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

:root {
  --primary: #2563EB; --primary-hover: #1D4ED8; --primary-deep: #1E3A8A;
  --accent-green: #16A34A;
  --navy: #0B1437;
  --bg: #F5F8FF; --card: #FFFFFF; --border: #DBEAFE;
  --text: #1F2937; --text-muted: #6B7280;
  --danger: #DC2626; --warn: #D97706;
  --radius: 16px; --maxw: 1080px;
  --shadow: 0 1px 2px rgba(11,20,55,.04), 0 12px 32px rgba(37,99,235,.07);
  --shadow-sm: 0 1px 2px rgba(11,20,55,.05), 0 4px 12px rgba(37,99,235,.06);
}

html { scroll-behavior: smooth; }
body { font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--text); background: var(--bg); margin: 0; line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column; }
body > main, body > .status-page { flex: 1 0 auto; }
body > .site-footer { flex-shrink: 0; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
a { color: var(--primary); }
h1, h2 { color: var(--navy); line-height: 1.2; letter-spacing: -.02em; }
h3 { color: var(--navy); line-height: 1.25; }
img { max-width: 100%; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  cursor: pointer; border: 2px solid transparent; text-decoration: none;
  font-family: inherit; transition: background .15s, border-color .15s, box-shadow .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 16px rgba(37,99,235,.24); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-outline { background: #fff; color: var(--primary-deep); border-color: var(--border); box-shadow: var(--shadow-sm); }
.btn-outline:hover { border-color: var(--primary); }
.btn-block { width: 100%; }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.btn-sm.btn-primary { box-shadow: 0 4px 12px rgba(37,99,235,.22); }

/* Card */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; }

/* Pill */
.pill { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: 999px; font-size: 11px; font-weight: 700; letter-spacing: .02em; background: #EFF6FF; color: var(--primary); }
.pill-green { background: #ECFDF5; color: var(--accent-green); }

/* Code block */
.code-block { position: relative; background: #0F172A; color: #E2E8F0; border-radius: var(--radius); padding: 18px 20px; overflow-x: auto; }
.code-block pre, .code-block code { font-family: Consolas, Menlo, monospace; font-size: 14px; white-space: pre; }
.code-block .copy-btn {
  position: absolute; top: 10px; right: 10px; background: rgba(255,255,255,.08); color: #E2E8F0;
  border: 1px solid rgba(255,255,255,.16); border-radius: 6px; padding: 5px 10px; font-size: 12px;
  cursor: pointer; font-family: inherit;
}
.code-block .copy-btn:hover { background: rgba(255,255,255,.16); }

/* Section / grid */
.section { padding: 72px 0; }
.section-alt { background: var(--card); }
.section-title { font-size: 38px; text-align: center; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-muted); max-width: 620px; margin: 0 auto 48px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.logo { display: inline-flex; align-items: center; text-decoration: none; }
.logo img { height: 34px; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-link { color: var(--text-muted); text-decoration: none; font-weight: 500; font-size: 14px; }
.nav-link:hover { color: var(--primary); }

/* Hero */
.hero { padding: 92px 0 60px; text-align: center; }
.hero h1 { font-size: 56px; letter-spacing: -1.5px; margin-bottom: 18px; }
.hero h1 b { color: var(--primary); }
.hero .sub { font-size: 18px; color: var(--text-muted); max-width: 620px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; margin-bottom: 36px; flex-wrap: wrap; }
.hero .code-block { max-width: 640px; margin: 0 auto; text-align: left; }

/* Steps */
.step-card { text-align: center; }
.step-icon { width: 44px; height: 44px; border-radius: 10px; background: #EFF6FF; color: var(--primary); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.step-num { display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }

/* Feature cards */
.feature-icon { width: 40px; height: 40px; border-radius: 10px; background: #ECFDF5; color: var(--accent-green); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.feature-card h3 { display: flex; align-items: center; gap: 8px; font-size: 17px; margin-bottom: 8px; color: var(--text); }
.feature-card p { color: var(--text-muted); font-size: 14.5px; }

/* Live demo */
.demo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.demo-form label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 6px; }
.demo-form input, .demo-form textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font: inherit; }
.mock-sheet { border-collapse: collapse; width: 100%; font-size: 13px; }
.mock-sheet th, .mock-sheet td { border: 1px solid var(--border); padding: 8px 10px; text-align: left; }
.mock-sheet th { background: #F0F5FF; color: var(--primary-deep); }
.caption { text-align: center; color: var(--text-muted); font-size: 13px; margin-top: 14px; }

/* Pricing */
.price-toggle { display: flex; justify-content: center; margin-bottom: 40px; }
.price-toggle-inner { display: inline-flex; background: #EFF4FF; padding: 4px; border-radius: 999px; gap: 4px; }
.price-toggle button { border: none; background: transparent; padding: 8px 18px; border-radius: 999px; font: inherit; font-weight: 600; font-size: 13px; color: var(--text-muted); cursor: pointer; }
.price-toggle button.active { background: #fff; color: var(--primary); box-shadow: var(--shadow); }
.price-card { display: flex; flex-direction: column; position: relative; }
.price-card.popular { border-top: 3px solid var(--primary); }
.price-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; padding: 4px 12px; border-radius: 999px; }
.price-name { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.price-amount { font-size: 38px; font-weight: 700; margin-bottom: 4px; }
.price-amount span { font-size: 14px; color: var(--text-muted); font-weight: 500; }
.price-note { font-size: 12px; color: var(--text-muted); margin-bottom: 18px; min-height: 16px; }
.price-list { list-style: none; flex: 1; margin-bottom: 20px; }
.price-list li { display: flex; gap: 8px; padding: 6px 0; color: var(--text); font-size: 14px; }
.price-list li svg { color: var(--accent-green); flex-shrink: 0; margin-top: 2px; }
.price-helper { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 10px; }
.price-shared-note { text-align: center; color: var(--text-muted); font-size: 14px; margin: 32px 0 0; }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--border); padding: 16px 0; }
.faq-item summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--primary); }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { color: var(--text-muted); margin-top: 10px; font-size: 14.5px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 24px; align-items: stretch; }
.contact-details { display: flex; flex-direction: column; }
.contact-details h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--primary); margin-bottom: 22px; }
.contact-details .detail-block { display: flex; gap: 14px; align-items: flex-start; padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--border); }
.contact-details .detail-block:last-child { padding-bottom: 0; margin-bottom: 0; border-bottom: none; }
.detail-icon { width: 40px; height: 40px; flex-shrink: 0; border-radius: 10px; background: #EFF6FF; color: var(--primary); display: flex; align-items: center; justify-content: center; }
.detail-icon svg { width: 19px; height: 19px; }
.detail-text { min-width: 0; }
.detail-label { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); margin-bottom: 4px; }
.contact-details address { font-style: normal; color: var(--text); font-size: 14.5px; line-height: 1.6; }
.contact-details .company { display: block; font-weight: 700; color: var(--navy); }
.contact-details a { color: var(--primary); text-decoration: none; font-weight: 600; word-break: break-word; }
.contact-details a:hover { text-decoration: underline; }
.contact-form { display: grid; gap: 14px; }
.contact-form label { font-size: 13px; font-weight: 600; }
.contact-form input, .contact-form textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; font: inherit; margin-top: 6px; }
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-status { font-size: 14px; min-height: 20px; }
.contact-status.success { color: var(--accent-green); }
.contact-status.error { color: var(--danger); }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--card); padding: 32px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; color: var(--text-muted); font-size: 13px; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--primary); }

/* Docs */
.docs-layout { display: grid; grid-template-columns: 220px 1fr; gap: 48px; padding: 48px 0 96px; align-items: start; }
.docs-nav { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 2px; }
.docs-nav a { color: var(--text-muted); text-decoration: none; padding: 7px 10px; border-radius: 8px; font-size: 14px; }
.docs-nav a:hover { background: #EFF6FF; color: var(--primary); }
.docs-content section { margin-bottom: 52px; scroll-margin-top: 80px; }
.docs-content h2 { font-size: 24px; margin-bottom: 14px; }
.docs-content h3 { font-size: 17px; margin: 20px 0 8px; color: var(--text); }
.docs-content p { margin-bottom: 12px; color: var(--text); }
.docs-content p, .docs-content li { color: var(--text); }
.docs-content ul, .docs-content ol { margin: 0 0 12px 20px; }
.table { width: 100%; border-collapse: collapse; margin: 12px 0 20px; font-size: 14px; }
.table th, .table td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.table th { background: #F0F5FF; color: var(--primary-deep); }

@media (max-width: 900px) {
  .docs-layout { grid-template-columns: 1fr; }
  .docs-nav { position: static; flex-direction: row; flex-wrap: wrap; }
  .demo-grid { grid-template-columns: 1fr; }
}

/* Templates gallery */
.templates-banner { background: #EFF6FF; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; text-align: center; font-size: 14px; margin-bottom: 36px; }
.templates-banner code { background: #fff; padding: 2px 6px; border-radius: 4px; }
.template-card h3 { font-size: 16px; margin-bottom: 12px; }
.template-preview { background: #F5F8FF; border: 1px solid var(--border); border-radius: 8px; padding: 14px; margin-bottom: 14px; max-height: 220px; overflow: auto; }
.template-preview input, .template-preview select, .template-preview textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 8px; font: inherit; font-size: 13px; }
.template-preview label { font-size: 12px; font-weight: 600; display: block; margin-bottom: 4px; }

/* Generator */
.gen-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.gen-panel h2 { font-size: 18px; margin-bottom: 6px; }
.gen-panel p.hint { color: var(--text-muted); font-size: 13px; margin-bottom: 14px; }
.gen-panel textarea, .gen-panel input, .gen-panel select { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font: inherit; margin-bottom: 10px; }
.gen-panel textarea { min-height: 100px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: 8px; margin-bottom: 8px; align-items: center; }
.field-row .remove-field { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 18px; }
.gen-preview-frame { width: 100%; height: 420px; border: 1px solid var(--border); border-radius: 8px; background: #fff; }
@media (max-width: 900px) { .gen-layout { grid-template-columns: 1fr; } }

/* Legal pages */
.legal-hero { padding: 56px 0 32px; border-bottom: 1px solid var(--border); background: var(--card); text-align: left; }
.legal-hero h1 { font-size: 36px; margin-bottom: 8px; }
.legal-meta { color: var(--text-muted); font-size: 13px; }
.legal-body { max-width: 760px; margin: 0 auto; padding: 48px 20px 96px; }
.legal-section { margin-bottom: 40px; }
.legal-section h2 { font-size: 19px; margin-bottom: 10px; }
.legal-section p { color: var(--text); margin-bottom: 12px; font-size: 15px; }
.legal-section ul { margin: 0 0 12px 20px; color: var(--text); font-size: 15px; }
.legal-section li { margin-bottom: 6px; }
.legal-highlight { background: #EFF6FF; border-left: 3px solid var(--primary); padding: 14px 18px; border-radius: 0 8px 8px 0; margin-bottom: 14px; font-size: 14px; }
.legal-divider { border: none; border-top: 1px solid var(--border); margin: 0 0 40px; }

/* Payment status */
.status-page { min-height: 70vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.status-card { max-width: 460px; width: 100%; text-align: center; }
.status-icon { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; color: #fff; }

@media (max-width: 820px) {
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 34px; }
  .section-title { font-size: 28px; }
  .nav-links { gap: 12px; }
  .nav-links .nav-link { display: none; }
  .logo img { height: 28px; }
}