@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700,900&f[]=general-sans@400,500,600,700&display=swap');

* { box-sizing: border-box; }

:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-soft: #f8faff;
  --text: #0f172a;
  --muted: #64748b;
  --line: rgba(99, 102, 241, 0.16);
  --line-strong: rgba(99, 102, 241, 0.28);
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
}

body {
  margin: 0;
  font-family: "General Sans", "Satoshi", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.72;
  background:
    radial-gradient(circle at 10% -10%, rgba(99,102,241,0.2), transparent 42%),
    radial-gradient(circle at 100% 0%, rgba(139,92,246,0.16), transparent 35%),
    var(--bg);
}

a { color: inherit; text-decoration: none; }
.container { max-width: 980px; margin: 0 auto; padding: 0 20px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(246, 247, 251, 0.75);
  border-bottom: 1px solid rgba(99, 102, 241, 0.14);
}

.topbar-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: "Satoshi", sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  background: rgba(255,255,255,0.75);
  color: #1e293b;
  transition: all 0.22s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: 0 8px 24px rgba(99,102,241,0.16);
}

.hero {
  padding: 64px 0 30px;
}

.kicker {
  display: inline-block;
  padding: 6px 11px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.72);
  color: #4f46e5;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  font-family: "Satoshi", sans-serif;
  font-size: clamp(32px, 5.1vw, 56px);
  line-height: 1.08;
  margin: 14px 0;
  letter-spacing: -0.04em;
  max-width: 16ch;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.keyword {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(99,102,241,0.18);
  background: rgba(255,255,255,0.68);
  color: #334155;
  font-size: 12px;
  font-weight: 600;
}

.content {
  margin-top: 14px;
  margin-bottom: 72px;
  padding: 28px 28px 4px;
  border-radius: 24px;
  border: 1px solid rgba(99,102,241,0.14);
  background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(255,255,255,0.86));
  box-shadow: var(--shadow);
}

.content h2 {
  font-family: "Satoshi", sans-serif;
  font-size: clamp(24px, 3.1vw, 32px);
  margin: 30px 0 8px;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.content p,
.content li {
  color: #334155;
  font-size: 18px;
}

.content ul { padding-left: 20px; }

.note {
  margin: 20px 0;
  padding: 14px 16px;
  background: #eef2ff;
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  color: #3730a3;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 16px;
  margin: 30px 0 64px;
}

.card {
  border: 1px solid rgba(99,102,241,0.18);
  border-radius: 20px;
  padding: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(255,255,255,0.78));
  box-shadow: 0 12px 28px rgba(15,23,42,0.08);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 36px rgba(15,23,42,0.14);
  border-color: rgba(99,102,241,0.32);
}

.card h3 {
  margin: 10px 0 8px;
  font-family: "Satoshi", sans-serif;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.footer {
  border-top: 1px solid rgba(99,102,241,0.15);
  padding: 22px 0 34px;
  color: #64748b;
  font-size: 14px;
}

@media (max-width: 768px) {
  .topbar-inner { height: 62px; }
  .hero { padding-top: 44px; }
  h1 { max-width: 100%; }
  .content {
    padding: 20px 18px 2px;
    border-radius: 18px;
    margin-bottom: 54px;
  }
  .content p,
  .content li { font-size: 16px; }
}