/* === RESET & BASE === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-bg: #f8f7f4;
  --color-bg-alt: #efeee9;
  --color-text: #1a1a1a;
  --color-text-light: #555;
  --color-primary: #0d6e3f;
  --color-primary-light: #e8f5ee;
  --color-primary-dark: #094d2c;
  --color-accent: #e8a817;
  --color-border: #ddd;
  --color-white: #fff;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
  --container: 1140px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); }

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

/* === HEADER === */
.site-header {
  background: var(--color-white);
  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;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo-icon {
  font-size: 1.5rem;
}

.main-nav {
  display: flex;
  gap: 28px;
}

.main-nav a {
  color: var(--color-text-light);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-toggle { display: none; }

/* === HERO === */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 50%);
}

.hero-content { max-width: 640px; }

.hero-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.stat-card {
  background: var(--color-white);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 4px;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* === SECTIONS === */
.section { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
}

/* === CONTENT BLOCKS === */
.content-block { max-width: 780px; margin: 0 auto; }

.content-block h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.3;
}

.content-block h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 32px 0 12px;
  color: var(--color-primary-dark);
}

.content-block p {
  margin-bottom: 16px;
  color: var(--color-text-light);
  font-size: 1.02rem;
}

/* === FEATURES GRID === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-white);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.3s;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.feature-icon { font-size: 2rem; margin-bottom: 16px; }

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.feature-link {
  font-weight: 600;
  font-size: 0.9rem;
}

/* === FAQ === */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--color-primary);
  font-weight: 300;
}

.faq-item[open] summary::after { content: '−'; }

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item p {
  padding: 0 24px 20px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* === CTA === */
.cta-section {
  background: var(--color-primary);
  color: var(--color-white);
}

.cta-block {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.cta-block h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--color-white);
}

.cta-block p {
  opacity: 0.9;
  margin-bottom: 32px;
  font-size: 1.05rem;
}

.cta-section .btn-primary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.cta-section .btn-primary:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* === FOOTER === */
.site-footer {
  background: #1a1a1a;
  color: #bbb;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-about .logo {
  color: var(--color-white);
  margin-bottom: 16px;
}

.footer-about p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer-links h4 {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  color: #999;
  font-size: 0.9rem;
  padding: 4px 0;
}

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

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 24px;
  font-size: 0.82rem;
  color: #777;
}

/* === ARTICLE PAGE STYLES === */
.article-header {
  padding: 60px 0 40px;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 50%);
}

.article-header h1 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  max-width: 780px;
  margin: 0 auto 12px;
  line-height: 1.3;
}

.article-meta {
  max-width: 780px;
  margin: 0 auto;
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.article-body {
  padding: 48px 0 80px;
}

.article-body .content-block p,
.article-body .content-block li {
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-body .content-block ul,
.article-body .content-block ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-body .content-block li {
  margin-bottom: 8px;
  color: var(--color-text-light);
}

/* === CONTACT FORM === */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--color-white);
  transition: border-color 0.2s;
}

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

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

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--color-white);
    padding: 20px 24px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
  }
  .hero h1 { font-size: 2rem; }
  .hero-stats { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-actions { flex-direction: column; }
}