/* 星空命盘: deep night-blue / indigo field, gold line-art, light serif headings over sans body. */
:root {
  --night-0: #04061a;
  --night-1: #080d2b;
  --night-2: #101845;
  --indigo: #232d78;
  --indigo-soft: #1a2260;
  --gold: #e0bf6e;
  --gold-bright: #f5dc9b;
  --gold-dim: #9b8548;
  --gold-line: rgba(224, 191, 110, 0.55);
  --gold-hair: rgba(224, 191, 110, 0.22);
  --text: #ebe9f7;
  --muted: #a6abcc;
  --faint: #7078a8;
  --lu: #7fd6a8;
  --quan: #f0a97a;
  --ke: #8fc3ff;
  --ji: #ff8da1;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --gutter: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  background:
    radial-gradient(1200px 700px at 78% -8%, rgba(60, 74, 180, 0.38), transparent 62%),
    radial-gradient(900px 600px at 6% 38%, rgba(35, 45, 120, 0.35), transparent 60%),
    linear-gradient(180deg, var(--night-1) 0%, var(--night-0) 100%);
  background-color: var(--night-0);
  overflow-x: hidden;
}

#sky { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.top, main, .foot { position: relative; z-index: 1; }

a { color: var(--gold); text-decoration-color: var(--gold-hair); text-underline-offset: 4px; }
a:hover { color: var(--gold-bright); }
:focus-visible { outline: 2px solid var(--gold-bright); outline-offset: 3px; border-radius: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

h1, h2, h3 { font-family: var(--serif); font-weight: 300; letter-spacing: 0.04em; margin: 0; color: var(--gold-bright); }
h1 { font-size: clamp(2.3rem, 6vw, 4rem); line-height: 1.2; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.2rem); line-height: 1.35; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.9em; color: var(--gold); }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px max(var(--gutter), calc((100vw - 1180px) / 2));
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--gold-bright); text-decoration: none;
  font-family: var(--serif); font-weight: 300; font-size: 1.2rem; letter-spacing: 0.28em; }
.brand-mark { width: 18px; height: 18px; border: 1px solid var(--gold); transform: rotate(45deg); position: relative; }
.brand-mark::after { content: ""; position: absolute; inset: 4px; border: 1px solid var(--gold-dim); }
.top nav { display: flex; gap: 20px; flex-wrap: wrap; justify-content: flex-end; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 0.9rem; letter-spacing: 0.1em; padding: 6px 0; }
.top nav a:hover { color: var(--gold-bright); }

main { padding: 0 var(--gutter); max-width: 1220px; margin: 0 auto; }

.kicker { color: var(--gold); letter-spacing: 0.38em; font-size: 0.78rem; margin-bottom: 10px; }
.kicker::before { content: ""; display: inline-block; width: 28px; height: 1px; background: var(--gold-line); vertical-align: middle; margin-right: 12px; }

/* hero */
.hero { display: grid; grid-template-columns: 1fr; gap: 28px; padding: 28px 0 72px; }
.hero-copy { max-width: 640px; }
.lede { color: var(--muted); font-size: 1.05rem; margin: 20px 0 8px; }
.note-sample { color: var(--faint); font-size: 0.85rem; letter-spacing: 0.06em; }
.chart-wrap { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: start; }
.chart-figure { margin: 0; }
#chart-svg { width: 100%; height: auto; display: block; max-width: 760px; margin: 0 auto;
  filter: drop-shadow(0 0 40px rgba(60, 74, 180, 0.35)); }

/* chart svg */
.cell-bg { fill: rgba(16, 24, 69, 0.55); stroke: var(--gold-line); stroke-width: 1; transition: fill 0.2s; }
.cell:hover .cell-bg { fill: rgba(35, 45, 120, 0.55); }
.cell.is-selected .cell-bg { fill: rgba(224, 191, 110, 0.12); stroke: var(--gold-bright); stroke-width: 1.6; }
.cell.is-linked .cell-bg { fill: rgba(224, 191, 110, 0.06); }
.cell { cursor: pointer; outline: none; }
.cell:focus-visible .cell-bg { stroke: var(--gold-bright); stroke-width: 2.4; }
.p-name { fill: var(--gold); font-size: 15px; letter-spacing: 0.2em; font-family: var(--serif); }
.p-gz { fill: var(--faint); font-size: 14px; letter-spacing: 0.1em; }
.p-dx { fill: var(--faint); font-size: 12.5px; }
.s-major { fill: var(--gold-bright); font-size: 22px; font-family: var(--serif); letter-spacing: 0.08em; cursor: pointer; }
.s-bright { fill: var(--muted); font-size: 12.5px; }
.s-minor { fill: var(--muted); font-size: 13px; text-anchor: end; cursor: pointer; }
.s-more { fill: var(--faint); font-size: 12px; text-anchor: end; }
.s-sihua-lu { fill: var(--lu); } .s-sihua-quan { fill: var(--quan); }
.s-sihua-ke { fill: var(--ke); } .s-sihua-ji { fill: var(--ji); }
.s-tag { font-size: 12px; }
.shen-badge circle { fill: none; stroke: var(--gold-bright); stroke-width: 1; }
.shen-badge text { fill: var(--gold-bright); font-size: 12px; text-anchor: middle; }
.star-selected { text-decoration: underline; text-decoration-color: var(--gold); text-underline-offset: 6px; }

.center-ring { fill: none; stroke: var(--gold-hair); stroke-width: 1; }
.center-ring-strong { fill: none; stroke: var(--gold-line); stroke-width: 1; }
.center-title { fill: var(--gold-bright); font-family: var(--serif); font-size: 34px; letter-spacing: 0.4em; text-anchor: middle; font-weight: 300; }
.center-sub { fill: var(--muted); font-size: 14px; text-anchor: middle; letter-spacing: 0.12em; }
.center-k { fill: var(--faint); font-size: 13px; text-anchor: end; letter-spacing: 0.1em; }
.center-v { fill: var(--text); font-size: 15px; text-anchor: start; letter-spacing: 0.06em; }
.center-hint { fill: var(--faint); font-size: 12.5px; text-anchor: middle; letter-spacing: 0.1em; }
.relation { stroke: var(--gold); stroke-width: 1.2; fill: none; opacity: 0.5; pointer-events: none; }
.relation-opp { stroke-dasharray: 5 6; }
.relation-dot { fill: var(--gold-bright); pointer-events: none; }

/* detail */
.detail {
  border: 1px solid var(--gold-hair); border-radius: 4px; padding: 22px 20px;
  background: linear-gradient(180deg, rgba(26, 34, 96, 0.55), rgba(8, 13, 43, 0.6));
  backdrop-filter: blur(4px);
}
.detail h3 { margin-bottom: 4px; }
.detail .sub { color: var(--faint); font-size: 0.85rem; letter-spacing: 0.08em; margin-bottom: 14px; }
.detail-empty { color: var(--muted); }
.star-list { list-style: none; margin: 0 0 14px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.star-btn { font: inherit; font-size: 0.92rem; color: var(--text); background: transparent; border: 1px solid var(--gold-hair);
  border-radius: 2px; padding: 4px 10px; min-height: 36px; cursor: pointer; letter-spacing: 0.06em; }
.star-btn:hover { border-color: var(--gold); color: var(--gold-bright); }
.star-btn[aria-pressed="true"] { border-color: var(--gold-bright); background: rgba(224, 191, 110, 0.12); color: var(--gold-bright); }
.star-btn.minor, .star-btn.adjective { color: var(--muted); font-size: 0.85rem; }
.why { border-top: 1px solid var(--gold-hair); padding-top: 14px; font-size: 0.93rem; color: var(--muted); }
.why h4 { margin: 0 0 6px; font-family: var(--serif); font-weight: 300; font-size: 1.05rem; color: var(--gold); letter-spacing: 0.08em; }
.why dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 10px 0 0; }
.why dt { color: var(--faint); }
.why dd { margin: 0; color: var(--text); }
.tag { display: inline-block; font-size: 0.78rem; padding: 0 8px; border: 1px solid currentColor; border-radius: 2px; margin-left: 6px; line-height: 1.6; }
.tag-lu { color: var(--lu); } .tag-quan { color: var(--quan); } .tag-ke { color: var(--ke); } .tag-ji { color: var(--ji); }

/* sections */
.section { padding: 72px 0; border-top: 1px solid var(--gold-hair); }
.section h2 { margin-bottom: 26px; max-width: 760px; }
.wide { max-width: 760px; color: var(--muted); }
.wide strong { color: var(--gold-bright); font-weight: 600; }

.layers { display: grid; grid-template-columns: 1fr; gap: 18px; }
.layer { position: relative; padding: 26px 22px 22px; border: 1px solid var(--gold-hair); background: rgba(16, 24, 69, 0.4); }
.layer::before, .layer::after { content: ""; position: absolute; width: 14px; height: 14px; border: 1px solid var(--gold); }
.layer::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.layer::after { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.layer-no { font-family: var(--serif); font-size: 2.4rem; font-weight: 300; color: var(--gold-dim); line-height: 1; display: block; margin-bottom: 8px; }
.layer p { color: var(--muted); font-size: 0.97rem; }
.layer .layer-foot { color: var(--faint); font-size: 0.86rem; border-top: 1px dashed var(--gold-hair); padding-top: 12px; margin: 14px 0 0; }
.layer-pred { background: rgba(60, 28, 70, 0.28); }

.split { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: start; max-width: 960px; }
.split p { color: var(--muted); }
.refusal { border: 1px solid var(--ji); background: rgba(255, 141, 161, 0.06); padding: 18px 20px; border-radius: 2px; }
.refusal p { margin: 0 0 8px; color: var(--text); }
.refusal .refusal-title { font-family: ui-monospace, Menlo, monospace; color: var(--ji); font-size: 0.82rem; letter-spacing: 0.1em; }
.refusal .refusal-sub { color: var(--muted); font-size: 0.88rem; margin: 0; }

.pair { display: grid; grid-template-columns: 1fr; gap: 14px; margin-top: 24px; max-width: 960px; }
.pair-row { border: 1px solid var(--gold-hair); padding: 16px 18px; background: rgba(16, 24, 69, 0.4); }
.pair-row h3 { font-size: 1.05rem; margin-bottom: 10px; }
.pair-sides { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pair-side .who { color: var(--faint); font-size: 0.8rem; letter-spacing: 0.12em; }
.pair-side .stars { color: var(--gold-bright); font-family: var(--serif); font-size: 1.15rem; letter-spacing: 0.08em; }
.pair-side .meta { color: var(--muted); font-size: 0.82rem; }
.pair-ref { color: var(--faint); font-size: 0.78rem; margin: 10px 0 0; font-family: ui-monospace, Menlo, monospace; word-break: break-all; }
.pair-off { border-style: dashed; }
.pair-off p { margin: 0; color: var(--muted); font-size: 0.93rem; }

.table-wrap { overflow-x: auto; max-width: 960px; border: 1px solid var(--gold-hair); }
.params { width: 100%; border-collapse: collapse; font-size: 0.93rem; min-width: 520px; }
.params th, .params td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--gold-hair); vertical-align: top; }
.params thead th { color: var(--gold); font-weight: 400; letter-spacing: 0.1em; background: rgba(16, 24, 69, 0.6); }
.params tbody th { color: var(--muted); font-weight: 400; white-space: nowrap; }
.params td:last-child { color: var(--muted); }
.params tr:last-child > * { border-bottom: 0; }
.versions { margin-top: 18px; color: var(--faint); font-size: 0.85rem; max-width: 960px; font-family: ui-monospace, Menlo, monospace; line-height: 1.9; }

.foot { padding: 40px var(--gutter) 56px; text-align: center; color: var(--faint); font-size: 0.85rem; border-top: 1px solid var(--gold-hair); max-width: 1220px; margin: 0 auto; }
.noscript { color: var(--ji); }

/* desktop */
@media (min-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .chart-wrap { grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); gap: 32px; }
  .detail { position: sticky; top: 24px; }
  .layers { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1.2fr 1fr; gap: 48px; }
}

/* phones: keep the 12-palace square readable by dropping the small minor stars from the SVG; they remain in the panel */
@media (max-width: 640px) {
  .s-minor, .s-more, .p-dx { display: none; }
  .s-major { font-size: 25px; }
  .s-bright { display: none; }
  .p-name { font-size: 17px; }
  .top nav { gap: 12px; }
  .top nav a { font-size: 0.82rem; letter-spacing: 0.04em; }
  .brand { letter-spacing: 0.16em; }
  .section { padding: 52px 0; }
  .pair-sides { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cell-bg { transition: none; }
}