@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;
  --hairline: #e6e5e0;
  --hairline-soft: #efeee8;
  --hairline-strong: #cfcdc4;
  --ink: #26251e;
  --body: #5a5852;
  --body-strong: #26251e;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --on-primary: #ffffff;
  --success: #1f8a65;
  --error: #cf2d56;
  --font-main: '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-xl: 16px;
  --radius-pill: 9999px;
}

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

a { color: inherit; text-decoration: none; }
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);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
}
.site-nav .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-brand { font-family: var(--font-main); font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.5px; }
.nav-brand 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; transition: color 0.15s; }
.nav-links a:hover { 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; }
.nav-mobile { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--surface-card); border-bottom: 1px solid var(--hairline); padding: 16px 24px; z-index: 99; }
.nav-mobile.open { display: block; }
.nav-mobile ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.nav-mobile ul a { font-size: 15px; font-weight: 500; color: var(--ink); }

/* HERO */
.hero { padding: 80px 0; }
.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: var(--surface-strong); border-radius: var(--radius-pill); padding: 4px 10px; margin-bottom: 24px; }
.hero h1 { font-size: 48px; font-weight: 400; line-height: 1.1; letter-spacing: -1.2px; color: var(--ink); margin-bottom: 24px; }
.hero p { font-size: 16px; color: var(--body); line-height: 1.6; margin-bottom: 0; }
.hero-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); }
.hero-image img { width: 100%; height: 340px; object-fit: cover; }

/* SECTIONS */
.section { padding: 80px 0; }
.section-alt { background: var(--surface-card); }
.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-lead { font-size: 16px; color: var(--body); max-width: 600px; margin-bottom: 48px; }

/* CARDS */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 24px; }
.card-icon { width: 40px; height: 40px; border-radius: var(--radius-md); background: var(--surface-strong); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; font-size: 20px; }
.card h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin-bottom: 8px; line-height: 1.4; }
.card p { font-size: 14px; color: var(--body); line-height: 1.5; }

/* ARTICLES GRID */
.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; display: flex; flex-direction: column; }
.article-card-image { height: 200px; overflow: hidden; }
.article-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.article-card:hover .article-card-image img { transform: scale(1.03); }
.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: 8px; }
.article-card h3 { font-size: 18px; font-weight: 600; color: var(--ink); line-height: 1.4; margin-bottom: 8px; }
.article-card p { font-size: 14px; color: var(--body); line-height: 1.5; flex: 1; }
.article-card-meta { margin-top: 16px; font-size: 13px; color: var(--muted); padding-top: 16px; border-top: 1px solid var(--hairline-soft); }
.article-link { display: inline-block; margin-top: 12px; font-size: 14px; font-weight: 500; color: var(--primary); }
.article-link:hover { color: var(--primary-active); }

/* ARTICLE PAGE */
.article-hero { padding: 64px 0 0; }
.article-hero-image { margin-top: 40px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); }
.article-hero-image img { width: 100%; height: 420px; object-fit: cover; }
.article-content { padding: 64px 0 80px; }
.article-body { max-width: 740px; }
.article-breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 24px; }
.article-breadcrumb a { color: var(--muted); }
.article-breadcrumb a:hover { color: var(--ink); }
.article-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); background: var(--surface-strong); border-radius: var(--radius-pill); padding: 4px 10px; display: inline-block; margin-bottom: 16px; }
.article-body h1 { font-size: 40px; font-weight: 400; line-height: 1.15; letter-spacing: -1px; color: var(--ink); margin-bottom: 16px; }
.article-body .article-date { font-size: 13px; color: var(--muted); margin-bottom: 32px; }
.article-body h2 { font-size: 26px; font-weight: 400; line-height: 1.25; letter-spacing: -0.325px; color: var(--ink); margin: 40px 0 16px; }
.article-body h3 { font-size: 20px; font-weight: 600; line-height: 1.3; color: var(--ink); margin: 28px 0 12px; }
.article-body p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body li { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 8px; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body a { color: var(--primary); text-decoration: underline; text-decoration-color: transparent; transition: text-decoration-color 0.15s; }
.article-body a:hover { text-decoration-color: var(--primary); }
.info-box { background: var(--surface-card); border: 1px solid var(--hairline); border-left: 3px solid var(--primary); border-radius: var(--radius-md); padding: 20px 24px; margin: 32px 0; }
.info-box p { margin-bottom: 0; font-size: 15px; }
.article-references { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--hairline); }
.article-references h4 { font-size: 13px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.article-references ul { list-style: none; padding: 0; }
.article-references li { font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.article-references a { color: var(--primary); }

/* CONTACT FORM */
.contact-form { max-width: 560px; }
.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: var(--surface-card);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: var(--font-main);
  font-size: 16px;
  color: var(--ink);
  height: 44px;
  transition: border-color 0.15s;
  outline: none;
}
.form-group textarea { 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); margin-top: 4px; display: none; }
.form-error-msg.visible { display: block; }
.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-family: var(--font-main);
  font-size: 14px;
  font-weight: 500;
  height: 40px;
  cursor: pointer;
  transition: background 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.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(--success); border: 1px solid #b8ddd0; 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-name { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.footer-brand-name span { color: var(--primary); }
.footer-desc { font-size: 14px; color: var(--body); line-height: 1.6; }
.footer-col h4 { 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: 8px; }
.footer-col ul a { font-size: 14px; color: var(--body); transition: color 0.15s; }
.footer-col ul a:hover { color: var(--ink); }
.footer-bottom { padding-top: 32px; border-top: 1px solid var(--hairline-soft); display: flex; align-items: center; justify-content: space-between; }
.footer-copy { font-size: 13px; color: var(--muted); }
.footer-updated { font-size: 13px; color: var(--muted-soft); }

/* COOKIE BANNER */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--ink);
  color: var(--canvas);
  padding: 20px 24px;
  z-index: 200;
  display: none;
}
.cookie-banner.visible { display: block; }
.cookie-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.cookie-text { flex: 1; font-size: 14px; line-height: 1.5; color: #d0cdc8; }
.cookie-text a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }
.btn-cookie-accept { background: var(--primary); color: var(--on-primary); border: none; border-radius: var(--radius-md); padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; }
.btn-cookie-reject { background: transparent; color: #d0cdc8; border: 1px solid #4a4940; border-radius: var(--radius-md); padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; }

/* PAGE HEADER */
.page-header { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.page-header h1 { font-size: 40px; font-weight: 400; line-height: 1.15; letter-spacing: -1px; color: var(--ink); margin-bottom: 12px; }
.page-header p { font-size: 16px; color: var(--body); max-width: 560px; }
.page-content { padding: 64px 0 80px; }
.page-content h2 { font-size: 26px; font-weight: 400; line-height: 1.25; letter-spacing: -0.325px; color: var(--ink); margin: 40px 0 16px; }
.page-content h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 28px 0 12px; }
.page-content p { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 20px; }
.page-content ul { padding-left: 24px; margin-bottom: 20px; }
.page-content li { font-size: 16px; color: var(--body); line-height: 1.65; margin-bottom: 8px; }
.page-content a { color: var(--primary); }
.prose-max { max-width: 740px; }
.page-updated { font-size: 13px; color: var(--muted); margin-bottom: 32px; }

/* STATS ROW */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--hairline); border: 1px solid var(--hairline); border-radius: var(--radius-lg); overflow: hidden; margin: 48px 0; }
.stat-item { background: var(--surface-card); padding: 32px; text-align: center; }
.stat-number { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--ink); line-height: 1; margin-bottom: 8px; }
.stat-label { font-size: 14px; color: var(--body); }

/* INTRO 2-COL */
.intro-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.intro-2col-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); }
.intro-2col-image img { width: 100%; height: 300px; object-fit: cover; }

/* SPINNER */
.spinner { width: 14px; height: 14px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero h1 { font-size: 40px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 32px; letter-spacing: -0.8px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .cards-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .intro-2col { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .article-body h1 { font-size: 30px; }
}

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .hero { padding: 48px 0; }
  .cookie-inner { flex-direction: column; align-items: flex-start; }
}