/* Dipstick website. Oil Amber brand (design/DESIGN.md §2). No external requests: system fonts only. */

:root {
  --brand: #AD4F04;
  --brand-pressed: #8F4103;
  --brand-tint: #F7E8DA;
  --on-brand: #FFFFFF;

  --ground: #F6F3EF;
  --card: #FFFFFF;
  --inset: #F1EDE7;
  --ink: #201D1A;
  --ink-2: #5C554D;
  --ink-3: #756D63;
  --line: #E8E3DC;
  --link: #AD4F04;

  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
  --round: ui-rounded, -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #FFA43B;
    --brand-pressed: #E08D2B;
    --brand-tint: #33240F;
    --on-brand: #201400;

    --ground: #14120F;
    --card: #1E1B17;
    --inset: #282420;
    --ink: #F3EFE9;
    --ink-2: #B5ACA1;
    --ink-3: #958D81;
    --line: #35302A;
    --link: #FFA43B;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

a { color: var(--link); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

.skip {
  position: absolute; left: 16px; top: -100px;
  background: var(--ink); color: var(--ground);
  padding: 8px 14px; border-radius: 8px; z-index: 10;
}
.skip:focus { top: 12px; }

.wrap { width: 100%; max-width: 64rem; margin: 0 auto; padding-inline: 16px; }
.narrow { max-width: 44rem; }

/* Header */
.site-head { border-bottom: 1px solid var(--line); background: var(--ground); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; flex-wrap: wrap; padding-block: 8px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; display: block; }
.brand span { font-family: var(--round); font-weight: 800; font-size: 1.15rem; letter-spacing: -0.01em; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 4px 18px; flex-wrap: wrap; }
.site-nav a { color: var(--ink-2); text-decoration: none; font-weight: 600; font-size: 0.9rem; padding: 6px 0; display: inline-block; }
.site-nav a:hover { color: var(--ink); text-decoration: underline; }
.site-nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-thickness: 2px; }

/* Type */
h1, h2, h3 { margin: 0; line-height: 1.15; text-wrap: balance; font-family: var(--round); }
h1 { font-weight: 800; letter-spacing: -0.03em; font-size: clamp(2.2rem, 9vw, 3.6rem); }
h2 { font-weight: 800; letter-spacing: -0.02em; font-size: clamp(1.35rem, 4.6vw, 1.75rem); }
h3 { font-weight: 700; font-size: 1.15rem; line-height: 1.3; }
p { margin: 0 0 1em; }
.eyebrow { font-family: var(--mono); font-weight: 600; text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; color: var(--ink-3); margin: 0 0 10px; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 36rem; }

/* Hero */
.hero { padding: 40px 0 44px; }
.hero .wrap { display: grid; gap: 36px; align-items: center; }
.hero h1 .sub {
  display: block; width: fit-content; margin-top: 12px;
  font-size: clamp(1.1rem, 4.4vw, 1.6rem); letter-spacing: -0.01em; font-weight: 700;
  background: var(--brand); color: var(--on-brand);
  padding: 4px 12px; border-radius: 8px;
}
.hero .tagline { font-family: var(--round); font-weight: 800; font-size: clamp(1.35rem, 5vw, 1.9rem); line-height: 1.2; letter-spacing: -0.02em; margin: 22px 0 12px; max-width: 22ch; }
.hero .lede { margin-bottom: 24px; }
.pill {
  display: inline-block;
  font-family: var(--mono); font-size: 0.78rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  background: var(--ink); color: var(--ground);
  padding: 10px 16px; border-radius: 999px;
}
.device {
  justify-self: center; margin: 0;
  width: min(100%, 320px);
  padding: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 46px;
  box-shadow: 10px 10px 0 var(--brand);
}
.device img { display: block; width: 100%; height: auto; border-radius: 36px; }
@media (min-width: 760px) {
  .hero { padding: 72px 0 76px; }
  .hero .wrap { grid-template-columns: 1.3fr 1fr; gap: 56px; }
}

/* Sections */
.section { padding: 48px 0; }
.section + .section { border-top: 1px solid var(--line); }
.sec-head { margin-bottom: 24px; }

.features { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
@media (min-width: 760px) { .features { grid-template-columns: 1fr 1fr 1fr; } }
.feature { background: var(--card); border: 1px solid var(--line); border-top: 6px solid var(--brand); border-radius: 16px; padding: 20px; }
.feature h3 { margin-bottom: 8px; }
.feature p { margin: 0; color: var(--ink-2); font-size: 1rem; }

.switch-card { background: var(--brand-tint); border: 1px solid var(--line); border-radius: 20px; padding: 28px 24px; }
.switch-card h2 { margin-bottom: 12px; }
.switch-card p { margin: 0; max-width: 62ch; }
@media (min-width: 760px) { .switch-card { padding: 40px; } }

/* Legal and support prose */
.page-head { padding: 40px 0 8px; }
.page-head h1 { font-size: clamp(1.9rem, 7vw, 2.8rem); }
.page-head .meta { font-family: var(--mono); color: var(--ink-3); margin-top: 12px; font-size: 0.85rem; letter-spacing: 0.04em; }
.prose { padding: 16px 0 48px; }
.prose h2 { margin: 36px 0 12px; font-size: clamp(1.1rem, 4vw, 1.3rem); }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1em; }
.prose li { margin: 6px 0; }

/* 404 */
.lost { padding-block: 72px 96px; }
.lost .lede { margin-top: 16px; }
.lost p { color: var(--ink-2); }

/* Footer */
.site-foot { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--ink-3); font-size: 0.95rem; }
.site-foot ul { list-style: none; margin: 0 0 12px; padding: 0; display: flex; gap: 6px 20px; flex-wrap: wrap; }
.site-foot a { color: var(--ink-2); font-weight: 600; }
.site-foot p { margin: 0; }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
@media print {
  .site-head nav, .skip, .pill { display: none; }
  body { background: #fff; color: #000; }
}