:root {
  --bg: #f6f1e8;
  --panel: #fffdf8;
  --ink: #1f1a17;
  --muted: #6f655d;
  --accent: #9d3d36;
  --line: #1f1a17;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Songti SC", "Noto Serif SC", serif;
  background:
    radial-gradient(circle at top left, rgba(157, 61, 54, 0.08), transparent 30%),
    linear-gradient(180deg, #f5efe5 0%, #efe5d6 100%);
  color: var(--ink);
}

#app {
  min-height: 100vh;
}

.shell {
  width: min(960px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.panel {
  background: var(--panel);
  border: 2px solid var(--line);
  padding: 24px;
}

.hero,
.quiz-panel,
.result-panel {
  display: grid;
  gap: 16px;
}

.hero-signature {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  justify-self: start;
  padding: 8px 12px;
  border: 2px solid var(--line);
  background: rgba(255, 253, 248, 0.85);
}

.hero-avatar {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border: 2px solid var(--line);
  background: #fff;
}

.signature-copy {
  margin: 0;
  font-size: 14px;
  color: var(--ink);
}

.eyebrow,
.preview-small {
  margin: 0;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

.lede,
.result-tagline,
.result-match,
.result-note,
.disclaimer {
  margin: 0;
  color: var(--muted);
}

.button {
  appearance: none;
  border: 2px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  padding: 12px 16px;
  font: inherit;
  cursor: pointer;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.button-primary {
  background: var(--accent);
  color: #fff8f1;
}

.preview-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.preview-card,
.question-card,
.score-card {
  border: 2px solid var(--line);
  background: var(--panel);
  padding: 14px;
}

.preview-card {
  min-height: 180px;
}

.preview-code,
.result-code {
  margin: 0;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.quiz-top,
.quiz-actions,
.score-head,
.result-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.quiz-top {
  align-items: start;
  border-bottom: 2px dashed rgba(31, 26, 23, 0.25);
  padding-bottom: 12px;
}

.quiz-list,
.score-grid {
  display: grid;
  gap: 16px;
}

.quiz-section-label {
  margin-top: 8px;
  padding-top: 8px;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.option {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  cursor: pointer;
}

.option.is-selected {
  background: #f7dfd8;
}

.score-track {
  height: 14px;
  margin-top: 8px;
  border: 1px solid var(--line);
  background: #efe5d6;
}

.score-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #52728c);
}

@media (max-width: 640px) {
  .shell {
    width: min(100vw - 20px, 100%);
    padding: 12px 0 28px;
  }

  .panel {
    padding: 16px;
  }

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

  .quiz-top,
  .quiz-actions,
  .score-head {
    flex-direction: column;
    align-items: start;
  }

  .option {
    grid-template-columns: 18px 1fr;
  }
}

@media (max-width: 1080px) {
  .preview-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}