:root {
  --navy: #0f1b33;
  --navy-light: #1c2c4d;
  --blue: #2156d6;
  --blue-dark: #1840a8;
  --gray-50: #f7f8fa;
  --gray-100: #eef0f4;
  --gray-300: #d7dbe3;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 4px 16px rgba(15, 27, 51, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 { font-weight: 700; line-height: 1.2; margin: 0; }

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--gray-100);
}

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

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
}

.logo-dot { color: var(--blue); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
}

.nav-links a:hover { color: var(--navy); }
.nav-links a.active { color: var(--blue); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  background: var(--navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
}

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

.btn-ghost {
  background: var(--white);
  color: var(--navy);
  border-color: var(--gray-300);
}

.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

.btn-small {
  padding: 9px 18px;
  font-size: 14px;
}

/* Hero */
.hero {
  padding: 100px 0 80px;
  background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.hero-inner { max-width: 760px; }

.eyebrow {
  color: var(--blue);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 16px;
}

.hero h1 {
  font-size: 48px;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 19px;
  color: var(--gray-700);
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* Sections */
.section { padding: 88px 0; }
.section-alt { background: var(--gray-50); }

.section h2 {
  font-size: 34px;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--gray-500);
  font-size: 17px;
  margin-bottom: 48px;
  max-width: 600px;
}

/* Grid / Cards */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.card-icon { font-size: 28px; margin-bottom: 16px; }

.card h3 { font-size: 19px; margin-bottom: 10px; }

.card p { color: var(--gray-700); font-size: 15px; margin: 0; }

/* Steps */
.step { text-align: left; }

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 16px;
}

.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { color: var(--gray-700); font-size: 14px; margin: 0; }

/* Why section */
.why-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: center;
}

.why-list { list-style: none; margin: 24px 0 0; padding: 0; }

.why-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
  font-size: 16px;
}

.why-list li:last-child { border-bottom: none; }

.why-list strong { color: var(--navy); }

.why-stat-card {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
}

.why-stat {
  font-size: 56px;
  font-weight: 800;
  color: #8db4ff;
  margin: 0 0 12px;
}

.why-stat-label { margin: 0; color: var(--gray-300); font-size: 15px; }

/* Contact */
.section-contact { background: var(--gray-50); }

.contact-inner { text-align: center; }
.contact-inner .section-sub { margin: 0 auto 40px; }

.contact-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 460px;
  margin: 0 auto;
  padding: 40px;
  text-align: left;
}

.contact-row {
  display: flex;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 16px;
}

.contact-row a:hover { color: var(--blue); }

.contact-label {
  color: var(--gray-500);
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.contact-btn {
  display: block;
  text-align: center;
  margin-top: 28px;
}

/* Teasers (homepage) */
.teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.teaser-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.teaser-card .card-icon { font-size: 26px; margin-bottom: 14px; }
.teaser-card h3 { font-size: 17px; margin-bottom: 8px; }
.teaser-card p { color: var(--gray-700); font-size: 14px; margin: 0 0 14px; }
.teaser-card .teaser-link { color: var(--blue); font-weight: 600; font-size: 14px; }
.teaser-card .teaser-link:hover { text-decoration: underline; }

.section-cta { text-align: center; margin-top: 8px; }
.section-cta-left { text-align: left; margin-top: 32px; }

.why-teaser { display: flex; gap: 32px; align-items: center; }
.why-teaser .why-stat-card { flex: 0 0 220px; }
.why-teaser-text { flex: 1; }
.why-teaser-text p { color: var(--gray-700); font-size: 16px; margin-bottom: 24px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--gray-100);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--gray-500);
}

/* Responsive */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .teaser-grid { grid-template-columns: repeat(2, 1fr); }
  .why-inner { grid-template-columns: 1fr; }
  .why-teaser { flex-direction: column; }
  .why-teaser .why-stat-card { flex: none; width: 100%; }
}

@media (max-width: 640px) {
  .nav-toggle { display: flex; }

  .nav-links {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    box-shadow: var(--shadow);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .nav-links.open { max-height: 360px; }

  .nav-links a {
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-100);
    font-size: 16px;
  }

  .nav-links a.btn {
    display: block;
    margin: 16px 24px;
    text-align: center;
  }

  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 16px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { text-align: center; width: 100%; }

  .grid-3, .grid-4, .teaser-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section h2 { font-size: 26px; }
  .section-sub { margin-bottom: 32px; }

  .contact-card { padding: 28px 24px; }
  .contact-row { flex-direction: column; align-items: flex-start; gap: 4px; }

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