:root {
  --ink: #162b35;
  --ink-soft: #50636c;
  --paper: #f7f4ed;
  --white: #fff;
  --teal: #0f6c68;
  --teal-dark: #084b49;
  --teal-pale: #dcedea;
  --amber: #e59f2a;
  --amber-pale: #fff1cc;
  --line: #cdd8d5;
  --danger: #8b342a;
  --shadow: 0 18px 50px rgba(22, 43, 53, .10);
  --radius: 1.25rem;
  --max: 72rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 1rem/1.7 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: var(--teal-dark); text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--teal); }
:focus-visible { outline: .2rem solid var(--amber); outline-offset: .2rem; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; padding: .75rem 1rem; background: var(--ink); color: white; }
.skip-link:focus { left: 1rem; top: 1rem; }
.wrap { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.narrow { width: min(calc(100% - 2rem), 48rem); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(247, 244, 237, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.nav-row { min-height: 4.6rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .75rem; color: var(--ink); text-decoration: none; font-weight: 800; line-height: 1.1; }
.brand-mark { display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: 50%; background: var(--teal); color: white; box-shadow: inset 0 0 0 .35rem rgba(255,255,255,.15); }
.brand-mark::before { content: "↗"; font-size: 1.4rem; }
.brand small { display: block; margin-top: .15rem; color: var(--ink-soft); font-size: .72rem; font-weight: 650; letter-spacing: .04em; text-transform: uppercase; }
.nav-toggle { display: none; border: 1px solid var(--line); border-radius: .75rem; background: var(--white); color: var(--ink); padding: .65rem .8rem; font: inherit; font-weight: 700; }
.primary-nav { display: flex; align-items: center; gap: .2rem; }
.primary-nav a { padding: .6rem .68rem; border-radius: .65rem; color: var(--ink); text-decoration: none; font-size: .93rem; font-weight: 700; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { background: var(--teal-pale); color: var(--teal-dark); }
.primary-nav .nav-highlight { background: var(--amber-pale); color: var(--ink); }
.primary-nav .nav-highlight:hover, .primary-nav .nav-highlight[aria-current="page"] { background: var(--amber); color: var(--ink); }
.hero { padding: clamp(3.2rem, 8vw, 7.5rem) 0 4rem; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: .5rem; margin: 0 0 1rem; color: var(--teal-dark); font-size: .82rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 1.9rem; height: .16rem; background: var(--amber); }
h1, h2, h3 { margin: 0 0 .8rem; line-height: 1.12; letter-spacing: -.025em; }
h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.55rem, 6vw, 5.25rem); font-weight: 700; }
.article-hero h1 { font-size: clamp(2.35rem, 5vw, 4.35rem); }
h2 { margin-top: 2.5rem; font-size: clamp(1.65rem, 3.2vw, 2.55rem); }
h3 { margin-top: 1.6rem; font-size: 1.25rem; }
.lede { max-width: 44rem; color: var(--ink-soft); font-size: clamp(1.08rem, 2vw, 1.35rem); }
.hero-actions, .button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: .7rem 1.1rem; border: 2px solid var(--teal-dark); border-radius: .8rem; background: var(--teal-dark); color: white; text-decoration: none; font-weight: 800; }
.button:hover { background: var(--teal); color: white; }
.button.secondary { background: transparent; color: var(--teal-dark); }
.button.secondary:hover { background: var(--teal-pale); }
.route-card { position: relative; padding: 2rem; border: 1px solid var(--line); border-radius: 2rem 2rem .5rem 2rem; background: var(--white); box-shadow: var(--shadow); }
.route-card::before { content: ""; position: absolute; inset: -1rem -1rem auto auto; width: 6rem; height: 6rem; border: 1px solid var(--amber); border-radius: 50%; opacity: .7; }
.route-step { display: grid; grid-template-columns: 2.2rem 1fr; gap: .9rem; position: relative; padding: .6rem 0 1rem; }
.route-step:not(:last-child)::after { content: ""; position: absolute; left: 1.08rem; top: 2.9rem; bottom: -.1rem; border-left: 2px dotted var(--line); }
.route-step span { display: grid; place-items: center; width: 2.2rem; height: 2.2rem; border-radius: 50%; background: var(--teal); color: white; font-weight: 850; }
.route-step strong { display: block; }
.route-step small { color: var(--ink-soft); }
.trust-strip { border-block: 1px solid var(--line); background: rgba(255,255,255,.5); }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.trust-item { padding: 1.2rem; text-align: center; font-weight: 750; }
.trust-item + .trust-item { border-left: 1px solid var(--line); }
section { padding: 2.7rem 0; }
.section-head { max-width: 47rem; margin-bottom: 1.6rem; }
.section-head p { color: var(--ink-soft); }
.grid-2, .grid-3 { display: grid; gap: 1.1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 1.45rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.card-link { display: block; color: inherit; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; }
.card-link:hover { transform: translateY(-3px); color: inherit; box-shadow: var(--shadow); }
.number { color: var(--teal); font-family: Georgia, serif; font-size: 2.25rem; font-weight: 700; line-height: 1; }
.notice { margin: 1.5rem 0; padding: 1.1rem 1.25rem; border-left: .35rem solid var(--amber); border-radius: 0 .8rem .8rem 0; background: var(--amber-pale); }
.notice strong { display: block; }
.notice.info { border-left-color: var(--teal); background: var(--teal-pale); }
.notice.warning { border-left-color: var(--danger); background: #f8e8e5; }
.article-hero { padding: 3.6rem 0 2.3rem; border-bottom: 1px solid var(--line); }
.breadcrumbs { margin-bottom: 1.1rem; color: var(--ink-soft); font-size: .9rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li + li::before { content: "/"; margin-right: .4rem; color: #829199; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 15rem; gap: 3rem; align-items: start; }
.article { max-width: 48rem; }
.article p, .article li { color: #263f49; }
.article table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; background: white; font-size: .95rem; }
.article th, .article td { padding: .75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.article th { background: var(--teal-pale); }
.toc { position: sticky; top: 6rem; padding: 1rem; border-left: 2px solid var(--line); }
.toc strong { display: block; margin-bottom: .6rem; }
.toc a { display: block; padding: .3rem 0; font-size: .9rem; text-decoration: none; }
.checklist { margin: 1.3rem 0; padding: 0; list-style: none; }
.checklist li { position: relative; margin: .65rem 0; padding: .85rem .9rem .85rem 2.8rem; border: 1px solid var(--line); border-radius: .75rem; background: white; }
.checklist li::before { content: "✓"; position: absolute; left: .9rem; top: .8rem; display: grid; place-items: center; width: 1.25rem; height: 1.25rem; border-radius: 50%; background: var(--teal); color: white; font-size: .8rem; font-weight: 900; }
.steps { counter-reset: step; margin: 1.5rem 0; padding: 0; list-style: none; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 2.7rem 1fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 2.7rem; height: 2.7rem; border-radius: .8rem; background: var(--ink); color: white; font-weight: 850; }
.steps strong { display: block; }
.comparison { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin: 1.5rem 0; }
.comparison > div { padding: 1.25rem; border: 1px solid var(--line); border-radius: 1rem; background: white; }
.comparison .accent { border-top: .35rem solid var(--teal); }
.path-choice { position: relative; overflow: hidden; padding: 1.6rem; border: 1px solid var(--line); border-radius: 1.25rem; background: white; }
.path-choice::after { content: ""; position: absolute; right: -2.5rem; bottom: -2.5rem; width: 7rem; height: 7rem; border: 1.1rem solid var(--teal-pale); border-radius: 50%; }
.path-choice > * { position: relative; z-index: 1; }
.path-choice .tag { margin-bottom: .8rem; }
.cta-band { margin: 2.5rem 0; padding: clamp(1.5rem, 4vw, 2.7rem); border-radius: 1.5rem; background: var(--ink); color: white; }
.cta-band h2, .cta-band h3 { color: white; margin-top: 0; }
.cta-band p { color: #d7e1e3; }
.cta-band a:not(.button) { color: #fff0b5; }
.cta-band .button { border-color: var(--amber); background: var(--amber); color: var(--ink); }
details { margin: .8rem 0; border: 1px solid var(--line); border-radius: .85rem; background: white; }
summary { padding: 1rem 1.15rem; cursor: pointer; font-weight: 800; }
details > div { padding: 0 1.15rem 1rem; }
.related { padding-top: 1.5rem; border-top: 1px solid var(--line); }
.source-list { font-size: .92rem; }
.source-list li { margin-bottom: .55rem; }
.site-footer { margin-top: 3rem; padding: 3rem 0 1.5rem; background: var(--ink); color: #dce6e8; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 2rem; }
.site-footer h2, .site-footer h3 { color: white; font-size: 1.05rem; margin-top: 0; }
.site-footer a { color: #ecf6f5; }
.site-footer ul { margin: 0; padding: 0; list-style: none; }
.site-footer li { margin: .45rem 0; }
.footer-note { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid #3b5059; color: #b9c8cd; font-size: .84rem; }
.meta-line { color: var(--ink-soft); font-size: .9rem; }
.tag { display: inline-block; margin: .2rem .2rem .2rem 0; padding: .28rem .55rem; border-radius: 999px; background: var(--teal-pale); color: var(--teal-dark); font-size: .78rem; font-weight: 750; }
.error-page { min-height: 70vh; display: grid; place-items: center; text-align: center; }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav { display: none; position: absolute; left: 1rem; right: 1rem; top: 4.25rem; padding: .75rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--white); box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: .75rem; }
  .hero-grid, .article-layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; border-left: 0; border-bottom: 1px solid var(--line); }
}

@media (max-width: 680px) {
  .brand small { display: none; }
  .brand { font-size: .9rem; }
  .hero { padding-top: 2.6rem; }
  .grid-2, .grid-3, .comparison, .footer-grid, .trust-grid { grid-template-columns: 1fr; }
  .trust-item + .trust-item { border-left: 0; border-top: 1px solid var(--line); }
  .article table { display: block; overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}