@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;
  --muted:          #807d72;
  --muted-soft:     #a09c92;
  --on-primary:     #ffffff;
  --hairline:       #e6e5e0;
  --hairline-soft:  #efeee8;
  --hairline-strong:#cfcdc4;
  --success:        #1f8a65;
  --error:          #cf2d56;
  --r-xs:  4px;
  --r-sm:  6px;
  --r-md:  8px;
  --r-lg:  12px;
  --r-xl:  16px;
  --r-pill:9999px;
}

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

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--hairline); }
a:hover { text-decoration-color: var(--primary); color: var(--primary); }

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

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

.rh-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.rh-nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.rh-nav__logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.3px;
  flex-shrink: 0;
}
.rh-nav__logo span { color: var(--primary); }
.rh-nav__menu {
  display: flex;
  list-style: none;
  gap: 4px;
  margin-left: auto;
  align-items: center;
}
.rh-nav__menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.rh-nav__menu a:hover,
.rh-nav__menu a[aria-current="page"] {
  background: var(--surface-strong);
  color: var(--ink);
}
.rh-nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}
.rh-nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.rh-hero {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--hairline);
}
.rh-hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.rh-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);
  border-radius: var(--r-pill);
  padding: 4px 10px;
  margin-bottom: 20px;
}
.rh-hero h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 20px;
}
.rh-hero__lead {
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  margin-bottom: 32px;
  max-width: 480px;
}
.rh-hero__meta {
  font-size: 13px;
  color: var(--muted);
}
.rh-hero__img {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  aspect-ratio: 4/3;
  background: var(--surface-strong);
}
.rh-hero__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.section { padding: 80px 0; }
.section--alt { background: var(--canvas-soft); }
.section__label {
  display: inline-block;
  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__lead {
  font-size: 16px;
  color: var(--body);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 48px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--hairline-strong); }
.card__img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--surface-strong);
}
.card__img img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: 24px; }
.card__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 10px;
}
.card__excerpt {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 16px;
}
.card__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
}
.card__link:hover { text-decoration: underline; color: var(--primary-active); }

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-block {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 24px;
}
.info-block__icon {
  font-size: 24px;
  margin-bottom: 12px;
}
.info-block__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.info-block p { font-size: 14px; color: var(--body); line-height: 1.5; }

.article-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 80px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  align-items: start;
}
.article-content h1 {
  font-size: 40px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}
.article-content .article-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
}
.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 14px;
}
.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 10px;
}
.article-content p { margin-bottom: 18px; line-height: 1.7; }
.article-content ul, .article-content ol {
  margin: 0 0 18px 24px;
  line-height: 1.7;
}
.article-content li { margin-bottom: 6px; }
.article-content .article-img {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  margin: 32px 0;
}
.article-content .article-img img { width: 100%; height: auto; }
.article-content .article-img figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 16px;
  background: var(--canvas-soft);
}
.article-content .info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}
.article-content .info-table th,
.article-content .info-table td {
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--hairline);
}
.article-content .info-table th {
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 600;
}
.article-content .highlight-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--r-md);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 14px;
  color: var(--body);
}
.article-sidebar { position: sticky; top: 80px; }
.sidebar-widget {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: 20px;
  margin-bottom: 24px;
}
.sidebar-widget h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sidebar-widget ul { list-style: none; }
.sidebar-widget ul li { margin-bottom: 8px; }
.sidebar-widget ul a { font-size: 14px; color: var(--body); text-decoration: none; }
.sidebar-widget ul a:hover { color: var(--primary); }

.contact-section { max-width: 640px; margin: 0 auto; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 14px; font-weight: 500; color: var(--ink); }
.form-group input,
.form-group textarea {
  background: var(--surface-card);
  color: var(--ink);
  font-family: inherit;
  font-size: 16px;
  padding: 12px 16px;
  height: 44px;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--r-md);
  outline: none;
  transition: border-color 0.15s;
}
.form-group textarea { height: auto; min-height: 120px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group input.invalid,
.form-group textarea.invalid { border-color: var(--error); }
.form-message {
  display: none;
  padding: 14px 16px;
  border-radius: var(--r-md);
  font-size: 14px;
}
.form-message--success {
  background: #eaf7f2;
  color: var(--success);
  border: 1px solid #b3e0d0;
}

.page-hero { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.page-hero__inner { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.page-hero h1 {
  font-size: 40px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}
.page-hero p { font-size: 16px; color: var(--body); line-height: 1.6; }

.prose {
  max-width: 800px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.prose h2 {
  font-size: 26px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.325px;
  margin: 40px 0 14px;
}
.prose h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 10px;
}
.prose p { margin-bottom: 18px; line-height: 1.7; }
.prose ul, .prose ol { margin: 0 0 18px 24px; line-height: 1.7; }
.prose li { margin-bottom: 6px; }
.prose .update-date { font-size: 13px; color: var(--muted); margin-bottom: 32px; }

.breadcrumbs {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px 0;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs span { margin: 0 6px; }

.rh-footer {
  border-top: 1px solid var(--hairline);
  background: var(--canvas);
  padding: 64px 0 48px;
}
.rh-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.rh-footer__brand p { font-size: 14px; color: var(--body); margin-top: 12px; line-height: 1.6; max-width: 280px; }
.rh-footer__col h3 { font-size: 13px; font-weight: 600; color: var(--ink); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 14px; }
.rh-footer__col ul { list-style: none; }
.rh-footer__col li { margin-bottom: 8px; }
.rh-footer__col a { font-size: 14px; color: var(--body); text-decoration: none; }
.rh-footer__col a:hover { color: var(--primary); }
.rh-footer__bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 0;
  border-top: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--muted);
}
.rh-footer__bottom a { color: var(--muted); text-decoration: none; }
.rh-footer__bottom a:hover { color: var(--primary); }

.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  z-index: 200;
  padding: 16px 24px;
}
.cookie-banner__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cookie-banner p { font-size: 14px; line-height: 1.5; color: var(--canvas-soft); }
.cookie-banner a { color: var(--canvas); }
.cookie-banner__actions { display: flex; gap: 12px; flex-shrink: 0; }
.cookie-banner .btn-primary { background: var(--primary); }
.cookie-banner .btn-secondary {
  background: transparent;
  color: var(--canvas);
  border-color: var(--muted);
}
.cookie-banner .btn-secondary:hover { background: rgba(255,255,255,0.1); color: var(--canvas); }

@media (max-width: 1024px) {
  .rh-hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .rh-hero h1 { font-size: 40px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .info-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; gap: 40px; }
  .article-sidebar { position: static; }
  .rh-footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .rh-nav__menu { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; gap: 4px; }
  .rh-nav__menu.is-open { display: flex; }
  .rh-nav__inner { position: relative; }
  .rh-nav__burger { display: flex; }
  .rh-hero { padding: 48px 0 40px; }
  .rh-hero h1 { font-size: 32px; }
  .section { padding: 48px 0; }
  .section__title { font-size: 28px; }
  .card-grid, .info-grid { grid-template-columns: 1fr; }
  .article-content h1 { font-size: 28px; }
  .rh-footer__inner { grid-template-columns: 1fr; gap: 32px; }
  .rh-footer__bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 640px) {
  .cookie-banner__inner { flex-direction: column; align-items: flex-start; }
}