/* Fresh Off Patent
   Layout concept: a working copy of a US patent front page. White sheet, black line art,
   bibliographic fields labelled with their INID codes, and a yellow highlighter for the
   parts a reader marked. Drawings carry the visuals. */
:root {
  --sheet: #ffffff;
  --sheet-2: #f3f4f1;
  --ink: #111111;
  --ink-2: #3d3f3b;
  --ink-3: #6e716b;
  --line: #d9dbd5;
  --mark: #ffe45c;
  --mark-ink: #111111;
  --alert: #b3261e;
  --drawing-bg: #ffffff;
  --drawing-filter: invert(0);

  --display: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --ui: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --wrap: 1160px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --sheet: #121312;
    --sheet-2: #1b1c1a;
    --ink: #eeeeea;
    --ink-2: #c4c6bf;
    --ink-3: #8e9189;
    --line: #2e302c;
    --mark: #e8c63a;
    --mark-ink: #111111;
    --alert: #f2756b;
    --drawing-bg: #181917;
    --drawing-filter: invert(0.92);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--sheet);
  color: var(--ink);
  font: 18px/1.55 var(--body);
}
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--ink); background: var(--mark); color: var(--mark-ink); }
img { max-width: 100%; }
mark { background: var(--mark); color: var(--mark-ink); padding: 0 .12em; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
:focus-visible { outline: 3px solid var(--mark); outline-offset: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: 20px; }
.narrow { max-width: 720px; }

/* ---------- Header ---------- */
.mast { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-block: 18px; border-bottom: 2px solid var(--ink); flex-wrap: wrap; }
.wordmark {
  font: 800 30px/1 var(--display); font-stretch: 75%; letter-spacing: -0.01em; text-transform: uppercase;
  text-decoration: none; display: inline-flex; align-items: baseline; gap: .28em; white-space: nowrap;
}
.wordmark:hover { background: none; color: inherit; }
.wordmark .code { font: 500 12px/1 var(--mono); letter-spacing: 0; text-transform: none; color: var(--ink-3); }
.wordmark b { background: var(--mark); color: var(--mark-ink); padding: 0 .12em; font-weight: 800; }
.nav { display: flex; gap: 6px 22px; font: 600 15px/1 var(--ui); flex-wrap: wrap; align-items: center; }
.nav a { text-decoration: none; padding-block: 6px; }
.nav a[aria-current] { box-shadow: inset 0 -3px 0 var(--mark); }
.nav a:hover { background: none; box-shadow: inset 0 -3px 0 var(--ink); color: var(--ink); }
.nav .acct { font-weight: 500; color: var(--ink-3); }
.nav .cta { background: var(--ink); color: var(--sheet); padding: 9px 13px; }
.nav .cta:hover { background: var(--mark); color: var(--mark-ink); box-shadow: none; }
.biblio-line { font: 13px/1.4 var(--mono); color: var(--ink-3); display: flex; gap: 6px 22px; flex-wrap: wrap; padding-block: 10px; border-bottom: 1px solid var(--line); }
.biblio-line i { font-style: normal; color: var(--ink-2); }

/* ---------- Type ---------- */
h1, h2, h3 { font-family: var(--display); font-stretch: 80%; font-weight: 800; letter-spacing: -0.01em; line-height: 1.02; margin: 0 0 .45em; text-wrap: balance; }
h1 { font-size: clamp(40px, 6.4vw, 76px); text-transform: uppercase; }
h2 { font-size: clamp(26px, 3.4vw, 36px); text-transform: uppercase; }
h3 { font-size: 23px; font-stretch: 87%; font-weight: 700; line-height: 1.12; }
p { margin: 0 0 1em; }
.lede { font-size: clamp(19px, 2vw, 22px); line-height: 1.5; color: var(--ink-2); max-width: 46ch; }
.label { font: 500 12.5px/1.3 var(--mono); color: var(--ink-3); display: block; margin-bottom: 10px; }
.label b { font-weight: 500; color: var(--ink); }
.small { font-size: 15px; }
.muted { color: var(--ink-3); }
.mono, .num { font-family: var(--mono); font-size: .84em; font-variant-numeric: tabular-nums; }
.sans { font-family: var(--ui); }
.prose { max-width: 66ch; }
.prose h2 { margin-top: 1.6em; }
.prose li { margin-bottom: .4em; }

/* ---------- Buttons & forms ---------- */
.btn {
  display: inline-block; font: 700 16px/1 var(--ui); padding: 14px 18px; cursor: pointer;
  background: var(--ink); color: var(--sheet); border: 2px solid var(--ink); text-decoration: none;
}
.btn:hover { background: var(--mark); color: var(--mark-ink); border-color: var(--ink); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--mark); color: var(--mark-ink); }
.btn.wide { width: 100%; text-align: center; }
input[type=email], input[type=text], input[type=search], select {
  font: 16px/1.2 var(--ui); padding: 13px 12px; border: 2px solid var(--ink); background: var(--sheet);
  color: var(--ink); border-radius: 0; min-width: 0;
}
.signup { display: flex; max-width: 480px; }
.signup input { flex: 1; border-right: 0; }
.fineprint { font: 14px/1.45 var(--ui); color: var(--ink-3); margin-top: 10px; }
.flash { font: 16px/1.45 var(--ui); padding: 12px 14px; background: var(--mark); color: var(--mark-ink); margin: 18px 0; }

/* ---------- Drawings ---------- */
.sheetbox { background: var(--drawing-bg); border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.sheetbox img { display: block; max-width: 100%; max-height: 100%; object-fit: contain; filter: var(--drawing-filter); }
.fig { font: italic 600 15px/1 var(--body); letter-spacing: .02em; }

/* ---------- Home ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 56px; padding-block: 48px 40px; align-items: start; }
.hero h1 { margin-bottom: .3em; }
.hero-fig { margin: 0; }
.hero-fig .sheetbox { aspect-ratio: 4 / 5; padding: 22px; }
.hero-fig figcaption { display: flex; justify-content: space-between; gap: 12px; font: 13px/1.4 var(--mono); color: var(--ink-3); padding-top: 10px; }
.hero-fig figcaption a { color: var(--ink); }

.counts { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 2px solid var(--ink); }
.counts div { padding: 18px 18px 18px 0; }
.counts div + div { padding-left: 18px; border-left: 1px solid var(--line); }
.counts b { display: block; font: 800 44px/1 var(--display); font-stretch: 75%; font-variant-numeric: tabular-nums; margin-bottom: 6px; }
.counts span { font: 15px/1.35 var(--ui); color: var(--ink-2); }

.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin: 52px 0 18px; flex-wrap: wrap; }
.section-head h2 { margin: 0; }
.section-head a { font: 600 15px/1 var(--ui); }

/* Picks as drawing sheets */
.sheets { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px 28px; }
.sheets li { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.sheets .sheetbox { aspect-ratio: 1; padding: 16px; position: relative; text-decoration: none; }
.sheets .sheetbox:hover { background: var(--drawing-bg); border-color: var(--ink); }
.sheets .no { position: absolute; top: 10px; left: 12px; font: 600 13px/1 var(--mono); color: var(--ink-3); background: var(--drawing-bg); padding: 2px 4px; }
.sheets h3 { margin: 0; }
.sheets h3 a { text-decoration: none; }
.sheets p { margin: 0; color: var(--ink-2); font-size: 16px; }
.sheets .locked h3 { color: var(--ink-3); }

/* ---------- Ledger (full weekly list) ---------- */
.ledger { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.row { display: grid; grid-template-columns: 52px 120px minmax(0, 1fr) 128px; gap: 22px; padding-block: 22px; border-bottom: 1px solid var(--line); align-items: start; }
.rank { font: 800 34px/1 var(--display); font-stretch: 75%; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.thumb { width: 120px; height: 120px; padding: 8px; }
.row h3 { margin: 0 0 6px; }
.row h3 a { text-decoration: none; }
.row h3 a:hover { text-decoration: none; }
.row p { margin: 0 0 8px; color: var(--ink-2); font-size: 16px; }
.meta { font: 13px/1.5 var(--mono); color: var(--ink-3); display: flex; flex-wrap: wrap; gap: 2px 16px; }
.meta .cat { font: 600 13px/1.5 var(--ui); color: var(--ink); }
.score { text-align: right; }
.score b { font: 800 40px/1 var(--display); font-stretch: 75%; display: block; font-variant-numeric: tabular-nums; }
.score small { font: 12px/1.2 var(--mono); color: var(--ink-3); }
.bars { margin-top: 12px; display: grid; gap: 5px; }
.bar { display: grid; grid-template-columns: 1fr 54px; align-items: center; gap: 6px; font: 11px/1 var(--mono); color: var(--ink-3); text-align: left; }
.bar i { display: block; height: 6px; background: var(--sheet-2); position: relative; }
.bar i::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--v); background: var(--ink); }
.row.locked h3 { color: var(--ink-3); font-stretch: 100%; font-weight: 600; font-size: 17px; text-transform: uppercase; }
.row.locked .score b { color: var(--line); }
.lock { font: 700 11px/1 var(--ui); text-transform: uppercase; letter-spacing: .06em; background: var(--ink); color: var(--sheet); padding: 4px 6px; margin-left: 6px; vertical-align: 3px; text-decoration: none; }
.lock:hover { background: var(--mark); color: var(--mark-ink); }
.upsell { padding-block: 24px; border-bottom: 1px solid var(--line); font: 17px/1.5 var(--ui); display: flex; gap: 18px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.upsell.boxed { background: var(--sheet-2); padding: 22px; border: 0; margin-top: 28px; }

/* ---------- Filters ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; padding-block: 18px; font: 15px/1.2 var(--ui); }
.filters label { display: grid; gap: 6px; font: 12px/1 var(--mono); color: var(--ink-3); }
.filters select, .filters input { padding: 10px; font-size: 15px; border-width: 1px; }
.weeks { display: flex; gap: 4px 18px; flex-wrap: wrap; font: 14px/1.3 var(--mono); padding-top: 14px; }
.weeks a { text-decoration: none; color: var(--ink-3); }
.weeks a[aria-current] { color: var(--mark-ink); background: var(--mark); padding: 0 4px; }

/* ---------- Patent page ---------- */
.doc { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 56px; padding-block: 40px 64px; }
.doc h1 { font-size: clamp(36px, 5vw, 58px); }
.figs { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 14px; margin: 28px 0; }
.figs a { aspect-ratio: 1; padding: 12px; text-decoration: none; }
.figs a:hover { background: var(--drawing-bg); border-color: var(--ink); }
.block { margin-top: 36px; }
.block h2 { font: 500 13px/1.3 var(--mono); text-transform: none; color: var(--ink-3); margin-bottom: 10px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.block h2 b { color: var(--ink); font-weight: 500; }
.claimtext { font: 16px/1.65 var(--body); color: var(--ink-2); background: var(--sheet-2); padding: 16px 18px; max-height: 20em; overflow: auto; }
.side { font: 15px/1.5 var(--ui); display: grid; gap: 18px; align-content: start; }
.side .box { border: 2px solid var(--ink); padding: 18px; }
.side .box.plain { border: 1px solid var(--line); }
.side dl { margin: 0; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 9px 12px; }
.side dt { font: 12.5px/1.4 var(--mono); color: var(--ink-3); }
.side dd { margin: 0; font: 13.5px/1.4 var(--mono); text-align: right; overflow-wrap: anywhere; }
.bigscore { font: 800 76px/0.9 var(--display); font-stretch: 75%; font-variant-numeric: tabular-nums; }
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { padding: 0 0 14px 22px; position: relative; }
.timeline li::before { content: ""; position: absolute; left: 3px; top: 7px; width: 9px; height: 9px; border: 2px solid var(--ink); background: var(--sheet); }
.timeline li::after { content: ""; position: absolute; left: 8px; top: 18px; bottom: 0; width: 1px; background: var(--line); }
.timeline li:last-child::after { display: none; }
.timeline li.hot::before { background: var(--mark); }
.timeline b { font-weight: 700; display: block; }
.timeline span { font: 12.5px/1.4 var(--mono); color: var(--ink-3); }
.links { list-style: none; margin: 0; padding: 0; }
.links li + li { border-top: 1px solid var(--line); }
.links a { display: flex; justify-content: space-between; padding: 9px 0; text-decoration: none; font-weight: 600; }
.links a::after { content: "↗"; color: var(--ink-3); }
.examples { list-style: none; padding: 0; margin: 0 0 12px; }
.examples li { padding: 10px 0; border-bottom: 1px solid var(--line); font: 16px/1.4 var(--ui); display: flex; justify-content: space-between; gap: 14px; }
.examples .price { font-family: var(--mono); white-space: nowrap; }
.warn { border-left: 4px solid var(--alert); padding: 2px 0 2px 14px; font: 16px/1.5 var(--ui); }
.paywall { border: 2px solid var(--ink); padding: 28px; margin-top: 32px; font-family: var(--ui); }
.fade { position: relative; max-height: 12em; overflow: hidden; }
.fade::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 7em; background: linear-gradient(transparent, var(--sheet)); }

/* ---------- Pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin: 32px 0; border: 2px solid var(--ink); }
.plan { padding: 28px 24px; display: flex; flex-direction: column; font-family: var(--ui); min-width: 0; }
.plan + .plan { border-left: 1px solid var(--line); }
.plan.feature { background: var(--sheet-2); }
.plan h3 { font-size: 30px; text-transform: uppercase; margin-bottom: 4px; }
.plan .price { font: 800 54px/1 var(--display); font-stretch: 75%; margin: 18px 0 4px; }
.plan .price small { font: 500 15px/1 var(--mono); color: var(--ink-3); }
.plan ul { list-style: none; padding: 0; margin: 20px 0 26px; font-size: 16px; flex: 1; }
.plan li { padding: 8px 0 8px 22px; border-top: 1px solid var(--line); position: relative; }
.plan li::before { content: ""; position: absolute; left: 0; top: 15px; width: 10px; height: 6px; background: var(--mark); }
.plan form { margin: 0; }
.toggle { font: 600 15px/1 var(--ui); display: inline-flex; border: 2px solid var(--ink); }
.toggle a { padding: 10px 14px; text-decoration: none; }
.toggle a[aria-current] { background: var(--ink); color: var(--sheet); }
.faq dt { font: 700 18px/1.3 var(--ui); margin-top: 22px; }
.faq dd { margin: 6px 0 0; color: var(--ink-2); }

/* ---------- Tables ---------- */
.tablewrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font: 15px/1.4 var(--ui); }
table.data th { text-align: left; font: 500 12px/1.3 var(--mono); color: var(--ink-3); border-bottom: 2px solid var(--ink); padding: 8px 12px 8px 0; white-space: nowrap; }
table.data td { border-bottom: 1px solid var(--line); padding: 11px 12px 11px 0; vertical-align: top; }
table.data td.mono { white-space: nowrap; }

/* ---------- Method steps ---------- */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps > li { counter-increment: step; display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 0 18px; padding-block: 20px; border-top: 1px solid var(--line); }
.steps > li::before { content: counter(step); font: 800 40px/1 var(--display); font-stretch: 75%; }
.steps h3 { text-transform: uppercase; }

/* ---------- Footer ---------- */
footer { border-top: 2px solid var(--ink); margin-top: 72px; padding-block: 28px 44px; font: 15px/1.6 var(--ui); color: var(--ink-3); }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
footer a { color: var(--ink-2); text-decoration: none; display: block; }
footer .wordmark { font-size: 24px; color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .sheets { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; gap: 30px; padding-top: 30px; }
  .hero-fig .sheetbox { aspect-ratio: 4 / 3; }
  .doc { grid-template-columns: 1fr; gap: 12px; }
  .plans { grid-template-columns: 1fr; }
  .plan + .plan { border-left: 0; border-top: 1px solid var(--line); }
  .counts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .counts div:nth-child(3) { padding-left: 0; border-left: 0; }
  .counts div:nth-child(n+3) { border-top: 1px solid var(--line); }
  footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .sheets { grid-template-columns: 1fr; }
  .row { grid-template-columns: 84px minmax(0, 1fr); gap: 14px; }
  .row .rank { display: none; }
  .thumb { width: 84px; height: 84px; }
  .row .score { grid-column: 2; text-align: left; display: flex; align-items: baseline; gap: 10px; }
  .row .score b { font-size: 28px; display: inline; }
  .row .bars { display: none; }
  .signup { flex-direction: column; gap: 8px; }
  .signup input { border-right: 2px solid var(--ink); }
  .biblio-line span:nth-child(n+3) { display: none; }
}
@media (prefers-reduced-motion: no-preference) {
  .sheets .sheetbox img, .row .thumb img { transition: transform .25s ease; }
  .sheets .sheetbox:hover img { transform: scale(1.03); }
}

/* ---------- Interest picker & track tabs ---------- */
.picker { margin: 18px 0 8px; }
.picks { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); margin-bottom: 18px; }
.pick { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 10px; padding: 12px 12px 12px 0; border-bottom: 1px solid var(--line); cursor: pointer; font-family: var(--ui); }
.pick input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--ink); }
.pick b { display: block; font-size: 16px; }
.pick small { display: block; font-size: 13.5px; line-height: 1.4; color: var(--ink-3); }
.pick:has(input:checked) b { background: var(--mark); color: var(--mark-ink); display: inline; padding: 0 .15em; }
.tracks { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px 0 4px; font: 600 14px/1 var(--ui); }
.tracks a { text-decoration: none; border: 1px solid var(--line); padding: 8px 10px; display: inline-flex; gap: 6px; align-items: baseline; }
.tracks a span { font: 500 12px/1 var(--mono); color: var(--ink-3); }
.tracks a.mine { border-color: var(--ink-3); }
.tracks a[aria-current] { background: var(--ink); color: var(--sheet); border-color: var(--ink); }
.tracks a[aria-current] span { color: var(--sheet); }
.tracks a:hover { background: var(--mark); color: var(--mark-ink); }
.others { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.others li { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); min-width: 0; }
.others b { font: 800 19px/1.1 var(--display); font-stretch: 80%; text-transform: uppercase; display: block; margin-bottom: 4px; }
.others span { font: 12.5px/1.3 var(--mono); color: var(--ink-3); }
.others p { margin: 6px 0 0; font-size: 15px; color: var(--ink-2); }
.others a { text-decoration: none; }
@media (max-width: 880px) { .others { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .picks, .others { grid-template-columns: 1fr; } }

/* ---------- FIG. 1 scoring diagram ---------- */
.fig-scoring { margin: 8px 0 0; }
.fig-scoring svg { display: block; width: 100%; height: auto; max-width: 860px; }
.fig-scoring figcaption { font: 15px/1.5 var(--ui); color: var(--ink-2); max-width: 70ch; margin-top: 10px; }
.score-split { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 40px; align-items: start; }
@media (max-width: 880px) { .score-split { grid-template-columns: 1fr; } }

/* Pro teasers: drawings slightly out of focus */
.row.locked .thumb img, .sheets .locked .sheetbox img { filter: var(--drawing-filter) blur(2.5px); opacity: .85; }