:root {
  --paper: #fafafa;
  --ink: #0a0a0a;
  --g100: #f5f5f5;
  --g300: #d4d4d4;
  --g500: #737373;
  --g800: #262626;
  --red: #e63946;
  --surface: #ffffff;
  --head: 'Space Grotesk', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f0f0f; --ink: #f2f2f2; --g100: #1a1a1a; --g300: #333; --g500: #9a9a9a; --g800: #d4d4d4; --surface: #141414;
  }
}
:root[data-theme="dark"] { --paper: #0f0f0f; --ink: #f2f2f2; --g100: #1a1a1a; --g300: #333; --g500: #9a9a9a; --g800: #d4d4d4; --surface: #141414; }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.6 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1, h2, h3 { font-family: var(--head); font-weight: 700; line-height: 1.1; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.1rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.15rem; font-weight: 500; margin-top: 1.6em; }
p { margin: 0 0 1em; max-width: 70ch; }
a { color: inherit; text-decoration-color: var(--g300); text-underline-offset: 3px; transition: color .15s; }
a:hover { color: var(--red); }
.red { color: var(--red); }
.mono { font-family: var(--mono); }
.kicker { font: 500 12px/1.4 var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--g500); margin-bottom: 14px; display: block; }
.kicker b { color: var(--red); font-weight: 500; }
.muted { color: var(--g500); }
small, .small { font-size: 13px; }

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }
section { padding: 72px 0; border-top: 3px solid var(--ink); }
section.flush { border-top: 0; }

/* nav */
nav.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(6px); border-bottom: 1px solid var(--g300); }
nav.top .wrap { display: flex; gap: 18px; align-items: center; height: 48px; overflow-x: auto; scrollbar-width: none; }
nav.top a { font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; text-decoration: none; white-space: nowrap; color: var(--g500); }
nav.top a:hover, nav.top a.on { color: var(--red); }
nav.top .brand { color: var(--ink); font-weight: 700; margin-right: auto; }
#theme { background: none; border: 1px solid var(--g300); color: var(--ink); font: 11px var(--mono); padding: 4px 8px; cursor: pointer; }

/* hero */
.hero { background: #0a0a0a; color: #fafafa; border: 0; padding: 0; }
.hero .img { height: clamp(240px, 44vw, 600px); background: url(img/hero.jpg) center 40%/cover; position: relative; }
.hero .img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 45%, #0a0a0a 100%); }
.hero .cap { position: absolute; right: 16px; bottom: 12px; z-index: 1; font: 10px var(--mono); color: #bbb; text-transform: uppercase; letter-spacing: .08em; }
.hero .wrap { padding-top: 8px; padding-bottom: 56px; }
.hero .kicker { color: #9a9a9a; }
.hero p.lede { font-size: 1.15rem; color: #d4d4d4; max-width: 60ch; }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); border: 2px solid currentColor; margin-top: 32px; }
@media (min-width: 820px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { padding: 18px 18px 16px; border-right: 1px solid color-mix(in srgb, currentColor 30%, transparent); border-bottom: 1px solid color-mix(in srgb, currentColor 30%, transparent); }
.stat .v { font: 700 clamp(1.6rem, 3.4vw, 2.3rem)/1 var(--head); margin: 6px 0 6px; }
.stat .l { font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; opacity: .65; }
.stat .s { font-size: 13px; opacity: .7; }
.stat.hot .v { color: var(--red); }

/* layout */
.grid2 { display: grid; gap: 32px; }
@media (min-width: 900px) { .grid2 { grid-template-columns: 1fr 1fr; } .grid2.wide-left { grid-template-columns: 1.4fr 1fr; } }
.card { border: 1px solid var(--g300); background: var(--surface); padding: 20px; }
.card.ink { border: 2px solid var(--ink); }
.verdict { list-style: none; padding: 0; margin: 0; counter-reset: v; }
.verdict li { counter-increment: v; padding: 14px 0 14px 52px; position: relative; border-bottom: 1px solid var(--g300); max-width: 80ch; }
.verdict li::before { content: counter(v, decimal-leading-zero); position: absolute; left: 0; top: 15px; font: 500 13px var(--mono); color: var(--red); }

/* tables */
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--g500); text-align: left; padding: 8px 10px; border-bottom: 2px solid var(--ink); white-space: nowrap; }
.tbl td { padding: 8px 10px; border-bottom: 1px solid var(--g300); vertical-align: top; }
.tbl td.n, .tbl th.n { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl tr.grp td { background: var(--g100); font-weight: 600; cursor: pointer; }
.tbl tr.grp td:first-child::before { content: '+ '; font-family: var(--mono); color: var(--g500); }
.tbl tr.grp.open td:first-child::before { content: '− '; }
.tbl tr.line { display: none; }
.tbl tr.line.show { display: table-row; }
.tbl tr.line td { color: var(--g800); font-size: 13px; }
.tbl tr.tot td { border-top: 2px solid var(--ink); border-bottom: 0; font-weight: 700; }
.tbl .note { display: block; color: var(--g500); font-size: 12px; }
.scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tag { font: 500 10px var(--mono); padding: 1px 5px; border: 1px solid var(--g300); color: var(--g500); margin-left: 6px; vertical-align: 1px; }
.tag.v { border-color: var(--ink); color: var(--ink); }

/* figures */
figure { margin: 0; }
figcaption { font: 12px var(--mono); color: var(--g500); text-transform: uppercase; letter-spacing: .06em; margin-top: 10px; }
.plan svg { width: 100%; height: auto; display: block; }
.plan text { font-family: var(--mono); }
.map { width: 100%; aspect-ratio: 4/3; border: 1px solid var(--g300); filter: grayscale(.6); }

/* 3d */
#viewer { position: relative; height: min(78vh, 720px); min-height: 420px; border: 2px solid var(--ink); background: #e9eef1; }
#viewer canvas { display: block; width: 100%; height: 100%; touch-action: none; }
.vctl { position: absolute; left: 10px; top: 10px; display: flex; flex-wrap: wrap; gap: 6px; max-width: calc(100% - 20px); z-index: 2; }
.vctl button, .seg button, .btn { font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; background: #fafafa; color: #0a0a0a; border: 1px solid #0a0a0a; padding: 7px 10px; cursor: pointer; transition: background .15s, color .15s; }
.vctl button.on, .seg button.on, .btn:hover, .vctl button:hover { background: #0a0a0a; color: #fafafa; }
.vctl button.on { border-color: #0a0a0a; }
.vhint { position: absolute; right: 10px; bottom: 10px; font: 10px var(--mono); color: #555; text-transform: uppercase; background: #fafafacc; padding: 4px 6px; }
.vlegend { position: absolute; left: 10px; bottom: 10px; font: 11px var(--mono); background: #fafafae6; color: #0a0a0a; padding: 8px 10px; border: 1px solid #0a0a0a; max-width: 260px; }
.vlegend b { color: #e63946; }

/* calculator */
.calc { display: grid; gap: 28px; }
@media (min-width: 960px) { .calc { grid-template-columns: 340px 1fr; } }
.ctl { margin-bottom: 18px; }
.ctl label { display: flex; justify-content: space-between; font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--g500); margin-bottom: 6px; }
.ctl label output { color: var(--ink); font-size: 13px; }
input[type=range] { width: 100%; accent-color: var(--red); }
.seg { display: flex; }
.seg button { flex: 1; border-right-width: 0; }
.seg button:last-child { border-right-width: 1px; }
:root[data-theme="dark"] .seg button:not(.on) { background: transparent; color: var(--ink); border-color: var(--ink); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .seg button:not(.on) { background: transparent; color: var(--ink); border-color: var(--ink); } }
.check { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.kpis { display: grid; grid-template-columns: repeat(2, 1fr); border: 2px solid var(--ink); margin-bottom: 24px; }
@media (min-width: 700px) { .kpis { grid-template-columns: repeat(3, 1fr); } }
.kpis .stat .l { opacity: 1; color: var(--g500); }
.kpis .stat .s { opacity: 1; color: var(--g500); }

.chart { position: relative; }
.chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart .ax { font: 11px var(--mono); fill: var(--g500); }
.chart .grid { stroke: var(--g300); stroke-width: 1; }
.chart .zero { stroke: var(--ink); stroke-width: 1; }
.tip { position: absolute; pointer-events: none; background: var(--ink); color: var(--paper); font: 12px/1.45 var(--mono); padding: 7px 9px; opacity: 0; transition: opacity .12s; white-space: nowrap; z-index: 5; }
.tip b { color: var(--red); font-weight: 500; }
.legend { display: flex; gap: 16px; font: 11px var(--mono); color: var(--g500); text-transform: uppercase; margin: 6px 0 10px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; margin-right: 6px; vertical-align: -1px; }

.risks { display: grid; gap: 0; border-top: 1px solid var(--g300); }
.risk { display: grid; grid-template-columns: 90px 1fr; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--g300); }
.risk .lvl { font: 500 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.risk .lvl.hi { color: var(--red); }
.sources { font-size: 13px; columns: 1; padding-left: 18px; }
@media (min-width: 900px) { .sources { columns: 2; column-gap: 40px; } }
.sources li { break-inside: avoid; margin-bottom: 6px; color: var(--g800); }
footer { background: #0a0a0a; color: #bbb; padding: 40px 0; font-size: 13px; }
footer b { color: #fafafa; }

.elev svg { width: 100%; height: auto; }
.pill { display: inline-block; font: 500 11px var(--mono); border: 1px solid var(--ink); padding: 2px 8px; text-transform: uppercase; letter-spacing: .06em; }
.pill.red { border-color: var(--red); color: var(--red); }
.calc > *, .grid2 > * { min-width: 0; }
.seg.mini { width: auto; margin: 0 4px 0 auto; }
.seg.mini button { padding: 4px 7px; font-size: 10px; flex: none; }
nav.top .brand { margin-right: 0; }
.hero .seg button:not(.on) { background: transparent; color: #fafafa; border-color: #fafafa; }
.hero .seg button.on { background: #fafafa; color: #0a0a0a; }
#ctxMap svg { border: 1px solid var(--g300); }