:root {
  --primary: hsl(135, 59%, 49%);
  --primary-dark: hsl(135, 59%, 40%);
  --primary-light: hsl(135, 55%, 94%);
  --ink: #16181d;
  --muted: #5b6270;
  --border: #e6e8ec;
  --bg-alt: #f7f8fa;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(16, 20, 30, 0.08);
  --max-width: 1160px;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.5;
  background: #fff;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  line-height: 1.2;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  text-align: center;
}

.section-sub {
  text-align: center;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 48px;
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px hsla(135, 59%, 49%, 0.35);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.btn-ghost {
  color: var(--ink);
  font-weight: 600;
  padding: 10px 14px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
}

.brand-logo {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  gap: 28px;
}

.main-nav a {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:hover {
  color: var(--ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

/* Hero */
.hero {
  padding: 72px 0;
  background: linear-gradient(180deg, var(--primary-light) 0%, #fff 70%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-sub {
  font-size: 1.1rem;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* Phone mock */
.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-mock {
  width: 300px;
  background: #fff;
  border-radius: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 16px 14px 24px;
}

.phone-notch {
  width: 60px;
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  margin: 0 auto 16px;
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.85rem;
  max-width: 85%;
  line-height: 1.4;
}

.bubble-in {
  background: var(--bg-alt);
  color: var(--ink);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.bubble-out {
  background: var(--primary);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

/* Logos strip */
.logos-strip {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

.logos-strip p {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}

/* Sections */
.section {
  padding: 88px 0;
}

.section-alt {
  background: var(--bg-alt);
}

/* Steps */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 22px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.05rem;
}

.step p {
  font-size: 0.92rem;
  margin: 0;
}

/* Benefits grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.benefit-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.benefit-card h3 {
  font-size: 1.05rem;
}

.benefit-card p {
  font-size: 0.92rem;
  margin: 0;
}

/* FAQ */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  float: right;
  font-weight: 700;
  color: var(--primary-dark);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin-top: 12px;
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Final CTA */
.cta-final {
  background: var(--ink);
  color: #fff;
  border-radius: 0;
}

.cta-final-inner {
  text-align: center;
}

.cta-final h2 {
  color: #fff;
}

.cta-final p {
  color: rgba(255, 255, 255, 0.75);
  max-width: 480px;
  margin: 0 auto 28px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.footer-brand .brand-logo {
  width: 24px;
  height: 24px;
}

.footer-inner p {
  margin: 0;
  font-size: 0.85rem;
}

.footer-inner a {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-dark);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .header-actions .btn-ghost {
    display: none;
  }

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

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

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}