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

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

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--color-ink);
  text-decoration: none;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

.section {
  padding: 80px 0;
}

.section--soft {
  background-color: var(--color-canvas-soft);
}

h1, h2, h3, h4 {
  color: var(--color-ink);
  font-weight: 400;
  line-height: 1.2;
}

h1 {
  font-size: 56px;
  letter-spacing: -1.5px;
}

h2 {
  font-size: 36px;
  letter-spacing: -0.72px;
}

h3 {
  font-size: 26px;
  letter-spacing: -0.325px;
}

h4 {
  font-size: 22px;
  letter-spacing: -0.11px;
}

p {
  color: var(--color-body);
  line-height: 1.5;
  margin-bottom: 16px;
}

p:last-child {
  margin-bottom: 0;
}

.text-muted {
  color: var(--color-muted);
  font-size: 14px;
}

.text-ink {
  color: var(--color-ink);
}

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

nav.top-nav {
  background-color: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  height: 64px;
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  letter-spacing: -0.3px;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-body);
  transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-ink);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: all 0.2s ease;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--color-canvas);
  border-bottom: 1px solid var(--color-hairline);
  padding: 16px 24px;
  z-index: 99;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-body);
  display: block;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-hairline-soft);
}

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

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-label {
  margin-bottom: 16px;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 18px;
  color: var(--color-body);
  line-height: 1.6;
  margin-bottom: 40px;
}

.hero-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--color-hairline);
}

.hero-image img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
}

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

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--rounded-sm);
  background-color: var(--color-surface-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 20px;
}

.section-header {
  margin-bottom: 48px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header p {
  font-size: 17px;
  max-width: 560px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.article-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

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

.article-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.article-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 10px;
  line-height: 1.3;
}

.article-card p {
  font-size: 14px;
  color: var(--color-body);
  margin-bottom: 16px;
  flex: 1;
}

.article-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-hairline);
  padding-bottom: 2px;
  display: inline-block;
  margin-top: auto;
}

.article-card-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.article-meta {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 12px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--color-hairline);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}

.stat-item {
  background-color: var(--color-surface-card);
  padding: 32px 24px;
}

.stat-number {
  font-size: 36px;
  font-weight: 400;
  color: var(--color-ink);
  letter-spacing: -0.72px;
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--color-muted);
}

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

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 16px;
  margin-bottom: 24px;
}

.contact-detail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--color-body);
}

.contact-detail-icon {
  width: 20px;
  height: 20px;
  color: var(--color-muted);
  flex-shrink: 0;
  margin-top: 2px;
}

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

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

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

.form-input,
.form-textarea {
  width: 100%;
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--rounded-md);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--color-ink);
  font-family: inherit;
  height: 44px;
  transition: border-color 0.15s ease;
  outline: none;
}

.form-textarea {
  height: auto;
  min-height: 100px;
  resize: vertical;
}

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

.form-input.error,
.form-textarea.error {
  border-color: var(--color-error);
}

.form-error-msg {
  font-size: 13px;
  color: var(--color-error);
  margin-top: 4px;
  display: none;
}

.form-error-msg.visible {
  display: block;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.15s ease;
  width: 100%;
}

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

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

.btn-primary:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-success {
  display: none;
  padding: 16px;
  background-color: #edf7f3;
  border: 1px solid #9fdbca;
  border-radius: var(--rounded-md);
  color: var(--color-success);
  font-size: 14px;
  margin-top: 16px;
}

.form-success.visible {
  display: block;
}

.loading-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

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

.footer-brand p {
  font-size: 14px;
  color: var(--color-body);
  margin-top: 12px;
  max-width: 240px;
  line-height: 1.6;
}

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

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

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

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-hairline-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-muted);
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 13px;
  color: var(--color-muted);
}

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

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-ink);
  color: var(--color-canvas);
  padding: 20px 24px;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-banner p {
  color: var(--color-canvas);
  font-size: 14px;
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.cookie-banner p a {
  color: #f7f7f4;
  border-bottom: 1px solid rgba(247,247,244,0.4);
}

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

.btn-cookie-accept {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-cookie-reject {
  background-color: transparent;
  color: var(--color-canvas);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--rounded-md);
  border: 1px solid rgba(247,247,244,0.3);
  cursor: pointer;
  font-family: inherit;
}

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

.btn-cookie-reject:hover {
  border-color: rgba(247,247,244,0.6);
}

.page-hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--color-hairline);
}

.page-hero .label-uppercase {
  margin-bottom: 12px;
}

.page-hero h1 {
  font-size: 42px;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 17px;
  max-width: 640px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
  padding: 48px 0 80px;
}

.article-content h2 {
  font-size: 26px;
  margin: 40px 0 16px;
}

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

.article-content p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.article-content ul,
.article-content ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.article-content li {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-body);
  margin-bottom: 6px;
}

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

.article-content .info-box {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-left: 3px solid var(--color-ink);
  border-radius: var(--rounded-md);
  padding: 20px 24px;
  margin: 24px 0;
}

.article-content .info-box p {
  margin: 0;
  font-size: 15px;
}

.article-updated {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 32px;
}

.article-img-caption {
  font-size: 12px;
  color: var(--color-muted);
  text-align: center;
  margin-top: -24px;
  margin-bottom: 32px;
}

.sidebar-card {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-card h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.sidebar-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

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

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

.prose-section h2 {
  font-size: 28px;
  margin-bottom: 16px;
  margin-top: 48px;
}

.prose-section h2:first-child {
  margin-top: 0;
}

.prose-section p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.disclaimer-box {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  padding: 20px 24px;
  margin-bottom: 48px;
}

.disclaimer-box p {
  font-size: 13px;
  color: var(--color-muted);
  margin: 0;
}

@media (max-width: 1024px) {
  h1 { font-size: 44px; }
  h2 { font-size: 30px; }

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

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

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

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

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

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

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  h1 { font-size: 32px; letter-spacing: -0.8px; }
  h2 { font-size: 26px; }
  h3 { font-size: 22px; }

  .hero { padding: 48px 0; }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

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

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

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

  .page-hero h1 { font-size: 30px; }

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

@media (max-width: 480px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }

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

  .cookie-actions {
    width: 100%;
  }

  .btn-cookie-accept,
  .btn-cookie-reject {
    flex: 1;
    text-align: center;
  }
}