/* AERODIUM Kyiv — «Спуск у спокій». Одна тема: темна труба. */

:root {
  color-scheme: dark;

  /* ГРУНТ (труба) */
  --ink-0: oklch(0.13 0.012 250);
  --ink-1: oklch(0.18 0.014 250);
  --ink-2: oklch(0.24 0.016 245);
  --ink-3: oklch(0.32 0.018 240);

  /* СВІТЛО */
  --ring: oklch(0.82 0.144 215);
  --ring-soft: oklch(0.72 0.090 215);
  --glass: oklch(0.60 0.066 217);
  --sky: oklch(0.51 0.079 282);
  --steel: oklch(0.78 0.012 240);

  /* БРЕНД */
  --pink: oklch(0.66 0.217 347);
  --pink-deep: oklch(0.56 0.200 347);
  --pink-glow: oklch(0.66 0.217 347 / 0.35);

  /* ТЕКСТ */
  --fg: oklch(0.97 0.006 240);
  --fg-2: oklch(0.78 0.012 240);
  --fg-3: oklch(0.62 0.014 240);
  --fg-on-pink: oklch(0.13 0.012 250);
  --line: oklch(0.97 0.006 240 / 0.12);

  --ok: oklch(0.80 0.14 165);
  --err: oklch(0.68 0.20 25);
  --net: oklch(0.36 0.030 215);

  /* ТИПОГРАФІКА */
  --f-display: 'Sofia Sans Extra Condensed', 'Arial Narrow', 'Oswald', sans-serif;
  --f-text: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

  --t-display: clamp(4.2rem, 1.4rem + 9.2vw, 11.5rem);
  --t-h1: clamp(3rem, 1.4rem + 6.2vw, 7rem);
  --t-h2: clamp(2rem, 1.3rem + 2.8vw, 3.8rem);
  --t-h3: clamp(1.125rem, 1rem + .6vw, 1.5rem);
  --t-body: clamp(1rem, .95rem + .3vw, 1.125rem);
  --t-small: .875rem;
  --t-meter: clamp(.8rem, .7rem + .4vw, 1rem);

  /* СІТКА */
  --tube: clamp(320px, 88vw, 1120px);
  --gutter: clamp(16px, 4vw, 40px);
  --rise: clamp(96px, 14vh, 200px);
  --head: 64px;

  /* керується зі скролу */
  --flash: 0;
  --sky-a: .35;
  --net-a: 0;
  --scroll: 0;

  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--ink-0);
  color: var(--fg);
  font-family: var(--f-text);
  font-size: var(--t-body);
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button { font: inherit; color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }

.sr-live, .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.skip {
  position: fixed; top: 8px; left: 8px; z-index: 100;
  padding: 10px 14px; background: var(--pink); color: var(--fg-on-pink);
  border-radius: 6px; font-weight: 600; transform: translateY(-200%);
}
.skip:focus { transform: none; }

:focus-visible { outline: 2px solid var(--pink); outline-offset: 3px; border-radius: 4px; }

/* ---------- шар A: труба ---------- */
.tube { position: fixed; inset: 0; z-index: 0; background: var(--ink-0); }
.tube canvas { display: block; width: 100%; height: 100%; }
.tube-css { display: none; position: absolute; inset: 0; overflow: hidden; }
.tube-css__rings {
  position: absolute; inset: -20%;
  background:
    repeating-radial-gradient(circle at 50% 46%,
      oklch(0.82 0.144 215 / 0) 0 8.5%,
      oklch(0.82 0.144 215 / .55) 8.6% 8.75%,
      oklch(0.82 0.144 215 / 0) 8.9% 11%),
    radial-gradient(circle at 50% 46%, oklch(0.24 0.016 245) 0, oklch(0.18 0.014 250) 35%, oklch(0.13 0.012 250) 70%);
  transform: translateY(calc(var(--scroll) * -6%));
}
.tube-css__flyer {
  position: absolute; left: 6%; bottom: 18%; width: min(46vw, 420px); height: auto;
  filter: drop-shadow(0 30px 40px oklch(0 0 0 / .6));
}
body.no-webgl .tube canvas { display: none; }
body.no-webgl .tube-css { display: block; }

.haze {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(60vw 40vh at 50% -6%, oklch(0.51 0.079 282 / var(--sky-a)), transparent 70%),
    radial-gradient(70vw 30vh at 50% 106%, oklch(0.72 0.090 215 / var(--net-a)), transparent 70%),
    radial-gradient(60vw 60vw at 50% 50%, oklch(0.72 0.090 215 / calc(var(--flash) * .22)), transparent 70%);
}
.grain {
  position: fixed; inset: 0; z-index: 2; pointer-events: none; opacity: .045; mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='256' height='256'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* ---------- шапка ---------- */
.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40; height: var(--head);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 0 var(--gutter);
  transition: background .3s, backdrop-filter .3s;
}
.top.is-solid { background: oklch(0.13 0.012 250 / .55); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.top__logo img { height: 22px; width: auto; }
.top__meter { position: relative; justify-self: center; }
.meter-btn {
  display: inline-flex; align-items: baseline; gap: 4px;
  background: none; border: 0; padding: 8px 10px; cursor: pointer;
  font-family: var(--f-mono); font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase;
  color: var(--fg);
}
.meter-btn__v { font-size: 1.35em; font-weight: 500; }
.meter-btn__u { color: var(--fg-3); }
.alt-menu {
  position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  min-width: 220px; background: var(--ink-2); border-radius: 8px; padding: 6px;
  border-top: 1px solid var(--line);
}
.alt-menu a {
  display: flex; gap: 12px; align-items: baseline; padding: 10px 12px; text-decoration: none; border-radius: 6px;
  font-size: var(--t-small); color: var(--fg-2);
}
.alt-menu a .mono { width: 2ch; text-align: right; color: var(--fg-3); }
.alt-menu a:hover, .alt-menu a[aria-current="true"] { background: var(--ink-3); color: var(--fg); }
.alt-menu a[aria-current="true"] .mono { color: var(--pink); }
.top__right { justify-self: end; display: flex; align-items: center; gap: 14px; }
.top__cta { opacity: 0; transform: translateY(-4px); pointer-events: none; transition: opacity .25s, transform .25s; }
.top.is-solid .top__cta { opacity: 1; transform: none; pointer-events: auto; }

.lang { display: inline-flex; align-items: center; gap: 6px; font-family: var(--f-mono); font-size: var(--t-small); }
.lang__b { background: none; border: 0; padding: 6px 4px; cursor: pointer; color: var(--fg-3); letter-spacing: .06em; }
.lang__b[aria-pressed="true"] { color: var(--fg); text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--ring-soft); }
.lang__sep { color: var(--ink-3); }

/* ---------- висотомір (десктоп) ---------- */
.alt { position: fixed; right: clamp(10px, 2vw, 28px); top: 50%; transform: translateY(-50%); z-index: 30; display: none; }
.alt__scale { display: flex; flex-direction: column; gap: 0; }
.alt__scale li + li { margin-top: clamp(22px, 5vh, 44px); }
.alt__tick {
  position: relative; display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  text-decoration: none; padding: 4px 0; color: var(--fg-3);
  font-family: var(--f-mono); font-size: var(--t-small); letter-spacing: .06em;
}
.alt__tick::after { content: ''; width: 14px; height: 1px; background: var(--ink-3); transition: width .15s, background .15s; }
.alt__m { width: 2ch; text-align: right; }
.alt__name {
  position: absolute; right: calc(100% + 8px); white-space: nowrap; opacity: 0; transform: translateX(6px);
  transition: opacity .15s, transform .15s; color: var(--fg-2); font-family: var(--f-text); letter-spacing: 0;
}
.alt__tick:hover .alt__name, .alt__tick:focus-visible .alt__name, .alt__tick[aria-current="true"] .alt__name { opacity: 1; transform: none; }
.alt__tick.is-passed { color: var(--fg-2); }
.alt__tick.is-passed::after { background: var(--ring-soft); }
.alt__tick[aria-current="true"] { color: var(--pink); }
.alt__tick[aria-current="true"]::after { width: 24px; background: var(--pink); }
.alt__tick--ground::after { height: 3px; }
@media (min-width: 1024px) { .alt { display: block; } .top__meter .alt-menu { display: none; } }

/* ---------- сітка ярусів ---------- */
main { position: relative; z-index: 3; }
.tier { position: relative; min-height: 100svh; padding: 38svh 0 var(--rise); }
.tier--short { min-height: 70svh; padding-top: 24svh; }
.tier__in { width: var(--tube); margin: 0 auto; padding: 0 var(--gutter); }
@media (min-width: 1024px) {
  .tier__in { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: 24px; }
  .tier__in > * { grid-column: 6 / 13; }
  .tier--wide .tier__in > * { grid-column: 3 / 13; }
  .tier--ground .tier__in > * { grid-column: 1 / -1; }
}

.display { font-family: var(--f-display); font-weight: 800; font-size: var(--t-display); line-height: .88; letter-spacing: .005em; text-transform: uppercase; }
.h1 { font-family: var(--f-display); font-weight: 700; font-size: var(--t-h1); line-height: .9; letter-spacing: .01em; text-transform: uppercase; display: flex; flex-direction: column; gap: 12px; }
.h2 { font-family: var(--f-display); font-weight: 700; font-size: var(--t-h2); line-height: .98; letter-spacing: .01em; text-transform: uppercase; }
.h3 { font-family: var(--f-text); font-weight: 600; font-size: var(--t-h3); }
.h-mark { font-family: var(--f-mono); font-weight: 500; font-size: var(--t-meter); letter-spacing: .08em; color: var(--ring-soft); text-transform: uppercase; }
.lead { margin-top: 28px; max-width: 62ch; color: var(--fg-2); }
.lead--tight { margin-top: 16px; }
.link { color: var(--fg); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; text-decoration-color: var(--ring-soft); }
.link:hover { text-decoration-color: var(--fg); }
.mark { position: absolute; left: var(--gutter); top: calc(var(--head) + 18px); font-family: var(--f-mono); font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); }
.mark__m { font-size: 1.4em; color: var(--fg-2); }

/* reveal */
.rv { opacity: 0; transform: translateY(24px); transition: opacity .48s var(--ease), transform .48s var(--ease); }
.rv.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } }

/* ---------- кнопки ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  height: 52px; padding: 0 24px; border-radius: 6px; border: 1px solid transparent;
  font-weight: 600; font-size: 15px; letter-spacing: .02em; text-decoration: none; cursor: pointer;
  transition: background .18s, box-shadow .18s, border-color .18s, transform .18s;
  white-space: nowrap;
}
.btn--sm { height: 44px; padding: 0 18px; }
.btn--primary {
  background: var(--pink); color: var(--fg-on-pink);
  box-shadow: 0 0 0 1px var(--pink-deep), 0 8px 40px -8px var(--pink-glow);
}
.btn--primary:hover { background: var(--pink-deep); box-shadow: 0 0 0 1px var(--pink-deep), 0 10px 40px -8px var(--pink-glow); }
.btn--primary:active { box-shadow: 0 0 0 1px var(--pink-deep); transform: translateY(1px); }
.btn--primary:disabled { opacity: .6; cursor: default; }
.btn--ghost { background: transparent; color: var(--fg); border-color: oklch(0.97 0.006 240 / .28); }
.btn--ghost:hover { border-color: var(--ring-soft); box-shadow: inset 0 0 24px -12px var(--ring); }

/* ---------- 20 м hero ---------- */
.tier--hero { padding-top: calc(var(--head) + 14svh); }
.hero__window {
  position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none;
  clip-path: ellipse(48% 42% at 50% 46%);
}
.hero__window::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, oklch(0.13 0.012 250 / .25), oklch(0.13 0.012 250 / .78) 70%, oklch(0.13 0.012 250 / .95));
}
.hero__video { width: 100%; height: 100%; object-fit: cover; filter: saturate(.85) brightness(.8); }
.hero__ring {
  position: absolute; inset: 0; pointer-events: none;
}
.hero__in { position: relative; z-index: 1; }
.hero__sub { margin-top: 24px; color: var(--fg-2); max-width: 44ch; }
.hero__cta { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 12px; }
.hero__down {
  margin-top: 64px; display: inline-flex; align-items: center; gap: 8px; text-decoration: none;
  font-family: var(--f-mono); font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3);
}
.hero__down svg { transition: transform .3s var(--ease); }
.hero__down:hover svg { transform: translateY(4px); }
@media (min-width: 1024px) {
  .tier--hero .tier__in > * { grid-column: 1 / 9; }
  .hero__window { clip-path: ellipse(44% 44% at 66% 48%); }
}

/* ---------- 17 м ---------- */
.facts { margin-top: 40px; display: grid; gap: 16px; }
.facts li { display: grid; grid-template-columns: minmax(6ch, auto) 1fr; gap: 16px; align-items: baseline; padding: 14px 0; border-top: 1px solid var(--line); }
.facts__n { font-family: var(--f-mono); font-weight: 600; font-size: var(--t-h3); color: var(--fg); white-space: nowrap; }
.facts__t { color: var(--fg-2); }
.facts + .link { display: inline-block; margin-top: 28px; }

/* ---------- 14 м пакети ---------- */
.cats {
  margin-top: 32px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border-bottom: 1px solid var(--ink-3);
}
.cat {
  position: relative; display: flex; align-items: center; gap: 12px; padding: 12px 8px 14px 4px;
  background: none; border: 0; cursor: pointer; text-align: left; color: var(--fg-2);
}
.cat::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: transparent; transition: background .15s; }
.cat[aria-selected="true"] { color: var(--fg); }
.cat[aria-selected="true"]::after { background: var(--ring); }
.cat__img { width: 44px; height: 44px; flex: none; border-radius: 50%; overflow: hidden; border: 1px solid var(--line); background: var(--ink-2); }
.cat__img img { width: 100%; height: 100%; object-fit: cover; }
.cat__t { display: flex; flex-direction: column; line-height: 1.2; }
.cat__n { font-weight: 600; font-size: var(--t-small); }
.cat__s { font-family: var(--f-mono); font-size: .75rem; color: var(--fg-3); letter-spacing: .04em; }

.pkgs { margin-top: 28px; display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.pkg {
  position: relative; display: flex; flex-direction: column; gap: 14px; padding: 20px 20px 18px;
  background: var(--ink-2); border-radius: 10px; border-top: 1px solid var(--line);
  transition: outline-color .15s, transform .15s; outline: 1px solid transparent; outline-offset: 4px;
}
.pkg--popular { border-top: 2px solid var(--pink); }
.pkg--popular .pkg__n { color: var(--pink); }
.pkg.is-chosen { outline-color: var(--pink); transform: translateY(-2px); }
.pkg__n { font-family: var(--f-display); font-weight: 700; font-size: 1.7rem; text-transform: uppercase; letter-spacing: .02em; line-height: 1; }
.pkg__tag { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; color: var(--pink); }
.pkg__f { font-family: var(--f-mono); font-size: var(--t-small); color: var(--fg-2); }
.pkg__p { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-top: auto; }
.pkg__sale { font-family: var(--f-mono); font-weight: 600; font-size: var(--t-h2); line-height: 1; }
.pkg__old { font-family: var(--f-mono); color: var(--fg-3); text-decoration: line-through; text-decoration-thickness: 1.5px; }
.pkg .btn { width: 100%; }
.pkg.is-chosen .btn { border-color: var(--pink); }
.gift-line { margin-top: 28px; color: var(--fg-2); display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: baseline; }

/* ---------- 10 м безпека ---------- */
.feat { margin-top: 48px; display: grid; gap: 20px; }
.feat__img img { width: 100%; border-radius: 10px; border: 1px solid var(--line); }
.feat__n { font-size: var(--t-small); color: var(--fg-3); letter-spacing: .08em; }
.feat__body .h2 { margin-top: 10px; }
.feat__s { margin: 8px 0 14px; font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--ring-soft); }
.feat__body > p:last-child { color: var(--fg-2); max-width: 52ch; }
@media (min-width: 800px) {
  .feat { grid-template-columns: 7fr 5fr; align-items: center; gap: 40px; margin-top: 64px; }
  .feat--rev .feat__img { order: 2; }
}

/* ---------- 8 м цифри ---------- */
.nums { margin-top: 32px; display: grid; gap: 28px; border-top: 1px solid var(--net); }
.nums__i { padding-top: 20px; }
.nums__i dt { display: flex; flex-direction: column; gap: 6px; }
.nums__v { font-family: var(--f-display); font-weight: 800; font-size: clamp(2.6rem, 1rem + 5vw, 5.6rem); line-height: 1; letter-spacing: .01em; white-space: nowrap; }
.nums__k { font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--ring-soft); }
.nums__i dd { margin-top: 12px; color: var(--fg-2); font-size: var(--t-small); max-width: 32ch; }
.nums__note { margin-top: 32px; color: var(--fg-3); font-size: var(--t-small); letter-spacing: .04em; }
@media (min-width: 800px) {
  .nums { grid-template-columns: repeat(3, 1fr); gap: 32px; }
  .nums__i + .nums__i { border-left: 1px solid var(--net); padding-left: 24px; }
}

/* ---------- 6 м галерея ---------- */
.gal { margin-top: 32px; position: relative; }
.gal__strip {
  display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
  padding: 0 max(var(--gutter), calc((100vw - var(--tube)) / 2 + var(--gutter))) 12px;
}
.gal__strip::-webkit-scrollbar { display: none; }
.gal__strip li { flex: none; scroll-snap-align: start; }
.gal__i { display: block; height: clamp(240px, 42vh, 520px); padding: 0; border: 1px solid var(--line); background: var(--ink-2); border-radius: 10px; overflow: hidden; cursor: zoom-in; }
.gal__i img { height: 100%; width: auto; object-fit: cover; transition: transform .4s var(--ease); }
.gal__i:hover img { transform: scale(1.03); }
.gal__bar { margin: 4px auto 0; width: var(--tube); padding: 0 var(--gutter); }
.gal__bar span { display: block; height: 1px; background: var(--ring-soft); width: 10%; transition: width .1s linear; }
.gal + .tier__in { margin-top: 24px; }

/* ---------- 3 м FAQ ---------- */
.faq { margin-top: 32px; border-top: 1px solid var(--ink-3); }
.faq details { border-bottom: 1px solid var(--ink-3); }
.faq summary {
  display: flex; justify-content: space-between; align-items: baseline; gap: 20px; cursor: pointer; list-style: none;
  padding: 18px 0; font-weight: 600; font-size: var(--t-h3); color: var(--fg-2); transition: color .15s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq details[open] summary, .faq summary:hover { color: var(--fg); }
.faq__x::before { content: '+'; font-size: 1.2em; color: var(--fg-3); }
.faq details[open] .faq__x::before { content: '−'; color: var(--fg); }
.faq details p { padding: 0 0 22px; color: var(--fg-2); max-width: 62ch; }
.faq__foot { margin-top: 32px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; color: var(--fg-2); }

/* ---------- 0 м приземлення ---------- */
.tier--ground { padding-bottom: 0; }
.tier--ground::before {
  content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    repeating-linear-gradient(0deg, var(--net) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, var(--net) 0 1px, transparent 1px 32px);
  -webkit-mask-image: radial-gradient(60% 55% at 50% 60%, #000 20%, transparent 100%);
  mask-image: radial-gradient(60% 55% at 50% 60%, #000 20%, transparent 100%);
  opacity: .8;
}
.land { display: grid; gap: 48px; }
@media (min-width: 1024px) {
  .tier--ground .land { grid-template-columns: repeat(12, 1fr); }
  .land__form { grid-column: 1 / 8; }
  .land__contacts { grid-column: 9 / 13; padding-top: 12px; }
}

.form { margin-top: 32px; display: grid; gap: 22px; }
.f-group { border: 0; padding: 0; margin: 0; min-width: 0; }
.f-group--half { max-width: 240px; }
.f-row { display: grid; gap: 22px; }
@media (min-width: 640px) { .f-row { grid-template-columns: 1fr 1fr; } }
.f-label { display: block; margin-bottom: 8px; font-family: var(--f-mono); font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); padding: 0; }
.f-label__hint { text-transform: none; letter-spacing: 0; }
.f-in {
  width: 100%; min-height: 48px; padding: 10px 14px; background: var(--ink-2); color: var(--fg);
  border: 0; border-bottom: 1px solid var(--ink-3); border-radius: 6px 6px 0 0; font: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.f-in::placeholder { color: var(--fg-3); }
.f-in:focus { outline: none; border-bottom: 2px solid var(--pink); box-shadow: 0 8px 24px -12px var(--pink-glow); }
.f-in[aria-invalid="true"] { border-bottom-color: var(--err); }
select.f-in { appearance: none; -webkit-appearance: none; padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23a3a8b3' stroke-width='1.5'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; }
select.f-in option { background: var(--ink-2); color: var(--fg); }
textarea.f-in { resize: vertical; min-height: 88px; }
input[type="date"].f-in { color-scheme: dark; }
.f-note { margin-top: 8px; font-size: var(--t-small); color: var(--fg-3); }
.f-note--gift { margin-top: -6px; color: var(--fg-2); }
.f-err { margin-top: 8px; font-family: var(--f-mono); font-size: var(--t-small); color: var(--err); }
.f-err--top { margin: 0; }

.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; border-bottom: 1px solid var(--ink-3); font-family: var(--f-mono); font-size: var(--t-small); }
.seg__i { position: relative; display: flex; align-items: center; justify-content: center; padding: 12px 6px; cursor: pointer; color: var(--fg-3); text-align: center; letter-spacing: .04em; }
.seg__i input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg__i::after { content: ''; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: transparent; transition: background .15s; }
.seg__i:has(input:checked) { color: var(--fg); }
.seg__i:has(input:checked)::after { background: var(--ring); }
.seg__i:has(input:focus-visible) { outline: 2px solid var(--pink); outline-offset: -2px; border-radius: 4px; }
.seg--4 .seg__i { padding: 12px 2px; font-size: .8rem; }

.step { display: grid; grid-template-columns: 48px 1fr 48px; }
.step__b { background: var(--ink-2); border: 0; border-bottom: 1px solid var(--ink-3); font-family: var(--f-mono); font-size: 1.2rem; cursor: pointer; color: var(--fg-2); }
.step__b:first-child { border-radius: 6px 0 0 0; }
.step__b:last-child { border-radius: 0 6px 0 0; }
.step__b:hover { color: var(--fg); }
.step__in { text-align: center; border-radius: 0; font-family: var(--f-mono); -moz-appearance: textfield; }
.step__in::-webkit-inner-spin-button, .step__in::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

.slots { display: flex; flex-wrap: wrap; gap: 8px; max-height: 176px; overflow-y: auto; padding: 2px; }
.slot { position: relative; padding: 9px 12px; background: var(--ink-2); border-radius: 6px; border-bottom: 1px solid var(--ink-3); font-family: var(--f-mono); font-size: var(--t-small); color: var(--fg-2); cursor: pointer; }
.slot input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.slot:has(input:checked) { color: var(--fg); border-bottom: 2px solid var(--pink); }
.slot:has(input:focus-visible) { outline: 2px solid var(--pink); outline-offset: 2px; }

.check { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; color: var(--fg-2); font-size: var(--t-small); }
.check input { flex: none; width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--pink); }
.form__submit { width: 100%; }
@media (min-width: 640px) { .form__submit { width: 320px; } }

.ok { margin-top: 32px; padding: 28px 24px; background: var(--ink-2); border-radius: 10px; border-top: 1px solid var(--line); }
.ok__no { font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); }
.ok__no span:last-child { color: var(--fg); font-size: 1.3em; }
.ok .h2 { margin-top: 10px; }
.ok > p:not(.ok__no) { margin-top: 12px; color: var(--fg-2); }
.ok__act { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }

.ct { margin-top: 24px; display: grid; gap: 20px; }
.ct dt { font-size: var(--t-meter); letter-spacing: .08em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 4px; }
.ct dd { color: var(--fg-2); }

.foot { margin-top: 80px; padding: 28px 0 calc(28px + env(safe-area-inset-bottom)); border-top: 1px solid var(--ink-3); background: var(--ink-0); }
.foot__in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.foot__logo { height: 18px; width: auto; }
.foot__c { font-size: .8rem; color: var(--fg-3); }

/* ---------- sticky CTA (мобільний) ---------- */
.sticky {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 35;
  display: grid; grid-template-columns: 1fr auto; gap: 8px;
  padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom));
  background: oklch(0.13 0.012 250 / .8); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transform: translateY(100%); transition: transform .3s var(--ease);
}
.sticky.is-on { transform: none; }
.sticky__b { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
@media (min-width: 769px) { .sticky { display: none; } }

/* ---------- лайтбокс ---------- */
.lb { position: fixed; inset: 0; z-index: 60; background: oklch(0.13 0.012 250 / .96); display: grid; place-items: center; padding: 64px 16px; }
.lb__fig { max-width: min(1400px, 100%); max-height: 100%; display: grid; gap: 12px; justify-items: center; }
.lb__fig img { max-height: calc(100svh - 160px); width: auto; max-width: 100%; border-radius: 10px; border: 1px solid var(--line); }
.lb__fig figcaption { font-size: var(--t-small); color: var(--fg-3); text-align: center; }
.lb__x, .lb__nav { position: absolute; background: var(--ink-2); border: 1px solid var(--line); color: var(--fg-2); width: 48px; height: 48px; border-radius: 6px; display: grid; place-items: center; cursor: pointer; }
.lb__x:hover, .lb__nav:hover { color: var(--fg); border-color: var(--ring-soft); }
.lb__x { top: 16px; right: 16px; }
.lb__nav { top: 50%; transform: translateY(-50%); }
.lb__nav--prev { left: 12px; } .lb__nav--next { right: 12px; }
body.lb-open { overflow: hidden; }

/* ---------- мобільний 360–768 ---------- */
@media (max-width: 768px) {
  :root { --tube: calc(100vw - 32px); --gutter: 16px; --head: 56px; }
  .top { grid-template-columns: auto 1fr auto; gap: 10px; }
  .top__meter { justify-self: center; }
  .top__cta { display: none; }
  .tier { padding-top: 30svh; }
  .tier--hero { padding-top: calc(var(--head) + 10svh); }
  .hero__window { clip-path: ellipse(60% 40% at 50% 40%); }
  .hero__cta .btn { width: 100%; }
  .cats { display: flex; overflow-x: auto; scroll-snap-type: x proximity; scrollbar-width: none; margin-left: calc(var(--gutter) * -1); margin-right: calc(var(--gutter) * -1); padding: 0 var(--gutter); }
  .cats::-webkit-scrollbar { display: none; }
  .cat { flex: none; scroll-snap-align: start; padding-right: 16px; }
  .pkgs { grid-template-columns: 1fr; }
  .pkg--popular { order: -1; }
  .tube-css__flyer { width: 58vw; opacity: .55; }
  .f-row { grid-template-columns: 1fr; }
  .faq__foot .btn { width: 100%; }
  .foot__in { flex-direction: column; align-items: flex-start; }
  .tier--ground { padding-bottom: 72px; }
}
@media (max-width: 400px) {
  .seg--4 .seg__i { font-size: .72rem; letter-spacing: 0; }
  .btn { padding: 0 16px; }
}


/* ---------- [hidden] має перемагати display компонентів ---------- */
[hidden] { display: none !important; }

/* ---------- контент «на склі» труби ---------- */
.glass-sheen {
  position: fixed; inset: 0; z-index: 2; pointer-events: none;
  background:
    linear-gradient(105deg, transparent 0 38%, oklch(0.97 0.006 240 / .05) 41%, transparent 46%, transparent 62%, oklch(0.97 0.006 240 / .035) 64%, transparent 68%),
    linear-gradient(90deg, oklch(0.13 0.012 250 / .55), transparent 12%, transparent 88%, oklch(0.13 0.012 250 / .55));
}
.tier:not(.tier--hero) > .tier__in {
  background: oklch(0.18 0.014 250 / .42);
  -webkit-backdrop-filter: blur(14px) saturate(1.15); backdrop-filter: blur(14px) saturate(1.15);
  border: 1px solid oklch(0.97 0.006 240 / .10);
  border-top-color: oklch(0.97 0.006 240 / .22);
  border-radius: 18px;
  padding-top: clamp(24px, 4vw, 44px); padding-bottom: clamp(24px, 4vw, 44px);
  box-shadow: inset 0 1px 0 oklch(0.97 0.006 240 / .08), 0 30px 80px -40px oklch(0 0 0 / .8);
}
.tier--hero .hero__in { padding-top: 24px; }
.hero__window { opacity: .55; mix-blend-mode: screen; }
.gal { position: relative; z-index: 1; }
.pkg { background: oklch(0.24 0.016 245 / .55); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.ok, .step__b, .f-in, .slot { background-color: oklch(0.24 0.016 245 / .7); }
.tier--ground > .tier__in { background: oklch(0.18 0.014 250 / .6); }
.foot { position: relative; z-index: 1; }
@media (max-width: 768px) {
  .tier:not(.tier--hero) > .tier__in { border-radius: 14px; }
}

/* ---------- відео hero живе всередині 3D-труби (VideoTexture); сам елемент лишається в кадрі 2×2 px, щоб браузер не ставив його на паузу ---------- */
.hero__window { position: fixed; left: 0; top: 0; width: 2px; height: 2px; opacity: .01; clip-path: none; mix-blend-mode: normal; pointer-events: none; overflow: hidden; z-index: 0; }
.hero__window::after { display: none; }
body.no-webgl .hero__window { position: absolute; inset: 0; width: auto; height: auto; opacity: .55; mix-blend-mode: screen; clip-path: ellipse(44% 44% at 66% 48%); z-index: 0; }
body.no-webgl .hero__window::after { display: block; }
body.edit-mode-active .hero__window { position: absolute; inset: 0; width: auto; height: auto; opacity: .35; z-index: 0; }


/* ---------- v4: панелі з текстом вужчі — летун живе у вільному склі ліворуч ---------- */
@media (min-width: 1024px) {
  .tier:not(.tier--hero):not(.tier--wide) > .tier__in { width: calc(var(--tube) * .56); margin-left: calc(50% + var(--tube) * .5 - var(--tube) * .56); margin-right: auto; grid-template-columns: repeat(7, 1fr); }
  .tier:not(.tier--hero):not(.tier--wide) > .tier__in > * { grid-column: 1 / -1; }
}
.tier:not(.tier--hero) > .tier__in { background: oklch(0.17 0.014 250 / .58); }
.tier--ground > .tier__in { background: oklch(0.17 0.014 250 / .7); }

/* ---------- v5: цифри труби у вузькій панелі — рядками, без обрізання ---------- */
@media (min-width: 1024px) {
  .tier:not(.tier--wide) .nums { grid-template-columns: 1fr; gap: 10px; }
  .tier:not(.tier--wide) .nums__i { display: grid; grid-template-columns: minmax(9ch, 44%) 1fr; gap: 6px 22px; align-items: baseline; padding-top: 16px; border-top: 1px solid var(--line); }
  .tier:not(.tier--wide) .nums__i dd { max-width: none; }
  .tier:not(.tier--wide) .nums__i:first-child { border-top: 0; }
  .tier:not(.tier--wide) .nums__i dd { margin-top: 0; }
  .tier:not(.tier--wide) .nums__v { font-size: clamp(2rem, 1rem + 2.6vw, 3.4rem); }
}

/* ---------- v7: поліровка — скляний кант панелей, кнопки, картки ---------- */
.tier:not(.tier--hero) > .tier__in { border-top-color: oklch(0.82 0.144 215 / .38); box-shadow: inset 0 1px 0 oklch(0.82 0.144 215 / .22), inset 0 -1px 0 oklch(0.97 0.006 240 / .05), 0 30px 80px -40px oklch(0 0 0 / .8); }
.btn { transition: background .18s, box-shadow .18s, border-color .18s, transform .18s, color .18s; }
.btn--primary:hover { transform: translateY(-1px); box-shadow: 0 0 0 1px var(--pink-deep), 0 14px 44px -10px var(--pink-glow); }
.btn--ghost { border-color: oklch(0.82 0.144 215 / .35); }
.btn--ghost:hover { border-color: var(--ring); color: var(--fg); box-shadow: inset 0 0 28px -14px var(--ring), 0 0 0 1px oklch(0.82 0.144 215 / .25); transform: translateY(-1px); }
.pkg { transition: outline-color .18s, transform .18s, box-shadow .18s; }
.pkg:hover { transform: translateY(-3px); outline-color: oklch(0.82 0.144 215 / .45); box-shadow: 0 24px 50px -30px oklch(0.82 0.144 215 / .55); }
.hero__sub { font-size: var(--t-body); letter-spacing: .01em; }
.h-mark { font-size: .82rem; }
.lead { font-size: var(--t-body); }

/* v10: читабельність тексту hero поверх відео-вікна */
.tier--hero .display, .hero__sub { text-shadow: 0 2px 24px oklch(0.13 0.012 250 / .75), 0 0 2px oklch(0.13 0.012 250 / .6); }

/* v11: ціна в картці — один рядок, кегль під ширину картки */
.pkg__sale { font-size: clamp(1.5rem, 1rem + 1.5vw, 2.3rem); white-space: nowrap; letter-spacing: -.01em; }
.pkg__old { white-space: nowrap; }
.pkg__p { gap: 10px; }

/* ---------- v12: форма — поле дати в межах панелі (iOS), однакова ширина полів ---------- */
.f-in--date { -webkit-appearance: none; appearance: none; display: block; width: 100%; min-width: 0; max-width: 100%; box-sizing: border-box; position: relative; text-align: left; line-height: 1.4; color: var(--fg); }
.f-in--date::-webkit-date-and-time-value { text-align: left; min-height: 1.4em; }
.f-in--date::-webkit-calendar-picker-indicator { filter: invert(1); opacity: .55; cursor: pointer; }
.f-in--date:not(.has-value)::before { content: attr(data-ph); color: var(--fg-3); position: absolute; left: 14px; top: 50%; transform: translateY(-50%); pointer-events: none; }
.f-in--date:not(.has-value)::-webkit-datetime-edit { color: transparent; }
.f-in--date:not(.has-value):focus::-webkit-datetime-edit { color: var(--fg); }
.f-in--date:not(.has-value):focus::before { display: none; }
select.f-in { -webkit-appearance: none; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%239aa4bb' stroke-width='1.6'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.f-group, .f-row, .f-row > * { min-width: 0; }
@media (max-width: 768px) {
  .f-group--half { max-width: none; }
  .form { gap: 18px; }
}

/* ---------- v13: зони натискання на мобільному ≥ 44px, sticky-кнопка без вилізання, дрібниці ---------- */
.top__logo { display: inline-flex; align-items: center; min-height: 44px; padding: 0 6px; margin-left: -6px; }
.lang__b { min-width: 40px; min-height: 40px; padding: 6px 8px; }
.hero__down { padding: 12px 0; min-height: 44px; }
.ct dd .link, .foot__c .link, .gal + .tier__in .link, .faq__foot .link { display: inline-block; padding: 8px 0; margin: -8px 0; min-height: 44px; line-height: 28px; }
.sticky__b span { display: block; max-width: 100%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.step__b { min-width: 48px; }

/* ---------- v14: загальна перевірка ---------- */
/* svh без підтримки → vh */
@supports not (height: 1svh) {
  .tier { min-height: 100vh; padding-top: 38vh; }
  .tier--short { min-height: 70vh; padding-top: 24vh; }
  .tier--hero { padding-top: calc(var(--head) + 14vh); }
  .lb__fig img { max-height: calc(100vh - 160px); }
  @media (max-width: 768px) { .tier { padding-top: 30vh; } .tier--hero { padding-top: calc(var(--head) + 10vh); } }
}
/* лайтбокс: без прокрутки сторінки під ним */
.lb { touch-action: none; overscroll-behavior: contain; }
main:focus { outline: none; }
/* мобільний: без розмиття скла (дорого для GPU) — щільніший фон замість blur */
@media (max-width: 768px) {
  .tier:not(.tier--hero) > .tier__in, .pkg, .top.is-solid, .sticky { -webkit-backdrop-filter: none; backdrop-filter: none; }
  .tier:not(.tier--hero) > .tier__in { background: oklch(0.16 0.014 248 / .9); }
  .pkg { background: oklch(0.24 0.016 245 / .92); }
  .top.is-solid { background: oklch(0.13 0.012 250 / .92); }
  .sticky { background: oklch(0.13 0.012 250 / .96); }
}
/* картки пакетів на десктопі теж без blur: вони лежать на вже розмитій панелі */
@media (min-width: 769px) { .pkg { -webkit-backdrop-filter: none; backdrop-filter: none; background: oklch(0.24 0.016 245 / .72); } }

/* ---------- v15: sticky-кнопка на телефоні — назва пакета дрібно над ціною, ціна ніколи не обрізається ---------- */
.sticky__b { line-height: 1.15; }
.sticky__b small { display: block; font-size: .64em; font-weight: 600; letter-spacing: .08em; opacity: .85; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- v16: статичний фолбек (без WebGL / reduced-motion): летун праворуч, не лізе під заголовок ---------- */
@media (min-width: 769px) { .tube-css__flyer { left: auto; right: 5%; bottom: 10%; width: min(34vw, 380px); } }