@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --success: #1f8a65;
  --error: #cf2d56;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--canvas);
  color: var(--body);
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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;
}

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

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

.nav-brand {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  text-decoration: none;
}

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

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

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  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: all 0.2s;
}

/* HERO */
.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);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -1.5px;
  line-height: 1.1;
  max-width: 700px;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 18px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: 32px;
}

.hero-img-wrap {
  margin-top: 48px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--hairline);
}

.hero-img-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

/* SECTION */
.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;
  color: var(--ink);
  letter-spacing: -0.72px;
  line-height: 1.2;
  margin-bottom: 16px;
}

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

/* ARTICLE CARDS */
.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: 12px;
  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;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

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

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

.article-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

/* FEATURE BAND */
.feature-band {
  background: var(--surface-card);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 80px 0;
}

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

.feature-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
}

.feature-card-icon {
  font-size: 24px;
  margin-bottom: 12px;
}

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

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

/* ARTICLE PAGE */
.article-page {
  padding: 60px 0 80px;
}

.article-page .container {
  max-width: 780px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--primary);
}

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

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

.article-page .lead {
  font-size: 18px;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 36px;
  border-left: 3px solid var(--primary);
  padding-left: 20px;
}

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

.article-page h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 32px;
  margin-bottom: 12px;
}

.article-page p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.75;
  margin-bottom: 20px;
}

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

.article-page li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 6px;
}

.article-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--hairline);
  margin-bottom: 12px;
}

.article-img-caption {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  margin-bottom: 36px;
}

.article-info-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 24px;
  margin: 32px 0;
}

.article-info-box-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.article-info-box p {
  font-size: 15px;
  margin-bottom: 8px;
}

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

.article-refs-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  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(--muted);
  line-height: 1.5;
  margin-bottom: 8px;
  padding-left: 16px;
  position: relative;
}

.article-refs li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary);
}

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

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

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

.breadcrumb-sep {
  color: var(--muted-soft);
}

/* DIVIDER */
.divider {
  height: 1px;
  background: var(--hairline);
}

/* PAGE CONTENT */
.page-content {
  padding: 60px 0 80px;
}

.page-content .container {
  max-width: 820px;
}

.page-title {
  font-size: 42px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 12px;
}

.page-updated {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 36px;
}

.page-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 36px;
  margin-bottom: 12px;
}

.page-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.75;
  margin-bottom: 16px;
}

.page-content ul {
  padding-left: 22px;
  margin-bottom: 16px;
}

.page-content li {
  font-size: 16px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 6px;
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
  margin-top: 48px;
}

.contact-info-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
}

.contact-info-text {
  font-size: 15px;
  color: var(--body);
  line-height: 1.65;
  margin-bottom: 20px;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--body);
}

.contact-detail strong {
  color: var(--ink);
  min-width: 60px;
}

.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);
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
}

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

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

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  height: 40px;
  transition: background 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

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

.form-message {
  display: none;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-top: 16px;
}

.form-message.success {
  background: #e6f4ef;
  color: var(--success);
  border: 1px solid #b8ddd2;
  display: block;
}

.form-message.error {
  background: #fce8ec;
  color: var(--error);
  border: 1px solid #f0b8c4;
  display: block;
}

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

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

.footer-brand-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

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

.footer-col-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 16px;
  letter-spacing: 0.2px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

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

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

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}

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

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 20px 24px;
  z-index: 999;
  display: none;
  border-top: 2px solid var(--primary);
}

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

.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-text {
  font-size: 14px;
  color: #d4d2cb;
  line-height: 1.55;
  flex: 1;
  min-width: 260px;
}

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

.cookie-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.btn-cookie-accept {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 8px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  height: 36px;
}

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

.btn-cookie-reject {
  background: transparent;
  color: #a09c92;
  border: 1px solid #4a4840;
  border-radius: 8px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  height: 36px;
}

.btn-cookie-reject:hover {
  color: var(--canvas);
  border-color: #807d72;
}

/* ABOUT PAGE */
.about-hero {
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--hairline);
}

.about-hero h1 {
  font-size: 42px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
  max-width: 620px;
}

.about-hero p {
  font-size: 18px;
  color: var(--body);
  line-height: 1.65;
  max-width: 600px;
}

.about-content {
  padding: 60px 0 80px;
}

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

.about-block h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
}

.about-block p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* UTILITIES */
.text-muted {
  color: var(--muted);
}

.mt-4 { margin-top: 16px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-8 { margin-bottom: 32px; }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero h1 { font-size: 44px; }
  .articles-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .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: 16px 24px;
    gap: 16px;
  }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 34px; letter-spacing: -0.5px; }
  .hero-desc { font-size: 16px; }
  .hero-img-wrap img { height: 260px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 28px; }
  .articles-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .article-page h1 { font-size: 30px; }
  .article-img { height: 260px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-hero h1 { font-size: 30px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}