@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap');

:root {
  --ink: #0B1615;
  --ink-2: #11201F;
  --ink-3: #16302D;
  --line: rgba(148, 196, 178, 0.14);
  --line-strong: rgba(148, 196, 178, 0.28);
  --paper: #ECE7D6;
  --green: #5AA37B;
  --green-dim: #3f7359;
  --gold: #C9A24B;
  --red: #C1614A;
  --text: #EAF1EC;
  --text-dim: #82A398;
  --text-dimmer: #567b70;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --radius: 4px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  background-image:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(90,163,123,0.09), transparent 60%),
    repeating-linear-gradient(180deg, rgba(148,196,178,0.02) 0px, rgba(148,196,178,0.02) 1px, transparent 1px, transparent 3px);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* ---------- 状态条 ---------- */
#data-status {
  display: none;
  background: var(--ink-3);
  border-bottom: 1px solid var(--line);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 8px 24px;
  text-align: center;
}
#data-status.status-error { background: rgba(193,97,74,0.18); color: #e8bfb4; }

/* ---------- 顶部 ---------- */
header.masthead {
  position: sticky; top: 0; z-index: 20;
  background: rgba(11,22,21,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 14px 24px;
}
.masthead-row { display: flex; align-items: baseline; justify-content: space-between; max-width: 1180px; margin: 0 auto; gap: 16px; flex-wrap: wrap; }
.brand { font-family: var(--serif); font-size: 20px; font-weight: 600; letter-spacing: 0.01em; }
.brand small { display: block; font-family: var(--mono); font-size: 10.5px; color: var(--text-dim); font-weight: 400; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 2px; }
nav.toc { display: flex; gap: 18px; flex-wrap: wrap; font-family: var(--mono); font-size: 12px; }
nav.toc a { color: var(--text-dim); text-decoration: none; padding: 4px 0; border-bottom: 1px solid transparent; }
nav.toc a:hover { color: var(--gold); border-color: var(--gold); }

/* ---------- Hero ---------- */
.hero {
  max-width: 1180px; margin: 0 auto; padding: 48px 24px 32px;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: end;
}
.hero-left .eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); }
.hero-left h1 { font-family: var(--serif); font-size: clamp(40px, 6vw, 68px); font-weight: 600; margin: 8px 0 4px; line-height: 1; letter-spacing: -0.01em; }
.hero-left .price-row { display: flex; align-items: baseline; gap: 14px; margin-top: 6px; }
.hero-left .chg { font-family: var(--mono); font-size: 20px; font-weight: 500; }
.chg.up { color: var(--green); } .chg.down { color: var(--red); }
.badge { display: inline-block; margin-top: 14px; font-family: var(--mono); font-size: 12.5px; padding: 6px 12px; border: 1px solid var(--line-strong); border-radius: 999px; color: var(--paper); }
.hero-desc { margin-top: 18px; max-width: 44ch; color: var(--text-dim); font-size: 14.5px; }
.hero-meta { margin-top: 14px; font-family: var(--mono); font-size: 12px; color: var(--text-dimmer); }
.hero-meta a { color: var(--text-dim); }

.range-toggle { display: inline-flex; gap: 2px; background: var(--ink-3); border: 1px solid var(--line); border-radius: 999px; padding: 3px; margin-bottom: 10px; }
.range-btn { font-family: var(--mono); font-size: 12px; background: none; border: none; color: var(--text-dim); padding: 6px 14px; border-radius: 999px; cursor: pointer; }
.range-btn.active { background: var(--green-dim); color: var(--paper); }
.hero-date { font-family: var(--mono); font-size: 11.5px; color: var(--text-dimmer); }

/* ---------- Stat cards ---------- */
.stat-grid { max-width: 1180px; margin: 0 auto; padding: 0 24px 40px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat-card { background: var(--ink-2); padding: 20px; }
.stat-label { font-family: var(--mono); font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.stat-value { font-family: var(--serif); font-size: 26px; margin-top: 6px; font-weight: 500; }
.stat-sub { font-family: var(--mono); font-size: 11.5px; color: var(--text-dimmer); margin-top: 4px; }

/* ---------- Sections ---------- */
section.block { max-width: 1180px; margin: 0 auto; padding: 64px 24px; border-top: 1px solid var(--line); }
.block-head { display: flex; gap: 18px; align-items: baseline; margin-bottom: 8px; }
.block-num { font-family: var(--mono); font-size: 13px; color: var(--gold); }
.block-title { font-family: var(--serif); font-size: 30px; font-weight: 600; }
.block-intro { color: var(--text-dim); font-size: 14.5px; max-width: 68ch; margin: 10px 0 32px; }

.metric-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; }
.metric-row.cols-4 { grid-template-columns: repeat(4, 1fr); }
.metric { background: var(--ink-2); padding: 18px 20px; }
.metric-label { font-family: var(--mono); font-size: 10.5px; color: var(--text-dim); text-transform: uppercase; }
.metric-value { font-family: var(--serif); font-size: 24px; margin-top: 6px; }
.metric-sub { font-family: var(--mono); font-size: 11px; color: var(--text-dimmer); margin-top: 4px; }

.chart-card { background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 24px; }
.chart-title { font-family: var(--sans); font-weight: 600; font-size: 14px; margin-bottom: 2px; }
.chart-sub { font-family: var(--mono); font-size: 11px; color: var(--text-dimmer); margin-bottom: 14px; }
.chart-wrap { position: relative; height: 280px; }

/* ---------- 信号分板块专属 ---------- */
.signal-panel { display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: center; background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; margin-bottom: 24px; }
.gauge-wrap { position: relative; width: 200px; height: 200px; }
.gauge-wrap svg { width: 100%; height: 100%; }
.gauge-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.gauge-score { font-family: var(--serif); font-size: 46px; font-weight: 600; }
.gauge-max { font-family: var(--mono); font-size: 11px; color: var(--text-dimmer); }
.zone-tag { display: inline-block; margin-top: 8px; font-family: var(--mono); font-size: 12.5px; padding: 4px 10px; border-radius: 999px; }
.zone-tag.z1 { background: rgba(130,163,150,0.15); color: var(--text-dim); }
.zone-tag.z2 { background: rgba(90,163,123,0.18); color: var(--green); }
.zone-tag.z3 { background: rgba(127,199,159,0.2); color: #7fc79f; }
.zone-tag.z4 { background: rgba(201,162,75,0.2); color: var(--gold); }
.zone-tag.z5 { background: rgba(193,97,74,0.22); color: var(--red); }

.layer-list { display: flex; flex-direction: column; gap: 14px; }
.layer-item { display: grid; grid-template-columns: 120px 1fr auto; gap: 12px; align-items: center; }
.layer-name { font-family: var(--mono); font-size: 12px; color: var(--text-dim); }
.layer-bar-bg { height: 8px; background: rgba(148,196,178,0.1); border-radius: 4px; overflow: hidden; }
.layer-bar-fill { height: 100%; background: var(--green); border-radius: 4px; }
.layer-score { font-family: var(--mono); font-size: 13px; text-align: right; min-width: 90px; }
.layer-detail { grid-column: 1 / -1; font-family: var(--mono); font-size: 11px; color: var(--text-dimmer); }

.zone-scale { display: flex; font-family: var(--mono); font-size: 10.5px; margin-top: 20px; border-radius: 4px; overflow: hidden; }
.zone-scale span { flex: 1; text-align: center; padding: 6px 4px; color: var(--ink); }
.zone-scale .z1 { background: rgba(130,163,150,0.4); color: var(--text); }
.zone-scale .z2 { background: var(--green-dim); color: var(--paper); }
.zone-scale .z3 { background: var(--green); }
.zone-scale .z4 { background: var(--gold); }
.zone-scale .z5 { background: var(--red); color: var(--paper); }

.callout { background: rgba(201,162,75,0.08); border: 1px solid rgba(201,162,75,0.3); border-radius: var(--radius); padding: 16px 20px; font-size: 13.5px; color: var(--paper); margin-bottom: 24px; }
.callout b { color: var(--gold); }

/* ---------- Tables ---------- */
table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data-table th, table.data-table td { padding: 10px 12px; text-align: right; border-bottom: 1px solid var(--line); font-family: var(--mono); }
table.data-table th:first-child, table.data-table td:first-child { text-align: left; color: var(--text-dim); }
table.data-table thead th { color: var(--text-dim); font-weight: 500; font-size: 11px; text-transform: uppercase; }
table.data-table td.up { color: var(--green); } table.data-table td.down { color: var(--red); }
.table-note { font-family: var(--mono); font-size: 11px; color: var(--text-dimmer); margin-top: 10px; }

/* ---------- 使用手册 ---------- */
.manual-steps { display: flex; flex-direction: column; gap: 22px; margin-bottom: 32px; }
.manual-step { display: grid; grid-template-columns: 36px 1fr; gap: 16px; }
.manual-step-num { font-family: var(--serif); font-size: 22px; color: var(--gold); }
.manual-step p { margin: 0; font-size: 14px; color: var(--paper); }
.faq-item { border-top: 1px solid var(--line); padding: 16px 0; }
.faq-q { font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.faq-a { color: var(--text-dim); font-size: 13.5px; }
.glossary dt { font-family: var(--mono); font-weight: 600; color: var(--gold); font-size: 13px; margin-top: 12px; }
.glossary dd { margin: 4px 0 0; font-size: 13.5px; color: var(--text-dim); }

footer { text-align: center; padding: 40px 24px 60px; font-family: var(--mono); font-size: 11.5px; color: var(--text-dimmer); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .metric-row, .metric-row.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .signal-panel { grid-template-columns: 1fr; text-align: center; }
  .gauge-wrap { margin: 0 auto; }
  .layer-item { grid-template-columns: 1fr; }
}