:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, sans-serif; color: #18332f; background: #f5f1e8; }
* { box-sizing: border-box; }
body { margin: 0; }
button, input { font: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
main { width: min(1120px, calc(100% - 32px)); margin: auto; padding: 28px 0 80px; }
nav { display: flex; justify-content: space-between; }
a { color: #176f5f; font-weight: 700; }
header { padding: 90px 0 56px; max-width: 780px; }
.eyebrow, aside > span, .panel-heading span { color: #a04b2a; font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 12px 0 20px; font-family: Georgia, serif; font-size: clamp(3.1rem, 8vw, 6.4rem); line-height: .92; letter-spacing: -.055em; }
header > p:last-child { max-width: 700px; font-size: 1.15rem; line-height: 1.65; }
.notice, .catalogue-panel, aside, .boundary { border: 1px solid #cfc6b5; background: #fffdf8; border-radius: 18px; }
.notice { padding: 24px; margin-bottom: 28px; }
.workspace { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(270px, .7fr); gap: 20px; align-items: start; }
.catalogue-panel, aside { padding: 24px; }
.panel-heading { display: flex; justify-content: space-between; gap: 16px; align-items: center; border-bottom: 1px solid #e3ddd1; padding-bottom: 20px; }
.panel-heading h2 { margin: 6px 0 0; font-family: Georgia, serif; font-size: 2rem; }
.connection { display: flex; align-items: center; gap: 8px; }
.connection i { width: 9px; height: 9px; border-radius: 50%; background: #27a572; }
.items article { display: flex; justify-content: space-between; align-items: center; padding: 22px 0; border-bottom: 1px solid #eee8de; }
.items h3 { margin: 0 0 5px; }
.stepper { display: grid; grid-template-columns: 38px 48px 38px; align-items: center; text-align: center; }
.stepper button { width: 38px; height: 38px; border: 1px solid #cfc6b5; border-radius: 9px; background: white; }
.stepper output { font-weight: 800; }
.phase { color: #5f6d68; min-height: 1.4em; }
aside form { display: grid; gap: 14px; margin-top: 18px; }
label { display: grid; gap: 6px; font-weight: 700; }
input { width: 100%; padding: 11px; border: 1px solid #bbb2a4; border-radius: 8px; }
aside button { padding: 11px 14px; border: 0; border-radius: 8px; background: #176f5f; color: white; font-weight: 800; }
.boundary { margin-top: 60px; padding: 30px; }
.boundary h2 { font-family: Georgia, serif; font-size: 2rem; }
.boundary > div { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.boundary p { line-height: 1.6; }
code { background: #eee8de; padding: .15em .35em; border-radius: 4px; }
@media (max-width: 760px) { .workspace, .boundary > div { grid-template-columns: 1fr; } header { padding-top: 60px; } }