:root {
  --color-primary: #ec4899;
  --color-on-primary: #ffffff;
  --color-secondary: #f9a8d4;
  --color-accent: #8b5cf6;
  --color-background: #fdf2f8;
  --color-foreground: #831843;
  --color-muted: #f1eef5;
  --color-border: #fbcfe8;
  --color-ring: #ec4899;
  --color-action: #9d174d;
  --color-card: #ffffff;
  --shadow: 0 18px 50px rgba(131, 24, 67, 0.1);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  font-family: var(--font-sans);
  color: var(--color-foreground);
  background:
    radial-gradient(circle at 100% 0%, rgba(249, 168, 212, 0.55), transparent 34%),
    radial-gradient(circle at 0% 100%, rgba(139, 92, 246, 0.12), transparent 28%),
    var(--color-background);
  -webkit-font-smoothing: antialiased;
}

button, a { font: inherit; }

.page {
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: max(20px, env(safe-area-inset-top)) 16px max(28px, env(safe-area-inset-bottom));
}

.stack {
  width: 100%;
  max-width: 440px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sheet {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 28px 22px 22px;
}

.facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 8px;
}

.fact {
  min-height: 84px;
  margin: 0;
  padding: 14px 12px;
  border-radius: 16px;
  background: #fdf2f8;
  border: 1px solid var(--color-border);
}

.fact strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
}

.fact span {
  color: #6b2144;
  font-size: 13px;
  line-height: 1.5;
}

.ghost {
  min-height: 48px;
  width: 100%;
  margin-top: 10px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-action);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
}

.match {
  margin: 12px 0 0;
  padding: 14px;
  border-radius: 16px;
  background: #fdf2f8;
  color: #6b2144;
  font-size: 14px;
  line-height: 1.7;
}

.chapter {
  margin: 0;
  color: var(--color-action);
  font-size: 13px;
  font-weight: 600;
}

.hint {
  margin: 12px 0 0;
  color: #64748b;
  font-size: 13px;
  text-align: center;
}

.voice {
  margin: 16px 0 0;
  padding: 14px 14px;
  border-radius: 16px;
  background: #fdf2f8;
  font-size: 16px;
  line-height: 1.7;
}

.voice span {
  display: block;
  margin-bottom: 4px;
  color: var(--color-action);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.mini-grid {
  display: grid;
  gap: 10px;
}

.mini {
  margin: 0;
  padding: 14px;
  border-radius: 16px;
  background: #fdf2f8;
}

.mini strong {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

.mini p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
}

.lines {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.lines li {
  margin: 0;
  padding: 14px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--color-border);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.6;
}

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

.sheet-actions .start,
.sheet-actions .ghost {
  flex: 1;
  width: auto;
  margin-top: 0;
}

.save-view {
  width: 100%;
  border-radius: 18px;
}

.save-view img {
  display: block;
  width: 100%;
  border-radius: 18px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--color-action);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
}

h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.rule {
  width: 36px;
  height: 2px;
  margin: 18px 0;
  border: 0;
  background: var(--color-primary);
}

.lead, .summary, .section p, .close {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
}

.lead { color: #6b2144; }

.start, .nav button {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 200ms var(--ease), background-color 200ms var(--ease), opacity 200ms var(--ease);
}

.start {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin-top: 28px;
  background: var(--color-action);
  color: var(--color-on-primary);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
}

.start:focus-visible,
.nav button:focus-visible,
.option:focus-visible,
.text-link:focus-visible {
  outline: 3px solid var(--color-ring);
  outline-offset: 3px;
}

.duration, .disclaimer {
  margin: 14px 0 0;
  color: #64748b;
  font-size: 13px;
  line-height: 1.6;
  text-align: center;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}

.step-no {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.step-total {
  color: #64748b;
  font-size: 13px;
  font-weight: 500;
}

.track {
  height: 8px;
  border-radius: 999px;
  background: #fce7f3;
  overflow: hidden;
}

.bar {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform-origin: left center;
}

h2, .section-title {
  margin: 22px 0 18px;
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.45;
}

.section-title {
  margin: 0 0 14px;
  font-size: 22px;
}

.option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 56px;
  margin: 0 0 10px;
  padding: 12px 14px;
  text-align: left;
  border-radius: 18px;
  border: 1px solid var(--color-border);
  background: #fff;
  color: var(--color-foreground);
  cursor: pointer;
  transition: transform 200ms var(--ease), background-color 200ms var(--ease), border-color 200ms var(--ease), color 200ms var(--ease);
}

.letter {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #fce7f3;
  color: var(--color-action);
  font-size: 13px;
  font-weight: 700;
}

.option-text {
  font-size: 16px;
  line-height: 1.5;
}

.option[aria-pressed="true"] {
  background: var(--color-action);
  border-color: var(--color-action);
  color: var(--color-on-primary);
}

.option[aria-pressed="true"] .letter {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.nav {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.nav button {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
}

.prev {
  background: #fce7f3;
  color: var(--color-action);
}

.next {
  background: var(--color-action);
  color: var(--color-on-primary);
}

.next:disabled, .prev:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

.start:active, .nav button:active, .option:active {
  transform: scale(0.98);
}

.poster {
  margin: -32px -22px 22px;
  padding: 36px 22px 28px;
  border-radius: 32px 32px 0 0;
  background:
    radial-gradient(circle at 90% 0%, rgba(139, 92, 246, 0.18), transparent 42%),
    linear-gradient(180deg, #fce7f3 0%, #fff 100%);
}

.poster .eyebrow { margin-bottom: 12px; }

.slogan {
  margin: 10px 0 0;
  color: var(--color-action);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.summary { margin-top: 4px; }

.indexes { margin: 26px 0 8px; }

.index { margin: 0 0 16px; }

.index-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
}

.index-head span:last-child {
  font-variant-numeric: tabular-nums;
  color: var(--color-action);
}

.index-note {
  margin: 8px 0 0;
  color: #6b2144;
  font-size: 14px;
  line-height: 1.6;
}

.section {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.section h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
}

.close {
  margin-top: 22px;
  padding: 16px;
  border-radius: 18px;
  background: #fdf2f8;
}

.links {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 18px;
}

.text-link {
  min-height: 44px;
  padding: 10px 12px;
  border: 0;
  background: transparent;
  color: var(--color-action);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (min-width: 800px) {
  .page { padding-top: 48px; padding-bottom: 48px; }
  .stack { align-self: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}