:root {
  --ink: #102a22;
  --ink-soft: #3d4f4a;
  --paper: #f3f6f2;
  --paper-2: #e7eee8;
  --card: #ffffff;
  --line: #c9d6ce;
  --accent: #0f8f5f;
  --accent-deep: #0a6b47;
  --glow: rgba(15, 143, 95, 0.18);
  --warn: #b45309;
  --danger: #b91c1c;
  --radius: 18px;
  --font-display: 'Outfit', system-ui, sans-serif;
  --font: 'IBM Plex Sans', system-ui, sans-serif;
}

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

body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(ellipse 90% 50% at 10% -10%, var(--glow), transparent 55%),
    linear-gradient(180deg, #eef4ef 0%, var(--paper) 40%, #e8efe9 100%);
  min-height: 100vh;
  line-height: 1.55;
}

a { color: var(--accent-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(243, 246, 242, 0.88);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--ink);
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.nav a { color: var(--ink-soft); font-weight: 500; text-decoration: none; }
.nav a.active, .nav a:hover { color: var(--accent-deep); }
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  width: 42px; height: 42px;
  font-size: 1.2rem;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  padding: 0.7rem 1.25rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none !important;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-deep); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.nav-cta { background: var(--ink); color: #fff; padding: 0.5rem 0.95rem; }
.btn.full { width: 100%; }

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  padding: 3.5rem 1.5rem 2.5rem;
  max-width: 1100px;
  margin: 0 auto;
  min-height: calc(100vh - 80px);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent-deep);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.brand-hero {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 34rem;
  margin-bottom: 1.5rem;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.cta-row.center { justify-content: center; }

.hero-visual {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pulse-ring {
  position: absolute;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--glow), transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.chat-stack {
  position: relative;
  width: min(100%, 340px);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  animation: rise 0.8s ease both;
}

.bubble {
  max-width: 85%;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  font-size: 0.92rem;
  box-shadow: 0 10px 30px rgba(16, 42, 34, 0.08);
}
.bubble.in { align-self: flex-start; background: var(--card); border: 1px solid var(--line); }
.bubble.out { align-self: flex-end; background: #d8f3e5; border: 1px solid #b7e4cd; }

@keyframes pulse { 50% { transform: scale(1.08); opacity: 0.7; } }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

.section, .page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}
.section.alt {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
  max-width: none;
  padding-inline: max(1.5rem, calc((100% - 1100px) / 2 + 1.5rem));
}
.section h2, .page h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}
.section-lead { color: var(--ink-soft); max-width: 40rem; margin-bottom: 1.75rem; }
.feature-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.feature-row article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.feature-row h3 {
  font-family: var(--font-display);
  margin-bottom: 0.4rem;
}

.steps {
  list-style: none;
  display: grid;
  gap: 0.85rem;
  margin: 1.25rem 0 1.5rem;
  counter-reset: step;
}
.steps li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1.1rem 1rem 3rem;
  position: relative;
}
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0.9rem; top: 0.95rem;
  width: 1.5rem; height: 1.5rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.plans {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.plan {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 2px var(--glow); }
.plan h3 { font-family: var(--font-display); font-size: 1.2rem; }
.plan .price { font-size: 2rem; font-weight: 800; font-family: var(--font-display); color: var(--accent-deep); }
.plan .price small { font-size: 0.85rem; color: var(--ink-soft); font-weight: 500; }
.plan ul { list-style: none; font-size: 0.9rem; color: var(--ink-soft); margin: 0.5rem 0 1rem; }
.plan li { padding: 0.2rem 0; }
.plan .btn { margin-top: auto; }

.page.narrow { max-width: 520px; }
.auth-box, .contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
label { font-size: 0.85rem; color: var(--ink-soft); display: flex; flex-direction: column; gap: 0.35rem; }
input, textarea {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
.error { color: var(--danger); font-size: 0.9rem; }
.hidden { display: none !important; }
.center { text-align: center; }
.mt { margin-top: 1.25rem; }
.muted { color: var(--ink-soft); font-size: 0.9rem; }

.account-chip {
  background: #dff5ea;
  border: 1px solid #b7e4cd;
  border-radius: 12px;
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.92rem;
}
.invoice-box {
  margin-top: 1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.legal p { margin-bottom: 1rem; color: var(--ink-soft); }

.biz-pick {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.75rem 1rem 1rem;
  margin: 0.5rem 0 1rem;
  background: #f4faf5;
}
.biz-pick legend { font-weight: 700; padding: 0 0.35rem; }
.biz-pick .sm { font-size: 0.82rem; margin: 0.25rem 0 0.75rem; }
.biz-option {
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  padding: 0.55rem 0.4rem;
  border-radius: 8px;
  cursor: pointer;
}
.biz-option:hover { background: rgba(15, 118, 68, 0.06); }
.biz-option input { margin-top: 0.25rem; }
.biz-option span { display: flex; flex-direction: column; gap: 0.15rem; }
.biz-option strong { font-size: 0.95rem; }
.biz-option small { color: var(--ink-soft); font-size: 0.8rem; line-height: 1.35; }

.footer {
  margin-top: 2rem;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  background: #e7eee8;
}
.footer nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.copy { color: var(--ink-soft); font-size: 0.85rem; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 2rem; }
  .feature-row { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    padding: 1rem;
    flex-direction: column;
    align-items: stretch;
  }
  .nav.open { display: flex; }
}