/* Guide pages (conditions/*.html): a light reading layout in the main site's palette and type.
   Single deliberate theme, like the site's daytime sections. */
:root {
  color-scheme: light;
  --day: #FAF4EA;
  --day-2: #F2E9DC;
  --card: #FFFCF6;
  --ink: #1E1A22;
  --ink-2: #4B4450;
  --ink-3: #6E6672;
  --line: rgba(30, 26, 34, 0.14);
  --accent: #B34A15;
  --amber: #FFB45C;
  --sans: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --gutter: clamp(16px, 4.5vw, 56px);
  --max: 1240px;
  --read: 720px;
}
* { box-sizing: border-box; }
html { background: var(--day); }
body { margin: 0; background: var(--day); color: var(--ink); font-family: var(--sans); font-size: 18px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.read { max-width: calc(var(--read) + 2 * var(--gutter)); }
.mid { max-width: calc(1000px + 2 * var(--gutter)); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding-inline: 22px; border: 1px solid transparent; border-radius: 999px; font: 500 15.5px/1 var(--sans); letter-spacing: -0.01em; text-decoration: none; white-space: nowrap; transition: background-color .2s ease, border-color .2s ease; }
.btn-ink { background: var(--ink); color: var(--day); }
.btn-ink:hover { background: #3A3340; }
.btn-amber { background: var(--amber); color: #1A1206; }
.btn-amber:hover { background: #FFC67E; }
.btn-line { border-color: rgba(250, 244, 234, 0.4); color: var(--day); }
.btn-line:hover { border-color: var(--day); }
.btn-sm { min-height: 38px; padding-inline: 16px; font-size: 14px; }

/* Top bar */
.top { position: sticky; top: 0; z-index: 10; padding-top: env(safe-area-inset-top, 0px); background: rgba(250, 244, 234, 0.9); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.top-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.brand-mark { width: 26px; height: 26px; flex: none; overflow: visible; }
.brand-word { font-size: 18px; font-weight: 600; letter-spacing: -0.03em; }
.top nav { display: flex; align-items: center; gap: 24px; font-size: 15px; }
.top nav a:not(.btn) { text-decoration: none; white-space: nowrap; opacity: 0.72; }
.top nav a:not(.btn):hover, .top nav a[aria-current] { opacity: 1; }
@media (max-width: 720px) { .top nav a:not(.btn) { display: none; } }

/* Breadcrumbs */
.crumbs { display: flex; flex-wrap: wrap; gap: 6px; margin: 28px 0 0; padding: 0; list-style: none; font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; color: var(--ink-3); }
.crumbs li + li::before { content: "/"; margin-right: 6px; opacity: 0.6; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* Page header */
.head { display: grid; gap: 18px; padding-block: clamp(28px, 5vw, 56px) clamp(28px, 4vw, 40px); }
.label { margin: 0; font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
h1 { margin: 0; font-size: clamp(36px, 5.4vw, 62px); font-weight: 600; line-height: 1.03; letter-spacing: -0.03em; text-wrap: balance; }
.lede { margin: 0; max-width: 60ch; font-size: clamp(19px, 1.6vw, 22px); line-height: 1.5; color: var(--ink-2); }
.meta { margin: 0; font-size: 14px; color: var(--ink-3); }

/* Key points */
.key { margin: 0 0 clamp(8px, 2vw, 16px); padding: clamp(20px, 3vw, 28px); border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.key h2 { margin: 0 0 12px; font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.key ul { display: grid; gap: 8px; margin: 0; padding-left: 20px; }
.key li { font-size: 17px; }

/* Article body */
.body h2 { margin: 44px 0 12px; font-size: clamp(25px, 2.4vw, 31px); font-weight: 600; line-height: 1.15; letter-spacing: -0.025em; text-wrap: balance; scroll-margin-top: 80px; }
.body p { margin: 0 0 16px; color: var(--ink-2); }
.body ul { display: grid; gap: 8px; margin: 0 0 16px; padding-left: 22px; color: var(--ink-2); }
.body li b { color: var(--ink); font-weight: 600; }
.body a { text-underline-offset: 3px; }
sup { line-height: 0; }
sup a { padding-inline: 1px; font-size: 12px; font-weight: 600; color: var(--accent); text-decoration: none; }
sup a:hover { text-decoration: underline; }

/* Product card */
.cta { display: grid; gap: 14px; margin: 48px 0 0; padding: clamp(24px, 3.4vw, 40px); border-radius: 24px; background: var(--ink); color: var(--day); }
.cta .label { color: var(--amber); }
.cta h2 { margin: 0; font-size: clamp(25px, 2.6vw, 32px); font-weight: 600; line-height: 1.12; letter-spacing: -0.025em; text-wrap: balance; }
.cta p:not(.label) { margin: 0; font-size: 17px; color: rgba(250, 244, 234, 0.82); }
.cta ul { display: grid; gap: 10px; margin: 4px 0 0; padding: 0; list-style: none; font-size: 16px; color: rgba(250, 244, 234, 0.85); }
.cta li { display: flex; gap: 12px; align-items: baseline; }
.cta li::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--amber); transform: translateY(-2px); }
.cta li b { color: var(--day); font-weight: 600; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }

/* Disclaimer */
.note { margin: 40px 0 0; padding: 16px 18px; border-left: 3px solid var(--accent); border-radius: 4px; background: #FFF4EC; font-size: 15px; color: var(--ink-2); }

/* References and related guides */
.refs, .related { padding-top: 40px; }
.refs h2, .related h2 { margin: 0; font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.refs ol { display: grid; gap: 8px; margin: 14px 0 0; padding-left: 22px; font-size: 14.5px; line-height: 1.5; color: var(--ink-3); }
.refs li { scroll-margin-top: 80px; }
.refs li:target { color: var(--ink); }
.refs a { color: var(--ink-2); overflow-wrap: anywhere; text-underline-offset: 3px; }
.related { padding-bottom: clamp(48px, 7vw, 80px); }
.rel-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 14px 0 0; padding: 0; list-style: none; }
@media (max-width: 640px) { .rel-grid { grid-template-columns: minmax(0, 1fr); } }
.rel-grid a { display: grid; align-content: start; gap: 4px; height: 100%; padding: 16px 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); text-decoration: none; transition: border-color .2s ease; }
.rel-grid a:hover { border-color: var(--ink-3); }
.rel-grid b { font-size: 17px; font-weight: 600; line-height: 1.25; letter-spacing: -0.01em; }
.rel-grid span { font-size: 14px; line-height: 1.45; color: var(--ink-3); }

/* Guides hub: an index grouped by topic, one row per guide */
.hub-groups { display: grid; gap: clamp(36px, 5vw, 56px); }
.hub-group h2 { margin: 0 0 12px; font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.hub-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.hub-list a { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 6px 32px; padding-block: 18px; border-bottom: 1px solid var(--line); text-decoration: none; }
@media (max-width: 700px) { .hub-list a { grid-template-columns: minmax(0, 1fr); } }
.hub-list b { font-size: 20px; font-weight: 600; line-height: 1.25; letter-spacing: -0.02em; text-wrap: balance; }
.hub-list span { font-size: 16px; line-height: 1.5; color: var(--ink-2); }
.hub-list a:hover b { text-decoration: underline; text-underline-offset: 4px; }
.factors { padding-block: clamp(48px, 7vw, 80px); }
.factors h2 { margin: 0 0 18px; font-size: clamp(25px, 2.4vw, 31px); font-weight: 600; line-height: 1.15; letter-spacing: -0.025em; }
.factor-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
@media (max-width: 760px) { .factor-list { grid-template-columns: minmax(0, 1fr); } }
.factor-list li { display: grid; align-content: start; gap: 8px; padding: 20px 22px; border: 1px solid var(--line); border-radius: 14px; background: var(--card); }
.factor-list b { font-size: 18px; font-weight: 600; letter-spacing: -0.015em; }
.factor-list p { margin: 0; font-size: 15.5px; color: var(--ink-2); }
.factor-list a { font-size: 15px; font-weight: 500; color: var(--accent); text-underline-offset: 3px; }

/* Footer */
.foot { padding-block: 40px 56px; background: var(--day-2); border-top: 1px solid var(--line); color: var(--ink-2); }
.foot-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px 24px; }
.foot nav { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 15px; }
.foot nav a { text-decoration: none; }
.foot nav a:hover { color: var(--ink); }
.foot p { margin: 22px 0 0; max-width: 78ch; font-size: 13px; color: var(--ink-3); }

@media (prefers-reduced-motion: reduce) { .btn, .rel-grid a { transition: none; } }