/* Kettenreaktion, Fahrradladen. Die Seite ist ein Zeichnungsblatt auf Millimeterpapier: das Stadtrad als technische
   Zeichnung, beim Scrollen zur Explosionszeichnung zerlegt. Jede Positionsnummer gehört zu einer Leistung der
   Werkstatt mit Festpreis; gewählte Teile färben sich in Signalgrün, unten sammelt eine Leiste den Auftrag.
   Weitere Blätter: Datenblatt mit Maßen, Prüfprotokoll, Schriftfeld mit Kontakt. */
:root {
  --paper: #F2F6F0; --ink: #0F2418; --mut: #4B6355; --green: #0E6B4F; --lime: #C6F432; --lime-s: #E3F8A0; --frame: #0E6B4F; --line: rgba(15, 36, 24, .24);
  --sans: "Bahnschrift", "Avenir Next", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;
  --hh: 3.5rem; --gut: clamp(1rem, 4.5vw, 3rem); --max: 1240px; --bg: var(--paper);
}
html { scroll-padding-top: calc(var(--hh) + .6rem); }
body {
  background-color: var(--paper); color: var(--ink); font-family: var(--sans); font-size: 1.0625rem;
  background-image: linear-gradient(rgba(14, 107, 79, .14) 1px, transparent 1px), linear-gradient(90deg, rgba(14, 107, 79, .14) 1px, transparent 1px),
    linear-gradient(rgba(14, 107, 79, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(14, 107, 79, .06) 1px, transparent 1px);
  background-size: 60px 60px, 60px 60px, 12px 12px, 12px 12px;
}
html.dlg-open { overflow: hidden; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.eyebrow { font: 700 .78rem/1.2 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--green); }
.lead { font-size: clamp(1rem, 1.25vw, 1.2rem); line-height: 1.5; color: var(--mut); }

/* ---------- Kopfleiste ---------- */
.top { position: sticky; top: 0; z-index: 100; display: flex; align-items: center; gap: 1rem; height: var(--hh); padding: 0 var(--gut); background: rgba(242, 246, 240, .97); border-bottom: 1.5px solid var(--ink); }
.logo { display: flex; align-items: center; gap: .6rem; font: 800 1.2rem/1 var(--sans); letter-spacing: -.02em; text-decoration: none; color: var(--ink); }
.logo svg { width: 2.1rem; height: 1.15rem; flex: none; }
.menu { display: flex; gap: 1.6rem; margin-left: auto; font: 600 .82rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.menu a { display: inline-flex; align-items: center; min-height: 2.75rem; text-decoration: none; border-bottom: 2px solid transparent; }
.menu a:hover { border-color: var(--green); }
.mbtn { display: none; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 2.9rem; padding: 0 1.25rem; border: 2px solid var(--ink); background: var(--lime); color: var(--ink);
  font: 700 .98rem/1 var(--sans); text-decoration: none; cursor: pointer; box-shadow: 3px 3px 0 var(--ink); transition: transform .15s, box-shadow .15s, background-color .15s;
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn--ghost { background: var(--paper); }
.btn--sm { min-height: 2.5rem; padding: 0 1rem; font-size: .9rem; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }

/* ---------- Blatt 1: pinned Bühne ---------- */
.pin { position: relative; height: calc(100svh - var(--hh) + 280svh); }
.anchor { position: absolute; top: 0; left: 0; width: 1px; height: 1px; }
.stage { position: sticky; top: var(--hh); height: calc(100svh - var(--hh)); overflow: hidden; isolation: isolate; }
.stage::before { content: ""; position: absolute; inset: 10px; z-index: 7; border: 1.5px solid var(--ink); pointer-events: none; }
.stage::after { content: ""; position: absolute; inset: 14px; z-index: 7; border: 1px solid var(--line); pointer-events: none; }
.zt, .zl { position: absolute; z-index: 8; display: flex; justify-content: space-around; font: 600 8px/10px var(--mono); color: var(--mut); pointer-events: none; }
.zt { left: 14px; right: 14px; top: 0; }
.zl { top: 14px; bottom: 14px; left: 0; width: 10px; flex-direction: column; text-align: center; }
.draw { position: absolute; inset: 0; z-index: 1; width: 100%; height: 100%; display: block; overflow: visible; }
.draw, .ds svg { --fill: var(--paper); }
[data-pos] { --fill: var(--paper); }
[data-pos="1"] { --fill: var(--frame); }
.frm { --fill: var(--frame); }
[data-pos].hov { --fill: var(--lime-s); }
[data-pos].sel { --fill: var(--lime); }
.pt .art { transition: opacity .3s; }

.copy { position: absolute; z-index: 3; left: calc(var(--gut) + 16px); top: 50%; width: min(28rem, 32vw); transform: translateY(-50%); pointer-events: none; }
.copy > * { pointer-events: auto; }
.copy h1 { margin-top: .9rem; font: 800 clamp(2.5rem, 5.2vw, 4.9rem)/.95 var(--sans); letter-spacing: -.035em; }
.copy .lead { margin-top: 1.2rem; max-width: 26rem; }
.btns { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }

/* Schriftfeld unten links */
.tb1 { position: absolute; z-index: 5; left: 24px; bottom: 24px; display: flex; border: 1.5px solid var(--ink); background: var(--paper); font: 600 .66rem/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.tb1 > div { padding: .4rem .75rem; border-right: 1px solid var(--ink); }
.tb1 > div:last-child { border-right: 0; padding: 0; }
.tb1 small { display: block; color: var(--mut); font-size: .56rem; }
.tb1 .v2, .tog .v2 { display: none; }
.stage.ex .tb1 .v1, .stage.ex .tog .v1 { display: none; }
.stage.ex .tb1 .v2, .stage.ex .tog .v2 { display: inline; }
.tog { all: unset; box-sizing: border-box; display: flex; align-items: center; height: 100%; padding: 0 .9rem; cursor: pointer; background: var(--lime); font: 700 .7rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.tog:hover { background: var(--lime-s); }
.tog:focus-visible { outline: 3px solid var(--ink); outline-offset: -3px; }

/* Balloons, Hilfslinien */
.gd { stroke: var(--green); stroke-width: 1.4px; stroke-dasharray: 14 4 3 4; fill: none; opacity: 0; transition: opacity .45s; vector-effect: non-scaling-stroke; }
.stage.lab .gd { opacity: .9; }
.bal { --fill: var(--paper); opacity: 0; transition: opacity .4s; pointer-events: none; }
.stage.lab .bal { opacity: 1; pointer-events: auto; cursor: pointer; }
.bal .ld { fill: none; stroke: var(--green); stroke-width: 1.6px; vector-effect: non-scaling-stroke; }
.bal .tdot { fill: var(--green); }
.bal-s { transform: scale(var(--bs, 1)); }
.bal-s circle { fill: var(--fill); stroke: var(--ink); stroke-width: 1.9px; }
.bal-s text { font: 700 14px/1 var(--mono); fill: var(--ink); text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.bal-s .bn { display: none; font: 700 13px/1 var(--sans); letter-spacing: .01em; paint-order: stroke; stroke: var(--paper); stroke-width: 4px; stroke-linejoin: round; }
.bal.sel, .bal.hov { --fill: var(--lime); }
.stage.lab .pt { cursor: pointer; }

/* Stückliste: unten als Kacheln (Hochformat), rechts als Spalte (breit) */
.list { position: absolute; z-index: 6; left: 10px; right: 10px; bottom: calc(10px + var(--ob, 0px)); display: flex; flex-direction: column; padding: .55rem .6rem .5rem; background: rgba(242, 246, 240, .97); border: 1.5px solid var(--ink); transform: translateY(112%); transition: transform .6s cubic-bezier(.2, .8, .2, 1), bottom .3s; }
.stage.ex .list { transform: none; }
.list h2 { display: none; }
.parts { display: grid; grid-template-columns: 1fr 1fr; gap: .35rem; }
.parts li { min-width: 0; }
.parts button { all: unset; box-sizing: border-box; display: grid; grid-template-columns: 1.7rem minmax(0, 1fr) auto; gap: .5rem; align-items: center; width: 100%; min-height: 3rem; padding: .25rem .5rem; border: 1.5px solid var(--line); background: var(--paper); cursor: pointer; }
.parts button:hover, .parts button.hov { background: var(--lime-s); border-color: var(--ink); }
.parts button[aria-pressed="true"] { background: var(--lime); border-color: var(--ink); }
.parts button:focus-visible { outline: 3px solid var(--ink); outline-offset: 1px; }
.no { display: grid; place-items: center; width: 1.65rem; height: 1.65rem; border: 1.8px solid var(--ink); border-radius: 50%; background: var(--paper); font: 700 .8rem/1 var(--mono); font-style: normal; }
.tx { min-width: 0; }
.tx b { display: block; font: 700 .86rem/1.15 var(--sans); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tx em { display: block; font: 500 .74rem/1.2 var(--sans); font-style: normal; color: var(--mut); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tx small { display: none; }
.pr { font: 700 .76rem/1 var(--mono); white-space: nowrap; }
.chk { display: none; }
.lsum { display: none; }
.fn { margin-top: .45rem; font: 500 .7rem/1.3 var(--sans); color: var(--mut); }
.plain { display: none; }

/* Auftragsleiste */
.obar { position: fixed; z-index: 90; left: 50%; bottom: 14px; display: flex; align-items: center; gap: 1.2rem; width: min(30rem, calc(100% - 1.5rem)); padding: .55rem .6rem .55rem 1.1rem; background: var(--ink); color: var(--paper); border: 2px solid var(--ink); box-shadow: 4px 4px 0 var(--green); transform: translate(-50%, 160%); transition: transform .45s cubic-bezier(.2, .8, .2, 1); }
.obar.show { transform: translate(-50%, 0); }
.obar p { display: grid; gap: .1rem; margin: 0 auto 0 0; font: 600 .74rem/1.2 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.obar b { font-size: .8rem; }
.obar span { color: var(--lime); font-size: 1.05rem; font-weight: 700; }
.obar .btn { min-height: 2.6rem; box-shadow: none; border-color: var(--lime); }

/* ---------- Blätter 2 bis 4 ---------- */
.sheet:not(.s1) { padding: clamp(1.2rem, 3vw, 2.4rem) var(--gut); }
.frame { position: relative; max-width: var(--max); margin-inline: auto; padding: clamp(1.4rem, 4vw, 3.2rem) clamp(1.2rem, 4vw, 3.4rem) 3.6rem; background: rgba(242, 246, 240, .9); border: 1.5px solid var(--ink); box-shadow: inset 0 0 0 5px var(--paper), inset 0 0 0 6px var(--line); }
.tbl { position: absolute; right: -1.5px; bottom: -1.5px; padding: .45rem .9rem; border: 1.5px solid var(--ink); background: var(--paper); font: 600 .66rem/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.shead h2, .why h2 { margin-top: .7rem; font: 800 clamp(2rem, 4.4vw, 3.8rem)/.98 var(--sans); letter-spacing: -.032em; }
.shead .lead { margin-top: 1rem; max-width: 40rem; }
.ds { display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr); gap: clamp(1.4rem, 3vw, 3rem); align-items: center; margin-top: clamp(1.6rem, 3vw, 2.6rem); }
.ds-draw figcaption { margin-top: .5rem; font: 600 .68rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--mut); }
.ds svg { display: block; width: 100%; height: auto; overflow: visible; }
.dm { fill: none; stroke: var(--green); stroke-width: 1.8px; }
.dm.ext { stroke-dasharray: 10 5 2 5; stroke-width: 1.3px; }
.dar { fill: var(--green); }
.dt { font: 700 22px/1 var(--mono); fill: var(--green); paint-order: stroke; stroke: var(--paper); stroke-width: 6px; }
html.js .rv .dm { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.3s .3s cubic-bezier(.4, 0, .2, 1); }
html.js .rv .dm.ext { stroke-dasharray: 10 5 2 5; stroke-dashoffset: 0; opacity: 0; transition: opacity .6s .2s; }
html.js .rv .dar, html.js .rv .dt { opacity: 0; transition: opacity .6s 1.1s; }
html.js .rv.in .dm { stroke-dashoffset: 0; }
html.js .rv.in .dm.ext { opacity: 1; }
html.js .rv.in .dar, html.js .rv.in .dt { opacity: 1; }
.spec { display: grid; margin: 0; border-top: 1.5px solid var(--ink); }
.spec div { display: grid; grid-template-columns: 6.2rem 1fr; gap: 1rem; padding: .55rem 0; border-bottom: 1px solid var(--line); }
.spec dt { font: 600 .72rem/1.5 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mut); }
.spec dd { margin: 0; font-weight: 600; }
.price { margin-top: 1.1rem; display: flex; align-items: baseline; gap: .6rem; font: 600 1rem/1 var(--mono); text-transform: uppercase; }
.price b { font: 800 clamp(2.4rem, 4vw, 3.4rem)/1 var(--sans); letter-spacing: -.03em; }

/* Zollstock */
.finder { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr); gap: 1rem 2.4rem; align-items: center; margin-top: clamp(2rem, 4vw, 3.2rem); padding-top: clamp(1.4rem, 3vw, 2.2rem); border-top: 1.5px solid var(--ink); }
.fin-t h3 { font: 800 1.4rem/1.1 var(--sans); letter-spacing: -.02em; }
.fin-t p { margin-top: .5rem; color: var(--mut); font-size: .95rem; line-height: 1.5; }
.ruler { position: relative; height: 5.4rem; padding-inline: 14px; background: var(--lime); border: 2px solid var(--ink); border-radius: 3px; box-shadow: 3px 3px 0 var(--ink); }
.ruler::before { content: ""; position: absolute; inset: auto 14px 0 14px; height: 34%; background: repeating-linear-gradient(90deg, var(--ink) 0 1.5px, transparent 1.5px calc(100% / 50)); }
.ruler::after { content: ""; position: absolute; inset: auto 14px 0 14px; height: 62%; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px calc(100% / 5)); }
.ticks { position: absolute; inset: .45rem 14px auto 14px; height: 1.2rem; font: 700 .78rem/1 var(--mono); }
.ticks span { position: absolute; top: 0; translate: -50% 0; }
.ruler input { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; margin: 0; background: none; appearance: none; -webkit-appearance: none; cursor: ew-resize; }
.ruler input::-webkit-slider-runnable-track { height: 100%; background: none; }
.ruler input::-moz-range-track { height: 100%; background: none; }
.ruler input::-webkit-slider-thumb { -webkit-appearance: none; width: 28px; height: 100%; border: 0; background: linear-gradient(90deg, transparent 12.5px, var(--ink) 12.5px 15.5px, transparent 15.5px), radial-gradient(circle at 50% 10px, var(--ink) 0 8px, transparent 8.5px); }
.ruler input::-moz-range-thumb { width: 28px; height: 5.4rem; border: 0; border-radius: 0; background: linear-gradient(90deg, transparent 12.5px, var(--ink) 12.5px 15.5px, transparent 15.5px), radial-gradient(circle at 50% 10px, var(--ink) 0 8px, transparent 8.5px); }
.ruler input:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
.hres { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1.2rem; }
.hres b { font: 800 clamp(2.2rem, 4vw, 3.2rem)/1 var(--sans); letter-spacing: -.03em; }
.hres span { color: var(--mut); }
.more { margin-top: clamp(1.6rem, 3vw, 2.4rem); border-top: 1.5px solid var(--ink); }
.more li { display: grid; grid-template-columns: 11rem 1fr auto; gap: 1rem; align-items: baseline; padding: .85rem 0; border-bottom: 1px solid var(--line); }
.more b { font: 800 1.1rem/1.2 var(--sans); }
.more span { color: var(--mut); }
.more em { font: 700 .8rem/1 var(--mono); font-style: normal; letter-spacing: .06em; text-transform: uppercase; }

/* Blatt 3: Prüfprotokoll */
.why { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(1.6rem, 5vw, 4.5rem); align-items: center; }
.why .lead { margin-top: 1.2rem; max-width: 30rem; }
.proto { padding: 1.4rem 1.5rem 1.2rem; background: var(--paper); border: 1.5px solid var(--ink); box-shadow: 6px 6px 0 var(--ink); }
.proto figcaption { padding-bottom: .8rem; border-bottom: 1.5px solid var(--ink); font: 700 .75rem/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.proto ol { display: grid; }
.proto li { display: grid; grid-template-columns: 2.2rem 1fr; gap: 1rem; align-items: start; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.proto li svg { width: 2.1rem; height: 2.1rem; }
.proto li rect { fill: var(--paper); stroke: var(--ink); stroke-width: 2.4px; }
.proto li path { fill: none; stroke: var(--green); stroke-width: 4px; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 1; stroke-dashoffset: 0; }
html.js .proto li path { stroke-dashoffset: 1; transition: stroke-dashoffset .6s cubic-bezier(.4, 0, .2, 1); }
html.js .proto.in li path { stroke-dashoffset: 0; }
html.js .proto.in li:nth-child(1) path { transition-delay: .5s; }
html.js .proto.in li:nth-child(2) path { transition-delay: 1s; }
html.js .proto.in li:nth-child(3) path { transition-delay: 1.5s; }
.proto b { display: block; font: 800 1.12rem/1.2 var(--sans); }
.proto li span { display: block; margin-top: .25rem; color: var(--mut); font-size: .96rem; line-height: 1.45; }
.sig { padding-top: .9rem; font: 700 .78rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--green); }

/* Blatt 4: Schriftfeld */
.tblk { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 1.5px; margin-top: clamp(1.6rem, 3vw, 2.4rem); border: 2px solid var(--ink); background: var(--ink); }
.tblk .c { grid-column: span 3; display: grid; align-content: start; gap: .35rem; padding: 1rem 1.1rem 1.2rem; background: var(--paper); }
.tblk .c-tel { grid-column: span 2; }
.tblk .c-mail { grid-column: span 4; }
.tblk small { font: 600 .64rem/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--mut); }
.tblk b { font: 800 clamp(1.8rem, 3.4vw, 2.8rem)/1 var(--sans); letter-spacing: -.03em; }
.tblk address, .tblk a:not(.btn) { font-style: normal; font-weight: 700; font-size: clamp(.95rem, 3.8vw, 1.1rem); line-height: 1.4; overflow-wrap: anywhere; }
.tblk .c-big span { color: var(--mut); }
.c-hours ul { display: grid; gap: .2rem; margin-top: .2rem; }
.c-hours li { display: flex; align-items: baseline; gap: .5rem; font-size: .98rem; }
.c-hours li i { flex: 1; border-bottom: 1.5px dotted var(--mut); translate: 0 -.25em; }
.c-hours b { font: 700 .98rem/1.3 var(--sans); letter-spacing: 0; }
.stat { margin-top: .5rem; font: 700 .75rem/1.3 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.stat::before { content: ""; display: inline-block; width: .6rem; height: .6rem; margin-right: .5rem; border-radius: 50%; background: var(--mut); }
.stat.open::before { background: var(--green); box-shadow: 0 0 0 3px var(--lime); }
.c-cta p { color: var(--mut); font-size: .98rem; line-height: 1.5; }
.c-cta .btn { justify-self: start; margin-top: .6rem; }

.ft { padding: 1.4rem var(--gut) 5.5rem; }
.ft .note { max-width: var(--max); margin-inline: auto; font: 500 .78rem/1.5 var(--mono); color: var(--mut); }

/* ---------- Werkstattauftrag (Dialog) ---------- */
.dlg { width: min(34rem, calc(100% - 1.5rem)); max-height: calc(100svh - 1.5rem); padding: 0; border: 2px solid var(--ink); background: var(--paper); color: var(--ink); box-shadow: 8px 8px 0 var(--ink); overflow: auto; }
.dlg::backdrop { background: rgba(15, 36, 24, .6); }
.dlg form { padding: 1.4rem 1.5rem 1.4rem; }
.dlg .kick { font: 700 .72rem/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--green); }
.dlg h2 { margin-top: .5rem; font: 800 1.9rem/1 var(--sans); letter-spacing: -.03em; }
.dlst { margin: 1rem 0 0; border-top: 1.5px dashed var(--ink); }
.dlst li { display: flex; align-items: baseline; gap: .6rem; padding: .45rem 0; border-bottom: 1px dashed var(--line); font-size: .95rem; }
.dlst li i { font: 700 .8rem/1 var(--mono); font-style: normal; }
.dlst li span { flex: 1; }
.dlst li b { font: 700 .85rem/1 var(--mono); }
.dlst .none { color: var(--mut); }
.dsum { display: flex; justify-content: space-between; padding: .6rem 0 .8rem; font: 700 .78rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.dsum b { font-size: 1.1rem; }
.dlg label { display: grid; gap: .3rem; margin-top: .7rem; font: 600 .72rem/1.2 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.dlg input:not([type="checkbox"]), .dlg textarea { width: 100%; padding: .65rem .7rem; border: 2px solid var(--ink); border-radius: 0; background: #fff; color: var(--ink); font: 500 1rem/1.3 var(--sans); letter-spacing: 0; text-transform: none; }
.dlg input:focus-visible, .dlg textarea:focus-visible { outline: 3px solid var(--lime); outline-offset: 0; box-shadow: 0 0 0 5px var(--ink); }
.dlg .chk-l { display: flex; align-items: center; gap: .6rem; font: 600 .9rem/1.3 var(--sans); letter-spacing: 0; text-transform: none; }
.dlg .chk-l input { width: 1.3rem; height: 1.3rem; accent-color: var(--green); }
.dnote { margin-top: .9rem; font: 500 .74rem/1.4 var(--mono); color: var(--mut); }
.d-btns { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .7rem; margin-top: 1.1rem; }
.d-ok p:not(.kick) { margin-top: .8rem; line-height: 1.55; }

/* ---------- Einblenden ---------- */
html.js .rv { opacity: 0; transform: translateY(18px); transition: opacity .7s, transform .7s; }
html.js .rv.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html.js .rv { opacity: 1; transform: none; }
  html.js .rv .dm { stroke-dashoffset: 0; }
  html.js .rv .dar, html.js .rv .dt, html.js .rv .dm.ext { opacity: 1; }
  html.js .proto li path { stroke-dashoffset: 0; }
}
[class$="-o"] { fill: none; stroke: var(--ink); stroke-width: calc(var(--w, 10) * 1px); stroke-linecap: round; stroke-linejoin: round; }
[class$="-i"] { fill: none; stroke: var(--fill); stroke-width: calc(var(--w, 10) * 1px); stroke-linecap: round; stroke-linejoin: round; }
.rim-o { --w: 15; }
.rim-i { --w: 11; }
.tire { fill: none; stroke: #1A2A21; stroke-width: 24px; }
.tire-hi { fill: none; stroke: rgba(255, 255, 255, .22); stroke-width: 1.4px; }
.spk { fill: none; stroke: #52645A; stroke-width: .9px; }
.refl { fill: #E9A92C; stroke: var(--ink); stroke-width: 1.2px; }
.hub, .hub-in { fill: var(--fill); stroke: var(--ink); stroke-width: 2.4px; }
.hub-in { stroke-width: 1.6px; }
.axle, .bolt { fill: var(--ink); stroke: none; }
.thin { fill: none; stroke: var(--ink); stroke-width: 1.7px; stroke-linecap: round; stroke-linejoin: round; }
.cap, .shell, .dropout, .ring, .spr, .spr-in, .lamp, .bell, .sad { fill: var(--fill); stroke: var(--ink); stroke-width: 2.2px; stroke-linejoin: round; }
.spr-in { stroke-width: 1.6px; }
.teeth { fill: none; stroke: var(--ink); stroke-width: 7px; }
.shf-o { fill: var(--fill); stroke: var(--ink); stroke-width: 2.2px; }
.grip { fill: none; stroke: #1B2B22; stroke-width: 17px; stroke-linecap: round; }
.grip-hi { fill: none; stroke: rgba(255, 255, 255, .34); stroke-width: 17px; stroke-dasharray: 1.4 4.6; }
.pad { fill: #1B2B22; stroke: none; }
.pedal { fill: #1B2B22; stroke: var(--ink); stroke-width: 1.4px; }
.ghost { fill: none; stroke: var(--ink); stroke-width: 2px; stroke-dasharray: 7 5; opacity: .75; }
.cab { fill: none; stroke: var(--ink); stroke-width: 1.6px; opacity: .85; }
.gnd { fill: none; stroke: var(--ink); stroke-width: 2px; }
.gnd-h { fill: none; stroke: var(--ink); stroke-width: 1.2px; opacity: .55; }
.chain-o { fill: none; stroke: var(--ink); stroke-width: 6.5px; stroke-dasharray: 7.5 4.5; stroke-linejoin: round; }
.chain-i { fill: none; stroke: var(--paper); stroke-width: 2.4px; stroke-dasharray: 7.5 4.5; stroke-dashoffset: -6; }

/* ---------- Einzeichnen beim Laden ---------- */
html.js .draw.pre .art { opacity: 0; }
html.js .draw.pre :is(.tb-o, .tb-i, .st-o, .st-i, .sp-o, .sp-i, .bar-o, .bar-i, .lev-o, .lev-i, .fk-o, .fk-i, .cr-o, .cr-i, .br-o, .br-i, .rk-o, .rk-i, .fd-o, .fd-i, .tire, .rim-o, .rim-i) { stroke-dasharray: 1; stroke-dashoffset: 1; }
html.js .draw.go .art { animation: artin 1s ease-out backwards; animation-delay: calc(var(--k, 0) * 130ms); }
html.js .draw.go :is(.tb-o, .tb-i, .st-o, .st-i, .sp-o, .sp-i, .bar-o, .bar-i, .lev-o, .lev-i, .fk-o, .fk-i, .cr-o, .cr-i, .br-o, .br-i, .rk-o, .rk-i, .fd-o, .fd-i, .tire, .rim-o, .rim-i) { stroke-dasharray: 1; stroke-dashoffset: 0; animation: ink 1.5s cubic-bezier(.5, 0, .2, 1) backwards; animation-delay: calc(var(--k, 0) * 130ms); }
@keyframes artin { from { opacity: 0; } }
@keyframes ink { from { stroke-dashoffset: 1; } }

/* ---------- breite Ansicht: Liste als rechte Spalte ---------- */
@media (min-aspect-ratio: 61/50) and (min-width: 860px) {
  .list { --lw: clamp(310px, 27vw, 400px); inset: 11px 11px 11px auto; width: var(--lw); padding: 1rem 1.2rem 1rem 1.1rem; border: 0; border-left: 1.5px solid var(--ink); transform: translateX(110%); background: rgba(242, 246, 240, .97); }
  .list h2 { display: block; font: 700 .78rem/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
  .list h2 small { display: block; margin-top: .4rem; font: 500 .84rem/1.4 var(--sans); letter-spacing: 0; text-transform: none; color: var(--mut); }
  .parts { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 0; margin-top: .7rem; }
  .parts li { flex: 1 1 0; min-height: 2.5rem; border-top: 1px solid var(--line); }
  .parts li:last-child { border-bottom: 1px solid var(--line); }
  .parts button { grid-template-columns: 1.8rem minmax(0, 1fr) auto 1.15rem; gap: .7rem; height: 100%; min-height: 0; padding: 0 .5rem; border: 0; background: none; }
  .parts button:hover, .parts button.hov { background: var(--lime-s); }
  .parts button[aria-pressed="true"] { background: var(--lime); }
  .tx b { font-size: .95rem; }
  .tx em { font-size: .8rem; }
  .tx small { display: block; font: 500 .72rem/1.25 var(--sans); color: var(--mut); white-space: normal; }
  .pr { font-size: .8rem; }
  .chk { display: block; position: relative; width: 1.1rem; height: 1.1rem; border: 2px solid var(--ink); background: var(--paper); }
  button[aria-pressed="true"] .chk::after { content: ""; position: absolute; left: 3px; top: -3px; width: 5px; height: 10px; border: solid var(--ink); border-width: 0 2.5px 2.5px 0; transform: rotate(40deg); }
  .lsum { display: flex; align-items: center; gap: 1rem; margin-top: .8rem; }
  .lsum .btn { flex: none; white-space: nowrap; }
  .lsum p { display: grid; gap: .1rem; margin: 0 auto 0 0; min-width: 0; font: 600 .72rem/1.2 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
  .lsum span { font-size: 1rem; font-weight: 700; color: var(--green); }
  .lsum .btn { min-height: 2.6rem; }
  .bal-s .bn { display: block; }
  .on-stage .obar { transform: translate(-50%, 160%); }
}
@media (max-height: 820px) and (min-aspect-ratio: 61/50) and (min-width: 860px) { .tx small { display: none; } }

/* ---------- Hochformat ---------- */
@media not all and (min-aspect-ratio: 61/50), (max-width: 859px) {
  .copy { left: calc(var(--gut) + 4px); right: calc(var(--gut) + 4px); top: 1.7rem; width: auto; transform: none; }
  .copy h1 { font-size: clamp(2.1rem, 9.6vw, 3.6rem); }
  .copy .lead { margin-top: .8rem; font-size: 1rem; }
  .btns { margin-top: 1.1rem; }
  .tb1 { left: 18px; bottom: auto; top: auto; display: none; }
  .zt, .zl { display: none; }
  html.has-order .list { --ob: 4.2rem; }
}
@media (min-width: 560px) and (max-width: 859px), (min-width: 560px) and (not (min-aspect-ratio: 61/50)) {
  .parts { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 859px) {
  .menu { display: none; }
  .mbtn { display: inline-flex; align-items: center; min-height: 2.5rem; margin-left: auto; padding: 0 .9rem; border: 2px solid var(--ink); background: var(--paper); font: 700 .74rem/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; cursor: pointer; }
  .menu.open { display: flex; flex-direction: column; gap: 0; position: absolute; top: 100%; left: 0; right: 0; padding: .4rem var(--gut) .8rem; background: var(--paper); border-bottom: 1.5px solid var(--ink); }
  .menu.open a { min-height: 3rem; border-bottom: 1px solid var(--line); }
  .ds, .why, .finder { grid-template-columns: 1fr; }
  .more li { grid-template-columns: 1fr auto; }
  .more li span { grid-column: 1 / -1; grid-row: 2; }
  .tblk { grid-template-columns: 1fr; }
  .tblk .c, .tblk .c-tel, .tblk .c-mail { grid-column: 1 / -1; }
  .spec div { grid-template-columns: 5.4rem 1fr; }
}
@media (max-width: 640px) {
  .dt { font-size: 46px; stroke-width: 9px; }
  .dt .lg { display: none; }
}
@media (max-width: 559px) {
  .parts { grid-template-columns: 1fr 1fr; }
  .parts button { grid-template-columns: 1.55rem minmax(0, 1fr); min-height: 3.2rem; }
  .pr { display: none; }
  .tx em::after { content: ""; }
  .obar { width: calc(100% - 1rem); gap: .6rem; padding-left: .8rem; }
  .obar .btn { padding: 0 .9rem; }
}

/* ---------- ohne Bewegung: alles fertig, Stückliste unter der Zeichnung ---------- */
html.static .pin { height: auto; }
html.static .stage { position: relative; top: auto; height: auto; overflow: visible; display: grid; gap: 1rem; padding: 1.4rem var(--gut) 2rem; }
html.static .stage::before, html.static .stage::after, html.static .zt, html.static .zl, html.static .tb1 { display: none; }
html.static .copy { position: static; order: -1; width: auto; transform: none; opacity: 1 !important; visibility: visible !important; }
html.static .draw { position: relative; inset: auto; height: min(78svh, 118vw); }
@media (min-aspect-ratio: 61/50) and (min-width: 860px) { html.static .draw { height: min(72svh, 56vw); } }
html.static .list { position: static; transform: none; width: auto; border: 1.5px solid var(--ink); }
html.static .obar { display: none; }

/* ---------- Bewegung der Zeichnung ---------- */
.spin { transform-box: view-box; animation: spin 6s linear infinite; }
.spin.sp1 { animation-duration: 12s; }
.spin.sp1r { animation: spinr 12s linear infinite; }
.spin.sp2 { animation-duration: 4.9s; }
.chain-o { animation: chain .38s linear infinite; }
.chain-i { animation: chain2 .38s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spinr { to { transform: rotate(-360deg); } }
@keyframes chain { from { stroke-dashoffset: 0; } to { stroke-dashoffset: -12; } }
@keyframes chain2 { from { stroke-dashoffset: -6; } to { stroke-dashoffset: -18; } }