:root {
  --lab: #070a14;
  --gel: #0e1425;
  --plate: #121a2f;
  --plate-2: #17203a;
  --line: #233050;
  --text: #eef2fc;
  --muted: #a3afc8;
  --accent: #4ade9b;
  --danger: #ef6478;
  --font: "Outfit", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
}

html, body {
  min-height: 100%;
  margin: 0;
  font-family: var(--font);
  background: var(--lab);
  color: var(--text);
}
body { padding: 0 16px 72px; }

.scene {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 70% 40% at 50% -10%, color-mix(in srgb, var(--accent) 28%, transparent), transparent 60%),
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
}

/* 闯关内容只作用于 #app，不碰到页脚和反馈按钮 */
@scope (#app) {
:scope {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  color: var(--text);
  font-family: var(--font);
}
:scope, :scope * { box-sizing: border-box; }
:scope button, :scope a { font-family: inherit; }
:scope button { cursor: pointer; }
:scope :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 0 8px;
}
.back, .ghost {
  color: var(--text);
  background: var(--plate);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  text-decoration: none;
  font-weight: 700;
}
.brand { display: flex; flex-direction: column; gap: 2px; }
.brand b { font-size: 16px; }
.brand span, .kicker, .note, .ns, .meta, .domain { color: var(--muted); }
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.track { flex: 1; height: 8px; background: var(--plate); border-radius: 999px; overflow: hidden; }
.fill { height: 100%; background: var(--accent); }
.hearts { letter-spacing: 2px; color: #334155; font-size: 18px; }
.hearts .on { color: #fb7185; }
.progress-label { color: var(--muted); font-size: 13px; margin: 8px 0 12px; }

.hero { padding: 18px 0 8px; }
.hero h1, .card h2 { font-size: 32px; letter-spacing: -0.03em; line-height: 1.15; }
.hero p, .body { margin-top: 10px; color: var(--muted); line-height: 1.65; font-size: 16px; }

.group-title { margin: 28px 0 12px; font-size: 14px; letter-spacing: 0.08em; color: var(--muted); font-weight: 700; }
.grid, .path { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.path { margin-top: 18px; }

.game-card, .node, .card {
  background: var(--plate);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.game-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px;
  text-decoration: none; color: inherit;
  border-top: 3px solid var(--accent);
  min-height: 148px;
}
.game-card h2 { font-size: 20px; }
.game-card p { color: var(--muted); line-height: 1.5; font-size: 14px; flex: 1; }
.domain {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--accent);
}
.meta { font-size: 13px; font-weight: 700; }

.node {
  display: flex; flex-direction: column; align-items: flex-start; gap: 6px;
  padding: 14px; text-align: left; color: inherit;
}
.node .bubble {
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--plate-2); border: 2px solid var(--line);
  font-family: var(--mono); font-weight: 800;
}
.node.open .bubble { border-color: var(--accent); color: var(--accent); }
.node.done .bubble { background: var(--accent); color: #04251a; border-color: var(--accent); }
.node.locked { opacity: 0.45; cursor: not-allowed; }
.nt { font-weight: 800; }
.ns { font-size: 12px; line-height: 1.4; }

.card { margin-top: 8px; padding: 22px 18px 18px; }
.tag {
  display: inline-block; margin-bottom: 8px;
  font-family: var(--mono); font-size: 12px; color: var(--accent);
}
.prompt { font-size: 22px; font-weight: 800; line-height: 1.35; letter-spacing: -0.02em; }
.sheet { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.row {
  display: grid; grid-template-columns: 72px 1fr; gap: 10px;
  padding: 10px 12px; background: var(--gel); border-radius: 12px; border: 1px solid var(--line);
}
.row span { color: var(--accent); font-family: var(--mono); font-size: 12px; padding-top: 3px; }
.row b { font-weight: 700; line-height: 1.45; font-size: 14px; }
.note { margin-top: 12px; }
.aid {
  margin: 14px 0 4px; padding: 10px 12px;
  background: color-mix(in srgb, var(--accent) 12%, var(--gel));
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 12px; color: var(--text); line-height: 1.5; font-size: 14px;
}
.opts { display: grid; gap: 10px; margin-top: 16px; }
.opt {
  display: flex; gap: 10px; align-items: flex-start;
  width: 100%; text-align: left;
  background: var(--plate-2); color: var(--text);
  border: 2px solid var(--line); border-radius: 12px;
  padding: 12px 14px; font-size: 16px; font-weight: 700; line-height: 1.4;
}
.opt .k { font-family: var(--mono); color: var(--muted); }
.opt.good { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 16%, var(--plate)); }
.opt.bad { border-color: var(--danger); background: rgba(239, 100, 120, 0.12); }
.opt.off { pointer-events: none; }
.fb { display: none; margin-top: 14px; padding: 14px; border-radius: 12px; }
.fb.show { display: block; }
.fb.good { background: color-mix(in srgb, var(--accent) 14%, transparent); border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent); }
.fb.bad { background: rgba(239, 100, 120, 0.12); border: 1px solid rgba(239, 100, 120, 0.45); }
.fb p { margin-top: 6px; color: var(--muted); line-height: 1.6; }
.go, .ghost {
  margin-top: 14px;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: 800;
}
.go { background: var(--accent); color: #04251a; border: none; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
.actions .go, .actions .ghost { margin-top: 0; }
.result { text-align: left; }
.stars { margin-top: 8px; color: var(--accent); letter-spacing: 3px; font-size: 20px; }

@media (max-width: 640px) {
  .grid, .path { grid-template-columns: 1fr; }
  .hero h1 { font-size: 28px; }
  .prompt { font-size: 20px; }
  .row { grid-template-columns: 1fr; gap: 4px; }
}
}

/* 页脚用普通选择器，不放进 @scope，避免作用域把这块样式丢掉 */
#demo-nav-mount {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 36px auto 0;
  color: var(--muted);
  font-size: 13px;
}
#demo-nav-mount a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}
#demo-nav-mount .demo-site-links,
#demo-nav-mount .demo-breadcrumb,
#demo-nav-mount .demo-path-nav {
  margin: 0 0 10px;
  padding: 14px 16px;
  background: var(--plate);
  border: 1px solid var(--line);
  border-radius: 16px;
  color: var(--muted);
}
#demo-nav-mount .demo-site-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
}
#demo-nav-mount .demo-site-links-brand {
  color: var(--text);
  font-weight: 800;
}
#demo-nav-mount .demo-site-links-sep,
#demo-nav-mount .demo-breadcrumb-sep {
  color: #5c6b8a;
}
#demo-nav-mount .demo-breadcrumb {
  line-height: 1.6;
}
#demo-nav-mount .demo-breadcrumb-sep { margin: 0 8px; }
#demo-nav-mount .demo-breadcrumb-current {
  color: var(--text);
  font-weight: 700;
}
#demo-nav-mount .demo-path-nav-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 12px;
}
#demo-nav-mount .demo-nav-progress {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--gel);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
}
#demo-nav-mount .demo-nav-progress-bar {
  height: 4px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--gel);
  overflow: hidden;
}
#demo-nav-mount .demo-nav-progress-fill {
  height: 100%;
  background: var(--accent);
}
#demo-nav-mount .demo-nav-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
#demo-nav-mount .demo-nav-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gel);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}
#demo-nav-mount .demo-nav-step:hover {
  border-color: var(--accent);
  color: var(--accent);
}
#demo-nav-mount .demo-nav-step--active {
  background: var(--accent);
  border-color: var(--accent);
  color: #04251a;
}
#demo-nav-mount .demo-nav-step--done {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--accent);
}
#demo-nav-mount .demo-path-nav-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
#demo-nav-mount .demo-nav-btn {
  flex: 1 1 180px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--gel);
  border: 1px solid var(--line);
  color: var(--text);
  text-align: center;
  line-height: 1.4;
  text-decoration: none;
}
#demo-nav-mount .demo-nav-next {
  background: color-mix(in srgb, var(--accent) 16%, var(--plate));
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  color: var(--accent);
}
#demo-nav-mount .demo-nav-btn:hover { text-decoration: none; }
#demo-nav-mount .demo-nav-prev:hover { border-color: #5c6b8a; color: var(--text); }
#demo-nav-mount .demo-nav-next:hover { color: var(--text); }
#demo-nav-mount .demo-nav-btn--disabled {
  flex: 1 1 180px;
  padding: 10px 14px;
  border-radius: 12px;
  background: transparent;
  border: 1px solid var(--line);
  color: #5c6b8a;
  text-align: center;
}
@media (max-width: 640px) {
  #demo-nav-mount .demo-nav-progress { margin-left: 0; }
}