/* ========== ECU Diagnostics — neon glow system ========== */
:root {
  --bg: #05070c;
  --bg-2: #0a0e16;
  --surface: rgba(14, 18, 28, 0.82);
  --surface-solid: #111622;
  --line: rgba(196, 77, 255, 0.12);
  --line-strong: rgba(0, 229, 255, 0.32);
  --text: #f0f2f7;
  --muted: #8f97ab;
  --purple: #c44dff;
  --cyan: #00e5ff;
  --grad: linear-gradient(135deg, #c44dff 0%, #7c3aed 48%, #00e5ff 100%);
  --text-grad: linear-gradient(90deg, #e879f9, #c44dff 45%, #00e5ff);
  --glow-purple: 0 0 28px rgba(196, 77, 255, 0.35), 0 0 60px rgba(196, 77, 255, 0.12);
  --glow-cyan: 0 0 24px rgba(0, 229, 255, 0.25), 0 0 48px rgba(0, 229, 255, 0.1);
  --glow-mix: 0 0 32px rgba(196, 77, 255, 0.28), 0 0 64px rgba(0, 229, 255, 0.12);
  --r: 16px;
  --wrap: 1080px;
  --header: 72px;
  --section: 96px;
  --gap: 20px;
  --font: "Manrope", system-ui, -apple-system, sans-serif;
  --shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header) + 12px);
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* Ambient background glow */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(196, 77, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 55% at 50% 10%, black 15%, transparent 72%);
}

.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  z-index: -1;
  pointer-events: none;
}

.bg-glow--a {
  width: 520px;
  height: 520px;
  top: -180px;
  right: -140px;
  background: var(--purple);
  opacity: 0.2; /* softer — no purple “panel” behind logo */
}

.bg-glow--b {
  width: 400px;
  height: 400px;
  bottom: 12%;
  left: -120px;
  background: #0088aa;
  opacity: 0.22;
}

.wrap {
  width: min(100% - 40px, var(--wrap));
  margin-inline: auto;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header);
  background: rgba(5, 7, 12, 0.78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
}

.header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(5, 7, 12, 0.92);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35), 0 0 40px rgba(196, 77, 255, 0.06);
}

.header__row {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__icon {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(196, 77, 255, 0.4));
}

.brand--sm .brand__icon {
  width: 28px;
  height: 28px;
}

.brand__name {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
  color: var(--text);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px 28px;
}

.nav > a:not(.btn) {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.15s, text-shadow 0.15s;
}

.nav > a:not(.btn):hover {
  color: var(--text);
  text-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
}

.burger {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.burger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* Type */
.kicker {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
  text-shadow: 0 0 18px rgba(0, 229, 255, 0.55), 0 0 36px rgba(0, 229, 255, 0.2);
}

h1, h2, h3 {
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 16px; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 10px; }
h3 { font-size: 1.05rem; margin-bottom: 8px; font-weight: 700; letter-spacing: -0.02em; }

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 34rem;
  margin-bottom: 28px;
  line-height: 1.6;
}

.muted { color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s, box-shadow 0.2s, background 0.15s, border-color 0.15s;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }

.btn--sm {
  height: 40px;
  padding: 0 16px;
  font-size: 0.875rem;
}

.btn--primary {
  background: var(--grad);
  color: #0a0a12;
  box-shadow: 0 6px 24px rgba(196, 77, 255, 0.4), 0 0 40px rgba(0, 229, 255, 0.12);
}

.btn--primary:hover {
  box-shadow: 0 10px 32px rgba(196, 77, 255, 0.5), 0 0 48px rgba(0, 229, 255, 0.22);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(0, 229, 255, 0.35);
  color: var(--text);
  box-shadow: 0 0 0 rgba(0, 229, 255, 0);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
  box-shadow: var(--glow-cyan);
}

.btn--block { width: 100%; }

/* Language switch */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 255, 0.4);
  background: rgba(0, 229, 255, 0.07);
  color: var(--cyan);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  white-space: nowrap;
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.12);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s, transform 0.15s;
}

.lang-switch:hover {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.14);
  box-shadow: var(--glow-cyan);
  transform: translateY(-1px);
}

/* Pills */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(196, 77, 255, 0.2);
  background: rgba(196, 77, 255, 0.06);
  color: var(--muted);
  font-size: 0.8125rem;
  font-weight: 600;
  box-shadow: 0 0 16px rgba(196, 77, 255, 0.08);
  transition: border-color 0.15s, box-shadow 0.15s, color 0.15s;
}

.pill:hover {
  border-color: rgba(0, 229, 255, 0.35);
  color: var(--text);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
}

/* Hero */
.hero {
  padding: 48px 0 80px;
  border-bottom: 1px solid var(--line);
  position: relative;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  min-height: 440px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.hero__art {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 440px;
}

.hero__glow {
  position: absolute;
  width: 75%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(196, 77, 255, 0.32) 0%,
    rgba(0, 229, 255, 0.1) 45%,
    transparent 72%
  );
  filter: blur(28px);
  z-index: 0;
  pointer-events: none;
  animation: pulse-orb 6s ease-in-out infinite;
}

.hero__logo {
  position: relative;
  z-index: 1;
  width: min(380px, 92%);
  height: auto;
  object-fit: contain;
  /* pure SVG — sharp, no raster/mix-blend hacks */
  filter: drop-shadow(0 0 24px rgba(196, 77, 255, 0.3));
  animation: float 7s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulse-orb {
  0%, 100% { opacity: 0.65; transform: scale(1); }
  50% { opacity: 0.95; transform: scale(1.04); }
}

/* Sections */
.section {
  padding: var(--section) 0;
  position: relative;
}

.section--tint {
  background: linear-gradient(180deg, transparent, rgba(12, 16, 28, 0.9), transparent);
  border-block: 1px solid var(--line);
}

.section__head {
  max-width: 520px;
  margin: 0 auto 40px;
  text-align: center;
}

.section__desc {
  color: var(--muted);
  font-size: 1rem;
}

/* Cards with glow */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 24px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.25s;
}

.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: var(--glow-mix), var(--shadow);
}

.card--link { cursor: pointer; }

.card__ico {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.22);
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.15);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.card:hover .card__ico {
  border-color: rgba(196, 77, 255, 0.4);
  color: #e9d5ff;
  box-shadow: 0 0 22px rgba(196, 77, 255, 0.35);
}

.card__ico svg { width: 22px; height: 22px; }

.card p {
  color: var(--muted);
  font-size: 0.9375rem;
  flex: 1;
}

.card__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.card strong {
  font-size: 1.05rem;
  font-weight: 700;
}

/* Course */
.course {
  display: grid;
  grid-template-columns: 1.45fr 0.7fr;
  gap: var(--gap);
  align-items: start;
}

.course__main,
.course__side {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 28px;
  backdrop-filter: blur(12px);
}

.course__main {
  border-color: rgba(196, 77, 255, 0.35);
  box-shadow: var(--glow-mix), var(--shadow);
  position: relative;
  overflow: hidden;
}

.course__main::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  box-shadow: 0 0 16px rgba(196, 77, 255, 0.6), 0 0 32px rgba(0, 229, 255, 0.3);
}

.course__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.course__bar span {
  height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 255, 0.2);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--muted);
  background: rgba(0, 229, 255, 0.04);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.08);
}

.course__price {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 20px;
  margin-bottom: 24px;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid rgba(196, 77, 255, 0.35);
  background: linear-gradient(135deg, rgba(196, 77, 255, 0.12), rgba(0, 229, 255, 0.06));
  box-shadow: 0 0 28px rgba(196, 77, 255, 0.15);
}

.course__price-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.course__price-main strong {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--text-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 12px rgba(196, 77, 255, 0.35));
}

.course__price-alt {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.course__price-alt span {
  height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 229, 255, 0.25);
  background: rgba(0, 229, 255, 0.06);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.1);
}

.course__title {
  font-size: 1.15rem;
  margin-bottom: 16px;
}

.program {
  display: flex;
  flex-direction: column;
  counter-reset: p;
  margin-bottom: 24px;
}

.program > li {
  counter-increment: p;
  display: grid;
  grid-template-columns: 40px 1fr;
  column-gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.program > li:last-child { border-bottom: 0; }

.program > li::before {
  content: counter(p, decimal-leading-zero);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--cyan);
  padding-top: 2px;
  grid-row: 1 / span 2;
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.55);
}

.program strong {
  grid-column: 2;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.program span {
  grid-column: 2;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.45;
}

.course__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.course__signup { display:flex; flex-direction:column; align-items:flex-end; gap:10px; text-align:right; }
.course__start-date { color:var(--muted); font-size:0.9rem; font-weight:800; line-height:1.35; letter-spacing:0.06em; }
.course__start-date span { display:inline-block; color:var(--text); font-size:clamp(1.35rem,2.4vw,1.8rem); letter-spacing:0; white-space:nowrap; }

.course__loc {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.course__loc strong { font-size: 1.05rem; }
.course__loc .muted { font-size: 0.8125rem; }

.course__side {
  position: sticky;
  top: calc(var(--header) + 16px);
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow: 0 0 28px rgba(0, 229, 255, 0.08);
  transition: box-shadow 0.2s, border-color 0.2s;
}

.course__side:hover {
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: var(--glow-cyan);
}

.course__side .kicker { margin-bottom: 8px; }
.course__side > .muted { margin: 8px 0 16px; font-size: 0.9375rem; }

.ticks {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.ticks li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  font-weight: 500;
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 10px rgba(196, 77, 255, 0.7);
}

.price {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--text-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 12px rgba(196, 77, 255, 0.35));
  margin-bottom: 16px;
}

/* Video */
.video-feature {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: var(--gap);
  padding: 24px;
  background: var(--surface);
  border: 1px solid rgba(196, 77, 255, 0.3);
  border-radius: var(--r);
  box-shadow: var(--glow-mix);
  backdrop-filter: blur(12px);
}

.video-feature video,
.video-card video {
  width: 100%;
  display: block;
  background: #000;
  border-radius: 12px;
  border: 1px solid var(--line);
}

/* вертикальные ролики: 9:16, cover совпадает с форматом — без обрезки */
.video-feature video {
  aspect-ratio: 9 / 16;
  object-fit: cover;
  max-height: 480px;
  margin-inline: auto;
}

.video-card video {
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

.video-feature__meta h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.video-feature__meta .muted { font-size: 1rem; line-height: 1.6; }

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.video-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 12px;
  backdrop-filter: blur(12px);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.25s;
}

.video-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: var(--glow-mix), var(--shadow);
}

.video-card h3 {
  font-size: 0.95rem;
  margin: 12px 4px 4px;
}

.video-card .muted {
  font-size: 0.85rem;
  margin: 0 4px;
}

/* About */
.about {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.about__text {
  font-size: 1.05rem;
  max-width: 36rem;
  margin: 12px 0 24px;
  line-height: 1.65;
}

.about__panel {
  background: var(--surface);
  border: 1px solid rgba(196, 77, 255, 0.25);
  border-radius: var(--r);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  min-height: 180px;
  box-shadow: var(--glow-mix);
  backdrop-filter: blur(12px);
  text-align: center;
}

.about__mark {
  width: 72px;
  height: 72px;
  filter: drop-shadow(0 0 14px rgba(196, 77, 255, 0.4));
}

.about__quote {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.45;
  max-width: 18rem;
  letter-spacing: -0.02em;
}

.contact__hint {
  font-size: 0.875rem;
  margin-top: 4px;
  display: block;
}

/* Contact */
.contact-grid { margin-bottom: 20px; }

.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding: 28px;
  border-radius: var(--r);
  background: linear-gradient(135deg, rgba(196, 77, 255, 0.14), rgba(0, 229, 255, 0.07));
  border: 1px solid rgba(196, 77, 255, 0.3);
  box-shadow: var(--glow-mix);
}

.banner h3 { margin-bottom: 4px; font-size: 1.15rem; }

/* Footer */
.footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
  box-shadow: 0 -12px 40px rgba(196, 77, 255, 0.04);
}

.footer__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer__links {
  display: flex;
  gap: 20px;
}

.footer__links a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.15s, text-shadow 0.15s;
}

/* Реквизиты ИП в подвале: подпись слева, значение справа; на телефоне — друг под другом */
.footer__req {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.footer__req dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 18px;
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--muted);
}
.footer__req dt { font-weight: 600; }
.footer__req dd { margin: 0; }
.footer__req a { color: inherit; }

.footer__links a:hover {
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.5);
}


.program__points {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 8px 0 0;
  list-style: none;
}
.program .program__points li {
  display: block;
  position: relative;
  padding: 0 0 0 16px;
  border: 0;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--text);
  opacity: 0.88;
}
.program .program__points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--purple);
  text-shadow: none;
}

.pill--start { color: var(--text); border-color: var(--line-strong); background: rgba(0, 229, 255, 0.08); }

.course-more { margin-top: 40px; }
.course-more .kicker { margin-bottom: 14px; }
.course-more .card h3 { font-size: 1.05rem; margin-bottom: 14px; }
.course-more .ticks { margin-bottom: 0; }

.faq { margin-top: 40px; max-width: 760px; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  cursor: pointer;
  padding: 16px 28px 16px 0;
  font-weight: 700;
  font-size: 0.95rem;
  list-style: none;
  position: relative;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 14px;
  color: var(--cyan);
  font-weight: 800;
}
.faq__item[open] summary::after { content: "−"; }
.faq__item p { padding: 0 0 16px; color: var(--muted); font-size: 0.9rem; line-height: 1.55; }
.faq .btn { margin-top: 24px; }

/* Responsive */
@media (max-width: 960px) {
  :root { --section: 72px; }

  .hero__grid,
  .about,
  .course {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 32px 0 56px;
  }

  .hero__grid {
    min-height: 0;
    gap: 28px;
  }

  .hero__art {
    order: -1;
    min-height: 260px;
  }

  .hero__logo { width: min(300px, 80%); }

  .grid-3 { grid-template-columns: 1fr 1fr; }
  .video-feature { grid-template-columns: 1fr; }
  .video-feature video { max-height: none; max-width: 360px; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .course__side { position: static; }
}

@media (max-width: 720px) {
  .wrap { width: min(100% - 28px, var(--wrap)); }
  :root { --section: 64px; --gap: 14px; }

  .burger { display: flex; }

  .nav {
    position: fixed;
    inset: var(--header) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 20px;
    background: rgba(5, 7, 12, 0.97);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: 0.25s ease;
  }

  .nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav > a:not(.btn) {
    padding: 14px 4px;
    border-bottom: 1px solid var(--line);
  }

  .nav .btn {
    margin-top: 12px;
    width: 100%;
  }

  .header__actions .lang-switch {
    padding: 0 10px;
    height: 34px;
  }

  .grid-3,
  .contact-grid,
  .video-grid {
    grid-template-columns: 1fr;
  }

  .video-feature video { max-width: 100%; }

  .hero__cta .btn { width: 100%; }
  .banner { flex-direction: column; align-items: flex-start; }
  .banner .btn { width: 100%; }
  .footer__row { flex-direction: column; text-align: center; }
  .footer__req dl { grid-template-columns: 1fr; gap: 2px; text-align: center; }
  .footer__req dd { margin-bottom: 8px; }
  .brand { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero__logo,
  .hero__glow { animation: none; }
  .btn:hover, .card:hover { transform: none; }
}