/* I SING Room — the public site (site/*.html inside site/layout.html).
   Black and white, hairlines and numbered sections; tall condensed capitals (Oswald) as at I SING Academy,
   a book serif for the text. */
:root {
  --ink: #0b0b0b;
  --paper: #ffffff;
  --paper-2: #f3f3f1;
  --g1: #5f5f5f;
  --g2: #8f8f8f;
  --line: #e2e2e2;
  --line-d: rgba(255, 255, 255, .16);
  --sans: "Oswald", "Arial Narrow", Arial, sans-serif;
  --serif: "PT Serif", Georgia, "Times New Roman", serif;
  --gutter: clamp(18px, 4vw, 56px);
  --max: 1320px;
  --head: 64px;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--head) + 12px); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 15.5px/1.62 var(--serif); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }
img, svg { display: block; }
[hidden] { display: none !important; }
:focus-visible { outline: 1.5px solid currentColor; outline-offset: 3px; }
::selection { background: var(--ink); color: var(--paper); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.label { font: 500 12px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .18em; color: var(--g1); }
.dark .label { color: rgba(255, 255, 255, .55); }
.dark { position: relative; background: var(--ink); color: var(--paper); isolation: isolate; }
.dark::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--grain); opacity: .09; pointer-events: none; }

/* ---------- buttons ---------- */
.btn {
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  height: 48px; padding: 0 24px; border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
  font: 500 12.5px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; white-space: nowrap;
  --fill: var(--paper); --fill-text: var(--ink);
  transition: color .45s cubic-bezier(.2, .8, .2, 1), border-color .3s, transform .35s cubic-bezier(.2, .8, .2, 1);
}
/* the fill sweeps in from the left on hover and out to the right */
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--fill);
  transform: scaleX(0); transform-origin: right; transition: transform .5s cubic-bezier(.2, .8, .2, 1);
}
.btn:hover { color: var(--fill-text); }
.btn:hover::before { transform: scaleX(1); transform-origin: left; }
.btn .arr { display: inline-block; transition: transform .35s cubic-bezier(.2, .8, .2, 1); }
.btn:hover .arr { transform: translateX(5px); }
.btn:active { transform: scale(.97); }
.btn.line { background: transparent; color: var(--ink); --fill: var(--ink); --fill-text: var(--paper); }
.dark .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); --fill: var(--ink); --fill-text: var(--paper); }
.dark .btn.line { background: transparent; color: var(--paper); border-color: rgba(255, 255, 255, .55); --fill: var(--paper); --fill-text: var(--ink); }
.dark .btn.line:hover { border-color: var(--paper); }
.btn.small { height: 38px; padding: 0 16px; font-size: 11.5px; }
.link-arrow { display: inline-flex; gap: 10px; align-items: center; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; border-bottom: 1px solid currentColor; padding-bottom: 5px; }
.link-arrow .arr { transition: transform .25s; }
.link-arrow:hover .arr { transform: translateX(4px); }

/* ---------- header: the page tabs ---------- */
.header { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .96); -webkit-backdrop-filter: saturate(1.4) blur(12px); backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid var(--ink); padding-top: env(safe-area-inset-top); }
.header-in { display: flex; align-items: stretch; height: var(--head); }
.brand { display: flex; align-items: center; padding-right: 26px; border-right: 1px solid var(--line); }
.brand img { height: 32px; width: auto; }
.tabs { display: flex; align-items: stretch; margin-right: auto; }
.tabs a {
  position: relative; display: flex; align-items: center; padding: 0 20px; border-right: 1px solid var(--line);
  font: 500 11.5px/1 var(--sans); text-transform: uppercase; letter-spacing: .13em; color: var(--g1);
  transition: color .2s, background .2s;
}
.tabs a:hover { color: var(--ink); background: var(--paper-2); }
.tabs a[aria-current="page"] { background: var(--ink); color: var(--paper); }
.tabs .tabs-login { display: none; }
/* right side of the header: languages, «Вхід», «Реєстрація» */
.head-actions { display: flex; align-items: center; gap: 8px; margin-left: 20px; }
.lang { position: relative; display: flex; margin-right: 8px; border: 1px solid var(--line); }
.lang button { width: 34px; height: 30px; font: 500 11px/1 var(--sans); letter-spacing: .1em; color: var(--g2); transition: color .25s, background .25s; }
.lang button + button { border-left: 1px solid var(--line); }
.lang button:hover { color: var(--ink); }
.lang button.on { background: var(--ink); color: var(--paper); }
.burger { display: none; width: 48px; margin-left: auto; place-items: center; }
.burger span, .burger span::before, .burger span::after { display: block; width: 24px; height: 1.5px; background: var(--ink); position: relative; transition: transform .25s, background .25s; }
.burger span::before, .burger span::after { content: ""; position: absolute; left: 0; }
.burger span::before { top: -7px; } .burger span::after { top: 7px; }
.menu-open .burger span { background: transparent; }
.menu-open .burger span::before { transform: translateY(7px) rotate(45deg); }
.menu-open .burger span::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- page head (every page but home) ---------- */
.page-head { padding: clamp(44px, 6vw, 84px) 0 0; }
.page-head .meta { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--ink); }
.page-head h1 { margin: clamp(28px, 4vw, 48px) 0 0; font: 700 clamp(46px, 7.6vw, 120px)/.86 var(--sans); text-transform: uppercase; letter-spacing: -.035em; }
.page-head .lead-row { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: clamp(30px, 4vw, 54px); padding: 26px 0 clamp(40px, 5vw, 70px); border-top: 1px solid var(--line); }
.page-head .lead { margin: 0; font-size: clamp(16px, 1.3vw, 18px); line-height: 1.55; }
/* Можливості: «Вокал / Фортепіано» — the switch on the left, what the module holds on the right */
.modules .switch { display: grid; max-width: 340px; margin: 18px 0 0; }
.modules .lead { margin-bottom: 22px; }
.mod-list { margin: 0; padding: 0; list-style: none; }
.mod-list li { display: grid; gap: 5px; padding: 15px 0; border-top: 1px solid var(--line); }
.mod-list li:last-child { border-bottom: 1px solid var(--line); }
.mod-list b { font: 600 15px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .04em; }
.mod-list span { font-size: 14.5px; line-height: 1.5; color: var(--g1); }

.sec { padding: clamp(56px, 7vw, 100px) 0; }
.sec.tight-top { padding-top: 0; }
.sec-top { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; align-items: start; margin-bottom: clamp(36px, 5vw, 64px); }
.sec-top h2 { margin: 0; font: 600 clamp(26px, 2.8vw, 40px)/1 var(--sans); text-transform: uppercase; letter-spacing: -.01em; }
.sec-top p { margin: 0; max-width: 640px; color: var(--g1); }
.dark .sec-top p { color: rgba(255, 255, 255, .65); }

/* ---------- HOME ---------- */
.hero { padding: 0 0 clamp(60px, 7vw, 100px); }
.hero-meta { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
.hero-meta span { padding: 16px 0; }
.hero-meta span:nth-child(2) { text-align: center; }
.hero-meta span:last-child { text-align: right; }
.hero-word { margin: clamp(20px, 3vw, 40px) 0 0; font: 700 clamp(64px, 13vw, 200px)/.82 var(--sans); text-transform: uppercase; letter-spacing: -.045em; white-space: nowrap; }
.hero-word .out { color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
.hero-grid { display: grid; grid-template-columns: 5fr 7fr; gap: clamp(30px, 5vw, 80px); margin-top: clamp(36px, 5vw, 64px); padding-top: 28px; border-top: 1px solid var(--ink); align-items: start; }
.hero-lead { margin: 0 0 28px; font-size: clamp(17px, 1.4vw, 19px); line-height: 1.5; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin: 20px 0 0; font-size: 13.5px; color: var(--g1); }
.hero-note b { color: var(--ink); }
/* the live demo: the real room in a frame (wide screens; smaller ones keep the picture and open /demo on its own) */
.hero-demo { display: none; }
@media (min-width: 1041px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-grid .mock-wrap, .mock-go { display: none; }
  .hero-text { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: end; }
  .hero-text .hero-lead { margin: 0; max-width: 640px; }
  .hero-cta { justify-self: end; max-width: 430px; }
  .hero-demo { display: block; margin-top: clamp(34px, 4vw, 52px); border: 1px solid var(--ink); background: var(--paper); box-shadow: 14px 14px 0 var(--ink); }
}
.demo-bar { display: flex; align-items: center; gap: 22px; padding: 12px 18px; border-bottom: 1px solid var(--ink); font-size: 14px; line-height: 1.4; }
.demo-live { display: inline-flex; align-items: center; gap: 9px; flex: none; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .16em; }
.demo-live i { width: 8px; height: 8px; border-radius: 50%; background: var(--ink); animation: chkPulse 1.6s ease-in-out infinite; }
.demo-hint { flex: 1; color: var(--g1); }
.demo-frame { position: relative; height: clamp(600px, 54vw, 780px); background: var(--paper-2); overflow: hidden; }
.demo-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; opacity: 0; transition: opacity .6s; }
.demo-frame.ready iframe { opacity: 1; }
.demo-wait { position: absolute; inset: 0; display: grid; place-items: center; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .16em; color: var(--g2); animation: chkPulse 1.6s ease-in-out infinite; }
.demo-frame.ready .demo-wait { display: none; }

/* the room, drawn in black and white */
.room-mock { border: 1px solid var(--ink); background: var(--paper); padding: 12px; box-shadow: 14px 14px 0 var(--ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
.mock-top { display: flex; align-items: center; gap: 6px; padding: 0 2px 10px; border-bottom: 1px solid var(--line); margin-bottom: 10px; }
.mock-top i { width: 9px; height: 9px; border-radius: 50%; border: 1px solid var(--ink); }
.mock-top span { margin-left: auto; font: 500 11px/1 var(--sans); letter-spacing: .12em; color: var(--g1); }
.mock-tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mock-tile { position: relative; aspect-ratio: 16 / 10; display: grid; place-items: center; background: #1c1c1c; overflow: hidden; }
.mock-tile::before { content: ""; position: absolute; inset: 0; background: var(--grain); opacity: .14; }
.mock-av { position: relative; width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; font: 500 22px/1 var(--sans); color: var(--ink); background: #f2f2f2; }
.mock-tile.t .mock-av { background: #3a3a3a; color: #fff; box-shadow: 0 0 0 1px rgba(255, 255, 255, .25); }
.mock-tag { position: absolute; left: 8px; top: 8px; padding: 3px 8px; background: #fff; color: #111; font: 500 10.5px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .1em; }
.mock-sing { position: absolute; right: 9px; bottom: 9px; display: flex; gap: 2px; align-items: flex-end; height: 16px; }
.mock-sing i { width: 3px; background: #fff; animation: eq 1s ease-in-out infinite; }
.mock-sing i:nth-child(2) { animation-delay: -.3s; } .mock-sing i:nth-child(3) { animation-delay: -.6s; }
@keyframes eq { 0%, 100% { height: 4px; } 50% { height: 16px; } }
.mock-player { display: flex; align-items: center; gap: 10px; margin-top: 10px; padding: 9px 10px; border: 1px solid var(--line); }
.mock-play { width: 26px; height: 26px; border-radius: 50%; background: var(--ink); display: grid; place-items: center; flex: none; }
.mock-play::before { content: ""; margin-left: 2px; border: 5px solid transparent; border-left: 8px solid #fff; border-right: 0; }
.mock-track { flex: none; font-size: 11.5px; font-weight: 600; }
.mock-wave { flex: 1; height: 22px; display: flex; align-items: center; gap: 2px; min-width: 0; }
.mock-wave i { flex: 1; background: #d4d4d4; height: var(--h); }
.mock-wave i.on { background: var(--ink); }
.mock-sync { flex: none; font: 500 10px/1 var(--sans); text-transform: uppercase; letter-spacing: .1em; padding: 4px 7px; border: 1px solid var(--ink); }
.mock-keys { position: relative; height: 88px; margin-top: 10px; display: flex; border-top: 4px solid var(--ink); }
.mock-keys b { flex: 1; background: #fff; border-right: 1px solid #cfcfcf; border-bottom: 1px solid #cfcfcf; }
.mock-keys b:first-child { border-left: 1px solid #cfcfcf; }
.mock-keys b.tch { animation: pressT 3.2s infinite; }
.mock-keys b.stu { animation: pressS 3.2s infinite; animation-delay: 1.6s; }
@keyframes pressT { 0%, 30% { background: #4a4a4a; } 40%, 100% { background: #fff; } }
@keyframes pressS { 0%, 30% { background: repeating-linear-gradient(135deg, #fff 0 3px, #9a9a9a 3px 5px); } 40%, 100% { background: #fff; } }
.mock-keys u { position: absolute; top: 0; width: 5.2%; height: 58%; margin-left: -2.6%; background: var(--ink); }
.mock-legend { display: flex; gap: 18px; margin-top: 10px; font: 500 10.5px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; color: var(--g1); }
.mock-legend i { display: inline-block; width: 12px; height: 12px; margin-right: 7px; vertical-align: -2px; border: 1px solid var(--ink); }
.mock-legend .t { background: #4a4a4a; }
.mock-legend .s { background: repeating-linear-gradient(135deg, #fff 0 3px, #9a9a9a 3px 5px); }

.facts { display: grid; grid-template-columns: repeat(4, 1fr); }
.fact { padding: clamp(34px, 4vw, 56px) 28px clamp(30px, 3vw, 44px); border-left: 1px solid var(--line-d); }
.fact:first-child { border-left: 0; padding-left: 0; }
.fact b { display: block; font: 300 clamp(42px, 4.6vw, 68px)/.9 var(--sans); letter-spacing: -.03em; }
.fact span { display: block; margin-top: 14px; max-width: 220px; font-size: 13.5px; line-height: 1.45; color: rgba(255, 255, 255, .65); }

.manifest { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; }
.manifest h2 { margin: 0; font: 600 clamp(28px, 3vw, 44px)/1 var(--sans); text-transform: uppercase; letter-spacing: -.015em; }
.manifest p { margin: 0 0 18px; max-width: 660px; font-size: 16.5px; }
.manifest p:first-child::first-letter { float: left; margin: 6px 12px 0 0; font: 600 60px/.8 var(--sans); }

.index { border-top: 1px solid var(--ink); }
.index a {
  display: grid; grid-template-columns: 90px 1.1fr 1.4fr 40px; gap: 24px; align-items: center;
  padding: 24px 0; border-bottom: 1px solid var(--line);
}
.index a { position: relative; isolation: isolate; }
.index a::before { content: ""; position: absolute; inset: 0 calc(-1 * var(--gutter)); z-index: -1; background: var(--ink); transform: scaleY(0); transform-origin: bottom; transition: transform .55s cubic-bezier(.2, .8, .2, 1); }
.index a > * { transition: color .4s, transform .5s cubic-bezier(.2, .8, .2, 1); }
.index a:hover { color: var(--paper); }
.index a:hover::before { transform: scaleY(1); transform-origin: top; }
.index a:hover h3 { transform: translateX(14px); }
.index .n { font: 500 13px/1 var(--sans); letter-spacing: .14em; color: var(--g2); }
.index h3 { margin: 0; font: 600 clamp(24px, 2.6vw, 36px)/1 var(--sans); text-transform: uppercase; letter-spacing: -.01em; }
.index p { margin: 0; color: var(--g1); font-size: 15px; }
.index a:hover p, .index a:hover .n { color: rgba(255, 255, 255, .7); }
.index .go { justify-self: end; font: 400 22px/1 var(--sans); transition: transform .25s; }
.index a:hover .go { transform: translateX(6px) rotate(-45deg); }

.cta { padding: clamp(60px, 8vw, 110px) 0; }
.cta-in { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: end; }
.cta h2 { margin: 14px 0 0; font: 700 clamp(40px, 5.8vw, 88px)/.88 var(--sans); text-transform: uppercase; letter-spacing: -.035em; }
.cta p { margin: 0 0 26px; max-width: 460px; color: rgba(255, 255, 255, .7); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- FEATURES ---------- */
.feat-list { border-top: 1px solid var(--ink); }
.feat { display: grid; grid-template-columns: 90px 1fr 1.3fr 56px; gap: 28px; align-items: start; padding: clamp(24px, 2.6vw, 34px) 0; border-bottom: 1px solid var(--line); }
.feat .n { padding-top: 8px; font: 500 13px/1 var(--sans); letter-spacing: .14em; color: var(--g2); }
.feat h3 { margin: 0; font: 600 clamp(21px, 2vw, 28px)/1.05 var(--sans); text-transform: uppercase; letter-spacing: -.005em; }
.feat p { margin: 0; color: var(--g1); }
.feat svg { width: 38px; height: 38px; justify-self: end; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tags span { padding: 6px 11px; border: 1px solid var(--ink); font: 500 11.5px/1 var(--sans); text-transform: uppercase; letter-spacing: .1em; }
.dark .tags span { border-color: rgba(255, 255, 255, .5); }

.spotlight { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(30px, 5vw, 80px); align-items: center; }
.spotlight h2 { margin: 16px 0 18px; font: 700 clamp(34px, 4.2vw, 62px)/.92 var(--sans); text-transform: uppercase; letter-spacing: -.03em; }
.spotlight p { margin: 0; color: rgba(255, 255, 255, .7); max-width: 520px; }
.pitch-demo { position: relative; height: 240px; background: #fff; overflow: hidden; }
.pitch-demo::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(to bottom, transparent 0 32px, #ececec 32px 33px); }
.pitch-demo svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.pitch-demo .target { stroke: #d9d9d9; stroke-width: 12; fill: none; }
.pitch-demo .sung { stroke: var(--ink); stroke-width: 2.5; fill: none; stroke-linecap: round; stroke-dasharray: 900; stroke-dashoffset: 900; }
.pitch-demo.in-view .sung { animation: draw 3.4s ease-out forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
.pitch-chip { position: absolute; right: 12px; top: 12px; padding: 6px 10px; background: var(--ink); color: #fff; font: 500 11px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; }

/* ---------- AUDIENCE ---------- */
.aud-grid { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--ink); border-left: 1px solid var(--line); }
.aud { display: flex; flex-direction: column; min-height: 340px; padding: clamp(26px, 3vw, 42px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.aud h2 { margin: 18px 0 16px; font: 700 clamp(32px, 3.6vw, 52px)/.92 var(--sans); text-transform: uppercase; letter-spacing: -.03em; }
.aud > p { margin: 0; max-width: 480px; color: var(--g1); }
.aud ul { list-style: none; margin: auto 0 0; padding: 30px 0 0; }
.aud li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-top: 1px solid var(--line); font-size: 14.5px; }
.aud li::after { content: "✓"; font: 500 14px/1.5 var(--sans); }
.aud.dark { border-color: var(--ink); }
.aud.dark > p { color: rgba(255, 255, 255, .7); }
.aud.dark li { border-color: var(--line-d); }

/* ---------- HOW ---------- */
.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; border-top: 1px solid var(--ink); }
.step { counter-increment: s; display: grid; grid-template-columns: 1fr 1.2fr 1.4fr; gap: 30px; align-items: start; padding: clamp(28px, 3.4vw, 46px) 0; border-bottom: 1px solid var(--line); }
.step::before { content: counter(s, decimal-leading-zero); font: 300 clamp(52px, 6vw, 96px)/.8 var(--sans); letter-spacing: -.04em; }
.step h3 { margin: 6px 0 0; font: 600 clamp(21px, 2vw, 28px)/1.05 var(--sans); text-transform: uppercase; }
.step p { margin: 6px 0 0; color: var(--g1); }
.link-demo { display: inline-block; margin-top: 16px; padding: 10px 14px; border: 1px dashed var(--ink); font: 13px/1.3 ui-monospace, "SF Mono", Menlo, monospace; }
.needs { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-d); }
.need { padding: 34px 28px 10px; border-left: 1px solid var(--line-d); }
.need:first-child { border-left: 0; padding-left: 0; }
.need h3 { margin: 14px 0 8px; font: 600 19px/1.1 var(--sans); text-transform: uppercase; }
.need p { margin: 0; font-size: 14.5px; color: rgba(255, 255, 255, .65); }
.need-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: clamp(36px, 4vw, 56px); padding-top: 26px; border-top: 1px solid var(--line-d); }
.need-cta p { margin: 0; color: rgba(255, 255, 255, .7); }

/* ---------- PRICING ---------- */
/* «Для викладача / Для шкіл» (and «Вокал / Фортепіано» on Можливості): two panels, one switch above them */
.switch { position: relative; display: inline-grid; grid-template-columns: 1fr 1fr; margin: 0 0 clamp(26px, 3vw, 40px); border: 1px solid var(--ink); }
.switch::before {
  content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 50%; background: var(--ink);
  transform: translateX(calc(var(--at, 0) * 100%)); transition: transform .5s cubic-bezier(.2, .8, .2, 1);
}
.switch button {
  position: relative; height: 46px; padding: 0 clamp(20px, 3vw, 34px); font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em;
  color: var(--g1); transition: color .35s;
}
.switch button:hover { color: var(--ink); }
.switch button[aria-selected="true"] { color: var(--paper); }
[data-panel].panel-in { animation: panelIn .6s cubic-bezier(.2, .8, .2, 1) both; }
@keyframes panelIn { from { opacity: 0; transform: translateY(16px); } }
.nb { white-space: nowrap; }
.compare-top { margin-top: clamp(64px, 8vw, 110px); }
.price b.word { font-size: clamp(34px, 3.4vw, 48px); line-height: .9; letter-spacing: -.02em; }
.school-plans .plan > .label:first-child { margin-top: 0; }
.trial { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 40px; align-items: center; padding: clamp(34px, 4vw, 56px) clamp(24px, 4vw, 56px); }
.trial h2 { margin: 12px 0 0; font: 700 clamp(36px, 4.6vw, 68px)/.9 var(--sans); text-transform: uppercase; letter-spacing: -.03em; }
.trial p { margin: 0; color: rgba(255, 255, 255, .7); }
.plans { display: grid; grid-template-columns: repeat(3, 1fr); border-left: 1px solid var(--line); margin-top: clamp(34px, 4vw, 56px); }
.plan { position: relative; display: flex; flex-direction: column; padding: 36px clamp(22px, 2.6vw, 36px) 34px; border: 1px solid var(--line); border-left: 0; }
.plan.pick { border: 1px solid var(--ink); margin: -1px 0 -1px -1px; box-shadow: 10px 10px 0 var(--ink); z-index: 1; background: var(--paper); }
.plan-flag { position: absolute; top: -1px; right: -1px; padding: 8px 12px; background: var(--ink); color: var(--paper); font: 500 11px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; }
.plan h3 { margin: 14px 0 6px; font: 600 23px/1 var(--sans); text-transform: uppercase; }
.plan .for { margin: 0; color: var(--g1); font-size: 14.5px; }
.price { display: flex; align-items: flex-start; gap: 4px; margin: 30px 0 4px; }
.price .cur { margin-top: 8px; font: 400 22px/1 var(--sans); }
.price b { font: 600 clamp(56px, 5.4vw, 80px)/.84 var(--sans); letter-spacing: -.04em; }
.price .per { align-self: flex-end; margin-left: 8px; font: 500 13px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .12em; color: var(--g1); }
.plans.two-plans { grid-template-columns: repeat(2, 1fr); }
.plan .price-year { margin: 14px 0 0; font: 500 15px/1.3 var(--sans); color: var(--g1); }
.plan .price-year b { font-weight: 600; font-size: 24px; letter-spacing: -.02em; color: var(--ink); }
.plan .save { margin: 12px 0 0; font: 500 12.5px/1.4 var(--sans); text-transform: uppercase; letter-spacing: .1em; }
.plan ul { list-style: none; margin: 28px 0 32px; padding: 0; }
.plan li { padding: 9px 0; border-top: 1px solid var(--line); font-size: 14.5px; }
.plan li:last-child { border-bottom: 1px solid var(--line); }
.plan .btn { margin-top: auto; }
.school { display: grid; grid-template-columns: 1fr 1.4fr auto; gap: 40px; align-items: center; margin-top: 40px; padding: 34px clamp(22px, 3vw, 40px); border: 1px solid var(--ink); }
.school h3 { margin: 12px 0 0; font: 700 clamp(28px, 3vw, 42px)/.92 var(--sans); text-transform: uppercase; letter-spacing: -.02em; }
.school p { margin: 0; color: var(--g1); }
.table-scroll { overflow-x: auto; }
.compare { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 14.5px; }
.compare th, .compare td { padding: 15px 12px; border-bottom: 1px solid var(--line); text-align: center; }
.compare th:first-child, .compare td:first-child { text-align: left; padding-left: 0; }
.compare thead th { font: 500 12.5px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .12em; border-bottom: 1px solid var(--ink); vertical-align: bottom; }
.compare td { font: 500 12.5px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .06em; }
.compare td:first-child { font: 400 14.5px/1.4 var(--serif); text-transform: none; letter-spacing: 0; }
.compare .y::before { content: "●"; font-size: 11px; }
.compare .h { color: var(--g1); }
.fine { margin: 26px 0 0; font-size: 14.5px; color: var(--g1); }

/* ---------- FAQ ---------- */
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary {
  list-style: none; cursor: pointer; display: grid; grid-template-columns: 90px 1fr 40px; gap: 24px; align-items: center;
  padding: 22px 0; font: 500 clamp(16px, 1.5vw, 20px)/1.25 var(--sans); text-transform: uppercase; letter-spacing: .01em;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary .n { font-size: 13px; letter-spacing: .14em; color: var(--g2); }
.faq-list summary i { justify-self: end; position: relative; width: 22px; height: 22px; }
.faq-list summary i::before, .faq-list summary i::after { content: ""; position: absolute; left: 0; right: 0; top: 50%; height: 1.5px; background: currentColor; transition: transform .25s; }
.faq-list summary i::after { transform: rotate(90deg); }
.faq-list details[open] summary i::after { transform: rotate(0); }
.faq-list summary:hover { color: var(--g1); }
.faq-list details p { margin: -8px 0 30px; padding-left: 114px; max-width: 900px; color: var(--g1); }

/* ---------- LOGIN ---------- */
.login { display: grid; grid-template-columns: 1.1fr 1fr; min-height: calc(100vh - var(--head)); min-height: calc(100dvh - var(--head)); }
.login-side { display: flex; flex-direction: column; padding: clamp(40px, 5vw, 70px) var(--gutter); }
.login-side h1 { margin: auto 0 22px; font: 700 clamp(46px, 5.8vw, 92px)/.86 var(--sans); text-transform: uppercase; letter-spacing: -.035em; }
.login-side h1 .out { display: block; color: transparent; -webkit-text-stroke: 1.5px #fff; }
.login-side p { margin: 0; max-width: 440px; color: rgba(255, 255, 255, .68); }
.login-main { display: flex; align-items: center; justify-content: center; padding: clamp(40px, 5vw, 70px) var(--gutter); }
.login-box { width: min(430px, 100%); }
.login-box h2 { margin: 14px 0 8px; font: 600 28px/1 var(--sans); text-transform: uppercase; }
.login-box > p { margin: 0 0 32px; color: var(--g1); font-size: 15.5px; }
.field { display: block; margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
@media (max-width: 420px) { .field-row { grid-template-columns: 1fr; } }
.field > span { display: block; margin-bottom: 8px; }
.field input, .join-row input {
  width: 100%; height: 56px; padding: 0 16px; border: 1px solid var(--ink); border-radius: 0; background: #fff;
  font: 16px -apple-system, "Segoe UI", Roboto, sans-serif; outline: none; transition: box-shadow .2s;
}
.field input:focus, .join-row input:focus { box-shadow: 4px 4px 0 var(--ink); }
.pass-wrap { position: relative; }
.pass-wrap input { padding-right: 56px; }
.pass-eye { position: absolute; right: 6px; top: 7px; width: 42px; height: 42px; display: grid; place-items: center; color: var(--g2); }
.pass-eye:hover { color: var(--ink); }
.pass-eye svg { width: 20px; height: 20px; }
.login-box .btn { width: 100%; }
.form-msg { min-height: 22px; margin: 12px 0 0; font-size: 14.5px; }
.form-msg.ok { color: var(--g1); }
.or { display: flex; align-items: center; gap: 14px; margin: 36px 0 18px; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.join-row { display: flex; gap: 8px; }
.join-row input { flex: 1; min-width: 0; height: 54px; }
.join-row .btn { width: auto; height: 54px; }
.login-help { margin: 28px 0 0; font-size: 14.5px; color: var(--g1); }
.login-help a { color: var(--ink); border-bottom: 1px solid currentColor; }
.login-help.login-forgot { margin: 14px 0 0; font-size: 14px; } /* «Забули пароль?» under the button */

/* registration: direction chips, the plan list */
.chips { display: flex; border: 1px solid var(--ink); }
.chips label { flex: 1; position: relative; cursor: pointer; }
.chips label + label { border-left: 1px solid var(--ink); }
.chips input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chips span { display: grid; place-items: center; height: 48px; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; color: var(--g1); transition: background .3s, color .3s; }
.chips label:hover span { color: var(--ink); }
.chips input:checked + span { background: var(--ink); color: var(--paper); }
.chips input:focus-visible + span { outline: 1.5px solid var(--ink); outline-offset: 3px; }
.field select {
  width: 100%; height: 54px; padding: 0 44px 0 16px; border: 1px solid var(--ink); border-radius: 0; background: #fff; color: var(--ink);
  font: 16px -apple-system, "Segoe UI", Roboto, sans-serif; outline: none; -webkit-appearance: none; appearance: none; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(-45deg, transparent 50%, var(--ink) 50%);
  background-position: calc(100% - 22px) 50%, calc(100% - 16px) 50%; background-size: 6px 6px; background-repeat: no-repeat;
  transition: box-shadow .2s;
}
.field select:focus { box-shadow: 4px 4px 0 var(--ink); }
.field .opt { font-style: normal; text-transform: none; letter-spacing: 0; color: var(--g2); }
.field.bad input { box-shadow: 4px 4px 0 var(--ink); }
.login-box .field input { height: 50px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.reg-done { margin: 0 0 22px; padding: 18px 20px; border: 1px solid var(--ink); font-size: 15.5px; }

/* ---------- footer ---------- */
.footer { padding: clamp(56px, 7vw, 90px) 0 calc(26px + env(safe-area-inset-bottom)); border-top: 1px solid var(--ink); }
.foot-top { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; }
.foot-brand img { height: 46px; width: auto; }
.foot-brand p { margin: 18px 0 0; font-size: 15px; color: var(--g1); }
.foot-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.foot-cols h4 { margin: 0 0 14px; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .18em; color: var(--g2); }
.foot-cols a { display: block; padding: 6px 0; font-size: 14.5px; overflow-wrap: anywhere; }
.foot-cols a:hover { text-decoration: underline; text-underline-offset: 4px; }
.foot-word { margin: clamp(46px, 6vw, 80px) 0 0; font: 700 clamp(60px, 15.4vw, 236px)/.78 var(--sans); letter-spacing: -.045em; white-space: nowrap; overflow: hidden; text-align: center; color: transparent; -webkit-text-stroke: 1px var(--ink); }
.foot-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); font: 500 12px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .14em; color: var(--g1); }
.foot-bottom a:hover { color: var(--ink); }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s ease var(--d, 0s), transform 1s cubic-bezier(.2, .7, .2, 1) var(--d, 0s); }
.reveal.in-view { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* an underlined link inside text */
a.u { border-bottom: 1px solid currentColor; }
a.u:hover { color: var(--g1); }

/* ---------- «Чому не Zoom» (home): an ordinary call next to the lesson room ---------- */
.vs { border-top: 1px solid var(--ink); }
.vs-row { display: grid; grid-template-columns: 200px 1fr 1fr; gap: 40px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.vs-row b { font: 600 clamp(19px, 1.7vw, 24px)/1.1 var(--sans); text-transform: uppercase; }
.vs-row span { color: var(--g2); font-size: 15px; }
.vs-row span:last-child { color: var(--ink); }
.vs-head { padding: 14px 0; }
.vs-head span { font: 500 12px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .18em; color: var(--g1); }
.vs-head span:last-child { color: var(--ink); }

/* ---------- «Напишіть нам» (home) ---------- */
.contact-sec { border-top: 1px solid var(--ink); }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact h2 { margin: 18px 0 16px; font: 600 clamp(28px, 3vw, 44px)/1 var(--sans); text-transform: uppercase; letter-spacing: -.015em; }
.contact p { margin: 0; max-width: 480px; color: var(--g1); }
.contact-form { max-width: 560px; }
.contact-form .btn { width: 100%; }
.field textarea {
  display: block; width: 100%; min-height: 128px; padding: 14px 16px; border: 1px solid var(--ink); border-radius: 0; background: #fff; color: var(--ink);
  font: 16px/1.5 -apple-system, "Segoe UI", Roboto, sans-serif; outline: none; resize: vertical; transition: box-shadow .2s;
}
.field textarea:focus, .field.bad textarea { box-shadow: 4px 4px 0 var(--ink); }
.contact-done { max-width: 560px; padding: 26px 28px; border: 1px solid var(--ink); }
.contact-done p { margin: 10px 0 0; color: var(--ink); font-size: 16.5px; }
/* «I agree with…» under a form */
.consent { display: flex; gap: 12px; align-items: flex-start; margin: 4px 0 18px; font-size: 14px; line-height: 1.45; color: var(--g1); cursor: pointer; }
.consent input { flex: none; width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--ink); cursor: pointer; }
.consent a { color: var(--ink); border-bottom: 1px solid currentColor; }
.consent.bad { color: var(--ink); }
.consent.bad input { outline: 2px solid var(--ink); outline-offset: 2px; }

/* ---------- documents: Конфіденційність, Умови ---------- */
.legal { display: grid; grid-template-columns: 240px 1fr; gap: 60px; padding-top: 34px; border-top: 1px solid var(--ink); }
.legal-toc { position: sticky; top: calc(var(--head) + 24px); align-self: start; display: grid; gap: 4px; }
.legal-toc a { padding: 6px 0; font: 500 12px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .14em; color: var(--g1); }
.legal-toc a:hover { color: var(--ink); }
.legal-body { max-width: 760px; }
.legal-body h2 { margin: 48px 0 14px; font: 600 clamp(20px, 1.8vw, 26px)/1.1 var(--sans); text-transform: uppercase; }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p, .legal-body li { font-size: 16px; line-height: 1.65; }
.legal-body p { margin: 0 0 14px; }
.legal-body ul { margin: 0 0 14px; padding-left: 20px; }
.legal-body li + li { margin-top: 8px; }
.legal-body a:not(.link-arrow) { border-bottom: 1px solid currentColor; }
.legal-next { margin-top: 44px !important; }
.foot-docs { display: flex; gap: 22px; flex-wrap: wrap; }

/* ---------- «Перевірка техніки» ---------- */
.check-bar { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 26px; margin-bottom: 24px; border: 1px solid var(--ink); }
.check-sum { display: grid; gap: 4px; }
.check-sum b { font: 600 clamp(20px, 1.9vw, 26px)/1.1 var(--sans); text-transform: uppercase; }
.check-sum span { color: var(--g1); font-size: 15px; }
.check-bar:has(.check-sum[data-state="ok"]) { background: var(--ink); color: var(--paper); }
.check-bar:has(.check-sum[data-state="ok"]) .check-sum span { color: rgba(255, 255, 255, .7); }
.check-bar:has(.check-sum[data-state="ok"]) .btn { background: transparent; color: var(--paper); border-color: rgba(255, 255, 255, .55); --fill: var(--paper); --fill-text: var(--ink); }
.checks { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--line); }
.check { display: flex; flex-direction: column; gap: 14px; padding: 24px 24px 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .3s; }
.check-head { display: flex; align-items: baseline; gap: 14px; }
.check-head .n { font: 500 13px/1 var(--sans); letter-spacing: .14em; color: var(--g2); }
.check-head h3 { margin: 0; font: 600 21px/1.1 var(--sans); text-transform: uppercase; }
.check-tag { margin-left: auto; font: 500 11px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; }
.check-tag:empty { display: none; }
.check[data-state="wait"] .check-tag { color: var(--g2); animation: chkPulse 1.2s ease-in-out infinite; }
.check[data-state="ok"] .check-tag { padding: 5px 8px; background: var(--ink); color: var(--paper); }
.check[data-state="ok"] .check-tag::before { content: "✓ "; }
.check[data-state="warn"] .check-tag { padding: 4px 7px; border: 1px solid var(--ink); }
.check[data-state="bad"] { background: var(--paper-2); }
.check[data-state="bad"] .check-tag { padding: 5px 8px; background: var(--ink); color: var(--paper); }
.check[data-state="bad"] .check-tag::before { content: "✕ "; }
@keyframes chkPulse { 50% { opacity: .35; } }
.check-msg { margin: 0; font-size: 15px; color: var(--g1); }
.check[data-state="ok"] .check-msg, .check[data-state="bad"] .check-msg { color: var(--ink); }
.check-video { position: relative; aspect-ratio: 16 / 9; background: var(--paper-2); overflow: hidden; }
.check-video video { width: 100%; height: 100%; object-fit: cover; transform: scaleX(-1); opacity: 0; transition: opacity .4s; }
.check-video span { position: absolute; inset: 0; display: grid; place-items: center; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; color: var(--g2); }
.check.live .check-video video { opacity: 1; }
.check.live .check-video span { display: none; }
.meter { height: 12px; border: 1px solid var(--ink); overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform .08s linear; }
.check-sel {
  width: 100%; height: 42px; padding: 0 36px 0 12px; border: 1px solid var(--ink); border-radius: 0; background: #fff; color: var(--ink);
  font: 14px -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-appearance: none; appearance: none; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(-45deg, transparent 50%, var(--ink) 50%);
  background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px; background-repeat: no-repeat;
}
.check-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.check-ask { display: inline-flex; align-items: center; gap: 8px; font: 500 12px/1 var(--sans); text-transform: uppercase; letter-spacing: .14em; }
.check-foot { margin: 26px 0 0; color: var(--g1); }

/* ============ SELLING: the headline, trust, the moving pictures ============ */
/* hero: what it is in one line, the academy's numbers under it */
.hero-claim { margin: 0 0 16px; max-width: 720px; font: 600 clamp(28px, 3.1vw, 46px)/1 var(--sans); text-transform: uppercase; letter-spacing: -.012em; }
.hero-text .hero-lead { color: var(--g1); }
.hero-trust { display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); margin: clamp(28px, 3vw, 40px) 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero-trust li { display: flex; align-items: baseline; gap: 10px; padding: 14px 0; }
.hero-trust li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.hero-trust b { font: 600 clamp(18px, 1.6vw, 24px)/1 var(--sans); text-transform: uppercase; letter-spacing: -.005em; white-space: nowrap; }
.hero-trust span { font-size: 13.5px; line-height: 1.3; color: var(--g1); }

/* the demo's three steps: numbered marks over the room, next to what to press (site.js) */
.demo-coach { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.coach {
  position: absolute; display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 6px;
  background: var(--ink); color: var(--paper); font: 500 11.5px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; white-space: nowrap;
  transform: translate(-50%, calc(-100% - 10px)); box-shadow: 0 6px 18px rgba(0, 0, 0, .25); transition: opacity .4s, transform .4s;
}
.coach[data-place="below"] { transform: translate(-50%, 10px); }
.coach::after { content: ""; position: absolute; left: 50%; top: 100%; margin-left: -5px; border: 5px solid transparent; border-top-color: var(--ink); }
.coach[data-place="below"]::after { top: auto; bottom: 100%; border-top-color: transparent; border-bottom-color: var(--ink); }
.coach b { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--paper); color: var(--ink); font-size: 11px; letter-spacing: 0; animation: coachPulse 1.6s ease-out infinite; }
.coach.done { opacity: 0; }
@keyframes coachPulse { 0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, .75); } 100% { box-shadow: 0 0 0 9px rgba(255, 255, 255, 0); } }

/* «Було → Стало»: the separate tools fly into one room, again and again (site.js sets --dx, --dy, --i) */
.merge { display: grid; grid-template-columns: 1.4fr auto 1fr; align-items: center; gap: 32px; margin: 0 0 clamp(36px, 4vw, 56px); padding: 26px; border: 1px solid var(--ink); }
.merge-chips { position: relative; height: 190px; margin-top: 14px; }
.merge-chips i {
  position: absolute; left: var(--x); top: var(--y); padding: 9px 14px; border: 1px solid var(--ink); background: var(--paper);
  font: 500 12px/1 var(--sans); font-style: normal; text-transform: uppercase; letter-spacing: .12em; white-space: nowrap; transform: rotate(var(--r));
}
.merge.in-view .merge-chips i { animation: mergeFly 7s cubic-bezier(.6, 0, .3, 1) infinite; animation-delay: calc(var(--i, 0) * .12s); }
@keyframes mergeFly {
  0%, 30% { transform: rotate(var(--r)); opacity: 1; }
  48%, 82% { transform: translate(var(--dx, 0), var(--dy, 0)) scale(.3); opacity: 0; }
  83% { transform: rotate(var(--r)) scale(.9); opacity: 0; }
  100% { transform: rotate(var(--r)); opacity: 1; }
}
.merge-arrow { font: 300 40px/1 var(--sans); }
.merge-now { padding: 30px 26px; background: var(--ink); color: var(--paper); text-align: center; }
.merge-now .label { color: rgba(255, 255, 255, .55); }
.merge-now b { display: block; margin: 12px 0 8px; font: 700 clamp(26px, 2.6vw, 38px)/.95 var(--sans); text-transform: uppercase; letter-spacing: -.02em; }
.merge-now small { font-size: 13.5px; color: rgba(255, 255, 255, .7); }
.merge.in-view .merge-now { animation: mergeGlow 7s ease-in-out infinite; }
@keyframes mergeGlow { 0%, 44%, 70%, 100% { transform: none; box-shadow: 0 0 0 0 rgba(11, 11, 11, 0); } 54% { transform: scale(1.04); box-shadow: 0 0 0 10px rgba(11, 11, 11, .1); } }

/* «Урок за 45 хвилин»: a line that fills, a dot for each part of the lesson */
.lesson-line { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; list-style: none; }
.lesson-line::before, .lesson-line::after { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 1px; background: var(--line); }
.lesson-line::after { background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform 2.2s cubic-bezier(.3, .6, .2, 1) .2s; }
.lesson-line.in-view::after { transform: scaleX(1); }
.lesson-line li { position: relative; padding: 34px 26px 0 0; }
.lesson-line li::before { content: ""; position: absolute; left: 0; top: 0; z-index: 1; width: 15px; height: 15px; border-radius: 50%; border: 1px solid var(--ink); background: var(--paper); transition: background .3s .3s; }
.lesson-line li:nth-child(2)::before { transition-delay: .75s; }
.lesson-line li:nth-child(3)::before { transition-delay: 1.2s; }
.lesson-line li:nth-child(4)::before { transition-delay: 1.65s; }
.lesson-line li:nth-child(5)::before { transition-delay: 2.1s; }
.lesson-line.in-view li::before { background: var(--ink); }
.lesson-line .t { font: 500 13px/1 var(--sans); letter-spacing: .14em; color: var(--g2); }
.lesson-line h3 { margin: 10px 0 8px; font: 600 clamp(19px, 1.6vw, 23px)/1.1 var(--sans); text-transform: uppercase; }
.lesson-line p { margin: 0; font-size: 14.5px; color: var(--g1); }

/* «15 днів — усе й одразу» */
.gift { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; align-items: start; }
.gift h2 { margin: 18px 0 14px; font: 700 clamp(34px, 4vw, 60px)/.92 var(--sans); text-transform: uppercase; letter-spacing: -.03em; }
.gift p { margin: 0 0 28px; max-width: 420px; color: rgba(255, 255, 255, .7); }
.gift-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-d); }
.gift-list li { display: grid; grid-template-columns: 26px 1fr; gap: 4px 16px; padding: 18px 0; border-bottom: 1px solid var(--line-d); }
.gift-list li::before { content: "✓"; grid-row: span 2; display: grid; place-items: center; width: 26px; height: 26px; border: 1px solid rgba(255, 255, 255, .55); font: 13px/1 var(--sans); }
.gift-list b { font: 600 17px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .02em; }
.gift-list span { font-size: 14.5px; color: rgba(255, 255, 255, .65); }

/* Можливості: three small moving pictures */
.showcase { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.show { display: flex; flex-direction: column; }
.show-vis { position: relative; height: 190px; margin-bottom: 18px; border: 1px solid var(--ink); background: #fff; overflow: hidden; }
.show h3 { margin: 0 0 8px; font: 600 clamp(19px, 1.6vw, 23px)/1.1 var(--sans); text-transform: uppercase; }
.show p { margin: 0; font-size: 14.5px; color: var(--g1); }
.show-sync { display: flex; flex-direction: column; justify-content: center; gap: 16px; padding: 0 18px; }
.sync-row .label { font-size: 10.5px; }
.bars { position: relative; height: 34px; margin-top: 8px; }
.bars span { position: absolute; inset: 0; display: flex; align-items: center; gap: 2px; }
.bars i { flex: 1; height: var(--h); background: #d6d6d6; }
.bars .on i { background: var(--ink); }
.bars .on { clip-path: inset(0 100% 0 0); }
.bars::after { content: ""; position: absolute; top: -4px; bottom: -4px; left: 0; width: 1.5px; background: var(--ink); }
.show.in-view .bars .on { animation: sweep 6s linear infinite; }
.show.in-view .bars::after { animation: sweepHead 6s linear infinite; }
@keyframes sweep { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes sweepHead { from { left: 0; } to { left: 100%; } }
.sync-chip, .show .pitch-chip { position: absolute; right: 12px; top: 12px; padding: 6px 10px; background: var(--ink); color: #fff; font: 500 11px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; }
.show-sync .sync-chip { top: auto; bottom: 12px; }
.show-keys { display: flex; flex-direction: column; justify-content: center; gap: 12px; padding: 0 18px; }
.kx { position: relative; display: flex; height: 104px; border: 1px solid var(--ink); }
.kx b { flex: 1; border-right: 1px solid #cfcfcf; background: #fff; }
.kx b:last-of-type { border-right: 0; }
.kx u { position: absolute; top: 0; width: 5.2%; height: 58%; background: var(--ink); transform: translateX(-50%); }
.kx b.t1, .kx b.t2, .kx b.t3 { animation: keyT 6s infinite; }
.kx b.s1, .kx b.s2, .kx b.s3 { animation: keyS 6s infinite; }
.kx b.t2 { animation-delay: .7s; } .kx b.t3 { animation-delay: 1.4s; }
.kx b.s1 { animation-delay: 3s; } .kx b.s2 { animation-delay: 3.7s; } .kx b.s3 { animation-delay: 4.4s; }
@keyframes keyT { 0%, 16% { background: #4a4a4a; } 17%, 100% { background: #fff; } }
@keyframes keyS { 0%, 16% { background: repeating-linear-gradient(45deg, #8f8f8f 0 2px, #fff 2px 6px); } 17%, 100% { background: #fff; } }
.kx-legend { display: flex; gap: 18px; font: 500 11px/1 var(--sans); text-transform: uppercase; letter-spacing: .12em; color: var(--g1); }
.kx-legend span { display: inline-flex; align-items: center; gap: 7px; }
.kx-legend i { width: 12px; height: 12px; border: 1px solid var(--ink); background: #4a4a4a; }
.kx-legend i.s { background: repeating-linear-gradient(45deg, #8f8f8f 0 2px, #fff 2px 5px); }
.show-pitch::before { content: ""; position: absolute; inset: 0; background: repeating-linear-gradient(to bottom, transparent 0 26px, #efefef 26px 27px); }
.show-pitch svg { position: absolute; inset: 14px 0 8px; width: 100%; height: calc(100% - 22px); }
.show-pitch .target { stroke: #dcdcdc; stroke-width: 10; fill: none; }
.show-pitch .sung { stroke: var(--ink); stroke-width: 2.5; fill: none; stroke-linecap: round; stroke-dasharray: 700; stroke-dashoffset: 700; }
.show.in-view .show-pitch .sung { animation: drawLoop 5s ease-in-out infinite; }
@keyframes drawLoop { 0% { stroke-dashoffset: 700; opacity: 1; } 60%, 85% { stroke-dashoffset: 0; opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 0; } }

/* after the first screen: the trial, one click away (site.js) */
.sticky-cta {
  position: fixed; left: 50%; bottom: calc(18px + env(safe-area-inset-bottom)); z-index: 45;
  display: flex; align-items: center; gap: 18px; padding: 8px 8px 8px 20px;
  background: var(--ink); color: var(--paper); font: 500 12px/1.2 var(--sans); text-transform: uppercase; letter-spacing: .12em; white-space: nowrap;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .25); transform: translate(-50%, 160%); opacity: 0; pointer-events: none;
  transition: transform .45s cubic-bezier(.2, .8, .2, 1), opacity .3s;
}
.sticky-cta.on { transform: translate(-50%, 0); opacity: 1; pointer-events: auto; }
.sticky-cta em { font-style: normal; color: rgba(255, 255, 255, .6); }
.sticky-cta .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); --fill: #2c2c2c; --fill-text: var(--paper); }
@media (prefers-reduced-motion: reduce) {
  .merge.in-view .merge-chips i, .merge.in-view .merge-now, .show.in-view .bars .on, .show.in-view .bars::after, .kx b, .show.in-view .show-pitch .sung, .coach b { animation: none !important; }
  .bars .on { clip-path: inset(0 40% 0 0); }
  .show-pitch .sung { stroke-dashoffset: 0; }
}

/* ============ SMALLER SCREENS ============ */
@media (max-width: 1180px) {
  .tabs a { padding: 0 13px; letter-spacing: .08em; }
  .brand { padding-right: 18px; }
}
@media (max-width: 1040px) {
  :root { --head: 64px; }
  .checks { grid-template-columns: 1fr 1fr; }
  .vs-row { grid-template-columns: 140px 1fr 1fr; gap: 24px; }
  .showcase { grid-template-columns: 1fr 1fr; }
  .gift { grid-template-columns: 1fr; gap: 34px; }
  .lesson-line { grid-template-columns: repeat(3, 1fr); row-gap: 30px; }
  .lesson-line::before, .lesson-line::after { display: none; }
  /* a backdrop filter would make the header the frame of the fixed menu inside it */
  .header { background: var(--paper); -webkit-backdrop-filter: none; backdrop-filter: none; }
  .burger { display: grid; }
  .head-actions { margin-left: auto; }
  .head-actions .btn { display: none; }
  .lang { margin-right: 0; }
  .burger { margin-left: 8px; }
  .brand { border-right: 0; }
  .tabs {
    position: fixed; top: calc(var(--head) + env(safe-area-inset-top)); left: 0; right: 0; bottom: 0; z-index: 49;
    flex-direction: column; align-items: stretch; margin: 0; padding: 12px var(--gutter) calc(30px + env(safe-area-inset-bottom));
    background: var(--paper); overflow-y: auto;
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .25s, transform .25s, visibility 0s linear .25s;
  }
  .tabs a { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); font-size: clamp(28px, 7vw, 40px); font-weight: 600; letter-spacing: 0; color: var(--ink); }
  .tabs a:hover { background: none; }
  .tabs a[aria-current="page"] { background: none; color: var(--ink); }
  .tabs a[aria-current="page"]::after { content: "●"; margin-left: auto; font-size: 14px; }
  .tabs .tabs-login { display: flex; margin-top: 26px; justify-content: center; padding: 18px; border: 1px solid var(--ink); font-size: 14px; letter-spacing: .14em; }
  .tabs .tabs-register { margin-top: 10px; background: var(--ink); color: var(--paper); }
  .tabs .tabs-register[aria-current="page"] { background: var(--ink); color: var(--paper); }
  .tabs .tabs-login::after, .tabs .tabs-login[aria-current="page"]::after { display: none; }
  .menu-open .tabs { opacity: 1; visibility: visible; transform: none; transition: opacity .25s, transform .25s; }
  .menu-open { overflow: hidden; }

  .hero-grid { grid-template-columns: 1fr; }
  .room-mock { max-width: 680px; }
  .facts { grid-template-columns: 1fr 1fr; }
  .fact:nth-child(3) { border-left: 0; padding-left: 0; }
  .fact:nth-child(n+3) { border-top: 1px solid var(--line-d); }
  .plans, .plans.two-plans { grid-template-columns: 1fr; border-left: 0; }
  .plan { border-left: 1px solid var(--line); }
  .plan.pick { margin: -1px 0; }
  .trial, .school { grid-template-columns: 1fr; gap: 22px; }
  .needs { grid-template-columns: 1fr 1fr; }
  .need:nth-child(3) { border-left: 0; padding-left: 0; }
  .spotlight { grid-template-columns: 1fr; }
  .cta-in { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  body { font-size: 15px; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
  .hero-meta span:nth-child(2) { display: none; }
  .hero-word { font-size: 17.6vw; } /* the whole name fits the screen's width */
  .hero-actions .btn { flex: 1 1 100%; }
  .room-mock { box-shadow: 8px 8px 0 var(--ink); }
  .mock-keys { height: 60px; }
  .mock-sync { display: none; }
  .page-head .lead-row, .sec-top, .manifest, .foot-top { grid-template-columns: 1fr; gap: 16px; }
  .page-head .meta span:last-child { display: none; }
  .index a { grid-template-columns: 44px 1fr 30px; gap: 8px 14px; padding: 24px 0; }
  .index a p { grid-column: 2 / 3; }
  .index .go { grid-row: 1; grid-column: 3; }
  .feat { grid-template-columns: 44px 1fr; gap: 10px 14px; }
  .feat > div, .feat p { grid-column: 2; }
  .feat svg { display: none; }
  .aud-grid { grid-template-columns: 1fr; }
  .aud { min-height: 0; }
  .step { grid-template-columns: 1fr; gap: 12px; }
  .needs { grid-template-columns: 1fr; }
  .need, .need:nth-child(3) { border-left: 0; padding: 26px 0 0; }
  .need + .need { border-top: 1px solid var(--line-d); margin-top: 26px; }
  .need-cta { flex-direction: column; align-items: stretch; }
  .faq-list summary { grid-template-columns: 34px 1fr 24px; gap: 12px; padding: 22px 0; }
  .faq-list details p { padding-left: 46px; }
  .foot-cols { grid-template-columns: 1fr 1fr; }
  .foot-bottom { flex-direction: column; gap: 10px; }
  .login { grid-template-columns: 1fr; min-height: 0; }
  .login-side h1 { margin-top: 20px; }
  .join-row { flex-direction: column; }
  .join-row input { flex: none; }
  .join-row .btn { width: 100%; }
  .cta-actions .btn { flex: 1 1 100%; }
  .trial .btn, .school .btn { width: 100%; }
  .switch { display: grid; }
  .switch button { padding: 0 10px; letter-spacing: .1em; }
  /* «Чому не Zoom»: each row — the topic, then the two answers one under the other */
  .vs-head { display: none; }
  .vs-row { grid-template-columns: 1fr; gap: 10px; padding: 22px 0; }
  .vs-row span::before { display: block; margin-bottom: 4px; font: 500 11px/1.3 var(--sans); text-transform: uppercase; letter-spacing: .16em; color: var(--g2); }
  .vs-row span:nth-of-type(1)::before { content: "Zoom, Skype, Meet"; }
  .vs-row span:nth-of-type(2)::before { content: "I SING Room"; color: var(--ink); }
  .contact { grid-template-columns: 1fr; gap: 26px; }
  .legal { grid-template-columns: 1fr; gap: 26px; }
  .legal-toc { position: static; display: flex; flex-wrap: wrap; gap: 4px 18px; }
  .check-bar { flex-direction: column; align-items: stretch; padding: 20px; }
  .hero-trust { grid-template-columns: 1fr 1fr; }
  .hero-trust li:first-child { grid-column: 1 / -1; }
  .hero-trust li + li { padding-left: 0; border-left: 0; }
  .hero-trust li:nth-child(n + 2) { flex-direction: column; gap: 4px; border-top: 1px solid var(--line); }
  .hero-trust li:nth-child(4) { grid-column: 1 / -1; flex-direction: row; gap: 10px; }
  .merge { grid-template-columns: 1fr; gap: 18px; padding: 20px; }
  .merge-chips { height: 170px; }
  .merge-arrow { justify-self: center; transform: rotate(90deg); }
  .lesson-line { grid-template-columns: 1fr; row-gap: 0; }
  .lesson-line::before, .lesson-line::after { display: block; left: 7px; right: auto; top: 4px; bottom: 30px; width: 1px; height: auto; }
  .lesson-line::after { transform: scaleY(0); transform-origin: top; }
  .lesson-line.in-view::after { transform: scaleY(1); }
  .lesson-line li { padding: 0 0 26px 34px; }
  .lesson-line li::before { top: 2px; }
  .showcase { grid-template-columns: 1fr; }
  .sticky-cta { left: 0; right: 0; bottom: 0; justify-content: space-between; padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); font-size: 11px; transform: translateY(100%); }
  .sticky-cta.on { transform: none; }
  .sticky-cta em { display: none; }
  .check-bar .btn { width: 100%; }
  .checks { grid-template-columns: 1fr; }
}


/* ============ MOTION: the site reacts ============ */
/* page to page: the content fades and rises, the tabs stay (View Transitions, where the browser has them) */
@view-transition { navigation: auto; }
.header { view-transition-name: site-header; }
::view-transition-old(root) { animation: vtOut .28s ease both; }
::view-transition-new(root) { animation: vtIn .55s cubic-bezier(.2, .8, .2, 1) both; }
@keyframes vtOut { to { opacity: 0; transform: translateY(-10px); } }
@keyframes vtIn { from { opacity: 0; transform: translateY(18px); } }

/* the header: slides away while you read down, comes back when you scroll up; a hairline shows how far you are */
.header { transition: transform .45s cubic-bezier(.2, .8, .2, 1); }
.header.away { transform: translateY(-101%); }
.progress { position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--ink); transform: scaleX(0); transform-origin: left; pointer-events: none; }
@media (min-width: 1041px) {
  .tabs a::after { content: ""; position: absolute; left: 20px; right: 20px; bottom: 14px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .4s cubic-bezier(.2, .8, .2, 1); }
  .tabs a:hover::after { transform: scaleX(1); transform-origin: left; }
  .tabs a[aria-current="page"]::after { display: none; }
}

/* big titles: each word rises out of its own line */
.split .w { display: inline-block; overflow: hidden; vertical-align: top; padding: .16em .02em .06em; margin: -.16em -.02em -.06em; }
.split .wi { display: inline-block; transform: translateY(110%); transition: transform 1.05s cubic-bezier(.2, .8, .2, 1) calc(var(--i) * 70ms + var(--d, 0s)); }
.split.in-view .wi { transform: none; }
.no-js .split .wi { transform: none; }

/* a running line of what Room does */
.marquee { overflow: hidden; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); padding: 18px 0; user-select: none; }
.marquee-track { display: flex; width: max-content; animation: marquee 38s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee span { display: flex; align-items: center; gap: 34px; padding-right: 34px; font: 500 clamp(20px, 2.2vw, 30px)/1 var(--sans); text-transform: uppercase; letter-spacing: .02em; white-space: nowrap; }
.marquee span i { font-style: normal; font-size: .7em; transition: transform .6s; }
.marquee span b { font-weight: 500; color: transparent; -webkit-text-stroke: 1px var(--ink); }
.marquee:hover span i { transform: rotate(180deg); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* the drawn room lives: keys answer the pointer, the track plays, the frame leans towards you */
.mock-wrap { perspective: 1400px; }
.room-mock { transition: transform .6s cubic-bezier(.2, .8, .2, 1), box-shadow .6s; transform-style: preserve-3d; will-change: transform; }
.mock-keys b { cursor: pointer; transition: background .08s; }
.mock-keys b:hover, .mock-keys b.hit { background: #4a4a4a !important; animation: none; }
.mock-keys u { cursor: pointer; transition: background .08s; }
.mock-keys u:hover, .mock-keys u.hit { background: #6a6a6a; }
.mock-play { cursor: pointer; transition: transform .2s; }
.mock-play:hover { transform: scale(1.1); }
.mock-play.paused::before { border: 0; width: 8px; height: 10px; margin: 0; background: linear-gradient(90deg, #fff 0 3px, transparent 3px 5px, #fff 5px); }
.mock-wave i { transition: background .2s; }

/* features: the number and the icon answer, the icon draws itself in */
.feat > * { transition: color .35s, transform .5s cubic-bezier(.2, .8, .2, 1); }
.feat:hover h3 { transform: translateX(10px); }
.feat:hover .n { color: var(--ink); }
.feat:hover svg { transform: rotate(-8deg) scale(1.08); }
.feat svg * { stroke-dasharray: 260; stroke-dashoffset: 260; transition: stroke-dashoffset 1.8s cubic-bezier(.3, .6, .2, 1) .2s; }
.feat.in-view svg * { stroke-dashoffset: 0; }

/* audience, steps, plans */
.aud h2 { transition: transform .6s cubic-bezier(.2, .8, .2, 1); }
.aud:hover h2 { transform: translateX(10px); }
.aud li { transition: padding .35s cubic-bezier(.2, .8, .2, 1); }
.aud li:hover { padding-left: 8px; }
.step::before { color: transparent; -webkit-text-stroke: 1px var(--ink); transition: color 1s ease .35s; }
.step.in-view::before { color: var(--ink); }
.step:hover h3 { transform: translateX(8px); }
.step h3 { transition: transform .5s cubic-bezier(.2, .8, .2, 1); }
.plan { transition: transform .5s cubic-bezier(.2, .8, .2, 1), box-shadow .5s cubic-bezier(.2, .8, .2, 1), opacity .9s ease var(--d, 0s); }
.plan:not(.pick):hover { transform: translateY(-6px); box-shadow: 8px 8px 0 var(--ink); z-index: 2; }
.plan.pick:hover { transform: translate(-4px, -4px); box-shadow: 14px 14px 0 var(--ink); }
.compare tbody tr { transition: background .25s; }
.compare tbody tr:hover { background: var(--paper-2); }
.need { transition: background .4s; }
.need:hover h3 { transform: translateX(6px); }
.need h3 { transition: transform .5s cubic-bezier(.2, .8, .2, 1); }
.faq-list summary { transition: color .3s, padding .45s cubic-bezier(.2, .8, .2, 1); }
.faq-list summary:hover { padding-left: 10px; }
.faq-list summary i { transition: transform .45s cubic-bezier(.2, .8, .2, 1); }
.faq-list details[open] summary i { transform: rotate(180deg); }

/* the footer's name fills in under the pointer */
.foot-word { background: linear-gradient(var(--ink), var(--ink)) no-repeat left / 0 100%; -webkit-background-clip: text; background-clip: text; transition: background-size 1.1s cubic-bezier(.2, .8, .2, 1); }
.foot-word:hover { background-size: 100% 100%; }

/* a ring that follows the pointer and grows over what can be clicked (mouse only) */
.cursor {
  position: fixed; left: 0; top: 0; z-index: 100; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%;
  border: 1px solid #fff; mix-blend-mode: difference; pointer-events: none; opacity: 0;
  transition: width .35s cubic-bezier(.2, .8, .2, 1), height .35s cubic-bezier(.2, .8, .2, 1), margin .35s cubic-bezier(.2, .8, .2, 1), opacity .3s, background .3s;
}
.cursor.on { opacity: 1; }
.cursor.link { width: 64px; height: 64px; margin: -32px 0 0 -32px; background: #fff; }
.cursor.down { width: 22px; height: 22px; margin: -11px 0 0 -11px; }
@media (hover: none), (pointer: coarse) { .cursor { display: none; } }

@media (prefers-reduced-motion: reduce) {
  .reveal, .split .wi { opacity: 1 !important; transform: none !important; }
  .marquee-track { animation: none; }
  .feat svg * { stroke-dashoffset: 0; }
  .step::before { color: var(--ink); }
  .cursor { display: none; }
}