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

        :root {
            --bg: #ffffff;
            --bg-soft: #fafafa;
            --bg-muted: #f4f4f5;
            --text-primary: #18181b;
            --text-secondary: #52525b;
            --text-tertiary: #a1a1aa;
            --border: #e4e4e7;
            --border-light: #f0f0f3;
            --accent: #6366f1;
            --accent-hover: #4f46e5;
            --accent-light: #eef2ff;
            --green: #10b981;
            --amber: #f59e0b;
            --rose: #f43f5e;
            --nav-bg: rgba(255,255,255,0.72);
            --footer-bg: #18181b;
            --glow-opacity: 0.06;
            --product-v1: linear-gradient(135deg, #eef2ff 0%, #faf5ff 100%);
            --product-v2: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
            --product-v3: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
        }

        [data-theme="dark"] {
            --bg: #09090b;
            --bg-soft: #111113;
            --bg-muted: #1a1a1e;
            --text-primary: #fafafa;
            --text-secondary: #a1a1aa;
            --text-tertiary: #71717a;
            --border: #27272a;
            --border-light: #1e1e22;
            --accent: #818cf8;
            --accent-hover: #6366f1;
            --accent-light: rgba(99,102,241,0.12);
            --green: #34d399;
            --amber: #fbbf24;
            --rose: #fb7185;
            --nav-bg: rgba(9,9,11,0.78);
            --footer-bg: #0c0c0e;
            --glow-opacity: 0.1;
            --product-v1: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(168,85,247,0.06) 100%);
            --product-v2: linear-gradient(135deg, rgba(245,158,11,0.08) 0%, rgba(251,191,36,0.06) 100%);
            --product-v3: linear-gradient(135deg, rgba(16,185,129,0.08) 0%, rgba(52,211,153,0.06) 100%);
        }

        html { scroll-behavior: smooth; }

        body {
            font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text-primary);
            background: var(--bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
            transition: background 0.4s, color 0.4s;
        }

        /* ===== READING PROGRESS ===== */
        #progressBar {
            position: fixed;
            top: 0;
            left: 0;
            height: 2px;
            background: var(--accent);
            z-index: 1100;
            width: 0%;
            transition: width 0.05s linear;
        }

        /* ===== MOUSE GLOW ===== */
        #mouseGlow {
            position: fixed;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
            opacity: var(--glow-opacity);
            pointer-events: none;
            z-index: 0;
            transform: translate(-50%, -50%);
            transition: opacity 0.3s;
        }

        /* ===== NAVIGATION ===== */
        nav {
            position: fixed;
            top: 0; left: 0; right: 0;
            height: 60px;
            background: var(--nav-bg);
            backdrop-filter: saturate(180%) blur(20px);
            -webkit-backdrop-filter: saturate(180%) blur(20px);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.4s, border-color 0.4s;
        }

        .nav-inner {
            width: 100%;
            max-width: 1200px;
            padding: 0 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-brand {
            font-size: 17px;
            font-weight: 700;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
        }

        .nav-brand .brand-dot {
            width: 8px; height: 8px;
            background: var(--accent);
            border-radius: 50%;
        }

        .nav-logo {
            height: 32px;
            width: auto;
            display: block;
        }

        .nav-links {
            display: flex;
            gap: 32px;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-secondary);
            font-size: 13.5px;
            font-weight: 500;
            transition: color 0.2s;
            letter-spacing: 0.01em;
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-action-btn {
            background: none;
            border: none;
            width: 34px; height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: color 0.2s, background 0.2s;
            border-radius: 6px;
        }

        .nav-action-btn:hover {
            color: var(--text-primary);
            background: var(--bg-muted);
        }

        .lang-btn {
            font-size: 12px;
            font-weight: 600;
            width: auto;
            padding: 0 10px;
            font-family: inherit;
            letter-spacing: 0.02em;
        }

        .nav-mobile-toggle { display: none; }

        /* ===== HERO ===== */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            background: linear-gradient(160deg, var(--bg-soft) 0%, var(--bg) 40%, var(--bg-soft) 100%);
            transition: background 0.4s;
        }

        .hero-bg-orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(100px);
            pointer-events: none;
        }

        .hero-bg-orb.orb-1 {
            width: 600px; height: 600px;
            background: rgba(99,102,241,0.07);
            top: -15%; right: -5%;
            animation: orbFloat 20s ease-in-out infinite;
        }

        .hero-bg-orb.orb-2 {
            width: 500px; height: 500px;
            background: rgba(244,63,94,0.05);
            bottom: -10%; left: -5%;
            animation: orbFloat 25s ease-in-out infinite reverse;
        }

        .hero-bg-orb.orb-3 {
            width: 350px; height: 350px;
            background: rgba(16,185,129,0.05);
            top: 40%; left: 30%;
            animation: orbFloat 18s ease-in-out infinite 5s;
        }

        @keyframes orbFloat {
            0%, 100% { transform: translate(0,0) scale(1); }
            33% { transform: translate(30px,-20px) scale(1.05); }
            66% { transform: translate(-20px,15px) scale(0.95); }
        }

        .hero-content {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12.5px;
            font-weight: 600;
            margin-bottom: 36px;
            letter-spacing: 0.04em;
            transition: background 0.4s, color 0.4s;
        }

        .hero h1 {
            font-size: clamp(44px, 7vw, 80px);
            font-weight: 800;
            line-height: 1.08;
            letter-spacing: -0.04em;
            margin-bottom: 28px;
        }

        .hero h1 .text-gradient {
            background: linear-gradient(135deg, var(--accent) 0%, #a855f7 50%, var(--rose) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 48px;
            font-weight: 300;
            line-height: 1.8;
        }

        .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            background: var(--text-primary);
            color: var(--bg);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s;
        }

        .hero-cta:hover {
            opacity: 0.85;
            transform: translateY(-1px);
        }

        .hero-scroll-hint {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-tertiary);
            font-size: 11px;
            letter-spacing: 0.1em;
            animation: scrollBounce 2s ease-in-out infinite;
        }

        @keyframes scrollBounce {
            0%, 100% { transform: translateX(-50%) translateY(0); }
            50% { transform: translateX(-50%) translateY(6px); }
        }

        /* ===== SECTIONS COMMON ===== */
        .section {
            padding: 140px 48px;
            position: relative;
        }

        .section-inner {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-label {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.14em;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            letter-spacing: -0.03em;
            line-height: 1.2;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.8;
            font-weight: 300;
        }

        /* ===== ABOUT ===== */
        .about { background: var(--bg); }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
            margin-top: 72px;
        }

        .about-text {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 2;
            font-weight: 300;
        }

        .about-text p + p { margin-top: 20px; }

        .about-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1px;
            background: var(--border-light);
            border: 1px solid var(--border-light);
            transition: background 0.4s, border-color 0.4s;
        }

        .stat-item {
            background: var(--bg);
            padding: 40px 32px;
            transition: background 0.4s;
        }

        .stat-number {
            font-size: 40px;
            font-weight: 700;
            letter-spacing: -0.03em;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1;
        }

        .stat-suffix {
            font-size: 22px;
            font-weight: 500;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-tertiary);
            font-weight: 400;
        }

        /* ===== PRODUCTS ===== */
        .products { background: var(--bg-soft); transition: background 0.4s; }

        .product-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
            padding: 72px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .product-item:last-child { border-bottom: none; }
        .product-item.reverse { direction: rtl; }
        .product-item.reverse > * { direction: ltr; }

        .product-icon-wrap {
            width: 56px; height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 28px;
            position: relative;
        }

        .product-icon-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--accent-light);
            transition: background 0.4s;
        }

        .product-icon-wrap i {
            position: relative;
            z-index: 1;
            color: var(--accent);
        }

        .product-item:nth-child(2) .product-icon-wrap::after { background: #fef3c7; }
        .product-item:nth-child(2) .product-icon-wrap i { color: var(--amber); }
        .product-item:nth-child(3) .product-icon-wrap::after { background: #ecfdf5; }
        .product-item:nth-child(3) .product-icon-wrap i { color: var(--green); }

        [data-theme="dark"] .product-item:nth-child(2) .product-icon-wrap::after { background: rgba(245,158,11,0.12); }
        [data-theme="dark"] .product-item:nth-child(3) .product-icon-wrap::after { background: rgba(16,185,129,0.12); }

        .product-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-tertiary);
            margin-bottom: 14px;
        }

        .product-name {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .product-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 36px;
            font-weight: 300;
        }

        .product-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .product-features li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .product-features li i {
            color: var(--green);
            font-size: 15px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .product-visual {
            aspect-ratio: 4/3;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: border-color 0.4s;
        }

        .product-visual-content {
            text-align: center;
            padding: 40px;
        }

        .product-visual-icon { font-size: 56px; margin-bottom: 20px; display: block; }
        .product-visual-title { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 8px; }
        .product-visual-sub { font-size: 13px; color: var(--text-tertiary); font-weight: 300; }

        .product-visual {
            aspect-ratio: auto;
            background: var(--bg-muted);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: border-color 0.4s, background 0.4s;
        }

        .product-visual-wide {
            aspect-ratio: 16/10;
        }

        .product-screenshot {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s cubic-bezier(0.16,1,0.3,1);
        }

        .product-visual:hover .product-screenshot {
            transform: scale(1.02);
        }

        /* ===== TIMELINE ===== */
        .timeline-section { background: var(--bg); }

        .timeline {
            margin-top: 72px;
            position: relative;
            padding-left: 40px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 7px;
            top: 8px;
            bottom: 8px;
            width: 1px;
            background: var(--border);
            transition: background 0.4s;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 48px;
        }

        .timeline-item:last-child { padding-bottom: 0; }

        .timeline-dot {
            position: absolute;
            left: -40px;
            top: 4px;
            width: 15px;
            height: 15px;
            border: 2px solid var(--accent);
            background: var(--bg);
            border-radius: 50%;
            transition: background 0.4s, border-color 0.4s;
        }

        .timeline-item:first-child .timeline-dot {
            background: var(--accent);
        }

        .timeline-date {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }

        .timeline-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .timeline-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            font-weight: 300;
            max-width: 520px;
        }

        /* ===== CULTURE ===== */
        .culture { background: var(--bg-soft); transition: background 0.4s; }

        .culture-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            background: var(--border-light);
            border: 1px solid var(--border-light);
            margin-top: 72px;
            transition: background 0.4s, border-color 0.4s;
        }

        .culture-item {
            background: var(--bg);
            padding: 48px 32px;
            transition: background 0.4s;
        }

        .culture-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 24px;
            display: block;
        }

        .culture-name {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .culture-desc {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.75;
            font-weight: 300;
        }

        /* ===== TEAM ===== */
        .team { background: var(--bg); }

        .team-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1px;
            background: var(--border-light);
            border: 1px solid var(--border-light);
            margin-top: 72px;
            transition: background 0.4s, border-color 0.4s;
        }

        .team-member {
            background: var(--bg);
            padding: 48px 28px;
            text-align: center;
            transition: background 0.2s;
        }

        .team-member:hover { background: var(--bg-soft); }

        .member-avatar {
            width: 100%;
            max-width: 160px;
            aspect-ratio: 1;
            margin: 0 auto 24px;
            background: var(--bg-muted);
            border: 1px dashed var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            transition: background 0.4s, border-color 0.4s;
        }

        .member-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .member-avatar .avatar-placeholder {
            font-size: 36px;
            color: var(--text-tertiary);
        }

        .member-name { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
        .member-role { font-size: 12px; color: var(--text-tertiary); margin-bottom: 18px; font-weight: 500; }
        .member-bio { font-size: 13px; color: var(--text-secondary); line-height: 1.7; font-weight: 300; }

        /* ===== JOIN US ===== */
        .join { background: var(--bg-soft); transition: background 0.4s; }

        .join-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1px;
            background: var(--border-light);
            border: 1px solid var(--border-light);
            margin-top: 72px;
            transition: background 0.4s, border-color 0.4s;
        }

        .join-card {
            background: var(--bg);
            padding: 44px 32px;
            transition: background 0.2s;
        }

        .join-card:hover { background: var(--bg-soft); }

        .join-type {
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .join-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .join-desc {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.75;
            font-weight: 300;
            margin-bottom: 24px;
        }

        .join-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .join-tag {
            font-size: 11.5px;
            font-weight: 500;
            padding: 4px 12px;
            background: var(--bg-muted);
            color: var(--text-secondary);
            transition: background 0.4s, color 0.4s;
        }

        .join-email {
            margin-top: 56px;
            text-align: center;
        }

        .join-email p {
            font-size: 14px;
            color: var(--text-tertiary);
            margin-bottom: 12px;
            font-weight: 300;
        }

        .join-email a {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent);
            text-decoration: none;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s;
        }

        .join-email a:hover { border-bottom-color: var(--accent); }

        /* ===== FOOTER ===== */
        footer {
            background: var(--bg);
            color: var(--text-secondary);
            padding: 72px 48px 40px;
            border-top: 1px solid var(--border-light);
            transition: background 0.4s, border-color 0.4s;
        }

        .footer-inner { max-width: 1200px; margin: 0 auto; }

        .footer-columns {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.4fr;
            gap: 64px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--border-light);
        }

        .footer-col-brand .footer-logo {
            margin-bottom: 16px;
        }

        .footer-tagline {
            font-size: 13px;
            color: var(--text-tertiary);
            font-weight: 300;
            margin-bottom: 16px;
        }

        .footer-about {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.75;
            font-weight: 300;
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .footer-nav {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 13.5px;
            font-weight: 300;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 28px;
        }

        .footer-copyright, .footer-icp {
            font-size: 12px;
            color: var(--text-tertiary);
            font-weight: 300;
        }

        .footer-back-top {
            width: 36px; height: 36px;
            background: var(--bg-muted);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.2s;
        }

        .footer-back-top:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        /* ===== ANIMATIONS ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(28px);
            transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1),
                        transform 0.7s cubic-bezier(0.16,1,0.3,1);
        }

        .fade-up.visible { opacity: 1; transform: translateY(0); }
        .fade-up-delay-1 { transition-delay: 0.1s; }
        .fade-up-delay-2 { transition-delay: 0.2s; }
        .fade-up-delay-3 { transition-delay: 0.3s; }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .section { padding: 100px 32px; }
            .about-grid { gap: 48px; }
            .product-item { gap: 48px; }
            .team-grid, .culture-grid { grid-template-columns: repeat(2, 1fr); }
            .join-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-inner { padding: 0 24px; }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px; left: 0; right: 0;
                background: rgba(255,255,255,0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 0;
                border-bottom: 1px solid var(--border-light);
            }
            [data-theme="dark"] .nav-links {
                background: rgba(9,9,11,0.97);
            }
            .nav-links.open { display: flex; }
            .nav-links li { padding: 12px 0; border-bottom: 1px solid var(--border-light); }
            .nav-links li:last-child { border-bottom: none; }
            .nav-mobile-toggle { display: block; }
            .section { padding: 80px 24px; }
            .hero h1 { font-size: 36px; }
            .about-grid { grid-template-columns: 1fr; gap: 48px; }
            .product-item, .product-item.reverse {
                grid-template-columns: 1fr;
                direction: ltr;
                gap: 40px;
                padding: 56px 0;
            }
            .product-visual { aspect-ratio: 9/16; max-width: 280px; margin: 0 auto; }
            .product-visual-wide { aspect-ratio: 16/10; max-width: 100%; }
            .team-grid, .culture-grid { grid-template-columns: 1fr 1fr; }
            .join-grid { grid-template-columns: 1fr; }
            .footer-columns { grid-template-columns: 1fr; gap: 36px; }
            .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
            .timeline { padding-left: 32px; }
            .timeline-dot { left: -32px; }
        }

        @media (max-width: 480px) {
            .team-grid, .culture-grid { grid-template-columns: 1fr; }
            .about-stats { grid-template-columns: 1fr; }
            .hero h1 { font-size: 30px; }
            .section-title { font-size: 26px; }
            .product-name { font-size: 24px; }
        }