/* Quiet, static drawings made from the same lines and colours as the page. */
.about-intro { margin-bottom: 44px; }
.about-intro h1 { margin-bottom: 24px; }
.about-intro .lead { color: var(--ink); }
.about-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
    padding: 40px 0;
    border-top: 1px solid var(--border);
}
.about-copy p:last-child { margin-bottom: 0; }
.about-figure { min-width: 0; margin: 0; }
.about-figure figcaption { max-width: 48ch; margin: 24px auto 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.exchange-drawing, .signing-drawing {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 28px minmax(0, 1fr) 28px minmax(0, 1fr);
    align-items: start;
    color: var(--green);
}
.drawing-node { display: flex; flex-direction: column; align-items: center; min-width: 0; text-align: center; }
.drawing-label { display: block; margin-top: 14px; font-size: 13px; font-weight: 600; color: var(--ink); line-height: 1.4; }
.drawing-note { margin-top: 3px; color: var(--muted); font-size: 12px; line-height: 1.4; }
.browser-drawing {
    position: relative;
    width: 94px;
    height: 108px;
    padding-top: 28px;
    border: 1.5px solid currentColor;
    border-radius: 5px 7px 4px 6px;
    transform: rotate(-2deg);
}
.browser-drawing::before { content: ""; position: absolute; top: 17px; left: 0; right: 0; border-top: 1px solid currentColor; }
.browser-drawing::after { content: "···"; position: absolute; top: -9px; left: 8px; font-size: 24px; letter-spacing: 1px; }
.exchange-drawing > :last-child .browser-drawing { transform: rotate(2deg); }
.document-drawing {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    width: 52px;
    height: 64px;
    margin: 0 auto;
    padding: 12px 9px;
    border: 1.5px solid currentColor;
    border-radius: 1px 9px 2px 2px;
    background: var(--surface);
}
.document-drawing > span { display: block; border-top: 1.5px solid currentColor; }
.document-drawing > span:last-of-type { width: 70%; }
.relay-drawing {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 100%;
    max-width: 112px;
    height: 108px;
    border: 1.5px dashed var(--muted);
    border-radius: 6px;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 19px;
}
.relay-drawing > span { margin-top: 8px; color: var(--muted); font: 12px/1.4 system-ui, sans-serif; }
.drawing-arrow { position: relative; display: block; height: 1px; margin: 54px 4px 0; border-top: 1px solid currentColor; }
.drawing-arrow::after { content: ""; position: absolute; right: 0; top: -4px; width: 6px; height: 6px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }
.drawing-lock { position: absolute; width: 12px; height: 10px; left: 50%; bottom: 12px; transform: translateX(-50%); border: 1.5px solid currentColor; border-radius: 2px; }
.drawing-lock::before { content: ""; position: absolute; width: 6px; height: 7px; left: 1.5px; bottom: 7px; border: 1.5px solid currentColor; border-bottom: 0; border-radius: 7px 7px 0 0; }
.contribution-drawing { width: 76px; height: 108px; padding: 18px 13px; gap: 14px; transform: rotate(-3deg); }
.document-drawing > .new-link { width: 100%; padding-top: 8px; border: 1.5px dashed var(--highlight); }
.checks-drawing { display: flex; flex-direction: column; justify-content: center; width: 104px; height: 108px; gap: 3px; border: 1.5px solid currentColor; border-radius: 48% 51% 47% 50%; font-size: 13px; }
.signed-drawing { transform: rotate(3deg); }
.signature-mark { position: absolute; bottom: -8px; right: -12px; display: grid; place-items: center; width: 32px; height: 32px; border: 1.5px solid currentColor; border-radius: 50%; background: var(--paper); font-size: 21px; font-style: normal; }
.merge-drawing { max-width: 340px; margin: 0 auto; color: var(--green); }
.merge-inputs { display: flex; justify-content: space-between; padding: 0 12px; }
.merge-inputs .drawing-label { margin: 0 0 10px; }
.history-drawing { width: 106px; padding: 9px 12px; border: 1.5px solid currentColor; border-radius: 2px 8px 3px 2px; background: var(--surface); transform: rotate(-2deg); }
.merge-inputs > :last-child .history-drawing { transform: rotate(2deg); }
.history-drawing > span { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); padding: 3px 5px; font: 14px/1.5 ui-monospace, Consolas, monospace; }
.history-drawing > span:last-child { border-bottom: 0; }
.history-drawing i { font-style: normal; }
.history-b { color: var(--link); }
.history-c { color: #84531d; }
.merge-connector { position: relative; width: calc(100% - 130px); height: 28px; margin: 8px auto 24px; border: 1px solid currentColor; border-top: 0; border-radius: 0 0 14px 14px; }
.merge-connector::before { content: ""; position: absolute; top: 100%; left: 50%; height: 17px; border-left: 1px solid currentColor; }
.merge-connector::after { content: ""; position: absolute; top: calc(100% + 11px); left: calc(50% - 3px); width: 6px; height: 6px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg); }
.merge-result .history-drawing { width: 120px; transform: rotate(1deg); }
.merge-result .drawing-label { margin-top: 10px; }
.about-ending { padding-top: 36px; border-top: 1px solid var(--border); }
.about-closing { margin-top: 24px; color: var(--muted); }
.about-actions { margin-top: 32px; }
@media (max-width: 860px) {
    .about-section { grid-template-columns: 1fr; gap: 32px; }
    .about-copy { max-width: 680px; }
    .about-figure { width: 100%; max-width: 460px; justify-self: center; }
}
@media (max-width: 420px) {
    .about-intro { margin-bottom: 32px; }
    .about-section { padding: 32px 0; }
    .exchange-drawing, .signing-drawing { grid-template-columns: minmax(0, 1fr) 22px minmax(0, 1fr) 22px minmax(0, 1fr); }
    .browser-drawing { width: 70px; }
    .checks-drawing { width: 76px; }
    .contribution-drawing { width: 58px; }
    .drawing-label { font-size: 12px; }
    .drawing-note { font-size: 11px; }
    .relay-drawing { font-size: 17px; }
}