:root {
  --blue-900: #0b1b2b;
  --blue-800: #112c45;
  --blue-600: #1d4c74;
  --blue-500: #2a6ea3;
  --gray-900: #0f1722;
  --gray-700: #3b4856;
  --gray-500: #6a7a8b;
  --gray-200: #e2e8f0;
  --gray-100: #f4f7fb;
  --green: #2fb171;
  --red: #e0534e;
  --bg: #ffffff;
  --card: #f7f9fc;
  --shadow: 0 24px 60px rgba(12, 26, 44, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  color: var(--gray-900);
  background: var(--bg);
  line-height: 1.6;
}

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

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

h1, h2, h3 {
  font-family: "IBM Plex Serif", serif;
  line-height: 1.2;
  margin: 0 0 16px;
}

h1 { font-size: clamp(2.2rem, 3.5vw, 3.6rem); }

h2 { font-size: clamp(1.8rem, 2.6vw, 2.6rem); }

h3 { font-size: 1.3rem; }

p { margin: 0 0 16px; }

.container { width: min(1200px, 92vw); margin: 0 auto; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 16px;
  background: #000;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 1000;
}
.skip-link:focus { left: 16px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(15, 23, 34, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; color: var(--blue-900); }
.brand-name { font-size: 1.05rem; letter-spacing: 0.02em; }
.logo { width: 34px; height: 34px; }

.nav { display: flex; gap: 24px; font-size: 0.95rem; color: var(--gray-700); }
.nav a { position: relative; padding-bottom: 4px; }
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--blue-600);
  transition: width 0.2s ease;
}
.nav a:hover::after { width: 100%; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 12px 24px rgba(29, 76, 116, 0.25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 18px 32px rgba(29, 76, 116, 0.3); }
.btn-ghost { border: 1px solid var(--gray-200); color: var(--blue-800); background: #fff; }

.hero {
  padding: 120px 0 80px;
  background: radial-gradient(circle at top, rgba(42, 110, 163, 0.18), transparent 55%),
    linear-gradient(140deg, #f8fbff, #ffffff 60%);
}
.hero-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: center; }
.hero-copy { display: flex; flex-direction: column; gap: 16px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(29, 76, 116, 0.12);
  color: var(--blue-800);
  font-weight: 600;
  width: fit-content;
}
.lead { font-size: 1.1rem; color: var(--gray-700); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.inn-form { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.input-label { font-size: 0.9rem; color: var(--gray-700); }
.input-row { display: flex; gap: 12px; flex-wrap: wrap; }
input[type="text"] {
  flex: 1;
  min-width: 220px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--gray-200);
  font-size: 1rem;
}
input[aria-invalid="true"] {
  border-color: var(--red);
  box-shadow: 0 0 0 3px rgba(224, 83, 78, 0.15);
}
.form-hints { min-height: 20px; display: flex; flex-direction: column; gap: 4px; }
.form-error { color: var(--red); font-size: 0.9rem; }
.form-success-msg { color: var(--green); font-size: 0.9rem; }

.trust-row { display: flex; gap: 12px; flex-wrap: wrap; }
.chip { padding: 6px 12px; border-radius: 999px; background: var(--gray-100); font-size: 0.85rem; color: var(--gray-700); }

.hero-visual { display: flex; flex-direction: column; gap: 20px; }
.visual-card { background: #fff; border-radius: 20px; padding: 18px; box-shadow: var(--shadow); }
.visual-caption { font-size: 0.9rem; color: var(--gray-500); margin-top: 8px; }
.hero-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.metric { font-size: 1.4rem; font-weight: 700; margin: 0; color: var(--blue-800); }
.metric-label { margin: 0; font-size: 0.85rem; color: var(--gray-500); }

.section { padding: 80px 0; scroll-margin-top: 90px; }
.section-alt { background: var(--gray-100); }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 32px; }
.card { background: #fff; padding: 24px; border-radius: 18px; box-shadow: 0 12px 30px rgba(15, 23, 34, 0.08); }
.card-highlight { border: 2px solid var(--blue-500); }

.feature-grid { display: grid; gap: 24px; margin-top: 32px; }
.feature-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  background: #fff;
  padding: 20px;
  border-radius: 18px;
  align-items: center;
  box-shadow: 0 12px 30px rgba(15, 23, 34, 0.08);
}

.ai-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: center; }
.ai-visual { background: #fff; padding: 24px; border-radius: 22px; box-shadow: var(--shadow); }
.list { padding-left: 18px; color: var(--gray-700); }
.muted { color: var(--gray-500); }

.slider { margin-top: 32px; position: relative; }
.slider-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(260px, 1fr);
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 8px;
}
.slide { scroll-snap-align: start; background: #fff; border-radius: 18px; padding: 16px; box-shadow: 0 12px 30px rgba(15, 23, 34, 0.08); }
.slide figcaption { margin-top: 8px; font-size: 0.9rem; color: var(--gray-500); }
.slider-btn {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: var(--blue-600);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(29, 76, 116, 0.3);
}
.slider-btn:hover { background: var(--blue-500); }
.slider-btn[data-slider-prev] { left: -12px; }
.slider-btn[data-slider-next] { right: -12px; }

.steps { list-style: none; padding: 0; display: grid; gap: 16px; counter-reset: step; margin-top: 32px; }
.steps li {
  background: #fff;
  padding: 18px 20px 18px 60px;
  border-radius: 16px;
  position: relative;
  box-shadow: 0 12px 30px rgba(15, 23, 34, 0.08);
}
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 18px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--blue-600);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 600;
}

.about-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: center; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-top: 24px; }
.stat { background: var(--gray-100); padding: 16px; border-radius: 16px; }
.stat-value { font-weight: 700; font-size: 1.2rem; margin: 0; color: var(--blue-800); }
.stat-label { margin: 0; color: var(--gray-500); font-size: 0.9rem; }

.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-top: 32px; }
.price { font-size: 1.4rem; font-weight: 700; color: var(--blue-800); }

.cta { background: linear-gradient(120deg, #0f2740, #163859 70%); color: #fff; }
.cta .muted { color: rgba(255, 255, 255, 0.7); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta input[type="text"] { background: #fff; }

.site-footer { padding: 40px 0; background: #0b1b2b; color: #fff; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 16px; color: rgba(255, 255, 255, 0.7); }
.footer-brand .brand-name { color: #fff; }

@media (max-width: 1024px) {
  .hero-grid, .ai-grid, .about-grid { grid-template-columns: 1fr; }
  .feature-card { grid-template-columns: 120px 1fr; }
  .slider-btn { display: none; }
}

@media (max-width: 768px) {
  .header-inner { flex-wrap: wrap; }
  .nav { width: 100%; justify-content: space-between; flex-wrap: wrap; }
  .hero { padding-top: 100px; }
  .hero-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card { grid-template-columns: 1fr; }
  .cta-inner { align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero-actions, .input-row { flex-direction: column; }
  .hero-metrics { grid-template-columns: 1fr; }
  .nav { gap: 12px; font-size: 0.9rem; }
}