:root {
  --green: #00d4a8;
  --green-dark: #00b892;
  --green-soft: #e8fbf5;
  --ink: #0f172a;
  --ink-muted: #475569;
  --ink-light: #64748b;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-dark: #0b1220;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-pill: 999px;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  --max: 1180px;
  --font: "Inter", system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  filter: hue-rotate(1deg);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

.container {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 36px;
  height: 36px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav a:not(.btn) {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-muted);
  transition: color 0.2s;
}

.nav a:not(.btn):hover { color: var(--ink); }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-size: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--green);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(0, 212, 168, 0.35);
}

.btn-primary:hover { background: var(--green-dark); }

.btn-outline {
  border: 1.5px solid var(--ink);
  color: var(--ink);
  background: transparent;
}

.btn-ghost {
  color: var(--ink);
  background: rgba(15, 23, 42, 0.06);
}

.btn-sm { padding: 0.6rem 1.1rem; font-size: 0.875rem; }
.btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }

/* Hero */
.hero {
  padding: 4rem 0 5rem;
  background:
    radial-gradient(ellipse 80% 60% at 70% 0%, rgba(0, 212, 168, 0.18), transparent),
    linear-gradient(180deg, #f0fdf8 0%, #fff 60%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.rating-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
  background: #fff;
  border: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.rating-pill .stars { color: #fbbf24; letter-spacing: 1px; }

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
  font-weight: 800;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--ink-muted);
  max-width: 34rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero-stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
}

.hero-stat span { font-size: 0.875rem; color: var(--ink-light); }

.hero-visual {
  position: relative;
}

.hero-card {
  background: #fff;
  border-radius: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 1.5rem;
}

.hero-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.hero-card-head h3 { margin: 0; font-size: 1rem; }

.badge-live {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--green-soft);
  color: var(--green-dark);
}

.dashboard-rows { display: grid; gap: 0.75rem; }

.dash-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: var(--bg-soft);
  font-size: 0.9rem;
}

.dash-row strong { font-weight: 700; }

.dash-row.positive strong { color: #059669; }
.dash-row.warning strong { color: #d97706; }

.hero-float {
  position: absolute;
  background: #fff;
  border-radius: 14px;
  padding: 0.85rem 1rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  font-size: 0.8rem;
}

.hero-float span { display: block; color: var(--ink-light); margin-bottom: 0.15rem; }
.hero-float strong { font-size: 1.1rem; }

.hero-float--tax { top: -12px; right: -8px; }
.hero-float--saved { bottom: 24px; left: -16px; }

/* Sections */
.section {
  padding: 5rem 0;
}

.section-soft { background: var(--bg-soft); }
.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-head h2 {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  line-height: 1.15;
}

.section-head p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

.section-dark .section-head p { color: #94a3b8; }

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 0.75rem;
}

/* Personas */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.persona-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: box-shadow 0.2s, transform 0.2s;
}

.persona-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.persona-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  background: var(--green-soft);
  color: var(--green-dark);
  margin-bottom: 0.75rem;
}

.persona-card blockquote {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-muted);
  line-height: 1.55;
}

.persona-card cite {
  display: block;
  margin-top: 1rem;
  font-style: normal;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--ink);
}

/* Marquee pain points */
.marquee-wrap {
  overflow: hidden;
  padding: 2rem 0;
  background: var(--ink);
  color: #fff;
}

.marquee-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: marquee 35s linear infinite;
}

.marquee-track span {
  white-space: nowrap;
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  opacity: 0.85;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.pain-intro {
  text-align: center;
  padding: 4rem 0 2rem;
}

.pain-intro h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 1rem;
  letter-spacing: -0.03em;
}

.pain-intro p {
  max-width: 640px;
  margin: 0 auto;
  color: var(--ink-muted);
  font-size: 1.05rem;
}

/* Compare */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.compare-col {
  padding: 2rem;
}

.compare-col.bad {
  background: #fef2f2;
}

.compare-col.good {
  background: var(--green-soft);
}

.compare-col h3 {
  margin: 0 0 1.5rem;
  font-size: 1.1rem;
}

.compare-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.compare-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.95rem;
}

.compare-list .icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.bad .icon { background: #fecaca; color: #b91c1c; }
.good .icon { background: var(--green); color: var(--ink); }

/* Features tabs */
.features-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.tab-btn {
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--ink-muted);
  border: 1px solid var(--border);
  background: #fff;
  transition: all 0.2s;
}

.tab-btn.active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.feature-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: var(--shadow);
}

.feature-panel.active { display: grid; }

.feature-panel h3 {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.feature-panel .sub {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green-dark);
  margin-bottom: 1rem;
}

.feature-panel p {
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
}

.feature-mock {
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 1.5rem;
  border: 1px solid var(--border);
}

.mock-invoice {
  background: #fff;
  border-radius: 12px;
  padding: 1.25rem;
  border: 1px solid var(--border);
}

.mock-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.875rem;
}

.mock-row:last-child { border-bottom: none; font-weight: 700; }

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.review-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.review-card .stars { color: #fbbf24; margin-bottom: 0.75rem; }

.review-card p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.review-meta {
  font-size: 0.8rem;
  color: var(--ink-light);
}

.review-meta strong { display: block; color: var(--ink); font-size: 0.9rem; }

/* ROI */
.roi-box {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  background: linear-gradient(135deg, var(--ink) 0%, #1e293b 100%);
  color: #fff;
  border-radius: 24px;
  padding: 3rem;
}

.roi-stat { text-align: center; }

.roi-stat strong {
  display: block;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.roi-stat span { color: #94a3b8; font-size: 0.95rem; }

.roi-equals {
  font-size: 2.5rem;
  font-weight: 300;
  opacity: 0.5;
}

/* Pricing */
.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.pricing-toggle span { font-weight: 600; font-size: 0.95rem; color: var(--ink-light); }
.pricing-toggle span.active { color: var(--ink); }

.toggle-switch {
  width: 52px;
  height: 28px;
  border-radius: var(--radius-pill);
  background: var(--ink);
  position: relative;
  padding: 3px;
}

.toggle-switch::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: transform 0.2s;
}

.toggle-switch.annual::after { transform: translateX(24px); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}

.price-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.price-card.featured {
  border-color: var(--green);
  box-shadow: 0 0 0 2px rgba(0, 212, 168, 0.25);
}

.price-card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }

.price-amount {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.price-note {
  font-size: 0.8rem;
  color: var(--ink-light);
  margin-bottom: 1.25rem;
  min-height: 2.5rem;
}

.price-features {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  flex: 1;
  display: grid;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--ink-muted);
}

.price-features li::before {
  content: "✓";
  color: var(--green-dark);
  font-weight: 700;
  margin-right: 0.5rem;
}

.price-card .btn { width: 100%; margin-top: auto; }

/* FAQ */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: grid;
  gap: 0.75rem;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.faq-q {
  width: 100%;
  text-align: left;
  padding: 1.15rem 1.25rem;
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-q::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--ink-light);
  transition: transform 0.2s;
}

.faq-item.open .faq-q::after { transform: rotate(45deg); }

.faq-a {
  display: none;
  padding: 0 1.25rem 1.15rem;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

.faq-item.open .faq-a { display: block; }

/* CTA */
.cta-band {
  text-align: center;
  padding: 5rem 2rem;
  background:
    radial-gradient(circle at 50% 0%, rgba(0, 212, 168, 0.2), transparent 55%),
    var(--bg-soft);
}

.cta-band h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 1.5rem;
  letter-spacing: -0.03em;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 4rem 0 2rem;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-grid h4 {
  color: #fff;
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.footer-grid a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  line-height: 1.7;
}

.acknowledgement {
  margin-top: 1.5rem;
  font-size: 0.8rem;
  opacity: 0.85;
}

/* Mobile nav */
@media (max-width: 960px) {
  .hero-grid,
  .feature-panel,
  .compare-grid,
  .roi-box { grid-template-columns: 1fr; }

  .compare-col.bad { border-bottom: 1px solid var(--border); }

  .roi-equals { text-align: center; }

  .footer-grid { grid-template-columns: 1fr 1fr; }

  .nav {
    position: fixed;
    inset: 72px 0 auto 0;
    background: #fff;
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle { display: inline-grid; place-items: center; }

  .hero-float--tax { right: 0; }
  .hero-float--saved { left: 0; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
}