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

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

:root {
  --canvas: #f5f1ec;
  --surface-1: #ffffff;
  --surface-2: #ede9e3;
  --ink: #111111;
  --ink-muted: #626260;
  --ink-subtle: #7b7b78;
  --hairline: #d3cec6;
  --hairline-soft: #e4e0da;
  --inverse-canvas: #000000;
  --inverse-ink: #ffffff;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-xxl: 24px;
  --spacing-xxs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-section: 96px;
  --max-width: 1280px;
  --font: 'Inter', ui-sans-serif, system-ui, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

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

/* ── NAV ── */
.site-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 56px;
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.3px;
}
.nav-logo span { color: var(--ink-muted); font-weight: 400; }
.nav-links {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-links a.active { color: var(--ink); font-weight: 500; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--ink);
}
.nav-toggle svg { display: block; }

/* ── HERO ── */
.hero {
  padding: var(--spacing-section) 0;
  background: var(--canvas);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-section);
  align-items: center;
}
.hero-eyebrow {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-muted);
  margin-bottom: var(--spacing-md);
}
.hero-title {
  font-size: 56px;
  font-weight: 500;
  line-height: 1.10;
  letter-spacing: -1.4px;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}
.hero-desc {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--ink-muted);
  margin-bottom: 0;
}
.hero-image-card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
}
.hero-image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── SECTION TITLES ── */
.section { padding: var(--spacing-section) 0; }
.section-eyebrow {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-muted);
  margin-bottom: var(--spacing-sm);
}
.section-title {
  font-size: 40px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.8px;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}
.section-subtitle {
  font-size: 18px;
  font-weight: 400;
  color: var(--ink-muted);
  max-width: 640px;
  margin-bottom: var(--spacing-xxl);
}
.section-divider {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: var(--spacing-section) 0;
}

/* ── ARTICLE CARDS ── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.article-card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
.article-card:hover { border-color: #bbb8b0; }
.article-card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--surface-2);
}
.article-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.article-card:hover .article-card-img img { transform: scale(1.03); }
.article-card-body {
  padding: var(--spacing-lg);
}
.article-meta {
  font-size: 12px;
  color: var(--ink-subtle);
  margin-bottom: var(--spacing-xs);
  display: flex;
  gap: var(--spacing-xs);
}
.article-meta span::after { content: '·'; margin-left: var(--spacing-xs); }
.article-meta span:last-child::after { content: ''; }
.article-card-title {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}
.article-card-excerpt {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.5;
}
.article-card-link {
  display: block;
  color: inherit;
}
.article-card-link:hover { text-decoration: none; }

/* ── INFO STRIP ── */
.info-strip {
  background: var(--inverse-canvas);
  padding: var(--spacing-section) 0;
}
.info-strip .section-title,
.info-strip .section-subtitle,
.info-strip .section-eyebrow { color: var(--inverse-ink); }
.info-strip .section-subtitle { color: rgba(255,255,255,0.65); }
.info-strip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}
.info-strip-item {
  padding: var(--spacing-lg);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
}
.info-strip-item-title {
  font-size: 22px;
  font-weight: 500;
  color: var(--inverse-ink);
  margin-bottom: var(--spacing-sm);
}
.info-strip-item-text {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.5;
}

/* ── FEATURE CARDS ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}
.feature-card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}
.feature-card-title {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}
.feature-card-text {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.5;
}

/* ── ARTICLE PAGE ── */
.article-hero {
  padding: var(--spacing-section) 0 var(--spacing-xxl);
}
.article-header-meta {
  font-size: 13px;
  color: var(--ink-subtle);
  margin-bottom: var(--spacing-md);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.article-header-meta span::after { content: '·'; margin-left: 8px; }
.article-header-meta span:last-child::after { content: ''; }
.article-title {
  font-size: 48px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -1.2px;
  color: var(--ink);
  max-width: 800px;
  margin-bottom: var(--spacing-lg);
}
.article-intro {
  font-size: 20px;
  color: var(--ink-muted);
  max-width: 680px;
  line-height: 1.5;
}
.article-img-card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin: var(--spacing-xxl) 0;
  max-height: 440px;
}
.article-img-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: 440px;
}
.article-body { max-width: 760px; }
.article-body h2 {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--ink);
  margin: var(--spacing-xxl) 0 var(--spacing-md);
  line-height: 1.2;
}
.article-body h3 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}
.article-body p {
  font-size: 16px;
  color: var(--ink);
  line-height: 1.65;
  margin-bottom: var(--spacing-lg);
}
.article-body ul, .article-body ol {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-lg);
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li {
  font-size: 16px;
  color: var(--ink);
  line-height: 1.65;
  margin-bottom: var(--spacing-xs);
}
.article-body a { color: var(--ink); text-decoration: underline; }
.article-body a:hover { color: var(--ink-muted); }

.article-callout {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--ink);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}
.article-callout p { margin: 0; font-size: 15px; color: var(--ink-muted); }

.article-table-wrap { overflow-x: auto; margin: var(--spacing-xl) 0; }
.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.article-table th {
  background: var(--surface-2);
  color: var(--ink);
  font-weight: 500;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}
.article-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--ink-muted);
  vertical-align: top;
}
.article-table tr:last-child td { border-bottom: none; }

.article-refs {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--hairline);
}
.article-refs h3 {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-subtle);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.article-refs ul { list-style: none; padding: 0; }
.article-refs li {
  font-size: 13px;
  color: var(--ink-subtle);
  margin-bottom: var(--spacing-xs);
}
.article-refs a { color: var(--ink-subtle); text-decoration: underline; }

.related-articles { padding: var(--spacing-section) 0; }

/* ── CONTACT FORM ── */
.contact-section { padding: var(--spacing-section) 0; }
.contact-card {
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xxl) 40px;
  max-width: 640px;
}
.contact-title {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}
.contact-desc {
  font-size: 16px;
  color: var(--ink-muted);
  margin-bottom: var(--spacing-xl);
}
.form-field { margin-bottom: var(--spacing-lg); }
.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-xs);
}
.form-field input,
.form-field textarea {
  width: 100%;
  background: var(--surface-1);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-family: var(--font);
  font-size: 16px;
  color: var(--ink);
  transition: border-color 0.15s;
  min-height: 44px;
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--ink-muted);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field .field-error {
  font-size: 13px;
  color: #c0392b;
  margin-top: 4px;
  display: none;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s;
  min-height: 40px;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary {
  background: var(--ink);
  color: var(--inverse-ink);
}
.btn-primary:hover:not(:disabled) { opacity: 0.85; }
.form-message {
  display: none;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-top: var(--spacing-md);
}
.form-message.success {
  background: #f0faf0;
  border: 1px solid #b2ddb2;
  color: #2a6b2a;
}
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── FAQ ── */
.faq-list { max-width: 760px; }
.faq-item {
  background: var(--canvas);
  border-radius: var(--radius-md);
  border-bottom: 1px solid var(--hairline-soft);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  gap: var(--spacing-md);
}
.faq-question svg {
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-item.open .faq-question svg { transform: rotate(180deg); }
.faq-answer {
  display: none;
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  font-size: 15px;
  color: var(--ink-muted);
  line-height: 1.6;
}
.faq-item.open .faq-answer { display: block; }

/* ── PAGE HEADER ── */
.page-header {
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
  border-bottom: 1px solid var(--hairline);
}
.page-header-title {
  font-size: 40px;
  font-weight: 500;
  letter-spacing: -0.8px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}
.page-header-meta {
  font-size: 14px;
  color: var(--ink-subtle);
}
.page-content {
  padding: var(--spacing-section) 0;
  max-width: 760px;
}
.page-content h2 {
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}
.page-content p {
  font-size: 15px;
  color: var(--ink-muted);
  line-height: 1.65;
  margin-bottom: var(--spacing-md);
}
.page-content ul {
  list-style: disc;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}
.page-content li {
  font-size: 15px;
  color: var(--ink-muted);
  line-height: 1.65;
  margin-bottom: 4px;
}

/* ── ABOUT ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-section);
  padding: var(--spacing-section) 0;
  align-items: start;
}
.about-grid .feature-card { height: 100%; }

/* ── FOOTER ── */
.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px var(--spacing-xl);
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xxl);
}
.footer-brand-name {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}
.footer-brand-desc {
  font-size: 13px;
  color: var(--ink-subtle);
  line-height: 1.5;
  max-width: 260px;
}
.footer-col-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: var(--spacing-md);
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: var(--spacing-xs); }
.footer-col a {
  font-size: 13px;
  color: var(--ink-subtle);
  transition: color 0.15s;
}
.footer-col a:hover { color: var(--ink); text-decoration: none; }
.footer-bottom {
  max-width: var(--max-width);
  margin: var(--spacing-xl) auto 0;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--hairline-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}
.footer-bottom-text {
  font-size: 12px;
  color: var(--ink-subtle);
}

/* ── COOKIE BANNER ── */
#cookie-banner {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  background: var(--inverse-canvas);
  color: var(--inverse-ink);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  justify-content: space-between;
  z-index: 999;
  width: min(680px, calc(100vw - 32px));
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}
#cookie-banner p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.5;
}
#cookie-banner a { color: #fff; text-decoration: underline; }
.cookie-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}
.btn-cookie-accept {
  background: var(--inverse-ink);
  color: var(--ink);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-cookie-reject {
  background: transparent;
  color: rgba(255,255,255,0.65);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  white-space: nowrap;
}
.btn-cookie-accept:hover { opacity: 0.9; }
.btn-cookie-reject:hover { color: #fff; border-color: rgba(255,255,255,0.4); }

/* ── BREADCRUMB ── */
.breadcrumb {
  padding: var(--spacing-md) 0 0;
  font-size: 13px;
  color: var(--ink-subtle);
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--ink-subtle); }
.breadcrumb a:hover { color: var(--ink); text-decoration: none; }
.breadcrumb-sep { color: var(--hairline); }

/* ── DISCLAIMER ── */
.disclaimer-bar {
  background: var(--surface-2);
  border-top: 1px solid var(--hairline);
  padding: var(--spacing-md) 0;
}
.disclaimer-bar .container {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}
.disclaimer-bar p {
  font-size: 12px;
  color: var(--ink-subtle);
  line-height: 1.5;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .info-strip-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .about-grid { gap: var(--spacing-xxl); }
}

@media (max-width: 768px) {
  :root { --spacing-section: 64px; }
  .container { padding: 0 var(--spacing-lg); }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: var(--spacing-md) var(--spacing-lg); gap: var(--spacing-md); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .site-nav .container { position: relative; }
  .hero-inner { grid-template-columns: 1fr; gap: var(--spacing-xl); }
  .hero-title { font-size: 36px; letter-spacing: -0.8px; }
  .section-title { font-size: 28px; }
  .article-title { font-size: 32px; }
  .articles-grid { grid-template-columns: 1fr; }
  .info-strip-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: var(--spacing-xl); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .about-grid { grid-template-columns: 1fr; }
  #cookie-banner { flex-direction: column; align-items: flex-start; }
  .contact-card { padding: var(--spacing-xl) var(--spacing-lg); }
  .page-header-title { font-size: 28px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 28px; }
  .article-title { font-size: 26px; letter-spacing: -0.5px; }
  .section-title { font-size: 24px; }
}