*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); height: 100%; overflow: hidden; overscroll-behavior: none; }
body { font-family: var(--font); font-size: var(--t-md); line-height: 1.55; color: var(--ink); background: var(--bg);
  -webkit-font-smoothing: antialiased; height: 100%; overflow: hidden; overscroll-behavior: none; transition: background .6s, color .6s; }
body.locked { overflow: hidden; }
body:not(.entered) #main, body:not(.entered) #foot, body:not(.entered) #head, body:not(.entered) #chatFab { visibility: hidden; }
img, video, svg, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; background: none; border: 0; }
button { cursor: pointer; -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 1.5px solid var(--ink); outline-offset: 3px; border-radius: 8px; }
::selection { background: var(--ink); color: var(--bg); }
[hidden] { display: none !important; }

/* ---------- Фон ---------- */
#bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; background: var(--bg); }
.bg-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 1.4s var(--ease-io); filter: saturate(.9); }
.bg-video.on { opacity: .85; }
[data-theme="dark"] .bg-video[data-fit="smoke"] { filter: invert(1) contrast(1.1); opacity: 0; }
[data-theme="dark"] .bg-video[data-fit="smoke"].on { opacity: .5; }
[data-theme="dark"] .bg-video[data-fit="rise"] { filter: invert(1) contrast(1.05); }
[data-theme="dark"] .bg-video[data-fit="rise"].on { opacity: .55; }
[data-theme="light"] .bg-video.on { opacity: .3; }
@media (min-width: 900px) { .bg-video[data-fit="vortex"], .bg-video[data-fit="waves"] { filter: blur(1.5px) saturate(.9); transform: scale(1.04); } }
#smoke { position: fixed; inset: 0; z-index: 1; pointer-events: none; mix-blend-mode: screen; opacity: .9; }
[data-theme="light"] #smoke { mix-blend-mode: multiply; }
#veil { position: fixed; inset: 0; z-index: 2; pointer-events: none; background: var(--veil); transition: background .6s; }

/* ---------- Сетка ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
/* экраны приложения — см. css/app.css (.scr, .scr-in) */
.split { display: grid; gap: clamp(28px, 5vw, 80px); align-items: center; grid-template-columns: 1fr; }
@media (min-width: 900px) {
  .split { grid-template-columns: 1.05fr .95fr; }
  .split.rev > .copy { order: 2; }
}
.center { text-align: center; margin-left: auto; margin-right: auto; }
.copy.center { max-width: 760px; }

/* ---------- Типографика ---------- */
.display { font-family: var(--font-d); font-weight: 300; font-size: var(--t-xl); line-height: 1.02; letter-spacing: .06em; text-transform: uppercase; text-wrap: balance; }
.display.sm { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem); }
html[lang="ja"] .display, html[lang="ar"] .display { letter-spacing: .01em; line-height: 1.2; }
.hero-title { font-size: var(--t-xxl); }
.lead { color: var(--ink2); font-size: var(--t-md); max-width: 46ch; margin-top: 18px; font-weight: 350; }
.center .lead { margin-left: auto; margin-right: auto; }
.kicker, .eyebrow { display: inline-flex; align-items: center; gap: 12px; font-size: var(--t-xs); letter-spacing: .32em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.kicker i, .eyebrow i { width: 28px; height: 1px; background: var(--line2); display: inline-block; }
.note { font-size: var(--t-xs); color: var(--muted); margin-top: 22px; letter-spacing: .02em; }
small { font-size: var(--t-xs); }

/* ---------- Появление ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); filter: blur(6px); transition: opacity 1s var(--ease), transform 1.1s var(--ease), filter 1s var(--ease); transition-delay: var(--d, 0ms); }
[data-reveal].in { opacity: 1; transform: none; filter: none; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; filter: none; }
}