* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  background: #f5f7fa; color: #2b3440; line-height: 1.7; }
.wrap { max-width: 860px; margin: 0 auto; padding: 16px; }
header.site { background: #1e5aa8; color: #fff; padding: 14px 0; }
header.site .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 0; padding-bottom: 0; }
header.site h1 { font-size: 1.15rem; }
header.site a { color: #fff; text-decoration: none; }
header.site .sub { font-size: .8rem; opacity: .85; }
nav.user { font-size: .85rem; }
nav.user a { margin-left: 12px; }
.card { background: #fff; border-radius: 10px; padding: 20px; margin: 16px 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.08); }
h2 { font-size: 1.1rem; margin-bottom: 12px; color: #1e5aa8; }
h3 { font-size: 1rem; margin: 12px 0 8px; }
p { margin: 8px 0; }
.muted { color: #6b7684; font-size: .85rem; }
input[type=text], input[type=email] { font-size: 1rem; padding: 10px; border: 1px solid #c6cdd6;
  border-radius: 6px; width: 100%; }
.btn { display: inline-block; font-size: 1rem; padding: 10px 22px; border: none; border-radius: 6px;
  background: #1e5aa8; color: #fff; cursor: pointer; text-decoration: none; text-align: center; }
.btn:hover { background: #174a8c; }
.btn.gray { background: #8a94a1; }
.btn.green { background: #2e9e5b; }
.btn.red { background: #d9534f; }
.btn.big { font-size: 1.2rem; padding: 14px 34px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1; min-width: 140px; }
.row > .fix { flex: 0 0 auto; min-width: 0; }
table.words { width: 100%; border-collapse: collapse; font-size: .95rem; }
table.words th, table.words td { border-bottom: 1px solid #e3e8ee; padding: 8px 6px; text-align: left; }
table.words th { background: #eef2f7; font-weight: 600; font-size: .85rem; }
.badge { display: inline-block; font-size: .75rem; padding: 2px 8px; border-radius: 10px; color: #fff; }
.badge.s0 { background: #8a94a1; } .badge.s1 { background: #e8a33d; } .badge.s2 { background: #2e9e5b; }
.badge.warn { background: #d9534f; }
.flash { padding: 12px 16px; border-radius: 8px; margin: 12px 0; }
.flash.ok { background: #e2f4e8; color: #1e6e3f; }
.flash.err { background: #fbe3e2; color: #a33230; }
.flash.info { background: #e3edf9; color: #174a8c; }
.uid-box { font-size: 1.6rem; letter-spacing: .15em; font-weight: 700; background: #eef2f7;
  padding: 12px 20px; border-radius: 8px; display: inline-block; margin: 8px 0; }
.suggest { background: #fff6e8; border: 1px solid #e8c98a; border-radius: 8px; padding: 10px 14px; margin: 10px 0; font-size: .9rem; }
/* フラッシュカード */
.fc { text-align: center; padding: 30px 10px; }
.fc .prompt { font-size: 2rem; font-weight: 700; margin: 20px 0; }
.fc .answer { font-size: 1.5rem; color: #1e5aa8; margin: 16px 0; min-height: 2em; }
.fc .prog { color: #6b7684; font-size: .85rem; }
footer { text-align: center; font-size: .8rem; color: #8a94a1; padding: 24px 0; }
footer a { color: #8a94a1; }
/* 印刷 */
@media print {
  body { background: #fff; }
  header.site, .noprint, footer { display: none !important; }
  .card { box-shadow: none; padding: 0; }
  .page-break { page-break-before: always; }
}
table.print-test { width: 100%; border-collapse: collapse; }
table.print-test th, table.print-test td { border: 1px solid #444; padding: 8px 10px; font-size: 1rem; }
table.print-test .no { width: 2.5em; text-align: center; }
table.print-test .ans { width: 45%; }
@media (max-width: 600px) {
  .fc .prompt { font-size: 1.5rem; }
  header.site h1 { font-size: 1rem; }
}