@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;
  --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 {
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  background-color: var(--canvas);
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--ink); }

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

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

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

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

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

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
}

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

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

/* HERO */
.hero {
  padding: 80px 0;
  background: var(--canvas);
}

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

.hero h1 {
  font-size: 72px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -2.16px;
  color: var(--ink);
  max-width: 820px;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  margin-top: 48px;
}

/* SECTION TITLES */
.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;
  line-height: 1.5;
  color: var(--body);
  max-width: 600px;
  margin-bottom: 48px;
}

/* ARTICLES GRID */
.articles-section {
  padding: 80px 0;
}

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

.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;
}

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

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

.article-card-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 10px;
}

.article-card-excerpt {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
  margin-bottom: 16px;
}

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

.read-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
}

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

/* INFO BANDS */
.info-band {
  padding: 80px 0;
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline-soft);
  border-bottom: 1px solid var(--hairline-soft);
}

.info-band-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.info-band-img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  object-fit: cover;
  height: 360px;
}

.info-band h2 {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}

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

.info-band ul {
  list-style: none;
  padding: 0;
  margin-top: 16px;
}

.info-band ul li {
  padding: 10px 0;
  border-bottom: 1px solid var(--hairline-soft);
  font-size: 15px;
  color: var(--body);
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.info-band ul li::before {
  content: "—";
  color: var(--muted);
  flex-shrink: 0;
}

/* FEATURES */
.features-section {
  padding: 80px 0;
}

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

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

.feature-card-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
}

/* CONTACT FORM */
.contact-section {
  padding: 80px 0;
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline-soft);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info h2 {
  font-size: 36px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 16px;
  line-height: 1.5;
  color: var(--body);
  margin-bottom: 32px;
}

.contact-detail {
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--body);
}

.contact-detail strong {
  color: var(--ink);
  font-weight: 600;
}

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

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
  letter-spacing: 0.2px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface-card);
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 16px;
  line-height: 1.5;
  transition: border-color 0.15s;
  outline: none;
  height: 44px;
}

.form-group textarea {
  height: 120px;
  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);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 10px 18px;
  height: 40px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

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

.form-message.success {
  background: #e8f5f0;
  color: var(--semantic-success);
  border: 1px solid #b8ddd0;
  display: block;
}

.form-message.error {
  background: #fdeef2;
  color: var(--semantic-error);
  border: 1px solid #f5c0cc;
  display: block;
}

/* ARTICLE PAGE */
.article-page {
  padding: 64px 0 80px;
}

.article-header {
  max-width: 720px;
  margin: 0 auto 48px;
}

.article-header .hero-badge {
  margin-bottom: 20px;
}

.article-header h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: 20px;
}

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

.article-cover {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  margin-bottom: 64px;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
}

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

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin: 32px 0 12px;
}

.article-body p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  margin-bottom: 20px;
}

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

.article-body li {
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  margin-bottom: 8px;
}

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

.article-body blockquote {
  border-left: 3px solid var(--hairline-strong);
  padding: 16px 24px;
  margin: 32px 0;
  background: var(--canvas-soft);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-body blockquote p {
  font-size: 16px;
  color: var(--muted);
  margin-bottom: 0;
  font-style: italic;
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-updated {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  color: var(--muted);
}

/* RELATED */
.related-section {
  padding: 64px 0 80px;
  border-top: 1px solid var(--hairline-soft);
}

/* PAGE CONTENT */
.page-content {
  padding: 64px 0 80px;
}

.page-content .container {
  max-width: 720px;
}

.page-content h1 {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: 12px;
}

.page-content .page-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--hairline);
}

.page-content h2 {
  font-size: 22px;
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin: 40px 0 12px;
}

.page-content h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 8px;
}

.page-content p {
  font-size: 16px;
  line-height: 1.6;
  color: var(--body);
  margin-bottom: 18px;
}

.page-content ul {
  padding-left: 24px;
  margin-bottom: 18px;
}

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

/* FOOTER */
.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 1fr;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--body);
  margin-top: 12px;
  max-width: 280px;
}

.footer-col h4 {
  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: 10px;
}

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

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

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

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

/* COOKIE BANNER */
#cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 680px;
  background: var(--ink);
  color: var(--canvas);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: none;
}

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

#cookie-banner a {
  color: #a09c92;
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

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

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

.btn-cookie-reject {
  background: transparent;
  color: var(--canvas);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.2);
  cursor: pointer;
  transition: border-color 0.15s;
}

.btn-cookie-reject:hover {
  border-color: rgba(255,255,255,0.4);
}

/* BREADCRUMB */
.breadcrumb {
  padding: 20px 0 0;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--muted-soft);
}

.breadcrumb a {
  color: var(--muted);
  transition: color 0.15s;
}

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

/* DISCLAIMER */
.disclaimer {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-top: 40px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero h1 { font-size: 56px; letter-spacing: -1.5px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 24px;
    gap: 20px;
    z-index: 99;
  }
  .nav-hamburger { display: flex; }
  .hero h1 { font-size: 40px; letter-spacing: -1px; }
  .articles-grid { grid-template-columns: 1fr; }
  .info-band-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  #cookie-banner { flex-direction: column; align-items: flex-start; left: 16px; right: 16px; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; letter-spacing: -0.5px; }
  .section-title { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .article-header h1 { font-size: 32px; }
  .page-content h1 { font-size: 32px; }
}