@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --semantic-success: #1f8a65;
  --semantic-error: #cf2d56;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* TOP NAV */
.top-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.top-nav .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.2px;
  flex-shrink: 0;
}
.nav-brand span { color: var(--primary); }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  padding: 8px 12px;
  border-radius: var(--rounded-sm);
  transition: color 0.15s, background 0.15s;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--ink);
  background: var(--surface-strong);
}
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.2s;
}

/* HERO */
.hero {
  padding: 80px 0;
  background: var(--canvas);
}
.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-strong);
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 72px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -2.16px;
  color: var(--ink);
  max-width: 800px;
  margin-bottom: 20px;
}
.hero p {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.6;
}
.hero-image {
  margin-top: 48px;
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--surface-card);
  max-height: 480px;
}
.hero-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

/* SECTIONS */
section { padding: 80px 0; }
section + section { border-top: 1px solid var(--hairline-soft); }

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.section-title {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.6;
}

/* ARTICLE CARDS */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  transition: border-color 0.15s;
}
.article-card:hover { border-color: var(--hairline-strong); }
.article-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}
.article-card-body { padding: 24px; }
.article-card-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.article-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 10px;
}
.article-card-excerpt {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 20px;
}
.article-card-meta {
  font-size: 13px;
  color: var(--muted);
}
.article-read-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-strong);
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}
.article-read-link:hover { color: var(--primary); border-color: var(--primary); }

/* FEATURE CARDS */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.feature-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
}
.feature-card-icon {
  font-size: 24px;
  margin-bottom: 16px;
}
.feature-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}
.feature-card-text {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}

/* ARTICLE PAGE */
.article-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}
.article-header .breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.article-header .breadcrumb a { color: var(--muted); }
.article-header .breadcrumb a:hover { color: var(--ink); }
.article-header h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -1.2px;
  color: var(--ink);
  line-height: 1.15;
  max-width: 780px;
  margin-bottom: 20px;
}
.article-header .article-meta {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 16px;
}
.article-content {
  padding: 48px 0 80px;
  max-width: 780px;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  line-height: 1.25;
  margin: 40px 0 16px;
}
.article-content h3 {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.11px;
  color: var(--ink);
  line-height: 1.3;
  margin: 32px 0 12px;
}
.article-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 20px;
  letter-spacing: 0.08px;
}
.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}
.article-content li { margin-bottom: 8px; }
.article-content .article-image {
  margin: 32px 0;
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.article-content .article-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}
.article-content .image-caption {
  font-size: 13px;
  color: var(--muted);
  padding: 10px 16px;
  background: var(--surface-card);
}
.article-content .info-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
  margin: 32px 0;
}
.article-content .info-box h4 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.article-content .external-link {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-strong);
}
.article-content .external-link:hover { color: var(--primary); border-color: var(--primary); }
.article-content code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-xs);
  padding: 2px 6px;
  color: var(--ink);
}

/* FORM */
.contact-form {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 40px;
  max-width: 560px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
}
.form-group input, .form-group textarea {
  width: 100%;
  background: var(--canvas-soft);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  height: 44px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  transition: border-color 0.15s;
  outline: none;
}
.form-group textarea { height: 120px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--ink);
}
.form-group input::placeholder, .form-group textarea::placeholder {
  color: var(--muted-soft);
}
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.form-message {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--rounded-md);
  font-size: 14px;
  display: none;
}
.form-message.success {
  background: #e6f7f2;
  color: var(--semantic-success);
  border: 1px solid #b3e8d8;
  display: block;
}
.form-message.error {
  background: #fdeef1;
  color: var(--semantic-error);
  border: 1px solid #f5bdc6;
  display: block;
}

/* COOKIE BANNER */
#cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: 20px 24px;
  max-width: 560px;
  width: calc(100% - 48px);
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 9999;
  box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}
#cookie-banner p {
  font-size: 14px;
  color: var(--muted-soft);
  line-height: 1.5;
  flex: 1;
}
#cookie-banner p a { color: var(--canvas); border-bottom: 1px solid rgba(247,247,244,0.3); }
.cookie-buttons { display: flex; gap: 8px; flex-shrink: 0; }
.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject {
  background: transparent;
  color: var(--muted-soft);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--rounded-md);
  border: 1px solid rgba(247,247,244,0.2);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.btn-cookie-reject:hover { color: var(--canvas); border-color: rgba(247,247,244,0.4); }

/* FOOTER */
.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  margin-top: 12px;
  max-width: 260px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 14px;
  color: var(--body);
  transition: color 0.15s;
}
.footer-col ul a:hover { color: var(--ink); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--hairline-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
}
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }

/* PAGE HEADER */
.page-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}
.page-header h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -1.2px;
  color: var(--ink);
  line-height: 1.15;
  max-width: 680px;
  margin-bottom: 16px;
}
.page-header p {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.6;
}
.page-content {
  padding: 48px 0 80px;
  max-width: 780px;
}
.page-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  line-height: 1.25;
  margin: 36px 0 14px;
}
.page-content h3 {
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
  margin: 28px 0 10px;
}
.page-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 18px;
  letter-spacing: 0.08px;
}
.page-content ul, .page-content ol {
  margin: 0 0 18px 24px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}
.page-content li { margin-bottom: 8px; }
.page-content a { color: var(--ink); border-bottom: 1px solid var(--hairline-strong); }
.page-content a:hover { color: var(--primary); border-color: var(--primary); }

/* ABOUT TEAM */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 32px 0;
}
.about-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
}
.about-card h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.about-card p { font-size: 14px; color: var(--body); line-height: 1.6; margin: 0; }

/* RELATED ARTICLES */
.related-articles { margin-top: 64px; padding-top: 48px; border-top: 1px solid var(--hairline); }
.related-articles h3 { font-size: 22px; font-weight: 400; color: var(--ink); margin-bottom: 24px; }
.related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.related-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 20px;
  transition: border-color 0.15s;
}
.related-card:hover { border-color: var(--hairline-strong); }
.related-card-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.related-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero h1 { font-size: 56px; letter-spacing: -1.5px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav-menu { display: none; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px;
    gap: 4px;
  }
  .nav-hamburger { display: flex; }
  .top-nav { position: relative; }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 36px; letter-spacing: -0.8px; }
  section { padding: 48px 0; }
  .section-title { font-size: 28px; }
  .articles-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .article-header h1 { font-size: 32px; }
  .page-header h1 { font-size: 32px; }
  .about-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  #cookie-banner { flex-direction: column; align-items: flex-start; }
  .contact-form { padding: 24px; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; letter-spacing: -0.6px; }
  .article-header h1 { font-size: 28px; }
}