/* ===== Tokens ===== */
:root{
  --paper:#f4f1ea;
  --paper-2:#ebe6db;
  --ink:#1b2419;
  --ink-2:#3d4a3a;
  --muted:#6f7a6b;
  --line:rgba(27,36,25,.14);
  --pine:#1f3a2a;
  --pine-2:#2c5a3d;
  --moss:#7e9a6a;
  --amber:#c88a3d;
  --amber-2:#e0a85a;
  --serif:"Fraunces",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,sans-serif;
  --wrap:1180px;
  --r:18px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.01em;line-height:1.05;margin:0 0 .5em}
h1{font-size:clamp(2.6rem,6vw,5.4rem)}
h2{font-size:clamp(2rem,4.4vw,3.6rem)}
h3{font-size:1.45rem;line-height:1.2}
.display{font-size:clamp(2.8rem,7vw,6.4rem);font-weight:300}
.display em{font-style:italic;font-weight:300;color:var(--amber)}
p{margin:0 0 1em}
a{color:inherit}
.eyebrow{
  font-family:var(--sans);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--amber);font-weight:600;margin-bottom:1.1em
}
.lede{font-size:clamp(1.05rem,1.4vw,1.25rem);color:var(--ink-2);max-width:34em}
.muted{color:var(--muted)}
.fine{font-size:.78rem;color:var(--muted);line-height:1.5}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.section{padding:clamp(80px,12vw,160px) 0}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,96px);align-items:start}
@media (max-width:820px){.grid-2{grid-template-columns:1fr}}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  background:var(--ink);color:var(--paper);text-decoration:none;
  padding:.95em 1.6em;border-radius:999px;font-weight:500;font-size:.98rem;
  border:0;cursor:pointer;transition:transform .4s var(--ease),background .3s;
}
.btn:hover{transform:translateY(-2px);background:var(--pine)}
.btn-small{padding:.6em 1.15em;font-size:.88rem;white-space:nowrap}
.btn-full{width:100%}

/* ===== Nav ===== */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:18px clamp(20px,3vw,40px);
  color:var(--paper);
  transition:color .4s,background .4s,backdrop-filter .4s;
}
.nav.solid{color:var(--ink);background:rgba(244,241,234,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--serif);font-size:1.3rem;letter-spacing:-.01em}
.brand-mark{width:26px;height:26px}
.nav-links{display:flex;gap:28px;font-size:.92rem}
.nav-links a{text-decoration:none;opacity:.85}
.nav-links a:hover{opacity:1}
.nav-right{display:flex;align-items:center;gap:14px}
.nav.solid .btn-small{background:var(--ink);color:var(--paper)}
.nav:not(.solid) .btn-small{background:var(--paper);color:var(--ink)}
.lang{
  display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid currentColor;
  border-radius:999px;padding:5px 10px;font:inherit;font-size:.78rem;letter-spacing:.06em;color:inherit;cursor:pointer;opacity:.85
}
.lang i{width:1px;height:12px;background:currentColor;opacity:.4}
.lang span{opacity:.45}
html[lang="de"] .lang [data-lang="de"],html[lang="en"] .lang [data-lang="en"]{opacity:1;font-weight:600}
@media (max-width:820px){.nav-links{display:none}}
@media (max-width:520px){
  .nav{padding:14px 16px;gap:10px}
  .brand{font-size:1.1rem}.brand-mark{width:22px;height:22px}
  .btn-small{padding:.55em .9em;font-size:.8rem}
  .lang{padding:4px 8px;font-size:.72rem}
}

/* ===== Story ===== */
.story{height:700vh;position:relative}
.story-stage{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;background:#2c4d88}
.story-stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.caption{
  position:absolute;color:var(--paper);pointer-events:none;opacity:0;
  transform:translateY(24px);will-change:opacity,transform;
  padding:0 clamp(20px,5vw,72px);
}
.caption.on{pointer-events:auto}
.caption h1,.caption h2{margin-bottom:.35em;text-shadow:0 1px 2px rgba(0,0,0,.25)}
.caption .lede{color:rgba(244,241,234,.9);text-shadow:0 1px 2px rgba(0,0,0,.3)}
.caption .eyebrow{color:var(--amber-2)}
.caption.ink{color:var(--ink)}
.caption.ink h1,.caption.ink h2{text-shadow:0 1px 0 rgba(255,255,255,.25)}
.caption.ink .eyebrow{color:#8a5a1e}
.caption.ink .lede{color:var(--ink-2);text-shadow:none}
.caption.ink .display em{color:var(--pine-2)}
.caption.question .display{font-size:clamp(3rem,8.5vw,8rem);font-weight:400;color:var(--pine);text-shadow:none}
.caption.question .display em{color:#b8782a;font-weight:500}
.cap-hero{left:0;right:0;bottom:10vh}
.cap-hero h1{max-width:14em}
.cap-center{left:0;right:0;top:50%;transform:translateY(calc(-50% + 24px));text-align:center}
.cap-center .lede{margin:0 auto 1.6em}
.cap-left{left:0;top:50%;max-width:640px;transform:translateY(calc(-50% + 24px))}
.scroll-hint{
  font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;opacity:.7;margin-top:2em;
  display:flex;align-items:center;gap:12px
}
.scroll-hint::after{content:"";width:1px;height:40px;background:currentColor;animation:drip 1.8s infinite var(--ease)}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}
.num{font-variant-numeric:tabular-nums}
@media (max-width:820px){.cap-hero{bottom:8vh}}

/* ===== Intro ===== */
.intro{background:var(--paper);padding-top:0}
.intro-figure{margin:0 0 clamp(64px,8vw,120px);position:relative;transform:translateY(-18vh);margin-bottom:calc(clamp(64px,8vw,120px) - 18vh)}
.intro-figure img{display:block;width:100%;aspect-ratio:21/9;object-fit:cover;object-position:center 40%;border-radius:var(--r);box-shadow:0 40px 100px -30px rgba(27,36,25,.45)}
.intro-figure figcaption{font-size:.82rem;color:var(--muted);margin-top:14px}
.intro-figure.reveal{transform:translateY(calc(-18vh + 28px))}
.intro-figure.reveal.in{transform:translateY(-18vh)}
.prose p{font-size:clamp(1.05rem,1.35vw,1.2rem);color:var(--ink-2)}
.prose p:first-child::first-letter{font-family:var(--serif);font-size:3.2em;float:left;line-height:.85;margin:.06em .12em 0 0;color:var(--pine)}

/* ===== How ===== */
.how{background:var(--pine);color:var(--paper)}
.how .eyebrow{color:var(--amber-2)}
.steps{list-style:none;padding:0;margin:56px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:2px;border-radius:var(--r);overflow:hidden}
.step{background:rgba(255,255,255,.05);padding:36px 32px 40px;position:relative}
.step-n{font-family:var(--serif);font-size:.95rem;color:var(--amber-2);letter-spacing:.1em;display:block;margin-bottom:60px}
.step p{color:rgba(244,241,234,.72);margin:0}
@media (max-width:820px){.steps{grid-template-columns:1fr}.step-n{margin-bottom:24px}}

/* ===== Calc ===== */
.calc{background:var(--paper-2);position:relative;overflow:hidden;padding:clamp(200px,24vw,340px) 0 clamp(150px,17vw,250px)}
.calc .wrap{position:relative;z-index:1}
.calc-card{
  display:grid;grid-template-columns:1.2fr .9fr;gap:2px;border-radius:var(--r);overflow:hidden;
  box-shadow:0 30px 80px -34px rgba(27,36,25,.35)
}
.calc-left,.calc-right{background:var(--paper);padding:clamp(28px,4vw,56px)}
.calc-right{background:#fff;display:flex;flex-direction:column;gap:28px}
.presets{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 36px}
.presets button{
  display:inline-flex;align-items:center;gap:.55em;
  font:inherit;font-size:.92rem;padding:.5em 1.1em .5em .6em;border-radius:999px;cursor:pointer;
  background:transparent;border:1px solid var(--line);color:var(--ink-2);transition:all .25s
}
.presets button:hover{border-color:var(--ink)}
.presets button.active{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.presets button img{width:34px;height:26px;object-fit:contain}
.presets button.active img{filter:brightness(1.15)}
.field span{display:block;font-size:.85rem;color:var(--muted);margin-bottom:12px}
.field-row{display:flex;align-items:center;gap:20px}
.field-row output{font-family:var(--serif);font-size:1.4rem;min-width:4.5ch;text-align:right;font-variant-numeric:tabular-nums}
.field-ends{display:flex;justify-content:space-between;margin-top:6px;padding-right:calc(4.5ch + 20px)}
.field-ends span{font-size:.72rem;color:var(--muted);margin:0}
input[type=range]{flex:1;accent-color:var(--pine);height:2px;outline:none}
input[type=range]:focus-visible{outline:2px solid var(--amber);outline-offset:6px;border-radius:4px}
.result .eyebrow{margin-bottom:.4em;color:var(--muted)}
.result .big{font-family:var(--serif);font-size:clamp(2.6rem,4vw,3.6rem);line-height:1;margin:0 0 .2em;font-variant-numeric:tabular-nums}
.result .big small{font-size:.45em;color:var(--muted)}
.result .muted{margin:0;font-size:.92rem;font-variant-numeric:tabular-nums}
@media (max-width:820px){.calc-card{grid-template-columns:1fr}.calc{padding:clamp(150px,34vw,220px) 0 clamp(130px,26vw,180px)}}

/* Rechner-Wald: zwei Canvas-Ebenen, hinter und vor der Karte. Oben und unten Platz für Kronen und Boden. */
.calc-forest{position:absolute;inset:0;width:100%;height:100%;display:block;pointer-events:none}
.calc-forest-back{z-index:0}
.calc-forest-front{z-index:2}

/* ===== Trust ===== */
.trust{background:var(--paper)}
.trust-head{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(32px,6vw,96px);align-items:center;margin-bottom:64px}
.trust-head .cert{width:100%;max-width:520px;justify-self:end;filter:drop-shadow(0 30px 50px rgba(27,36,25,.25));transform:rotate(-3deg)}
.trust-head .cert.reveal.in{transform:rotate(-3deg)}
@media (max-width:820px){.trust-head{grid-template-columns:1fr}.trust-head .cert{justify-self:start;max-width:380px}}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.card{border-top:1px solid var(--ink);padding-top:22px}
.card h3{font-size:1.25rem;margin-bottom:.5em}
.card p{color:var(--ink-2);font-size:.98rem;margin:0}
@media (max-width:1000px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}

/* ===== FAQ ===== */
.faq{background:var(--paper-2)}
.accordion details{border-bottom:1px solid var(--line)}
.accordion summary{
  list-style:none;cursor:pointer;padding:22px 40px 22px 0;font-family:var(--serif);font-size:1.3rem;position:relative
}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-family:var(--sans);font-weight:300;font-size:1.6rem;color:var(--muted);transition:transform .3s
}
.accordion details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.accordion p{color:var(--ink-2);padding:0 0 24px;margin:0;max-width:40em}

/* ===== CTA ===== */
.cta{background:var(--pine);color:var(--paper);background-size:cover;background-position:center}
.cta-inner{text-align:center;max-width:720px}
.cta .lede{color:rgba(244,241,234,.8);margin:0 auto 2.2em}
.signup{display:flex;gap:10px;max-width:520px;margin:0 auto;position:relative;flex-wrap:wrap;justify-content:center}
.signup input{
  flex:1;min-width:240px;font:inherit;padding:.95em 1.3em;border-radius:999px;border:1px solid rgba(244,241,234,.3);
  background:rgba(255,255,255,.06);color:var(--paper);outline:none
}
.signup input::placeholder{color:rgba(244,241,234,.5)}
.signup input:focus{border-color:var(--amber-2)}
.signup .btn{background:var(--amber);color:var(--ink)}
.signup .btn:hover{background:var(--amber-2)}
.sent-msg{display:none;width:100%;margin-top:12px;color:var(--amber-2)}
.signup.sent .sent-msg{display:block}

/* ===== Footer ===== */
.footer{padding:32px 0;font-size:.85rem;color:var(--muted)}
.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer a{text-decoration:none}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.12s}
.reveal:nth-child(3){transition-delay:.24s}
.reveal:nth-child(4){transition-delay:.36s}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .scroll-hint::after{animation:none}
}