:root {
  --bg: #FAF8F4;
  --bg-alt: #F1EDE5;
  --surface: #FFFFFF;
  --ink: #0F1B2D;
  --ink-soft: #4A5568;
  --line: #E2DCD0;
  --accent: #E8743B;
  --accent-ink: #FFFFFF;
  --oikana-sun: #F2B705;
  --radius: 20px;
  --shadow: 0 1px 2px rgba(15, 27, 45, .04), 0 8px 24px rgba(15, 27, 45, .06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0B1320;
    --bg-alt: #101A2B;
    --surface: #152136;
    --ink: #F3F1EC;
    --ink-soft: #A9B3C4;
    --line: #22314A;
    --accent: #F08A55;
    --accent-ink: #0B1320;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: Manrope, Inter, system-ui, sans-serif; letter-spacing: -.02em; margin: 0; }
p { margin: 0; }
a { color: inherit; }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 8px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .wrap { padding: 0 24px; } }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark { display: inline-flex; color: var(--ink); }
.brand-name { font: 800 20px/1 Manrope, sans-serif; letter-spacing: -.02em; }
nav { display: flex; gap: 4px; }
nav a {
  text-decoration: none; color: var(--ink-soft); font-weight: 500; font-size: 15px;
  padding: 10px 12px; border-radius: 10px;
}
nav a:hover { color: var(--ink); background: var(--bg-alt); }

/* Hero */
.hero { padding: 72px 0 64px; }
@media (min-width: 768px) { .hero { padding: 120px 0 104px; } }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; margin-bottom: 24px;
}
.hero h1 { font-size: clamp(40px, 8vw, 76px); line-height: 1.02; font-weight: 800; max-width: 14ch; }
.hl { color: var(--accent); }
.lede { margin-top: 24px; font-size: clamp(18px, 2.2vw, 21px); color: var(--ink-soft); max-width: 40ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 22px; border-radius: 12px;
  font-weight: 600; font-size: 16px; text-decoration: none; transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: var(--surface); }

/* Sections */
.section { padding: 80px 0; border-top: 1px solid var(--line); }
.section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 40px; }
.section-head h2 { font-size: clamp(30px, 4.5vw, 44px); font-weight: 800; }
.section-head p { margin-top: 8px; color: var(--ink-soft); }

/* Apps */
.apps { display: grid; gap: 20px; }
@media (min-width: 860px) { .apps { grid-template-columns: 3fr 2fr; } }
.app-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 14px;
}
@media (min-width: 640px) { .app-card { padding: 36px; } }
.app-card h3 { font-size: 26px; font-weight: 800; }
.app-card p { color: var(--ink-soft); }
.app-card .btn { align-self: flex-start; margin-top: 8px; }
.app-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 4px; }
.oikana-mark { font: 800 30px/1 Manrope, sans-serif; letter-spacing: -.04em; }
.oikana-mark span { color: var(--oikana-sun); }
.badge {
  font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px; background: color-mix(in srgb, var(--oikana-sun) 22%, transparent); color: var(--ink);
}
.badge-muted { background: var(--bg-alt); color: var(--ink-soft); }
.features { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 8px; }
@media (min-width: 520px) { .features { grid-template-columns: 1fr 1fr; } }
.features li { position: relative; padding-left: 26px; font-size: 15px; }
.features li::before {
  content: ""; position: absolute; left: 0; top: .45em; width: 14px; height: 14px; border-radius: 4px;
  background: var(--accent); opacity: .9;
}
.upcoming { border-style: dashed; box-shadow: none; background: transparent; }
.placeholder-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: repeating-linear-gradient(45deg, var(--line) 0 6px, transparent 6px 12px);
}

/* Principles */
.principles { display: grid; gap: 20px; }
@media (min-width: 760px) { .principles { grid-template-columns: repeat(3, 1fr); } }
.principle { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.principle .num { font: 700 14px/1 Manrope, sans-serif; color: var(--accent); }
.principle h3 { font-size: 22px; margin: 14px 0 8px; font-weight: 800; }
.principle p { color: var(--ink-soft); font-size: 16px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0 calc(32px + env(safe-area-inset-bottom)); }
.foot { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; color: var(--ink-soft); font-size: 14px; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .btn:hover { transform: none; }
}