/* ============================================================
   Ebb — warm glass over a tidal flat.

   One photograph runs behind every page: braided channels cut into
   wet sand at low water, gold in a low sun ("退潮后的潮间带长出河川般的潮沟",
   CC BY-SA 4.0 — see data/photo-candidates.json and credits.html).
   An ebb is the tide going out, and those channels are the paths
   the water took on the way down: a line at every level it passed
   through, which is what a falling-price sale is.

   THE SURFACE DIVISION, and the stylesheet must obey it — the live
   audit re-checks every text node against it:

     .sheet   thin glass (54%)  display type and graphic panels only
     .card    body card (66%)   every paragraph, label and number
     .slab    dense (82%)       figures, tables, long lists

   Every word sits on a surface of its own — card, sheet, chip — and
   never on the bare photograph, because every contrast failure this
   family of sites has ever shipped was a sentence standing on a
   picture. Bands are THIN: a large pale pane over a photograph IS a
   fill, whatever the CSS says.

   COLOUR IS NOT DEFINED HERE. css/tokens.css is generated by
   tools/palette.mjs, which solves each colour in OKLCh against the
   gamut at its own lightness and refuses to write the file unless
   every pair holds. tools/validate.mjs refuses a chromatic literal
   typed into this file: a brand hue typed by hand is what drifts.

   TWO COLOURS CARRY MEANING AND ONLY TWO:
     flood  a sale whose price is STILL FALLING
     silt   a sale that has come to rest at its floor
   Neither is ever used to mean "important". Every state chip also
   carries its state as a WORD, so the colour is never the only
   thing saying it.
   ============================================================ */
@import url("tokens.css");

:root {
  --r: 26px;
  --r-sm: 18px;
  --r-xs: 12px;
  /* 1200px put the cards within 24px of a 1280 viewport's edges and the
     photograph only showed between them. 1124 leaves a real margin of picture
     down both sides, which is most of the difference between this page's
     flat% and the reference's. */
  --maxw: 1124px;

  --serif: "Bodoni Moda", "Didot", "Bodoni 72", Georgia, serif;
  --sans: "Albert Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Red Hat Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--ground-fill);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select { font: inherit; color: inherit; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.mono, code { font-family: var(--mono); font-size: .9em; }
.num { font-variant-numeric: tabular-nums; }
.up { color: var(--up); }
.down { color: var(--down); }
.muted { color: var(--ink-3); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
::selection { background: var(--wash-2); }
:focus-visible { outline: 2px solid var(--silt); outline-offset: 2px; }

/* ---------- the photograph ---------- */
.ground {
  position: fixed; inset: -40px; z-index: -3;
  /* The lock chamber, its gates and the paddle gear sit across the middle of
     the frame; the towpath runs out to the right and open grass fills the
     bottom. `cover` scales by the CONSTRAINED axis, so on a wide window the
     horizontal position does almost nothing and the vertical one does all the
     work: at 48% down the hero sat entirely on grass and towpath with the lock
     itself above the fold. 34% brings the gates and the white balance beams
     into the band the hero occupies, which is the half of the picture that is
     about the product. */
  background: var(--ground-fill) url("../img/ground.jpg") 50% 34% / cover no-repeat;
}
@media (max-width: 760px) { .ground { background-image: url("../img/ground-1280.jpg"); background-position: 46% 40%; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font-family: var(--sans); font-weight: 600; font-size: 15px; letter-spacing: -.005em;
  padding: 11px 20px; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; white-space: nowrap; user-select: none;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease, color .2s ease, opacity .2s;
}
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none !important; }
.btn-lg { padding: 15px 28px; font-size: 16px; }
.btn-sm { padding: 7px 14px; font-size: 13.5px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--silt); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--silt-2); transform: translateY(-1px); box-shadow: 0 10px 24px rgba(var(--ink-rgb), .30); }
.btn-fruit { background: var(--flood); color: #fff; }
.btn-fruit:hover:not(:disabled) { background: var(--flood-2); transform: translateY(-1px); box-shadow: 0 10px 24px rgba(var(--flood-rgb), .30); }
.btn-oil { background: var(--sand); color: var(--sand-ink); }
.btn-oil:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(var(--sand-rgb), .45); }
.btn-glass { background: rgba(255, 255, 255, .86); color: var(--ink); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.btn-glass:hover:not(:disabled) { background: #fff; transform: translateY(-1px); }
.btn-quiet { background: var(--wash); color: var(--ink); }
.btn-quiet:hover:not(:disabled) { background: var(--wash-2); }
.btn .arrow {
  display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 999px;
  background: rgba(255, 255, 255, .2); font-size: 13px; line-height: 1; margin-right: -8px;
}
.btn-glass .arrow, .btn-quiet .arrow { background: var(--wash); }

/* ---------- chips / eyebrows ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 13px; border-radius: 999px; font-size: 13px; font-weight: 500;
  background: rgba(255, 255, 255, .86); color: var(--ink-2);
  backdrop-filter: var(--blur-lite); -webkit-backdrop-filter: var(--blur-lite);
}
.chip b { color: var(--ink); font-weight: 600; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--up); animation: pulse 2.2s infinite; flex: none; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(var(--up-rgb), .45); } 70% { box-shadow: 0 0 0 9px rgba(var(--up-rgb), 0); } 100% { box-shadow: 0 0 0 0 rgba(var(--up-rgb), 0); } }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  /* --ink, not --ink-2: an eyebrow sits on the thinnest glass (--head), and tools/contrast.mjs
     measured --ink-2 there at 3.63:1 over the bright sky in the photograph. The gold dash carries
     the colour. */
  color: var(--ink);
}
.eyebrow::before { content: ""; width: 18px; height: 2px; border-radius: 2px; background: var(--sand); }
/* A stop's state, as a tinted chip. The TEXT is the darkest ink; the colour
   only tints the background — colour at 11px does not carry enough contrast to
   be the thing that says it, so the chip always contains the WORD as well.
   lives in the tint — 11.5px type in a hue measured under 4.5:1 on a sibling. */
.kind { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--ink); }
.kind.armed { background: var(--haze); }   /* waiting: the gate is shut */
.kind.open { background: var(--sand); }    /* the gate is open: anyone may take it */
.kind.gone { background: var(--wash-2); } /* filled, cancelled or expired */

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 60; padding: 14px 0; }
.nav-inner {
  position: relative; display: flex; align-items: center; gap: 20px; height: 62px; padding: 0 10px 0 14px;
  border-radius: 999px; background: rgba(var(--glass), .76);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  box-shadow: 0 2px 12px rgba(var(--ink-rgb), .08);
  transition: background .25s, box-shadow .25s;
}
.nav.scrolled .nav-inner { background: rgba(var(--glass), .9); box-shadow: 0 10px 30px rgba(var(--ink-rgb), .14); }
.brand { display: flex; align-items: center; gap: 8px; flex: none; }
.brand [data-mark] { display: block; width: 32px; height: 32px; }
.brand [data-mark] svg { display: block; width: 100%; height: 100%; }
.brand-name { font-family: var(--serif); font-weight: 500; font-size: 28px; letter-spacing: -.01em; line-height: 1; margin-top: 1px; color: var(--ink); }
.nav-links { display: flex; gap: 2px; margin-left: 4px; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--ink-2); padding: 8px 12px; border-radius: 999px; transition: background .15s, color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--ink); background: var(--wash); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.nav-burger { display: none; width: 42px; height: 42px; border-radius: 999px; border: 0; background: var(--wash); cursor: pointer; place-items: center; }
.nav-burger svg { display: block; }
.icon-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 999px; background: var(--wash-2); color: var(--ink); flex: none; }
.icon-btn svg { display: block; width: 17px; height: 17px; fill: currentColor; }
@media (max-width: 1000px) {
  .nav-links { display: none; }
  .nav-burger { display: grid; flex: none; }
  .nav-inner { gap: 10px; padding-right: 8px; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; position: absolute; left: 0; right: 0; top: 72px;
    padding: 12px; border-radius: 22px; background: rgba(var(--glass), .97); box-shadow: var(--shadow);
  }
  .nav.open .nav-links a { padding: 12px 14px; font-size: 16px; }
}
@media (max-width: 520px) {
  .nav .wrap { padding: 0 12px; }
  .nav-inner { height: 58px; padding-left: 12px; }
  .brand-name { font-size: 25px; }
  .nav-right .btn { padding: 9px 14px; font-size: 14px; }
  .nav-right .btn .arrow { display: none; }
}

/* ---------- hero ---------- */
.hero { padding: 26px 0 30px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); gap: 18px; align-items: start; }
.hero-card {
  position: relative; padding: 44px 46px 36px; border-radius: 40px;
  /* THE THIN SHEET. It carries display type and nothing else: at 54% over this
     photograph the palette proves 3:1 for large type at both ends of the
     picture and does NOT prove 4.5:1 for prose. The first draft put the whole
     hero — paragraph, chips, figures — on a 46% sheet, and the sentences stood
     on grass and brick. The prose moved to `.hero-body` below, which is a body
     card. */
  background: var(--surface);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  box-shadow: 0 40px 100px rgba(var(--ink-rgb), .18);
  display: flex; flex-direction: column;
}
/* The body card INSIDE the hero sheet. It composites over the sheet, not over
   the photograph, which is why the palette proves it separately. */
.hero-body {
  margin-top: 18px; padding: 22px 24px 24px; border-radius: 28px;
  background: rgba(var(--glass), .40);
}
.hero-body > p { color: var(--ink-2); font-size: 16.5px; }
.hero-body > p + p { margin-top: 12px; }
.wordmark {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--serif); font-weight: 500; font-size: clamp(58px, 7vw, 96px);
  line-height: .9; letter-spacing: -.03em; margin: 22px 0 14px; color: var(--ink);
}
.wordmark [data-mark] { width: .8em; height: .8em; flex: none; margin-top: -.06em; }
.wordmark [data-mark] svg { width: 100%; height: 100%; display: block; }
.hero h1 {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(30px, 3.4vw, 44px); line-height: 1.06; letter-spacing: -.015em; color: var(--ink);
}
.hero h1 em { font-style: italic; color: var(--flood); }
.hero .lede { max-width: 560px; margin-top: 14px; font-size: 17.5px; color: var(--ink-2); }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: auto; padding-top: 30px; }
.stat { padding: 14px 16px; border-radius: var(--r-sm); background: var(--surface-2); }
.stat:nth-child(2) { background: var(--surface-3); }
.stat .k { font-size: 11.5px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); }
.stat .v { font-family: var(--serif); font-weight: 500; font-size: 32px; line-height: 1.1; margin-top: 4px; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.stat .s { font-size: 12.5px; color: var(--ink-2); margin-top: 2px; }
.skel { display: inline-block; min-width: 3.2em; height: .9em; border-radius: 6px; background: linear-gradient(90deg, rgba(var(--ink-rgb), .08), rgba(var(--ink-rgb), .16), rgba(var(--ink-rgb), .08)); background-size: 200% 100%; animation: sk 1.3s infinite linear; vertical-align: -.05em; }
@keyframes sk { to { background-position: -200% 0; } }

/* ---------- the live board of stops beside the hero ---------- */
.board {
  padding: 26px 24px 22px; border-radius: 40px; display: flex; flex-direction: column; gap: 14px;
  align-self: start;
  background: var(--surface-2);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  box-shadow: 0 40px 100px rgba(var(--ink-rgb), .18);
}
.board-top h3 { font-family: var(--serif); font-weight: 500; font-size: 32px; line-height: 1.02; letter-spacing: -.012em; }
.board-top .sub { font-size: 14px; color: var(--ink-2); margin-top: 6px; }
.seg { display: inline-flex; padding: 4px; border-radius: 999px; background: var(--wash-2); gap: 2px; }
.seg button { border: 0; background: transparent; padding: 7px 15px; border-radius: 999px; font-weight: 600; font-size: 14px; color: var(--ink); cursor: pointer; }   /* --ink: --ink-2 on the tinted track measured 4.50:1, under the bar by a hair */
.seg button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 4px rgba(var(--ink-rgb), .12); }
.board-tools { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.board-tools .when { font-size: 13px; color: var(--ink-2); }
.rows { list-style: none; display: grid; gap: 4px; }
.rows li { display: grid; grid-template-columns: 40px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 7px 12px 7px 8px; border-radius: 14px; background: rgba(255, 255, 255, .66); }
.rows li:nth-child(even) { background: rgba(255, 255, 255, .56); }
.rows .t { display: block; font-weight: 700; font-size: 14.5px; line-height: 1.2; }
.rows .n { display: block; font-size: 12px; color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rows .r { text-align: right; font-variant-numeric: tabular-nums; font-size: 15px; font-weight: 700; line-height: 1.2; }
.rows .r small { display: block; font-size: 11.5px; font-weight: 500; color: var(--ink-2); }
.board-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border-radius: 16px; background: var(--surface-3); font-size: 13px; color: var(--ink-2); }
.board-foot b { color: var(--ink); }
.tk {
  flex: none; width: 40px; height: 40px; border-radius: 13px; display: grid; place-items: center;
  font-size: 9.5px; font-weight: 800; letter-spacing: .02em; color: #fff; line-height: 1; background: var(--silt);
}
.tk.open { background: var(--flood); }
.spark { display: block; width: 100%; height: 22px; }
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { padding: 34px 24px 26px; border-radius: 32px; }
  .board { border-radius: 32px; }
}
@media (max-width: 560px) {
  /* The block number goes at phone width: with it the chip wrapped into a ragged two-line block. */
  #tip { display: none; }
  .hero .chip { white-space: nowrap; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-stats .stat:last-child { grid-column: span 2; }
  .board-top h3 { font-size: 27px; }
  .wordmark { gap: 10px; }
}

/* ---------- thin strip ---------- */
.strip { padding: 6px 0 20px; }
.strip-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.strip .chip { font-size: 13.5px; padding: 8px 15px; }

/* ---------- sections ---------- */
.section { padding: 64px 0; }
.band { background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0, rgba(255, 255, 255, .07) 120px, rgba(255, 255, 255, .07) calc(100% - 120px), rgba(255, 255, 255, 0) 100%); }
.section-head {
  max-width: 800px; margin: 0 auto 34px; text-align: center;
  padding: 26px 34px 28px; border-radius: 34px; background: var(--head);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
}
.section-head h2 { font-family: var(--serif); font-weight: 500; font-size: clamp(34px, 4.2vw, 52px); line-height: 1.04; letter-spacing: -.02em; margin-top: 10px; }
.section-head h2 em { font-style: italic; color: var(--flood); }
.section-head p { color: var(--ink-2); font-size: 17px; margin-top: 12px; }

.card {
  padding: 26px 26px 24px; border-radius: var(--r); background: var(--surface-2);
  backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
}
.card h3 { font-family: var(--serif); font-weight: 500; font-size: 24px; line-height: 1.12; letter-spacing: -.01em; }
.card p { color: var(--ink-2); margin-top: 8px; font-size: 15.5px; }
.card p + p { margin-top: 10px; }

/* how it works: four steps, the life of one stop */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.steps .card:nth-child(odd) { background: var(--surface-3); }
.step-n { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 999px; background: var(--silt); color: #fff; font-weight: 700; font-size: 15px; margin-bottom: 14px; }
.steps .card:nth-child(4) .step-n { background: var(--flood); }
@media (max-width: 1000px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .steps { grid-template-columns: 1fr; } }

/* the two things you can write */
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pair .card { padding: 30px 30px 28px; }
.pair .card:first-child { background: var(--surface-3); }
.pair h3 { font-size: 30px; display: flex; align-items: center; gap: 12px; }
.outcomes { list-style: none; display: grid; gap: 8px; margin-top: 18px; }
.outcomes li { padding: 12px 14px; border-radius: 14px; background: rgba(255, 255, 255, .66); font-size: 14.5px; color: var(--ink-2); }
.outcomes li b { color: var(--ink); }
.outcomes li.cost { background: var(--flood-wash); }
@media (max-width: 860px) { .pair { grid-template-columns: 1fr; } }

/* the story */
.story { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 16px; align-items: stretch; }
.story blockquote { font-family: var(--serif); font-style: italic; font-weight: 500; font-size: clamp(24px, 2.6vw, 31px); line-height: 1.22; letter-spacing: -.01em; color: var(--ink); }
.story cite { display: block; margin-top: 16px; font-style: normal; font-size: 14px; color: var(--ink-2); }
.story .card:first-child { background: var(--surface-3); padding: 36px 36px 32px; }
@media (max-width: 860px) { .story { grid-template-columns: 1fr; } }

/* the honest part */
.cost-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.cost-grid .card:nth-child(2) { background: var(--surface-3); }
.big { font-family: var(--serif); font-weight: 500; font-size: 34px; line-height: 1; letter-spacing: -.02em; color: var(--ink); font-variant-numeric: tabular-nums; }
.big.flame { color: var(--flood-2); }
.cost-note { margin-top: 14px; padding: 16px 20px; border-radius: 18px; background: var(--surface-2); font-size: 14.5px; color: var(--ink-2); }
@media (max-width: 900px) { .cost-grid { grid-template-columns: 1fr; } }

/* what it is built on */
.built { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.built .card:nth-child(odd) { background: var(--surface-3); }
.built .addr { display: inline-block; margin-top: 12px; font-family: var(--mono); font-size: 12.5px; padding: 5px 10px; border-radius: 10px; background: var(--wash); color: var(--ink); }
.built .addr:hover { background: var(--wash-2); }
@media (max-width: 900px) { .built { grid-template-columns: 1fr; } }

/* The proof panel: three cards to a row, so a section of pale panes never
   fills a viewport on its own (a single column measured 27% flat on a sibling). */
.proof { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; align-items: start; }
.proof.four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.proof .card { background: var(--surface-2); }
.proof .card:nth-child(even) { background: var(--surface-3); }
.proof .score { font-family: var(--serif); font-weight: 500; font-size: 46px; line-height: 1; letter-spacing: -.02em; color: var(--silt); }
.proof h3 { font-size: 21px; margin: 10px 0 8px; }
.proof p { font-size: 13.5px; }
@media (max-width: 900px) { .proof { grid-template-columns: 1fr; } }

/* ---------- FAQ ---------- */
.faq { max-width: 840px; margin: 0 auto; display: grid; gap: 10px; }
.faq details { border-radius: var(--r-sm); background: var(--surface-2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.faq details:nth-child(even) { background: var(--surface-3); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 17px; display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--ink-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .a { padding: 0 24px 22px; color: var(--ink-2); }
.faq .a p + p { margin-top: 10px; }

/* ---------- the dense pale surface, and the one dark slab ----------

   `.slab` is the DENSE surface the stylesheet's own header describes: 82%
   glass, for figures, tables and long lists. It was inherited from a sibling
   as a dark call-to-action panel while the header still called it dense — and
   the 51-row depth table then rendered as a full viewport of near-black, which
   measured 80% flat against the reference's worst 11%. The comment and the
   code now say the same thing; the dark panel is `.dark-slab`. */
.slab {
  border-radius: 28px; padding: 6px 10px 10px;
  /* THINNER THAN THE DIVISION SUGGESTS, and measured rather than argued: at 82%
     the depth table filled a viewport at 30% flat with the chroma down to
     0.027, under the reference's own floor of 0.031. At 66%, with eight rows
     instead of twelve, the same frame is a card on a photograph again. The
     ink on it is still proved for 4.5:1 at both ends of the picture. */
  background: var(--surface-2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
  box-shadow: var(--shadow-sm);
}
.dark-slab {
  border-radius: 36px; padding: 56px 40px; text-align: center; color: #fff;
  background: rgba(var(--ink-rgb), .86); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
}
.dark-slab h2 { font-family: var(--serif); font-weight: 500; font-size: clamp(38px, 5vw, 60px); line-height: 1.02; letter-spacing: -.02em; }
.dark-slab h2 em { color: var(--haze); }
.dark-slab .inner { display: inline-block; max-width: 620px; margin: 16px auto 0; padding: 16px 22px; border-radius: 20px; background: rgba(255, 255, 255, .10); color: var(--foam); font-size: 16.5px; }
.dark-slab .hero-cta { justify-content: center; margin-top: 26px; }

.footer { padding: 30px 0 40px; }
.foot-card { padding: 34px 34px 26px; border-radius: 30px; background: var(--surface-2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
.foot-grid h5 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 10px; }   /* --ink-2: --ink-3 measured 4.45:1 at 390px */
.foot-grid a { display: block; color: var(--ink-2); padding: 3px 0; font-size: 14.5px; }
.foot-grid a:hover { color: var(--ink); }
.foot-grid .blurb { color: var(--ink-2); font-size: 14.5px; margin-top: 12px; max-width: 340px; }
/* EVERY WORD SITS ON A SURFACE OF ITS OWN. The first live audit measured this
   line at 2.4:1 — the photograph credit, in 13px, standing on the photograph
   it credits. It is the recurring failure in this family of sites. Each half
   is now a chip on the dense surface, and the ink is the darkest one. */
.foot-base { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-top: 28px; padding-top: 18px; font-size: 13px; color: var(--ink); }
.foot-base > span { padding: 8px 14px; border-radius: 999px; background: var(--surface-3); backdrop-filter: var(--blur-lite); -webkit-backdrop-filter: var(--blur-lite); }
.foot-base a { text-decoration: underline; text-underline-offset: 2px; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- reveal ---------- */
.js .rise { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s ease; }
.js .rise.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .rise { opacity: 1; transform: none; transition: none; } .live-dot { animation: none; } html { scroll-behavior: auto; } }

/* ============================================================
   the app
   ============================================================ */
.app { padding: 18px 0 40px; }
.app-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 16px; align-items: start; }
@media (max-width: 1000px) { .app-grid { grid-template-columns: 1fr; } }
.pane { padding: 24px 24px 22px; border-radius: 30px; background: var(--surface-2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); box-shadow: 0 30px 80px rgba(var(--ink-rgb), .14); }
.pane.dense { background: var(--surface-3); }
.pane h2 { font-family: var(--serif); font-weight: 500; font-size: 30px; line-height: 1.05; letter-spacing: -.012em; }
.pane .sub { color: var(--ink-2); font-size: 14.5px; margin-top: 4px; }
.tabs { display: flex; gap: 4px; padding: 5px; border-radius: 999px; background: var(--surface-3); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); width: max-content; max-width: 100%; margin: 0 auto 16px; box-shadow: 0 8px 30px rgba(var(--ink-rgb), .12); }
.tabs a { padding: 10px 20px; border-radius: 999px; font-weight: 600; font-size: 15px; color: var(--ink-2); }
.tabs a.on { background: var(--silt); color: #fff; }
.field { margin-top: 18px; }
.field > label, .field > .label { display: block; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 8px; }
.opts { display: flex; flex-wrap: wrap; gap: 6px; }
.opt { border: 1px solid var(--line); background: rgba(255, 255, 255, .72); padding: 8px 13px; border-radius: 12px; font-weight: 600; font-size: 14px; cursor: pointer; color: var(--ink); font-variant-numeric: tabular-nums; }
.opt small { display: block; font-size: 11px; font-weight: 500; color: var(--ink-2); }
.opt:hover { background: #fff; }
.opt.on { background: var(--silt); color: #fff; border-color: var(--silt); }
.opt.on small { color: var(--foam); }
.opt.sell.on { background: var(--flood); border-color: var(--flood); }
.opt:disabled { opacity: .5; cursor: not-allowed; }
.input { display: flex; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 14px; background: #fff; border: 1px solid var(--line); }
.input input, .input select { border: 0; outline: 0; background: transparent; width: 100%; font-size: 17px; font-weight: 600; font-variant-numeric: tabular-nums; min-width: 0; }
.input span { color: var(--ink-2); font-size: 14px; white-space: nowrap; }
.input:focus-within { border-color: var(--silt); box-shadow: 0 0 0 3px var(--wash-2); }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hint { font-size: 13px; color: var(--ink-2); margin-top: 6px; }
.hint b { color: var(--ink); }
.hint button { border: 0; background: none; color: var(--silt); font-weight: 700; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.summary { margin-top: 18px; padding: 16px 18px; border-radius: 18px; background: rgba(255, 255, 255, .74); display: grid; gap: 8px; font-size: 14.5px; }
.summary .line { display: flex; justify-content: space-between; gap: 12px; }
.summary .line span { color: var(--ink-2); }
.summary .line b { font-variant-numeric: tabular-nums; text-align: right; }
.summary .line.total { padding-top: 8px; border-top: 1px solid var(--line); }
.if { margin-top: 12px; display: grid; gap: 6px; }
.if div { padding: 10px 12px; border-radius: 12px; background: var(--wash); font-size: 13.5px; color: var(--ink); }
.if div.cost { background: var(--flood-wash); }
.act { margin-top: 18px; display: grid; gap: 10px; }
/* A NOTE IS A SURFACE, not a sentence on a photograph. It was inherited as
   bare centred text, and the "not audited" paragraph — the single most
   important sentence on the site — stood directly on the picture. Every word
   on this site sits on a surface of its own; that rule has no exceptions and
   this was one. */
.note {
  font-size: 14px; color: var(--ink-2);
  padding: 16px 20px; border-radius: 20px;
  background: var(--surface-2); backdrop-filter: var(--blur-lite); -webkit-backdrop-filter: var(--blur-lite);
}
.note b { color: var(--ink); }
.note > summary { cursor: pointer; font-weight: 600; color: var(--ink); }
.plan { list-style: none; display: grid; gap: 6px; margin-top: 12px; }
.plan li { display: flex; gap: 10px; align-items: center; font-size: 13.5px; padding: 8px 12px; border-radius: 12px; background: rgba(255, 255, 255, .66); }
.plan li::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--line); flex: none; }
.plan li.doing::before { background: var(--sand); }
.plan li.done::before { background: var(--up); }
.plan li.bad::before { background: var(--down); }
.msg { margin-top: 12px; padding: 12px 14px; border-radius: 14px; font-size: 14px; background: var(--wash); }
.msg.bad { background: rgba(var(--down-rgb), .12); }
.msg.good { background: rgba(var(--up-rgb), .14); }
.msg a { text-decoration: underline; }

.list { display: grid; gap: 8px; margin-top: 14px; }
.item { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 12px; align-items: center; padding: 12px 14px; border-radius: 18px; background: rgba(255, 255, 255, .72); }
.item:nth-child(even) { background: rgba(255, 255, 255, .62); }
.item .t { font-weight: 700; font-size: 15px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.item .n { font-size: 13px; color: var(--ink-2); }
.item .r { text-align: right; }
.item .r b { display: block; font-size: 16px; font-variant-numeric: tabular-nums; }
.item .r small { display: block; font-size: 12px; color: var(--ink-2); }
.item .go { display: flex; gap: 6px; align-items: center; justify-content: flex-end; margin-top: 6px; }
.item .go .input { padding: 5px 10px; border-radius: 10px; width: 92px; }
.item .go .input input { font-size: 14px; }
.item.dead { opacity: .72; }
.empty { padding: 26px 20px; border-radius: 18px; background: rgba(255, 255, 255, .66); text-align: center; color: var(--ink-2); font-size: 14.5px; margin-top: 14px; }
.empty b { color: var(--ink); }
.wallet-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 12px 14px 12px 18px; border-radius: 999px; background: var(--surface-3); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); margin-bottom: 14px; font-size: 14px; }
.wallet-bar b { font-family: var(--mono); font-size: 13.5px; }
.progress { height: 4px; border-radius: 4px; background: var(--wash-2); overflow: hidden; margin-top: 10px; }
.progress i { display: block; height: 100%; width: 0; background: var(--silt); transition: width .3s; }

/* modal (wallet picker) */
.modal { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; background: rgba(var(--ink-rgb), .45); padding: 16px; }
.modal .box { width: min(420px, 100%); padding: 24px; border-radius: 26px; background: rgba(var(--glass), .97); box-shadow: var(--shadow-lg); }
.modal h3 { font-family: var(--serif); font-weight: 500; font-size: 26px; }
.modal .wl { display: grid; gap: 8px; margin-top: 14px; }
.modal .wl button, .modal .wl a { display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 14px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-weight: 600; text-align: left; }
.modal .wl img { width: 26px; height: 26px; border-radius: 6px; }

.toast { position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 95; max-width: min(560px, calc(100% - 32px)); padding: 13px 18px; border-radius: 16px; background: var(--ink); color: #fff; font-size: 14px; box-shadow: var(--shadow); }
.toast.bad { background: var(--down); }
.toast a { text-decoration: underline; color: var(--foam); }

/* ---------- prose pages (docs, credits) ---------- */
.doc { padding: 20px 0 40px; }
.doc-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 18px; align-items: start; }
.toc { position: sticky; top: 96px; padding: 20px 18px; border-radius: 24px; background: var(--surface); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.toc a { display: block; font-size: 14px; padding: 5px 8px; border-radius: 10px; color: var(--ink); }
.toc a:hover { background: var(--wash); }
.prose { display: grid; gap: 14px; }
.prose > section { padding: 30px 34px 28px; border-radius: 28px; background: var(--surface-2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur); }
.prose > section:nth-child(even) { background: var(--surface-3); }
.prose h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(38px, 5vw, 58px); line-height: 1.02; letter-spacing: -.02em; }
.prose h2 { font-family: var(--serif); font-weight: 500; font-size: 30px; line-height: 1.1; letter-spacing: -.01em; margin-bottom: 10px; }
.prose h3 { font-size: 17px; margin: 18px 0 6px; }
.prose p, .prose li { color: var(--ink-2); font-size: 16px; }
.prose p + p { margin-top: 10px; }
.prose ul, .prose ol { padding-left: 22px; margin-top: 8px; display: grid; gap: 6px; }
.prose a { color: var(--silt); text-decoration: underline; text-underline-offset: 2px; font-weight: 600; }
.prose code { background: var(--wash); padding: 1px 6px; border-radius: 6px; color: var(--ink); }
.prose table { width: 100%; border-collapse: collapse; margin-top: 12px; font-size: 14px; }
.prose th, .prose td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); }
.prose td { color: var(--ink); }
.prose .tbl { overflow-x: auto; }
@media (max-width: 900px) { .doc-grid { grid-template-columns: 1fr; } .toc { position: static; } .prose > section { padding: 24px 20px; } }


/* ---------- tables ----------
   A LONG TABLE IS ONE PANE. Fifty-one rows of one pale surface measured 80%
   flat where the reference's worst frame is 11%: twelve rows and a button for
   the rest keeps it a card instead of a fill. `.tbl.all` is what the button
   adds. */
.tbl { width: 100%; border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; }
.tbl th, .tbl td { padding: 7px 10px; text-align: right; border-bottom: 1px solid var(--line-2); }
.tbl thead th { font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); border-bottom: 1px solid var(--line); }
.tbl tbody th { text-align: left; font-weight: 700; color: var(--ink); }
.tbl tbody tr:nth-child(even) { background: rgba(var(--glass), .34); }
.tbl td { color: var(--ink-2); }
.tbl tfoot td { text-align: left; font-size: 12.5px; color: var(--ink-3); border: 0; padding-top: 10px; }
.tbl tbody tr:nth-child(n+9) { display: none; }
.tbl.all tbody tr:nth-child(n+9) { display: table-row; }
.tbl-more { display: flex; justify-content: center; padding: 10px 0 2px; }

/* the schedule preview in the app */
.schedule { margin-top: 16px; padding: 4px 10px 8px; border-radius: 20px; background: var(--surface-3); }
.schedule .tbl th { text-align: left; }
.schedule .tbl tbody tr:nth-child(n+9) { display: table-row; }

/* a sale on the board */
.sale { padding: 12px 14px; border-radius: 18px; background: var(--surface-2); display: grid; gap: 8px; }
.sale-top { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; gap: 10px; align-items: center; }
.sale-top .n { display: block; font-size: 12.5px; color: var(--ink-2); }
.sale-px { text-align: right; }
.sale-px b { display: block; font-family: var(--serif); font-size: 24px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.sale-px span { font-size: 11.5px; color: var(--ink-2); }
.sale-bar { height: 6px; border-radius: 99px; background: var(--wash); overflow: hidden; }
.sale-bar i { display: block; height: 100%; background: var(--flood); }
.sale-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: 13px; }
.sale-foot .buy { display: flex; gap: 6px; align-items: center; }
.sale-foot .buy input { width: 8.5em; padding: 6px 9px; border-radius: 10px; border: 1px solid var(--line); background: rgba(255,255,255,.7); font: inherit; font-size: 13px; }
.linkish { border: 0; background: none; padding: 0; font: inherit; font-size: 12.5px; color: var(--silt); text-decoration: underline; cursor: pointer; }
.summary { margin-top: 14px; display: grid; gap: 6px; font-size: 14px; }
.summary .good { color: var(--up); }
.summary .warn { color: var(--down); }
.summary .dim { color: var(--ink-3); }
.kv { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 6px 18px; font-size: 14px; }
.kv dt { font-weight: 700; color: var(--ink-2); }
.kv dd { margin: 0; color: var(--ink); overflow-wrap: anywhere; }
.code { margin-top: 12px; padding: 12px 14px; border-radius: 14px; background: var(--surface-3); font-family: var(--mono); font-size: 13px; overflow-x: auto; }
ol.props { display: grid; gap: 4px; padding-left: 0; list-style: none; font-size: 14.5px; }
ol.props li { padding: 6px 10px; border-radius: 10px; background: rgba(var(--glass), .34); }


/* ---------- column grids ----------
   `.cols-4` was missing, so four proof cards stacked full-width and painted
   four pale bands down a whole viewport — 29% flat where the reference's worst
   frame is 11%. A layout class that does not exist fails as a full-width
   block, which is the flattest thing a page can do. */
.cols-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.cols-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.cols-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.cols-4 .card { padding: 20px 20px 22px; }
.cols-4 .card .v { display: block; font-family: var(--serif); font-weight: 500; font-size: 34px; line-height: 1.05; letter-spacing: -.015em; color: var(--ink); font-variant-numeric: tabular-nums; }
.cols-4 .card p { font-size: 13.5px; margin-top: 8px; }
.cols-2 .card:nth-child(even), .cols-3 .card:nth-child(2), .cols-4 .card:nth-child(even) { background: var(--surface-3); }
@media (max-width: 1000px) {
  .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cols-3 { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .cols-2, .cols-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
}

/* ---------- section headings and their standfirsts ----------
   `.sec-h` and `.sec-p` did not exist in the inherited stylesheet, so every
   section heading and every standfirst on the landing page rendered as bare
   text ON THE PHOTOGRAPH — which is the one failure mode this whole site is
   organised against, and it shipped invisibly because unstyled text still
   reads fine in a screenshot taken over a pale part of the picture.

   They sit on a THIN sheet: display type and short standfirsts only, which is
   what 54% glass is proved for. Long prose goes in a `.card`. */
.sec {
  padding: 18px 22px 20px; border-radius: 28px; margin-bottom: 14px;
  background: var(--surface); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
}
.sec-h {
  font-family: var(--serif); font-weight: 500; letter-spacing: -.018em; line-height: 1.04;
  font-size: clamp(30px, 3.6vw, 46px); color: var(--ink);
  padding: 16px 22px 14px; border-radius: 28px 28px 0 0;
  background: var(--surface); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
}
.sec-p {
  margin: 0 0 14px; font-size: 16px; color: var(--ink-2);
  padding: 4px 22px 18px; border-radius: 0 0 28px 28px;
  background: var(--surface-2); backdrop-filter: var(--blur); -webkit-backdrop-filter: var(--blur);
}
/* A heading with no standfirst under it closes its own corners. */
.sec-h:not(:has(+ .sec-p)) { border-radius: 28px; margin-bottom: 14px; }
.sec-p .dim { color: var(--ink-3); }
section { padding: 34px 0; }

/* The docs article. `.doc-body` had no styles at all in the inherited
   stylesheet, so every heading and paragraph on the docs page sat on the bare
   photograph — and the painted-pixel audit only caught TWO of them, because
   the rest happened to fall over pale sand. The page is `.prose` now, which
   this stylesheet already defines as alternating surfaces. */
.prose > section > h2:first-child { margin-top: 0; }
.prose h2 { font-family: var(--serif); font-weight: 500; font-size: clamp(26px, 3vw, 36px); line-height: 1.06; letter-spacing: -.015em; margin-top: 4px; }
.prose h3 { font-family: var(--serif); font-weight: 500; font-size: 22px; line-height: 1.12; margin-top: 18px; }
.prose p { color: var(--ink-2); font-size: 16px; margin-top: 10px; }
.prose ul, .prose ol { color: var(--ink-2); font-size: 16px; margin-top: 10px; padding-left: 20px; display: grid; gap: 6px; }
.prose ul.small, .prose ol.small { font-size: 14px; }
.prose li b { color: var(--ink); }
.prose .lede { font-size: 18px; color: var(--ink-2); margin-top: 12px; }
/* `em` inside prose is emphasis, not a state colour. The inherited rules set it
   to --flood inside headings; in body text it must keep the paragraph's ink,
   or a single italic word measures 1.79:1 on a pale card. */
.prose em { font-style: italic; color: inherit; }
.prose b, .prose strong { color: var(--ink); font-weight: 700; }
.prose code { background: var(--wash); padding: 1px 5px; border-radius: 6px; }
.prose .cols-2, .prose .cols-3, .prose .cols-4 { margin-top: 14px; }
.prose .slab { margin-top: 14px; }
.prose .note { margin-top: 14px; }
.prose pre.code { white-space: pre-wrap; }