:root {
  --bg: #ffffff;
  --bg-2: #f5f5f7;
  --bg-3: #ebebf0;
  --text: #0a0a0a;
  --text-2: #515154;
  --text-3: #8e8e93;
  --accent: #0066ff;
  --border: rgba(0, 0, 0, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --max: 1200px;
  --pad: 40px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --bg-2: #131316;
    --bg-3: #1c1c20;
    --text: #f5f5f7;
    --text-2: #a1a1a6;
    --text-3: #6e6e73;
    --accent: #4d9bff;
    --border: rgba(255, 255, 255, 0.09);
  }
}

* { box-sizing: border-box; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Inter", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -0.011em;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: opacity 0.15s ease, color 0.15s ease;
}

h1, h2, h3 {
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0;
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px var(--pad);
  max-width: var(--max);
  margin: 0 auto;
}

.nav nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav nav a {
  color: var(--text-2);
  font-size: 15px;
  font-weight: 500;
}

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

.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  font-feature-settings: "ss01", "cv11";
}

.logo-dot {
  color: var(--accent);
}

.cta {
  background: var(--text);
  color: var(--bg) !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px !important;
}

.cta:hover { opacity: 0.88; }

/* ---------- Hero ---------- */

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 96px var(--pad) 128px;
  position: relative;
}

.hero-inner { max-width: 860px; }

.eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(44px, 7.5vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin: 0 0 36px;
}

.lede {
  font-size: clamp(18px, 1.6vw, 22px);
  color: var(--text-2);
  line-height: 1.45;
  max-width: 640px;
  margin: 0 0 44px;
}

/* ---------- Waitlist form ---------- */

.waitlist {
  display: flex;
  gap: 10px;
  max-width: 500px;
}

.waitlist input {
  flex: 1;
  padding: 15px 20px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.waitlist input::placeholder { color: var(--text-3); }

.waitlist input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg);
}

.waitlist button {
  padding: 15px 26px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--bg);
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.15s ease, transform 0.05s ease;
  white-space: nowrap;
}

.waitlist button:hover { opacity: 0.88; }
.waitlist button:active { transform: scale(0.98); }
.waitlist button:disabled { opacity: 0.7; cursor: default; }

.waitlist.is-success button {
  background: #1cbf5e;
  color: #ffffff;
  opacity: 1;
}

.waitlist.is-success input {
  border-color: #1cbf5e;
}

.hint {
  color: var(--text-3);
  font-size: 14px;
  margin: 20px 0 0;
}

/* ---------- Sections ---------- */

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 128px var(--pad);
  border-top: 1px solid var(--border);
}

.section h2 {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.02;
  margin: 0 0 24px;
}

.section-lede {
  font-size: clamp(17px, 1.4vw, 20px);
  color: var(--text-2);
  max-width: 640px;
  margin: 0 0 64px;
  line-height: 1.5;
}

/* ---------- How it works ---------- */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}

.steps li {
  padding: 36px 32px;
  background: var(--bg-2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.step-num {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
}

.steps h3 {
  font-size: 24px;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.steps p {
  color: var(--text-2);
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
}

/* ---------- Features ---------- */

.features-section { padding-top: 0; border-top: 0; }

.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature {
  padding: 32px 28px;
  background: var(--bg-2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature h3 {
  font-size: 20px;
  margin: 0 0 8px;
  letter-spacing: -0.015em;
}

.feature p {
  color: var(--text-2);
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
}

/* ---------- Privacy ---------- */

.privacy ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 980px;
}

.privacy li {
  padding: 28px;
  background: var(--bg-2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 16px;
  color: var(--text-2);
  line-height: 1.55;
}

.privacy li strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- Waitlist footer ---------- */

.waitlist-footer {
  max-width: 720px;
  text-align: center;
}

.waitlist-footer h2 { margin-bottom: 16px; }

.waitlist-footer p {
  color: var(--text-2);
  font-size: 18px;
  margin: 0 0 40px;
}

.waitlist-footer .waitlist {
  margin: 0 auto;
}

/* ---------- Footer ---------- */

footer {
  padding: 48px var(--pad);
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.footer-links {
  display: flex;
  gap: 14px;
  align-items: center;
  color: var(--text-3);
  font-size: 14px;
}

footer a { color: var(--text-3); }
footer a:hover { color: var(--text); }
.separator { opacity: 0.6; }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  :root { --pad: 24px; }
  .nav { padding: 14px var(--pad); }
  .hero { padding: 56px var(--pad) 88px; }
  .section { padding: 88px var(--pad); }
  .steps, .features, .privacy ul { grid-template-columns: 1fr; }
  .waitlist { flex-direction: column; }
  .waitlist button { width: 100%; }
  .nav nav { gap: 18px; }
  .nav nav a:not(.cta) { display: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 600px) {
  .features { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 440px) {
  .features { grid-template-columns: 1fr; }
}