@import url("fonts/fonts.css");
:root{
  color-scheme:light;
  --deep:#0F3B2E; --leaf:#2E9C63; --moss:#1B6B42; --lime:#C4DB4A; --slate:#4A564F; --sand:#F4F0E6;
  --paper:#FFFFFF; --line:#E4DFD2; --line2:#CFC8B6; --deep2:#0B2E24; --deepline:#22513F;
  --ondeep:#EDF3EE; --ondeep2:#A9C4B6; --tint:#EAF4EE;
  --disp:"Outfit",system-ui,Helvetica,Arial,sans-serif; --body:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --wrap:1180px; --r:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--paper);color:var(--deep);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
[id]{scroll-margin-top:84px}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:clamp(18px,3vw,32px)}
p{margin:0}
a{color:var(--moss)}
h1,h2,h3,h4{font-family:var(--disp);margin:0;font-weight:700;letter-spacing:-.018em;line-height:1.06;text-wrap:balance}
h1{font-size:clamp(2.3rem,5.4vw,4.4rem);letter-spacing:-.025em}
h2{font-size:clamp(1.9rem,3.6vw,3rem)}
h3{font-size:1.35rem;font-weight:600;line-height:1.2}
.lede{font-size:clamp(1.05rem,1.4vw,1.2rem);color:var(--slate);max-width:56ch}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--deep);color:#fff;padding:10px 16px;border-radius:8px}
.skip:focus{left:12px}

/* marque */
.marque{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--deep)}
.marque .wm{font-family:var(--disp);font-size:1.28rem;letter-spacing:-.02em;line-height:1}
.marque .wm b{font-weight:700}.marque .wm span{font-weight:400;color:var(--slate)}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:24px;height:70px}
nav{margin-left:auto;display:flex;gap:clamp(14px,2vw,28px);align-items:center}
nav a{font-size:.94rem;color:var(--slate);text-decoration:none;padding-block:6px;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
nav a:hover{color:var(--deep);border-color:var(--leaf)}
nav .btn{padding:10px 18px;font-size:.9rem}
@media(max-width:820px){nav a:not(.btn){display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:600;font-size:1rem;padding:15px 26px;border-radius:999px;border:1.5px solid var(--deep);background:var(--deep);color:#fff;text-decoration:none;cursor:pointer;transition:transform .18s ease,background .2s,border-color .2s,color .2s}
.btn:hover{background:var(--moss);border-color:var(--moss);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--deep)}
.btn.ghost:hover{background:var(--tint)}
nav .btn,nav .btn:hover{color:#fff;border-bottom:1.5px solid var(--deep)}
nav .btn:hover{border-color:var(--moss)}

/* hero */
.hero{padding-block:clamp(40px,6vw,88px) clamp(48px,6vw,80px);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px);align-items:center}
.hero h1{margin-block:0 22px}
.hero h1 .w{display:inline-block;opacity:0;transform:translateY(.35em);animation:up .7s cubic-bezier(.2,.7,.2,1) forwards}
@keyframes up{to{opacity:1;transform:none}}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.proof{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:42px;padding-top:22px;border-top:1px solid var(--line)}
.proof b{display:block;font-family:var(--disp);font-size:1.5rem;font-weight:700;letter-spacing:-.02em;line-height:1}
.proof span{display:block;font-size:.84rem;color:var(--slate);margin-top:8px;line-height:1.4}
.scene{position:relative;background:var(--deep);border-radius:var(--r);overflow:hidden;aspect-ratio:5/4.6;opacity:0;animation:up .9s .2s cubic-bezier(.2,.7,.2,1) forwards}
.scene svg{position:absolute;inset:0;width:100%;height:100%}
.ring circle{stroke-dasharray:var(--d) 400;stroke-dashoffset:var(--d);animation:draw 1.2s .3s ease forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.pulse{animation:pulse 2.4s 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.scene{aspect-ratio:16/11}.proof{grid-template-columns:1fr 1fr 1fr;gap:10px}.proof b{font-size:1.2rem}}

/* sections */
section{padding-block:clamp(60px,8vw,110px)}
.sec-head{max-width:64ch;margin-bottom:clamp(28px,4vw,48px)}
.sec-head p{margin-top:16px;color:var(--slate);font-size:1.08rem}
.green{background:var(--deep);color:var(--ondeep)}
.green h2,.green h3{color:#fff}.green .sec-head p{color:var(--ondeep2)}
.green .btn{background:var(--ondeep);color:var(--deep);border-color:var(--ondeep)}
.green .btn:hover{background:var(--lime);border-color:var(--lime)}
.sand{background:var(--sand)}
.tinted{background:var(--tint)}

/* audience switch */
.switch{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:28px}
.switch button{font:inherit;text-align:left;background:var(--paper);border:1.5px solid var(--line);border-radius:12px;padding:16px 18px;cursor:pointer;color:var(--deep);transition:border-color .2s,background .2s}
.switch button b{display:block;font-family:var(--disp);font-size:1.08rem;font-weight:600;margin-bottom:4px}
.switch button span{font-size:.86rem;color:var(--slate)}
.switch button:hover{border-color:var(--leaf)}
.switch button[aria-selected="true"]{background:var(--deep);border-color:var(--deep);color:#fff}
.switch button[aria-selected="true"] span{color:var(--ondeep2)}
.pane{display:none;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,56px);align-items:start}
.pane.on{display:grid;animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.pane h3{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;margin-bottom:14px}
.pane p{color:var(--slate);margin-bottom:14px;max-width:58ch}
.pane .btn{margin-top:8px}
.facts{border-top:1px solid var(--line2)}
.facts div{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;padding:14px 0;border-bottom:1px solid var(--line2);font-size:.95rem}
.facts div b{font-family:var(--disp);font-weight:600;white-space:nowrap}
@media(max-width:820px){.switch{grid-template-columns:1fr 1fr}.pane{grid-template-columns:1fr}}
@media(max-width:420px){.facts div b{white-space:normal;text-align:right}}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(22px,4vw,48px);align-items:start}
.inputs label{display:block;margin-bottom:18px}
.inputs .lbl{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:6px}
.inputs .lbl output{font-family:var(--disp);font-weight:600}
input[type=range]{width:100%;accent-color:var(--leaf);height:28px}
.inputs .two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
input[type=number]{font:inherit;width:100%;padding:11px 12px;border:1.5px solid var(--line2);border-radius:10px;background:var(--paper);color:var(--deep)}
.result{background:var(--deep);color:var(--ondeep);border-radius:var(--r);padding:clamp(22px,3vw,34px)}
.result .big{font-family:var(--disp);font-size:clamp(2.4rem,5vw,4rem);font-weight:700;letter-spacing:-.03em;line-height:1;color:var(--lime)}
.result .k{color:var(--ondeep2);font-size:.9rem;margin-top:6px}
.rows{margin-top:24px;border-top:1px solid var(--deepline)}
.rows div{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--deepline);font-size:.95rem}
.rows div b{font-family:var(--disp);font-weight:600;color:#fff;white-space:nowrap}
.bars{margin-top:22px;display:grid;gap:10px}
.bar-row{display:grid;grid-template-columns:70px 1fr;gap:12px;align-items:center;font-size:.85rem;color:var(--ondeep2)}
.bar-row i{display:block;height:14px;border-radius:7px;background:var(--ondeep2);transition:width .5s cubic-bezier(.2,.7,.2,1)}
.bar-row i.cng{background:var(--lime)}
.result .note{font-size:.78rem;color:var(--ondeep2);margin-top:18px;line-height:1.5}
@media(max-width:820px){.calc{grid-template-columns:1fr}}

/* stadtwerke */
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,26px)}
.opt{background:rgba(255,255,255,.06);border:1px solid var(--deepline);border-radius:12px;padding:24px}
.opt h3{margin-bottom:10px}.opt p{color:var(--ondeep2);font-size:.95rem}
.opt .tag{display:inline-block;font-size:.8rem;padding:4px 10px;border-radius:999px;background:var(--lime);color:var(--deep);font-weight:600;margin-bottom:14px;font-family:var(--disp)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px;counter-reset:s}
.steps div{position:relative;padding:22px 18px 18px;border-top:2px solid var(--leaf)}
.steps div::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:18px;background:var(--deep);color:var(--lime);font-family:var(--disp);font-weight:700;padding:0 6px;font-size:.9rem}
.steps b{display:block;font-family:var(--disp);font-weight:600;margin-bottom:6px;color:#fff}
.steps p{font-size:.9rem;color:var(--ondeep2)}
.whynow{margin-top:40px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;background:var(--sand);color:var(--deep);border-radius:12px;padding:22px 26px}
.whynow p{font-size:.95rem;color:var(--slate);max-width:70ch}
.whynow b{color:var(--deep)}
.green .whynow .btn{background:var(--deep);color:#fff;border-color:var(--deep)}
.green .whynow .btn:hover{background:var(--moss);border-color:var(--moss)}
@media(max-width:820px){.three,.steps{grid-template-columns:1fr}.whynow{grid-template-columns:1fr}}

/* handel */
.handel{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:center}
.parts{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.part{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:18px}
.part svg{display:block;width:44px;height:44px;margin-bottom:12px}
.part b{display:block;font-family:var(--disp);font-weight:600;margin-bottom:4px}
.part span{font-size:.88rem;color:var(--slate)}
@media(max-width:820px){.handel{grid-template-columns:1fr}}
@media(max-width:420px){.parts{grid-template-columns:1fr}}

/* comparison */
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;min-width:680px;font-size:.93rem}
th,td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--disp);font-weight:600;background:var(--sand)}
tr:last-child td{border-bottom:0}
td.hl{background:var(--tint);font-weight:500}
th.hl{background:var(--leaf);color:#fff}
.tbl-note{font-size:.82rem;color:var(--slate);margin-top:12px;max-width:80ch}

/* network */
.netz{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:center}
.netz svg{width:100%;height:auto;display:block}
.netz ul{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:10px}
.netz li{display:grid;grid-template-columns:22px 1fr;gap:12px;font-size:.98rem}
.netz li::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--leaf);margin-top:7px}
@media(max-width:820px){.netz{grid-template-columns:1fr}}

/* about + contact */
.about{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,56px)}
.about p{color:var(--slate);margin-bottom:14px;max-width:58ch}
.about .sig{font-family:var(--disp);font-weight:600;color:var(--deep)}
.contact{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(24px,4vw,56px)}
form{display:grid;gap:14px}
form .two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form label{display:grid;gap:6px;font-size:.9rem}
form input,form select,form textarea{font:inherit;padding:12px 14px;border:1.5px solid var(--line2);border-radius:10px;background:var(--paper);color:var(--deep);min-width:0}
form textarea{min-height:120px;resize:vertical}
form .sent{display:none;background:var(--tint);border-radius:10px;padding:14px 16px;font-size:.95rem}
form .err{display:none;color:#8A2D1D;font-size:.9rem}
form .fine{font-size:.8rem;color:var(--slate)}
.cinfo{display:grid;gap:18px}
.cinfo b{display:block;font-family:var(--disp);font-weight:600}
.cinfo a{text-decoration:none}
@media(max-width:820px){.about,.contact,form .two{grid-template-columns:1fr}}

footer{background:var(--deep2);color:var(--ondeep2);padding:34px 0;font-size:.85rem}
footer .f{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer a{color:var(--ondeep);text-decoration:none}
footer a:hover{text-decoration:underline}
footer .b2b{font-size:.8rem;opacity:.85;margin-bottom:16px;max-width:90ch}

/* legal pages */
.legal{padding-block:clamp(40px,6vw,80px)}
.legal .in{max-width:72ch}
.legal h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:8px}
.legal .sub{color:var(--slate);margin-bottom:30px}
.legal h2{font-size:1.15rem;margin:28px 0 8px;letter-spacing:-.01em}
.legal p{color:var(--slate);margin-bottom:10px}
.legal p strong{color:var(--deep)}