:root {
  --bg: #0a0a0c;
  --bg-soft: #111114;
  --text: #fafafa;
  --text-2: rgba(250, 250, 250, 0.65);
  --text-3: rgba(250, 250, 250, 0.4);
  --border: rgba(255, 255, 255, 0.08);
  --accent: #00C8FF;
  --accent-2: #7B61FF;
  --up: #0F6E56;
  --down: #A32D2D;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', sans-serif;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 12, 0.7);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
}

.nav-links a:not(.nav-cta):hover {
  color: var(--text);
}

.nav-cta {
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--text);
  color: #0a0a0c;
  font-weight: 600;
}

.nav-cta:hover {
  background: rgba(250, 250, 250, 0.85);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 120px 32px 60px;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  overflow: hidden;
}

.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-3);
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 100px;
  margin-bottom: 36px;
}

.hero-title {
  font-size: clamp(56px, 9vw, 120px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 32px;
}

.grad {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 70%, #ff6f9c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  font-size: clamp(17px, 1.4vw, 20px);
  color: var(--text-2);
  margin-bottom: 48px;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  justify-content: center;
  margin-bottom: 100px;
}

.btn-primary {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 18px 36px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #0a0a0c;
  border-radius: 12px;
  font-weight: 700;
  font-size: 16px;
  transition: transform 120ms, box-shadow 120ms;
  box-shadow: 0 8px 30px rgba(0, 200, 255, 0.25);
  letter-spacing: -0.01em;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 200, 255, 0.35);
}

.btn-primary.big {
  padding: 22px 44px;
  font-size: 18px;
}

.btn-sub {
  font-size: 12px;
  font-weight: 500;
  opacity: 0.7;
  margin-top: 4px;
}

/* ---------- Showcase ---------- */
.showcase {
  position: relative;
  margin: 0 auto;
  max-width: 900px;
  height: 480px;
}

.showcase-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(0, 200, 255, 0.15) 0%, transparent 60%),
              radial-gradient(ellipse at 60% 40%, rgba(123, 97, 255, 0.12) 0%, transparent 50%);
  filter: blur(40px);
}

.showcase-panel {
  position: absolute;
  right: 0;
  top: 40px;
  width: 320px;
  background: rgba(20, 22, 28, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 14px;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px);
}

.sp-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 6px 12px;
  border-bottom: 1px solid var(--border);
}

.sp-title {
  font-size: 13px;
  font-weight: 600;
}

.sp-actions {
  display: flex;
  gap: 10px;
  color: var(--text-3);
  font-size: 14px;
}

.sp-cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 10px;
}

.sp-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 11px 13px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.sp-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sp-name {
  font-size: 13px;
  font-weight: 600;
}

.sp-price {
  font-size: 13px;
  color: var(--text-2);
  font-variant-numeric: tabular-nums;
}

.sp-change {
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.sp-change.up { color: #2eb872; }
.sp-change.down { color: #e0584a; }

.sp-divider {
  height: 1px;
  background: var(--border);
  margin: 2px 4px;
}

@media (max-width: 720px) {
  .showcase { height: auto; padding: 20px 0; }
  .showcase-panel { position: relative; right: auto; top: auto; width: 100%; max-width: 320px; margin: 0 auto; }
}

/* ---------- Sections ---------- */
.section-title {
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-align: center;
  margin-bottom: 72px;
}

/* ---------- Features ---------- */
.features {
  padding: 140px 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
}

.feat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.feat-card {
  background: var(--bg-soft);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 200ms;
}

.feat-card:hover {
  background: rgba(255, 255, 255, 0.02);
}

.feat-num {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.feat-card h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.feat-card p {
  font-size: 15px;
  color: var(--text-2);
  font-weight: 400;
}

/* ---------- Download ---------- */
.download {
  padding: 140px 0;
  text-align: center;
}

.download-sub {
  color: var(--text-2);
  font-size: 16px;
  margin: -36px 0 36px;
}

.caveat {
  margin-top: 32px;
  font-size: 13px;
  color: var(--text-3);
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ---------- Footer ---------- */
footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-3);
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-2);
}

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