:root {
  --color-primary: #1f7ec9;
  --color-primary-dark: #15578c;
  --color-ink: #12202e;
  --color-text: #2d3b47;
  --color-text-muted: #5b6b79;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fb;
  --color-border: #e4e9ee;
  --color-accent: #ff7a45;
  --color-accent-dark: #e2622f;
  --font-heading: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius: 14px;
  --shadow-card: 0 8px 24px rgba(18, 32, 46, 0.08);
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
[id] { scroll-margin-top: 100px; }
body { margin: 0; font-family: var(--font-body); color: var(--color-text); background: var(--color-bg); line-height: 1.6; }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-ink); line-height: 1.2; margin: 0 0 16px; }
h1 { font-size: 48px; font-weight: 800; }
h2 { font-size: 32px; font-weight: 700; }
h3 { font-size: 20px; font-weight: 600; }
p { margin: 0 0 16px; }
a { color: var(--color-primary); text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 13px; font-weight: 700; color: var(--color-primary); margin-bottom: 12px; }
.lead { font-size: 18px; color: var(--color-text-muted); max-width: 620px; }
.section { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }

.btn { display: inline-block; padding: 14px 28px; border-radius: 999px; font-weight: 600; font-family: var(--font-heading); border: 2px solid transparent; cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: var(--color-accent-dark); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--color-border); color: var(--color-ink); }

.site-header { position: sticky; top: 0; z-index: 100; background: #fff; border-bottom: 1px solid var(--color-border); min-height: 84px; }
.navbar { max-width: var(--max-width); margin: 0 auto; padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; position: relative; }
.navbar .logo img { height: 40px; }
.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; align-items: center; }
.nav-links > li { position: relative; }
.nav-links > li.has-mega { position: static; }
.nav-links a { color: var(--color-ink); font-weight: 600; font-size: 15px; }
.nav-links a:hover { color: var(--color-primary); }
.mega-menu-panel { display: none; position: absolute; top: 100%; left: 24px; right: 24px; background: #fff; box-shadow: var(--shadow-card); border-radius: var(--radius); padding: 24px; gap: 24px; grid-template-columns: repeat(4, minmax(0, 1fr)); z-index: 200; }
.has-mega.open .mega-menu-panel { display: grid; }
.has-mega:focus-within .mega-menu-panel { display: grid; }
.mega-col h4 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin: 0 0 10px; }
.mega-col a { display: block; padding: 6px 0; font-size: 14px; font-weight: 500; }
.mobile-nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }
.header-cta { display: flex; align-items: center; gap: 16px; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .mobile-nav-toggle { display: block; }
  .site-header.nav-open .nav-links { display: flex; flex-direction: column; align-items: flex-start; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 16px 24px; border-top: 1px solid var(--color-border); }
  .mega-menu-panel { position: static; grid-template-columns: 1fr; box-shadow: none; padding: 8px 0 0 12px; }
}

.hero { padding: 100px 0 80px; background: linear-gradient(180deg, var(--color-bg-alt), #fff); }
.hero h1 { font-size: 56px; max-width: 780px; }
.hero-actions { display: flex; gap: 16px; margin-top: 28px; flex-wrap: wrap; }
.page-hero { padding: 80px 0 60px; background: var(--color-bg-alt); }
.page-hero h1 { font-size: 42px; }

.card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-card); }
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.service-card, .feature-card, .related-card, .case-card, .why-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-card); transition: transform 0.2s ease, box-shadow 0.2s ease; }
.service-card:hover, .related-card:hover, .case-card:hover { transform: translateY(-4px); box-shadow: 0 16px 32px rgba(18,32,46,0.12); }
.related-card { display: block; font-weight: 700; color: var(--color-ink); text-align: center; }
.service-card, .case-card { color: var(--color-text); }

.trust-bar { padding: 40px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.trust-bar-label { text-align: center; color: var(--color-text-muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 20px; }
.trust-logos { display: flex; flex-wrap: wrap; justify-content: center; gap: 40px; align-items: center; }
.trust-logos img { height: 36px; filter: grayscale(1); opacity: 0.6; transition: all 0.2s ease; }
.trust-logos img:hover { filter: none; opacity: 1; }

.ai-spotlight { background: var(--color-ink); color: #fff; padding: 80px 24px; border-radius: var(--radius); }
.ai-spotlight .eyebrow { color: var(--color-accent); }
.ai-spotlight h2, .ai-spotlight p { color: #fff; }
.ai-spotlight .grid-3 .card { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.12); }
.ai-spotlight .card h3 { color: #fff; }
.ai-spotlight .card p { color: rgba(255,255,255,0.75); }

.process-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.process-step .step-number { width: 48px; height: 48px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; margin: 0 auto 16px; }

.stat-band { background: var(--color-bg-alt); padding: 60px 0; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-number { font-family: var(--font-heading); font-size: 40px; font-weight: 800; color: var(--color-primary); }
.stat-label { color: var(--color-text-muted); font-size: 14px; }

.cta-banner { background: var(--color-primary); color: #fff; padding: 60px 24px; text-align: center; border-radius: var(--radius); }
.cta-banner h2 { color: #fff; }

.use-case-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px; }
.use-case-list li { padding-left: 28px; position: relative; font-weight: 500; }
.use-case-list li::before { content: "✓"; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }

.site-footer { background: var(--color-ink); color: rgba(255,255,255,0.75); padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-col h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; }
.footer-col a { display: block; color: rgba(255,255,255,0.7); padding: 4px 0; font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); margin-top: 40px; padding-top: 20px; text-align: center; font-size: 13px; color: rgba(255,255,255,0.5); }

.form-field { margin-bottom: 20px; }
.form-field label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 14px; }
.form-field input, .form-field textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: 10px; font-family: var(--font-body); font-size: 15px; }

@media (max-width: 900px) {
  .hero h1 { font-size: 38px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process-strip, .stat-grid { grid-template-columns: 1fr 1fr; }
  .use-case-list { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .footer-grid, .stat-grid, .process-strip { grid-template-columns: 1fr; }
}

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card);
  z-index: 300;
  transition: transform 0.15s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; fill: #fff; }
@media (max-width: 480px) {
  .whatsapp-float { bottom: 16px; right: 16px; width: 48px; height: 48px; }
  .whatsapp-float svg { width: 26px; height: 26px; }
}