:root {
  --bg: #eef1ef;
  --surface: #ffffff;
  --surface-soft: #f7f8f6;
  --ink: #1f2d35;
  --muted: #65737b;
  --line: #cbd5d4;
  --accent: #2f6f73;
  --accent-dark: #224d52;
  --warn: #a3432f;
  --warn-bg: #fff0ec;
  --gold: #80621f;
  --gold-bg: #f7f0da;
  --ok: #2f6b46;
  --shadow: 0 18px 46px rgba(33, 45, 50, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family:
    "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  line-height: 1.65;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.site-header,
main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  padding: 40px 0 24px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 4px;
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 1.35rem;
  line-height: 1.35;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 1rem;
}

.lead {
  margin-bottom: 0;
  color: var(--muted);
}

.guideline-badge {
  flex: 0 0 auto;
  border: 1px solid #d9c88f;
  background: var(--gold-bg);
  color: var(--gold);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 700;
  white-space: nowrap;
}

.checker-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.85fr) minmax(0, 1.25fr);
  gap: 18px;
  align-items: start;
}

.control-panel,
.result-panel,
.revenue-section,
.explain-section article {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.control-panel,
.result-panel {
  padding: 22px;
}

.panel-heading,
.section-heading {
  margin-bottom: 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.field input {
  width: 100%;
  min-height: 44px;
  border: 1px solid #b8c5c3;
  border-radius: 8px;
  padding: 8px 10px;
  background: var(--surface-soft);
  color: var(--ink);
  font-size: 1.1rem;
}

.field input:focus,
.switch-row input:focus-visible,
.day-option:focus-visible {
  outline: 3px solid rgba(47, 111, 115, 0.24);
  outline-offset: 2px;
}

.full-width {
  margin-top: 18px;
}

.switch-list {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.switch-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  background: var(--surface-soft);
  color: var(--ink);
  font-weight: 700;
}

.switch-row input {
  width: 22px;
  height: 22px;
  accent-color: var(--accent);
}

.day-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 18px 0 0;
  border: 0;
  padding: 0;
}

.day-toggle legend {
  grid-column: 1 / -1;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.day-option {
  min-height: 44px;
  border: 1px solid #b8c5c3;
  border-radius: 8px;
  background: var(--surface-soft);
  color: var(--accent-dark);
  font-weight: 800;
}

.day-option.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.weight-callout {
  display: grid;
  gap: 3px;
  border-left: 4px solid var(--accent);
  background: #edf5f2;
  padding: 14px 16px;
  margin-bottom: 16px;
}

.weight-label {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.weight-callout strong {
  font-size: 1.55rem;
  line-height: 1.25;
}

.weight-callout span:last-child {
  color: var(--muted);
  font-size: 0.92rem;
}

.items-list {
  display: grid;
  gap: 10px;
}

.bichiku-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 94px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--surface-soft);
}

.bichiku-item.is-missing {
  border-color: #d69b8c;
  background: var(--warn-bg);
}

.item-title {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  margin-bottom: 2px;
}

.item-title strong {
  font-size: 1.04rem;
}

.item-title span {
  color: var(--muted);
  font-size: 0.86rem;
}

.item-quantity {
  margin-bottom: 2px;
  color: var(--ink);
  font-size: 1.2rem;
  font-weight: 800;
}

.item-detail {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.owned-check {
  display: flex;
  gap: 7px;
  align-items: center;
  min-width: 94px;
  justify-content: end;
  color: var(--ink);
  font-weight: 800;
  white-space: nowrap;
}

.owned-check input {
  width: 20px;
  height: 20px;
  accent-color: var(--ok);
}

.shortage-box {
  margin-top: 16px;
  border: 1px solid #d69b8c;
  border-radius: 8px;
  padding: 14px 16px;
  background: var(--warn-bg);
}

.shortage-box.is-clear {
  border-color: #a8c9b5;
  background: #eef7f1;
}

.shortage-box ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding-left: 20px;
}

.shortage-box li {
  color: var(--warn);
  font-weight: 700;
}

.shortage-box.is-clear li {
  color: var(--ok);
}

.revenue-section {
  margin-top: 20px;
  padding: 22px;
}

.revenue-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.revenue-card {
  display: grid;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--surface-soft);
  min-height: 142px;
}

.revenue-card strong {
  font-size: 1rem;
}

.revenue-card p {
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.revenue-card a {
  align-self: end;
  color: var(--accent-dark);
  font-weight: 800;
  text-decoration: none;
}

.explain-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 20px 0 40px;
}

.explain-section article {
  padding: 22px;
}

.explain-section p {
  margin-bottom: 0;
  color: #39484e;
}

@media (max-width: 820px) {
  .site-header {
    display: grid;
    align-items: start;
  }

  .guideline-badge {
    width: fit-content;
  }

  .checker-layout,
  .explain-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header,
  main {
    width: min(100% - 20px, 1120px);
  }

  .site-header {
    padding-top: 24px;
  }

  .control-panel,
  .result-panel,
  .revenue-section,
  .explain-section article {
    padding: 16px;
  }

  .field-grid {
    grid-template-columns: 1fr;
  }

  .bichiku-item {
    grid-template-columns: 1fr;
  }

  .owned-check {
    justify-content: start;
  }
}