/* ============================================================
   Fuse v2 — редизайн лендинга
   Графит почти чёрный, лавандовый CTA, красный — только C4.
   ============================================================ */

:root {
  --bg: #0b0b0f;
  --bg-raise: #111118;
  --panel: #14141d;
  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.05);

  --text: #f4f4f8;
  --muted: #a2a2b1;
  --faint: #7c7c8a;

  --cta: #b7a6ff;
  --cta-hover: #cabdff;
  --cta-ink: #1a1330;

  --purple: #6d28d9;
  --purple-soft: rgba(124, 58, 237, 0.28);

  --red: #ff3b3b;
  --red-line: rgba(255, 59, 59, 0.5);

  --radius: 16px;
  --radius-lg: 22px;

  --font-display: "Inter", ui-sans-serif, system-ui, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: ui-sans-serif, system-ui, "Segoe UI", Roboto, Arial, sans-serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #0b0d12;
  isolation: isolate;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  overflow-x: clip;
}

body::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: min(1050px, 135vh);
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 75% 0%, #505a861f, transparent 62%),
    repeating-linear-gradient(90deg, #c6ceef0a 0 1px, transparent 1px 56px),
    repeating-linear-gradient(0deg, #c6ceef0a 0 1px, transparent 1px 56px),
    #11141e;
  -webkit-mask-image: linear-gradient(#000, transparent);
  mask-image: linear-gradient(#000, transparent);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  margin: 0;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

::selection {
  background: var(--cta);
  color: var(--cta-ink);
}

:focus-visible {
  outline: 2px solid var(--cta-hover);
  outline-offset: 3px;
  border-radius: 6px;
}

.container {
  width: min(1160px, 100% - 40px);
  margin-inline: auto;
}

section {
  scroll-margin-top: 88px;
}

/* ---------- Кнопки и ссылки ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--cta);
  color: var(--cta-ink);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  line-height: 1;
  text-decoration: none;
  padding: 16px 24px;
  border-radius: 12px;
  border: 1px solid transparent;
  box-shadow: 0 10px 32px rgba(124, 58, 237, 0.38);
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
  background: var(--cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 14px 40px rgba(124, 58, 237, 0.48);
}

.btn:active {
  transform: translateY(0);
}

.btn-small {
  padding: 10px 18px;
  font-size: 14px;
  box-shadow: none;
}

.link-quiet {
  color: var(--text);
  font-size: 15px;
  text-decoration: underline;
  text-decoration-color: rgba(183, 166, 255, 0.55);
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}

.link-quiet:hover {
  color: var(--cta-hover);
  text-decoration-color: var(--cta-hover);
}

/* ---------- Шапка ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 18, 0.74);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-right: auto;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
  letter-spacing: -0.01em;
}

.nav {
  display: none;
  gap: 26px;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.18s ease;
}

.nav a:hover {
  color: var(--text);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(44px, 7vh, 88px) 0 clamp(52px, 8vh, 100px);
}

.hero-grid {
  position: relative;
  display: grid;
  gap: 44px;
}

.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cta);
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(42px, 9vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.lead {
  font-size: clamp(16px, 2.4vw, 19px);
  line-height: 1.6;
  color: var(--muted);
  margin-top: 20px;
  max-width: 34em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  margin-top: 32px;
}

.hero-meta {
  margin-top: 18px;
  font-size: 13px;
  color: var(--faint);
}

/* Игровая сцена */

.scene-wrap {
  margin: 8px 0 0;
}

.scene-frame {
  position: relative;
}

.scene {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-raise);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.scene-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.c4-chip {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border-radius: 12px;
  background: rgba(10, 10, 15, 0.74);
  border: 1px solid var(--red-line);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.c4-tag {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--red);
  border: 1px solid var(--red-line);
  border-radius: 6px;
  padding: 3px 8px;
}

.c4-time {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 6.5vw, 38px);
  line-height: 1;
  color: var(--red);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.mvp-chip {
  width: min(240px, 62%);
  margin-top: -34px;
  margin-left: 14px;
  position: relative;
  z-index: 2;
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.55);
}

.scene-wrap figcaption {
  margin-top: 18px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--faint);
  max-width: 40em;
}

/* ---------- Заголовки секций ---------- */

.section-head {
  padding-bottom: clamp(24px, 4vw, 40px);
}

.section-head h2 {
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.1;
  max-width: 20em;
}

.section-sub {
  margin-top: 14px;
  font-size: clamp(15px, 2vw, 17px);
  max-width: 36em;
}

/* ---------- Функции ---------- */

.feature {
  display: grid;
  gap: 26px;
  padding-block: clamp(36px, 6vw, 64px);
  border-top: 1px solid var(--line);
  align-items: center;
}

.feature-text h3 {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.15;
  margin-bottom: 14px;
}

.feature-text p + p {
  margin-top: 12px;
}

.feature-text .note {
  padding-left: 14px;
  border-left: 2px solid var(--purple);
  color: var(--muted);
  font-size: 14.5px;
}

.mini-scene {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-raise);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45);
}

.mini-scene img {
  width: 100%;
  height: clamp(230px, 34vw, 340px);
  object-fit: cover;
  object-position: 58% 38%;
}

.c4-chip--mini {
  top: auto;
  bottom: 16px;
  left: 16px;
  right: auto;
}

.c4-chip--mini .c4-time {
  font-size: clamp(22px, 4.5vw, 30px);
}

/* Плейлист */

.playlist {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
}

.playlist-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.playlist-head > span:first-child {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.playlist-badge {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--cta);
  border: 1px solid rgba(183, 166, 255, 0.35);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}

.playlist-tracks {
  list-style: none;
  margin: 0;
  padding: 0;
}

.playlist-tracks li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
  color: var(--muted);
}

.playlist-tracks li.is-active {
  color: var(--text);
  font-weight: 600;
}

.eq {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
  height: 14px;
}

.eq i {
  width: 3px;
  border-radius: 2px;
  background: var(--cta);
  height: 40%;
}

.eq i:nth-child(2) {
  height: 90%;
}

.eq i:nth-child(3) {
  height: 60%;
}

.playlist-add {
  margin-top: 16px;
  padding: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  text-align: center;
  font-size: 13.5px;
  color: var(--faint);
}

/* Карточки MVP: горизонтальная и вертикальная рядом */

.mvp-duo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.mvp-shot {
  margin: 0;
  padding: 12px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.5);
}

.mvp-shot img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.mvp-shot figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 13px;
  color: var(--faint);
}

.mvp-shot--tall {
  width: 100%;
  max-width: 340px;
  margin-inline: auto;
}

/* ---------- Интерфейс ---------- */

.studio {
  padding-block: clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--line-soft);
}

.studio-shot {
  margin: 0;
}

.studio-shot img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 28px 72px rgba(0, 0, 0, 0.55);
  background: var(--bg-raise);
}

.studio-shot figcaption {
  margin-top: 16px;
  font-size: 13px;
  color: var(--faint);
}

/* ---------- Быстрый старт ---------- */

.start {
  padding-block: clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--line-soft);
}

.steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 46px;
  font-size: 15px;
  line-height: 1.6;
  max-width: 34em;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--cta);
  background: rgba(183, 166, 255, 0.1);
  border: 1px solid rgba(183, 166, 255, 0.35);
  border-radius: 9px;
}

.steps strong {
  color: var(--text);
  font-weight: 600;
}

.start-note {
  margin-top: 30px;
  font-size: 13.5px;
  color: var(--faint);
}

/* ---------- Финальный CTA ---------- */

.final {
  padding-block: clamp(48px, 8vw, 96px);
}

.final-panel {
  position: relative;
  overflow: hidden;
  text-align: center;
  background:
    linear-gradient(145deg, #1a1d2b, #10121a 70%);
  border: 1px solid rgba(183, 166, 255, 0.22);
  border-radius: 28px;
  padding: clamp(44px, 7vw, 80px) clamp(20px, 5vw, 64px);
}

.final-panel h2 {
  font-size: clamp(30px, 5.4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.final-sub {
  margin-top: 16px;
  font-size: clamp(15px, 2.2vw, 18px);
}

.final-panel .btn {
  margin-top: 32px;
}

.final-panel .hero-meta {
  margin-top: 16px;
}

.fineprint {
  margin: 26px auto 0;
  max-width: 52em;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--faint);
}

/* ---------- Подвал ---------- */

.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 26px 0 34px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  justify-content: space-between;
  font-size: 13px;
  color: var(--faint);
}

/* ---------- Анимации ---------- */

@keyframes eq-bounce {
  0%, 100% { transform: scaleY(0.5); }
  50% { transform: scaleY(1.4); }
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }

  .eq i {
    animation: eq-bounce 0.9s ease-in-out infinite;
    transform-origin: bottom;
  }

  .eq i:nth-child(2) {
    animation-delay: 0.15s;
  }

  .eq i:nth-child(3) {
    animation-delay: 0.3s;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Адаптив ---------- */

@media (min-width: 640px) {
  .steps {
    grid-template-columns: 1fr 1fr;
    column-gap: 40px;
    row-gap: 26px;
  }

  .mvp-duo {
    grid-template-columns: minmax(0, 1fr) minmax(0, 216px);
    align-items: start;
  }

  .mvp-shot--tall {
    max-width: none;
    margin-inline: 0;
  }
}

@media (min-width: 720px) {
  .nav {
    display: flex;
  }
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(32px, 4.5vw, 64px);
    align-items: center;
  }

  .feature {
    grid-template-columns: repeat(12, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
  }

  .feature-text {
    grid-column: 1 / span 5;
  }

  .feature-visual {
    grid-column: 6 / span 7;
  }

  .feature--rev .feature-visual {
    grid-column: 1 / span 6;
  }

  .feature--rev .feature-text {
    grid-column: 8 / span 5;
  }

  .feature--rev .playlist {
    transform: translateY(14px);
  }

  .feature:not(.feature--rev) .mini-scene {
    transform: translateY(-8px);
  }

  .mvp-chip {
    position: absolute;
    left: -18px;
    bottom: -22px;
    margin: 0;
  }

  .scene-wrap figcaption {
    margin-top: 40px;
  }
}

@media (max-width: 899px) {
  .feature-visual {
    max-width: 560px;
  }

  .scene-wrap {
    max-width: 640px;
  }
}