/* Steeplejack Robotics — component and responsive styles */
:root { --header-h: 5.5rem; }

html { scroll-behavior: smooth; }
.site-header { position: fixed; inset: 0 0 auto; z-index: 50; width: 100%; height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: .75rem var(--gutter); border-bottom: 1px solid transparent; transition: background var(--dur-fast), border-color var(--dur-fast); }
.site-header[data-scrolled] { background: rgb(252 252 253 / .96); border-color: var(--rule-soft); backdrop-filter: blur(12px); }
.brand { display: block; width: clamp(11rem, 18vw, 15rem); }
.brand img { width: 100%; height: auto; }
.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2.5rem); }
.site-nav a { color: var(--navy); font-family: var(--font-display); font-size: .72rem; font-weight: 700; letter-spacing: .09em; text-decoration: none; text-transform: uppercase; }
.site-nav a::after { content: ''; display: block; width: 0; height: 2px; margin-top: .2rem; background: var(--orange); transition: width var(--dur-fast); }
.site-nav a:hover::after, .site-nav a:focus-visible::after { width: 100%; }
.nav-toggle { display: none; border: 0; background: none; color: var(--navy); font: 700 .75rem var(--font-display); letter-spacing: .08em; text-transform: uppercase; }

.hero { position: relative; min-height: min(58rem, 100svh); padding: calc(var(--header-h) + var(--space-xl)) var(--gutter) var(--space-xl); display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(22rem, .94fr); align-items: center; gap: clamp(2rem, 7vw, 8rem); overflow: hidden; background: linear-gradient(110deg, var(--bg) 0 58%, var(--bg-sunk) 58%); }
.hero__content { max-width: 52rem; position: relative; z-index: 2; }
.eyebrow, .kicker { color: var(--orange-ink); font: 700 .72rem/1.2 var(--font-display); letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { margin-left: .8rem; padding-left: .8rem; border-left: 1px solid var(--rule); color: var(--ink-soft); }
.hero h1 { margin-top: var(--space-m); font-size: clamp(2.65rem, 5.2vw, 6rem); line-height: .98; letter-spacing: -.055em; text-transform: uppercase; }
.hero h1 em { color: var(--orange-ink); font-style: normal; }
.hero__thesis { margin-top: var(--space-l); font: 700 clamp(1.2rem, 1.7vw, 1.65rem) var(--font-display); letter-spacing: .03em; text-transform: uppercase; }
.hero__copy { max-width: 40rem; margin-top: var(--space-s); color: var(--ink-soft); font-size: clamp(1.06rem, 1.3vw, 1.25rem); }
.button-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: var(--space-l); }
.button { min-height: 3.25rem; display: inline-flex; align-items: center; justify-content: center; gap: 1rem; padding: .7rem 1.35rem; border: 1px solid var(--navy); color: var(--navy); font: 700 .75rem var(--font-display); letter-spacing: .1em; text-decoration: none; text-transform: uppercase; transition: color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast); }
.button:hover { transform: translateY(-2px); }
.button--primary { background: var(--navy); color: white; }
.button--primary:hover { background: #0d315b; }
.button--ghost:hover { background: var(--navy); color: white; }
.hero__visual { position: relative; align-self: stretch; display: grid; place-content: center; min-height: 36rem; }
.hero__visual svg { position: relative; z-index: 1; width: min(100%, 29rem); max-height: 68vh; }
.tower { fill: none; stroke: var(--navy); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; opacity: .92; }
.antennae { fill: var(--navy); }
.machine rect { fill: var(--navy); }.machine path { fill: none; stroke: var(--navy); stroke-width: 12; stroke-linecap: round; stroke-linejoin: round; }.machine circle { fill: var(--orange); stroke: var(--navy); stroke-width: 5; }
.hero__visual p { position: absolute; right: 0; bottom: var(--space-m); padding-left: 1rem; border-left: 3px solid var(--orange); color: var(--navy); font: 600 .78rem/1.4 var(--font-display); text-transform: uppercase; }
.hero__visual p span { color: var(--ink-soft); font: 400 .68rem var(--font-body); letter-spacing: .04em; }
.signal { position: absolute; border: 1px solid var(--orange-edge); border-radius: 50%; }.signal--one { width: 28rem; height: 28rem; }.signal--two { width: 38rem; height: 38rem; opacity: .6; }
.hero__scroll { position: absolute; z-index: 2; bottom: var(--space-m); left: var(--gutter); color: var(--navy); font: 700 .68rem var(--font-display); letter-spacing: .1em; text-decoration: none; text-transform: uppercase; }.hero__scroll span { color: var(--orange-ink); margin-right: .75rem; }.hero__scroll b { margin-left: .5rem; }

.section { padding: var(--space-3xl) var(--gutter); }
.section__intro { display: grid; grid-template-columns: minmax(10rem, .42fr) minmax(18rem, 1fr) minmax(16rem, .7fr); align-items: start; gap: clamp(1.5rem, 4vw, 5rem); max-width: var(--page-max); margin-inline: auto; }
.section__intro h2 { font-size: clamp(2rem, 3.4vw, 4rem); letter-spacing: -.045em; }
.section__intro > p:last-child { max-width: 32rem; color: var(--ink-soft); font-size: var(--step-1); line-height: 1.5; }
.problem-flow { max-width: 64rem; margin: var(--space-2xl) auto; display: grid; grid-template-columns: 1fr auto 1fr; gap: var(--space-l); align-items: center; }
.flow-card { position: relative; min-height: 20rem; padding: var(--space-l); border: 1px solid var(--rule); background: white; box-shadow: var(--shadow-s); display: flex; flex-direction: column; justify-content: flex-end; }
.flow-card--risk { border-top: 4px solid var(--orange); }
.flow-card__index { position: absolute; top: 1rem; right: 1rem; color: var(--ink-soft); font: 600 .7rem var(--font-display); }
.flow-card svg { width: 5rem; margin-bottom: auto; fill: none; stroke: var(--navy); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.flow-card h3 { font-size: var(--step-2); text-transform: uppercase; }.flow-card p { color: var(--ink-soft); }.flow-arrow { color: var(--orange-ink); font-size: 2rem; }
.statement { max-width: 62rem; margin-inline: auto; padding: var(--space-l) 0 0 var(--space-l); border-left: 4px solid var(--orange); }.statement p { font: 400 clamp(1.45rem, 2.4vw, 2.2rem)/1.35 var(--font-body); }
.section--navy { background: var(--navy); color: white; }.section--navy h2, .section--navy .kicker { color: white; }.section--navy .kicker { opacity: .65; }.section--navy .section__intro > p:last-child { color: #b9c5d2; }
.large-line { max-width: var(--page-max); margin: var(--space-2xl) auto 0; padding-top: var(--space-xl); border-top: 1px solid rgb(255 255 255 / .2); font: 700 clamp(2.2rem, 5vw, 5.8rem)/1.05 var(--font-display); letter-spacing: -.05em; text-transform: uppercase; }.large-line em { color: var(--orange); font-style: normal; }
.process { max-width: var(--page-max); margin: var(--space-2xl) auto 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); list-style: none; counter-reset: item; }
.process li { position: relative; min-height: 14rem; padding: var(--space-m); border: 1px solid var(--rule); border-right: 0; display: flex; flex-direction: column; }.process li:last-child { border-right: 1px solid var(--rule); }.process li::after { content: '→'; position: absolute; z-index: 2; top: 50%; right: -.7rem; color: var(--orange-ink); background: var(--bg); font-size: 1.2rem; }.process li:last-child::after { display: none; }.process li > span { color: var(--orange-ink); font: 700 .7rem var(--font-display); }.process strong { margin-top: auto; font: 700 1rem var(--font-display); text-transform: uppercase; }.process small { margin-top: .4rem; color: var(--ink-soft); line-height: 1.35; }
.tasks { background: var(--navy); color: white; }.tasks h2, .tasks .kicker { color: white; }.tasks .kicker { opacity: .65; }.tasks .section__intro > p:last-child { color: #b9c5d2; }
.task-grid { max-width: var(--page-max); margin: var(--space-2xl) auto 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgb(255 255 255 / .2); list-style: none; }.task-grid li { min-height: 9rem; padding: var(--space-m); border-right: 1px solid rgb(255 255 255 / .2); border-bottom: 1px solid rgb(255 255 255 / .2); font: 600 var(--step-1)/1.3 var(--font-display); }.task-grid li:nth-child(3n) { border-right: 0; }.task-grid span { display: block; margin-bottom: var(--space-m); color: var(--orange); font-size: .7rem; }
.teleop__diagram { max-width: var(--page-max); margin: var(--space-2xl) auto 0; display: flex; align-items: stretch; }.teleop__diagram span { flex: 1; min-height: 7.5rem; padding: 1.2rem; border: 1px solid var(--rule); display: grid; place-items: center; text-align: center; font: 700 .8rem var(--font-display); text-transform: uppercase; }.teleop__diagram b { display: grid; place-items: center; width: 3rem; color: var(--orange-ink); }
.maturity { max-width: var(--page-max); margin: var(--space-xl) auto 0; padding: var(--space-m); background: var(--orange-wash); border: 1px solid var(--orange-edge); display: flex; align-items: center; justify-content: space-between; gap: var(--space-l); }.maturity p { color: var(--orange-ink); font: 700 .7rem var(--font-display); letter-spacing: .1em; text-transform: uppercase; }.maturity div { display: flex; align-items: center; gap: clamp(.6rem, 2vw, 2rem); }.maturity strong { font-family: var(--font-display); text-transform: uppercase; }.maturity span { color: var(--orange-ink); }
.section--sunk { background: var(--bg-sunk); }.safety-grid { max-width: var(--page-max); margin: var(--space-2xl) auto 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); list-style: none; }.safety-grid li { min-height: 11rem; padding: var(--space-l); background: white; display: flex; flex-direction: column; }.safety-grid i { color: var(--orange-ink); font: normal 700 .7rem var(--font-display); }.safety-grid strong { margin-top: auto; font: 700 1rem var(--font-display); text-transform: uppercase; }.safety-grid span { color: var(--ink-soft); }
.why-uk { border-bottom: 1px solid var(--rule); }.uk-list { max-width: var(--page-max); margin: var(--space-2xl) auto 0; display: grid; grid-template-columns: repeat(5, 1fr); }.uk-list p { padding: var(--space-m); border-left: 1px solid var(--rule); font: 700 .85rem/1.35 var(--font-display); text-transform: uppercase; }.uk-list p:last-child { border-right: 1px solid var(--rule); }
.programme { max-width: calc(var(--page-max) + 2 * var(--gutter)); margin-inline: auto; display: grid; grid-template-columns: minmax(12rem, .55fr) 1fr; gap: clamp(2rem, 7vw, 8rem); align-items: center; }.programme__number { color: var(--orange); font: 800 clamp(9rem, 22vw, 22rem)/.75 var(--font-display); letter-spacing: -.12em; }.programme h2 { margin-top: var(--space-s); font-size: clamp(2.2rem, 4vw, 4.5rem); }.programme__lead { max-width: 46rem; margin-top: var(--space-l); font: 600 clamp(1.3rem, 2vw, 1.8rem)/1.4 var(--font-body); }.programme__lead + p { max-width: 44rem; margin-top: var(--space-m); color: var(--ink-soft); }
.paper { position: relative; min-height: 42rem; padding: var(--space-3xl) max(var(--gutter), calc((100vw - var(--page-max)) / 2)); overflow: hidden; background: var(--navy); color: white; }.paper::after { content: ''; position: absolute; width: min(50vw, 42rem); aspect-ratio: 1; right: -8rem; bottom: -16rem; border: clamp(2rem, 5vw, 5rem) solid var(--orange); border-radius: 50%; opacity: .9; }.paper .kicker, .paper h2 { color: white; }.paper h2 { max-width: 52rem; margin-top: var(--space-s); font-size: clamp(4rem, 9vw, 9rem); line-height: .82; letter-spacing: -.07em; text-transform: uppercase; }.paper > p:not(.kicker) { max-width: 38rem; margin-top: var(--space-l); color: #c7d1dc; font-size: var(--step-1); }.paper__meta { display: flex; gap: 2rem; margin-bottom: var(--space-xl); font: 600 .68rem var(--font-display); letter-spacing: .1em; text-transform: uppercase; }.paper__meta span:last-child { color: var(--orange); }.button--light { position: relative; z-index: 2; margin-top: var(--space-l); border-color: white; color: white; }.button--light:hover { background: white; color: var(--navy); }.paper small { display: block; margin-top: var(--space-s); color: #9eacbb; }
.site-footer { min-height: 15rem; padding: var(--space-xl) var(--gutter); display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: end; gap: var(--space-l); border-top: 5px solid var(--orange); }.footer-brand { display: flex; align-items: center; gap: .8rem; color: var(--navy); font: 800 .9rem/1.05 var(--font-display); letter-spacing: .04em; text-decoration: none; text-transform: uppercase; }.footer-brand img { width: 3.5rem; height: 4rem; object-fit: contain; }.site-footer > p { color: var(--ink-soft); }.site-footer > p:last-child { text-align: right; }.site-footer a { font-weight: 600; }

@media (max-width: 900px) {
  :root { --header-h: 4.75rem; }
  .site-header { background: rgb(252 252 253 / .96); border-bottom-color: var(--rule-soft); }
  .nav-toggle { display: flex; align-items: center; gap: .7rem; padding: .7rem 0; cursor: pointer; }.nav-toggle__icon, .nav-toggle__icon::before, .nav-toggle__icon::after { display: block; width: 1.4rem; height: 2px; background: currentColor; content: ''; transition: transform var(--dur-fast); }.nav-toggle__icon { position: relative; }.nav-toggle__icon::before { position: absolute; transform: translateY(-6px); }.nav-toggle__icon::after { position: absolute; transform: translateY(6px); }.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: rotate(45deg); }.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: rotate(-45deg); }
  .site-nav { position: absolute; inset: var(--header-h) 0 auto; padding: var(--space-m) var(--gutter) var(--space-l); background: var(--bg); border-bottom: 1px solid var(--rule); box-shadow: var(--shadow-m); flex-direction: column; align-items: flex-start; visibility: hidden; opacity: 0; transform: translateY(-.5rem); transition: opacity var(--dur-fast), transform var(--dur-fast), visibility var(--dur-fast); }.site-nav[data-open] { visibility: visible; opacity: 1; transform: none; }.site-nav a { width: 100%; padding: .5rem 0; font-size: .85rem; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: calc(var(--header-h) + var(--space-xl)); background: linear-gradient(180deg, var(--bg) 0 60%, var(--bg-sunk) 60%); }.hero__visual { min-height: 31rem; }.hero__visual svg { max-height: 31rem; }.hero__scroll { display: none; }
  .section__intro { grid-template-columns: 1fr 1.7fr; }.section__intro > p:last-child { grid-column: 2; }
  .process { grid-template-columns: repeat(2, 1fr); }.process li { min-height: 11rem; border: 1px solid var(--rule); }.process li::after { display: none; }
  .task-grid, .safety-grid { grid-template-columns: repeat(2, 1fr); }.task-grid li:nth-child(3n) { border-right: 1px solid rgb(255 255 255 / .2); }.task-grid li:nth-child(2n) { border-right: 0; }
  .teleop__diagram { display: grid; grid-template-columns: 1fr 2rem 1fr; }.teleop__diagram b { width: 2rem; }.teleop__diagram span:last-child { grid-column: 3; }
  .uk-list { grid-template-columns: repeat(2, 1fr); }.uk-list p { border: 1px solid var(--rule); margin: -1px 0 0 -1px; }
}

@media (max-width: 600px) {
  .site-header { gap: 1rem; }.brand { width: 9.5rem; flex: 0 1 auto; }.nav-toggle { flex: 0 0 auto; }.hero { padding-bottom: var(--space-2xl); }.hero h1 { font-size: clamp(2.1rem, 10.5vw, 2.65rem); }.hero__visual { min-height: 25rem; }.hero__visual svg { max-height: 24rem; }.hero__visual p { bottom: 0; }.signal--one { width: 20rem; height: 20rem; }.signal--two { width: 27rem; height: 27rem; }
  .section { padding-block: var(--space-2xl); }.section__intro { grid-template-columns: 1fr; }.section__intro > p:last-child { grid-column: auto; }.section__intro h2 { font-size: clamp(2rem, 9vw, 2.8rem); }
  .problem-flow { grid-template-columns: 1fr; }.flow-card { min-height: 15rem; }.flow-arrow { transform: rotate(90deg); justify-self: center; }.statement { padding-left: var(--space-m); }
  .process, .task-grid, .safety-grid { grid-template-columns: 1fr; }.process li { min-height: 8.5rem; }.task-grid li, .task-grid li:nth-child(3n) { min-height: 7.5rem; border-right: 0; }.safety-grid li { min-height: 9rem; }
  .teleop__diagram { grid-template-columns: 1fr; }.teleop__diagram span, .teleop__diagram span:last-child { grid-column: auto; min-height: 5.5rem; }.teleop__diagram b { width: auto; height: 2rem; transform: rotate(90deg); }.maturity { align-items: flex-start; flex-direction: column; }.maturity div { align-items: flex-start; flex-direction: column; }.maturity div span { transform: rotate(90deg); margin-left: .3rem; }
  .uk-list { grid-template-columns: 1fr; }.programme { grid-template-columns: 1fr; }.programme__number { font-size: 10rem; }.paper { min-height: 38rem; }.paper h2 { font-size: clamp(3.2rem, 17vw, 5rem); }.paper__meta { flex-direction: column; gap: .25rem; }.paper::after { right: -10rem; bottom: -9rem; }
  .site-footer { grid-template-columns: 1fr; align-items: start; }.site-footer > p:last-child { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media (forced-colors: active) { .button { forced-color-adjust: none; }.paper, .tasks, .section--navy { border-block: 2px solid CanvasText; } }
@media print { .site-header, .hero__scroll, .nav-toggle { display: none; }.hero { padding-top: var(--space-xl); }.section, .paper { break-inside: avoid; } }