:root {
  --bg: #f6efe5;
  --surface: rgba(255, 250, 244, 0.88);
  --surface-strong: #fffaf4;
  --surface-border: rgba(15, 118, 110, 0.12);
  --text: #17312d;
  --muted: #516965;
  --primary: #0f766e;
  --primary-strong: #0b5b56;
  --secondary: #bf6b38;
  --secondary-soft: rgba(191, 107, 56, 0.14);
  --success: #1f8d62;
  --danger: #b42318;
  --shadow: 0 28px 80px rgba(43, 61, 58, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(191, 107, 56, 0.16), transparent 24%),
    linear-gradient(180deg, #fcf7f0 0%, var(--bg) 55%, #efe2d2 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 118, 110, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 118, 110, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.38), transparent 90%);
}

.page-glow {
  position: fixed;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  filter: blur(72px);
  opacity: 0.4;
  pointer-events: none;
}

.page-glow-left {
  top: -5rem;
  left: -6rem;
  background: rgba(15, 118, 110, 0.28);
}

.page-glow-right {
  right: -4rem;
  bottom: 12rem;
  background: rgba(191, 107, 56, 0.24);
}

.app-shell {
  position: relative;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

.hero {
  padding: 16px 2px 28px;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 12px;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
}

.hero h1,
.panel-header h2 {
  margin: 0;
  line-height: 1.05;
}

.hero h1 {
  max-width: 10ch;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  letter-spacing: -0.04em;
}

.hero-copy {
  max-width: 60rem;
  margin: 16px 0 0;
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--muted);
}

.meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.quick-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.quick-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(15, 118, 110, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--text);
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.quick-link:hover {
  transform: translateY(-1px);
  border-color: rgba(15, 118, 110, 0.3);
  background: rgba(255, 255, 255, 0.84);
}

.noscript-box {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(191, 107, 56, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(191, 107, 56, 0.1);
  color: var(--text);
  line-height: 1.75;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid rgba(15, 118, 110, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--muted);
  font-size: 0.94rem;
  backdrop-filter: blur(12px);
}

.pill-accent {
  color: var(--primary-strong);
  background: rgba(15, 118, 110, 0.12);
}

.panel {
  margin-top: 18px;
  padding: 28px;
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.panel-note {
  max-width: 20rem;
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.7;
  color: var(--muted);
}

.age-form {
  display: grid;
  gap: 20px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.fieldset {
  min-width: 0;
  margin: 0;
  padding: 22px;
  border: 1px solid rgba(15, 118, 110, 0.12);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 250, 244, 0.88));
}

.fieldset legend {
  padding: 0 8px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-strong);
}

.field-label {
  display: block;
  margin-bottom: 10px;
  font-size: 1rem;
  font-weight: 700;
}

input[type="date"] {
  width: 100%;
  min-height: 54px;
  padding: 0 16px;
  border: 1px solid rgba(23, 49, 45, 0.16);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  color: var(--text);
  font: inherit;
}

.date-parts {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 12px;
}

.date-part {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding: 0 14px 0 16px;
  border: 1px solid rgba(23, 49, 45, 0.16);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
}

.date-part:focus-within {
  outline: 3px solid rgba(15, 118, 110, 0.24);
  outline-offset: 2px;
}

.date-part-input {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 1rem;
}

.date-part-input::placeholder {
  color: #88a09c;
}

.date-part-input:focus {
  outline: none;
}

.date-part-input-year {
  letter-spacing: 0.08em;
}

.date-part-unit {
  flex: 0 0 auto;
  margin-left: 10px;
  color: var(--muted);
  font-size: 0.96rem;
  white-space: nowrap;
}

input[type="date"]:focus-visible,
.button:focus-visible,
.toggle input:focus-visible + span {
  outline: 3px solid rgba(15, 118, 110, 0.24);
  outline-offset: 2px;
}

.field-hint {
  margin: 12px 0 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--muted);
}

.field-hint-compact {
  margin-top: 8px;
  font-size: 0.88rem;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  font-size: 0.97rem;
  color: var(--text);
  cursor: pointer;
}

.toggle input {
  width: 20px;
  height: 20px;
  margin: 0;
  accent-color: var(--primary);
}

.toggle span {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
}

.inline-actions,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.inline-actions {
  margin-top: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);
  color: #fff;
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.22);
}

.button-secondary {
  border-color: rgba(15, 118, 110, 0.16);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
}

.button-ghost {
  border-color: rgba(15, 118, 110, 0.16);
  background: rgba(15, 118, 110, 0.05);
  color: var(--primary-strong);
}

.form-error {
  padding: 14px 16px;
  border: 1px solid rgba(180, 35, 24, 0.18);
  border-radius: var(--radius-md);
  background: rgba(180, 35, 24, 0.08);
  color: var(--danger);
  font-size: 0.95rem;
  line-height: 1.7;
}

.results-header {
  align-items: center;
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: 26px;
  border: 1px dashed rgba(15, 118, 110, 0.22);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.34);
  text-align: center;
}

.empty-state h3 {
  margin: 0;
  font-size: 1.26rem;
}

.empty-state p {
  max-width: 40rem;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.results-content {
  display: grid;
  gap: 18px;
}

.summary-sentence {
  margin: 0;
  padding: 18px 20px;
  border-left: 4px solid var(--secondary);
  border-radius: var(--radius-md);
  background: rgba(191, 107, 56, 0.08);
  font-size: 1.02rem;
  line-height: 1.78;
}

.summary-grid,
.detail-grid {
  display: grid;
  gap: 16px;
}

.summary-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.detail-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric-card,
.detail-card {
  padding: 22px;
  border: 1px solid rgba(15, 118, 110, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.74);
}

.metric-card-primary {
  background:
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.14), transparent 42%),
    linear-gradient(180deg, rgba(15, 118, 110, 0.1), rgba(255, 255, 255, 0.82));
}

.metric-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.metric-value {
  margin: 10px 0 0;
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.metric-value-small {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
}

.metric-caption {
  min-height: 44px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.detail-card h3 {
  margin: 0;
  font-size: 1.06rem;
}

.article-grid,
.faq-grid {
  display: grid;
  gap: 16px;
}

.article-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-grid + .article-grid {
  margin-top: 16px;
}

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

.text-card,
.faq-item {
  padding: 22px;
  border: 1px solid rgba(15, 118, 110, 0.12);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.74);
}

.text-card h3,
.faq-item h3 {
  margin: 0;
  font-size: 1.08rem;
}

.text-card p,
.faq-item p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.85;
}

.scene-list {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.scene-list li + li {
  margin-top: 8px;
}

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

.detail-emphasis {
  margin: 14px 0 0;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.detail-text {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.detail-list,
.guidance-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.detail-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 40px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(15, 118, 110, 0.08);
}

.detail-list li:last-child {
  border-bottom: 0;
}

.detail-list span {
  color: var(--muted);
}

.detail-list strong {
  font-size: 1.12rem;
}

.progress-block {
  margin-top: 16px;
}

.progress-track {
  height: 14px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.12);
}

.progress-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--secondary) 0%, var(--primary) 100%);
  transition: width 480ms ease;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 12px;
  font-size: 0.93rem;
  color: var(--muted);
}

.detail-card-wide {
  grid-column: 1 / -1;
}

.guidance-list li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.85;
}

.guidance-list li + li {
  margin-top: 6px;
}

.guidance-list li::before {
  content: "";
  position: absolute;
  top: 0.82em;
  left: 2px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
}

.copy-status {
  min-height: 1.6em;
  margin: 14px 0 0;
  color: var(--success);
  font-size: 0.94rem;
}

.site-footer {
  padding: 18px 4px 0;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
  text-align: center;
}

[hidden] {
  display: none !important;
}

@media (max-width: 980px) {
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .detail-grid,
  .article-grid,
  .article-grid-secondary,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .panel-header,
  .results-header,
  .progress-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 20px, 1120px);
    padding: 28px 0 48px;
  }

  .panel {
    padding: 20px;
    border-radius: 24px;
  }

  .form-grid,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .date-parts {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .metric-card,
  .detail-card,
  .text-card,
  .faq-item,
  .fieldset {
    padding: 18px;
  }

  .button,
  input[type="date"] {
    min-height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0ms !important;
  }
}