:root {
  --bg: #060e1d;
  --bg-2: #0b1323;
  --surface: #18202f;
  --surface-high: #222a3a;
  --text: #dbe2f8;
  --muted: #8b9bb8;
  --accent: #00e5ff;
  --accent-2: #e9b3ff;
  --hot: #ff6e40;
  --border: rgba(255, 255, 255, 0.1);
  --glow: rgba(0, 229, 255, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Plus Jakarta Sans", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

.mesh {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(0, 229, 255, 0.22), transparent 55%),
    radial-gradient(ellipse 60% 40% at 95% 5%, rgba(233, 179, 255, 0.18), transparent 50%),
    radial-gradient(ellipse 50% 60% at 50% 100%, rgba(255, 110, 64, 0.08), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 40%, #0f1728 100%);
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px 120px;
}

.hero {
  position: relative;
  padding: 72px 0 56px;
}

.hero-ghost {
  position: absolute;
  top: 20px;
  left: -12px;
  font-size: clamp(48px, 12vw, 90px);
  font-weight: 900;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.06);
  user-select: none;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--hot);
  background: rgba(255, 110, 64, 0.1);
  border: 1px solid rgba(255, 110, 64, 0.35);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hot);
  box-shadow: 0 0 10px var(--hot);
}

.hero h1 {
  font-size: clamp(26px, 5.5vw, 36px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 20px;
  background: linear-gradient(120deg, #fff 0%, var(--accent) 45%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 32px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.meta-chip {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 10px;
}

.meta-chip strong { color: var(--text); }

.panel {
  position: relative;
  background: rgba(24, 32, 47, 0.65);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: clamp(28px, 5vw, 48px);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 0 0 1px rgba(0, 229, 255, 0.05) inset,
    0 32px 80px rgba(0, 0, 0, 0.45);
}

.panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 29px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,229,255,0.4), transparent 40%, rgba(233,179,255,0.3), transparent 70%, rgba(255,110,64,0.2));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.section {
  margin-bottom: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.section-head {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 20px;
}

.section-num {
  flex-shrink: 0;
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(180deg, var(--accent), transparent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.7;
}

.section h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  padding-top: 6px;
}

.section p,
.section li {
  font-size: 15px;
  color: #b8c4dc;
}

.section p + p { margin-top: 14px; }

.section ul {
  margin: 14px 0 0 20px;
}

.section li { margin-bottom: 8px; }

.callout {
  margin-top: 18px;
  padding: 18px 20px;
  border-radius: 16px;
  background: rgba(0, 229, 255, 0.06);
  border-left: 3px solid var(--accent);
  font-size: 14px;
  color: var(--muted);
}

.callout-warm {
  background: rgba(255, 110, 64, 0.06);
  border-left-color: var(--hot);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.feature-card {
  padding: 16px;
  border-radius: 14px;
  background: var(--surface-high);
  border: 1px solid var(--border);
}

.feature-card strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}

.feature-card span {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.footer-note {
  margin-top: 48px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
}

.footer-note a {
  color: var(--accent);
  text-decoration: none;
}

.lang-links {
  display: inline-block;
  margin-top: 8px;
}

@media (max-width: 600px) {
  .section-head { gap: 12px; }
  .section-num { font-size: 32px; }
  .hero { padding-top: 48px; }
}