/* Steuer-Spar-Voltaik – Webinar. Systemschriften, keine externen Fonts (DSGVO). */
:root{
  --navy:#143C64; --navy-deep:#0B2440; --orange:#F39200; --orange-2:#E8951D;
  --ink:#101A24; --muted:#5F7183; --line:#E1E7EE; --paper:#FFFFFF; --paper-2:#F2F5F8;
  --wrap:1080px; --narrow:680px;
  --gap-section:clamp(72px,10vw,140px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 17px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.narrow{max-width:var(--narrow);margin:0 auto;padding:0 28px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* Typo */
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.035em;line-height:1.04}
h1{font-size:clamp(2.15rem,7.4vw,4.6rem)}
h2{font-size:clamp(1.9rem,4vw,2.9rem);letter-spacing:-.03em;line-height:1.1}
h3{font-size:1.12rem;font-weight:650;letter-spacing:-.015em;line-height:1.3}
.lead{font-size:clamp(1.05rem,1.7vw,1.22rem);line-height:1.6;color:var(--muted);margin:22px 0 0;max-width:50ch}
.eyebrow{margin:0 0 26px;font-size:.74rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--orange)}
.eyebrow-d{color:var(--orange-2)}

/* Buttons */
.btn{display:inline-block;border:0;cursor:pointer;text-decoration:none;font:inherit;font-weight:650;
  border-radius:4px;transition:background .15s ease,color .15s ease,transform .15s ease}
.btn-primary{background:var(--orange);color:#fff;padding:18px 38px;font-size:1.02rem}
.btn-primary:hover{background:var(--orange-2);transform:translateY(-2px)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff;padding:11px 20px;font-size:.88rem;font-weight:600}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-block{display:block;width:100%;text-align:center}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--orange);outline-offset:4px}

/* Kopfzeile */
.nav{position:absolute;top:0;left:0;right:0;z-index:30}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:88px}
.logo{display:inline-flex;align-items:center;color:#fff;font-weight:700;font-size:1rem;
  letter-spacing:-.02em;text-decoration:none}
.logo img{height:32px;width:auto}
.logo span{color:var(--orange)}

/* Hero */
.hero{background:var(--navy);color:#fff;padding:calc(88px + clamp(64px,9vw,120px)) 0 0;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-14%;top:-18%;width:60%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle,rgba(243,146,0,.14),transparent 62%);pointer-events:none}
.hero-inner{position:relative;z-index:1;padding-bottom:clamp(64px,8vw,104px)}
.hero h1{max-width:16ch}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero .lead{color:#B9CBDC;max-width:46ch}
.hero-cta{margin-top:clamp(34px,4vw,48px);display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.hero-note{color:#7E9AB6;font-size:.86rem;margin:0}

/* Terminleiste */
.termbar{border-top:1px solid rgba(255,255,255,.15);position:relative;z-index:1}
.termbar-in{display:flex;align-items:stretch;flex-wrap:wrap}
.termbar-date{padding:26px 0;flex:1 1 260px}
.termbar-label{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:#7E9AB6;margin:0 0 6px}
.termbar-date strong{font-size:1.32rem;font-weight:650;letter-spacing:-.02em}
.cd{display:flex;margin-left:auto}
.cd div{padding:26px 0 26px 34px;text-align:left}
.cd b{display:block;font-size:2rem;font-weight:700;letter-spacing:-.04em;line-height:1}
.cd small{display:block;margin-top:5px;font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:#7E9AB6}
.cd-live b{color:var(--orange)}

/* Sektionen */
.section{padding:var(--gap-section) 0}
.section-soft{background:var(--paper-2)}
.section-head{max-width:34ch}
.section-head p{color:var(--muted);margin:20px 0 0;font-size:1.04rem}

/* Referenten */
.speakers{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4vw,56px);
  margin-top:clamp(38px,4vw,56px)}
.speakers article{max-width:400px}
.speakers picture{display:block}
.speakers img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;border-radius:2px;
  background:var(--paper-2)}
.speaker-ph{width:100%;aspect-ratio:4/5;background:#E6EBF1;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:#A9B8C7;font-size:2.2rem;font-weight:700}
.speaker-tag{margin:22px 0 6px;font-size:.68rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted)}
.speakers h3{font-size:1.45rem;font-weight:700;letter-spacing:-.03em;margin:0 0 4px}
.speakers .role{color:var(--orange-2);font-weight:650;font-size:.93rem;margin:0 0 16px}
.speakers article > p:last-child{color:var(--muted);margin:0;font-size:.98rem}

/* Anmeldung */
.signup{background:var(--navy);color:#fff}
.signup h2{color:#fff;text-align:center}
.signup .intro{color:#B9CBDC;text-align:center;margin:20px auto 0;max-width:44ch;font-size:1.04rem}
.form{background:#fff;color:var(--ink);border-radius:4px;padding:clamp(28px,4vw,44px);
  margin:clamp(38px,4vw,56px) auto 0;max-width:520px}
.field{margin-bottom:20px}
.field label{display:block;font-size:.78rem;font-weight:650;letter-spacing:.06em;text-transform:uppercase;
  color:var(--muted);margin-bottom:9px}
.field input{width:100%;padding:14px 0;border:0;border-bottom:1.5px solid var(--line);font:inherit;font-size:1.02rem;
  background:transparent;border-radius:0}
.field input:focus{outline:none;border-bottom-color:var(--orange)}
.check{display:flex;gap:12px;align-items:flex-start;font-size:.86rem;color:var(--muted);line-height:1.5;margin-bottom:14px}
.check input{margin-top:3px;width:17px;height:17px;flex:0 0 auto;accent-color:var(--orange)}
.check a{color:var(--navy);font-weight:600}
.err{display:none;color:#B4342A;font-size:.82rem;margin-top:6px}
.err.show{display:block}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form button{margin-top:12px}
.form-legal{margin:-2px 0 18px;font-size:.78rem;line-height:1.55;color:#8494A5}
.form-legal a{color:var(--navy);font-weight:600}
.form-note{margin:16px 0 0;text-align:center;font-size:.83rem;color:var(--muted)}
.form-note.error{color:#B4342A}
.form.loading button{opacity:.55;pointer-events:none}
.form-closed{margin:0;color:var(--muted);text-align:center}

/* FAQ */
.faq{margin-top:clamp(38px,4vw,56px);border-top:1px solid var(--line)}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:26px 46px 26px 0;position:relative;
  font-size:1.06rem;font-weight:600;letter-spacing:-.015em}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:6px;top:50%;width:13px;height:1.5px;background:var(--orange)}
summary::before{content:"";position:absolute;right:11.75px;top:50%;width:1.5px;height:13px;margin-top:-5.75px;
  background:var(--orange);transition:opacity .2s ease}
details[open] summary::before{opacity:0}
details p{margin:0 0 26px;color:var(--muted);max-width:62ch}

/* Fuß */
.footer{background:var(--navy-deep);color:#8AA5BE;padding:56px 0;font-size:.87rem}
.footer-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer a{color:#C3D5E5;text-decoration:none;margin-right:22px}
.footer a:hover{color:#fff}

.sticky-cta{display:none;position:fixed;left:16px;right:16px;z-index:50;background:var(--orange);
  bottom:calc(16px + env(safe-area-inset-bottom));
  color:#fff;text-align:center;padding:17px;border-radius:4px;font-weight:650;text-decoration:none;
  box-shadow:0 6px 20px rgba(11,36,64,.28);transition:opacity .2s ease,transform .2s ease}
.sticky-cta.hidden{opacity:0;transform:translateY(14px);pointer-events:none}

/* Statusseiten */
.status-body{display:flex;align-items:center;justify-content:center;min-height:100vh;
  min-height:100svh;background:var(--navy);padding:28px}
.status-card{background:#fff;border-radius:4px;padding:clamp(36px,5vw,56px);max-width:540px;width:100%;text-align:center}
.status-logo{display:block;color:var(--navy);font-weight:700;text-decoration:none;margin-bottom:26px;font-size:1rem}
.status-logo span{color:var(--orange)}
.status-card h1{font-size:clamp(1.7rem,3.4vw,2.2rem);margin-bottom:16px}
.status-card p{color:var(--muted);margin:0}
.status-termin{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;margin:26px 0;
  font-size:.97rem;color:var(--navy);font-weight:600}
.status-card .btn{margin-top:6px}
.status-foot{margin-top:28px;font-size:.82rem;color:var(--muted)}
.status-logo img{height:30px;width:auto;margin:0 auto}

/* Danke-Seite */
.thanks{max-width:560px}
.thanks-mark{width:56px;height:56px;border-radius:50%;background:var(--orange);color:#fff;
  display:flex;align-items:center;justify-content:center;margin:0 auto 24px}
.thanks-mark svg{display:block}
.thanks-hint{font-size:.86rem;color:#8494A5;margin-top:12px}
.thanks-alt{margin-top:30px;padding-top:28px;border-top:1px solid var(--line)}
.thanks-alt-label{font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--orange-2);margin:0 0 10px}
.thanks-alt p{margin:0}
.thanks-alt .btn{margin-top:20px}
.status-foot a{color:var(--muted);margin:0 8px}

@media (max-width:860px){
  .wrap,.narrow{padding:0 22px}
  .nav-inner{height:72px}
  .nav .btn-ghost{display:none}
  .logo img{height:28px}

  .hero{padding-top:calc(72px + 48px)}
  .hero-inner{padding-bottom:38px}
  .hero-cta{gap:16px}
  .hero-cta .btn-primary{width:100%;text-align:center}

  .termbar-date{padding:22px 0 18px;flex:1 1 100%}
  .cd{margin-left:0;border-top:1px solid rgba(255,255,255,.15);width:100%;
      display:grid;grid-template-columns:repeat(4,1fr);gap:0}
  .cd div{padding:18px 0;text-align:center}
  .cd b{font-size:1.6rem}
  .cd small{font-size:.58rem;letter-spacing:.08em}

  .speakers{grid-template-columns:1fr;gap:32px}
  .speakers article{max-width:none;display:grid;grid-template-columns:120px 1fr;
    gap:20px;align-items:start}
  .speakers picture,.speakers .speaker-ph{grid-row:span 4;align-self:start}
  .speaker-tag{margin:0 0 4px}
  .speakers h3{font-size:1.18rem}
  .speakers .role{margin:0 0 10px}
  .speakers article > p:last-child{font-size:.92rem}

  .form{padding:26px 22px}

  .sticky-cta{display:block}
  body{padding-bottom:92px}
  .footer-in{flex-direction:column;gap:10px}
}

@media (max-width:380px){
  .cd b{font-size:1.35rem}
  .cd small{font-size:.54rem}
  .termbar-date strong{font-size:1.15rem}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}