*, *::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;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 9999px;
}

html {
  font-size: 16px;
  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: var(--ink);
  text-decoration: none;
}

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

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

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.5px;
}

h1 { font-size: 36px; letter-spacing: -0.72px; }
h2 { font-size: 26px; letter-spacing: -0.325px; }
h3 { font-size: 22px; letter-spacing: -0.11px; }
h4 { font-size: 18px; font-weight: 600; letter-spacing: 0; }

p { line-height: 1.6; color: var(--body); }

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

.site-nav {
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-logo {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  white-space: nowrap;
  flex-shrink: 0;
}

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

.nav-links {
  list-style: none;
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.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, background 0.15s;
  line-height: 1.4;
  display: block;
}

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

.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;
}

.hero {
  padding: 80px 0 60px;
  border-bottom: 1px solid var(--hairline);
}

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

.hero-label {
  display: inline-block;
  background: var(--surface-strong);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 400;
  letter-spacing: -1.5px;
  line-height: 1.1;
  color: var(--ink);
  max-width: 760px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 18px;
  color: var(--body);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 40px;
}

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

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

.section {
  padding: 80px 0;
}

.section-label {
  display: inline-block;
  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;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 12px;
}

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

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

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

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

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

.article-card-body {
  padding: 24px;
}

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

.article-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.1px;
  margin-bottom: 10px;
  line-height: 1.35;
}

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

.article-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
}

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

.features-band {
  background: var(--surface-card);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.feature-item {
  padding: 40px 32px;
  border-right: 1px solid var(--hairline);
}

.feature-item:last-child {
  border-right: none;
}

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

.feature-item h3 {
  font-size: 20px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}

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

.article-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  align-items: start;
}

.article-main {
  padding: 60px 0;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

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

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

.article-main h1 {
  font-size: 42px;
  letter-spacing: -1px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 20px;
  line-height: 1.15;
}

.article-lead {
  font-size: 18px;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 32px;
}

.article-body h2 {
  font-size: 24px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.3px;
  margin: 48px 0 16px;
}

.article-body h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.1px;
  margin: 32px 0 12px;
}

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

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

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

.article-img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  margin: 32px 0;
}

.article-caption {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
  margin-top: -20px;
  margin-bottom: 32px;
}

.article-refs {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--hairline);
}

.article-refs h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.article-refs ul {
  list-style: none;
  padding: 0;
}

.article-refs li {
  font-size: 13px;
  color: var(--body);
  margin-bottom: 8px;
  line-height: 1.5;
}

.article-refs a {
  color: var(--primary);
  font-size: 13px;
}

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

.sidebar {
  padding: 60px 0;
  position: sticky;
  top: 80px;
}

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

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

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

.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;
  font-weight: 500;
}

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

.contact-form-section {
  background: var(--surface-card);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.contact-form-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 80px 24px;
}

.contact-form-inner h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.contact-form-inner p {
  font-size: 16px;
  color: var(--body);
  margin-bottom: 40px;
  line-height: 1.6;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0.02px;
}

.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;
  font-size: 16px;
  font-family: inherit;
  color: var(--ink);
  line-height: 1.5;
  height: 44px;
  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::placeholder,
.form-group textarea::placeholder {
  color: var(--muted-soft);
}

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

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

.form-status.success {
  background: #e6f4ef;
  color: var(--success);
  border: 1px solid #b3ddd0;
  display: block;
}

.form-status.error {
  background: #fde8ed;
  color: var(--error);
  border: 1px solid #f5b8c5;
  display: block;
}

.page-header {
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--hairline);
}

.page-body {
  padding: 60px 0;
}

.page-body h2 {
  font-size: 22px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.2px;
  margin: 40px 0 12px;
}

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

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

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

.disclaimer-band {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 32px 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 9999;
  flex-wrap: wrap;
}

.cookie-banner p {
  font-size: 14px;
  color: var(--canvas);
  flex: 1;
  line-height: 1.5;
  margin: 0;
}

.cookie-banner a {
  color: #f7f7f4;
  text-decoration: underline;
}

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

.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}

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

.btn-cookie-reject {
  background: transparent;
  color: var(--canvas);
  border: 1px solid rgba(247,247,244,0.3);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s;
}

.btn-cookie-reject:hover { border-color: rgba(247,247,244,0.6); }

.site-footer {
  background: 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;
  gap: 48px;
}

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

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

.footer-heading {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 16px;
  letter-spacing: 0.02px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
}

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

.footer-col a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  transition: color 0.15s;
}

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

.footer-text {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 6px;
}

.footer-bottom {
  border-top: 1px solid var(--hairline);
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

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

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

@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-item:nth-child(2) { border-right: none; }
  .feature-item:nth-child(3) { border-top: 1px solid var(--hairline); border-right: 1px solid var(--hairline); }
  .article-layout { grid-template-columns: 1fr; gap: 0; }
  .sidebar { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 36px; letter-spacing: -0.72px; }
  .hero-sub { font-size: 16px; }
  .hero-image-wrap { max-height: 260px; }
  .hero-image-wrap img { height: 260px; }
  .section-title { font-size: 28px; }
  .articles-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-item { border-right: none; border-bottom: 1px solid var(--hairline); }
  .feature-item:last-child { border-bottom: none; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 12px 24px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .nav-links li a { padding: 10px 12px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .article-main { padding: 40px 0; }
  .article-main h1 { font-size: 30px; letter-spacing: -0.5px; }
}

@media (max-width: 480px) {
  .container, .hero-inner, .article-layout, .footer-inner, .footer-bottom { padding: 0 16px; }
  .hero { padding: 48px 0 40px; }
  .section { padding: 56px 0; }
  .cookie-banner { flex-direction: column; align-items: flex-start; }
}