/* ===========================================================
   ZININ×SHTURBIN — redesign tokens & base
   =========================================================== */

:root {
  /* Palette — pure white + ink + bold forest, no cream */
  --bg:        #ffffff;          /* paper-white */
  --bg-deep:   #ebebe7;          /* cool neutral, NOT cream */
  --bg-paper:  #f5f5f2;          /* faintest warm-neutral wash */
  --bg-ink:    #0c0e0c;          /* near-black panel bg */
  --fg:        #0a0a0a;
  --fg-soft:   #1f1f1d;
  --fg-mute:   #6a6a66;
  --hair:      #d6d6d0;
  --hair-soft: #e6e6e0;
  --green:     #2a7048;          /* punchy forest, sophisticated */
  --green-deep:#163b25;
  --green-soft:#e7f1ea;
  --signal:    #ff4d1f;          /* Flipper-ish signal orange */
  --tan:       #6a6a66;          /* repurposed: cool slate */
  --tan-deep:  #3a3a36;
  --red:       #c1311a;

  /* Type */
  --f-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --f-body:    "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --f-serif:   "Instrument Serif", "Times New Roman", serif;

  /* Density */
  --pad-section: clamp(56px, 6vw, 96px);
  --pad-edge:    clamp(20px, 3vw, 48px);
  --maxw:        1480px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  max-width: 100%;
}
body { overflow-x: clip; max-width: 100vw; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

::selection { background: var(--green); color: var(--bg); }

/* Utility */
.mono   { font-family: var(--f-mono); font-feature-settings: "ss01","cv02"; letter-spacing: -0.01em; }
.serif  { font-family: var(--f-serif); font-style: italic; font-weight: 400; }
.upper  { text-transform: uppercase; letter-spacing: 0.06em; }
.hair   { border: 0; border-top: 1px solid var(--fg); width: 100%; }
.hair-soft { border: 0; border-top: 1px solid var(--hair); width: 100%; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad-edge);
}

/* Coordinate label — used as a system identifier next to titles */
.coord {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-mute);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.coord::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  display: inline-block;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: transform 0.12s ease, background 0.2s, color 0.2s;
  cursor: pointer;
}
.btn:hover { background: var(--green); border-color: var(--green); }
.btn.ghost {
  background: transparent;
  color: var(--fg);
}
.btn.ghost:hover { background: var(--fg); color: var(--bg); }
.btn .arr { transition: transform 0.2s; }
.btn:hover .arr { transform: translateX(4px); }

/* Marquee */
.marquee {
  display: flex;
  overflow: hidden;
  width: 100%;
  border-top: 1px solid var(--fg);
  border-bottom: 1px solid var(--fg);
  padding: 14px 0;
  gap: 0;
}
.marquee-track {
  display: flex;
  flex-shrink: 0;
  gap: 48px;
  animation: marquee-scroll 60s linear infinite;
  padding-right: 48px;
  white-space: nowrap;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-family: var(--f-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
}
.marquee-item::after {
  content: "✦";
  color: var(--green);
  font-size: 10px;
}
@keyframes marquee-scroll {
  to { transform: translateX(-50%); }
}

/* Section heading style — number + title */
.s-num {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fg-mute);
  text-transform: uppercase;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.in { opacity: 1; transform: none; }

/* Cursor blink */
@keyframes blink { 50% { opacity: 0; } }
.caret {
  display: inline-block;
  width: 0.55em;
  height: 1em;
  background: currentColor;
  vertical-align: -0.12em;
  margin-left: 0.05em;
  animation: blink 1.05s steps(2) infinite;
}

/* Typing characters */
.shift-letter {
  display: inline-block;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), color 0.3s;
}

/* ---------- VARIANT SHELL TOPBAR ---------- */
.variant-bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  background: var(--bg);
  border-bottom: 1px solid var(--fg);
  padding: 8px var(--pad-edge);
  font-family: var(--f-mono);
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.vb-tabs {
  display: flex;
  gap: 4px;
  align-items: center;
}
.vb-tab {
  padding: 6px 10px;
  border: 1px solid var(--fg);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  display: inline-flex;
  gap: 8px;
  align-items: center;
}
.vb-tab[aria-selected="true"] {
  background: var(--fg);
  color: var(--bg);
}
.vb-tab .vb-dot { width: 6px; height: 6px; background: var(--green); border-radius: 50%; }
.vb-tab[aria-selected="true"] .vb-dot { background: var(--bg); }
.vb-meta { color: var(--fg-mute); display: flex; gap: 14px; align-items: center; }
.vb-meta .live { display: inline-flex; align-items: center; gap: 6px; }
.vb-meta .live::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--green) 20%, transparent);
  animation: pulse 1.6s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in oklab, var(--green) 30%, transparent); }
  50% { box-shadow: 0 0 0 6px transparent; }
}

main { padding-top: 38px; }

/* Page-wide grid lines (subtle backdrop in some variants) */
.gridlines {
  position: fixed; inset: 38px 0 0 0;
  pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(to right, var(--hair-soft) 1px, transparent 1px);
  background-size: 8.333% 100%;
  opacity: 0;
  transition: opacity 0.3s;
}
[data-show-grid="true"] .gridlines { opacity: 0.7; }

/* ===========================================================
   Wordmark — typographic brand mark
   =========================================================== */
.wm {
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.16em;
  line-height: 1;
}
.wm .wm-x {
  color: var(--green);
  font-weight: 400;
  font-size: 0.92em;
  transform: translateY(-0.04em);
  display: inline-block;
}
.wm .wm-x::before { content: ""; }
.wm-line { display: inline-flex; align-items: baseline; gap: 0.16em; }
.wm-sub {
  font-family: var(--f-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--fg-mute);
  letter-spacing: 0;
}

/* Inline size — used in topbar and small spots */
.wm-inline { font-size: 14px; }
/* Compact monogram */
.wm-compact { font-size: 16px; letter-spacing: -0.05em; gap: 0.05em; }
.wm-compact .wm-x { font-size: 1em; transform: none; }
/* Stacked — name above sub */
.wm-stacked { flex-direction: column; align-items: flex-start; gap: 0.1em; font-size: 28px; }
.wm-stacked .wm-sub { font-size: 14px; }
/* Huge — footer hero */
.wm-huge {
  flex-direction: column;
  align-items: flex-start;
  gap: 0.05em;
  font-size: clamp(40px, 7vw, 96px);
  font-weight: 700;
  letter-spacing: -0.04em;
}
.wm-huge .wm-line { line-height: 0.95; }
.wm-huge .wm-x { font-size: 0.85em; }
.wm-huge .wm-sub {
  font-size: 0.22em;
  letter-spacing: 0.01em;
  color: var(--fg-mute);
}

/* ===========================================================
   Mobile pass — universal rules
   =========================================================== */
@media (max-width: 760px) {
  :root {
    --pad-edge: 16px;
    --pad-section: 56px;
  }

  /* Topbar — compress strongly */
  .variant-bar {
    padding: 6px 10px;
    gap: 6px;
    font-size: 10px;
    flex-wrap: nowrap;
  }
  .variant-bar > div:first-child > span { display: none; } /* hide version */
  .variant-bar .vb-meta { display: none; }
  .vb-tabs { gap: 2px; flex-shrink: 0; }
  .vb-tab { padding: 5px 7px; font-size: 10px; gap: 4px; }
  .vb-tab > span:nth-child(3),
  .vb-tab > span:nth-child(4) { display: none; } /* hide "редакционно" */
  .wm-inline { font-size: 12px; }
  main { padding-top: 0; }

  .gridlines { display: none; }

  /* Marquee — smaller text everywhere */
  .marquee-item { font-size: 12px !important; }
  .marquee { padding: 10px 0 !important; }

  /* === EDITORIAL === */
  .v-edit .hero-grid { grid-template-columns: 1fr !important; gap: 24px !important; }
  .v-edit .hero-side { border-left: 0; border-top: 1px solid var(--fg); padding: 24px 0 0; }
  .v-edit .hero-eyebrow-wrap { flex-wrap: wrap; gap: 12px; padding: 10px; }
  .v-edit h1.hero-h { font-size: clamp(34px, 9vw, 56px) !important; }
  .v-edit .sec-head { grid-template-columns: 1fr; gap: 12px; margin-bottom: 32px; }
  .v-edit .sec-num { position: static; }
  .v-edit h2 { font-size: clamp(28px, 7vw, 40px); }
  .v-edit .promise-grid { grid-template-columns: 1fr; }
  .v-edit .promise-col { border-right: 0; border-bottom: 1px solid var(--fg); }
  .v-edit .promise-col:last-child { border-bottom: 0; }
  .v-edit .approach-block .ap-row { grid-template-columns: 60px 1fr; gap: 16px; padding: 24px 0; }
  .v-edit .approach-block .ap-body { grid-template-columns: 1fr; gap: 10px; }
  .v-edit .approach-block .ap-num { font-size: clamp(36px, 8vw, 52px); }
  .v-edit .approach-block .ap-tag { font-size: 18px !important; }
  .v-edit .approach-block .ap-row:nth-child(odd) .ap-tag { font-size: 22px !important; }
  .v-edit .stack-author { grid-template-columns: 1fr; gap: 16px; padding: 24px 0; }
  .v-edit .stack-list { grid-template-columns: 1fr; }
  .v-edit .stack-item:nth-child(2n) { border-right: 1px solid var(--hair); }
  .v-edit .stack-item { border-right: 0 !important; }
  .v-edit .alts { grid-template-columns: 1fr; }
  .v-edit .alt { border-right: 0; border-bottom: 1px solid var(--fg); padding: 24px 16px; }
  .v-edit .alt:last-child { border-bottom: 0; }
  .v-edit .process-row { grid-template-columns: 50px 1fr; gap: 16px; padding: 24px 0; }
  .v-edit .process-row > .pr-desc { grid-column: 2; }
  .v-edit .pr-num { font-size: clamp(36px, 9vw, 56px); }
  .v-edit .pr-title { font-size: 20px; }
  .v-edit .programs { grid-template-columns: 1fr; }
  .v-edit .prog { border-right: 0; border-bottom: 1px solid var(--fg); padding: 24px 16px; }
  .v-edit .fit-grid { grid-template-columns: 1fr; }
  .v-edit .fit-col { border-right: 0; border-bottom: 1px solid var(--fg); padding: 24px 16px; }
  .v-edit .fit-col:last-child { border-bottom: 0; }
  .v-edit .duo { grid-template-columns: 1fr; }
  .v-edit .duo-card { grid-template-columns: 100px 1fr; border-right: 0; border-bottom: 1px solid var(--fg); padding: 20px 16px; gap: 16px; }
  .v-edit .duo-card:last-child { border-bottom: 0; }
  .v-edit .duo-name { font-size: 22px; }
  .v-edit .cta { grid-template-columns: 1fr; gap: 32px; padding: 56px 16px; }
  .v-edit .cta-headline { font-size: clamp(28px, 7vw, 44px); }
  .v-edit .faq-q { grid-template-columns: 32px 1fr 24px; gap: 12px; }
  .v-edit .faq-text { font-size: 17px; }
  .v-edit .faq-a { grid-template-columns: 32px 1fr 24px; gap: 12px; }
  .v-edit footer { padding: 20px 16px; flex-direction: column; align-items: flex-start; gap: 12px; }

  /* === TERMINAL === */
  .v-term .status { padding: 6px 12px; font-size: 10px; gap: 8px; }
  .v-term .status .grp { gap: 8px; flex-wrap: wrap; }
  .v-term .hero { padding: 32px 0; }
  .v-term .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .v-term h1.hero-h { font-size: clamp(22px, 6vw, 36px) !important; }
  .v-term .hero-side { font-size: 11px; padding: 16px; }
  .v-term .hero-side .line { grid-template-columns: 110px 1fr; gap: 8px; }
  .v-term .sec { padding: 40px 0; }
  .v-term .sec-title { font-size: clamp(20px, 5vw, 32px); margin-bottom: 24px; }
  .v-term .promise { grid-template-columns: 1fr; gap: 16px; }
  .v-term .stack-row { grid-template-columns: 32px 1fr 32px; gap: 8px; padding: 12px 0; }
  .v-term .alts-table { font-size: 12px; }
  .v-term .alts-table th, .v-term .alts-table td { padding: 12px 10px; }
  .v-term .proc-line { grid-template-columns: 1fr; gap: 6px; padding: 16px 0; }
  .v-term .progs { grid-template-columns: 1fr; }
  .v-term .duo { grid-template-columns: 1fr; }
  .v-term .duo-body { grid-template-columns: 90px 1fr; gap: 14px; padding: 16px; }
  .v-term .fit-row { grid-template-columns: 50px 1fr; gap: 12px; padding: 10px 12px; }
  .v-term .faq-q { grid-template-columns: 30px 1fr 24px; gap: 8px; font-size: 14px; }
  .v-term .cta-grid { grid-template-columns: 1fr; gap: 24px; }
  .v-term .cta-h { font-size: clamp(22px, 6vw, 36px); }
  .v-term footer { padding: 16px; flex-direction: column; align-items: flex-start; gap: 8px; }
  .v-term .ap-row { grid-template-columns: 1fr; gap: 6px; padding: 18px 16px; }

  /* === DISPLAY === */
  .v-disp .hero { padding: 32px 0 0; }
  .v-disp .hero-top { grid-template-columns: 1fr; gap: 16px; padding: 0 16px; }
  .v-disp .hero-eyebrow-wrap { padding: 8px 14px 8px 8px; gap: 12px; flex-wrap: wrap; }
  .v-disp .hero-eyebrow-wrap image-slot { width: 80px !important; height: 80px !important; }
  .v-disp .hero-meta-strip { flex-wrap: wrap; font-size: 10px; gap: 12px; }
  .v-disp h1.hero-h {
    font-size: clamp(40px, 14vw, 72px) !important;
    padding: 0 16px;
  }
  .v-disp h1.hero-h .line2 { padding-left: 0 !important; }
  .v-disp .hero-bottom { grid-template-columns: 1fr; gap: 24px; padding: 24px 16px; }
  .v-disp .disp-btn { padding: 14px 18px; font-size: 11px; }
  .v-disp .sec { padding: 56px 0; }
  .v-disp .sec-tag { padding: 0 16px; margin-bottom: 20px; }
  .v-disp h2.sec-h { font-size: clamp(28px, 9vw, 56px); padding: 0 16px; margin-bottom: 32px; }
  .v-disp .approach .ap-row { grid-template-columns: 1fr; gap: 12px; padding: 24px 0; }
  .v-disp .approach .ap-num { font-size: clamp(36px, 12vw, 72px); }
  .v-disp .ap-tag { font-size: clamp(18px, 5vw, 24px); }
  .v-disp .promise-grid { grid-template-columns: 1fr; padding: 0 16px; }
  .v-disp .promise-col.no { border-right: 0; border-bottom: 2px solid var(--fg); }
  .v-disp .stack-grid { grid-template-columns: 1fr; }
  .v-disp .stack-tile { min-height: 0; border-right: 0; padding: 18px; }
  .v-disp .alts { grid-template-columns: 1fr; padding: 0 16px; gap: 12px; }
  .v-disp .alt { padding: 20px 18px; }
  .v-disp .alt-num { font-size: 56px; }
  .v-disp .procs { padding: 0 16px; }
  .v-disp .proc { grid-template-columns: 1fr; gap: 12px; padding: 28px 0; }
  .v-disp .proc-num { font-size: clamp(56px, 18vw, 96px); }
  .v-disp .proc-title { font-size: 24px; }
  .v-disp .progs { grid-template-columns: 1fr; padding: 0 16px; gap: 12px; }
  .v-disp .prog { padding: 20px; }
  .v-disp .fit { grid-template-columns: 1fr; padding: 0 16px; }
  .v-disp .duo { grid-template-columns: 1fr; padding: 0 16px; }
  .v-disp .duo-card { grid-template-columns: 1fr; }
  .v-disp .duo-portrait { border-right: 0; border-bottom: 2px solid var(--fg); aspect-ratio: 16/9; }
  .v-disp .duo-name { font-size: 26px; }
  .v-disp .faq { padding: 0 16px; }
  .v-disp .faq-q { grid-template-columns: 40px 1fr 30px; gap: 12px; }
  .v-disp .faq-text { font-size: clamp(16px, 5vw, 22px); }
  .v-disp .faq-a-inner { grid-template-columns: 40px 1fr 30px; gap: 12px; }
  .v-disp .cta { grid-template-columns: 1fr; gap: 32px; padding: 56px 16px; }
  .v-disp .cta h2 { font-size: clamp(40px, 13vw, 72px); }
  .v-disp footer { padding: 24px 16px; flex-direction: column; align-items: flex-start; gap: 16px; }
  .v-disp footer .logo { font-size: clamp(28px, 11vw, 48px); }

  /* Provider grid */
  .providers .prov-list { grid-template-columns: 1fr 1fr; }

  /* Tripo prompts */
  .ap-text { font-size: 15px !important; }
}

/* Very small phones */
@media (max-width: 380px) {
  .variant-bar { padding: 6px 8px; }
  .vb-tab { padding: 4px 6px; font-size: 9px; }
  .providers .prov-list { grid-template-columns: 1fr; }
}