:root {
  --paper: #F6F7F8;
  --plate: #FFFFFF;
  --band: #ECEDEF;
  --ink: #0F0F0F;
  --ink-2: rgba(15, 15, 15, .74);
  --mute: rgba(15, 15, 15, .56);
  --rule: rgba(15, 15, 15, .20);
  --rule-soft: rgba(15, 15, 15, .09);
  --wash: rgba(15, 15, 15, .035);
  --accent: #FDDA24;
  --accent-ink: #0F0F0F;
  --accent-wash: rgba(253, 218, 36, .22);
  --link: #00757F;
  --flow: #00757F;
  --lav-ink: #5B46A8;
  --lav-line: #8E7CD6;
  --lav-wash: rgba(183, 172, 232, .22);
  --reg: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11'%3E%3Cpath d='M5.5 0v11M0 5.5h11' stroke='%230F0F0F' stroke-opacity='.5' stroke-width='1'/%3E%3C/svg%3E");
  --marks: var(--reg) 0 0 / 11px 11px no-repeat, var(--reg) 100% 0 / 11px 11px no-repeat,
    var(--reg) 0 100% / 11px 11px no-repeat, var(--reg) 100% 100% / 11px 11px no-repeat;

  --serif: Lora, Georgia, serif;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #0F0F0F;
  --plate: #171717;
  --band: #151515;
  --ink: #F6F7F8;
  --ink-2: rgba(246, 247, 248, .76);
  --mute: rgba(246, 247, 248, .56);
  --rule: rgba(246, 247, 248, .22);
  --rule-soft: rgba(246, 247, 248, .10);
  --wash: rgba(246, 247, 248, .04);
  --accent-wash: rgba(253, 218, 36, .14);
  --link: #00C7D6;
  --flow: #00C7D6;
  --lav-ink: #C3B9EE;
  --lav-line: #B7ACE8;
  --lav-wash: rgba(183, 172, 232, .12);
  --reg: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11'%3E%3Cpath d='M5.5 0v11M0 5.5h11' stroke='%23F6F7F8' stroke-opacity='.55' stroke-width='1'/%3E%3C/svg%3E");
  color-scheme: dark;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; margin: 0; text-wrap: balance; }
p { margin: 0 0 1.05em; }
table { border-collapse: collapse; width: 100%; }
code { font-family: var(--mono); }
button { font: inherit; }
input[type="range"] { accent-color: var(--accent); }
::selection { background: var(--accent-wash); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { opacity: .4; cursor: not-allowed; }

@keyframes upTick { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

.wrap { max-width: 1240px; margin: 0 auto; padding-inline: clamp(18px, 3.5vw, 44px); }
.mute { color: var(--mute); }
.ink-2 { color: var(--ink-2); }
.eyebrow { font: 400 10px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); }
.tag { font: 500 10px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.meta { font: 400 10px/1.4 var(--mono); color: var(--mute); }

/* Registration-mark frame and plates */
.registered { padding: 6px; background: var(--marks); }
.registered > * { height: 100%; }
.plate { border: 1px solid var(--rule); background: var(--plate); }
.plate-head {
  display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  padding: 14px 18px; border-bottom: 1px solid var(--rule-soft);
}
.plate-foot { padding: 13px 18px; border-top: 1px solid var(--rule-soft); font-size: 12.5px; line-height: 1.5; color: var(--mute); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: 1px solid transparent; background: transparent; color: var(--ink);
  text-decoration: none; white-space: nowrap; cursor: pointer;
}
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: var(--ink); color: var(--accent); }
.btn-sm { padding: 9px 14px; font: 600 12.5px/1 var(--sans); }
.btn-lg { padding: 14px 20px; font: 600 13.5px/1 var(--sans); }
.btn-edged { border-color: var(--ink); }
.btn-outline { border-color: var(--rule); font-weight: 500; }
.btn-outline:hover { border-color: var(--ink); color: var(--ink); }
.btn-chip {
  border-color: var(--rule); padding: 6px 10px;
  font: 400 9.5px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase;
}
.btn-chip:hover { border-color: var(--ink); }
.btn-ink { background: var(--ink); color: var(--paper); padding: 8px 12px; font: 500 11.5px/1.4 var(--mono); }
.btn-ink:hover { background: var(--accent); color: var(--accent-ink); }
.btn-collect { border-color: var(--rule); padding: 6px 9px; font: 400 10.5px/1.4 var(--mono); min-width: 118px; }
.btn-collect:hover { border-color: var(--accent); background: var(--accent-wash); }
.btn-run { background: var(--accent); color: var(--accent-ink); border-color: var(--ink); padding: 8px 12px; font: 600 11px/1 var(--sans); }
.btn-run:hover { background: var(--ink); color: var(--accent); }
.btn-square { border-color: var(--rule); width: 28px; height: 28px; padding: 0; font: 400 14px/1 var(--mono); }
.btn-square:hover:not(:disabled) { border-color: var(--ink); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; background: var(--paper); border-bottom: 1px solid var(--rule-soft); }
.progress { height: 2px; background: var(--rule-soft); }
.progress span { display: block; height: 2px; width: 0; background: var(--accent); }
.header-inner { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding-block: 12px; }
.brand { display: flex; align-items: center; gap: 10px; flex: none; color: var(--ink); text-decoration: none; }
.brand-mark { display: block; width: 10px; height: 10px; background: var(--accent); transform: rotate(45deg); }
.brand-name { font: 500 17px/1 var(--serif); letter-spacing: -.01em; }
.site-nav { display: flex; gap: 2px; flex: 1 1 320px; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a { flex: none; padding: 6px 9px; font: 400 12px/1 var(--sans); color: var(--mute); text-decoration: none; white-space: nowrap; }
.site-nav a:hover { color: var(--ink); background: var(--wash); }
.header-actions { display: flex; align-items: center; gap: 10px; flex: none; }
.theme-toggle { gap: 7px; padding: 7px 10px; font-size: 10px; }
.theme-dot {
  display: block; width: 9px; height: 9px; border: 1px solid currentColor; border-radius: 50%;
  background: linear-gradient(90deg, currentColor 50%, transparent 50%);
}

/* Layout helpers */
.split { display: flex; flex-wrap: wrap; gap: clamp(28px, 4vw, 56px); }
.col-main { flex: 1 1 440px; min-width: 0; }
.col-half { flex: 1 1 380px; min-width: 0; }
.col-side { flex: 0 1 300px; min-width: 240px; align-self: flex-start; }
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(var(--min, 272px), 1fr)); gap: clamp(18px, 2.4vw, 28px); }

/* Hero */
.hero { padding-top: clamp(40px, 6vw, 76px); }
.hero-eyebrow { font: 400 10.5px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--mute); margin-bottom: clamp(20px, 3vw, 30px); }
.hero h1 { font-size: clamp(38px, 5.4vw, 66px); line-height: 1.05; letter-spacing: -.025em; margin: 0 0 24px; }
.circled { position: relative; display: inline-block; }
.circled > span { position: relative; z-index: 1; }
.circled img { position: absolute; z-index: 0; pointer-events: none; max-width: none; }
.hero .circled img { left: -5%; top: -20%; width: 110%; height: 142%; }
.hero-lede { font-size: clamp(16px, 1.35vw, 18px); line-height: 1.6; color: var(--ink-2); max-width: 54ch; text-wrap: pretty; margin-bottom: 32px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.status-pill {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border: 1px solid var(--rule);
  font: 400 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mute);
}
.status-pill span { display: block; width: 5px; height: 5px; background: var(--accent); animation: upTick 2.4s ease-in-out infinite; }
.contract-line { margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--rule-soft); display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.contract-id { font-size: 12.5px; line-height: 1.6; word-break: break-all; }
.deploy-card { flex: 0 1 380px; min-width: 280px; align-self: flex-start; }
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; }
.spec { padding: 14px 18px; border-bottom: 1px solid var(--rule-soft); }
.spec:nth-child(odd) { border-right: 1px solid var(--rule-soft); }
.spec-k { font: 400 9.5px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); margin-bottom: 7px; }
.spec-v { font-size: 14px; line-height: 1.3; }
.spec-foot { padding: 13px 18px; display: flex; align-items: center; justify-content: space-between; }
.stats { margin-top: clamp(40px, 6vw, 72px); }
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(178px, 1fr)); border-block: 1px solid var(--rule); }
.stats-row.registered > * { height: auto; }
.stat { padding: 22px 20px; border-right: 1px solid var(--rule-soft); }
.stat:last-child { border-right: 0; }
.stat-n { display: block; font: 400 clamp(22px, 2.2vw, 29px)/1 var(--mono); letter-spacing: -.02em; margin-bottom: 10px; }
.stat .circled img { left: -16%; top: -46%; width: 132%; height: 192%; }
.stat-k { font: 400 10px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); }

/* Sections */
.section { padding-top: clamp(56px, 8vw, 104px); scroll-margin-top: 72px; }
.section--last { padding-bottom: clamp(50px, 7vw, 86px); }
.section-head { display: flex; align-items: baseline; gap: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--rule); margin-bottom: clamp(26px, 4vw, 40px); }
.section-num { flex: none; font: 400 11px/1.4 var(--mono); letter-spacing: .12em; color: var(--mute); }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.1; letter-spacing: -.02em; }
.lede { font-size: 17px; color: var(--ink-2); max-width: 70ch; }
.prose { max-width: 70ch; color: var(--ink-2); }
.prose p:first-child { font-size: 17px; }
.prose p:last-child { margin-bottom: 0; }
.subhead { font-size: clamp(21px, 2.2vw, 27px); line-height: 1.2; margin-bottom: 14px; max-width: 40ch; }
.col-title { font-size: 21px; line-height: 1.2; margin-bottom: 10px; }
.small-prose { font-size: 15px; color: var(--ink-2); max-width: 60ch; }
.note { font-size: 12.5px; line-height: 1.55; color: var(--mute); margin-top: 14px; }

/* Problem */
.exists { padding: 20px; border: 1px solid var(--rule); }
.exists-list { display: flex; flex-direction: column; gap: 14px; list-style: none; margin: 16px 0 0; padding: 0; }
.exists-list li { display: flex; gap: 11px; align-items: flex-start; font-size: 13.5px; line-height: 1.45; }
.exists-list svg { width: 15px; height: 15px; flex: none; margin-top: 3px; color: var(--ink); opacity: .9; }

/* Recipient types */
.types { margin: clamp(24px, 3vw, 34px) 0; --min: 280px; }
.type-card { border: 1px solid var(--rule); padding: 22px; }
.type-card--split { border-color: var(--lav-line); background: var(--lav-wash); }
.type-card .tag { color: var(--flow); margin-bottom: 12px; }
.type-card--split .tag { color: var(--lav-ink); }
.type-card h3 { font-size: 21px; line-height: 1.2; margin-bottom: 10px; }
.type-card p { margin: 0; font-size: 14.5px; line-height: 1.55; color: var(--ink-2); }

/* Figures */
figure { margin: 0; }
.fig { margin-top: clamp(30px, 4vw, 48px); }
.fig-caption { font-size: 12.5px; line-height: 1.55; color: var(--mute); margin-top: 14px; max-width: 84ch; }
.fig-caption strong { font-weight: 400; color: var(--ink); }
.fig-controls { display: flex; align-items: center; gap: 10px; }

/* Fig 01: dependency tree */
.flow-scroll { overflow-x: auto; padding: 26px 18px 18px; }
.flow { position: relative; width: 660px; height: 400px; margin: 0 auto; }
.flow svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.flow .edge { fill: none; stroke: var(--rule); stroke-width: 1.25; transition: stroke .3s; }
.flow .edge.is-live { stroke: var(--accent); }
.flow .edge.is-live-lav { stroke: var(--lav-line); }
.flow .edge-label { fill: var(--mute); font: 400 9.5px var(--mono); letter-spacing: .06em; }
.flow.is-paused .pulse { display: none; }
.node { position: absolute; border: 1px solid var(--rule); background: var(--plate); padding: 9px 11px; }
.node-k { font: 400 9px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); margin-bottom: 5px; }
.node-name { font: 500 12.5px/1 var(--sans); margin-bottom: 6px; }
.node-ppm { font: 400 10px/1.3 var(--mono); color: var(--mute); margin-bottom: 3px; }
.node-v { font: 400 11px/1.3 var(--mono); }
.node--split { border-color: var(--accent); background: var(--accent-wash); padding: 11px 13px; }
.node--split .node-k { font-weight: 500; color: var(--ink); margin-bottom: 7px; }
.node--deps { border-color: var(--lav-line); background: var(--lav-wash); }
.node--deps .node-k { font-weight: 500; color: var(--lav-ink); margin-bottom: 6px; }
.node--lib { padding: 8px 10px; }
.node--lib .node-name { font: 400 11.5px/1.4 var(--mono); margin-bottom: 5px; }
.node--lib .node-ppm { font-size: 9.5px; }

/* Calls */
.calls { margin-top: clamp(26px, 3.4vw, 38px); --min: 264px; }
.call { display: flex; flex-direction: column; border: 1px solid var(--rule); background: #F6F7F8; color: #0F0F0F; }
.call-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; padding: 18px 20px 0; }
.call .tag { color: rgba(15, 15, 15, .55); margin-bottom: 9px; }
.call h3 { font-size: 23px; line-height: 1.15; }
.call img { width: 62px; height: 62px; flex: none; margin-top: -4px; }
.call p { flex: 1; margin: 0; padding: 14px 20px 0; font-size: 14.5px; line-height: 1.55; color: rgba(15, 15, 15, .72); }
.call-foot {
  margin: 18px 20px; padding-top: 12px; border-top: 1px solid rgba(15, 15, 15, .12);
  font: 400 10px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: rgba(15, 15, 15, .55);
}
.call-foot b { font-weight: 400; color: #0F0F0F; }

/* Fig 02: push vs pull */
.demos { --min: 310px; }
.demo { display: flex; flex-direction: column; }
.demo--upstream { border-color: var(--accent); }
.demo-body { flex: 1; padding: 18px; }
.demo-controls { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.chip-node { border: 1px solid var(--rule); padding: 7px 11px; font: 400 11.5px/1.4 var(--mono); }
.chip-node--split { border-color: var(--accent); background: var(--accent-wash); }
.demo-list { display: flex; flex-direction: column; gap: 8px; list-style: none; margin: 0; padding: 0; }
.demo-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border: 1px dashed var(--rule); font-size: 13px; }
.demo-row--solid { border-style: solid; }
.demo-row--settle { padding: 8px 8px 8px 12px; border: 1px solid var(--rule-soft); background: var(--wash); }
.demo-status { font: 400 10px/1.4 var(--mono); letter-spacing: .06em; color: var(--mute); }
.demo-status.is-on { color: var(--ink); }
.aside-note { color: var(--mute); font-size: 12px; }

/* Fig 03: epochs */
.epoch-body { padding: 20px 18px; }
.epoch-range { width: 100%; margin: 0 0 6px; }
.epoch-ticks { display: flex; justify-content: space-between; gap: 6px; margin-bottom: 22px; font: 400 9px/1.3 var(--mono); color: var(--mute); text-align: center; }
.epoch-ticks span { flex: 1; }
.epoch-event { margin-bottom: 22px; padding: 11px 14px; background: var(--wash); border-left: 2px solid var(--accent); font: 400 12px/1.5 var(--mono); }
.epoch-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.epoch-card { border: 1px solid var(--rule-soft); padding: 16px; background: var(--wash); }
.epoch-card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.epoch-card-head .tag { letter-spacing: .1em; }
.epoch-who { font-size: 13px; line-height: 1.6; margin-bottom: 12px; }
.kv { display: flex; justify-content: space-between; font: 400 11.5px/1.8 var(--mono); color: var(--mute); }
.kv span { color: var(--ink); }

.props-title { font-size: clamp(20px, 2vw, 24px); line-height: 1.2; margin: clamp(38px, 5vw, 60px) 0 20px; }
.props { display: grid; grid-template-columns: repeat(auto-fit, minmax(272px, 1fr)); gap: 1px; background: var(--rule-soft); border: 1px solid var(--rule-soft); }
.prop { background: var(--paper); padding: 20px; font-size: 13.5px; line-height: 1.55; color: var(--ink-2); }
.prop b { display: block; margin-bottom: 8px; font: 500 13.5px/1.4 var(--sans); color: var(--ink); }

/* Accounting */
.formula-wrap { margin: clamp(22px, 3vw, 32px) 0; }
.formula { padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 28px); overflow-x: auto; }
.formula div { font: 400 clamp(14px, 1.5vw, 18px)/2 var(--mono); white-space: nowrap; }
.formula .then { color: var(--mute); }
.fig--stack { margin-top: clamp(34px, 4.4vw, 52px); }

.builder-body { padding: 20px 18px; }
.deposit-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; padding-bottom: 18px; border-bottom: 1px solid var(--rule-soft); }
.deposit-input { width: 130px; padding: 8px 10px; border: 1px solid var(--rule); background: transparent; color: var(--ink); font: 400 13px/1.4 var(--mono); }
.split-rows { display: flex; flex-direction: column; gap: 14px; }
.split-row {
  display: grid; align-items: center; gap: 14px;
  grid-template-columns: minmax(90px, 1fr) minmax(120px, 2fr) minmax(96px, 1fr) minmax(128px, 1.2fr);
}
.split-row .name { min-width: 0; overflow: hidden; text-overflow: ellipsis; font: 400 13px/1.3 var(--mono); }
.split-row input { width: 100%; min-width: 0; }
.split-row .ppm, .split-row .pay { text-align: right; font: 400 12.5px/1.3 var(--mono); }
.split-row .ppm { color: var(--mute); }
.split-total { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--rule); }
.split-total .name { font: 500 11px/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.split-total .dust { font: 400 11px/1.3 var(--mono); color: var(--mute); }
.split-total .ppm, .split-total .pay { font-weight: 500; color: var(--ink); }
.counter { min-width: 96px; text-align: center; }

@media (max-width: 560px) {
  .split-row { grid-template-columns: 1fr 1fr; gap: 8px 14px; }
  .split-row > input, .split-row > .dust { grid-column: 1 / -1; order: 1; }
  .split-row .ppm { text-align: left; order: 2; }
  .split-row .pay { order: 3; }
}

/* Tables */
.table-scroll { overflow-x: auto; }
.data { font-size: 14px; }
.data th {
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--rule);
  font: 500 9.5px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute);
}
.data td { padding: 14px 16px; border-bottom: 1px solid var(--rule-soft); vertical-align: top; line-height: 1.5; }
.data th:first-child, .data td:first-child { padding-left: 0; }
.data th:last-child, .data td:last-child { padding-right: 0; }
.data.data--inset th, .data.data--inset td { padding: 13px 18px; }
.data.data--inset tr:last-child td { border-bottom: 0; }
.data .num { text-align: right; font-family: var(--mono); }
.data .col-up { background: var(--accent-wash); }
.data th.col-up { color: var(--ink); }
.data .cell-mute { color: var(--mute); }
.data .cell-soft { color: var(--ink-2); }
.data code { font-size: 13px; }
.data .strong { font-weight: 500; }
.signer { font: 400 12px/1.5 var(--mono); color: var(--flow); }
.signer--any { color: var(--mute); }
.row-key { font: 500 9.5px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mute); }
.data th.product { font: 500 14px/1.2 var(--serif); letter-spacing: 0; text-transform: none; color: var(--mute); }
.data th.product.col-up { color: var(--ink); }
.table-soroban { min-width: 660px; margin-top: clamp(22px, 3vw, 32px); }
.table-interface { min-width: 700px; }
.table-landscape { min-width: 840px; font-size: 13.5px; }
.table-costs { min-width: 420px; font-size: 13.5px; }
.table-costs td { padding: 12px; }

.callout {
  display: flex; gap: 16px; align-items: flex-start; margin-top: clamp(24px, 3vw, 34px);
  padding: 18px 20px; border: 1px solid var(--rule); background: var(--accent-wash); font-size: 14.5px; line-height: 1.6;
}
.callout svg { width: 30px; height: 22px; flex: none; margin-top: 2px; color: var(--ink); }
.callout b { font-weight: 500; }

.events { margin-top: clamp(22px, 3vw, 30px); padding: 18px 20px; border: 1px solid var(--rule-soft); background: var(--wash); }
.events .eyebrow { font-weight: 500; font-size: 9.5px; letter-spacing: .12em; margin-bottom: 12px; }
.event-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.event-list code { display: block; padding: 6px 10px; border: 1px solid var(--rule-soft); background: var(--plate); font-size: 12.5px; }

/* Verification */
.tests { display: flex; flex-direction: column; gap: 1px; margin: 20px 0 0; padding: 0; list-style: none; background: var(--rule-soft); border-block: 1px solid var(--rule-soft); }
.tests li { display: flex; gap: 12px; align-items: baseline; padding: 11px 0; background: var(--paper); font-size: 14px; line-height: 1.5; }
.tests li span { flex: none; padding: 1px 5px; background: var(--accent); color: var(--accent-ink); font: 400 10px/1.5 var(--mono); }
.fee-plate { margin-top: 22px; }
.fee-plate > * { height: auto; }
.costs-title { font-size: 21px; line-height: 1.2; margin: 32px 0 14px; }

/* Limitations */
.limits { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 0 clamp(28px, 4vw, 56px); margin: 0; padding: 0; list-style: none; }
.limits li { display: flex; gap: 14px; align-items: flex-start; padding: 15px 0; border-bottom: 1px solid var(--rule-soft); font-size: 14.5px; line-height: 1.55; }
.limits li > span { flex: none; font: 400 10px/1.6 var(--mono); color: var(--mute); }
.limits b { font-weight: 500; }

/* Roadmap */
.tranches { margin-top: clamp(24px, 3.2vw, 36px); }
.tranche { border: 1px solid var(--rule); padding: 22px; }
.tranche--now { border-color: var(--accent); background: var(--accent-wash); }
.tranche-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 16px; }
.tranche:not(.tranche--now) .tag { color: var(--mute); }
.tranche h3 { font-size: 26px; line-height: 1.1; margin-bottom: 18px; }
.checklist { display: flex; flex-direction: column; gap: 12px; margin: 0; padding: 0; list-style: none; }
.checklist li { display: flex; gap: 11px; align-items: flex-start; font-size: 14px; line-height: 1.5; color: var(--ink-2); }
.checklist li::before { content: "○"; flex: none; font: 400 11px/1.5 var(--mono); color: var(--mute); }
.checklist li.done { color: var(--ink); }
.checklist li.done::before { content: "✓"; color: var(--ink); }

/* Open source */
.os-card { padding: 22px; }
.os-card img { width: 64px; height: 64px; margin-bottom: 16px; }
.os-title { font: 500 15px/1.35 var(--sans); margin-bottom: 8px; }
.os-text { font-size: 13.5px; line-height: 1.55; color: var(--ink-2); margin-bottom: 18px; }
.link-arrow {
  display: inline-flex; align-items: center; gap: 8px; padding-bottom: 3px;
  border-bottom: 1px solid var(--rule); color: var(--ink); text-decoration: none; font: 500 13px/1 var(--sans);
}
.link-arrow:hover { border-color: var(--ink); color: var(--ink); }

/* Footer: always dark */
.site-footer { position: relative; overflow: hidden; background: #0F0F0F; color: #F6F7F8; }
.site-footer .halo { position: absolute; right: -110px; bottom: -190px; width: 560px; max-width: none; opacity: .26; pointer-events: none; }
.footer-inner { position: relative; padding-block: clamp(48px, 6.5vw, 88px); }
.site-footer h2 { font-size: clamp(30px, 4.2vw, 52px); line-height: 1.08; letter-spacing: -.025em; max-width: 22ch; margin-bottom: 26px; }
.site-footer p { font-size: 16px; line-height: 1.6; color: rgba(246, 247, 248, .72); max-width: 56ch; margin-bottom: 34px; }
.footer-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: clamp(44px, 6vw, 72px); }
.btn-yellow { background: #FDDA24; color: #0F0F0F; padding: 15px 22px; font: 600 14px/1 var(--sans); }
.btn-yellow:hover { background: #FFFFFF; color: #0F0F0F; }
.btn-light { border-color: rgba(246, 247, 248, .26); color: #F6F7F8; padding: 15px 22px; font: 500 14px/1 var(--sans); }
.btn-light:hover { border-color: #F6F7F8; color: #F6F7F8; }
.footer-meta { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-end; justify-content: space-between; padding-top: 26px; border-top: 1px solid rgba(246, 247, 248, .16); }
.footer-k { font: 400 10px/1.7 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: rgba(246, 247, 248, .5); margin-bottom: 6px; }
.footer-id { font-size: 12px; line-height: 1.6; word-break: break-all; color: rgba(246, 247, 248, .9); }
.footer-fine { margin-top: 12px; font: 400 10.5px/1.8 var(--mono); color: rgba(246, 247, 248, .5); }
.built-on { display: flex; align-items: center; gap: 12px; }
.built-on .footer-k { margin: 0; }
.built-on img { height: 26px; width: auto; opacity: .9; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}