/* ----------------------------------------------------------------------------
   void — design tokens (lifted from the design system)
   ---------------------------------------------------------------------------- */

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100;
  font-display: swap;
  src: url("/static/fonts/JetBrainsMono-Thin.ttf") format("truetype");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url("/static/fonts/JetBrainsMono-Light.ttf") format("truetype");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/static/fonts/JetBrainsMono-Regular.ttf") format("truetype");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/static/fonts/JetBrainsMono-Medium.ttf") format("truetype");
}

:root {
  --bg-0: #0a0a0b;
  --bg-1: #101012;
  --bg-2: #16161a;

  --fg: #e6e6e8;
  --fg-2: #8a8a90;
  --fg-3: #4d4d54;
  --fg-4: #2a2a2f;

  --signal: #c8c8cc;
  --signal-warn: #b87a5a;
  --screen: #5faa7a;

  --font: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --w-light: 300;
  --w-reg: 400;
  --w-med: 500;

  --tracking: 0.02em;
  --tracking-wide: 0.18em;

  --t-12: 12px;
  --t-14: 14px;
  --t-16: 16px;
  --t-18: 18px;
  --t-heading: clamp(28px, 4vw, 56px);
  --t-display: clamp(48px, 9vw, 124px);

  --ease: cubic-bezier(0.2, 0.65, 0.2, 1); /* default — smooth out */
  --ease-in-out: cubic-bezier(0.45, 0, 0.35, 1); /* dramatic, for emphasis */
  --ease-soft: cubic-bezier(0.3, 0, 0.3, 1); /* gentle for pulses */
  --t-fast: 160ms var(--ease);
  --t-med: 380ms var(--ease);
  --t-slow: 800ms var(--ease);

  --radius: 2px;
  --radius-pill: 999px;

  /* the "island" max width — header, footer, hero, sections all align to it */
  --island: 1180px;
  --gutter: 32px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  background: var(--bg-0);
  color: var(--fg);
  font-family: var(--font);
  font-size: var(--t-14);
  font-weight: var(--w-reg);
  letter-spacing: var(--tracking);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* NB: don't set `scroll-behavior: smooth` here — it fights Lenis (each
   Lenis-driven scrollTo() triggers the browser's own smoothing, producing
   stutter and lag instead of the expected glide). Lenis owns scrolling.

   Скроллбар прячем НА ОБОИХ html и body: основной scrolling-host браузера —
   <html> (он же создаёт root scrollbar gutter), на body одного только
   ::-webkit-scrollbar { display:none } недостаточно — нативная полоса
   остаётся справа. Дублируем правила и на html. */
html {
  scroll-behavior: auto;
  scrollbar-width: none;       /* Firefox */
  -ms-overflow-style: none;    /* legacy Edge / IE */
}
html::-webkit-scrollbar {
  display: none;               /* Chrome / Safari / new Edge */
  width: 0;
  height: 0;
}
body {
  overflow-x: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
body::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(
    120% 80% at 50% 50%,
    transparent 55%,
    rgba(0, 0, 0, 0.55) 100%
  );
}

button,
input,
textarea {
  font-family: inherit;
  color: inherit;
  letter-spacing: inherit;
}

h1 {
  font-size: var(--t-heading);
  font-weight: var(--w-reg);
  letter-spacing: var(--tracking);
  line-height: 1.1;
  text-transform: lowercase;
}
h2 {
  font-size: var(--t-18);
  font-weight: var(--w-med);
  letter-spacing: var(--tracking);
  text-transform: lowercase;
}
p {
  font-size: var(--t-14);
  color: var(--fg);
  line-height: 1.6;
  text-wrap: pretty;
}

.eyebrow {
  color: var(--fg-3);
  font-size: var(--t-12);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.id {
  font-family: var(--font);
  font-weight: var(--w-med);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
}

/* primitives ---------------------------------------------------------------- */
.btn {
  height: 48px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--fg-4);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: var(--t-12);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition:
    border-color var(--t-fast),
    color var(--t-fast),
    background var(--t-fast),
    transform 380ms var(--ease);
}
.btn:hover {
  border-color: var(--fg-2);
  transform: translateY(-1px);
}
.btn:active {
  background: var(--bg-1);
  transform: translateY(0);
}
.btn.primary {
  background: var(--fg);
  color: var(--bg-0);
  border-color: var(--fg);
  position: relative;
}
.btn.primary::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: var(--radius);
  pointer-events: none;
  box-shadow: 0 0 0 rgba(255, 255, 255, 0);
  transition: box-shadow 480ms var(--ease);
}
.btn.primary:hover {
  background: #fff;
  border-color: #fff;
  transform: translateY(-2px);
}
.btn.primary:hover::before {
  box-shadow:
    0 0 16px rgba(255, 255, 255, 0.24),
    0 0 42px rgba(255, 255, 255, 0.14),
    0 0 90px rgba(255, 255, 255, 0.06);
}
.btn.primary:active {
  background: var(--fg);
  transform: translateY(0);
}
.btn.ghost {
  border-color: transparent;
  color: var(--fg-2);
}
.btn.ghost:hover {
  color: var(--fg);
}

/* Disabled state — для CTA, которые показывают будущую функциональность
   ("скачать · скоро"). pointer-events:none гарантирует, что href="#0" не
   сработает даже на тач-устройствах, где :active мог бы дать ложное эхо. */
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* arrow — proper SVG glyph that scales with currentColor */
.btn-arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--t-med);
}
.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--signal);
  box-shadow: 0 0 8px rgba(200, 200, 204, 0.45);
  display: inline-block;
}
.dot.warn {
  background: var(--signal-warn);
  box-shadow: 0 0 8px rgba(184, 122, 90, 0.45);
}
.dot.screen {
  background: var(--screen);
  box-shadow: 0 0 8px rgba(95, 170, 122, 0.45);
}

@keyframes void-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}
.dot.pulse {
  animation: void-pulse 1.6s var(--ease) infinite;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 22px;
  padding: 0 10px;
  border: 1px solid var(--fg-4);
  border-radius: var(--radius-pill);
  color: var(--fg-2);
  font-size: var(--t-12);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  white-space: nowrap;
}

/* ============================================================================
   void — landing
   layout: a fixed-width "island" with floating header & footer over the canvas
   ============================================================================ */

.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ----- the shell: every section content lines up to this width --------- */
.shell {
  max-width: var(--island);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
@media (max-width: 720px) {
  .shell {
    padding: 0 20px;
  }
  :root {
    --gutter: 20px;
  }
}
section {
  position: relative;
  z-index: 2;
}

/* ============================================================================
   intro — slower, more cinematic
   ============================================================================ */
.intro {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg-0);
  display: grid;
  place-items: center;
  transition: opacity 1200ms var(--ease);
}
.intro.fade-out {
  opacity: 0;
  pointer-events: none;
}

.intro-canvas {
  position: fixed;
  inset: 0;
  z-index: 101;
  pointer-events: none;
}

.intro-stage {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 102;
}

/* ----------------------------------------------------------------------------
   Intro: a soft glowing orb pinned dead-centre of the viewport. It spins,
   accelerates, throws off swirling particles as it charges up, then explodes
   in a supernova burst before flying up to become the header's logo dot.

   Centering: top:50%; left:50% + translate(-50%, -50%) puts the logo EXACTLY
   at viewport center at any browser zoom / Windows DPI scaling — no flex/grid
   gap math, no off-by-N pixels. JS preserves the centering during liftoff by
   using calc(-50% + Xpx) inside the transform.
   ---------------------------------------------------------------------------- */
.intro-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  transform-origin: 50% 50%;
  will-change: transform, opacity;
  opacity: 0;
  /* pixel-based translate (NOT translate(-50%, -50%)) so liftOff can smoothly
       interpolate to a pixel-based target transform — calc(-50% + Xpx) edge
       cases occasionally failed to animate in some browsers, leaving the orb
       frozen mid-intro. -100px = half of width (200/2). */
  transform: translate(-100px, -100px) scale(0.92);
  transition:
    transform 700ms var(--ease),
    opacity 600ms var(--ease);
}
.intro-logo.is-awake {
  opacity: 1;
  transform: translate(-100px, -100px) scale(1);
}

/* outer halo — wide soft bloom that intensifies as the spin accelerates.
   driven via CSS custom property so warming/charging classes can crank it
   without re-declaring the gradient. */
.orb-halo {
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(255, 255, 255, calc(0.18 * var(--intensity, 1))) 0%,
    rgba(255, 255, 255, calc(0.1 * var(--intensity, 1))) 24%,
    rgba(245, 245, 247, calc(0.04 * var(--intensity, 1))) 50%,
    rgba(0, 0, 0, 0) 72%
  );
  filter: blur(6px);
  pointer-events: none;
  z-index: 0;
  transition: inset 700ms var(--ease);
}

/* concentric ring frames — quiet structural background */
.orb-frame {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 1;
  transition: opacity 400ms var(--ease);
}
.orb-frame .orb-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(230, 230, 232, 0.14);
  transform-origin: 50% 50%;
  opacity: 0.75;
}
.orb-frame .r-2 {
  inset: 14%;
  opacity: 0.55;
}
.orb-frame .r-3 {
  inset: 28%;
  opacity: 0.35;
}

/* SPINNER — the rotating arc that VISUALLY READS the spin. Driven by JS rAF
   so we can smoothly ramp angular velocity via a physics model. A bright dot
   sits at the top edge so the rotation is unmistakable. */
.orb-spinner {
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  border: 1px solid transparent;
  border-top-color: rgba(255, 255, 255, 0.7);
  border-right-color: rgba(255, 255, 255, 0.22);
  transform-origin: 50% 50%;
  will-change: transform;
  z-index: 2;
  transition: opacity 400ms var(--ease);
}
.orb-spinner::before {
  content: "";
  position: absolute;
  top: -3.5px;
  left: 50%;
  width: 5px;
  height: 5px;
  background: #fff;
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow:
    0 0 6px rgba(255, 255, 255, 0.9),
    0 0 16px rgba(255, 255, 255, 0.45);
}

/* the core: bright, breathing white sphere */
.orb-core {
  position: absolute;
  inset: 40%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 45% 45%,
    #ffffff 0%,
    #ffffff 45%,
    #e0e0e4 80%,
    #b8b8c0 100%
  );
  box-shadow:
    0 0 10px rgba(255, 255, 255, 0.85),
    0 0 28px rgba(255, 255, 255, 0.42),
    0 0 70px rgba(245, 245, 247, 0.22);
  z-index: 3;
  transform-origin: 50% 50%;
  will-change: transform, box-shadow;
  transition:
    box-shadow 800ms var(--ease-in-out),
    transform 800ms var(--ease-in-out);
}

/* WARMING + CHARGING — modulate intensity smoothly as the rotor accelerates.
   Halo blooms, core brightens & swells. CSS-only escalation. */
.intro-logo.is-warming {
  --intensity: 1.6;
}
.intro-logo.is-warming .orb-core {
  box-shadow:
    0 0 16px rgba(255, 255, 255, 0.95),
    0 0 48px rgba(255, 255, 255, 0.6),
    0 0 120px rgba(245, 245, 247, 0.32);
}
.intro-logo.is-charging {
  --intensity: 2.6;
}
.intro-logo.is-charging .orb-core {
  box-shadow:
    0 0 24px rgba(255, 255, 255, 1),
    0 0 80px rgba(255, 255, 255, 0.75),
    0 0 200px rgba(245, 245, 247, 0.45),
    0 0 360px rgba(210, 210, 216, 0.28);
  transform: scale(1.08);
}
.intro-logo.is-bursting .orb-core {
  box-shadow:
    0 0 40px rgba(255, 255, 255, 1),
    0 0 140px rgba(255, 255, 255, 0.95),
    0 0 320px rgba(245, 245, 247, 0.65),
    0 0 600px rgba(210, 210, 216, 0.42);
  transform: scale(1.25);
  transition:
    box-shadow 260ms cubic-bezier(0.2, 0.9, 0.25, 1),
    transform 260ms cubic-bezier(0.2, 0.9, 0.25, 1);
}

/* lift-off: orb scales/translates to header slot; halo+frame+spinner dissolve
   so only the core remains. The JS-set inline transform uses pure pixel-based
   `translate(Xpx, Ypx) scale(s)` (no calc(), no percent mixing) so browsers
   smoothly interpolate the transition every time — earlier calc()-based form
   occasionally failed to animate in some browsers, freezing the intro. */
.intro-logo.is-flying {
  transition:
    transform 1400ms cubic-bezier(0.55, 0.05, 0.2, 1),
    opacity 1400ms cubic-bezier(0.55, 0.05, 0.2, 1);
}
.intro-logo.is-flying .orb-halo {
  opacity: 0;
  transition: opacity 500ms var(--ease);
}
.intro-logo.is-flying .orb-frame {
  opacity: 0;
  transition: opacity 500ms var(--ease);
}
.intro-logo.is-flying .orb-spinner {
  opacity: 0;
  transition: opacity 400ms var(--ease);
}
.intro-logo.is-flying .orb-core {
  box-shadow:
    0 0 4px rgba(255, 255, 255, 0.7),
    0 0 14px rgba(255, 255, 255, 0.35);
  transform: scale(1);
  transition:
    box-shadow 1000ms var(--ease),
    transform 1000ms var(--ease);
}

/* shared @keyframes used by .hero-vis-orbit (and historically by the intro
   orbit before it was migrated to JS rAF). Must live in the global CSS
   scope — was accidentally purged in an earlier intro rewrite. */
@keyframes orbit-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* page reveal */
.page {
  position: relative;
  z-index: 2;
  opacity: 0;
  transition: opacity 1200ms var(--ease);
}
.page.is-visible {
  opacity: 1;
}

/* ============================================================================
   header — floating island, logo centered
   ============================================================================ */
.header-wrap {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  padding: 18px var(--gutter) 0;
  pointer-events: none;
  /* keep header above the vignette overlay (z-index 1) */
}
.header-wrap > .header {
  pointer-events: auto;
}

.header {
  max-width: var(--island);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 56px;
  padding: 0 18px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 2px;
}

/* brand lockup: eclipse always visible, "void" text slides out to the RIGHT
   from behind the orb after intro lands, retracts on scroll, re-appears on
   hover. overflow:hidden clips the text so it visually emerges from the orb. */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
  /* hover target stays generous so the user can grab it even when collapsed */
  padding: 4px 6px;
  margin: -4px -6px;
}
.brand-logo-slot {
  position: relative;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  /* sits above the wordmark so the text appears to emerge from behind it */
  z-index: 2;
}
.brand-logo-slot .logo-eclipse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid rgba(230, 230, 232, 0.92);
  /* Opaque background + box-shadow combo: shadow's inward blur is hidden by
     the solid disc, while outward blur radiates freely with no clipping
     boundary. Many low-alpha layers at progressively larger radii give a
     smooth physical falloff that has no visible edge — the eye just sees
     light fading into the page. */
  background: var(--bg, #0a0a0b);
  box-shadow:
    0 0 6px   rgba(255, 255, 255, 0.10),
    0 0 14px  rgba(245, 245, 247, 0.07),
    0 0 28px  rgba(230, 230, 236, 0.05),
    0 0 52px  rgba(210, 210, 220, 0.035),
    0 0 90px  rgba(190, 190, 205, 0.022),
    0 0 140px rgba(170, 170, 190, 0.012);
  opacity: 0;
  transition: opacity 600ms var(--ease);
}
.brand-logo-slot.is-ready .logo-eclipse {
  opacity: 1;
  /* very slow, very subtle "breathing" — scale + glow swell drift in sync */
  animation: eclipse-breath 7200ms ease-in-out infinite;
}
@keyframes eclipse-breath {
  0%, 100% {
    transform: scale(1);
    box-shadow:
      0 0 6px   rgba(255, 255, 255, 0.08),
      0 0 14px  rgba(245, 245, 247, 0.055),
      0 0 28px  rgba(230, 230, 236, 0.04),
      0 0 52px  rgba(210, 210, 220, 0.028),
      0 0 90px  rgba(190, 190, 205, 0.018),
      0 0 140px rgba(170, 170, 190, 0.010);
  }
  50% {
    transform: scale(1.018);
    box-shadow:
      0 0 7px   rgba(255, 255, 255, 0.13),
      0 0 16px  rgba(245, 245, 247, 0.09),
      0 0 32px  rgba(230, 230, 236, 0.065),
      0 0 60px  rgba(210, 210, 220, 0.045),
      0 0 105px rgba(190, 190, 205, 0.028),
      0 0 160px rgba(170, 170, 190, 0.016);
  }
}
@media (prefers-reduced-motion: reduce) {
  .brand-logo-slot.is-ready .logo-eclipse { animation: none; }
}

/* "void" wordmark — collapsed by default (zero-width, clipped behind the orb).
   - .is-revealed: initial reveal after intro lands
   - .is-collapsed: retract on scroll (hover or .is-pinned overrides)
   - .is-pinned:   sticky-shown after a click, until page returns to top */
.brand-mark {
  display: inline-block;
  color: var(--fg);
  font-weight: var(--w-med);
  font-size: 15px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  white-space: nowrap;
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.9),
    0 0 12px rgba(255, 255, 255, 0.25),
    0 0 28px rgba(255, 255, 255, 0.12);
  /* collapsed: width 0, no left margin, slightly tucked left */
  max-width: 0;
  opacity: 0;
  margin-left: 0;
  transform: translateX(-10px);
  overflow: hidden;
  pointer-events: none;
  /* very long, deeply inertial easing — the text feels like it has real
     weight: slow lead-in, even slower trail-out. cubic-bezier(0.16, 1, 0.3, 1)
     is the "easeOutExpo+" variant — premium-feel deceleration. */
  transition:
    max-width 1500ms cubic-bezier(0.16, 1, 0.3, 1),
    opacity 1200ms cubic-bezier(0.16, 1, 0.3, 1) 80ms,
    margin-left 1500ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 1500ms cubic-bezier(0.16, 1, 0.3, 1);
}
.brand-lockup.is-revealed:not(.is-collapsed) .brand-mark,
.brand-lockup.is-revealed.is-pinned .brand-mark {
  max-width: 80px;
  opacity: 1;
  margin-left: 12px;
  transform: translateX(0);
}
/* hover-reveal only for real pointers — on touch, :hover sticks after a tap
   and the wordmark would stay open until the user taps elsewhere */
@media (hover: hover) and (pointer: fine) {
  .brand-lockup.is-revealed.is-collapsed:hover .brand-mark {
    max-width: 80px;
    opacity: 1;
    margin-left: 12px;
    transform: translateX(0);
  }
}

@media (max-width: 720px) {
  .header {
    padding: 0 12px;
  }
}

/* ============================================================================
   section header pattern
   ============================================================================ */
.sect {
  padding: 140px 0;
  position: relative;
}

@media (max-width: 720px) {
  .sect {
    padding: 88px 0;
  }
}

.sect-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--fg-4);
  margin-bottom: 32px;
}
.sect-head .num {
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  margin-bottom: 12px;
}
.sect-head h2 {
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: var(--w-reg);
  color: var(--fg);
  line-height: 1.2;
  text-transform: lowercase;
  max-width: 640px;
}
.sect-head .note {
  color: var(--fg-3);
  font-size: 12px;
  line-height: 1.6;
  max-width: 320px;
  text-align: right;
}

.sect-head.nobottom {
  border-bottom: none;
  margin-bottom: 0;
}

@media (max-width: 720px) {
  .sect-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .sect-head .note {
    text-align: left;
  }
}

/* ============================================================================
   hero
   ============================================================================ */
.hero {
  min-height: 100vh;
  display: grid;
  align-content: center;
  padding: 140px 0 96px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 450px;
  gap: 64px;
  align-items: center;
}
@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .hero-copy {
    display: contents;
  }
  .hero-eyebrow { order: 1; }
  .hero-display { order: 2; }
  .hero-vis     { order: 3; }
  .hero-tagline { order: 4; }
  .hero-promise { order: 5; }
  .hero-actions { order: 6; }
}
@media (max-width: 720px) {
  .hero {
    min-height: 100svh;
    padding: 100px 0 64px;
    align-content: start;
  }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  margin-bottom: 32px;
}
.hero-eyebrow .line {
  width: 32px;
  height: 1px;
  background: var(--fg-4);
}

.hero-display {
  font-family: var(--font);
  font-weight: var(--w-reg);
  font-size: var(--t-display);
  line-height: 0.95;
  letter-spacing: -0.01em;
  text-transform: lowercase;
  color: var(--fg);
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.6),
    0 0 24px rgba(255, 255, 255, 0.18),
    0 0 60px rgba(255, 255, 255, 0.08);
  margin-bottom: 28px;
}
.hero-display .accent {
  color: var(--fg-2);
  font-weight: var(--w-light);
}
.hero-display .h1-line {
  display: block;
  white-space: nowrap;
  /* JetBrains Mono — monospace, so the space glyph is the full em-width.
     At display size that's a chasm between words ("no    trace."). Pull
     it in with negative word-spacing to ~half a normal proportional space. */
  word-spacing: -0.35em;
}

.hero-tagline {
  color: var(--fg-2);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.55;
  max-width: 520px;
  margin-bottom: 14px;
}
.hero-promise {
  color: var(--fg-3);
  font-size: clamp(12.5px, 1.05vw, 13.5px);
  line-height: 1.6;
  max-width: 520px;
  font-style: italic;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.hero-actions .btn {
  height: 52px;
  padding: 0 28px;
}
@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    gap: 10px;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    height: 48px;
  }
}

/* ----- hero visualizer ----- */
.hero-vis {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 450px;
  margin-left: auto;
  align-self: start;
  margin-top: 24px;
  isolation: isolate;
}
@media (max-width: 880px) {
  .hero-vis {
    width: min(320px, 80vw);
    margin: 0 auto 40px;
  }
  .hero-eyebrow {
    margin-bottom: 6px;
  }
  .hero-display {
    margin-bottom: 32px;
  }
}
@media (max-width: 480px) {
  .hero-vis {
    width: min(260px, 70vw);
    margin: 0 auto 36px;
  }
}


/* soft halo behind the core — the "expensive" glow.
   tuned smaller to match the smaller core; inset positive so the halo
   sits inside the rings rather than spilling beyond the container. */
.hero-vis-halo {
  position: absolute;
  inset: 22%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 50% 50%,
    rgba(255, 255, 255, 0.18) 0%,
    rgba(255, 255, 255, 0.09) 22%,
    rgba(245, 245, 247, 0.04) 44%,
    rgba(0, 0, 0, 0) 70%
  );
  filter: blur(6px);
  pointer-events: none;
  z-index: 0;
  animation: hero-halo-breathe 6.5s cubic-bezier(0.4, 0, 0.4, 1) infinite;
  will-change: transform, opacity;
}
@keyframes hero-halo-breathe {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.06);
    opacity: 1;
  }
}

.hero-vis-frame {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  z-index: 1;
}
.hero-vis-frame .r {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--fg-4);
  transform-origin: 50% 50%;
  opacity: 0.7;
}
.hero-vis-frame .r-1 {
  animation: hero-pulse 5.6s cubic-bezier(0.3, 0, 0.3, 1) infinite;
}
.hero-vis-frame .r-2 {
  inset: 12%;
  opacity: 0.45;
  animation: hero-pulse 5.6s cubic-bezier(0.3, 0, 0.3, 1) infinite 1s;
}
.hero-vis-frame .r-3 {
  inset: 24%;
  opacity: 0.3;
  animation: hero-pulse 5.6s cubic-bezier(0.3, 0, 0.3, 1) infinite 2s;
}
.hero-vis-frame .r-4 {
  inset: 36%;
  opacity: 0.2;
}

@keyframes hero-pulse {
  0% {
    transform: scale(0.96);
    opacity: 0;
  }
  20% {
    opacity: 0.7;
  }
  100% {
    transform: scale(1.1);
    opacity: 0;
  }
}

/* the pulsing white core — heart of the visualizer.
   ~16% of the container, with a moderate soft glow that breathes. */
.hero-vis-core {
  position: absolute;
  inset: 42%;
  border-radius: 50%;
  background: radial-gradient(
    circle at 50% 50%,
    #ffffff 0%,
    #ffffff 38%,
    #e8e8ea 70%,
    #c8c8cc 100%
  );
  box-shadow:
    0 0 10px rgba(255, 255, 255, 0.92),
    0 0 24px rgba(255, 255, 255, 0.5),
    0 0 52px rgba(245, 245, 247, 0.28),
    0 0 100px rgba(210, 210, 216, 0.16);
  animation: hero-core-pulse 4.2s cubic-bezier(0.45, 0, 0.35, 1) infinite;
  z-index: 3;
  will-change: transform, box-shadow;
}
@keyframes hero-core-pulse {
  0%,
  100% {
    transform: scale(1);
    box-shadow:
      0 0 10px rgba(255, 255, 255, 0.92),
      0 0 24px rgba(255, 255, 255, 0.5),
      0 0 52px rgba(245, 245, 247, 0.28),
      0 0 100px rgba(210, 210, 216, 0.16);
  }
  50% {
    transform: scale(1.1);
    box-shadow:
      0 0 16px rgba(255, 255, 255, 1),
      0 0 40px rgba(255, 255, 255, 0.68),
      0 0 80px rgba(245, 245, 247, 0.38),
      0 0 140px rgba(210, 210, 216, 0.22);
  }
}

.hero-vis-orbit {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--fg-4);
  animation: orbit-spin 28s linear infinite;
  z-index: 2;
}
.hero-vis-orbit::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 50%;
  width: 5px;
  height: 5px;
  background: var(--fg-2);
  border-radius: 50%;
  transform: translateX(-50%);
}
.hero-vis-orbit.a {
  inset: 6%;
}
.hero-vis-orbit.b {
  inset: 18%;
  animation-duration: 18s;
  animation-direction: reverse;
}
.hero-vis-orbit.b::before {
  background: var(--signal);
  box-shadow: 0 0 8px rgba(200, 200, 204, 0.55);
}

/* ============================================================================
   what — centred dictionary-entry definition between hero and how
   ----------------------------------------------------------------------------
   Single column, no card frame: this section's job is to *break* the
   text-left / visual-right rhythm of the surrounding blocks with a quiet
   typographic pause. One JS-driven effect lives here: `.what-def` types its
   line out once on first viewport entry (`[data-type-once]` hook in
   landing.js). Different from the screen-vis caret which loops; this one
   types the line and stops.
   ============================================================================ */
/* selector is `section.what` (not bare `.what`) because the privacy section
   already uses <span class="what"> for its deny-list items — a bare class
   would clobber those spans with padding/position. */
section.what {
  padding: 100px 0 120px;
  position: relative;
}
@media (max-width: 720px) {
  section.what {
    padding: 64px 0 80px;
  }
}

.what-stage {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.what-eyebrow {
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  margin-bottom: 36px;
}

.what-term {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 36px;
}
.what-word {
  display: inline-block;
  font-family: var(--font);
  font-size: clamp(48px, 7vw, 84px);
  font-weight: var(--w-light);
  line-height: 1;
  color: var(--fg);
  text-transform: lowercase;
  letter-spacing: 0.14em;
  /* added padding-left compensates for the right-side optical gap that
     letter-spacing creates after the last glyph — keeps the word visually
     centered under the eyebrow rather than drifting left. */
  padding-left: 0.14em;
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.5),
    0 0 18px rgba(255, 255, 255, 0.14),
    0 0 48px rgba(255, 255, 255, 0.06);
}
.what-meta {
  color: var(--fg-3);
  font-size: 12px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.what-meta em {
  font-style: normal;
  color: var(--fg-2);
}

.what-def {
  color: var(--fg);
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.4;
  font-weight: var(--w-reg);
  text-transform: lowercase;
  max-width: 560px;
  /* When the JS-driven type-once is active, the line is emptied and refilled
     character-by-character. Reserve a min-height so the layout below doesn't
     jump up during the typewriter pass. */
  min-height: 1.4em;
}

.what-rule {
  width: 60px;
  height: 1px;
  background: var(--fg-4);
  margin: 36px auto;
}

.what-sub {
  color: var(--fg-2);
  font-size: 14px;
  line-height: 1.7;
  max-width: 560px;
  text-wrap: pretty;
}

/* coda — pulled-out closing line under the sub-paragraph. Brighter (var(--fg)
   vs --fg-2), one step larger, and with a faint glow that echoes the .what-word
   text-shadow so the line reads as the section's takeaway rather than a
   continuation of the prose above. */
.what-coda {
  margin-top: 20px;
  color: var(--fg);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.5;
  text-transform: lowercase;
  letter-spacing: 0.005em;
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.45),
    0 0 16px rgba(255, 255, 255, 0.12),
    0 0 42px rgba(255, 255, 255, 0.05);
}

@media (max-width: 720px) {
  .what-eyebrow      { margin-bottom: 24px; }
  .what-term         { margin-bottom: 28px; }
  .what-rule         { margin: 28px auto; }
  .what-sub          { font-size: 13px; line-height: 1.65; }
  .what-coda         { margin-top: 16px; font-size: 14px; }
}

/* ============================================================================
   how it works
   ============================================================================ */
.howto {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 96px;
  align-items: start;
}
@media (max-width: 980px) {
  .howto {
    grid-template-columns: 1fr;
    gap: 56px;
  }
}

.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 8px;
  padding: 24px 0 24px 24px;
  border-top: 1px solid var(--fg-4);
  cursor: pointer;
  transition: background var(--t-fast);
  position: relative;
  align-items: start;
}
.step:last-child {
  border-bottom: 1px solid var(--fg-4);
}
.step:hover {
  background: rgba(255, 255, 255, 0.012);
}

.step.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--fg);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}
.step.is-active .step-title {
  color: var(--fg);
}
.step.is-active .step-n {
  color: var(--fg);
}

.step-icon {
  display: flex;
  align-items: flex-start;
  padding-top: 3px;
}
.step-n {
  font-size: 22px;
  font-weight: var(--w-light);
  letter-spacing: -0.02em;
  color: var(--fg-3);
  line-height: 1;
  transition: color var(--t-med);
  font-variant-numeric: tabular-nums;
}
.step:hover .step-n {
  color: var(--fg-2);
}

/* The "no more room" step uses × instead of "04". The character is half the
   width of a 2-digit number AND renders smaller in JetBrains Mono (drawn at
   x-height, not cap-height), so it would look tiny and offset-left without
   this override. Pin it to the same 2ch column the digits occupy, center it,
   bump the font-size + weight so it matches the digits' visual mass. */
.step[data-step="3"] .step-n {
  display: inline-block;
  min-width: 2ch;
  text-align: center;
  font-size: 30px;
  font-weight: var(--w-reg);
  /* shift up a hair so the × baseline aligns with where the "0" cap-height
     would sit — character has no descender so it floats low otherwise. */
  transform: translateX(-5px);
}

.step-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.step-title {
  color: var(--fg-2);
  font-size: 17px;
  font-weight: var(--w-reg);
  letter-spacing: var(--tracking);
  text-transform: lowercase;
  transition: color var(--t-med);
}
.step-text {
  color: var(--fg-3);
  font-size: 12.5px;
  line-height: 1.6;
  max-width: 380px;
}

/* ----- flow diagram ----- */
.flow {
  position: sticky;
  top: 112px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--fg-4);
  background: var(--bg-1);
  border-radius: 2px;
  overflow: hidden;
  padding: 24px;
  display: flex;
  flex-direction: column;
}
.flow-head {
  display: flex;
  justify-content: space-between;
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  margin-bottom: 16px;
}
.flow-canvas {
  flex: 1;
  position: relative;
}
.flow-canvas svg.flow-edges {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  z-index: 1;
}

/* nodes are positioned by % onto the canvas — anchored at the RING center so
   the (left, top) coordinate lines up exactly with where edges converge. */
.flow-node {
  position: absolute;
  z-index: 2;
  transform: translate(
    -50%,
    -22px
  ); /* ring is 44px tall, sits at the top of the column */
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  width: 96px;
}
.flow-node .ring {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--fg-4);
  background: var(--bg-2);
  display: grid;
  place-items: center;
  position: relative;
  transition:
    border-color var(--t-med),
    box-shadow var(--t-med);
  color: var(--fg-3);
}
.flow-node .ring svg {
  width: 18px;
  height: 18px;
}
.flow-node label {
  color: var(--fg-2);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.flow-node .sub {
  color: var(--fg-3);
  font-size: 10px;
  line-height: 1.4;
}

.flow-node.lit .ring {
  border-color: var(--fg);
  color: var(--fg);
  box-shadow:
    0 0 18px rgba(255, 255, 255, 0.22),
    inset 0 0 8px rgba(255, 255, 255, 0.05);
}
.flow-node.lit label {
  color: var(--fg);
}

/* edges */
#flowPath .p2p,
#flowPath .signaling {
  transition:
    stroke var(--t-med),
    opacity var(--t-med);
  fill: none;
}
#flowPath .p2p {
  stroke: var(--fg-3);
  stroke-width: 1;
  opacity: 0.4;
}
#flowPath .signaling {
  stroke: var(--fg-3);
  stroke-width: 1;
  stroke-dasharray: 3 4;
  opacity: 0.4;
}
#flowPath[data-state="share"] .signaling {
  stroke: var(--fg);
  opacity: 1;
}
#flowPath[data-state="share"] .p2p {
  opacity: 0.4;
}
#flowPath[data-state="talk"] .p2p {
  stroke: var(--fg);
  stroke-width: 1.5;
  opacity: 1;
}
#flowPath[data-state="talk"] .signaling {
  opacity: 0.3;
}
#flowPath[data-state="close"] .p2p,
#flowPath[data-state="close"] .signaling {
  opacity: 0.15;
}

#flowSig,
#flowSig2 {
  transition: opacity var(--t-med);
  opacity: 0;
}
#flowPath[data-state="share"] #flowSig {
  opacity: 1;
  animation: sig-move 1.8s var(--ease) infinite;
}
#flowPath[data-state="share"] #flowSig2 {
  opacity: 1;
  animation: sig-move 1.8s var(--ease) infinite 0.9s;
}
@keyframes sig-move {
  0% {
    offset-distance: 0%;
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    offset-distance: 100%;
    opacity: 0;
  }
}

#flowPing,
#flowPing2 {
  transition: opacity var(--t-med);
  opacity: 0;
}
#flowPath[data-state="talk"] #flowPing {
  opacity: 1;
  animation: ping-move 1.6s var(--ease) infinite;
}
#flowPath[data-state="talk"] #flowPing2 {
  opacity: 1;
  animation: ping-move 1.6s var(--ease) infinite 0.8s reverse;
}
@keyframes ping-move {
  0% {
    offset-distance: 0%;
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    offset-distance: 100%;
    opacity: 0;
  }
}

.flow-foot {
  display: flex;
  justify-content: space-between;
  margin-top: 16px;
  gap: 18px;
  flex-wrap: wrap;
}
.flow-legend {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.flow-legend .swatch {
  width: 20px;
  height: 1px;
  background: var(--fg-2);
}
.flow-legend.dashed .swatch {
  background: transparent;
  border-top: 1px dashed var(--fg-3);
}

/* ============================================================================
   why — compact, interactive grid
   ============================================================================ */
.qual-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  /* Разделители рисуем бордерами: top+left у каждой .qual + right+bottom у
     контейнера = одинарные hairline'ы при любом числе колонок (3/2/1). Старый
     gap-reveal (gap:1px + background:var(--fg-4)) убран — он требовал
     НЕпрозрачных ячеек, а они теперь прозрачные (сквозь них виден фон-канвас). */
  border-right: 1px solid var(--fg-4);
  border-bottom: 1px solid var(--fg-4);
  border-radius: 2px;
  overflow: hidden;
}
@media (max-width: 900px) {
  .qual-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 560px) {
  .qual-grid {
    grid-template-columns: 1fr;
  }
}

.qual {
  /* прозрачный без hover (как .plat-card) — сквозь карточку видно фоновый
     канвас; серый var(--bg-1) проявляется только на hover. Анимация
     «проезжающего света» (.qual::before) при этом сохраняется. */
  background: transparent;
  border-top: 1px solid var(--fg-4);
  border-left: 1px solid var(--fg-4);
  padding: 22px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: background var(--t-med);
  min-height: 168px;
  overflow: hidden;
  cursor: default;
}
.qual:hover {
  background: var(--bg-1);
}

/* a subtle, slow scanline shimmer that reads on hover */
.qual::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    115deg,
    transparent 0%,
    transparent 45%,
    rgba(255, 255, 255, 0.04) 50%,
    transparent 55%,
    transparent 100%
  );
  background-size: 240% 240%;
  background-position: 100% 0%;
  opacity: 0;
  transition:
    opacity 320ms var(--ease),
    background-position 1200ms var(--ease);
}
.qual:hover::before {
  opacity: 1;
  background-position: 0% 100%;
}

.qual-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.qual-tag {
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.qual-glyph {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  color: var(--fg-3);
  transition:
    color var(--t-med),
    transform var(--t-med);
  position: relative;
}
.qual-glyph svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.qual:hover .qual-glyph {
  color: var(--fg);
  transform: scale(1.08);
}

/* the strikethrough line in qual glyphs grows along its own diagonal
   (top-left → bottom-right) by animating stroke-dashoffset. */
.qual-glyph .ban {
  stroke-dasharray: 26;
  stroke-dashoffset: 26;
  transition: stroke-dashoffset 520ms var(--ease);
}
.qual:hover .qual-glyph .ban {
  stroke-dashoffset: 0;
}

.qual-title {
  color: var(--fg);
  font-size: 13.5px;
  font-weight: var(--w-med);
  letter-spacing: var(--tracking);
  text-transform: lowercase;
}
.qual-text {
  color: var(--fg-3);
  font-size: 12px;
  line-height: 1.55;
  margin-top: auto;
}

/* ============================================================================
   inside — feature rows
   ============================================================================ */
.feat-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  padding: 64px 0;
  border-top: 1px solid var(--fg-4);
  align-items: center;
}
.feat-row:last-child {
  border-bottom: 1px solid var(--fg-4);
}
.feat-row.flip {
  grid-template-columns: 1.4fr 1fr;
}
.feat-row.flip .feat-copy {
  order: 2;
}
.feat-row.flip .feat-vis {
  order: 1;
}
@media (max-width: 900px) {
  .feat-row,
  .feat-row.flip {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 0;
  }
  .feat-row.flip .feat-copy {
    order: 1;
  }
  .feat-row.flip .feat-vis {
    order: 2;
  }
}
@media (max-width: 520px) {
  .feat-row,
  .feat-row.flip {
    gap: 20px;
    padding: 36px 0;
  }
  .feat-copy {
    max-width: 100%;
    gap: 12px;
  }
  .feat-title {
    font-size: clamp(18px, 5.5vw, 24px);
  }
  .feat-text {
    font-size: 13px;
  }
}

.feat-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 440px;
}
.feat-eyebrow {
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.feat-title {
  color: var(--fg);
  font-size: clamp(22px, 2.2vw, 28px);
  line-height: 1.15;
  font-weight: var(--w-reg);
  text-transform: lowercase;
}
.feat-text {
  color: var(--fg-2);
  font-size: 14px;
  line-height: 1.65;
}
.feat-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.feat-vis {
  position: relative;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--fg-4);
  background: var(--bg-1);
  border-radius: 2px;
  overflow: hidden;
  min-width: 0;
}
@media (max-width: 520px) {
  .feat-vis {
    aspect-ratio: auto;
  }
  .feat-vis .vis-body {
    padding: 14px;
  }
  /* mesh: peers расставлены по %; почти квадрат — peer'ы не слипаются по вертикали */
  .feat-vis:has(.mesh-wrap) {
    aspect-ratio: 5 / 4;
  }
  .flow {
    aspect-ratio: 4 / 5;
  }
  /* chat: контент сам определит высоту, без зияющей пустоты сверху */
  .feat-vis:has(.chat-vis) .chat-vis {
    justify-content: flex-start;
  }
  /* screen: высота по объёму кода, без пустого низа */
}
.feat-vis .vis-head {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--fg-4);
  color: var(--fg-3);
  font-size: 10.5px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.feat-vis .vis-body {
  padding: 22px;
  height: calc(100% - 39px);
  position: relative;
}

/* ----- mesh viz ----- */
.mesh-wrap {
  position: relative;
  height: 100%;
}
.mesh-wrap svg.mesh-edges {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.mesh-peer {
  position: absolute;
  transform: translate(-50%, -50%);
  text-align: center;
  width: 60px;
}
.mesh-peer .av {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--fg-3);
  margin: 0 auto 6px;
  background: var(--bg-2);
  display: grid;
  place-items: center;
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: lowercase;
  font-weight: var(--w-med);
  position: relative;
}
.mesh-peer.live .av {
  border-color: var(--fg);
  color: var(--fg);
}
.mesh-peer.live .av::after {
  content: "";
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  bottom: -1px;
  right: -1px;
  box-shadow: 0 0 8px rgba(200, 200, 204, 0.55);
  border: 1.5px solid var(--bg-1);
}
.mesh-peer .nm {
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  white-space: nowrap;
}
.mesh-peer.live .nm {
  color: var(--fg-2);
}

/* arc on the avatar when talking */
.mesh-peer .arc {
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  pointer-events: none;
}
.mesh-peer .arc svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

/* ----- chat viz ----- */
.chat-vis {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
  justify-content: flex-end;
}
.chat-msg {
  border: 1px solid var(--fg-4);
  background: var(--bg-2);
  padding: 10px 12px;
  border-radius: 2px;
  max-width: 80%;
  color: var(--fg-2);
  font-size: 12px;
  line-height: 1.5;
}
.chat-msg .who {
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  margin-bottom: 4px;
}
.chat-msg.me {
  align-self: flex-end;
  border-color: var(--fg-2);
}
.chat-msg.file {
  display: flex;
  align-items: center;
  gap: 10px;
}
.chat-msg.file .icon {
  width: 28px;
  height: 28px;
  border: 1px solid var(--fg-3);
  border-radius: 2px;
  display: grid;
  place-items: center;
  color: var(--fg-3);
  font-size: 9px;
  flex-shrink: 0;
  text-transform: uppercase;
}
.chat-msg.file .meta {
  color: var(--fg-3);
  font-size: 10px;
  margin-top: 2px;
}

/* ----- screen share viz — mock window with code + cursor ----- */
.screen-vis {
  height: 100%;
  border: 1px solid var(--fg-4);
  background: var(--bg-2);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.screen-vis .screen-bar {
  height: 24px;
  border-bottom: 1px solid var(--fg-4);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  flex-shrink: 0;
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.screen-vis .traffic {
  display: inline-flex;
  gap: 5px;
}
.screen-vis .traffic span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fg-4);
}
.screen-vis .screen-body {
  flex: 1;
  position: relative;
  overflow: hidden;
  padding: 14px 16px;
  font-size: 10.5px;
  line-height: 1.55;
  color: var(--fg-3);
  letter-spacing: 0;
}
.screen-vis .code-line {
  display: block;
  white-space: nowrap;
  overflow: hidden;
}
.screen-vis .ln {
  color: var(--fg-4);
  display: inline-block;
  width: 20px;
}
.screen-vis .kw {
  color: var(--fg-2);
}
.screen-vis .fn {
  color: var(--fg);
}
.screen-vis .st {
  color: #b6a47a;
}
.screen-vis .cm {
  color: var(--fg-4);
  font-style: italic;
}

.screen-cursor {
  position: absolute;
  width: 14px;
  height: 18px;
  pointer-events: none;
  left: 0;
  top: 0;
  transform: translate(0, 0);
  transition: transform 700ms cubic-bezier(0.4, 0.1, 0.3, 1);
  z-index: 3;
}
.screen-cursor svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.18));
}
.screen-cursor::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  left: -4px;
  top: -2px;
  border: 1px solid rgba(230, 230, 232, 0.8);
  border-radius: 50%;
  opacity: 0;
  transform: scale(0.2);
  pointer-events: none;
}
.screen-cursor.is-clicking::after {
  animation: cursor-click 360ms cubic-bezier(0.2, 0.6, 0.2, 1) forwards;
}
@keyframes cursor-click {
  0% {
    opacity: 1;
    transform: scale(0.2);
  }
  100% {
    opacity: 0;
    transform: scale(1.4);
  }
}

/* a live, typeable line at the bottom of the code body. JS clicks here,
   types a snippet, then erases — in a quiet loop. */
.live-line {
  position: relative;
  min-height: 1.55em;
  color: var(--fg-2);
}
.live-line .typed {
  color: var(--fg-2);
}
.caret {
  display: inline-block;
  width: 1px;
  height: 1.05em;
  background: var(--fg);
  vertical-align: -2px;
  margin-left: 1px;
  animation: caret-blink 1.05s steps(1, end) infinite;
}
@keyframes caret-blink {
  50% {
    opacity: 0;
  }
}

.screen-onair {
  position: absolute;
  top: 32px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--screen);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  z-index: 4;
}
.screen-onair::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--screen);
  box-shadow: 0 0 8px rgba(95, 170, 122, 0.55);
  animation: void-pulse 1.6s var(--ease) infinite;
}

.screen-resolution {
  position: absolute;
  bottom: 10px;
  right: 12px;
  color: var(--fg-4);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 4;
}

/* ============================================================================
   manifest / privacy
   ============================================================================ */
.manifest {
  padding: 160px 0;
  text-align: center;
  position: relative;
}
.manifest .lead {
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  margin-bottom: 32px;
}
.manifest h2 {
  font-size: clamp(28px, 3.6vw, 48px);
  font-weight: var(--w-light);
  line-height: 1.25;
  text-transform: lowercase;
  color: var(--fg);
  max-width: 880px;
  margin: 0 auto 64px;
  letter-spacing: -0.005em;
  text-wrap: balance;
}
@media (max-width: 720px) {
  .manifest {
    padding: 100px 0;
  }
  .manifest h2 {
    font-size: clamp(22px, 6vw, 36px);
    max-width: 100%;
    line-height: 1.3;
    margin-bottom: 40px;
  }
  .manifest h2 br {
    display: block;
    content: "";
    margin-top: 0.35em;
  }
}
.manifest h2 em {
  color: var(--fg-3);
  font-style: normal;
}

.deny-list {
  max-width: 640px;
  margin: 0 auto;
  border-top: 1px solid var(--fg-4);
  list-style: none;
}
.deny-list li {
  display: grid;
  grid-template-columns: 80px 1fr 80px;
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--fg-4);
  text-align: left;
}
.deny-list .key {
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.deny-list .what {
  color: var(--fg);
  font-size: 16px;
  letter-spacing: var(--tracking);
  text-transform: lowercase;
}
.deny-list .stat {
  color: var(--signal-warn);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  text-align: right;
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
  margin-right: 20px;
}
.deny-list .stat::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--signal-warn);
  box-shadow: 0 0 8px rgba(184, 122, 90, 0.45);
}
@media (max-width: 720px) {
  .deny-list li {
    grid-template-columns: 60px 1fr;
  }
  .deny-list .stat {
    grid-column: 2;
    justify-content: flex-start;
  }
}

/* ============================================================================
   platforms
   ============================================================================ */
.plat {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--fg-4);
  border-radius: 2px;
  /* overflow: visible — иначе absolute-меню сплит-кнопки скачивания режется
     по краю карточки. Скругление 2px при этом визуально не страдает. */
  overflow: visible;
}
@media (max-width: 720px) {
  .plat {
    grid-template-columns: 1fr;
  }
}

.plat-card {
  padding: 48px 36px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  border-right: 1px solid var(--fg-4);
  position: relative;
  transition: background var(--t-med);
}
@media (max-width: 720px) {
  .plat-card {
    border-right: 0;
    border-bottom: 1px solid var(--fg-4);
    padding: 36px 24px;
  }
}
.plat-card:last-child {
  border-right: 0;
}
.plat-card:hover {
  background: var(--bg-1);
}
.plat-card .index {
  color: var(--fg-3);
  font-size: 10px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
}
.plat-card .name {
  color: var(--fg);
  font-size: 32px;
  font-weight: var(--w-reg);
  text-transform: lowercase;
}
.plat-card .desc {
  color: var(--fg-2);
  font-size: 13px;
  line-height: 1.65;
  margin-bottom: 12px;
  max-width: 380px;
}
.plat-card .spec {
  list-style: none;
  margin-bottom: 24px;
}
.plat-card .spec li {
  display: grid;
  grid-template-columns: 1fr auto;
  padding: 10px 0;
  border-top: 1px solid var(--fg-4);
  color: var(--fg-3);
  font-size: 11.5px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  align-items: center;
}
.plat-card .spec li:last-child {
  border-bottom: 1px solid var(--fg-4);
}
.plat-card .spec li b {
  color: var(--fg);
  font-weight: var(--w-med);
}
.plat-card .actions {
  margin-top: auto;
}

/* download split-button + dropdown -------------------------------------------
   Главная половина качает desktop-installer; стрелка справа раскрывает меню с
   обоими вариантами (desktop + portable). Кнопки БЕЗ href — загрузка идёт из
   JS (initDownload в landing.js) через временный <a download>, поэтому браузер
   не светит длинный github-URL в статус-баре при наведении. Меню позиционировано
   absolute, чтобы раскрытие не растягивало карточку и не ломало grid-выравнивание
   с соседней web-карточкой. */
.dl {
  position: relative;
  display: inline-block;
}
.dl-split {
  display: inline-flex;
  align-items: stretch;
  transition: transform 380ms var(--ease);
}
.dl-split:hover {
  transform: translateY(-2px);
}
.dl-main {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}
.dl-toggle {
  padding: 0 14px;
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
  margin-left: -1px;  /* схлопнуть стык двух бордюров в один */
}
/* половинки светлеют как единое целое; индивидуальный lift гасим, чтобы пилюля
   не разъезжалась «лесенкой» при наведении на одну из половин. Селектор через
   .dl-split — поднимает специфичность до уровня .btn.primary:hover, иначе тот
   перебивал бы transform:none и каждая половинка поднималась бы сама. */
.dl-split .dl-main:hover,
.dl-split .dl-toggle:hover,
.dl-split .dl-main:active,
.dl-split .dl-toggle:active {
  transform: none;
}
.dl-split:hover .dl-main,
.dl-split:hover .dl-toggle {
  background: #fff;
  border-color: #fff;
}
.dl-toggle::after {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  bottom: 9px;
  width: 1px;
  background: rgba(0, 0, 0, 0.16);  /* hairline-делитель на светлой primary-заливке */
}
.dl-ico,
.dl-chev {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}
.dl-chev {
  transition: transform var(--t-med);
}
.dl[data-open="true"] .dl-chev {
  transform: rotate(180deg);
}
.dl-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 100%;
  background: var(--bg-1);
  border: 1px solid var(--fg-4);
  border-radius: var(--radius);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 5;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition:
    opacity var(--t-fast),
    transform var(--t-fast);
}
.dl[data-open="true"] .dl-menu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.dl-opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  height: 40px;
  padding: 0 14px;
  background: transparent;
  border: 0;
  border-radius: 2px;
  color: var(--fg-2);
  font-family: var(--font);
  font-size: var(--t-12);
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background var(--t-fast),
    color var(--t-fast);
}
.dl-opt:hover {
  background: var(--bg-0);
  color: var(--fg);
}
.dl-opt .dl-ico {
  color: var(--fg-3);
  transition: color var(--t-fast);
}
.dl-opt:hover .dl-ico {
  color: var(--fg);
}

/* ============================================================================
   contributors — credits crawl + self-typing announcer + persistent CTA
   ----------------------------------------------------------------------------
   Source-of-truth list (PREMIUM_NICKNAMES in public/js/config.js) is served
   over /api/contributors and rendered by injectContributors() in landing.js.
   Layout is a hairline-framed strip: live counter eyebrow → infinite marquee
   of gold-shimmer names → footer row with typing announcer + persistent CTA.
   The gold palette mirrors .participant-name.premium in public/css/stage.css —
   intentionally muted wheat/amber, NOT #FFD700.
   ============================================================================ */
.contrib-stage {
  max-width: 1080px;
  margin: 0 auto;
  padding-top: 48px;
}

/* hairline-framed strip — top/bottom borders only, no fill */
.contrib-frame {
  border-top: 1px solid var(--fg-4);
  border-bottom: 1px solid var(--fg-4);
  padding: 28px 0 24px;
}

/* eyebrow inside the frame: "● roll · N in list · helping void" */
.contrib-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--fg-3);
  font-size: 11px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  padding: 0 24px;
  margin-bottom: 20px;
}
.contrib-eyebrow .dot {
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--signal);
  box-shadow: 0 0 8px rgba(200, 200, 204, 0.45);
  display: inline-block;
}

/* marquee — single-axis infinite scroll with masked edges. JS duplicates
   the name list so translateX(-50%) lands on an identical item → seamless. */
.contrib-marquee {
  position: relative;
  /* overflow:hidden is required so the duplicated marquee track doesn't
     spill sideways past the frame; vertical bleed for the hover-glow halo
     is bought by generous Y-padding instead (overflow-x:clip + overflow-y:
     visible per spec collapses to auto when the X axis is non-visible, so
     it doesn't actually rescue the glow). */
  overflow: hidden;
  padding: 32px 0;
  mask-image: linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 8%, #000 92%, transparent 100%);
}
.contrib-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  animation: contrib-roll 56s linear infinite;
  will-change: transform;
}
@keyframes contrib-roll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.contrib-track li {
  display: inline-flex;
  align-items: center;
  gap: 36px;
  padding: 0 24px;
}

/* gold name — shimmer = background-position cycle; glow = drop-shadow
   (text-shadow is ignored under background-clip:text, so the warm halo
   MUST come from filter). */
.contrib-name {
  font-family: var(--font);
  font-size: clamp(36px, 4.4vw, 56px);
  font-weight: var(--w-light);
  letter-spacing: 0.02em;
  text-transform: lowercase;
  /* names aren't clickable — keep the default arrow, not the I-beam text
     cursor that <span>s otherwise inherit from the surrounding text flow. */
  cursor: default;
  background: linear-gradient(110deg,
    #b89254 0%, #e8c97a 28%, #f6e4ad 50%, #e8c97a 72%, #b89254 100%);
  background-size: 220% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
          color: transparent;
  filter:
    drop-shadow(0 0 4px  rgba(232, 201, 122, 0.35))
    drop-shadow(0 0 12px rgba(232, 201, 122, 0.18));
  animation: contrib-shimmer 7s cubic-bezier(0.45, 0.05, 0.55, 0.95) infinite;
  /* hover transition kept on the base so pointer-in and pointer-out are
     symmetric. Long duration + easeOutExpo-like curve = the halo blooms
     and decays with no perceptible "snap" — same easing the brand-mark
     wordmark uses, so the contributors section borrows that house feel. */
  transition:
    filter 720ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 720ms cubic-bezier(0.16, 1, 0.3, 1);
}
.contrib-track li:hover .contrib-name {
  /* hover ADDS to the base glow (radii > base 4/12), with a soft third
     bloom layer at 26px for the perceptible "lift" without melting. Scale
     is intentionally tiny — the glow is what reads as a reaction, not the
     geometry shift. */
  filter:
    drop-shadow(0 0 5px  rgba(246, 228, 173, 0.5))
    drop-shadow(0 0 14px rgba(232, 201, 122, 0.32))
    drop-shadow(0 0 26px rgba(232, 201, 122, 0.18));
  transform: scale(1.012);
}
@keyframes contrib-shimmer {
  0%, 100% { background-position:   0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* placeholder slot — "+ ваше_имя" / "+ your_name". Deliberately NOT gold
   (only real contributors get the premium treatment). Reads as an empty
   seat at the table: dashed underline, muted color, brightens on hover.
   Hover timing, scale, and glow-ladder mirror the gold-name hover so both
   reactions feel like they come from the same surface — only the palette
   differs (cool neutral white instead of warm gold). */
.contrib-name.placeholder {
  background: none;
  -webkit-text-fill-color: var(--fg-3);
          color: var(--fg-3);
  filter: none;
  animation: none;
  border-bottom: 1px dashed var(--fg-4);
  padding-bottom: 4px;
  font-weight: var(--w-light);
  transition:
    color 720ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 720ms cubic-bezier(0.16, 1, 0.3, 1),
    filter 720ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 720ms cubic-bezier(0.16, 1, 0.3, 1);
}
.contrib-track li:hover .contrib-name.placeholder {
  -webkit-text-fill-color: var(--fg);
          color: var(--fg);
  border-bottom-color: var(--fg-2);
  /* same 5/14/26 drop-shadow ladder as the gold hover, recoloured to the
     neutral fg palette — the lift reads as "responsive" without claiming
     premium status. */
  filter:
    drop-shadow(0 0 5px  rgba(230, 230, 232, 0.35))
    drop-shadow(0 0 14px rgba(230, 230, 232, 0.20))
    drop-shadow(0 0 26px rgba(230, 230, 232, 0.10));
  transform: scale(1.012);
}

.contrib-sep {
  color: var(--fg-4);
  font-size: clamp(28px, 3vw, 48px);
  font-weight: var(--w-light);
  line-height: 1;
}

/* footer row — typing announcer on left, persistent CTA pill on right */
.contrib-foot {
  /* grid (1fr auto) instead of flex(space-between): with flex+space-between
     the announcer was shrinking to its intrinsic width and the short typed
     line read as drifting mid-row. 1fr forces column 1 to consume ALL the
     leftover space; the announcer's content then renders at the column's
     left edge — no chance of accidental centering. */
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
  margin-top: 18px;
  padding: 18px 24px 0;
  border-top: 1px solid var(--fg-4);
}
.contrib-announcer {
  min-width: 0;
  color: var(--fg-2);
  font-size: 13px;
  letter-spacing: var(--tracking);
  /* nowrap (not `pre`): the markup is indented for readability, and `pre`
     would render those indent characters as visible whitespace — pushing
     the typed line to the right and inflating the row height. nowrap
     normalises whitespace yet still keeps the line on one row for the
     text-overflow:ellipsis to work when names ever grow long. */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
  justify-self: start;
}
.contrib-caret {
  display: inline-block;
  color: var(--signal-warn);
  margin-left: 2px;
  animation: contrib-blink 0.9s steps(2) infinite;
}
@keyframes contrib-blink {
  0%, 50%      { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

.contrib-cta {
  flex: 0 0 auto;
  color: var(--fg);
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: var(--tracking-wide);
  text-transform: lowercase;
  text-decoration: none;
  border: 1px solid var(--fg-4);
  border-radius: var(--radius);
  padding: 10px 16px;
  white-space: nowrap;
  transition:
    border-color var(--t-fast),
    color var(--t-fast),
    background var(--t-fast);
}
.contrib-cta:hover {
  border-color: var(--fg-2);
  background: var(--bg-1);
}
.contrib-cta:active { background: var(--bg-2); }

@media (max-width: 720px) {
  .contrib-stage    { padding-top: 32px; }
  .contrib-frame    { padding: 20px 0 16px; }
  .contrib-eyebrow  { padding: 0 16px; margin-bottom: 14px; font-size: 10px; }
  .contrib-track li { gap: 24px; padding: 0 16px; }
  .contrib-name     { font-size: 28px; }
  .contrib-sep      { font-size: 22px; }
  .contrib-foot {
    /* mobile: stack announcer + cta vertically (grid single-column) */
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px 16px 0;
  }
  .contrib-announcer { font-size: 11px; }
  .contrib-cta { text-align: center; padding: 12px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .contrib-name  { animation: none; background-position: 50% 50%; }
  /* marquee-скролл оставляем включённым даже под reduce-motion — по запросу:
     это горизонтальная лента, не вестибулярно-агрессивная анимация. */
  .contrib-caret { animation: none; }
}

/* empty-state: JS sets [hidden] when the names array comes back empty.
   `[hidden]` defaults to display:none but our `section { position:relative;
   z-index:2 }` declared elsewhere wouldn't fight it — explicit rule kept
   for defensive clarity if some future selector tries to override. */
section.contrib[hidden] { display: none; }

/* ============================================================================
   final cta
   ============================================================================ */
.final {
  padding: 200px 0 240px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final .ring-stack {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: max(840px, 130vw);
  aspect-ratio: 1 / 1;
  pointer-events: none;
  opacity: 0.5;
}
@media (max-width: 720px) {
  .final {
    padding: 120px 0 140px;
  }
  .final .ring-stack {
    width: max(560px, 160vw);
  }
  .final .a {
    font-size: clamp(40px, 12vw, 72px);
  }
}
.final .ring-stack span {
  position: absolute;
  inset: 0;
  border: 1px solid var(--fg-4);
  border-radius: 50%;
}
.final .ring-stack span:nth-child(2) {
  inset: 10%;
  opacity: 0.7;
}
.final .ring-stack span:nth-child(3) {
  inset: 20%;
  opacity: 0.5;
}
.final .ring-stack span:nth-child(4) {
  inset: 30%;
  opacity: 0.3;
}
.final .ring-stack span:nth-child(5) {
  inset: 40%;
  opacity: 0.2;
}

.final-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}
.final .q {
  color: var(--fg-3);
  font-size: 13px;
  letter-spacing: var(--tracking);
  text-transform: lowercase;
  font-style: italic;
}
.final .a {
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1;
  color: var(--fg);
  font-weight: var(--w-light);
  text-transform: lowercase;
  letter-spacing: -0.01em;
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.55),
    0 0 24px rgba(255, 255, 255, 0.18),
    0 0 80px rgba(255, 255, 255, 0.1);
}

.final-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}
.final-actions .btn {
  height: 52px;
  padding: 0 28px;
}
@media (max-width: 480px) {
  .final-actions {
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
  }
  .final-actions .btn {
    width: min(280px, 100%);
    justify-content: center;
    height: 48px;
  }
}

/* ============================================================================
   footer — minimal centered credit
   ============================================================================ */
.footer {
  padding: 16px var(--gutter) 18px;
  text-align: center;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-copy a {
  color: inherit;
  text-decoration: none;
  position: relative;
  display: inline-block;
  transform: translateX(0);
  transition: transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
}

.footer-copy a::after {
  content: "\2197"; /* ↗ */
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translate(-2px, calc(-50% - 0.06em));
  opacity: 0;
  font-size: 0.9em;
  line-height: 1;
  pointer-events: none;
  transition:
    opacity 520ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 680ms cubic-bezier(0.22, 1, 0.36, 1);
}
.footer-copy a:hover {
  transform: translateX(-1.4em);
}
.footer-copy a:hover::after {
  opacity: 1;
  transform: translate(5px, calc(-50% - 0.06em));
}

/* Internal links in the footer (e.g. /privacy) — skip the slide+↗ animation
   that's meant to telegraph "leaving the site". For same-origin pages we want
   the standard subtle hover, not the external-link departure visual. */
.footer-copy a.internal::after {
  content: none;
}
.footer-copy a.internal:hover {
  transform: none;
  color: var(--fg-2);
}

/* footer language link — manual override for the URL-based language pick.
   Intentionally quiet (low-contrast, small caps) so it doesn't compete with
   the copyright line, but still discoverable for anyone whose system locale
   landed them on the wrong variant (e.g. an English-speaker who got the
   Russian page from a direct social-media share). */
.footer-lang {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: var(--fg-3);
  text-decoration: none;
  border-bottom: 1px dotted var(--fg-4);
  padding-bottom: 1px;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.footer-lang:hover {
  color: var(--fg);
  border-bottom-color: var(--fg-3);
}
.footer-copy {
  margin: 0;
  font-size: 10px;
  line-height: 1.8;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: var(--fg-4);
  cursor: default;
  transition: color 0.6s ease;
  background: transparent;
  border: none;
  display: inline-block;
}
.footer-copy:hover {
  color: var(--fg-3);
  text-shadow:
    0 0 8px rgba(255, 255, 255, 0.12),
    0 0 24px rgba(255, 255, 255, 0.06),
    0 0 60px rgba(255, 255, 255, 0.03);
  animation: footer-glow 2.4s ease-in-out infinite;
}

@keyframes footer-glow {
  0%, 100% {
    text-shadow:
      0 0 6px rgba(255, 255, 255, 0.10),
      0 0 20px rgba(255, 255, 255, 0.05),
      0 0 50px rgba(255, 255, 255, 0.02);
  }
  50% {
    text-shadow:
      0 0 10px rgba(255, 255, 255, 0.18),
      0 0 32px rgba(255, 255, 255, 0.09),
      0 0 80px rgba(255, 255, 255, 0.04);
  }
}

/* ============================================================================
   reveal — initial hidden state lives on .reveal itself, so blocks don't
   "blink" when the .in class is added with an animation-delay (previously
   the keyframe's `both` fill-mode would snap the element back to opacity:0
   for the delay window, then animate in — visually it looked like the
   element flickered off for ~500ms before appearing).

   transition (not animation) is used so the initial hidden state is
   declarative, no fill-mode quirks; will-change keeps it composited.
   ============================================================================ */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 800ms cubic-bezier(0.2, 0.65, 0.2, 1),
    transform 900ms cubic-bezier(0.2, 0.65, 0.2, 1);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal[data-delay="1"] {
  transition-delay: 80ms;
}
.reveal[data-delay="2"] {
  transition-delay: 180ms;
}
.reveal[data-delay="3"] {
  transition-delay: 280ms;
}
.reveal[data-delay="4"] {
  transition-delay: 380ms;
}
.reveal[data-delay="5"] {
  transition-delay: 480ms;
}

/* typing cursor — used by [data-type="cursor"] reveal elements.
   width matches a thin glyph so the line height doesn't jump when text
   appears; steps(2) gives the hard on/off blink instead of a smooth fade. */
.type-cursor {
  display: inline-block;
  width: 0.5ch;
  color: var(--fg);
  animation: cursor-blink 1s steps(2, end) infinite;
  transform: translateY(-0.04em);
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.6),
    0 0 14px rgba(255, 255, 255, 0.22);
}
.type-cursor::before {
  content: "|";
}
@keyframes cursor-blink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}
