:root { --ink:#1b1f24; --sub:#5b6470; --line:#dfe3e8; --bg:#f4f6f9; --panel:#fff; --navy:#1f3a5f;
        --red:#d93025; --green:#1e8e3e; --amber:#b26a00; }
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font-family: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif; font-size: 14px; line-height: 1.6; }
a { color: var(--navy); }
header.top { background: var(--navy); color: #fff; padding: 12px 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
header.top h1 { font-size: 17px; margin: 0; }
header.top .sp { flex: 1; }
header.top a, header.top button { color: #fff; background: rgba(255,255,255,.15); border: 0; border-radius: 8px; padding: 6px 12px; font: inherit; text-decoration: none; cursor: pointer; }
.alphabar { background: #fff8e1; border-bottom: 1px solid #f0d58a; color: #5c4400; font-size: 12px; padding: 6px 14px; }
main.wrap { padding: 12px 16px 40px; max-width: 1100px; margin: 0 auto; }
.card { background: var(--panel); border-radius: 12px; padding: 14px 16px; margin-bottom: 14px; box-shadow: 0 1px 3px rgba(0,0,0,.06); overflow-x: auto; }
.card h2 { font-size: 15px; margin: 0 0 10px; }
.card h3 { font-size: 14px; margin: 14px 0 6px; }
.muted { color: var(--sub); font-size: 12px; }
.err { color: var(--red); min-height: 1.2em; }
.ok { color: var(--green); }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; color: var(--sub); font-weight: 600; white-space: nowrap; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tools { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 8px 0; }
input[type=text], input[type=email], input[type=number], input[type=time], select, textarea {
  font: inherit; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
input[type=color] { width: 40px; height: 32px; padding: 0 2px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.btn { font: inherit; border: 1px solid var(--navy); background: #fff; color: var(--navy); border-radius: 8px; padding: 6px 12px; cursor: pointer; font-weight: 600; }
.btn.primary { background: var(--navy); color: #fff; }
.btn.danger { border-color: var(--red); color: var(--red); }
.btn:disabled { opacity: .5; cursor: default; }
.sw { display: inline-block; width: 14px; height: 14px; border-radius: 50%; vertical-align: -2px; border: 1px solid rgba(0,0,0,.2); }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: #f0f2f5; padding: 2px 6px; border-radius: 6px; word-break: break-all; }
.box { max-width: 380px; margin: 56px auto; background: #fff; border-radius: 14px; padding: 22px; box-shadow: 0 4px 18px rgba(0,0,0,.08); }
.box h2 { margin: 0 0 6px; font-size: 18px; }
.box input { width: 100%; font-size: 17px; padding: 11px; border: 2px solid var(--line); border-radius: 10px; margin: 10px 0; }
.box button.go { width: 100%; padding: 12px; font-size: 17px; font-weight: 700; background: var(--navy); color: #fff; border: 0; border-radius: 10px; cursor: pointer; }
.hidden { display: none !important; }