/* Landing page system — shares tokens with the main site. */
@import "./tokens/fonts.css";
@import "./tokens/colors.css";
@import "./tokens/typography.css";
@import "./tokens/spacing.css";
@import "./tokens/effects.css";

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font-body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
::selection { background: var(--accent); color: var(--on-accent); }

.lp-bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; background: var(--bg); }
.lp-bg::before { content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--grid-color) 1px, transparent 1px), linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(120% 75% at 50% 0%, #000 35%, transparent 80%);
  mask-image: radial-gradient(120% 75% at 50% 0%, #000 35%, transparent 80%); }
.lp-bg::after { content: ""; position: absolute; width: 50vw; height: 50vw; left: -10vw; top: -12vw; border-radius: 50%;
  background: radial-gradient(circle, oklch(0.6 0.18 40 / 0.4), transparent 65%); filter: blur(70px); }

.lp-shell { position: relative; z-index: 1; }
.lp-wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }

/* Nav */
.lp-nav { position: sticky; top: 0; z-index: 50; background: oklch(0.155 0.032 40 / 0.85); backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
.lp-nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.lp-brand { display: inline-flex; align-items: center; gap: 0.6em; text-decoration: none; }
.lp-brand img { width: 34px; height: 34px; border-radius: 50%; border: 1.5px solid var(--border-accent); object-fit: cover; }
.lp-brand span { font-family: var(--font-display); font-weight: 700; font-size: 0.92rem; color: var(--text); }
.lp-nav-links { display: flex; align-items: center; gap: 1.6rem; }
.lp-nav-links a { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-dim); text-decoration: none; }
.lp-nav-links a:hover { color: var(--accent-bright); }

/* Buttons */
.lp-btn { display: inline-flex; align-items: center; gap: 0.6em; font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; text-decoration: none; padding: 0.95rem 1.7rem; border-radius: var(--radius-pill); transition: all var(--dur) var(--ease-out); cursor: pointer; border: none; }
.lp-btn-primary { background: var(--grad-accent); color: var(--on-accent); box-shadow: var(--glow-sm); }
.lp-btn-primary:hover { box-shadow: var(--glow-md); transform: translateY(-1px); }
.lp-btn-ghost { border: 1px solid var(--border-strong); color: var(--text-dim); background: transparent; }
.lp-btn-ghost:hover { border-color: var(--border-accent); color: var(--accent-bright); }
.lp-btn-sm { padding: 0.6rem 1.2rem; font-size: 0.7rem; }

/* Hero */
.lp-hero { padding: clamp(4rem, 9vw, 7rem) 0 clamp(3rem, 6vw, 5rem); }
.lp-label { display: inline-flex; align-items: center; gap: 0.65em; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); padding: 0.45rem 0.95rem; border-radius: var(--radius-pill); border: 1px solid var(--border-accent); background: var(--accent-wash-soft); }
.lp-label::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.lp-hero h1 { margin: 1.2rem 0 0; font-family: var(--font-display); font-weight: 800; font-size: clamp(2.2rem, 4.5vw, 3.8rem); line-height: 1.06; letter-spacing: -0.02em; color: var(--text-strong); max-width: 18ch; }
.lp-hero h1 em { font-style: normal; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lp-hero p.lead { margin: 1.4rem 0 0; font-size: var(--fs-lead); line-height: 1.65; color: var(--text-dim); max-width: 56ch; }
.lp-hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; }

/* Sections */
.lp-section { padding: clamp(3rem, 6vw, 5rem) 0; border-top: 1px solid var(--border); }
.lp-section.deep { background: var(--bg-deep); }
.lp-kicker { font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); }
.lp-section h2 { margin: 0.8rem 0 0; font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 3vw, 2.4rem); line-height: 1.1; letter-spacing: -0.015em; color: var(--text-strong); max-width: 24ch; }
.lp-section p.sub { margin: 1rem 0 0; font-size: 1.02rem; line-height: 1.7; color: var(--text-dim); max-width: 62ch; }

/* Card grid */
.lp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; margin-top: 2.4rem; }
.lp-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.lp-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.lp-card { display: flex; flex-direction: column; gap: 0.7rem; padding: 1.6rem 1.45rem; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface-card); transition: all var(--dur) var(--ease-out); }
.lp-card:hover { border-color: var(--border-accent); box-shadow: var(--glow-sm); transform: translateY(-3px); }
.lp-card h3 { margin: 0; font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; color: var(--text-strong); }
.lp-card p { margin: 0; font-size: 0.88rem; line-height: 1.6; color: var(--text-dim); }
.lp-card .num { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; color: var(--accent); }

/* Checklist */
.lp-check { list-style: none; margin: 1.6rem 0 0; padding: 0; display: flex; flex-direction: column; gap: 0.7rem; max-width: 60ch; }
.lp-check li { display: flex; gap: 0.7em; font-size: 0.98rem; line-height: 1.55; color: var(--text-body); }
.lp-check li::before { content: "✓"; color: var(--accent-bright); font-weight: 700; flex: none; }

/* Stat band */
.lp-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; margin-top: 2.4rem; }
.lp-stat { padding: 1.5rem; border-radius: var(--radius-lg); border: 1px solid var(--border); background: var(--surface-card); }
.lp-stat .big { display: block; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.02em; background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lp-stat .lab { display: block; margin-top: 0.3rem; font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-mute); }

/* CTA band */
.lp-cta-band { margin: clamp(3rem, 6vw, 5rem) auto; padding: clamp(2rem, 5vw, 3.2rem); border-radius: var(--radius-xl); border: 1px solid var(--border-accent); background: var(--surface-card); box-shadow: var(--glow-md); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.6rem; position: relative; overflow: hidden; }
.lp-cta-band::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(600px 300px at 12% 0%, var(--accent-wash), transparent 70%); }
.lp-cta-band h2 { position: relative; margin: 0; font-family: var(--font-display); font-weight: 800; font-size: clamp(1.4rem, 2.6vw, 2rem); line-height: 1.15; color: var(--text-strong); max-width: 22ch; }
.lp-cta-band p { position: relative; margin: 0.7rem 0 0; font-size: 0.95rem; line-height: 1.6; color: var(--text-dim); max-width: 48ch; }

/* Prose (resources articles) */
.lp-prose { max-width: 70ch; }
.lp-prose h3 { margin: 2.2rem 0 0; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; color: var(--text-strong); }
.lp-prose p { margin: 0.9rem 0 0; font-size: 1rem; line-height: 1.75; color: var(--text-body); }
.lp-prose ul { margin: 0.9rem 0 0; padding-left: 1.2em; color: var(--text-body); line-height: 1.7; }

/* Footer */
.lp-footer { border-top: 1px solid var(--border); background: var(--bg-void); margin-top: clamp(3rem, 6vw, 5rem); }
.lp-footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding: 1.8rem var(--gutter); font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-faint); }
.lp-footer-inner a { color: var(--text-dim); text-decoration: none; margin-left: 1.2rem; }
.lp-footer-inner a:hover { color: var(--accent-bright); }

/* Calculator */
.lp-calc { max-width: 720px; margin: 2.4rem auto 0; padding: clamp(1.6rem, 4vw, 2.6rem); border-radius: var(--radius-xl); border: 1px solid var(--border-strong); background: var(--surface-card); }
.lp-field { display: flex; flex-direction: column; gap: 0.45rem; margin-top: 1.2rem; }
.lp-field label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); }
.lp-field input, .lp-field select { font-family: var(--font-body); font-size: 1rem; color: var(--text-strong); background: var(--surface-inset); border: 1px solid var(--border-strong); border-radius: var(--radius-md); padding: 0.8rem 1rem; outline: none; transition: border-color var(--dur); }
.lp-field input:focus, .lp-field select:focus { border-color: var(--border-accent); }
.lp-result { margin-top: 1.8rem; padding: 1.6rem; border-radius: var(--radius-lg); border: 1px solid var(--border-accent); background: var(--accent-wash-soft); display: none; }
.lp-result.show { display: block; }
.lp-result .big { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.8rem, 4vw, 2.6rem); background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Responsive */
@media (max-width: 900px) {
  .lp-grid, .lp-grid.cols-4 { grid-template-columns: 1fr 1fr; }
  .lp-stats { grid-template-columns: 1fr; }
  .lp-nav-links { display: none; }
}
@media (max-width: 600px) {
  .lp-grid, .lp-grid.cols-2, .lp-grid.cols-4 { grid-template-columns: 1fr; }
}