/* Physical AI Radar: the Pages site. Hand-written, no build step, shared by the
   landing pages (pairadar/site.py), the Jekyll layout for the daily and weekly
   pages (_layouts/default.html) and the social card. */
:root {
  --bg: #05070d;
  --surface: #0b1120;
  --surface-2: #10182b;
  --line: rgba(148, 163, 184, .16);
  --ink: #e6edf3;
  --muted: #8b98ad;
  --green: #34d399;
  --violet: #8b5cf6;
  --ev-O: #34d399;
  --ev-R: #60a5fa;
  --ev-M: #fbbf24;
  --radius: 16px;
  /* Latin faces first, so an English title keeps its own apostrophes and spaces;
     each glyph a Latin face lacks falls through to the CJK faces, in the page's
     language order (see :lang(ja) below). */
  --latin: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
           Arial, "Noto Sans";
  --sans: var(--latin), "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Source Han Sans SC",
          "Microsoft YaHei", "Hiragino Sans", "Noto Sans CJK JP", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}
:lang(ja) {
  --sans: var(--latin), "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans CJK JP", "Source Han Sans JP",
          "Yu Gothic UI", Meiryo, "Noto Sans CJK SC", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(139, 92, 246, .18), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(52, 211, 153, .10), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--ink);
  font: 16px/1.6 var(--sans);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 163, 184, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, .045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 70%);
  z-index: -1;
}
a { color: #a5b4fc; text-decoration: none; }
:focus-visible { outline: 2px solid #a5b4fc; outline-offset: 2px; border-radius: 6px; }
::selection { background: rgba(139, 92, 246, .45); color: #fff; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 20; padding: 8px 14px; border-radius: 8px; background: var(--violet); color: #fff; }
.skip:focus { top: 12px; }
[hidden] { display: none !important; }
a:hover { color: #c7d2fe; text-decoration: underline; }

/* navigation */
nav.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px clamp(16px, 4vw, 48px);
  background: rgba(5, 7, 13, .72);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
nav.top .brand { min-width: 0; display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; }
nav.top .brand:hover { text-decoration: none; }
nav.top .links { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
nav.top .links a { color: var(--muted); }
nav.top .links a:hover { color: var(--ink); text-decoration: none; }
nav.top .switch { flex-shrink: 0; white-space: nowrap; display: flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
nav.top .switch a { padding: 3px 10px; color: var(--muted); }
nav.top .switch a[aria-current] { background: var(--surface-2); color: var(--ink); }
nav.top .switch a:hover { text-decoration: none; color: var(--ink); }

/* hero */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(32px, 6vw, 80px) clamp(16px, 4vw, 48px) 24px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 5px 14px;
  border: 1px solid rgba(52, 211, 153, .35);
  border-radius: 999px;
  background: rgba(52, 211, 153, .08);
  color: var(--green);
  font: 600 13px/1.4 var(--mono);
  letter-spacing: .02em;
}
.live {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, .7);
  animation: ping 2s infinite;
}
@keyframes ping { 70% { box-shadow: 0 0 0 10px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.1;
  padding-bottom: .08em;
  letter-spacing: -.025em;
  background: linear-gradient(100deg, #fff 20%, #c4b5fd 55%, #6ee7b7 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .tagline { margin: 0 0 28px; color: var(--muted); font-size: clamp(16px, 1.6vw, 19px); max-width: 38em; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 32px; }
.button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
  font: 600 14px/1.2 var(--sans);
  cursor: pointer;
  transition: border-color .15s, transform .15s, background .15s;
}
.button:hover { border-color: rgba(165, 180, 252, .5); transform: translateY(-1px); text-decoration: none; color: var(--ink); }
.button.primary { background: linear-gradient(135deg, #7c3aed, #4f46e5); border-color: transparent; box-shadow: 0 8px 30px rgba(124, 58, 237, .35); }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--line); }
.stats div { padding: 14px 16px; background: var(--surface); }
.stats dt { color: var(--muted); font-size: 12px; }
.stats dd { margin: 2px 0 0; font: 700 26px/1.2 var(--mono); letter-spacing: -.02em; }

/* the radar */
.scope { margin: 0; text-align: center; }
.scope figcaption { color: var(--muted); font-size: 13px; margin-top: 6px; }
svg.radar { width: 100%; height: auto; overflow: visible; font: 14px var(--sans); }
.lane-legend { display: none; }
svg.radar .ring { fill: none; stroke: rgba(52, 211, 153, .18); }
svg.radar .rim { stroke: rgba(52, 211, 153, .35); }
svg.radar .spoke { stroke: rgba(148, 163, 184, .14); }
svg.radar .area { fill: rgba(139, 92, 246, .22); stroke: #a78bfa; stroke-width: 1.5; stroke-linejoin: round; }
svg.radar .beam { stroke: rgba(52, 211, 153, .8); stroke-width: 1.5; }
svg.radar .label { font-weight: 600; }
svg.radar .label .count { fill: var(--muted); font-family: var(--mono); font-weight: 400; }
svg.radar .core { fill: var(--green); }
svg.radar .blip circle { fill: var(--lane); }
svg.radar .blip .halo { fill: var(--lane); opacity: 0; transform-box: fill-box; transform-origin: center; animation: blip 3.2s var(--delay) infinite; }
svg.radar .blip:hover circle:not(.halo) { stroke: #fff; stroke-width: 2; }
@keyframes blip { 0% { opacity: .55; transform: scale(.4); } 60%, 100% { opacity: 0; transform: scale(1.6); } }

/* sections */
main { max-width: 1240px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px) 48px; }
main h2 { margin: 48px 0 6px; font-size: 24px; letter-spacing: -.01em; }
.legend { margin: 0 0 20px; color: var(--muted); font-size: 13px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }

/* a pick */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  scroll-margin-top: 80px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card::before { content: ""; position: absolute; inset: 0 0 auto; height: 3px; border-radius: var(--radius) var(--radius) 0 0; background: var(--lane); opacity: .9; }
.card:hover { border-color: color-mix(in srgb, var(--lane) 55%, transparent); transform: translateY(-2px); box-shadow: 0 16px 40px rgba(0, 0, 0, .35); }
.card:target { border-color: var(--lane); box-shadow: 0 0 0 3px color-mix(in srgb, var(--lane) 35%, transparent); }
.card .meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12px; }
.card .rank { font: 700 13px var(--mono); color: var(--muted); }
.card .lane { flex: 1 1 0; min-width: 0; color: var(--lane); font-weight: 600; }
.ev { flex-shrink: 0; margin-left: auto; padding: 2px 8px; border-radius: 6px; font: 600 11px/1.5 var(--mono); border: 1px solid currentColor; }
.ev-O { color: var(--ev-O); } .ev-R { color: var(--ev-R); } .ev-M { color: var(--ev-M); }
.card h3 { margin: 0; font-size: 18px; line-height: 1.35; letter-spacing: -.01em; }
.card h3 a { color: var(--ink); }
.card h3 a:hover { color: #fff; }
.figure { display: flex; align-items: baseline; gap: 10px; margin: 2px 0 0; }
.figure strong { font: 800 30px/1 var(--mono); letter-spacing: -.03em; color: var(--lane); white-space: nowrap; }
.figure .context { color: var(--muted); font-size: 13px; line-height: 1.4; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.chip { padding: 1px 8px; border-radius: 6px; background: rgba(148, 163, 184, .1); font: 600 12px/1.6 var(--mono); }
.why { margin: 0; font-size: 14.5px; color: #cbd5e1; }
.draft { padding: 1px 6px; border-radius: 4px; background: rgba(251, 191, 36, .15); color: var(--ev-M); font-size: 11px; font-weight: 700; }
.excerpt { margin: 0; color: var(--muted); font-size: 13px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; border-left: 2px solid var(--line); padding-left: 10px; }
.signals { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.signals li { padding: 1px 8px; border: 1px dashed var(--line); border-radius: 999px; color: var(--muted); font-size: 11.5px; }
.card footer { display: flex; align-items: center; gap: 10px; margin-top: auto; padding-top: 10px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--muted); }
.card .source { min-width: 0; }
.card .actions { flex-shrink: 0; margin-left: auto; display: flex; gap: 6px; white-space: nowrap; }
.card .actions button, .card .actions a { padding: 3px 10px; border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--muted); font: 600 12px var(--sans); cursor: pointer; }
.card .actions button:hover, .card .actions a:hover { color: var(--ink); border-color: rgba(165, 180, 252, .5); text-decoration: none; }

/* filters and the day's share tools */
.toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 18px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-filter { --lane: var(--ink); padding: 5px 12px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--muted); font: 600 13px/1.3 var(--sans); cursor: pointer; transition: color .15s, border-color .15s, background .15s; }
.chip-filter b { margin-left: 2px; font: 600 12px var(--mono); opacity: .7; }
.chip-filter:hover { color: var(--ink); border-color: color-mix(in srgb, var(--lane) 50%, transparent); }
.chip-filter[aria-pressed="true"] { color: var(--lane); border-color: var(--lane); background: color-mix(in srgb, var(--lane) 12%, transparent); }
.tools { display: flex; flex-wrap: wrap; gap: 8px; margin-left: auto; }
.tools .button { padding: 8px 14px; font-size: 13px; }

/* the poster, drawn in the reader's browser */
.poster-dialog { width: min(92vw, 520px); max-height: 94vh; padding: 16px 18px 18px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); color: var(--ink); box-shadow: 0 30px 80px rgba(0, 0, 0, .6); }
.poster-dialog::backdrop { background: rgba(2, 4, 10, .72); backdrop-filter: blur(6px); }
.poster-dialog[open] { animation: rise .22s ease-out; }
.poster-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.poster-head h2 { margin: 0; font-size: 16px; }
.poster-dialog .close { width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%; background: transparent; color: var(--muted); font-size: 20px; line-height: 1; cursor: pointer; }
.poster-dialog .close:hover { color: var(--ink); }
.poster-dialog img { display: block; width: 100%; height: auto; max-height: 64vh; object-fit: contain; border-radius: 12px; background: var(--bg); }
.poster-dialog .hint { margin: 10px 0; color: var(--muted); font-size: 13px; }
.poster-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
@keyframes rise { from { opacity: 0; transform: translateY(12px) scale(.98); } }

/* cards and panels arrive as they scroll in; without the script they are simply there */
.reveal .grid .card, .reveal .trend > div { opacity: 0; transform: translateY(14px); transition: opacity .5s ease-out calc(var(--i, 0) * 70ms), transform .5s ease-out calc(var(--i, 0) * 70ms), border-color .2s, box-shadow .2s; }
.reveal .grid .card.in, .reveal .trend > div.in { opacity: 1; transform: none; }
.reveal .grid .card.in:hover { transform: translateY(-2px); }

/* trend */
.trend { display: grid; grid-template-columns: 1.5fr 1.2fr minmax(220px, .8fr); gap: 16px; }
.scan { display: flex; flex-direction: column; }
.scan svg.qr { width: 116px; height: 116px; border-radius: 10px; }
.scan p { margin: 12px 0 0; color: var(--muted); font-size: 13px; }
.trend > div { padding: 4px 24px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.trend h2 { margin: 20px 0 16px; font-size: 16px; }
svg.cadence { width: 100%; height: auto; font: 12px var(--mono); }
svg.cadence rect { fill: var(--violet); opacity: .8; }
svg.cadence g:last-of-type rect { fill: var(--green); opacity: 1; }
svg.cadence text { text-anchor: middle; }
svg.cadence .n { fill: var(--ink); font-weight: 700; }
svg.cadence .d { fill: var(--muted); font-size: 11px; }
.mix { display: flex; height: 14px; border-radius: 999px; overflow: hidden; background: rgba(148, 163, 184, .1); }
.mix span.ev-O { background: var(--ev-O); } .mix span.ev-R { background: var(--ev-R); } .mix span.ev-M { background: var(--ev-M); }
.mix-legend { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 18px 0 0; padding: 0; list-style: none; }
.mix-legend li { display: flex; flex-direction: column; gap: 2px; }
.mix-legend b { font: 800 28px/1.1 var(--mono); letter-spacing: -.02em; }
.mix-legend span { color: var(--muted); font-size: 12.5px; }
.legend b { font-family: var(--mono); }

.foot a { color: var(--muted); text-decoration: underline; text-decoration-color: var(--line); }
.foot { max-width: 1240px; margin: 0 auto; padding: 24px clamp(16px, 4vw, 48px) 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }

/* the daily, weekly and archive pages rendered by Jekyll */
.doc main.prose { max-width: 860px; padding-top: 32px; }
.progress { display: none; }
@supports (animation-timeline: scroll()) {
  .progress { display: block; position: fixed; inset: 0 0 auto; z-index: 11; height: 3px; transform-origin: 0 50%; background: linear-gradient(90deg, var(--violet), var(--green)); animation: progress linear both; animation-timeline: scroll(root); }
  @keyframes progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }
}
.sharebar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; max-width: 860px; margin: 8px auto 40px; padding: 16px clamp(16px, 4vw, 48px); }
.sharebar span { margin-right: 4px; color: var(--muted); font-size: 13px; }
.sharebar .button { padding: 7px 14px; font-size: 13px; }
.prose h3 { scroll-margin-top: 72px; }
.prose h3 + ul { margin-top: 4px; }
.prose h1 { font-size: clamp(28px, 4vw, 40px); letter-spacing: -.02em; line-height: 1.15; margin: 8px 0 16px; }
.prose h2 { font-size: 22px; padding-top: 12px; border-top: 1px solid var(--line); }
.prose h3 { font-size: 18px; margin: 32px 0 8px; line-height: 1.4; }
.prose ul { padding-left: 1.2em; }
.prose li { margin: 4px 0; }
.prose li::marker { color: var(--muted); }
.prose code { padding: 1px 6px; border-radius: 6px; background: rgba(148, 163, 184, .12); font: .86em var(--mono); color: #e2e8f0; }
.prose pre { padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: auto; }
.prose pre code { padding: 0; background: none; }
.prose blockquote { margin: 12px 0; padding: 4px 16px; border-left: 3px solid var(--violet); background: rgba(139, 92, 246, .06); border-radius: 0 10px 10px 0; color: #cbd5e1; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.prose th { color: var(--muted); font-weight: 600; }
.prose img { max-width: 100%; height: auto; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }

/* the social card, photographed at 1200×630 */
body.og { width: 1200px; height: 630px; overflow: hidden; }
body.og::before { mask-image: none; }
.og-card { display: grid; grid-template-columns: 620px 1fr; align-items: center; gap: 24px; height: 630px; padding: 0 48px 0 72px; }
.og-card h1 { margin: 0 0 20px; padding-bottom: .08em; font-size: 54px; line-height: 1.12; letter-spacing: -.02em; background: linear-gradient(100deg, #fff 20%, #c4b5fd 60%, #6ee7b7 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.og-card .eyebrow { font-size: 18px; }
.og-card .tagline { margin: 0 0 36px; color: var(--muted); font-size: 24px; }
.og-url { margin: 0; font: 600 20px var(--mono); color: var(--green); }
.og-card svg.radar { width: 470px; justify-self: center; }

@media (min-width: 1100px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid .card:first-child { grid-column: span 2; }
  .grid .card:first-child h3 { font-size: 24px; }
  .grid .card:first-child .figure strong { font-size: 40px; }
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .scope { overflow: hidden; }
  svg.radar { width: 170%; margin: 0 -35%; }
  svg.radar .label { display: none; }
  .lane-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 14px; margin: 4px 0 0; padding: 0; list-style: none; font-size: 12.5px; }
  .lane-legend li { color: var(--lane); }
  .lane-legend b { color: var(--muted); font-family: var(--mono); font-weight: 400; }
  nav.top .brand span { font-size: 13px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trend { grid-template-columns: 1fr; }
  .scan { display: none; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .filters { flex-wrap: nowrap; overflow-x: auto; margin: 0 calc(-1 * clamp(16px, 4vw, 48px)); padding: 2px clamp(16px, 4vw, 48px); scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .chip-filter { flex-shrink: 0; }
  .tools { margin-left: 0; }
  .tools .button { flex: 1 1 0; justify-content: center; }
  nav.top .links { display: none; }
  nav.top .switch { margin-left: auto; }
}
@media (min-width: 901px) and (max-width: 1099px) {
  .trend { grid-template-columns: 1fr 1fr; }
  .scan { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before { animation: none !important; transition: none !important; }
  svg.radar .sweep { display: none; }
  .progress { display: none; }
}
@media print {
  body { background: #fff; color: #111; }
  body::before, nav.top, .toolbar, .cta, .scope, .trend, .sharebar, .progress, .card .actions { display: none !important; }
  .card, .trend > div { break-inside: avoid; background: #fff; border-color: #ccc; }
  .card h3 a, .prose, .prose h1 { color: #111; }
  .hero h1 { color: #111; background: none; }
}