:root{--btc-orange: #ff6a13;--btc-orange-soft: #ffe9dc;--btc-teal: #00a98f;--btc-mint: #d8f0e4;--btc-ink: #14142b;--btc-muted: #6b7280;--btc-line: #e6e8ec;--btc-bg: #fdf9f4;--surface: #ffffff;--radius-md: 12px;--radius-lg: 18px;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(20, 20, 43, .04), 0 1px 3px rgba(20, 20, 43, .06);--shadow-md: 0 4px 14px rgba(20, 20, 43, .07), 0 2px 4px rgba(20, 20, 43, .04);--shadow-lg: 0 12px 40px rgba(20, 20, 43, .1);--font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font);background:var(--btc-bg);color:var(--btc-ink);line-height:1.55}a{color:inherit}.top{display:flex;align-items:center;justify-content:space-between;padding:.9rem clamp(1rem,4vw,2.5rem);background:var(--btc-ink);color:#fff}.top__brand{display:flex;align-items:center;gap:.6rem;text-decoration:none}.top__mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--btc-teal)}.top__name{font-size:1.15rem;letter-spacing:.2px}.top__name b{color:var(--btc-orange)}.top__nav{display:flex;gap:.4rem;flex-wrap:wrap}.top__nav a{text-decoration:none;padding:.45rem .9rem;border-radius:var(--radius-pill);color:#d9dbe6;font-size:.95rem}.top__nav a:hover{background:#ffffff1f;color:#fff}.top__nav a.on{background:var(--btc-orange);color:#fff}.page{max-width:72rem;margin:0 auto;padding:clamp(1rem,4vw,2.5rem)}.foot{text-align:center;color:var(--btc-muted);font-size:.85rem;padding:2rem 1rem 2.5rem}.hero{text-align:center;padding:clamp(1.5rem,6vw,4rem) 0 1.5rem}.hero h1{font-size:clamp(1.9rem,5vw,3rem);margin:0 0 .5rem}.hero h1 b{color:var(--btc-orange)}.hero p{color:var(--btc-muted);font-size:1.1rem;max-width:38rem;margin:0 auto}.einstiege{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));margin:2rem 0}.einstieg{display:block;text-decoration:none;background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-lg);padding:1.4rem;box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .12s ease}.einstieg:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.ic{width:30px;height:30px;display:block}.einstieg .ic{color:var(--btc-orange);margin-bottom:.2rem}.einstieg--werkbank .ic{color:#fff}.einstieg h2{margin:.5rem 0 .3rem;font-size:1.2rem}.einstieg p{margin:0;color:var(--btc-muted);font-size:.95rem}.einstieg--werkbank{background:linear-gradient(135deg,var(--btc-orange) 0%,#ff8a47 100%);color:#fff;border:none}.einstieg--werkbank p{color:#ffffffe6}.frisch{background:var(--btc-mint);border-radius:var(--radius-lg);padding:1.3rem 1.5rem;margin-top:1rem}.frisch h2{margin:0 0 .3rem;font-size:1rem;text-transform:uppercase;letter-spacing:.08em;color:var(--btc-teal)}.frisch a{font-weight:600}.grid{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.karte{display:flex;flex-direction:column;text-decoration:none;background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .12s ease,box-shadow .12s ease}.karte:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}.karte__bild{aspect-ratio:16/9;background:var(--btc-orange-soft);object-fit:cover;width:100%}.karte__body{padding:1.1rem 1.2rem 1.3rem}.karte h2{margin:0 0 .35rem;font-size:1.15rem}.karte p{margin:0;color:var(--btc-muted);font-size:.95rem}.status{display:inline-block;font-size:.78rem;font-weight:600;border-radius:var(--radius-pill);padding:.15rem .7rem;margin-bottom:.6rem}.status--produktiv{background:var(--btc-mint);color:#04745f}.status--mvp{background:var(--btc-orange-soft);color:#c14e00}.status--idee{background:#eef1ff;color:#3f51b5}.story{max-width:46rem;margin:0 auto}.story h1{font-size:clamp(1.6rem,4vw,2.4rem);margin-bottom:.4rem}.story__block{background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-lg);padding:1.2rem 1.4rem;margin:1rem 0}.story__block h2{margin:0 0 .4rem;font-size:1rem;color:var(--btc-orange)}.story__block p{margin:0;white-space:pre-line}.story img{max-width:100%;border-radius:var(--radius-md);box-shadow:var(--shadow-md);margin:.6rem 0}.impulse{background:var(--btc-ink);color:#fff;border-radius:var(--radius-lg);padding:1.4rem 1.5rem;margin-top:1.6rem}.impulse h2{margin:0 0 .7rem;font-size:1.05rem;color:var(--btc-orange)}.impulse li{margin:.35rem 0}.cta{display:inline-block;margin-top:1rem;background:var(--btc-orange);color:#fff;text-decoration:none;font-weight:600;padding:.7rem 1.3rem;border-radius:var(--radius-pill)}.cta:hover{filter:brightness(1.08)}.board{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));align-items:start}.spalte{background:#14142b08;border-radius:var(--radius-lg);padding:.9rem}.spalte h2{font-size:.9rem;text-transform:uppercase;letter-spacing:.07em;color:var(--btc-muted);margin:.2rem .3rem .8rem;display:flex;align-items:center;gap:.45rem}.spalte h2 .ic{width:16px;height:16px}.idee-karte{background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-md);padding:.85rem 1rem;margin-bottom:.7rem;box-shadow:var(--shadow-sm)}.idee-karte h3{margin:0 0 .25rem;font-size:1rem}.idee-karte p{margin:0;color:var(--btc-muted);font-size:.85rem}.leer{color:var(--btc-muted);font-size:.9rem;padding:.4rem .3rem}.werkbank{display:grid;gap:1.2rem;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}@media(max-width:860px){.werkbank{grid-template-columns:1fr}}.chat{background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-lg);display:flex;flex-direction:column;min-height:60vh}.chat__log{flex:1;padding:1.1rem;overflow-y:auto;display:flex;flex-direction:column;gap:.7rem}.msg{max-width:85%;padding:.65rem .95rem;border-radius:var(--radius-lg);white-space:pre-wrap}.msg--ki{background:var(--btc-orange-soft);align-self:flex-start;border-bottom-left-radius:4px}.msg--ich{background:var(--btc-mint);align-self:flex-end;border-bottom-right-radius:4px}.chat__hinweis{font-size:.78rem;color:var(--btc-muted);padding:0 1.1rem .4rem}.chat__form{display:flex;gap:.6rem;border-top:1px solid var(--btc-line);padding:.8rem}.chat__form textarea{flex:1;resize:none;border:1px solid var(--btc-line);border-radius:var(--radius-md);font:inherit;padding:.6rem .8rem;min-height:2.8rem}.chat__form button{border:0;background:var(--btc-orange);color:#fff;font-weight:600;border-radius:var(--radius-md);padding:0 1.2rem;cursor:pointer}.spec{background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-lg);padding:1.1rem 1.3rem}.spec h2{margin:0 0 .2rem;font-size:1.05rem}.spec__hint{color:var(--btc-muted);font-size:.85rem;margin:0 0 .8rem}.spec dl{margin:0}.spec dt{font-weight:600;font-size:.9rem;margin-top:.7rem;color:var(--btc-orange)}.spec dd{margin:.15rem 0 0;font-size:.92rem;white-space:pre-line}.spec dd:empty:after{content:"…";color:var(--btc-line)}.spec__link{font-size:.82rem;background:var(--btc-bg);border:1px dashed var(--btc-line);border-radius:var(--radius-md);padding:.5rem .7rem;margin-top:1rem;word-break:break-all}.spec__link-kopieren{display:block;margin-top:.5rem;border:1px solid var(--btc-line);background:var(--surface);color:var(--btc-ink);font-size:.8rem;font-weight:600;border-radius:var(--radius-pill);padding:.3rem .8rem;cursor:pointer}.spec__link-kopieren:hover{background:var(--btc-orange-soft)}.spec__submit{width:100%;margin-top:1rem;border:0;background:var(--btc-teal);color:#fff;font-weight:700;font-size:1rem;border-radius:var(--radius-md);padding:.8rem;cursor:pointer}.spec__submit:disabled{background:var(--btc-line);cursor:not-allowed}.login{max-width:26rem;margin:3rem auto;text-align:center}.login h1{font-size:clamp(1.5rem,4vw,2rem);margin-bottom:.4rem}.login p{color:var(--btc-muted);margin:0 0 1.4rem}.login__form{display:flex;flex-direction:column;gap:.8rem;text-align:left;background:var(--surface);border:1px solid var(--btc-line);border-radius:var(--radius-lg);padding:1.6rem;box-shadow:var(--shadow-sm)}.login__form label{font-weight:600;font-size:.9rem}.login__form input{border:1px solid var(--btc-line);border-radius:var(--radius-md);padding:.65rem .8rem;font:inherit}.login__form button{border:0;background:var(--btc-orange);color:#fff;font-weight:700;border-radius:var(--radius-md);padding:.75rem;cursor:pointer;font-size:1rem}.login__fehler{color:#c0392b;font-size:.85rem;margin:0}