/* roulang page: index */
:root {
            --bg-deep: #08080F;
            --bg-card: #101018;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --cyber-cyan: #00D4FF;
            --cyber-purple: #7B3FF2;
            --cta-orange: #FF5C28;
            --data-green: #00E676;
            --body-white: #EAEAF0;
            --sub-gray: #8A8AA0;
            --danger-red: #FF3B3B;
            --radius-card: 14px;
            --radius-btn-sm: 8px;
            --radius-input: 10px;
            --radius-faq: 10px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 24px rgba(0, 212, 255, 0.12);
            --shadow-cta: 0 4px 16px rgba(255, 92, 40, 0.25);
            --shadow-cta-hover: 0 8px 28px rgba(255, 92, 40, 0.45);
            --shadow-nav: 0 2px 20px rgba(0, 0, 0, 0.5);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-cta: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
            --font-en: "Inter", "SF Pro Display", system-ui;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-cn);
            background-color: var(--bg-deep);
            color: var(--body-white);
            line-height: 1.75;
            font-size: 16px;
            font-weight: 400;
            min-height: 100vh;
            overflow-x: hidden;
            background-image:
                radial-gradient(circle at 50% 0%, rgba(123, 63, 242, 0.04) 0%, transparent 60%),
                radial-gradient(circle at 85% 20%, rgba(0, 212, 255, 0.03) 0%, transparent 50%),
                linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
            background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
            background-position: 0 0, 0 0, 0 0, 0 0;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition-cta);
        }

        button:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--cyber-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
        }

        /* Container */
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (max-width: 767px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* Section spacing */
        section {
            padding-top: 90px;
            padding-bottom: 90px;
        }
        @media (max-width: 767px) {
            section {
                padding-top: 60px;
                padding-bottom: 60px;
            }
        }

        /* ===== NAVIGATION ===== */
        .nav-bar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(8, 8, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 212, 255, 0.12);
            box-shadow: var(--shadow-nav);
            transition: background 0.4s ease, box-shadow 0.4s ease;
            display: flex;
            align-items: center;
        }
        .nav-bar.scrolled {
            background: rgba(8, 8, 15, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(0, 212, 255, 0.08);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }
        @media (max-width: 767px) {
            .nav-inner {
                padding: 0 16px;
            }
        }
        .nav-logo {
            font-size: 20px;
            font-weight: 700;
            color: var(--body-white);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-logo .logo-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--cyber-cyan), var(--cyber-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: #B0B0C0;
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color 0.25s ease;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--cyber-cyan);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            transform: translateX(-50%);
            width: 6px;
            height: 3px;
            border-radius: 2px;
            background: var(--cyber-cyan);
        }
        .nav-cta-sm {
            display: inline-block;
            padding: 8px 18px;
            background: var(--cta-orange);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 14px;
            border-radius: var(--radius-btn-sm);
            white-space: nowrap;
            box-shadow: 0 2px 10px rgba(255, 92, 40, 0.25);
            transition: all var(--transition-cta);
            cursor: pointer;
            border: none;
            flex-shrink: 0;
        }
        .nav-cta-sm:hover {
            box-shadow: 0 6px 20px rgba(255, 92, 40, 0.5);
            transform: scale(1.04);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            z-index: 55;
            background: none;
            border: none;
            padding: 6px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #EAEAF0;
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile drawer */
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: #08080F;
            z-index: 48;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 24px;
            transform: translateX(100%);
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            pointer-events: none;
        }
        .mobile-drawer.open {
            transform: translateX(0);
            pointer-events: auto;
        }
        .mobile-drawer a {
            font-size: 20px;
            font-weight: 600;
            color: #B0B0C0;
            transition: color 0.25s ease;
        }
        .mobile-drawer a:hover {
            color: var(--cyber-cyan);
        }
        .mobile-drawer .drawer-cta {
            display: inline-block;
            padding: 10px 28px;
            background: var(--cta-orange);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius-btn-sm);
            box-shadow: 0 4px 16px rgba(255, 92, 40, 0.3);
            cursor: pointer;
            border: none;
            transition: all var(--transition-cta);
        }
        .mobile-drawer .drawer-cta:hover {
            box-shadow: 0 8px 28px rgba(255, 92, 40, 0.55);
            transform: scale(1.04);
        }
        .drawer-close {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 28px;
            color: #EAEAF0;
            cursor: pointer;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 56;
        }

        @media (max-width: 767px) {
            .nav-links {
                display: none;
            }
            .nav-cta-sm {
                display: none;
            }
            .hamburger {
                display: flex;
            }
        }
        @media (min-width: 768px) {
            .mobile-drawer {
                display: none;
            }
        }

        /* ===== HERO ===== */
        #hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: 64px;
            overflow: hidden;
        }
        #hero::before {
            content: '';
            position: absolute;
            top: 20%;
            right: 10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        #hero::after {
            content: '';
            position: absolute;
            bottom: 15%;
            left: 5%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(123, 63, 242, 0.07) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            width: 100%;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 767px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                text-align: center;
            }
        }
        .hero-left {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .hero-h1 {
            font-size: 52px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            color: #FFFFFF;
            margin: 0;
        }
        .hero-h1 .highlight {
            color: var(--cyber-cyan);
            position: relative;
            display: inline-block;
        }
        .hero-h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 6px;
            background: rgba(0, 212, 255, 0.2);
            border-radius: 3px;
            z-index: -1;
        }
        .hero-h2 {
            font-size: 18px;
            font-weight: 400;
            line-height: 1.65;
            color: var(--sub-gray);
            max-width: 480px;
            margin: 0;
        }
        @media (max-width: 767px) {
            .hero-h2 {
                max-width: 100%;
                margin: 0 auto;
            }
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 767px) {
            .hero-btns {
                justify-content: center;
            }
        }
        .btn-primary {
            display: inline-block;
            padding: 14px 32px;
            background: var(--cta-orange);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 16px;
            border-radius: 10px;
            box-shadow: var(--shadow-cta);
            transition: all var(--transition-cta);
            cursor: pointer;
            border: none;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary:hover {
            box-shadow: var(--shadow-cta-hover);
            transform: scale(1.04);
        }
        .btn-secondary {
            display: inline-block;
            padding: 14px 32px;
            background: transparent;
            color: var(--cyber-cyan);
            font-weight: 600;
            font-size: 16px;
            border-radius: 10px;
            border: 1.5px solid var(--cyber-cyan);
            transition: all var(--transition-cta);
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: rgba(0, 212, 255, 0.08);
        }
        /* Radar visual */
        .radar-container {
            position: relative;
            width: 100%;
            max-width: 420px;
            aspect-ratio: 1/1;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .radar-ring {
            position: absolute;
            border-radius: 50%;
            border: 1px solid rgba(0, 212, 255, 0.2);
            animation: radarPulse 4s ease-in-out infinite;
        }
        .radar-ring:nth-child(1) {
            width: 100%;
            height: 100%;
            animation-delay: 0s;
        }
        .radar-ring:nth-child(2) {
            width: 70%;
            height: 70%;
            animation-delay: 0.8s;
        }
        .radar-ring:nth-child(3) {
            width: 40%;
            height: 40%;
            animation-delay: 1.6s;
            border-color: rgba(0, 212, 255, 0.35);
        }
        .radar-scan {
            position: absolute;
            width: 50%;
            height: 2px;
            background: linear-gradient(90deg, transparent 0%, rgba(0, 212, 255, 0.7) 60%, rgba(0, 212, 255, 0) 100%);
            border-radius: 1px;
            transform-origin: left center;
            animation: radarSpin 8s linear infinite;
            top: 50%;
            left: 50%;
        }
        .radar-dot {
            position: absolute;
            width: 6px;
            height: 6px;
            background: var(--cyber-cyan);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(0, 212, 255, 0.8), 0 0 30px rgba(0, 212, 255, 0.4);
            animation: dotBlink 2s ease-in-out infinite;
        }
        .radar-dot:nth-child(5) {
            top: 25%;
            left: 55%;
            animation-delay: 0s;
        }
        .radar-dot:nth-child(6) {
            top: 60%;
            left: 30%;
            animation-delay: 0.7s;
        }
        .radar-dot:nth-child(7) {
            top: 40%;
            left: 70%;
            animation-delay: 1.4s;
        }
        @keyframes radarPulse {
            0%,
            100% {
                opacity: 0.5;
                transform: scale(1);
            }
            50% {
                opacity: 1;
                transform: scale(1.05);
            }
        }
        @keyframes radarSpin {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }
        @keyframes dotBlink {
            0%,
            100% {
                opacity: 0.4;
                transform: scale(1);
            }
            50% {
                opacity: 1;
                transform: scale(1.8);
            }
        }
        @media (max-width: 767px) {
            .hero-h1 {
                font-size: 38px;
            }
            .radar-container {
                max-width: 280px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .hero-h1 {
                font-size: 44px;
            }
        }
        @media (min-width: 1024px) {
            .hero-h1 {
                font-size: 54px;
            }
        }

        /* ===== SECTION HEADINGS ===== */
        .section-h2 {
            font-size: 34px;
            font-weight: 600;
            line-height: 1.3;
            color: #FFFFFF;
            text-align: center;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--sub-gray);
            text-align: center;
            max-width: 600px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }
        @media (max-width: 767px) {
            .section-h2 {
                font-size: 27px;
                margin-bottom: 12px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 36px;
            }
        }

        /* ===== PAIN POINT CARDS ===== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 767px) {
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        .pain-card {
            background: rgba(255, 255, 255, 0.025);
            border-radius: 12px;
            padding: 24px;
            transition: background 0.35s ease, border-color 0.35s ease;
            border: 1px solid transparent;
            position: relative;
        }
        .pain-card:hover {
            background: rgba(255, 255, 255, 0.04);
            border-color: rgba(0, 212, 255, 0.15);
        }
        .pain-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 14px;
            background: rgba(255, 59, 59, 0.12);
            color: #FF6B6B;
        }
        .pain-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #EAEAF0;
            margin: 0 0 6px 0;
        }
        .pain-card p {
            font-size: 14px;
            color: var(--sub-gray);
            margin: 0;
            line-height: 1.5;
        }

        /* ===== SOLUTION CARDS ===== */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 767px) {
            .solution-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        .solution-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
            position: relative;
            box-shadow: var(--shadow-card);
        }
        .solution-card:hover {
            border-color: rgba(0, 212, 255, 0.35);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(0, 212, 255, 0.15);
            transform: translateY(-4px);
        }
        .solution-card .card-img {
            width: 100%;
            height: 160px;
            border-radius: 10px;
            object-fit: cover;
            margin-bottom: 18px;
            background: rgba(255, 255, 255, 0.03);
            flex-shrink: 0;
        }
        .solution-card h3 {
            font-size: 22px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 10px 0;
            line-height: 1.3;
        }
        .solution-card p {
            font-size: 15px;
            color: var(--sub-gray);
            margin: 0 0 16px 0;
            line-height: 1.6;
            flex-grow: 1;
        }
        .solution-card .card-stat {
            font-family: var(--font-en);
            font-size: 36px;
            font-weight: 700;
            color: var(--cyber-cyan);
            line-height: 1;
            margin-top: auto;
        }
        .solution-card .card-stat-label {
            font-size: 13px;
            color: var(--sub-gray);
            margin-top: 4px;
        }

        /* ===== RESULTS ===== */
        #results {
            position: relative;
        }
        #results::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 30% 50%, rgba(0, 212, 255, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(123, 63, 242, 0.03) 0%, transparent 60%);
            pointer-events: none;
            z-index: 0;
        }
        .results-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 767px) {
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .results-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        .result-item {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.04);
        }
        .result-number {
            font-family: var(--font-en);
            font-size: 52px;
            font-weight: 700;
            color: var(--data-green);
            line-height: 1;
            letter-spacing: -0.02em;
        }
        .result-label {
            font-size: 14px;
            color: var(--sub-gray);
            margin-top: 8px;
            line-height: 1.4;
        }
        @media (max-width: 767px) {
            .result-number {
                font-size: 38px;
            }
        }

        /* ===== TESTIMONIALS ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 767px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-card);
            padding: 28px;
            border-left: 4px solid var(--cyber-purple);
            position: relative;
            box-shadow: var(--shadow-card);
        }
        .testimonial-card .quote {
            font-size: 15px;
            color: #D0D0E0;
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 18px;
            position: relative;
            padding-left: 20px;
        }
        .testimonial-card .quote::before {
            content: '"';
            position: absolute;
            left: 0;
            top: -4px;
            font-size: 32px;
            color: var(--cyber-purple);
            font-weight: 700;
            line-height: 1;
            font-style: normal;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--sub-gray);
        }
        .testimonial-author .author-info {
            font-size: 14px;
        }
        .testimonial-author .author-info strong {
            color: #EAEAF0;
            font-weight: 600;
            display: block;
        }
        .testimonial-author .author-info span {
            color: var(--sub-gray);
            font-size: 13px;
        }

        /* ===== CTA SECTION ===== */
        #cta {
            position: relative;
            text-align: center;
            padding-top: 100px;
            padding-bottom: 100px;
            background:
                radial-gradient(ellipse at 50% 40%, rgba(123, 63, 242, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 50% 60%, rgba(0, 212, 255, 0.04) 0%, transparent 50%);
        }
        @media (max-width: 767px) {
            #cta {
                padding-top: 70px;
                padding-bottom: 70px;
            }
        }
        .cta-title {
            font-size: 34px;
            font-weight: 600;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .cta-subtitle {
            font-size: 16px;
            color: var(--sub-gray);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .btn-cta-large {
            display: inline-block;
            padding: 18px 48px;
            background: var(--cta-orange);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 18px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(255, 92, 40, 0.3);
            transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            border: none;
        }
        .btn-cta-large:hover {
            box-shadow: 0 0 40px rgba(255, 92, 40, 0.6), 0 8px 28px rgba(255, 92, 40, 0.4);
            transform: scale(1.05);
        }
        .cta-disclaimer {
            font-size: 12px;
            color: var(--sub-gray);
            margin-top: 12px;
        }
        @media (max-width: 767px) {
            .cta-title {
                font-size: 27px;
            }
            .btn-cta-large {
                padding: 16px 36px;
                font-size: 16px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.025);
            border-radius: var(--radius-faq);
            overflow: hidden;
            border: 1px solid transparent;
            transition: border-color 0.3s ease;
        }
        .faq-item.open {
            border-color: rgba(0, 212, 255, 0.2);
        }
        .faq-question {
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 500;
            color: #EAEAF0;
            font-size: 16px;
            user-select: none;
            transition: color 0.25s ease;
            gap: 12px;
        }
        .faq-question:hover {
            color: #FFFFFF;
        }
        .faq-item.open .faq-question {
            color: #FFFFFF;
            border-bottom: 1px solid rgba(0, 212, 255, 0.25);
        }
        .faq-icon {
            font-size: 18px;
            color: var(--sub-gray);
            transition: transform 0.35s ease;
            flex-shrink: 0;
            width: 24px;
            text-align: center;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--cyber-cyan);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            background: rgba(0, 0, 0, 0.2);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px;
            color: #9A9AB0;
            font-size: 15px;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer-inner {
            padding: 16px 20px;
        }

        /* ===== FOOTER ===== */
        footer {
            background: #060610;
            padding-top: 60px;
            padding-bottom: 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #EAEAF0;
            margin-bottom: 14px;
        }
        .footer-col p,
        .footer-col a {
            font-size: 14px;
            color: var(--sub-gray);
            line-height: 1.6;
            display: block;
            margin-bottom: 6px;
            transition: color 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--cyber-cyan);
        }
        .footer-logo-text {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .footer-social-icons {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .footer-social-icons .soc-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--sub-gray);
            font-size: 14px;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .footer-social-icons .soc-icon:hover {
            background: rgba(0, 212, 255, 0.15);
            color: var(--cyber-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            text-align: center;
            font-size: 13px;
            color: var(--sub-gray);
        }
        .footer-bottom span {
            margin: 0 8px;
        }

        /* ===== SCROLL ANIMATIONS ===== */
        .fade-in-up {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .stagger-child {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.55s ease, transform 0.55s ease;
        }
        .stagger-child.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== MISC ===== */
        .text-cyan {
            color: var(--cyber-cyan);
        }
        .text-purple {
            color: var(--cyber-purple);
        }
        .text-orange {
            color: var(--cta-orange);
        }

        @media (max-width: 480px) {
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-secondary {
                width: 100%;
                max-width: 280px;
                text-align: center;
            }
            .solution-card .card-img {
                height: 140px;
            }
            .result-number {
                font-size: 34px;
            }
        }