/* roulang page: index */
:root {
            --color-primary: #7B2FFF;
            --color-primary-rgb: 123, 47, 255;
            --color-accent: #00E5FF;
            --color-accent-rgb: 0, 229, 255;
            --color-bg-dark: #0A0E1A;
            --color-bg-panel: #121624;
            --color-bg-card: rgba(255, 255, 255, 0.05);
            --color-warm: #FF6B35;
            --color-warm-rgb: 255, 107, 53;
            --color-text-body: #E0E0E0;
            --color-text-heading: #FFFFFF;
            --color-text-muted: #9BA3B5;
            --color-border-card: rgba(0, 229, 255, 0.2);
            --color-border-card-hover: rgba(0, 229, 255, 0.6);
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-sm: 6px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 40px rgba(0, 229, 255, 0.12);
            --shadow-btn-glow: 0 0 24px rgba(123, 47, 255, 0.35);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-en: 'Inter', 'SF Pro Display', sans-serif;
            --max-width: 1280px;
            --padding-h: 5vw;
            --section-gap: 100px;
            --section-gap-mobile: 60px;
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.25s ease;
            --transition-medium: 0.35s ease;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text-body);
            background-color: var(--color-bg-dark);
            overflow-x: hidden;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
            border: none;
            resize: vertical;
        }
        ul {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-h);
            padding-right: var(--padding-h);
        }

        /* ========== NAVIGATION ========== */
        .site-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background var(--transition-medium), backdrop-filter var(--transition-medium), box-shadow var(--transition-medium);
            display: flex;
            align-items: center;
        }
        .site-nav.scrolled {
            background: rgba(10, 14, 26, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(255, 255, 255, 0.04);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-h);
            padding-right: var(--padding-h);
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1001;
        }
        .nav-logo img {
            height: 36px;
            width: auto;
            border-radius: 4px;
        }
        .nav-logo span {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-heading);
            letter-spacing: 0.01em;
            white-space: nowrap;
            background: linear-gradient(135deg, #c9a0ff 0%, var(--color-accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-muted);
            border-radius: 6px;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: var(--color-accent);
            background: rgba(0, 229, 255, 0.06);
        }
        .nav-cta {
            display: inline-block;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            background: var(--color-warm);
            color: #fff;
            border-radius: var(--radius-btn);
            transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: #ff8255;
            box-shadow: 0 0 28px rgba(255, 107, 53, 0.45);
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            z-index: 1001;
            padding: 8px;
            border-radius: 4px;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(10, 14, 26, 0.97);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-medium);
        }
        .mobile-drawer.open {
            opacity: 1;
            pointer-events: auto;
            display: flex;
        }
        .mobile-drawer a {
            font-size: 22px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.03em;
            transition: color var(--transition-fast);
        }
        .mobile-drawer a:hover {
            color: var(--color-accent);
        }
        .mobile-drawer .nav-cta {
            font-size: 18px;
            padding: 14px 32px;
            margin-top: 8px;
        }

        /* ========== SECTIONS BASE ========== */
        .section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }
        .section-alt {
            background: var(--color-bg-panel);
        }
        .section-dark-tex {
            background-color: var(--color-bg-dark);
            background-image: radial-gradient(ellipse at 50% 0%, rgba(123, 47, 255, 0.06) 0%, transparent 70%);
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text-heading);
            text-align: center;
            margin-bottom: 12px;
            position: relative;
            padding-bottom: 18px;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
        }
        .section-subtitle {
            text-align: center;
            color: var(--color-text-muted);
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        /* ========== HERO ========== */
        .hero {
            padding-top: calc(var(--nav-height) + 60px);
            padding-bottom: 80px;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }
        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            width: 100%;
        }
        .hero-content {
            animation: fadeInUp 0.8s ease forwards;
        }
        .hero-content h1 {
            font-size: 56px;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--color-accent) 0%, #b380ff 40%, var(--color-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            filter: drop-shadow(0 0 18px rgba(123, 47, 255, 0.3));
        }
        .hero-content .hero-subtitle {
            font-size: 18px;
            line-height: 1.6;
            color: var(--color-text-muted);
            margin-bottom: 32px;
            max-width: 480px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-block;
            padding: 14px 30px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: all var(--transition-smooth);
            text-align: center;
            cursor: pointer;
            letter-spacing: 0.01em;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--color-primary);
            color: #fff;
            box-shadow: 0 0 20px rgba(123, 47, 255, 0.2);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            box-shadow: 0 0 32px rgba(0, 229, 255, 0.3);
            transform: translateY(-2px);
            color: var(--color-accent);
        }
        .btn-solid-warm {
            background: var(--color-warm);
            color: #fff;
            box-shadow: 0 4px 18px rgba(255, 107, 53, 0.3);
        }
        .btn-solid-warm:hover {
            background: #ff8255;
            box-shadow: 0 6px 28px rgba(255, 107, 53, 0.5);
            transform: translateY(-2px) scale(1.03);
        }
        .btn-solid-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 18px rgba(123, 47, 255, 0.3);
        }
        .btn-solid-primary:hover {
            background: #8f4dff;
            box-shadow: 0 6px 28px rgba(123, 47, 255, 0.5);
            transform: translateY(-2px) scale(1.03);
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            animation: fadeInUp 1s ease 0.15s forwards;
            opacity: 0;
            animation-fill-mode: forwards;
            aspect-ratio: 4/3;
            max-height: 480px;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
            display: block;
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(123, 47, 255, 0.35) 0%, rgba(0, 229, 255, 0.2) 50%, rgba(10, 14, 26, 0.5) 100%);
            border-radius: var(--radius-card);
            pointer-events: none;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ========== HIGHLIGHTS ========== */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }
        .highlight-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--color-border-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .highlight-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .highlight-card:hover {
            border-color: var(--color-border-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .highlight-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            border: 2px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--color-accent);
            font-size: 22px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }
        .highlight-icon svg {
            width: 26px;
            height: 26px;
            fill: none;
            stroke: var(--color-accent);
            stroke-width: 2;
        }
        .highlight-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }
        .highlight-card p {
            font-size: 15px;
            color: var(--color-text-muted);
            line-height: 1.55;
            position: relative;
            z-index: 1;
        }
        .highlight-card .metric-value {
            font-family: var(--font-en);
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            display: block;
            margin-bottom: 4px;
        }

        /* ========== CASES ========== */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: 1100px;
            margin: 0 auto;
        }
        .case-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--color-border-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            cursor: pointer;
            position: relative;
        }
        .case-card:hover {
            border-color: var(--color-border-card-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .case-card:nth-child(even) {
            margin-top: 40px;
        }
        .case-card:nth-child(odd) {
            margin-top: 0;
        }
        .case-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .case-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-medium);
            display: block;
        }
        .case-card:hover .case-card-img img {
            transform: scale(1.06);
        }
        .case-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(10, 14, 26, 0.7) 100%);
            pointer-events: none;
            transition: opacity var(--transition-medium);
        }
        .case-card:hover .case-card-img::after {
            opacity: 0.85;
        }
        .case-card-body {
            padding: 20px 22px;
            position: relative;
        }
        .case-card-body .case-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(0, 229, 255, 0.1);
            padding: 4px 10px;
            border-radius: 20px;
            margin-bottom: 8px;
            letter-spacing: 0.04em;
        }
        .case-card-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-heading);
            margin-bottom: 6px;
            position: relative;
            display: inline-block;
        }
        .case-card-body h3::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            transition: width var(--transition-smooth);
            border-radius: 1px;
        }
        .case-card:hover .case-card-body h3::after {
            width: 100%;
        }
        .case-card-body .case-result {
            font-size: 14px;
            color: var(--color-warm);
            font-weight: 600;
            margin-top: 4px;
        }

        /* ========== SOLUTIONS ========== */
        .solutions-wrapper {
            display: grid;
            grid-template-columns: 180px 1fr 1fr;
            gap: 0;
            max-width: 1000px;
            margin: 0 auto;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-card);
        }
        .solutions-col {
            background: var(--color-bg-panel);
        }
        .solutions-col-header {
            background: rgba(123, 47, 255, 0.2);
            padding: 20px 16px;
            text-align: center;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            letter-spacing: 0.02em;
        }
        .solutions-col-header.accent {
            background: rgba(123, 47, 255, 0.35);
            color: #fff;
        }
        .solutions-row {
            display: contents;
        }
        .solutions-row .solutions-cell {
            padding: 16px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 15px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--color-text-body);
        }
        .solutions-row .solutions-cell:first-child {
            font-weight: 600;
            color: #fff;
            background: rgba(255, 255, 255, 0.02);
            font-size: 14px;
            letter-spacing: 0.03em;
        }
        .icon-check {
            color: var(--color-accent);
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
        }
        .icon-cross {
            color: #555;
            font-weight: 400;
            font-size: 16px;
            flex-shrink: 0;
        }
        .solutions-cta-row {
            display: contents;
        }
        .solutions-cta-cell {
            padding: 20px 16px;
            text-align: center;
            background: var(--color-bg-panel);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .solutions-cta-cell .btn {
            width: 100%;
            max-width: 200px;
        }

        /* ========== CONTACT ========== */
        .contact-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: start;
            max-width: 1000px;
            margin: 0 auto;
            background: var(--color-bg-panel);
            border-radius: var(--radius-card);
            padding: 44px;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: var(--shadow-card);
        }
        .contact-wrapper::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(123, 47, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .contact-form {
            position: relative;
            z-index: 1;
        }
        .contact-form h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-muted);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 13px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1.5px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-fast);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.08);
            background: rgba(255, 255, 255, 0.06);
        }
        .form-group textarea {
            min-height: 100px;
        }
        .contact-info {
            position: relative;
            z-index: 1;
            padding-left: 20px;
        }
        .contact-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .contact-info p {
            color: var(--color-text-muted);
            margin-bottom: 12px;
            font-size: 15px;
            line-height: 1.6;
        }
        .contact-info .info-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--color-text-body);
        }
        .contact-info .info-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(0, 229, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            flex-shrink: 0;
            font-size: 16px;
        }
        .contact-decor {
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            border: 2px solid rgba(0, 229, 255, 0.08);
            pointer-events: none;
            z-index: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-group-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            margin-top: 16px;
            margin-bottom: 4px;
            letter-spacing: 0.04em;
            padding-left: 4px;
        }
        .faq-item {
            background: var(--color-bg-card);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--color-border-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-card);
        }
        .faq-item:hover {
            border-color: var(--color-border-card-hover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 22px;
            background: none;
            border: none;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            letter-spacing: 0.01em;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
            transition: all var(--transition-smooth);
            color: #fff;
            font-weight: 300;
            line-height: 1;
        }
        .faq-item.active .faq-icon {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-medium), padding var(--transition-medium);
            padding: 0 22px;
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.65;
            background: rgba(0, 0, 0, 0.2);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 22px 20px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 50px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--padding-h);
            padding-right: var(--padding-h);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col p,
        .footer-col a {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            display: block;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }
        .footer-logo img {
            height: 28px;
            width: auto;
            border-radius: 3px;
        }
        .footer-logo span {
            font-weight: 700;
            color: #fff;
            font-size: 17px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-muted);
            font-size: 16px;
            transition: all var(--transition-fast);
        }
        .footer-social a:hover {
            background: rgba(0, 229, 255, 0.15);
            color: var(--color-accent);
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 28px auto 0;
            padding: 18px var(--padding-h) 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        /* ========== ANIMATIONS ========== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.65s ease, transform 0.65s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .hero-content h1 {
                font-size: 42px;
            }
            .hero-content .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-buttons {
                justify-content: center;
            }
            .hero-visual {
                max-height: 350px;
                aspect-ratio: 16/9;
            }
            .solutions-wrapper {
                grid-template-columns: 140px 1fr 1fr;
                font-size: 14px;
            }
            .solutions-cell {
                padding: 12px 10px;
                font-size: 13px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .case-card:nth-child(even) {
                margin-top: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-title {
                font-size: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .nav-cta.desktop-only {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            :root {
                --section-gap: 60px;
                --nav-height: 60px;
            }
            .hero {
                padding-top: calc(var(--nav-height) + 40px);
                padding-bottom: 50px;
                min-height: auto;
            }
            .hero-content h1 {
                font-size: 34px;
                line-height: 1.2;
            }
            .hero-content .hero-subtitle {
                font-size: 16px;
            }
            .hero-visual {
                max-height: 260px;
                aspect-ratio: 16/9;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .hero-buttons .btn {
                width: 100%;
                max-width: 300px;
            }
            .highlights-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .highlight-card {
                padding: 20px 16px;
            }
            .highlight-card h3 {
                font-size: 17px;
            }
            .highlight-card .metric-value {
                font-size: 26px;
            }
            .cases-grid {
                grid-template-columns: 1fr;
            }
            .solutions-wrapper {
                grid-template-columns: 1fr;
                border-radius: var(--radius-card);
                gap: 0;
            }
            .solutions-col-header {
                font-size: 15px;
                padding: 14px;
            }
            .solutions-row .solutions-cell {
                font-size: 13px;
                padding: 10px 14px;
            }
            .solutions-row .solutions-cell:first-child {
                font-weight: 700;
                font-size: 13px;
            }
            .contact-wrapper {
                grid-template-columns: 1fr;
                padding: 28px 20px;
                gap: 28px;
            }
            .contact-info {
                padding-left: 0;
            }
            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .highlights-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-visual {
                max-height: 200px;
            }
            .section {
                padding-top: 50px;
                padding-bottom: 50px;
            }
            .contact-wrapper {
                padding: 20px 14px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 13px;
            }
            .faq-item.active .faq-answer {
                padding: 12px 16px 16px;
            }
            .footer-bottom {
                font-size: 12px;
            }
            .case-card-body {
                padding: 14px 16px;
            }
            .case-card-body h3 {
                font-size: 17px;
            }
        }