/* Ковчег — технологический радар.
   Намеренно отдельная айдентика (не блог): прохладный «приборный» вид,
   индиго-акцент, моно-акценты, цветные кольца. Без serif, без общих с блогом стилей. */

:root {
  --bg:        #0f1115;   /* deep ink canvas */
  --panel:     #161a22;   /* cards / panels */
  --panel-2:   #1c212b;   /* nested surfaces */
  --fg:        #e7eaf0;   /* primary text */
  --muted:     #9aa3b2;   /* secondary text */
  --faint:     #6b7382;   /* tertiary */
  --line:      #262c38;   /* hairlines */
  --accent:    #7c8cff;   /* indigo signal */
  --accent-dim:#7c8cff22;

  /* ring colors */
  --adopt:  #4ade80;   /* green */
  --trial:  #60a5fa;   /* blue */
  --assess: #fbbf24;   /* amber */
  --hold:   #f87171;   /* red */

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --measure: 1040px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 80% -10%, #1a2030 0%, transparent 60%),
    var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 1.5rem; }

/* Header --------------------------------------------------------------- */
.topbar {
  border-bottom: 1px solid var(--line);
  background: #0f1115cc;
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-top: 0.9rem; padding-bottom: 0.9rem;
}
.brand {
  display: flex; align-items: center; gap: 0.6rem;
  font-weight: 700; font-size: 1.1rem; color: var(--fg); letter-spacing: 0.01em;
}
.brand:hover { text-decoration: none; }
.brand svg { display: block; }
.brand .sub { color: var(--faint); font-weight: 400; font-size: 0.82rem; font-family: var(--mono); }
.topnav { display: flex; gap: 1.4rem; font-size: 0.92rem; }
.topnav a { color: var(--muted); }
.topnav a:hover { color: var(--accent); text-decoration: none; }

/* Hero ----------------------------------------------------------------- */
.hero { padding: 3.2rem 0 1.6rem; }
.hero h1 {
  font-size: 2.4rem; line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 0.8rem;
}
.hero .tagline { color: var(--accent); font-family: var(--mono); font-size: 0.95rem; margin: 0 0 1.2rem; }
.hero p { color: var(--muted); max-width: 70ch; margin: 0 0 0.8rem; font-size: 1.05rem; }

/* Ring legend ---------------------------------------------------------- */
.rings {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.8rem;
  margin: 1.8rem 0 2.4rem;
}
.ring-def {
  border: 1px solid var(--line); border-radius: 10px; background: var(--panel);
  padding: 0.9rem 1rem;
}
.ring-def .name {
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--mono); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}
.ring-def .name::before {
  content: ""; width: 0.7rem; height: 0.7rem; border-radius: 50%; flex: none;
}
.ring-def.adopt  .name::before { background: var(--adopt); }
.ring-def.trial  .name::before { background: var(--trial); }
.ring-def.assess .name::before { background: var(--assess); }
.ring-def.hold   .name::before { background: var(--hold); }
.ring-def p { margin: 0; font-size: 0.86rem; color: var(--muted); line-height: 1.45; }

/* Radar SVG ------------------------------------------------------------ */
.radar-figure { margin: 0 0 2.6rem; text-align: center; }
.radar-figure svg { max-width: 520px; width: 100%; height: auto; }
.radar-figure figcaption { color: var(--faint); font-size: 0.82rem; font-family: var(--mono); margin-top: 0.6rem; }

/* Quadrants ------------------------------------------------------------ */
.quadrants { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-bottom: 3rem; }
.quadrant {
  border: 1px solid var(--line); border-radius: 12px; background: var(--panel);
  padding: 1.3rem 1.4rem 1.5rem;
}
.quadrant > h2 {
  font-size: 1.15rem; margin: 0 0 0.2rem; letter-spacing: -0.01em;
  display: flex; align-items: center; gap: 0.5rem;
}
.quadrant > .q-sub { color: var(--faint); font-size: 0.82rem; font-family: var(--mono); margin: 0 0 1rem; }

.blip {
  border-top: 1px solid var(--line); padding: 0.85rem 0 0.2rem;
}
.blip:first-of-type { border-top: none; }
.blip .head { display: flex; align-items: baseline; gap: 0.6rem; }
.blip .ring {
  font-family: var(--mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.07em;
  padding: 0.12rem 0.45rem; border-radius: 999px; flex: none; border: 1px solid transparent;
}
.blip .ring.adopt  { color: var(--adopt);  background: #4ade8015; border-color: #4ade8044; }
.blip .ring.trial  { color: var(--trial);  background: #60a5fa15; border-color: #60a5fa44; }
.blip .ring.assess { color: var(--assess); background: #fbbf2415; border-color: #fbbf2444; }
.blip .ring.hold   { color: var(--hold);   background: #f8717115; border-color: #f8717144; }
.blip .name { font-weight: 600; font-size: 1rem; }
.blip .desc { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.9rem; line-height: 1.5; }
.blip .why  { margin: 0.3rem 0 0; color: var(--faint); font-size: 0.84rem; line-height: 1.45; }
.blip .why b { color: var(--muted); font-weight: 600; }

/* Methodology / prose -------------------------------------------------- */
.prose { max-width: 72ch; }
.prose h2 { font-size: 1.3rem; margin: 2.4rem 0 0.8rem; }
.prose p { color: var(--muted); margin: 0 0 1rem; }
.section-label {
  font-family: var(--mono); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--faint); margin: 2.6rem 0 1rem;
}

/* Footer --------------------------------------------------------------- */
.foot {
  border-top: 1px solid var(--line); margin-top: 2rem;
  color: var(--faint); font-size: 0.84rem;
}
.foot .wrap { display: flex; justify-content: space-between; gap: 1rem; padding-top: 1.4rem; padding-bottom: 2.4rem; }
.foot a { color: var(--muted); }
.foot .mono { font-family: var(--mono); }

/* 404 ------------------------------------------------------------------ */
.notice { text-align: center; padding: 5rem 0; }
.notice .code { font-family: var(--mono); font-size: 4rem; color: var(--accent); line-height: 1; }
.notice h1 { font-size: 1.4rem; margin: 0.6rem 0 0.6rem; }
.notice p { color: var(--muted); }

/* Mobile --------------------------------------------------------------- */
@media (max-width: 860px) {
  .quadrants { grid-template-columns: 1fr; }
  .rings { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 1.9rem; }
  .topbar .wrap { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
  .rings { grid-template-columns: 1fr; }
}