:root {
  --paper: #f3ead7;
  --paper-deep: #e7dcc4;
  --card: #fffaf0;
  --ink: #1d140f;
  --muted: #6d5c4d;
  --line: #d6c4a8;
  --cinnabar: #b4332a;
  --cinnabar-deep: #8c241d;
  --gold: #b8893a;
  --gold-soft: #f0e0bd;
  --today: #b4332a;
  --shadow: 0 18px 40px rgba(62, 38, 18, 0.1);
  --sans: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Source Serif 4", Georgia, "Iowan Old Style", serif;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  min-height: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.55), transparent 28%),
    repeating-linear-gradient(
      90deg,
      transparent 0 47px,
      rgba(180, 51, 42, 0.035) 47px 48px
    ),
    var(--paper);
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: calc(24px + env(safe-area-inset-top)) 0 calc(48px + env(safe-area-inset-bottom));
}

.install-banner {
  display: none;
  gap: 16px;
  align-items: start;
  justify-content: space-between;
  padding: 18px;
  margin-bottom: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.install-banner.is-visible {
  display: flex;
}

.install-banner h2 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 1.2rem;
}

.install-banner p,
.install-steps {
  margin: 0;
  color: var(--muted);
}

.install-steps {
  margin-top: 10px;
  padding-left: 1.2em;
  line-height: 1.55;
}

.install-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

@media (display-mode: standalone) {
  .install-banner {
    display: none !important;
  }
}

.hero {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  align-items: center;
  margin-bottom: 28px;
}

.seal {
  margin: 0;
  width: 92px;
  height: 92px;
  display: grid;
  place-items: center;
  border: 3px solid var(--cinnabar);
  color: var(--cinnabar);
  font-family: var(--serif);
  font-size: 18px;
  letter-spacing: 0.04em;
  transform: rotate(-6deg);
  background: rgba(255, 250, 240, 0.8);
  box-shadow: inset 0 0 0 5px rgba(180, 51, 42, 0.12);
}

.hero-copy h1 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.hero-copy p {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.55;
}

.converters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.panel,
.result,
.almanac {
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.panel {
  padding: 22px;
}

.panel h2,
.almanac h2,
.result h2 {
  margin: 0 0 6px;
  font-family: var(--serif);
  font-size: 1.35rem;
}

.hint,
.subtitle,
.legend,
footer {
  color: var(--muted);
}

.hint {
  margin: 0 0 18px;
  font-size: 0.95rem;
}

.panel .field:first-of-type {
  margin-top: 10px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.field span {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  min-height: 46px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 16px;
}

input:focus,
select:focus,
button:focus-visible {
  outline: 3px solid rgba(184, 137, 58, 0.45);
  outline-offset: 2px;
}

.lunar-fields {
  display: grid;
  grid-template-columns: 0.9fr 1.2fr 0.9fr;
  gap: 10px;
  margin-top: 10px;
}

.lunar-fields .field,
.lunar-fields .field:first-of-type {
  margin: 0;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

button {
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  background: var(--cinnabar);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--cinnabar-deep);
}

button.ghost,
.view-toggle button,
.nav button {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

button.ghost:hover,
.view-toggle button:hover,
.nav button:hover {
  background: var(--paper-deep);
}

.result {
  margin-top: 18px;
  padding: 24px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.result-main .kicker {
  margin: 0 0 4px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.result-main h2 {
  margin: 4px 0 8px;
  font-family: var(--serif);
  font-size: clamp(1.15rem, 3.2vw, 1.85rem);
  line-height: 1.35;
}

.result-main .zh {
  margin: 0;
  font-size: 1.05rem;
  color: var(--muted);
}

.result-main .en {
  margin: 0;
  font-size: 1.15rem;
}

.facts {
  display: grid;
  gap: 10px;
  padding: 16px;
  background: linear-gradient(180deg, #fff, var(--gold-soft));
  border: 1px solid var(--line);
}

.facts div {
  display: grid;
  gap: 2px;
}

.facts dt {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.facts dd {
  margin: 0;
  font-size: 1.08rem;
}

.almanac {
  margin-top: 18px;
  padding: 22px;
}

.almanac-bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.subtitle {
  margin: 0;
}

.almanac-controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.view-toggle {
  display: flex;
}

.view-toggle button.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav h3 {
  margin: 0;
  min-width: 180px;
  text-align: center;
  font-family: var(--serif);
  font-size: 1.2rem;
}

.nav button {
  width: 42px;
  min-height: 42px;
  padding: 0;
  font-size: 1.4rem;
}

.wd-short {
  display: none;
}

.calendar {
  min-width: 0;
  max-width: 100%;
}

.weekdays,
.days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
  width: 100%;
}

.weekdays span {
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 6px;
}

.day {
  min-height: 84px;
  padding: 8px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.55);
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  text-align: left;
  color: inherit;
  width: 100%;
}

.day:hover {
  border-color: var(--gold);
}

.day.is-outside {
  opacity: 0.38;
}

.day.is-today .num {
  color: #fff;
  background: var(--today);
}

.day.is-selected {
  border-color: var(--gold);
  background: var(--gold-soft);
  box-shadow: inset 0 0 0 1px var(--gold);
}

.num {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  font-weight: 700;
  border-radius: 50%;
}

.lunar-day {
  font-size: 0.78rem;
  color: var(--cinnabar-deep);
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
}

.tag {
  font-size: 0.72rem;
  color: var(--gold);
  font-weight: 700;
}

.year-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: start;
}

.mini {
  padding: 8px;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid var(--line);
}

.mini h3 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 1rem;
}

.mini .weekdays span {
  font-size: 0.65rem;
}

.mini .days {
  gap: 3px;
}

.mini .day,
.day.is-compact {
  min-height: 48px;
  padding: 4px 2px;
  gap: 1px;
  align-items: center;
  text-align: center;
}

.mini .num,
.day.is-compact .num {
  width: 18px;
  height: 18px;
  font-size: 0.75rem;
}

.mini .lunar-day,
.day.is-compact .lunar-day {
  font-size: 0.7rem;
  line-height: 1.1;
}

.legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 16px 0 0;
  font-size: 0.9rem;
}

.dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 6px;
  border-radius: 50%;
}

.dot.today {
  background: var(--today);
}

.dot.selected {
  background: var(--gold);
}

footer {
  margin-top: 28px;
  font-size: 0.92rem;
}

code {
  font-size: 0.9em;
}

@media (max-width: 1100px) {
  .year-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .page {
    width: min(1120px, calc(100% - 16px));
  }

  .install-banner,
  .install-actions {
    flex-direction: column;
  }

  .hero,
  .converters,
  .result,
  .lunar-fields,
  .year-grid {
    grid-template-columns: 1fr;
  }

  .seal {
    width: 64px;
    height: 64px;
    font-size: 16px;
  }

  .almanac {
    padding: 12px 10px;
  }

  .almanac-bar,
  .almanac-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
  }

  .nav h3 {
    min-width: 0;
    flex: 1;
    font-size: 1rem;
  }

  .wd-full {
    display: none;
  }

  .wd-short {
    display: inline;
  }

  .weekdays span {
    font-size: 0.7rem;
    letter-spacing: 0;
    padding-bottom: 2px;
  }

  .weekdays,
  .days {
    gap: 2px;
  }

  .day,
  button.day {
    min-height: 52px;
    padding: 4px 1px;
    gap: 1px;
    align-items: center;
    text-align: center;
    overflow: hidden;
  }

  .num {
    width: 22px;
    height: 22px;
    font-size: 0.82rem;
  }

  .lunar-day {
    font-size: 0.62rem;
    width: 100%;
  }

  .tag {
    display: none;
  }

  .legend {
    font-size: 0.8rem;
    gap: 10px;
  }

  .mini .day,
  .day.is-compact {
    min-height: 40px;
  }
}