/* roulang page: index */
:root {
            --bg-deep: #080E1A;
            --bg-card: rgba(12, 20, 35, 0.7);
            --cyan: #00C2FF;
            --purple: #A855F7;
            --orange: #FF6B35;
            --text-primary: #FFFFFF;
            --text-body: #B0C7E0;
            --text-muted: #6B7F99;
            --border-glow: rgba(0, 194, 255, 0.25);
            --border-subtle: rgba(0, 194, 255, 0.15);
            --shadow-card: 0 8px 32px rgba(0, 194, 255, 0.15);
            --shadow-hover: 0 16px 40px rgba(0, 194, 255, 0.3);
            --shadow-btn: 0 0 20px rgba(255, 107, 53, 0.6);
            --shadow-btn-hover: 0 0 35px rgba(255, 107, 53, 0.85);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --font-stack: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1280px;
            --section-gap: 100px;
            --section-gap-mobile: 60px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 1rem;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background:
                repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 194, 255, 0.012) 2px, rgba(0, 194, 255, 0.012) 4px),
                repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 194, 255, 0.012) 2px, rgba(0, 194, 255, 0.012) 4px);
        }

        a {
            color: var(--cyan);
            text-decoration: none;
            transition: color 0.25s, box-shadow 0.25s;
        }

        a:hover {
            color: #4dd5ff;
            text-shadow: 0 0 8px rgba(0, 194, 255, 0.5);
        }

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

        button,
        input,
        textarea {
            font-family: var(--font-stack);
            font-size: 1rem;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 1;
        }

        /* ========== NAVIGATION ========== */
        .nav-bar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 14, 26, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 194, 255, 0.2);
            transition: box-shadow 0.35s, padding 0.35s;
            padding: 0 0;
        }

        .nav-bar.scrolled {
            box-shadow: 0 4px 30px rgba(0, 194, 255, 0.25);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 2rem;
            height: 68px;
            transition: height 0.35s;
        }

        .nav-bar.scrolled .nav-inner {
            height: 56px;
        }

        .nav-logo {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, #FFFFFF 0%, #00C2FF 55%, #A855F7 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            white-space: nowrap;
            flex-shrink: 0;
            text-decoration: none;
            display: inline-block;
        }

        .nav-logo:hover {
            text-shadow: none;
            opacity: 0.9;
            filter: brightness(1.2);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.25s;
            position: relative;
            padding: 4px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--cyan);
            border-radius: 2px;
            transition: width 0.3s;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #FFFFFF;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta {
            display: inline-block;
            background: var(--orange);
            color: #FFFFFF;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            font-size: 0.9rem;
            box-shadow: var(--shadow-btn);
            transition: all 0.25s;
            white-space: nowrap;
            flex-shrink: 0;
            text-decoration: none;
            letter-spacing: 0.01em;
        }

        .nav-cta:hover {
            box-shadow: var(--shadow-btn-hover);
            background: #ff8055;
            color: #FFFFFF;
            text-shadow: none;
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: none;
            border: none;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 3px;
            transition: all 0.3s;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(8, 14, 26, 0.96);
            backdrop-filter: blur(30px);
            -webkit-backdrop-filter: blur(30px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            list-style: none;
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu a {
            color: #FFFFFF;
            font-size: 1.4rem;
            font-weight: 600;
            text-decoration: none;
            transition: color 0.25s;
        }

        .mobile-menu a:hover {
            color: var(--cyan);
            text-shadow: 0 0 12px rgba(0, 194, 255, 0.7);
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            min-height: 100dvh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            padding: 120px 0 80px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.35;
            filter: saturate(0.6) brightness(0.7);
        }

        .hero-particles {
            position: absolute;
            inset: 0;
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 800px;
            padding: 0 1.5rem;
        }

        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            background: linear-gradient(180deg, #FFFFFF 0%, #00C2FF 70%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-content .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-body);
            margin-bottom: 2.5rem;
            max-width: 580px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

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

        .btn-primary {
            display: inline-block;
            background: var(--orange);
            color: #FFFFFF;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: none;
            cursor: pointer;
            font-size: 1rem;
            box-shadow: var(--shadow-btn);
            transition: all 0.25s;
            text-decoration: none;
            letter-spacing: 0.01em;
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.25);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }

        .btn-primary:hover::before {
            width: 400px;
            height: 400px;
        }

        .btn-primary:hover {
            box-shadow: var(--shadow-btn-hover);
            background: #ff8055;
            transform: translateY(-2px);
            color: #FFFFFF;
            text-shadow: none;
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--cyan);
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            border: 1px solid var(--cyan);
            cursor: pointer;
            font-size: 1rem;
            transition: all 0.25s;
            text-decoration: none;
            letter-spacing: 0.01em;
        }

        .btn-outline:hover {
            background: rgba(0, 194, 255, 0.1);
            border-color: #4dd5ff;
            box-shadow: 0 0 28px rgba(0, 194, 255, 0.5);
            color: #FFFFFF;
            text-shadow: none;
        }

        .hero-data-panel {
            position: absolute;
            right: 6%;
            bottom: 12%;
            z-index: 3;
            background: rgba(12, 20, 35, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(0, 194, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            box-shadow: 0 8px 32px rgba(0, 194, 255, 0.2);
            transform: rotate(-1deg);
            animation: panelFloat 6s ease-in-out infinite;
            min-width: 200px;
        }

        @keyframes panelFloat {
            0%,
            100% {
                transform: rotate(-1deg) translateY(0);
            }
            50% {
                transform: rotate(-0.5deg) translateY(-8px);
            }
        }

        .hero-data-panel .data-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-body);
            white-space: nowrap;
        }

        .hero-data-panel .data-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 10px rgba(0, 194, 255, 0.8);
            animation: dotPulse 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        .hero-data-panel .data-dot.orange {
            background: var(--orange);
            box-shadow: 0 0 10px rgba(255, 107, 53, 0.8);
            animation-delay: 0.5s;
        }

        @keyframes dotPulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.6);
            }
        }

        .hero-data-panel .data-value {
            font-weight: 700;
            color: #FFFFFF;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'Menlo', monospace;
            letter-spacing: 0.03em;
        }

        .scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            cursor: pointer;
            animation: bounceDown 2s ease-in-out infinite;
        }

        .scroll-indicator svg {
            width: 32px;
            height: 32px;
            stroke: var(--cyan);
            fill: none;
            stroke-width: 2;
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(12px);
            }
        }

        /* ========== SECTION COMMONS ========== */
        section {
            padding: var(--section-gap) 0;
            position: relative;
            z-index: 1;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--cyan);
            margin-bottom: 0.75rem;
            border: 1px solid rgba(0, 194, 255, 0.35);
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(0, 194, 255, 0.06);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, var(--cyan), var(--purple));
            border-radius: 3px;
            margin-top: 8px;
        }

        .section-desc {
            color: var(--text-body);
            max-width: 650px;
            margin: 0 auto 3rem;
            text-align: center;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        /* ========== FEATURES Z-LAYOUT ========== */
        .feature-z-block {
            display: flex;
            align-items: center;
            gap: 3rem;
            margin-bottom: 4rem;
            flex-wrap: wrap;
        }

        .feature-z-block:last-child {
            margin-bottom: 0;
        }

        .feature-z-block.reverse {
            flex-direction: row-reverse;
        }

        .feature-z-text {
            flex: 1;
            min-width: 280px;
        }

        .feature-z-text h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #E0F0FF;
            margin-bottom: 0.75rem;
        }

        .feature-z-text p {
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .feature-z-text .feature-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 0.75rem;
        }

        .feature-tag {
            display: inline-block;
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 20px;
            border: 1px solid rgba(0, 194, 255, 0.3);
            color: var(--cyan);
            background: rgba(0, 194, 255, 0.05);
            white-space: nowrap;
        }

        .feature-z-visual {
            flex: 1;
            min-width: 280px;
            position: relative;
        }

        .feature-z-visual .glass-card-img {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.4s;
            position: relative;
        }

        .feature-z-visual .glass-card-img:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(0, 194, 255, 0.5);
        }

        .feature-z-visual .glass-card-img img {
            width: 100%;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .feature-z-visual .glass-card-img .card-inner-text {
            padding: 16px 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ========== DATA SECTION ========== */
        .data-section {
            background: rgba(6, 11, 22, 0.6);
            position: relative;
            overflow: hidden;
        }

        .data-watermark {
            position: absolute;
            font-size: 18rem;
            font-weight: 900;
            color: rgba(0, 194, 255, 0.025);
            white-space: nowrap;
            pointer-events: none;
            user-select: none;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            letter-spacing: -0.03em;
            z-index: 0;
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            position: relative;
            z-index: 1;
        }

        .data-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all 0.4s;
        }

        .data-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(168, 85, 247, 0.5);
        }

        .data-card .data-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--orange);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 0.5rem;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'Menlo', monospace;
            text-shadow: 0 0 30px rgba(255, 107, 53, 0.5);
        }

        .data-card .data-label {
            font-size: 0.95rem;
            color: var(--text-body);
            font-weight: 500;
        }

        /* ========== CASES CAROUSEL ========== */
        .cases-track {
            display: flex;
            gap: 1.5rem;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding: 1rem 0 2rem;
            scrollbar-width: thin;
            scrollbar-color: rgba(0, 194, 255, 0.3) transparent;
        }

        .cases-track::-webkit-scrollbar {
            height: 6px;
        }

        .cases-track::-webkit-scrollbar-track {
            background: transparent;
        }

        .cases-track::-webkit-scrollbar-thumb {
            background: rgba(0, 194, 255, 0.3);
            border-radius: 10px;
        }

        .case-card {
            flex: 0 0 340px;
            scroll-snap-align: start;
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.4s;
            cursor: default;
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(168, 85, 247, 0.5);
        }

        .case-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: 0;
        }

        .case-card-body {
            padding: 20px 22px;
        }

        .case-card-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 0.4rem;
        }

        .case-card-body .case-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0.6rem;
        }

        .case-card-body .case-stat {
            display: inline-block;
            background: rgba(168, 85, 247, 0.15);
            color: var(--purple);
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* ========== SOLUTIONS ========== */
        .solutions-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
        }

        .solution-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            transition: all 0.4s;
            position: relative;
            overflow: hidden;
        }

        .solution-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(168, 85, 247, 0.5);
            transform: translateY(-4px);
        }

        .solution-card .solution-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            display: block;
        }

        .solution-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #E0F0FF;
            margin-bottom: 0.75rem;
        }

        .solution-card p {
            color: var(--text-body);
            margin-bottom: 1rem;
            line-height: 1.8;
        }

        .solution-card ul {
            list-style: none;
            padding: 0;
            margin-bottom: 1.25rem;
        }

        .solution-card ul li {
            padding: 6px 0;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .solution-card ul li::before {
            content: '◆';
            color: var(--cyan);
            font-size: 0.7rem;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .solution-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-radius: var(--radius-md);
            margin-top: 1rem;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: rgba(6, 11, 22, 0.5);
        }

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

        .faq-item {
            background: rgba(12, 20, 35, 0.55);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: all 0.35s;
            overflow: hidden;
            cursor: pointer;
        }

        .faq-item.active {
            border-color: rgba(168, 85, 247, 0.5);
            box-shadow: 0 0 28px rgba(168, 85, 247, 0.25);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: #FFFFFF;
            font-size: 1.05rem;
            user-select: none;
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(168, 85, 247, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all 0.35s;
            font-size: 1.2rem;
            color: var(--purple);
            font-weight: 700;
        }

        .faq-item.active .faq-icon {
            background: rgba(168, 85, 247, 0.4);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px solid transparent;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 24px 20px;
            border-top-color: rgba(168, 85, 247, 0.3);
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: linear-gradient(135deg, rgba(0, 194, 255, 0.1) 0%, rgba(168, 85, 247, 0.12) 50%, rgba(255, 107, 53, 0.08) 100%);
            border-top: 1px solid rgba(0, 194, 255, 0.25);
            border-bottom: 1px solid rgba(0, 194, 255, 0.25);
            text-align: center;
            padding: 4rem 0;
            position: relative;
            z-index: 1;
        }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 0.75rem;
        }

        .cta-banner p {
            color: var(--text-body);
            margin-bottom: 2rem;
            font-size: 1.1rem;
        }

        .cta-banner .trust-badge {
            display: inline-block;
            margin-top: 1.5rem;
            font-size: 0.9rem;
            color: var(--text-muted);
            border: 1px solid rgba(0, 194, 255, 0.25);
            padding: 8px 20px;
            border-radius: 20px;
            background: rgba(0, 194, 255, 0.04);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #060B16;
            border-top: 1px solid rgba(0, 194, 255, 0.2);
            padding: 3rem 0 1.5rem;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--cyan);
            margin-bottom: 1rem;
            font-weight: 700;
        }

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

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color 0.25s;
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: var(--cyan);
            text-shadow: 0 0 6px rgba(0, 194, 255, 0.4);
        }

        .footer-bottom {
            border-top: 1px solid rgba(0, 194, 255, 0.1);
            padding-top: 1.25rem;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.6rem;
            }
            .hero-data-panel {
                right: 3%;
                bottom: 8%;
                padding: 14px 18px;
                gap: 10px;
                font-size: 0.8rem;
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .solutions-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-title {
                font-size: 1.9rem;
            }
            .feature-z-block,
            .feature-z-block.reverse {
                flex-direction: column;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-content .hero-subtitle {
                font-size: 1rem;
            }
            .hero-data-panel {
                position: relative;
                right: auto;
                bottom: auto;
                margin: 2rem auto 0;
                max-width: 300px;
                transform: none;
                animation: none;
            }
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .data-card .data-number {
                font-size: 2.2rem;
            }
            .case-card {
                flex: 0 0 280px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .cta-banner h2 {
                font-size: 1.5rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 1rem;
            }
            .data-watermark {
                font-size: 10rem;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.75rem;
            }
            .hero-content .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn-primary,
            .hero-buttons .btn-outline {
                width: 100%;
                text-align: center;
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .case-card {
                flex: 0 0 250px;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 16px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 12px 18px 16px;
            }
            .solution-card {
                padding: 1.5rem;
            }
            .data-watermark {
                font-size: 6rem;
            }
            .nav-inner {
                padding: 0 1rem;
            }
        }