.guide-page { background: radial-gradient(circle at 78% 30%,rgba(255,255,255,.55),transparent 24%), #f1eadf; }
.guide-header { min-height: 92px; padding: 0 clamp(24px,6vw,94px); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(37,42,39,.17); }
.guide-header .brand svg { stroke: var(--brass); }
.back-link { min-height: 48px; display: flex; align-items: center; gap: 25px; border-bottom: 1px solid var(--brass); text-decoration: none; font-size: 9px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.back-link { transition: color .3s, letter-spacing .3s, border-color .3s; }
.back-link:hover, .back-link:focus-visible { color: var(--rose); letter-spacing: .16em; border-color: var(--rose); }
.back-link span { color: var(--rose); font-size: 16px; transition: transform .35s cubic-bezier(.16,1,.3,1); }
.back-link:hover span, .back-link:focus-visible span { transform: translate(4px,-4px); }
.guide-hero { min-height: 780px; padding: clamp(80px,10vw,150px) clamp(24px,7vw,110px) 90px; display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 60px; background: radial-gradient(circle at 77% 43%,#28566d 0,transparent 28%), linear-gradient(145deg,#12384b,var(--blue-dark) 64%,#102f3e); color: var(--linen); position: relative; overflow: hidden; }
.guide-hero::before { content: ''; position: absolute; inset: 0; opacity: .13; background: repeating-linear-gradient(115deg,transparent 0 13px,#fff 14px,transparent 15px 23px); }
.guide-hero::after { content: 'FIELD NOTE  /  MECHANISM  /  MATERIAL'; position: absolute; right: -20px; bottom: 18px; color: rgba(239,233,220,.07); font: 500 clamp(34px,6vw,90px)/1 var(--display); white-space: nowrap; }
.guide-hero > * { position: relative; }
.guide-hero .eyebrow { color: #a9c1cb; }
.guide-hero h1 { margin: 0; font: 400 clamp(76px,8.5vw,136px)/.76 var(--display); letter-spacing: -.05em; }
.guide-hero h1 i { color: #e29aa5; font-weight: 300; }
.guide-hero svg { width: 100%; overflow: visible; }
.guide-hero svg circle { fill: none; stroke: rgba(239,233,220,.3); stroke-width: 1; stroke-dasharray: 3 9; }
.guide-hero svg path { fill: none; stroke: #fff9ed; stroke-width: 4; filter: drop-shadow(0 3px 3px rgba(0,0,0,.28)); }
.guide-hero svg g circle { fill: var(--brass-light); stroke: #71471f; stroke-width: 4; stroke-dasharray: none; }
.guide-hero svg g path { stroke: var(--brass-light); stroke-width: 2; }
.guide-key { position: absolute; right: clamp(24px,7vw,110px); bottom: 90px; width: min(36vw,430px); display: grid; grid-template-columns: auto 1fr auto 1fr auto; align-items: center; gap: 10px; color: #c5d2d5; font-size: 7px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.guide-key span { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.guide-key b { color: #eea2ae; font: italic 500 22px var(--display); }
.guide-key i { height: 1px; background: rgba(239,233,220,.24); }
.guide-lede { grid-column: 1/-1; max-width: 770px; margin: 0; padding-top: 40px; border-top: 1px solid rgba(239,233,220,.2); color: #c1ced1; font: 400 clamp(22px,2vw,31px)/1.4 var(--display); }
.guide-article { padding: clamp(90px,11vw,170px) clamp(24px,7vw,110px); display: grid; grid-template-columns: .35fr 1.65fr; gap: clamp(45px,8vw,130px); background: radial-gradient(circle at 22% 18%,rgba(157,107,54,.07),transparent 23%); }
.guide-index { position: sticky; top: 40px; align-self: start; display: grid; grid-template-columns: 36px 1fr; border-top: 1px solid rgba(37,42,39,.25); }
.guide-index span, .guide-index a { min-height: 52px; display: flex; align-items: center; border-bottom: 1px solid rgba(37,42,39,.15); }
.guide-index span { color: var(--rose); font: 600 10px var(--display); }
.guide-index a { padding-inline: 8px; color: #4e5550; text-decoration: none; font-size: 9px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; transition: color .25s, background-color .25s, padding-left .35s cubic-bezier(.16,1,.3,1); }
.guide-index a:hover, .guide-index a:focus-visible { padding-left: 14px; color: var(--rose); background: rgba(157,107,54,.07); }
.guide-copy { max-width: 900px; }
.guide-copy section { padding-bottom: 115px; scroll-margin-top: 30px; position: relative; }
.guide-copy section::before { content: ''; position: absolute; left: -35px; top: 7px; width: 8px; height: 8px; border: 2px solid var(--brass); border-radius: 50%; box-shadow: 0 0 0 8px rgba(157,107,54,.08); }
.guide-copy section:last-child { padding-bottom: 0; }
.guide-copy h2 { max-width: 760px; margin: 0 0 36px; font: 400 clamp(50px,5.8vw,86px)/.92 var(--display); letter-spacing: -.035em; }
.guide-copy p { color: #494f4a; font-family: var(--display); font-size: 20px; line-height: 1.55; }
.field-note { width: 76%; margin: 45px 0 0 auto; padding: 24px 28px; border-left: 2px solid var(--rose); background: rgba(255,255,255,.34); }
.field-note span { color: var(--rose); font-size: 8px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.field-note p { margin: 5px 0 0; font-style: italic; }
.state-diagram { margin: 0 0 40px; padding: 25px 22px; border: 1px solid rgba(37,42,39,.17); display: grid; grid-template-columns: repeat(7,auto); align-items: center; gap: 12px; background: rgba(255,255,255,.2); }
.state-diagram span { display: grid; color: var(--blue-dark); font-size: 8px; font-weight: 700; letter-spacing: .05em; }
.state-diagram b { color: var(--rose); font: 500 20px var(--display); }
.state-diagram i { color: #7a7d76; font: italic 15px var(--display); }
.tech-list { border-top: 1px solid rgba(37,42,39,.2); }
.tech-list > div { padding: 26px 0; border-bottom: 1px solid rgba(37,42,39,.17); display: grid; grid-template-columns: 150px 1fr; gap: 30px; }
.tech-list b { color: var(--blue-dark); font: 600 12px var(--body); letter-spacing: .06em; }
.tech-list p { margin: 0; font-size: 17px; }
code { padding: .1em .35em; background: rgba(54,93,115,.1); color: var(--blue-dark); font: 600 .75em var(--body); }
.swatches { display: grid; grid-template-columns: repeat(5,1fr); margin: 40px 0; border: 1px solid rgba(37,42,39,.15); }
.swatches > div { padding: 13px; border-right: 1px solid rgba(37,42,39,.15); }
.swatches > div:last-child { border-right: 0; }
.swatches i { display: block; aspect-ratio: 1; background: var(--swatch); border: 1px solid rgba(37,42,39,.15); }
.swatches span { display: block; margin-top: 10px; color: var(--ink); font-size: 9px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.swatches b { display: block; color: #666c66; font-size: 7px; font-weight: 500; }
.type-specimen { margin-top: 42px; display: grid; grid-template-columns: 1.2fr .8fr; border-top: 1px solid rgba(37,42,39,.18); border-bottom: 1px solid rgba(37,42,39,.18); }
.type-specimen span { min-height: 145px; padding: 24px; color: #464b47; font: 500 14px var(--body); }
.type-specimen span + span { border-left: 1px solid rgba(37,42,39,.18); }
.type-specimen b { display: block; color: var(--blue-dark); font: 400 54px/.8 var(--display); }
.type-specimen span:last-child b { font-family: var(--body); font-size: 40px; font-weight: 600; letter-spacing: -.05em; }
.type-specimen small { color: #696d68; font: italic 17px var(--display); }
.type-specimen span:last-child small { font: 650 7px var(--body); letter-spacing: .11em; }
.reproduce { padding: 65px !important; background: var(--blue); color: var(--linen); position: relative; }
.reproduce::before { content: ''; position: absolute; inset: 18px; border: 1px dashed rgba(239,233,220,.25); pointer-events: none; }
.reproduce .eyebrow { color: #b9ccd4; }
.reproduce h2, .reproduce p { position: relative; }
.reproduce p { color: #e1e6e4; }
.reproduce em { color: #ffc0c9; }
.guide-closing { min-height: 500px; padding: 70px 24px; background: radial-gradient(circle at 50% 20%,#bc5265,transparent 38%), linear-gradient(145deg,#963549,var(--rose)); color: #fff9ed; display: grid; place-content: center; text-align: center; position: relative; overflow: hidden; }
.guide-closing::before, .guide-closing::after { content: ''; position: absolute; left: -5%; top: 23%; width: 110%; height: 120px; border-top: 2px solid rgba(255,249,237,.17); border-radius: 50%; transform: rotate(4deg); }
.guide-closing::after { top: 38%; transform: rotate(-6deg); }
.guide-closing p { margin: 0; font: 400 clamp(65px,9vw,125px)/.8 var(--display); letter-spacing: -.04em; }
.guide-closing p i { font-weight: 300; }
.guide-closing a { justify-self: center; min-height: 48px; margin-top: 45px; border-bottom: 1px solid rgba(255,255,255,.6); display: flex; align-items: center; text-decoration: none; font-size: 9px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; transition: letter-spacing .35s, border-color .35s; }
.guide-closing a:hover, .guide-closing a:focus-visible { letter-spacing: .17em; border-color: #fff; }

@media (max-width: 850px) {
  .guide-hero { min-height: 700px; grid-template-columns: 1fr .55fr; }
  .guide-article { grid-template-columns: 1fr; }
  .guide-index { position: relative; top: auto; grid-template-columns: repeat(4,1fr); gap: 0; }
  .guide-index span { display: none; }
  .guide-index a { justify-content: center; border: 1px solid rgba(37,42,39,.15); }
  .guide-key { right: 7vw; bottom: 70px; }
}
@media (max-width: 600px) {
  .guide-header { min-height: 76px; padding-inline: 18px; }
  .guide-header .brand { font-size: 17px; }
  .guide-header .brand svg { width: 36px; }
  .back-link { width: 48px; justify-content: center; border: 0; font-size: 0; }
  .back-link span { font-size: 18px; }
  .guide-hero { min-height: auto; padding: 68px 20px 55px; display: block; }
  .guide-hero h1 { font-size: clamp(62px,18.5vw,78px); }
  .guide-hero svg { width: 68%; margin: 30px 16% 20px; }
  .guide-key { position: relative; right: auto; bottom: auto; width: 100%; margin: 0 0 28px; }
  .guide-lede { padding-top: 26px; font-size: 22px; }
  .guide-article { padding-inline: 20px; }
  .guide-index { grid-template-columns: 1fr 1fr; }
  .guide-copy section { padding-bottom: 85px; }
  .guide-copy section::before { display: none; }
  .guide-copy h2 { font-size: 49px; }
  .guide-copy p { font-size: 18px; }
  .field-note { width: 94%; padding-inline: 20px; }
  .state-diagram { grid-template-columns: 1fr auto 1fr; padding: 18px; }
  .state-diagram span:nth-of-type(3), .state-diagram span:nth-of-type(4), .state-diagram i:nth-of-type(3) { margin-top: 12px; }
  .tech-list > div { grid-template-columns: 1fr; gap: 8px; }
  .swatches { grid-template-columns: 1fr 1fr; }
  .swatches > div { border-bottom: 1px solid rgba(37,42,39,.15); }
  .swatches i { aspect-ratio: 1.4; }
  .type-specimen { grid-template-columns: 1fr; }
  .type-specimen span + span { border-left: 0; border-top: 1px solid rgba(37,42,39,.18); }
  .reproduce { margin-inline: -20px; padding: 55px 34px !important; }
}