:root {
  --bg: #0d1116;
  --surface: #141a21;
  --surface-2: #19212a;
  --line: #2b3540;
  --line-soft: #202932;
  --text: #f0f5f7;
  --muted: #8d9aa6;
  --muted-2: #65727d;
  --cyan: #7be8ed;
  --cyan-strong: #3ed2da;
  --orange: #f5a467;
  --green: #91e0b0;
  --radius: 14px;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --sans: "Avenir Next", "Segoe UI", ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, select { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
::selection { color: var(--bg); background: var(--cyan); }

.topbar {
  height: 72px;
  padding: 0 clamp(20px, 5vw, 80px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-soft);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(13, 17, 22, .96);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 27px; height: 27px; border: 1px solid var(--cyan); color: var(--cyan); border-radius: 50%; font-weight: 600; }
.topbar-meta { color: var(--muted); display: flex; align-items: center; gap: 8px; font-size: 12px; }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(145,224,176,.10); }
.icon-button { border: 0; color: var(--cyan); background: transparent; padding: 4px 2px 4px 8px; font-size: 20px; line-height: 1; transition: transform .2s ease, color .2s ease; }
.icon-button:hover { color: var(--text); transform: rotate(120deg); }

.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.coverage-section { padding: 42px 0 10px; }
.coverage-heading { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 18px; }
.coverage-heading h2 { margin: 0; font-size: clamp(24px, 3vw, 34px); letter-spacing: -.05em; }
.coverage-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.coverage-card { min-height: 142px; padding: 15px 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.coverage-card.is-blocked { border-color: rgba(141,154,166,.42); background: rgba(141,154,166,.05); }
.coverage-card.is-caution { border-color: rgba(245,164,103,.45); }
.coverage-card-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.coverage-card-top strong { font-size: 14px; }
.coverage-card-top span { color: var(--cyan); font: 600 11px var(--mono); }
.coverage-status { margin-top: 12px; color: var(--orange); font: 600 11px var(--mono); letter-spacing: .04em; }
.is-ready .coverage-status { color: var(--green); }
.is-blocked .coverage-status { color: var(--muted); }
.coverage-card p { min-height: 38px; margin: 7px 0 10px; color: var(--muted); font-size: 12px; line-height: 1.45; }
.coverage-links { display: flex; gap: 12px; font-size: 11px; }
.coverage-links a { color: var(--text); text-decoration: none; }
.coverage-links a:hover { color: var(--cyan); }
.ledger-section { padding: 56px 0 0; }
.ledger-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.ledger-card { padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.ledger-top { display: flex; align-items: center; gap: 10px; color: var(--muted-2); font: 10px var(--mono); }
.ledger-top strong { margin-left: auto; color: var(--text); font: 600 12px var(--sans); }
.ledger-card h3 { margin: 13px 0 8px; font: 700 20px var(--mono); letter-spacing: -.04em; }
.ledger-card p { margin: 0 0 10px; color: var(--muted); font-size: 11px; line-height: 1.55; }
.ledger-card blockquote { margin: 0; padding: 10px 12px; border-left: 2px solid var(--cyan); color: var(--text); background: rgba(123,232,237,.05); font-size: 12px; line-height: 1.5; }
.ledger-links { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 12px; font-size: 11px; }
.ledger-links a { color: var(--cyan); text-decoration: none; }
.ledger-links span { color: var(--muted-2); margin-left: auto; }
.comparison-section { padding: 72px 0 0; }
.ladder-section { display: none; }
.comparison-grid { display: grid; gap: 16px; }
.trust-explainer { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: -10px 0 16px; color: var(--muted); font-size: 11px; }
.trust-explainer b { display: inline-grid; place-items: center; width: 18px; height: 18px; margin-right: 5px; border-radius: 50%; color: var(--bg); background: var(--cyan); font: 700 10px var(--mono); }
.compare-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.compare-card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; padding: 20px 22px 14px; border-bottom: 1px solid var(--line-soft); }
.compare-card-head h3 { margin: 0; font-size: 21px; letter-spacing: -.035em; }
.compare-card-head p { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.compare-title { padding: 12px 22px 0; color: var(--muted-2); font-size: 11px; }
.trust-badge { flex: none; padding: 5px 8px; border-radius: 5px; font: 600 10px var(--mono); letter-spacing: .05em; }
.trust-indexed { color: var(--green); background: rgba(145,224,176,.1); border: 1px solid rgba(145,224,176,.3); }
.trust-reported { color: var(--orange); background: rgba(245,164,103,.1); border: 1px solid rgba(245,164,103,.3); }
.trust-historical { color: var(--muted); background: rgba(141,154,166,.1); border: 1px solid rgba(141,154,166,.3); }
.compare-cells { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 18px; background: var(--line-soft); }
.compare-cell { min-height: 160px; padding: 16px; background: var(--surface); }
.compare-cell.is-lowest { background: rgba(123,232,237,.07); box-shadow: inset 0 3px 0 var(--cyan); }
.compare-cell.is-missing { background: rgba(141,154,166,.035); }
.compare-platform { display: flex; justify-content: space-between; align-items: center; color: var(--text); font: 600 12px var(--mono); }
.compare-status { color: var(--muted-2); font-size: 10px; font-weight: 400; }
.compare-price { display: block; margin-top: 18px; color: var(--cyan); font: 700 24px var(--mono); letter-spacing: -.05em; }
.compare-date, .compare-stock, .compare-note { margin-top: 6px; color: var(--muted-2); font-size: 10px; line-height: 1.45; }
.compare-stock { min-height: 29px; color: var(--muted); }
.compare-msrp { margin-top: 6px; color: var(--muted-2); font: 11px var(--mono); }
.compare-premium { margin-top: 4px; color: var(--orange); font: 600 11px var(--mono); }
.is-lowest .compare-premium { color: var(--green); }
.compare-links { display: flex; gap: 10px; margin-top: 12px; font-size: 11px; }
.compare-links a { color: var(--text); text-decoration: none; }
.compare-links a:hover { color: var(--cyan); }
.compare-missing { margin-top: 22px; color: var(--muted); font-size: 13px; }
.excluded-note { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 14px; padding: 12px 14px; border: 1px dashed rgba(245,164,103,.38); border-radius: 8px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.excluded-note strong { color: var(--orange); font-weight: 600; }
.compact-coverage { padding-top: 46px; }
.compact-coverage .coverage-grid { grid-template-columns: repeat(4, minmax(0,1fr)); }
.chart-section { padding: 78px 0 0; }
.price-chart { min-height: 330px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.price-chart svg { display: block; width: 100%; height: auto; }
.chart-grid-line { stroke: var(--line-soft); stroke-width: 1; }
.chart-axis-line { stroke: var(--line); stroke-width: 1; }
.chart-axis-label { fill: var(--muted-2); font: 11px var(--mono); }
.chart-dot { cursor: pointer; stroke: var(--surface); stroke-width: 2; }
.chart-empty { display: grid; place-items: center; min-height: 330px; padding: 24px; color: var(--muted); text-align: center; font-size: 13px; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 9px 18px; padding: 14px 4px 0; color: var(--muted); font-size: 11px; }
.legend-item { display: inline-flex; align-items: center; gap: 7px; }
.legend-item i { width: 8px; height: 8px; border-radius: 50%; }
.blocked-section { padding: 62px 0 0; }
.blocked-list { border-top: 1px solid var(--line); }
.blocked-row { display: grid; grid-template-columns: minmax(0, 1fr) 170px 150px; gap: 18px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.blocked-row strong { font-size: 13px; }
.blocked-row p { margin: 5px 0 0; color: var(--muted); font-size: 11px; }
.blocked-row > span { color: var(--muted-2); font: 11px var(--mono); }
.chart-section { padding: 72px 0 0; }
.price-chart { min-height: 320px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.price-chart svg { display: block; width: 100%; height: 320px; }
.chart-grid-line { stroke: var(--line-soft); stroke-width: 1; }
.chart-axis-label { fill: var(--muted-2); font: 10px var(--mono); }
.chart-series { fill: none; stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.chart-dot { stroke: var(--surface); stroke-width: 2; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 9px 18px; padding: 14px 4px 0; color: var(--muted); font-size: 11px; }
.chart-legend-item { display: inline-flex; align-items: center; gap: 7px; }
.chart-legend-item i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.chart-empty { min-height: 320px; display: grid; place-items: center; padding: 24px; color: var(--muted); font-size: 13px; text-align: center; }
.hero { min-height: 465px; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(330px, .7fr); gap: clamp(32px, 7vw, 110px); align-items: center; padding: 72px 0 56px; }
.eyebrow, .section-kicker { margin: 0 0 18px; color: var(--cyan); font: 600 11px/1.2 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 720px; margin-bottom: 22px; font-size: clamp(44px, 7vw, 84px); line-height: .98; letter-spacing: -.07em; font-weight: 720; }
h1 span { color: var(--cyan); display: block; }
.hero-lede { max-width: 630px; color: var(--muted); font-size: 16px; line-height: 1.75; }
.hero-actions { display: flex; gap: 14px; align-items: center; margin-top: 32px; }
.primary-action, .secondary-action { display: inline-flex; align-items: center; gap: 11px; min-height: 42px; padding: 0 17px; border-radius: 7px; text-decoration: none; font-size: 13px; font-weight: 700; }
.primary-action { color: var(--bg); background: var(--cyan); }
.primary-action:hover { background: var(--text); }
.secondary-action { color: var(--muted); border: 1px solid var(--line); }
.secondary-action:hover { border-color: var(--cyan); color: var(--text); }

.hero-snapshot { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 14px 44px rgba(0,0,0,.18); }
.snapshot-heading { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--line-soft); color: var(--muted); font-size: 12px; }
.mono, code { font-family: var(--mono); }
.snapshot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 18px; padding: 22px 0; }
.snapshot-stat { display: grid; gap: 5px; }
.snapshot-stat.wide { grid-column: span 2; }
.stat-label, .insight-key { color: var(--muted-2); font: 600 10px/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.snapshot-stat strong { font: 600 27px/1.1 var(--mono); letter-spacing: -.05em; }
.stat-note { color: var(--muted); font-size: 12px; }
.snapshot-footnote { display: flex; align-items: center; gap: 8px; color: var(--muted-2); padding-top: 15px; border-top: 1px solid var(--line-soft); font-size: 11px; }
.signal-line { width: 22px; height: 1px; background: var(--cyan); }

.controls { display: flex; align-items: end; flex-wrap: wrap; gap: 26px; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.control-group { display: grid; gap: 8px; }
.control-group-right { margin-left: auto; }
.control-label { color: var(--muted-2); font: 600 10px/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.segmented { display: inline-flex; gap: 4px; padding: 3px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.segment, .sort-button { border: 0; border-radius: 5px; color: var(--muted); background: transparent; padding: 8px 12px; font-size: 12px; }
.segment:hover, .segment.is-active { background: var(--surface-2); color: var(--text); }
.segment.is-active { box-shadow: inset 0 0 0 1px var(--cyan-strong); }
.select-control, .sort-button { min-height: 34px; color: var(--text); border: 1px solid var(--line); border-radius: 7px; background: var(--surface); padding: 0 11px; font-size: 12px; }
.select-control { min-width: 124px; }
.select-control option { background: var(--surface); }
.sort-button { display: inline-flex; align-items: center; gap: 10px; }
.sort-button:hover { border-color: var(--cyan); }
.sort-icon { color: var(--cyan); font-size: 16px; }

.ladder-section, .method-section { padding: 78px 0 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.section-kicker { margin-bottom: 9px; color: var(--muted-2); }
h2 { margin-bottom: 0; font-size: clamp(29px, 4vw, 48px); line-height: 1; letter-spacing: -.055em; }
.section-summary { max-width: 330px; color: var(--muted); font-size: 12px; text-align: right; }
.ladder-shell { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.ladder-axis { display: flex; justify-content: space-between; padding: 13px 20px; border-bottom: 1px solid var(--line-soft); color: var(--muted-2); font: 10px var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.ladder-list { padding: 12px 0; }
.ladder-row { position: relative; display: grid; grid-template-columns: 42px minmax(210px, 1.5fr) minmax(140px, 1fr) 128px 185px 78px 150px; align-items: center; min-height: 88px; padding: 13px 20px; gap: 14px; border-bottom: 1px solid var(--line-soft); }
.ladder-row:last-child { border-bottom: 0; }
.ladder-row:hover { background: var(--surface-2); }
.rank { color: var(--muted-2); font: 16px var(--mono); }
.product-main { min-width: 0; display: grid; gap: 4px; }
.product-title { overflow: hidden; color: var(--text); font-size: 14px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.product-sub { overflow: hidden; color: var(--muted); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.price-track { position: relative; height: 8px; border-radius: 99px; background: #273039; }
.price-track span { position: absolute; top: 0; left: 0; height: 100%; border-radius: inherit; background: var(--cyan); }
.platform-tag { justify-self: start; color: var(--cyan); border: 1px solid rgba(123,232,237,.28); padding: 4px 7px; border-radius: 5px; font: 10px var(--mono); }
.condition-tag { display: inline-flex; justify-content: center; justify-self: start; max-width: 110px; color: var(--orange); font-size: 10px; line-height: 1.2; text-align: center; }
.price-cell { display: grid; justify-items: end; gap: 3px; }
.price { color: var(--text); font: 700 18px var(--mono); letter-spacing: -.04em; }
.price-note { color: var(--muted-2); font-size: 10px; }
.source-links { display: flex; justify-self: end; gap: 9px; align-items: center; white-space: nowrap; }
.source-link { color: var(--muted); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 4px; font-size: 11px; }
.source-link:hover { color: var(--cyan); text-decoration-color: var(--cyan); }
.evidence-link { color: var(--muted-2); }
.ladder-row.is-top .rank { color: var(--cyan); }
.ladder-row.is-top .price { color: var(--cyan); }
.empty-state { padding: 64px 20px; text-align: center; }
.empty-glyph { color: var(--cyan); font: 30px var(--mono); }
.empty-state h3 { margin: 10px 0 5px; font-size: 18px; }
.empty-state p { color: var(--muted); font-size: 13px; }

.insight-strip { display: grid; grid-template-columns: 1fr 1px 1fr 1px 1.6fr; align-items: stretch; gap: 22px; margin-top: 32px; padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.insight-item { display: grid; gap: 8px; align-content: center; }
.insight-item strong { font-size: 15px; line-height: 1.3; }
.insight-note { color: var(--muted-2); font-size: 11px; }
.insight-divider { background: var(--line); }

.method-section { padding-bottom: 88px; }
.method-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.method-note { min-height: 205px; padding: 22px 24px 12px 0; border-right: 1px solid var(--line); }
.method-note + .method-note { padding-left: 24px; }
.method-note:last-child { border-right: 0; }
.method-index { color: var(--cyan); font: 12px var(--mono); }
.method-note h3 { margin: 42px 0 10px; font-size: 17px; }
.method-note p { max-width: 270px; color: var(--muted); font-size: 12px; line-height: 1.7; }

.footer { display: flex; justify-content: space-between; gap: 20px; padding: 20px clamp(20px, 5vw, 80px); border-top: 1px solid var(--line-soft); color: var(--muted-2); font-size: 11px; }
.footer code { color: var(--muted); }
.noscript-warning { margin: 24px auto; max-width: 1180px; padding: 14px 18px; border: 1px solid rgba(245,164,103,.5); border-radius: 10px; color: var(--orange); background: rgba(245,164,103,.08); font-size: 13px; }

@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; padding-top: 55px; }
  .hero-snapshot { max-width: 520px; }
  .coverage-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .compare-cells { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .compact-coverage .coverage-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .blocked-row { grid-template-columns: minmax(0, 1fr) 120px; }
  .blocked-row .source-links { grid-column: 1 / -1; justify-self: start; }
  .ledger-grid { grid-template-columns: 1fr; }
  .ladder-row { grid-template-columns: 34px minmax(160px, 1fr) 90px; }
  .price-track { display: none; }
  .condition-tag { grid-column: 2; grid-row: 3; justify-self: start; }
  .source-links { grid-column: 3; grid-row: 2; }
  .platform-tag { grid-column: 3; grid-row: 1; justify-self: end; }
  .price-cell { grid-column: 2; grid-row: 2; justify-items: start; }
  .insight-strip { grid-template-columns: 1fr 1px 1fr; }
  .insight-item-wide { grid-column: 1 / -1; padding-top: 10px; border-top: 1px solid var(--line); }
}

@media (max-width: 560px) {
  .topbar { height: 62px; }
  .topbar-meta { font-size: 10px; }
  .shell { width: min(100% - 28px, 1180px); }
  .hero { min-height: 0; padding: 44px 0 38px; }
  h1 { font-size: clamp(40px, 15vw, 63px); }
  .hero-lede { font-size: 14px; }
  .controls { gap: 16px; }
  .control-group-right { margin-left: 0; }
  .section-heading { display: block; }
  .section-summary { margin-top: 14px; text-align: left; }
  .coverage-heading { display: block; }
  .coverage-heading .section-summary { margin-top: 8px; }
  .coverage-grid { grid-template-columns: 1fr; }
  .compare-card-head { display: block; }
  .compare-card-head .trust-badge { display: inline-block; margin-top: 12px; }
  .compare-cells { grid-template-columns: 1fr; }
  .compact-coverage .coverage-grid { grid-template-columns: 1fr; }
  .blocked-row { display: block; }
  .blocked-row > span { display: block; margin-top: 8px; }
  .blocked-row .source-links { margin-top: 9px; }
  .ladder-axis { padding: 12px 14px; }
  .ladder-row { grid-template-columns: 27px minmax(0, 1fr) 80px; padding: 13px 14px; gap: 10px; }
  .product-title { font-size: 12px; }
  .platform-tag { font-size: 9px; }
  .source-link { font-size: 10px; }
  .method-grid { grid-template-columns: 1fr; }
  .method-note, .method-note + .method-note { min-height: 0; padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .method-note h3 { margin-top: 20px; }
  .footer { display: block; line-height: 2; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}