* {
  box-sizing: border-box;
}

:root {
  --bg: #0b0b0d;
  --panel: #151519;
  --panel-2: #1d1d23;
  --text: #f4f4f5;
  --muted: #a6a6af;
  --accent: #b7ff3c;
  --accent-2: #d6ff8d;
  --border: #2b2b32;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 0%, rgba(183, 255, 60, 0.10), transparent 30%),
    radial-gradient(circle at 90% 20%, rgba(183, 255, 60, 0.07), transparent 25%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.hero {
  padding: 80px 24px 70px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.025), transparent);
}

.hero-inner {
  max-width: 1180px;
  margin: auto;
}

.badge,
.eyebrow,
.part-label {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: .14em;
  font-size: .75rem;
}

.hero h1 {
  margin: 10px 0 8px;
  font-size: clamp(3.5rem, 10vw, 7rem);
  line-height: .9;
  letter-spacing: -0.06em;
}

.hero p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 50px 0 70px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.section-heading h2 {
  margin: 5px 0 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.04em;
}

.add-btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0a0a0a;
  font-weight: 850;
  padding: 12px 17px;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .15s ease, filter .15s ease;
}

.add-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.video-card {
  background: linear-gradient(145deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  overflow: hidden;
  box-shadow: 0 15px 45px rgba(0,0,0,.22);
}

.video-card h3 {
  margin: 8px 0 14px;
  font-size: 1.3rem;
}

.video-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background: #050505;
  aspect-ratio: 16 / 9;
}

.video-wrap video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.missing-video {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: max-content;
  max-width: 80%;
  padding: 9px 12px;
  border-radius: 9px;
  background: rgba(0,0,0,.72);
  color: #ddd;
  font-size: .82rem;
  pointer-events: none;
}

.tip {
  margin: 26px 0 0;
  color: var(--muted);
  font-size: .9rem;
}

code {
  color: var(--accent-2);
  background: #19191d;
  padding: 2px 6px;
  border-radius: 5px;
}

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 28px 20px;
  font-size: .85rem;
}

@media (max-width: 760px) {
  .hero {
    padding: 58px 20px;
  }

  .container {
    width: min(100% - 28px, 1180px);
    padding-top: 34px;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }

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