/* ====================================
   CSS Variables & Reset
   ==================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:wght@400;600;700;800&family=Manrope:wght@400;500;600;700&display=swap');

:root {
    /* Colors */
    --primary-color: #0EA5E9;
    --secondary-color: #14B8A6;
    --success-color: #22C55E;
    --warning-color: #F97316;
    --error-color: #EF4444;
    --background: #FFFFFF;
    --background-secondary: #F6F7F9;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --border-color: #D7DBE0;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-primary: 'Manrope', 'Segoe UI', sans-serif;
    --font-display: 'Fraunces', 'Georgia', serif;
    --font-mono: 'SF Mono', Monaco, 'Courier New', monospace;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.12);
    --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.16);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: var(--font-display);
    letter-spacing: -0.01em;
}

h4 {
    font-family: var(--font-primary);
    font-weight: 700;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ====================================
   Navigation
   ==================================== */

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
}

.brand-mark img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* ====================================
   Hero Section
   ==================================== */

.hero {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #0EA5E9 0%, #14B8A6 60%, #10B981 100%);
    color: white;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.btn {
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* App Store badge */
.app-store-button {
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-store-link {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
}

.app-icon {
    width: 96px;
    height: 96px;
    border-radius: 22px;
    box-shadow: var(--shadow-md);
}

.app-store-badge {
    height: 72px;
}

/* Privacy section */
.privacy {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-secondary);
}

.privacy .section-subtitle {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.privacy-card {
    max-width: 720px;
    margin: 0 auto;
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    font-size: 1.05rem;
}

/* ====================================
   Screenshot Frames
   ==================================== */

.screenshot-frame {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    text-align: center;
}

.screenshot-frame img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.screenshot-frame figcaption {
    margin-top: var(--spacing-xs);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.screenshot-frame.small {
    padding: var(--spacing-xs);
}

.screenshot-frame.small img {
    max-height: 220px;
    object-fit: cover;
}

.screenshot-frame.small figcaption {
    display: none;
}

/* ====================================
   Overview Section
   ==================================== */

.overview {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-secondary);
}

.overview h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.overview-card {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
}

.overview-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.overview-card .icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.overview-card h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.overview-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ====================================
   Scenario Section
   ==================================== */

.scenario {
    padding: var(--spacing-xl) 0;
}

.scenario h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.content-collapsible {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--background-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
}

.content-collapsible > summary {
    list-style: none;
    cursor: pointer;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.content-collapsible > summary::-webkit-details-marker {
    display: none;
}

.content-collapsible > summary::after {
    content: "Show";
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.content-collapsible[open] > summary::after {
    content: "Hide";
}

.content-collapsible > :not(summary) {
    margin-top: var(--spacing-md);
}

.scenario-story {
    margin-bottom: var(--spacing-lg);
}

.scenario-story > h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.scenario-story-summary {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.scenario-story + .scenario-story {
    margin-top: var(--spacing-lg);
}

.scenario-steps {
    max-width: 900px;
    margin: 0 auto;
}

.scenario-step {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.scenario-step::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 60px;
    bottom: -40px;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
}

.scenario-step:last-of-type::before {
    display: none;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.step-content {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.advanced-planning {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.advanced-planning .section-subtitle {
    margin-bottom: var(--spacing-md);
}

.advanced-planning .planning-feature {
    margin-bottom: var(--spacing-md);
}

.advanced-planning .planning-feature:last-child {
    margin-bottom: 0;
}

.advanced-planning .section-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-md) 0;
}

.step-details {
    background: var(--background-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin: var(--spacing-sm) 0;
}

.step-details h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-size: 1rem;
}

.step-details ul {
    list-style: none;
    padding-left: 0;
}

.step-details li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

.step-details strong {
    color: var(--text-primary);
}

.scenario-result {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-lg);
    text-align: center;
}

.scenario-result h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.stat {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.result-quote {
    font-size: 1.125rem;
    font-style: italic;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
    padding: var(--spacing-md);
    border-left: 4px solid white;
}

/* ====================================
   Features Section
   ==================================== */

.features {
    padding: var(--spacing-lg) 0 var(--spacing-xl);
    background-color: var(--background-secondary);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-category {
    margin-bottom: var(--spacing-lg);
}

.feature-category h3,
.category-heading {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.category-collapsible {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: white;
    padding: var(--spacing-sm) var(--spacing-md);
}

.category-collapsible > summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.category-collapsible > summary::-webkit-details-marker {
    display: none;
}

.category-collapsible > summary .category-heading {
    margin-bottom: 0;
    font-weight: 700;
}

.category-collapsible > summary::after {
    content: "Expand";
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.category-collapsible[open] > summary::after {
    content: "Collapse";
}

.category-collapsible > :not(summary) {
    margin-top: var(--spacing-md);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.feature-item {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-item h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ====================================
   Premium Section
   ==================================== */

.premium {
    padding: var(--spacing-xl) 0;
}

.premium h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.premium-quick-compare {
    display: grid;
    grid-template-columns: repeat(4, minmax(180px, 1fr));
    gap: 1.25rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.quick-compare-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
}

.quick-compare-card h3 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.625rem;
}

.quick-compare-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.quick-compare-card p:last-child {
    margin-bottom: 0;
}

.quick-compare-card.highlight {
    border: 2px solid var(--success-color);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, rgba(14, 165, 233, 0.08) 100%);
}

.premium-tiers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
    margin-top: var(--spacing-md);
}

.premium-tier {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    border: 2px solid var(--border-color);
}

.premium-tier.featured {
    border: 3px solid var(--primary-color);
    transform: scale(1.02);
}


.premium-tier.lifetime {
    border: 3px solid var(--success-color);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, rgba(14, 165, 233, 0.06) 100%);
}

.premium-tier.lifetime .btn-secondary {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background: rgba(255, 255, 255, 0.88);
}

.premium-tier.lifetime .btn-secondary:hover {
    background: white;
}

.tier-badge.deal {
    background: var(--success-color);
}

.tier-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.premium-tier h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.tier-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.5;
}

.tier-features {
    margin-bottom: 1.5rem;
}

.tier-features h4 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.tier-features ul {
    list-style: none;
    padding-left: 0;
}

.tier-features li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.tier-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.tier-features strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.tier-features p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.premium-tier .screenshot-frame {
    margin-bottom: 1.5rem;
}

.planning-feature .feature-badge {
    display: inline-block;
    margin-left: 0.5rem;
    padding: 0.2rem 0.5rem;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: white;
    background: var(--primary-color);
    border-radius: 999px;
    vertical-align: middle;
}

.subscription-options {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.subscription-option {
    flex: 1;
    background: var(--background-secondary);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    text-align: center;
    position: relative;
}

.subscription-option.recommended {
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    border: 2px solid var(--primary-color);
}

.recommended-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.period {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ====================================
   Download Section
   ==================================== */

.download {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 60%, #10B981 100%);
    color: white;
    text-align: center;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.download-content {
    max-width: 800px;
    margin: var(--spacing-lg) auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.download-features {
    text-align: left;
}

.check-item {
    padding: var(--spacing-xs) 0;
    font-size: 1.05rem;
    opacity: 0.95;
}

.app-store-button {
    display: flex;
    justify-content: center;
    align-items: center;
}

.requirements {
    max-width: 700px;
    margin: var(--spacing-md) auto 0;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.requirements h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.requirements p {
    font-size: 0.9rem;
    opacity: 0.85;
}

/* ====================================
   Footer
   ==================================== */

.footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    opacity: 0.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    display: block;
    padding: 0.25rem 0;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    opacity: 0.7;
}

.mobile-sticky-cta {
    display: none;
}

/* ====================================
   Responsive Design
   ==================================== */

@media (min-width: 769px) {
    .scenario .step-content .screenshot-frame {
        max-width: 30%;
    }

    .advanced-planning .planning-content .screenshot-frame {
        max-width: 30%;
    }
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .btn {
        width: 100%;
    }

    .nav-menu {
        display: none;
    }

    .download-content {
        grid-template-columns: 1fr;
    }

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

    .premium-tiers {
        grid-template-columns: 1fr;
    }

    .premium-tier.featured {
        transform: none;
    }

    .premium-quick-compare {
        grid-template-columns: 1fr 1fr;
    }

    .scenario-step {
        grid-template-columns: 1fr;
    }

    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    .scenario-step::before {
        display: none;
    }

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

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

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

    .mobile-sticky-cta {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 1200;
        padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom));
        background: rgba(15, 23, 42, 0.9);
        backdrop-filter: blur(8px);
        transform: translateY(100%);
        transition: transform 0.25s ease;
    }

    .mobile-sticky-cta .btn {
        display: block;
        width: 100%;
        text-align: center;
    }

    .mobile-sticky-cta.visible {
        transform: translateY(0);
    }

    body {
        padding-bottom: 84px;
    }
}

/* ====================================
   ML Features Section
   ==================================== */

.ml-features {
    background: linear-gradient(135deg, #0EA5E9 0%, #14B8A6 100%);
    color: white;
    padding: var(--spacing-xl) var(--spacing-md);
}

.ml-features h2,
.ml-features .section-subtitle {
    color: white;
}

.ml-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.ml-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: transform 0.3s ease, background 0.3s ease;
}

.ml-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.ml-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.ml-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.ml-card p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    opacity: 0.95;
}

.ml-features-list {
    list-style: none;
    padding: 0;
}

.ml-features-list li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
    opacity: 0.9;
}

.ml-features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* ====================================
   AI Category in Features
   ==================================== */

.ai-category {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05) 0%, rgba(20, 184, 166, 0.05) 100%);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.category-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.tech-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

/* ====================================
   Privacy Grid
   ==================================== */

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.privacy-grid .privacy-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.privacy-grid .privacy-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.privacy-grid .privacy-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.privacy-grid .privacy-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ====================================
   Technical Highlights Section
   ==================================== */

.technical-highlights {
    background: var(--background-secondary);
    padding: var(--spacing-xl) var(--spacing-md);
}

.technical-highlights h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.tech-item {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.tech-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.tech-item h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.tech-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    h2 {
        font-size: 1.75rem;
    }

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

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

/* ====================================
   iPad Features Section
   ==================================== */

.ipad-features {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #F6F7F9 0%, #FFFFFF 100%);
}

.ipad-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.ipad-features .section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.ipad-showcase-wrap {
    position: relative;
}

.ipad-showcase-wrap::before,
.ipad-showcase-wrap::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: var(--spacing-sm);
    width: 54px;
    z-index: 2;
    pointer-events: none;
}

.ipad-showcase-wrap::before {
    left: 0;
    background: linear-gradient(90deg, #f7f8fa 0%, rgba(247, 248, 250, 0) 100%);
}

.ipad-showcase-wrap::after {
    right: 0;
    background: linear-gradient(270deg, #f7f8fa 0%, rgba(247, 248, 250, 0) 100%);
}

.ipad-showcase {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.ipad-feature-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    flex: 0 0 min(94%, 1080px);
    scroll-snap-align: start;
    padding: var(--spacing-lg);
    background: var(--background);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.ipad-feature-highlight.reverse {
    grid-template-columns: 1fr 1fr;
}

.ipad-feature-highlight.reverse .ipad-feature-content {
    order: 2;
}

.ipad-feature-highlight.reverse .screenshot-frame {
    order: 1;
}

.ipad-feature-content .feature-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ipad-feature-content h3 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.ipad-feature-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.ipad-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ipad-feature-list li {
    padding: var(--spacing-sm) 0;
    padding-left: 32px;
    position: relative;
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.ipad-feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.2rem;
}

.ipad-feature-list li strong {
    color: var(--text-primary);
    font-weight: 600;
}

.ipad-summary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    color: white;
    text-align: center;
}

.ipad-summary h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.ipad-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.ipad-summary-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.ipad-summary-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.ipad-summary-card p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 968px) {
    .ipad-feature-highlight,
    .ipad-feature-highlight.reverse {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .ipad-feature-highlight.reverse .ipad-feature-content,
    .ipad-feature-highlight.reverse .screenshot-frame {
        order: initial;
    }

    .ipad-feature-content h3 {
        font-size: 1.75rem;
    }

    .ipad-summary-grid {
        grid-template-columns: 1fr;
    }

    .ipad-showcase-wrap::before,
    .ipad-showcase-wrap::after {
        display: none;
    }
}