:root {
  color-scheme: light;
  --ink: #251f1b;
  --muted: #756d62;
  --paper: #f8f3e8;
  --surface: #fffaf0;
  --line: #ded2bd;
  --gold: #a67c2e;
  --cinnabar: #9f352a;
  --pine: #2f5c4d;
  --blue: #3f638c;
  --shadow: 0 18px 40px rgba(57, 44, 27, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(rgba(248, 243, 232, 0.9), rgba(248, 243, 232, 0.98)),
    radial-gradient(circle at 20% 20%, rgba(166, 124, 46, 0.18), transparent 34%),
    linear-gradient(135deg, #d6dfd5 0%, #efe3cf 50%, #cfd9df 100%);
  color: var(--ink);
  font-family: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
}

button,
input,
textarea {
  font: inherit;
}

.app-shell {
  width: min(100%, 520px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 22px 16px 30px;
}

.top-bar,
.mode-strip,
.panel,
.result-summary,
.transmission-card,
.upgrade-card {
  border: 1px solid rgba(80, 59, 35, 0.14);
  background: rgba(255, 250, 240, 0.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 104px;
  padding: 18px;
  border-radius: 8px;
}

.kicker {
  margin: 0 0 6px;
  color: var(--cinnabar);
  font-size: 13px;
  letter-spacing: 0;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: 0;
}

h2 {
  font-size: 22px;
  line-height: 1.2;
}

.icon-button {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fffaf0;
  color: var(--pine);
  font-size: 24px;
}

.mode-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
  padding: 8px;
  border-radius: 8px;
}

.mode-button {
  min-height: 58px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
}

.mode-button span {
  display: block;
  margin-top: 3px;
  font-size: 13px;
}

.mode-button.active {
  background: var(--pine);
  color: #fffdf5;
}

.panel {
  margin-top: 14px;
  padding: 16px;
  border-radius: 8px;
}

.field-label,
.number-grid label {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

textarea,
input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--ink);
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 90px;
  margin-top: 8px;
  padding: 12px;
  line-height: 1.55;
}

input {
  height: 46px;
  margin-top: 7px;
  padding: 0 10px;
  font-size: 18px;
  text-align: center;
}

textarea:focus,
input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(166, 124, 46, 0.14);
}

.number-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 10px;
  margin-top: 16px;
}

.primary-button,
.secondary-button,
.upgrade-card button {
  min-height: 48px;
  border: 0;
  border-radius: 6px;
}

.primary-button,
.upgrade-card button {
  background: var(--cinnabar);
  color: #fffdf8;
}

.secondary-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--pine);
}

.result-summary {
  margin-top: 14px;
  padding: 16px;
  border-radius: 8px;
}

.result-summary span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.result-summary strong {
  display: block;
  margin: 6px 0;
  color: var(--pine);
  font-size: 24px;
  font-weight: 700;
}

.result-summary p,
.upgrade-card p {
  color: var(--muted);
  line-height: 1.55;
}

.transmission-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.transmission-card {
  position: relative;
  overflow: hidden;
  padding: 16px;
  border-radius: 8px;
}

.transmission-card.locked {
  opacity: 0.72;
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.stage {
  color: var(--cinnabar);
  font-size: 13px;
}

.palace-name {
  margin-top: 4px;
  font-size: 30px;
  line-height: 1.1;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.tag {
  padding: 5px 8px;
  border: 1px solid rgba(47, 92, 77, 0.18);
  border-radius: 999px;
  background: rgba(47, 92, 77, 0.08);
  color: var(--pine);
  font-size: 12px;
}

.meaning {
  margin-top: 12px;
  color: var(--ink);
  line-height: 1.7;
}

.pro-note {
  margin-top: 10px;
  color: var(--blue);
  line-height: 1.65;
}

.lock-label {
  align-self: flex-start;
  padding: 6px 9px;
  border-radius: 999px;
  background: rgba(159, 53, 42, 0.1);
  color: var(--cinnabar);
  font-size: 12px;
  white-space: nowrap;
}

.upgrade-card {
  display: grid;
  gap: 14px;
  margin-top: 14px;
  padding: 16px;
  border-radius: 8px;
}

.legal-shell {
  width: min(100%, 860px);
  margin: 0 auto;
  padding: 24px 16px 44px;
}

.legal-nav {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-bottom: 18px;
}

.legal-nav a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 0 13px;
  border: 1px solid rgba(80, 59, 35, 0.14);
  border-radius: 999px;
  background: rgba(255, 250, 240, 0.76);
  color: var(--pine);
  text-decoration: none;
}

.legal-nav a[aria-current="page"] {
  background: var(--pine);
  color: #fffdf5;
}

.legal-hero,
.legal-card {
  border: 1px solid rgba(80, 59, 35, 0.14);
  border-radius: 8px;
  background: rgba(255, 250, 240, 0.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.legal-hero {
  padding: 28px;
}

.legal-hero h1 {
  margin-bottom: 12px;
}

.legal-hero p,
.legal-card p {
  color: var(--muted);
  line-height: 1.75;
}

.legal-card {
  margin-top: 14px;
  padding: 22px;
}

.legal-card h2 {
  margin-bottom: 12px;
  color: var(--ink);
}

.legal-card h3 {
  margin: 18px 0 6px;
  color: var(--pine);
  font-size: 18px;
  line-height: 1.3;
}

.legal-card p + p {
  margin-top: 10px;
}

.legal-card a {
  color: var(--cinnabar);
  font-weight: 700;
  text-decoration: none;
}

.legal-card a:hover {
  text-decoration: underline;
}

.legal-updated {
  margin-top: 14px;
  color: var(--pine) !important;
  font-size: 14px;
}

@media (max-width: 390px) {
  .app-shell {
    padding-inline: 12px;
  }

  h1 {
    font-size: 30px;
  }

  .number-grid,
  .actions {
    grid-template-columns: 1fr;
  }

  .legal-shell {
    padding-inline: 12px;
  }

  .legal-nav {
    justify-content: stretch;
  }

  .legal-nav a {
    flex: 1;
    justify-content: center;
  }

  .legal-hero,
  .legal-card {
    padding: 18px;
  }
}