/* roulang page: index */
:root {
            --bg-primary: #080d15;
            --bg-secondary: #0f1621;
            --bg-card: #141c28;
            --bg-card-hover: #1a2333;
            --bg-elevated: #1c2535;
            --text-primary: #f0f2f5;
            --text-secondary: #c5cad4;
            --text-muted: #8895a7;
            --text-weak: #5e6b7c;
            --accent-green: #0fcf6e;
            --accent-green-hover: #0bb85e;
            --accent-green-glow: rgba(15, 207, 110, 0.35);
            --accent-gold: #f0b90b;
            --accent-gold-hover: #d4a309;
            --accent-red: #e8453c;
            --accent-blue: #3b82f6;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-soft: rgba(255, 255, 255, 0.10);
            --border-medium: rgba(255, 255, 255, 0.16);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 22px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 14px 44px rgba(0, 0, 0, 0.55);
            --shadow-glow-green: 0 0 30px rgba(15, 207, 110, 0.2);
            --shadow-glow-gold: 0 0 30px rgba(240, 185, 11, 0.18);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-display: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --nav-height: 68px;
            --container-max: 1200px;
            --section-gap: 80px;
        }

        *,
        *::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;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-tap-highlight-color: transparent;
        }

        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;
            outline: none;
        }
        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-display);
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.6rem, 3.2vw, 2.4rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
        }
        p {
            color: var(--text-secondary);
        }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: background var(--transition-normal), box-shadow var(--transition-normal), backdrop-filter var(--transition-normal);
            background: transparent;
            backdrop-filter: blur(0px);
            -webkit-backdrop-filter: blur(0px);
        }
        .site-header.scrolled {
            background: rgba(8, 13, 21, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
            border-bottom: 1px solid var(--border-subtle);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1001;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-green), #06a34e);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-green);
        }
        .logo-text {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.3rem;
            color: #fff;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--accent-green);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-links a {
            display: inline-block;
            padding: 9px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.94rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a:focus-visible {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.nav-cta-btn {
            background: var(--accent-green);
            color: #000;
            font-weight: 700;
            padding: 9px 22px;
            box-shadow: var(--shadow-glow-green);
        }
        .nav-links a.nav-cta-btn:hover {
            background: var(--accent-green-hover);
            color: #000;
            box-shadow: 0 0 36px rgba(15, 207, 110, 0.4);
            transform: translateY(-1px);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            padding: 8px;
            width: 42px;
            height: 36px;
            justify-content: center;
            align-items: center;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 3px;
            transition: all var(--transition-fast);
            transform-origin: center;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            background-position: center 30%;
            overflow: hidden;
            padding: 100px 24px 80px;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8, 13, 21, 0.78) 0%, rgba(8, 13, 21, 0.88) 50%, rgba(8, 13, 21, 0.96) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 55% 40%, rgba(15, 207, 110, 0.12) 0%, transparent 65%);
            z-index: 2;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 780px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            padding: 7px 20px;
            border-radius: 50px;
            background: rgba(15, 207, 110, 0.12);
            border: 1px solid rgba(15, 207, 110, 0.3);
            color: var(--accent-green);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            animation: pulse-badge 2.4s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(15, 207, 110, 0.35);
            }
            50% {
                box-shadow: 0 0 0 16px rgba(15, 207, 110, 0);
            }
        }
        .hero h1 {
            color: #fff;
            font-size: clamp(2.2rem, 5.5vw, 3.8rem);
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 16px;
        }
        .hero h1 .highlight {
            color: var(--accent-green);
            position: relative;
        }
        .hero-subtitle {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: var(--text-secondary);
            margin-bottom: 36px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition-normal);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--accent-green);
            color: #000;
            box-shadow: var(--shadow-glow-green);
        }
        .btn-primary:hover {
            background: var(--accent-green-hover);
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(15, 207, 110, 0.45);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-3px);
        }
        .btn-sm {
            padding: 10px 20px;
            font-size: 0.9rem;
            border-radius: 50px;
        }
        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 50px;
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .hero-stat-num .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent-green);
            margin-left: 2px;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 24px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-label {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 50px;
            background: rgba(15, 207, 110, 0.08);
            color: var(--accent-green);
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .section-header h2 {
            margin-bottom: 10px;
        }
        .section-header p {
            color: var(--text-muted);
            max-width: 540px;
            margin: 0 auto;
            font-size: 1.02rem;
        }

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 3px;
            background: var(--accent-green);
            border-radius: 0 0 6px 6px;
            transition: width var(--transition-slow);
        }
        .feature-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-soft);
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card:hover::before {
            width: 60%;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: rgba(15, 207, 110, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: var(--accent-green);
            transition: all var(--transition-normal);
        }
        .feature-card:hover .feature-icon {
            background: rgba(15, 207, 110, 0.2);
            box-shadow: var(--shadow-glow-green);
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Services */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            border-color: var(--border-soft);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .service-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }
        .service-card-body {
            padding: 24px 26px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-body h3 {
            margin-bottom: 6px;
        }
        .service-card-body p {
            font-size: 0.93rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex: 1;
        }
        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-muted);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }
        .tag.accent {
            background: rgba(15, 207, 110, 0.1);
            border-color: rgba(15, 207, 110, 0.25);
            color: var(--accent-green);
        }

        /* Stats */
        .stats-section {
            background: url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            position: relative;
            padding: var(--section-gap) 24px;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 13, 21, 0.9);
            z-index: 1;
        }
        .stats-inner {
            position: relative;
            z-index: 2;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-card {
            background: rgba(20, 28, 40, 0.75);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            border-color: var(--border-soft);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-num .plus {
            color: var(--accent-green);
            font-size: 1.6rem;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Process */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border-subtle);
            z-index: 0;
            display: none;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 10px;
        }
        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--border-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 900;
            font-size: 1.2rem;
            color: var(--accent-green);
            transition: all var(--transition-normal);
            position: relative;
        }
        .process-step:hover .step-num {
            border-color: var(--accent-green);
            box-shadow: var(--shadow-glow-green);
            background: rgba(15, 207, 110, 0.08);
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
        }
        .faq-item:hover {
            border-color: var(--border-soft);
        }
        .faq-question {
            width: 100%;
            background: none;
            color: var(--text-primary);
            padding: 18px 22px;
            text-align: left;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            cursor: pointer;
            transition: color var(--transition-fast);
            border: none;
            outline: none;
        }
        .faq-question:hover {
            color: var(--accent-green);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition-normal);
            color: var(--text-muted);
        }
        .faq-item.open .faq-icon {
            background: rgba(15, 207, 110, 0.15);
            color: var(--accent-green);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.6;
        }
        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 22px 20px;
        }

        /* CTA */
        .cta-section {
            background: url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            position: relative;
            padding: 90px 24px;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(8, 13, 21, 0.88);
            z-index: 1;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            margin-bottom: 12px;
            font-size: clamp(1.6rem, 3.5vw, 2.5rem);
        }
        .cta-inner p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            font-size: 1.05rem;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.08);
            border: 2px solid rgba(255, 255, 255, 0.16);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }
        .cta-form input:focus {
            border-color: var(--accent-green);
            background: rgba(255, 255, 255, 0.12);
            box-shadow: 0 0 0 6px rgba(15, 207, 110, 0.06);
        }
        .cta-form input::placeholder {
            color: var(--text-weak);
        }
        .cta-form .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 24px 28px;
            text-align: center;
        }
        .footer-inner {
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            margin-bottom: 20px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
            font-weight: 500;
        }
        .footer-links a:hover {
            color: var(--accent-green);
        }
        .footer-copy {
            color: var(--text-weak);
            font-size: 0.82rem;
            line-height: 1.6;
        }
        .footer-copy strong {
            color: var(--text-muted);
            font-weight: 600;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .process-steps::before {
                display: none;
            }
            .hero-stats-row {
                gap: 24px;
            }
            :root {
                --section-gap: 56px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: rgba(14, 20, 30, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 100px 28px 40px;
                gap: 4px;
                transition: right var(--transition-normal);
                box-shadow: -8px 0 30px rgba(0, 0, 0, 0.6);
                border-left: 1px solid var(--border-subtle);
                align-items: stretch;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-links a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
                text-align: left;
            }
            .nav-links a.nav-cta-btn {
                text-align: center;
                margin-top: 8px;
            }
            .hamburger {
                display: flex;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .services-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-num {
                font-size: 2rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hero-stats-row {
                gap: 18px;
                flex-direction: column;
                align-items: center;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
                max-width: 320px;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                max-width: 380px;
            }
            .cta-form .btn {
                width: 100%;
                max-width: 380px;
                justify-content: center;
            }
            :root {
                --section-gap: 44px;
            }
            .service-card-img {
                height: 170px;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: auto;
                padding: 120px 16px 60px;
            }
            .hero h1 {
                font-size: 1.75rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-num {
                font-size: 1.6rem;
            }
            .stat-label {
                font-size: 0.78rem;
            }
            .section {
                padding: 40px 16px;
            }
            .section-header {
                margin-bottom: 30px;
            }
            .feature-card {
                padding: 22px 16px 20px;
            }
            .footer-links {
                gap: 12px;
                font-size: 0.82rem;
            }
            .container {
                padding: 0 12px;
            }
            .header-inner {
                padding: 0 16px;
            }
            :root {
                --nav-height: 58px;
                --section-gap: 36px;
            }
            .service-card-img {
                height: 150px;
            }
        }

        /* Overlay for mobile nav */
        .nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-normal);
        }
        .nav-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }