:root {
  --bg: #07060c;
  --ink: #f4f1ea;
  --muted: #a39fb0;
  --dim: #6c687a;
  --line: rgba(255, 255, 255, 0.09);
  --glass: rgba(18, 16, 28, 0.55);
  --hot: #ff5a4e;
  --amber: #ffb35c;
  --violet: #8b7bff;
  --serif: "Instrument Serif", Georgia, serif;
  --sans: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --gutter: clamp(16px, 4vw, 48px);
  color-scheme: dark;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: radial-gradient(1200px 800px at 75% 10%, #1a1030 0%, var(--bg) 60%) fixed, var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
em { font-family: var(--serif); font-style: italic; font-weight: 400; color: var(--hot); letter-spacing: 0; }
::selection { background: var(--hot); color: #fff; }

#scene { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.grain {
  position: fixed; inset: -50%; z-index: 1; pointer-events: none; opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1s steps(4) infinite;
}
@keyframes grain { 0% { transform: translate(0, 0); } 25% { transform: translate(-3%, 2%); } 50% { transform: translate(2%, -3%); } 75% { transform: translate(-2%, -1%); } }

main, .nav, .footer { position: relative; z-index: 2; }

/* ---------- nav ---------- */
.nav {
  position: fixed; top: 14px; left: 50%; transform: translateX(-50%);
  width: min(1120px, calc(100% - 2 * 16px));
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px 10px 10px 22px;
  border: 1px solid var(--line); border-radius: 999px;
  background: rgba(10, 9, 16, 0.55);
  backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%);
  z-index: 10;
  transition: background .3s;
}
.nav.scrolled { background: rgba(10, 9, 16, 0.82); }
.brand { font-family: var(--serif); font-style: italic; font-size: 28px; line-height: 1; letter-spacing: -0.01em; }
.brand span { color: var(--hot); }
.brand-sm { font-size: 22px; }
.nav-links { display: flex; gap: 28px; font-size: 15px; color: var(--muted); }
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: var(--ink); }

/* ---------- buttons ---------- */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 999px;
  background: linear-gradient(135deg, var(--hot), #ff7a45);
  color: #fff; font-weight: 600; font-size: 16px;
  box-shadow: 0 10px 40px -10px rgba(255, 90, 78, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transition: transform .25s cubic-bezier(.2, .8, .2, 1), box-shadow .25s;
  overflow: hidden; isolation: isolate;
}
.btn::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.35) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .7s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 18px 50px -12px rgba(255, 90, 78, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.25); }
.btn:hover::after { transform: translateX(120%); }
.btn:hover svg { transform: translateX(3px); }
.btn svg { transition: transform .25s; }
.btn-sm { padding: 10px 20px; font-size: 15px; }
.btn-lg { padding: 18px 34px; font-size: 18px; }
.btn-ghost { padding: 14px 6px; color: var(--muted); font-weight: 500; border-bottom: 1px solid transparent; transition: color .2s, border-color .2s; }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink); }

/* ---------- hero ---------- */
.hero {
  min-height: 100svh; display: flex; align-items: center;
  padding: 120px var(--gutter) 80px;
  max-width: 1240px; margin: 0 auto; position: relative;
}
.hero-copy { max-width: 640px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 14px; border: 1px solid var(--line); border-radius: 999px;
  background: var(--glass); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  font-size: 14px; color: var(--muted); margin-bottom: 28px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--hot); box-shadow: 0 0 0 0 rgba(255, 90, 78, .6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(255, 90, 78, 0); } 100% { box-shadow: 0 0 0 0 rgba(255, 90, 78, 0); } }
h1 {
  font-size: clamp(44px, 7.2vw, 96px); line-height: 0.98; letter-spacing: -0.035em; font-weight: 600;
  margin-bottom: 26px;
  text-shadow: 0 2px 30px rgba(7, 6, 12, 0.6);
}
h1 em { font-size: 1.08em; letter-spacing: -0.01em; background: linear-gradient(100deg, var(--hot), var(--amber) 55%, var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; padding-right: .08em; }
.lead { font-size: clamp(17px, 1.5vw, 20px); color: var(--muted); max-width: 540px; margin-bottom: 36px; }
.cta-row { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; margin-bottom: 52px; }
.hero-facts { list-style: none; display: flex; gap: 36px; flex-wrap: wrap; }
.hero-facts li { display: flex; flex-direction: column; }
.hero-facts b { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.hero-facts span { font-size: 14px; color: var(--dim); }
.scroll-hint { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); width: 26px; height: 42px; border: 1.5px solid var(--line); border-radius: 14px; }
.scroll-hint span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--ink); animation: wheel 1.8s infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- marquee ---------- */
.marquee { border-block: 1px solid var(--line); background: rgba(10, 9, 16, 0.5); overflow: hidden; padding: 20px 0; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.marquee-track { display: flex; gap: 56px; width: max-content; animation: marquee 40s linear infinite; }
.marquee-track span { font-family: var(--serif); font-style: italic; font-size: clamp(24px, 3vw, 36px); color: var(--dim); white-space: nowrap; }
.marquee-track span:nth-child(3n+1) { color: var(--ink); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- sections ---------- */
.section { max-width: 1240px; margin: 0 auto; padding: clamp(90px, 12vw, 160px) var(--gutter) 0; }
.section-head { max-width: 760px; margin-bottom: 56px; }
.kicker { font-size: 13px; text-transform: uppercase; letter-spacing: 0.18em; color: var(--hot); font-weight: 600; margin-bottom: 18px; }
h2 { font-size: clamp(36px, 5vw, 64px); line-height: 1.02; letter-spacing: -0.03em; font-weight: 600; }
h2 em { font-size: 1.06em; }
.sub { color: var(--muted); font-size: 18px; margin-top: 20px; max-width: 580px; }

/* ---------- bento ---------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  position: relative; padding: 30px; border-radius: 26px;
  border: 1px solid var(--line); background: var(--glass);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transition: border-color .3s, transform .3s cubic-bezier(.2, .8, .2, 1);
  transform-style: preserve-3d; overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(255, 90, 78, 0.16), transparent 45%);
  opacity: 0; transition: opacity .3s;
}
.card:hover { border-color: rgba(255, 255, 255, 0.18); }
.card:hover::before { opacity: 1; }
.card-wide { grid-column: span 2; grid-row: span 2; display: flex; flex-direction: column; }
.card-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; margin-bottom: 26px; background: linear-gradient(135deg, rgba(255, 90, 78, .2), rgba(139, 123, 255, .15)); border: 1px solid var(--line); }
.card-icon svg { width: 24px; height: 24px; fill: none; stroke: var(--ink); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 22px; letter-spacing: -0.02em; font-weight: 600; margin-bottom: 10px; }
.card-wide h3 { font-size: clamp(26px, 3vw, 36px); }
.card p { color: var(--muted); font-size: 16px; }
.card-wide p { font-size: 18px; max-width: 460px; }
.chip-demo { margin-top: auto; padding-top: 40px; display: flex; gap: 10px; flex-wrap: wrap; }
.chip { padding: 12px 20px; border-radius: 14px; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.04); font-size: clamp(20px, 2.4vw, 30px); font-weight: 500; letter-spacing: -0.02em; animation: float 6s ease-in-out infinite; }
.chip:nth-child(2) { animation-delay: -1.5s; } .chip:nth-child(3) { animation-delay: -3s; } .chip:nth-child(4) { animation-delay: -4.5s; }
.chip b { color: var(--amber); font-weight: 600; }
.chip-hot { background: linear-gradient(135deg, var(--hot), #ff7a45); border-color: transparent; color: #fff; }
@keyframes float { 50% { transform: translateY(-8px); } }

/* ---------- builder ---------- */
.builder { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 18px; }
.builder-controls, .builder-output { border: 1px solid var(--line); border-radius: 26px; background: var(--glass); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.builder-controls { padding: 28px; display: flex; flex-direction: column; gap: 24px; }
.control-label { display: block; font-size: 13px; color: var(--dim); text-transform: uppercase; letter-spacing: .14em; margin-bottom: 10px; }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg button {
  font: inherit; font-size: 15px; font-weight: 500; color: var(--muted); cursor: pointer;
  padding: 10px 16px; border-radius: 12px; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.03);
  transition: all .2s;
}
.seg button:hover { color: var(--ink); border-color: rgba(255, 255, 255, .2); }
.seg button.on { color: #fff; background: var(--hot); border-color: var(--hot); box-shadow: 0 6px 24px -8px rgba(255, 90, 78, .8); }
.seg button:focus-visible, .btn:focus-visible, .btn-ghost:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }
.builder-output { padding: clamp(28px, 4vw, 48px); display: flex; flex-direction: column; justify-content: center; min-height: 300px; position: relative; overflow: hidden; }
.builder-output::before { content: ""; position: absolute; width: 360px; height: 360px; right: -120px; top: -140px; border-radius: 50%; background: radial-gradient(circle, rgba(139, 123, 255, .3), transparent 65%); pointer-events: none; }
.out-en { font-size: clamp(36px, 5vw, 64px); font-weight: 600; letter-spacing: -0.035em; line-height: 1.05; min-height: 1.1em; }
.out-en .w { display: inline-block; animation: pop .45s cubic-bezier(.2, 1.4, .4, 1) both; }
.out-en mark { background: none; color: transparent; background-image: linear-gradient(100deg, var(--hot), var(--amber)); -webkit-background-clip: text; background-clip: text; }
@keyframes pop { from { opacity: 0; transform: translateY(18px) rotateX(60deg); filter: blur(6px); } }
.out-uz { margin-top: 14px; font-family: var(--serif); font-style: italic; font-size: clamp(22px, 2.4vw, 30px); color: var(--muted); }
.out-rule { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 15px; color: var(--dim); }
.out-rule b { color: var(--amber); font-weight: 600; }

/* ---------- course ---------- */
.course { display: grid; grid-template-columns: 1fr auto; gap: clamp(40px, 6vw, 100px); align-items: center; }
.course-copy .btn { margin-top: 32px; }
.course h2 { font-size: clamp(48px, 7vw, 92px); }
.phone {
  width: 320px; padding: 14px; border-radius: 46px; position: relative;
  background: linear-gradient(160deg, #2a2536, #0f0d16);
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 60px 120px -30px rgba(255, 90, 78, .35), 0 30px 60px -20px rgba(0, 0, 0, .8);
  transform: perspective(1200px) rotateY(-14deg) rotateX(6deg);
  transition: transform .6s cubic-bezier(.2, .8, .2, 1);
}
.phone:hover { transform: perspective(1200px) rotateY(-4deg) rotateX(2deg); }
.phone-notch { position: absolute; top: 24px; left: 50%; width: 90px; height: 24px; margin-left: -45px; border-radius: 12px; background: #000; z-index: 1; }
.phone-screen { border-radius: 34px; background: #f7f6f2; color: #16141c; padding: 62px 18px 22px; }
.ph-title { font-family: var(--serif); font-size: 32px; line-height: 1; }
.ph-sub { font-size: 13px; color: #7a7684; margin: 4px 0 20px; }
.unit { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 16px; background: #fff; margin-bottom: 8px; box-shadow: 0 1px 2px rgba(0, 0, 0, .05); font-size: 14px; }
.unit > div { flex: 1; min-width: 0; }
.unit b { display: block; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.unit i { display: block; height: 4px; margin-top: 7px; border-radius: 2px; background: linear-gradient(90deg, var(--hot) var(--p), #ebe8e1 var(--p)); }
.unit-n { width: 30px; height: 30px; flex: none; display: grid; place-items: center; border-radius: 10px; background: #f0ede6; font-weight: 600; font-size: 13px; }
.unit.active { outline: 2px solid var(--hot); }
.unit.active .unit-n { background: var(--hot); color: #fff; }
.unit-ok { color: #1f9d55; font-weight: 700; }
.unit-pct { color: var(--hot); font-weight: 600; font-size: 13px; }
.ph-btn { margin-top: 14px; padding: 14px; text-align: center; border-radius: 14px; background: #16141c; color: #fff; font-weight: 600; font-size: 15px; }

/* ---------- steps ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: s; }
.step { padding: 32px 30px 36px; border-radius: 26px; border: 1px solid var(--line); background: var(--glass); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); position: relative; overflow: hidden; }
.step-n { display: block; font-family: var(--serif); font-style: italic; font-size: 72px; line-height: 1; margin-bottom: 30px; background: linear-gradient(180deg, var(--ink), rgba(244, 241, 234, .15)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.step h3 { font-size: 24px; letter-spacing: -0.02em; font-weight: 600; margin-bottom: 8px; }
.step p { color: var(--muted); }
.step p b { color: var(--ink); font-weight: 600; }

/* ---------- final ---------- */
.final { text-align: center; max-width: 900px; margin: 0 auto; padding: clamp(120px, 16vw, 220px) var(--gutter) clamp(100px, 12vw, 160px); }
.final h2 { font-size: clamp(44px, 7vw, 96px); margin-bottom: 22px; }
.final p { color: var(--muted); font-size: 19px; margin-bottom: 40px; }

/* ---------- footer ---------- */
.footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; max-width: 1240px; margin: 0 auto; padding: 28px var(--gutter) 40px; border-top: 1px solid var(--line); color: var(--dim); font-size: 14px; }
.footer a:hover { color: var(--ink); }

/* ---------- reveal ---------- */
.js .reveal { opacity: 0; transform: translateY(36px); transition: opacity 1s cubic-bezier(.2, .8, .2, 1), transform 1s cubic-bezier(.2, .8, .2, 1); transition-delay: var(--d, 0s); }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 960px) {
  .nav-links { display: none; }
  .bento { grid-template-columns: 1fr 1fr; }
  .card-wide { grid-column: span 2; grid-row: auto; }
  .builder { grid-template-columns: 1fr; }
  .course { grid-template-columns: 1fr; justify-items: center; }
  .course-copy { justify-self: stretch; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .nav { padding-left: 18px; }
  .hero { padding-top: 110px; align-items: flex-end; padding-bottom: 96px; }
  .hero-facts { gap: 22px; }
  .hero-facts b { font-size: 18px; }
  .bento { grid-template-columns: 1fr; }
  .card-wide { grid-column: auto; }
  .card { padding: 24px; }
  .phone { width: min(300px, 100%); transform: none; }
  .phone:hover { transform: none; }
  .btn-lg { padding: 16px 28px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; animation-iteration-count: 1 !important; transition-duration: .001s !important; }
  html { scroll-behavior: auto; }
}