/* =========================================================
           1. ROOT / RESET
           ========================================================= */
        :root {
            --bg-dark: #050505;
            --bg-dark-2: #090909;
            --bg-dark-3: #101010;
            --bg-card: rgba(20, 20, 20, 0.62);
            --bg-card-strong: rgba(18, 18, 18, 0.88);
            --bg-soft: rgba(255, 255, 255, 0.03);
            --bg-footer: #080808;

            --primary: #00f2ff;
            --primary-soft: rgba(0, 242, 255, 0.12);
            --primary-soft-2: rgba(0, 242, 255, 0.2);
            --accent: #ff0055;
            --accent-soft: rgba(255, 0, 85, 0.16);
            --success: #00ff88;
            --warning: #ffcc00;

            --text-main: #ffffff;
            --text-soft: #e2e8f0;
            --text-muted: #94a3b8;
            --text-dim: #64748b;

            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);

            --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 20px 60px rgba(0, 0, 0, 0.35);
            --shadow-neon: 0 0 30px rgba(0, 242, 255, 0.18);
            --shadow-neon-strong: 0 0 50px rgba(0, 242, 255, 0.28);

            --glass: 15px;
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 24px;
            --radius-xl: 32px;

            --font-body: "Be Vietnam Pro", "Inter", sans-serif;
            --font-code: "JetBrains Mono", monospace;

            --container: 1400px;
            --nav-height: 80px;

            --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            outline: none;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background:
                radial-gradient(circle at top left, rgba(0, 242, 255, 0.08), transparent 28%),
                radial-gradient(circle at top right, rgba(255, 0, 85, 0.06), transparent 24%),
                linear-gradient(180deg, #030303 0%, #050505 35%, #070707 100%);
            color: var(--text-main);
            font-family: var(--font-body);
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

        button,
        input,
        textarea,
        select {
            font: inherit;
            border: none;
            background: none;
            color: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        ::selection {
            background: rgba(0, 242, 255, 0.25);
            color: #fff;
        }

        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #070707;
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, #1e293b, var(--primary));
            border-radius: 30px;
        }

        /* =========================================================
           2. GLOBAL HELPERS
           ========================================================= */
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            position: relative;
            padding: 100px 0;
        }

        .section-sm {
            padding: 70px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 10px 18px;
            border-radius: 999px;
            font-family: var(--font-code);
            font-size: 0.84rem;
            color: var(--primary);
            border: 1px solid rgba(0, 242, 255, 0.16);
            background: rgba(0, 242, 255, 0.06);
            margin-bottom: 18px;
            letter-spacing: 0.6px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 3.5rem);
            font-weight: 900;
            line-height: 1.1;
            letter-spacing: -1px;
            margin-bottom: 16px;
        }

        .section-title span {
            color: var(--primary);
        }

        .section-desc {
            max-width: 760px;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 1rem;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

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

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(var(--glass));
            -webkit-backdrop-filter: blur(var(--glass));
            box-shadow: var(--shadow-sm);
        }

        .neon-line {
            position: absolute;
            inset: auto 0 0 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0.6;
        }

        .muted {
            color: var(--text-muted);
        }

        .code {
            font-family: var(--font-code);
        }

        .highlight {
            color: var(--primary);
        }

        .accent {
            color: var(--accent);
        }

        .text-gradient {
            background: linear-gradient(90deg, #ffffff 0%, var(--primary) 55%, #ffffff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 15px 22px;
            border-radius: 14px;
            font-weight: 800;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #000;
            box-shadow: 0 0 20px rgba(0, 242, 255, 0.18);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(0, 242, 255, 0.4);
            background: #fff;
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.03);
            color: #fff;
            border: 1px solid var(--border-strong);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-neon);
        }

        .btn-sm {
            padding: 12px 16px;
            font-size: 0.86rem;
            border-radius: 12px;
        }

        .pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 999px;
            padding: 8px 14px;
            font-size: 0.8rem;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-soft);
            white-space: nowrap;
        }

        .status-online {
            color: var(--success);
        }

        .blur-orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(70px);
            opacity: 0.18;
            pointer-events: none;
        }

        .orb-1 {
            width: 280px;
            height: 280px;
            background: var(--primary);
            top: 60px;
            left: -80px;
        }

        .orb-2 {
            width: 250px;
            height: 250px;
            background: var(--accent);
            right: -60px;
            top: 160px;
        }

        .reveal {
            opacity: 0;
            transform: translateY(26px);
            transition: 0.8s ease;
        }

        .reveal.show {
            opacity: 1;
            transform: translateY(0);
        }

        /* =========================================================
           3. PRELOADER
           ========================================================= */
        #loader {
            position: fixed;
            inset: 0;
            background:
                radial-gradient(circle at center, rgba(0, 242, 255, 0.06), transparent 30%),
                #000;
            z-index: 9999;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            gap: 18px;
            transition: opacity 0.55s ease, visibility 0.55s ease;
        }

        .loader-spinner {
            width: 60px;
            height: 60px;
            border: 3px solid rgba(0, 242, 255, 0.22);
            border-top-color: var(--primary);
            border-right-color: rgba(255, 255, 255, 0.65);
            border-radius: 50%;
            animation: spin 1s linear infinite;
            box-shadow: 0 0 30px rgba(0, 242, 255, 0.2);
        }

        .loader-text {
            font-family: var(--font-code);
            color: var(--primary);
            font-size: 0.92rem;
            letter-spacing: 2px;
            animation: blink 1s infinite;
        }

        .loader-sub {
            font-size: 0.86rem;
            color: var(--text-muted);
            font-family: var(--font-code);
        }

        .loader-hidden {
            opacity: 0;
            visibility: hidden;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        @keyframes blink {
            50% {
                opacity: 0.45;
            }
        }

        /* =========================================================
           4. CANVAS + GRID BG + SCROLLBAR TOP
           ========================================================= */
        #spider-canvas {
            position: fixed;
            inset: 0;
            width: 100%;
            height: 100%;
            z-index: -3;
            pointer-events: none;
        }

        .bg-grid {
            position: fixed;
            inset: 0;
            z-index: -4;
            pointer-events: none;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
            background-size: 60px 60px;
            mask-image: radial-gradient(circle at center, rgba(255,255,255,1), transparent 85%);
            opacity: 0.32;
        }

        .progress-top {
            position: fixed;
            inset: 0 auto auto 0;
            width: 0%;
            height: 3px;
            z-index: 9998;
            background: linear-gradient(90deg, var(--primary), #fff);
            box-shadow: 0 0 20px rgba(0, 242, 255, 0.45);
        }

        /* =========================================================
           5. NAVBAR
           ========================================================= */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 1200;
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            background: rgba(5, 5, 5, 0.6);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .nav-inner {
            min-height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 14px;
            min-width: 0;
        }

        .brand-mark {
            width: 50px;
            height: 50px;
            border-radius: 16px;
            position: relative;
            background:
                linear-gradient(135deg, rgba(0, 242, 255, 0.18), rgba(255, 255, 255, 0.04));
            border: 1px solid rgba(0, 242, 255, 0.2);
            display: grid;
            place-items: center;
            box-shadow: var(--shadow-neon);
        }

        .brand-mark::before {
            content: "H";
            font-weight: 900;
            color: var(--primary);
            font-size: 1.3rem;
            text-shadow: 0 0 18px rgba(0, 242, 255, 0.35);
        }

        .brand-text h2 {
            font-size: 1.15rem;
            line-height: 1;
            font-weight: 900;
            letter-spacing: 0.4px;
        }

        .brand-text p {
            font-family: var(--font-code);
            font-size: 0.74rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 22px;
        }

        .nav-links a {
            position: relative;
            color: var(--text-soft);
            font-size: 0.96rem;
            transition: var(--transition);
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0%;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .menu-toggle {
            display: none;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.04);
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            cursor: pointer;
        }

        /* =========================================================
           6. HERO
           ========================================================= */
        .hero {
            position: relative;
            padding: 84px 0 100px;
            overflow: hidden;
        }

        .hero-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr;
            gap: 36px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(0, 242, 255, 0.06);
            border: 1px solid rgba(0, 242, 255, 0.18);
            padding: 12px 18px;
            border-radius: 999px;
            font-family: var(--font-code);
            font-size: 0.85rem;
            color: var(--primary);
            margin-bottom: 26px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 10px var(--success);
        }

        .hero-title {
            font-size: clamp(2.8rem, 7vw, 6rem);
            line-height: 0.95;
            font-weight: 900;
            letter-spacing: -3px;
            margin-bottom: 24px;
            text-transform: uppercase;
            text-shadow: 0 0 35px rgba(0, 242, 255, 0.12);
        }

        .hero-title .block {
            display: block;
        }

        .hero-desc {
            max-width: 700px;
            color: var(--text-muted);
            line-height: 1.9;
            font-size: 1.05rem;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }

        .hero-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .metric-mini {
            min-width: 160px;
            padding: 16px 18px;
            border-radius: 18px;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(12px);
        }

        .metric-mini strong {
            display: block;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 8px;
        }

        .metric-mini span {
            font-size: 0.86rem;
            color: var(--text-muted);
        }

        .hero-visual {
            position: relative;
        }

        .hero-panel {
            padding: 24px;
            border-radius: 28px;
            background:
                linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
            border: 1px solid rgba(255,255,255,0.08);
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .hero-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at top right, rgba(0,242,255,0.12), transparent 30%);
            pointer-events: none;
        }

        .panel-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 22px;
        }

        .panel-label {
            font-family: var(--font-code);
            color: var(--text-muted);
            font-size: 0.82rem;
        }

        .panel-status {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 999px;
            padding: 8px 12px;
            border: 1px solid rgba(0, 255, 136, 0.2);
            color: var(--success);
            background: rgba(0, 255, 136, 0.08);
            font-family: var(--font-code);
            font-size: 0.76rem;
        }

        .panel-card {
            padding: 18px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: rgba(255, 255, 255, 0.03);
            margin-bottom: 16px;
            position: relative;
            overflow: hidden;
        }

        .panel-card:last-child {
            margin-bottom: 0;
        }

        .panel-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .panel-card p {
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.94rem;
        }

        .panel-card .line {
            position: absolute;
            inset: auto 0 0 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), transparent);
            opacity: 0.7;
        }

        .floating-chip {
            position: absolute;
            border-radius: 16px;
            border: 1px solid var(--border);
            background: rgba(13, 13, 13, 0.9);
            padding: 14px 16px;
            box-shadow: var(--shadow-sm);
            backdrop-filter: blur(12px);
        }

        .chip-a {
            top: -18px;
            right: -18px;
            transform: rotate(6deg);
        }

        .chip-b {
            bottom: 24px;
            left: -20px;
            transform: rotate(-6deg);
        }

        .floating-chip small {
            display: block;
            color: var(--text-muted);
            font-size: 0.74rem;
            margin-bottom: 6px;
            font-family: var(--font-code);
        }

        .floating-chip strong {
            font-size: 1.02rem;
        }

        /* =========================================================
           7. TRUST BAR / HQMT NOTICE
           ========================================================= */
        .trust-bar {
            padding: 16px 0;
            border-top: 1px solid rgba(255,255,255,0.05);
            border-bottom: 1px solid rgba(255,255,255,0.05);
            background: rgba(255, 255, 255, 0.02);
            overflow: hidden;
        }

        .marquee {
            display: flex;
            gap: 32px;
            white-space: nowrap;
            animation: marquee 26s linear infinite;
            font-family: var(--font-code);
            color: var(--text-muted);
            font-size: 0.86rem;
        }

        .marquee span {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .marquee i {
            color: var(--primary);
        }

        @keyframes marquee {
            0% { transform: translateX(0%); }
            100% { transform: translateX(-50%); }
        }

        /* =========================================================
           8. STATS
           ========================================================= */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin-top: 42px;
        }

        .stat-card {
            padding: 28px 24px;
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0,242,255,0.08), transparent 50%);
            opacity: 0;
            transition: var(--transition);
        }

        .stat-card:hover::before {
            opacity: 1;
        }

        .stat-icon {
            width: 56px;
            height: 56px;
            display: grid;
            place-items: center;
            border-radius: 16px;
            margin-bottom: 18px;
            background: rgba(0, 242, 255, 0.08);
            border: 1px solid rgba(0, 242, 255, 0.18);
            color: var(--primary);
            font-size: 1.4rem;
            box-shadow: var(--shadow-neon);
        }

        .stat-number {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 900;
            line-height: 1;
            margin-bottom: 12px;
        }

        .stat-label {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .stat-desc {
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.94rem;
        }

        /* =========================================================
           9. ABOUT / STORY
           ========================================================= */
        .about-wrap {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 30px;
            margin-top: 42px;
        }

        .about-card {
            padding: 30px;
            height: 100%;
        }

        .about-card h3 {
            font-size: 1.45rem;
            margin-bottom: 14px;
        }

        .about-card p {
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 18px;
        }

        .about-list {
            display: grid;
            gap: 14px;
            margin-top: 20px;
        }

        .about-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 16px;
            border-radius: 16px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.02);
        }

        .about-item i {
            font-size: 1.3rem;
            color: var(--primary);
            margin-top: 2px;
        }

        .about-item strong {
            display: block;
            margin-bottom: 8px;
            font-size: 1rem;
        }

        .about-item span {
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.94rem;
        }

        .terminal-box {
            height: 100%;
            padding: 0;
            overflow: hidden;
        }

        .terminal-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 18px;
            border-bottom: 1px solid var(--border);
            background: rgba(255,255,255,0.02);
        }

        .terminal-dots {
            display: flex;
            gap: 8px;
        }

        .terminal-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            display: inline-block;
        }

        .terminal-dots span:nth-child(1) { background: #ff5f56; }
        .terminal-dots span:nth-child(2) { background: #ffbd2e; }
        .terminal-dots span:nth-child(3) { background: #27c93f; }

        .terminal-title {
            color: var(--text-muted);
            font-family: var(--font-code);
            font-size: 0.8rem;
        }

        .terminal-body {
            padding: 24px;
            font-family: var(--font-code);
            font-size: 0.92rem;
            line-height: 1.9;
            color: var(--text-soft);
        }

        .terminal-row {
            margin-bottom: 12px;
        }

        .terminal-row .cmd {
            color: var(--primary);
        }

        .terminal-row .out {
            color: var(--text-muted);
            padding-left: 18px;
            display: block;
        }

        /* =========================================================
           10. ECOSYSTEM / SERVICES
           ========================================================= */
        .ecosystem-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 42px;
        }

        .eco-card {
            padding: 28px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .eco-card:hover {
            transform: translateY(-8px);
            border-color: rgba(0,242,255,0.24);
            box-shadow: var(--shadow-neon);
        }

        .eco-card .eco-icon {
            width: 60px;
            height: 60px;
            border-radius: 18px;
            display: grid;
            place-items: center;
            background: rgba(0,242,255,0.08);
            border: 1px solid rgba(0,242,255,0.18);
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 18px;
        }

        .eco-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .eco-card p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 18px;
            min-height: 88px;
        }

        .eco-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        /* =========================================================
           11. FEATURED SHOWCASE
           ========================================================= */
        .showcase {
            display: grid;
            grid-template-columns: 1.12fr 0.88fr;
            gap: 24px;
            margin-top: 42px;
        }

        .showcase-main,
        .showcase-side {
            padding: 28px;
        }

        .showcase-main {
            min-height: 420px;
            position: relative;
            overflow: hidden;
            background:
                linear-gradient(180deg, rgba(0,242,255,0.06), rgba(255,255,255,0.02)),
                var(--bg-card);
        }

        .showcase-main::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(135deg, transparent 0 40%, rgba(0,242,255,0.05) 40% 60%, transparent 60% 100%);
            opacity: 0.6;
            pointer-events: none;
        }

        .showcase-main .badge-top {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,0.1);
            background: rgba(255,255,255,0.05);
            font-family: var(--font-code);
            font-size: 0.8rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .showcase-main h3 {
            font-size: clamp(1.8rem, 4vw, 3rem);
            line-height: 1.1;
            margin-bottom: 16px;
        }

        .showcase-main p {
            color: var(--text-muted);
            line-height: 1.85;
            max-width: 620px;
            margin-bottom: 26px;
        }

        .showcase-points {
            display: grid;
            gap: 14px;
            margin-bottom: 26px;
        }

        .showcase-points li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-soft);
        }

        .showcase-points i {
            color: var(--success);
            font-size: 1.15rem;
            margin-top: 2px;
        }

        .showcase-side {
            display: grid;
            gap: 18px;
        }

        .mini-panel {
            padding: 20px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.03);
        }

        .mini-panel h4 {
            margin-bottom: 10px;
            font-size: 1.02rem;
        }

        .mini-panel p {
            color: var(--text-muted);
            line-height: 1.75;
            font-size: 0.94rem;
        }

        /* =========================================================
           12. EVENTS FILTER + EVENTS GRID (GỐC NÂNG CẤP)
           ========================================================= */
        .toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            margin-top: 36px;
            margin-bottom: 28px;
        }

        .filter-tabs {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 11px 16px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.03);
            color: var(--text-soft);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }

        .filter-btn:hover,
        .filter-btn.active {
            color: #000;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 0 20px rgba(0,242,255,0.24);
        }

        .toolbar-search {
            min-width: 260px;
            flex: 1;
            max-width: 420px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: 16px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.03);
        }

        .toolbar-search i {
            color: var(--primary);
            font-size: 1.1rem;
        }

        .toolbar-search input {
            width: 100%;
            background: transparent;
            color: #fff;
        }

        .toolbar-search input::placeholder {
            color: var(--text-dim);
        }

        .events-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }

        .event-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 24px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            backdrop-filter: blur(var(--glass));
            position: relative;
            box-shadow: var(--shadow-sm);
        }

        .event-card::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0,242,255,0.08), transparent 35%);
            opacity: 0;
            transition: var(--transition);
            pointer-events: none;
        }

        .event-card:hover {
            transform: translateY(-10px);
            border-color: rgba(0, 242, 255, 0.28);
            box-shadow: 0 22px 60px rgba(0, 242, 255, 0.12);
        }

        .event-card:hover::before {
            opacity: 1;
        }

        .card-img-wrapper {
            position: relative;
            width: 100%;
            height: 220px;
            overflow: hidden;
        }

        .card-img {
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            transition: transform 0.75s ease;
        }

        .event-card:hover .card-img {
            transform: scale(1.1);
        }

        .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0,0,0,0.02), rgba(0,0,0,0.55));
        }

        .event-badges {
            position: absolute;
            top: 16px;
            left: 16px;
            right: 16px;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 12px;
        }

        .event-type,
        .event-status {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 999px;
            font-size: 0.76rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.6px;
            backdrop-filter: blur(10px);
        }

        .event-type {
            background: rgba(0, 242, 255, 0.14);
            color: #fff;
            border: 1px solid rgba(0, 242, 255, 0.22);
        }

        .event-status {
            background: rgba(0, 255, 136, 0.12);
            color: var(--success);
            border: 1px solid rgba(0, 255, 136, 0.2);
        }

        .card-body {
            padding: 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
            position: relative;
        }

        .meta-info {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            font-size: 0.84rem;
            color: var(--primary);
            margin-bottom: 12px;
            font-family: var(--font-code);
        }

        .card-title {
            font-size: 1.35rem;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 0.9rem;
            color: #fff;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 3.7rem;
        }

        .card-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 5rem;
        }

        .event-meta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-bottom: 18px;
        }

        .event-meta-box {
            padding: 12px;
            border-radius: 14px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.03);
        }

        .event-meta-box small {
            display: block;
            color: var(--text-muted);
            margin-bottom: 8px;
            font-size: 0.78rem;
        }

        .event-meta-box strong {
            font-size: 0.95rem;
            color: #fff;
        }

        .btn-row {
            display: flex;
            gap: 10px;
            margin-top: auto;
        }

        .btn-join {
            flex: 1;
            display: inline-flex;
            justify-content: center;
            align-items: center;
            padding: 15px;
            background: var(--primary);
            color: #000;
            font-weight: 900;
            text-transform: uppercase;
            font-size: 0.86rem;
            letter-spacing: 1.3px;
            border-radius: 14px;
            transition: var(--transition);
            box-shadow: 0 0 18px rgba(0, 242, 255, 0.2);
        }

        .btn-join:hover {
            background: #fff;
            box-shadow: 0 0 30px rgba(0, 242, 255, 0.55);
            transform: translateY(-3px);
        }

        .btn-preview {
            width: 54px;
            border-radius: 14px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.03);
            display: grid;
            place-items: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-preview:hover {
            color: var(--primary);
            border-color: rgba(0,242,255,0.24);
            box-shadow: var(--shadow-neon);
        }

        .empty-state {
            display: none;
            text-align: center;
            padding: 34px;
            border-radius: 24px;
            border: 1px dashed rgba(255,255,255,0.14);
            background: rgba(255,255,255,0.02);
            color: var(--text-muted);
            grid-column: 1/-1;
        }

        .empty-state.show {
            display: block;
        }

        /* =========================================================
           13. TIMELINE
           ========================================================= */
        .timeline {
            position: relative;
            margin-top: 42px;
            padding-left: 26px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), rgba(255,255,255,0.08));
        }

        .timeline-item {
            position: relative;
            padding: 0 0 28px 28px;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -1px;
            top: 8px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bg-dark);
            border: 3px solid var(--primary);
            box-shadow: 0 0 16px rgba(0,242,255,0.35);
        }

        .timeline-card {
            padding: 22px;
        }

        .timeline-meta {
            font-family: var(--font-code);
            color: var(--primary);
            font-size: 0.82rem;
            margin-bottom: 10px;
        }

        .timeline-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .timeline-card p {
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* =========================================================
           14. GALLERY
           ========================================================= */
        .gallery-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            grid-auto-rows: 220px;
            gap: 18px;
            margin-top: 42px;
        }

        .gallery-item {
            position: relative;
            overflow: hidden;
            border-radius: 24px;
            border: 1px solid var(--border);
            background: #111;
            cursor: pointer;
        }

        .gallery-item.large {
            grid-row: span 2;
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.8s ease;
            opacity: 0.88;
        }

        .gallery-item:hover img {
            transform: scale(1.1);
            opacity: 1;
        }

        .gallery-overlay {
            position: absolute;
            inset: 0;
            background:
                linear-gradient(180deg, rgba(0,0,0,0.12), rgba(0,0,0,0.7));
            display: flex;
            align-items: flex-end;
            padding: 20px;
        }

        .gallery-overlay h4 {
            font-size: 1rem;
            line-height: 1.4;
        }

        /* =========================================================
           15. ROADMAP
           ========================================================= */
        .roadmap-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin-top: 42px;
        }

        .roadmap-card {
            padding: 24px;
            position: relative;
        }

        .roadmap-step {
            display: inline-flex;
            width: 42px;
            height: 42px;
            border-radius: 14px;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            background: rgba(0,242,255,0.08);
            color: var(--primary);
            border: 1px solid rgba(0,242,255,0.2);
            margin-bottom: 18px;
        }

        .roadmap-card h3 {
            margin-bottom: 12px;
            font-size: 1.1rem;
        }

        .roadmap-card p {
            color: var(--text-muted);
            line-height: 1.78;
            font-size: 0.94rem;
        }

        /* =========================================================
           16. TESTIMONIALS
           ========================================================= */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 42px;
        }

        .testimonial-card {
            padding: 26px;
            position: relative;
            overflow: hidden;
        }

        .testimonial-card::before {
            content: "\201C";
            position: absolute;
            right: 20px;
            top: 8px;
            font-size: 4rem;
            line-height: 1;
            color: rgba(0,242,255,0.12);
            font-weight: 900;
        }

        .testimonial-card p {
            color: var(--text-muted);
            line-height: 1.9;
            margin-bottom: 22px;
        }

        .author {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .author-avatar {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            font-weight: 900;
            color: #000;
            background: var(--primary);
        }

        .author strong {
            display: block;
            margin-bottom: 4px;
        }

        .author span {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* =========================================================
           17. FAQ
           ========================================================= */
        .faq-wrap {
            display: grid;
            gap: 16px;
            margin-top: 42px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 20px;
            background: rgba(255,255,255,0.03);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 22px;
            cursor: pointer;
            font-weight: 700;
            text-align: left;
        }

        .faq-question i {
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 22px;
        }

        .faq-answer p {
            color: var(--text-muted);
            line-height: 1.85;
            padding-bottom: 22px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
        }

        /* =========================================================
           18. CTA
           ========================================================= */
        .cta-box {
            position: relative;
            padding: 42px;
            border-radius: 30px;
            overflow: hidden;
            border: 1px solid rgba(0,242,255,0.18);
            background:
                radial-gradient(circle at top right, rgba(0,242,255,0.1), transparent 35%),
                linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
            box-shadow: var(--shadow-neon);
        }

        .cta-box h2 {
            font-size: clamp(2rem, 4vw, 3.2rem);
            line-height: 1.1;
            margin-bottom: 14px;
        }

        .cta-box p {
            max-width: 820px;
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* =========================================================
           19. FOOTER
           ========================================================= */
        .site-footer {
            background: #090909;
            padding-top: 80px;
            border-top: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: -1px;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.1fr;
            gap: 28px;
            margin-bottom: 40px;
        }

        .footer-brand h2 {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 16px;
        }

        .footer-brand h2 span {
            color: var(--primary);
        }

        .footer-desc {
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 20px;
            font-size: 0.96rem;
            max-width: 420px;
        }

        .footer-note {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 0.82rem;
            color: var(--success);
            border: 1px solid rgba(0,255,136,0.22);
            background: rgba(0,255,136,0.06);
            padding: 10px 14px;
            border-radius: 999px;
            font-family: var(--font-code);
        }

        .social-links {
            display: flex;
            gap: 12px;
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .social-icon {
            width: 48px;
            height: 48px;
            border-radius: 16px;
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border);
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--text-muted);
            font-size: 1.3rem;
            transition: var(--transition);
        }

        .social-icon:hover {
            background: var(--primary);
            color: #000;
            border-color: var(--primary);
            transform: translateY(-5px);
            box-shadow: 0 0 24px rgba(0,242,255,0.36);
        }

        .footer-heading {
            font-size: 1rem;
            font-weight: 800;
            text-transform: uppercase;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: var(--transition);
            display: inline-block;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(8px);
        }

        .contact-info p {
            color: var(--text-muted);
            margin-bottom: 14px;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            line-height: 1.7;
        }

        .contact-info i {
            color: var(--primary);
            margin-right: 10px;
            font-size: 1.2rem;
        }

        .dmca-box {
            margin-top: 18px;
        }

        .dmca-box img {
            opacity: 0.86;
            transition: var(--transition);
        }

        .dmca-box img:hover {
            opacity: 1;
        }

        .copyright-bar {
            border-top: 1px solid var(--border);
            padding: 22px 0;
            font-size: 0.92rem;
            color: var(--text-muted);
            background: rgba(0,0,0,0.3);
        }

        .copyright-wrap {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .sys-status {
            font-family: var(--font-code);
            font-size: 0.8rem;
            color: var(--success);
            border: 1px solid rgba(0, 255, 136, 0.3);
            padding: 8px 14px;
            border-radius: 999px;
            background: rgba(0, 255, 136, 0.05);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            box-shadow: 0 0 12px var(--success);
        }

        /* =========================================================
           20. MODAL
           ========================================================= */
        .modal {
            position: fixed;
            inset: 0;
            z-index: 4000;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(12px);
        }

        .modal.show {
            display: flex;
        }

        .modal-card {
            width: min(920px, 100%);
            border-radius: 28px;
            overflow: hidden;
            border: 1px solid var(--border);
            background: #0d0d0d;
            box-shadow: 0 30px 80px rgba(0,0,0,0.55);
            animation: modalUp 0.35s ease;
        }

        @keyframes modalUp {
            from {
                opacity: 0;
                transform: translateY(18px) scale(0.98);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        .modal-cover {
            height: 280px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .modal-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0,0,0,0.1), rgba(0,0,0,0.75));
        }

        .modal-close {
            position: absolute;
            top: 18px;
            right: 18px;
            width: 48px;
            height: 48px;
            border-radius: 16px;
            border: 1px solid rgba(255,255,255,0.12);
            background: rgba(0,0,0,0.36);
            color: #fff;
            display: grid;
            place-items: center;
            font-size: 1.4rem;
            cursor: pointer;
            z-index: 2;
            transition: var(--transition);
        }

        .modal-close:hover {
            color: var(--primary);
            border-color: rgba(0,242,255,0.22);
        }

        .modal-body {
            padding: 28px;
        }

        .modal-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 12px;
        }

        .modal-body h3 {
            font-size: 2rem;
            margin-bottom: 14px;
        }

        .modal-body p {
            color: var(--text-muted);
            line-height: 1.9;
            margin-bottom: 18px;
        }

        .modal-details {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            margin-bottom: 22px;
        }

        .modal-detail-box {
            padding: 16px;
            border-radius: 16px;
            border: 1px solid var(--border);
            background: rgba(255,255,255,0.03);
        }

        .modal-detail-box small {
            display: block;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .modal-detail-box strong {
            display: block;
            font-size: 1rem;
        }

        /* =========================================================
           21. BACK TO TOP
           ========================================================= */
        .back-top {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 2000;
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: rgba(12,12,12,0.9);
            border: 1px solid var(--border);
            display: grid;
            place-items: center;
            color: var(--primary);
            font-size: 1.35rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .back-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--primary);
            color: #000;
            box-shadow: 0 0 30px rgba(0,242,255,0.35);
        }

        /* =========================================================
           22. RESPONSIVE
           ========================================================= */
        @media (max-width: 1200px) {
            .hero-wrap,
            .about-wrap,
            .showcase {
                grid-template-columns: 1fr;
            }

            .stats-grid,
            .roadmap-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .ecosystem-grid,
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 920px) {
            .nav-links,
            .nav-actions .desktop-only {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .gallery-grid {
                grid-template-columns: 1fr 1fr;
                grid-auto-rows: 200px;
            }

            .gallery-item.large {
                grid-row: span 1;
                grid-column: span 2;
            }

            .modal-details {
                grid-template-columns: 1fr;
            }
        }

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

            .hero {
                padding: 54px 0 78px;
            }

            .hero-title {
                letter-spacing: -1.5px;
            }

            .stats-grid,
            .ecosystem-grid,
            .testimonials-grid,
            .roadmap-grid,
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }

            .events-grid {
                grid-template-columns: 1fr;
            }

            .event-meta-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .copyright-wrap {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-box {
                padding: 28px;
            }

            .toolbar {
                align-items: stretch;
            }

            .toolbar-search {
                max-width: 100%;
            }

            .gallery-grid {
                grid-template-columns: 1fr;
            }

            .gallery-item.large {
                grid-column: span 1;
            }
        }

        @media (max-width: 560px) {
            .container {
                padding: 0 16px;
            }

            .hero-actions,
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn,
            .btn-primary,
            .btn-outline {
                width: 100%;
            }

            .hero-metrics {
                flex-direction: column;
            }

            .modal-body h3 {
                font-size: 1.5rem;
            }
        }