* {
  box-sizing: border-box;
}

:root {
  --bg: #0a0d12;
  --text: #f6f8fb;
  --muted: #a7b0bb;
  --soft: #77808a;
  --line: rgba(255, 255, 255, 0.10);

  --blue: #62a7ff;

  --radius: 22px;
  --max-width: 1220px;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top, rgba(28, 54, 88, 0.30), transparent 36%),
    linear-gradient(180deg, #0d1118 0%, #0a0d12 45%, #090b0f 100%);
}

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

a {
  color: inherit;
}

.page {
  width: min(calc(100% - 40px), var(--max-width));
  margin: 0 auto;
  padding-bottom: 36px;
}

/* Header */

.topbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
  transition: opacity 0.28s ease, transform 0.28s ease;
}

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

.topbar-inner {
  width: min(calc(100% - 24px), 1200px);
  margin: 12px auto 0;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 18px;
  background: rgba(11, 16, 24, 0.82);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.topbar-brand img {
  width: 34px;
  height: 34px;
}

.topbar-brand span {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.topbar-youtube {
  padding: 11px 16px;
  border-radius: 12px;
  background: linear-gradient(135deg, #ff5e57, #ff3131);
  color: white;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  box-shadow: 0 10px 26px rgba(255, 67, 67, 0.26);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.topbar-youtube:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(255, 67, 67, 0.32);
}

/* Hero */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  gap: 56px;
  padding: 72px 0 108px;
}

.hero-logo {
  width: clamp(140px, 18vw, 250px);
  flex-shrink: 0;
  filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.35));
}

.hero-copy {
  max-width: 780px;
}

.brand {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 0.80rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3.25rem, 8vw, 7rem);
  line-height: 0.93;
  letter-spacing: -0.055em;
}

.intro {
  max-width: 700px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 1.16rem;
  line-height: 1.75;
}


/* Scroll cue */

.scroll-indicator {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  transition: color 0.18s ease, transform 0.18s ease;
}

.scroll-indicator:hover {
  color: #ffffff;
  transform: translateX(-50%) translateY(3px);
}

.scroll-circle {
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.045);
  backdrop-filter: blur(8px);
  font-size: 1.25rem;
  box-shadow:
    0 8px 26px rgba(0, 0, 0, 0.22),
    inset 0 0 0 1px rgba(255, 255, 255, 0.02);
  animation: scrollPulse 2.2s ease-in-out infinite;
}

.scroll-label {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--soft);
}

@keyframes scrollPulse {
  0%, 100% {
    transform: translateY(0);
    border-color: rgba(255, 255, 255, 0.22);
  }

  50% {
    transform: translateY(6px);
    border-color: rgba(98, 167, 255, 0.55);
  }
}

/* Tiles */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.tile {
  position: relative;
  overflow: hidden;
  height: 330px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.10);
  text-decoration: none;
  background: linear-gradient(180deg, #111827, #0f1520);
  isolation: isolate;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.16);
  transition: transform 0.26s ease, border-color 0.26s ease, box-shadow 0.26s ease;
}

.tile:hover {
  transform: translateY(-8px) scale(1.018);
  border-color: rgba(255, 255, 255, 0.16);
  box-shadow:
    0 22px 54px rgba(0, 0, 0, 0.28),
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 0 36px var(--accent);
}

.tile-disabled {
  cursor: default;
}

.tile-disabled:hover {
  transform: translateY(-4px) scale(1.01);
}

.tile-bg,
.tile-overlay,
.tile-content {
  position: absolute;
  inset: 0;
}

.tile-bg {
  background-image: var(--image);
  background-size: cover;
  background-position: center;
  filter: blur(1.5px) saturate(1.06);
  transform: scale(1.08);
  transition: transform 0.34s ease, filter 0.34s ease;
}

.tile:hover .tile-bg {
  transform: scale(1.15);
  filter: blur(1.4px) saturate(1.12);
}

.tile-bg-youtube {
  background:
    radial-gradient(circle at top right, rgba(255, 75, 75, 0.30), transparent 34%),
    radial-gradient(circle at bottom left, rgba(98, 167, 255, 0.20), transparent 40%),
    linear-gradient(145deg, #141926 0%, #0f1520 100%);
}

.tile-overlay {
  background:
    linear-gradient(180deg, rgba(8, 11, 16, 0.18) 0%, rgba(8, 11, 16, 0.52) 54%, rgba(8, 11, 16, 0.88) 100%),
    linear-gradient(120deg, rgba(0, 0, 0, 0.12), transparent 40%);
}

.tile::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.85;
}

.tile-content {
  z-index: 2;
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.tile-top,
.tile-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.tile-top {
  margin-bottom: 18px;
}

.tile-main {
  margin-top: auto;
  margin-bottom: auto;
}

.tile-number,
.tile-tag,
.section-label {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.tile-number {
  color: rgba(255, 255, 255, 0.72);
}

.tile-tag {
  padding: 8px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.10);
  color: white;
  backdrop-filter: blur(8px);
}

.tile-tag-soon {
  color: #ffe0b7;
  background: rgba(255, 138, 76, 0.14);
}

.tile h2 {
  margin: 0 0 12px;
  font-size: 2rem;
  line-height: 1.02;
  letter-spacing: -0.04em;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.36);
}

.tile p {
  max-width: 480px;
  margin: 0;
  color: rgba(245, 247, 250, 0.86);
  line-height: 1.62;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.33);
}

.tile-link {
  color: white;
  font-size: 0.95rem;
  font-weight: 700;
}

.tile-link-muted {
  color: rgba(255, 255, 255, 0.72);
}

/* About */

.about {
  margin-top: 92px;
  padding: 68px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 42px;
}

.section-label {
  margin: 8px 0 0;
  color: var(--soft);
}

.about-copy {
  max-width: 760px;
}

.about-copy h2 {
  margin: 0 0 20px;
  font-size: clamp(2rem, 5vw, 3.7rem);
  letter-spacing: -0.045em;
}

.about-copy p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.78;
}

/* Footer */

.footer {
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--soft);
  font-size: 0.82rem;
}

/* Responsive */

@media (max-width: 980px) {
  .hero {
    min-height: 100svh;
    padding: 100px 0 104px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 28px;
  }

  .hero-logo {
    width: 135px;
  }
}

@media (max-width: 760px) {
  .page {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .topbar-inner {
    width: min(calc(100% - 18px), 1200px);
    margin-top: 9px;
    padding: 10px 12px;
  }

  .topbar-brand span {
    font-size: 0.95rem;
  }

  .topbar-youtube {
    padding: 10px 12px;
    font-size: 0.84rem;
  }

  .tiles {
    grid-template-columns: 1fr;
  }

  .tile {
    height: 300px;
  }

  .tile h2 {
    font-size: 1.8rem;
  }

  .about {
    margin-top: 70px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer {
    padding: 30px 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }
}


@media (prefers-reduced-motion: reduce) {
  .scroll-circle {
    animation: none;
  }
}