:root {
  --color-bg: #f5fafc;
  --color-bg-alt: #ffffff;
  --color-primary: #1e7bbf;
  --color-primary-soft: #e1f1fb;
  --color-accent: #3aa98a;
  --color-text: #1f2933;
  --color-muted: #6b7280;
  --color-border: #d1d5db;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.07);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}

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

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

a:hover,
a:focus {
  text-decoration: underline;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

.narrow {
  width: min(760px, 100%);
  margin-inline: auto;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.4fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.section-aside {
  padding: 1.5rem 1.75rem;
  background: var(--color-bg-alt);
  border-radius: 1.25rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.7fr);
  gap: 2.5rem;
  align-items: flex-start;
}

@media (max-width: 900px) {
  .two-column,
  .section-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 250, 252, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

.inner-header {
  background: rgba(255, 255, 255, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.6rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  object-fit: cover;
  background: radial-gradient(circle at 30% 30%, #ffffff 0, #e0f2ff 45%, #1e7bbf 100%);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: #0f172a;
}

.logo-subtitle {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-size: 0.93rem;
  color: var(--color-muted);
  padding-block: 0.4rem;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a:focus {
  color: #0f172a;
  border-bottom-color: var(--color-primary-soft);
  text-decoration: none;
}

.main-nav a.is-active {
  color: #0f172a;
  border-bottom-color: var(--color-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0.25rem;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #111827;
  border-radius: 999px;
}

.nav-toggle-bar + .nav-toggle-bar {
  margin-top: 4px;
}

@media (max-width: 820px) {
  .main-nav ul {
    position: absolute;
    inset-inline: 0.75rem;
    top: 3.5rem;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.75rem 0.9rem 0.9rem;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 1rem;
    border: 1px solid rgba(148, 163, 184, 0.4);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-4px);
    transition: max-height 0.22s ease, opacity 0.18s ease, transform 0.2s ease;
  }

  .main-nav ul.is-open {
    max-height: 320px;
    opacity: 1;
    transform: translateY(0);
  }

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

.hero {
  position: relative;
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
  background: radial-gradient(circle at top left, #e0f2fe 0, #f5fafc 40%, #ffffff 100%);
}

.hero-inner {
  background: radial-gradient(circle at top right, #dbeafe 0, #f9fafb 45%, #ffffff 100%);
}

.hero-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  filter: saturate(1.1) contrast(1.02);
}

.hero-content {
  padding-block: 2rem 2.4rem;
}

.hero h1 {
  font-size: clamp(1.9rem, 2.8vw, 2.4rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  color: #0f172a;
}

.lead {
  font-size: 1.02rem;
  color: var(--color-muted);
  max-width: 44rem;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease,
    transform 0.08s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #2563eb);
  color: #ffffff;
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, #155e9b, #1d4ed8);
  box-shadow: 0 18px 40px rgba(30, 64, 175, 0.38);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(148, 163, 184, 0.7);
  color: #0f172a;
}

.btn-outline:hover,
.btn-outline:focus {
  background: #e5f0ff;
  border-color: var(--color-primary);
  text-decoration: none;
}

.section {
  padding-block: 2.8rem;
}

.section-alt {
  background: #ffffff;
}

.section h2 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.section h3 {
  font-size: 1.05rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.section p {
  margin-top: 0.4rem;
  margin-bottom: 0.7rem;
}

.section ul,
.section ol {
  margin: 0.4rem 0 0.9rem 1.2rem;
  padding: 0;
}

.tag-list {
  list-style: none;
  margin: 0.3rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-list li {
  font-size: 0.8rem;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #e0f2fe, #e0f7f2);
  color: #0f172a;
  border: 1px solid rgba(148, 163, 184, 0.5);
}

.checklist {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}

.checklist li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: 0.45rem;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0.05rem;
  font-size: 0.8rem;
  color: var(--color-accent);
}

.numbered-list {
  padding-left: 1.2rem;
}

blockquote {
  margin: 0.7rem 0 0.4rem;
  padding-left: 1.1rem;
  border-left: 3px solid var(--color-primary);
  color: #111827;
  font-style: italic;
}

.quote-attribution {
  font-size: 0.86rem;
  color: var(--color-muted);
  margin-top: 0.2rem;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  background: #0b1722;
  color: #e5e7eb;
  padding-block: 2.2rem 1.7rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 2.4fr) minmax(0, 2.6fr) minmax(0, 2.2fr);
  gap: 2rem;
  align-items: flex-start;
}

.footer-brand p {
  font-size: 0.9rem;
  color: #9ca3af;
}

.footer-logo-mark {
  display: inline-flex;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.65);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.footer-nav ul,
.footer-meta ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
}

.footer-nav a,
.footer-meta a {
  font-size: 0.88rem;
  color: #cbd5f5;
}

.footer-nav a:hover,
.footer-meta a:hover {
  color: #ffffff;
  text-decoration: none;
}

.footer-meta {
  text-align: right;
}

.copyright {
  font-size: 0.8rem;
  color: #6b7280;
  margin-top: 0.7rem;
}

@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-meta {
    text-align: left;
  }
}

.contact-form {
  padding: 1.7rem 1.9rem;
  background: #ffffff;
  border-radius: 1.25rem;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: var(--shadow-soft);
}

.contact-form h2,
.contact-form h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}

.contact-form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 0.8rem;
  margin-bottom: 0.25rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border);
  padding: 0.55rem 0.7rem;
  font: inherit;
  color: inherit;
  background: #f9fafb;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: 2px solid rgba(37, 99, 235, 0.35);
  outline-offset: 1px;
  border-color: rgba(37, 99, 235, 0.4);
  background: #ffffff;
}

.contact-form textarea {
  resize: vertical;
  min-height: 140px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 0.7rem;
}

@media (max-width: 640px) {
  .section {
    padding-block: 2.1rem;
  }

  .hero-media img {
    height: 220px;
  }

  .contact-form {
    padding: 1.2rem 1.25rem;
  }
}