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

:root {
  --accent:        #185FA5;
  --accent-dark:   #0f4a82;
  --accent-light:  #e6f1fb;
  --success:       #0f6e56;
  --success-light: #e6f5f1;
  --warning:       #92400e;
  --bg:            #f0efe8;
  --card:          #ffffff;
  --bg-2:          #f7f6f3;
  --text:          #1a1a18;
  --text-2:        #5f5e5a;
  --text-3:        #888780;
  --border:        rgba(0,0,0,0.09);
  --border-strong: rgba(0,0,0,0.18);
  --radius:        8px;
  --radius-lg:     14px;
  --radius-xl:     22px;
  --max-w:         1200px;
  --nav-h:         64px;
}

/* ── Base ─────────────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* ── Nav ──────────────────────────────────────────────────────────── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 0.5px solid var(--border);
  height: var(--nav-h);
  display: flex; align-items: center;
  padding: 0 2rem;
}
.nav-inner {
  max-width: var(--max-w); width: 100%; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}
.nav-logo { font-size: 21px; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; display: flex; align-items: center; gap: 0; }
.nav-logo svg, .nav-logo .logo-mark { margin-right: 10px; flex-shrink: 0; }
.nav-logo span { color: var(--text); }
.logo-mark {
  width: 40px; height: 40px; flex-shrink: 0;
  background: var(--accent); border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 900; color: #fff;
  letter-spacing: -0.04em; line-height: 1;
  font-style: italic;
}
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a { font-size: 14px; color: var(--text-2); font-weight: 500; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.active { color: var(--accent); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .btn-ghost {
  font-size: 14px; font-weight: 500; color: var(--text-2);
  padding: 7px 14px; border-radius: var(--radius); border: none; background: none; cursor: pointer;
}
.nav-actions .btn-ghost:hover { background: var(--bg); color: var(--text); text-decoration: none; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff;
  font-size: 14px; font-weight: 600;
  padding: 9px 20px; border-radius: var(--radius);
  border: none; cursor: pointer; transition: background 0.15s;
  text-decoration: none;
}
.btn-primary:hover { background: var(--accent-dark); text-decoration: none; color: #fff; }
.btn-outline {
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--accent);
  font-size: 14px; font-weight: 600;
  padding: 9px 20px; border-radius: var(--radius);
  border: 1.5px solid var(--accent); cursor: pointer; transition: all 0.15s;
  text-decoration: none;
}
.btn-outline:hover { background: var(--accent-light); text-decoration: none; }
.btn-lg { font-size: 16px; padding: 13px 28px; border-radius: var(--radius-lg); }
.btn-xl { font-size: 17px; padding: 15px 36px; border-radius: var(--radius-lg); }

/* Hamburger */
.nav-burger { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-burger span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; transition: all 0.2s; }
.nav-mobile { display: none; }

/* ── Sections ─────────────────────────────────────────────────────── */
section { padding: 80px 2rem; }
.inner { max-width: var(--max-w); margin: 0 auto; }

.section-label {
  font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 12px;
}
h1 { font-size: clamp(32px, 5vw, 54px); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; }
h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; line-height: 1.15; letter-spacing: -0.025em; }
h3 { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; }
.lead { font-size: clamp(16px, 2vw, 19px); color: var(--text-2); line-height: 1.65; max-width: 620px; }
.centered { text-align: center; }
.centered .lead { margin: 0 auto; }

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
  background: var(--card);
  padding: 96px 2rem 80px;
  border-bottom: 0.5px solid var(--border);
}
.hero-inner { max-width: var(--max-w); margin: 0 auto; }
.hero h1 { max-width: 780px; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { margin-bottom: 36px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 14px; font-size: 13px; color: var(--text-3); }
.hero-split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-split .hero-text h1 { max-width: none; }
.hero-split .hero-text .lead { max-width: none; }
.hero-mockup {
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 24px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.10);
}

/* ── Cards ────────────────────────────────────────────────────────── */
.cards { display: grid; gap: 20px; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.cards-2 { grid-template-columns: repeat(2, 1fr); }
.cards-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.card-icon {
  width: 44px; height: 44px;
  background: var(--accent-light);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
}
.card h3 { margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--text-2); line-height: 1.6; }

/* ── Feature rows (alternating) ───────────────────────────────────── */
.feature-row {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center; padding: 72px 2rem;
}
.feature-row.flip .feature-text { order: 2; }
.feature-row.flip .feature-visual { order: 1; }
.feature-text h2 { margin-bottom: 16px; }
.feature-text p { color: var(--text-2); margin-bottom: 20px; }
.feature-bullets { list-style: none; }
.feature-bullets li {
  padding: 6px 0 6px 24px; position: relative;
  font-size: 14px; color: var(--text-2);
}
.feature-bullets li::before {
  content: '✓'; position: absolute; left: 0;
  color: var(--success); font-weight: 700;
}
.feature-visual {
  background: var(--bg-2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  min-height: 280px;
  display: flex; flex-direction: column; justify-content: center;
}

/* ── Code / Formula block ─────────────────────────────────────────── */
.formula-block {
  background: #1a1a18; border-radius: var(--radius-lg);
  padding: 24px 28px; font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px; line-height: 2; color: #e2e0d8;
}
.formula-block .kw  { color: #7dcfb6; }
.formula-block .op  { color: #888780; }
.formula-block .val { color: #fbbf24; }
.formula-block .cmt { color: #5f5e5a; }

/* ── Stat strip ───────────────────────────────────────────────────── */
.stat-strip { background: var(--accent); color: #fff; padding: 48px 2rem; }
.stat-strip .inner { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
.stat-strip .stat-num { font-size: 36px; font-weight: 800; letter-spacing: -0.03em; }
.stat-strip .stat-label { font-size: 13px; opacity: 0.75; margin-top: 4px; }

/* ── Pricing cards ────────────────────────────────────────────────── */
.plan-card {
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex; flex-direction: column;
}
.plan-card.featured { border: 2px solid var(--accent); }
.plan-name { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.plan-price { font-size: 36px; font-weight: 800; letter-spacing: -0.03em; margin: 10px 0; line-height: 1; }
.plan-price sup { font-size: 20px; font-weight: 700; vertical-align: top; margin-top: 6px; }
.plan-price sub { font-size: 14px; font-weight: 400; color: var(--text-2); }
.plan-desc { font-size: 13px; color: var(--text-2); margin-bottom: 20px; min-height: 36px; }
.plan-features { list-style: none; margin-bottom: 24px; flex: 1; }
.plan-features li {
  font-size: 13px; padding: 5px 0 5px 22px;
  position: relative; color: var(--text-2);
}
.plan-features li::before { content: '✓'; position: absolute; left: 0; color: var(--success); font-weight: 700; }
.plan-features li.no::before { content: '—'; color: var(--text-3); }
.plan-badge {
  display: inline-block; font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--accent); background: var(--accent-light);
  padding: 2px 8px; border-radius: 20px; margin-left: 8px;
}
.plan-card .btn-primary, .plan-card .btn-outline { width: 100%; margin-top: auto; }

/* ── Comparison table ─────────────────────────────────────────────── */
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare-table th { font-weight: 700; padding: 14px 18px; text-align: left; border-bottom: 2px solid var(--border-strong); }
.compare-table th:not(:first-child) { text-align: center; }
.compare-table td { padding: 12px 18px; border-bottom: 0.5px solid var(--border); }
.compare-table td:not(:first-child) { text-align: center; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table .section-row td {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--text-3);
  background: var(--bg-2); padding: 10px 18px;
}
.compare-table .check { color: var(--success); font-weight: 700; }
.compare-table .no    { color: var(--text-3); }
.compare-table .highlight th { color: var(--accent); }

/* ── FAQ ──────────────────────────────────────────────────────────── */
.faq { max-width: 700px; margin: 0 auto; }
.faq-item { border-bottom: 0.5px solid var(--border); }
.faq-q {
  width: 100%; background: none; border: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; font-size: 15px; font-weight: 600; color: var(--text);
  text-align: left; gap: 16px;
}
.faq-q .icon { font-size: 20px; color: var(--text-3); flex-shrink: 0; transition: transform 0.2s; }
.faq-q[aria-expanded="true"] .icon { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 0 20px; font-size: 14px; color: var(--text-2); line-height: 1.7; }
.faq-q[aria-expanded="true"] + .faq-a { display: block; }

/* ── CTA band ─────────────────────────────────────────────────────── */
.cta-band {
  background: var(--text);
  color: #fff;
  text-align: center;
  padding: 88px 2rem;
}
.cta-band h2 { color: #fff; margin-bottom: 16px; }
.cta-band p { color: rgba(255,255,255,0.6); margin-bottom: 32px; font-size: 17px; max-width: 480px; margin-left: auto; margin-right: auto; }
.cta-band .btn-primary { background: var(--accent); font-size: 16px; padding: 14px 32px; }
.cta-band .btn-primary:hover { background: var(--accent-dark); }
.cta-note { margin-top: 14px; font-size: 13px; color: rgba(255,255,255,0.4); }

/* ── Problem section ──────────────────────────────────────────────── */
.problem { background: var(--card); }
.problem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.problem-items { list-style: none; margin-top: 16px; }
.problem-items li {
  padding: 14px 0 14px 36px; position: relative;
  border-bottom: 0.5px solid var(--border);
  font-size: 14px; color: var(--text-2); line-height: 1.55;
}
.problem-items li:last-child { border-bottom: none; }
.problem-items li::before {
  content: '✕'; position: absolute; left: 0; top: 14px;
  color: #dc2626; font-weight: 700; font-size: 13px;
}
.solution-tag {
  display: inline-block;
  background: var(--success-light); color: var(--success);
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 4px 12px; border-radius: 20px;
  margin-bottom: 16px;
}

/* ── Trust strip ──────────────────────────────────────────────────── */
.trust-strip { background: var(--bg-2); padding: 48px 2rem; border-top: 0.5px solid var(--border); border-bottom: 0.5px solid var(--border); }
.trust-items { display: flex; gap: 40px; flex-wrap: wrap; justify-content: center; }
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-2); }
.trust-item .ti-icon { font-size: 20px; }

/* ── Steps ────────────────────────────────────────────────────────── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
.step { text-align: center; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 800; margin: 0 auto 16px;
}
.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-2); }

/* ── Footer ───────────────────────────────────────────────────────── */
footer {
  background: var(--card);
  border-top: 0.5px solid var(--border);
  padding: 48px 2rem 32px;
}
.footer-inner { max-width: var(--max-w); margin: 0 auto; }
.footer-top { display: flex; justify-content: space-between; gap: 40px; margin-bottom: 40px; flex-wrap: wrap; }
.footer-brand { max-width: 280px; }
.footer-logo { font-size: 18px; font-weight: 800; color: var(--accent); margin-bottom: 10px; }
.footer-tagline { font-size: 13px; color: var(--text-2); line-height: 1.6; }
.footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 14px; }
.footer-col a { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 8px; }
.footer-col a:hover { color: var(--text); text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 24px; border-top: 0.5px solid var(--border); font-size: 12px; color: var(--text-3); }

/* ── About ────────────────────────────────────────────────────────── */
.about-prose { max-width: 720px; }
.about-prose p { font-size: 16px; color: var(--text-2); line-height: 1.75; margin-bottom: 20px; }
.about-prose h3 { margin-bottom: 12px; margin-top: 36px; }
.persona-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 36px; }
.persona-card { background: var(--card); border: 0.5px solid var(--border); border-radius: var(--radius-lg); padding: 20px; }
.persona-card .p-icon { font-size: 28px; margin-bottom: 10px; }
.persona-card h4 { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.persona-card p { font-size: 13px; color: var(--text-2); }

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  section { padding: 56px 1.25rem; }
  .hero { padding: 64px 1.25rem 56px; }
  .hero-split { grid-template-columns: 1fr; gap: 32px; }
  .hero-mockup { display: none; }
  .nav-links { display: none; }
  .nav-burger { display: block; }
  .nav-mobile {
    display: none; position: fixed; inset: var(--nav-h) 0 0 0;
    background: var(--card); z-index: 99; padding: 24px 1.5rem;
    flex-direction: column; gap: 8px; border-top: 0.5px solid var(--border);
  }
  .nav-mobile.open { display: flex; }
  .nav-mobile a { font-size: 18px; font-weight: 600; color: var(--text); padding: 12px 0; border-bottom: 0.5px solid var(--border); }
  .nav-mobile .btn-primary { margin-top: 12px; text-align: center; }
  .cards-3, .cards-4 { grid-template-columns: 1fr; }
  .cards-2 { grid-template-columns: 1fr; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; padding: 56px 1.25rem; }
  .feature-row.flip .feature-text, .feature-row.flip .feature-visual { order: unset; }
  .stat-strip .inner { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .persona-cards { grid-template-columns: 1fr; }
  .trust-items { flex-direction: column; align-items: flex-start; gap: 20px; }
  .footer-top { flex-direction: column; }
  .compare-table { font-size: 12px; }
  .compare-table th, .compare-table td { padding: 10px 10px; }
}