:root {
  --bg: #f7f8fa;
  --bg-alt: #ffffff;
  --text: #1f2430;
  --text-muted: #5b6472;
  --accent: #2f6feb;
  --accent-dark: #1d4fb8;
  --border: #e3e6ea;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(20, 25, 40, 0.06);
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

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

/* Header */

.site-header {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  cursor: pointer;
}

.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}

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

nav.main-nav a.active,
nav.main-nav a:hover {
  color: var(--text);
  text-decoration: none;
}

/* Hero */

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

.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin: 0 0 32px;
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-art {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.hero-art .code-line {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 4px 0;
  white-space: pre;
}

.hero-art .code-line .kw { color: #a626a4; }
.hero-art .code-line .fn { color: var(--accent); }
.hero-art .code-line .str { color: #50a14f; }
.hero-art .code-line .cm { color: #9199a8; }

/* Buttons */

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

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

.btn-secondary:hover {
  border-color: var(--accent);
  text-decoration: none;
}

/* Sections */

section {
  padding: 72px 0;
}

section.alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-heading {
  max-width: 640px;
  margin: 0 0 44px;
}

.section-heading .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 10px;
}

.section-heading h2 {
  font-size: 1.9rem;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}

.section-heading p {
  color: var(--text-muted);
  margin: 0;
}

/* Cards grid */

.grid {
  display: grid;
  gap: 24px;
}

.grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

.card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card .icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(47, 111, 235, 0.1);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-bottom: 16px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

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

/* Stats */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stats .stat strong {
  display: block;
  font-size: 2rem;
  color: var(--text);
}

.stats .stat span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Timeline (about page) */

.timeline {
  border-left: 2px solid var(--border);
  margin-left: 8px;
  padding-left: 28px;
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.timeline-item time {
  display: block;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline-item h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.timeline-item p {
  margin: 0;
  color: var(--text-muted);
}

/* Team */

.team-member {
  text-align: left;
}

.team-member .avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--border);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.team-member h3 {
  margin: 0 0 2px;
  font-size: 1.05rem;
}

.team-member .role {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 10px;
}

/* Pricing (services page) */

.plan {
  display: flex;
  flex-direction: column;
}

.plan .price {
  font-size: 2rem;
  font-weight: 700;
  margin: 8px 0 4px;
}

.plan .price span {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

.plan ul {
  list-style: none;
  padding: 0;
  margin: 20px 0 24px;
  flex-grow: 1;
}

.plan ul li {
  padding: 8px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.92rem;
}

.plan ul li:first-child {
  border-top: none;
}

.plan.featured {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

/* Contact form */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

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

.info-list li {
  padding: 14px 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
}

.info-list li:first-child {
  border-top: none;
}

.info-list strong {
  display: block;
  color: var(--text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

form.contact-form {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.form-row {
  margin-bottom: 18px;
}

.form-row label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--bg);
  color: var(--text);
}

.form-row textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 14px;
}

/* FAQ */

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.faq-item p {
  margin: 0;
  color: var(--text-muted);
}

/* Footer */

footer.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

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

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

.footer-grid ul li {
  margin-bottom: 8px;
}

.footer-grid ul a {
  color: var(--text);
  font-size: 0.92rem;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Page header (inner pages) */

.page-header {
  padding: 56px 0 40px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.page-header .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 10px;
}

.page-header h1 {
  font-size: 2.1rem;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.page-header p {
  color: var(--text-muted);
  max-width: 60ch;
  margin: 0;
}

/* Responsive */

@media (max-width: 860px) {
  .hero .container {
    grid-template-columns: 1fr;
  }

  .grid.cols-3,
  .grid.cols-2,
  .footer-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .nav-toggle {
    display: block;
  }

  nav.main-nav {
    display: none;
    width: 100%;
    order: 3;
  }

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

  nav.main-nav ul {
    flex-direction: column;
    gap: 4px;
    padding: 12px 0 18px;
  }

  nav.main-nav a {
    display: block;
    padding: 10px 0;
  }

  .site-header .container {
    flex-wrap: wrap;
    height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero {
    padding: 56px 0 48px;
  }

  section {
    padding: 52px 0;
  }
}