@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;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
}

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-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); text-decoration: none; transition: opacity 0.15s ease; }
a:hover { opacity: 0.7; }

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

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

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

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.nav-logo 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);
  line-height: 1.4;
}

.nav-links a:hover { color: var(--ink); opacity: 1; }

.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-color: var(--ink);
  border-radius: 2px;
  transition: all 0.2s ease;
}

.nav-mobile {
  display: none;
  background-color: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  padding: 16px 24px;
}

.nav-mobile.open { display: block; }

.nav-mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-mobile a {
  font-size: 15px;
  font-weight: 500;
  color: var(--body);
}

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

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

.hero-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  background-color: var(--surface-strong);
  border-radius: var(--rounded-pill);
  padding: 4px 10px;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 56px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.4px;
  color: var(--ink);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.6;
  color: var(--body);
  max-width: 480px;
}

.hero-image {
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--hairline);
}

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

/* SECTION HEADINGS */
.section { padding: 80px 0; }
.section + .section { border-top: 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: 12px;
}

.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: 560px;
}

/* CARD GRID */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

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

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

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

.card-body { padding: 24px; }

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

.card-title {
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 8px;
}

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

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

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-top: 12px;
}

.card-link:hover { opacity: 0.8; }

/* FEATURED SECTION */
.featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-top: 48px;
}

.featured-card {
  background-color: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}

.featured-card-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.featured-card-body { padding: 32px; }

.featured-card-title {
  font-size: 26px;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.325px;
  color: var(--ink);
  margin-bottom: 12px;
}

.side-cards { display: flex; flex-direction: column; gap: 24px; }

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

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

.side-card-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 8px;
}

.side-card-excerpt {
  font-size: 13px;
  line-height: 1.5;
  color: var(--body);
}

/* INFO STRIP */
.info-strip {
  background-color: var(--surface-card);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 40px 0;
}

.info-strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.info-item-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.88px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.info-item-value {
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.11px;
  color: var(--ink);
  margin-bottom: 4px;
}

.info-item-desc {
  font-size: 14px;
  color: var(--body);
}

/* ARTICLE PAGE */
.article-header { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }

.article-header .section-label { margin-bottom: 16px; }

.article-title {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.2px;
  color: var(--ink);
  max-width: 800px;
  margin-bottom: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: var(--muted);
}

.article-meta-sep { color: var(--hairline-strong); }

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 64px;
  padding: 64px 0;
}

.article-body { min-width: 0; }

.article-body p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  margin-bottom: 24px;
  font-weight: 400;
  letter-spacing: 0.08px;
}

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

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 32px;
  margin-bottom: 12px;
  line-height: 1.4;
}

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

.article-body li {
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  margin-bottom: 8px;
}

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

.article-body figcaption {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  margin-top: -24px;
  margin-bottom: 32px;
}

.article-body a { color: var(--primary); }
.article-body a:hover { opacity: 0.75; }

.article-body blockquote {
  border-left: 3px solid var(--hairline-strong);
  padding-left: 20px;
  margin: 32px 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--body);
  font-style: italic;
}

.article-sidebar { position: sticky; top: 88px; height: fit-content; }

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

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

.sidebar-link-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }

.sidebar-link-list li { border-bottom: 1px solid var(--hairline-soft); padding-bottom: 12px; }
.sidebar-link-list li:last-child { border-bottom: none; padding-bottom: 0; }

.sidebar-link-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.4;
  display: block;
  margin-bottom: 2px;
}

.sidebar-link-meta { font-size: 12px; color: var(--muted); }

/* PAGE CONTENT (about, privacy, terms) */
.page-header { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }

.page-title {
  font-size: 48px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.2px;
  color: var(--ink);
  margin-bottom: 16px;
}

.page-subtitle {
  font-size: 18px;
  color: var(--body);
  max-width: 600px;
  line-height: 1.6;
}

.page-content { padding: 64px 0; max-width: 760px; }

.page-content p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  margin-bottom: 20px;
  letter-spacing: 0.08px;
}

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

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

.page-content ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

.page-content li {
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  margin-bottom: 6px;
}

/* CONTACT FORM */
.contact-form-wrap {
  background-color: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  padding: 40px;
  max-width: 600px;
  margin-top: 48px;
}

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

.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-submit {
  background-color: var(--ink);
  color: var(--canvas);
  border: none;
  border-radius: var(--rounded-md);
  padding: 12px 20px;
  height: 44px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-submit:hover { opacity: 0.8; }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.form-success {
  display: none;
  background-color: #e8f5f0;
  border: 1px solid #b3ddd1;
  border-radius: var(--rounded-md);
  padding: 16px 20px;
  font-size: 14px;
  color: var(--semantic-success);
  margin-top: 16px;
}

.form-success.show { display: block; }

/* FOOTER */
.site-footer {
  background-color: 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: 48px;
  margin-bottom: 48px;
}

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

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--body);
  max-width: 240px;
}

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

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

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

.footer-links a:hover { color: var(--ink); opacity: 1; }

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

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

.footer-legal {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-legal a { font-size: 13px; color: var(--muted); }
.footer-legal a:hover { color: var(--ink); opacity: 1; }

/* COOKIE BANNER */
.cookie-banner {
  display: none;
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 48px);
  max-width: 680px;
  background-color: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-lg);
  padding: 20px 24px;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(38, 37, 30, 0.08);
}

.cookie-banner.show { display: flex; align-items: flex-start; gap: 20px; }

.cookie-banner-text { flex: 1; }

.cookie-banner-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.cookie-banner-desc {
  font-size: 13px;
  color: var(--body);
  line-height: 1.5;
}

.cookie-banner-desc a { color: var(--primary); }

.cookie-banner-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  align-items: center;
}

.btn-cookie-accept {
  background-color: var(--ink);
  color: var(--canvas);
  border: none;
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.btn-cookie-accept:hover { opacity: 0.8; }

.btn-cookie-reject {
  background-color: transparent;
  color: var(--body);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--rounded-md);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

/* BREADCRUMB */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); opacity: 1; }
.breadcrumb-sep { color: var(--hairline-strong); }
.breadcrumb-current { color: var(--body); }

/* TABLE OF CONTENTS */
.toc {
  background-color: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-md);
  padding: 20px 24px;
  margin-bottom: 32px;
}

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

.toc-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }

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

.toc-list a:hover { color: var(--primary); opacity: 1; }

/* DISCLAIMER */
.disclaimer {
  background-color: var(--canvas-soft);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-md);
  padding: 16px 20px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 48px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero-title { font-size: 44px; }
  .article-layout { grid-template-columns: 1fr; gap: 40px; }
  .article-sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .info-strip-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero { padding: 48px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; }
  .hero-title { font-size: 32px; letter-spacing: -0.5px; }
  .hero-desc { font-size: 16px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 28px; }
  .card-grid { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .article-title { font-size: 32px; }
  .page-title { font-size: 32px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .info-strip-grid { grid-template-columns: repeat(2, 1fr); }
  .cookie-banner.show { flex-direction: column; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .info-strip-grid { grid-template-columns: 1fr; }
}