:root {
--ink: #201D33;
--paper: #F8F8F5;
--paper-dim: #ECEBE4;
--lime: #B8D94A;
--violet: #6D5BD0;
--violet-deep: #4E3EA8;
--violet-hi: #A99BF0;
--slate: #55516B;
--rule: #DBD9D0;
--measure: 68ch;
--gap: 1.5rem;
color-scheme: light;
}
[hidden] { display: none !important; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
margin: 0; background: var(--paper); color: var(--ink);
font: 400 1.05rem/1.66 system-ui, -apple-system, "Segoe UI", sans-serif;
}
img { max-width: 100%; height: auto; }
a { color: var(--violet-deep); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
h1, h2, h3 { line-height: 1.16; margin: 0 0 .6rem; font-weight: 760; letter-spacing: -.012em; }
h1 { font-size: clamp(1.95rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }
h3 { font-size: 1.14rem; font-weight: 700; }
p { margin: 0 0 1rem; max-width: var(--measure); }
.lede { font-size: 1.15rem; color: var(--slate); }
.shell { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }
.narrow { max-width: 46rem; }
.section { padding: 3.5rem 0; }
.section--dim { background: var(--paper-dim); }
.section--ink { background: var(--ink); color: var(--paper); }
.section--ink a { color: var(--violet-hi); }
.section--ink a:hover { color: var(--paper); }
.section--ink .lede { color: #BCB8CE; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.site-header { background: var(--ink); }
.site-header .shell { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: .95rem; padding-bottom: .95rem; }
.brand { color: var(--paper); text-decoration: none; font-weight: 780; font-size: 1.13rem; }
.brand .cursor { color: var(--lime); }
.nav { display: flex; gap: 1.15rem; flex-wrap: wrap; }
.nav a { color: var(--paper); text-decoration: none; font-weight: 600; font-size: .95rem; }
.nav a:hover, .nav a[aria-current] { color: var(--lime); }
.btn {
display: inline-block; padding: .8rem 1.5rem; font: 700 1rem/1 system-ui, sans-serif;
text-decoration: none; letter-spacing: .01em; border-radius: 7px;
border: 2px solid var(--violet-deep); background: var(--violet-deep); color: var(--paper); cursor: pointer;
}
.btn:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.btn--lime { background: var(--lime); border-color: var(--lime); color: var(--ink); }
.btn--lime:hover { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.section--ink .btn--outline { background: transparent; border-color: var(--paper); color: var(--paper); }
.section--ink .btn--outline:hover { background: var(--paper); color: var(--ink); }
.ledger { display: grid; gap: var(--gap); margin-top: 2.2rem; grid-template-columns: 1fr; }
@media (min-width: 800px) { .ledger { grid-template-columns: 1fr 1fr; } }
.ledger > div { border-radius: 10px; padding: 1.5rem 1.6rem; }
.ledger .works { background: var(--ink); color: var(--paper); }
.ledger .works h3 { color: var(--lime); }
.ledger .noise { background: var(--paper-dim); border: 1px solid var(--rule); }
.ledger .noise h3 { color: var(--slate); }
.ledger ul { list-style: none; margin: .8rem 0 0; padding: 0; }
.ledger li { padding: .45rem 0 .45rem 1.7rem; position: relative; }
.ledger .works li::before { content: ""; position: absolute; left: 0; top: .95rem; width: .8rem; height: .45rem; border-left: 3px solid var(--lime); border-bottom: 3px solid var(--lime); transform: rotate(-45deg); }
.ledger .noise li { color: var(--slate); }
.ledger .noise li::before { content: "×"; position: absolute; left: .1rem; top: .38rem; font-weight: 800; color: var(--slate); }
.prose h2 { margin-top: 2rem; }
.prose ul { padding-left: 1.3rem; }
.prose li { margin-bottom: .4rem; }
.prose-diagram { display: block; width: 100%; height: auto; margin: 0 0 2.4rem; }
.post-meta { font-size: .88rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--violet-deep); }
.tip { border-left: 4px solid var(--lime); background: var(--paper-dim); padding: .9rem 1.1rem; border-radius: 0 8px 8px 0; max-width: var(--measure); margin-bottom: 1.2rem; }
.tip strong { display: block; margin-bottom: .2rem; }
.lead-form { margin-top: 1.5rem; }
.form-grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 640px) {
.form-grid { grid-template-columns: 1fr 1fr; }
.field--full, .form-actions, .form-status { grid-column: 1 / -1; }
}
.field label { display: block; font-weight: 700; font-size: .92rem; margin-bottom: .3rem; }
.field input, .field textarea, .field select {
width: 100%; font: inherit; color: var(--ink); background: var(--paper);
border: 2px solid var(--slate); padding: .7rem .8rem; border-radius: 7px;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: 3px solid var(--violet); outline-offset: 1px; }
.hp { position: absolute; left: -9999px; }
.form-status { font-weight: 700; }
::placeholder { color: var(--slate); opacity: .7; }
.site-footer { background: var(--ink); color: var(--paper); padding: 2.6rem 0; }
.site-footer a { color: var(--violet-hi); }
.site-footer a:hover { color: var(--paper); }
.footer-grid { display: grid; gap: var(--gap); grid-template-columns: 1fr; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }
.footer-note { border-top: 1px solid #3B3752; margin-top: 2rem; padding-top: 1.2rem; font-size: .85rem; color: #BCB8CE; }
a:focus-visible, .btn:focus-visible, button:focus-visible {
outline: 3px solid var(--violet); outline-offset: 2px;
}
.section--ink a:focus-visible, .section--ink .btn:focus-visible { outline-color: var(--lime); }
@media (prefers-reduced-motion: no-preference) {
a, .btn { transition: color .15s ease, background-color .15s ease, border-color .15s ease; }
}
@media (prefers-reduced-motion: reduce) {
*, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
.fig { margin: 1.9rem 0 2.3rem; max-width: var(--measure); }
.fig svg { display: block; width: 100%; height: auto; }
.fig figcaption { font-size: .92rem; color: var(--slate); margin-top: .65rem; }
.fig-tag {
display: inline-block; font-size: .72rem; font-weight: 800; letter-spacing: .08em;
text-transform: uppercase; color: var(--violet-deep); border: 1px solid var(--rule);
border-radius: 4px; padding: .05rem .35rem; margin-right: .45rem;
}
.fig-method { font-size: .86rem; color: var(--slate); margin-top: .7rem; max-width: var(--measure); }
.fig-method strong { color: var(--ink); }
.fig-method a, .source-list a, .data-table a { overflow-wrap: anywhere; }
.pullquote {
margin: 1.9rem 0 2.3rem; max-width: var(--measure); background: var(--paper-dim);
border-left: 4px solid var(--lime); border-radius: 0 10px 10px 0; padding: 1.4rem 1.5rem;
}
.pullquote blockquote { margin: 0; }
.pullquote blockquote p {
margin: 0; max-width: none; color: var(--ink); font-weight: 720;
font-size: clamp(1.22rem, 3vw, 1.6rem); line-height: 1.3; letter-spacing: -.012em;
}
.pullquote figcaption { margin-top: .95rem; font-size: .92rem; color: var(--slate); }
.pullquote .who { display: block; font-weight: 700; }
.pullquote .note { display: block; margin-top: .25rem; }
.data-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0 .5rem; font-size: .95rem; }
.data-table caption { text-align: left; font-size: .88rem; color: var(--slate); margin-bottom: .55rem; }
.data-table th, .data-table td { text-align: left; vertical-align: top; padding: .7rem .8rem; border-bottom: 1px solid var(--rule); }
.data-table thead th { background: var(--ink); color: var(--paper); border-bottom: none; font-size: .86rem; }
.data-table tbody th { font-weight: 700; }
@media (max-width: 639px) {
.data-table, .data-table tbody, .data-table tr, .data-table th, .data-table td, .data-table caption { display: block; }
.data-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.data-table tr { background: var(--paper-dim); border: 1px solid var(--rule); border-radius: 10px; padding: .5rem 0; margin-bottom: 1rem; }
.data-table th, .data-table td { border-bottom: none; padding: .4rem 1rem; }
.data-table tbody th { font-size: 1.05rem; padding-top: .55rem; }
.data-table td::before {
content: attr(data-label); display: block; font-size: .76rem; font-weight: 800;
letter-spacing: .06em; text-transform: uppercase; color: var(--slate);
}
}
ul.checklist {
list-style: none; margin: 1.5rem 0 2rem; padding: 0; max-width: var(--measure);
background: var(--paper-dim); border: 1px solid var(--rule); border-radius: 10px;
}
.checklist li { margin: 0; border-top: 1px solid var(--rule); }
.checklist li:first-child { border-top: none; }
.checklist label { display: flex; gap: .75rem; align-items: flex-start; padding: .75rem 1rem; cursor: pointer; }
.checklist input { flex: 0 0 auto; width: 1.2rem; height: 1.2rem; margin: .22rem 0 0; accent-color: var(--violet-deep); }
.checklist input:checked ~ span { color: var(--slate); }
.fig svg.diagram-wide { display: none; }
.fig svg.diagram-phone { display: block; max-width: 26rem; margin: 0 auto; }
@media (min-width: 640px) {
.fig svg.diagram-wide { display: block; }
.fig svg.diagram-phone { display: none; }
}
.flow-star { transform-box: view-box; transform-origin: 0 0; }
@media (prefers-reduced-motion: no-preference) {
.flow-star--reply { animation: flow-reply 13s ease-in-out infinite backwards; }
.flow-star--flag { animation: flow-flag 13s ease-in-out 1.1s infinite backwards; }
}
@keyframes flow-reply {
0% { transform: translateX(0); opacity: 0; }
5%, 20% { transform: translateX(0); opacity: 1; }
30%, 46% { transform: translateX(202px); opacity: 1; }
56%, 92% { transform: translateX(432px); opacity: 1; }
100% { transform: translateX(432px); opacity: 0; }
}
@keyframes flow-flag {
0% { transform: translateX(0); opacity: 0; }
5%, 20% { transform: translateX(0); opacity: 1; }
30%, 46% { transform: translateX(172px); opacity: 1; }
56%, 92% { transform: translateX(402px); opacity: 1; }
100% { transform: translateX(402px); opacity: 0; }
}
.source-list { font-size: .95rem; }
a.btn, a.btn:hover { color: var(--paper); }
a.btn--lime, a.btn--lime:hover { color: var(--ink); }
.section--ink a.btn--outline { color: var(--paper); }
.section--ink a.btn--outline:hover { color: var(--ink); }