:root {
  --bg: #0a0a0c;
  --bg-elevated: #111114;
  --bg-card: #16161a;
  --fg: #e8e6e3;
  --fg-muted: #8a8a8e;
  --fg-dim: #5a5a5e;
  --accent: #c8ff00;
  --accent-dim: rgba(200, 255, 0, 0.12);
  --accent-glow: rgba(200, 255, 0, 0.06);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --radius-lg: 20px;
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- NAV ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.5px;
}

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

.nav-tag {
  font-size: 12px;
  color: var(--fg-muted);
  background: var(--accent-dim);
  padding: 4px 12px;
  border-radius: 100px;
  font-weight: 500;
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px 80px;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.hero-text h1 {
  font-family: var(--font-heading);
  font-size: clamp(42px, 5.5vw, 72px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero-text h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-text .lede {
  font-size: 19px;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 480px;
}

.hero-demo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.demo-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.demo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--fg-dim);
}

.demo-dot:first-child { background: #ff5f57; }
.demo-dot:nth-child(2) { background: #febc2e; }
.demo-dot:nth-child(3) { background: #28c840; }

.demo-input {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
}

.demo-input-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--fg-dim);
  margin-bottom: 10px;
  font-weight: 600;
}

.demo-input-text {
  font-size: 14px;
  color: var(--fg-muted);
  font-style: italic;
  line-height: 1.6;
}

.demo-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  color: var(--accent);
  font-size: 20px;
  letter-spacing: 4px;
}

.demo-output {
  padding: 24px 20px;
}

.demo-output-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  margin-bottom: 14px;
  font-weight: 600;
}

.demo-proposal-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}

.demo-proposal-line {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  margin-bottom: 8px;
}

.demo-proposal-line:nth-child(2) { width: 95%; }
.demo-proposal-line:nth-child(3) { width: 80%; }
.demo-proposal-line:nth-child(4) { width: 88%; }
.demo-proposal-line:nth-child(5) { width: 60%; }

.demo-sections {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.demo-section-tag {
  font-size: 11px;
  padding: 4px 10px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 6px;
  font-weight: 500;
}

.demo-time {
  text-align: right;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  font-family: var(--font-heading);
}

/* ---- HOW IT WORKS ---- */
.how {
  padding: 120px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
}

.how h2 {
  font-family: var(--font-heading);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 60px;
  max-width: 600px;
  line-height: 1.1;
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.how-steps::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 15%;
  right: 15%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--border), var(--accent));
}

.step {
  text-align: center;
  position: relative;
}

.step-num {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.step h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}

.step p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.6;
  max-width: 280px;
  margin: 0 auto;
}

/* ---- FEATURES ---- */
.features {
  padding: 120px 40px;
  background: var(--bg-elevated);
}

.features-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.features h2 {
  font-family: var(--font-heading);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -1.5px;
  margin-bottom: 60px;
  max-width: 500px;
  line-height: 1.1;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: border-color 0.3s;
}

.feature-card:hover {
  border-color: rgba(200, 255, 0, 0.2);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 20px;
  display: block;
}

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}

.feature-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ---- NUMBERS ---- */
.numbers {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.number-item .number-value {
  font-family: var(--font-heading);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -2px;
  line-height: 1;
}

.number-item .number-label {
  font-size: 15px;
  color: var(--fg-muted);
  margin-top: 8px;
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 40px;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.closing h2 {
  font-family: var(--font-heading);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -2px;
  margin-bottom: 20px;
  line-height: 1.1;
}

.closing p {
  font-size: 18px;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---- FOOTER ---- */
.footer {
  padding: 40px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 13px;
  color: var(--fg-dim);
}

.footer a {
  color: var(--fg-muted);
  text-decoration: none;
}

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

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .hero { padding: 100px 20px 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .how { padding: 80px 20px; }
  .how-steps { grid-template-columns: 1fr; gap: 40px; }
  .how-steps::before { display: none; }
  .features { padding: 80px 20px; }
  .feature-grid { grid-template-columns: 1fr; }
  .numbers { padding: 60px 20px; }
  .numbers-grid { grid-template-columns: 1fr; gap: 32px; }
  .closing { padding: 80px 20px; }
  .footer { padding: 30px 20px; }
}