@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;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --success: #1f8a65;
  --error: #cf2d56;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-base: 16px;
  --spacing-md: 20px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 80px;
}

html { scroll-behavior: smooth; }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

h1, h2, h3 {
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 400;
  color: var(--ink);
  line-height: 1.2;
}

h1 { font-size: 56px; letter-spacing: -1.5px; line-height: 1.1; }
h2 { font-size: 36px; letter-spacing: -0.72px; }
h3 { font-size: 26px; letter-spacing: -0.325px; }

p { color: var(--body); line-height: 1.6; }

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

code, pre { font-family: 'JetBrains Mono', monospace; font-size: 13px; }

/* 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 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.5px;
  text-decoration: none;
}

.nav-brand span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  line-height: 1.4;
  transition: color 0.15s;
}

.nav-links a:hover { color: var(--ink); }

.nav-actions { display: flex; align-items: center; gap: var(--spacing-sm); }

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  height: 40px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: background 0.15s;
  line-height: 1;
}

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

.btn-secondary {
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  height: 40px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  transition: border-color 0.15s;
  line-height: 1;
}

.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

/* HAMBURGER */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  flex-direction: column;
  gap: 5px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.2s;
}

/* HERO BAND */
.hero-band {
  background: var(--canvas);
  padding: var(--spacing-section) 0 var(--spacing-section);
  border-bottom: 1px solid var(--hairline);
}

.hero-band .container { text-align: center; }

.hero-label {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: var(--spacing-lg);
}

.hero-band h1 {
  max-width: 780px;
  margin: 0 auto var(--spacing-lg);
}

.hero-band .lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto var(--spacing-xxl);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* SECTIONS */
.section {
  padding: var(--spacing-section) 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.section:last-of-type { border-bottom: none; }

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--spacing-md);
}

.section-head {
  font-size: 36px;
  letter-spacing: -0.72px;
  color: var(--ink);
  font-weight: 400;
  margin-bottom: var(--spacing-base);
  max-width: 600px;
}

.section-sub {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  margin-bottom: var(--spacing-xxl);
  line-height: 1.6;
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.cards-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  transition: border-color 0.15s;
}

.feature-card:hover { border-color: var(--hairline-strong); }

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0;
  margin-bottom: var(--spacing-xs);
}

.feature-card p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}

.feature-card .card-tag {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: var(--spacing-sm);
}

/* ARTICLE CARD */
.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  transition: border-color 0.15s;
  text-decoration: none;
  display: block;
}

.article-card:hover { border-color: var(--hairline-strong); }

.article-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.article-card-body {
  padding: var(--spacing-lg);
}

.article-card-tag {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
  margin-bottom: var(--spacing-sm);
}

.article-card h3 {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
  line-height: 1.3;
}

.article-card p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}

.article-card-meta {
  font-size: 13px;
  color: var(--muted-soft);
  margin-top: var(--spacing-sm);
}

/* ARTICLE PAGE */
.article-hero {
  padding: var(--spacing-xxl) 0 0;
  background: var(--canvas);
}

.article-content {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--spacing-xxl) var(--spacing-xl);
}

.article-content h1 {
  font-size: 42px;
  letter-spacing: -1px;
  margin-bottom: var(--spacing-base);
}

.article-content h2 {
  font-size: 26px;
  letter-spacing: -0.325px;
  margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.article-content h3 {
  font-size: 20px;
  letter-spacing: 0;
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.article-content p {
  margin-bottom: var(--spacing-base);
  font-size: 16px;
  line-height: 1.7;
}

.article-content ul, .article-content ol {
  margin: var(--spacing-base) 0 var(--spacing-base) var(--spacing-xl);
  color: var(--body);
  line-height: 1.7;
  font-size: 16px;
}

.article-content li { margin-bottom: var(--spacing-xs); }

.article-meta {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xxl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--hairline);
  font-size: 14px;
  color: var(--muted);
}

.article-img-full {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  margin-bottom: var(--spacing-xxl);
  border: 1px solid var(--hairline);
}

.article-img-caption {
  font-size: 13px;
  color: var(--muted-soft);
  text-align: center;
  margin-top: calc(-1 * var(--spacing-xl));
  margin-bottom: var(--spacing-xxl);
}

blockquote {
  border-left: 3px solid var(--primary);
  padding: var(--spacing-base) var(--spacing-lg);
  margin: var(--spacing-xxl) 0;
  background: var(--surface-card);
  border-radius: 0 var(--rounded-md) var(--rounded-md) 0;
}

blockquote p { color: var(--ink); font-size: 18px; margin-bottom: 0; }

.infobox {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-xxl) 0;
}

.infobox h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.infobox ul { margin-left: var(--spacing-base); }

/* CONTACT FORM */
.contact-section {
  background: var(--canvas);
  padding: var(--spacing-section) 0;
}

.contact-form-wrap {
  max-width: 560px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface-card);
  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);
}

.form-message {
  display: none;
  padding: var(--spacing-base);
  border-radius: var(--rounded-md);
  font-size: 14px;
  margin-top: var(--spacing-base);
}

.form-message.success {
  background: #d4edda;
  color: var(--success);
  border: 1px solid #c3e6cb;
}

/* FOOTER */
.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 1fr;
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xxl);
}

.footer-brand p {
  font-size: 14px;
  color: var(--body);
  margin-top: var(--spacing-sm);
  max-width: 260px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--spacing-base);
}

.footer-col ul { list-style: none; }

.footer-col ul li { margin-bottom: var(--spacing-xs); }

.footer-col ul li a {
  font-size: 14px;
  color: var(--body);
  text-decoration: none;
  transition: color 0.15s;
}

.footer-col ul li a:hover { color: var(--ink); }

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-base);
}

.footer-bottom p { font-size: 14px; color: var(--muted); }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: var(--spacing-lg) var(--spacing-xl);
  z-index: 999;
  display: none;
}

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

.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.cookie-inner p { font-size: 14px; color: var(--canvas-soft); line-height: 1.5; }
.cookie-inner a { color: var(--canvas); text-decoration: underline; }

.cookie-actions { display: flex; gap: var(--spacing-xs); flex-shrink: 0; }

.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--rounded-md);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.btn-cookie-reject {
  background: transparent;
  color: var(--canvas-soft);
  border: 1px solid var(--muted);
  border-radius: var(--rounded-md);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

/* PAGE HEADER */
.page-header {
  background: var(--canvas);
  padding: var(--spacing-section) 0 var(--spacing-xxl);
  border-bottom: 1px solid var(--hairline);
}

.page-header h1 {
  font-size: 42px;
  letter-spacing: -1px;
  margin-bottom: var(--spacing-base);
}

.page-header p {
  font-size: 18px;
  color: var(--muted);
  max-width: 540px;
}

.page-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-section) var(--spacing-xl);
}

.page-content h2 {
  font-size: 26px;
  margin: var(--spacing-xxl) 0 var(--spacing-base);
  letter-spacing: -0.325px;
}

.page-content p {
  margin-bottom: var(--spacing-base);
  line-height: 1.7;
  font-size: 16px;
}

.page-content ul {
  margin: var(--spacing-base) 0 var(--spacing-base) var(--spacing-xl);
  line-height: 1.7;
}

.page-content li { margin-bottom: var(--spacing-xs); }

/* BREADCRUMBS */
.breadcrumbs {
  font-size: 13px;
  color: var(--muted-soft);
  margin-bottom: var(--spacing-base);
}

.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--ink); }
.breadcrumbs span { margin: 0 var(--spacing-xxs); }

/* SCHEMA TABLE */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
  font-size: 15px;
}

.data-table th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  padding: var(--spacing-sm) var(--spacing-base);
  border-bottom: 2px solid var(--hairline);
}

.data-table td {
  padding: var(--spacing-sm) var(--spacing-base);
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
}

/* RELATED ARTICLES */
.related-section {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: var(--spacing-section) 0;
}

/* INTRO SECTION */
.intro-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

.intro-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: var(--rounded-lg);
  border: 1px solid var(--hairline);
}

/* LOADING SPINNER */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--on-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: var(--spacing-xs);
}

@keyframes spin { to { transform: rotate(360deg); } }

/* RESPONSIVE */
@media (max-width: 1024px) {
  h1 { font-size: 48px; }
  .hero-band h1 { font-size: 48px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .intro-section { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .nav-hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: var(--spacing-lg) var(--spacing-xl);
    gap: var(--spacing-base);
  }
  .nav-links.open + .nav-actions { display: flex; }
  h1 { font-size: 36px; letter-spacing: -0.5px; }
  .hero-band h1 { font-size: 36px; }
  .hero-band .lead { font-size: 16px; }
  .section-head { font-size: 28px; }
  .cards-grid { grid-template-columns: 1fr; }
  .cards-grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .container { padding: 0 var(--spacing-base); }
  .article-content { padding: var(--spacing-xl) var(--spacing-base); }
  .article-content h1 { font-size: 30px; }
  .article-img-full { height: 220px; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}