:root {
  --paper: #F2ECE0;
  --paper-2: #E9E1D0;
  --ink: #1B1F2A;
  --ink-2: #4A4F5C;
  --line: #CFC5B0;
  --marker: #E4570C;
  --marker-ink: #FFF8F0;
  --alert: #B3261E;
  --ok: #2F6B3F;
  --radius: 14px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #15171C; --paper-2: #1E2128; --ink: #ECE6D8; --ink-2: #A8A395;
    --line: #353A44; --marker: #FF7A33; --marker-ink: #1B1209; --alert: #FF8A80; --ok: #7DCB93;
  }
}
* { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--paper); color: var(--ink); font-family: var(--font);
  font-size: 17px; line-height: 1.6; padding: 0 16px calc(84px + env(safe-area-inset-bottom));
  max-width: 560px; margin: 0 auto;
  background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--ink) 7%, transparent) 1px, transparent 0);
  background-size: 22px 22px;
}
.top { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 16px 0 8px; }
.brand { display: flex; align-items: center; gap: 10px; }
.mark { width: 28px; height: 28px; border: 3px solid var(--marker); border-radius: 50%; position: relative; flex: none; transform: rotate(-8deg); }
.mark::after { content: ""; position: absolute; inset: 5px; background: var(--marker); border-radius: 50%; }
h1 { font-size: 19px; font-weight: 700; letter-spacing: -0.01em; line-height: 1.25; }
h2 { font-size: 21px; font-weight: 700; letter-spacing: -0.02em; margin: 24px 0 10px; }
h3 { font-size: 16px; font-weight: 700; }
.badge { font-family: var(--mono); font-size: 12px; border: 1px solid var(--ink); border-radius: 999px; padding: 2px 10px; white-space: nowrap; }
.notice { font-size: 14px; color: var(--ink-2); border-left: 4px solid var(--marker); padding: 6px 0 6px 12px; margin: 4px 0 8px; }
.notice strong { color: var(--ink); }

.card { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin: 12px 0; }
.card.due { border-color: var(--marker); border-width: 2px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.mono { font-family: var(--mono); }
.muted { color: var(--ink-2); font-size: 14px; }
.big-num { font-family: var(--mono); font-size: 34px; font-weight: 600; line-height: 1; letter-spacing: -0.04em; }
.unit { font-size: 14px; font-family: var(--font); letter-spacing: 0; margin-left: 4px; color: var(--ink-2); }

button, select, input, textarea { font: inherit; color: inherit; }
.btn {
  min-height: 56px; width: 100%; border: 2px solid var(--ink); background: var(--paper); border-radius: 999px;
  font-weight: 700; font-size: 18px; cursor: pointer; padding: 0 20px; transition: transform .08s ease, background .15s;
}
.btn:active { transform: scale(.98); }
.btn.primary { background: var(--marker); border-color: var(--marker); color: var(--marker-ink); }
.btn.alert { background: var(--alert); border-color: var(--alert); color: var(--paper); min-height: 76px; font-size: 20px; }
.btn.small { min-height: 44px; width: auto; flex: none; white-space: nowrap; font-size: 15px; padding: 0 16px; }
.btn.ghost { border-color: var(--line); font-weight: 700; }
.btn:focus-visible, .tab:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible { outline: 3px solid var(--marker); outline-offset: 2px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.stack > * + * { margin-top: 10px; }

select, input[type=number], input[type=text], textarea {
  width: 100%; min-height: 48px; background: var(--paper); border: 1px solid var(--ink-2); border-radius: 10px; padding: 8px 12px;
}
label.field { display: block; font-size: 14px; color: var(--ink-2); font-weight: 700; margin-top: 10px; }
label.field > * { margin-top: 4px; }

.meter { height: 10px; border-radius: 999px; background: var(--line); overflow: hidden; margin-top: 10px; }
.meter > i { display: block; height: 100%; background: var(--ink); border-radius: 999px; transition: width .4s; }
.card.due .meter > i { background: var(--marker); }
.tag { display: inline-block; font-family: var(--mono); font-size: 12px; font-weight: 600; border: 1px solid var(--ink); border-radius: 999px; padding: 1px 9px; margin-left: 6px; }
.tag.hot { background: var(--marker); border-color: var(--marker); color: var(--marker-ink); }
.tag.red { background: var(--alert); border-color: var(--alert); color: var(--paper); }
.tag.ok { border-color: var(--ok); color: var(--ok); }

.steps { padding-left: 1.3em; }
.steps li { margin: 6px 0; }
.demo-bar { border: 1px dashed var(--ink-2); border-radius: var(--radius); padding: 10px 14px; margin: 16px 0; font-size: 14px; }
.demo-bar .row { flex-wrap: wrap; justify-content: flex-start; margin-top: 8px; }

table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--ink-2); }

.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px;
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom)); background: var(--paper); border-top: 1px solid var(--line);
  max-width: 560px; margin: 0 auto;
}
.tab { min-height: 52px; border: 1px solid var(--line); background: var(--paper-2); border-radius: 12px; font-weight: 700; font-size: 15px; cursor: pointer; }
.tab[aria-current="page"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

dialog { border: 2px solid var(--ink); border-radius: var(--radius); background: var(--paper); color: var(--ink); width: min(94vw, 520px); max-height: 92vh; padding: 18px; }
dialog::backdrop { background: color-mix(in srgb, var(--ink) 55%, transparent); }
.check { display: flex; gap: 10px; align-items: flex-start; padding: 10px 0; border-bottom: 1px solid var(--line); }
.check input { width: 26px; height: 26px; margin-top: 2px; accent-color: var(--marker); }
.call { display: flex; gap: 10px; flex-wrap: wrap; }
.call a { flex: 1 1 140px; text-decoration: none; text-align: center; display: block; line-height: 56px; border: 2px solid var(--ink); border-radius: 999px; font-weight: 700; color: var(--ink); }
.call a.sos { background: var(--alert); border-color: var(--alert); color: var(--paper); }
.toast {
  position: fixed; left: 16px; right: 16px; bottom: calc(86px + env(safe-area-inset-bottom)); background: var(--ink); color: var(--paper);
  border-radius: 12px; padding: 12px 16px; font-weight: 700; max-width: 528px; margin: 0 auto; z-index: 5;
  animation: toast .25s ease-out;
}
@keyframes toast { from { transform: translateY(12px); opacity: 0; } to { transform: none; opacity: 1; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }