:root {
  --yellow: #FCD535;
  --yellow-dark: #FFC305;
  --ink: #1E2329;
  --body: #474D57;
  --muted: #707A8A;
  --line: #EAECEF;
  --soft: #F5F5F5;
  --card: #FFFFFF;
  --blue: #236FE9;
  --green: #2EBD85;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #FAFAFA;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; gap: 12px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; font-size: 20px; }
.brand:hover { text-decoration: none; }
.brand img { width: 38px; height: 38px; }
.nav { display: flex; gap: 22px; margin-left: 32px; }
.nav a { color: var(--body); font-weight: 500; }
.spacer { flex: 1; }
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 12px; padding: 12px 20px; font-weight: 600; font-size: 15px; }
.btn:hover { text-decoration: none; filter: brightness(0.97); }
.btn-primary { background: var(--yellow); color: var(--ink); }
.btn-ghost { color: var(--ink); }
.btn-dark { background: var(--ink); color: #fff; }
@media (max-width: 760px) { .nav { display: none; } .btn-ghost { display: none; } }

/* Blog index */
.hero { padding: 56px 0 32px; text-align: center; }
.eyebrow { color: var(--yellow-dark); font-weight: 800; letter-spacing: 1.4px; font-size: 13px; text-transform: uppercase; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 10px 0 12px; }
.hero p { color: var(--body); font-size: 18px; max-width: 680px; margin: 0 auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; padding-bottom: 64px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 24px; display: flex; flex-direction: column; color: var(--ink); transition: box-shadow .2s, transform .2s; }
.card:hover { text-decoration: none; box-shadow: 0 14px 32px rgba(30, 35, 41, .08); transform: translateY(-2px); }
.card .tag { align-self: flex-start; background: rgba(252, 213, 53, .25); color: var(--ink); font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 20px; }
.card h2 { font-size: 20px; line-height: 1.3; margin: 14px 0 8px; }
.card p { color: var(--body); margin: 0 0 16px; flex: 1; }
.card .meta { color: var(--muted); font-size: 13px; }

/* Article */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 48px; padding: 40px 0 64px; }
@media (max-width: 960px) { .article-layout { grid-template-columns: 1fr; } .toc { display: none; } }
.breadcrumb { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.breadcrumb a { color: var(--muted); }
article h1 { font-size: clamp(28px, 4.5vw, 42px); line-height: 1.18; margin: 0 0 14px; }
.article-meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; display: flex; gap: 14px; flex-wrap: wrap; }
.lead { font-size: 19px; color: var(--body); }
article .content { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: clamp(22px, 4vw, 44px); }
.content h2 { font-size: 26px; line-height: 1.25; margin: 36px 0 12px; scroll-margin-top: 90px; }
.content h2:first-child { margin-top: 0; }
.content h3 { font-size: 19px; margin: 24px 0 8px; }
.content p, .content li { color: var(--body); font-size: 17px; }
.content ul, .content ol { padding-left: 22px; }
.content li { margin-bottom: 6px; }
.content strong { color: var(--ink); }
.tip { background: rgba(252, 213, 53, .18); border-left: 4px solid var(--yellow); border-radius: 12px; padding: 14px 18px; margin: 20px 0; color: var(--ink); }
.toc { position: sticky; top: 92px; align-self: start; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; }
.toc strong { display: block; margin-bottom: 10px; }
.toc a { display: block; color: var(--body); font-size: 14px; padding: 5px 0; }
.cta { margin-top: 32px; border-radius: 22px; padding: 32px; background: linear-gradient(135deg, var(--yellow), var(--yellow-dark)); text-align: center; }
.cta h2 { margin: 0 0 8px; font-size: 26px; }
.cta p { margin: 0 0 20px; color: rgba(30, 35, 41, .8); }
.related { margin-top: 48px; }
.related h2 { font-size: 24px; }
.related .grid { padding-bottom: 0; }

/* Footer */
.site-footer { background: var(--card); border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer nav a { color: var(--body); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.contact-card h2 { margin: 12px 0 4px; }
.contact-icon { width: 52px; height: 52px; border-radius: 16px; background: var(--yellow); color: var(--ink); display: grid; place-items: center; }
.contact-value { color: var(--ink) !important; font-weight: 700; font-size: 18px; flex: 0 !important; margin-bottom: 8px !important; }
.company { margin: 20px 0 64px; }
.company h2 { margin: 0 0 8px; font-size: 22px; }
.company p { flex: 0; }
.company dl { display: grid; grid-template-columns: max-content 1fr; gap: 10px 24px; margin: 8px 0 0; }
.company dt { color: var(--muted); }
.company dd { margin: 0; color: var(--ink); font-weight: 600; }
@media (max-width: 560px) { .company dl { grid-template-columns: 1fr; gap: 2px; } .company dd { margin-bottom: 10px; } }