/* frame: boxes, flow, grids and positions only. Type lives in letters.css, colour and surface in surface.css. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-bottom: 6rem; }
body { margin: 0; min-height: 100vh; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul[role="list"], ol.note-list { padding: 0; list-style: none; }

/* utilities */
.stack > * + * { margin-top: var(--flow, 1rem); }
.cluster { display: flex; flex-wrap: wrap; gap: .75rem; }
.u-tabnum { font-variant-numeric: tabular-nums; }

/* shell */
.shell { width: 100%; max-width: 45rem; margin: 0 auto; padding: 0 1rem 7.5rem; }
.homelink-row { padding-top: .75rem; }
.homelink { display: inline-flex; align-items: center; gap: .5rem; min-height: 44px; padding: 0 .25rem; }
.main { --flow: 1.25rem; padding-top: .5rem; }

.page-head { --flow: .75rem; padding: 1.25rem 0 .5rem; }

.card { padding: 1.25rem; }
.card--hero, .card--graph { padding: 1.5rem 1.25rem; }
.card > * + * { margin-top: 1rem; }

/* verdict */
.verdict-top { display: flex; align-items: center; gap: 1rem; }
.ring { flex: 0 0 auto; width: 96px; height: 96px; }
.verdict-text { flex: 1 1 auto; min-width: 0; }
.verdict-text > * + * { margin-top: .35rem; }
.stat { display: block; }
.stat-num { display: block; }
.stat-cap { display: block; margin-top: .25rem; }

/* lists */
.points li { position: relative; padding-left: 1.5rem; }
.points li + li { margin-top: .7rem; }
.points li::before { content: ""; position: absolute; left: .2rem; top: .55em; width: .5rem; height: .5rem; }
.checklist li { padding-left: 2.1rem; }
.checklist li::before { left: 0; top: .15em; width: 1.3rem; height: 1.3rem; }
.stages li { padding-left: 1.1rem; }
.stages li::before { left: 0; top: .1em; width: .3rem; height: calc(100% - .2em); }

/* figure */
.place > * + * { margin-top: .6rem; }

/* compare */
.compare-grid { display: grid; gap: 1rem; }
.compare-panel { --flow: .75rem; padding: 1rem; }
.pill { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 44px; padding: 0 1.1rem; }

/* myth grid */
.myth-grid { display: grid; gap: .75rem; }
.myth-card { display: block; min-height: 44px; padding: 1rem 1.1rem; }
.myth-card-title, .myth-card-blurb { display: block; }
.myth-card-blurb { margin-top: .3rem; }

/* wave */
.wave { width: 100%; height: 96px; }

/* alarm card */
.alarm { display: flex; gap: 1rem; align-items: flex-start; }
.alarm-tile { flex: 0 0 auto; width: 52px; height: 52px; display: grid; place-items: center; }
.alarm-dot { width: 16px; height: 16px; }
.alarm-body { --flow: .9rem; flex: 1 1 auto; min-width: 0; }
.link-pair { padding: 0; margin: 0; list-style: none; }
.chip-link { display: inline-flex; align-items: center; min-height: 44px; padding: 0 1rem; }

/* notes */
.note-list { counter-reset: note; }
.note-list li { counter-increment: note; position: relative; padding-left: 2.2rem; }
.note-list li + li { margin-top: .5rem; }
.note-list li::before { content: counter(note); position: absolute; left: 0; top: .6rem; width: 1.6rem; text-align: right; }
.note-link { display: block; min-height: 44px; padding: .6rem 0; }
.note-list li:target { scroll-margin-top: 1rem; }
.ref { display: inline; padding: 13px 14px; margin: 0 -10px 0 -6px; position: relative; }
.inline-btn { display: inline-flex; align-items: center; min-height: 44px; padding: 0 .25rem; }

/* next link */
.next-row { padding: .5rem 0 0; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: .6rem 1.4rem; max-width: 100%; }

/* footer */
.site-foot { margin-top: 2.5rem; padding: 1.5rem 1.25rem; }
.foot-inner { --flow: 1rem; }
.index-list { display: grid; gap: .5rem; }
.index-link { display: flex; align-items: center; min-height: 48px; padding: .6rem 1rem; }

/* bottom anchor rail */
.rail { position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; padding: .4rem .5rem calc(.4rem + env(safe-area-inset-bottom)); }
.rail-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: .25rem; max-width: 34rem; margin: 0 auto; }
.rail-list a { display: flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 .25rem; text-align: center; }

@media (min-width: 40em) {
  .shell { padding: 0 1.5rem 8rem; }
  .card { padding: 1.6rem 1.75rem; }
  .card--hero, .card--graph { padding: 2rem 1.75rem; }
  .ring { width: 120px; height: 120px; }
  .compare-grid { grid-template-columns: 1fr 1fr; }
  .myth-grid { grid-template-columns: 1fr 1fr; }
  .index-list { grid-template-columns: 1fr 1fr; }
  .wave { height: 120px; }
  .alarm-tile { width: 60px; height: 60px; }
  .rail { left: 50%; right: auto; bottom: 1rem; transform: translateX(-50%); width: min(34rem, calc(100% - 2rem)); padding: .35rem; }
}
.compare.is-toggled .compare-grid { grid-template-columns: 1fr; }
.compare-panel[hidden], .compare-switch[hidden] { display: none; }