:root {
  --guide-ink: #14211e;
  --guide-muted: #66716d;
  --guide-paper: #f6f4ed;
  --guide-cream: #ebe6d9;
  --guide-blue: #214ce0;
  --guide-blue-soft: #edf4ff;
  --guide-line: #d8d8cf;
  --guide-serif: "Noto Serif JP", Georgia, serif;
  --guide-sans: "DM Sans", "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--guide-ink); background: var(--guide-paper); font-family: var(--guide-sans); line-height: 1.75; }
a { color: inherit; }
img { max-width: 100%; height: auto; }

.guide-header {
  width: 100%;
  min-height: 76px;
  padding: 16px max(5vw, 24px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(246, 244, 237, .92);
  border-bottom: 1px solid rgba(216, 216, 207, .75);
}
.guide-brand { text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: -.04em; display: inline-flex; align-items: center; gap: 9px; white-space: nowrap; }
.guide-brand img { width: 29px; height: 29px; border-radius: 8px; }
.guide-nav { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 10px 20px; font-size: 12px; font-weight: 700; }
.guide-nav a { text-decoration: none; color: var(--guide-muted); }
.guide-nav a:hover, .guide-nav a[aria-current="page"] { color: var(--guide-blue); }
.guide-nav .guide-nav-cta { color: var(--guide-blue); border: 1px solid var(--guide-blue); border-radius: 99px; padding: 6px 12px; }

.guide-shell { max-width: 1180px; margin: 0 auto; padding: 0 max(5vw, 24px); }
.guide-hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); gap: 7vw; align-items: end; padding: clamp(68px, 10vw, 132px) 0 88px; }
.guide-kicker { color: var(--guide-blue); font-size: 11px; font-weight: 800; letter-spacing: .16em; margin: 0 0 18px; }
.guide-hero h1, .guide-article h1, .guide-section-heading h2 { font-family: var(--guide-serif); font-weight: 600; letter-spacing: -.07em; line-height: 1.2; margin: 0; }
.guide-hero h1 { max-width: 800px; font-size: clamp(42px, 6vw, 78px); }
.guide-hero-lead { max-width: 680px; margin: 28px 0 0; color: #40504a; font-size: clamp(17px, 2vw, 21px); }
.guide-hero-aside { background: var(--guide-ink); color: #fff; padding: 26px; border-radius: 3px; }
.guide-hero-aside strong { display: block; color: #c6ed4b; font-size: 12px; letter-spacing: .1em; }
.guide-hero-aside p { margin: 12px 0 0; color: #dfe7df; font-size: 13px; }
.guide-hero-aside a { display: inline-block; margin-top: 20px; color: #fff; font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }

.guide-featured { background: var(--guide-blue-soft); padding: clamp(24px, 4vw, 48px); border: 1px solid #d7e5ff; }
.guide-section-heading { max-width: 760px; }
.guide-section-heading h2 { font-size: clamp(32px, 4vw, 52px); }
.guide-section-heading p:not(.guide-kicker) { color: var(--guide-muted); margin: 18px 0 0; }
.guide-card { display: grid; grid-template-columns: minmax(250px, .82fr) minmax(0, 1.18fr); gap: clamp(24px, 5vw, 64px); align-items: center; margin-top: 42px; padding: 18px; background: #fff; border: 1px solid var(--guide-line); box-shadow: 0 18px 46px rgba(33, 76, 224, .08); }
.guide-card-visual { min-height: 330px; display: grid; place-items: end start; padding: 22px; background: linear-gradient(145deg, rgba(20, 33, 30, .05), rgba(33, 76, 224, .35)), url('https://images.unsplash.com/photo-1513407030348-c983a97b98d8?auto=format&fit=crop&w=1000&q=85') center/cover; }
.guide-card-visual span { padding: 7px 10px; color: #fff; background: var(--guide-ink); font-size: 10px; letter-spacing: .1em; font-weight: 800; }
.guide-card-copy { padding: 16px clamp(8px, 3vw, 32px) 16px 0; }
.guide-card-meta, .guide-meta { color: var(--guide-muted); font-size: 11px; }
.guide-card h3 { font-family: var(--guide-serif); font-size: clamp(27px, 3.4vw, 44px); line-height: 1.25; letter-spacing: -.06em; margin: 12px 0 14px; }
.guide-card p { color: var(--guide-muted); margin: 0; }
.guide-card-link { display: inline-flex; align-items: center; gap: 12px; margin-top: 24px; color: var(--guide-blue); font-size: 13px; font-weight: 800; text-decoration: none; }
.guide-card-link span { font-size: 20px; }
.guide-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 18px 0 0; padding: 0; list-style: none; }
.guide-tags li { padding: 4px 9px; border: 1px solid #c9d7ee; border-radius: 99px; color: var(--guide-blue); font-size: 10px; }

.guide-principles { display: grid; grid-template-columns: .8fr 1.2fr; gap: 8vw; padding: 112px 0 128px; }
.guide-principles h2 { max-width: 480px; font-family: var(--guide-serif); font-size: clamp(32px, 4vw, 52px); line-height: 1.25; letter-spacing: -.07em; margin: 0; }
.guide-principle-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px 24px; }
.guide-principle { border-top: 1px solid var(--guide-ink); padding-top: 12px; }
.guide-principle b { color: var(--guide-blue); font-size: 11px; }
.guide-principle h3 { font-size: 16px; margin: 17px 0 7px; }
.guide-principle p { color: var(--guide-muted); font-size: 13px; margin: 0; }
.guide-footer { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: 28px max(5vw, 24px); background: #fff; color: var(--guide-muted); font-size: 11px; }
.guide-footer a { color: var(--guide-blue); }

/* Article pages */
.guide-article-wrap { max-width: 980px; margin: 0 auto; padding: 56px max(5vw, 24px) 112px; }
.guide-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; color: var(--guide-muted); font-size: 11px; margin-bottom: 48px; }
.guide-breadcrumb a { color: var(--guide-blue); text-underline-offset: 3px; }
.guide-article-header { max-width: 820px; }
.guide-article h1 { font-size: clamp(40px, 6vw, 72px); }
.guide-article-dek { max-width: 760px; color: #40504a; font-size: clamp(17px, 2vw, 21px); margin: 28px 0 0; }
.guide-article-meta { display: flex; flex-wrap: wrap; gap: 7px 18px; align-items: center; margin-top: 24px; }
.guide-article-hero { margin: 48px 0 66px; }
.guide-article-hero img { display: block; width: 100%; max-height: 470px; object-fit: cover; }
.guide-article-hero figcaption { margin-top: 9px; color: var(--guide-muted); font-size: 10px; }
.guide-article-layout { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: clamp(28px, 6vw, 72px); align-items: start; }
.guide-toc { position: sticky; top: 24px; border-top: 1px solid var(--guide-ink); padding-top: 11px; }
.guide-toc strong { font-size: 11px; letter-spacing: .1em; }
.guide-toc ol { padding: 0; margin: 13px 0 0; list-style: none; }
.guide-toc li + li { margin-top: 8px; }
.guide-toc a { color: var(--guide-muted); font-size: 11px; text-decoration: none; }
.guide-toc a:hover { color: var(--guide-blue); }
.guide-content { min-width: 0; }
.guide-content > p, .guide-content > ul, .guide-content > ol, .guide-content > h2, .guide-content > h3, .guide-content > table, .guide-content > dl, .guide-content > aside { max-width: 720px; }
.guide-content p { color: #40504a; }
.guide-content h2 { margin: 58px 0 16px; font-family: var(--guide-serif); font-size: clamp(28px, 4vw, 42px); line-height: 1.3; letter-spacing: -.06em; }
.guide-content h3 { margin: 30px 0 7px; font-size: 20px; line-height: 1.4; }
.guide-content ul, .guide-content ol { color: #40504a; padding-left: 1.25rem; }
.guide-content li + li { margin-top: 8px; }
.guide-content a { color: var(--guide-blue); text-underline-offset: 3px; }
.direct-answer { padding: 22px 24px; border-left: 4px solid var(--guide-blue); background: var(--guide-blue-soft); color: var(--guide-ink) !important; font-size: 17px; }
.quick-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 26px 0; }
.quick-facts div { padding: 15px; background: #fff; border: 1px solid var(--guide-line); }
.quick-facts dt { color: var(--guide-muted); font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.quick-facts dd { margin: 5px 0 0; font-size: 14px; font-weight: 700; }
.guide-route-table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 13px; background: #fff; }
.guide-route-table th, .guide-route-table td { padding: 13px 14px; border: 1px solid var(--guide-line); text-align: left; vertical-align: top; }
.guide-route-table th { background: var(--guide-ink); color: #fff; font-size: 11px; letter-spacing: .05em; }
.guide-route-table td:first-child { font-weight: 800; white-space: nowrap; }
.guide-callout { margin: 28px 0; padding: 22px 24px; background: #fff; border: 1px solid var(--guide-line); }
.guide-callout strong { display: block; color: var(--guide-blue); font-size: 11px; letter-spacing: .1em; }
.guide-callout p { margin: 8px 0 0; }
.guide-sources { margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--guide-line); }
.guide-sources h2 { margin-top: 0; font-family: var(--guide-sans); font-size: 18px; letter-spacing: 0; }
.guide-sources ul { font-size: 12px; }
.guide-article-cta { margin-top: 60px; padding: clamp(26px, 5vw, 44px); background: var(--guide-ink); color: #fff; }
.guide-article-cta h2 { color: #fff; margin: 0; font-size: clamp(27px, 4vw, 40px); }
.guide-article-cta p { color: #dfe7df; }
.guide-article-cta a { color: #c6ed4b; font-weight: 800; }
.guide-related { margin-top: 42px; font-size: 13px; }

@media (max-width: 800px) {
  .guide-header { align-items: flex-start; flex-direction: column; }
  .guide-nav { justify-content: flex-start; }
  .guide-hero, .guide-principles { grid-template-columns: 1fr; gap: 36px; }
  .guide-hero { padding: 70px 0 70px; }
  .guide-card { grid-template-columns: 1fr; }
  .guide-card-visual { min-height: 260px; }
  .guide-card-copy { padding: 5px 8px 14px; }
  .guide-article-layout { grid-template-columns: 1fr; }
  .guide-toc { position: static; }
  .guide-toc ol { display: flex; flex-wrap: wrap; gap: 8px 14px; }
  .guide-toc li + li { margin-top: 0; }
}
@media (max-width: 560px) {
  .guide-principle-list, .quick-facts { grid-template-columns: 1fr; }
  .guide-route-table { display: block; overflow-x: auto; white-space: nowrap; }
  .guide-route-table td { white-space: normal; min-width: 140px; }
  .guide-route-table td:first-child { min-width: 85px; }
  .guide-article-wrap { padding-top: 36px; }
  .guide-article-hero { margin-top: 34px; }
}