:root {
            --bg-color: #000000;
            --text-primary: #ffffff;
            --text-secondary: #86868b;
            --surface-color: rgba(28, 28, 30, 0.6);
            --accent-glow: rgba(255, 255, 255, 0.15);
            --orb-1-color: #4a4a4a;
            --orb-2-color: #2a2a2a;
            --orb-3-color: #333333;
            --btn-voice-bg: rgba(255, 255, 255, 0.9);
            --btn-voice-color: #000000;
            --btn-voice-border: rgba(255,255,255,1);
            --btn-voice-hover-bg: #ffffff;
            --btn-text-bg: rgba(30, 30, 30, 0.6);
            --btn-text-color: #ffffff;
            --btn-text-border: rgba(255, 255, 255, 0.1);
            --btn-text-hover-bg: rgba(40, 40, 40, 0.8);
            --btn-text-hover-border: rgba(255, 255, 255, 0.3);
            --icon-voice-bg: #000;
            --icon-voice-color: #fff;
            --icon-text-bg: rgba(255,255,255,0.1);
            --icon-text-color: #fff;
            --footer-bg: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
            --online-badge-bg: rgba(255, 255, 255, 0.05);
            --online-badge-border: rgba(255, 255, 255, 0.1);
            --h1-gradient: linear-gradient(180deg, #ffffff 0%, #7a7a7a 100%);
        }

        body.light-theme {
            --bg-color: #ffffff;
            --text-primary: #000000;
            --text-secondary: #666666;
            --surface-color: rgba(240, 240, 245, 0.6);
            --accent-glow: rgba(0, 0, 0, 0.05);
            --orb-1-color: #e8e8f0;
            --orb-2-color: #f5f5fa;
            --orb-3-color: #efeff5;
            --btn-voice-bg: rgba(0, 0, 0, 0.9);
            --btn-voice-color: #ffffff;
            --btn-voice-border: rgba(0,0,0,1);
            --btn-voice-hover-bg: #1a1a1a;
            --btn-text-bg: rgba(245, 245, 250, 0.8);
            --btn-text-color: #000000;
            --btn-text-border: rgba(0, 0, 0, 0.1);
            --btn-text-hover-bg: rgba(235, 235, 240, 0.9);
            --btn-text-hover-border: rgba(0, 0, 0, 0.3);
            --icon-voice-bg: #fff;
            --icon-voice-color: #000;
            --icon-text-bg: rgba(0,0,0,0.08);
            --icon-text-color: #000;
            --footer-bg: linear-gradient(to top, rgba(255,255,255,0.8), transparent);
            --online-badge-bg: rgba(0, 0, 0, 0.05);
            --online-badge-border: rgba(0, 0, 0, 0.1);
            --h1-gradient: linear-gradient(180deg, #000000 0%, #666666 100%);
        }

        * {
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        *::-webkit-scrollbar {
            display: none;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
            background-color: var(--bg-color);
            color: var(--text-primary);
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        .bg-noise {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 1;
            opacity: 0.05;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
        }

        .orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            z-index: 0;
            opacity: 0.4;
            animation: float 20s infinite ease-in-out;
        }

        .orb-1 {
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, var(--orb-1-color) 0%, transparent 70%);
            top: -100px;
            left: -100px;
            animation-delay: 0s;
        }

        .orb-2 {
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, var(--orb-2-color) 0%, transparent 70%);
            right: -100px;
            animation-delay: -5s;
        }

        .orb-3 {
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, var(--orb-3-color) 0%, transparent 70%);
            top: 40%;
            left: 60%;
            animation-delay: -10s;
        }

        @keyframes float {
            0% { transform: translate(0, 0) scale(1); }
            33% { transform: translate(30px, -50px) scale(1.1); }
            66% { transform: translate(-20px, 20px) scale(0.9); }
            100% { transform: translate(0, 0) scale(1); }
        }

        .container {
            position: relative;
            z-index: 10;
            text-align: center;
            padding: 15px;
            max-width: 500px;
            width: 100%;
            opacity: 0;
            transform: scale(0.95) translateY(10px);
            animation: introFade 1.2s cubic-bezier(0.19, 1, 0.22, 1) forwards;
        }

        .online-badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 10px;
            background: var(--online-badge-bg);
            border: 1px solid var(--online-badge-border);
            border-radius: 18px;
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-bottom: 1.2rem;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
        }

        .status-dot {
            width: 6px;
            height: 6px;
            background-color: #32d74b;
            border-radius: 50%;
            margin-right: 8px;
            box-shadow: 0 0 8px #32d74b;
            animation: pulse-dot 2s infinite;
        }

        h1 {
            font-weight: 800;
            font-size: 3.2rem;
            margin: 0 0 8px 0;
            letter-spacing: -0.04em;
            background: var(--h1-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            filter: drop-shadow(0 0 40px rgba(255,255,255,0.15));
        }

        p.subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin: 0 0 2.5rem 0;
            font-weight: 400;
            letter-spacing: -0.01em;
            max-width: 85%;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.4;
        }

        .actions {
            display: flex;
            flex-direction: column;
            gap: 14px;
            align-items: center;
            perspective: 1000px;
        }

        .btn {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            width: 100%;
            max-width: 280px;
            height: 64px;
            border-radius: 20px;
            font-size: 1.05rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
            cursor: pointer;
            overflow: hidden;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .btn-voice {
            background: var(--btn-voice-bg);
            color: var(--btn-voice-color);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
            border: 1px solid var(--btn-voice-border);
        }

        .btn-voice:hover {
            transform: translateY(-2px) scale(1.001);
            box-shadow: 0 30px 60px rgba(255, 255, 255, 0.15);
            background: var(--btn-voice-hover-bg);
        }

        .btn-text {
            background: var(--btn-text-bg);
            color: var(--btn-text-color);
            border: 1px solid var(--btn-text-border);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .btn-text:hover {
            background: var(--btn-text-hover-bg);
            transform: translateY(-2px) scale(1.001);
            border-color: var(--btn-text-hover-border);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }

        .btn-content {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-arrow {
            opacity: 0.5;
            transition: transform 0.3s ease;
        }

        .btn:hover .btn-arrow {
            transform: translateX(5px);
            opacity: 1;
        }

        .icon-box {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
        }

        .btn-voice .icon-box {
            background: var(--icon-voice-bg);
            color: var(--icon-voice-color);
        }

        .btn-text .icon-box {
            background: var(--icon-text-bg);
            color: var(--icon-text-color);
        }

        .footer {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            font-size: 0.8rem;
            color: var(--text-secondary);
            opacity: 0.6;
            z-index: 10;
            padding: 20px;
            text-align: center;
            background: var(--footer-bg);
        }

        .footer a {
            color: var(--text-secondary);
            text-decoration: none;
            margin: 0 10px;
            transition: color 0.3s;
        }

        .footer a:hover {
            color: #fff;
        }

        @keyframes introFade {
            to {
                opacity: 1;
                transform: scale(1) translateY(0);
            }
        }

        @keyframes pulse-dot {
            0% { opacity: 0.5; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.2); }
            100% { opacity: 0.5; transform: scale(1); }
        }

        @media (min-width: 768px) {
            .actions {
                flex-direction: row;
                justify-content: center;
                gap: 30px;
            }
            
            h1 {
                font-size: 5.5rem;
            }
            
            .btn {
                width: 280px;
                padding: 0 25px;
            }
        }

        .theme-toggle {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 20;
            width: 60px;
            height: 34px;
            border-radius: 17px;
            background: rgba(52, 52, 55, 1);
            border: none;
            cursor: pointer;
            padding: 0;
            display: flex;
            align-items: center;
            justify-content: flex-start;
            transition: background 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
            outline: none;
            -webkit-appearance: none;
        }

        .theme-toggle::after {
            content: '';
            position: absolute;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
            left: 2px;
            transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body.light-theme .theme-toggle {
            background: rgba(76, 175, 80, 1);
        }

        body.light-theme .theme-toggle::after {
            left: 28px;
        }

        .theme-toggle:active {
            box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
        }

        .theme-toggle:active::after {
            width: 35px;
        }

        body.light-theme .theme-toggle:active::after {
            width: 35px;
            left: 23px;
        }