:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --accent: #4f46e5;
  --accent-light: #818cf8;
  --accent-soft: #eef2ff;
  --border: #e2e8f0;
  --deepseek: #1d4ed8;
  --max: 1120px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
}

a { color: var(--deepseek); text-decoration: none; }
a:hover { color: var(--accent); }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

.site-header {
  background: linear-gradient(120deg, #0f172a 0%, #1e3a5f 100%);
  color: #fff;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 16px;
  flex-wrap: wrap;
}
.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: #fff;
  letter-spacing: -0.02em;
}
.logo em {
  font-style: normal;
  color: #93c5fd;
  font-weight: 600;
}
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a {
  color: #cbd5e1;
  font-size: 0.88rem;
  font-weight: 500;
}
nav a.active, nav a:hover { color: #fff; text-decoration: none; }

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 48px 0 40px;
  align-items: center;
}
.hero-copy h1 {
  font-size: clamp(1.85rem, 3.8vw, 2.65rem);
  line-height: 1.18;
  margin: 0 0 14px;
  color: var(--ink);
}
.hero-copy h1 strong { color: var(--deepseek); }
.hero-copy .lead {
  color: var(--muted);
  margin: 0 0 18px;
  font-size: 1.02rem;
}
.keyword-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.keyword-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid #c7d2fe;
}
.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
}
.hero-card h2 {
  margin: 0 0 10px;
  font-size: 1rem;
  color: var(--deepseek);
}
.hero-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.disclaimer {
  margin-top: 16px;
  padding: 14px 16px;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 10px;
  font-size: 0.86rem;
  color: #78350f;
}

.section-title {
  padding: 36px 0 8px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
}
.section-title span { color: var(--muted); font-weight: 500; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding-bottom: 48px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover {
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  transform: translateY(-2px);
}
.card .cat {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.card h2 {
  font-size: 1.05rem;
  margin: 0 0 8px;
  line-height: 1.4;
}
.card p { margin: 0 0 12px; color: var(--muted); font-size: 0.9rem; }
.read-more { font-size: 0.85rem; font-weight: 600; color: var(--deepseek); }

.article-list { padding: 32px 0 54px; }
.article-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}
.row-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent);
}

.article {
  padding: 44px 0 56px;
  max-width: 760px;
}
.article h1 { margin-top: 0; font-size: 1.95rem; line-height: 1.25; }
.article h2 { margin-top: 28px; font-size: 1.2rem; }
.article p, .article li { color: #334155; }

.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 36px 0;
  font-size: 0.86rem;
}
.site-footer a { color: #93c5fd; }
.site-footer h4 { color: #f1f5f9; margin: 0 0 10px; }
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-disclaimer {
  font-size: 0.8rem;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid #334155;
}

.form-row { margin-bottom: 14px; }
.form-row label { display: block; margin-bottom: 6px; }
.form-row input, .form-row textarea {
  width: 100%;
  max-width: 520px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

@media (max-width: 800px) {
  .hero-split { grid-template-columns: 1fr; padding-top: 32px; }
  .article-row { grid-template-columns: 1fr; }
}