/* TutorNorth. Direction: "marked work" — cool paper, navy ink, one emerald accent that means "checked".
   Radius system: 10px surfaces, pill buttons. One typeface (Hanken Grotesk). */
:root {
  --paper: #f3f5f6;
  --panel: #ffffff;
  --ink: #0d1b2a;
  --ink-2: #3c4a58;
  --line: #d6dde2;
  --check: #0b7a55;
  --check-soft: #e3f2ec;
  --check-ink: #ffffff;
  --radius: 10px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --font: "Hanken Grotesk", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0c1621; --panel: #122130; --ink: #e8eef3; --ink-2: #a9b6c2; --line: #22354a;
    --check: #3cc48f; --check-soft: #12352a; --check-ink: #06140e;
    color-scheme: dark;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
::selection { background: var(--check); color: var(--check-ink); }
:focus-visible { outline: 2px solid var(--check); outline-offset: 3px; border-radius: 6px; }
a { color: inherit; text-underline-offset: 3px; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; text-wrap: balance; }
p { margin: 0; }
.wrap { max-width: 1180px; margin: 0 auto; padding-inline: 24px; }

.btn { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; font: 600 15px/1 var(--font); padding: 14px 22px; border-radius: 999px; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: transform 160ms var(--ease-out), background-color 200ms ease, border-color 200ms ease; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-line { border-color: var(--line); color: var(--ink); }
@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover { background: color-mix(in oklab, var(--ink) 85%, var(--check)); }
  .btn-line:hover { border-color: var(--ink-2); }
}

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: color-mix(in oklab, var(--paper) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: -0.03em; text-decoration: none; }
.brand svg { width: 26px; height: 26px; }
.site-nav { display: flex; gap: 26px; font-size: 15px; color: var(--ink-2); }
.site-nav a { text-decoration: none; }
.site-nav a:hover { color: var(--ink); }
@media (max-width: 719px) { .site-nav { display: none; } }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 36px; color: var(--ink-2); font-size: 14px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 20px; flex-wrap: wrap; }

/* Legal pages */
.legal { padding-block: 64px 96px; }
.legal article { max-width: 70ch; }
.legal h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); margin-bottom: 10px; }
.legal .updated { color: var(--ink-2); margin-bottom: 40px; }
.legal h2 { font-size: 1.35rem; margin: 40px 0 12px; letter-spacing: -0.015em; }
.legal p, .legal li { color: var(--ink-2); }
.legal p + p { margin-top: 12px; }
.legal ul { padding-left: 1.2em; margin: 12px 0 0; }
.legal li + li { margin-top: 6px; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }

[id] { scroll-margin-top: 80px; }