:root {
    /* Seamless Canvas Palette */
    --bg-color: #E8EFF2; /* Matches the posters' approx light background */
    --text-primary: #111A22;
    --text-secondary: rgba(17, 26, 34, 0.6);
    --text-tertiary: rgba(17, 26, 34, 0.4);
    --btn-bg: #000000;
    --btn-text: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
    :root {
        /* If dark mode is enforced, we try a deep cinematic canvas */
        --bg-color: #0A0D12;
        --text-primary: #FFFFFF;
        --text-secondary: rgba(255, 255, 255, 0.6);
        --text-tertiary: rgba(255, 255, 255, 0.4);
        --btn-bg: #FFFFFF;
        --btn-text: #000000;
    }
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

/* Typography & Core */
h1, h2, h3 { font-weight: 800; letter-spacing: -0.03em; margin-bottom: 16px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.bg-light { background-color: #F8F9FA; border-top: 1px solid #EAEAEA; border-bottom: 1px solid #EAEAEA; }
.text-center { text-align: center; }

@media (prefers-color-scheme: dark) {
    .bg-light { background-color: #121A22; border-color: #22303D; }
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s, opacity 0.2s;
    box-shadow: 0 4px 14px rgba(0,0,0,0.1);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
.btn-large { padding: 16px 36px; font-size: 1.1rem; }

/* Navbar */
.navbar {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    background: rgba(232, 239, 242, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
@media (prefers-color-scheme: dark) {
    .navbar { background: rgba(10, 13, 18, 0.8); border-bottom: 1px solid rgba(255,255,255,0.05); }
}
.nav-container { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; padding: 16px 24px; }
.nav-brand { display: flex; align-items: center; gap: 12px; }
.nav-logo { width: 32px; height: 32px; border-radius: 8px; }
.nav-name { font-weight: 700; font-size: 1.25rem; }

/* Hero Section */
.hero-section { padding: 160px 0 80px; }
.hero-container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.pill-badge { display: inline-block; padding: 6px 12px; background: rgba(0,122,255,0.1); color: #007AFF; font-weight: 600; font-size: 0.875rem; border-radius: 999px; margin-bottom: 24px; }
@media (prefers-color-scheme: dark) { .pill-badge { color: #378ADD; } }
.hero-title { font-size: 3.8rem; line-height: 1.1; }
.hero-subtitle { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 40px; max-width: 480px; line-height: 1.6; }
.hero-actions { margin-bottom: 32px; }
.social-proof { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; font-weight: 500; }
.stars { color: #FF9500; letter-spacing: 2px; }
.hero-mockup { width: 100%; max-width: 500px; border-radius: 36px; filter: drop-shadow(0 30px 60px rgba(0,0,0,0.15)); }

/* Z-pattern Feature Split */
.feature-split { padding: 120px 0; overflow: hidden; }
.split-container { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.split-container.reverse .split-text { order: 2; }
.split-container.reverse .split-visual { order: 1; justify-content: flex-start; }
.section-title { font-size: 2.5rem; line-height: 1.2; }
.section-desc { font-size: 1.125rem; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.6; }
.split-visual { display: flex; justify-content: flex-end; perspective: 1000px; }
.feature-mockup { width: 100%; max-width: 450px; border-radius: 32px; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.12)); transform-style: preserve-3d; will-change: transform; transition: transform 0.1s; }
.benefit-list { list-style: none; display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
.benefit-list li { display: flex; align-items: center; gap: 12px; font-weight: 500; font-size: 1.05rem; color: var(--text-primary); }
.benefit-list svg { color: #34C759; width: 24px; height: 24px; flex-shrink: 0; }

/* Bento Section */
.bento-section { padding: 120px 0; }
.bento-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.bento-card { display: flex; flex-direction: column; align-items: center; }
.bento-img { width: 100%; max-width: 300px; border-radius: 24px; filter: drop-shadow(0 15px 30px rgba(0,0,0,0.1)); margin-bottom: 24px; transform-style: preserve-3d; }

/* Final CTA */
.cta-section { padding: 120px 0; background-color: var(--text-primary); color: var(--bg-color); }
.cta-title { font-size: 3rem; margin-bottom: 24px; }
.cta-desc { font-size: 1.25rem; opacity: 0.8; margin: 0 auto 40px; max-width: 600px; }
.cta-section .btn-primary { background-color: var(--bg-color); color: var(--text-primary); }

/* Footer */
.footer { padding: 60px 0; border-top: 1px solid rgba(0,0,0,0.05); }
@media (prefers-color-scheme: dark) { .footer { border-color: rgba(255,255,255,0.05); } }
.flex-footer { display: flex; justify-content: space-between; align-items: center; color: var(--text-tertiary); font-size: 0.875rem; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; }
.footer-links a:hover { color: var(--text-primary); }

/* Responsive */
@media (max-width: 900px) {
    .hero-container, .split-container { grid-template-columns: 1fr; gap: 50px; text-align: center; }
    .split-container.reverse .split-text { order: 1; }
    .split-container.reverse .split-visual { order: 2; justify-content: center; }
    .split-visual { justify-content: center; }
    .hero-title { font-size: 3rem; }
    .benefit-list li { justify-content: center; }
    .bento-grid { grid-template-columns: 1fr; gap: 60px; }
    .flex-footer { flex-direction: column; gap: 24px; }
}

/* Base Animations */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }