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

:root {
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #EFF6FF;
  --text: #111827;
  --muted: #6B7280;
  --border: #E5E7EB;
  --bg: #F9FAFB;
}

body { font-family: 'Inter', sans-serif; color: var(--text); background: #fff; line-height: 1.6; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* ── Buttons ── */
.btn { display: inline-block; padding: 12px 24px; border-radius: 8px; font-weight: 600; font-size: 15px; text-decoration: none; cursor: pointer; transition: background 0.15s, opacity 0.15s; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-outline { background: #fff; color: var(--blue); border: 2px solid var(--blue); }
.btn-outline:hover { background: var(--blue-light); }
.btn-ghost { color: var(--text); border: 1px solid var(--border); background: #fff; }
.btn-ghost:hover { background: var(--bg); }
.btn-lg { padding: 16px 32px; font-size: 17px; border-radius: 10px; }

/* ── Nav ── */
.nav { position: sticky; top: 0; background: #fff; border-bottom: 1px solid var(--border); z-index: 100; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-size: 22px; font-weight: 800; color: var(--blue); text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--text); text-decoration: none; font-weight: 500; font-size: 15px; }
.nav-links a:hover { color: var(--blue); }

/* ── Hero ── */
.hero { padding: 96px 0 80px; text-align: center; background: linear-gradient(180deg, #EFF6FF 0%, #fff 100%); }
.badge { display: inline-block; background: #DBEAFE; color: var(--blue-dark); font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 20px; margin-bottom: 24px; }
.hero h1 { font-size: clamp(32px, 5vw, 56px); font-weight: 800; line-height: 1.15; max-width: 760px; margin: 0 auto 20px; }
.hero-sub { font-size: 18px; color: var(--muted); max-width: 600px; margin: 0 auto 36px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.hero-note { color: var(--muted); font-size: 13px; }

/* ── Problem ── */
.problem { padding: 80px 0; background: #fff; }
.problem h2 { text-align: center; font-size: 32px; font-weight: 800; margin-bottom: 40px; }
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.problem-card { background: var(--bg); border-radius: 12px; padding: 24px; border: 1px solid var(--border); }
.problem-icon { font-size: 28px; display: block; margin-bottom: 12px; }
.problem-card p { color: var(--muted); font-size: 15px; line-height: 1.6; font-style: italic; }

/* ── How it works ── */
.how { padding: 80px 0; background: var(--bg); }
.how h2 { text-align: center; font-size: 32px; font-weight: 800; margin-bottom: 48px; }
.steps { display: flex; align-items: flex-start; gap: 8px; flex-wrap: wrap; justify-content: center; }
.step { background: #fff; border-radius: 12px; padding: 24px; border: 1px solid var(--border); max-width: 220px; flex: 1 1 200px; }
.step-num { width: 36px; height: 36px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 800; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14px; }
.step-arrow { font-size: 24px; color: var(--muted); align-self: center; display: none; }
@media (min-width: 900px) { .step-arrow { display: block; } }

/* ── Platforms ── */
.platforms { padding: 60px 0; background: #fff; text-align: center; }
.platforms h2 { font-size: 28px; font-weight: 800; margin-bottom: 36px; }
.platform-logos { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.platform-logo { display: flex; flex-direction: column; align-items: center; gap: 8px; font-weight: 600; color: var(--text); }
.platform-logo img { width: 48px; height: 48px; object-fit: contain; }
.coming-soon { color: var(--muted); }

/* ── Tone section ── */
.tone-section { padding: 80px 0; background: var(--bg); }
.tone-section h2 { text-align: center; font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.tone-section h2 em { color: var(--blue); font-style: normal; }
.section-sub { text-align: center; color: var(--muted); max-width: 600px; margin: 0 auto 40px; }
.tone-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 20px; }
.tone-card { background: #fff; border-radius: 10px; padding: 20px; border: 1px solid var(--border); }
.tone-card strong { display: block; font-size: 15px; margin-bottom: 6px; color: var(--text); }
.tone-card p { color: var(--muted); font-size: 14px; }
.tone-note { text-align: center; color: var(--muted); font-size: 14px; }

/* ── Pricing teaser ── */
.pricing-teaser { padding: 80px 0; background: #fff; }
.pricing-teaser h2 { text-align: center; font-size: 32px; font-weight: 800; margin-bottom: 12px; }
.plan-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 40px 0 16px; }
.plan-card { background: var(--bg); border-radius: 12px; padding: 24px; border: 1px solid var(--border); position: relative; }
.plan-featured { background: var(--blue-light); border-color: var(--blue); border-width: 2px; }
.plan-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--blue); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 20px; white-space: nowrap; }
.plan-name { font-weight: 700; font-size: 18px; margin-bottom: 4px; }
.plan-price { font-size: 32px; font-weight: 800; color: var(--blue); margin-bottom: 16px; }
.plan-price span { font-size: 16px; font-weight: 500; color: var(--muted); }
.plan-card ul { list-style: none; margin-bottom: 20px; }
.plan-card li { color: var(--muted); font-size: 14px; padding: 4px 0; }
.plan-card li::before { content: "✓ "; color: #10B981; font-weight: 700; }
.pricing-note { text-align: center; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.pricing-note a { color: var(--blue); }
.pricing-link { display: block; text-align: center; color: var(--blue); font-weight: 600; font-size: 15px; }

/* ── FAQ ── */
.faq { padding: 80px 0; background: var(--bg); }
.faq h2 { text-align: center; font-size: 32px; font-weight: 800; margin-bottom: 40px; }
.faq-list { max-width: 700px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: #fff; border-radius: 10px; border: 1px solid var(--border); overflow: hidden; }
.faq-item summary { padding: 18px 20px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: "+"; font-size: 20px; color: var(--blue); }
.faq-item[open] summary::after { content: "−"; }
.faq-item p { padding: 0 20px 18px; color: var(--muted); font-size: 15px; line-height: 1.7; }

/* ── Final CTA ── */
.final-cta { padding: 80px 0; background: var(--blue); text-align: center; color: #fff; }
.final-cta h2 { font-size: 36px; font-weight: 800; margin-bottom: 12px; }
.final-cta p { opacity: 0.85; margin-bottom: 28px; font-size: 16px; }
.final-cta .btn-primary { background: #fff; color: var(--blue); }
.final-cta .btn-primary:hover { background: #EFF6FF; }

/* ── Footer ── */
.footer { padding: 28px 0; border-top: 1px solid var(--border); background: #fff; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: 14px; }
.footer-links a:hover { color: var(--blue); }
.footer-copy { color: var(--muted); font-size: 13px; }

@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .nav-links a:not(.btn) { display: none; }
  .footer-inner { flex-direction: column; text-align: center; }
}