:root {
  --bg: #f6f7f9; --surface: #ffffff; --surface-2: #f0f2f5; --border: #dfe3e8;
  --text: #0f172a; --muted: #5b6676; --accent: #f5c518; --accent-ink: #1a1400;
  --accent-text: #9a6b00; --good: #15803d; --warn: #b45309; --bad: #b91c1c;
  --good-bg: #e8f6ed; --warn-bg: #fdf3e2; --bad-bg: #fde8e8;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
  --radius: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0d12; --surface: #11161e; --surface-2: #171e28; --border: #232c39;
    --text: #e7ecf2; --muted: #8e9aab; --accent: #f5c518; --accent-ink: #1a1400;
    --accent-text: #f5c518; --good: #4ade80; --warn: #fbbf24; --bad: #f87171;
    --good-bg: rgba(74, 222, 128, .1); --warn-bg: rgba(251, 191, 36, .1); --bad-bg: rgba(248, 113, 113, .1);
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); text-underline-offset: 3px; }
a:hover { text-decoration-color: currentColor; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); margin: 0 0 .5rem; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.8rem); margin: 2.5rem 0 .75rem; }
h3 { font-size: 1.05rem; margin: 0 0 .5rem; }
p { margin: 0 0 1rem; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.num { font-variant-numeric: tabular-nums; }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 20; }
.site-header .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; letter-spacing: -0.02em; text-decoration: none; font-size: 1.15rem; }
.logo svg { width: 28px; height: 28px; flex: none; }
.logo b { color: var(--accent-text); }
.nav { display: flex; gap: 20px; margin-left: auto; font-size: .95rem; }
.nav a { text-decoration: none; color: var(--muted); font-weight: 500; }
.nav a:hover, .nav a[aria-current] { color: var(--text); }
@media (max-width: 640px) { .nav { gap: 14px; font-size: .875rem; } .nav .hide-sm { display: none; } }

/* Hero */
.hero { padding: 40px 0 24px; }
.hero p.lede { font-size: 1.125rem; color: var(--muted); max-width: 680px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chip { font-size: .8rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--muted); }
.chip::before { content: "✓ "; color: var(--good); }

/* Calculator layout */
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 440px); gap: 24px; align-items: start; }
@media (max-width: 900px) { .calc { grid-template-columns: 1fr; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.form-card { padding: 8px 20px 20px; }
fieldset { border: 0; padding: 16px 0 4px; margin: 0; border-top: 1px solid var(--border); }
fieldset:first-child { border-top: 0; }
legend { font-weight: 700; font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 0; margin-bottom: 10px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label, .lbl { font-weight: 600; font-size: .925rem; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 16px; }
@media (max-width: 520px) { .grid3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
select, input[type=number] {
  width: 100%; min-height: 44px; padding: 8px 12px; font: inherit; color: var(--text);
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; appearance: none;
}
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%238e9aab' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px;
}
select:focus, input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.seg { display: flex; background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 3px; gap: 3px; }
.seg label { flex: 1; text-align: center; cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg span { display: block; padding: 8px 6px; border-radius: 7px; font-size: .875rem; font-weight: 600; color: var(--muted); }
.seg input:checked + span { background: var(--accent); color: var(--accent-ink); box-shadow: var(--shadow); }
.seg input:focus-visible + span { outline: 2px solid var(--accent); }
.toggle { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; cursor: pointer; }
.toggle input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: #d4a106; flex: none; }
.toggle b { display: block; font-size: .925rem; }
.toggle span { font-size: .85rem; color: var(--muted); }
.stepper { display: flex; align-items: center; border: 1px solid var(--border); border-radius: 10px; background: var(--surface-2); overflow: hidden; }
.stepper button { width: 44px; height: 42px; border: 0; background: none; color: var(--text); font-size: 1.2rem; cursor: pointer; }
.stepper button:hover { background: var(--border); }
.stepper output { flex: 1; text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; }

/* Results */
.results { position: sticky; top: 76px; padding: 20px; }
@media (max-width: 900px) { .results { position: static; } }
.kicker { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.big { display: flex; align-items: baseline; gap: 8px; margin: 2px 0 2px; }
.big .w { font-size: clamp(3rem, 8vw, 4.25rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.big .u { font-size: 1.5rem; font-weight: 700; color: var(--muted); }
.sub { color: var(--muted); font-size: .925rem; margin-bottom: 14px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.stat { background: var(--surface-2); border-radius: 10px; padding: 10px; }
.stat .v { font-weight: 800; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
.stat .k { font-size: .75rem; color: var(--muted); line-height: 1.3; }
.meter { position: relative; height: 12px; background: var(--surface-2); border-radius: 999px; overflow: hidden; margin: 8px 0 4px; border: 1px solid var(--border); }
.meter i { position: absolute; top: 0; bottom: 0; left: 0; border-radius: 999px; }
.meter .m-sus { background: color-mix(in srgb, var(--accent) 40%, transparent); }
.meter .m-game { background: var(--accent); }
.meter .m-sweet { position: absolute; top: -1px; bottom: -1px; left: 40%; width: 20%; border-left: 2px dashed var(--good); border-right: 2px dashed var(--good); }
.legend { display: flex; flex-wrap: wrap; gap: 12px; font-size: .78rem; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; background: var(--accent); }
.legend .l2::before { background: color-mix(in srgb, var(--accent) 40%, transparent); }
.legend .l3::before { background: none; border: 2px dashed var(--good); width: 8px; height: 8px; }
.verdict { border-radius: 10px; padding: 12px 14px; margin: 14px 0; font-size: .925rem; }
.verdict b { display: block; font-size: 1rem; }
.verdict.good { background: var(--good-bg); color: var(--good); }
.verdict.tight { background: var(--warn-bg); color: var(--warn); }
.verdict.bad { background: var(--bad-bg); color: var(--bad); }
.verdict p { color: var(--text); margin: 4px 0 0; }
.note { font-size: .875rem; padding: 10px 0; border-top: 1px solid var(--border); }
.note b { display: block; margin-bottom: 2px; }
details.breakdown summary { cursor: pointer; font-weight: 600; font-size: .9rem; padding: 10px 0; border-top: 1px solid var(--border); }
.bd-row { display: flex; justify-content: space-between; font-size: .875rem; padding: 3px 0; font-variant-numeric: tabular-nums; }
.bd-row span:first-child { text-transform: capitalize; color: var(--muted); }

/* PSU picks */
.picks { display: grid; gap: 10px; margin-top: 6px; }
.pick { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: center; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.pick .tier { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--accent-text); }
.pick .name { font-weight: 700; }
.pick .why { font-size: .8rem; color: var(--muted); grid-column: 1; }
.pick .btns { grid-row: 1 / span 3; grid-column: 2; display: grid; gap: 6px; }
.badge { display: inline-block; font-size: .68rem; font-weight: 700; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--border); color: var(--muted); margin-left: 6px; vertical-align: 2px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 14px; border-radius: 10px; font-weight: 700; font-size: .875rem; text-decoration: none; border: 1px solid transparent; cursor: pointer; font-family: inherit; white-space: nowrap; }
.btn-buy { background: var(--accent); color: var(--accent-ink); }
.btn-buy:hover { filter: brightness(1.05); }
.btn-ghost { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--muted); }
.share { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.disclose { font-size: .75rem; color: var(--muted); margin-top: 10px; }

/* Content */
.section { padding: 8px 0 24px; }
.prose { max-width: 760px; }
.prose li { margin-bottom: .4rem; }
.cols3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 800px) { .cols3 { grid-template-columns: 1fr; } }
.feature { padding: 18px; }
.feature p { color: var(--muted); font-size: .925rem; margin: 0; }
.gpu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.gpu-grid a { display: flex; justify-content: space-between; gap: 8px; padding: 10px 12px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; text-decoration: none; font-size: .9rem; font-weight: 600; }
.gpu-grid a:hover { border-color: var(--accent); }
.gpu-grid a span { color: var(--muted); font-weight: 500; font-variant-numeric: tabular-nums; white-space: nowrap; }
table { width: 100%; border-collapse: collapse; font-size: .925rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }
.faq details { border-bottom: 1px solid var(--border); padding: 14px 0; }
.faq summary { font-weight: 700; cursor: pointer; }
.faq details p { margin: 8px 0 0; color: var(--muted); }
.answer { padding: 24px; display: grid; grid-template-columns: auto 1fr; gap: 8px 28px; align-items: center; }
@media (max-width: 640px) { .answer { grid-template-columns: 1fr; } }
.crumbs { font-size: .85rem; color: var(--muted); padding-top: 20px; }
.crumbs a { color: var(--muted); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; padding: 20px; margin: 24px 0; }
.site-footer { border-top: 1px solid var(--border); margin-top: 48px; padding: 28px 0 40px; font-size: .875rem; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 10px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-weight: 600; font-size: .9rem; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 50; }
.toast.show { opacity: 1; }

/* Mobile result bar */
.mbar { display: none; }
@media (max-width: 900px) {
  .mbar { display: flex; position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 30; align-items: center; justify-content: space-between; gap: 12px;
    padding: 10px 10px 10px 16px; border-radius: 14px; background: var(--text); color: var(--bg); box-shadow: 0 8px 30px rgba(0,0,0,.35); transition: transform .2s, opacity .2s; }
  .mbar.hide { transform: translateY(140%); opacity: 0; }
  .mbar b { font-size: 1.35rem; font-variant-numeric: tabular-nums; }
  .mbar small { display: block; font-size: .75rem; opacity: .75; }
  .mbar .btn { background: var(--accent); color: var(--accent-ink); }
}