:root {
  color-scheme: dark;
  --bg: oklch(11.5% 0.022 46);
  --bg-2: oklch(15.5% 0.026 48);
  --panel: oklch(18.5% 0.026 48);
  --panel-2: oklch(23% 0.028 52);
  --panel-3: oklch(15% 0.024 48);
  --ink: oklch(91% 0.018 76);
  --soft: oklch(78% 0.02 76);
  --muted: oklch(66% 0.02 76);
  --dim: oklch(50% 0.018 76);
  --line: oklch(100% 0 0 / .13);
  --line-strong: oklch(78% 0.04 66 / .34);
  --copper: oklch(63% 0.11 58);
  --copper-dark: oklch(40% 0.06 58);
  --green: oklch(61% 0.09 145);
  --blue: oklch(56% 0.09 238);
  --amber: oklch(72% 0.11 78);
  --red: oklch(61% 0.11 34);
  --shadow: 0 24px 80px oklch(0% 0 0 / .36);
  --radius: 2px;
  --page: min(1240px, calc(100vw - 40px));
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html {
  background: var(--bg);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 12%, oklch(30% 0.05 58 / .42), transparent 32%),
    linear-gradient(90deg, oklch(100% 0 0 / .035) 1px, transparent 1px),
    linear-gradient(180deg, oklch(100% 0 0 / .028) 1px, transparent 1px),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  background-size: auto, 88px 88px, 88px 88px, auto;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  letter-spacing: 0;
}

a { color: inherit; }
button, input, select { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 14px max(20px, calc((100vw - 1240px) / 2));
  background: oklch(12% 0.022 46 / .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
}

.brand-mark {
  width: 22px;
  height: 15px;
  border: 2px solid var(--ink);
  box-shadow: inset 0 -4px 0 var(--panel-2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 5px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav a {
  flex: 0 0 auto;
  padding: 8px 11px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 760;
  text-decoration: none;
}

.nav a:first-child {
  border-color: var(--line);
  color: var(--copper);
}

.nav a:hover,
.nav a:focus-visible {
  border-color: var(--line-strong);
  color: var(--ink);
  outline: none;
}

.nav a[aria-current="page"] {
  background: var(--copper);
  border-color: var(--copper);
  color: oklch(10% 0.018 46);
}

main {
  width: var(--page);
  margin: 0 auto;
}

.hero,
.page-title {
  padding: 68px 0 36px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr);
  gap: 40px;
  align-items: end;
}

.hero-copy { max-width: 820px; }

.eyebrow,
.section-kicker {
  width: fit-content;
  margin: 0 0 18px;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  color: var(--copper);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .045em;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 930px;
  margin-bottom: 22px;
  color: var(--ink);
  font-family: "Arial Black", "Arial", system-ui, sans-serif;
  font-size: clamp(52px, 8.7vw, 120px);
  font-weight: 900;
  line-height: .82;
  letter-spacing: -.018em;
}

h2 {
  margin-bottom: 12px;
  color: var(--ink);
  font-family: "Arial Black", "Arial", system-ui, sans-serif;
  font-size: clamp(26px, 3vw, 42px);
  line-height: .98;
  letter-spacing: -.01em;
}

h3 {
  margin-bottom: 9px;
  color: var(--ink);
  font-size: 21px;
  line-height: 1.2;
}

.lead {
  max-width: 72ch;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.65;
}

.lead.narrow { max-width: 66ch; }

.action-row,
.card-topline,
.price-row,
.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.action-row {
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  background: var(--copper);
  border-color: var(--copper);
  color: oklch(10% 0.018 46);
}

.button.secondary {
  background: transparent;
}

.decision-panel,
.tool-panel,
.result-panel,
.weights-panel,
.check-card,
.monitor-card,
.filters,
.table-wrap,
.source-list a,
.empty-state {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.decision-panel { overflow: hidden; }

.panel-row {
  padding: 18px;
  border-bottom: 1px solid var(--line);
}

.panel-row:last-child { border-bottom: 0; }

.panel-row strong {
  display: block;
  margin-top: 2px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.18;
}

.panel-row.warning strong { color: var(--red); }

.metric-label,
.muted {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.section { padding: 34px 0; }

.split-band,
.verdict-strip {
  display: grid;
  grid-template-columns: minmax(260px, .72fr) minmax(0, 1fr);
  gap: 34px;
  align-items: start;
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.section-header {
  justify-content: space-between;
  margin-bottom: 18px;
}

.text-link {
  color: var(--copper);
  font-weight: 850;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.top-grid,
.candidate-grid,
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.candidate-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-bottom: 60px;
}

.monitor-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  min-height: 100%;
  overflow: hidden;
  transition: transform 180ms cubic-bezier(.22, 1, .36, 1), border-color 180ms cubic-bezier(.22, 1, .36, 1), box-shadow 180ms cubic-bezier(.22, 1, .36, 1);
}

.monitor-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: 0 34px 110px oklch(0% 0 0 / .44);
}

.compact-card { grid-template-columns: 1fr; }

.monitor-visual {
  display: grid;
  place-items: center;
  min-height: 190px;
  padding: 22px;
  background:
    linear-gradient(90deg, oklch(95% 0.012 76 / .08) 1px, transparent 1px),
    linear-gradient(180deg, oklch(95% 0.012 76 / .07) 1px, transparent 1px),
    linear-gradient(140deg, oklch(11% 0.018 46), oklch(24% 0.03 50));
  background-size: 18px 18px, 18px 18px, auto;
}

.screen-plate {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 16 / 10;
  max-width: 190px;
  border: 10px solid oklch(6% 0.012 46);
  background:
    linear-gradient(90deg, oklch(95% 0.012 76 / .12) 1px, transparent 1px),
    linear-gradient(0deg, oklch(95% 0.012 76 / .12) 1px, transparent 1px),
    oklch(30% 0.036 62);
  background-size: 13px 13px;
  color: var(--ink);
  font-weight: 850;
  box-shadow: 0 22px 34px oklch(0% 0 0 / .48);
}

.screen-plate::after {
  content: "";
  position: absolute;
  bottom: -32px;
  left: 50%;
  width: 60px;
  height: 22px;
  border-bottom: 9px solid oklch(6% 0.012 46);
  transform: translateX(-50%);
}

.card-main { padding: 20px; }
.card-main p { color: var(--muted); }

.badge {
  display: inline-flex;
  align-items: center;
  width: max-content;
  min-height: 24px;
  padding: 3px 8px;
  background: var(--panel-2);
  color: var(--ink);
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.badge.recommended { background: oklch(25% 0.06 145); color: var(--green); }
.badge.reasonable { background: oklch(25% 0.055 238); color: var(--blue); }
.badge.test { background: oklch(27% 0.055 78); color: var(--amber); }
.badge.reject { background: oklch(27% 0.055 34); color: var(--red); }
.badge.alternative { background: var(--copper-dark); color: var(--ink); }

.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0;
}

.spec-grid div {
  min-width: 0;
  padding: 9px;
  background: var(--panel-2);
}

dt { color: var(--dim); font-size: 12px; }
dd { margin: 0; color: var(--ink); font-weight: 800; }

.price-row {
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.price-row strong { color: var(--ink); }

.pro-con {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 16px 0;
}

.pro-con ul,
.check-list,
.question-list {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.pro-con li,
.check-list li,
.question-list li {
  margin-bottom: 8px;
  color: var(--muted);
}

.pro-con li::before,
.check-list:not(.interactive) li::before,
.question-list li::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--copper);
  vertical-align: 2px;
}

.filters {
  position: sticky;
  top: 66px;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px;
  margin-bottom: 20px;
  background: oklch(12% 0.022 46 / .92);
  backdrop-filter: blur(14px);
}

.filters label {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  font-weight: 760;
}

input[type="checkbox"] { accent-color: var(--copper); }

.tool-layout,
.decision-layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding-bottom: 34px;
}

.tool-panel,
.result-panel,
.weights-panel { padding: 20px; }

.tool-panel {
  display: grid;
  gap: 15px;
}

label {
  color: var(--muted);
  font-size: 14px;
  font-weight: 760;
}

input[type="number"],
select {
  width: 100%;
  min-height: 42px;
  margin-top: 7px;
  padding: 0 10px;
  background: var(--panel-3);
  border: 1px solid var(--line);
  color: var(--ink);
}

.custom-resolution {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.result-grid div {
  padding: 14px;
  background: var(--panel-2);
}

.result-grid span {
  display: block;
  color: var(--dim);
  font-size: 12px;
}

.result-grid strong {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-size: 28px;
}

.result-copy {
  max-width: 68ch;
  margin: 18px 0;
  color: var(--muted);
  font-size: 18px;
}

.scale-meter {
  height: 12px;
  overflow: hidden;
  background: var(--panel-2);
}

.scale-meter span {
  display: block;
  height: 100%;
  background: var(--copper);
  transition: width 180ms ease-out;
}

.pixel-grid-compare {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.pixel-card {
  min-height: 190px;
  padding: 18px;
  border: 1px solid var(--line);
  background-color: var(--panel);
  background-image:
    linear-gradient(90deg, oklch(95% 0.012 76 / .09) 1px, transparent 1px),
    linear-gradient(0deg, oklch(95% 0.012 76 / .09) 1px, transparent 1px);
  box-shadow: var(--shadow);
}

.pixel-card[data-density="fhd"] { background-size: 26px 26px; }
.pixel-card[data-density="qhd"] { background-size: 19px 19px; }
.pixel-card[data-density="uhd"] { background-size: 13px 13px; }
.pixel-card[data-density="fivek"] { background-size: 9px 9px; }

.pixel-card span,
.pixel-card strong {
  display: block;
  width: max-content;
  padding: 2px 7px;
  background: var(--panel-3);
}

.pixel-card strong { margin-top: 5px; color: var(--ink); }

.weight-control {
  display: grid;
  gap: 8px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.weight-control:first-child { padding-top: 0; }
.weight-control:last-child { border-bottom: 0; padding-bottom: 0; }

.weight-control span {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.weight-control em {
  color: var(--copper);
  font-style: normal;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--copper);
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  min-width: 880px;
  border-collapse: collapse;
}

th,
td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  position: sticky;
  top: 0;
  background: var(--panel-3);
  color: var(--dim);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

td {
  color: var(--soft);
  font-size: 14px;
}

td strong { color: var(--ink); }

td span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.checklist-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-bottom: 60px;
}

.check-card { padding: 24px; }
.check-card.wide { grid-column: 1 / -1; }

.interactive label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 560;
}

.interactive input { margin-top: 4px; }

.source-section { padding: 24px 0; }

.source-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.source-list a {
  padding: 14px 16px;
  color: var(--copper);
  font-weight: 800;
  text-decoration: none;
}

.source-list a:hover {
  border-color: var(--line-strong);
  color: var(--ink);
}

.empty-state {
  grid-column: 1 / -1;
  padding: 30px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .hero,
  .split-band,
  .verdict-strip,
  .tool-layout,
  .decision-layout {
    grid-template-columns: 1fr;
  }

  .candidate-grid,
  .top-grid,
  .pixel-grid-compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    max-width: 100%;
  }

  .filters { top: 116px; }
}

@media (max-width: 680px) {
  :root { --page: min(100vw - 28px, 1240px); }

  h1 { font-size: 46px; }
  h2 { font-size: 25px; }

  .hero,
  .page-title { padding-top: 40px; }

  .candidate-grid,
  .top-grid,
  .checklist-grid,
  .pixel-grid-compare,
  .source-list,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .monitor-card { grid-template-columns: 1fr; }
  .pro-con,
  .spec-grid { grid-template-columns: 1fr; }
  .filters { position: static; }
}