* { margin: 0; padding: 0; box-sizing: border-box; }
    
    :root {
        --bg: #000000;
        --bg-card: rgba(255,255,255,0.02);
        --text: #ffffff;
        --text-secondary: #a3a3a3;
        --text-muted: #525252;
        --border: rgba(255,255,255,0.08);
        --border-hover: rgba(255,255,255,0.15);
        --grid-color: rgba(255,255,255,0.03);
        --particle-color: #fff;
        --line-color-start: rgba(255,255,255,0.03);
        --line-color-mid: rgba(255,255,255,0.08);
        --ripple-color: rgba(255,255,255,0.05);
        --noise-opacity: 0.015;
        --vignette: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.4) 100%);
    }

    [data-theme="light"] {
        --bg: #ffffff;
        --bg-card: rgba(0,0,0,0.02);
        --text: #000000;
        --text-secondary: #525252;
        --text-muted: #a3a3a3;
        --border: rgba(0,0,0,0.08);
        --border-hover: rgba(0,0,0,0.15);
        --grid-color: rgba(0,0,0,0.03);
        --particle-color: #000;
        --line-color-start: rgba(0,0,0,0.03);
        --line-color-mid: rgba(0,0,0,0.08);
        --ripple-color: rgba(0,0,0,0.05);
        --noise-opacity: 0.02;
        --vignette: radial-gradient(ellipse at center, transparent 0%, rgba(255,255,255,0.4) 100%);
    }
    
    html { scroll-behavior: smooth; }
    
    body {
        font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.6;
        min-height: 100vh;
        overflow-x: hidden;
    }
    
    /* Animated grid */
    .grid-bg {
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 1;
        background-image:
            linear-gradient(var(--grid-color) 1px, transparent 1px),
            linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
        background-size: 80px 80px;
        animation: gridMove 20s linear infinite;
    }
    
    @keyframes gridMove {
        0% { background-position: 0 0; }
        100% { background-position: 80px 80px; }
    }
    
    /* Particles */
    .particles {
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 2;
        overflow: hidden;
    }
    
    .particle {
        position: absolute;
        background: var(--particle-color);
        border-radius: 50%;
        animation: particleFloat linear infinite;
    }
    
    @keyframes particleFloat {
        0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
        10% { opacity: 1; }
        90% { opacity: 1; }
        100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
    }
    
    /* Animated lines */
    .animated-lines {
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 1;
        overflow: hidden;
    }
    
    .line {
        position: absolute;
        top: 0;
        bottom: 0;
        width: 1px;
        background: linear-gradient(to bottom,
            transparent 0%,
            var(--line-color-start) 15%,
            var(--line-color-mid) 50%,
            var(--line-color-start) 85%,
            transparent 100%
        );
        animation: linePulse 4s ease-in-out infinite;
    }
    
    @keyframes linePulse {
        0%, 100% { opacity: 0.3; transform: scaleY(1); }
        50% { opacity: 1; transform: scaleY(1.02); }
    }
    
    /* Ripples */
    .ripples {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        pointer-events: none;
        z-index: 1;
    }
    
    .ripple {
        position: absolute;
        border: 1px solid var(--ripple-color);
        border-radius: 50%;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    
    .ripple-1 { width: 400px; height: 400px; animation: rippleAnim 4s ease-out infinite; }
    .ripple-2 { width: 600px; height: 600px; animation: rippleAnim 4s ease-out infinite 1s; }
    .ripple-3 { width: 800px; height: 800px; animation: rippleAnim 4s ease-out infinite 2s; }
    
    @keyframes rippleAnim {
        0% { transform: translate(-50%, -50%) scale(0.8); opacity: 0.5; }
        100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
    }
    
    /* Noise */
    .noise {
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 1000;
        opacity: var(--noise-opacity);
        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='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    }
    
    /* Vignette */
    .vignette {
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 999;
        background: var(--vignette);
    }
    
    /* Navigation */
    .nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        padding: 16px 40px;
        transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }
    
    .nav.scrolled {
        background: rgba(0,0,0,0.8);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border);
    }

    [data-theme="light"] .nav.scrolled {
        background: rgba(255,255,255,0.8);
    }
    
    .nav-content {
        max-width: 1200px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .logo {
        display: flex;
        align-items: center;
        gap: 12px;
        text-decoration: none;
        color: var(--text);
    }
    
    .logo-icon { width: 36px; height: 36px; }
    .logo-text { font-size: 18px; font-weight: 700; letter-spacing: -0.5px; }
    
    .nav-links { display: flex; align-items: center; gap: 24px; }

    .nav-version {
        padding: 4px 10px;
        background: rgba(255,255,255,0.08);
        border-radius: 6px;
        font-size: 12px;
        font-weight: 600;
        color: var(--text-secondary);
    }

    [data-theme="light"] .nav-version {
        background: rgba(0,0,0,0.08);
    }
    
    .nav-link {
        color: var(--text-secondary);
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        transition: color 0.2s ease;
    }
    
    .nav-link:hover { color: var(--text); }
    
    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 24px;
        background: linear-gradient(135deg, #fff 0%, #e5e5e5 100%);
        color: #000;
        text-decoration: none;
        font-size: 14px;
        font-weight: 600;
        border-radius: 12px;
        border: none;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        box-shadow: 0 4px 20px rgba(255,255,255,0.15);
    }
    
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(255,255,255,0.25);
    }
    
    .mobile-menu { display: none; background: none; border: none; color: var(--text); cursor: pointer; }

    /* Theme Toggle */
    .theme-toggle {
        position: relative;
        width: 64px;
        height: 32px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: 100px;
        cursor: pointer;
        transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        display: flex;
        align-items: center;
        padding: 4px;
    }

    .theme-toggle:hover {
        border-color: var(--border-hover);
        box-shadow: 0 4px 20px rgba(255,255,255,0.05);
    }

    .theme-toggle-slider {
        position: absolute;
        width: 24px;
        height: 24px;
        background: linear-gradient(135deg, #fff 0%, #e5e5e5 100%);
        border-radius: 50%;
        transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        left: 4px;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }

    [data-theme="light"] .theme-toggle-slider {
        left: 36px;
        background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    }

    .theme-toggle-icon {
        width: 14px;
        height: 14px;
        transition: all 0.3s ease;
    }

    .theme-toggle-icon.sun {
        display: none;
        color: #fff;
    }

    .theme-toggle-icon.moon {
        display: block;
        color: #000;
    }

    [data-theme="light"] .theme-toggle-icon.sun {
        display: block;
    }

    [data-theme="light"] .theme-toggle-icon.moon {
        display: none;
    }
    
    /* Hero */
    .hero {
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 120px 40px 80px;
        position: relative;
        z-index: 10;
    }
    
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 8px 16px;
        background: rgba(255,255,255,0.05);
        border: 1px solid var(--border);
        border-radius: 100px;
        font-size: 13px;
        font-weight: 500;
        color: var(--text-secondary);
        margin-bottom: 32px;
        animation: fadeIn 0.8s ease;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }
    
    .badge-dot {
        width: 8px;
        height: 8px;
        background: #30D158;
        border-radius: 50%;
        animation: pulse 2s ease-in-out infinite;
    }
    
    @keyframes pulse {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.5; }
    }
    
    .hero-title {
        font-size: clamp(48px, 8vw, 96px);
        font-weight: 800;
        text-align: center;
        letter-spacing: -3px;
        line-height: 1;
        margin-bottom: 24px;
        animation: fadeIn 0.8s ease 0.1s both;
    }
    
    .hero-title-gradient {
        background: linear-gradient(135deg, #fff 0%, #737373 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

    [data-theme="light"] .hero-title-gradient {
        background: linear-gradient(135deg, #000 0%, #404040 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);
        text-align: center;
        max-width: 560px;
        margin-bottom: 40px;
        line-height: 1.7;
        animation: fadeIn 0.8s ease 0.2s both;
    }
    
    .hero-buttons {
        display: flex;
        gap: 16px;
        margin-bottom: 80px;
        animation: fadeIn 0.8s ease 0.3s both;
    }
    
    .btn-secondary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 24px;
        background: transparent;
        color: var(--text);
        text-decoration: none;
        font-size: 14px;
        font-weight: 600;
        border-radius: 12px;
        border: 1px solid var(--border);
        transition: all 0.3s ease;
    }
    
    .btn-secondary:hover {
        background: rgba(255,255,255,0.05);
        border-color: var(--border-hover);
    }
    
    /* MacBook Demo */
    .hero-demo {
        width: 100%;
        max-width: 1000px;
        animation: fadeIn 0.8s ease 0.4s both;
    }
    
    .macbook-wrapper {
        position: relative;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .macbook-glow {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 120%;
        height: 120%;
        background: radial-gradient(ellipse at center, rgba(255,255,255,0.03) 0%, transparent 60%);
        pointer-events: none;
        animation: macbookGlow 4s ease-in-out infinite;
    }
    
    @keyframes macbookGlow {
        0%, 100% { opacity: 0.8; }
        50% { opacity: 1; }
    }
    
    .macbook-frame {
        width: 100%;
        max-width: 880px;
        background: linear-gradient(180deg, #3d3d3d 0%, #2a2a2a 50%, #1f1f1f 100%);
        border-radius: 16px;
        padding: 8px;
        box-shadow: 
            0 -1px 0 0 rgba(255,255,255,0.08),
            0 0 0 1px rgba(255,255,255,0.1),
            0 40px 80px rgba(0,0,0,0.7);
    }
    
    .macbook-screen {
        position: relative;
        width: 100%;
        aspect-ratio: 16 / 10;
        border-radius: 8px;
        overflow: hidden;
        background: #000;
    }
    
    .wallpaper {
        position: absolute;
        inset: 0;
        background: url('../images/wallpaper.png') center/cover no-repeat;
    }
    
    .menubar {
        position: relative;
        z-index: 50;
        height: 25px;
        background: rgba(0,0,0,0.2);
        backdrop-filter: blur(80px) saturate(200%);
        -webkit-backdrop-filter: blur(80px) saturate(200%);
        display: flex;
        align-items: center;
        justify-content: flex-end;
        padding: 0 12px;
        font-size: 13px;
        font-weight: 500;
        color: rgba(255,255,255,0.95);
        border-bottom: 0.5px solid rgba(255,255,255,0.08);
    }
    
    /* Notch */
    .notch {
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        background: #000;
        z-index: 100;
        overflow: hidden;
        transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    
    .notch-camera {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        display: flex;
        align-items: center;
        gap: 6px;
        transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    
    .camera-lens {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: radial-gradient(circle at 35% 35%, #2d2d2d, #0a0a0a);
    }
    
    .camera-inner {
        width: 3px;
        height: 3px;
        border-radius: 50%;
        background: #171717;
        margin: 2.5px;
    }
    
    .camera-indicator {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: #30D158;
        box-shadow: 0 0 10px rgba(48,209,88,0.6);
        animation: indicatorPulse 1.5s ease-in-out infinite;
        display: none;
    }
    
    .camera-indicator.visible { display: block; }
    
    @keyframes indicatorPulse {
        0%, 100% { opacity: 1; transform: scale(1); }
        50% { opacity: 0.6; transform: scale(1.3); }
    }
    
    /* Notch content */
    .notch-content {
        display: none;
        align-items: center;
        height: 100%;
        padding: 0 12px 0 36px;
        gap: 10px;
        animation: contentEnter 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    
    .notch-content.active { display: flex; }
    
    @keyframes contentEnter {
        from { opacity: 0; transform: scale(0.9); }
        to { opacity: 1; transform: scale(1); }
    }
    
    /* Music */
    .music-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: linear-gradient(180deg, #FC3C44 0%, #E31C24 100%);
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 20px rgba(252,60,68,0.4);
    }
    
    .music-info { flex: 1; min-width: 0; }
    .music-header { display: flex; justify-content: space-between; align-items: center; }
    .music-title { color: #fff; font-size: 12px; font-weight: 600; }
    .music-artist { color: rgba(255,255,255,0.5); font-size: 10px; }
    
    .waveform { display: flex; align-items: center; gap: 1.5px; height: 16px; }
    .waveform-bar {
        width: 2.5px;
        height: 100%;
        background: #FC3C44;
        border-radius: 1px;
        animation: waveform 0.4s ease-in-out infinite;
    }
    
    .waveform.paused .waveform-bar { animation: none; transform: scaleY(0.3); }
    
    @keyframes waveform {
        0%, 100% { transform: scaleY(0.2); }
        50% { transform: scaleY(1); }
    }
    
    .progress-bar {
        position: relative;
        height: 3px;
        background: rgba(255,255,255,0.15);
        border-radius: 2px;
        margin-top: 6px;
        cursor: pointer;
        overflow: hidden;
    }
    
    .progress-fill {
        height: 100%;
        background: #fff;
        border-radius: 2px;
        transition: width 0.1s linear;
    }
    
    .progress-time {
        display: flex;
        justify-content: space-between;
        margin-top: 3px;
        font-size: 9px;
        color: rgba(255,255,255,0.4);
        font-variant-numeric: tabular-nums;
    }
    
    .music-controls { display: flex; align-items: center; gap: 2px; }
    
    .control-btn {
        background: none;
        border: none;
        padding: 4px;
        cursor: pointer;
        transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .control-btn:hover { transform: scale(1.15); }
    
    .play-btn {
        background: rgba(255,255,255,0.15);
        width: 30px;
        height: 30px;
        border-radius: 50%;
    }
    
    /* iMessage */
    .imessage-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        background: linear-gradient(180deg, #34C759 0%, #28A745 100%);
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 16px rgba(52,199,89,0.4);
    }
    
    .imessage-info { flex: 1; }
    .imessage-sender { color: rgba(255,255,255,0.45); font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 500; }
    .imessage-text { color: #fff; font-size: 12px; font-weight: 500; margin-top: 1px; }
    
    /* Timer */
    .timer-icon {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }
    
    .timer-icon.running {
        background: linear-gradient(135deg, #FF9F0A 0%, #FF6B00 100%);
        box-shadow: 0 4px 16px rgba(255,149,10,0.4);
    }
    
    .timer-icon.done {
        background: linear-gradient(135deg, #30D158 0%, #28A745 100%);
        box-shadow: 0 4px 16px rgba(48,209,88,0.4);
    }
    
    .timer-info { flex: 1; }
    .timer-time {
        font-size: 24px;
        font-weight: 300;
        font-variant-numeric: tabular-nums;
        letter-spacing: -0.5px;
        transition: color 0.3s ease;
    }
    
    .timer-time.running { color: #FF9F0A; }
    .timer-time.done { color: #30D158; }
    
    .timer-label { color: rgba(255,255,255,0.35); font-size: 10px; margin-top: -1px; }
    
    .timer-btn {
        padding: 6px 14px;
        border-radius: 16px;
        background: rgba(255,149,10,0.15);
        border: none;
        color: #FF9F0A;
        font-size: 12px;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.2s ease;
    }
    
    .timer-btn:hover { background: rgba(255,149,10,0.25); }
    
    /* Call */
    .call-avatar {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: linear-gradient(135deg, #BF5AF2 0%, #5E5CE6 100%);
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 4px 16px rgba(191,90,242,0.4);
        position: relative;
    }
    
    .call-avatar.small { width: 34px; height: 34px; }
    
    .call-pulse {
        position: absolute;
        inset: -4px;
        border-radius: 50%;
        border: 1.5px solid rgba(191,90,242,0.4);
        animation: callPulse 1.5s ease-out infinite;
    }
    
    @keyframes callPulse {
        0% { transform: scale(1); opacity: 1; }
        100% { transform: scale(1.5); opacity: 0; }
    }
    
    .call-info { flex: 1; }
    .call-type { color: rgba(255,255,255,0.45); font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 500; }
    .call-name { color: #fff; font-size: 14px; font-weight: 600; }
    .call-name.small { font-size: 13px; }
    .call-duration { color: #30D158; font-size: 11px; font-variant-numeric: tabular-nums; }
    
    .call-buttons { display: flex; gap: 8px; }
    
    .call-btn {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.2s ease;
    }
    
    .call-btn.small { width: 32px; height: 32px; }
    
    .call-btn.decline {
        background: #FF3B30;
        box-shadow: 0 4px 12px rgba(255,59,48,0.4);
    }
    
    .call-btn.accept {
        background: #30D158;
        box-shadow: 0 4px 12px rgba(48,209,88,0.4);
        animation: ringAnim 1s ease-in-out infinite, glowAnim 1.5s ease-in-out infinite;
    }
    
    @keyframes ringAnim {
        0%, 100% { transform: rotate(0deg); }
        25% { transform: rotate(15deg); }
        75% { transform: rotate(-15deg); }
    }
    
    @keyframes glowAnim {
        0%, 100% { box-shadow: 0 4px 12px rgba(48,209,88,0.4); }
        50% { box-shadow: 0 4px 24px rgba(48,209,88,0.7); }
    }
    
    .call-ended {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        height: 100%;
    }
    
    .call-ended-text { color: #FF3B30; font-size: 13px; font-weight: 500; }
    
    /* Control bar */
    .control-bar {
        position: absolute;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 6px 8px;
        background: rgba(0,0,0,0.6);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-radius: 14px;
        border: 1px solid rgba(255,255,255,0.1);
    }
    
    .state-btn {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 8px 12px;
        border-radius: 10px;
        border: none;
        cursor: pointer;
        transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
        color: rgba(255,255,255,0.5);
        background: transparent;
    }
    
    .state-btn:hover { 
        transform: translateY(-2px);
        background: rgba(255,255,255,0.08);
    }
    
    .state-btn.active { box-shadow: 0 4px 16px var(--btn-glow); }
    
    .state-btn[data-state="idle"].active { background: linear-gradient(135deg, #8E8E93ee, #8E8E93); color: #fff; --btn-glow: rgba(142,142,147,0.3); }
    .state-btn[data-state="music"].active { background: linear-gradient(135deg, #FC3C44ee, #FC3C44); color: #fff; --btn-glow: rgba(252,60,68,0.3); }
    .state-btn[data-state="imessage"].active { background: linear-gradient(135deg, #34C759ee, #34C759); color: #fff; --btn-glow: rgba(52,199,89,0.3); }
    .state-btn[data-state="timer"].active { background: linear-gradient(135deg, #FF9F0Aee, #FF9F0A); color: #fff; --btn-glow: rgba(255,149,10,0.3); }
    .state-btn[data-state="call"].active { background: linear-gradient(135deg, #30D158ee, #30D158); color: #fff; --btn-glow: rgba(48,209,88,0.3); }
    
    .state-label { font-size: 12px; font-weight: 500; display: none; }
    .state-btn.active .state-label { display: block; }
    
    /* Hero hint */
    .hero-hint {
        margin-top: 24px;
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 13px;
        color: var(--text-muted);
        animation: fadeIn 0.8s ease 0.5s both;
    }
    
    .hint-sparkle { font-size: 16px; }
    
    /* Features */
    .features {
        padding: 140px 40px;
        position: relative;
        z-index: 10;
    }
    
    .features-header {
        text-align: center;
        margin-bottom: 80px;
    }
    
    .features-label {
        font-size: 13px;
        font-weight: 700;
        letter-spacing: 2px;
        text-transform: uppercase;
        color: var(--text-muted);
        margin-bottom: 16px;
    }
    
    .features-title {
        font-size: clamp(36px, 5vw, 56px);
        font-weight: 800;
        letter-spacing: -1.5px;
        margin-bottom: 16px;
    }
    
    .features-subtitle {
        font-size: 17px;
        color: var(--text-secondary);
        max-width: 480px;
        margin: 0 auto;
        line-height: 1.7;
    }
    
    .features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        max-width: 1100px;
        margin: 0 auto;
    }
    
    .feature-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: 24px;
        padding: 40px 32px;
        position: relative;
        overflow: hidden;
        transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
        opacity: 0;
        transform: translateY(40px);
    }
    
    .feature-card.visible {
        opacity: 1;
        transform: translateY(0);
    }
    
    .feature-card:hover {
        border-color: var(--border-hover);
        background: rgba(255,255,255,0.04);
        transform: translateY(-12px) scale(1.02);
    }
    
    .feature-glow {
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 200px;
        height: 100px;
        background: radial-gradient(ellipse, rgba(255,255,255,0.1) 0%, transparent 70%);
        filter: blur(40px);
        opacity: 0;
        transition: opacity 0.5s ease;
        pointer-events: none;
    }
    
    .feature-card:hover .feature-glow { opacity: 1; }
    
    .feature-border {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .feature-card:hover .feature-border { opacity: 1; }
    
    .feature-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 24px;
        color: var(--text-secondary);
        transition: all 0.4s ease;
    }
    
    .feature-card:hover .feature-icon {
        transform: scale(1.1) rotate(-5deg);
        color: var(--text);
    }
    
    .feature-title {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 10px;
        letter-spacing: -0.3px;
    }
    
    .feature-description {
        font-size: 14px;
        color: var(--text-secondary);
        line-height: 1.7;
    }
    
    /* CTA */
    .cta {
        padding: 120px 40px;
        position: relative;
        z-index: 10;
    }
    
    .cta-box {
        max-width: 800px;
        margin: 0 auto;
        padding: 80px 60px;
        background: rgba(255,255,255,0.02);
        border: 1px solid var(--border);
        border-radius: 32px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }
    
    .cta-box::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    }
    
    .cta-glow {
        position: absolute;
        top: -100px;
        left: 50%;
        transform: translateX(-50%);
        width: 400px;
        height: 200px;
        background: radial-gradient(ellipse, rgba(255,255,255,0.05) 0%, transparent 70%);
        filter: blur(60px);
        pointer-events: none;
    }
    
    .cta-title {
        font-size: clamp(32px, 4vw, 48px);
        font-weight: 800;
        letter-spacing: -1px;
        margin-bottom: 16px;
    }
    
    .cta-subtitle {
        font-size: 17px;
        color: var(--text-secondary);
        margin-bottom: 32px;
    }
    
    .cta-price {
        font-size: 24px;
        font-weight: 700;
        margin-bottom: 24px;
    }
    
    .cta-price span {
        font-size: 14px;
        font-weight: 400;
        color: var(--text-secondary);
    }

    /* FAQ */
    .faq {
        padding: 140px 40px;
        position: relative;
        z-index: 10;
    }

    .faq-header {
        text-align: center;
        margin-bottom: 80px;
    }

    .faq-label {
        font-size: 13px;
        font-weight: 700;
        letter-spacing: 2px;
        text-transform: uppercase;
        color: var(--text-muted);
        margin-bottom: 16px;
    }

    .faq-title {
        font-size: clamp(36px, 5vw, 56px);
        font-weight: 800;
        letter-spacing: -1.5px;
        margin-bottom: 16px;
    }

    .faq-subtitle {
        font-size: 17px;
        color: var(--text-secondary);
        max-width: 480px;
        margin: 0 auto;
        line-height: 1.7;
    }

    .faq-container {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .faq-item {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: 20px;
        overflow: hidden;
        transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        opacity: 0;
        transform: translateY(30px);
    }

    .faq-item.visible {
        opacity: 1;
        transform: translateY(0);
    }

    .faq-item:hover {
        border-color: var(--border-hover);
        background: rgba(255,255,255,0.03);
    }

    [data-theme="light"] .faq-item:hover {
        background: rgba(0,0,0,0.03);
    }

    .faq-item.active {
        border-color: var(--border-hover);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 28px 32px;
        cursor: pointer;
        user-select: none;
        transition: all 0.3s ease;
    }

    .faq-question:hover {
        background: rgba(255,255,255,0.02);
    }

    [data-theme="light"] .faq-question:hover {
        background: rgba(0,0,0,0.02);
    }

    .faq-question-text {
        font-size: 18px;
        font-weight: 600;
        color: var(--text);
        letter-spacing: -0.3px;
        padding-right: 20px;
    }

    .faq-icon {
        flex-shrink: 0;
        width: 24px;
        height: 24px;
        border-radius: 50%;
        background: var(--bg-card);
        border: 1px solid var(--border);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .faq-item.active .faq-icon {
        transform: rotate(45deg);
        background: linear-gradient(135deg, #fff 0%, #e5e5e5 100%);
        border-color: transparent;
    }

    [data-theme="light"] .faq-item.active .faq-icon {
        background: linear-gradient(135deg, #000 0%, #333 100%);
    }

    .faq-icon svg {
        width: 12px;
        height: 12px;
        color: var(--text-secondary);
        transition: color 0.3s ease;
    }

    .faq-item.active .faq-icon svg {
        color: var(--bg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .faq-item.active .faq-answer {
        max-height: 500px;
    }

    .faq-answer-content {
        padding: 0 32px 28px 32px;
        color: var(--text-secondary);
        font-size: 15px;
        line-height: 1.8;
    }

    .faq-answer-content strong {
        color: var(--text);
        font-weight: 600;
    }

    /* Footer */
    footer {
        padding: 40px;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 16px;
        position: relative;
        z-index: 10;
    }
    
    .footer-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        color: var(--text);
    }

    .footer-logo .logo-text {
        color: var(--text);
    }

    .footer-text {
        font-size: 13px;
        color: var(--text-muted);
    }
    
    .footer-heart { color: #FF3B30; }
    
    /* Responsive */
    @media (max-width: 1100px) {
        .nav-links { gap: 16px; }
        .nav-link { font-size: 13px; }
        .btn-primary { padding: 10px 20px; font-size: 13px; }
    }

    @media (max-width: 900px) {
        .features-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
        .nav { padding: 12px 20px; }
        .nav-links { display: none; }
        .mobile-menu { display: block; }
        .hero { padding: 100px 20px 60px; }
        .hero-title { letter-spacing: -2px; }
        .hero-buttons { flex-direction: column; width: 100%; max-width: 300px; }
        .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
        .macbook-frame { border-radius: 12px; padding: 6px; }
        .features { padding: 80px 24px; }
        .features-grid { grid-template-columns: 1fr; }
        .feature-card { padding: 32px 24px; }
        .cta { padding: 80px 24px; }
        .cta-box { padding: 48px 28px; }
        .faq { padding: 80px 24px; }
        .faq-question { padding: 20px 24px; }
        .faq-question-text { font-size: 16px; }
        .faq-answer-content { padding: 0 24px 20px 24px; font-size: 14px; }
        .control-bar { display: none; }
    }