/* roulang page: index */
:root {
            --bg-deep: #080C16;
            --bg-card: rgba(14, 20, 36, 0.75);
            --bg-card-hover: rgba(18, 26, 44, 0.82);
            --bg-nav: rgba(8, 12, 22, 0.85);
            --bg-footer: #060A12;
            --primary: #0AF0FF;
            --primary-dark: #00B8D4;
            --accent: #C840E9;
            --accent-dark: #A832C4;
            --success: #00FF88;
            --text-white: #FFFFFF;
            --text-body: #C8D0DD;
            --text-muted: #8894A8;
            --border-glow: rgba(10, 240, 255, 0.2);
            --border-glow-strong: rgba(10, 240, 255, 0.5);
            --border-accent: rgba(200, 64, 233, 0.35);
            --shadow-primary: 0 0 18px rgba(10, 240, 255, 0.5);
            --shadow-primary-lg: 0 0 40px rgba(10, 240, 255, 0.25);
            --shadow-accent: 0 0 16px rgba(200, 64, 233, 0.4);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.5);
            --shadow-card-hover: 0 8px 32px rgba(10, 240, 255, 0.25);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-tag: 6px;
            --radius-lg: 20px;
            --font-h1: clamp(2.4rem, 5vw, 3.8rem);
            --font-h2: clamp(1.8rem, 3.5vw, 2.4rem);
            --font-h3: 1.25rem;
            --font-body: 1rem;
            --font-sm: 0.85rem;
            --container-max: 1200px;
            --section-gap: 120px;
            --section-gap-md: 80px;
            --section-gap-sm: 64px;
            --nav-height: 72px;
            --nav-height-mobile: 60px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-body);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAV ========== */
        #header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-nav);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(10, 240, 255, 0.15);
            transition: all var(--transition-normal);
            display: flex;
            align-items: center;
        }

        #header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.04em;
            white-space: nowrap;
            z-index: 1001;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }

        .nav-logo .logo-icon svg {
            width: 100%;
            height: 100%;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.95rem;
            color: var(--text-body);
            position: relative;
            padding: 6px 0;
            font-weight: 500;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            box-shadow: 0 0 10px rgba(10, 240, 255, 0.6);
            transition: width var(--transition-normal);
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary);
            text-shadow: 0 0 12px rgba(10, 240, 255, 0.4);
        }

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

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

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all var(--transition-normal);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
            background: var(--primary);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
            background: var(--primary);
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(8, 12, 22, 0.95);
            backdrop-filter: blur(28px);
            -webkit-backdrop-filter: blur(28px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-normal);
            border: 1px solid rgba(10, 240, 255, 0.18);
            box-shadow: inset 0 0 80px rgba(10, 240, 255, 0.04);
        }

        .mobile-nav-panel.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav-panel a {
            font-size: 1.3rem;
            color: var(--text-white);
            font-weight: 600;
            letter-spacing: 0.03em;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
        }

        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            color: var(--primary);
            text-shadow: 0 0 18px rgba(10, 240, 255, 0.5);
        }

        /* ========== HERO ========== */
        #hero {
            position: relative;
            min-height: 100vh;
            min-height: 640px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 0 100px;
            overflow: hidden;
            background: var(--bg-deep);
        }

        #hero .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        #hero .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center;
            opacity: 0.55;
        }

        #hero .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg,
                    rgba(8, 12, 22, 0.65) 0%,
                    rgba(8, 12, 22, 0.78) 40%,
                    rgba(8, 12, 22, 0.9) 100%);
        }

        #hero .hero-grid-pattern {
            position: absolute;
            inset: 0;
            z-index: 2;
            opacity: 0.045;
            background-image:
                linear-gradient(rgba(10, 240, 255, 0.5) 1px, transparent 1px),
                linear-gradient(90deg, rgba(10, 240, 255, 0.5) 1px, transparent 1px),
                linear-gradient(rgba(10, 240, 255, 0.25) 1px, transparent 1px),
                linear-gradient(90deg, rgba(10, 240, 255, 0.25) 1px, transparent 1px);
            background-size: 60px 60px, 60px 60px, 20px 20px, 20px 20px;
            background-position: 0 0, 0 0, 10px 10px, 10px 10px;
            mask-image: radial-gradient(ellipse at center, black 45%, transparent 75%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 45%, transparent 75%);
        }

        #hero .hero-content {
            position: relative;
            z-index: 3;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
        }

        #hero h1 {
            font-size: var(--font-h1);
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 20px;
            background: linear-gradient(135deg, #0AF0FF 0%, #FFFFFF 45%, #C840E9 90%);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-size: 200% auto;
            animation: shimmer-text 4s ease-in-out infinite;
        }

        @keyframes shimmer-text {
            0%,
            100% {
                background-position: 0% center;
            }
            50% {
                background-position: 100% center;
            }
        }

        #hero .hero-subtitle {
            font-size: clamp(1.05rem, 1.8vw, 1.25rem);
            color: var(--text-body);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            letter-spacing: 0.015em;
        }

        #hero .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 40px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            letter-spacing: 0.03em;
            transition: all 0.25s ease;
            white-space: nowrap;
            font-size: 1rem;
            cursor: pointer;
            text-decoration: none;
            min-height: 48px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #0AF0FF, #00B8D4);
            color: #080C16;
            box-shadow: 0 0 20px rgba(10, 240, 255, 0.4);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(10, 240, 255, 0.7);
            transform: scale(1.04);
            color: #080C16;
        }

        .btn-outline {
            background: transparent;
            color: #0AF0FF;
            border: 1.5px solid rgba(10, 240, 255, 0.6);
            box-shadow: 0 0 8px rgba(10, 240, 255, 0.15);
        }

        .btn-outline:hover {
            border-color: rgba(10, 240, 255, 0.9);
            background: rgba(10, 240, 255, 0.08);
            box-shadow: 0 0 20px rgba(10, 240, 255, 0.4);
            color: #0AF0FF;
            transform: scale(1.03);
        }

        .btn-large {
            padding: 18px 48px;
            font-size: 1.1rem;
            min-height: 56px;
        }

        .hero-floating-cards {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .hero-float-card {
            background: rgba(14, 20, 36, 0.7);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(10, 240, 255, 0.3);
            border-radius: var(--radius-card);
            padding: 14px 22px;
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-card);
            animation: float-card 3.5s ease-in-out infinite;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-float-card:nth-child(2) {
            animation-delay: 1.2s;
            border-color: rgba(200, 64, 233, 0.4);
            box-shadow: 0 0 14px rgba(200, 64, 233, 0.2);
        }

        .hero-float-card .fc-num {
            font-size: 1.4rem;
            background: linear-gradient(135deg, #0AF0FF, #C840E9);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 800;
        }

        @keyframes float-card {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        .scroll-indicator {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            opacity: 0.6;
            animation: bounce-down 2s ease-in-out infinite;
            cursor: pointer;
        }

        .scroll-indicator span {
            font-size: 0.8rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        .scroll-indicator .arrow-down {
            width: 24px;
            height: 24px;
            border-right: 2px solid var(--primary);
            border-bottom: 2px solid var(--primary);
            transform: rotate(45deg);
            opacity: 0.8;
        }

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

        /* ========== SECTIONS COMMON ========== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: var(--font-h2);
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }

        .section-header .divider {
            width: 50px;
            height: 3px;
            border-radius: 2px;
            background: linear-gradient(135deg, #0AF0FF, #C840E9);
            margin: 0 auto;
            box-shadow: 0 0 14px rgba(10, 240, 255, 0.5);
        }

        .section-header p {
            color: var(--text-muted);
            margin-top: 10px;
            font-size: 0.95rem;
        }

        /* ========== SERVICES ========== */
        #services {
            background: var(--bg-deep);
        }

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

        .service-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: left;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .service-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: repeating-linear-gradient(-35deg,
                    transparent,
                    transparent 40px,
                    rgba(10, 240, 255, 0.015) 40px,
                    rgba(10, 240, 255, 0.015) 42px);
            pointer-events: none;
            z-index: 0;
            border-radius: var(--radius-card);
        }

        .service-card>* {
            position: relative;
            z-index: 1;
        }

        .service-card:hover {
            border-color: rgba(10, 240, 255, 0.55);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
            background: var(--bg-card-hover);
        }

        .service-card .service-icon {
            width: 56px;
            height: 56px;
            flex-shrink: 0;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(10, 240, 255, 0.08);
            border: 1px solid rgba(10, 240, 255, 0.25);
        }

        .service-card .service-icon svg {
            width: 28px;
            height: 28px;
        }

        .service-card h3 {
            font-size: var(--font-h3);
            font-weight: 600;
            color: #E8EDF5;
            letter-spacing: 0.02em;
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== STATS ========== */
        #stats {
            background: rgba(8, 12, 22, 0.6);
            border-top: 1px solid rgba(10, 240, 255, 0.1);
            border-bottom: 1px solid rgba(10, 240, 255, 0.1);
            position: relative;
            overflow: hidden;
        }

        #stats::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 600px;
            height: 600px;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(10, 240, 255, 0.04) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        #stats .container {
            position: relative;
            z-index: 1;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item {
            padding: 20px;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0AF0FF, #C840E9);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(10, 240, 255, 0.3);
            letter-spacing: 0.03em;
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
            font-weight: 500;
        }

        /* ========== CASES ========== */
        #cases {
            background: var(--bg-deep);
        }

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

        .case-card {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }

        .case-card:hover {
            border-color: rgba(10, 240, 255, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-5px);
        }

        .case-card .case-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            border-bottom: 1px solid rgba(10, 240, 255, 0.15);
        }

        .case-card .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .case-card:hover .case-img-wrap img {
            transform: scale(1.06);
        }

        .case-card .case-img-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(8, 12, 22, 0.7) 100%);
            pointer-events: none;
            z-index: 1;
        }

        .case-card .case-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(200, 64, 233, 0.3);
            border: 1px solid rgba(200, 64, 233, 0.5);
            color: #f0d0ff;
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            letter-spacing: 0.03em;
            font-weight: 500;
        }

        .case-card .case-info {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .case-card .case-info h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #E8EDF5;
            letter-spacing: 0.02em;
        }

        .case-card .case-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        /* ========== SOLUTIONS ========== */
        #solutions {
            background: var(--bg-deep);
            position: relative;
        }

        #solutions::before {
            content: '';
            position: absolute;
            top: 0;
            left: 10%;
            right: 10%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(10, 240, 255, 0.35), transparent);
            pointer-events: none;
            z-index: 0;
        }

        #solutions .container {
            position: relative;
            z-index: 1;
        }

        .solution-row {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 64px;
        }

        .solution-row:last-child {
            margin-bottom: 0;
        }

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

        .solution-img {
            flex: 0 0 48%;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(10, 240, 255, 0.2);
            box-shadow: 0 0 20px rgba(10, 240, 255, 0.12);
            aspect-ratio: 16/9;
        }

        .solution-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .solution-row:hover .solution-img img {
            transform: scale(1.04);
        }

        .solution-text {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .solution-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.02em;
        }

        .solution-text p {
            color: var(--text-body);
            line-height: 1.7;
        }

        .solution-text ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .solution-text ul li {
            padding-left: 20px;
            position: relative;
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .solution-text ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(10, 240, 255, 0.6);
        }

        /* ========== FAQ ========== */
        #faq {
            background: var(--bg-deep);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(10, 240, 255, 0.12);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .faq-item.active {
            border-color: rgba(10, 240, 255, 0.45);
            box-shadow: 0 0 20px rgba(10, 240, 255, 0.15);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            color: var(--text-white);
            font-size: 1.05rem;
            font-weight: 600;
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            cursor: pointer;
            letter-spacing: 0.015em;
            transition: color var(--transition-fast);
            border: none;
            font-family: inherit;
            line-height: 1.5;
        }

        .faq-item.active .faq-question {
            color: var(--primary);
        }

        .faq-question:hover {
            background: rgba(10, 240, 255, 0.03);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
            transition: transform var(--transition-normal);
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--primary);
            border-radius: 1px;
            transition: all var(--transition-normal);
        }

        .faq-icon::before {
            top: 50%;
            left: 0;
            width: 100%;
            height: 2px;
            transform: translateY(-50%);
        }

        .faq-icon::after {
            top: 0;
            left: 50%;
            width: 2px;
            height: 100%;
            transform: translateX(-50%);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            color: var(--text-body);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* ========== CONTACT CTA ========== */
        #contact {
            background: var(--bg-deep);
            position: relative;
            text-align: center;
            overflow: hidden;
        }

        #contact::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 500px;
            height: 500px;
            transform: translate(-50%, -50%);
            background: radial-gradient(circle, rgba(10, 240, 255, 0.07) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }

        #contact .container {
            position: relative;
            z-index: 1;
        }

        #contact .contact-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        #contact .contact-subtitle {
            color: var(--text-body);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }

        #contact .contact-aux {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        #contact .contact-aux a {
            color: var(--primary);
            transition: color var(--transition-fast);
        }

        #contact .contact-aux a:hover {
            color: #fff;
            text-shadow: 0 0 10px rgba(10, 240, 255, 0.5);
        }

        /* ========== FOOTER ========== */
        #footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(10, 240, 255, 0.2);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.65;
            max-width: 300px;
        }

        .footer-links h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 9px;
        }

        .footer-links ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

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

        .footer-social {
            display: flex;
            gap: 14px;
            margin-top: 4px;
        }

        .footer-social .social-dot {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: 1.5px solid rgba(10, 240, 255, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            background: rgba(10, 240, 255, 0.04);
            cursor: pointer;
        }

        .footer-social .social-dot:hover {
            border-color: var(--primary);
            box-shadow: 0 0 16px rgba(10, 240, 255, 0.4);
            background: rgba(10, 240, 255, 0.1);
        }

        .footer-social .social-dot svg {
            width: 16px;
            height: 16px;
            fill: var(--text-muted);
            transition: fill var(--transition-fast);
        }

        .footer-social .social-dot:hover svg {
            fill: var(--primary);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            font-size: 0.82rem;
            letter-spacing: 0.03em;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1199px) {
            .container {
                max-width: 960px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .solution-row {
                gap: 36px;
            }
            .solution-img {
                flex: 0 0 45%;
            }
        }

        @media (max-width: 991px) {
            .container {
                max-width: 720px;
            }
            .section {
                padding: var(--section-gap-md) 0;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .solution-row,
            .solution-row.reverse {
                flex-direction: column;
                gap: 28px;
            }
            .solution-img {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .stat-number {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 767px) {
            .container {
                max-width: 100%;
                padding: 0 16px;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
            #header {
                height: var(--nav-height-mobile);
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav-panel {
                display: flex;
            }
            #hero {
                min-height: auto;
                padding: 100px 0 80px;
            }
            #hero h1 {
                font-size: clamp(1.8rem, 7vw, 2.4rem);
            }
            #hero .hero-subtitle {
                font-size: 0.95rem;
                margin-bottom: 24px;
            }
            #hero .hero-btns {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .btn {
                width: 100%;
                max-width: 320px;
                padding: 14px 28px;
                font-size: 0.95rem;
            }
            .hero-floating-cards {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .solution-row,
            .solution-row.reverse {
                gap: 20px;
                margin-bottom: 40px;
            }
            .solution-text h3 {
                font-size: 1.2rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 15px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 15px;
            }
            #contact .contact-title {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .scroll-indicator {
                bottom: 16px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .hero-float-card {
                font-size: 0.8rem;
                padding: 10px 16px;
            }
            .hero-float-card .fc-num {
                font-size: 1.1rem;
            }
            .btn-large {
                padding: 16px 32px;
                font-size: 1rem;
                min-height: 48px;
            }
        }