/* roulang page: index */
:root {
            --primary: #0B2545;
            --primary-dark: #061526;
            --accent: #137A7F;
            --accent-light: #1da3a9;
            --gold: #C5A880;
            --bg-light: #F8FAFC;
            --bg-card: #FFFFFF;
            --text-main: #0F172A;
            --text-muted: #334155;
            --text-sub: #64748B;
            --border-color: rgba(226, 232, 240, 0.9);
            --border-dark: rgba(255, 255, 255, 0.1);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 6px -1px rgba(11,37,69,0.08), 0 2px 4px -2px rgba(11,37,69,0.05);
            --shadow-lg: 0 10px 25px -5px rgba(11,37,69,0.12);
            --radius: 6px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.75;
            letter-spacing: -0.01em;
        }

        body {
            overflow-x: hidden;
            width: 100%;
        }

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

        ul, ol {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Top Bar */
        .top-bar {
            background-color: var(--primary-dark);
            color: #94A3B8;
            font-size: 13px;
            border-bottom: 1px solid var(--border-dark);
            padding: 8px 0;
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-bar-left {
            display: flex;
            gap: 20px;
        }
        .top-bar-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .top-bar-item i {
            color: var(--gold);
        }

        /* Sticky Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 2px 8px rgba(19, 122, 127, 0.3);
        }
        .logo-title {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .logo-desc {
            font-size: 11px;
            color: var(--text-sub);
            letter-spacing: 0.5px;
        }

        .nav-menu {
            display: flex;
            gap: 28px;
            align-items: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 0;
            position: relative;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-link:hover::after, .nav-link.active::after {
            width: 100%;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--accent);
            color: #fff;
        }
        .btn-primary:hover {
            background-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(19, 122, 127, 0.3);
        }
        .btn-dark {
            background-color: var(--primary);
            color: #fff;
        }
        .btn-dark:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(11, 37, 69, 0.3);
        }
        .btn-outline {
            border-color: var(--border-color);
            background: #fff;
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: #f0fdfa;
        }
        .btn-gold {
            background-color: var(--gold);
            color: var(--primary-dark);
            font-weight: 700;
        }
        .btn-gold:hover {
            background-color: #d6bba0;
            transform: translateY(-2px);
        }

        /* Common Section Layout */
        .section {
            padding: 90px 0;
            position: relative;
        }
        .section-header {
            margin-bottom: 56px;
        }
        .section-header.center {
            text-align: center;
            max-width: 820px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
            background: rgba(19, 122, 127, 0.08);
            padding: 4px 12px;
            border-radius: 4px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 1. Hero Section */
        #hero {
            position: relative;
            background: linear-gradient(180deg, #091C34 0%, var(--primary) 100%);
            color: #fff;
            padding: 90px 0 110px;
            overflow: hidden;
        }
        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/d990ccb86f2beebc.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }
        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 24px;
            color: #FFFFFF;
        }
        .hero-desc {
            font-size: 17px;
            color: #CBD5E1;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }
        .hero-badges {
            display: flex;
            gap: 24px;
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 24px;
        }
        .hero-badge-item {
            font-size: 13px;
            color: #94A3B8;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-badge-item i {
            color: var(--gold);
        }
        .hero-schedule-card {
            background: #FFFFFF;
            color: var(--text-main);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow-lg);
            border-top: 4px solid var(--accent);
        }
        .schedule-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .schedule-desc {
            font-size: 14px;
            color: var(--text-sub);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 6px;
        }
        .form-input, .form-select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid #CBD5E1;
            border-radius: 4px;
            font-size: 14px;
            color: var(--text-main);
            outline: none;
            transition: var(--transition);
        }
        .form-input:focus, .form-select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(19, 122, 127, 0.15);
        }

        /* 2. About Section */
        #about {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
        }
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .about-text h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.35;
        }
        .about-text p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .param-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 28px;
        }
        .param-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: var(--radius);
        }
        .param-val {
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 4px;
        }
        .param-label {
            font-size: 13px;
            color: var(--text-sub);
            font-weight: 500;
        }
        .about-image-wrap {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .about-tag-float {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(11, 37, 69, 0.9);
            color: #fff;
            padding: 12px 20px;
            border-radius: 4px;
            font-size: 13px;
            line-height: 1.5;
            backdrop-filter: blur(4px);
            border-left: 4px solid var(--gold);
        }

        /* 3. Advantages Section */
        #advantages {
            background-color: var(--bg-light);
        }
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .adv-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: var(--transition);
        }
        .adv-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: rgba(19, 122, 127, 0.1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
        }
        .adv-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .adv-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 4. Products Section */
        #products {
            background-color: #FFFFFF;
        }
        .prod-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .prod-card {
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .prod-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .prod-img {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }
        .prod-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .prod-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: #f0fdfa;
            padding: 3px 8px;
            border-radius: 4px;
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .prod-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .prod-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            flex: 1;
        }
        .prod-features {
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-bottom: 20px;
            gap: 8px;
            display: flex;
            flex-direction: column;
        }
        .prod-f-item {
            font-size: 13px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .prod-f-item i {
            color: var(--accent);
            font-size: 12px;
        }

        /* 5. Architecture Section */
        #architecture {
            background-color: var(--primary-dark);
            color: #FFFFFF;
        }
        .arch-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .arch-info .section-tag {
            background: rgba(197, 168, 128, 0.2);
            color: var(--gold);
        }
        .arch-info .section-title {
            color: #FFFFFF;
        }
        .arch-info .section-subtitle {
            color: #94A3B8;
            margin-bottom: 28px;
        }
        .layer-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .layer-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-dark);
            padding: 16px 20px;
            border-radius: var(--radius);
            border-left: 4px solid var(--accent);
        }
        .layer-title {
            font-size: 16px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 4px;
            display: flex;
            justify-content: space-between;
        }
        .layer-title span {
            font-size: 12px;
            color: var(--gold);
            font-weight: 400;
        }
        .layer-desc {
            font-size: 13px;
            color: #94A3B8;
        }
        .arch-diagram {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 24px;
            position: relative;
        }
        .arch-diagram img {
            border-radius: 4px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.4);
            border: 1px solid var(--border-dark);
        }

        /* 6. Scenarios Section */
        #scenarios {
            background-color: var(--bg-light);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px;
            display: flex;
            flex-direction: column;
        }
        .scenario-badge {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: #E2E8F0;
            padding: 4px 10px;
            border-radius: 4px;
            align-self: flex-start;
            margin-bottom: 16px;
        }
        .scenario-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .scenario-point {
            margin-bottom: 12px;
        }
        .point-label {
            font-size: 12px;
            font-weight: 700;
            color: var(--text-sub);
            text-transform: uppercase;
        }
        .point-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 2px;
            line-height: 1.6;
        }
        .scenario-outcome {
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* 7. Metrics Section */
        #metrics {
            background: linear-gradient(135deg, var(--primary) 0%, #0F325E 100%);
            color: #FFFFFF;
            padding: 60px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .metric-item {
            padding: 12px;
            border-right: 1px solid rgba(255,255,255,0.1);
        }
        .metric-item:last-child {
            border-right: none;
        }
        .metric-number {
            font-size: 44px;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.1;
            margin-bottom: 8px;
            font-family: Consolas, monospace, sans-serif;
        }
        .metric-number span {
            color: var(--gold);
            font-size: 24px;
        }
        .metric-label {
            font-size: 15px;
            color: #CBD5E1;
            font-weight: 500;
        }
        .metric-sub {
            font-size: 12px;
            color: #94A3B8;
            margin-top: 4px;
        }

        /* 8. Testimonials Section */
        #testimonials {
            background-color: #FFFFFF;
        }
        .testi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .testi-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .testi-quote {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 24px;
            position: relative;
        }
        .testi-quote::before {
            content: "“";
            font-size: 40px;
            color: var(--accent);
            opacity: 0.3;
            line-height: 1;
            display: block;
            margin-bottom: -10px;
        }
        .testi-author {
            display: flex;
            align-items: center;
            gap: 14px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }
        .author-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
        }
        .author-role {
            font-size: 12px;
            color: var(--text-sub);
        }

        /* 9. Insights Section */
        #insights {
            background-color: var(--bg-light);
        }
        .insights-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .insight-card {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .insight-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .insight-img {
            height: 180px;
            width: 100%;
            object-fit: cover;
        }
        .insight-content {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .insight-date {
            font-size: 12px;
            color: var(--text-sub);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .insight-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .insight-summary {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .insight-btn {
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .insight-footer-action {
            margin-top: 48px;
            text-alignThe focus remains on the specific CSS property `text-align` within the `.insight-footer-action` class. This suggests a need to refine the layout or presentation of content within that particular footer element. Further investigation is warranted to determine the desired alignment style and its impact on the overall design of redsermujer.com.


css
.insight-footer-action {
            margin-top: 48px;
            text-align: center;
        }

        /* Section 10: #services */
        #services {
            padding: 60px 0;
            background-color: #f8f8f8;
        }

        .timeline {
            display: flex;
            flex-direction: column;
            align-items: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .timeline-stage {
            width: 80%;
            margin-bottom: 40px;
            padding: 20px;
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            position: relative;
        }

        .timeline-stage::before {
            content: '';
            position: absolute;
            top: 50%;
            left: -30px;
            transform: translateY(-50%);
            width: 10px;
            height: 10px;
            background-color: #3498db;
            border-radius: 50%;
        }

        .timeline-stage:nth-child(even) {
            align-self: flex-end;
        }

        .timeline-stage:nth-child(even)::before {
            left: auto;
            right: -30px;
        }

        .timeline-stage h3 {
            margin-top: 0;
            color: #333;
        }

        .timeline-stage p {
            color: #555;
        }

        /* Section 11: #faq */
        #faq {
            padding: 60px 0;
        }

        .accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .accordion-item {
            border-bottom: 1px solid #ddd;
        }

        .accordion-title {
            padding: 15px;
            background-color: #f7f7f7;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.2s ease;
        }

        .accordion-title:hover {
            background-color: #eee;
        }

        .accordion-title h3 {
            margin: 0;
            font-size: 1.2rem;
            color: #333;
        }

        .accordion-icon {
            font-size: 1.5rem;
            color: #555;
            transition: transform 0.2s ease;
        }

        .accordion-content {
            padding: 15px;
            display: none;
            overflow: hidden;
            color: #555;
        }

        .accordion-item.active .accordion-content {
            display: block;
        }

        .accordion-item.active .accordion-icon {
            transform: rotate(180deg);
        }

        /* Section 12: #contact */
        #contact {
            padding: 60px 0;
            background-color: #f0f0f0;
        }

        .contact-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .contact-form {
            width: 100%;
            max-width: 500px;
            margin-bottom: 30px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
            color: #333;
        }

        .form-group input[type="text"],
        .form-group input[type="email"],
        .form-group textarea {
            width: 100%;
            padding: 10px;


The structure of the page has been confirmed: a main content area with distinct sections for product information and a footer with contact details and trust signals. Identified specific content components like demo forms, badges, and testimonials. Image assets have also been located and categorized.


: center;
        }

        /* 10. Services Section */
        #services {
            background-color: #FFFFFF;
        }
        .timeline-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .timeline-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 50px;
            right: 50px;
            height: 2px;
            background: #E2E8F0;
            z-index: 1;
        }
        .step-card {
            position: relative;
            z-index: 2;
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 20px 24px;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .step-card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--bg-light);
            border: 2px solid var(--accent);
            color: var(--accent);
            font-weight: 800;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            box-shadow: 0 0 0 6px #FFFFFF;
        }
        .step-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .step-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 11. FAQ Section */
        #faq {
            background-color: var(--bg-light);
        }
        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item[open] {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 22px 28px;
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-question::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 12px;
            transition: transform 0.25s ease;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(180deg);
            background: var(--accent);
            color: #FFFFFF;
        }
        .faq-answer {
            padding: 0 28px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid #F1F5F9;
            padding-top: 16px;
        }

        /* 12. Contact & Conversion Section */
        #contact {
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #FFFFFF;
            padding: 96px 0;
            position: relative;
        }
        .contact-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
        }
        .contact-info .section-tag {
            background: rgba(197, 168, 128, 0.2);
            color: var(--gold);
        }
        .contact-info .section-title {
            color: #FFFFFF;
            font-size: 34px;
        }
        .contact-info .section-subtitle {
            color: #CBD5E1;
            margin-bottom: 32px;
        }
        .contact-channel-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-bottom: 36px;
        }
        .channel-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .channel-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--gold);
            font-size: 18px;
            flex-shrink: 0;
        }
        .channel-text-title {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 4px;
        }
        .channel-text-val {
            font-size: 14px;
            color: #94A3B8;
        }
        .contact-form-box {
            background: #FFFFFF;
            border-radius: var(--radius);
            padding: 36px;
            color: var(--text-main);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }
        .form-box-title {
            font-size: 20px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .form-box-sub {
            font-size: 13px;
            color: var(--text-sub);
            margin-bottom: 24px;
        }
        .form-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .form-submit-btn {
            width: 100%;
            padding: 13px;
            font-size: 15px;
            margin-top: 10px;
        }
        .form-security-note {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 12px;
            color: var(--text-sub);
            margin-top: 14px;
        }
        .form-security-note i {
            color: var(--accent);
        }

        /* Footer */
        .site-footer {
            background-color: #030B14;
            color: #94A3B8;
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 72px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 56px;
        }
        .footer-brand .logo-title {
            color: #FFFFFF;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 13px;
            line-height: 1.8;
            color: #64748B;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--accent);
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-link-item a {
            color: #94A3B8;
            font-size: 13px;
        }
        .footer-link-item a:hover {
            color: #FFFFFF;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #64748B;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .adv-grid, .prod-grid, .scenario-grid, .testi-grid, .insights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .timeline-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .top-bar {
                display: none;
            }
            .header-inner {
                height: 64px;
            }
            .nav-menu {
                display: none;
            }
            .hero-grid, .about-layout, .arch-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .metric-item {
                border-right: none;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                padding-bottom: 16px;
            }
            .adv-grid, .prod-grid, .scenario-grid, .testi-grid, .insights-grid, .timeline-grid {
                grid-template-columns: 1fr;
            }
            .form-grid-2 {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 26px;
            }
        }