/* ============================================================
   B-TECH Prototyp v3 – "Lab / Research" Dark Theme
   Farben 1:1 aus den offiziellen DENK-Abstufungen (OKlab, PDF)
   Schrift: Gothic A1 (DENKweit-CI), self-hosted Latin-Subset (woff2)
   ============================================================ */
@font-face{font-family:'GothicA1';font-weight:400;font-style:normal;font-display:swap;src:url('fonts/GothicA1-Regular.woff2') format('woff2')}
@font-face{font-family:'GothicA1';font-weight:500;font-style:normal;font-display:swap;src:url('fonts/GothicA1-Medium.woff2') format('woff2')}
@font-face{font-family:'GothicA1';font-weight:600;font-style:normal;font-display:swap;src:url('fonts/GothicA1-SemiBold.woff2') format('woff2')}
@font-face{font-family:'GothicA1';font-weight:700;font-style:normal;font-display:swap;src:url('fonts/GothicA1-Bold.woff2') format('woff2')}
@font-face{font-family:'GothicA1';font-weight:800;font-style:normal;font-display:swap;src:url('fonts/GothicA1-ExtraBold.woff2') format('woff2')}
@font-face{font-family:'GothicA1';font-weight:900;font-style:normal;font-display:swap;src:url('fonts/GothicA1-Black.woff2') format('woff2')}
:root{
  /* Blau */
  --b-000021:#000021;--b-000c4a:#000c4a;--b-002675:#002675;--b-0040a5:#0040a5;
  --b-004dbe:#004dbe;--b-005cd3:#005cd3;--b-007cf6:#007cf6;--b-0b85ff:#0b85ff;
  --b-449eff:#449eff;--b-84c0ff:#84c0ff;--b-bde0ff:#bde0ff;
  /* Grün */
  --g-001f04:#001f04;--g-005a24:#005a24;--g-007b36:#007b36;--g-009d4a:#009d4a;
  --g-00c15f:#00c15f;--g-00e577:#00e577;--g-00ff90:#00ff90;--g-2fff99:#2fff99;
  /* Rot */
  --r-620000:#620000;--r-910000:#910000;--r-c20000:#c20000;--r-ee1700:#ee1700;
  --r-ff3300:#ff3300;--r-ff5939:#ff5939;
  /* Grau */
  --k-161616:#161616;--k-2e2e2e:#2e2e2e;--k-484848:#484848;--k-636363:#636363;
  --k-808080:#808080;--k-9e9e9e:#9e9e9e;--k-bebebe:#bebebe;--k-dedede:#dedede;--k-e6e6e6:#e6e6e6;

  --bg:#090c11;--surface:#0f141c;--surface-2:#141b26;
  --ink:#e6e6e6;--muted:#9e9e9e;--line:rgba(255,255,255,.09);
  --heading:#fff;--text:var(--k-bebebe);--text-strong:var(--k-dedede);
  --hairline:rgba(255,255,255,.22);--hairline-hover:rgba(255,255,255,.42);
  --grid:rgba(255,255,255,.022);--header-bg:rgba(9,12,17,.72);--submenu-bg:rgba(13,18,26,.98);--tint:rgba(255,255,255,.02);--veil:9,12,17;
  --blue:var(--b-0b85ff);--green:var(--g-00ff90);--red:var(--r-ff3300);
  --wrap:1200px;--radius:2px;
  --font:'GothicA1','Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  --mono:'Cascadia Code',ui-monospace,'SF Mono',Consolas,'Liberation Mono',monospace;
}
/* Hell-Theme (angelehnt an DENKweit: weiß, dunkle Schrift, DENK-Blau) */
:root[data-theme="light"]{
  --bg:#ffffff;--surface:#ffffff;--surface-2:#f2f6fb;
  --ink:#16202c;--heading:#0a1626;--text:#33414f;--text-strong:#1a2530;--muted:#5c6a78;--line:rgba(10,22,38,.14);
  --hairline:rgba(10,22,38,.3);--hairline-hover:rgba(11,133,255,.7);
  --grid:rgba(10,22,38,.05);--header-bg:rgba(255,255,255,.82);--submenu-bg:rgba(255,255,255,.98);--tint:rgba(10,22,38,.03);--veil:238,243,249;
}
/* CTA-Band bleibt immer dunkel (blaue Bühne) */
.cta-band{
  --ink:var(--k-e6e6e6);--heading:#fff;--text:var(--k-bebebe);--text-strong:var(--k-dedede);--muted:#9e9e9e;
  --line:rgba(255,255,255,.1);--hairline:rgba(255,255,255,.22);--hairline-hover:rgba(255,255,255,.42);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);color:var(--ink);line-height:1.62;background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:44px 44px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 26px}

/* ---------- Typo ---------- */
h1{font-size:clamp(2.4rem,6vw,4.6rem);line-height:1.02;font-weight:800;letter-spacing:-.03em}
h2{font-size:clamp(1.7rem,3.4vw,2.7rem);font-weight:800;letter-spacing:-.02em;line-height:1.1}
h3{font-size:1.22rem;font-weight:700;letter-spacing:-.01em;margin-bottom:.4em}
p{color:var(--text)}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--mono);font-size:.8rem;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.section-num{font-family:var(--mono);color:var(--blue);font-size:.85rem;letter-spacing:.1em}
.lead{font-size:clamp(1.05rem,1.6vw,1.28rem);color:var(--text-strong);max-width:52ch}
.section-lead{font-size:1.06rem;color:var(--muted);max-width:68ch}

/* ---------- Buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;gap:.55em;padding:.85em 1.6em;border-radius:2px;
  font-weight:700;font-size:.96rem;transition:transform .14s,box-shadow .14s,background .14s,border-color .14s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--blue);color:#001024;box-shadow:0 10px 30px rgba(11,133,255,.35)}
.btn-primary:hover{background:var(--b-449eff)}
.btn-ghost{border-color:var(--line);color:var(--ink);background:var(--tint)}
.btn-ghost:hover{border-color:var(--blue);color:var(--heading)}
.btn-light{background:#fff;color:#001024}
.btn-lg{padding:1.05em 2.1em;font-size:1.02rem}
.btn .arrow{transition:transform .18s}
.btn:hover .arrow{transform:translateX(4px)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--header-bg);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:2rem;height:68px}
.brand{font-weight:900;font-size:1.35rem;letter-spacing:-.02em;display:flex;align-items:center;gap:.5rem}
.brand-logo{height:27px;width:auto;display:block}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}
.brand-b{color:var(--blue)}.brand-tech{color:var(--heading)}
.nav{display:flex;gap:1.7rem;margin-left:.6rem;align-items:center}
.nav>a,.nav-item>a{font-family:var(--mono);font-weight:500;color:var(--muted);font-size:.9rem;position:relative;padding:.2em 0;display:inline-flex;align-items:center;gap:.35em}
.nav>a::after,.nav-item>a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--green);transition:width .2s}
.nav>a:hover,.nav-item>a:hover{color:var(--heading)}.nav>a:hover::after,.nav-item:hover>a::after{width:100%}
.nav-item>a i{font-style:normal;font-size:.7em;opacity:.7;transition:transform .2s}
.nav-item:hover>a i{transform:rotate(180deg)}
/* Dropdown-Submenü */
.nav-item{position:relative}
.submenu{position:absolute;left:-1rem;top:calc(100% + .7rem);min-width:310px;background:var(--submenu-bg);backdrop-filter:blur(16px);
  border:1px solid var(--line);padding:.5rem;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .18s,transform .18s;
  box-shadow:0 26px 60px rgba(0,0,0,.55);z-index:70}
.submenu::before{content:"";position:absolute;left:0;right:0;top:-.7rem;height:.7rem}
.nav-item:hover .submenu{opacity:1;visibility:visible;transform:none}
.submenu a{display:flex;flex-direction:column;gap:.15rem;padding:.7rem .9rem;position:static}
.submenu a::after{display:none}
.submenu a:hover{background:rgba(11,133,255,.1)}
.sm-name{font-family:var(--font);font-weight:700;color:var(--heading);font-size:.96rem}
.sm-desc{font-size:.8rem;color:var(--muted);line-height:1.4}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:.9rem}
.lang-switch{font-family:var(--mono);font-weight:600;font-size:.82rem;color:var(--muted);border:1px solid var(--line);border-radius:2px;padding:.35em .7em}
.lang-switch:hover{color:var(--heading);border-color:var(--blue)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-canvas{position:absolute;inset:0;z-index:0}
#field{width:100%;height:100%;display:block}
.hero-canvas::after{content:"";position:absolute;inset:0;background:
  radial-gradient(90% 80% at 20% 40%,transparent 30%,rgba(var(--veil),.72) 100%),
  linear-gradient(90deg,rgba(var(--veil),.9) 0%,rgba(var(--veil),.35) 55%,transparent 100%)}
.hero-inner{position:relative;z-index:1;padding:8rem 0}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:3.2rem;align-items:center}
.hero-copy{max-width:640px}
.hero-media{position:relative}
.video-frame{position:relative;border:1px solid var(--line);border-radius:2px;overflow:hidden;background:#0a0e14;
  box-shadow:0 30px 70px rgba(0,0,0,.5),0 0 0 1px rgba(11,133,255,.15)}
.video-frame video{width:100%;display:block;aspect-ratio:16/10;object-fit:cover}
.video-cap{position:absolute;left:12px;bottom:12px;display:inline-flex;align-items:center;gap:.5em;font-size:.72rem;
  color:var(--k-dedede);background:rgba(9,12,17,.72);border:1px solid var(--line);border-radius:2px;padding:.35em .7em;backdrop-filter:blur(4px)}
.video-cap .dot{width:7px;height:7px;border-radius:50%;background:var(--red);box-shadow:0 0 10px var(--red);animation:pulse 1.6s ease-in-out infinite}
.hero .eyebrow{display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1.4rem;
  border:1px solid var(--line);border-radius:2px;padding:.45em 1em;background:rgba(var(--veil),.5)}
.hero .eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 10px var(--green)}
.hero h1{max-width:16ch;margin-bottom:1.3rem}
.hero .lead{margin-bottom:2.2rem}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:3rem}


/* ---------- Ticker ---------- */
.ticker{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--tint);overflow:hidden;white-space:nowrap}
.ticker-track{display:inline-flex;gap:3rem;padding:.8rem 0;font-family:var(--mono);font-size:.85rem;color:var(--muted);animation:scroll 32s linear infinite}
.ticker-track span{display:inline-flex;align-items:center;gap:3rem}
.ticker b{color:var(--green);font-weight:600}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Sections ---------- */
.section{padding:6.5rem 0;position:relative}
.section-head{display:flex;align-items:baseline;gap:1.4rem;margin-bottom:2.6rem;flex-wrap:wrap}
.section-head .meta{display:flex;flex-direction:column;gap:.5rem}
.divider-num{font-family:var(--mono);font-size:.8rem;color:var(--blue);letter-spacing:.14em;
  border:1px solid var(--line);border-radius:2px;padding:.3em .7em;align-self:flex-start}
.grid{display:grid;gap:1.5rem}
.grid-3{grid-template-columns:repeat(3,1fr)}

/* reveal */
/* Verstecken NUR wenn JS aktiv ist (.js) -> ohne JS bleibt alles sichtbar */
.js [data-reveal]{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js [data-reveal].in{opacity:1;transform:none}
[data-reveal][data-delay="1"]{transition-delay:.08s}
[data-reveal][data-delay="2"]{transition-delay:.16s}
[data-reveal][data-delay="3"]{transition-delay:.24s}

/* ---------- Cards ---------- */
.card{background:var(--surface);border-radius:var(--radius);padding:1.9rem;position:relative;transition:transform .2s,box-shadow .2s}
/* Rahmen = Messrahmen-Eckmarken statt Border */
.card::before,.card::after{content:"";position:absolute;width:15px;height:15px;z-index:2;pointer-events:none;transition:border-color .3s,width .3s,height .3s}
.card::before{left:-1px;top:-1px;border-top:2px solid var(--hairline);border-left:2px solid var(--hairline)}
.card::after{right:-1px;bottom:-1px;border-bottom:2px solid var(--hairline);border-right:2px solid var(--hairline)}
.card:hover{transform:translateY(-4px)}
.card:hover::before,.card:hover::after{border-color:var(--hairline-hover);width:20px;height:20px}

/* Feature = "Message"-Panel: dezent eingelassen + EINE eingerückte Eckmarke (oben rechts) */
.feature{box-shadow:inset 0 0 0 1px var(--line)}
.feature:hover{transform:none}
.feature::after{display:none}
.feature::before{left:auto;right:14px;top:14px;width:12px;height:12px;
  border:0;border-top:2px solid var(--hairline);border-right:2px solid var(--hairline)}
.feature:hover::before{border-color:var(--green);width:18px;height:18px}
.feature .fnum{font-family:var(--mono);color:var(--blue);font-size:.8rem;margin-bottom:1rem;display:block}
.feature h3{color:var(--heading)}

/* products */
.products .product{display:flex;flex-direction:column}
.products .product:hover{box-shadow:0 24px 60px rgba(0,0,0,.5),0 0 0 1px rgba(11,133,255,.25)}
.product-img{position:relative;background:#0a0e14;border-radius:2px;overflow:hidden;aspect-ratio:4/3;margin-bottom:1.3rem;border:1px solid var(--line)}
.product-img img{width:100%;height:100%;object-fit:cover;opacity:.92;transition:transform .5s,opacity .3s;filter:saturate(1.05)}
.products .product:hover .product-img img{transform:scale(1.06);opacity:1}
.product-img .scan{position:absolute;left:0;right:0;top:0;height:34%;
  background:linear-gradient(180deg,rgba(0,255,144,.16),transparent);mix-blend-mode:screen;
  animation:scan 3.6s ease-in-out infinite}
@keyframes scan{0%,100%{transform:translateY(-10%)}50%{transform:translateY(230%)}}
.product .name{display:flex;align-items:baseline;gap:.7rem}
.product h3{color:var(--heading);font-size:1.6rem}
.product .tag{font-family:var(--mono);font-size:.72rem;color:var(--green);border:1px solid rgba(0,255,144,.3);border-radius:2px;padding:.2em .5em}
.tagline{color:var(--blue);font-weight:600;margin:.3em 0 .7em}
.specs{list-style:none;margin-top:1.2rem;border-top:1px solid var(--line);padding-top:1.1rem}
.specs li{position:relative;padding-left:1.4em;font-family:var(--mono);font-size:.82rem;color:var(--k-9e9e9e);margin-bottom:.5em;line-height:1.5}
.specs li::before{content:"›";position:absolute;left:0;color:var(--green)}

/* markets */
.markets .market{padding:0}
.market-img{position:relative;aspect-ratio:16/10;overflow:hidden}
.market-img img{width:100%;height:100%;object-fit:cover;opacity:.8;transition:transform .5s,opacity .4s}
.market:hover .market-img img{transform:scale(1.07);opacity:1}
.market-img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(9,12,17,.85))}
.market .badge{position:absolute;right:1rem;top:1rem;z-index:3;font-family:var(--mono);font-size:.72rem;padding:.25em .6em;background:rgba(9,12,17,.7);border:1px solid var(--line)}
/* farbcodierte Eckmarke je Markt */
/* farbcodierte Eckmarke je Markt (Geometrie kommt von .card) */
.market:nth-child(1)::before{border-color:var(--blue)}
.market:nth-child(2)::before{border-color:var(--green)}
.market:nth-child(3)::before{border-color:var(--red)}
.market:hover:nth-child(1)::before,.market:hover:nth-child(1)::after{border-color:var(--blue)}
.market:hover:nth-child(2)::before,.market:hover:nth-child(2)::after{border-color:var(--green)}
.market:hover:nth-child(3)::before,.market:hover:nth-child(3)::after{border-color:var(--red)}
.market-body{padding:1.6rem;position:relative}
.market h3{color:var(--heading)}

/* publications / project */
.pub-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.2rem;align-items:start}
.project{background:var(--surface-2);border-radius:var(--radius);padding:2.2rem;position:relative}
/* Messrahmen-Ecken statt Gradient-Balken */
.project::before{content:"";position:absolute;left:-1px;top:-1px;width:20px;height:20px;border-top:2px solid var(--blue);border-left:2px solid var(--blue)}
.project::after{content:"";position:absolute;right:-1px;bottom:-1px;width:20px;height:20px;border-bottom:2px solid var(--green);border-right:2px solid var(--green)}
.project .tagrow{font-family:var(--mono);font-size:.75rem;color:var(--muted);margin-bottom:1rem;display:flex;gap:.6rem;flex-wrap:wrap}
.project .tagrow em{color:var(--green);font-style:normal;border:1px solid rgba(0,255,144,.28);border-radius:2px;padding:.15em .5em}
.project h3{color:var(--heading);font-size:1.5rem}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:radial-gradient(120% 160% at 80% 0%,var(--b-004dbe),var(--b-000c4a) 60%,var(--bg))}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:2rem;flex-wrap:wrap;padding:4.5rem 0}
.cta-band h2{color:var(--heading)}.cta-band p{color:var(--b-bde0ff)}

/* ---------- Footer ---------- */
.site-footer{padding:3rem 0;border-top:1px solid var(--line)}
.footer-inner{display:flex;justify-content:space-between;gap:1.2rem;flex-wrap:wrap;align-items:center}
.denkweit-note{color:var(--muted);font-size:.95rem}
.denkweit-note a{color:var(--green);font-weight:700}
.footer-meta{font-family:var(--mono);font-size:.8rem;color:var(--k-636363)}

/* ---------- Linkcards (klickbare Karten) ---------- */
.linkcard{cursor:pointer}
.linkcard .more{display:inline-flex;align-items:center;gap:.4em;margin-top:1.1rem;font-family:var(--mono);font-size:.82rem;color:var(--blue);font-weight:600}
.linkcard:hover .more{color:var(--b-449eff)}
.linkcard .more .arrow{transition:transform .18s}
.linkcard:hover .more .arrow{transform:translateX(4px)}
.products .linkcard{padding-bottom:1.9rem}

/* ---------- Detail-Hero ---------- */
.detail-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(90% 120% at 85% 0%,var(--surface-2),var(--bg) 62%)}
.detail-hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center;padding:6.5rem 0}
.detail-hero--text{padding:1rem 0}
.detail-hero--text .detail-copy{padding:6rem 0 2rem}
.crumb{display:inline-block;font-family:var(--mono);font-size:.82rem;color:var(--muted);margin-bottom:1.4rem}
.crumb:hover{color:var(--green)}
.detail-copy .eyebrow{display:block;color:var(--green);margin-bottom:.8rem}
.detail-copy h1{margin-bottom:1.3rem}
.detail-copy .lead{margin-bottom:2rem}
.detail-visual{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:#0a0e14}
.detail-visual img{width:100%;height:100%;object-fit:cover}

/* ---------- Spec-Bereich (Produkt) ---------- */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.6rem;align-items:start}
.spec-img{margin-top:1.6rem;border-radius:2px;border:1px solid var(--line);width:100%}
.spec-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;position:sticky;top:90px}
.spec-panel-head{background:rgba(11,133,255,.08);border-bottom:1px solid var(--line);padding:.9rem 1.4rem;font-size:.78rem;letter-spacing:.1em;color:var(--blue)}
.specs-lg{margin:0;border:0;padding:1.4rem}
.specs-lg li{font-size:.9rem;margin-bottom:.85em;padding-bottom:.85em;border-bottom:1px dashed var(--line)}
.specs-lg li:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}

/* ---------- Anwendungs-Reihen (Markt) ---------- */
.app-row{display:grid;grid-template-columns:1fr 1fr;gap:2.6rem;align-items:center;margin-bottom:2.4rem;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.app-row.reverse .app-media{order:2}
.app-media{aspect-ratio:4/3;overflow:hidden;background:#0a0e14}
.app-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.app-row:hover .app-media img{transform:scale(1.04)}
.app-body{padding:2rem 2.4rem 2rem 0}
.app-row.reverse .app-body{padding:2rem 0 2rem 2.4rem}
.app-num{color:var(--blue);font-size:.85rem;display:block;margin-bottom:.6rem}
.app-body h3{color:var(--heading);font-size:1.4rem}

/* ---------- Publikationen ---------- */
.project-wide{max-width:none}
.papers{display:flex;flex-direction:column;gap:1rem}
.paper{display:grid;grid-template-columns:90px 1fr;gap:1.4rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;transition:border-color .2s,transform .2s}
.paper:hover{border-color:rgba(11,133,255,.35);transform:translateX(4px)}
.paper-year{font-size:1.4rem;color:var(--blue);font-weight:700;border-right:1px solid var(--line);display:flex;align-items:flex-start}
.paper-body h3{color:var(--heading);font-size:1.12rem;line-height:1.35;margin-bottom:.5rem}
.paper-authors{color:var(--k-bebebe);font-size:.92rem;margin-bottom:.2rem}
.paper-journal{color:var(--muted);font-size:.82rem;margin-bottom:.7rem}
.paper-doi{font-size:.8rem;color:var(--green)}
.paper-doi:hover{text-decoration:underline}

/* ---------- Anwendungsmöglichkeiten (Mess-Raster) ---------- */
.cap-block{margin-top:4.5rem;border-top:1px solid var(--line);padding-top:3rem}
.cap-head{max-width:62ch;margin-bottom:2rem}
.cap-title{color:var(--heading);font-size:1.55rem;margin:.5rem 0 .7rem}
.cap-lead{color:var(--muted)}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.cap-item{display:flex;gap:1rem;padding:1.5rem;background:var(--bg);transition:background .2s}
.cap-item:hover{background:var(--surface)}
.cap-idx{color:var(--blue);font-size:.8rem;padding-top:.15rem;flex:0 0 auto}
.cap-name{display:block;color:var(--heading);font-weight:700;margin-bottom:.25rem}
.cap-desc{display:block;color:var(--muted);font-size:.9rem;line-height:1.5}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .nav{display:none}
  .cap-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .pub-grid,.spec-grid{grid-template-columns:1fr}
  .detail-hero-inner{grid-template-columns:1fr;padding:4.5rem 0}
  .detail-visual{order:-1}
  .app-row,.app-row.reverse{grid-template-columns:1fr}
  .app-row.reverse .app-media{order:0}
  .app-body,.app-row.reverse .app-body{padding:1.6rem}
  .spec-panel{position:static}
  .paper{grid-template-columns:1fr}
  .paper-year{border-right:0;border-bottom:1px solid var(--line);padding-bottom:.6rem}
  .hero-grid{grid-template-columns:1fr;gap:2.4rem}
  .hero-inner{padding:6rem 0}
  .hero-canvas::after{background:linear-gradient(180deg,rgba(9,12,17,.55),rgba(9,12,17,.82))}
}

/* ---------- Theme-Umschalter ---------- */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:34px;height:32px;border:1px solid var(--line);border-radius:2px;background:var(--tint);color:var(--muted);cursor:pointer;transition:color .18s,border-color .18s}
.theme-toggle:hover{color:var(--heading);border-color:var(--blue)}
.theme-toggle .ic{width:16px;height:16px;display:block}
.theme-toggle .ic-moon{display:none}
:root[data-theme="light"] .theme-toggle .ic-sun{display:none}
:root[data-theme="light"] .theme-toggle .ic-moon{display:block}

/* ---------- Scrollspy (aktiver Menüpunkt) ---------- */
.nav>a.active,.nav-item>a.active{color:var(--heading)}
.nav>a.active::after,.nav-item>a.active::after{width:100%}

/* ---------- Footer-Legal ---------- */
.footer-legal{display:flex;gap:1.4rem}
.footer-legal a{font-family:var(--mono);font-size:.85rem;color:var(--muted)}
.footer-legal a:hover{color:var(--green)}

/* ---------- Rechtsseiten (Impressum/Datenschutz) ---------- */
.legal{max-width:820px}
.legal-block{margin-bottom:2.2rem}
.legal-block h2{font-size:1.15rem;color:var(--heading);margin-bottom:.6rem}
.legal-block p{margin-bottom:.7rem;line-height:1.7;color:var(--text)}
.legal-block a{color:var(--blue);text-decoration:underline}