*, *::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;
  --success: #1f8a65;
  --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: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

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

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

.nav-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 40px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  flex-shrink: 0;
}

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

.nav-menu {
  display: flex;
  gap: 28px;
  margin-left: auto;
}

.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  line-height: 1.4;
  transition: color 0.15s;
}

.nav-menu a:hover { color: var(--ink); }

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

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

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

.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: clamp(36px, 5vw, 72px);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -2px;
  max-width: 800px;
  margin-bottom: 24px;
}

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

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

.hero-image {
  margin-top: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
  max-height: 480px;
}

.hero-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.section {
  padding: 80px 0;
  border-bottom: 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;
  color: var(--ink);
  letter-spacing: -0.72px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--body);
  max-width: 620px;
  line-height: 1.6;
  margin-bottom: 48px;
}

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

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.15s;
}

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

.card-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface-strong);
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

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

.card-body {
  font-size: 14px;
  color: var(--body);
  line-height: 1.55;
  margin-bottom: 16px;
}

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

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

.card-image {
  margin-bottom: 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

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

.article-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

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

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 28px;
  margin-bottom: 12px;
}

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

.article-body ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 20px;
}

.article-body ul li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 6px;
}

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

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

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

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

.article-img figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 12px 16px;
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline);
}

.sidebar {
  position: sticky;
  top: 88px;
}

.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
}

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

.sidebar-links li {
  border-bottom: 1px solid var(--hairline-soft);
  padding: 10px 0;
}

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

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

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

.toc { counter-reset: toc-counter; }

.toc li { counter-increment: toc-counter; }

.toc li::before {
  content: counter(toc-counter) ". ";
  color: var(--muted-soft);
  font-size: 13px;
}

.fact-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--ink);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
}

.fact-box p {
  margin-bottom: 0 !important;
  font-size: 15px;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.specs-table th {
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 600;
  text-align: left;
  padding: 10px 14px;
  border: 1px solid var(--hairline);
}

.specs-table td {
  padding: 10px 14px;
  border: 1px solid var(--hairline);
  color: var(--body);
  background: var(--surface-card);
  vertical-align: top;
}

.specs-table tr:nth-child(even) td { background: var(--canvas-soft); }

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

.page-hero-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.page-hero-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}

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

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.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: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  height: 44px;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  transition: border-color 0.15s;
  outline: none;
}

.form-group textarea {
  height: auto;
  min-height: 120px;
  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(--error);
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  letter-spacing: 0;
}

.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

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

.form-success {
  display: none;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--success);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 15px;
  color: var(--ink);
  margin-top: 16px;
}

.info-list li {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--hairline-soft);
  font-size: 15px;
  color: var(--body);
}

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

.info-list strong { color: var(--ink); min-width: 80px; }

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

.prose h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 28px;
  margin-bottom: 10px;
}

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

.prose ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 18px;
}

.prose ul li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 6px;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

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

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

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

.footer-col ul li {
  margin-bottom: 10px;
}

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

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
  font-size: 13px;
  color: var(--muted);
}

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

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

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

.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 480px;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: 0 2px 12px rgba(38,37,30,0.08);
  z-index: 999;
  display: none;
}

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

.cookie-banner p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 16px;
}

.cookie-banner a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }

.cookie-actions {
  display: flex;
  gap: 10px;
}

.btn-cookie-accept {
  background: var(--ink);
  color: var(--canvas);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: opacity 0.15s;
}

.btn-cookie-accept:hover { opacity: 0.85; }

.btn-cookie-reject {
  background: var(--surface-card);
  color: var(--body);
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--hairline-strong);
  cursor: pointer;
  transition: border-color 0.15s;
}

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

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
}

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

.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: 1.5;
  margin-top: 40px;
}

@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-grid { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a { padding: 12px 24px; }
  .nav-toggle { display: flex; }
  .site-header { position: sticky; }
  .hero { padding: 48px 0; }
  .section { padding: 48px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
  .card-grid-2 { grid-template-columns: 1fr; }
  .hero-title { letter-spacing: -1px; }
}