:root {
  color-scheme: light;
  --bg: #f5f0e8;
  --card: rgba(255, 255, 255, 0.86);
  --text: #173331;
  --muted: #697a75;
  --line: #ded5c8;
  --accent: #09696a;
  --accent-2: #d8915f;
  --danger: #a84426;
  --ok: #257052;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 8%, rgba(216, 145, 95, 0.22), transparent 30%),
    radial-gradient(circle at 86% 18%, rgba(9, 105, 106, 0.16), transparent 28%),
    var(--bg);
}
.shell { width: min(1120px, calc(100vw - 32px)); margin: 0 auto; padding: 44px 0; }
.hero { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; margin-bottom: 22px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 10px; font: 500 48px/1.05 Georgia, "Songti SC", serif; }
h2 { margin-bottom: 8px; font-size: 19px; }
.sub, .card p { color: var(--muted); line-height: 1.7; }
.card {
  border: 1px solid rgba(222, 213, 200, .9);
  border-radius: 24px;
  padding: 24px;
  background: var(--card);
  box-shadow: 0 24px 80px rgba(31, 39, 35, .08);
  backdrop-filter: blur(18px);
}
.login-card { display: grid; grid-template-columns: 1fr 1.2fr; gap: 22px; align-items: end; }
.grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; }
.span-2 { grid-row: span 2; }
.section-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.badge { border-radius: 999px; padding: 7px 11px; background: #efe6db; color: var(--muted); font-size: 12px; font-weight: 700; white-space: nowrap; }
.badge.ok { background: rgba(37, 112, 82, .12); color: var(--ok); }
.badge.warn { background: rgba(168, 68, 38, .12); color: var(--danger); }
.form-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: end; }
.settings-form, .stack-form { display: grid; gap: 14px; }
.settings-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.settings-form label:nth-of-type(1), .settings-form label:nth-of-type(5), .preset-row, .actions { grid-column: 1 / -1; }
label { display: grid; gap: 7px; color: var(--muted); font-size: 12px; font-weight: 750; letter-spacing: .04em; text-transform: uppercase; }
input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 0 13px;
  outline: none;
  background: #fffdf9;
  color: var(--text);
  font: inherit;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(9, 105, 106, .1); }
button {
  height: 46px;
  border: 0;
  border-radius: 13px;
  padding: 0 18px;
  cursor: pointer;
  background: var(--accent);
  color: white;
  font-weight: 800;
}
button:disabled { cursor: wait; opacity: .65; }
.ghost, .preset-row button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, .62);
  color: var(--accent);
}
.preset-row { display: flex; flex-wrap: wrap; gap: 10px; }
.actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.actions p { margin: 0; font-size: 12px; }
.usage-list { display: grid; gap: 9px; margin-top: 12px; max-height: 360px; overflow: auto; }
.usage-row { display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; padding: 12px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.55); }
.usage-row strong { font-size: 13px; }
.usage-row span, .usage-row small { color: var(--muted); font-size: 12px; }
.toast { position: fixed; right: 22px; bottom: 22px; max-width: min(420px, calc(100vw - 44px)); padding: 13px 15px; border-radius: 15px; background: #183735; color: white; box-shadow: 0 20px 60px rgba(0,0,0,.18); }
.toast.error { background: var(--danger); }
.hidden { display: none !important; }
@media (max-width: 820px) {
  .shell { width: min(100% - 22px, 1120px); padding: 24px 0; }
  h1 { font-size: 38px; }
  .hero, .login-card, .grid, .settings-form, .form-row { display: grid; grid-template-columns: 1fr; }
  .span-2 { grid-row: auto; }
}