@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

:root {
  --bg: #0f1117;
  --bg-card: #181b24;
  --bg-glow: #1e2230;
  --text: #e8eaef;
  --text-muted: #8b92a8;
  --mint: #00d9a5;
  --mint-dim: rgba(0, 217, 165, 0.15);
  --violet: #8b7cf6;
  --violet-dim: rgba(139, 124, 246, 0.12);
  --border: #2a2f3d;
  --radius: 12px;
  --font: 'Inter', system-ui, sans-serif;
  --display: 'Space Grotesk', system-ui, sans-serif;
  --nav-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 900;
  background: rgba(15, 17, 23, 0.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border); height: var(--nav-h);
}
.header-inner { height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.logo { font-family: var(--display); font-size: 20px; font-weight: 700; letter-spacing: -0.03em; }
.logo .dot { color: var(--mint); }
.logo .sub { color: var(--text-muted); font-weight: 500; font-size: 13px; margin-left: 6px; }
.main-nav { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.main-nav a { font-size: 13px; font-weight: 500; color: var(--text-muted); transition: color 0.2s; }
.main-nav a:hover, .main-nav a.active { color: var(--mint); }
.header-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-card); color: var(--text); cursor: pointer; font-size: 15px;
}
.btn {
  display: inline-block; padding: 11px 24px; font-family: var(--display);
  font-size: 13px; font-weight: 600; border: none; cursor: pointer; border-radius: 8px; transition: all 0.2s;
}
.btn-mint { background: var(--mint); color: #0f1117; }
.btn-mint:hover { box-shadow: 0 0 24px var(--mint-dim); filter: brightness(1.05); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }

/* Hero bento */
.hero-bento { padding: 48px 0 40px; }
.bento-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 16px;
}
.bento-main {
  grid-row: span 2; position: relative; border-radius: var(--radius);
  border: 1px solid var(--border); overflow: hidden; min-height: 400px;
  display: flex; align-items: flex-end;
}
.bento-main img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.55; }
.bento-main .content { position: relative; z-index: 1; padding: 32px; background: linear-gradient(transparent, rgba(15,17,23,0.95)); width: 100%; }
.bento-main .tag { font-size: 10px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--mint); }
.bento-main h1 { font-family: var(--display); font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 10px 0 12px; line-height: 1.15; }
.bento-main p { color: var(--text-muted); font-size: 14px; margin: 0 0 18px; max-width: 400px; }
.bento-card {
  display: block;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; transition: border-color 0.25s, box-shadow 0.25s; color: inherit;
}
.bento-card:hover { border-color: var(--mint); box-shadow: 0 0 20px var(--mint-dim); }
.bento-card .tag { font-size: 10px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--violet); margin-bottom: 8px; }
.bento-card h3 { font-family: var(--display); font-size: 1rem; margin: 0 0 6px; }
.bento-card p { font-size: 13px; color: var(--text-muted); margin: 0; }

.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  padding: 32px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stat-cell { text-align: center; padding: 16px; background: var(--bg-glow); border-radius: var(--radius); border: 1px solid var(--border); }
.stat-cell strong { display: block; font-family: var(--display); font-size: 1.8rem; color: var(--mint); }
.stat-cell span { font-size: 11px; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; }

.section-label {
  font-size: 11px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--mint); margin-bottom: 8px;
}
.section-title { font-family: var(--display); font-size: 1.75rem; margin: 0 0 28px; }

.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding-bottom: 56px; }
.article-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.2s, border-color 0.2s;
}
.article-card:hover { transform: translateY(-3px); border-color: var(--violet); }
.article-card img { width: 100%; height: 180px; object-fit: cover; }
.article-card-body { padding: 18px 20px 22px; }
.article-card .cat { font-size: 10px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mint); margin-bottom: 6px; }
.article-card h3 { font-family: var(--display); font-size: 1.05rem; margin: 0 0 6px; line-height: 1.3; }
.article-card p { font-size: 13px; color: var(--text-muted); margin: 0; }
.topics-grid .article-card.hidden { display: none; }

.filter-chips { display: flex; gap: 8px; flex-wrap: wrap; margin: 20px 0 28px; }
.chip {
  padding: 7px 16px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--bg-card); font-family: var(--font); font-size: 11px; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; cursor: pointer; color: var(--text-muted); transition: all 0.2s;
}
.chip.active, .chip:hover { background: var(--mint); border-color: var(--mint); color: #0f1117; }

.page-hero { padding: 44px 0 32px; border-bottom: 1px solid var(--border); margin-bottom: 36px; }
.page-hero .meta { font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--violet); margin-bottom: 10px; }
.page-hero h1 { font-family: var(--display); font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 10px; max-width: 700px; }
.page-hero .lead { color: var(--text-muted); font-size: 17px; margin: 0; max-width: 580px; }

.article-layout { display: grid; grid-template-columns: 1fr 240px; gap: 40px; padding-bottom: 72px; }
.article-content img.featured { width: 100%; height: 380px; object-fit: cover; border-radius: var(--radius); margin-bottom: 28px; border: 1px solid var(--border); }
.article-content p { font-size: 16px; line-height: 1.8; color: var(--text-muted); margin-bottom: 18px; }
.article-content h2 { font-family: var(--display); font-size: 1.3rem; margin: 32px 0 12px; color: var(--text); }
.article-sidebar .widget {
  background: var(--bg-glow); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; position: sticky; top: calc(var(--nav-h) + 20px);
}
.widget-title { font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mint); margin-bottom: 12px; }
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list li { margin-bottom: 8px; }
.toc-list a { font-size: 13px; color: var(--text-muted); }
.toc-list a:hover { color: var(--mint); }

.faq-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; background: var(--bg-card); overflow: hidden; }
.faq-q { width: 100%; padding: 16px 20px; background: none; border: none; text-align: left; font-family: var(--font); font-size: 14px; font-weight: 600; color: var(--text); cursor: pointer; display: flex; justify-content: space-between; }
.faq-q::after { content: '+'; color: var(--mint); }
.faq-item.open .faq-q::after { content: '-'; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s; }
.faq-item.open .faq-a { max-height: 280px; }
.faq-a-inner { padding: 0 20px 16px; color: var(--text-muted); font-size: 14px; line-height: 1.65; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; padding: 36px 0 72px; }
.contact-form .field { margin-bottom: 16px; }
.contact-form label { display: block; font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 6px; }
.contact-form input, .contact-form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg-card); color: var(--text); font-family: var(--font);
}
.contact-form textarea { min-height: 130px; resize: vertical; }

.newsletter-strip {
  background: linear-gradient(135deg, var(--violet-dim), var(--mint-dim));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px; text-align: center; margin: 48px 0;
}
.newsletter-strip h2 { font-family: var(--display); margin: 0 0 8px; }
.newsletter-strip p { color: var(--text-muted); margin: 0 0 20px; font-size: 14px; }
.newsletter-strip form { display: flex; gap: 10px; max-width: 420px; margin: 0 auto; flex-wrap: wrap; justify-content: center; }
.newsletter-strip input { flex: 1; min-width: 200px; padding: 12px 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-card); color: var(--text); font-family: var(--font); }

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 2000; display: none; align-items: flex-start; justify-content: center; padding: 72px 20px; overflow-y: auto; }
.modal-overlay.show { display: flex; }
.modal-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); width: min(500px, 100%); padding: 28px; position: relative; }
.modal-close { position: absolute; top: 14px; right: 14px; background: none; border: none; font-size: 22px; color: var(--text-muted); cursor: pointer; }
.search-input { width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 15px; margin-bottom: 14px; }
.search-results a { display: block; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.search-results a:hover { color: var(--mint); }

#cookieBar { position: fixed; bottom: 0; left: 0; right: 0; z-index: 3000; background: var(--bg-card); border-top: 1px solid var(--mint); padding: 16px 24px; transform: translateY(100%); transition: transform 0.35s; }
#cookieBar.show { transform: translateY(0); }
.cookie-inner { max-width: 1180px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.cookie-inner p { margin: 0; font-size: 13px; color: var(--text-muted); flex: 1; }
.cookie-inner a { color: var(--mint); }
.cookie-btns { display: flex; gap: 8px; }
.cookie-btns button { padding: 8px 18px; font-family: var(--font); font-size: 12px; font-weight: 600; cursor: pointer; border-radius: 6px; border: none; }
#cookieAccept { background: var(--mint); color: #0f1117; }
#cookieDecline { background: transparent; border: 1px solid var(--border); color: var(--text); }

#toastContainer { position: fixed; bottom: 20px; right: 20px; z-index: 2500; }
.toast { background: var(--bg-card); border: 1px solid var(--mint); color: var(--text); padding: 12px 20px; margin-top: 8px; font-size: 13px; border-radius: 8px; }

#backTop { position: fixed; bottom: 20px; left: 20px; width: 44px; height: 44px; background: var(--mint); color: #0f1117; border: none; border-radius: 10px; cursor: pointer; font-size: 18px; opacity: 0; pointer-events: none; transition: opacity 0.3s; z-index: 800; font-weight: 700; }
#backTop.show { opacity: 1; pointer-events: auto; }

.site-footer { border-top: 1px solid var(--border); padding: 48px 0 24px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
.footer-grid p { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin: 8px 0 0; }
.footer-col h4 { font-size: 10px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mint); margin: 0 0 14px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { font-size: 13px; color: var(--text-muted); }
.footer-col a:hover { color: var(--mint); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--text-muted); }

@media (max-width: 992px) {
  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-main { grid-row: span 1; min-height: 300px; }
  .articles-grid { grid-template-columns: 1fr 1fr; }
  .article-layout, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--bg-card); flex-direction: column; padding: 20px; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .bento-grid, .articles-grid, .stats-row { grid-template-columns: 1fr; }
}