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

:root {
  --color-primary: #1a365d;
  --color-secondary: #2c5282;
  --color-accent: #3182ce;
  --color-text: #1a202c;
  --color-text-light: #4a5568;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-border: #e2e8f0;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

h1, h2, h3, h4 {
  color: var(--color-primary);
  line-height: 1.3;
  margin-top: 0;
}

h1 {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo:hover {
  color: var(--color-secondary);
}

nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

nav a {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.5rem 0;
}

nav a:hover,
nav a.active {
  color: var(--color-accent);
}

main {
  min-height: calc(100vh - 200px);
}

.hero {
  background-color: var(--color-bg-alt);
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.section {
  padding: 4rem 0;
}

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

.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: 1fr;
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

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

.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 1.5rem;
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card h3 {
  color: var(--color-secondary);
}

.btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-bg);
  padding: 0.75rem 1.5rem;
  border-radius: 0.375rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.btn:hover {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.image-container {
  border-radius: 0.5rem;
  overflow: hidden;
}

.image-container img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.content-with-image {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .content-with-image {
    grid-template-columns: 1fr 1fr;
  }

  .content-with-image.reverse {
    direction: rtl;
  }

  .content-with-image.reverse > * {
    direction: ltr;
  }
}

footer {
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 2rem 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

@media (min-width: 768px) {
  .footer-links {
    justify-content: flex-end;
  }
}

footer a {
  color: var(--color-bg);
  opacity: 0.9;
}

footer a:hover {
  opacity: 1;
  color: var(--color-bg);
}

.footer-copy {
  opacity: 0.8;
  font-size: 0.875rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  font-weight: 500;
  color: var(--color-text);
}

input,
textarea {
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-info {
  background-color: var(--color-bg-alt);
  padding: 1.5rem;
  border-radius: 0.5rem;
}

.contact-info p {
  margin-bottom: 0.75rem;
}

.contact-info p:last-child {
  margin-bottom: 0;
}

.notice {
  background-color: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  padding: 1rem 1.5rem;
  margin-top: 3rem;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.legal-content {
  max-width: 800px;
}

.legal-content h2 {
  margin-top: 2rem;
}

.legal-content h2:first-of-type {
  margin-top: 0;
}

@media (max-width: 767px) {
  .header-inner {
    flex-direction: column;
    gap: 1rem;
  }

  nav ul {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 2.5rem 0;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 360px) {
  html {
    font-size: 14px;
  }

  .container {
    padding: 0 1rem;
  }

  nav ul {
    gap: 0.75rem;
  }
}