:root{--bg:#0b1020;--panel:#111a31;--card:#17233f;--text:#ecf3ff;--muted:#a9b7d0;--line:#2c3a5f;--accent:#58c7f3;--accent2:#f45d75;--ok:#61d394;--warn:#ffd166}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:linear-gradient(180deg,#0b1020,#10172a);color:var(--text)}a{color:var(--accent)}.wrap{width:min(1120px,92vw);margin:auto}.site-header{position:sticky;top:0;z-index:10;background:rgba(17,26,49,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}.brand{font-weight:800;text-decoration:none;color:var(--text);font-size:1.15rem}.nav nav{display:flex;gap:16px;flex-wrap:wrap}.nav nav a{text-decoration:none;color:var(--muted);font-size:.95rem}.nav nav a:hover{color:var(--accent)}.hero{display:grid;grid-template-columns:1.5fr .8fr;gap:24px;align-items:center;padding:42px 0 24px}.eyebrow{color:var(--accent);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}.hero h1{font-size:clamp(2rem,5vw,4rem);line-height:1.02;margin:.2em 0}.hero p,.lead{font-size:1.08rem;color:var(--muted);line-height:1.65}.actions{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}.btn{background:var(--accent2);border:0;color:white;text-decoration:none;padding:10px 15px;border-radius:10px;font-weight:700;cursor:pointer;display:inline-block}.btn.secondary{background:transparent;color:var(--accent);border:1px solid var(--accent)}.btn.small{padding:7px 10px;font-size:.86rem}.grid{display:grid;gap:16px}.three{grid-template-columns:repeat(3,1fr)}.card{background:rgba(23,35,63,.96);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 10px 32px rgba(0,0,0,.16)}.warn{border-color:rgba(255,209,102,.7);background:rgba(255,209,102,.08)}.intro-cards{margin:8px 0 22px}.tool{margin-bottom:28px;padding:0;overflow:hidden}.tabs{display:flex;gap:2px;background:#0d1528;border-bottom:1px solid var(--line);overflow:auto}.tab{border:0;background:transparent;color:var(--muted);padding:14px 18px;cursor:pointer;font-weight:700;white-space:nowrap}.tab.active{background:var(--card);color:var(--accent)}.pane{display:none;padding:18px}.pane.active{display:block}.notice{background:rgba(88,199,243,.08);border:1px solid rgba(88,199,243,.35);border-radius:12px;padding:12px;margin-bottom:14px;color:var(--muted);line-height:1.55}.settings,.form-select-area,.builder-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;align-items:end}.form-select-area{grid-template-columns:1fr auto}.settings label,.block{display:block;color:var(--muted);font-size:.88rem}input,select,textarea{width:100%;background:#0a1224;border:1px solid var(--line);color:var(--text);border-radius:10px;padding:10px;margin-top:5px}select{margin:10px 0}.mono,code,pre,textarea.raw{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.raw{min-height:220px}.wide{width:100%}.smalltext{font-size:.85rem}.muted{color:var(--muted)}.form-header{border-bottom:1px solid var(--line);margin-bottom:12px;padding-bottom:10px}.q-block,.p-block,.comment-area,.decoded{background:#101a31;border:1px solid var(--line);border-radius:14px;padding:14px;margin:10px 0}.answers{display:grid;gap:6px}.ans{display:flex;gap:8px;padding:8px;border:1px solid transparent;border-radius:10px}.ans:hover,.ans.selected{background:rgba(88,199,243,.08);border-color:rgba(88,199,243,.35)}.ans-char{font-family:monospace;color:var(--accent);min-width:26px}.out-block{border:1px solid var(--line);border-radius:14px;padding:14px;margin:12px 0}.out-label{font-size:.75rem;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;font-weight:800}.tx-line{font-family:monospace;word-break:break-word;font-size:.95rem;margin:10px 0;color:#dff6ff}.dec-row{display:grid;grid-template-columns:1fr 1.3fr;gap:10px;border-top:1px solid var(--line);padding:8px 0}.dec-q{color:var(--muted)}.repo-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}pre{white-space:pre-wrap;background:#071021;border:1px solid var(--line);border-radius:12px;padding:12px;overflow:auto}footer{border-top:1px solid var(--line);padding:20px 0;color:var(--muted);font-size:.86rem;background:#091022}.page{padding:32px 0}hr{border:0;border-top:1px solid var(--line);margin:18px 0}.builder-item{border:1px solid var(--line);border-radius:14px;padding:12px;margin:10px 0;background:#101a31}.builder-options{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}@media(max-width:800px){.hero,.three,.settings,.builder-grid,.form-select-area{grid-template-columns:1fr}.nav{align-items:flex-start;flex-direction:column}.pane{padding:12px}.dec-row{grid-template-columns:1fr}.hero{padding-top:24px}.actions .btn,.settings .btn,.form-select-area .btn{width:100%;text-align:center}.builder-options{grid-template-columns:1fr}}
.two{grid-template-columns:repeat(2,1fr)}.feature-row{margin:8px 0 22px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:14px}.section-head h2{margin:.1em 0}.video-section{margin:22px 0}.video-card{background:#101a31;border:1px solid var(--line);border-radius:14px;padding:14px}.video-card pre{font-size:.78rem}.video-placeholder{aspect-ratio:16/9;border:1px dashed rgba(88,199,243,.55);border-radius:12px;display:grid;place-items:center;color:var(--muted);background:rgba(88,199,243,.06);font-weight:700;text-align:center;padding:12px}.video-embed{position:relative;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#071021;border:1px solid var(--line)}.video-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.embed-help{margin-top:16px;color:var(--muted)}.embed-help summary{cursor:pointer;color:var(--accent);font-weight:700}
@media(max-width:800px){.two,.section-head{grid-template-columns:1fr;display:grid}.feature-row{grid-template-columns:1fr}.section-head{align-items:start}.video-card pre{font-size:.72rem}}

/* v0.8 layout fixes */
input[type="radio"], input[type="checkbox"]{width:auto;min-width:auto;margin:0;accent-color:var(--accent);}
.ans{align-items:flex-start;display:flex;gap:10px;line-height:1.25;}
.ans input[type="radio"]{flex:0 0 auto;margin-top:2px;}
.ans-char{flex:0 0 26px;text-align:center;}
.ans span:last-child{flex:1;}
.dec-meta{display:flex;flex-wrap:wrap;gap:8px 16px;margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--line);}
.dec-meta span{color:var(--muted);}
.dec-meta strong{color:var(--accent);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}