@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;
  --ink: #26251e;
  --body: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --success: #1f8a65;
  --error: #cf2d56;
  --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 9999px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--canvas);
  color: var(--body);
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--ink); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

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

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

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

.nav-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.3px;
  line-height: 1;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

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

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  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;
  flex-direction: column;
  gap: 0;
  background: var(--canvas);
  border-top: 1px solid var(--hairline);
  padding: 8px 0;
}

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

.nav-mobile a {
  font-size: 15px;
  font-weight: 500;
  color: var(--body);
  padding: 12px 24px;
  border-bottom: 1px solid var(--hairline-soft);
}

.nav-mobile a:hover { color: var(--ink); background: var(--hairline-soft); }

/* ─── HERO ─── */
.hero {
  padding: 80px 0 64px;
  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: 20px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: var(--ink);
  max-width: 720px;
  margin-bottom: 24px;
}

.hero p {
  font-size: 18px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.6;
  margin-bottom: 40px;
}

.hero-image {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  object-fit: cover;
  height: 420px;
  margin-top: 48px;
}

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

.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-subtitle {
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
  line-height: 1.5;
  margin-bottom: 48px;
}

/* ─── CARDS ─── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

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

.card-img {
  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);
  margin-bottom: 10px;
}

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

.card-text {
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
  margin-bottom: 20px;
}

.card-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--hairline-strong);
  padding-bottom: 2px;
}

.card-link:hover { border-color: var(--ink); color: var(--ink); }

/* ─── INFO BLOCKS ─── */
.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.info-card {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.info-card h3 {
  font-size: 22px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.11px;
  margin-bottom: 12px;
  line-height: 1.3;
}

.info-card p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.6;
}

/* ─── ARTICLE PAGE ─── */
.article-header {
  padding: 80px 0 48px;
  border-bottom: 1px solid var(--hairline);
  max-width: 760px;
}

.article-meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
  display: flex;
  gap: 16px;
  align-items: center;
}

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

.article-desc {
  font-size: 18px;
  color: var(--body);
  line-height: 1.6;
}

.article-image {
  width: 100%;
  height: 460px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
  margin: 48px 0;
}

.article-body {
  max-width: 720px;
  padding-bottom: 80px;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.325px;
  line-height: 1.25;
  margin: 40px 0 16px;
}

.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin: 28px 0 12px;
  line-height: 1.35;
}

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

.article-body ul, .article-body ol {
  margin: 16px 0 20px 20px;
  list-style: disc;
}

.article-body ol { list-style: decimal; }

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

.article-body a {
  color: var(--ink);
  border-bottom: 1px solid var(--hairline-strong);
}

.article-body a:hover { border-color: var(--ink); }

.article-body blockquote {
  border-left: 3px solid var(--hairline-strong);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--surface-card);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-body blockquote p {
  font-size: 17px;
  color: var(--ink);
  font-style: italic;
  margin: 0;
}

.article-caption {
  font-size: 13px;
  color: var(--muted);
  margin-top: -32px;
  margin-bottom: 40px;
}

/* ─── FORM ─── */
.form-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--hairline);
}

.form-wrap {
  max-width: 600px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--ink);
  line-height: 1.5;
  transition: border-color 0.15s;
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted-soft);
}

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

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

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  line-height: 1;
  height: 40px;
  transition: background 0.15s;
}

.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.form-status {
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  display: none;
}

.form-status.success {
  display: block;
  background: #d4f4e8;
  color: var(--success);
  border: 1px solid #a8e4cc;
}

.form-status.loading {
  display: block;
  background: var(--hairline-soft);
  color: var(--muted);
  border: 1px solid var(--hairline);
}

/* ─── PAGE CONTENT ─── */
.page-header {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--hairline);
  max-width: 760px;
}

.page-title {
  font-size: 42px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}

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

.page-body {
  max-width: 760px;
  padding: 48px 0 80px;
}

.page-body h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--ink);
  margin: 36px 0 12px;
  line-height: 1.3;
}

.page-body p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 16px;
}

.page-body ul {
  margin: 12px 0 20px 20px;
  list-style: disc;
}

.page-body li {
  font-size: 15px;
  color: var(--body);
  line-height: 1.6;
  margin-bottom: 6px;
}

.page-updated {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 40px;
}

/* ─── 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: 260px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }

.footer-col ul li a {
  font-size: 14px;
  color: var(--body);
  line-height: 1.4;
}

.footer-col ul li 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);
}

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

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

/* ─── COOKIE BANNER ─── */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--canvas);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  max-width: 680px;
  width: calc(100% - 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  z-index: 999;
  box-shadow: none;
  border: 1px solid rgba(255,255,255,0.1);
}

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

.cookie-banner a {
  color: #a09c92;
  border-bottom: 1px solid #a09c92;
}

.cookie-banner a:hover { color: var(--canvas); border-color: var(--canvas); }

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

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

.btn-cookie-reject {
  background: transparent;
  color: var(--canvas);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.25);
  cursor: pointer;
  font-family: var(--font-sans);
  white-space: nowrap;
}

.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject:hover { border-color: rgba(255,255,255,0.5); }

/* ─── ABOUT PAGE CONTACT ─── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-image {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--hairline);
}

.about-text h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.2;
}

.about-text p {
  font-size: 15px;
  color: var(--body);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ─── BREADCRUMB ─── */
.breadcrumb {
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.breadcrumb ul {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

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

.breadcrumb li a {
  color: var(--muted);
}

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

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

.breadcrumb li.current { color: var(--body); }

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

.related-section h2 {
  font-size: 26px;
  font-weight: 400;
  color: var(--ink);
  letter-spacing: -0.325px;
  margin-bottom: 32px;
}

/* ─── NOTICE BOX ─── */
.notice-box {
  background: var(--surface-card);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--ink);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 24px 0;
}

.notice-box p {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
  line-height: 1.5;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero h1 { font-size: 36px; letter-spacing: -0.8px; }
  .hero p { font-size: 16px; }
  .hero-image { height: 240px; }

  .section-title { font-size: 28px; }
  .article-title { font-size: 30px; }
  .page-title { font-size: 30px; }

  .card-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom { flex-direction: column; align-items: flex-start; }

  .cookie-banner { flex-direction: column; align-items: flex-start; }

  .article-image { height: 260px; }
  .about-image { height: 240px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  .cookie-banner { bottom: 0; border-radius: var(--radius-lg) var(--radius-lg) 0 0; width: 100%; }
}