/* Matches CountdownApp/Support/AppTheme.swift; darker orange keeps light-mode links readable. */
:root {
  color-scheme: light dark;
  --ink: #29212e;
  --muted: #756e6b;
  --paper: #fffcfa;
  --surface: #ffffff;
  --line: rgba(0, 0, 0, .06);
  --accent: #e65e45;
  --accent-soft: rgba(230, 94, 69, .10);
  --link: #b83f2b;
  --link-hover: #923120;
  --focus: #b83f2b;
  --shadow: 0 12px 36px rgba(41, 33, 46, .03);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f7f4f8;
    --muted: #b8b0bf;
    --paper: #0e0c12;
    --surface: #1b1722;
    --line: rgba(255, 255, 255, .10);
    --accent: #ff755c;
    --accent-soft: rgba(255, 117, 92, .10);
    --link: #ff755c;
    --link-hover: #ff9c89;
    --focus: #ff755c;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a { color: var(--link); text-underline-offset: .18em; }
a:hover { color: var(--link-hover); }
a:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 3px; }

.shell { width: min(100% - 32px, 780px); margin: 0 auto; }

header {
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -.02em;
  text-decoration: none;
}

.mark {
  display: inline-grid;
  width: 32px;
  height: 32px;
  place-items: center;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 11px;
  font-size: 20px;
  line-height: 1;
}

nav { display: flex; flex-wrap: wrap; gap: 15px; margin-top: 16px; font-size: 14px; }
nav a { color: var(--muted); font-weight: 650; text-decoration: none; }
nav a[aria-current="page"] { color: var(--link); }

main { padding: 42px 0 64px; }

.eyebrow {
  margin: 0 0 8px;
  color: var(--link);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .07em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.22; letter-spacing: -.035em; }
h1 { margin: 0; max-width: 16ch; font-size: clamp(34px, 8vw, 52px); }
h2 { margin: 42px 0 12px; font-size: clamp(24px, 5vw, 30px); }
h3 { margin: 24px 0 8px; font-size: 20px; }
p { margin: 0 0 16px; }
ul { margin: 0 0 18px; padding-left: 1.25em; }
li + li { margin-top: 7px; }

.lede { max-width: 60ch; margin-top: 18px; color: var(--muted); font-size: 19px; }
.panel, .notice {
  margin-top: 30px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
}
.notice { border-left: 5px solid var(--accent); }
.feature-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.feature-list li { position: relative; padding-left: 30px; }
.feature-list li::before { position: absolute; left: 0; content: "✓"; color: var(--link); font-weight: 800; }

.lang-block + .lang-block { margin-top: 54px; padding-top: 46px; border-top: 1px solid var(--line); }
.lang-label { color: var(--link); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.meta { color: var(--muted); font-size: 14px; }
.contact { font-weight: 700; }

footer { padding: 26px 0 42px; color: var(--muted); border-top: 1px solid var(--line); font-size: 14px; }
footer p { margin: 0; }
footer nav { margin-top: 8px; }

@media (min-width: 640px) {
  header .shell { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
  header nav { margin-top: 0; }
  .panel, .notice { padding: 30px; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; } }