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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --success: #1f8a65;
  --error: #cf2d56;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;
}

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

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

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.2px;
  white-space: nowrap;
}

.site-logo span {
  color: var(--primary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

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

.hero-section {
  padding: 80px 0 64px;
  background: var(--canvas);
}

.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

.hero-title {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.2px;
  color: var(--ink);
  max-width: 760px;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.55;
  color: var(--body);
  max-width: 580px;
  margin-bottom: 40px;
}

.hero-image {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  margin-top: 48px;
}

.section {
  padding: 80px 0;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.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;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
}

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

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.article-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-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 24px 24px;
}

.article-card-tag {
  display: inline-block;
  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;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 10px;
}

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

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

.page-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}

.page-hero-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.page-hero-title {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  max-width: 760px;
  margin-bottom: 16px;
}

.page-hero-meta {
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.page-hero-meta span::before {
  content: '·';
  margin-right: 16px;
}

.page-hero-meta span:first-child::before {
  content: '';
  margin-right: 0;
}

.article-content {
  padding: 56px 0 80px;
}

.article-body {
  max-width: 720px;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 48px 0 16px;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  margin: 32px 0 12px;
}

.article-body p {
  font-size: 16px;
  line-height: 1.65;
  color: var(--body);
  margin-bottom: 20px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 20px 24px;
  color: var(--body);
}

.article-body li {
  font-size: 16px;
  line-height: 1.65;
  margin-bottom: 8px;
}

.article-body strong {
  color: var(--body-strong);
  font-weight: 600;
}

.article-body a {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-strong);
  transition: border-color 0.15s, color 0.15s;
}

.article-body a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.article-figure {
  margin: 32px 0;
}

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

.article-figure figcaption {
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.4;
}

.info-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 32px 0;
}

.info-box h4 {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: 12px;
}

.info-box ul {
  margin: 0;
  padding-left: 20px;
}

.info-box li {
  font-size: 15px;
  line-height: 1.6;
  color: var(--body);
  margin-bottom: 6px;
}

.gear-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}

.gear-table th {
  text-align: left;
  padding: 10px 16px;
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
}

.gear-table td {
  padding: 10px 16px;
  border: 1px solid var(--hairline);
  color: var(--body);
  line-height: 1.5;
}

.gear-table tr:nth-child(even) td {
  background: var(--canvas-soft);
}

.article-sidebar {
  position: sticky;
  top: 88px;
}

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

.sidebar-box h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: 16px;
}

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

.sidebar-box li {
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
}

.sidebar-box li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-box li a {
  color: var(--body);
  font-weight: 500;
}

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

.two-col-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
}

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

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

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

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

.contact-section {
  padding: 80px 0;
  border-top: 1px solid var(--hairline);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--body);
  margin-bottom: 12px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--body-strong);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  line-height: 1.5;
  transition: border-color 0.15s;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--ink);
}

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

.form-msg {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
}

.form-msg.success {
  background: #e8f5f0;
  color: var(--success);
  border: 1px solid #b0dece;
}

.form-msg.error {
  background: #fdf0f2;
  color: var(--error);
  border: 1px solid #f0b3bc;
}

.site-footer {
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 64px 0 48px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--body);
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h5 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.88px;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col li a {
  font-size: 14px;
  color: var(--body);
  transition: color 0.15s;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom a {
  color: var(--muted);
  margin-left: 20px;
}

.footer-bottom a:hover {
  color: var(--body);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: var(--ink);
  color: var(--canvas);
  padding: 20px 0;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.cookie-banner.visible {
  transform: translateY(0);
}

.cookie-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-text {
  font-size: 14px;
  line-height: 1.5;
  flex: 1;
}

.cookie-text a {
  color: var(--canvas);
  border-bottom: 1px solid rgba(247,247,244,0.4);
}

.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.cookie-btn {
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(247,247,244,0.3);
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1;
}

.cookie-btn-accept {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.cookie-btn-accept:hover {
  background: var(--primary-active);
}

.cookie-btn-reject {
  background: transparent;
  color: var(--canvas);
}

.cookie-btn-reject:hover {
  background: rgba(247,247,244,0.1);
}

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--body);
}

.breadcrumb-sep {
  color: var(--muted-soft);
}

.prose-section {
  padding: 56px 0 80px;
}

.prose-body {
  max-width: 760px;
}

.prose-body h2 {
  font-size: 22px;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin: 40px 0 14px;
}

.prose-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin: 28px 0 10px;
}

.prose-body p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--body);
  margin-bottom: 18px;
}

.prose-body ul,
.prose-body ol {
  margin: 0 0 18px 22px;
  color: var(--body);
}

.prose-body li {
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 6px;
}

.prose-body a {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-strong);
}

.prose-body a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
  padding: 56px 0 80px;
}

.about-image {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
}

.related-articles {
  padding: 56px 0 80px;
  border-top: 1px solid var(--hairline);
}

.related-articles .section-title {
  font-size: 22px;
  margin-bottom: 28px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.badge {
  display: inline-block;
  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(--radius-pill);
}

.disclaimer {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  margin: 32px 0;
}

@media (max-width: 1024px) {
  .hero-title {
    font-size: 40px;
    letter-spacing: -0.8px;
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .two-col-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px;
    gap: 14px;
  }

  .site-nav.open {
    display: flex;
  }

  .hero-title {
    font-size: 32px;
    letter-spacing: -0.5px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom a {
    margin-left: 0;
  }

  .cookie-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .hero-section {
    padding: 48px 0 40px;
  }

  .section {
    padding: 56px 0;
  }

  .page-hero {
    padding: 48px 0 36px;
  }

  .page-hero-title {
    font-size: 28px;
  }
}