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

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

a { color: inherit; text-decoration: none; }
a:hover { color: var(--ink); }
img { max-width: 100%; height: auto; display: block; }
code, pre, .mono { font-family: 'JetBrains Mono', monospace; }

.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 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-wordmark {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
}
.nav-wordmark span { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  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-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}
.nav-mobile {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  padding: 16px 24px;
}
.nav-mobile.open { display: block; }
.nav-mobile ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.nav-mobile ul a { font-size: 15px; font-weight: 500; color: var(--body); }

/* HERO */
.hero-band {
  background: var(--canvas);
  padding: 80px 0;
  text-align: center;
}
.hero-band h1 {
  font-size: 72px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -2.16px;
  color: var(--ink);
  max-width: 800px;
  margin: 0 auto 20px;
}
.hero-band .hero-sub {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
  margin: 0 auto 32px;
}
.hero-meta {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

/* BUTTONS */
.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;
  display: inline-flex;
  align-items: center;
  line-height: 1;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--primary-active); color: var(--on-primary); }
.btn-secondary {
  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;
  line-height: 1;
  transition: border-color 0.15s;
}
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

/* BADGE PILL */
.badge-pill {
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  border-radius: var(--rounded-pill);
  padding: 4px 10px;
  display: inline-block;
}

/* SECTION */
.section {
  padding: 80px 0;
}
.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;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 16px;
  font-weight: 400;
  color: var(--body);
  line-height: 1.5;
  max-width: 600px;
  margin-bottom: 48px;
}
.section-divider {
  border: none;
  border-top: 1px solid var(--hairline);
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  gap: 16px;
}
.cards-grid-3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid-2 { grid-template-columns: repeat(2, 1fr); }

.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;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
}

/* 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;
}
.article-card:hover { border-color: var(--hairline-strong); }
.article-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.article-card-body { padding: 20px; }
.article-card-body .badge-pill { margin-bottom: 12px; }
.article-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 8px;
}
.article-card-body p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 14px;
}
.article-card-body .article-meta {
  font-size: 13px;
  color: var(--muted);
}

/* ARTICLE PAGE */
.article-hero {
  padding: 60px 0 40px;
  background: var(--canvas);
}
.article-hero h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -0.96px;
  color: var(--ink);
  line-height: 1.15;
  max-width: 780px;
  margin-bottom: 16px;
}
.article-hero .article-lead {
  font-size: 18px;
  font-weight: 400;
  color: var(--body);
  line-height: 1.5;
  max-width: 680px;
  margin-bottom: 20px;
}
.article-hero .article-meta { font-size: 13px; color: var(--muted); }

.article-body {
  padding: 40px 0 80px;
}
.article-content {
  max-width: 720px;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  line-height: 1.25;
  margin: 40px 0 14px;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
  margin: 28px 0 10px;
}
.article-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 18px;
}
.article-content ul, .article-content ol {
  margin: 0 0 18px 20px;
}
.article-content li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 6px;
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-content a:hover { color: var(--primary-active); }
.article-content img {
  border-radius: var(--rounded-lg);
  margin: 24px 0;
  width: 100%;
  border: 1px solid var(--hairline);
}
.article-content .img-caption {
  font-size: 13px;
  color: var(--muted);
  margin-top: -18px;
  margin-bottom: 24px;
}
.article-content .info-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 20px 24px;
  margin: 24px 0;
}
.article-content .info-box h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.article-content .info-box p { margin-bottom: 0; }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content th {
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--hairline);
}
.article-content td {
  padding: 10px 14px;
  border: 1px solid var(--hairline);
  color: var(--body);
  background: var(--surface-card);
}
.article-content tr:nth-child(even) td { background: var(--canvas-soft); }

.code-block {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--ink);
  line-height: 1.5;
  overflow-x: auto;
  margin: 20px 0;
}

/* SIDEBAR */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}
.article-sidebar { position: sticky; top: 88px; }
.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 20px;
  margin-bottom: 16px;
}
.sidebar-card h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: 12px;
}
.sidebar-card ul { list-style: none; }
.sidebar-card ul li {
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hairline-soft);
}
.sidebar-card ul li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.sidebar-card ul a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
  transition: color 0.15s;
}
.sidebar-card ul a:hover { color: var(--ink); }

/* CONTACT FORM */
.contact-section {
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 80px 0;
}
.contact-form {
  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(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  font-size: 16px;
  font-family: inherit;
  line-height: 1.5;
  transition: border-color 0.15s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--ink); }
.form-group textarea { min-height: 110px; resize: vertical; }
.form-message {
  font-size: 14px;
  padding: 12px 16px;
  border-radius: var(--rounded-md);
  margin-top: 14px;
  display: none;
}
.form-message.success {
  background: #d4edda;
  color: var(--semantic-success);
  border: 1px solid #b8dcc4;
  display: block;
}
.form-message.loading {
  background: var(--surface-strong);
  color: var(--muted);
  border: 1px solid var(--hairline);
  display: block;
}

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 16px 24px;
  z-index: 200;
  display: none;
}
.cookie-banner.visible { display: block; }
.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cookie-inner p { font-size: 14px; line-height: 1.5; flex: 1; min-width: 200px; }
.cookie-inner p a { color: var(--canvas-soft); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--rounded-md);
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject {
  background: transparent;
  color: var(--canvas);
  border: 1px solid rgba(247,247,244,0.4);
  border-radius: var(--rounded-md);
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s;
}
.btn-cookie-reject:hover { border-color: var(--canvas); }

/* 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: 32px;
  margin-bottom: 48px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-top: 8px;
  max-width: 240px;
}
.footer-col h5 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--ink);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { font-size: 14px; color: var(--body); transition: color 0.15s; }
.footer-col ul a:hover { color: var(--ink); }
.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 13px; color: var(--muted); }

/* PAGE INNER */
.page-hero {
  padding: 64px 0 48px;
}
.page-hero h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -0.96px;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 12px;
}
.page-hero p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.5;
  max-width: 600px;
}
.page-body {
  padding: 0 0 80px;
}
.page-content {
  max-width: 720px;
}
.page-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 36px 0 12px;
}
.page-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 8px;
}
.page-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}
.page-content ul, .page-content ol {
  margin: 0 0 16px 20px;
}
.page-content li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 6px;
}
.page-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero-band h1 { font-size: 56px; letter-spacing: -1.4px; }
  .cards-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero-band h1 { font-size: 36px; letter-spacing: -0.9px; }
  .section-title { font-size: 28px; }
  .article-hero h1 { font-size: 32px; }
  .page-hero h1 { font-size: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .cards-grid-3, .cards-grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-band { padding: 48px 0; }
  .section { padding: 48px 0; }
}