:root{
  --acc:#34D19B; --acc2:#2AB585; --acc-dim:rgba(52,209,155,.12); --acc-hover:rgba(52,209,155,.18);
  --bg:#07090F; --bg2:#0D111C; --surf:rgba(255,255,255,.05); --surf2:rgba(255,255,255,.03);
  --t1:rgba(255,255,255,.94); --t2:rgba(255,255,255,.64); --t3:rgba(255,255,255,.40);
  --bdr:rgba(255,255,255,.11); --bdr2:rgba(255,255,255,.06);
  --blue:#5B8DEF; --violet:#B98BF5; --yellow:#FFB800; --orange:#FF8A4C; --red:#FF5A5A;
  --r:18px; --blur:blur(34px) saturate(160%);
  --sans:'Space Grotesk',system-ui,sans-serif; --mono:'JetBrains Mono',ui-monospace,monospace;
  --max:1180px; --pad:clamp(1.25rem,5vw,3rem); --sec:clamp(4rem,9vw,7rem);
}
:root[data-theme="light"]{
  --bg:#EEF1F6; --bg2:#FFFFFF; --surf:rgba(0,0,0,.035); --surf2:rgba(0,0,0,.02);
  --t1:rgba(0,0,0,.88); --t2:rgba(0,0,0,.60); --t3:rgba(0,0,0,.42);
  --bdr:rgba(0,0,0,.12); --bdr2:rgba(0,0,0,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);font-size:15px;background:var(--bg);color:var(--t1);
  -webkit-font-smoothing:antialiased;line-height:1.6;overflow-x:hidden;min-height:100vh}
h1,h2,h3{color:var(--t1);line-height:1.12;font-weight:700;letter-spacing:-.02em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--pad)}
.acc{color:var(--acc)}

/* Orbital background */
.orb-wrap{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.30}
.orb-1{width:700px;height:700px;top:-260px;left:-180px;background:radial-gradient(circle,#1a3a6e 0%,transparent 70%)}
.orb-2{width:520px;height:520px;top:32%;right:-140px;background:radial-gradient(circle,rgba(52,209,155,.28) 0%,transparent 70%)}
.orb-3{width:460px;height:460px;bottom:-140px;left:26%;background:radial-gradient(circle,#1e1560 0%,transparent 70%)}
:root[data-theme="light"] .orb{opacity:.16}
main,header,footer{position:relative;z-index:1}

/* Header */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);
  background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid var(--bdr2)}
.nav .row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:66px}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--acc-dim);border:1px solid rgba(52,209,155,.28);color:var(--acc);
  font-weight:700;font-size:14px;letter-spacing:.04em}
.brand .kick{font-size:9.5px;font-weight:700;letter-spacing:.2em;color:var(--t3);text-transform:uppercase}
.brand .kick b{color:var(--acc)}
.brand .nm{font-size:16px;font-weight:600;letter-spacing:.01em}
.navlinks{display:flex;align-items:center;gap:26px}
.navlinks a{font-size:13.5px;color:var(--t2);font-weight:500;transition:.16s}
.navlinks a:hover{color:var(--t1)}
.nav-cta{display:flex;align-items:center;gap:10px}
.toggle{display:grid;place-items:center;width:38px;height:38px;cursor:pointer;border-radius:11px;
  background:var(--surf);border:1px solid var(--bdr);color:var(--t2);transition:.16s}
.toggle:hover{color:var(--acc);border-color:rgba(52,209,155,.3)}
.burger{display:none;background:none;border:0;color:var(--t1);cursor:pointer;padding:8px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--sans);font-weight:600;font-size:14px;
  padding:13px 24px;border-radius:12px;cursor:pointer;border:0;transition:transform .18s,box-shadow .18s,background .18s;white-space:nowrap}
.btn.pri{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#04120c}
.btn.pri:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(52,209,155,.28)}
.btn.ghost{background:var(--surf);color:var(--t1);border:1px solid var(--bdr)}
.btn.ghost:hover{border-color:rgba(52,209,155,.35);background:var(--acc-dim)}
.btn svg{width:16px;height:16px}

/* Reveal */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* Hero */
.hero{padding:clamp(3.5rem,9vw,6.5rem) 0 clamp(2.5rem,6vw,4rem)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--acc);margin-bottom:1.4rem}
.eyebrow::before{content:"";width:26px;height:1.5px;background:var(--acc)}
.hero h1{font-size:clamp(2.2rem,6vw,4rem);letter-spacing:-.03em;margin-bottom:1.2rem;max-width:16ch}
.hero .lead{font-size:clamp(1.02rem,2vw,1.25rem);color:var(--t2);max-width:56ch;margin-bottom:2rem}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:2.6rem}
.trust{display:flex;gap:26px;flex-wrap:wrap;font-size:12.5px;color:var(--t3);font-family:var(--mono)}
.trust span{display:inline-flex;align-items:center;gap:7px}
.trust svg{width:15px;height:15px;color:var(--acc)}

/* Section head */
.sec{padding:var(--sec) 0}
.sec-head{max-width:60ch;margin-bottom:2.6rem}
.sec-head h2{font-size:clamp(1.7rem,4vw,2.6rem);margin-bottom:.9rem}
.sec-head p{font-size:clamp(1rem,1.8vw,1.12rem);color:var(--t2)}

/* Product grid */
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.pcard{position:relative;display:flex;flex-direction:column;gap:14px;padding:26px;
  background:var(--surf);backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);
  border:1px solid var(--bdr);border-radius:var(--r);transition:transform .2s,border-color .2s,background .2s;overflow:hidden}
.pcard:hover{transform:translateY(-4px);border-color:rgba(52,209,155,.3);background:var(--acc-dim)}
.pcard .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;flex:none;
  background:color-mix(in srgb,var(--hue) 15%,transparent);color:var(--hue);
  border:1px solid color-mix(in srgb,var(--hue) 30%,transparent)}
.pcard .ic svg{width:23px;height:23px}
.pcard h3{font-size:17px;font-weight:600;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.pcard .tag{font-size:9px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--t3);
  padding:3px 8px;border-radius:6px;background:var(--surf2);border:1px solid var(--bdr2)}
.pcard p{font-size:13.5px;line-height:1.55;color:var(--t2)}
.pcard ul{list-style:none;display:flex;flex-direction:column;gap:7px;margin-top:2px}
.pcard li{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--t2)}
.pcard li svg{width:15px;height:15px;color:var(--acc);flex:none;margin-top:3px}

/* Services split */
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}
.panel{padding:34px;border-radius:var(--r);background:var(--surf);border:1px solid var(--bdr);
  backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur)}
.panel .ic{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;
  background:var(--acc-dim);border:1px solid rgba(52,209,155,.28);color:var(--acc);margin-bottom:20px}
.panel .ic svg{width:26px;height:26px}
.panel h3{font-size:20px;margin-bottom:12px}
.panel>p{color:var(--t2);font-size:14.5px;margin-bottom:20px}
.panel ul{list-style:none;display:grid;gap:11px}
.panel li{display:flex;align-items:flex-start;gap:11px;font-size:14px;color:var(--t2)}
.panel li b{color:var(--t1);font-weight:600}
.panel li svg{width:17px;height:17px;color:var(--acc);flex:none;margin-top:3px}

/* Process */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;counter-reset:s}
.step{padding:26px;border-radius:var(--r);background:var(--surf2);border:1px solid var(--bdr2);position:relative}
.step .no{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--acc);letter-spacing:.1em;margin-bottom:14px}
.step h4{font-size:16px;color:var(--t1);margin-bottom:8px;font-weight:600}
.step p{font-size:13px;color:var(--t2)}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px;
  padding:36px;border-radius:var(--r);background:var(--surf);border:1px solid var(--bdr)}
.stat .n{font-size:clamp(2rem,4vw,2.8rem);font-weight:700;color:var(--acc);letter-spacing:-.02em;line-height:1}
.stat .l{font-size:13px;color:var(--t2);margin-top:8px}

/* Final CTA */
.final{text-align:center;padding:clamp(3rem,7vw,5rem);border-radius:24px;
  background:linear-gradient(150deg,rgba(52,209,155,.14),rgba(91,141,239,.10));
  border:1px solid rgba(52,209,155,.22)}
.final h2{font-size:clamp(1.8rem,4vw,2.8rem);margin-bottom:1rem}
.final p{color:var(--t2);max-width:52ch;margin:0 auto 2rem;font-size:1.05rem}
.final .hero-cta{justify-content:center}

/* Footer */
footer{border-top:1px solid var(--bdr2);margin-top:var(--sec);padding:44px 0 30px}
.eco{text-align:center;border-bottom:1px solid var(--bdr2);padding-bottom:26px;margin-bottom:26px}
.eco .lab{font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--acc);font-weight:700;margin-bottom:14px}
.eco nav{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;font-size:14px}
.eco nav a{color:var(--t2)}.eco nav a:hover{color:var(--t1)}
.fbot{display:flex;flex-wrap:wrap;gap:14px 24px;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--t3);font-family:var(--mono)}
.fbot nav{display:flex;gap:18px;flex-wrap:wrap}
.fbot nav a:hover{color:var(--t2)}

@media(max-width:820px){
  .navlinks{display:none}
  .burger{display:block}
  .navlinks.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--bg2);border-bottom:1px solid var(--bdr);padding:8px 0}
  .navlinks.open a{padding:13px var(--pad);width:100%}
}

/* ---- Kontakt / Formular ---- */
.page-head{padding:clamp(3rem,7vw,4.5rem) 0 1rem}
.page-head h1{font-size:clamp(2rem,5vw,3rem);margin-bottom:1rem}
.page-head p{color:var(--t2);max-width:56ch;font-size:1.05rem}
.contact-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:34px;align-items:start;padding-bottom:var(--sec)}
.form-card{padding:32px;border-radius:var(--r);background:var(--surf);border:1px solid var(--bdr);
  backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--t1);margin-bottom:7px}
.field .req{color:var(--acc)}
.field input,.field select,.field textarea{width:100%;font-family:var(--sans);font-size:14.5px;color:var(--t1);
  background:var(--bg2);border:1px solid var(--bdr);border-radius:11px;padding:12px 14px;transition:border-color .16s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--acc);box-shadow:0 0 0 3px var(--acc-dim)}
.field textarea{min-height:130px;resize:vertical}
.field.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field.two>div{margin:0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.consent{display:flex;gap:11px;align-items:flex-start;font-size:12.5px;color:var(--t2);line-height:1.5;margin-bottom:20px}
.consent input{width:18px;height:18px;flex:none;margin-top:2px;accent-color:var(--acc)}
.consent a{color:var(--acc);text-decoration:underline}
.form-msg{display:none;padding:13px 16px;border-radius:11px;font-size:14px;margin-bottom:18px}
.form-msg.ok{display:block;background:var(--acc-dim);border:1px solid rgba(52,209,155,.3);color:var(--t1)}
.form-msg.err{display:block;background:rgba(255,90,90,.12);border:1px solid rgba(255,90,90,.35);color:var(--t1)}
.form-card .btn{width:100%;justify-content:center}
.contact-side .panel{margin-bottom:18px}
.contact-side .ct{display:flex;align-items:center;gap:13px;font-size:14px;color:var(--t2);margin-bottom:14px}
.contact-side .ct:last-child{margin-bottom:0}
.contact-side .ct svg{width:20px;height:20px;color:var(--acc);flex:none}
.contact-side .ct a{color:var(--t1)}
.contact-side .ct a:hover{color:var(--acc)}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr}.field.two{grid-template-columns:1fr}}

/* ---- Legal / Textseiten ---- */
.legal{padding:clamp(2.5rem,6vw,4rem) 0 var(--sec);max-width:800px}
.legal h1{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:1.6rem}
.legal h2{font-size:1.3rem;margin:2rem 0 .8rem}
.legal h3{font-size:1.05rem;margin:1.4rem 0 .5rem}
.legal p,.legal li{color:var(--t2);font-size:15px;margin-bottom:.8rem;line-height:1.7}
.legal ul{padding-left:1.3rem;margin-bottom:1rem}
.legal a{color:var(--acc)}
.legal .back{display:inline-flex;align-items:center;gap:7px;color:var(--acc);font-size:14px;margin-top:2rem}

/* ---- C-Stone Logo (grün, theme-abhängig) ---- */
.brand .logo-img{height:44px;width:auto;display:block}
.brand .logo-light{display:none}
:root[data-theme="light"] .brand .logo-dark{display:none}
:root[data-theme="light"] .brand .logo-light{display:block}