:root{
  --paper:#F1F3F2; --paper-2:#E6EAE9; --ink:#0F1B26; --steel:#4C6174; --line:#C5CED4;
  --signal:#1F4FD8; --signal-ink:#163BA6; --warn:#B3261E;
  --serif:Charter,"Iowan Old Style","Palatino Linotype",Georgia,serif;
  --sans:Bahnschrift,"DIN Alternate","Franklin Gothic Medium","Segoe UI",Roboto,Arial,sans-serif;
  --measure:62ch;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.6 var(--serif);}
a{color:var(--signal-ink);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--signal)}
:focus-visible{outline:3px solid var(--signal);outline-offset:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.6rem 1rem;z-index:10}
.skip:focus{left:0}
header.site{border-bottom:1px solid var(--line)}
.bar{max-width:1120px;margin:0 auto;padding:1rem 24px;display:flex;flex-wrap:wrap;gap:.5rem 2rem;align-items:baseline;justify-content:space-between}
.brand{font:600 1.05rem/1.2 var(--sans);letter-spacing:.01em;color:var(--ink);text-decoration:none}
nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.25rem 1.6rem;font:500 .98rem/1.2 var(--sans)}
nav a{color:var(--steel);text-decoration:none;padding:.35rem 0;border-bottom:2px solid transparent}
nav a:hover,nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--signal)}
main{max-width:1120px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--sans);font-weight:600;line-height:1.1;margin:0;color:var(--ink)}
h1{font-size:clamp(2.4rem,6.2vw,4.6rem);letter-spacing:-.015em;font-weight:700}
h2{font-size:clamp(1.5rem,3vw,2.1rem);letter-spacing:-.005em}
h3{font-size:1.15rem;font-weight:600}
p{margin:0 0 1rem;max-width:var(--measure)}
.lead{font-size:1.28rem;line-height:1.5;max-width:56ch;color:#18293a}
.sub{font:500 clamp(1.05rem,2vw,1.35rem)/1.35 var(--sans);color:var(--steel);max-width:34ch;margin-top:1.1rem}
.meta{font:500 .95rem/1.5 var(--sans);color:var(--steel)}
.hero{padding:4.5rem 0 3rem;display:grid;gap:2.2rem}
section{padding:3.2rem 0;border-top:1px solid var(--line)}
section>h2{margin-bottom:1.4rem}
/* DIDRV timeline */
.timeline{margin:.6rem 0 0}
.timeline figcaption{font:500 .95rem/1.5 var(--sans);color:var(--steel);max-width:70ch;margin-top:.9rem}
.tl{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;min-height:5.2rem}
.tl li{list-style:none;position:relative;padding:.8rem .9rem;background:var(--ink);color:#fff;font:600 1rem/1.15 var(--sans);display:flex;flex-direction:column;justify-content:space-between;transform-origin:left center}
.tl li small{font:500 .78rem/1.3 var(--sans);color:#B7C4CF;display:block;margin-top:.5rem}
.tl li:nth-child(4){background:var(--signal)}
.tl li:nth-child(4) small{color:#DCE5FF}
.tl li:nth-child(5){background:transparent;color:var(--ink);border:1px dashed var(--steel)}
.tl li:nth-child(5) small{color:var(--steel)}
.tl-wrap{padding:0;margin:0}
.axis{display:flex;justify-content:space-between;font:500 .85rem/1 var(--sans);color:var(--steel);margin-top:.5rem}
.axis b{color:var(--warn);font-weight:600}
@media (prefers-reduced-motion:no-preference){
  .tl li{animation:in .7s cubic-bezier(.2,.7,.2,1) both}
  .tl li:nth-child(2){animation-delay:.18s}.tl li:nth-child(3){animation-delay:.36s}
  .tl li:nth-child(4){animation-delay:.54s}.tl li:nth-child(5){animation-delay:.72s}
  @keyframes in{from{opacity:0;transform:scaleX(.2)}to{opacity:1;transform:none}}
}
@media (max-width:640px){.tl{grid-template-columns:1fr}.tl li{flex-direction:row;align-items:baseline;gap:1rem}.tl li small{margin:0}}
/* two-col */
.cols{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:2.5rem 4rem}
@media (max-width:820px){.cols{grid-template-columns:1fr}}
/* Aufbau */
.parts{display:grid;gap:0;border-top:1px solid var(--ink)}
.part{display:grid;grid-template-columns:9rem minmax(0,1fr);gap:.4rem 2rem;padding:1.1rem 0;border-bottom:1px solid var(--line)}
.part h3{font-size:1.05rem}
.part .ch{font:500 .9rem/1.4 var(--sans);color:var(--steel)}
.part p{margin:0;max-width:none}
@media (max-width:640px){.part{grid-template-columns:1fr}}
dl.facts{margin:0;display:grid;grid-template-columns:auto 1fr;gap:.45rem 1.4rem;font:500 1rem/1.45 var(--sans)}
dl.facts dt{color:var(--steel)}dl.facts dd{margin:0}
/* buttons */
.btn{display:inline-block;font:600 1rem/1 var(--sans);padding:.95rem 1.4rem;background:var(--signal);color:#fff;text-decoration:none;border:0;cursor:pointer;border-radius:2px}
.btn:hover{background:var(--signal-ink);color:#fff}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--ink)}
.btn.ghost:hover{background:var(--ink);color:#fff}
.consent{border:1px solid var(--line);background:var(--paper-2);padding:1.4rem;max-width:var(--measure)}
.consent p{font-size:.98rem;margin-bottom:1rem}
.notice{border-left:4px solid var(--signal);background:var(--paper-2);padding:1rem 1.2rem;max-width:var(--measure);margin:0 0 1.5rem}
.notice.warn{border-left-color:var(--warn)}
.todo{background:#FFF3C4;padding:0 .25rem;font-family:var(--sans);font-size:.92em}
ol.steps{padding-left:1.2rem;max-width:var(--measure)}ol.steps li{margin-bottom:.6rem}
footer{border-top:1px solid var(--line);margin-top:3rem;background:var(--paper-2)}
footer .bar{font:500 .92rem/1.4 var(--sans);color:var(--steel)}
footer a{color:var(--steel)}
.prose h2{margin:2.4rem 0 .8rem;font-size:1.4rem}.prose h3{margin:1.6rem 0 .5rem}
.prose h4{margin:1.2rem 0 .4rem;font-size:1rem;font-weight:600;font-family:var(--sans);color:var(--ink)}
.prose ul{max-width:var(--measure)}

/* Hero mit Cover */
.hero-top{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2.5rem 4rem;align-items:center}
.cover{margin:0;justify-self:end}
.cover img{display:block;width:min(360px,100%);height:auto;box-shadow:0 1px 0 rgba(15,27,38,.2),0 18px 40px -12px rgba(15,27,38,.45),0 4px 10px rgba(15,27,38,.18)}
.hero-top .btn{margin-top:.4rem}
.hero-top .btn.ghost{margin-left:.2rem}
@media (max-width:820px){.hero-top{grid-template-columns:1fr}.cover{justify-self:start;order:-1}.cover img{width:min(62vw,300px)}}

/* Reihe */
.eyebrow{font:600 .9rem/1 var(--sans);letter-spacing:.06em;text-transform:uppercase;color:var(--steel);margin:0 0 .8rem}
.series{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2rem 3rem;border-top:1px solid var(--ink);padding-top:1.5rem}
.vol{display:grid;grid-template-columns:7.5rem minmax(0,1fr);gap:1.2rem;align-items:start}
.vol img{display:block;width:100%;height:auto;box-shadow:0 10px 24px -10px rgba(15,27,38,.45)}
.vol .ph{aspect-ratio:3/4;display:flex;align-items:center;justify-content:center;border:1px dashed var(--steel);color:var(--steel);font:600 1.6rem/1 var(--sans)}
.vol .vn{font:600 .85rem/1 var(--sans);letter-spacing:.05em;text-transform:uppercase;color:var(--steel);margin:0 0 .4rem}
.vol h3{margin:0 0 .4rem}.vol h3 a{color:var(--ink);text-decoration:none}.vol h3 a:hover{text-decoration:underline}
.vol p{margin:0 0 .5rem;font-size:.98rem}
.vol .st{font:600 .9rem/1.3 var(--sans);color:var(--signal)}
@media (max-width:820px){.series{grid-template-columns:1fr}}
@media (max-width:420px){.vol{grid-template-columns:5.5rem minmax(0,1fr)}}
header.site nav ul{flex-wrap:wrap}
details{border-top:1px solid #c5ccd8;padding:.2rem 0}details:last-of-type{border-bottom:1px solid #c5ccd8}
summary{font-family:var(--sans);color:var(--ink);cursor:pointer;font-weight:600;padding:.7rem 0;font-size:1.05rem}summary:focus-visible{outline:2px solid #1d4ed8;outline-offset:2px}
details ul{margin:.2rem 0 1rem;padding-left:1.2rem}details li{margin:.55rem 0}
mark{background:#fde68a;padding:0 .15em}