:root {
  --bg: #0e0a06;
  --surface: #1a140d;
  --surface-2: #221c14;
  --line: #2e2618;
  --line-soft: #1f1810;
  --text: #f0e6d4;
  --muted: #998a73;
  --dim: #5d5340;

  --archive: #d4a558;
  --archive-glow: rgba(212, 165, 88, 0.30);
  --oral: #ff7b6a;
  --dialect: #5fbf99;
  --craft: #a87aff;
  --ritual: #ffd06a;
  --place: #5fdcff;
  --body-c: #ff8fc7;

  --primary: var(--archive);
  --primary-glow: var(--archive-glow);

  --display: 'EB Garamond', 'Noto Serif SC', serif;
  --body: 'Crimson Text', 'Noto Serif SC', serif;
  --mono: 'JetBrains Mono', monospace;
  --cjk-display: 'Noto Serif SC', serif;
  --cjk-body: 'Noto Serif SC', serif;
}

[data-theme="light"] {
  --bg: #f5efe0;
  --surface: #fffaf0;
  --surface-2: #ece2c8;
  --line: #d3c4a0;
  --line-soft: #e3d8b8;
  --text: #1a1408;
  --muted: #5d4f33;
  --dim: #9c8e6e;

  --archive: #8a6420;
  --archive-glow: rgba(138, 100, 32, 0.16);
  --oral: #b22d1c;
  --dialect: #2c8a6a;
  --craft: #6b48d4;
  --ritual: #b8862a;
  --place: #1f8aa8;
  --body-c: #c14872;

  --primary: var(--archive);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--body); -webkit-font-smoothing: antialiased; line-height: 1.65; overflow-x: hidden; }
html[data-lang="en"] [lang="zh"] { display: none; }
html[data-lang="zh"] [lang="en"] { display: none; }
html[data-lang="zh"] body { font-family: var(--cjk-body); }
html[data-lang="zh"] h1, html[data-lang="zh"] h2, html[data-lang="zh"] h3, html[data-lang="zh"] .display { font-family: var(--cjk-display); }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; text-decoration: none; } a:hover { color: var(--archive); }

.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line-soft); }
.nav-inner { display: flex; align-items: center; gap: 28px; padding: 14px 24px; max-width: 1180px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 600; }
.brand-mark { width: 30px; height: 30px; border-radius: 4px; position: relative; background: var(--archive); display: grid; place-items: center; box-shadow: 0 0 14px var(--archive-glow); }
.brand-mark::after { content: '※'; color: var(--bg); font-size: 18px; line-height: 1; }
.brand-name { font-size: 20px; letter-spacing: 0.005em; font-style: italic; }
.nav-links { display: flex; gap: 18px; margin-left: auto; font-size: 14px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.nav-ctrl { display: flex; gap: 6px; }
.btn { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; padding: 7px 12px; background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 6px; cursor: pointer; transition: all 0.15s; }
.btn:hover { color: var(--text); border-color: var(--archive); }

.hero { position: relative; padding: 100px 0 80px; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(50% 35% at 25% 35%, var(--archive-glow), transparent 70%); opacity: 0.55; filter: blur(50px); pointer-events: none; }
[data-theme="light"] .hero::before { opacity: 0.22; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }
.eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; color: var(--muted); text-transform: uppercase; margin-bottom: 22px; }
h1.display { font-family: var(--display); font-weight: 500; font-size: clamp(40px, 6vw, 72px); line-height: 1.04; letter-spacing: -0.012em; margin: 0 0 22px; font-style: italic; }
h1.display em { font-style: normal; color: var(--archive); }
.lede { font-size: 18px; color: var(--muted); max-width: 60ch; margin: 0 0 28px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; color: var(--muted); border: 1px solid var(--line); padding: 5px 10px; border-radius: 100px; }

.atlas-viz { position: relative; aspect-ratio: 1 / 1; max-width: 540px; margin: 0 auto; }
.atlas-viz svg { width: 100%; height: 100%; }

section { padding: 80px 0; border-top: 1px solid var(--line-soft); }
.sec-head { margin-bottom: 44px; }
.sec-tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; color: var(--archive); text-transform: uppercase; margin-bottom: 14px; }
h2 { font-family: var(--display); font-weight: 500; font-size: clamp(30px, 3.6vw, 46px); line-height: 1.1; letter-spacing: -0.012em; margin: 0 0 14px; max-width: 24ch; font-style: italic; }
h2 em { font-style: normal; color: var(--archive); }
.sec-lede { color: var(--muted); max-width: 66ch; font-size: 17px; }

.grid { display: grid; gap: 16px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 880px) { .grid.c2, .grid.c3 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 24px; transition: all 0.2s; }
.card:hover { transform: translateY(-2px); border-color: var(--archive); }
.card[data-f="oral"]    { border-left: 3px solid var(--oral); }
.card[data-f="dialect"] { border-left: 3px solid var(--dialect); }
.card[data-f="craft"]   { border-left: 3px solid var(--craft); }
.card[data-f="ritual"]  { border-left: 3px solid var(--ritual); }
.card[data-f="place"]   { border-left: 3px solid var(--place); }
.card[data-f="body"]    { border-left: 3px solid var(--body-c); }
.card-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.card h3 { font-family: var(--display); font-weight: 500; font-style: italic; font-size: 24px; margin: 0 0 12px; line-height: 1.2; }
.card p { color: var(--muted); font-size: 15px; margin: 0 0 6px; }
.card .row { font-size: 14px; margin-bottom: 6px; }
.card .row .lab { font-family: var(--mono); font-size: 10px; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; display: block; margin-bottom: 2px; }
.card .row .val { color: var(--text); }

.mirror-wrap { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 28px; }
.prompt-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; margin-bottom: 18px; }
.prompt-btn { background: var(--surface-2); border: 1px solid var(--line); color: var(--text); text-align: left; padding: 14px 16px; border-radius: 8px; cursor: pointer; font-family: var(--body); font-size: 14px; transition: all 0.18s; }
.prompt-btn:hover { border-color: var(--archive); transform: translateY(-1px); }
.prompt-btn .pt-tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; color: var(--archive); text-transform: uppercase; display: block; margin-bottom: 6px; }
.prompt-btn strong { font-family: var(--display); font-style: italic; font-size: 17px; }
.mirror-input { display: flex; gap: 10px; margin-bottom: 16px; }
.mirror-input textarea { flex: 1; background: var(--surface-2); border: 1px solid var(--line); border-radius: 8px; padding: 12px; font-family: var(--body); font-size: 15px; color: var(--text); resize: vertical; min-height: 70px; }
.mirror-input textarea:focus { outline: none; border-color: var(--archive); }
.mirror-input button { background: var(--archive); color: #1a0d05; border: 0; border-radius: 8px; padding: 0 26px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; cursor: pointer; font-weight: 700; }
.mirror-out { background: var(--surface-2); border-left: 3px solid var(--archive); border-radius: 6px; padding: 24px 26px; font-size: 16px; line-height: 1.75; white-space: pre-wrap; min-height: 80px; color: var(--text); font-family: var(--body); }
.mirror-out:empty::before { content: 'Pick a probe above or describe a memory question.'; color: var(--dim); font-style: italic; }
html[data-lang="zh"] .mirror-out:empty::before { content: '从上方选择一个探针，或描述一个记忆问题。'; }

.rails { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--oral); border-radius: 8px; padding: 26px 28px; }
.rails h3 { font-family: var(--display); margin: 0 0 14px; font-size: 24px; color: var(--oral); font-weight: 500; font-style: italic; }
.rails ul { margin: 0; padding-left: 20px; color: var(--muted); font-size: 15px; }
.rails li { margin-bottom: 10px; }

footer { border-top: 1px solid var(--line-soft); padding: 40px 24px; color: var(--muted); font-size: 14px; text-align: center; }
footer a { color: var(--muted); border-bottom: 1px dotted var(--line); }
footer a:hover { color: var(--archive); }