@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;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --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 {
  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: inherit; text-decoration: none; }
a:hover { color: var(--ink); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

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

/* TOP NAV */
.site-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.nav-logo span { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.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;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.2s;
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  padding: 16px 24px 24px;
  z-index: 99;
  flex-direction: column;
  gap: 0;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--body);
  padding: 12px 0;
  border-bottom: 1px solid var(--hairline-soft);
}
.mobile-menu a:last-child { border-bottom: none; }

/* HERO */
.hero {
  padding: 80px 0 80px;
  border-bottom: 1px solid var(--hairline);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-text {}
.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: 20px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--ink);
  margin-bottom: 20px;
}
.hero-desc {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  max-width: 420px;
}
.hero-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.hero-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

/* SECTIONS */
.section {
  padding: 80px 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: 12px;
}
.section-title {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  max-width: 560px;
  margin-bottom: 48px;
}

/* ARTICLE CARDS GRID */
.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-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.article-card-body {
  padding: 24px;
}
.article-card-category {
  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;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 10px;
}
.article-card-excerpt {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 16px;
}
.article-card-date {
  font-size: 13px;
  color: var(--muted-soft);
}

/* FEATURE ROW */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-content {}
.feature-title {
  font-size: 26px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: 16px;
}
.feature-text {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}
.feature-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.feature-image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
}

/* TIPS LIST */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.tip-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
}
.tip-number {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}
.tip-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 10px;
}
.tip-text {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}

/* ARTICLE PAGE */
.article-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}
.article-header .article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.article-category-pill {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  background: var(--surface-strong);
  color: var(--ink);
  padding: 4px 10px;
  border-radius: var(--rounded-pill);
}
.article-date {
  font-size: 13px;
  color: var(--muted);
}
.article-header h1 {
  font-size: 42px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 20px;
  max-width: 780px;
}
.article-header .lead {
  font-size: 18px;
  color: var(--body);
  line-height: 1.6;
  max-width: 660px;
}
.article-hero-image {
  margin-top: 40px;
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.article-hero-image img {
  width: 100%;
  height: 460px;
  object-fit: cover;
}
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  padding: 64px 0 80px;
  align-items: start;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 16px;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  margin: 28px 0 12px;
}
.article-body p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 20px;
}
.article-body ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 20px;
}
.article-body ul li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 8px;
}
.article-body ol {
  list-style: decimal;
  padding-left: 20px;
  margin-bottom: 20px;
}
.article-body ol li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 8px;
}
.article-body .callout {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--rounded-md);
  padding: 20px 24px;
  margin: 28px 0;
  font-size: 15px;
  color: var(--body-strong);
  line-height: 1.5;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.article-sidebar {
  position: sticky;
  top: 84px;
}
.sidebar-widget {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 24px;
  margin-bottom: 24px;
}
.sidebar-widget-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.88px;
  margin-bottom: 16px;
}
.sidebar-links { display: flex; flex-direction: column; gap: 12px; }
.sidebar-links a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
  border-bottom: 1px solid var(--hairline-soft);
  padding-bottom: 12px;
}
.sidebar-links a:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-links a:hover { color: var(--ink); }

/* BREADCRUMB */
.breadcrumb {
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline-soft);
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb-list a { color: var(--muted); }
.breadcrumb-list a:hover { color: var(--ink); }
.breadcrumb-sep { color: var(--muted-soft); }

/* CONTACT FORM */
.contact-section {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-xl);
  padding: 48px;
  max-width: 640px;
  margin: 0 auto;
}
.contact-section h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: 8px;
}
.contact-section p {
  font-size: 15px;
  color: var(--body);
  margin-bottom: 32px;
}
.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);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  height: 44px;
  transition: border-color 0.15s;
  outline: none;
}
.form-group textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--ink);
}
.form-group input.error,
.form-group textarea.error {
  border-color: var(--semantic-error);
}
.form-error-msg {
  font-size: 13px;
  color: var(--semantic-error);
  margin-top: 4px;
  display: none;
}
.form-error-msg.visible { display: block; }
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  font-family: 'Inter', sans-serif;
  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-success {
  display: none;
  background: #f0faf5;
  border: 1px solid #9fd4b8;
  border-radius: var(--rounded-md);
  padding: 16px 20px;
  color: var(--semantic-success);
  font-size: 15px;
  margin-top: 16px;
}
.form-success.visible { display: block; }

/* PAGE CONTENT */
.page-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}
.page-header h1 {
  font-size: 42px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 12px;
}
.page-header .page-desc {
  font-size: 17px;
  color: var(--body);
  max-width: 560px;
}
.page-content {
  padding: 64px 0 80px;
  max-width: 740px;
}
.page-content h2 {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin: 36px 0 12px;
}
.page-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 10px;
}
.page-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 18px;
}
.page-content ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 18px;
}
.page-content ul 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;
}
.page-updated {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 32px;
}

/* FOOTER */
.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 48px 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .nav-logo {
  display: inline-block;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  max-width: 260px;
}
.footer-col-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
  transition: color 0.15s;
}
.footer-links 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;
}
.footer-copy {
  font-size: 13px;
  color: var(--muted);
}
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: 13px;
  color: var(--muted);
  transition: color 0.15s;
}
.footer-legal a:hover { color: var(--ink); }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 720px;
  background: var(--ink);
  color: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  z-index: 999;
  box-shadow: 0 4px 24px rgba(38, 37, 30, 0.18);
}
.cookie-banner.hidden { display: none; }
.cookie-text {
  font-size: 14px;
  line-height: 1.5;
  color: #ccc;
  flex: 1;
}
.cookie-text a {
  color: var(--canvas);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.cookie-btn-accept {
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}
.cookie-btn-accept:hover { background: var(--primary-active); }
.cookie-btn-reject {
  background: transparent;
  color: var(--muted-soft);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: 1px solid #444;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.cookie-btn-reject:hover { border-color: #888; color: var(--canvas); }

/* DIVIDER */
.divider {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: 0;
}

/* RELATED ARTICLES */
.related-articles {
  padding: 64px 0;
  border-top: 1px solid var(--hairline);
}
.related-articles .section-title { margin-bottom: 32px; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .tips-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 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-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 36px; }
  .hero-image img { height: 260px; }
  .section-title { font-size: 28px; }
  .feature-row { grid-template-columns: 1fr; gap: 32px; }
  .feature-row.reverse { direction: ltr; }
  .feature-image img { height: 240px; }
  .article-header h1 { font-size: 28px; }
  .article-hero-image img { height: 240px; }
  .contact-section { padding: 32px 20px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
  .page-header h1 { font-size: 30px; }
}

@media (max-width: 640px) {
  .articles-grid { grid-template-columns: 1fr; }
  .tips-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 30px; }
  .hero { padding: 48px 0; }
  .section { padding: 48px 0; }
}