/* go4Solar – Design: Navy + Orange, iOS-Anmutung (Glas, weiche Karten, große Typo) */
:root{
  --bg:#f3f5fa; --ink:#101a3d; --muted:#56607f; --card:#ffffff; --line:rgba(16,26,61,.10);
  --navy:#0f1b44; --navy2:#0a1233; --orange:#f26a1b; --orange-ink:#bf4a08; --sun:#ffbf2f;
  --ok:#157a4a; --warn:#9a5b00; --shadow:0 1px 2px rgba(16,26,61,.06),0 10px 30px rgba(16,26,61,.07);
  --r:22px; --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI Variable","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#080e29; --ink:#eef1fb; --muted:#a6afcb; --card:#111a46; --line:rgba(255,255,255,.12);
  --orange-ink:#ff8d42; --ok:#4fd08f; --warn:#ffc25c; --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.65 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%}
a{color:var(--orange-ink);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--orange);outline-offset:3px;border-radius:6px}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}
.sr,.skip:not(:focus){position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip:focus{position:fixed;top:8px;left:8px;z-index:100;background:#fff;color:#000;padding:10px 14px;border-radius:10px}

/* Header (Glas) */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 72%,transparent);
  backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;min-height:60px;gap:16px}
.logo{font:italic 800 1.55rem/1 var(--font);letter-spacing:-.04em;color:var(--ink);text-decoration:none;white-space:nowrap}
.logo b{color:var(--orange);font-weight:800;display:inline-block;transform:translateY(-1px)}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:var(--ink);text-decoration:none;font-size:.92rem;font-weight:500;padding:8px 10px;border-radius:999px}
.nav a:hover{background:var(--line)}
.nav a[aria-current=page]{background:var(--line);font-weight:650}
.nav .nav-cta{margin-left:6px;color:#101a3d}
.menu-btn{display:none;width:44px;height:44px;border:0;background:transparent;border-radius:12px;cursor:pointer;position:relative}
.menu-btn i{position:absolute;left:12px;right:12px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.menu-btn i:first-child{top:18px}.menu-btn i:last-child{top:25px}
.menu-btn[aria-expanded=true] i:first-child{top:21px;transform:rotate(45deg)}
.menu-btn[aria-expanded=true] i:last-child{top:21px;transform:rotate(-45deg)}
@media (max-width:1060px){
  .menu-btn{display:block}
  .js .nav{position:absolute;top:60px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:8px 16px 18px;
    background:var(--bg);border-bottom:1px solid var(--line);display:none}
  .js .nav.open{display:flex}
  .nav a{padding:14px 12px;font-size:1.05rem}
  .nav .nav-cta{margin:8px 0 0;text-align:center}
  html:not(.js) .bar{flex-wrap:wrap;padding:8px 0}html:not(.js) .nav{flex-wrap:wrap}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--orange);color:#101a3d;font:650 1rem/1 var(--font);
  padding:15px 24px;border-radius:999px;text-decoration:none;border:0;cursor:pointer;transition:transform .15s,filter .15s}
.btn:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn:active{transform:scale(.98)}
.btn-sm{padding:11px 18px;font-size:.92rem}
.btn-ghost{background:transparent;color:inherit;box-shadow:inset 0 0 0 1.5px currentColor}
.hero .btn-ghost{color:#fff}

/* Hero */
.hero{background:radial-gradient(900px 500px at 85% -10%,rgba(242,106,27,.28),transparent 60%),linear-gradient(180deg,var(--navy),var(--navy2));
  color:#fff;padding:56px 0 64px;overflow:hidden}
.hero .grid2{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(2.4rem,6.4vw,4.6rem);line-height:1.02;letter-spacing:-.045em;font-weight:800;margin:.2em 0 .35em}
.hero h1 em{font-style:normal;color:var(--sun)}
.hero .lead{color:rgba(255,255,255,.82);font-size:clamp(1.05rem,2.2vw,1.3rem);max-width:34ch}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-chart{width:100%;height:auto;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:26px;padding:14px 10px 4px}
.draw{stroke-dasharray:1400;stroke-dashoffset:1400;animation:draw 2.2s cubic-bezier(.3,.7,.2,1) .2s forwards}
.draw.d2{animation-delay:.7s}
@keyframes draw{to{stroke-dashoffset:0}}
.hero .cap{font-size:.85rem;color:rgba(255,255,255,.65);margin:10px 4px 0}
@media (max-width:860px){.hero{padding:36px 0 44px}.hero .grid2{grid-template-columns:1fr;gap:28px}}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--sun)}
.page-hero{padding:48px 0 32px}
.page-hero .eyebrow{color:var(--orange-ink)}
.page-hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.06;letter-spacing:-.04em;font-weight:800;margin:.25em 0 .3em;max-width:20ch}
.page-hero .lead{font-size:1.2rem;color:var(--muted);max-width:60ch;margin:0}

/* Sektionen & Karten */
section{padding:56px 0}
section.tight{padding:32px 0}
h2{font-size:clamp(1.55rem,3.4vw,2.3rem);line-height:1.12;letter-spacing:-.03em;font-weight:780;margin:0 0 .5em}
h3{font-size:1.2rem;letter-spacing:-.015em;margin:0 0 .4em;line-height:1.25}
.sub{color:var(--muted);max-width:62ch;margin:0 0 28px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow)}
a.card{display:block;color:inherit;text-decoration:none;transition:transform .2s,box-shadow .2s}
a.card:hover{transform:translateY(-3px)}
.card .ico{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--orange),var(--sun));display:grid;place-items:center;margin-bottom:14px;color:#101a3d}
.card .ico svg{width:24px;height:24px}
.card p{margin:.3em 0 0;color:var(--muted)}
.card .more{display:inline-block;margin-top:14px;color:var(--orange-ink);font-weight:650}
.band{background:var(--card);border-block:1px solid var(--line)}
.question{font-size:clamp(1.5rem,3.6vw,2.4rem);line-height:1.15;letter-spacing:-.03em;font-weight:780;max-width:22ch}
.three{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:18px;margin-top:24px}
.three div{border-left:3px solid var(--orange);padding:2px 0 2px 16px}
.three b{display:block;font-size:1.05rem}.three span{color:var(--muted)}

/* Fließtext */
.prose{max-width:720px}
.prose h2{margin-top:1.6em;font-size:clamp(1.4rem,3vw,1.9rem)}
.prose h3{margin-top:1.4em}
.prose p,.prose li{color:var(--ink)}
.prose ul,.prose ol{padding-left:1.25em}.prose li{margin:.35em 0}
.prose .lead{font-size:1.2rem;color:var(--muted)}
.callout{border-radius:var(--r);padding:20px 22px;background:color-mix(in srgb,var(--sun) 22%,var(--card));border:1px solid color-mix(in srgb,var(--sun) 55%,transparent);margin:1.4em 0}
.callout.info{background:var(--card);border-color:var(--line);box-shadow:var(--shadow)}
.callout strong:first-child{display:block;margin-bottom:.2em}
table.t{width:100%;border-collapse:collapse;font-size:.98rem;margin:1em 0}
.t th,.t td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.t th{font-weight:700;color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* Produkte */
.product{display:flex;flex-direction:column;gap:6px;position:relative}
.product .btn{margin-top:auto;align-self:flex-start}
.tag-ad{align-self:flex-start;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.meta{margin:0;color:var(--orange-ink);font-weight:650;font-size:.92rem}
.proscons{display:grid;grid-template-columns:1fr 1fr;gap:12px;font-size:.92rem;margin:6px 0 14px}
.proscons ul{margin:0;padding:0;list-style:none}.proscons li{padding-left:20px;position:relative;margin:.3em 0;color:var(--ink)}
.pro li::before{content:"+";position:absolute;left:0;color:var(--ok);font-weight:800}
.contra li::before{content:"–";position:absolute;left:0;color:var(--warn);font-weight:800}
@media (max-width:420px){.proscons{grid-template-columns:1fr}}

/* Bedarfs-Check */
.check{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:22px;align-items:start}
@media (max-width:900px){.check{grid-template-columns:1fr}}
.field{margin-bottom:18px}
.field label,.field legend{display:flex;justify-content:space-between;gap:12px;font-weight:650;margin-bottom:8px;font-size:.98rem}
.field output{color:var(--orange-ink);font-variant-numeric:tabular-nums}
.field select,.field input[type=number]{width:100%;font:inherit;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.field input[type=range]{width:100%;accent-color:var(--orange);height:32px}
.field small{display:block;color:var(--muted);margin-top:4px;font-size:.86rem}
.seg{display:flex;background:var(--bg);border-radius:14px;padding:4px;gap:4px;border:1px solid var(--line)}
.seg label{flex:1;margin:0;font-weight:600;justify-content:center}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:block;width:100%;text-align:center;padding:10px 6px;border-radius:10px;cursor:pointer;font-size:.92rem}
.seg input:checked+span{background:var(--card);box-shadow:var(--shadow);color:var(--orange-ink)}
.seg input:focus-visible+span{outline:3px solid var(--orange)}
.result svg{width:100%;height:auto;display:block}
.chart-axis{fill:var(--muted);font:11px var(--font)}
.legend{display:flex;flex-wrap:wrap;gap:14px;font-size:.88rem;color:var(--muted);margin:8px 0 18px}
.legend i{display:inline-block;width:14px;height:4px;border-radius:2px;margin-right:6px;vertical-align:middle}
.kpis{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:18px}
.kpi{background:var(--bg);border-radius:16px;padding:14px 16px}
.kpi b{display:block;font-size:1.7rem;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1.1}
.kpi span{font-size:.86rem;color:var(--muted)}
.verdict{border-radius:18px;padding:18px 20px;font-weight:550;background:color-mix(in srgb,var(--sun) 24%,var(--card));border:1px solid color-mix(in srgb,var(--sun) 60%,transparent)}
.verdict b{display:block;margin-bottom:4px;font-size:1.1rem}
.nojs-note{display:none}
html:not(.js) .nojs-note{display:block}
html:not(.js) .check .result{display:none}

/* Footer */
.site-footer{background:var(--navy2);color:rgba(255,255,255,.78);padding:48px 0 36px;margin-top:40px;font-size:.95rem}
.site-footer .logo{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:28px;margin-bottom:28px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}}
.foot-grid h2{font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin:0 0 10px;font-weight:700}
.foot-grid a:not(.logo){display:block;color:rgba(255,255,255,.78);text-decoration:none;padding:4px 0}
.foot-grid a:hover{color:#fff;text-decoration:underline}
.slogan{margin:.5em 0 0;color:var(--sun);font-weight:650}
.fine{font-size:.82rem;color:rgba(255,255,255,.55);margin:.6em 0;max-width:90ch}

/* Reveal */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}.reveal,.js .reveal{opacity:1!important;transform:none!important;transition:none!important}
  .draw{animation:none;stroke-dashoffset:0}.btn,a.card{transition:none}}

/* Bedarfs-Check v2 */
.check{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr)}
.check .result{position:sticky;top:76px;max-height:calc(100vh - 92px);overflow:auto}
@media (max-width:900px){.check .result{position:static;max-height:none}}
.step{margin-bottom:18px}
.step>h2{font-size:1.2rem;margin:0 0 4px;display:flex;align-items:center;gap:10px}
.step>h2 b{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--orange);color:#101a3d;font-size:.9rem}
.step>.sub{margin:0 0 16px;font-size:.92rem}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{margin:0;font-weight:600}
.chips input{position:absolute;opacity:0;pointer-events:none}
.chips span{display:inline-block;padding:9px 14px;border-radius:999px;border:1px solid var(--line);background:var(--bg);cursor:pointer;font-size:.92rem}
.chips input:checked+span{background:var(--orange);color:#101a3d;border-color:var(--orange)}
.chips input:focus-visible+span{outline:3px solid var(--orange);outline-offset:2px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:480px){.row2{grid-template-columns:1fr}}
.dev{border:1px solid var(--line);border-radius:16px;padding:0;margin:0 0 10px;background:var(--bg)}
.dev-toggle{display:flex;align-items:center;gap:12px;padding:13px 14px;cursor:pointer;font-weight:650;margin:0}
.dev-toggle input{width:20px;height:20px;accent-color:var(--orange);flex:none}
.dev-toggle small{font-weight:400;color:var(--muted);margin-left:auto;text-align:right;font-size:.8rem}
.dev-body{display:none;padding:0 14px 14px}
.dev.on{background:var(--card);box-shadow:var(--shadow)}
.dev.on .dev-body{display:block}
.dev-body .field{margin-bottom:12px}
.dev-body .field label{font-size:.88rem;font-weight:600}
.dev-body .field select,.dev-body .field input[type=number]{padding:10px 12px}
.dev-hint{font-size:.84rem;color:var(--muted);margin:2px 0 0}
.dev-time{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stack-legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.84rem;color:var(--muted);margin:8px 0 16px}
.stack-legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.insights{margin:0 0 16px;padding-left:1.15em;font-size:.96rem}
.insights li{margin:.45em 0}
.kpis.k3{grid-template-columns:repeat(3,1fr)}
@media (max-width:520px){.kpis.k3{grid-template-columns:1fr 1fr}}
.mini{font-size:.9rem}
.mini th,.mini td{padding:8px 8px}
.warnline{color:var(--warn);font-size:.9rem;margin:6px 0 0}
.btn-line{background:transparent;color:var(--orange-ink);box-shadow:inset 0 0 0 1.5px currentColor}

/* Selbst messen */
.readtbl{width:100%;border-collapse:collapse}
.readtbl th{font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);text-align:left;padding:6px 6px}
.readtbl td{padding:4px 6px}
.readtbl input{width:100%;font:inherit;padding:10px 10px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.readtbl .rm{border:0;background:transparent;color:var(--muted);font-size:1.3rem;cursor:pointer;padding:4px 10px;border-radius:10px}
.readtbl .rm:hover{background:var(--line)}
.btnrow{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 0}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding:4px 0 16px 48px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:34px;height:34px;border-radius:50%;background:var(--orange);color:#101a3d;font-weight:800;display:grid;place-items:center}
.print-sheet{display:none}
@media print{
  body.printing .site-header,body.printing .site-footer,body.printing .skip{display:none}
  body.printing main>section:not(#vorlage){display:none}
  body.printing #vorlage{display:block;padding:0}
  body.printing .noprint{display:none}
  body.printing .print-sheet{display:block}
  .print-sheet td,.print-sheet th{border:1px solid #888;padding:10px 8px;color:#000}
}