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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --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;
}

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

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);
  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-nav {
  background-color: 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: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-mark {
  width: 28px;
  height: 28px;
  background-color: var(--ink);
  border-radius: var(--rounded-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-logo-mark span {
  color: var(--canvas);
  font-size: 13px;
  font-weight: 600;
}

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

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.15s;
}

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

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

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  background-color: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  padding: 16px 24px 24px;
}

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

.nav-mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.nav-mobile ul a {
  font-size: 15px;
  font-weight: 500;
  color: var(--body);
}

.hero-band {
  padding: 80px 0;
  background-color: var(--canvas);
  border-bottom: 1px solid var(--hairline);
}

.hero-band h1 {
  font-size: 52px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.5px;
  color: var(--ink);
  max-width: 780px;
  margin-bottom: 20px;
}

.hero-band .hero-sub {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 0;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

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

.badge-pill.accent {
  background-color: var(--primary);
  color: #ffffff;
}

.section {
  padding: 80px 0;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 24px;
}

.section-title {
  font-size: 32px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin-bottom: 12px;
}

.section-sub {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 48px;
}

.section + .section {
  border-top: 1px solid var(--hairline-soft);
}

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

.article-card {
  background-color: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  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;
  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(--muted);
  margin-bottom: 10px;
}

.article-card-title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 12px;
}

.article-card-excerpt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--body);
  flex: 1;
  margin-bottom: 16px;
}

.article-card-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-card-link::after {
  content: '→';
  font-size: 14px;
}

.hero-image-wrap {
  margin-top: 48px;
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.hero-image-wrap img {
  width: 100%;
  max-height: 440px;
  object-fit: cover;
}

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

.article-page-hero .hero-date {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.article-page-hero h1 {
  font-size: 40px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.4px;
  color: var(--ink);
  max-width: 820px;
  margin-bottom: 20px;
}

.article-page-hero .hero-sub {
  font-size: 17px;
  line-height: 1.55;
  color: var(--body);
  max-width: 680px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  padding: 64px 0 80px;
  align-items: start;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.2px;
  color: var(--ink);
  margin: 40px 0 16px;
  padding-top: 8px;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}

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

.article-body ul,
.article-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

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

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

.article-body .article-img-block {
  margin: 32px 0;
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.article-body .article-img-block img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}

.article-body .img-caption {
  font-size: 13px;
  color: var(--muted);
  padding: 10px 16px;
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline);
}

.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-bottom: 0;
  font-size: 15px;
  line-height: 1.65;
}

.checklist {
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

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

.checklist li::before {
  content: '';
  width: 16px;
  height: 16px;
  min-width: 16px;
  border: 2px solid var(--hairline-strong);
  border-radius: var(--rounded-xs);
  margin-top: 3px;
}

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

.sidebar-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.sidebar-card ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

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

.sidebar-card ul li a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}

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

.sidebar-card .sidebar-fact {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  padding: 8px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

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

.sidebar-card .sidebar-fact strong {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: 2px;
}

.page-content {
  padding: 64px 0 80px;
  max-width: 820px;
}

.page-content h1 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.3px;
  color: var(--ink);
  margin-bottom: 8px;
}

.page-content .page-updated {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 40px;
}

.page-content h2 {
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  margin: 40px 0 14px;
}

.page-content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--body);
  margin-bottom: 18px;
}

.page-content ul, .page-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

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

.contact-form {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 40px;
  max-width: 600px;
  margin-top: 48px;
}

.contact-form h2 {
  font-size: 22px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 8px;
}

.contact-form .form-sub {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 28px;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
}

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

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

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted-soft);
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  height: 40px;
  border-radius: var(--rounded-md);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  transition: background-color 0.15s;
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.form-message.success {
  background: #e8f5f0;
  color: var(--semantic-success);
  border: 1px solid #b3ddd0;
  display: block;
}

.form-message.error {
  background: #fdeef2;
  color: var(--semantic-error);
  border: 1px solid #f3c3cf;
  display: block;
}

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

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--hairline-soft);
  margin-bottom: 32px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  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(--muted);
  text-decoration: none;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

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

.footer-bottom .disclaimer {
  font-size: 12px;
  color: var(--muted-soft);
  max-width: 540px;
  text-align: right;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 16px 24px;
  z-index: 999;
  display: none;
}

.cookie-banner.visible {
  display: block;
}

.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.cookie-inner p {
  font-size: 13px;
  line-height: 1.5;
  color: #d4d1c9;
  max-width: 720px;
}

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

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

.btn-cookie-accept {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--rounded-md);
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.btn-cookie-reject {
  background: transparent;
  color: var(--canvas);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--rounded-md);
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 13px;
  color: var(--muted);
  border-bottom: 1px solid var(--hairline-soft);
  margin-bottom: 8px;
}

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

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

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

.related-articles {
  border-top: 1px solid var(--hairline);
  padding-top: 48px;
  margin-top: 64px;
}

.related-articles h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 24px;
}

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

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

.related-card .rc-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.related-card h3 {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
  margin-bottom: 8px;
}

.related-card p {
  font-size: 13px;
  color: var(--body);
  line-height: 1.55;
  margin-bottom: 12px;
}

.related-card a.rc-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
}

@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .article-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }
  .hero-band h1 {
    font-size: 34px;
  }
  .section-title {
    font-size: 26px;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-bottom .disclaimer {
    text-align: left;
  }
  .contact-form {
    padding: 24px;
  }
  .article-page-hero h1 {
    font-size: 28px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .cookie-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }
  .hero-band {
    padding: 48px 0;
  }
  .section {
    padding: 48px 0;
  }
  .hero-band h1 {
    font-size: 28px;
  }
}