/* Layout: ein technisches Zeichnungsblatt. Links eine mitlaufende Prozessleiste (6 Stationen), rechts die Blätter:
   Chaos→Ordnung (Hero), Datenblatt, Regelkreis, Prozesskette, Bogenkonstruktion, 42,195-km-Strecke, Auftrag. */
:root{
  --paper:#F3F7F7; --sheet:#FFFFFF; --soft:#E1EFEE; --ink:#0D2125; --muted:#566F74; --line:#C9DAD9; --grid:#0B858312;
  --turq:#0B8583; --turq2:#0A5C60; --signal:#D2772A; --signal-soft:#F7E6D6;
  --f-tech:"Bahnschrift","DIN Alternate","DIN 2014","D-DIN","Roboto Condensed","Arial Narrow",system-ui,sans-serif;
  --f-body:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
  --f-mono:ui-monospace,"Cascadia Mono","SFMono-Regular",Consolas,Menlo,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --paper:#091518; --sheet:#0E1F23; --soft:#11302F; --ink:#DCEBEA; --muted:#8CA8AC; --line:#1E3A40; --grid:#34BDB814;
  --turq:#34BDB8; --turq2:#86DAD4; --signal:#F0A052; --signal-soft:#3A2512; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#091518; --sheet:#0E1F23; --soft:#11302F; --ink:#DCEBEA; --muted:#8CA8AC; --line:#1E3A40; --grid:#34BDB814;
  --turq:#34BDB8; --turq2:#86DAD4; --signal:#F0A052; --signal-soft:#3A2512; color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.65;padding-inline:24px;padding-block:0 60px;
  background-color:var(--paper);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px;-webkit-font-smoothing:antialiased}
p{margin:0}
h1,h2,h3{margin:0;font-family:var(--f-tech);font-weight:600;line-height:1.05;letter-spacing:-.005em;text-wrap:balance}
.mono{font-family:var(--f-mono)}
.tag{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.tag b{color:var(--turq);font-weight:500}
a{color:inherit}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
.wrap{max-width:1180px;margin:0 auto}

/* ============ Kopfzeile ============ */
.meta{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:18px;border-bottom:1px solid var(--line)}

/* ============ Hero ============ */
.hero{padding-block:54px 0}
.hero-top{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:40px;align-items:end}
.hero h1{font-size:clamp(52px,9vw,116px);letter-spacing:-.02em;line-height:.92}
.hero h1 span{display:block;color:var(--turq)}
.role{margin-top:22px;display:flex;align-items:center;gap:14px;font-family:var(--f-tech);font-size:clamp(17px,1.8vw,21px);letter-spacing:.02em}
.role i{width:28px;height:1.5px;background:var(--signal)}
.claim{font-size:clamp(19px,2vw,23px);line-height:1.45;max-width:30ch}
.claim em{font-style:normal;color:var(--turq2);border-bottom:1.5px solid var(--signal)}

.flow{margin-top:44px;background:var(--sheet);border:1px solid var(--line);position:relative}
.flow svg{display:block;width:100%;height:auto}
.flow .cols{display:grid;grid-template-columns:36% 28% 36%;border-top:1px solid var(--line)}
.flow .cols div{padding:14px 18px;display:grid;gap:2px;min-width:0}
.flow .cols div+div{border-left:1px solid var(--line)}
.flow .cols b{font-family:var(--f-tech);font-size:17px;font-weight:600}
.flow .cols span{font-size:13.5px;color:var(--muted)}
.corner{position:absolute;width:14px;height:14px;border-color:var(--turq);border-style:solid}
.c1{top:-1px;left:-1px;border-width:2px 0 0 2px}.c2{top:-1px;right:-1px;border-width:2px 2px 0 0}
.c3{bottom:-1px;left:-1px;border-width:0 0 2px 2px}.c4{bottom:-1px;right:-1px;border-width:0 2px 2px 0}

/* Schriftfeld */
.titleblock{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));border:1px solid var(--ink);border-top:0;background:var(--sheet);font-size:13px}
.titleblock div{padding:8px 12px;border-right:1px solid var(--line);display:grid;gap:1px;min-width:0}
.titleblock div:last-child{border-right:0}
.titleblock span{font-family:var(--f-mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.titleblock b{font-family:var(--f-tech);font-weight:600;font-size:15px;line-height:1.25}

/* ============ Layout mit Prozessleiste ============ */
.layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:48px;margin-top:72px}
.rail{position:sticky;top:calc(env(safe-area-inset-top,0px) + 28px);align-self:start}
.rail ol{list-style:none;margin:0;padding:0;position:relative}
.rail ol::before{content:"";position:absolute;left:11px;top:12px;bottom:12px;width:2px;background:var(--line)}
.rail .fill{position:absolute;left:11px;top:21px;z-index:0;width:2px;height:0;background:var(--turq);transition:height .2s linear}
.rail li{position:relative}
.rail a{display:grid;grid-template-columns:24px minmax(0,1fr);gap:12px;align-items:center;padding:9px 0;text-decoration:none;color:var(--muted)}
.rail .n{width:24px;height:24px;border-radius:50%;background:var(--paper);border:2px solid var(--line);display:grid;place-items:center;font-family:var(--f-mono);font-size:10px;position:relative;z-index:1;transition:all .25s}
.rail .l{font-family:var(--f-tech);font-size:15px;line-height:1.2}
.rail .l small{display:block;font-family:var(--f-mono);font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;opacity:.8}
.rail a.done .n{border-color:var(--turq);background:var(--turq);color:var(--sheet)}
.rail a.on .n{border-color:var(--signal);background:var(--sheet);color:var(--signal);box-shadow:0 0 0 4px var(--signal-soft)}
.rail a.on{color:var(--ink)}
.rail-foot{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line)}
.rail-foot b{font-family:var(--f-tech);font-size:26px;color:var(--turq)}

/* ============ Blätter ============ */
.sheets{display:grid;gap:40px;min-width:0}
.sheet{background:var(--sheet);border:1px solid var(--line);position:relative;scroll-margin-top:24px;min-width:0}
.sheet-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 24px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.sheet-body{padding:34px 40px 40px;display:grid;gap:30px}
.sheet-body>*,.layout>*,.hero>*{min-width:0}
.sheet h2{font-size:clamp(32px,4.2vw,50px)}
.lead{font-size:18px;max-width:64ch}
.lead+.lead{margin-top:14px}
.muted{color:var(--muted)}
.sub{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;align-items:center;gap:10px}
.sub::after{content:"";flex:1;height:1px;background:var(--line)}

/* Datenblatt */
.two{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:40px;align-items:start}
.spec{margin:0;display:grid;border-top:2px solid var(--ink)}
.spec div{display:grid;grid-template-columns:110px minmax(0,1fr);gap:14px;padding:11px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.spec dt{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-top:3px}
.spec dd{margin:0;hyphens:auto;overflow-wrap:break-word;font-weight:600;line-height:1.4}
.quote{border-left:3px solid var(--signal);padding:6px 0 6px 22px;font-family:var(--f-tech);font-size:clamp(21px,2.3vw,26px);line-height:1.3;max-width:34ch}

/* Regelkreis */
.diagram{overflow-x:auto;border:1px solid var(--line);background:var(--paper)}
.diagram svg{display:block;width:100%;min-width:640px;height:auto}
.blk rect{fill:var(--sheet);stroke:var(--ink);stroke-width:1.5;transition:fill .2s}
.blk.hl rect{fill:var(--soft);stroke:var(--turq)}
.blk text{font-family:var(--f-tech);fill:var(--ink)}
.blk .k{font-family:var(--f-mono);font-size:10px;letter-spacing:.12em;fill:var(--muted)}
.vm{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.vm article{border:1px solid var(--line);padding:22px 24px;display:grid;gap:10px;align-content:start;transition:border-color .2s,background .2s;cursor:default}
.vm article.hl{border-color:var(--turq);background:var(--soft)}
.vm article p{font-family:var(--f-tech);font-size:clamp(19px,2vw,23px);line-height:1.35}
.vm .who{display:flex;justify-content:space-between;gap:8px}

/* Prozesskette */
.chain{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border:1px solid var(--line)}
.stage{padding:18px 18px 22px;display:grid;gap:8px;align-content:start;position:relative;min-width:0}
.stage+.stage{border-left:1px solid var(--line)}
.stage svg{width:100%;height:64px;display:block}
.stage h3{font-size:clamp(18px,1.7vw,21px);hyphens:auto;overflow-wrap:break-word}
.stage p{font-size:14px;color:var(--muted)}
.stage .no{font-family:var(--f-mono);font-size:11px;color:var(--signal);letter-spacing:.1em}
.stage+.stage::before{content:"";position:absolute;left:-7px;top:44px;width:12px;height:12px;background:var(--sheet);border-top:1.5px solid var(--turq);border-right:1.5px solid var(--turq);transform:rotate(45deg)}
.checks{display:grid;border-top:2px solid var(--ink)}
.checks div{display:grid;grid-template-columns:36px minmax(0,1fr) minmax(0,1.3fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line);align-items:baseline}
.checks .id{font-family:var(--f-mono);font-size:11px;color:var(--muted)}
.checks h3{font-size:20px;font-weight:600}
.checks h3 span{color:var(--muted);font-weight:400}
.checks h3 b{color:var(--turq);font-weight:600}
.checks p{font-size:14.5px;color:var(--muted)}
.modules{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.modules div{border:1px solid var(--line);padding:16px;display:grid;gap:10px;align-content:space-between;min-height:118px;background:linear-gradient(135deg,var(--soft),transparent 60%)}
.modules span{font-family:var(--f-mono);font-size:11px;color:var(--turq)}
.modules b{font-family:var(--f-tech);font-size:17px;font-weight:600;line-height:1.25}

/* KeyOne */
.name{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line)}
.name div{padding:22px 26px;display:grid;gap:4px}
.name div+div{border-left:1px solid var(--line)}
.name b{font-family:var(--f-tech);font-size:clamp(48px,6vw,72px);font-weight:600;line-height:.95;color:var(--turq)}
.name p{color:var(--muted)}
.arch-sec{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center}
.arch-sec svg{width:100%;height:auto;display:block;background:var(--paper);border:1px solid var(--line)}
.cities{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line)}
.cities figure{margin:0;display:grid}
.cities figure+figure{border-left:1px solid var(--line)}
.cities svg{width:100%;height:auto;display:block;background:var(--paper);border-bottom:1px solid var(--line)}
.cities figcaption{padding:14px 18px 18px;font-size:14px;color:var(--muted)}
.cities figcaption b{display:block;font-family:var(--f-tech);font-size:19px;font-weight:600;color:var(--ink)}
.chip{display:grid;grid-template-columns:170px minmax(0,1fr);gap:30px;align-items:center}
.chip .swatch{border:1px solid var(--line);background:var(--sheet);box-shadow:0 10px 24px -14px #0B858380}
.chip .swatch div{aspect-ratio:1/0.82;background:#0B8583;position:relative;overflow:hidden}
.chip .swatch svg{position:absolute;inset:0;width:100%;height:100%}
.chip .swatch p{padding:10px 12px;font-family:var(--f-mono);font-size:10.5px;line-height:1.5;color:var(--muted)}
.chip .swatch p b{font-family:var(--f-tech);font-size:14px;color:var(--ink);letter-spacing:0}

/* Strecke */
.route{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));position:relative}
.route::before{content:"";position:absolute;left:0;right:0;top:35px;height:3px;background:repeating-linear-gradient(90deg,var(--turq) 0 10px,transparent 10px 16px)}
.route li{display:grid;gap:6px;align-content:start;padding-right:10px;position:relative;min-width:0}
.route .km{font-family:var(--f-mono);font-size:11px;color:var(--signal)}
.route .pt{width:20px;height:20px;border-radius:50%;background:var(--sheet);border:3px solid var(--turq);position:relative;z-index:1}
.route li:first-child .pt,.route li:last-child .pt{background:var(--turq)}
.route li:last-child .pt{border-color:var(--signal);background:var(--signal)}
.route b{font-family:var(--f-tech);font-size:15.5px;hyphens:auto;overflow-wrap:break-word;font-weight:600;line-height:1.2;margin-top:6px}
.route span.d{font-size:13px;color:var(--muted);line-height:1.4}
.route svg{width:26px;height:26px;color:var(--turq)}

/* Auftrag */
.order{background:var(--turq2);color:var(--sheet);border:0;position:relative;overflow:hidden}
.order .sheet-head{border-color:color-mix(in srgb,var(--sheet) 25%,transparent)}
.order .tag{color:color-mix(in srgb,var(--sheet) 75%,transparent)}
.order .tag b{color:var(--sheet)}
.order h2{max-width:18ch}
.order .row{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap}
.order .spec2{font-family:var(--f-mono);font-size:13px;line-height:1.9;opacity:.9}
.order a{display:inline-flex;align-items:center;gap:12px;background:var(--sheet);color:var(--turq2);text-decoration:none;font-family:var(--f-tech);font-size:18px;font-weight:600;padding:15px 22px}
.order a:hover{background:var(--paper)}
.order .bg{position:absolute;right:-60px;bottom:-80px;width:340px;opacity:.13;color:var(--sheet);pointer-events:none}

footer{margin-top:40px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}

/* ============ Responsiv ============ */
@media (max-width:980px){
  .layout{grid-template-columns:1fr;gap:20px;margin-top:48px}
  .rail{top:env(safe-area-inset-top,0px);z-index:10;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(6px);margin-inline:-24px;padding:8px 24px;border-bottom:1px solid var(--line)}
  .rail ol{display:flex;gap:18px;overflow-x:auto;scrollbar-width:none}
  .rail ol::before,.rail .fill,.rail-foot{display:none}
  .rail a{grid-template-columns:22px auto;white-space:nowrap;padding:4px 0}
  .rail .l small{display:none}
  .two,.arch-sec{grid-template-columns:1fr}
  .chain{grid-template-columns:1fr 1fr}
  .stage:nth-child(3){border-left:0}
  .stage:nth-child(n+3){border-top:1px solid var(--line)}
  .stage:nth-child(3)::before{display:none}
  .modules{grid-template-columns:1fr 1fr}
  .route{grid-template-columns:1fr;gap:18px;padding-left:34px}
  .route::before{left:9px;right:auto;top:6px;bottom:6px;width:3px;height:auto;background:repeating-linear-gradient(180deg,var(--turq) 0 10px,transparent 10px 16px)}
  .route .pt{position:absolute;left:-34px;top:2px}
  .route li{padding-right:0}
  .route svg{display:none}
  .titleblock{grid-template-columns:repeat(3,minmax(0,1fr))}
  .titleblock div:nth-child(3){border-right:0}
  .titleblock div:nth-child(-n+3){border-bottom:1px solid var(--line)}
}
@media (max-width:640px){
  body{padding-inline:16px}
  .rail{margin-inline:-16px;padding-inline:16px}
  .hero-top{grid-template-columns:1fr;gap:22px}
  .flow .cols{grid-template-columns:1fr}
  .flow .cols div+div{border-left:0;border-top:1px solid var(--line)}
  .titleblock{grid-template-columns:1fr 1fr}
  .titleblock div{border-bottom:1px solid var(--line)}
  .titleblock div:nth-child(2n){border-right:0}
  .sheet-body{padding:24px 20px 28px}
  .sheet-head{padding:10px 20px}
  .vm,.name,.cities,.modules,.chain{grid-template-columns:1fr}
  .name div+div,.cities figure+figure{border-left:0;border-top:1px solid var(--line)}
  .stage+.stage{border-left:0;border-top:1px solid var(--line)}
  .stage+.stage::before{display:none}
  .checks div{grid-template-columns:30px minmax(0,1fr)}
  .checks p{grid-column:2}
  .chip{grid-template-columns:1fr}
  .chip .swatch{max-width:200px}
  .spec div{grid-template-columns:96px minmax(0,1fr)}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}