:root {
  --bg: #f4efe7;
  --bg-strong: #efe4d4;
  --surface: rgba(255, 252, 247, 0.88);
  --surface-strong: #fffaf1;
  --surface-muted: #f1e7d9;
  --text: #23180d;
  --text-soft: #6f5a45;
  --line: rgba(81, 52, 21, 0.12);
  --accent: #146356;
  --accent-strong: #0c4b41;
  --warning: #c4682d;
  --danger: #aa3c32;
  --shadow: 0 22px 40px rgba(62, 37, 10, 0.08);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(20, 99, 86, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(196, 104, 45, 0.16), transparent 24%),
    linear-gradient(180deg, #f9f3ea 0%, var(--bg) 54%, #efe6da 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

.app-shell {
  width: min(1280px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
  padding: 28px;
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(20, 99, 86, 0.95), rgba(14, 56, 49, 0.96)),
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent);
  color: #f6eee4;
  box-shadow: var(--shadow);
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  opacity: 0.72;
}

.hero h1,
.section-head h2,
.card-head h3 {
  margin: 0;
}

.hero h1 {
  font-family: "Iowan Old Style", "Times New Roman", serif;
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.hero-copy {
  max-width: 48ch;
  margin: 14px 0 0;
  color: rgba(246, 238, 228, 0.86);
  font-size: 1.02rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  align-self: end;
}

.mini-stat {
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.mini-stat span {
  display: block;
  margin-bottom: 8px;
  font-size: 0.88rem;
  color: rgba(246, 238, 228, 0.76);
}

.mini-stat strong {
  font-size: 1.15rem;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px 0;
  backdrop-filter: blur(18px);
}

.top-nav a {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 250, 241, 0.68);
  border: 1px solid rgba(81, 52, 21, 0.08);
  white-space: nowrap;
}

.axis-control {
  display: grid;
  grid-template-columns: auto minmax(220px, 360px) auto;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.axis-control label {
  color: var(--text-soft);
  font-weight: 600;
}

.axis-control input[type="range"] {
  padding: 0;
}

.axis-control strong {
  min-width: 48px;
  text-align: right;
}

.axis-control-inline {
  width: min(460px, 100%);
  margin-left: auto;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 250, 241, 0.8);
}

main {
  display: grid;
  gap: 24px;
}

.panel {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: rgba(255, 250, 241, 0.64);
  border: 1px solid rgba(81, 52, 21, 0.08);
  box-shadow: var(--shadow);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 22px;
}

.section-copy {
  max-width: 42ch;
  margin: 0;
  color: var(--text-soft);
}

.grid {
  display: grid;
  gap: 18px;
}

.two-column {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--line);
}

.form-card,
.import-card,
.status-card,
.metrics-card {
  background: var(--surface-strong);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

label span {
  display: block;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-soft);
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(81, 52, 21, 0.16);
  background: rgba(255, 255, 255, 0.74);
  color: var(--text);
}

.month-picker {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 10px;
}

.month-picker select {
  background: rgba(255, 255, 255, 0.86);
}

textarea {
  resize: vertical;
  min-height: 160px;
}

.button-row {
  display: flex;
  gap: 12px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.button {
  margin-top: 18px;
  padding: 12px 18px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #f9f7f3;
  cursor: pointer;
}

.button-secondary {
  background: #ded0bd;
  color: var(--text);
}

.card-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 18px;
}

.card-head p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

#comparison-summary.metrics-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.metric {
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(248, 240, 229, 0.9));
  border: 1px solid var(--line);
  overflow: hidden;
}

.metric .label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.86rem;
  color: var(--text-soft);
}

.metric strong {
  display: block;
  font-size: clamp(0.92rem, 1.4vw, 1.95rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.metric small {
  display: block;
  margin-top: 6px;
  color: var(--text-soft);
  overflow-wrap: anywhere;
}

.metric.negative strong {
  color: var(--danger);
}

.metric.positive strong {
  color: var(--accent);
}

.chart {
  min-height: 0;
  position: relative;
}

.chart svg {
  width: 100%;
  height: var(--chart-height, clamp(360px, 40vw, 620px));
  display: block;
}

.legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
  color: var(--text-soft);
  font-size: 0.9rem;
}

.legend-item {
  display: inline-flex;
  gap: 8px;
  align-items: center;
}

.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 999px;
}

.table-wrap {
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 880px;
}

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid rgba(81, 52, 21, 0.08);
  text-align: right;
  white-space: nowrap;
}

th:first-child,
td:first-child {
  text-align: left;
}

th:last-child,
td:last-child {
  text-align: center;
}

.year-row td {
  padding: 0;
  background: rgba(236, 223, 205, 0.45);
  white-space: normal;
}

.year-toggle {
  width: 100%;
  margin: 0;
  padding: 12px 14px;
  border: 0;
  border-radius: 0;
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 10px;
  text-align: left;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.year-toggle:hover {
  background: rgba(255, 255, 255, 0.42);
}

.year-toggle .chevron {
  font-size: 0.88rem;
  color: var(--text-soft);
}

.year-toggle .year-title {
  font-weight: 700;
}

.year-toggle .year-summary {
  color: var(--text-soft);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.month-row td:first-child {
  padding-left: 24px;
}

.edit-button,
.table-card button[data-edit-date] {
  margin: 0;
  padding: 7px 12px;
  border: 1px solid rgba(20, 99, 86, 0.16);
  border-radius: 999px;
  background: rgba(20, 99, 86, 0.08);
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1;
  transition:
    background 120ms ease,
    border-color 120ms ease,
    color 120ms ease,
    transform 120ms ease;
}

.edit-button:hover,
.table-card button[data-edit-date]:hover {
  background: rgba(20, 99, 86, 0.14);
  border-color: rgba(20, 99, 86, 0.24);
}

.edit-button:active,
.table-card button[data-edit-date]:active {
  transform: translateY(1px);
}

.edit-button:focus-visible,
.table-card button[data-edit-date]:focus-visible {
  outline: 2px solid rgba(20, 99, 86, 0.22);
  outline-offset: 2px;
}

.chart-tooltip {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 3;
  min-width: 150px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(81, 52, 21, 0.18);
  background: rgba(33, 25, 16, 0.92);
  color: #f8f3eb;
  font-size: 0.84rem;
  line-height: 1.35;
  pointer-events: none;
  opacity: 0;
  transform: none;
  transition: opacity 120ms ease;
  white-space: nowrap;
}

.chart-tooltip strong {
  font-size: 0.94rem;
  margin-left: auto;
}

.chart-tooltip.visible {
  opacity: 1;
}

.tooltip-date {
  margin-bottom: 8px;
  color: rgba(248, 243, 235, 0.86);
  font-size: 0.82rem;
}

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

.tooltip-row span,
.tooltip-row strong,
.tooltip-date {
  white-space: nowrap;
}

.tooltip-row + .tooltip-row {
  margin-top: 6px;
}

.tooltip-marker {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  flex: 0 0 8px;
}

.hover-series-dot {
  pointer-events: none;
}

.hover-guide-line {
  stroke: rgba(81, 52, 21, 0.45);
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
  pointer-events: none;
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 240px;
  border-radius: 18px;
  background: rgba(238, 225, 208, 0.42);
  color: var(--text-soft);
}

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

.status-item {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(81, 52, 21, 0.08);
}

.status-item span,
.status-item strong {
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
}

#file-storage-hint {
  max-width: none;
  width: 100%;
  white-space: nowrap;
  overflow: visible;
  text-overflow: clip;
}

.status-item:last-child {
  border-bottom: 0;
}

@media (max-width: 1080px) {
  .hero,
  .two-column,
  .section-head,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: grid;
    align-items: start;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

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

  .metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100vw - 16px, 1280px);
    padding-top: 12px;
    padding-bottom: 28px;
  }

  .hero,
  .panel,
  .card {
    padding: 16px;
    border-radius: 20px;
  }

  .hero {
    gap: 18px;
  }

  .hero h1 {
    font-size: clamp(1.9rem, 9vw, 2.8rem);
    line-height: 0.98;
  }

  .hero-copy {
    font-size: 0.94rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .mini-stat {
    padding: 14px;
  }

  .top-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 12px 0 14px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .top-nav::-webkit-scrollbar {
    display: none;
  }

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

  #comparison-summary.metrics-grid {
    grid-template-columns: 1fr;
  }

  .metric {
    padding: 16px;
  }

  .metric strong {
    font-size: clamp(1.1rem, 9vw, 2rem);
    line-height: 1;
  }

  .metric small {
    margin-top: 8px;
    overflow-wrap: anywhere;
  }

  .top-nav {
    gap: 8px;
  }

  .top-nav a {
    font-size: 0.92rem;
    padding: 10px 14px;
    flex: 0 0 auto;
  }

  .section-head,
  .card-head {
    display: grid;
    gap: 10px;
    justify-content: start;
  }

  .section-copy,
  .card-head p,
  #file-storage-hint,
  #cloud-sync-hint {
    max-width: none;
    white-space: normal;
    overflow-wrap: anywhere;
  }

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

  .button-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .button {
    width: 100%;
    margin-top: 0;
    text-align: center;
  }

  .axis-control {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .axis-control strong {
    text-align: left;
  }

  .axis-control-inline {
    width: 100%;
    margin-left: 0;
  }

  .chart svg {
    height: var(--chart-height, 320px);
  }

  .legend {
    gap: 10px;
    font-size: 0.84rem;
  }

  .legend-item {
    flex: 0 0 auto;
  }

  .chart-tooltip {
    max-width: min(78vw, 260px);
    min-width: 0;
    white-space: normal;
  }

  .tooltip-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 6px;
  }

  .tooltip-row span,
  .tooltip-row strong,
  .tooltip-date {
    white-space: normal;
  }

  .table-wrap {
    margin: 0 -4px;
    padding-bottom: 2px;
  }

  table {
    min-width: 760px;
  }

  .year-toggle {
    grid-template-columns: auto 1fr;
    row-gap: 6px;
  }

  .year-toggle .year-summary {
    grid-column: 1 / -1;
    font-size: 0.82rem;
  }

  .status-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .status-item span,
  .status-item strong {
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 420px) {
  .app-shell {
    width: min(100vw - 12px, 1280px);
  }

  .hero,
  .panel,
  .card {
    padding: 14px;
    border-radius: 18px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .eyebrow,
  .section-kicker {
    letter-spacing: 0.14em;
    font-size: 11px;
  }

  .metric strong {
    font-size: clamp(1rem, 10vw, 1.7rem);
  }

  .chart svg {
    height: var(--chart-height, 280px);
  }
}