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

: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;
  --on-primary: #ffffff;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --semantic-success: #1f8a65;
  --semantic-error: #cf2d56;
  --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  background: var(--canvas);
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--ink); }
img { display: block; max-width: 100%; height: auto; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.rdc-nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.rdc-nav__logo {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.2px;
  white-space: nowrap;
  flex-shrink: 0;
}

.rdc-nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.rdc-nav__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

.rdc-nav__link:hover,
.rdc-nav__link.is-active {
  color: var(--ink);
  background: var(--surface-strong);
}

.rdc-nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

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

@media (max-width: 767px) {
  .rdc-nav__toggle { display: flex; }
  .rdc-nav__links {
    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: 12px 24px 20px;
    gap: 2px;
    display: none;
  }
  .rdc-nav__links.is-open { display: flex; }
}

.hero {
  padding: 80px 0 64px;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline-soft);
}

.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(--radius-pill);
  margin-bottom: 24px;
}

.hero__title {
  font-size: 56px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.4px;
  color: var(--ink);
  max-width: 760px;
  margin-bottom: 20px;
}

.hero__desc {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.55;
  color: var(--body);
  max-width: 600px;
  margin-bottom: 40px;
}

.hero__meta {
  font-size: 13px;
  color: var(--muted);
}

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

@media (max-width: 767px) {
  .hero__title { font-size: 32px; letter-spacing: -0.8px; }
  .hero__desc { font-size: 16px; }
  .hero { padding: 48px 0 40px; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .hero__title { font-size: 44px; }
}

.section { padding: 80px 0; }
.section--alt { background: var(--canvas-soft); }
.section--bordered { border-top: 1px solid var(--hairline-soft); }

.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;
  color: var(--body);
  max-width: 600px;
  margin-bottom: 48px;
  line-height: 1.6;
}

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

@media (max-width: 1023px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 639px)  { .card-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.15s;
}

.card:hover { border-color: var(--hairline-strong); }

.card__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card__body { padding: 24px; }

.card__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.card__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
  margin-bottom: 10px;
}

.card__excerpt {
  font-size: 14px;
  color: var(--body);
  line-height: 1.55;
  margin-bottom: 20px;
}

.card__link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-strong);
  padding-bottom: 2px;
  transition: border-color 0.15s;
}

.card__link:hover { border-color: var(--ink); }

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

.article-hero__breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 24px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.article-hero__breadcrumb a { color: var(--muted); }
.article-hero__breadcrumb a:hover { color: var(--ink); }

.article-hero__tag {
  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(--radius-pill);
  display: inline-block;
  margin-bottom: 20px;
}

.article-hero__title {
  font-size: 44px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1.1px;
  color: var(--ink);
  max-width: 800px;
  margin-bottom: 20px;
}

.article-hero__desc {
  font-size: 18px;
  color: var(--body);
  max-width: 640px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.article-hero__meta {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  gap: 16px;
}

.article-hero__img {
  margin-top: 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  width: 100%;
  max-height: 500px;
  object-fit: cover;
}

@media (max-width: 767px) {
  .article-hero__title { font-size: 28px; letter-spacing: -0.6px; }
  .article-hero__desc { font-size: 16px; }
  .article-hero { padding: 40px 0 32px; }
}

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

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

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

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 32px 0 12px;
  line-height: 1.3;
}

.article-body p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 20px;
  letter-spacing: 0.08px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 20px 20px;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 6px;
}

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

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

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

.article-body figure {
  margin: 40px 0;
}

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

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

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

.info-box__title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

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

.table-wrap {
  overflow-x: auto;
  margin: 32px 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
}

.rdc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--surface-card);
}

.rdc-table th {
  background: var(--canvas-soft);
  color: var(--ink);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}

.rdc-table td {
  padding: 12px 16px;
  color: var(--body);
  border-bottom: 1px solid var(--hairline-soft);
  line-height: 1.5;
}

.rdc-table tr:last-child td { border-bottom: none; }

.article-sidebar {
  flex: 0 0 300px;
  max-width: 300px;
}

.article-layout {
  display: flex;
  gap: 56px;
  align-items: flex-start;
}

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

.sidebar-card__title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  border-bottom: 1px solid var(--hairline-soft);
  padding-bottom: 12px;
}

.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: 1.4;
}

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

@media (max-width: 1023px) {
  .article-layout { flex-direction: column; }
  .article-sidebar { flex: none; max-width: 100%; width: 100%; }
}

.form-section {
  padding: 80px 0;
  border-top: 1px solid var(--hairline-soft);
  background: var(--canvas-soft);
}

.contact-form {
  max-width: 600px;
}

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

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
}

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

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

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

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

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  height: 40px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  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; }

.btn-secondary {
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  padding: 10px 18px;
  height: 40px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-secondary:hover { background: var(--canvas-soft); }

.form-success {
  display: none;
  background: #f0faf5;
  border: 1px solid #a8e0c8;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  color: var(--semantic-success);
  font-size: 15px;
  margin-top: 16px;
}

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

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

.page-hero__title {
  font-size: 44px;
  font-weight: 400;
  letter-spacing: -1.1px;
  color: var(--ink);
  margin-bottom: 16px;
}

.page-hero__desc {
  font-size: 18px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.6;
}

@media (max-width: 767px) {
  .page-hero__title { font-size: 28px; }
  .page-hero { padding: 40px 0 32px; }
}

.page-content {
  padding: 56px 0 80px;
  max-width: 720px;
}

.page-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin: 40px 0 12px;
}

.page-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 18px;
  letter-spacing: 0.08px;
}

.page-content ul {
  margin: 0 0 18px 20px;
  list-style: disc;
}

.page-content li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 6px;
}

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

.page-content a:hover { border-color: var(--ink); }

.updated-date {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
  display: block;
}

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

.rdc-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

@media (max-width: 1023px) {
  .rdc-footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 639px) {
  .rdc-footer__inner { grid-template-columns: 1fr; }
}

.rdc-footer__brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 12px;
}

.rdc-footer__desc {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}

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

.rdc-footer__col ul li {
  margin-bottom: 8px;
}

.rdc-footer__col ul li a {
  font-size: 14px;
  color: var(--body);
}

.rdc-footer__col ul li a:hover { color: var(--ink); }

.rdc-footer__col p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
}

.rdc-footer__bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  border-top: 1px solid var(--hairline-soft);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.rdc-footer__bottom p {
  font-size: 13px;
  color: var(--muted);
}

.rdc-footer__legal {
  display: flex;
  gap: 20px;
}

.rdc-footer__legal a {
  font-size: 13px;
  color: var(--muted);
}

.rdc-footer__legal a:hover { color: var(--ink); }

.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 640px;
  background: var(--ink);
  color: var(--canvas);
  border-radius: var(--radius-lg);
  z-index: 999;
  box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}

.cookie-banner__inner {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-banner__inner p {
  font-size: 14px;
  color: var(--canvas-soft);
  line-height: 1.5;
  flex: 1;
  min-width: 200px;
}

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

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

.cookie-banner #cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  height: 36px;
  padding: 0 14px;
  font-size: 13px;
}

.cookie-banner #cookie-reject {
  background: transparent;
  color: var(--canvas-soft);
  border: 1px solid rgba(247,247,244,0.3);
  height: 36px;
  padding: 0 14px;
  font-size: 13px;
}

.cookie-banner #cookie-reject:hover {
  background: rgba(247,247,244,0.08);
}

.disclaimer {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
  margin: 32px 0;
}

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

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}

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