/* ReDone — business-minimal career styling */

:root {
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --ink: #1a2433;
  --muted: #5b6b7f;
  --navy: #14324f;
  --navy-deep: #0d2136;
  --accent: #2f6fed;
  --accent-ink: #1d53c4;
  --border: #e3e8ef;
  --border-strong: #cfd8e3;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

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

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy); color: #fff; padding: 8px 14px; z-index: 100;
}
.skip:focus { left: 0; }

/* ---------- header ---------- */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.brand { display: flex; flex-direction: column; line-height: 1.1; }
.brand-mark {
  font-weight: 800; font-size: 22px; letter-spacing: -0.5px; color: var(--navy);
}
.brand:hover .brand-mark { color: var(--accent-ink); }
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: 0.3px; }
.site-nav { display: flex; gap: 26px; }
.site-nav a { color: var(--ink); font-weight: 600; font-size: 15px; }
.site-nav a:hover { color: var(--accent); text-decoration: none; }
.site-nav a[aria-current="page"] { color: var(--accent); }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(180deg, #eef3f9 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
  padding: 72px 0 64px;
}
.hero-kicker {
  margin: 0 0 14px; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent-ink);
}
.hero-title {
  margin: 0 0 16px; font-size: 46px; line-height: 1.1; letter-spacing: -1.2px;
  color: var(--navy); font-weight: 800; max-width: 640px;
}
.hero-sub {
  margin: 0 0 30px; font-size: 19px; color: var(--muted); max-width: 560px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.btn {
  display: inline-block; padding: 12px 22px; font-weight: 700; font-size: 15px;
  border-radius: 3px; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); color: #fff; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--navy); color: var(--navy); text-decoration: none; }
.hero-stats { display: flex; gap: 48px; flex-wrap: wrap; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 28px; color: var(--navy); font-weight: 800; }
.hero-stats span { font-size: 13px; color: var(--muted); }

/* ---------- sections ---------- */
.section { padding: 56px 0; }
.section-soft { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { margin: 0 0 26px; font-size: 26px; letter-spacing: -0.5px; color: var(--navy); }
.section-more { margin: 26px 0 0; }

.topic-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.topic-card {
  display: flex; flex-direction: column; gap: 8px;
  border: 1px solid var(--border); border-top: 3px solid var(--navy);
  padding: 22px 20px; color: var(--ink);
}
.topic-card:hover { border-color: var(--border-strong); border-top-color: var(--accent); text-decoration: none; }
.topic-card h3 { margin: 0; font-size: 18px; color: var(--navy); }
.topic-card p { margin: 0; font-size: 14px; color: var(--muted); flex: 1; }
.topic-count { font-size: 13px; font-weight: 700; color: var(--accent-ink); }

/* ---------- guide lists ---------- */
.guide-list { border-top: 1px solid var(--border); }
.guide-row {
  display: flex; align-items: center; gap: 18px;
  padding: 16px 4px; border-bottom: 1px solid var(--border);
  color: var(--ink);
}
.guide-row:hover { background: var(--bg-soft); text-decoration: none; }
.guide-cat {
  flex: 0 0 auto; font-size: 12px; font-weight: 700; letter-spacing: 0.5px;
  text-transform: uppercase; color: var(--muted); width: 96px;
}
.guide-title { flex: 1; font-weight: 600; }
.guide-row:hover .guide-title { color: var(--accent-ink); }
.guide-meta { flex: 0 0 auto; font-size: 13px; color: var(--muted); }

/* ---------- page head ---------- */
.page-head { padding: 56px 0 24px; border-bottom: 1px solid var(--border); background: var(--bg-soft); }
.page-head h1 { margin: 0 0 10px; font-size: 36px; letter-spacing: -0.8px; color: var(--navy); }
.page-head p { margin: 0; font-size: 17px; color: var(--muted); max-width: 640px; }
.cat-heading { margin: 40px 0 8px; font-size: 20px; color: var(--navy); }
.cat-heading:first-child { margin-top: 0; }

/* ---------- article ---------- */
.breadcrumb { font-size: 13px; color: var(--muted); margin: 0 0 26px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 6px; }
.article { padding: 40px 0 72px; }
.article-wrap { max-width: 760px; }
.article-head { margin-bottom: 34px; }
.article-cat {
  display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--accent-ink); margin-bottom: 12px;
}
.article-head h1 { margin: 0 0 12px; font-size: 38px; line-height: 1.15; letter-spacing: -0.8px; color: var(--navy); }
.article-meta { margin: 0; font-size: 14px; color: var(--muted); }
.article-body { border-top: 1px solid var(--border); }
.article-section { padding: 26px 0; border-bottom: 1px solid var(--border); }
.article-section h2 { display: flex; align-items: baseline; gap: 14px; margin: 0 0 14px; font-size: 22px; color: var(--navy); letter-spacing: -0.3px; }
.article-section .num {
  font-size: 14px; font-weight: 800; color: var(--accent-ink);
  background: #eaf1fd; padding: 2px 9px; border-radius: 3px;
}
.article-section p { margin: 0; color: #2a3546; }
.article-section p + p { margin-top: 14px; }
.related { margin-top: 44px; padding: 24px; background: var(--bg-soft); border: 1px solid var(--border); }
.related h2 { margin: 0 0 12px; font-size: 18px; color: var(--navy); }
.related ul { margin: 0; padding-left: 20px; }
.related li { margin: 6px 0; }

/* ---------- prose ---------- */
.prose { max-width: 760px; }
.prose h2 { font-size: 22px; color: var(--navy); margin: 34px 0 12px; }
.prose h3 { font-size: 18px; color: var(--navy); margin: 26px 0 10px; }
.prose p { margin: 0 0 16px; }
.prose ul { margin: 0 0 16px; padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose .updated { color: var(--muted); font-size: 14px; }

/* ---------- footer ---------- */
.site-footer { background: var(--navy-deep); color: #c9d5e2; margin-top: 60px; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px;
  padding-top: 48px; padding-bottom: 40px;
}
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.footer-tag { font-size: 14px; color: #93a6ba; max-width: 260px; }
.footer-h { font-size: 13px; text-transform: uppercase; letter-spacing: 1px; color: #7e93a8; margin: 0 0 14px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin: 8px 0; }
.site-footer a { color: #c9d5e2; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  border-top: 1px solid #24384f; padding-top: 20px; padding-bottom: 24px;
  font-size: 13px; color: #7e93a8;
}
.footer-bottom a { color: #7e93a8; }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .hero-title { font-size: 34px; }
  .topic-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-head h1 { font-size: 30px; }
}
@media (max-width: 520px) {
  .topic-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .guide-row { flex-wrap: wrap; gap: 4px 12px; }
  .guide-cat { width: auto; }
  .site-nav { gap: 14px; }
}