/* roulang page: index */
:root {
            --color-primary: #7B2FFF;
            --color-primary-rgb: 123, 47, 255;
            --color-accent: #00F0FF;
            --color-accent-rgb: 0, 240, 255;
            --color-bg-deep: #0A0A0F;
            --color-bg-mid: #0F0F18;
            --color-bg-card: rgba(18, 18, 30, 0.7);
            --color-bg-card-hover: rgba(22, 22, 38, 0.85);
            --color-text-primary: #ffffff;
            --color-text-secondary: rgba(255, 255, 255, 0.75);
            --color-text-tertiary: rgba(255, 255, 255, 0.55);
            --color-text-muted: rgba(255, 255, 255, 0.4);
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-hover: rgba(123, 47, 255, 0.5);
            --color-danger-bg: rgba(255, 60, 60, 0.08);
            --color-danger-border: rgba(255, 60, 60, 0.2);
            --color-danger-text: #ff5c5c;
            --color-success: #00e676;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 40px;
            --radius-full: 9999px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow-purple: 0 0 24px rgba(123, 47, 255, 0.35);
            --shadow-glow-cyan: 0 0 24px rgba(0, 240, 255, 0.3);
            --shadow-nav: 0 2px 24px rgba(0, 0, 0, 0.6);
            --font-heading: 'Inter', 'SF Pro Display', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
            --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', 'Consolas', monospace;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
            --spacing-3xl: 120px;
            --max-width: 1280px;
            --nav-height-pc: 72px;
            --nav-height-mobile: 56px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg-deep);
            color: var(--color-text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 50% 0%, rgba(123, 47, 255, 0.06) 0%, transparent 70%),
                radial-gradient(ellipse at 80% 30%, rgba(0, 240, 255, 0.04) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 60%, rgba(123, 47, 255, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            html {
                scroll-padding-top: var(--nav-height-mobile);
            }
        }

        /* ============ NAVIGATION ============ */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height-pc);
            background: rgba(10, 10, 18, 0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: border-color var(--transition-smooth), box-shadow var(--transition-smooth), background var(--transition-smooth);
        }

        .nav.scrolled {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-nav);
            background: rgba(10, 10, 18, 0.85);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 22px;
            letter-spacing: 1.5px;
            color: var(--color-text-primary);
            flex-shrink: 0;
            z-index: 1001;
            transition: color var(--transition-fast);
        }

        .nav-logo:hover {
            color: var(--color-accent);
        }

        .nav-logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            position: relative;
            box-shadow: 0 0 16px rgba(123, 47, 255, 0.4);
        }

        .nav-logo-icon::after {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            opacity: 0.3;
            filter: blur(6px);
            z-index: -1;
            animation: logoPulse 3s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                opacity: 0.3;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(1.08);
            }
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--color-text-secondary);
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: width var(--transition-smooth);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--color-text-primary);
        }

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

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: 1px;
            border-radius: var(--radius-xl);
            white-space: nowrap;
            position: relative;
            overflow: hidden;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 4px 16px rgba(123, 47, 255, 0.3);
        }

        .nav-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(123, 47, 255, 0.5), 0 0 40px rgba(0, 240, 255, 0.2);
        }

        .nav-cta-btn:active {
            transform: scale(0.97);
        }

        .nav-cta-btn::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -60%;
            width: 50%;
            height: 200%;
            background: rgba(255, 255, 255, 0.2);
            transform: rotate(25deg);
            animation: btnShine 3s ease-in-out infinite;
        }

        @keyframes btnShine {
            0%,
            100% {
                left: -60%;
            }
            50% {
                left: 120%;
            }
        }

        .nav-hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 1001;
            position: relative;
            gap: 6px;
        }

        .nav-hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 1px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .nav-hamburger.active span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .nav-hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .nav-hamburger.active span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }
            .nav-link {
                font-size: 12px;
                letter-spacing: 1px;
            }
            .nav-cta-btn {
                font-size: 12px;
                padding: 8px 16px;
            }
        }

        @media (max-width: 768px) {
            .nav {
                height: var(--nav-height-mobile);
            }
            .nav-inner {
                padding: 0 16px;
            }
            .nav-links {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(10, 10, 18, 0.92);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 36px;
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-smooth), opacity var(--transition-smooth);
                z-index: 1000;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-link {
                font-size: 18px;
                letter-spacing: 2px;
            }
            .nav-cta-btn {
                font-size: 16px;
                padding: 14px 32px;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
        }

        @media (max-width: 375px) {
            .nav-logo {
                font-size: 15px;
                gap: 6px;
            }
            .nav-logo-icon {
                width: 26px;
                height: 26px;
                font-size: 13px;
            }
            .nav-links {
                gap: 24px;
            }
            .nav-link {
                font-size: 16px;
            }
        }

        /* ============ HERO ============ */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            padding-top: var(--nav-height-pc);
            background:
                radial-gradient(ellipse at center, rgba(123, 47, 255, 0.1) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(0, 240, 255, 0.06) 0%, transparent 50%),
                var(--color-bg-deep);
        }

        .hero-bg-image {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
            filter: saturate(0.6) brightness(0.7);
            mix-blend-mode: screen;
        }

        .hero-watermark {
            position: absolute;
            font-family: var(--font-heading);
            font-size: clamp(120px, 18vw, 280px);
            font-weight: 900;
            color: rgba(123, 47, 255, 0.03);
            letter-spacing: 20px;
            pointer-events: none;
            user-select: none;
            z-index: 0;
            white-space: nowrap;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            animation: watermarkFloat 8s ease-in-out infinite;
        }

        @keyframes watermarkFloat {
            0%,
            100% {
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                transform: translate(-50%, -52%) scale(1.03);
            }
        }

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

        .hero-particle {
            position: absolute;
            width: 2px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 50%;
            animation: particleDrift 6s linear infinite;
            opacity: 0;
        }

        .hero-particle:nth-child(1) {
            left: 15%;
            top: 30%;
            animation-delay: 0s;
            animation-duration: 5s;
        }
        .hero-particle:nth-child(2) {
            left: 75%;
            top: 20%;
            animation-delay: 1.5s;
            animation-duration: 7s;
        }
        .hero-particle:nth-child(3) {
            left: 40%;
            top: 65%;
            animation-delay: 3s;
            animation-duration: 6s;
        }
        .hero-particle:nth-child(4) {
            left: 60%;
            top: 40%;
            animation-delay: 2s;
            animation-duration: 8s;
        }
        .hero-particle:nth-child(5) {
            left: 25%;
            top: 55%;
            animation-delay: 4s;
            animation-duration: 5.5s;
        }
        .hero-particle:nth-child(6) {
            left: 80%;
            top: 60%;
            animation-delay: 1s;
            animation-duration: 6.5s;
        }

        @keyframes particleDrift {
            0% {
                opacity: 0;
                transform: translateY(0) translateX(0);
            }
            20% {
                opacity: 0.8;
            }
            100% {
                opacity: 0;
                transform: translateY(-120px) translateX(30px);
            }
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            padding: 0 24px;
        }

        .hero-tag {
            display: inline-block;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--color-accent);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            padding: 8px 20px;
            border-radius: var(--radius-full);
            margin-bottom: 24px;
            animation: fadeInUp 0.8s ease forwards;
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: clamp(32px, 6vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 1px;
            color: var(--color-text-primary);
            margin-bottom: 20px;
            animation: fadeInUp 0.8s ease 0.15s forwards;
            opacity: 0;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
        }

        .hero-subtitle {
            font-size: clamp(16px, 2.5vw, 20px);
            font-weight: 500;
            line-height: 1.6;
            color: var(--color-text-secondary);
            margin-bottom: 36px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 0.8s ease 0.3s forwards;
            opacity: 0;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 0.8s ease 0.45s forwards;
            opacity: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 1px;
            border-radius: var(--radius-xl);
            position: relative;
            overflow: hidden;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 6px 24px rgba(123, 47, 255, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(123, 47, 255, 0.5), 0 0 48px rgba(0, 240, 255, 0.25);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-primary::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -60%;
            width: 40%;
            height: 200%;
            background: rgba(255, 255, 255, 0.18);
            transform: rotate(25deg);
            animation: btnShine 3.5s ease-in-out infinite;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            background: transparent;
            color: var(--color-text-primary);
            font-weight: 600;
            font-size: 16px;
            letter-spacing: 1px;
            border-radius: var(--radius-xl);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-fast);
            backdrop-filter: blur(4px);
        }

        .btn-secondary:hover {
            border-color: var(--color-accent);
            background: rgba(0, 240, 255, 0.06);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
            transform: translateY(-2px);
        }
        .btn-secondary:active {
            transform: scale(0.97);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding-top: var(--nav-height-mobile);
                min-height: 90vh;
            }
            .hero-watermark {
                font-size: clamp(80px, 22vw, 150px);
                letter-spacing: 10px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 14px 28px;
                font-size: 15px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 12px;
            }
        }

        @media (max-width: 375px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-tag {
                font-size: 11px;
                padding: 6px 14px;
            }
        }

        /* ============ SECTIONS GENERAL ============ */
        .section {
            padding: var(--spacing-3xl) 0;
            position: relative;
        }

        @media (max-width: 768px) {
            .section {
                padding: 80px 0;
            }
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 12px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(28px, 4.5vw, 38px);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 1px;
            color: var(--color-text-primary);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            max-width: 650px;
        }

        .text-center {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .mb-xl {
            margin-bottom: var(--spacing-xl);
        }

        /* ============ PAIN POINTS ============ */
        #pain-points {
            background: var(--color-bg-mid);
            position: relative;
            overflow: hidden;
        }

        #pain-points::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -150px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 60, 60, 0.06) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .pain-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .pain-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .pain-card.danger {
            background: var(--color-danger-bg);
            border-color: var(--color-danger-border);
        }

        .pain-card.danger::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 140px;
            height: 140px;
            background: radial-gradient(circle, rgba(255, 60, 60, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .pain-card.opportunity {
            background: rgba(0, 240, 255, 0.03);
            border-color: rgba(0, 240, 255, 0.15);
        }

        .pain-card.opportunity::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .pain-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-3px);
        }

        .pain-card.danger:hover {
            border-color: rgba(255, 60, 60, 0.5);
            box-shadow: 0 0 28px rgba(255, 60, 60, 0.2);
        }

        .pain-card.opportunity:hover {
            border-color: rgba(0, 240, 255, 0.5);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.2);
        }

        .pain-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .pain-card.danger .pain-card-icon {
            background: rgba(255, 60, 60, 0.15);
            color: var(--color-danger-text);
        }

        .pain-card.opportunity .pain-card-icon {
            background: rgba(0, 240, 255, 0.12);
            color: var(--color-accent);
        }

        .pain-card h3 {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-primary);
        }

        .pain-card p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .pain-card ul {
            margin-top: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .pain-card ul li {
            font-size: 14px;
            color: var(--color-text-tertiary);
            padding-left: 20px;
            position: relative;
        }

        .pain-card ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
        }

        .pain-card.danger ul li::before {
            background: var(--color-danger-text);
        }
        .pain-card.opportunity ul li::before {
            background: var(--color-accent);
        }

        .pain-arrow-down {
            text-align: center;
            margin-top: 24px;
            font-size: 13px;
            color: var(--color-text-muted);
            letter-spacing: 1px;
            position: relative;
            z-index: 1;
            animation: bounceDown 2s ease-in-out infinite;
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(8px);
            }
        }

        @media (max-width: 768px) {
            .pain-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .pain-card {
                padding: 28px;
            }
            .pain-card h3 {
                font-size: 19px;
            }
        }

        /* ============ SOLUTION ============ */
        #solution {
            position: relative;
        }

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

        .solution-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: visible;
            cursor: default;
        }

        .solution-card:nth-child(1) {
            transform: translateY(-20px);
        }
        .solution-card:nth-child(2) {
            transform: translateY(0);
        }
        .solution-card:nth-child(3) {
            transform: translateY(20px);
        }

        .solution-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-8px);
            background: var(--color-bg-card-hover);
        }
        .solution-card:nth-child(1):hover {
            transform: translateY(-28px);
        }
        .solution-card:nth-child(2):hover {
            transform: translateY(-8px);
        }
        .solution-card:nth-child(3):hover {
            transform: translateY(12px);
        }

        .solution-card-img {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            flex-shrink: 0;
        }

        .solution-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .solution-card h3 {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text-primary);
        }

        .solution-card p {
            font-size: 14px;
            color: var(--color-text-tertiary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .solution-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }

        .solution-card-link:hover {
            color: var(--color-accent);
            transform: translateX(4px);
        }

        .solution-card-link .arrow {
            transition: transform var(--transition-fast);
        }
        .solution-card-link:hover .arrow {
            transform: translateX(3px);
        }

        @media (max-width: 1024px) {
            .solution-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .solution-card {
                padding: 24px 18px;
            }
            .solution-card:nth-child(1) {
                transform: translateY(-10px);
            }
            .solution-card:nth-child(3) {
                transform: translateY(10px);
            }
            .solution-card:nth-child(1):hover {
                transform: translateY(-16px);
            }
            .solution-card:nth-child(3):hover {
                transform: translateY(4px);
            }
        }

        @media (max-width: 768px) {
            .solution-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .solution-card:nth-child(1),
            .solution-card:nth-child(2),
            .solution-card:nth-child(3) {
                transform: translateY(0);
            }
            .solution-card:nth-child(1):hover,
            .solution-card:nth-child(2):hover,
            .solution-card:nth-child(3):hover {
                transform: translateY(-4px);
            }
            .solution-card {
                padding: 28px 22px;
            }
        }

        /* ============ RESULTS ============ */
        #results {
            background: var(--color-bg-mid);
            position: relative;
        }

        #results::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 28px 28px;
            pointer-events: none;
            z-index: 0;
        }

        .results-dashboard {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
            z-index: 1;
        }

        .result-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition-smooth);
        }

        .result-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-4px);
        }

        .result-number {
            font-family: var(--font-mono);
            font-size: 48px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }

        .result-label {
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--color-text-tertiary);
            margin-bottom: 16px;
        }

        .result-bar {
            height: 4px;
            border-radius: 2px;
            background: rgba(255, 255, 255, 0.1);
            overflow: hidden;
            position: relative;
        }

        .result-bar-fill {
            height: 100%;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
            width: 0;
        }

        .result-bar-fill.animated {
            width: var(--fill-width);
        }

        @media (max-width: 768px) {
            .results-dashboard {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .result-card {
                padding: 24px 18px;
            }
            .result-number {
                font-size: 36px;
            }
            .result-card:last-child {
                grid-column: 1 / -1;
                max-width: 320px;
                justify-self: center;
                width: 100%;
            }
        }

        @media (max-width: 375px) {
            .results-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .result-number {
                font-size: 28px;
            }
            .result-label {
                font-size: 10px;
                letter-spacing: 1px;
            }
        }

        /* ============ TESTIMONIALS ============ */
        #testimonials {
            position: relative;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .testimonial-card {
            background: var(--color-bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid var(--color-border);
            display: flex;
            gap: 24px;
            align-items: flex-start;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .testimonial-card:hover {
            border-color: var(--color-border-hover);
            box-shadow: var(--shadow-glow-purple);
            transform: translateY(-3px);
        }

        .testimonial-quote-mark {
            position: absolute;
            top: 16px;
            left: 20px;
            font-family: var(--font-heading);
            font-size: 96px;
            font-weight: 900;
            line-height: 1;
            background: linear-gradient(180deg, rgba(123, 47, 255, 0.2) 0%, rgba(0, 240, 255, 0.05) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            color: transparent;
            pointer-events: none;
            user-select: none;
        }

        .testimonial-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            overflow: hidden;
            flex-shrink: 0;
            border: 2px solid rgba(123, 47, 255, 0.4);
            box-shadow: 0 0 16px rgba(123, 47, 255, 0.2);
            margin-top: 8px;
            z-index: 1;
            position: relative;
        }

        .testimonial-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .testimonial-content {
            flex: 1;
            z-index: 1;
            position: relative;
        }

        .testimonial-content blockquote {
            font-size: 16px;
            font-style: italic;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            border: none;
            padding: 0;
        }

        .testimonial-author {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text-primary);
        }

        .testimonial-role {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(123, 47, 255, 0.12);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            margin-top: 6px;
            letter-spacing: 1px;
        }

        @media (max-width: 768px) {
            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .testimonial-card {
                flex-direction: column;
                padding: 28px;
                gap: 16px;
            }
            .testimonial-quote-mark {
                font-size: 64px;
                top: 8px;
                left: 12px;
            }
            .testimonial-avatar {
                width: 48px;
                height: 48px;
                margin-top: 0;
            }
        }

        /* ============ FAQ ============ */
        #faq {
            background: var(--color-bg-mid);
            position: relative;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-bg-card);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.15);
        }

        .faq-item.active {
            border-color: var(--color-primary);
            box-shadow: 0 0 20px rgba(123, 47, 255, 0.2);
            border-left: 3px solid var(--color-primary);
            background: rgba(22, 22, 38, 0.8);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text-primary);
            user-select: none;
            gap: 16px;
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-smooth);
            position: relative;
        }

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

        .faq-icon::before {
            width: 14px;
            height: 2px;
        }
        .faq-icon::after {
            width: 2px;
            height: 14px;
        }

        .faq-item.active .faq-icon {
            background: rgba(123, 47, 255, 0.2);
        }
        .faq-item.active .faq-icon::after {
            transform: rotate(90deg);
            opacity: 0;
        }
        .faq-item.active .faq-icon::before {
            background: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--color-text-tertiary);
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .faq-question {
                font-size: 16px;
                padding: 16px 18px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer-inner {
                padding-left: 22px;
            }
        }

        /* ============ CTA ============ */
        #cta {
            position: relative;
            padding: var(--spacing-3xl) 0;
            text-align: center;
            overflow: hidden;
            background: var(--color-bg-deep);
        }

        .cta-bg-image {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
            filter: saturate(0.4) brightness(0.5) blur(1px);
            mix-blend-mode: screen;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(123, 47, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 60% 40%, rgba(0, 240, 255, 0.05) 0%, transparent 50%);
            z-index: 0;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-title {
            font-family: var(--font-heading);
            font-size: clamp(30px, 5vw, 42px);
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--color-text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-desc {
            font-size: 18px;
            color: var(--color-text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .cta-btn-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 18px 44px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 1.5px;
            border-radius: var(--radius-xl);
            position: relative;
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: 0 8px 32px rgba(123, 47, 255, 0.4);
        }

        .cta-btn-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 48px rgba(123, 47, 255, 0.55), 0 0 56px rgba(0, 240, 255, 0.3);
        }
        .cta-btn-large:active {
            transform: scale(0.97);
        }
        .cta-btn-large::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -60%;
            width: 40%;
            height: 200%;
            background: rgba(255, 255, 255, 0.2);
            transform: rotate(25deg);
            animation: btnShine 3s ease-in-out infinite;
        }

        @media (max-width: 768px) {
            .cta-btn-large {
                width: 100%;
                justify-content: center;
                padding: 16px 32px;
                font-size: 16px;
            }
            .cta-desc {
                font-size: 16px;
            }
        }

        /* ============ FOOTER ============ */
        .footer {
            background: #06060d;
            padding: 64px 0 32px;
            position: relative;
            border-top: 1px solid transparent;
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), var(--color-primary), transparent);
            opacity: 0.5;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--color-text-primary);
            margin-bottom: 20px;
        }

        .footer-col p {
            font-size: 13px;
            color: var(--color-text-tertiary);
            line-height: 1.7;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--color-text-tertiary);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            max-width: var(--max-width);
            margin: 40px auto 0;
            padding: 24px 24px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--color-text-muted);
        }

        .footer-bottom a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
                padding: 0 16px;
            }
            .footer-col:first-child {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                padding: 20px 16px 0;
            }
        }

        @media (max-width: 375px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ============ UTILITY ANIMATIONS ============ */
        [data-aos] {
            transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
        }

        .fade-up {
            animation: fadeInUp 0.7s ease forwards;
        }

        /* Skip to content */
        .skip-to-content {
            position: absolute;
            top: -100px;
            left: 16px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            z-index: 9999;
            font-weight: 600;
            transition: top var(--transition-fast);
        }
        .skip-to-content:focus {
            top: 8px;
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

        /* Smooth reveal for sections */
        .reveal-section {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .reveal-section.visible {
            opacity: 1;
            transform: translateY(0);
        }