:root {
  --bg: #000000;
  --surface: #111113;
  --surface-border: #1d1d20;
  --text-main: #f5f5f7;
  --text-sub: #86868b;
  --text-muted: #6e6e73;
  --accent: #2997ff; /* Apple Signature Blue */
  --accent-hover: #147ce5;
  --white-btn: #f5f5f7;
  --white-btn-hover: #ffffff;
  --radius-card: 20px;
  --radius-btn: 980px;
  --max-w: 980px;
}

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

html {
  background: var(--bg);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.012em;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text-main);
  font-size: 17px;
  line-height: 1.5;
  min-height: 100vh;
}

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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* Nav */
header {
  height: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}
.logo {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.nav-links {
  display: flex;
  gap: 24px;
}
.nav-links a {
  color: var(--text-sub);
  font-size: 13px;
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--text-main); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: all 0.18s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--white-btn);
  color: #000;
}
.btn-primary:hover {
  background: var(--white-btn-hover);
  transform: scale(1.01);
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Hero */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}
.hero-tag {
  color: var(--text-sub);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 20px;
}
.hero h1 span {
  color: var(--text-sub);
}
.hero-desc {
  color: var(--text-sub);
  font-size: 20px;
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.45;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-bottom: 24px;
}
.hero-note {
  font-size: 13px;
  color: var(--text-muted);
}

/* Sections */
section {
  padding: 72px 0;
}
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}
.section-title p {
  color: var(--text-sub);
  font-size: 17px;
}

/* Grids */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
}
.card h3 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
}
.card p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.5;
}

/* Pricing Cards */
.pricing-card {
  display: flex;
  flex-direction: column;
}
.pricing-card.highlight {
  border-color: rgba(255, 255, 255, 0.22);
}
.plan-header {
  margin-bottom: 24px;
}
.plan-name {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 4px;
}
.plan-price {
  font-size: 46px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 16px 0 6px;
}
.plan-price small {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-sub);
  letter-spacing: 0;
}
.plan-rate {
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
}
.plan-features {
  list-style: none;
  border-top: 1px solid var(--surface-border);
  padding-top: 20px;
  margin-bottom: 32px;
  flex-grow: 1;
}
.plan-features li {
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.plan-features li::before {
  content: "—";
  color: var(--text-muted);
}
.pricing-card .btn {
  width: 100%;
}

/* FAQ */
.faq-wrap {
  max-width: 680px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--surface-border);
  padding: 20px 0;
}
.faq-item summary {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p {
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.55;
  margin-top: 12px;
}

/* CTA */
.cta-box {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-card);
  padding: 64px 32px;
  text-align: center;
  margin: 32px 0 80px;
}
.cta-box h2 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.cta-box p {
  color: var(--text-sub);
  font-size: 17px;
  margin-bottom: 28px;
}

/* Footer */
footer {
  border-top: 1px solid var(--surface-border);
  padding: 32px 0;
  color: var(--text-muted);
  font-size: 13px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.footer-links a:hover { color: var(--text-main); }

@media (max-width: 600px) {
  .hero { padding: 60px 0 40px; }
  .hero-actions { flex-direction: column; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}