/* ============ Methodology page ============ */
.read-bar { position: fixed; z-index: 60; top: 0; inset-inline: 0; height: 3px; background: transparent; pointer-events: none; }
.read-bar span { display: block; height: 100%; background: var(--ochre); transform-origin: right; transform: scaleX(0); }

.md-hero { padding: 150px 0 70px; overflow: clip; }
.md-top { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(30px, 5vw, 70px); align-items: center; }
.md-title { font: 700 clamp(2.8rem, 4.9vw, 5.2rem)/1.3 var(--display); margin-bottom: 22px; }
.md-title .accent { color: var(--ochre); }
.md-toc { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.md-toc a { display: inline-flex; align-items: center; gap: 10px; padding: 9px 18px 9px 14px; border-radius: 99px; border: 1px solid var(--line); background: var(--card); text-decoration: none; font-weight: 600; transition: border-color .3s; }
.md-toc a:hover { border-color: rgba(27, 26, 23, .4); }
.md-toc span { font: 700 1rem var(--display); color: var(--ochre); }

/* hero visual: the official document gets its stamp */
.doc { position: relative; justify-self: center; width: min(400px, 100%); }
.doc-page { padding: 36px 30px 34px; background: #fffdf7; border-radius: 6px; transform: rotate(2deg); box-shadow: 0 40px 70px -40px rgba(27, 26, 23, .55), 0 0 0 1px rgba(27, 26, 23, .07), 8px 8px 0 -1px #f3ecdc, 8px 8px 0 0 rgba(27, 26, 23, .1); }
.doc-kicker { font-size: .8rem; color: var(--muted); letter-spacing: .02em; }
.doc-title { font: 700 1.9rem/1.3 var(--display); margin: 4px 0 18px; padding-bottom: 14px; border-bottom: 2px solid var(--ink); }
.doc-list { display: grid; gap: 12px; margin-bottom: 22px; }
.doc-list li { display: grid; grid-template-columns: auto minmax(20px, 1fr) auto; align-items: baseline; gap: 8px; font-weight: 600; }
.doc-list i { align-self: end; height: 4px; margin-bottom: .42em; background: radial-gradient(circle, rgba(27, 26, 23, .4) 1.1px, transparent 1.5px) center / 6px 4px repeat-x; }
.doc-list b { font: 700 1.2rem var(--display); color: var(--ochre); }
.doc-lines { display: grid; gap: 9px; }
.doc-lines i { display: block; height: 7px; border-radius: 4px; background: rgba(27, 26, 23, .08); }
.doc-lines i:nth-child(2) { width: 88%; } .doc-lines i:nth-child(3) { width: 94%; } .doc-lines i:nth-child(4) { width: 60%; }
.stamp { position: absolute; left: -8%; bottom: -6%; width: 150px; height: 150px; border-radius: 50%; display: grid; place-items: center; text-align: center; border: 4px solid rgba(181, 72, 42, .9); box-shadow: inset 0 0 0 6px #fffdf7, inset 0 0 0 8px rgba(181, 72, 42, .9); color: rgba(181, 72, 42, .95); font: 700 1.35rem/1.25 var(--display); transform: rotate(-14deg); mix-blend-mode: multiply; }

.md-intro { margin-top: 18px; }

/* principles: a big counting numeral beside the list */
.md-principles { padding: var(--sec) 0; border-top: 1px solid var(--line); }
.pr-wrap { display: grid; grid-template-columns: minmax(180px, .5fr) 1fr; gap: clamp(30px, 6vw, 90px); margin-top: clamp(40px, 6vw, 70px); align-items: start; }
.pr-big { display: grid; justify-items: center; gap: 4px; padding-top: 10px; }
.pr-big .pr-digit { display: block; font: 700 clamp(8rem, 16vw, 13rem)/1 var(--display); color: var(--ochre); overflow: hidden; }
.pr-big small { color: var(--muted); font-weight: 600; }
.pr-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.pr-item { padding: clamp(28px, 4vw, 44px) 0; border-bottom: 1px solid var(--line); }
.pr-item > * { opacity: .3; transition: opacity .45s; }
.pr-item.is-on > * { opacity: 1; }
.pr-n { display: none; font: 700 1.1rem var(--display); color: var(--ochre); }
.pr-item h3 { font: 700 clamp(1.6rem, 2.6vw, 2.2rem)/1.4 var(--display); margin-bottom: 10px; }
.pr-item p { color: var(--muted); font-size: 1.08rem; max-width: 52ch; }

/* steps: a vertical rail that fills as you read */
.md-steps { padding: var(--sec) 0; background: var(--paper-2); border-block: 1px solid var(--line); }
.timeline { position: relative; margin-top: clamp(40px, 6vw, 70px); }
.tl-rail { position: absolute; top: 28px; bottom: 28px; right: 31px; width: 2px; background: var(--sand); }
.tl-fill { display: block; width: 100%; height: 100%; background: var(--ink); transform-origin: top; transform: scaleY(0); }
.timeline ol { display: grid; gap: clamp(28px, 4vw, 44px); }
.tl-step { position: relative; display: grid; grid-template-columns: 64px 1fr; gap: clamp(18px, 3vw, 36px); align-items: start; }
.tl-node { position: relative; z-index: 1; width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; background: var(--card); border: 1.5px solid var(--sand); transition: border-color .4s; }
.tl-step.is-on .tl-node { border-color: var(--ink); }
.tl-node .ic { width: 34px; height: 34px; }
.tl-n { font-size: .85rem; font-weight: 700; color: var(--ochre); }
.tl-body h3 { font: 700 clamp(1.5rem, 2.4vw, 2rem)/1.4 var(--display); margin: 2px 0 8px; }
.tl-body p { color: var(--muted); max-width: 60ch; }
.md-note { margin-top: 36px; max-width: 70ch; }

/* if things go wrong */
.md-if { padding: var(--sec) 0; }

/* after launch */
.md-after { padding: var(--sec) 0; background: var(--paper-2); border-top: 1px solid var(--line); }
.after-grid { display: grid; grid-template-columns: minmax(140px, .4fr) 1fr; gap: clamp(30px, 6vw, 90px); align-items: center; }
.after-grid > div:last-child { display: grid; gap: 18px; justify-items: start; }
.after-ic { display: grid; place-items: center; }
.after-ic .ic { width: min(220px, 40vw); height: auto; stroke-width: 1.4; }

@media (max-width: 900px) {
	.md-hero { padding: 120px 0 50px; }
	.md-top { grid-template-columns: minmax(0, 1fr); }
	.doc { width: min(330px, 88%); margin-top: 20px; }
	.stamp { width: 118px; height: 118px; font-size: 1.1rem; left: -4%; }
	.pr-wrap { grid-template-columns: 1fr; }
	.pr-big { display: none; }
	.pr-item > * { opacity: 1; }
	.pr-n { display: block; }
	.after-grid { grid-template-columns: 1fr; }
	.after-ic .ic { width: 120px; }
}

.js .md-title, .js .md-hero .lead, .js .md-toc, .js .doc { visibility: hidden; }
html:not(.js) .pr-item > * { opacity: 1; }