:root {
  --bg: #0E1116; --bg-rgb: 14, 17, 22; --card: #171B22; --card-hi: #1D232C; --line: #262B33;
  --text: #E8EAED; --muted: #9AA4B2; --accent: #38BDF8; --accent-ink: #062331;
  --good: #2FD9A8; --normal: #38BDF8; --bad: #F59E0B; --worse: #F97066;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #F8FAFC; --bg-rgb: 248, 250, 252; --card: #FFFFFF; --card-hi: #EFF8FF; --line: #E2E8F0;
    --text: #111827; --muted: #64748B; --accent: #0284C7; --accent-ink: #FFFFFF;
  }
}
:root[data-theme="light"] {
  --bg: #F8FAFC; --bg-rgb: 248, 250, 252; --card: #FFFFFF; --card-hi: #EFF8FF; --line: #E2E8F0;
  --text: #111827; --muted: #64748B; --accent: #0284C7; --accent-ink: #FFFFFF;
}
* { box-sizing: border-box; }
html { color-scheme: dark light; }
body {
  margin: 0; padding: 16px max(16px, calc((100% - 480px) / 2)) 40px; background: var(--bg); color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Pretendard, sans-serif;
}
a { color: var(--accent); }
h1 { margin: 0; font-size: 26px; line-height: 1.25; letter-spacing: -.03em; }
h2 { font-size: 16px; margin: 26px 0 10px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }

.crumb { margin: 14px 0 0; font-size: 13px; }
.crumb a { color: var(--muted); text-decoration: none; }
.crumb a:hover { color: var(--accent); }
.theme-toggle {
  position: fixed; z-index: 20; top: calc(14px + env(safe-area-inset-top, 0px)); right: max(14px, calc((100% - 480px) / 2 + 14px));
  width: 38px; height: 38px; margin: 0; padding: 0; max-width: none; border: 1px solid var(--line); border-radius: 50%;
  background: var(--card); font-size: 16px; line-height: 1; cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 16px -6px rgba(0, 0, 0, .4);
}
.theme-toggle:hover { border-color: var(--accent); }

.hero { padding-top: 28px; padding-bottom: 12px; }
.lead { margin: 8px 0 0; color: var(--muted); text-wrap: balance; }

select {
  width: 100%; margin-top: 14px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--text); font-size: 14px; font-weight: 700;
}

.now-card {
  margin-top: 16px; padding: 22px; border-radius: 18px; text-align: center;
  background: linear-gradient(135deg, rgba(56, 189, 248, .18), rgba(56, 189, 248, .04)); border: 1px solid var(--accent);
}
.now-temp { margin: 0; font-size: 40px; font-weight: 800; color: var(--text); }
.now-desc { margin: 4px 0 0; font-size: 14px; color: var(--muted); }
.now-pop { margin: 10px 0 0; font-size: 13px; color: var(--accent); font-weight: 700; }

.hour-strip { display: flex; gap: 10px; margin-top: 14px; overflow-x: auto; padding-bottom: 4px; -webkit-overflow-scrolling: touch; }
.hour-item {
  flex: none; width: 58px; padding: 10px 6px; border: 1px solid var(--line); border-radius: 12px; background: var(--card);
  text-align: center; font-size: 12px; color: var(--muted);
}
.hour-item .h-time { font-weight: 700; color: var(--text); }
.hour-item .h-icon { font-size: 18px; margin: 4px 0; }
.hour-item .h-temp { font-weight: 800; color: var(--text); font-size: 13px; }

.air-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.air-card { padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: var(--card); text-align: center; }
.air-label { margin: 0; font-size: 12px; color: var(--muted); font-weight: 700; }
.air-value { margin: 6px 0 0; font-size: 26px; font-weight: 800; color: var(--text); }
.air-grade {
  display: inline-block; margin-top: 8px; padding: 4px 12px; border-radius: 99px; font-size: 12px; font-weight: 800;
}
.air-grade.g-good { background: rgba(47, 217, 168, .18); color: var(--good); }
.air-grade.g-normal { background: rgba(56, 189, 248, .18); color: var(--normal); }
.air-grade.g-bad { background: rgba(245, 158, 11, .18); color: var(--bad); }
.air-grade.g-worse { background: rgba(249, 112, 102, .18); color: var(--worse); }

.rate-list { display: grid; gap: 2px; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; margin-top: 14px; }
.rate-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: var(--card); }
.rate-row + .rate-row { border-top: 1px solid var(--line); }
.rate-name { font-size: 14px; font-weight: 700; color: var(--text); }
.rate-unit { font-size: 12px; color: var(--muted); margin-left: 6px; }
.rate-base { font-size: 15px; font-weight: 800; color: var(--accent); }

.empty-msg { color: var(--muted); font-size: 13px; }

.disclaimer { margin-top: 32px; padding: 14px; border-radius: 12px; background: var(--card); color: var(--muted); font-size: 12px; line-height: 1.6; }
.foot { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.foot nav a { color: var(--muted); text-decoration: none; margin-right: 4px; }
.foot nav a:hover { color: var(--accent); }