*, *::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;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --semantic-success: #1f8a65;
  --semantic-error: #cf2d56;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  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);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.nav-brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.5px;
}

.nav-brand:hover { color: var(--primary); }

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

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links > li > a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
}

.nav-links > li > a:hover { color: var(--ink); }

.nav-dropdown { position: relative; }

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  background-color: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 8px;
  list-style: none;
  min-width: 240px;
  z-index: 200;
}

.dropdown-menu li a {
  display: block;
  font-size: 14px;
  color: var(--body);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.dropdown-menu li a:hover { background-color: var(--canvas); color: var(--ink); }

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu { display: block; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  background-color: 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-color 0.15s;
  text-decoration: none;
}

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

.btn-secondary {
  display: inline-flex;
  align-items: center;
  background-color: 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;
  text-decoration: none;
}

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

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

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

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

.hero-title {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--ink);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.hero-image-wrap img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.section { padding: 80px 0; }

.section-label {
  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;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-desc {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: 48px;
}

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

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

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

.card {
  background-color: 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-meta {
  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);
  margin-bottom: 8px;
  line-height: 1.35;
}

.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);
}

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

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

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

.info-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.info-card-text {
  font-size: 14px;
  color: var(--body);
  line-height: 1.55;
}

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

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  background-color: var(--surface-strong);
  color: var(--ink);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

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

.article-title {
  font-size: 42px;
  font-weight: 400;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 20px;
  line-height: 1.15;
  max-width: 760px;
}

.article-lead {
  font-size: 18px;
  color: var(--body);
  line-height: 1.6;
  max-width: 660px;
}

.article-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 64px;
  padding: 64px 0;
  align-items: start;
}

.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 16px;
  line-height: 1.25;
}

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

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 10px;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 20px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}

.article-content li { margin-bottom: 6px; }

.article-content figure {
  margin: 32px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.article-content figure img {
  width: 100%;
  max-height: 440px;
  object-fit: cover;
}

.article-content figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 10px 16px;
  background-color: var(--canvas-soft);
}

.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content a:hover { color: var(--primary-active); }

.article-sidebar { position: sticky; top: 80px; }

.sidebar-card {
  background-color: 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;
}

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

.sidebar-card ul li {
  border-bottom: 1px solid var(--hairline-soft);
  padding: 8px 0;
  font-size: 14px;
}

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

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

.tip-box {
  background-color: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 14px;
  color: var(--body);
  line-height: 1.55;
}

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

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

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

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

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

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

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

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

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

.form-submit-msg {
  font-size: 15px;
  color: var(--semantic-success);
  margin-top: 16px;
  display: none;
}

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

.form-loading {
  font-size: 14px;
  color: var(--muted);
  margin-top: 12px;
  display: none;
}

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

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

.page-title {
  font-size: 42px;
  font-weight: 400;
  letter-spacing: -1px;
  color: var(--ink);
  margin-bottom: 16px;
  line-height: 1.15;
}

.page-desc {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  max-width: 560px;
}

.page-updated {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

.page-content {
  padding: 64px 0;
  max-width: 760px;
}

.page-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin: 40px 0 14px;
}

.page-content h2:first-child { margin-top: 0; }

.page-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 8px;
}

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

.page-content ul, .page-content ol {
  margin: 0 0 18px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}

.page-content li { margin-bottom: 6px; }

.page-content a { color: var(--primary); text-decoration: underline; }
.page-content a:hover { color: var(--primary-active); }

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { margin: 0 6px; }

.related-section {
  padding: 64px 0;
  border-top: 1px solid var(--hairline);
}

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

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

.footer-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 12px;
}

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

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

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

.footer-col ul li {
  margin-bottom: 8px;
}

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

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

.footer-contact {
  font-size: 14px;
  color: var(--body);
  margin-bottom: 4px;
}

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding: 20px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

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

.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  max-width: 600px;
  width: calc(100% - 48px);
  z-index: 999;
  display: none;
}

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

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

.cookie-inner p {
  font-size: 14px;
  color: var(--body);
  flex: 1;
  min-width: 200px;
}

.cookie-actions { display: flex; gap: 8px; flex-shrink: 0; }

.disclaimer-box {
  background-color: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 24px;
}

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-title { font-size: 40px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .article-body { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .footer-inner { grid-template-columns: 1fr 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

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

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--surface-card);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px;
    gap: 0;
  }

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

  .nav-links > li > a {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--hairline-soft);
  }

  .nav-dropdown .dropdown-menu {
    position: static;
    display: none;
    border: none;
    border-radius: 0;
    padding: 0 0 0 16px;
  }

  .nav-dropdown.open .dropdown-menu { display: block; }

  .hero-title { font-size: 32px; }
  .section-title { font-size: 28px; }
  .article-title { font-size: 30px; }
  .page-title { font-size: 30px; }
  .card-grid { grid-template-columns: 1fr; }
  .card-grid-2 { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero { padding: 48px 0; }
  .section { padding: 48px 0; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-image-wrap img { height: 220px; }
}