@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;
  --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;
  --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html { scroll-behavior: smooth; }
body { background: var(--canvas); color: var(--body); font-family: var(--font-sans); font-size: 16px; line-height: 1.5; }

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; }

/* 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;
  gap: 32px;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--body);
  line-height: 1.4;
}
.nav-links a:hover { color: var(--ink); }
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: all 0.2s;
}
.nav-mobile {
  display: none;
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 16px 24px;
}
.nav-mobile.open { display: block; }
.nav-mobile ul { list-style: none; display: flex; flex-direction: column; gap: 0; }
.nav-mobile ul li a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--body);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-mobile ul li a:hover { color: var(--ink); }

/* HERO */
.hero {
  padding: 80px 0 64px;
  border-bottom: 1px solid var(--hairline);
}
.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: 9999px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 64px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--ink);
  max-width: 820px;
  margin-bottom: 24px;
}
.hero-desc {
  font-size: 18px;
  color: var(--body);
  max-width: 580px;
  line-height: 1.6;
  margin-bottom: 40px;
}
.hero-image {
  margin-top: 48px;
  border-radius: 12px;
  border: 1px solid var(--hairline);
  overflow: hidden;
  max-height: 440px;
  object-fit: cover;
  width: 100%;
}

/* SECTIONS */
.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);
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--body);
  max-width: 600px;
  line-height: 1.6;
  margin-bottom: 48px;
}

/* ARTICLE CARDS */
.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: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.article-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.article-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.article-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
  margin-bottom: 10px;
}
.article-card p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 20px;
}
.article-card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.article-card-link:hover { color: var(--primary-active); }

/* INFO BAND */
.info-band {
  background: var(--surface-card);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 80px 0;
}
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.info-grid-text h2 {
  font-size: 36px;
  font-weight: 400;
  letter-spacing: -0.72px;
  color: var(--ink);
  margin-bottom: 20px;
  line-height: 1.2;
}
.info-grid-text p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}
.info-grid-image {
  border-radius: 12px;
  border: 1px solid var(--hairline);
  overflow: hidden;
  height: 320px;
  object-fit: cover;
  width: 100%;
}

/* FEATURE LIST */
.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.feature-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline-soft);
  font-size: 15px;
  color: var(--body);
  line-height: 1.5;
}
.feature-list li:last-child { border-bottom: none; }
.feature-list li::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 7px;
  flex-shrink: 0;
}

/* ARTICLE PAGE */
.article-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}
.article-header .article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.article-header .article-tag {
  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: 9999px;
}
.article-header .article-date {
  font-size: 13px;
  color: var(--muted);
}
.article-header h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -1px;
  color: var(--ink);
  line-height: 1.15;
  max-width: 800px;
  margin-bottom: 20px;
}
.article-header .article-intro {
  font-size: 18px;
  color: var(--body);
  max-width: 680px;
  line-height: 1.6;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  padding: 64px 0 80px;
  align-items: start;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.325px;
  color: var(--ink);
  line-height: 1.25;
  margin: 40px 0 16px;
}
.article-content h2:first-child { margin-top: 0; }
.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
}
.article-content p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}
.article-content ul, .article-content ol {
  margin: 0 0 16px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}
.article-content figure {
  margin: 32px 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.article-content figure img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}
.article-content figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 10px 16px;
  background: var(--canvas-soft);
  border-top: 1px solid var(--hairline);
}
.article-content .info-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 24px 0;
}
.article-content .info-box p {
  margin: 0;
  font-size: 15px;
  color: var(--body);
}
.article-content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* TABLE */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-content th {
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline-strong);
}
.article-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--hairline-soft);
  color: var(--body);
}
.article-content tr:last-child td { border-bottom: none; }

/* SIDEBAR */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  padding: 24px;
}
.sidebar-card h4 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.sidebar-toc { list-style: none; display: flex; flex-direction: column; gap: 0; }
.sidebar-toc li a {
  display: block;
  padding: 9px 0;
  font-size: 14px;
  color: var(--body);
  border-bottom: 1px solid var(--hairline-soft);
  line-height: 1.4;
}
.sidebar-toc li:last-child a { border-bottom: none; }
.sidebar-toc li a:hover { color: var(--ink); }
.sidebar-related { list-style: none; display: flex; flex-direction: column; gap: 0; }
.sidebar-related li a {
  display: block;
  padding: 9px 0;
  font-size: 14px;
  color: var(--body);
  border-bottom: 1px solid var(--hairline-soft);
  line-height: 1.4;
}
.sidebar-related li:last-child a { border-bottom: none; }
.sidebar-related li a:hover { color: var(--primary); }

/* PAGES (about, privacy, terms) */
.page-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
}
.page-header h1 {
  font-size: 48px;
  font-weight: 400;
  letter-spacing: -1px;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 16px;
}
.page-header p {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.6;
}
.page-content {
  padding: 64px 0 80px;
  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 p {
  font-size: 16px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 16px;
}
.page-content ul {
  margin: 0 0 16px 20px;
  color: var(--body);
  font-size: 16px;
  line-height: 1.7;
}
.page-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }

/* FORM */
.contact-section { padding: 80px 0; }
.contact-section .section-title { margin-bottom: 8px; }
.contact-section .section-desc { margin-bottom: 40px; }
.contact-form {
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}
.form-group input,
.form-group textarea {
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 16px;
  font-family: var(--font-sans);
  color: var(--ink);
  outline: none;
  transition: border-color 0.15s;
  height: 44px;
}
.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); }
.form-error-msg { font-size: 13px; color: var(--error); }
.btn-submit {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  height: 44px;
  align-self: flex-start;
  transition: background 0.15s;
  font-family: var(--font-sans);
}
.btn-submit:hover { background: var(--primary-active); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.form-success {
  display: none;
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--success);
  border-radius: 8px;
  padding: 16px 20px;
  font-size: 15px;
  color: var(--body);
}
.form-success.visible { display: block; }

/* 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;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--body);
  line-height: 1.6;
  margin-top: 12px;
  max-width: 280px;
}
.footer-col h5 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0; }
.footer-col ul li a {
  display: block;
  padding: 6px 0;
  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;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 13px; color: var(--muted); }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 20px 24px;
  z-index: 1000;
  display: none;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.cookie-banner.visible { display: flex; }
.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  width: 100%;
}
.cookie-banner p {
  font-size: 14px;
  line-height: 1.5;
  color: #cfcdc4;
  flex: 1;
  min-width: 260px;
}
.cookie-banner 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: 9px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
}
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject {
  background: transparent;
  color: #cfcdc4;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-sans);
}
.btn-cookie-reject:hover { border-color: rgba(255,255,255,0.4); color: var(--canvas); }

/* BREADCRUMB */
.breadcrumb {
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline-soft);
  background: var(--canvas-soft);
}
.breadcrumb-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.breadcrumb-list li + li::before { content: '/'; color: var(--hairline-strong); }
.breadcrumb-list a { color: var(--muted); }
.breadcrumb-list a:hover { color: var(--ink); }
.breadcrumb-list .current { color: var(--body); }

/* DISCLAIMER */
.disclaimer-box {
  background: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 48px 0 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .info-grid-image { order: -1; }
}
@media (max-width: 768px) {
  .hero h1 { font-size: 40px; letter-spacing: -0.8px; }
  .hero-desc { font-size: 16px; }
  .section-title { font-size: 28px; }
  .article-header h1 { font-size: 32px; letter-spacing: -0.5px; }
  .page-header h1 { font-size: 32px; letter-spacing: -0.5px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .articles-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .info-grid { gap: 24px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero { padding: 48px 0 40px; }
  .section { padding: 48px 0; }
  .hero h1 { font-size: 30px; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}