:root{
  --bg:#0a0f1c; --bg2:#0e1628; --panel:rgba(16,24,42,.72); --panel-solid:#111a2e;
  --ink:#eaf0fb; --muted:#9fb0cc; --line:rgba(140,165,210,.18);
  --accent:#2fd8c4; --accent2:#4f9dff; --accent-ink:#04201d;
  --warn:#ffce6b; --err:#ff7a7a;
  --radius:16px; --shadow:0 16px 48px rgba(0,0,0,.45);
  --font:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6}
h1,h2,h3{line-height:1.15;margin:0 0 .5em;font-weight:700;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.6rem)}
h2{font-size:clamp(1.5rem,3.4vw,2.4rem)}
a{color:var(--accent);text-decoration:none}
.muted{color:var(--muted)}
.kicker{text-transform:uppercase;letter-spacing:.16em;font-size:.74rem;font-weight:700;
  color:var(--accent);margin:0 0 .8em}
.opt{color:var(--muted);font-weight:400;font-size:.85em}

/* ---- Buttons ---- */
.btn{display:inline-block;padding:.8em 1.4em;border-radius:999px;font-weight:600;
  border:1px solid var(--line);cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;font-size:1rem}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--accent-ink);
  border:none;box-shadow:0 8px 24px rgba(47,216,196,.25)}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.ghost:hover{background:rgba(255,255,255,.06)}
.btn.block{width:100%;text-align:center;border:none}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---- Canvas / 3D-Hintergrund ---- */
#bg{position:fixed;inset:0;width:100%;height:100%;z-index:0;display:block;
  background:radial-gradient(120% 90% at 70% 10%,#16233f 0%,#0a0f1c 60%)}
#loader{position:fixed;inset:0;display:grid;place-content:center;gap:1rem;z-index:5;
  background:var(--bg);transition:opacity .6s;text-align:center;color:var(--muted)}
#loader.done{opacity:0;pointer-events:none}
.spinner{width:42px;height:42px;border:3px solid var(--line);border-top-color:var(--accent);
  border-radius:50%;margin:0 auto;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---- Nav ---- */
.site-nav{display:flex;align-items:center;justify-content:space-between;
  padding:1rem clamp(1rem,4vw,3rem);gap:1rem}
.site-nav.floating{position:fixed;top:0;left:0;right:0;z-index:10;
  backdrop-filter:blur(10px);background:linear-gradient(180deg,rgba(10,15,28,.85),transparent)}
.brand{font-weight:800;letter-spacing:.02em;color:var(--ink);font-size:1.15rem}
.site-nav nav{display:flex;align-items:center;gap:1.4rem}
.site-nav nav a{color:var(--muted);font-weight:500}
.site-nav nav a:hover{color:var(--ink)}
.nav-cta{padding:.5em 1.1em;border-radius:999px;background:rgba(47,216,196,.14);
  color:var(--accent)!important;border:1px solid rgba(47,216,196,.3)}

/* ---- Scroll-Story ---- */
#story{position:relative;z-index:2}
.panel{min-height:100vh;display:flex;align-items:center;
  padding:6rem clamp(1.2rem,7vw,7rem)}
.panel .copy{max-width:620px}
.panel .copy.right{margin-left:auto}
.card{background:var(--panel);backdrop-filter:blur(12px);border:1px solid var(--line);
  border-radius:var(--radius);padding:clamp(1.6rem,3vw,2.6rem);box-shadow:var(--shadow)}
.hero h1{margin-bottom:.3em}
.sub{font-size:1.15rem;color:var(--muted);margin-bottom:1.6em}
.hero-actions{display:flex;gap:.9rem;flex-wrap:wrap;align-items:center}
.scroll-hint{margin-top:2.5rem;color:var(--muted);font-size:.85rem;letter-spacing:.1em;
  animation:bob 2s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0);opacity:.5}50%{transform:translateY(8px);opacity:1}}
.value-list{list-style:none;padding:0;margin:1.2em 0}
.value-list li{padding:.6em 0 .6em 1.6em;position:relative;border-top:1px solid var(--line)}
.value-list li::before{content:"→";position:absolute;left:0;color:var(--accent)}
.tiles-label{margin-top:1.4em;font-weight:600}

/* Reveal-Animation */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s,transform .7s}
.reveal.visible{opacity:1;transform:none}

#sticky-cta{position:fixed;right:1.2rem;bottom:1.2rem;z-index:20;opacity:0;
  transform:translateY(20px);transition:opacity .3s,transform .3s;pointer-events:none}
#sticky-cta.show{opacity:1;transform:none;pointer-events:auto}

.site-footer{position:relative;z-index:2;text-align:center;padding:2.5rem 1rem;
  color:var(--muted);font-size:.85rem;border-top:1px solid var(--line);background:var(--bg)}

/* ---- Dokument-Seiten (Tool, Blog) ---- */
body.doc{background:radial-gradient(120% 80% at 80% -10%,#15233f 0%,#0a0f1c 55%)}
.doc .site-nav{position:sticky;top:0;z-index:10;backdrop-filter:blur(10px);
  background:rgba(10,15,28,.8);border-bottom:1px solid var(--line)}
.doc-main{max-width:1100px;margin:0 auto;padding:clamp(2rem,5vw,4rem) clamp(1.2rem,4vw,2rem)}
.blog-head{margin-bottom:2.5rem;max-width:760px}

/* ---- Tool ---- */
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;align-items:start}
@media(max-width:900px){.tool-grid{grid-template-columns:1fr}}
.panel-card{background:var(--panel-solid);border:1px solid var(--line);
  border-radius:var(--radius);padding:clamp(1.4rem,3vw,2rem);box-shadow:var(--shadow)}
.side-cols{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
@media(max-width:560px){.side-cols{grid-template-columns:1fr}}
fieldset{border:1px solid var(--line);border-radius:12px;padding:1rem 1.1rem 1.2rem;margin:0 0 1.2rem}
legend{padding:0 .5em;font-weight:700;color:var(--accent2);font-size:.9rem}
label{display:block;font-size:.85rem;color:var(--muted);margin:.7rem 0}
input,select{width:100%;margin-top:.3rem;padding:.6em .7em;border-radius:9px;
  border:1px solid var(--line);background:#0b1322;color:var(--ink);font-size:1rem;font-family:inherit}
input:focus,select:focus{outline:none;border-color:var(--accent)}
.envelope{background:rgba(79,157,255,.05)}
.form-note{font-size:.82rem;color:var(--muted);margin-top:1rem}

/* Live-Strömungsschema (schematic.js) — auf das dunkle Thermexa-Theme gemappt.
   Die Variablennamen sind die des wiederverwendeten Moduls; hier nur ihre Werte. */
.schematic-box{margin:0 0 1.2rem;padding:1rem 1.1rem 1.2rem;border:1px solid var(--line);
  border-radius:12px;background:rgba(79,157,255,.04)}
.schematic-cap{margin:0 0 .6rem;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent2);font-weight:700}
.tool-schematic{
  --ch-2:#ff8a5c;            /* HOT  — warmes Rot (heiße Seite) */
  --ch-0:#4f9dff;            /* COLD — Blau (kalte Seite) */
  --ink-4:#6b7a93;           /* NEU  — neutral/grau */
  --line-2:rgba(140,165,210,.30);
  --bg-sunken:#0b1322;       /* SURF — Mantelkörper/Plattenfüllung */
  --bg:#13203a;              /* FACE — Hauben/ΔTm-Box (leicht erhaben) */
  --ink-2:#c3d0e6;
  --ink-3:#9fb0cc;
  --mono:'SFMono-Regular',ui-monospace,'Cascadia Code',Consolas,monospace;
}
.tool-schematic svg{max-width:420px;margin:0 auto}

/* Ergebnis */
.result-values{display:grid;grid-template-columns:1fr 1fr;gap:.7rem;margin:1rem 0 1.4rem}
@media(max-width:560px){.result-values{grid-template-columns:1fr}}
.rv{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;
  padding:.7em .9em;background:#0b1322;border:1px solid var(--line);border-radius:10px}
.rv-label{color:var(--muted);font-size:.84rem}
.rv-val{font-weight:700;font-size:1.1rem;font-variant-numeric:tabular-nums}
.rv-val small{color:var(--muted);font-weight:500;font-size:.7em}
.notes{list-style:none;padding:0;margin:0 0 1.4rem}
.notes li{padding:.55em .8em;background:rgba(255,206,107,.08);border-left:3px solid var(--warn);
  border-radius:6px;margin-bottom:.5rem;font-size:.86rem;color:#ffe6b0}
.error-box{padding:1em;background:rgba(255,122,122,.12);border:1px solid var(--err);
  border-radius:10px;color:#ffc9c9}

/* Premium-Lock */
.premium-lock{margin-top:1.6rem;padding:1.3rem;border:1px dashed rgba(79,157,255,.4);
  border-radius:14px;background:linear-gradient(180deg,rgba(79,157,255,.07),transparent)}
.lock-head{display:flex;align-items:center;gap:.6rem;margin-bottom:.4rem}
.lock-head h3{margin:0;font-size:1.1rem}
.lock-icon{font-size:1.3rem}
.locked-list{list-style:none;padding:0;margin:.6rem 0 1rem}
.locked-list li{padding:.4em 0 .4em 1.7em;position:relative;color:var(--muted);
  border-top:1px solid var(--line)}
.locked-list li::before{content:"🔒";position:absolute;left:0;font-size:.8em;opacity:.7}

/* ---- Blog ---- */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.4rem}
.post-card{display:block;padding:1.5rem;background:var(--panel-solid);border:1px solid var(--line);
  border-radius:var(--radius);transition:transform .15s,border-color .15s}
.post-card:hover{transform:translateY(-4px);border-color:var(--accent)}
.post-card h2{font-size:1.3rem;color:var(--ink);margin:.3em 0}
.post-card p{color:var(--muted);font-size:.95rem}
.post-date{font-size:.78rem;color:var(--accent);letter-spacing:.05em}
.post-more{color:var(--accent);font-weight:600;font-size:.9rem}
.article{max-width:760px;margin:0 auto}
.article p,.article li{color:#d3deef}
.article h2{margin-top:1.6em}
.article code{background:#0b1322;padding:.15em .4em;border-radius:5px;font-size:.9em}
.article pre{background:#0b1322;padding:1rem;border-radius:10px;overflow:auto;border:1px solid var(--line)}
.article table{border-collapse:collapse;width:100%;margin:1.2em 0}
.article th,.article td{border:1px solid var(--line);padding:.5em .8em;text-align:left}
.article-cta{margin:2.5rem 0 1.5rem}