:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --ink: #1d2733;
  --muted: #5d6b7a;
  --line: #d9e0e8;
  --brand: #1f4e79;
  --brand-ink: #ffffff;
  --accent: #e8f0f8;
  --ok: #1e7b46;
  --ok-bg: #e5f4ea;
  --warn: #8a5a00;
  --warn-bg: #fff3d6;
  --err: #b42318;
  --err-bg: #fdecea;
  --radius: 14px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}
h1 { font-size: 1.6rem; line-height: 1.2; margin: .2em 0 .4em; }
h2 { font-size: 1.25rem; margin: 1.2em 0 .5em; }
h3 { font-size: 1.05rem; margin: 1em 0 .4em; }
a { color: var(--brand); }
[hidden] { display: none !important; }
.small { font-size: .88rem; color: var(--muted); }
.muted { color: var(--muted); }
.err { color: var(--err); background: var(--err-bg); padding: .6em .8em; border-radius: 10px; }
.okmsg { color: var(--ok); background: var(--ok-bg); padding: .6em .8em; border-radius: 10px; }
.warnmsg { color: var(--warn); background: var(--warn-bg); padding: .6em .8em; border-radius: 10px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 0 0 14px; }
.center { text-align: center; }

.btn {
  appearance: none; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font: inherit; font-weight: 600; padding: .6em 1.1em; border-radius: 10px; cursor: pointer;
  min-height: 44px; touch-action: manipulation;
}
.btn:hover { border-color: var(--brand); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.btn.danger { background: var(--err); color: #fff; border-color: var(--err); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); text-decoration: underline; }
.btn.big { font-size: 1.15rem; padding: .8em 1.4em; min-height: 56px; }
.btn.small { font-size: .85rem; padding: .3em .7em; min-height: 34px; }

input, select, textarea {
  font: inherit; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: .55em .7em; min-height: 44px; width: 100%;
}
textarea { min-height: 70px; resize: vertical; }
input:focus, select:focus, textarea:focus, .btn:focus-visible { outline: 3px solid #9cc3e6; outline-offset: 1px; }
label { display: block; font-weight: 600; margin: .7em 0 .25em; }

.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: var(--brand); color: var(--brand-ink); padding: 12px 18px; }
.bar .brand { font-weight: 700; }
.foot { text-align: center; padding: 24px 12px 32px; font-size: .85rem; }