:root {
  --bg: #fafafa;
  --card: #ffffff;
  --text: #0a0a0a;
  --muted: #71717a;
  --btn: #171717;
  --btn-text: #ffffff;
  --line: #00000014;
  --accent: #0a84ff;
  --mist-a: #d1def9;
  --mist-b: #ecebfc;
  --radius: 0.625rem;
  --radius-panel: 1.25rem;
  --font-serif-en: "Playfair Display", Georgia, serif;
  --font-serif-zh: "Noto Serif SC", "Songti SC", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 520px at 92% 6%, var(--mist-a), transparent 58%),
    radial-gradient(720px 420px at 78% 0%, var(--mist-b), transparent 55%),
    var(--bg);
}

.view {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  position: relative;
}

.view[hidden] { display: none !important; }

/* 仅顶栏：悬浮 pill + 毛玻璃 */
.topbar {
  position: sticky;
  top: 0.85rem;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0.85rem auto 0;
  padding: 0.55rem 0.9rem;
  width: fit-content;
  max-width: calc(100% - 0.5rem);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
}

.topbar.compact {
  width: 100%;
  max-width: 100%;
  justify-content: space-between;
}

.brand-mark {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  font-weight: 600;
}

.brand-name {
  font-family: var(--font-serif-zh);
  font-size: 0.9rem;
  font-weight: 500;
}

.link-back {
  border: none;
  background: transparent;
  font-size: 1.05rem;
  color: var(--text);
  cursor: pointer;
  padding: 0.15rem 0.35rem;
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4.5rem 0 5rem;
  gap: 0.9rem;
}

.watermark {
  position: absolute;
  left: 50%;
  top: 42%;
  transform: translate(-50%, -50%);
  font-family: var(--font-serif-zh);
  font-size: clamp(7rem, 28vw, 12rem);
  font-weight: 600;
  color: rgba(0, 0, 0, 0.035);
  pointer-events: none;
  user-select: none;
  letter-spacing: 0.08em;
  z-index: 0;
}

.hero > * { position: relative; z-index: 1; }

.eyebrow {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  font-weight: 500;
}

.hero-title {
  margin: 0.15rem 0 0;
  font-family: var(--font-serif-zh);
  font-size: clamp(1.75rem, 5.5vw, 2.55rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

.hero-sub {
  margin: 0.35rem 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
  max-width: 26rem;
}

.btn-primary {
  appearance: none;
  border: none;
  background: var(--btn);
  color: var(--btn-text);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.85rem 1.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { opacity: 0.84; }

.btn-ghost {
  appearance: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-size: 0.9rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  cursor: pointer;
}

.hero-note {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
}

.site-footer {
  text-align: center;
  font-size: 0.72rem;
  color: var(--muted);
  padding: 1.5rem 0 0.5rem;
}

.progress-track {
  height: 1.5px;
  background: var(--line);
  border-radius: 999px;
  overflow: hidden;
  margin: 1.25rem 0 0.5rem;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--text);
  transition: width 0.25s ease;
}

.progress-label {
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.quiz-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 2.5rem 0 3rem;
  max-width: 34rem;
  margin: 0 auto;
  width: 100%;
}

.quiz-q {
  font-family: var(--font-serif-zh);
  font-size: clamp(1.15rem, 3.5vw, 1.45rem);
  font-weight: 500;
  line-height: 1.55;
  margin: 0.6rem 0 2rem;
}

.scale {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
}

.scale-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: var(--radius);
  aspect-ratio: 1;
  font-family: var(--font-serif-en);
  font-size: 1.05rem;
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.scale-btn:hover { border-color: rgba(0, 0, 0, 0.22); }

.scale-btn.selected {
  background: var(--btn);
  color: var(--btn-text);
  border-color: var(--btn);
}

.scale-hint {
  display: flex;
  justify-content: space-between;
  margin: 0.65rem 0 0;
  font-size: 0.72rem;
  color: var(--muted);
}

.result-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 0 2.5rem;
  gap: 1.25rem;
}

/* 大圆角白底扁平面板——无浮雕阴影叠层 */
.result-card {
  width: 100%;
  max-width: 26rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  padding: 1.85rem 1.55rem 1.4rem;
}

.card-eyebrow {
  margin: 0;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  font-weight: 600;
}

.card-type {
  font-family: var(--font-serif-zh);
  font-size: 1.85rem;
  font-weight: 600;
  margin: 0.65rem 0 0.1rem;
}

.card-type-en {
  font-family: var(--font-serif-en);
  font-style: italic;
  color: var(--muted);
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
}

.card-blurb {
  margin: 0;
  line-height: 1.7;
  font-size: 1rem;
  font-family: var(--font-serif-zh);
  color: #27272a;
}

.card-rule {
  border: none;
  border-top: 1px solid var(--line);
  margin: 1.15rem 0;
}

.card-tips {
  margin: 0;
  padding-left: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  font-size: 0.9rem;
  line-height: 1.55;
  color: #27272a;
}

.card-tips::before {
  content: "你可能会";
  display: block;
  margin: 0 0 0.35rem -1.15rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 600;
}

.card-pair {
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.card-pair-label {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.pair-row select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg);
  font-size: 0.9rem;
  color: var(--text);
}

.card-pair-note {
  margin: 0.75rem 0 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: #3f3f46;
  min-height: 1.2em;
}

.card-share-line {
  margin: 1.2rem 0 0;
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.card-disclaimer {
  margin: 0.45rem 0 0;
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.5;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  justify-content: center;
}

.toast {
  margin: 0;
  font-size: 0.8rem;
  color: var(--accent);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  .progress-fill, .scale-btn, .btn-primary { transition: none; }
}

.pair-advice {
  margin-top: 0.85rem;
  padding: 0.9rem 0.95rem;
  background: #f7f7f8;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.pair-advice-title {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-weight: 600;
}

.pair-advice-list {
  margin: 0.55rem 0 0;
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.88rem;
  line-height: 1.55;
  color: #27272a;
}

.card-pair-note {
  margin: 0;
}

.quiz-guide {
  margin: 0 0 1.25rem;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--muted);
}