.fiber-hero{padding:48px 0 40px}.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:46px;align-items:center}
.fiber-hero h1{font-size:clamp(3.2rem,5.8vw,5.9rem);line-height:.9;letter-spacing:-.06em;margin:12px 0 20px}
.lead{font-size:1.17rem;line-height:1.65;color:#d8dde7}.wtf{margin:20px 0;padding:15px 17px;border-left:3px solid var(--cyan);background:rgba(86,215,255,.055);border-radius:0 12px 12px 0;font-weight:850}
.fiber-scene{height:390px;position:relative;display:grid;place-items:center}
.cable{width:90%;height:68px;background:#0c1118;border-radius:40px;border:2px solid #38414d;position:relative;overflow:hidden;box-shadow:0 0 50px rgba(86,215,255,.08)}
.core{position:absolute;left:4%;right:4%;top:50%;height:10px;transform:translateY(-50%);background:#d8f6ff;border-radius:20px;box-shadow:0 0 16px var(--cyan),0 0 40px rgba(86,215,255,.35)}
.pulse{position:absolute;top:50%;left:4%;width:18px;height:18px;border-radius:50%;background:#fff;transform:translateY(-50%);box-shadow:0 0 16px #fff,0 0 32px var(--cyan);opacity:0}
.pulse.go{animation:shoot 1.25s linear forwards}
@keyframes shoot{0%{left:4%;opacity:1}95%{opacity:1}100%{left:92%;opacity:0}}
.label-in,.label-out{position:absolute;top:110px;font-weight:900;color:var(--cyan)}.label-in{left:7%}.label-out{right:7%}
.fact-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin-top:28px}.fact{background:var(--panel);border:1px solid var(--line);border-radius:17px;padding:17px}.fact strong{display:block;color:var(--gold);font-size:1.16rem}.fact small{color:var(--muted)}
.lab-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:24px}
.path{display:grid;gap:11px;margin-top:18px}.step{padding:15px;border:1px solid var(--line);border-radius:14px;background:#151b25}.step.active{outline:2px solid var(--cyan);background:#10232b}
.compare{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.compare>div{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px}
.range{width:100%;accent-color:var(--orange);margin:17px 0}.big{font-size:clamp(2.8rem,6vw,4.8rem);font-weight:950;color:var(--gold);line-height:1}
.quiz-options{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.choice{padding:14px;border:1px solid var(--line);border-radius:12px;background:#202631;color:#fff;font-weight:900;cursor:pointer}.choice.good{outline:2px solid var(--green)}.choice.bad{outline:2px solid #ff6969}.quiz-result{min-height:44px;margin-top:14px;font-weight:850}
.adbox{border:1px solid rgba(255,190,70,.42);border-radius:25px;padding:28px;background:linear-gradient(135deg,rgba(255,138,36,.13),rgba(49,204,255,.08),var(--panel));box-shadow:var(--shadow)}
.adlabel{display:inline-block;font-size:.68rem;letter-spacing:.14em;font-weight:900;border:1px solid #717784;border-radius:99px;padding:5px 9px;color:#b8bec9;margin-bottom:14px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:16px 18px;margin:9px 0}.faq summary{font-weight:900;cursor:pointer}
.sources{color:var(--muted);border-top:1px solid var(--line);padding-top:20px}.sources a{color:#a9e8ff}
.next-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.next-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:19px;text-decoration:none}.next-card strong{display:block;margin:5px 0}.next-card small{color:var(--muted)}
@media(max-width:820px){.hero-grid,.lab-grid,.compare{grid-template-columns:1fr}.fact-strip{grid-template-columns:1fr 1fr}.fiber-hero h1{font-size:clamp(3rem,14vw,5rem)}.quiz-options,.next-cards{grid-template-columns:1fr}.fiber-scene{height:300px}}


/* ===== Lichtimpuls Animation Fix ===== */
.pulse{
  z-index:5 !important;
  width:20px !important;
  height:20px !important;
  opacity:0;
  background:#fff !important;
  box-shadow:
    0 0 10px #fff,
    0 0 24px var(--cyan),
    0 0 42px var(--cyan) !important;
}


/* ===== FTTC / FTTB / FTTH Visualisierung ===== */
.fiber-visual-panel{overflow:hidden}
.fiber-route{
  display:grid;
  grid-template-columns:auto 1fr auto 1fr auto 1fr auto;
  align-items:center;
  gap:8px;
  margin:28px 0 16px;
  min-width:0;
}
.route-node{
  text-align:center;
  min-width:58px;
  position:relative;
  z-index:2;
}
.route-node span{
  display:block;
  font-size:2.25rem;
  line-height:1;
}
.route-node small{
  display:block;
  color:var(--muted);
  margin-top:7px;
  font-size:.74rem;
}
.route-line{
  height:8px;
  border-radius:99px;
  position:relative;
  overflow:hidden;
  background:#6e5536;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.route-line.glass,
.route-line.is-glass{
  background:linear-gradient(90deg,#a8f3ff,var(--cyan));
  box-shadow:0 0 10px rgba(86,215,255,.55);
}
.route-line.is-copper{
  background:linear-gradient(90deg,#8b6339,#c88b45);
  box-shadow:none;
}
.route-line.is-glass::after,
.route-line.glass::after{
  content:"";
  position:absolute;
  top:0;bottom:0;
  width:42px;
  left:-46px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.95),transparent);
  animation:routePulse 1.7s linear infinite;
}
@keyframes routePulse{
  to{left:calc(100% + 46px)}
}
.route-legend{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  color:var(--muted);
  font-size:.8rem;
  margin:4px 0 14px;
}
.route-legend i{
  display:inline-block;
  width:28px;
  height:5px;
  border-radius:99px;
  vertical-align:middle;
  margin-right:6px;
}
.legend-glass{
  background:var(--cyan);
  box-shadow:0 0 8px rgba(86,215,255,.55);
}
.legend-copper{background:#b77a3e}
.route-result{
  padding:13px 14px;
  border-radius:12px;
  background:#101720;
  color:#d9dee8;
  font-weight:800;
  line-height:1.5;
}

@media(max-width:620px){
  .fiber-route{
    grid-template-columns:1fr;
    gap:5px;
  }
  .route-line{
    width:8px;
    height:35px;
    justify-self:center;
  }
  .route-line.is-glass::after,
  .route-line.glass::after{
    width:100%;
    height:20px;
    left:0;
    top:-22px;
    background:linear-gradient(180deg,transparent,rgba(255,255,255,.95),transparent);
    animation:routePulseVertical 1.7s linear infinite;
  }
  @keyframes routePulseVertical{to{top:calc(100% + 22px)}}
}

/* FTTC/FTTB/FTTH: direkte Auswahl statt Browser-Dropdown */
.path .step{
  width:100%;
  text-align:left;
  color:#fff;
  font:inherit;
  cursor:pointer;
  appearance:none;
  -webkit-appearance:none;
  transition:transform .15s ease,border-color .15s ease,background .15s ease;
}
.path .step:hover{transform:translateY(-1px);border-color:#657080}
.path .step.active{outline:2px solid var(--cyan);background:#102c33}
.path .step small{display:block;margin:5px 0 0 27px;color:var(--muted);font-size:.78rem}

.interaction-explain{
  margin:18px 0 0;
  padding:13px 15px;
  border-left:3px solid var(--cyan);
  border-radius:0 10px 10px 0;
  background:rgba(86,215,255,.055);
  color:#d9dee8;
  line-height:1.55;
}