/* 受験手帳 site. Tokens from app-design/DESIGN.md. No external fonts/JS. */
:root {
  --paper: #FAF7F0;
  --surface: #FFFFFF;
  --ink: #1F2433;
  --ink-muted: #5A6070;
  --rule: #E6E1D6;
  --primary: #2C4A7A;
  --primary-tint: #E8EDF5;
  --shu: #C2412D;
  --radius: 12px;
  --font: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-brand: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.8 var(--font);
  -webkit-text-size-adjust: 100%;
  overflow-wrap: break-word;
}

.wrap { width: 100%; max-width: 720px; margin: 0 auto; padding: 0 16px; }
main { flex: 1; padding-top: 32px; padding-bottom: 48px; }

a { color: var(--primary); text-underline-offset: 3px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* header / footer */
.site-header { border-bottom: 1px solid var(--rule); }
.site-header .wrap { display: flex; justify-content: space-between; align-items: center; min-height: 56px; }
.brand { font: 600 22px/1.2 var(--font-brand); color: var(--ink); text-decoration: none; }
.site-header nav a { font-size: 14px; }

.site-footer { border-top: 1px solid var(--rule); padding: 24px 0 32px; font-size: 14px; line-height: 1.6; color: var(--ink-muted); }
.site-footer ul { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 16px; }
.site-footer p { margin: 0; }

/* headings */
h1, h2, h3 { text-wrap: balance; word-break: auto-phrase; }
h1 { font-size: 28px; line-height: 1.3; margin: 0 0 16px; }
h2 { font-size: 20px; line-height: 1.4; margin: 2em 0 12px; padding-bottom: 4px; border-bottom: 1px solid var(--rule); }
h3 { font-size: 17px; line-height: 1.4; margin: 1.6em 0 8px; }
p, ul, ol { margin: 0 0 1em; }
li { margin: 0.25em 0; }
hr { border: 0; border-top: 1px solid var(--rule); margin: 24px 0; }
blockquote { margin: 0 0 1em; padding: 4px 16px; border-left: 3px solid var(--rule); color: var(--ink-muted); }

/* tables (legal pages). Wrapper scrolls inside itself, page never scrolls sideways. */
.table-wrap { overflow-x: auto; margin: 0 0 1em; }
table { border-collapse: collapse; width: 100%; font-size: 14px; line-height: 1.6; }
th, td { border: 1px solid var(--rule); padding: 8px 10px; text-align: left; vertical-align: top; overflow-wrap: anywhere; }
th { background: var(--primary-tint); white-space: nowrap; }
td { background: var(--surface); }

/* home */
.hero { padding: 24px 0 8px; }
.hero h1 { font: 600 36px/1.2 var(--font-brand); margin-bottom: 12px; }
.lead { font-size: 18px; line-height: 1.7; font-weight: 700; }
.soon { display: inline-block; margin: 8px 0 0; padding: 6px 16px; border-radius: 9999px; background: var(--primary-tint); color: var(--primary); font-size: 14px; font-weight: 700; line-height: 1.6; }
.cards { list-style: none; padding: 0; display: grid; gap: 12px; }
.card { margin: 0; padding: 16px; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); }
.card h3 { margin: 0 0 4px; }
.card p { margin: 0; font-size: 15px; line-height: 1.7; }
.dot { display: inline-block; width: 10px; height: 10px; margin-right: 8px; border-radius: 50%; background: var(--shu); }
.note { font-size: 14px; line-height: 1.7; color: var(--ink-muted); }

/* support */
details { margin: 8px 0; padding: 0 16px; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); }
summary { padding: 12px 0; font-weight: 700; line-height: 1.6; cursor: pointer; }
details[open] summary { border-bottom: 1px solid var(--rule); margin-bottom: 12px; }
details > :last-child { margin-bottom: 16px; }

@media (min-width: 640px) {
  main { padding-top: 40px; }
  .cards { grid-template-columns: 1fr 1fr; }
}