/* bitcoinbiblestudy.com: the Timechain theme (picked by Dennis 2026-10-19). Shared by every page in site/.
   Bitcoin orange on clean paper, IBM Plex type, the eight weeks drawn as a chain of blocks.
   Layout first, then the theme's tokens and details. */
* { box-sizing: border-box; }
body { background: var(--bg); color: var(--ink); font-family: var(--body); font-size: var(--size, 1.0625rem);
  line-height: 1.65; margin: 0; padding: 0 1rem; }
h1, h2, h3 { font-family: var(--display); font-weight: var(--display-weight, 500); text-wrap: balance; }
.label { font-family: var(--label); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); }
main { max-width: 44rem; margin: 0 auto; padding-block: 3.5rem 4rem; }
header.masthead { text-align: center; margin-bottom: 3rem; }
.scales { font-size: 1.5rem; color: var(--accent); margin-bottom: 1.2rem; }
.masthead h1 { font-size: clamp(2.1rem, 7vw, 3.2rem); line-height: 1.1; margin: 0.7rem 0 1rem; }
.masthead .subtitle { font-size: 1.15rem; font-style: italic; color: var(--soft); max-width: 34rem; margin: 0 auto; }
.verse { margin: 2rem auto 0; max-width: 30rem; font-style: italic; color: var(--soft); }
.verse cite { display: block; font-style: normal; margin-top: 0.4rem; color: var(--accent); font-size: 0.9rem; }
.sc { font-variant: small-caps; }
.get { background: var(--panel); padding: 1.6rem 1.5rem 1.5rem; margin: 0 0 3.5rem; }
.get h2 { font-size: 1.45rem; margin: 0.3rem 0 0.4rem; }
.get p { margin: 0 0 1rem; color: var(--soft); }
form { margin: 0; }
.row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
input[type=email] { flex: 1 1 15rem; min-width: 0; font: inherit; padding: 0.7rem 0.85rem; color: var(--ink);
  background: var(--field); border: 1px solid var(--rule); border-radius: var(--radius, 3px); }
input[type=email]:focus-visible, button:focus-visible, .check input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button { flex: 0 0 auto; font-family: var(--label); font-size: 0.95rem; font-weight: 700; letter-spacing: 0.03em;
  padding: 0.7rem 1.3rem; color: var(--on-button); background: var(--button); border: 0;
  border-radius: var(--radius, 3px); cursor: pointer; }
button:hover { filter: brightness(1.08); }
.check { display: flex; gap: 0.55rem; align-items: flex-start; margin: 0.9rem 0 0; font-size: 0.97rem; color: var(--soft); }
.check input { margin-top: 0.35rem; accent-color: var(--accent); }
.fine { font-size: 0.88rem; color: var(--muted); margin: 0.9rem 0 0; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.status { margin: 1rem 0 0; }
.status.ok { color: var(--ink); } .status.err { color: var(--warn); }
section { margin: 0 0 3.2rem; }
section h2 { font-size: 1.4rem; margin: 0 0 0.9rem; }
section p { margin: 0 0 1rem; }
ol.arc { list-style: none; margin: 0; padding: 0; counter-reset: wk; }
ol.arc li { counter-increment: wk; display: grid; grid-template-columns: 2.2rem 1fr; gap: 0.8rem; padding: 0.55rem 0;
  border-bottom: 1px solid var(--rule); align-items: baseline; }
ol.arc li::before { content: counter(wk); font-family: var(--display); font-size: 1.3rem; color: var(--accent); text-align: center; }
ol.arc .tag { display: block; font-size: 0.93rem; color: var(--muted); }
.inside { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.inside > div { min-width: 0; }
.inside h3 { font-size: 1.12rem; margin: 0 0 0.3rem; }
.inside p { font-size: 0.97rem; color: var(--soft); margin: 0; }
.books .inside { row-gap: 1.6rem; }
.books h3 a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 0.18em; }
.books h3 a:hover { color: var(--accent); }
.inside p.by { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.35rem; }
@media (max-width: 34rem) { .inside { grid-template-columns: 1fr; } }
.honest { border-block: 1px solid var(--rule); padding-block: 1.4rem; }
.honest p:last-child { margin-bottom: 0; }
footer { text-align: center; color: var(--muted); font-size: 0.88rem; font-style: italic; }
a { color: var(--ink); text-decoration-color: var(--accent); text-underline-offset: 0.15em; }
a:hover { color: var(--accent); }

:root { --bg: #FAFAF7; --panel: #F1F0EA; --field: #FFFFFF; --ink: #1B1B1F; --soft: #3B3B42; --muted: #6B6B74;
  --accent: #C86A00; --orange: #F7931A; --rule: #DEDCD3; --warn: #B3261E; --button: #F7931A; --on-button: #1B1B1F;
  --display: 'IBM Plex Sans Condensed', 'Arial Narrow', sans-serif; --body: 'IBM Plex Serif', Georgia, serif;
  --label: 'IBM Plex Mono', ui-monospace, monospace; --display-weight: 700; --radius: 2px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --bg: #121214; --panel: #1C1C20; --field: #0C0C0E;
  --ink: #EDEDF0; --soft: #C9C9D0; --muted: #8E8E98; --accent: #F7931A; --rule: #2E2E35; --warn: #F2867E;
  color-scheme: dark; } }
:root[data-theme="dark"] { --bg: #121214; --panel: #1C1C20; --field: #0C0C0E; --ink: #EDEDF0; --soft: #C9C9D0;
  --muted: #8E8E98; --accent: #F7931A; --rule: #2E2E35; --warn: #F2867E; color-scheme: dark; }
.label { font-weight: 500; letter-spacing: 0.08em; }
header.masthead { text-align: left; }
.masthead .subtitle, .verse { margin-left: 0; }
.masthead h1 { font-size: clamp(2.3rem, 8vw, 3.6rem); text-transform: uppercase; letter-spacing: 0.01em; line-height: 1; }
/* The site mark (site/favicon.svg) in place of the pages' ⚖ glyph, which some systems draw as a color emoji. */
.scales { display: block; width: 2.6rem; height: 2.6rem; font-size: 0; color: transparent; letter-spacing: 0;
  background: center / contain no-repeat url("data:image/svg+xml;base64,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"); }
.verse { border-left: 3px solid var(--orange); padding-left: 1rem; }
.get { border: 1px solid var(--rule); border-top: 4px solid var(--orange); }
ol.arc { display: grid; gap: 0.7rem; }
ol.arc li { border: 1px solid var(--rule); background: var(--panel); padding: 0.7rem 0.9rem; position: relative;
  grid-template-columns: 4.6rem 1fr; }
ol.arc li:not(:last-child)::after { content: ''; position: absolute; left: 2.4rem; bottom: -0.75rem; width: 2px;
  height: 0.7rem; background: var(--orange); }
ol.arc li::before { content: 'BLOCK ' counter(wk); font-family: var(--label); font-size: 0.7rem; letter-spacing: 0.06em;
  color: var(--accent); text-align: left; }
section h2 { text-transform: uppercase; letter-spacing: 0.02em; }
.inside > div { border-left: 3px solid var(--orange); padding-left: 0.9rem; }
footer { font-style: normal; font-family: var(--label); font-size: 0.78rem; }

/* page details */
.status a { color: inherit; }
.done h2 { margin-top: 0.3rem; }