:root {
  --bg: #1c2129;
  --surface: #262d38;
  --surface-2: #323a47;
  --border: #3f4856;
  --text: #f2f4f8;
  --text-dim: #aeb6c4;
  --text-muted: #d4dae3;
  --accent: #5dd4c8;
  --accent-hover: #7aede3;
  --accent-subtle: rgba(93, 212, 200, 0.14);
  --accent-glow: rgba(93, 212, 200, 0.35);
  --low: #3ecf8e;
  --medium: #f5b952;
  --high: #f0616d;
  --radius: 12px;
  --max: 1080px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

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

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(100% - 40px, var(--max));
  margin-inline: auto;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(28, 33, 41, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.9rem;
  color: var(--text-dim);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #0f1419;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--surface-2);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* Hero */
.hero {
  padding: 72px 0 56px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, var(--accent-subtle) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Demo panel */
.demo-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.demo-compose {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  position: relative;
  min-height: 72px;
}

.demo-compose p {
  margin-right: 36px;
}

.demo-btn {
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 0.8rem;
  display: grid;
  place-items: center;
  box-shadow: 0 2px 10px var(--accent-glow);
}

.demo-result {
  display: grid;
  gap: 10px;
}

.demo-block {
  background: var(--surface-2);
  border-radius: 10px;
  padding: 12px 14px;
}

.demo-block h3 {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
  text-transform: uppercase;
}

.badge.high {
  background: rgba(240, 97, 109, 0.15);
  color: var(--high);
}

.demo-flags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.flag {
  font-size: 0.7rem;
  padding: 3px 8px;
  border-radius: 99px;
  background: var(--bg);
  color: var(--text-dim);
}

.demo-rewrite {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
}

.demo-rewrite strong {
  display: block;
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: capitalize;
  margin-bottom: 4px;
}

/* Sections */
section {
  padding: 72px 0;
}

.section-head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 48px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-dim);
  font-size: 1.05rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-subtle);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  margin-bottom: 16px;
}

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

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step {
  text-align: center;
  padding: 24px 16px;
}

.step-num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
  font-weight: 700;
  display: grid;
  place-items: center;
  margin: 0 auto 16px;
  font-size: 1rem;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* Compare */
.compare {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.compare-col h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.compare-col ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.compare-col li {
  font-size: 0.95rem;
  color: var(--text-muted);
  padding-left: 22px;
  position: relative;
}

.compare-col li::before {
  content: "×";
  position: absolute;
  left: 0;
  color: var(--text-dim);
}

.compare-col.protone li::before {
  content: "✓";
  color: var(--accent);
  font-weight: 700;
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}

.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-subtle), 0 12px 40px rgba(0, 0, 0, 0.25);
}

.price-card .plan {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.price-card .amount {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.price-card .amount span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dim);
}

.price-card .desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.price-features {
  list-style: none;
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
  flex: 1;
}

.price-features li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 22px;
  position: relative;
}

.price-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.price-card .btn {
  width: 100%;
}

/* FAQ */
.faq-list {
  max-width: 640px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
}

.faq-item h3 {
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* CTA band */
.cta-band {
  text-align: center;
  padding: 64px 0;
  background: linear-gradient(180deg, transparent, var(--accent-subtle));
  border-top: 1px solid var(--border);
}

.cta-band h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 12px;
}

.cta-band p {
  color: var(--text-dim);
  margin-bottom: 28px;
  max-width: 440px;
  margin-inline: auto;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

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

/* Responsive */
@media (max-width: 860px) {
  .hero-grid,
  .features,
  .steps,
  .compare,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 48px;
  }

  .demo-panel {
    order: -1;
  }
}