:root {
  --bg: #0a0c0b;
  --paper: #121614;
  --paper-2: #171c19;
  --line: rgba(229, 239, 216, .13);
  --text: #f2f5ef;
  --muted: #a5aca3;
  --lime: #c5fa62;
  --lime-dark: #9bc84c;
  --radius: 22px;
  --mono: "DM Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: Manrope, Arial, sans-serif; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
.wrap { width: min(1180px, calc(100% - 32px)); margin: auto; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.mono, .eyebrow { font-family: var(--mono); }
.eyebrow { color: var(--lime); text-transform: uppercase; letter-spacing: .12em; font-size: 12px; margin: 0 0 14px; }
h1, h2, h3 { letter-spacing: -.03em; line-height: 1.05; margin: 0 0 16px; }
h1 { font-size: clamp(42px, 6.4vw, 84px); font-weight: 800; }
h1 em { font-style: normal; color: var(--lime); }
h2 { font-size: clamp(32px, 4.4vw, 56px); font-weight: 800; }
h3 { font-size: 21px; font-weight: 700; letter-spacing: -.01em; }

/* nav */
.nav { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(14px); background: rgba(10, 12, 11, .78); border-bottom: 1px solid var(--line); }
.nav-in { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 11px; font-size: 18px; font-weight: 800; letter-spacing: -.8px; }
.brand-mark { width: 25px; height: 25px; border-radius: 50% 50% 50% 4px; background: var(--lime); }
.nav-links { display: flex; gap: 28px; font-size: 15px; color: var(--muted); }
.nav-links a:hover { color: var(--text); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid transparent; border-radius: 999px; padding: 15px 24px; font: 700 15px/1 Manrope, sans-serif; cursor: pointer; transition: transform .15s, background .15s, border-color .15s; }
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: 11px 18px; font-size: 14px; }
.btn-lime { background: var(--lime); color: #0a0c0b; }
.btn-lime:hover { background: #d6ff86; }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--lime); }
.btn-dark { background: #0a0c0b; color: var(--lime); }

/* hero */
.hero { padding: 72px 0 56px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; }
.lead { font-size: 19px; color: var(--muted); max-width: 580px; margin: 0 0 30px; }
.lead-sm { font-size: 18px; color: var(--muted); max-width: 640px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font: 500 13px var(--mono); color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; }
.hero-phone { position: relative; display: flex; justify-content: center; }
.hero-glow { position: absolute; inset: 10% -10%; background: radial-gradient(circle, rgba(197, 250, 98, .22), transparent 62%); filter: blur(30px); z-index: -1; }

/* phone frames */
.phone { position: relative; aspect-ratio: 9 / 16; border-radius: 30px; overflow: hidden; background: #000; border: 1px solid rgba(255, 255, 255, .16); box-shadow: 0 30px 80px rgba(0, 0, 0, .55), inset 0 0 0 6px #050605; }
.phone video, .phone img { width: 100%; height: 100%; object-fit: cover; }
.phone-hero { width: min(330px, 78vw); transform: rotate(2deg); }
.phone-play { position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); white-space: nowrap; background: rgba(10, 12, 11, .78); color: var(--text); border: 1px solid var(--line); border-radius: 999px; padding: 10px 16px; font: 600 13px Manrope, sans-serif; cursor: pointer; backdrop-filter: blur(8px); }
.phone-play:hover { border-color: var(--lime); color: var(--lime); }

/* sections */
.section { padding: 96px 0; border-top: 1px solid var(--line); }
.section-alt { background: var(--paper); }
.section-head { max-width: 760px; margin-bottom: 40px; }

/* reels gallery */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filter { background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 9px 16px; font: 600 14px Manrope, sans-serif; cursor: pointer; }
.filter.is-on, .filter:hover { color: #0a0c0b; background: var(--lime); border-color: var(--lime); }
.reels { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.reel-cta { display: flex; flex-direction: column; justify-content: flex-end; gap: 12px; aspect-ratio: 9 / 16; border-radius: 24px; padding: 24px; background: var(--lime); color: #0a0c0b; }
.reel-cta h3 { font-size: 26px; margin: 0; }
.reel-cta p { margin: 0; color: #2b3320; }
.reel-cta .btn { align-self: flex-start; }
.reel { all: unset; cursor: pointer; display: block; }
.reel .phone { border-radius: 24px; transition: transform .2s, box-shadow .2s; }
.reel:hover .phone, .reel:focus-visible .phone { transform: translateY(-4px); box-shadow: 0 30px 80px rgba(0, 0, 0, .6), 0 0 0 2px var(--lime); }
.reel-meta { display: flex; justify-content: space-between; gap: 10px; margin-top: 12px; }
.reel-title { font-weight: 700; font-size: 15px; line-height: 1.3; }
.reel-tag { font: 500 12px var(--mono); color: var(--lime); white-space: nowrap; }
.reel .badge { position: absolute; top: 12px; left: 12px; font: 500 11px var(--mono); background: rgba(10, 12, 11, .72); border-radius: 999px; padding: 5px 9px; color: var(--text); }
.reel .play { position: absolute; inset: auto 12px 12px auto; width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--lime); color: #0a0c0b; font-size: 14px; opacity: 0; transition: opacity .2s; }
.reel:hover .play, .reel:focus-visible .play { opacity: 1; }

/* steps & cards */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.steps li, .card, .project { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.section-alt .card, .section-alt .project, .section-alt .steps li { background: var(--bg); }
.steps p, .card p, .project p { color: var(--muted); margin: 0; }
.num { display: block; font: 500 13px var(--mono); color: var(--lime); margin-bottom: 26px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card-lime { background: var(--lime) !important; color: #0a0c0b; display: flex; flex-direction: column; gap: 14px; }
.card-lime p { color: #2b3320; }
.card-lime .btn { align-self: flex-start; margin-top: auto; }
.projects { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin: 18px 0 30px; }

/* forms */
.form-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
.form { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: grid; gap: 16px; }
.section-alt .form { background: var(--bg); }
.form-title { margin: 0; }
.form label { display: grid; gap: 7px; font-size: 14px; font-weight: 600; }
.form .opt { color: var(--muted); font-weight: 500; }
.form input, .form select, .form textarea { width: 100%; background: #0d100e; color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 13px 14px; font: 500 16px Manrope, sans-serif; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--lime); }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; color: var(--muted); }
.form .check input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--lime); }
.form .check a { color: var(--lime); }
.form .btn { justify-self: start; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-msg { margin: 0; min-height: 1.4em; font-weight: 600; }
.form-msg.ok { color: var(--lime); }
.form-msg.err { color: #ff8f8f; }
.form.is-sent > :not(.form-msg):not(.form-title) { display: none; }

/* course */
.kurs { background: radial-gradient(900px 400px at 15% 0%, rgba(197, 250, 98, .09), transparent 60%); }
.ticks { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 10px; }
.ticks li { padding-left: 30px; position: relative; color: var(--text); }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--lime); font-weight: 800; }
.waitlist .bar { height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; }
.waitlist .bar span { display: block; height: 100%; width: 0; background: var(--lime); transition: width 1s; }
.waitlist p { color: var(--muted); font-size: 14px; }

/* about & footer */
.about { max-width: 820px; }
.footer { border-top: 1px solid var(--line); padding: 48px 0; }
.footer-in { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); font-size: 15px; }
.footer-links a:hover { color: var(--lime); }

/* player */
.player { border: 0; padding: 0; background: transparent; max-width: none; max-height: none; width: 100vw; height: 100vh; overflow: hidden; }
.player[open] { display: flex; align-items: center; justify-content: center; gap: 18px; flex-direction: row; }
.player::backdrop { background: rgba(4, 5, 4, .9); backdrop-filter: blur(6px); }
.phone-player { height: min(86vh, 900px); width: auto; }
.player-title { position: absolute; bottom: 14px; left: 0; right: 0; text-align: center; color: var(--muted); margin: 0; font-size: 14px; }
.player-x, .player-nav { background: rgba(255, 255, 255, .08); color: var(--text); border: 1px solid var(--line); border-radius: 50%; width: 48px; height: 48px; font-size: 22px; cursor: pointer; }
.player-x { position: absolute; top: 18px; right: 18px; }
.player-x:hover, .player-nav:hover { border-color: var(--lime); color: var(--lime); }

/* responsive */
@media (max-width: 960px) {
  .hero-grid, .form-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
  .reels { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .nav-links { display: none; }
}
@media (max-width: 620px) {
  .section { padding: 64px 0; }
  .hero { padding-top: 36px; }
  .phone-hero { width: min(250px, 64vw); }
  .steps, .cards, .projects, .row2 { grid-template-columns: 1fr; }
  .reels { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 14px; padding-bottom: 8px; margin-right: -16px; }
  .reel, .reel-cta { flex: 0 0 62%; scroll-snap-align: start; }
  .player-nav { position: absolute; bottom: 50%; }
  .player-nav.prev { left: 6px; }
  .player-nav.next { right: 6px; }
  .phone-player { height: auto; width: 92vw; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .reel .phone { transition: none; }
}