:root {
  color-scheme: light;
  --qk-red: #a40018;
  --qk-red-dark: #7f0012;
  --qk-ink: #252525;
  --qk-muted: #666;
  --qk-line: #eadada;
  --qk-bg: #fff8f8;
  --qk-card: #ffffff;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--qk-ink);
  background: var(--qk-bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.8;
}
a { color: var(--qk-red); }
.guide-header {
  background: #fff;
  border-bottom: 1px solid var(--qk-line);
  box-shadow: 0 2px 12px rgba(126, 0, 0, .06);
}
.guide-header__inner,
.guide-shell,
.guide-footer__inner {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.guide-header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.guide-logo { display: inline-flex; align-items: center; }
.guide-logo img { display: block; width: 150px; height: auto; }
.guide-nav { display: flex; flex-wrap: wrap; gap: 16px; font-size: .95rem; }
.guide-nav a { text-decoration: none; color: #4b4b4b; }
.guide-nav a:hover { color: var(--qk-red); }
.guide-shell { padding: 28px 0 64px; }
.breadcrumbs { margin: 0 0 18px; color: var(--qk-muted); font-size: .9rem; }
.breadcrumbs a { text-decoration: none; }
.guide-card {
  background: var(--qk-card);
  border: 1px solid var(--qk-line);
  border-radius: 18px;
  padding: clamp(24px, 5vw, 56px);
  box-shadow: 0 12px 34px rgba(126, 0, 0, .06);
}
.eyebrow { margin: 0 0 8px; color: var(--qk-red); font-weight: 700; letter-spacing: .06em; }
h1 { margin: 0 0 16px; color: #7f0012; font-size: clamp(1.8rem, 4vw, 2.7rem); line-height: 1.25; }
h2 { margin: 32px 0 10px; color: #8f0016; font-size: clamp(1.2rem, 2.5vw, 1.55rem); }
h3 { margin: 22px 0 6px; font-size: 1.05rem; }
.lead { margin: 0 0 24px; color: #444; font-size: 1.08rem; }
.guide-card p { margin: 10px 0; }
.guide-card ul { margin: 10px 0 18px; padding-left: 1.4rem; }
.guide-card li + li { margin-top: 6px; }
.guide-note {
  margin: 24px 0;
  padding: 16px 18px;
  border-left: 4px solid var(--qk-red);
  background: #fff1f1;
  color: #5b3030;
}
.guide-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.guide-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 20px;
  border-radius: 999px;
  background: var(--qk-red);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}
.guide-button:hover { background: var(--qk-red-dark); }
.guide-button--secondary { background: #fff; color: var(--qk-red); border: 1px solid var(--qk-red); }
.guide-button--secondary:hover { background: #fff1f1; }
.guide-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 20px;
}
.guide-list a {
  display: block;
  padding: 14px 16px;
  background: #fffafa;
  border: 1px solid var(--qk-line);
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
}
.guide-list a span { display: block; color: var(--qk-muted); font-size: .88rem; font-weight: 400; }
.guide-footer { padding: 24px 0 36px; color: var(--qk-muted); font-size: .88rem; }
.guide-footer__inner { border-top: 1px solid var(--qk-line); padding-top: 18px; }
@media (max-width: 680px) {
  .guide-header__inner { align-items: flex-start; flex-direction: column; padding: 16px 0; gap: 10px; }
  .guide-nav { gap: 10px 14px; }
  .guide-shell { padding-top: 18px; }
  .guide-card { padding: 24px 20px; border-radius: 14px; }
}