:root {
  --accent: #10b981;
  --accent-hover: #059669;
  --accent-light: #d1fae5;
  --google-green: #34A853;
  --google-red: #EA4335;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f4;
  --gray-200: #e8eaed;
  --gray-300: #dadce0;
  --gray-500: #9aa0a6;
  --gray-700: #5f6368;
  --gray-900: #202124;
  --text: #202124;
  --text-secondary: #5f6368;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.1);
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 2px 6px rgba(0,0,0,0.06), 0 10px 30px rgba(0,0,0,0.1);
  --max-width: 880px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Roboto', system-ui, -apple-system, sans-serif;
  font-size: 16px; line-height: 1.7;
  color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, .nav-logo { font-family: 'Google Sans', 'Roboto', sans-serif; }
h1 { font-size: 2.4rem; line-height: 1.25; }
h2 { font-size: 1.55rem; margin-bottom: 16px; }
h2::after { content: ''; display: block; width: 40px; height: 3px; border-radius: 2px; margin-top: 10px; background: var(--accent); }
h3 { font-size: 1.12rem; margin-bottom: 8px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: 'Roboto Mono', 'SF Mono', 'Fira Code', monospace; font-size: 0.88em; background: var(--gray-100); padding: 2px 6px; border-radius: 4px; }
pre { background: #1e1e1e; border-radius: var(--radius); padding: 18px 20px; overflow-x: auto; margin: 16px 0; }
pre code { background: none; padding: 0; font-size: 0.82rem; line-height: 1.65; color: #d4d4d4; }
img { max-width: 100%; height: auto; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav { position: fixed; top: 0; left: 0; right: 0; height: 56px; background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--gray-200); z-index: 100; }
.nav-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; display: flex; align-items: center; height: 100%; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; font-weight: 600; color: var(--text); text-decoration: none; }
.nav-links { display: flex; list-style: none; gap: 20px; align-items: center; }
.nav-links a { color: var(--text-secondary); font-size: 0.90rem; font-weight: 500; text-decoration: none; white-space: nowrap; }
.nav-links li { flex-shrink: 0; }
.nav-links a:hover { color: var(--text); }
.nav-cta { color: var(--accent) !important; font-weight: 600 !important; }
.nav-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 1px; transition: transform 0.2s; }
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(4px,4px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(4px,-4px); }

/* Hero */
.hero { padding: 100px 0 72px; text-align: center; background: linear-gradient(180deg, #ecfdf5 0%, #f5f5f7 50%, #ffffff 100%); }
.hero-badge { display: inline-block; padding: 4px 14px; font-size: 0.82rem; font-weight: 600; color: var(--accent); background: var(--accent-light); border-radius: 20px; margin-bottom: 20px; }
.hero h1 { margin-bottom: 16px; }
.hero-subtitle { font-size: 1.15rem; color: var(--text-secondary); max-width: 650px; margin: 0 auto 28px; line-height: 1.6; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 36px; }
.hero-stats { display: flex; gap: 32px; justify-content: center; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat strong { display: block; font-size: 1.6rem; color: var(--accent); }

/* Buttons */
.btn { display: inline-block; padding: 12px 28px; font-size: 0.95rem; font-weight: 600; border-radius: 28px; text-decoration: none; transition: all 0.15s; }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 2px 12px rgba(16,185,129,.35); }
.btn-primary:hover { background: var(--accent-hover); text-decoration: none; color: #fff; }
.btn-outline { border: 1.5px solid var(--gray-300); color: var(--text); background: #fff; }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-buy { display: inline-block; padding: 14px 40px; font-size: 1.05rem; font-weight: 600; background: var(--accent); color: #fff; border: none; border-radius: 28px; cursor: pointer; box-shadow: 0 2px 12px rgba(16,185,129,.35); font-family: 'Google Sans','Roboto',sans-serif; }
.btn-buy:hover { background: var(--accent-hover); }

/* Sections */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-lead { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 24px; max-width: 600px; }

/* Cards */
.reasons-grid, .usecases-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 20px; margin-top: 28px; }
.reason-card, .usecase-card { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); transition: box-shadow 0.2s; }
.reason-card:hover, .usecase-card:hover { box-shadow: var(--shadow); }
.reason-card h3, .usecase-card h3 { font-size: 1.05rem; }

/* Compare Grid */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.compare-grid > div { background: #fff; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px; }
.compare-grid h3 { font-size: 1.05rem; margin-bottom: 12px; color: var(--accent); }
.compare-grid ul { list-style: none; padding: 0; }
.compare-grid li { padding: 6px 0; border-bottom: 1px solid var(--gray-100); font-size: 0.93rem; }
.compare-grid li:last-child { border-bottom: none; }

/* Tables */
.table-wrap { overflow-x: auto; margin: 20px 0; border-radius: var(--radius); border: 1px solid var(--gray-200); }
table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
thead { background: #202124; color: #fff; }
thead th { padding: 12px 16px; text-align: left; font-weight: 600; }
tbody td { padding: 10px 16px; border-bottom: 1px solid var(--gray-100); }
tbody tr:nth-child(even) { background: var(--gray-50); }

/* FAQ */
.faq-list { margin-top: 20px; }
.faq-item { border: 1px solid var(--gray-200); border-radius: var(--radius-sm); margin-bottom: 10px; }
.faq-item summary { padding: 16px 20px; font-weight: 500; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: '+'; font-size: 1.3rem; color: var(--accent); font-weight: 400; margin-left: 12px; flex-shrink: 0; }
.faq-item[open] summary { border-bottom: 1px solid var(--gray-100); color: var(--accent); }
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 16px 20px; font-size: 0.95rem; color: var(--text-secondary); }

/* Price Block */
.price-block { background: #fff; border: 2px solid var(--accent); border-radius: var(--radius-lg); padding: 36px 24px; max-width: 460px; margin: 0 auto; text-align: center; }
.price { font-size: 2.6rem; font-weight: 700; margin-bottom: 8px; }
.price-note { font-size: 0.92rem; color: var(--text-secondary); margin-bottom: 16px; }

/* Badges */
.badge { display: inline-block; padding: 2px 10px; font-size: 0.8rem; font-weight: 600; border-radius: 12px; }
.badge-green { background: #d1fae5; color: #065f46; }
.badge-yellow { background: #fef3c7; color: #92400e; }
.badge-gray { background: var(--gray-100); color: var(--gray-700); }

/* Note */
.note { background: var(--accent-light); border-left: 3px solid var(--accent); padding: 14px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 20px 0; font-size: 0.93rem; }

/* Anti-grid */
.anti-title { margin-top: 40px; }
.anti-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-top: 20px; }
.anti-item { background: #fff; border: 1px solid #fecaca; border-radius: var(--radius); padding: 20px; }
.anti-item strong { color: var(--google-red); display: block; margin-bottom: 6px; }

/* Footer */
.footer { padding: 40px 0; background: var(--gray-900); color: var(--gray-500); text-align: center; font-size: 0.88rem; }
.footer a { color: var(--gray-300); }
.footer p + p { margin-top: 8px; }

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 1.8rem; }
  .hero { padding: 80px 0 52px; }
  .hero-stats { gap: 20px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .compare-grid { grid-template-columns: 1fr; }
  .reasons-grid, .usecases-grid, .anti-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; position: fixed; top: 56px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); flex-direction: column; padding: 16px 24px; gap: 16px; border-bottom: 1px solid var(--gray-200); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .section { padding: 44px 0; }
  .price { font-size: 2rem; }
}