/* Requirements Engineering capability page */
.req-page .header{background:rgba(255,250,240,.88)}
.req-shell{max-width:min(1240px,calc(100vw - 28px));padding-top:34px}
.req-page .mech-breadcrumb{margin-bottom:14px}

.req-hero{
  position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(360px,.9fr);gap:28px;align-items:center;
  padding:clamp(24px,3.5vw,42px);border-radius:36px;border:1px solid rgba(132,94,53,.16);
  background:linear-gradient(120deg,rgba(255,250,240,.96),rgba(248,237,219,.88)),url("../img/mosaic/mosaic-geometric-wall.jpg") center/cover;
  box-shadow:0 24px 60px rgba(79,51,20,.12)
}
.req-hero::after{content:"";position:absolute;right:-90px;top:-110px;width:330px;height:330px;border-radius:50%;background:radial-gradient(circle,transparent 0 24%,rgba(15,127,122,.17) 25% 29%,transparent 30% 44%,rgba(211,154,43,.20) 45% 49%,transparent 50% 64%,rgba(184,95,61,.15) 65% 69%,transparent 70%);pointer-events:none}
.req-hero-copy,.req-source-map{position:relative;z-index:1}
.req-hero h1{margin:10px 0 14px;max-width:13ch;font-family:var(--heading);font-size:clamp(2.45rem,5.4vw,4.8rem);line-height:.96;letter-spacing:-.035em;color:#30261d}
.req-hero .lead{max-width:58ch;margin:0;color:#655747;font-size:1.04rem;line-height:1.58}
.req-hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.req-hero-tags span{padding:6px 10px;border-radius:999px;border:1px solid rgba(132,94,53,.16);background:rgba(255,255,255,.58);color:#59493a;font-size:.74rem;font-weight:790}
.req-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

.req-source-map{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center;padding:18px;border-radius:28px;border:1px solid rgba(16,35,63,.12);background:rgba(255,255,255,.72);box-shadow:0 16px 34px rgba(16,35,63,.08)}
.req-source-stack{display:grid;gap:8px}
.req-source-item,.req-baseline-card{padding:11px 12px;border-radius:16px;border:1px solid rgba(132,94,53,.15);background:linear-gradient(180deg,#fffdf8,#fff8ea);box-shadow:0 6px 14px rgba(79,51,20,.05)}
.req-source-item b,.req-baseline-card b{display:block;color:#30261d;font-family:var(--heading);font-size:.92rem}
.req-source-item span,.req-baseline-card span{display:block;margin-top:3px;color:#776856;font-size:.76rem;line-height:1.34}
.req-map-arrow{font-size:2rem;color:var(--accent);font-weight:900}
.req-baseline-card{border-color:rgba(15,127,122,.32);background:linear-gradient(145deg,rgba(225,247,241,.90),rgba(255,248,234,.94))}
.req-baseline-card strong{display:block;margin-top:8px;color:#0b6864;font-family:var(--heading);font-size:1.18rem;line-height:1.1}

.req-section{margin-top:24px;padding:clamp(22px,3vw,32px);border-radius:30px;border:1px solid rgba(132,94,53,.14);background:rgba(255,250,240,.76);box-shadow:0 12px 34px rgba(79,51,20,.07)}
.req-section-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:18px}
.req-section-head>div{max-width:800px}
.req-section h2{margin:6px 0 6px;font-family:var(--heading);font-size:clamp(1.75rem,3vw,2.65rem);line-height:1.05;color:#30261d}
.req-section .req-lead{margin:0;max-width:76ch;color:#6a5a49;font-size:.96rem;line-height:1.55}

.req-flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px;margin-top:18px}
.req-flow button{position:relative;min-height:112px;padding:14px 13px;text-align:left;border-radius:18px;border:1px solid rgba(132,94,53,.17);background:rgba(255,255,255,.72);color:#30261d;cursor:pointer;transition:.18s ease;box-shadow:0 8px 18px rgba(79,51,20,.045)}
.req-flow button:hover,.req-flow button.is-active{transform:translateY(-2px);border-color:rgba(15,127,122,.44);background:linear-gradient(160deg,rgba(227,247,241,.92),rgba(255,255,255,.86));box-shadow:0 13px 28px rgba(15,127,122,.10)}
.req-flow button:not(:last-child)::after{content:"→";position:absolute;right:-9px;top:50%;z-index:2;transform:translate(50%,-50%);width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:#fff8ea;border:1px solid rgba(132,94,53,.18);color:#0f7f7a;font-weight:900}
.req-flow-n{display:block;color:#0f7f7a;font-size:.68rem;font-weight:900;letter-spacing:.10em;text-transform:uppercase}
.req-flow strong{display:block;margin-top:7px;font-family:var(--heading);font-size:1.02rem;line-height:1.12}
.req-flow small{display:block;margin-top:6px;color:#756653;line-height:1.3}
.req-flow-detail{margin-top:12px;padding:14px 16px;border-left:4px solid var(--accent);border-radius:0 16px 16px 0;background:rgba(255,255,255,.62);color:#554738;font-size:.91rem;line-height:1.5}
.req-flow-detail b{color:#30261d}

.req-drawing-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);gap:20px;align-items:stretch}
.req-drawing-card{margin:0;padding:16px;border-radius:24px;border:1px solid rgba(132,94,53,.16);background:#fffdf8;box-shadow:0 14px 30px rgba(79,51,20,.07)}
.req-drawing-card img{display:block;width:100%;height:auto;border-radius:14px;background:#fff}
.req-drawing-card figcaption{margin-top:10px;color:#756653;font-size:.78rem;line-height:1.4}
.req-fact-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:10px}
.req-fact-strip div{padding:9px 8px;border-radius:12px;background:#f8eddb;border:1px solid rgba(132,94,53,.11);text-align:center}
.req-fact-strip b{display:block;color:#30261d;font-size:.93rem}
.req-fact-strip span{display:block;color:#7a6a57;font-size:.66rem;text-transform:uppercase;letter-spacing:.06em}
.req-drawing-copy{display:grid;gap:10px}
.req-insight{padding:14px 15px;border-radius:18px;border:1px solid rgba(132,94,53,.14);background:rgba(255,255,255,.64)}
.req-insight h3{margin:0 0 7px;color:#30261d;font-family:var(--heading);font-size:1.04rem}
.req-insight p,.req-insight ul{margin:0;color:#685847;font-size:.88rem;line-height:1.48}
.req-insight ul{padding-left:18px}
.req-insight li{margin:4px 0}
.req-insight--accent{border-color:rgba(15,127,122,.28);background:linear-gradient(145deg,rgba(228,247,241,.78),rgba(255,255,255,.72))}
.req-code{display:block;margin-top:9px;padding:11px 12px;border-radius:13px;background:#173c38;color:#f4fbf8;font:500 .78rem/1.45 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:normal}

.req-trace-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.req-trace-tabs button{padding:8px 12px;border-radius:999px;border:1px solid rgba(132,94,53,.18);background:#fff8ea;color:#5c4b3b;font-weight:780;cursor:pointer}
.req-trace-tabs button.is-active{color:#fff;border-color:transparent;background:linear-gradient(135deg,#0f7f7a,#b85f3d)}
.req-trace{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.req-trace-node{position:relative;min-height:138px;padding:13px;border-radius:18px;border:1px solid rgba(132,94,53,.14);background:linear-gradient(180deg,rgba(255,255,255,.76),rgba(255,248,234,.94))}
.req-trace-node:not(:last-child)::after{content:"→";position:absolute;right:-9px;top:50%;z-index:2;transform:translate(50%,-50%);color:#0f7f7a;font-size:1.2rem;font-weight:900}
.req-trace-node em{display:block;color:#0f7f7a;font-style:normal;font-size:.66rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.req-trace-node b{display:block;margin-top:6px;color:#30261d;font-family:var(--heading);font-size:.93rem;line-height:1.14}
.req-trace-node span{display:block;margin-top:6px;color:#6f604e;font-size:.77rem;line-height:1.35}
.req-trace-id{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace!important;color:#9b5b2e!important;font-size:.69rem!important}

.req-quality-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.req-quality-card{overflow:hidden;border:1px solid rgba(132,94,53,.15);border-radius:20px;background:rgba(255,255,255,.70)}
.req-quality-label{padding:8px 12px;background:#f3e3ca;color:#81543b;font-size:.68rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.req-quality-bad,.req-quality-good{padding:13px 14px;color:#5e4e3e;font-size:.85rem;line-height:1.42}
.req-quality-bad{border-bottom:1px solid rgba(132,94,53,.12)}
.req-quality-bad b,.req-quality-good b{display:block;margin-bottom:4px;font-family:var(--heading);color:#30261d}
.req-quality-good{background:linear-gradient(145deg,rgba(228,247,241,.70),rgba(255,255,255,.70))}

.req-cap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.req-cap{padding:15px;border-radius:18px;border:1px solid rgba(132,94,53,.14);background:rgba(255,255,255,.66)}
.req-cap span{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,#0f7f7a,#d39a2b);color:#fff;font-size:.70rem;font-weight:900;letter-spacing:.04em}
.req-cap h3{margin:10px 0 5px;color:#30261d;font-family:var(--heading);font-size:1rem}
.req-cap p{margin:0;color:#6a5a49;font-size:.84rem;line-height:1.45}

.req-standards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px}
.req-standard{padding:13px;border-radius:17px;border:1px solid rgba(132,94,53,.14);background:rgba(255,255,255,.64)}
.req-standard b{display:block;color:#30261d;font-family:var(--heading);font-size:.91rem}
.req-standard span{display:block;margin-top:5px;color:#6e5e4d;font-size:.75rem;line-height:1.36}
.req-standard a{display:inline-block;margin-top:7px;font-size:.72rem;font-weight:780}

.req-engage-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.req-engage-card{padding:17px;border-radius:20px;border:1px solid rgba(132,94,53,.16);background:linear-gradient(180deg,rgba(255,255,255,.72),rgba(255,248,234,.90))}
.req-engage-card .req-duration{color:#0f7f7a;font-size:.68rem;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.req-engage-card h3{margin:6px 0;color:#30261d;font-family:var(--heading);font-size:1.12rem}
.req-engage-card p{margin:0;color:#6a5a49;font-size:.84rem;line-height:1.45}
.req-deliverables{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.req-deliverables span{padding:6px 9px;border-radius:999px;border:1px solid rgba(132,94,53,.14);background:#fff8ea;color:#665543;font-size:.72rem;font-weight:740}

.req-cta{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-top:24px;padding:25px 28px;border-radius:30px;border:1px solid rgba(15,127,122,.20);background:linear-gradient(135deg,rgba(228,247,241,.90),rgba(248,237,219,.88));box-shadow:0 16px 36px rgba(79,51,20,.08)}
.req-cta h2{margin:4px 0 5px;color:#30261d;font-family:var(--heading);font-size:clamp(1.55rem,2.5vw,2.25rem)}
.req-cta p{margin:0;max-width:70ch;color:#655646}

@media (max-width:980px){
  .req-hero,.req-drawing-grid{grid-template-columns:1fr}
  .req-source-map{max-width:720px}
  .req-flow,.req-trace{grid-template-columns:1fr}
  .req-flow button:not(:last-child)::after,.req-trace-node:not(:last-child)::after{content:"↓";right:50%;top:auto;bottom:-10px;transform:translate(50%,50%)}
  .req-quality-grid,.req-cap-grid,.req-engage-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .req-standards{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:680px){
  .req-shell{max-width:100%;padding:20px 14px}
  .req-hero,.req-section,.req-cta{border-radius:24px;padding:20px}
  .req-source-map{grid-template-columns:1fr;gap:8px}
  .req-map-arrow{transform:rotate(90deg);justify-self:center}
  .req-fact-strip{grid-template-columns:repeat(2,1fr)}
  .req-quality-grid,.req-cap-grid,.req-engage-grid,.req-standards{grid-template-columns:1fr}
  .req-section-head,.req-cta{align-items:flex-start;flex-direction:column}
}

/* Worked examples carousel */
.req-worked-carousel{position:relative;margin-top:2px}
.req-worked-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:12px}
.req-worked-counter{display:flex;align-items:baseline;gap:6px;color:#8a735c;font:800 .72rem/1 var(--heading);letter-spacing:.08em}
.req-worked-counter [data-req-current]{color:#0f7f7a;font-size:1rem}
.req-worked-nav{display:flex;gap:8px}
.req-worked-arrow{display:grid;place-items:center;width:42px;height:42px;border:1px solid rgba(132,94,53,.20);border-radius:50%;background:#fff8ea;color:#4d4035;font-size:1.25rem;font-weight:900;cursor:pointer;transition:transform .16s ease,border-color .16s ease,background .16s ease,color .16s ease}
.req-worked-arrow:hover{transform:translateY(-1px);border-color:rgba(15,127,122,.42);background:#f0faf7;color:#0f7f7a}
.req-worked-arrow:focus-visible{outline:3px solid rgba(15,127,122,.22);outline-offset:2px}
.req-worked-viewport{overflow:hidden;border-radius:24px}
.req-worked-track{display:flex;align-items:stretch;transition:transform .34s cubic-bezier(.2,.8,.2,1);will-change:transform}
.req-case-panel{display:grid;grid-template-columns:minmax(300px,.82fr) minmax(0,1.18fr);gap:18px;flex:0 0 100%;min-width:0;padding:14px;border-radius:24px;border:1px solid rgba(132,94,53,.15);background:rgba(255,255,255,.68);box-shadow:0 12px 28px rgba(79,51,20,.055);box-sizing:border-box}
.req-case-media{position:relative;min-height:100%;overflow:hidden;border-radius:18px;background:#f3eadc;border:1px solid rgba(132,94,53,.12)}
.req-case-media>img{display:block;width:100%;height:100%;min-height:315px;object-fit:cover;background:#fff}
.req-case-panel--contain .req-case-media>img{object-fit:contain;padding:16px;background:#f8fbfb}
.req-case-media-note{position:absolute;left:10px;right:10px;bottom:10px;padding:11px 12px;border-radius:14px;background:rgba(30,37,39,.88);backdrop-filter:blur(8px);color:#fff;box-shadow:0 8px 22px rgba(0,0,0,.14)}
.req-case-media-note span{display:block;color:#9edbd3;font-size:.63rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.req-case-media-note b{display:block;margin-top:3px;font-family:var(--heading);font-size:1rem;line-height:1.12}
.req-case-media-note small{display:block;margin-top:4px;color:rgba(255,255,255,.78);font-size:.72rem;line-height:1.35}
.req-case-body{display:flex;flex-direction:column;min-width:0}
.req-case-context{padding:12px 13px;border-radius:16px;background:linear-gradient(145deg,rgba(228,247,241,.74),rgba(255,255,255,.72));border:1px solid rgba(15,127,122,.18)}
.req-case-context span{display:block;color:#0f7f7a;font-size:.64rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.req-case-context p{margin:5px 0 0;color:#55483c;font-size:.84rem;line-height:1.45}
.req-case-reqs{display:grid;gap:8px;margin-top:10px}
.req-case-reqs>div{display:grid;grid-template-columns:112px minmax(0,1fr);grid-template-areas:"id req" "id ver";column-gap:11px;padding:10px 11px;border-radius:15px;border:1px solid rgba(132,94,53,.12);background:#fffaf1}
.req-case-reqs code{grid-area:id;align-self:start;padding:5px 6px;border-radius:8px;background:#173c38;color:#f4fbf8;font:600 .68rem/1.2 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;text-align:center;white-space:nowrap}
.req-case-reqs p{grid-area:req;margin:0;color:#3e352d;font-size:.82rem;line-height:1.38}
.req-case-reqs em{grid-area:ver;display:block;margin-top:4px;color:#7a6653;font-style:normal;font-size:.68rem;line-height:1.3}
.req-case-link{display:inline-flex;align-self:flex-start;margin-top:11px;font-weight:820;font-size:.78rem}
.req-case-artifacts{display:flex;flex-wrap:wrap;gap:6px;margin-top:11px}
.req-case-artifacts span{padding:5px 8px;border-radius:999px;background:#f3e3ca;color:#72523b;font-size:.66rem;font-weight:800}
.req-worked-footer{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:12px;color:#8a735c;font-size:.69rem;font-weight:700}
.req-worked-dots{display:flex;align-items:center;gap:7px}
.req-worked-dot{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:rgba(132,94,53,.25);cursor:pointer;transition:width .18s ease,background .18s ease,border-radius .18s ease}
.req-worked-dot.is-active{width:24px;border-radius:999px;background:#0f7f7a}
.req-worked-dot:focus-visible{outline:3px solid rgba(15,127,122,.22);outline-offset:3px}
@media (prefers-reduced-motion:reduce){.req-worked-track{transition:none}}
@media (max-width:900px){
  .req-case-panel{grid-template-columns:1fr}
  .req-case-media>img{min-height:260px;max-height:420px}
}
@media (max-width:560px){
  .req-worked-toolbar{margin-bottom:10px}
  .req-worked-arrow{width:40px;height:40px}
  .req-case-panel{padding:10px;gap:12px}
  .req-case-reqs>div{grid-template-columns:1fr;grid-template-areas:"id" "req" "ver";gap:6px}
  .req-case-reqs code{justify-self:start}
  .req-worked-footer>span{display:none}
}