@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;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --success: #1f8a65;
  --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: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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;
}

.site-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.11px;
  flex-shrink: 0;
}

.nav-logo:hover { color: var(--primary); }

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  padding: 6px 12px;
  border-radius: var(--rounded-sm);
  transition: color 0.15s, background 0.15s;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--ink);
  cursor: pointer;
  padding: 8px;
}

.hero-band {
  padding: 80px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-band h1 {
  font-size: 56px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--ink);
  max-width: 720px;
  margin-bottom: 20px;
}

.hero-band .hero-sub {
  font-size: 18px;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 32px;
  line-height: 1.6;
}

.badge-pill {
  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: 20px;
}

.section { padding: 80px 0; }
.section-alt { background: var(--surface-card); }

.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-sub {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.5;
  margin-bottom: 48px;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.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: 10px;
}

.article-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 10px;
}

.article-card-title a { color: inherit; }
.article-card-title a:hover { color: var(--primary); }

.article-card-excerpt {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 16px;
}

.article-card-meta {
  font-size: 13px;
  color: var(--muted);
}

.btn-primary {
  display: inline-block;
  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;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  transition: background 0.15s;
  text-decoration: none;
}

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

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

.btn-secondary:hover { background: var(--surface-strong); color: var(--ink); }

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.5;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.article-main h1 {
  font-size: 42px;
  font-weight: 400;
  letter-spacing: -1px;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 16px;
}

.article-main h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  line-height: 1.25;
  margin: 40px 0 16px;
}

.article-main h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}

.article-main p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 20px;
}

.article-main ul, .article-main ol {
  padding-left: 24px;
  margin-bottom: 20px;
  color: var(--body);
  line-height: 1.7;
}

.article-main li { margin-bottom: 6px; }

.article-main a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.article-main a:hover { color: var(--primary-active); }

.article-meta {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
}

.article-img {
  width: 100%;
  border-radius: var(--rounded-lg);
  margin: 32px 0;
  border: 1px solid var(--hairline);
}

.article-img-caption {
  font-size: 13px;
  color: var(--muted);
  margin-top: -24px;
  margin-bottom: 32px;
}

.info-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--rounded-md);
  padding: 20px 24px;
  margin: 28px 0;
}

.info-box p { margin: 0; color: var(--body); font-size: 15px; }

.sidebar { position: sticky; top: 80px; align-self: start; }

.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-card h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.sidebar-card ul {
  list-style: none;
  padding: 0;
}

.sidebar-card li {
  border-bottom: 1px solid var(--hairline-soft);
  padding: 10px 0;
}

.sidebar-card li:last-child { border-bottom: none; }

.sidebar-card a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
}

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

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.data-table th {
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hairline-strong);
}

.data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
  vertical-align: top;
}

.data-table tr:last-child td { border-bottom: none; }

.data-table code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  background: var(--surface-strong);
  padding: 2px 6px;
  border-radius: var(--rounded-xs);
}

.page-layout {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.page-layout h1 {
  font-size: 42px;
  font-weight: 400;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 12px;
}

.page-layout .page-meta {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
}

.page-layout h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 16px;
}

.page-layout h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}

.page-layout p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 16px;
}

.page-layout ul, .page-layout ol {
  padding-left: 24px;
  margin-bottom: 16px;
  color: var(--body);
  line-height: 1.7;
}

.page-layout li { margin-bottom: 6px; }

.page-layout a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }

.contact-form {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 32px;
  margin-top: 32px;
}

.contact-form h3 {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin-bottom: 24px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--body-strong);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  font-family: inherit;
  font-size: 16px;
  padding: 12px 16px;
  height: 44px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  outline: none;
  transition: border-color 0.15s;
}

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

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

.form-message {
  font-size: 15px;
  padding: 14px 18px;
  border-radius: var(--rounded-md);
  margin-top: 16px;
  display: none;
}

.form-message.success {
  background: #e8f5f1;
  color: var(--success);
  border: 1px solid #b8e0d4;
  display: block;
}

.form-message.loading {
  background: var(--canvas-soft);
  color: var(--muted);
  border: 1px solid var(--hairline);
  display: block;
}

.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 24px 48px;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 12px;
}

.footer-heading {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 14px;
}

.footer-desc {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}

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

.footer-col li { margin-bottom: 8px; }

.footer-col a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}

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

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.footer-bottom a { color: var(--muted); text-decoration: underline; }

.footer-disclaimer {
  font-size: 12px;
  color: var(--muted-soft);
}

.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--surface-card);
  border-top: 1px solid var(--hairline-strong);
  z-index: 1000;
  padding: 16px 24px;
}

.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-inner p {
  font-size: 14px;
  color: var(--body);
}

.cookie-inner a { color: var(--primary); text-decoration: underline; }

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

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { margin: 0 6px; }

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

main { flex: 1; }

@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .hero-band h1 { font-size: 42px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 10px 12px; }
  .articles-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-band h1 { font-size: 32px; letter-spacing: -0.5px; }
  .section-title { font-size: 28px; }
  .article-main h1 { font-size: 30px; }
  .page-layout h1 { font-size: 30px; }
}

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