*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #f7f8fa;
  --color-bg-alt: #ffffff;
  --color-text: #2c2c2c;
  --color-text-muted: #6b7280;
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-border: #e5e7eb;
  --color-surface: #ffffff;
  --color-footer-bg: #1f2937;
  --color-footer-text: #d1d5db;
  --color-accent: #059669;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --radius: 8px;
  --max-width: 1200px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

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

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  object-fit: contain;
  background: var(--color-primary-light);
  padding: 4px;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}

nav a:hover,
nav a.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

.hamburger i {
  font-size: 1.5rem;
}

main {
  flex: 1;
}

.hero {
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
  color: #fff;
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 32px;
  opacity: 0.9;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--color-primary);
  padding: 14px 32px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--color-primary-dark);
}

.section {
  padding: 80px 0;
}

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

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 48px;
}

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

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tip-card {
  display: flex;
  gap: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}

.tip-card .tip-num {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
}

.tip-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.tip-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.cta-banner {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: #fff;
  text-align: center;
  padding: 60px 0;
}

.cta-banner h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: 28px;
}

.cta-banner .hero-cta {
  background: #fff;
  color: var(--color-accent);
}

.page-header {
  background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
  color: #fff;
  padding: 48px 0;
  text-align: center;
}

.page-header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.page-header p {
  opacity: 0.85;
}

.content-section {
  padding: 60px 0;
}

.content-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 48px;
  max-width: 900px;
  margin: 0 auto;
}

.content-card h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 32px 0 12px;
}

.content-card h2:first-child {
  margin-top: 0;
}

.content-card p,
.content-card li {
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.7;
}

.content-card ul,
.content-card ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.content-card a {
  color: var(--color-primary);
}

.about-team {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.about-value {
  text-align: center;
  padding: 24px;
}

.about-value i {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  display: block;
}

.about-value h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.about-value p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.about-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 32px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
}

.contact-info-item i {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-top: 3px;
}

.contact-info-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.contact-info-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background: var(--color-bg);
  transition: border-color 0.2s;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

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

footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 8px;
  line-height: 1.6;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--color-footer-text);
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-footer-bg);
  color: #fff;
  padding: 20px;
  z-index: 1000;
  display: none;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
}

.cookie-banner.show {
  display: block;
}

.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cookie-inner p {
  font-size: 0.9rem;
  flex: 1;
}

.cookie-inner p a {
  color: #93c5fd;
}

.cookie-btns {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.cookie-btns button {
  padding: 10px 24px;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s;
}

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

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

.btn-decline {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

.btn-decline:hover {
  background: rgba(255,255,255,0.25);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }
  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  nav.open {
    display: flex;
  }
  nav a {
    width: 100%;
    text-align: center;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .hero {
    padding: 48px 0;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .tips-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .about-team {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .cookie-inner {
    flex-direction: column;
    text-align: center;
  }
  .content-card {
    padding: 24px;
  }
  .stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  .stat-num {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 12px 16px;
  }
  .container {
    padding: 0 16px;
  }
  .section {
    padding: 48px 0;
  }
  .stats-row {
    grid-template-columns: 1fr;
  }
}