size: 16px;
            font-weight: 600;
            padding: 18px 20px;
            box-shadow: none;
            border-radius: var(--radius-card) !important;
            transition: var(--transition);
        }
        .accordion-button:not(.collapsed) {
            background: rgba(34, 211, 238, 0.05);
            color: var(--color-primary);
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.3);
            border-radius: var(--radius-card);
        }
        .accordion-button::after {
            content: '+';
            background-image: none;
            font-size: 24px;
            font-weight: 300;
            color: var(--color-primary);
            transform: none;
            transition: transform 0.3s ease;
            width: auto;
            height: auto;
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--color-primary);
        }
        .accordion-body {
            padding: 0 20px 20px;
            color: var(--color-text-body);
            font-size: 15px;
            line-height: 1.75;
            border-top: 1px solid rgba(140, 190, 255, 0.08);
            margin: 0 20px;
            padding-left: 0;
            padding-right: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #02060C;
            border-top: 1px solid rgba(34, 211, 238, 0.1);
            padding: 60px 0 0;
            color: var(--color-text-low);
        }
        .footer-link-line {
            height: 1px;
            max-width: 60px;
            margin: 0 0 40px;
            background: linear-gradient(90deg, var(--color-primary), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-hi);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand span {
            color: var(--color-primary);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: var(--color-text-low);
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--color-primary);
        }
        .footer-contact-item {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 14px;
            margin-bottom: 12px;
        }
        .footer-contact-item .icon {
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .footer-cert {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(140, 190, 255, 0.1);
            font-size: 13px;
            margin-bottom: 10px;
        }
        .footer-cert .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-success);
        }
        .footer-bottom {
            border-top: 1px solid rgba(140, 190, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            text-align: center;
            color: var(--color-text-low);
        }
        .footer-bottom a {
            color: var(--color-text-low);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .capability-row,
            .capability-row.reverse {
                flex-direction: column;
                gap: 24px;
            }
            .capability-image {
                flex: 1;
                width: 100%;
            }
            .process-wrapper {
                flex-direction: column;
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .benefit-grid {
                grid-template-columns: 1fr;
            }
            .hero-title {
                font-size: 40px;
            }
            .section-title {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header {
                padding-top: 6px;
            }
            .nav-panel {
                padding: 6px;
                border-radius: 12px;
            }
            .brand-text {
                font-size: 16px;
            }
            .brand-icon {
                width: 28px;
                height: 28px;
            }
            .nav-card {
                padding: 6px 10px;
                font-size: 13px;
                gap: 4px;
            }
            .btn-nav-cta {
                padding: 8px 14px;
                font-size: 13px;
            }
            .hero-section {
                min-height: 60vh;
                padding: 60px 0 40px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-glow,
            .btn-glass {
                width: 100%;
                justify-content: center;
            }
            .hero-badges {
                flex-direction: column;
                align-items: flex-start;
            }
            .capabilities-section,
            .benefits-section,
            .process-section,
            .cta-section,
            .news-section,
            .faq-section {
                padding: 60px 0;
            }
            .capability-title {
                font-size: 22px;
            }
            .section-title {
                font-size: 26px;
            }
            .capability-row,
            .capability-row.reverse {
                margin-bottom: 48px;
            }
            .process-panel {
                padding: 24px;
                min-height: auto;
            }
            .cta-title {
                font-size: 28px;
            }
            .news-feature-image {
                height: 180px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-link-line {
                margin-bottom: 24px;
            }
        }
        @media (max-width: 576px) {
            .section-title-wrap {
                margin-bottom: 32px;
            }
            .news-list-thumb {
                width: 48px;
                height: 48px;
            }
            .hero-badges {
                display: grid;
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .benefit-card.featured {
                transform: none;
            }
        }

/* roulang page: article */
:root {
            --color-bg-base: #050B14;
            --color-bg-elev: #0A1424;
            --color-glass: rgba(14, 28, 48, 0.62);
            --color-glass-strong: rgba(10, 20, 35, 0.82);
            --color-primary: #22D3EE;
            --color-primary-dim: #0E7C94;
            --color-accent: #F5B84B;
            --color-line: rgba(140, 190, 255, 0.16);
            --color-line-strong: rgba(34, 211, 238, 0.45);
            --color-text-hi: #E9F1FB;
            --color-text-body: #B4C4DA;
            --color-text-low: #6C82A3;
            --color-success: #34D399;
            --color-warning: #FBBF24;
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-btn: 12px;
            --container-max: 1320px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg-base);
            color: var(--color-text-body);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            z-index: -2;
            background:
                linear-gradient(rgba(34, 211, 238, 0.045) 1px, transparent 1px),
                linear-gradient(90deg, rgba(34, 211, 238, 0.045) 1px, transparent 1px);
            background-size: 64px 64px;
            pointer-events: none;
        }

        body::after {
            content: '';
            position: fixed;
            inset: 0;
            z-index: -1;
            background:
                radial-gradient(ellipse 80% 50% at 50% -10%, rgba(34, 211, 238, 0.07), transparent 60%),
                radial-gradient(ellipse 60% 40% at 100% 100%, rgba(34, 211, 238, 0.03), transparent 60%);
            pointer-events: none;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.25s ease;
        }

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

        button,
        input {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container-custom {
            max-width: calc(var(--container-max) + 48px);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: sticky;
            top: 10px;
            z-index: 1050;
            padding: 0 12px;
            margin-top: 10px;
        }

        .nav-panel {
            position: relative;
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--color-glass-strong);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            padding: 8px 14px 8px 18px;
            box-shadow: 0 8px 40px rgba(2, 10, 25, 0.45);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .nav-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.4), transparent);
            pointer-events: none;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            margin-right: 20px;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-hi);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 16px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid transparent;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-body);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-card .nav-icon {
            width: 17px;
            height: 17px;
            flex-shrink: 0;
        }

        .nav-card:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--color-primary);
            border-color: rgba(34, 211, 238, 0.25);
            transform: translateY(-2px);
        }

        .nav-card:hover .nav-icon {
            filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.6));
        }

        .nav-card.active {
            background: rgba(34, 211, 238, 0.1);
            border-color: rgba(34, 211, 238, 0.35);
            color: var(--color-primary);
        }

        .nav-card.active .nav-icon {
            filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.6));
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 20px;
            border-radius: 10px;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.35);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

        .btn-nav-cta:hover {
            background: rgba(34, 211, 238, 0.18);
            box-shadow: 0 0 18px rgba(34, 211, 238, 0.2);
            transform: translateY(-1px);
        }

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

        .btn-nav-cta:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 64px 0 48px;
            background:
                linear-gradient(rgba(5, 11, 20, 0.9), rgba(5, 11, 20, 0.96)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--color-line);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 32px;
            font-size: 13px;
            color: var(--color-text-low);
        }

        .breadcrumb-nav a {
            color: var(--color-text-low);
            transition: color 0.2s ease;
        }

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

        .breadcrumb-nav .bc-sep {
            color: var(--color-text-low);
            opacity: 0.5;
        }

        .breadcrumb-nav .bc-current {
            color: var(--color-text-body);
        }

        .breadcrumb-nav .bc-cat {
            color: var(--color-primary);
        }

        .breadcrumb-nav .bc-title {
            color: var(--color-text-body);
            max-width: 220px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            display: inline-block;
            vertical-align: bottom;
        }

        .article-head {
            max-width: 900px;
        }

        .article-head h1 {
            font-size: clamp(30px, 4vw, 44px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text-hi);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 8px;
        }

        .meta-badge {
            display: inline-flex;
            align-items: center;
            height: 24px;
            padding: 0 12px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 500;
            line-height: 1;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-low);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--color-line);
            border-radius: 8px;
            padding: 4px 12px;
        }

        .meta-item svg {
            width: 14px;
            height: 14px;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 56px 0 72px;
        }

        .article-layout {
            max-width: 780px;
            margin: 0 auto;
        }

        .article-body {
            color: var(--color-text-body);
            font-size: 16px;
            line-height: 1.75;
        }

        .article-body p {
            margin-bottom: 1.5em;
            line-height: 1.75;
            color: var(--color-text-body);
        }

        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-hi);
            border-left: 4px solid var(--color-primary);
            padding-left: 16px;
            margin: 1.8em 0 0.8em;
            line-height: 1.3;
        }

        .article-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 1.6em 0 0.7em;
            line-height: 1.3;
        }

        .article-body h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin: 1.4em 0 0.6em;
        }

        .article-body blockquote {
            border-left: 3px solid var(--color-primary);
            background: rgba(255, 255, 255, 0.045);
            padding: 16px 20px;
            margin: 1.4em 0;
            color: var(--color-text-low);
            border-radius: 0 10px 10px 0;
        }

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

        .article-body a {
            color: var(--color-primary);
            border-bottom: 1px dashed rgba(34, 211, 238, 0.5);
            text-decoration: none;
            transition: border-color 0.2s ease;
        }

        .article-body a:hover {
            border-bottom-style: solid;
            border-bottom-color: var(--color-primary);
        }

        .article-body code {
            background: #0D1117;
            color: #7ECBEE;
            padding: 2px 6px;
            border-radius: 4px;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
            font-size: 13px;
        }

        .article-body pre {
            background: #0D1117;
            padding: 18px 20px;
            border-radius: 10px;
            overflow-x: auto;
            line-height: 1.6;
            margin: 1.4em 0;
            border: 1px solid rgba(140, 190, 255, 0.1);
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: #B4C4DA;
        }

        .article-body img {
            max-width: 100%;
            border-radius: 12px;
            margin: 1.4em 0;
            box-shadow: 0 0 0 1px rgba(140, 190, 255, 0.1), 0 12px 32px rgba(0, 0, 0, 0.3);
        }

        .article-body figure {
            margin: 1.5em 0;
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--color-text-low);
            text-align: center;
            margin-top: 8px;
        }

        .article-body ul {
            list-style: none;
            padding-left: 0;
            margin: 1.2em 0;
        }

        .article-body ul li {
            position: relative;
            padding-left: 22px;
            margin-bottom: 0.5em;
        }

        .article-body ul li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 0.6em;
            width: 7px;
            height: 7px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .article-body ol {
            list-style: none;
            counter-reset: article-ol;
            padding-left: 0;
            margin: 1.2em 0;
        }

        .article-body ol li {
            counter-increment: article-ol;
            position: relative;
            padding-left: 32px;
            margin-bottom: 0.5em;
        }

        .article-body ol li::before {
            content: counter(article-ol) ".";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--color-primary);
            font-weight: 600;
        }

        .article-body strong {
            color: var(--color-primary);
            font-weight: 700;
        }

        .article-body em {
            color: var(--color-accent);
            font-style: italic;
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--color-line);
            margin: 2em 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 14px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--color-line);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body th {
            background: var(--color-bg-elev);
            color: var(--color-text-hi);
            font-weight: 600;
        }

        /* Empty State */
        .article-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 72px 32px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-line);
            background: var(--color-glass);
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
            text-align: center;
        }

        .article-empty .empty-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .article-empty h3 {
            font-size: 22px;
            color: var(--color-text-hi);
            margin-bottom: 8px;
        }

        .article-empty p {
            color: var(--color-text-low);
            margin-bottom: 24px;
        }

        .article-empty .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #22D3EE, #0891B2);
            color: #041018;
            font-weight: 700;
            padding: 10px 26px;
            border-radius: 10px;
            border: none;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .article-empty .btn-primary:hover {
            box-shadow: 0 0 30px rgba(34, 211, 238, 0.4);
            transform: translateY(-2px);
        }

        /* ===== Related Section ===== */
        .related-section {
            padding: 72px 0;
            background: rgba(10, 20, 36, 0.45);
            border-top: 1px solid var(--color-line);
            border-bottom: 1px solid var(--color-line);
        }

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

        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 6px;
            letter-spacing: 0.01em;
        }

        .section-head p {
            color: var(--color-text-low);
            font-size: 15px;
        }

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

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--color-glass);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .related-card:hover {
            border-color: var(--color-line-strong);
            box-shadow: 0 0 0 1px var(--color-line-strong), 0 16px 48px rgba(5, 40, 80, 0.35);
            transform: translateY(-4px);
        }

        .related-cover {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--color-bg-elev);
        }

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

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

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

        .related-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-hi);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-content p {
            font-size: 14px;
            color: var(--color-text-low);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Back Link ===== */
        .back-link-section {
            padding: 40px 0 72px;
            text-align: center;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--color-primary);
            font-size: 15px;
            font-weight: 500;
            border: 1px solid var(--color-line);
            background: var(--color-glass);
            padding: 10px 24px;
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .back-link:hover {
            border-color: var(--color-line-strong);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
            transform: translateX(-4px);
            color: var(--color-primary);
        }

        .back-link svg {
            width: 16px;
            height: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #02060C;
            border-top: 1px solid rgba(34, 211, 238, 0.2);
            padding: 56px 0 32px;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 1px;
            background: var(--color-primary);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
        }

        .footer-link-line {
            content: '';
            display: block;
            width: 60px;
            height: 1px;
            background: var(--color-primary);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
            margin-bottom: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--color-primary);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-hi);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-low);
            transition: color 0.2s ease;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-low);
            margin-bottom: 12px;
        }

        .footer-contact-item .icon {
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .footer-cert {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--color-text-low);
            margin-bottom: 10px;
        }

        .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-success);
            display: inline-block;
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(140, 190, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--color-text-low);
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .footer-grid {
                grid-template-columns: 1fr 0.8fr 1fr;
            }
        }

        @media (max-width: 992px) {
            .nav-card {
                padding: 8px 12px;
            }
            .brand-text {
                font-size: 18px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 6px;
                padding: 0 8px;
            }
            .nav-panel {
                padding: 8px 12px;
                gap: 8px;
                overflow-x: auto;
                scrollbar-width: none;
            }
            .nav-panel::-webkit-scrollbar {
                display: none;
            }
            .brand {
                margin-right: 10px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
            }
            .brand-text {
                font-size: 16px;
            }
            .nav-links {
                gap: 4px;
                justify-content: flex-start;
            }
            .nav-card {
                font-size: 13px;
                padding: 7px 10px;
                white-space: nowrap;
            }
            .btn-nav-cta {
                padding: 8px 14px;
                font-size: 13px;
                margin-left: auto;
            }
            .article-hero {
                padding: 44px 0 36px;
            }
            .article-head h1 {
                font-size: 30px;
                line-height: 1.25;
            }
            .article-section {
                padding: 40px 0 56px;
            }
            .article-layout {
                padding: 0 16px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 20px;
            }
        }

        @media (max-width: 576px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-panel {
                border-radius: 14px;
            }
            .brand-text {
                display: none;
            }
            .nav-card span {
                display: none;
            }
            .nav-card {
                padding: 8px;
                border-radius: 10px;
            }
            .nav-card .nav-icon {
                width: 19px;
                height: 19px;
            }
            .btn-nav-cta span {
                display: none;
            }
            .btn-nav-cta {
                padding: 8px 12px;
            }
            .article-head h1 {
                font-size: 25px;
            }
            .breadcrumb-nav .bc-title {
                max-width: 120px;
            }
            .article-meta {
                gap: 10px;
            }
            .meta-item {
                font-size: 12px;
                padding: 3px 10px;
            }
            .article-body {
                font-size: 15px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 19px;
            }
            .related-cover {
                aspect-ratio: 16 / 9;
            }
            .related-content {
                padding: 16px 18px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg-base: #050B14;
            --color-bg-elev: #0A1424;
            --color-glass: rgba(14, 28, 48, 0.62);
            --color-glass-strong: rgba(10, 20, 35, 0.82);
            --color-primary: #22D3EE;
            --color-primary-dim: #0E7C94;
            --color-accent: #F5B84B;
            --color-line: rgba(140, 190, 255, 0.16);
            --color-line-strong: rgba(34, 211, 238, 0.45);
            --color-text-hi: #E9F1FB;
            --color-text-body: #B4C4DA;
            --color-text-low: #6C82A3;
            --color-success: #34D399;
            --color-warning: #FBBF24;
            --radius-card: 16px;
            --radius-sm: 8px;
            --radius-btn: 12px;
            --spacer: 24px;
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-body);
            background-color: var(--color-bg-base);
            background-image:
                radial-gradient(circle at 18% 12%, rgba(34, 211, 238, 0.08) 0%, transparent 42%),
                radial-gradient(circle at 85% 70%, rgba(245, 184, 75, 0.03) 0%, transparent 30%),
                linear-gradient(rgba(140, 190, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(140, 190, 255, 0.04) 1px, transparent 1px);
            background-size: auto, auto, 60px 60px, 60px 60px;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }

        a:hover {
            color: #67E8F9;
        }

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

        h1,
        h2,
        h3,
        h4,
        h5 {
            font-weight: 700;
            color: var(--color-text-hi);
            line-height: 1.3;
            letter-spacing: 0.01em;
        }

        p {
            margin: 0 0 1em;
        }

        ul {
            padding-left: 0;
            list-style: none;
        }

        .container-custom {
            width: 100%;
            max-width: 1320px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        section {
            position: relative;
        }

        .section-pad {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 38px;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 17px;
            color: var(--color-text-low);
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--color-primary);
            text-transform: uppercase;
            margin-bottom: 12px;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.22);
            border-radius: 999px;
            padding: 4px 14px;
        }

        .section-eyebrow::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 10px var(--color-primary);
        }

        .row {
            --bs-gutter-x: 24px;
            --bs-gutter-y: 24px;
        }

        .glass-card {
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            background-image: radial-gradient(circle at 12% 8%, rgba(255, 255, 255, 0.06) 0%, transparent 38%);
            transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
        }

        .glass-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-line-strong);
            box-shadow: 0 0 0 1px var(--color-line-strong), 0 12px 40px rgba(5, 40, 80, 0.35);
        }

        .btn-main,
        .btn-sub {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 700;
            line-height: 1.2;
            padding: 14px 32px;
            border: 0;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-main {
            background: linear-gradient(135deg, #22D3EE 0%, #0891B2 100%);
            color: #04121F;
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.35);
        }

        .btn-main:hover {
            filter: brightness(1.1);
            color: #04121F;
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(34, 211, 238, 0.5);
        }

        .btn-main:active {
            transform: translateY(0);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.25);
        }

        .btn-main:focus-visible,
        .btn-sub:focus-visible,
        .btn-nav-cta:focus-visible {
            outline: 3px solid var(--color-primary);
            outline-offset: 3px;
        }

        .btn-sub {
            background: rgba(34, 211, 238, 0.05);
            color: var(--color-primary);
            border: 1px solid var(--color-line-strong);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .btn-sub:hover {
            background: rgba(34, 211, 238, 0.12);
            border-color: var(--color-primary);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

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

        .site-header {
            position: sticky;
            top: 10px;
            z-index: 1000;
            padding: 0;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 12px;
            background: var(--color-glass-strong);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            background-image: radial-gradient(circle at 8% 0%, rgba(255, 255, 255, 0.05) 0%, transparent 30%);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 4px 12px 4px 4px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text-hi);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            flex-wrap: nowrap;
        }

        .nav-card {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 14px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid transparent;
            color: var(--color-text-body);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.3s ease;
        }

        .nav-card svg {
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }

        .nav-card:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .nav-card:hover svg {
            filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.6));
        }

        .nav-card.active {
            background: rgba(34, 211, 238, 0.1);
            border-color: var(--color-line-strong);
            color: var(--color-primary);
        }

        .nav-card.active svg {
            filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.5));
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: 12px;
            background: rgba(34, 211, 238, 0.06);
            border: 1px solid var(--color-line-strong);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 700;
            white-space: nowrap;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .btn-nav-cta:hover {
            background: rgba(34, 211, 238, 0.15);
            border-color: var(--color-primary);
            color: var(--color-primary);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.2);
            transform: translateY(-2px);
        }

        .hero {
            padding: 120px 0 100px;
            position: relative;
            overflow: hidden;
            background-image:
                linear-gradient(102deg, rgba(5, 11, 20, 0.88) 0%, rgba(8, 18, 32, 0.72) 55%, rgba(5, 11, 20, 0.6) 100%),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 78vh;
            display: flex;
            align-items: center;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 22% 30%, rgba(34, 211, 238, 0.12) 0%, transparent 48%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-content .section-eyebrow {
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 54px;
            line-height: 1.15;
            margin: 0 0 18px;
            background: linear-gradient(120deg, #F8FBFF 20%, #A9F2FF 70%, #22D3EE 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .hero-desc {
            font-size: 19px;
            line-height: 1.7;
            color: var(--color-text-body);
            margin-bottom: 32px;
            max-width: 620px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(14, 28, 48, 0.7);
            border: 1px solid var(--color-line);
            font-size: 13px;
            color: var(--color-text-low);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
            display: inline-block;
        }

        .badge-dot.green {
            background: var(--color-success);
            box-shadow: 0 0 10px rgba(52, 211, 153, 0.6);
            animation: breathe 2.4s ease-in-out infinite;
        }

        .badge-dot.cyan {
            background: var(--color-primary);
            box-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
            animation: breathe 2s ease-in-out infinite;
        }

        .badge-dot.yellow {
            background: var(--color-warning);
            box-shadow: 0 0 10px rgba(251, 191, 36, 0.5);
            animation: breathe 2.8s ease-in-out infinite;
        }

        @keyframes breathe {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.65;
                transform: scale(0.85);
            }
        }

        .capability-section {
            padding: 100px 0 40px;
            background: rgba(10, 20, 36, 0.35);
        }

        .cap-row {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 72px;
        }

        .cap-row.reverse {
            flex-direction: row-reverse;
        }

        .cap-visual {
            flex: 1 1 48%;
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--color-line);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
        }

        .cap-visual img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .cap-visual:hover img {
            transform: scale(1.03);
        }

        .cap-text {
            flex: 1 1 46%;
        }

        .cap-num {
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.12em;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }

        .cap-num::before {
            content: "";
            width: 20px;
            height: 2px;
            background: var(--color-primary);
            display: inline-block;
        }

        .cap-text h3 {
            font-size: 28px;
            margin-bottom: 14px;
        }

        .cap-text p {
            color: var(--color-text-body);
            margin-bottom: 16px;
        }

        .cap-list li {
            position: relative;
            padding-left: 22px;
            color: var(--color-text-body);
            margin-bottom: 8px;
        }

        .cap-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.52em;
            width: 9px;
            height: 9px;
            background: var(--color-primary);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
            transform: rotate(45deg);
            border-radius: 2px;
        }

        .scene-section {
            padding: 90px 0;
        }

        .scene-grid .glass-card {
            padding: 28px;
            height: 100%;
        }

        .scene-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.22);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .scene-icon svg {
            width: 26px;
            height: 26px;
            stroke: var(--color-primary);
        }

        .scene-card h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .scene-card p {
            font-size: 15px;
            color: var(--color-text-low);
            margin-bottom: 0;
        }

        .process-section {
            padding: 100px 0;
            background: linear-gradient(180deg, rgba(10, 20, 36, 0.5) 0%, rgba(5, 11, 20, 0.2) 100%);
        }

        .process-wrap {
            display: flex;
            gap: 56px;
            align-items: stretch;
        }

        .process-steps {
            flex: 1 1 52%;
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
        }

        .process-steps::before {
            content: "";
            position: absolute;
            left: 23px;
            top: 24px;
            bottom: 24px;
            width: 1px;
            background: linear-gradient(180deg, var(--color-line-strong), rgba(140, 190, 255, 0.08));
        }

        .process-step {
            position: relative;
            padding: 16px 0 16px 64px;
            min-height: 88px;
        }

        .step-dot {
            position: absolute;
            left: 16px;
            top: 26px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--color-bg-elev);
            border: 2px solid var(--color-line-strong);
            z-index: 1;
        }

        .process-step.active .step-dot {
            background: var(--color-primary);
            box-shadow: 0 0 16px rgba(34, 211, 238, 0.7);
        }

        .process-step h3 {
            font-size: 20px;
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 15px;
            color: var(--color-text-low);
            margin-bottom: 0;
        }

        .process-panel {
            flex: 1 1 42%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 44px 32px;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: 18px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            background-image: radial-gradient(circle at 18% 8%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
            position: relative;
            overflow: hidden;
        }

        .process-panel::after {
            content: "";
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(0deg, rgba(34, 211, 238, 0.02) 0px, transparent 2px, transparent 8px);
            pointer-events: none;
        }

        .progress-ring {
            width: 190px;
            height: 190px;
            border-radius: 50%;
            background: conic-gradient(var(--color-primary) 0deg, var(--color-primary) 270deg, rgba(255, 255, 255, 0.07) 270deg, rgba(255, 255, 255, 0.07) 360deg);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            margin-bottom: 24px;
            animation: ringPulse 3s ease-in-out infinite;
        }

        .progress-ring::before {
            content: "";
            width: 138px;
            height: 138px;
            border-radius: 50%;
            background: var(--color-bg-elev);
            border: 1px solid var(--color-line);
            position: absolute;
        }

        .progress-ring strong {
            position: relative;
            font-size: 38px;
            font-weight: 700;
            color: var(--color-text-hi);
            letter-spacing: -0.02em;
        }

        .progress-ring strong span {
            font-size: 16px;
            color: var(--color-text-low);
            font-weight: 600;
            margin-left: 2px;
        }

        @keyframes ringPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(34, 211, 238, 0.25);
            }
            50% {
                box-shadow: 0 0 44px rgba(34, 211, 238, 0.45);
            }
        }

        .process-panel h4 {
            font-size: 18px;
            margin-bottom: 6px;
        }

        .process-panel p {
            font-size: 14px;
            color: var(--color-text-low);
            margin-bottom: 0;
        }

        .stats-section {
            padding: 80px 0 90px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-card {
            padding: 30px 24px;
            text-align: center;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: 16px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            border-color: var(--color-line-strong);
            transform: translateY(-4px);
        }

        .stat-card strong {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-text-hi);
            display: block;
            line-height: 1.2;
            margin-bottom: 6px;
            background: linear-gradient(120deg, #F8FBFF 30%, #A9F2FF 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-card span {
            font-size: 14px;
            color: var(--color-text-low);
        }

        .faq-section {
            padding: 90px 0;
            background: rgba(10, 20, 36, 0.3);
        }

        .faq-grid {
            row-gap: 16px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .faq-accordion .accordion-item {
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: 14px;
            overflow: hidden;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            transition: border-color 0.3s ease;
        }

        .faq-accordion .accordion-item:focus-within {
            border-color: var(--color-line-strong);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--color-text-hi);
            font-size: 17px;
            font-weight: 600;
            padding: 18px 22px;
            border: 0;
            box-shadow: none;
            border-radius: 14px !important;
        }

        .faq-accordion .accordion-button:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(34, 211, 238, 0.07);
            color: var(--color-primary);
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 24px;
            font-weight: 400;
            color: var(--color-primary);
            width: auto;
            height: auto;
            transform: none;
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }

        .faq-accordion .accordion-body {
            padding: 0 22px 18px;
            font-size: 15px;
            line-height: 1.75;
            color: var(--color-text-low);
            border-top: 1px solid rgba(140, 190, 255, 0.08);
            padding-top: 14px;
        }

        .cta-section {
            padding: 90px 0;
        }

        .cta-banner {
            position: relative;
            border-radius: 22px;
            padding: 70px 48px;
            background-image:
                linear-gradient(100deg, rgba(5, 11, 20, 0.9) 0%, rgba(10, 20, 36, 0.7) 60%, rgba(14, 28, 48, 0.65) 100%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--color-line-strong);
            overflow: hidden;
            text-align: center;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 50% 120%, rgba(34, 211, 238, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 34px;
            margin-bottom: 12px;
            position: relative;
        }

        .cta-banner p {
            font-size: 17px;
            color: var(--color-text-body);
            margin-bottom: 28px;
            position: relative;
        }

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

        .site-footer {
            background: #02060C;
            border-top: 1px solid rgba(34, 211, 238, 0.12);
            padding: 56px 0 0;
            position: relative;
        }

        .footer-link-line {
            height: 1px;
            width: 60px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
            margin-bottom: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 14px;
        }

        .footer-brand span {
            color: var(--color-primary);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            margin: 0;
        }

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

        .footer-col ul li a {
            color: var(--color-text-low);
            font-size: 14px;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-low);
            font-size: 14px;
            margin-bottom: 10px;
        }

        .footer-contact-item svg {
            stroke: var(--color-primary);
            flex-shrink: 0;
        }

        .footer-cert {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-low);
            font-size: 13px;
            margin-bottom: 10px;
        }

        .footer-cert .badge-dot {
            background: var(--color-primary);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.4);
            width: 7px;
            height: 7px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(140, 190, 255, 0.08);
            padding: 20px 0 28px;
            text-align: center;
            font-size: 13px;
            color: var(--color-text-low);
        }

        @media (max-width: 992px) {
            .hero h1 {
                font-size: 42px;
            }

            .cap-row {
                flex-direction: column;
                gap: 28px;
            }

            .cap-row.reverse {
                flex-direction: column;
            }

            .cap-visual,
            .cap-text {
                flex: 1 1 auto;
                width: 100%;
            }

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

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

        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }

            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }

            .site-header {
                top: 6px;
            }

            .nav-panel {
                border-radius: 14px;
                padding: 8px;
                gap: 6px;
                overflow-x: auto;
                scrollbar-width: none;
            }

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

            .brand {
                padding-right: 8px;
            }

            .brand-text {
                font-size: 16px;
            }

            .brand-icon {
                width: 28px;
                height: 28px;
            }

            .nav-links {
                gap: 6px;
            }

            .nav-card {
                padding: 10px;
            }

            .nav-card span {
                display: none;
            }

            .nav-card svg {
                width: 20px;
                height: 20px;
            }

            .btn-nav-cta {
                padding: 10px 12px;
                font-size: 0;
                gap: 0;
            }

            .btn-nav-cta svg {
                width: 18px;
                height: 18px;
                margin: 0;
            }

            .hero {
                padding: 90px 0 70px;
                min-height: 60vh;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero-desc {
                font-size: 16px;
            }

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

            .hero-badges {
                gap: 8px;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .section-pad,
            .capability-section,
            .scene-section,
            .process-section,
            .faq-section,
            .cta-section {
                padding-top: 60px;
                padding-bottom: 60px;
            }

            .cap-text h3 {
                font-size: 24px;
            }

            .cap-visual img {
                height: 220px;
            }

            .process-wrap {
                flex-direction: column;
                gap: 32px;
            }

            .process-panel {
                padding: 32px 20px;
            }

            .cta-banner {
                padding: 48px 22px;
                border-radius: 18px;
            }

            .cta-banner h2 {
                font-size: 26px;
            }

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

        @media (max-width: 520px) {
            .brand-text {
                font-size: 15px;
            }

            .brand-icon {
                display: none;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }

            .stat-card {
                padding: 20px 14px;
            }

            .stat-card strong {
                font-size: 30px;
            }

            .hero-badge {
                font-size: 12px;
                padding: 6px 12px;
            }

            .btn-main,
            .btn-sub {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --color-bg-base: #050B14;
            --color-bg-elev: #0A1424;
            --color-glass: rgba(14, 28, 48, 0.62);
            --color-glass-strong: rgba(10, 20, 35, 0.82);
            --color-primary: #22D3EE;
            --color-primary-dim: #0E7C94;
            --color-accent: #F5B84B;
            --color-line: rgba(140, 190, 255, 0.16);
            --color-line-strong: rgba(34, 211, 238, 0.45);
            --color-text-hi: #E9F1FB;
            --color-text-body: #B4C4DA;
            --color-text-low: #6C82A3;
            --color-success: #34D399;
            --color-warning: #FBBF24;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --shadow-hover: 0 0 0 1px var(--color-line-strong), 0 12px 40px rgba(5, 40, 80, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text-body);
            background-color: var(--color-bg-base);
            background-image:
                linear-gradient(rgba(34, 211, 238, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(34, 211, 238, 0.03) 1px, transparent 1px),
                radial-gradient(ellipse at 15% -10%, rgba(34, 211, 238, 0.08) 0%, transparent 55%);
            background-size: 44px 44px, 44px 44px, 100% 100%;
            background-attachment: fixed;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease, background-color .25s ease, box-shadow .25s ease, transform .25s ease;
        }
        a:hover {
            color: var(--color-text-hi);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
        }
        .container-custom {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 10px;
            z-index: 1050;
            padding: 0;
            margin-bottom: 10px;
        }
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 12px;
            background: var(--color-glass-strong);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            padding: 8px 12px;
            position: relative;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
            background-image: radial-gradient(circle at 20% 0%, rgba(34, 211, 238, 0.05) 0%, transparent 50%);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            padding: 4px 8px 4px 4px;
            border-radius: var(--radius-md);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-hi);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .brand-text span {
            color: var(--color-primary);
            font-weight: 400;
            margin-left: 2px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }
        .nav-card {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid transparent;
            color: var(--color-text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all .25s ease;
        }
        .nav-card .nav-icon {
            width: 17px;
            height: 17px;
            flex-shrink: 0;
        }
        .nav-card:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--color-text-hi);
            transform: translateY(-2px);
        }
        .nav-card:hover .nav-icon {
            color: var(--color-primary);
            filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.6));
        }
        .nav-card.active {
            background: rgba(34, 211, 238, 0.1);
            border-color: var(--color-line-strong);
            color: var(--color-primary);
        }
        .nav-card.active .nav-icon {
            color: var(--color-primary);
            filter: drop-shadow(0 0 6px rgba(34, 211, 238, 0.5));
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-left: auto;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid var(--color-line-strong);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all .25s ease;
            flex-shrink: 0;
        }
        .btn-nav-cta:hover {
            background: rgba(34, 211, 238, 0.16);
            color: var(--color-text-hi);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.18);
            transform: translateY(-2px);
        }
        .btn-nav-cta:active {
            transform: translateY(0);
        }
        .btn-nav-cta:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }
        /* ========== 按钮体系 ========== */
        .btn-primary-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 0;
            background: linear-gradient(135deg, #22D3EE 0%, #0891B2 100%);
            color: #04121A;
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
            cursor: pointer;
            transition: all .25s ease;
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.35);
        }
        .btn-primary-glow:hover {
            background: linear-gradient(135deg, #38E0FA 0%, #0891B2 100%);
            color: #04121A;
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(34, 211, 238, 0.45);
        }
        .btn-primary-glow:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.3);
        }
        .btn-primary-glow:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }
        .btn-glass-line {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            background: rgba(14, 28, 48, 0.45);
            border: 1px solid var(--color-line-strong);
            backdrop-filter: blur(12px);
            color: var(--color-primary);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s ease;
        }
        .btn-glass-line:hover {
            background: rgba(34, 211, 238, 0.12);
            color: var(--color-text-hi);
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-glass-line:active {
            transform: translateY(0);
        }
        .btn-glass-line:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }
        /* ========== Hero / 分类页头图 ========== */
        .category-hero {
            position: relative;
            min-height: 56vh;
            display: flex;
            align-items: center;
            padding: 80px 0 60px;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 11, 20, 0.8) 0%, rgba(5, 11, 20, 0.6) 50%, var(--color-bg-base) 100%);
            z-index: 1;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 70% 20%, rgba(34, 211, 238, 0.15) 0%, transparent 55%),
                linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
            background-size: 100% 100%, 40px 40px, 40px 40px;
            z-index: 1;
        }
        .category-hero .category-hero-inner {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .category-hero .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 30px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid var(--color-line-strong);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 20px;
        }
        .category-hero .category-badge .badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-success);
            display: inline-block;
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        .category-hero h1 {
            font-size: 52px;
            font-weight: 700;
            color: var(--color-text-hi);
            line-height: 1.2;
            letter-spacing: 0.01em;
            margin: 0 0 18px;
            max-width: 680px;
        }
        .category-hero h1 .brand-highlight {
            background: linear-gradient(135deg, #E9F1FB 20%, #22D3EE 80%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .category-hero p.lead-text {
            font-size: 18px;
            line-height: 1.8;
            color: var(--color-text-body);
            max-width: 560px;
            margin-bottom: 32px;
        }
        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            margin-bottom: 48px;
        }
        .category-hero .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding-top: 8px;
        }
        .hero-stat-item {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            backdrop-filter: blur(14px);
            font-size: 13px;
            color: var(--color-text-low);
        }
        .hero-stat-item i {
            color: var(--color-primary);
            font-size: 15px;
        }
        /* ========== 通用板块 ========== */
        .section-block {
            padding: 80px 0;
            position: relative;
        }
        .section-block .section-head {
            margin-bottom: 48px;
        }
        .section-block .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-block .section-head p {
            font-size: 16px;
            color: var(--color-text-low);
            max-width: 640px;
            margin-bottom: 0;
        }
        .section-head .section-kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 10px;
            padding: 4px 14px;
            border-radius: 30px;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.2);
        }
        /* ========== 能力图文交替 ========== */
        .capability-block {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 64px;
            position: relative;
        }
        .capability-block:last-child {
            margin-bottom: 0;
        }
        .capability-block .capability-media {
            flex: 0 0 48%;
            position: relative;
        }
        .capability-block .capability-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-line);
            display: block;
        }
        .capability-block .capability-media::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.12);
            pointer-events: none;
        }
        .capability-block .capability-content {
            flex: 1;
            position: relative;
        }
        .capability-block .capability-number {
            font-size: 48px;
            font-weight: 800;
            color: rgba(34, 211, 238, 0.25);
            line-height: 1;
            margin-bottom: 12px;
        }
        .capability-block .capability-content h3 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .capability-block .capability-content p {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text-body);
            margin-bottom: 16px;
        }
        .capability-block .capability-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }
        .capability-block .capability-tags .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 30px;
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.18);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
        }
        .capability-block.reverse .capability-media {
            order: 2;
        }
        .capability-block.reverse .capability-content {
            order: 1;
        }
        /* ========== 场景卡片 ========== */
        .scenario-card {
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            height: 100%;
            backdrop-filter: blur(16px);
            transition: all .3s ease;
            background-image: radial-gradient(circle at 15% 0%, rgba(255, 255, 255, 0.06) 0%, transparent 50%);
        }
        .scenario-card:hover {
            border-color: var(--color-line-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .scenario-card .scenario-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-primary);
            margin-bottom: 18px;
        }
        .scenario-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 10px;
        }
        .scenario-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-body);
            margin-bottom: 0;
        }
        .scenario-card .scenario-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: 16px;
        }
        .scenario-card .scenario-link:hover {
            color: var(--color-text-hi);
        }
        /* ========== 流程 ========== */
        .process-section {
            background: linear-gradient(180deg, var(--color-bg-base) 0%, var(--color-bg-elev) 100%);
            position: relative;
        }
        .process-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(34, 211, 238, 0.05) 0%, transparent 60%);
            pointer-events: none;
        }
        .process-step {
            position: relative;
            padding: 28px 22px;
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            height: 100%;
            backdrop-filter: blur(14px);
            transition: all .3s ease;
        }
        .process-step:hover {
            border-color: var(--color-line-strong);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.15);
            border: 1px solid var(--color-line-strong);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-text-body);
            margin-bottom: 0;
        }
        /* ========== 数据指标 ========== */
        .metrics-section {
            position: relative;
            padding: 90px 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }
        .metrics-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(5, 11, 20, 0.88);
        }
        .metrics-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .metric-card {
            text-align: center;
            padding: 36px 20px;
            background: rgba(10, 20, 36, 0.7);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(12px);
            height: 100%;
            transition: all .3s ease;
        }
        .metric-card:hover {
            border-color: var(--color-line-strong);
            transform: translateY(-4px);
        }
        .metric-card .metric-value {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .metric-card .metric-label {
            font-size: 14px;
            color: var(--color-text-body);
            margin-bottom: 0;
        }
        .metric-card .metric-note {
            font-size: 13px;
            color: var(--color-text-low);
            margin-top: 10px;
            line-height: 1.6;
        }
        /* ========== FAQ ========== */
        .faq-section .accordion {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            align-items: start;
        }
        .faq-section .accordion-item {
            background: var(--color-glass);
            border: 1px solid var(--color-line);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(14px);
            margin-bottom: 0;
            overflow: hidden;
            transition: border-color .3s ease, box-shadow .3s ease;
        }
        .faq-section .accordion-item:hover {
            border-color: var(--color-line-strong);
        }
        .faq-section .accordion-button {
            background: transparent;
            color: var(--color-text-hi);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border-radius: 0;
            line-height: 1.45;
        }
        .faq-section .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 22px;
            font-weight: 300;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: auto;
            height: auto;
            transition: transform .3s ease;
            font-family: var(--font-sans);
        }
        .faq-section .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }
        .faq-section .accordion-button:not(.collapsed) {
            background: rgba(34, 211, 238, 0.06);
            color: var(--color-text-hi);
            box-shadow: none;
        }
        .faq-section .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .faq-section .accordion-button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: -2px;
        }
        .faq-section .accordion-body {
            padding: 0 24px 22px;
            color: var(--color-text-body);
            font-size: 15px;
            line-height: 1.75;
        }
        /* ========== CTA ========== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(180deg, var(--color-bg-base) 0%, #03121F 100%);
            position: relative;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 80%;
            max-width: 700px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(34, 211, 238, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 16px;
            position: relative;
        }
        .cta-section p {
            font-size: 16px;
            color: var(--color-text-body);
            max-width: 560px;
            margin: 0 auto 36px;
            position: relative;
        }
        .cta-section .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        /* ========== 页脚 ========== */
        .site-footer {
            background: #02060C;
            padding: 70px 0 30px;
            position: relative;
        }
        .site-footer .footer-link-line {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-hi);
            margin-bottom: 16px;
        }
        .footer-brand span {
            color: var(--color-primary);
            font-weight: 400;
            margin-left: 2px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-hi);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--color-text-low);
            font-size: 14px;
            transition: color .25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--color-primary);
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-text-low);
            font-size: 14px;
            margin-bottom: 12px;
        }
        .footer-contact-item .icon {
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .footer-cert {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--color-text-low);
            font-size: 14px;
            margin-bottom: 12px;
        }
        .footer-cert .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            display: inline-block;
            flex-shrink: 0;
        }
        .footer-copyright {
            border-top: 1px solid rgba(140, 190, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            color: var(--color-text-low);
            font-size: 13px;
        }
        .footer-copyright a {
            color: var(--color-text-low);
        }
        .footer-copyright a:hover {
            color: var(--color-primary);
        }
        /* ========== 移动端 CTA ========== */
        .mobile-cta {
            display: none;
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 1090;
            padding: 13px 28px;
            border-radius: 30px;
            background: linear-gradient(135deg, #22D3EE, #0891B2);
            color: #04121A;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 0 24px rgba(34, 211, 238, 0.4);
            transition: all .25s ease;
        }
        .mobile-cta:hover {
            transform: scale(1.04);
            color: #04121A;
            box-shadow: 0 0 36px rgba(34, 211, 238, 0.55);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1200px) {
            .category-hero h1 {
                font-size: 44px;
            }
            .capability-block {
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 992px) {
            .section-block {
                padding: 60px 0;
            }
            .capability-block {
                flex-direction: column;
                gap: 32px;
            }
            .capability-block.reverse {
                flex-direction: column;
            }
            .capability-block.reverse .capability-media {
                order: 0;
            }
            .capability-block.reverse .capability-content {
                order: 0;
            }
            .capability-block .capability-media {
                flex: none;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .faq-section .accordion {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                font-size: 15px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .site-header {
                top: 0;
                margin-bottom: 0;
                border-radius: 0;
            }
            .nav-panel {
                border-radius: 0;
                border-left: 0;
                border-right: 0;
                border-top: 0;
                gap: 6px;
                padding: 8px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 32px;
                height: 32px;
            }
            .nav-card {
                padding: 8px 10px;
                font-size: 13px;
            }
            .nav-card .nav-icon {
                width: 15px;
                height: 15px;
            }
            .btn-nav-cta {
                display: none;
            }
            .category-hero {
                min-height: auto;
                padding: 64px 0 48px;
                background-attachment: scroll;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-hero p.lead-text {
                font-size: 16px;
            }
            .category-hero .hero-actions {
                margin-bottom: 32px;
            }
            .category-hero .hero-stats {
                gap: 12px;
            }
            .hero-stat-item {
                padding: 8px 14px;
                font-size: 12px;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-block .section-head h2 {
                font-size: 26px;
            }
            .capability-block .capability-number {
                font-size: 36px;
            }
            .capability-block .capability-content h3 {
                font-size: 22px;
            }
            .scenario-card {
                margin-bottom: 16px;
            }
            .process-step {
                margin-bottom: 16px;
            }
            .metric-card .metric-value {
                font-size: 32px;
            }
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                margin-bottom: 32px;
            }
            .mobile-cta {
                display: inline-flex;
            }
            .faq-section .accordion-button {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-section .accordion-body {
                padding: 0 18px 18px;
                font-size: 14px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 14px;
            }
            .nav-panel {
                gap: 4px;
            }
            .brand {
                gap: 6px;
                padding-right: 4px;
            }
            .brand-text {
                font-size: 15px;
            }
            .nav-card {
                padding: 8px;
                gap: 4px;
                font-size: 12px;
            }
            .nav-card .nav-icon {
                width: 14px;
                height: 14px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p.lead-text {
                font-size: 15px;
            }
            .btn-primary-glow,
            .btn-glass-line {
                padding: 12px 24px;
                font-size: 15px;
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-stats {
                flex-direction: column;
            }
            .hero-stat-item {
                width: 100%;
            }
            .section-block .section-head h2 {
                font-size: 24px;
            }
            .capability-block {
                margin-bottom: 44px;
            }
            .capability-block .capability-content p {
                font-size: 15px;
            }
            .capability-block .capability-tags .tag-item {
                font-size: 12px;
                padding: 4px 12px;
            }
            .cta-section .cta-actions {
                flex-direction: column;
            }
        }