:root {
  --bg: oklch(99% 0.003 260);
  --bg-elevated: oklch(96.5% 0.004 260);
  --fg: oklch(12% 0.01 260);
  --fg-secondary: oklch(40% 0.01 260);
  --fg-muted: oklch(58% 0.008 260);
  --border: oklch(90% 0.006 260);
  --brand: oklch(56% 0.28 270);
  --brand-light: oklch(62% 0.24 270);
  --brand-subtle: oklch(95% 0.04 270);
  --brand-glow: oklch(56% 0.28 270 / 0.15);
  --green: oklch(68% 0.19 155);
  --surface: oklch(100% 0 0);
  --glass: oklch(100% 0 0 / 0.7);
  --radius: 12px;
  --font: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

[data-theme="dark"] {
  --bg: oklch(8% 0.015 260);
  --bg-elevated: oklch(12% 0.015 260);
  --fg: oklch(93% 0.005 260);
  --fg-secondary: oklch(68% 0.01 260);
  --fg-muted: oklch(48% 0.008 260);
  --border: oklch(18% 0.015 260);
  --brand: oklch(72% 0.22 270);
  --brand-light: oklch(78% 0.2 270);
  --brand-subtle: oklch(15% 0.05 270);
  --brand-glow: oklch(72% 0.22 270 / 0.12);
  --green: oklch(72% 0.17 155);
  --surface: oklch(11% 0.015 260);
  --glass: oklch(11% 0.015 260 / 0.7);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: var(--brand); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--brand-light); }

/* ─── Reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 80ms; }
.reveal-d2 { transition-delay: 160ms; }
.reveal-d3 { transition-delay: 240ms; }
.reveal-d4 { transition-delay: 320ms; }
.reveal-d5 { transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.01ms !important; }
}

/* ─── Nav ─── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: oklch(from var(--bg) l c h / 0.75);
  border-bottom: 1px solid oklch(from var(--border) l c h / 0.6);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--fg);
  display: flex;
  align-items: center;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: oklch(99% 0 0);
  font-size: 13px;
  font-weight: 900;
  margin-right: 6px;
  box-shadow: 0 2px 8px var(--brand-glow);
}

.nav-links { display: flex; gap: 2px; }

.nav-link {
  color: var(--fg-secondary);
  font-size: 13px;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
  color: var(--fg);
  background: var(--bg-elevated);
}

.nav-actions { display: flex; gap: 6px; align-items: center; }

.nav-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--fg-secondary);
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: none;
}
.nav-btn:hover { background: var(--bg-elevated); color: var(--fg); }
.nav-btn svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ─── Container ─── */
.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ─── Hero ─── */
.hero {
  position: relative;
  padding: calc(54px + 6rem) 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 800px;
  height: 600px;
  top: -120px;
  right: -200px;
  background:
    radial-gradient(ellipse at 70% 30%, oklch(from var(--brand) l c h / 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 30% 70%, oklch(68% 0.19 155 / 0.06) 0%, transparent 50%);
  filter: blur(40px);
  animation: glow-drift 8s ease-in-out infinite alternate;
}

@keyframes glow-drift {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-30px, 20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--fg-secondary);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}

.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
  box-shadow: 0 0 6px oklch(68% 0.19 155 / 0.5);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 4px oklch(68% 0.19 155 / 0.4); }
  50% { box-shadow: 0 0 10px oklch(68% 0.19 155 / 0.7); }
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 20px;
  color: var(--fg);
}

.hero h1 .accent {
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--fg-secondary);
  max-width: 520px;
  line-height: 1.7;
  margin: 0 auto 36px;
}

.hero-cta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  font-family: var(--font);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: oklch(99% 0 0);
  box-shadow: 0 2px 12px var(--brand-glow);
}
.btn-primary:hover {
  filter: brightness(1.08);
  color: oklch(99% 0 0);
  box-shadow: 0 4px 20px oklch(from var(--brand) l c h / 0.25);
  transform: translateY(-1px);
}

.btn-outline {
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-outline:hover { background: var(--bg-elevated); }
.btn-outline svg { width: 15px; height: 15px; flex-shrink: 0; }

/* ─── Adapters ─── */
.adapters-strip {
  padding: 28px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.adapters-grid { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }

.adapter-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
  cursor: default;
  color: var(--fg-secondary);
}

.adapter-pill:hover {
  background: var(--bg-elevated);
  color: var(--fg);
  border-color: oklch(from var(--brand) l c h / 0.2);
  box-shadow: 0 0 12px var(--brand-glow);
}

.adapter-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }

/* ─── Section ─── */
.section { padding: 5rem 0; }

.section-alt {
  background:
    linear-gradient(var(--bg-elevated), var(--bg-elevated)),
    repeating-linear-gradient(0deg, transparent, transparent 59px, var(--border) 59px, var(--border) 60px),
    repeating-linear-gradient(90deg, transparent, transparent 59px, var(--border) 59px, var(--border) 60px);
  background-blend-mode: normal;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 48px;
  text-align: center;
}

.section-header h2 {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--fg), var(--fg-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  color: var(--fg-secondary);
  font-size: 1rem;
  max-width: 460px;
  margin: 0 auto;
}

.section-header-center { text-align: center; }

/* ─── Features ─── */
.features-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.feat {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

.feat::after {
  content: '';
  position: absolute;
  top: var(--glow-y, 50%);
  left: var(--glow-x, 50%);
  width: 200px;
  height: 200px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--brand-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 0;
}

.feat:hover::after { opacity: 1; }
.feat > * { position: relative; z-index: 1; }

.feat:hover {
  border-color: oklch(from var(--brand) l c h / 0.35);
  box-shadow: 0 8px 32px oklch(from var(--brand) l c h / 0.08),
              0 0 0 1px oklch(from var(--brand) l c h / 0.05);
  transform: translateY(-2px);
}

.feat-wide {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

.feat-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--brand-subtle);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.feat-icon svg { width: 18px; height: 18px; stroke-width: 1.75; }

.feat h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.feat p {
  font-size: 13.5px;
  color: var(--fg-secondary);
  line-height: 1.65;
}

.feat-highlight {
  background: linear-gradient(135deg, var(--brand-subtle), oklch(from var(--brand) l c h / 0.04));
  border-color: oklch(from var(--brand) l c h / 0.2);
  position: relative;
  overflow: hidden;
}

.feat-highlight::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--brand-glow) 0%, transparent 60%);
  pointer-events: none;
}

.feat-highlight .feat-icon {
  background: oklch(from var(--brand) l c h / 0.18);
}

/* ─── How it Works ─── */
.steps-layout {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: 0 4px 24px oklch(0% 0 0 / 0.04);
}

.step-card {
  background: var(--surface);
  padding: 32px 28px;
  transition: background 0.3s, transform 0.3s;
  position: relative;
}

.step-card:hover {
  background: var(--bg-elevated);
  transform: translateY(-2px);
}

.step-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--brand);
  transition: width 0.3s;
}

.step-card:hover::after { width: 60%; }

.step-num {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand);
  margin-bottom: 16px;
  letter-spacing: 0.03em;
}

.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 13.5px;
  color: var(--fg-secondary);
  line-height: 1.65;
}

/* ─── Code Block ─── */
.code-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 620px;
  margin: 0 auto;
  box-shadow: 0 4px 24px oklch(0% 0 0 / 0.06);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--fg-muted);
  font-weight: 500;
}

.code-dots { display: flex; gap: 5px; }
.code-dots span { width: 9px; height: 9px; border-radius: 50%; }
.code-dots span:nth-child(1) { background: oklch(65% 0.2 25); }
.code-dots span:nth-child(2) { background: oklch(75% 0.18 85); }
.code-dots span:nth-child(3) { background: oklch(70% 0.18 150); }

.code-body {
  padding: 18px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.8;
  overflow-x: auto;
  white-space: pre;
  color: var(--fg-secondary);
}

.code-body .cmd { color: var(--fg); font-weight: 600; }
.code-body .comment { color: var(--fg-muted); }

/* ─── Tech Stack ─── */
.tech-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.tech-tag {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-secondary);
  transition: all 0.2s;
  cursor: default;
}

.tech-tag:hover {
  background: var(--bg-elevated);
  color: var(--fg);
  border-color: oklch(from var(--brand) l c h / 0.2);
  box-shadow: 0 0 12px var(--brand-glow);
}

.tech-tag span {
  font-weight: 400;
  color: var(--fg-muted);
  margin-left: 4px;
}

/* ─── CTA ─── */
.cta-section {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse at center, var(--brand-glow) 0%, transparent 60%);
  pointer-events: none;
  filter: blur(60px);
}

.cta-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.cta-inner h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}

.cta-inner p {
  color: var(--fg-secondary);
  margin-bottom: 24px;
  font-size: 1rem;
}

/* ─── Footer ─── */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--fg-muted);
}

.footer-inner .footer-logo {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--fg);
  display: flex;
  align-items: center;
}

.footer-inner .footer-logo .logo-mark {
  width: 20px; height: 20px; font-size: 11px; margin-right: 4px;
}

.footer-links {
  display: flex;
  gap: 12px;
}

.footer-links a {
  color: var(--fg-muted);
  font-size: 12px;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--fg); }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .nav-links { display: none; }
}

@media (max-width: 768px) {
  .features-layout { grid-template-columns: 1fr; }
  .feat-wide { grid-column: span 1; grid-template-columns: 1fr; }
  .steps-layout { grid-template-columns: 1fr; }
  .hero { padding-top: calc(54px + 4rem); }
  .hero h1 { font-size: 2.2rem; }
  .section { padding: 3.5rem 0; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.8rem; }
}