/* roulang page: index */
:root {
            --bg-deep: #0A0E27;
            --bg-card: rgba(12, 16, 35, 0.65);
            --bg-card-hover: rgba(16, 22, 45, 0.78);
            --accent-cyan: #00F0FF;
            --accent-purple: #A855F7;
            --text-primary: #E2E8F0;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glass: rgba(0, 240, 255, 0.18);
            --border-glow: rgba(0, 240, 255, 0.3);
            --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
            --shadow-glow-cyan: 0 0 18px rgba(0, 240, 255, 0.5);
            --shadow-glow-cyan-lg: 0 0 28px rgba(0, 240, 255, 0.7);
            --shadow-glow-purple: 0 0 14px rgba(168, 85, 247, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Consolas', 'Courier New', monospace;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Segoe UI', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 72px;
            --section-gap: 120px;
            --section-gap-mobile: 80px;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--nav-height);
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(0, 240, 255, 0.04) 0%, transparent 55%),
                radial-gradient(ellipse at 75% 60%, rgba(168, 85, 247, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 85%, rgba(0, 240, 255, 0.03) 0%, transparent 50%);
            background-attachment: fixed;
        }

        /* Grid overlay texture */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            background-image:
                linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
            background-size: 48px 48px;
            opacity: 0.5;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-cyan);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding: 0 18px;
            }
        }

        /* ============ NAVIGATION ============ */
        #mainNav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            z-index: 1000;
            background: rgba(8, 11, 28, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition-smooth);
        }
        #mainNav::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan) 0%, var(--accent-purple) 50%, var(--accent-cyan) 100%);
            opacity: 0.85;
        }
        #mainNav .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        #mainNav .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        #mainNav .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            font-family: var(--font-mono);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.35);
            letter-spacing: 0;
        }
        #mainNav .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
            line-height: 1;
        }
        #mainNav .logo-sub {
            font-size: 0.7rem;
            color: var(--text-muted);
            display: block;
            line-height: 1;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        #mainNav .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        #mainNav .nav-links a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        #mainNav .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 4px;
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.7);
            transition: transform var(--transition-smooth);
        }
        #mainNav .nav-links a:hover,
        #mainNav .nav-links a.active {
            color: var(--accent-cyan);
        }
        #mainNav .nav-links a:hover::after,
        #mainNav .nav-links a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        #mainNav .hamburger {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        #mainNav .hamburger span {
            display: block;
            width: 28px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 3px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }
        #mainNav .hamburger.active span:nth-child(1) {
            transform: translateY(8.5px) rotate(45deg);
        }
        #mainNav .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        #mainNav .hamburger.active span:nth-child(3) {
            transform: translateY(-8.5px) rotate(-45deg);
        }

        /* Mobile nav panel */
        #mobileNavPanel {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(6, 9, 22, 0.94);
            backdrop-filter: blur(28px);
            -webkit-backdrop-filter: blur(28px);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 38px;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-smooth);
            background-image:
                radial-gradient(ellipse at center, rgba(0, 240, 255, 0.06) 0%, transparent 70%),
                linear-gradient(rgba(0, 240, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 240, 255, 0.02) 1px, transparent 1px);
            background-size: 100% 100%, 40px 40px, 40px 40px;
        }
        #mobileNavPanel.open {
            opacity: 1;
            pointer-events: all;
        }
        #mobileNavPanel a {
            font-size: 1.6rem;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 1px;
            transition: all var(--transition-fast);
            text-shadow: 0 0 0 transparent;
        }
        #mobileNavPanel a:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 18px rgba(0, 240, 255, 0.6);
        }

        @media (max-width: 768px) {
            #mainNav .nav-links {
                display: none;
            }
            #mainNav .hamburger {
                display: flex;
            }
            #mainNav .nav-inner {
                padding: 0 18px;
            }
        }

        /* ============ HERO ============ */
        #hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--nav-height);
            position: relative;
            overflow: hidden;
        }
        #hero .hero-bg-img {
            position: absolute;
            top: 0;
            right: -5%;
            width: 55%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.25;
            mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.7) 0%, transparent 75%);
            -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.7) 0%, transparent 75%);
            pointer-events: none;
            z-index: 0;
        }
        #hero .hash-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
            overflow: hidden;
        }
        #hero .hash-particle {
            position: absolute;
            font-family: var(--font-mono);
            font-size: 0.75rem;
            color: rgba(0, 240, 255, 0.25);
            animation: floatDown linear infinite;
            white-space: nowrap;
            letter-spacing: 2px;
        }
        @keyframes floatDown {
            0% {
                transform: translateY(-120px) translateX(0);
                opacity: 0;
            }
            8% {
                opacity: 1;
            }
            85% {
                opacity: 0.6;
            }
            100% {
                transform: translateY(105vh) translateX(40px);
                opacity: 0;
            }
        }
        #hero .hash-cube-wrap {
            position: relative;
            width: 380px;
            height: 380px;
            flex-shrink: 0;
            z-index: 1;
            perspective: 900px;
        }
        #hero .hash-cube {
            width: 100%;
            height: 100%;
            position: relative;
            transform-style: preserve-3d;
            animation: rotateCube 14s linear infinite;
        }
        @keyframes rotateCube {
            0% {
                transform: rotateX(-25deg) rotateY(0deg);
            }
            100% {
                transform: rotateX(-25deg) rotateY(360deg);
            }
        }
        #hero .hash-cube .face {
            position: absolute;
            width: 220px;
            height: 220px;
            top: 50%;
            left: 50%;
            margin-left: -110px;
            margin-top: -110px;
            border: 2px solid rgba(0, 240, 255, 0.35);
            border-radius: 12px;
            background: rgba(12, 16, 35, 0.4);
            backdrop-filter: blur(4px);
            box-shadow: inset 0 0 40px rgba(0, 240, 255, 0.08), 0 0 30px rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-mono);
            font-size: 0.65rem;
            color: rgba(0, 240, 255, 0.7);
            letter-spacing: 3px;
            overflow: hidden;
            text-align: center;
            word-break: break-all;
            padding: 10px;
        }
        #hero .hash-cube .face:nth-child(1) {
            transform: rotateY(0deg) translateZ(110px);
        }
        #hero .hash-cube .face:nth-child(2) {
            transform: rotateY(90deg) translateZ(110px);
        }
        #hero .hash-cube .face:nth-child(3) {
            transform: rotateY(180deg) translateZ(110px);
        }
        #hero .hash-cube .face:nth-child(4) {
            transform: rotateY(270deg) translateZ(110px);
        }
        #hero .hash-cube .face:nth-child(5) {
            transform: rotateX(90deg) translateZ(110px);
        }
        #hero .hash-cube .face:nth-child(6) {
            transform: rotateX(-90deg) translateZ(110px);
        }
        #hero .hero-content {
            position: relative;
            z-index: 2;
            flex: 1;
            padding-right: 40px;
        }
        #hero .hero-title {
            font-size: 3.2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 18px;
        }
        #hero .hero-title span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        #hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        #hero .hero-metrics {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }
        #hero .hero-metric-capsule {
            background: rgba(12, 16, 35, 0.55);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: 20px;
            padding: 8px 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        #hero .hero-metric-capsule strong {
            color: var(--accent-cyan);
            font-weight: 600;
        }
        #hero .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary-glow {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.3px;
            cursor: pointer;
            border: none;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            box-shadow: var(--shadow-glow-cyan);
            transition: all var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary-glow:hover {
            box-shadow: var(--shadow-glow-cyan-lg);
            color: #fff;
            filter: brightness(1.15);
            transform: translateY(-2px);
        }
        .btn-outline-glow {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.3px;
            cursor: pointer;
            border: 2px solid var(--accent-cyan);
            background: transparent;
            color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
            transition: all var(--transition-smooth);
            text-align: center;
            white-space: nowrap;
        }
        .btn-outline-glow:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.45);
            color: var(--accent-cyan);
            border-color: #fff;
            transform: translateY(-2px);
        }

        @media (max-width: 992px) {
            #hero .hash-cube-wrap {
                width: 260px;
                height: 260px;
            }
            #hero .hash-cube .face {
                width: 150px;
                height: 150px;
                margin-left: -75px;
                margin-top: -75px;
                font-size: 0.5rem;
                letter-spacing: 1px;
            }
            #hero .hash-cube .face:nth-child(1) {
                transform: rotateY(0deg) translateZ(75px);
            }
            #hero .hash-cube .face:nth-child(2) {
                transform: rotateY(90deg) translateZ(75px);
            }
            #hero .hash-cube .face:nth-child(3) {
                transform: rotateY(180deg) translateZ(75px);
            }
            #hero .hash-cube .face:nth-child(4) {
                transform: rotateY(270deg) translateZ(75px);
            }
            #hero .hash-cube .face:nth-child(5) {
                transform: rotateX(90deg) translateZ(75px);
            }
            #hero .hash-cube .face:nth-child(6) {
                transform: rotateX(-90deg) translateZ(75px);
            }
            #hero .hero-title {
                font-size: 2.4rem;
            }
            #hero .hero-content {
                padding-right: 20px;
            }
            #hero .hero-bg-img {
                right: -20%;
                width: 65%;
                opacity: 0.18;
            }
        }
        @media (max-width: 768px) {
            #hero {
                flex-direction: column;
                text-align: center;
                padding-top: calc(var(--nav-height) + 40px);
                min-height: auto;
                padding-bottom: 60px;
            }
            #hero .hero-content {
                padding-right: 0;
                order: 1;
            }
            #hero .hero-title {
                font-size: 2rem;
            }
            #hero .hero-subtitle {
                font-size: 1rem;
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            #hero .hero-metrics {
                justify-content: center;
                gap: 10px;
            }
            #hero .hero-btns {
                justify-content: center;
            }
            #hero .hash-cube-wrap {
                width: 200px;
                height: 200px;
                order: 0;
                margin-bottom: 20px;
            }
            #hero .hash-cube .face {
                width: 110px;
                height: 110px;
                margin-left: -55px;
                margin-top: -55px;
            }
            #hero .hash-cube .face:nth-child(1) {
                transform: rotateY(0deg) translateZ(55px);
            }
            #hero .hash-cube .face:nth-child(2) {
                transform: rotateY(90deg) translateZ(55px);
            }
            #hero .hash-cube .face:nth-child(3) {
                transform: rotateY(180deg) translateZ(55px);
            }
            #hero .hash-cube .face:nth-child(4) {
                transform: rotateY(270deg) translateZ(55px);
            }
            #hero .hash-cube .face:nth-child(5) {
                transform: rotateX(90deg) translateZ(55px);
            }
            #hero .hash-cube .face:nth-child(6) {
                transform: rotateX(-90deg) translateZ(55px);
            }
            #hero .hero-bg-img {
                right: -30%;
                width: 80%;
                opacity: 0.12;
                top: 10%;
                height: 60%;
            }
        }

        /* ============ SECTIONS COMMON ============ */
        .section-gap {
            padding: var(--section-gap) 0;
        }
        @media (max-width: 768px) {
            .section-gap {
                padding: var(--section-gap-mobile) 0;
            }
        }
        .section-label {
            font-size: 0.875rem;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--accent-cyan);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 2.4rem;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.7rem;
            }
            .section-desc {
                font-size: 0.95rem;
            }
        }

        /* ============ STATS ============ */
        #stats .stat-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        #stats .stat-card::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -40%;
            width: 180%;
            height: 180%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            pointer-events: none;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        #stats .stat-card:hover::before {
            opacity: 1;
        }
        #stats .stat-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            transform: translateY(-4px);
            box-shadow: 0 18px 40px -12px rgba(0, 0, 0, 0.7), 0 0 22px rgba(0, 240, 255, 0.15);
        }
        #stats .stat-value {
            font-family: var(--font-mono);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
            letter-spacing: -0.5px;
            margin-bottom: 6px;
            position: relative;
            z-index: 1;
        }
        #stats .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
            position: relative;
            z-index: 1;
        }
        #stats .stat-hash {
            font-family: var(--font-mono);
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 8px;
            letter-spacing: 1px;
            position: relative;
            z-index: 1;
            word-break: break-all;
        }
        #stats .stat-trend {
            display: inline-block;
            font-size: 0.8rem;
            color: #34D399;
            margin-top: 4px;
            font-weight: 500;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            #stats .stat-value {
                font-size: 2rem;
            }
            #stats .stat-card {
                padding: 22px 16px;
            }
        }

        /* ============ SERVICES ============ */
        #services .service-row {
            display: flex;
            align-items: flex-start;
            gap: 48px;
            margin-bottom: 56px;
            position: relative;
        }
        #services .service-row:last-child {
            margin-bottom: 0;
        }
        #services .service-row::after {
            content: '';
            position: absolute;
            left: 68px;
            top: 0;
            bottom: -28px;
            width: 1px;
            background: linear-gradient(180deg, rgba(0, 240, 255, 0.5) 0%, rgba(168, 85, 247, 0.15) 80%, transparent 100%);
            box-shadow: 0 0 6px rgba(0, 240, 255, 0.3);
        }
        #services .service-row:last-child::after {
            bottom: 0;
        }
        #services .service-number {
            font-family: var(--font-mono);
            font-size: 5rem;
            font-weight: 800;
            color: rgba(0, 240, 255, 0.08);
            letter-spacing: -2px;
            line-height: 1;
            flex-shrink: 0;
            width: 140px;
            text-align: right;
            user-select: none;
        }
        #services .service-body {
            flex: 1;
            padding-top: 10px;
        }
        #services .service-body h3 {
            font-size: 1.6rem;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 10px;
        }
        #services .service-body p {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        #services .service-body .service-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--accent-purple);
            border: 1px solid rgba(168, 85, 247, 0.35);
            border-radius: 20px;
            padding: 4px 14px;
            margin-top: 8px;
            letter-spacing: 0.5px;
        }
        #services .service-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-top: 12px;
            border: 1px solid rgba(0, 240, 255, 0.12);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
        }
        #services .service-img img {
            width: 100%;
            height: auto;
            display: block;
        }
        @media (max-width: 992px) {
            #services .service-row {
                flex-direction: column;
                gap: 16px;
            }
            #services .service-row::after {
                left: 20px;
                top: 50px;
                bottom: -20px;
                width: 1px;
            }
            #services .service-number {
                font-size: 3rem;
                width: auto;
                text-align: left;
            }
            #services .service-body {
                padding-top: 0;
            }
        }
        @media (max-width: 768px) {
            #services .service-row {
                gap: 8px;
                margin-bottom: 40px;
            }
            #services .service-row::after {
                left: 10px;
                top: 36px;
                bottom: -16px;
            }
            #services .service-number {
                font-size: 2.2rem;
            }
            #services .service-body h3 {
                font-size: 1.3rem;
            }
        }

        /* ============ COMPARISON ============ */
        #comparison .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.15);
            background: rgba(12, 16, 35, 0.5);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            box-shadow: var(--shadow-card);
        }
        #comparison table {
            width: 100%;
            min-width: 640px;
            border-collapse: collapse;
            color: var(--text-secondary);
        }
        #comparison thead th {
            padding: 18px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 0.95rem;
            color: #F1F5F9;
            border-bottom: 2px solid rgba(0, 240, 255, 0.4);
            background: rgba(10, 14, 39, 0.6);
            letter-spacing: 0.3px;
        }
        #comparison thead th:first-child {
            border-radius: var(--radius-md) 0 0 0;
        }
        #comparison thead th:last-child {
            border-radius: 0 var(--radius-md) 0 0;
        }
        #comparison tbody td {
            padding: 15px 20px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.07);
            font-size: 0.95rem;
            vertical-align: middle;
        }
        #comparison tbody tr:nth-child(even) td {
            background: rgba(0, 240, 255, 0.015);
        }
        #comparison tbody tr:hover td {
            background: rgba(0, 240, 255, 0.04);
        }
        #comparison .check-yes {
            color: var(--accent-purple);
            font-weight: 700;
            font-size: 1.1rem;
            text-shadow: 0 0 8px rgba(168, 85, 247, 0.5);
        }
        #comparison .check-no {
            color: #F87171;
            font-weight: 700;
            font-size: 1.1rem;
        }
        @media (max-width: 768px) {
            #comparison table {
                min-width: 520px;
                font-size: 0.85rem;
            }
            #comparison thead th,
            #comparison tbody td {
                padding: 10px 14px;
            }
        }

        /* ============ FAQ ============ */
        #faq .accordion-item {
            background: transparent;
            border: none;
            margin-bottom: 8px;
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        #faq .accordion-button {
            background: rgba(12, 16, 35, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md) !important;
            color: #E2E8F0;
            font-weight: 500;
            font-size: 1.05rem;
            padding: 18px 22px;
            box-shadow: none;
            transition: all var(--transition-smooth);
            position: relative;
        }
        #faq .accordion-button::after {
            filter: brightness(0) invert(0.8);
            transition: transform var(--transition-smooth);
        }
        #faq .accordion-button:not(.collapsed) {
            background: rgba(16, 22, 45, 0.7);
            border-color: rgba(0, 240, 255, 0.4);
            color: #fff;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.12);
            border-left: 3px solid var(--accent-cyan);
            border-radius: var(--radius-md) var(--radius-md) var(--radius-md) 0 !important;
        }
        #faq .accordion-button:focus {
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
            border-color: rgba(0, 240, 255, 0.5);
        }
        #faq .accordion-body {
            background: rgba(0, 240, 255, 0.025);
            border: 1px solid rgba(0, 240, 255, 0.06);
            border-top: none;
            border-radius: 0 0 var(--radius-md) var(--radius-md);
            color: var(--text-muted);
            padding: 18px 22px;
            line-height: 1.7;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            #faq .accordion-button {
                font-size: 0.95rem;
                padding: 14px 16px;
            }
            #faq .accordion-body {
                padding: 14px 16px;
                font-size: 0.88rem;
            }
        }

        /* ============ CONTACT ============ */
        #contact .contact-card {
            background: var(--bg-card);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            max-width: 640px;
            margin: 0 auto;
            box-shadow: var(--shadow-card), 0 0 40px rgba(0, 240, 255, 0.06);
        }
        #contact .contact-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            text-align: center;
            margin-bottom: 8px;
        }
        #contact .contact-card .contact-sub {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 28px;
        }
        #contact .form-control-custom {
            display: block;
            width: 100%;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(0, 240, 255, 0.3);
            background: rgba(10, 14, 39, 0.6);
            color: #E2E8F0;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            margin-bottom: 16px;
            outline: none;
        }
        #contact .form-control-custom:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.4), 0 0 0 3px rgba(0, 240, 255, 0.06);
            background: rgba(12, 18, 42, 0.75);
        }
        #contact .form-control-custom::placeholder {
            color: rgba(148, 163, 184, 0.55);
        }
        #contact .btn-submit {
            width: 100%;
            padding: 15px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            letter-spacing: 0.5px;
            cursor: pointer;
            border: none;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            color: #fff;
            box-shadow: var(--shadow-glow-cyan);
            transition: all var(--transition-smooth);
            text-align: center;
        }
        #contact .btn-submit:hover {
            box-shadow: var(--shadow-glow-cyan-lg);
            filter: brightness(1.15);
            transform: translateY(-2px);
        }
        #contact .privacy-note {
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 14px;
        }
        #contact .privacy-note a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        @media (max-width: 768px) {
            #contact .contact-card {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            #contact .contact-card h3 {
                font-size: 1.4rem;
            }
        }

        /* ============ FOOTER ============ */
        #siteFooter {
            background: rgba(6, 9, 20, 0.85);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 36px 0;
            text-align: center;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }
        #siteFooter .footer-links {
            display: flex;
            gap: 24px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 16px;
            list-style: none;
            padding: 0;
        }
        #siteFooter .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        #siteFooter .footer-links a:hover {
            color: var(--accent-cyan);
        }
        #siteFooter .footer-copy {
            color: var(--text-muted);
            font-size: 0.82rem;
            letter-spacing: 0.3px;
        }
        #siteFooter .footer-copy strong {
            color: var(--text-secondary);
            font-weight: 500;
        }