:root {
            --bg-primary: #fafbfc;
            --bg-secondary: #f4f5f7;
            --bg-card: rgba(255, 255, 255, 0.7);
            --bg-card-solid: #ffffff;
            --text-primary: #1a1d26;
            --text-secondary: #5c6170;
            --text-muted: #949aa5;
            --accent: #4f46e5;
            --accent-light: #818cf8;
            --accent-soft: rgba(79, 70, 229, 0.08);
            --accent-glow: rgba(79, 70, 229, 0.15);
            --border-color: rgba(0, 0, 0, 0.06);
            --border-color-strong: rgba(0, 0, 0, 0.1);
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.02), 0 1px 4px rgba(0,0,0,0.02);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.04), 0 2px 4px rgba(0,0,0,0.02);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.06), 0 4px 8px rgba(0,0,0,0.02);
            --shadow-xl: 0 24px 48px rgba(0,0,0,0.08), 0 8px 16px rgba(0,0,0,0.02);
            --radius-sm: 12px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --nav-height: 72px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        [data-theme="dark"] {
            --bg-primary: #0c0a14;
            --bg-secondary: #12111a;
            --bg-card: rgba(30, 28, 44, 0.6);
            --bg-card-solid: #1e1c2e;
            --text-primary: #ededf4;
            --text-secondary: #a8a9b8;
            --text-muted: #6b6c7d;
            --accent: #818cf8;
            --accent-light: #a5b4fc;
            --accent-soft: rgba(129, 140, 248, 0.1);
            --accent-glow: rgba(129, 140, 248, 0.2);
            --border-color: rgba(255, 255, 255, 0.06);
            --border-color-strong: rgba(255, 255, 255, 0.1);
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.2), 0 1px 4px rgba(0,0,0,0.1);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.3), 0 2px 4px rgba(0,0,0,0.15);
            --shadow-lg: 0 12px 32px rgba(0,0,0,0.4), 0 4px 8px rgba(0,0,0,0.2);
            --shadow-xl: 0 24px 48px rgba(0,0,0,0.5), 0 8px 16px rgba(0,0,0,0.25);
        }

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

        html { scroll-behavior: smooth; }

        @media (prefers-reduced-motion: reduce) {
            html { scroll-behavior: auto; }
            *, *::before, *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }

        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            overflow-x: hidden;
            transition: background var(--transition), color var(--transition);
            padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
        }

        ::-webkit-scrollbar { width: 6px; height: 6px; }
        ::-webkit-scrollbar-track { background: transparent; }
        ::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--accent-light); }

        :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

        .skip-link {
            position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
            padding: 14px 28px; background: var(--accent); color: white;
            font-weight: 600; border-radius: var(--radius-md); z-index: 10000; transition: top 0.3s;
            text-decoration: none;
        }
        .skip-link:focus { top: 10px; }

        .bg-main {
            position: fixed; top: 0; left: 0; width: 100%; height: 100%;
            pointer-events: none; z-index: 0; overflow: hidden;
        }

        .bg-gradient {
            position: absolute; width: 100%; height: 100%;
            background:
                radial-gradient(ellipse 100% 60% at 50% -10%, var(--accent-glow), transparent 60%),
                radial-gradient(ellipse 80% 50% at 80% 100%, rgba(167, 139, 250, 0.08), transparent 50%),
                radial-gradient(ellipse 60% 40% at 10% 90%, rgba(79, 70, 229, 0.06), transparent 40%);
        }

        .bg-grid {
            position: absolute; width: 100%; height: 100%;
            background-image: radial-gradient(circle, var(--border-color) 1px, transparent 1px);
            background-size: 32px 32px;
            mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
            -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
        }

        .header-controls {
            position: fixed; top: auto; bottom: 170px; right: 32px; display: flex; flex-direction: column; align-items: center;
            gap: 12px; z-index: 1002;
        }

        .theme-toggle, .menu-toggle, .service-float, .back-to-top {
            width: 48px; height: 48px; border-radius: 50%;
            background: var(--bg-card); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-color); cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            font-size: 20px; transition: all var(--transition);
            box-shadow: var(--shadow-md);
        }

        .theme-toggle:hover, .menu-toggle:hover {
            background: var(--bg-card-solid);
            border-color: var(--border-color-strong);
            transform: scale(1.04);
            box-shadow: var(--shadow-md);
        }

        .menu-toggle { display: none; flex-direction: column; gap: 5px; }
        .menu-toggle span {
            width: 18px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

        nav {
            position: fixed; top: 0; left: 0; width: 100%; height: var(--nav-height);
            padding: 0 48px; display: flex; justify-content: space-between; align-items: center;
            background: var(--bg-card); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
            border-bottom: 1px solid var(--border-color); z-index: 1000;
            transition: all var(--transition);
        }

        nav.scrolled {
            box-shadow: var(--shadow-md);
            background: var(--bg-card-solid);
        }

        .logo {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif; font-size: 22px; font-weight: 700;
            color: var(--text-primary); letter-spacing: -0.3px; display: flex;
            align-items: center; gap: 12px; text-decoration: none;
        }

        .logo-icon {
            width: 40px; height: 40px; background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 12px; display: flex; align-items: center; justify-content: center;
            color: white; font-size: 18px; font-weight: 700;
            box-shadow: 0 4px 12px var(--accent-glow);
        }

        .nav-links { display: flex; gap: 36px; list-style: none; }
        .nav-links a {
            color: var(--text-secondary); text-decoration: none; font-size: 15px; font-weight: 500;
            transition: all var(--transition); padding: 6px 0; position: relative;
        }
        .nav-links a::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
            background: var(--accent); border-radius: 2px; transition: width var(--transition);
        }
        .nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
        .nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

        .nav-cta {
            padding: 12px 24px; background: var(--accent); border: none; color: white;
            font-family: 'Outfit', sans-serif; font-size: 14px; font-weight: 600;
            border-radius: var(--radius-md); cursor: pointer; transition: all var(--transition);
            box-shadow: 0 4px 12px var(--accent-glow); text-decoration: none;
        }
        .nav-cta:hover {
            transform: translateY(-2px); box-shadow: 0 8px 20px var(--accent-glow); color: white;
        }
        .nav-cta:active { transform: translateY(0); }

        .nav-mobile {
            display: none; position: fixed; top: var(--nav-height); left: 0; width: 100%;
            background: var(--bg-card-solid); border-bottom: 1px solid var(--border-color);
            padding: 16px 20px; box-shadow: var(--shadow-lg); z-index: 999;
        }
        .nav-mobile.active { display: block; }
        .nav-mobile a {
            display: block; padding: 14px 16px; color: var(--text-secondary); text-decoration: none;
            font-size: 15px; font-weight: 500; border-radius: var(--radius-md); transition: all var(--transition);
        }
        .nav-mobile a:hover, .nav-mobile a.active { background: var(--accent-soft); color: var(--accent); }
        .nav-mobile .nav-cta { width: 100%; margin-top: 12px; text-align: center; display: block; }

        .hero {
            min-height: 100vh; min-height: 100dvh;
            display: flex; flex-direction: column; justify-content: center;
            align-items: center; text-align: center;
            padding: calc(var(--nav-height) + 80px) 24px 100px;
            position: relative; z-index: 1;
        }

        .hero-content { max-width: 900px; }

        .hero-badge {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 10px 20px; background: var(--bg-card); backdrop-filter: blur(20px);
            border: 1px solid var(--border-color); border-radius: 100px;
            font-size: 14px; color: var(--text-secondary); margin-bottom: 36px;
            box-shadow: var(--shadow-sm); animation: fadeUp 0.6s ease forwards;
        }
        .hero-badge-dot {
            width: 8px; height: 8px; background: linear-gradient(135deg, #10b981, var(--accent));
            border-radius: 50%; animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.2); }
        }

        .hero h1 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif;
            font-size: clamp(42px, 8vw, 76px); font-weight: 800; line-height: 1.1;
            margin-bottom: 28px; animation: fadeUp 0.6s ease 0.1s forwards; opacity: 0;
            letter-spacing: -1.5px;
        }
        .hero h1 .gradient {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 50%, #a78bfa 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
        }

        .hero-subtitle {
            font-size: clamp(15px, 2vw, 18px); color: var(--text-secondary);
            max-width: 800px; margin: 0 auto 48px; animation: fadeUp 0.6s ease 0.2s forwards;
            opacity: 0; line-height: 1.8; white-space: nowrap;
        }

        .hero-buttons {
            display: flex; gap: 16px; justify-content: center; animation: fadeUp 0.6s ease 0.3s forwards;
            opacity: 0; flex-wrap: wrap;
        }

        .btn-primary {
            padding: 16px 40px; background: var(--accent); border: none; color: white;
            font-family: 'Outfit', sans-serif; font-size: 15px; font-weight: 600;
            border-radius: var(--radius-lg); cursor: pointer; transition: all var(--transition);
            box-shadow: 0 4px 16px var(--accent-glow); text-decoration: none;
            display: inline-flex; align-items: center; justify-content: center; gap: 10px;
        }
        .btn-primary:hover {
            transform: translateY(-3px); box-shadow: 0 12px 32px var(--accent-glow); color: white;
        }
        .btn-primary:active { transform: translateY(-1px); }

        .btn-secondary {
            padding: 16px 40px; background: var(--bg-card); backdrop-filter: blur(20px);
            border: 1px solid var(--border-color-strong); color: var(--text-primary);
            font-family: 'Outfit', sans-serif; font-size: 15px; font-weight: 600;
            border-radius: var(--radius-lg); cursor: pointer; transition: all var(--transition);
            text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
        }
        .btn-secondary:hover {
            background: var(--bg-card-solid); border-color: var(--accent);
            color: var(--accent); transform: translateY(-2px);
        }
        .btn-secondary:active { transform: translateY(0); }

        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .stats-bar {
            display: flex; justify-content: center; gap: clamp(24px, 5vw, 80px);
            padding: 56px 24px; margin-top: 64px; animation: fadeUp 0.6s ease 0.4s forwards;
            opacity: 0; flex-wrap: nowrap;
        }
        .stat-item { text-align: center; }
        .stat-number {
            font-family: 'Outfit', sans-serif; font-size: clamp(40px, 5vw, 56px); font-weight: 800;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
            line-height: 1.1;
        }
        .stat-label { font-size: 15px; color: var(--text-muted); margin-top: 8px; font-weight: 500; }

        section { padding: clamp(80px, 12vw, 130px) clamp(24px, 6vw, 80px); position: relative; z-index: 1; }

        .section-header { text-align: center; margin-bottom: clamp(56px, 8vw, 80px); }
        .section-tag {
            font-family: 'Outfit', sans-serif; font-size: 12px; color: var(--accent);
            font-weight: 700; letter-spacing: 4px; text-transform: uppercase; margin-bottom: 16px;
        }
        .section-title {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif;
            font-size: clamp(32px, 4.5vw, 46px); font-weight: 700; margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .section-desc {
            font-size: 17px; color: var(--text-secondary); max-width: 580px;
            margin: 0 auto; line-height: 1.8;
        }

        .services-section { background: var(--bg-secondary); }

        .services-grid {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
            gap: 28px; max-width: 1280px; margin: 0 auto;
        }

        .service-card {
            background: var(--bg-card); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--border-color); padding: 36px;
            border-radius: var(--radius-xl); position: relative; overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-sm);
        }

        .service-card::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light), transparent);
            opacity: 0; transition: opacity 0.4s ease;
        }

        .service-card::after {
            content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            background: linear-gradient(135deg, var(--accent-soft), transparent 60%);
            opacity: 0; transition: opacity 0.4s ease; pointer-events: none;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
            border-color: transparent;
            background: var(--bg-card-solid);
        }
        .service-card:hover::before { opacity: 1; }
        .service-card:hover::after { opacity: 1; }

        .service-card-header { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; position: relative; z-index: 1; }

        .service-icon {
            width: 60px; height: 60px; display: flex; align-items: center; justify-content: center;
            font-size: 28px; background: var(--bg-card-solid); border: 1px solid var(--border-color);
            border-radius: 16px; transition: all 0.4s ease;
        }
        .service-card:hover .service-icon {
            background: var(--accent); border-color: var(--accent);
            transform: scale(1.08) rotate(-4deg);
            box-shadow: 0 8px 24px var(--accent-glow);
        }

        .service-card h3 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif; font-size: 19px; font-weight: 700;
            color: var(--text-primary); line-height: 1.3; position: relative; z-index: 1;
        }
        .service-card > p { font-size: 15px; color: var(--text-secondary); line-height: 1.85; position: relative; z-index: 1; }

        .security-section { background: var(--bg-primary); }

        .security-grid {
            display: grid; grid-template-columns: repeat(4, 1fr);
            gap: 20px; max-width: 1200px; margin: 0 auto;
        }

        .security-item {
            text-align: center; padding: 32px 20px;
            background: var(--bg-card); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--border-color); border-radius: var(--radius-xl);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .security-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            background: var(--bg-card-solid);
        }

        .security-icon {
            width: 64px; height: 64px; margin: 0 auto 20px; display: flex; align-items: center;
            justify-content: center; font-size: 28px;
            background: var(--accent-soft); border-radius: 20px;
            transition: all 0.4s ease;
        }
        .security-item:hover .security-icon {
            transform: scale(1.1);
            background: var(--accent);
            box-shadow: 0 8px 32px var(--accent-glow);
        }

        .security-item h4 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif; font-size: 16px; font-weight: 700;
            margin-bottom: 8px;
        }
        .security-item p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

        .details-section { background: var(--bg-secondary); }

        .details-grid { max-width: 1200px; margin: 0 auto; }

        .detail-item {
            display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center;
            padding: 64px 0; border-bottom: 1px solid var(--border-color);
        }
        .detail-item:last-child { border-bottom: none; }
        .detail-item:nth-child(even) .detail-content { order: 2; }
        .detail-item:nth-child(even) .detail-visual { order: 1; }

        .detail-tag {
            font-family: 'Outfit', sans-serif; font-size: 13px; color: var(--accent);
            font-weight: 700; letter-spacing: 4px; margin-bottom: 18px;
        }
        .detail-content h3 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif;
            font-size: clamp(26px, 3vw, 34px); font-weight: 700; margin-bottom: 22px;
            letter-spacing: -0.3px;
        }
        .detail-content p { color: var(--text-secondary); margin-bottom: 28px; line-height: 2; font-size: 16px; }

        .detail-features { display: flex; flex-wrap: wrap; gap: 12px; }
        .detail-feature {
            padding: 10px 20px; background: var(--bg-card-solid); border: 1px solid var(--border-color);
            font-size: 14px; color: var(--text-secondary); border-radius: 100px; font-weight: 500;
            transition: all var(--transition);
        }
        .detail-feature:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

        .detail-visual {
            height: 320px; background: var(--bg-card); backdrop-filter: blur(24px);
            border: 1px solid var(--border-color); display: flex; align-items: center;
            justify-content: center; border-radius: var(--radius-xl); position: relative;
            overflow: hidden; box-shadow: var(--shadow-md);
        }

        .detail-visual::before {
            content: ''; position: absolute; width: 260px; height: 260px;
            background: radial-gradient(circle, var(--accent-soft) 0%, transparent 70%);
            animation: pulse 4s ease-in-out infinite;
        }
        .detail-visual::after {
            content: ''; position: absolute; inset: 1px; border-radius: var(--radius-xl);
            background: linear-gradient(135deg, var(--accent) 0%, transparent 50%, var(--accent-soft) 100%);
            opacity: 0.3; mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude; -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor; padding: 1px;
        }
        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.6; }
            50% { transform: scale(1.1); opacity: 0.3; }
        }

        .detail-visual-content { position: relative; z-index: 1; text-align: center; padding: 32px; }
        .detail-visual-icon { font-size: 80px; margin-bottom: 20px; filter: drop-shadow(0 0 20px var(--accent)); }
        .detail-visual-text {
            font-family: 'Outfit', sans-serif; font-size: 12px; font-weight: 700;
            color: var(--accent); letter-spacing: 6px; text-transform: uppercase;
            text-shadow: 0 0 20px var(--accent);
        }

        .usecases-section { background: var(--bg-primary); }

        .usecases-grid {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px; max-width: 1200px; margin: 0 auto;
        }

        .usecase-card {
            background: var(--bg-card); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--border-color); padding: 40px;
            border-radius: var(--radius-xl); transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .usecase-card:hover {
            transform: translateY(-6px); box-shadow: var(--shadow-lg);
            border-color: transparent; background: var(--bg-card-solid);
        }
        .usecase-icon { font-size: 48px; margin-bottom: 24px; }
        .usecase-card h4 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif; font-size: 18px; font-weight: 700;
            margin-bottom: 12px;
        }
        .usecase-card p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }

        .servers-section { background: var(--bg-secondary); }

        .servers-grid {
            display: grid; grid-template-columns: repeat(4, 1fr);
            gap: 24px; max-width: 1200px; margin: 0 auto;
        }

        .server-card {
            background: var(--bg-card); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
            border: 1px solid var(--border-color); padding: 32px 24px;
            border-radius: var(--radius-xl); text-align: center;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex; flex-direction: column; align-items: center;
            min-height: 320px;
        }
        .server-card:hover {
            transform: translateY(-6px); box-shadow: var(--shadow-lg);
            border-color: var(--accent-glow);
        }
        .server-flag { font-size: 48px; margin-bottom: 20px; }
        .server-card h3 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif; font-size: 18px; font-weight: 700;
            margin-bottom: 12px; color: var(--text-primary);
        }
        .server-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; flex: 1; }
        .server-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 0; }
        .server-tags span {
            padding: 6px 14px; background: var(--accent-soft); border-radius: 100px;
            font-size: 12px; color: var(--accent); font-weight: 500;
        }
        .server-buy-btn {
            display: block; width: 100%; margin-top: 16px; padding: 12px 20px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: white; border-radius: var(--radius-md);
            font-size: 14px; font-weight: 600; text-decoration: none;
            text-align: center; position: relative; overflow: hidden;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .server-buy-btn::before {
            content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s ease;
        }
        .server-buy-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px var(--accent-glow), 0 0 40px var(--accent-soft);
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }
        .server-buy-btn:hover::before { left: 100%; }
        .server-buy-btn:active {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px var(--accent-glow);
        }

        .tags-section {
            padding: 56px clamp(24px, 6vw, 80px);
            background: var(--bg-card); border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .tags-container {
            max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap;
            justify-content: center; gap: 14px;
        }
        .tag {
            padding: 12px 26px; background: var(--bg-secondary); border: 1px solid var(--border-color);
            font-size: 14px; color: var(--text-secondary); border-radius: 100px; font-weight: 500;
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--accent); border-color: var(--accent); color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px var(--accent-glow);
        }

        .cta-section {
            text-align: center; padding: clamp(100px, 15vw, 150px) clamp(24px, 6vw, 80px);
            background: var(--bg-secondary);
        }
        .cta-section h2 {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif;
            font-size: clamp(32px, 4.5vw, 48px); font-weight: 700; margin-bottom: 20px;
        }
        .cta-section > p { color: var(--text-secondary); font-size: 17px; margin-bottom: 48px; }
        .cta-buttons { display: flex; justify-content: center; gap: 18px; margin-bottom: 56px; flex-wrap: wrap; }

        .process-steps {
            display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; align-items: center;
        }
        .process-step { display: flex; align-items: center; gap: 12px; color: var(--text-secondary); font-size: 15px; font-weight: 500; }
        .step-number {
            width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
            background: var(--accent); color: white; font-family: 'Outfit', sans-serif;
            font-size: 12px; font-weight: 700; border-radius: 50%; flex-shrink: 0;
        }
        .step-arrow { color: var(--text-muted); font-size: 20px; }

        footer {
            padding: 56px clamp(24px, 6vw, 80px); background: var(--bg-card);
            border-top: 1px solid var(--border-color); text-align: center;
        }
        .footer-content { max-width: 760px; margin: 0 auto; }
        .footer-logo {
            font-family: 'Outfit', 'Noto Sans SC', sans-serif; font-size: 26px; font-weight: 800;
            margin-bottom: 18px; display: flex; align-items: center; justify-content: center; gap: 14px;
        }
        .footer-logo-icon {
            width: 36px; height: 36px; background: linear-gradient(135deg, var(--accent), var(--accent-light));
            border-radius: 10px; display: flex; align-items: center; justify-content: center;
            color: white; font-size: 18px; font-weight: 700;
        }
        .footer-desc { color: var(--text-muted); font-size: 15px; margin-bottom: 28px; line-height: 1.8; }
        .footer-links { display: flex; justify-content: center; gap: 36px; margin-bottom: 36px; flex-wrap: wrap; }
        .footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 14px; font-weight: 500; transition: color var(--transition); }
        .footer-links a:hover { color: var(--accent); }
        .footer-copyright { color: var(--text-muted); font-size: 14px; }

        .back-to-top {
            position: fixed; bottom: 32px; right: 32px;
            width: 48px; height: 48px;
            background: var(--bg-card); backdrop-filter: blur(20px); border: 1px solid var(--border-color);
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            font-size: 20px; cursor: pointer; box-shadow: var(--shadow-md);
            opacity: 0; visibility: hidden; transition: all var(--transition); z-index: 900;
        }
        .back-to-top.visible { opacity: 1; visibility: visible; }
        .back-to-top:hover {
            transform: translateY(-4px); box-shadow: var(--shadow-lg);
            background: var(--accent); color: white; border-color: var(--accent);
        }

        .service-float {
            position: fixed; bottom: 100px; right: 32px;
            width: 48px; height: 48px;
            background: linear-gradient(135deg, #0088cc, #00aaff);
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            font-size: 20px; color: white; box-shadow: 0 4px 20px rgba(0, 136, 204, 0.4);
            transition: all 0.3s ease; z-index: 900; text-decoration: none;
        }
        .service-float:hover {
            transform: translateY(-4px) scale(1.1);
            box-shadow: 0 8px 30px rgba(0, 136, 204, 0.5);
            color: white;
        }

        .contact-box {
            display: flex; justify-content: center; align-items: center;
            padding: 40px; background: var(--bg-card);
            border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color);
        }
        .contact-tg {
            display: inline-flex; align-items: center; gap: 12px;
            padding: 14px 32px; background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: white; border-radius: var(--radius-lg); font-size: 16px; font-weight: 600;
            text-decoration: none; transition: all 0.3s ease;
            box-shadow: 0 4px 16px var(--accent-glow);
        }
        .contact-tg:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px var(--accent-glow);
            color: white;
        }
        .contact-tg i { font-size: 20px; }

        .fade-in { opacity: 0; transform: translateY(32px); transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1); }
        .fade-in.visible { opacity: 1; transform: translateY(0); }

        @media (max-width: 1024px) {
            .detail-item { gap: 48px; }
        }

        @media (max-width: 900px) {
            .menu-toggle { display: flex; }
            .nav-links { display: none; }
            .header-controls { padding: 14px 20px; gap: 8px; }
            .detail-item { grid-template-columns: 1fr; gap: 36px; padding: 48px 0; }
            .detail-item:nth-child(even) .detail-content, .detail-item:nth-child(even) .detail-visual { order: unset; }
            .detail-visual { height: 240px; }
        }

        @media (max-width: 640px) {
            nav { padding: 0 20px; }
            .header-controls { bottom: 180px; right: 16px; gap: 10px; }
            .theme-toggle, .menu-toggle { width: 42px; height: 42px; }
            .hero { padding: calc(var(--nav-height) + 50px) 20px 70px; }
            .hero h1 { font-size: clamp(34px, 10vw, 48px); }
            .hero-subtitle { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 14px; }
            .hero-buttons { flex-direction: column; width: 100%; max-width: 320px; }
            .btn-primary, .btn-secondary { width: 100%; }
            .stats-bar { gap: 16px; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
            .stat-item { min-width: 70px; }
            .stat-number { font-size: clamp(28px, 5vw, 36px); }
            .stat-label { font-size: 11px; }
            section { padding: 60px 20px; }
            .services-grid { grid-template-columns: 1fr; }
            .usecases-grid { grid-template-columns: 1fr; }
            .security-grid { grid-template-columns: repeat(2, 1fr); }
            .servers-grid { grid-template-columns: repeat(2, 1fr); }
            .cta-buttons { flex-direction: column; align-items: center; }
            .cta-buttons .btn-primary, .cta-buttons .btn-secondary { width: 100%; max-width: 320px; }
            .process-steps { flex-direction: column; gap: 18px; }
            .step-arrow { transform: rotate(90deg); }
            .back-to-top { bottom: 24px; right: 16px; width: 42px; height: 42px; font-size: 18px; }
            .service-float { bottom: 80px; right: 16px; width: 42px; height: 42px; font-size: 18px; }
            .header-controls { bottom: 150px; right: 16px; gap: 8px; }
            .theme-toggle, .menu-toggle { width: 42px; height: 42px; font-size: 18px; }
            .contact-box { padding: 30px 20px; }
            .contact-tg { padding: 12px 24px; font-size: 14px; }
        }

        @media (max-width: 400px) {
            .security-grid { grid-template-columns: 1fr; }
            .servers-grid { grid-template-columns: 1fr; }
        }

        @media print {
            .theme-toggle, .back-to-top, .nav-mobile, .menu-toggle, .header-controls, .bg-main { display: none !important; }
            nav { position: relative; }
            .hero { min-height: auto; padding-top: 40px; }
        }