* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  color: #1a1a1a;
  background: #f8f8f8;
  line-height: 1.6;
}

a { color: #1a6fc4; text-decoration: none; }
a:hover { text-decoration: underline; }

/* HEADER */
header {
  background: #1a1a2e;
  color: #fff;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo { font-size: 22px; font-weight: 700; color: #fff; }
.logo span { color: #e8a000; }
nav { display: flex; gap: 24px; }
nav a { color: #ccc; font-size: 15px; }
nav a:hover, nav a.active { color: #fff; text-decoration: none; }

/* HERO */
.hero {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
}
.hero h1 { font-size: 2rem; margin-bottom: 12px; }
.hero p { font-size: 1.1rem; color: #aad4f5; max-width: 600px; margin: 0 auto 24px; }
.btn {
  display: inline-block;
  background: #e8a000;
  color: #fff;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 16px;
}
.btn:hover { background: #cc8c00; text-decoration: none; }
.btn-outline {
  display: inline-block;
  border: 2px solid #1a6fc4;
  color: #1a6fc4;
  padding: 10px 24px;
  border-radius: 6px;
  font-weight: 600;
}
.btn-outline:hover { background: #1a6fc4; color: #fff; text-decoration: none; }

/* MAIN */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

main { padding: 40px 20px; max-width: 1100px; margin: 0 auto; }

/* CARDS GRID */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 768px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.5rem; }
  nav { gap: 12px; }
}

.card {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  transition: box-shadow .2s;
}
.card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.14); }
.card-icon { font-size: 2.2rem; margin-bottom: 12px; }
.card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.card p { color: #555; font-size: 14px; }

/* SECTION */
.section { padding: 48px 0; }
.section-title { font-size: 1.6rem; margin-bottom: 8px; }
.section-sub { color: #666; margin-bottom: 32px; }

/* BLOG */
.blog-list { display: flex; flex-direction: column; gap: 24px; }
.blog-card {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0,0,0,.07);
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.blog-card .bc-icon { font-size: 2.5rem; flex-shrink: 0; }
.blog-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.blog-card p { color: #555; font-size: 14px; margin-bottom: 10px; }
.tag { display: inline-block; background: #e8f0fe; color: #1a6fc4; font-size: 12px; padding: 2px 10px; border-radius: 20px; margin-right: 6px; }

/* ARTICLE */
.article-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 32px; align-items: start; }
@media (max-width: 900px) { .article-wrap { grid-template-columns: 1fr; } }
.article h1 { font-size: 1.8rem; margin-bottom: 8px; }
.article .meta { color: #888; font-size: 13px; margin-bottom: 20px; }
.article h2 { font-size: 1.3rem; margin: 28px 0 10px; }
.article p { margin-bottom: 14px; color: #333; }
.article ul, .article ol { margin: 12px 0 16px 20px; }
.article li { margin-bottom: 6px; }

/* SIDEBAR */
.sidebar-box {
  background: #fff;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,.08);
  margin-bottom: 20px;
}
.sidebar-box h4 { font-size: 1rem; margin-bottom: 12px; border-bottom: 2px solid #e8a000; padding-bottom: 8px; }

/* HIGHLIGHT BOX */
.highlight {
  background: #fff8e6;
  border-left: 4px solid #e8a000;
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  margin: 20px 0;
}
.highlight strong { color: #b87000; }

/* TABLE */
table { width: 100%; border-collapse: collapse; margin: 20px 0; }
th { background: #1a1a2e; color: #fff; padding: 10px 14px; text-align: left; font-size: 14px; }
td { padding: 10px 14px; border-bottom: 1px solid #eee; font-size: 14px; }
tr:hover td { background: #f5f8ff; }

/* BREADCRUMB */
.breadcrumb { font-size: 13px; color: #888; padding: 12px 0; }
.breadcrumb a { color: #888; }
.breadcrumb span { color: #333; }

/* FOOTER */
footer {
  background: #1a1a2e;
  color: #aaa;
  padding: 32px 20px;
  margin-top: 60px;
  text-align: center;
  font-size: 14px;
}
footer a { color: #aaa; }
footer a:hover { color: #fff; }
.footer-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; margin-bottom: 16px; }