* { box-sizing: border-box; }
body { margin: 0; font-family: "PingFang SC", "Microsoft YaHei", sans-serif; background: #0b1026; color: #e2e8f0; }
a { color: #7dd3fc; text-decoration: none; }
.topnav { display: flex; align-items: center; justify-content: space-between; padding: 14px 28px; background: #111736; border-bottom: 1px solid #1e293b; }
.brand { font-size: 18px; font-weight: 700; color: #f8fafc; }
.topnav nav a { margin-left: 20px; color: #cbd5e1; }
.topnav nav a:hover { color: #fff; }
.footer { padding: 28px; text-align: center; color: #64748b; border-top: 1px solid #1e293b; margin-top: 40px; font-size: 13px; }
.beian { color: #475569; }

.entry-cards { display: flex; gap: 16px; padding: 24px 28px 8px; flex-wrap: wrap; }
.card { flex: 1; min-width: 220px; background: #111736; border: 1px solid #1e293b; border-radius: 12px; padding: 18px 20px; color: #e2e8f0; transition: border-color .2s; }
.card:hover { border-color: #38bdf8; }
.card h3 { margin: 0 0 8px; }
.card p { margin: 0; color: #94a3b8; font-size: 14px; }

.breadcrumb { padding: 8px 28px; color: #94a3b8; font-size: 14px; }
.star-wrap { display: flex; height: calc(100vh - 260px); min-height: 480px; }
#chart { flex: 1; }
.drawer { width: 400px; max-width: 90vw; overflow-y: auto; background: #0f1530; border-left: 1px solid #1e293b; padding: 20px 24px; position: relative; }
.drawer.hidden { display: none; }
.drawer-close { position: absolute; right: 12px; top: 10px; background: none; border: none; color: #94a3b8; font-size: 22px; cursor: pointer; }
.drawer h2 { margin: 0 0 4px; }
.drawer h4 { margin: 16px 0 6px; color: #7dd3fc; }
.muted { color: #94a3b8; }
details.level { background: #111736; border-radius: 8px; padding: 8px 12px; margin: 6px 0; }
details.level summary { cursor: pointer; color: #fbbf24; }
.progress-btns { display: flex; gap: 8px; margin: 12px 0; }
.pbtn, .btn { background: #1e293b; color: #cbd5e1; border: 1px solid #334155; border-radius: 8px; padding: 6px 14px; cursor: pointer; font-size: 13px; }
.pbtn.active { background: #0369a1; color: #fff; border-color: #38bdf8; }
.btn { display: inline-block; margin-top: 12px; background: #0369a1; color: #fff; }

.page { max-width: 860px; margin: 0 auto; padding: 24px; }
.year-filter { margin: 16px 0; display: flex; gap: 8px; flex-wrap: wrap; }
.yr { background: #1e293b; color: #cbd5e1; border: 1px solid #334155; border-radius: 999px; padding: 4px 14px; cursor: pointer; }
.yr.active { background: #0369a1; color: #fff; }
.timeline { list-style: none; padding: 0; }
.tl-item { display: flex; gap: 16px; margin-bottom: 18px; }
.tl-year { flex: 0 0 56px; font-weight: 700; color: #fbbf24; }
.tl-card { background: #111736; border: 1px solid #1e293b; border-radius: 10px; padding: 12px 16px; flex: 1; }
.tl-card h3 { margin: 0 0 6px; }
.tl-card p { margin: 0 0 6px; color: #cbd5e1; }

.demo { background: #111736; border: 1px solid #1e293b; border-radius: 12px; padding: 20px 24px; margin-top: 20px; }
.node-tag { font-size: 12px; color: #64748b; font-weight: 400; }
.gd-controls { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; margin: 14px 0; }
.gd-controls label { display: flex; flex-direction: column; font-size: 13px; color: #cbd5e1; gap: 4px; }
#gd-restart { background: #0369a1; color: #fff; border: none; border-radius: 8px; padding: 8px 18px; cursor: pointer; }
.gd-canvases { display: flex; gap: 20px; flex-wrap: wrap; }
.gd-canvases canvas { background: #0f1530; border: 1px solid #1e293b; border-radius: 10px; }
.tts-btn { margin-left: 10px; background: #1e293b; color: #cbd5e1; border: 1px solid #334155; border-radius: 6px; padding: 2px 10px; font-size: 12px; cursor: pointer; }
.tts-btn:hover { border-color: #38bdf8; color: #fff; }
.tts-btn:disabled { opacity: 0.6; cursor: wait; }