:root {
    --emerald: #059669;
    --emerald-light: #10b981;
    --emerald-dark: #047857;
    --bg: #0a0a0a;
    --surface: #141414;
    --surface-2: #1e1e1e;
    --text: #fafafa;
    --text-secondary: #a1a1aa;
    --border: #27272a;
    --radius: 16px;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Nav */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(10,10,10,0.8);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}
.logo-icon { font-size: 28px; }
.logo-text { font-size: 20px; font-weight: 800; letter-spacing: -0.02em; }
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 16px 32px; font-size: 16px; border-radius: 14px; }
.btn-primary {
    background: var(--emerald);
    color: white;
}
.btn-primary:hover {
    background: var(--emerald-light);
    transform: translateY(-1px);
    box-shadow: 0 8px 30px rgba(5, 150, 105, 0.3);
}
.nav-links .btn {
    background: var(--emerald);
    color: white;
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(135deg, var(--emerald-light), #34d399, #6ee7b7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Hero */
.hero {
    max-width: 800px;
    margin: 0 auto;
    padding: 160px 24px 100px;
    text-align: center;
}
.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--emerald-light);
    margin-bottom: 32px;
}
.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}
.hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
}
.hero-cta { margin-bottom: 16px; }
.hero-note {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Features */
.features, .how-it-works, .depths {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 24px;
}
.features h2, .how-it-works h2, .depths h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.02em;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: all 0.3s;
}
.feature-card:hover {
    border-color: var(--emerald);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.feature-icon {
    font-size: 36px;
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Steps */
.steps {
    display: flex;
    gap: 48px;
    justify-content: center;
}
.step {
    text-align: center;
    max-width: 280px;
}
.step-num {
    width: 48px; height: 48px;
    background: var(--emerald);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
    margin: 0 auto 20px;
}
.step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.step p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Depths */
.depth-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}
.depth-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}
.depth-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.depth-card.featured {
    border-color: var(--emerald);
    background: linear-gradient(180deg, rgba(5,150,105,0.08), var(--surface));
    transform: scale(1.05);
}
.depth-card.featured:hover { transform: scale(1.05) translateY(-4px); }
.depth-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--emerald);
    color: white;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
}
.depth-icon { font-size: 48px; margin-bottom: 16px; }
.depth-card h3 { font-size: 24px; font-weight: 800; margin-bottom: 4px; }
.depth-time {
    font-size: 14px;
    color: var(--emerald-light);
    font-weight: 600;
    margin-bottom: 12px;
}
.depth-card p:last-child {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA */
.cta-section {
    text-align: center;
    padding: 100px 24px;
    background: linear-gradient(180deg, transparent, rgba(5,150,105,0.05));
}
.cta-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    margin-bottom: 16px;
}
.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 18px;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 40px 24px;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.footer-copy {
    width: 100%;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
}
.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 768px) {
    .nav-links a:not(.btn) { display: none; }
    .feature-grid, .depth-grid { grid-template-columns: 1fr; }
    .depth-card.featured { transform: none; }
    .depth-card.featured:hover { transform: translateY(-4px); }
    .steps { flex-direction: column; align-items: center; }
    .footer-inner { flex-direction: column; gap: 24px; text-align: center; }
    .footer-brand { justify-content: center; }
    .footer-links { flex-wrap: wrap; justify-content: center; }
}