:root {
  color-scheme: dark;
  /* deep navy with electric blue / cyan */
  --bg: #060a16;
  --bg-alt: #0a1122;
  --surface: #0f182e;
  --surface-2: #16223f;
  --border: #1e2c4e;
  --text: #e8eefc;
  --text-2: #a7b6d6;
  --muted: #6b7ca0;
  --accent: #2e8dff;          /* electric blue */
  --accent-2: #34e3f0;        /* cyan, secondary glow */
  --accent-ink: #04101f;
  --godot: #8b7cff;           /* series 1 */
  --phaser: #ff8a4c;          /* series 2 */
  --bar: #2e8dff;
  --track: #1b2643;
  --hover-border: #2f4372;
  --nav-bg: rgba(6, 10, 22, .55);
  --nav-bg-solid: rgba(6, 10, 22, .92);
  --chip-bg: rgba(3, 6, 14, .8);
  --overlay: rgba(2, 5, 12, .84);
  --stripe-a: #0b1224;
  --stripe-b: #0e1730;
  --media-bg: #03060e;
  --s-hi: #3be0a8; --s-mid: #f2c65c; --s-lo: #ff7286;
  --radius: 14px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --gutter: clamp(16px, 4vw, 40px);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
button, select, input { font: inherit; color: inherit; }
.wrap { max-width: 1240px; margin: 0 auto; padding-inline: var(--gutter); }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: 60px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-inline: var(--gutter);
  background: var(--nav-bg); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s, background .2s;
}
.nav.scrolled { background: var(--nav-bg-solid); border-color: var(--border); }
.brand { font: 700 18px var(--display); text-decoration: none; display: flex; align-items: center; gap: 8px; }
.brand-mark { color: var(--accent-2); font-size: 14px; }
.nav-links { display: flex; gap: 4px; overflow-x: auto; scrollbar-width: none; }
.nav-links a { text-decoration: none; color: var(--text-2); padding: 6px 10px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.nav-links a:hover { color: var(--text); background: var(--surface); }
@media (max-width: 720px) { .nav-links a:not([href="#gallery"]):not([href="#compare"]) { display: none; } }

/* ---------- hero ---------- */
.hero { position: relative; min-height: min(92vh, 860px); display: grid; place-items: center; overflow: hidden; isolation: isolate; padding-block: 100px 60px; }
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.hero-bg video { width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 45%, rgba(6,10,22,.74) 0%, rgba(6,10,22,.38) 60%, transparent 100%),
    linear-gradient(to bottom, rgba(6,10,22,.62) 0%, transparent 25%, transparent 70%, var(--bg) 100%);
}
.hero-inner { text-align: center; padding-inline: var(--gutter); max-width: 920px; }
.eyebrow { display: inline-block; font: 600 12px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--accent-2); background: rgba(46,141,255,.08); border: 1px solid rgba(46,141,255,.25); padding: 6px 12px; border-radius: 999px; margin: 0 0 22px; }
.hero h1 { font-size: clamp(56px, 11vw, 128px); font-weight: 700; letter-spacing: -0.04em; text-shadow: 0 6px 40px rgba(0,0,0,.5); }
.hero-sub { font-size: clamp(17px, 2.2vw, 22px); color: var(--text); max-width: 760px; margin: 14px auto 10px; text-shadow: 0 2px 16px rgba(0,0,0,.7); }
.authors { color: var(--muted); margin: 0 0 30px; }
.hero-cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--border); text-decoration: none; cursor: pointer;
  font-weight: 600; font-size: 14px; transition: border-color .15s, background .15s, transform .15s;
}
.btn:hover { border-color: var(--hover-border); background: var(--surface-2); }
.btn small { font: 500 10px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.btn[aria-disabled="true"] { cursor: default; opacity: .75; }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); box-shadow: 0 0 0 1px rgba(52,227,240,.22), 0 8px 26px rgba(46,141,255,.28); }
.btn-primary:hover { background: #5aa8ff; border-color: #5aa8ff; transform: translateY(-1px); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* ---------- sections ---------- */
.section { padding-block: clamp(64px, 9vw, 110px); }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-head { max-width: 780px; margin-bottom: 36px; }
.section-head h2, .overview h2 { font-size: clamp(30px, 4.2vw, 44px); margin-bottom: 12px; }
.section-head p { color: var(--text-2); margin: 0; font-size: 16px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin: -150px 0 72px; position: relative; }
.stat { background: rgba(15,24,46,.92); backdrop-filter: blur(8px); padding: 22px 24px; }
.stat b { display: block; font: 700 clamp(28px, 4vw, 40px) var(--display); color: var(--accent); letter-spacing: -0.02em; }
.stat span { color: var(--text-2); font-size: 14px; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); margin-top: -60px; } }

.overview { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.overview p { color: var(--text-2); font-size: 16px; }
.overview strong { color: var(--text); }
.stages { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; position: relative; }
.stages li { display: flex; gap: 16px; align-items: flex-start; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.stages li:nth-child(3) { border-color: rgba(46,141,255,.35); }
.stage-tag { font: 700 13px var(--mono); color: var(--accent-ink); background: var(--accent); border-radius: 8px; padding: 4px 8px; }
.stages h3 { font-size: 19px; margin-bottom: 2px; }
.stages p { margin: 0; font-size: 14px; }
.overview-foot { color: var(--muted); margin: 28px 0 0; max-width: 900px; }
@media (max-width: 860px) { .overview { grid-template-columns: 1fr; } }

/* ---------- before / after ---------- */
.compare-list { display: grid; gap: 28px; }
.compare { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.compare-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 16px; margin-bottom: 14px; }
.compare-head h3 { font-size: 20px; }
.compare-head button { background: none; border: 0; padding: 0; cursor: pointer; text-align: left; }
.compare-head button:hover h3 { color: var(--accent); }
.compare-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.compare-side { display: grid; gap: 8px; }
.compare-label { display: flex; justify-content: space-between; align-items: center; font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.compare-label b { font-size: 15px; color: var(--text); letter-spacing: 0; }
.compare-label .after { color: var(--accent); }
.frame { position: relative; aspect-ratio: 16 / 9; max-width: 100%; border-radius: 10px; overflow: hidden; background: var(--media-bg); border: 1px solid var(--border); }
.frame img, .frame video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pending { display: grid; place-items: center; text-align: center; color: var(--muted); font-size: 14px;
  background: repeating-linear-gradient(135deg, var(--stripe-a) 0 12px, var(--stripe-b) 12px 24px); }
.pending b { display: block; color: var(--text-2); font: 600 15px var(--display); margin-bottom: 2px; }
@media (max-width: 700px) { .compare-pair { grid-template-columns: 1fr; } }

/* ---------- gallery ---------- */
.filters { position: sticky; top: 60px; z-index: 20; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding-block: 12px; margin-bottom: 18px; background: var(--nav-bg-solid); backdrop-filter: blur(10px); }
.seg { display: inline-flex; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 3px; }
.seg button { border: 0; background: none; padding: 6px 14px; border-radius: 7px; cursor: pointer; color: var(--text-2); font-weight: 500; font-size: 14px; }
.seg button.on { background: var(--surface-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--hover-border); }
.filters select, .filters input { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 8px 12px; font-size: 14px; }
.filters input { flex: 1 1 180px; min-width: 0; }
.filters select:focus, .filters input:focus { outline: 2px solid rgba(46,141,255,.5); outline-offset: 1px; }
.count { color: var(--muted); font: 500 13px var(--mono); margin-left: auto; }
@media (max-width: 720px) { .filters { position: static; } }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 18px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; cursor: pointer; transition: transform .18s, border-color .18s, box-shadow .18s; text-align: left; padding: 0; display: flex; flex-direction: column; }
.card:hover, .card:focus-visible { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 0 0 1px rgba(46,141,255,.35), 0 18px 44px rgba(4,20,52,.6), 0 0 34px rgba(46,141,255,.16); outline: none; }
.card .frame { border: 0; border-radius: 0; }
.card .frame video { opacity: 0; transition: opacity .25s; }
.card .frame video.ready { opacity: 1; }
.badge { position: absolute; top: 10px; left: 10px; font: 600 11px var(--mono); padding: 3px 8px; border-radius: 6px; background: var(--chip-bg); color: var(--chip-text, #fff); backdrop-filter: blur(6px); display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex: none; }
.dot.godot { background: var(--godot); } .dot.phaser { background: var(--phaser); }
.score-chip { position: absolute; top: 10px; right: 10px; font: 700 15px var(--mono); padding: 3px 9px; border-radius: 7px; background: var(--chip-bg); color: var(--chip-text, #fff); backdrop-filter: blur(6px); }
.no-media { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font: 500 13px var(--mono); background: repeating-linear-gradient(135deg, var(--stripe-a) 0 12px, var(--stripe-b) 12px 24px); }
.card-body { padding: 12px 14px 14px; display: grid; gap: 8px; flex: 1; align-content: start; }
.card-genre { font: 500 11px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.card h3 { font-size: 17px; }
.mdva { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 2px; }
.mdva div { display: grid; gap: 4px; }
.mdva span { font: 500 10px var(--mono); color: var(--muted); display: flex; gap: 5px; }
.mdva span b { color: var(--text-2); font-weight: 500; }
.meter { height: 4px; border-radius: 4px; background: var(--track); overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--bar); border-radius: 4px; }
.more { display: flex; justify-content: center; margin-top: 28px; }
.empty { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 60px 0; }

/* ---------- results ---------- */
.results { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; }
@media (max-width: 900px) { .results { grid-template-columns: 1fr; } }
.chart-card { margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 18px 12px; min-width: 0; }
.chart-card h3 { font-size: 17px; }
.chart-card figcaption p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.legend { display: flex; gap: 16px; margin: 12px 0 4px; font-size: 13px; color: var(--text-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.strip, .cats { overflow-x: auto; }
.strip svg, .cats svg { display: block; width: 100%; height: auto; min-width: 320px; }
.axis text { fill: var(--muted); font: 11px var(--mono); }
.axis line, .axis path { stroke: var(--border); }
.grid-line { stroke: var(--track); }
.strip-dot { stroke: var(--surface); stroke-width: 1.5; }
.mean-line { stroke: var(--text); stroke-width: 2; stroke-dasharray: 3 3; opacity: .7; }
.row-label { fill: var(--text-2); font: 600 12px var(--font); }
.val-label { fill: var(--text-2); font: 500 11px var(--mono); }
.hit { cursor: pointer; }
.table-wrap { overflow-x: auto; margin-top: 18px; border: 1px solid var(--border); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--surface); }
.table th, .table td { padding: 11px 16px; text-align: right; white-space: nowrap; border-bottom: 1px solid var(--border); }
.table th:first-child, .table td:first-child { text-align: left; }
.table th { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); background: var(--bg-alt); }
.table td { font-family: var(--mono); }
.table td:first-child { font-family: var(--font); font-weight: 600; }
.table tr:last-child td { border-bottom: 0; }
.note { color: var(--muted); font-size: 13px; margin: 12px 0 0; }
.tip { position: fixed; z-index: 200; pointer-events: none; background: var(--media-bg); color: #fff; border: 1px solid var(--hover-border); border-radius: 8px; padding: 8px 10px; font-size: 13px; max-width: 260px; box-shadow: 0 8px 24px rgba(0,0,0,.5); }
.tip b { font-family: var(--mono); }

/* ---------- citation ---------- */
.bibtex { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; overflow-x: auto; font: 13px/1.6 var(--mono); color: var(--text-2); margin: 0; }
.copy { position: absolute; top: 12px; right: 12px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 4px 10px; cursor: pointer; font: 500 12px var(--mono); }
.footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; padding-block: 28px; }

/* ---------- modal ---------- */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: clamp(0px, 3vw, 32px); }
.modal-backdrop { position: absolute; inset: 0; background: var(--overlay); backdrop-filter: blur(6px); }
.modal-panel { position: relative; width: min(1320px, 100%); height: min(880px, 100%); background: var(--bg-alt); border: 1px solid var(--border); border-radius: 18px; display: grid; grid-template-columns: 1.35fr 1fr; overflow: hidden; }
.modal-close { position: absolute; top: 12px; right: 12px; z-index: 3; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface); cursor: pointer; }
.modal-media { padding: 20px; display: flex; flex-direction: column; gap: 12px; min-height: 0; overflow-y: auto; border-right: 1px solid var(--border); }
.modal-media > * { flex-shrink: 0; }
.player { position: relative; aspect-ratio: 16 / 9; max-width: 100%; background: #000; border-radius: 12px; overflow: hidden; }
.player video { width: 100%; height: 100%; object-fit: contain; }
.demo-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.demo-tabs button { border: 1px solid var(--border); background: var(--surface); border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 13px; color: var(--text-2); display: inline-flex; gap: 8px; align-items: center; }
.demo-tabs button small { font: 500 11px var(--mono); color: var(--muted); }
.demo-tabs button.on { border-color: var(--accent); color: var(--text); background: rgba(46,141,255,.08); }
.modal-nav { display: flex; align-items: center; justify-content: space-between; margin-top: auto; color: var(--muted); font: 500 12px var(--mono); }
.modal-info { padding: 24px 24px 32px; overflow-y: auto; min-height: 0; }
.m-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; padding-right: 40px; }
.pill { font: 500 12px var(--mono); padding: 3px 9px; border-radius: 6px; background: var(--surface); border: 1px solid var(--border); color: var(--text-2); display: inline-flex; align-items: center; gap: 6px; }
.modal-info h2 { font-size: 28px; }
.m-blurb { color: var(--text-2); margin: 6px 0 16px; }
.m-score { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.m-overall b { display: block; font: 700 40px/1 var(--mono); color: var(--text); }
.m-overall span { font: 500 11px var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.m-cats { display: grid; gap: 7px; }
.m-cat { display: grid; grid-template-columns: 128px 1fr 38px; gap: 10px; align-items: center; font-size: 13px; color: var(--text-2); }
.m-cat .meter { height: 6px; }
.m-cat b { font: 600 12px var(--mono); text-align: right; color: var(--text); }
.m-prompt { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 4px; }
.m-prompt h3 { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.m-prompt p { color: var(--text-2); font-size: 14px; margin: 6px 0 0; max-width: 72ch; }
.twin { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 10px; padding: 10px 14px; border-radius: 10px; border: 1px dashed var(--hover-border); font-size: 14px; color: var(--text-2); background: none; width: 100%; cursor: pointer; text-align: left; }
.twin:hover { border-color: var(--accent); color: var(--text); }
.twin b { font-family: var(--mono); color: var(--text); }
.m-h { font-size: 17px; margin: 24px 0 2px; }
.m-hint { color: var(--muted); font-size: 12px; margin: 0 0 10px; }
.req-cat { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 16px 0 6px; }
.req { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); margin-bottom: 6px; }
.req > button { width: 100%; display: grid; grid-template-columns: 30px 1fr 46px; gap: 10px; align-items: start; background: none; border: 0; padding: 10px 12px; cursor: pointer; text-align: left; }
.req-id { font: 700 12px var(--mono); color: var(--muted); padding-top: 1px; }
.req-desc { font-size: 13px; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.req.open .req-desc { -webkit-line-clamp: unset; }
.req-score { font: 700 13px var(--mono); text-align: right; }
.req-body { padding: 0 12px 12px 52px; font-size: 13px; }
.req-demos { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 8px; }
.req-demos button { font: 500 11px var(--mono); border: 1px solid var(--border); background: var(--bg-alt); border-radius: 6px; padding: 2px 7px; cursor: pointer; color: var(--text-2); }
.req-demos button.on { border-color: var(--accent); color: var(--text); }
.rationale { color: var(--text); background: var(--bg-alt); border-left: 2px solid var(--accent); padding: 8px 10px; border-radius: 0 8px 8px 0; margin: 0; }
.s-hi { color: var(--s-hi); } .s-mid { color: var(--s-mid); } .s-lo { color: var(--s-lo); }
@media (max-width: 900px) {
  .modal { padding: 0; }
  .modal-panel { grid-template-columns: 1fr; height: 100%; border-radius: 0; overflow-y: auto; display: block; }
  .modal-media { border-right: 0; overflow: visible; padding: 12px 12px 8px; }
  .modal-nav { display: none; }
  .modal-info { overflow: visible; padding: 16px; }
  .m-cat { grid-template-columns: 110px 1fr 38px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .btn { transition: none; }
}

/* ---------- design-version switcher (preview only) ---------- */
.vswitch { position: fixed; right: 16px; bottom: 16px; z-index: 300; display: flex; gap: 2px; padding: 4px; border-radius: 999px;
  background: rgba(0,0,0,.78); border: 1px solid rgba(255,255,255,.18); backdrop-filter: blur(8px); font: 600 12px/1 ui-monospace, Menlo, monospace; }
.vswitch a { color: #cfd5e2; text-decoration: none; padding: 7px 10px; border-radius: 999px; }
.vswitch a.on { background: #fff; color: #000; }

/* ---------- before/after wipe ---------- */
@property --pos { syntax: "<percentage>"; inherits: true; initial-value: 50%; }
.wipe { touch-action: pan-y; cursor: ew-resize; user-select: none; }
.wipe .w-after { position: absolute; inset: 0; clip-path: inset(0 0 0 var(--pos)); }
.wipe .w-img, .wipe video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.wipe video { opacity: 0; transition: opacity .25s; }
.wipe video.ready { opacity: 1; }
.wipe.auto { animation: wipe-sweep 9s ease-in-out infinite alternate; }
@keyframes wipe-sweep { 0%, 8% { --pos: 14%; } 92%, 100% { --pos: 86%; } }
.w-handle { position: absolute; top: 0; bottom: 0; left: var(--pos); width: 2px; margin-left: -1px; background: var(--accent); box-shadow: 0 0 0 1px rgba(0,0,0,.35); pointer-events: none; }
.w-handle i { position: absolute; top: 50%; left: 50%; width: 26px; height: 26px; margin: -13px 0 0 -13px; border-radius: 50%; background: var(--accent); box-shadow: 0 2px 10px rgba(0,0,0,.5); }
.w-handle i::before, .w-handle i::after { content: ""; position: absolute; top: 8px; border: 5px solid transparent; }
.w-handle i::before { left: 1px; border-right-color: var(--accent-ink); }
.w-handle i::after { right: 1px; border-left-color: var(--accent-ink); }
.w-label { position: absolute; bottom: 10px; font: 700 11px var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 3px 8px; border-radius: 6px; background: var(--chip-bg); color: #fff; pointer-events: none; }
.w-l { left: 10px; }
.w-r { right: 10px; color: var(--accent-ink); background: var(--accent); }
@media (prefers-reduced-motion: reduce) { .wipe.auto { animation: none; } }

/* ---------- series: generators ---------- */
:root { --gpt: #8b7cff; --kimi: #4cc3ff; --glm: #5fd38d; --qwen: #ff8a4c; --sft: #ffc94c; --up: #3be0a8; --down: #ff7286; }
.dot.gpt { background: var(--gpt); } .dot.kimi { background: var(--kimi); } .dot.glm { background: var(--glm); } .dot.qwen { background: var(--qwen); } .dot.sft { background: var(--sft); }

/* ---------- before/after modal ---------- */
.player.is-sbs { aspect-ratio: auto; background: none; }
.player .m-wipe { position: absolute; inset: 0; }
.sbs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sbs .frame { border-radius: 10px; }
.sbs .frame .w-img, .sbs .frame video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.sbs .frame video { opacity: 0; transition: opacity .25s; } .sbs .frame video.ready { opacity: 1; }
.pair-ctl { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.seg-sm button { padding: 4px 10px; font-size: 13px; }
.pair-demo { color: var(--muted); font: 500 12px var(--mono); margin-left: auto; }
.m-pairscore { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; }
.m-pairscore > div { display: grid; gap: 2px; }
.m-pairscore span { order: -1; }
.m-pairscore b.was { color: var(--muted); font-size: 30px; }
.m-pairscore .arrow { font-style: normal; color: var(--muted); font-size: 22px; padding-bottom: 6px; }
.delta { font: 700 14px var(--mono); font-style: normal; padding: 3px 8px; border-radius: 6px; margin-bottom: 6px; }
.delta.up { color: var(--accent-ink); background: var(--accent); }
.delta.down { color: #fff; background: #7a2434; }
.delta.flat { color: var(--text-2); background: var(--surface-2); }
.m-score:has(.m-pairscore) { grid-template-columns: 1fr; }
.m-score:has(.m-pairscore) .m-cat { grid-template-columns: 128px 1fr 64px; }
.meter-pair { position: relative; overflow: visible; }
.meter-pair .m-final { position: absolute; inset: 0 auto 0 0; }
.meter-pair .m-p0 { position: absolute; top: -3px; bottom: -3px; width: 2px; margin-left: -1px; background: var(--text); border-radius: 1px; opacity: .8; }
.req-pair { white-space: nowrap; min-width: 52px; }
.req > button:has(.req-pair) { grid-template-columns: 30px 1fr 64px; }
.req-pair.up { color: var(--up); } .req-pair.down { color: var(--down); } .req-pair.flat { color: var(--text-2); }
.rationale.was { border-left-color: var(--muted); color: var(--text-2); margin-bottom: 6px; }
.rationale b { font: 700 11px var(--mono); color: var(--muted); }

.m-evo { border-top: 1px solid var(--border); padding-top: 14px; }
.evo-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 14px; margin-bottom: 6px; }
.evo-head h3 { font-size: 16px; }
.evo-legend { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font: 500 12px var(--mono); flex-wrap: wrap; }
.evo-legend .sw { width: 10px; height: 10px; border-radius: 2px; display: inline-block; margin-left: 6px; }
.sw.repair { background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--hover-border); } .sw.art { background: rgba(46,141,255,.28); }
.evo-chart-wrap { overflow-x: auto; }
.evo-chart { display: block; width: 100%; min-width: 420px; height: auto; }
.evo-line { fill: none; stroke: var(--accent); stroke-width: 2; }
.evo-dot { fill: var(--accent); stroke: var(--bg-alt); stroke-width: 2; }
.evo-cell { cursor: pointer; outline: none; }
.evo-cell rect { fill: var(--surface-2); stroke: var(--border); }
.evo-cell.art rect { fill: rgba(46,141,255,.16); stroke: rgba(46,141,255,.3); }
.evo-cell:hover rect, .evo-cell:focus-visible rect { stroke: var(--text-2); }
.evo-cell.on rect { stroke: var(--accent); stroke-width: 2; }
.evo-mark { font: 700 12px var(--mono); pointer-events: none; }
.evo-mark.s-hi { fill: var(--s-hi); } .evo-mark.s-lo { fill: var(--s-lo); }
.evo-detail { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-top: 8px; font-size: 13px; }
.evo-detail-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin-bottom: 6px; }
.evo-detail-head b { font-family: var(--mono); }
.evo-detail .pill.s-hi { color: var(--s-hi); } .evo-detail .pill.s-lo { color: var(--s-lo); }
.pill.kind-art { color: var(--accent); }
.evo-meta { color: var(--muted); font: 500 12px var(--mono); }
.evo-detail p { margin: 6px 0 0; color: var(--text-2); display: grid; grid-template-columns: 70px 1fr; gap: 8px; }
.evo-k { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding-top: 2px; }


/* ---- play section: six finished games, base / delivered switch, embedded via iframe ---- */
#play .playbar{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}
#play .playbtn{display:flex;flex-direction:column;align-items:flex-start;gap:2px;
  padding:9px 14px;border:1px solid var(--line,#2b2e36);border-radius:9px;
  background:transparent;color:inherit;cursor:pointer;font:inherit;line-height:1.25}
#play .playbtn b{font-size:14px}
#play .playbtn span{font-size:11px;opacity:.62}
#play .playbtn[aria-pressed="true"]{border-color:var(--accent);background:rgba(46,141,255,.12)}
#play .playbtn:hover{border-color:var(--accent)}
#play .playwho{margin:0 0 10px}
#play .playwho b{display:block;font-size:18px;line-height:1.2}
#play .playwho span{font-size:12.5px;opacity:.7}
/* before/after switch: full width, directly above the game, with the score as the largest element */
#play .segbig{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 12px}
#play .segbig button{display:grid;gap:2px;padding:14px 18px;cursor:pointer;font:inherit;
  text-align:left;border:2px solid var(--line,#2b2e36);border-radius:12px;
  background:transparent;color:inherit;transition:border-color .12s,background .12s}
#play .segbig button:hover{border-color:var(--accent)}
#play .segbig .sg-lab{font-size:13px;font-weight:600;letter-spacing:.02em;opacity:.8}
#play .segbig .sg-num{font-size:34px;font-weight:700;line-height:1.05;
  font-variant-numeric:tabular-nums}
#play .segbig .sg-hint{font-size:11.5px;opacity:.6}
#play .segbig button[aria-pressed="true"]{border-color:var(--accent);background:rgba(46,141,255,.16)}
#play .segbig button[aria-pressed="true"] .sg-lab{opacity:1;color:var(--accent)}
#play .segbig button[aria-pressed="true"] .sg-num{color:var(--accent)}
@media (max-width:560px){#play .segbig{grid-template-columns:1fr}
  #play .segbig .sg-num{font-size:28px}}
#play .playframe{position:relative;width:100%;aspect-ratio:16/9;min-height:340px;
  border:1px solid var(--line,#2b2e36);border-radius:12px;overflow:hidden;background:#0b0d10}
#play .playframe iframe{width:100%;height:100%;border:0;display:block}
#play .playnote{margin:10px 0 0;font-size:12.5px;opacity:.72}
@media (max-width:640px){#play .playframe{aspect-ratio:4/3}#play .playhead{align-items:flex-start}}


/* ================= cyber layer =================
   decoration layer: neon grid, glow, HUD corners, scan lines. Only on
   ::before/::after and hover, never changing layout; all animation off under reduced motion. */

/* hero: perspective grid, centre glow, a bright bottom edge */
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    radial-gradient(ellipse 50% 40% at 50% 38%, rgba(52,227,240,.16), transparent 70%),
    linear-gradient(rgba(46,141,255,.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,141,255,.16) 1px, transparent 1px);
  background-size: 100% 100%, 62px 62px, 62px 62px;
  -webkit-mask-image: radial-gradient(ellipse 85% 75% at 50% 42%, #000 15%, transparent 78%);
  mask-image: radial-gradient(ellipse 85% 75% at 50% 42%, #000 15%, transparent 78%);
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; z-index: -1;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  opacity: .45;
}
.hero h1 {
  background: linear-gradient(175deg, #ffffff 24%, #a9d4ff 68%, var(--accent-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: none; filter: drop-shadow(0 0 46px rgba(46,141,255,.38));
}
.eyebrow { box-shadow: 0 0 22px rgba(52,227,240,.16), inset 0 0 18px rgba(52,227,240,.06); }

/* key numbers: gradient text with a neon top line */
.stat { position: relative; }
.stat::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2)); opacity: .5;
}
.stat b {
  background: linear-gradient(180deg, #eaf3ff 10%, var(--accent) 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 20px rgba(46,141,255,.35));
}

/* HUD corners: panel-like cards only */
.chart-card, .loopcard, .head-card { position: relative; }
.chart-card::before, .loopcard::before, .head-card::before,
.chart-card::after, .loopcard::after, .head-card::after {
  content: ""; position: absolute; width: 16px; height: 16px; pointer-events: none; opacity: .7;
}
.chart-card::before, .loopcard::before, .head-card::before {
  left: -1px; top: -1px; border-left: 2px solid var(--accent-2); border-top: 2px solid var(--accent-2);
  border-radius: var(--radius) 0 0 0;
}
.chart-card::after, .loopcard::after, .head-card::after {
  right: -1px; bottom: -1px; border-right: 2px solid var(--accent-2); border-bottom: 2px solid var(--accent-2);
  border-radius: 0 0 var(--radius) 0;
}

/* nav bar: blue bottom glow once scrolled */
.nav.scrolled { box-shadow: 0 1px 0 rgba(46,141,255,.4), 0 10px 34px rgba(2,6,16,.6); }

/* primary button: a sweep of light on hover */
.btn-primary { position: relative; overflow: hidden; }
.btn-primary::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 45%; left: -60%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,.55), transparent);
  transform: skewX(-18deg);
}
.btn-primary:hover::after { animation: sheen .7s ease-out; }
@keyframes sheen { to { left: 115%; } }

/* dark sections: faint scan lines */
.section-alt { position: relative; }
.section-alt::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(46,141,255,.05) 0 1px, transparent 1px 4px);
  opacity: .5;
}
.section-alt > * { position: relative; }

/* comparison player and thumbnails: neon edge when selected or hovered */
.spot-wipe { box-shadow: 0 0 0 1px rgba(46,141,255,.28), 0 24px 60px rgba(2,8,24,.6); }
.spot-rail button[aria-selected="true"] { box-shadow: 0 0 0 1px var(--accent), 0 0 26px rgba(46,141,255,.3); }
.spot-rail button:hover { box-shadow: 0 0 18px rgba(46,141,255,.2); }

/* the end point of our line in the chart pulses */
.pulse-dot { animation: pulse 2.4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

@media (prefers-reduced-motion: reduce) {
  .btn-primary:hover::after { animation: none; }
  .pulse-dot { animation: none; }
}

/* site background: a faint grid under non-alt sections */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(46,141,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46,141,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* a short glowing bar under each section heading */
.section-head h2, .overview h2 { position: relative; padding-bottom: 16px; }
.section-head h2::after, .overview h2::after {
  content: ""; position: absolute; left: 0; bottom: 0; width: 74px; height: 3px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 18px rgba(52,227,240,.55);
}

/* comparison player: an animated neon border */
.spot-screen {
  position: relative; padding: 2px; border-radius: calc(var(--radius) + 2px);
  background: linear-gradient(115deg, var(--accent) 0%, var(--accent-2) 22%, rgba(46,141,255,.12) 48%, var(--accent) 78%, var(--accent-2) 100%);
  background-size: 260% 100%; animation: flow 9s linear infinite;
}
@keyframes flow { to { background-position: 260% 0; } }
.spot-screen .spot-wipe { border-radius: var(--radius); box-shadow: none; }

/* our rows in the main table: a bright left edge */
.table-main tr.ours th[scope="row"] { box-shadow: inset 3px 0 0 var(--accent); }

@media (prefers-reduced-motion: reduce) { .spot-screen { animation: none; } }