/* Apple Keynote High-End Style */
:root {
    --apple-bg: #000000;
    --apple-text: #f5f5f7;
    --apple-muted: #86868b;
    --apple-card: #1d1d1f;
    --apple-accent: #2997ff;
    --apple-accent-hover: #0071e3;
    --font-main: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--apple-bg);
    color: var(--apple-text);
    font-family: var(--font-main);
    line-height: 1.4;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Buttons */
.btn-apple {
    display: inline-block;
    padding: 12px 24px;
    font-size: 17px;
    font-weight: 400;
    border-radius: 30px;
    background: rgba(255,255,255,0.1);
    color: var(--apple-text);
    transition: all 0.3s;
    cursor: pointer;
}
.btn-apple:hover {
    background: rgba(255,255,255,0.2);
}
.btn-apple.primary {
    background: var(--apple-text);
    color: var(--apple-bg);
}
.btn-apple.primary:hover {
    background: #e8e8ed;
}
.btn-apple.blue {
    background: var(--apple-accent);
    color: #fff;
}
.btn-apple.blue:hover {
    background: var(--apple-accent-hover);
}

/* 1. Global Navigation */
.apple-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 48px;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.nav-container {
    width: 100%;
    max-width: 1000px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}
.nav-brand {
    font-size: 18px;
    font-weight: 600;
    color: var(--apple-text);
}
.nav-links {
    display: flex;
    gap: 30px;
}
.nav-links a {
    font-size: 12px;
    color: #f5f5f7;
    opacity: 0.8;
}
.nav-links a:hover, .nav-links a.active {
    opacity: 1;
}

/* 2. Hero Section (Keynote Reveal) */
.keynote-hero {
    padding-top: 150px;
    text-align: center;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.hero-title {
    font-size: 80px;
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #ffb6ff, #b344ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.04em;
}
.hero-subtitle {
    font-size: 28px;
    font-weight: 400;
    color: var(--apple-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}
.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 40px;
}
.trust-text {
    font-size: 14px;
    color: var(--apple-muted);
    display: flex;
    gap: 20px;
    justify-content: center;
}
.hero-image-container {
    margin-top: 60px;
    width: 100%;
    max-width: 1200px;
    position: relative;
}
.hero-image-container img {
    width: 100%;
    border-radius: 20px;
    mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
}

/* 3. Summary Grid (Metrics) */
.summary-grid {
    max-width: 1200px;
    margin: 100px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.summary-card {
    background: var(--apple-card);
    border-radius: 30px;
    padding: 60px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 300px;
}
.summary-card.large {
    grid-column: span 2;
}
.s-val {
    font-size: 80px;
    font-weight: 700;
    background: linear-gradient(180deg, #fff, #888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
    letter-spacing: -0.04em;
}
.s-lbl {
    font-size: 24px;
    font-weight: 600;
    color: var(--apple-muted);
}

/* 4. Features (Full Width Sections) */
.feature-section {
    padding: 150px 20px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.feat-content {
    max-width: 800px;
    margin: 0 auto 60px;
}
.feat-content h2 {
    font-size: 56px;
    margin-bottom: 20px;
}
.feat-content p {
    font-size: 24px;
    color: var(--apple-muted);
}
.feat-image {
    max-width: 1000px;
    margin: 0 auto;
}
.feat-image img {
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
}

/* 5. Nodes (Horizontal Scroll Carousel) */
.nodes-carousel {
    padding: 100px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    overflow: hidden;
}
.nodes-carousel h2 {
    font-size: 48px;
    text-align: center;
    margin-bottom: 60px;
}
.carousel-track {
    display: flex;
    gap: 20px;
    padding: 0 5vw;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.node-card {
    flex: 0 0 300px;
    height: 400px;
    background: var(--apple-card);
    border-radius: 30px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    scroll-snap-align: center;
    position: relative;
    overflow: hidden;
}
.node-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.8));
    z-index: 1;
}
.node-info {
    position: relative;
    z-index: 2;
}
.node-info h3 { font-size: 32px; margin-bottom: 5px; }
.node-info p { font-size: 18px; color: var(--apple-accent); font-weight: 600; }

/* 6. Reviews (Minimal Grid) */
.reviews-section {
    padding: 150px 20px;
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.reviews-section h2 {
    font-size: 48px;
    text-align: center;
    margin-bottom: 80px;
}
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.review-item {
    background: var(--apple-card);
    padding: 40px;
    border-radius: 20px;
}
.r-stars { color: #f5f5f7; font-size: 20px; margin-bottom: 20px; letter-spacing: 2px; }
.r-text { font-size: 18px; line-height: 1.5; margin-bottom: 30px; color: #d2d2d7; }
.r-user { font-size: 14px; font-weight: 600; color: var(--apple-muted); }

/* 7. Pricing (Clean Cards) */
.pricing-section {
    padding: 150px 20px;
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.pricing-section h2 {
    font-size: 56px;
    text-align: center;
    margin-bottom: 80px;
}
.price-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.price-card {
    background: var(--apple-card);
    border-radius: 30px;
    padding: 50px 40px;
    display: flex;
    flex-direction: column;
}
.price-card.recommended {
    border: 2px solid var(--apple-accent);
    transform: scale(1.02);
}
.p-title { font-size: 24px; font-weight: 600; margin-bottom: 10px; }
.p-price { font-size: 64px; font-weight: 700; margin-bottom: 30px; letter-spacing: -0.04em; }
.p-price span { font-size: 20px; color: var(--apple-muted); font-weight: 400; }
.p-features { list-style: none; margin-bottom: 40px; flex: 1; }
.p-features li { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 16px; color: #d2d2d7; }

/* 8. FAQ & Footer */
.faq-section {
    padding: 150px 20px;
    max-width: 800px;
    margin: 0 auto;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.faq-section h2 { font-size: 48px; text-align: center; margin-bottom: 60px; }
.faq-item {
    padding: 30px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.faq-q { font-size: 24px; font-weight: 600; margin-bottom: 15px; }
.faq-a { font-size: 18px; color: var(--apple-muted); line-height: 1.5; }

.apple-footer {
    background: #111111;
    padding: 40px 20px;
    font-size: 12px;
    color: var(--apple-muted);
}
.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-links {
    display: flex;
    gap: 20px;
}
.footer-links a:hover { color: var(--apple-text); }

/* Subpages */
.sub-hero {
    padding-top: 150px;
    padding-bottom: 80px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sub-hero h1 { font-size: 64px; margin-bottom: 20px; }
.sub-hero p { font-size: 24px; color: var(--apple-muted); }

.dl-grid {
    max-width: 1000px;
    margin: 80px auto 150px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    padding: 0 20px;
}
.dl-card {
    background: var(--apple-card);
    border-radius: 30px;
    padding: 50px;
    text-align: center;
}
.dl-icon { font-size: 64px; margin-bottom: 20px; }
.dl-card h3 { font-size: 28px; margin-bottom: 10px; }
.dl-card p { font-size: 16px; color: var(--apple-muted); margin-bottom: 30px; }

.help-container {
    max-width: 1000px;
    margin: 80px auto 150px;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 60px;
    padding: 0 20px;
}
.help-nav {
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.help-nav a { font-size: 16px; color: var(--apple-muted); }
.help-nav a.active { color: var(--apple-text); font-weight: 600; }
.help-content h2 { font-size: 40px; margin-bottom: 40px; }
.help-sec { margin-bottom: 60px; }
.help-sec h3 { font-size: 24px; margin-bottom: 20px; }
.help-sec p, .help-sec li { font-size: 18px; color: var(--apple-muted); margin-bottom: 15px; line-height: 1.6; }
.help-sec ul { padding-left: 20px; }

/* Responsive */
@media (max-width: 1024px) {
    .summary-grid { grid-template-columns: 1fr; }
    .summary-card.large { grid-column: span 1; }
    .price-grid { grid-template-columns: 1fr; }
    .price-card.recommended { transform: none; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-title { font-size: 48px; }
    .hero-subtitle { font-size: 20px; }
    .feat-content h2 { font-size: 36px; }
    .feat-content p { font-size: 18px; }
    .review-grid { grid-template-columns: 1fr; }
    .dl-grid { grid-template-columns: 1fr; }
    .help-container { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; gap: 20px; text-align: center; }
}