:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f8fb;
  --color-text: #101828;
  --color-text-muted: #4b5768;
  --color-border: #e3e8ef;
  --color-primary: #1450e0;
  --color-primary-dark: #0f3ab0;
  --color-accent: #0fb8a3;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08);
  --max-width: 1140px;
}

* {
  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(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.15s ease;
}

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

.nav-cta {
  display: inline-flex;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

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

/* Hero */

.hero {
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  padding: 96px 0 80px;
}

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

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 0 16px;
}

.eyebrow.center {
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 0 32px;
}

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

/* Sections */

.section {
  padding: 88px 0;
}

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

.section-title {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

.section-title.center {
  text-align: center;
}

.section-sub {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 48px;
}

.section-sub.center {
  text-align: center;
}

/* Services */

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.service-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.3rem;
  margin: 0 0 12px;
}

.service-card p {
  color: var(--color-text-muted);
  margin: 0 0 20px;
}

.service-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--color-text);
}

.service-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Why us */

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.why-item h3 {
  font-size: 1.1rem;
  margin: 0 0 8px;
}

.why-item p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.95rem;
}

/* About */

.about-inner p {
  color: var(--color-text-muted);
  max-width: 680px;
}

/* Contact */

.contact-inner {
  max-width: 620px;
}

.contact-form {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-row {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row label {
  font-size: 0.9rem;
  font-weight: 600;
}

.form-row input,
.form-row select,
.form-row textarea {
  font: inherit;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.contact-form .btn {
  width: 100%;
}

.form-note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 16px 0 0;
}

.form-note a {
  color: var(--color-primary);
  font-weight: 600;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 56px 0 24px;
  background: var(--color-bg-alt);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-tagline {
  color: var(--color-text-muted);
  margin: 8px 0 0;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-links h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin: 0 0 14px;
}

.footer-links a {
  display: block;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Responsive */

@media (max-width: 860px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .nav,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav.open {
    display: flex;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
  }

  .nav.open a {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

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

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

  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }
}