:root{--brand: #061817;--teal: #0f6e56;--teal-soft: #e1f5ee;--ink: #16201f;--muted: #6b7a77;--hint: #9aa6a3;--line: rgba(6, 24, 23, .12);--bg: #ffffff;--bg-soft: #f4f6f5;--amber-ink: #854f0b;--amber-soft: #faeeda;--red-ink: #a32d2d;--red-soft: #fcebeb;--blue: #185fa5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg-soft);color:var(--ink);-webkit-font-smoothing:antialiased;font-size:14px}button{font-family:inherit;cursor:pointer}.console{display:flex;min-height:100vh;zoom:1.15}.sidebar{width:204px;flex-shrink:0;background:var(--bg);border-right:.5px solid var(--line);padding:16px 0}.brand{padding:4px 18px 16px;font-size:14px;font-weight:600;letter-spacing:.03em}.navlink{display:flex;align-items:center;gap:10px;padding:10px 18px;color:var(--muted);text-decoration:none;font-size:14px;border-left:2px solid transparent}.navlink.active{color:var(--teal);background:var(--bg-soft);border-left-color:var(--teal)}.badge{margin-left:auto;font-size:11px;border-radius:999px;padding:1px 8px}.badge-amber{background:var(--amber-soft);color:var(--amber-ink)}.badge-red{background:var(--red-soft);color:var(--red-ink)}.main{flex:1;padding:18px 24px;min-width:0;background:var(--bg)}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.topbar h1{font-size:18px;font-weight:600;margin:0}.who{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:22px}.mc{background:var(--bg-soft);border-radius:10px;padding:13px 14px}.mc .k{font-size:12px;color:var(--muted)}.mc .v{font-size:22px;font-weight:600;margin-top:4px}.sec{display:flex;justify-content:space-between;align-items:center;margin:0 0 12px}.sec h2{font-size:15px;font-weight:600;margin:0}table{width:100%;border-collapse:collapse}th{font-size:12px;font-weight:400;color:var(--hint);text-align:left;padding:0 10px 10px 0}td{font-size:13px;padding:12px 10px 12px 0;border-top:.5px solid var(--line)}.tag{font-size:11px;border-radius:6px;padding:2px 7px}.tag-amber{background:var(--amber-soft);color:var(--amber-ink)}.tag-teal{background:var(--teal-soft);color:var(--teal)}.tag-red{background:var(--red-soft);color:var(--red-ink)}.btn{border-radius:8px;padding:6px 12px;font-size:12px;border:none}.btn-primary{background:var(--teal);color:#fff}.btn-outline{background:transparent;border:.5px solid var(--line);color:var(--ink)}.btn-danger{background:transparent;border:.5px solid #f09595;color:var(--red-ink)}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.45}.field{width:100%;height:40px;border:1px solid var(--line);border-radius:8px;padding:0 12px;font-size:14px;margin-bottom:12px}.field:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px #0f6e561f}.note{margin-top:14px;padding:11px 14px;background:var(--bg-soft);border-radius:10px;font-size:12px;color:var(--muted);line-height:1.6}.card{background:var(--bg);border:.5px solid var(--line);border-radius:12px;padding:16px}.empty{color:var(--hint);font-size:13px;padding:24px 0;text-align:center}@keyframes xw-spin{to{transform:rotate(360deg)}}.spin{animation:xw-spin 1s linear infinite}.sandbox-page{max-width:1440px}.sandbox-hero{display:grid;grid-template-columns:minmax(0,1fr) 205px;gap:22px;align-items:stretch;padding:26px 28px;margin:0 0 16px;border-radius:16px;color:#ecf7f4;background:radial-gradient(circle at 88% 14%,rgba(97,231,194,.27),transparent 28%),linear-gradient(124deg,#073e37,#0d6354 48%,#14473f);overflow:hidden}.sandbox-hero-copy{max-width:840px}.sandbox-eyebrow{display:flex;gap:7px;align-items:center;color:#a9e9d8;font-size:11px;letter-spacing:.15em;text-transform:uppercase}.sandbox-hero h2{max-width:720px;margin:12px 0 8px;font-size:clamp(25px,3vw,39px);line-height:1.15;letter-spacing:-.035em}.sandbox-hero p{max-width:735px;margin:0;color:#ecf7f4d1;line-height:1.7;font-size:13px}.sandbox-hero-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}.sandbox-hero .btn-primary{display:inline-flex;gap:6px;align-items:center;background:#e3f8f1;color:#075442;text-decoration:none}.sandbox-hero .btn-outline{display:inline-flex;gap:6px;align-items:center;border-color:#e7fbf466;color:#f2fcf9;text-decoration:none}.sandbox-hero-seal{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:3px;padding:19px;border:1px solid rgba(226,253,245,.26);background:#00120f26;border-radius:14px}.sandbox-hero-seal strong{margin-top:5px;font-size:50px;line-height:.9}.sandbox-hero-seal span{font-size:12px}.sandbox-hero-seal small{margin-top:8px;color:#aee8d9;font-size:11px}.sandbox-empty-state{display:flex;flex-direction:column;align-items:center;padding:48px 18px;text-align:center;color:var(--muted)}.sandbox-empty-state h2{margin:14px 0 5px;color:var(--ink);font-size:17px}.sandbox-empty-state p{max-width:560px;margin:0;line-height:1.75}.sandbox-safety-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:16px}.sandbox-safety-card{min-height:105px;padding:14px 15px;border:1px solid var(--line);border-radius:11px;background:#fbfcfb}.sandbox-safety-card span,.sandbox-safety-card small{display:block;color:var(--muted);font-size:11px}.sandbox-safety-card strong{display:block;margin:8px 0 4px;color:#0a6654;font-size:25px}.sandbox-run-card{margin-bottom:16px}.sandbox-muted{color:var(--muted);font-size:12px;line-height:1.55}.sandbox-summary{color:#42514e;line-height:1.65;margin:0 0 14px}.sandbox-fact-grid{display:grid;grid-template-columns:.9fr 1.6fr 1fr;gap:10px;margin-bottom:20px}.sandbox-fact-grid>div{padding:11px 12px;border-left:2px solid #79cdb9;background:#f5faf8}.sandbox-fact-grid span{display:block;margin-bottom:5px;color:var(--muted);font-size:11px}.sandbox-fact-grid strong{display:block;font-size:12px;font-weight:600;line-height:1.55}.sandbox-route{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px;padding-top:16px;border-top:1px solid var(--line)}.sandbox-route-step{position:relative;display:flex;gap:8px;min-width:0;align-items:flex-start}.sandbox-route-dot{position:relative;z-index:1;display:grid;flex:0 0 auto;place-items:center;width:24px;height:24px;border-radius:50%}.sandbox-route-dot.done{background:#d9f4ec;color:#08735c}.sandbox-route-dot.waiting{background:#f7eddb;color:#9b630f}.sandbox-route-step b,.sandbox-route-step span{display:block}.sandbox-route-step b{font-size:12px}.sandbox-route-step span{margin-top:3px;color:var(--muted);font-size:10px;line-height:1.45}.sandbox-route-arrow{position:absolute;right:-6px;top:5px;color:#9ccbbf}.sandbox-two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;margin-bottom:16px}.sandbox-panel h2{display:flex;gap:7px;align-items:center}.sandbox-question-list{display:grid;gap:7px}.sandbox-question{display:grid;grid-template-columns:27px minmax(0,1fr);gap:8px;padding:9px 0;border-bottom:1px solid rgba(6,24,23,.08)}.sandbox-question>span{color:#0b735d;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;padding-top:2px}.sandbox-question b{display:block;font-size:12px;line-height:1.5}.sandbox-question small{display:block;margin-top:3px;color:var(--muted);font-size:10px}.sandbox-proof-note{margin-top:13px;padding:9px 10px;color:#725b37;background:#fbf5e9;border-radius:7px;font-size:11px;line-height:1.65}.sandbox-video-cover{position:relative;min-height:180px;padding:17px;color:#f8faf7;border-radius:12px;background:linear-gradient(137deg,#173f39,#6b927a 58%,#1e5450);overflow:hidden}.sandbox-video-cover>*:not(.sandbox-video-grain){position:relative;z-index:1}.sandbox-video-grain{position:absolute;inset:-40%;background:repeating-linear-gradient(126deg,transparent 0 19px,rgba(255,255,255,.065) 20px 22px);transform:rotate(12deg)}.sandbox-video-cover span{font-size:10px;color:#c7eadc;letter-spacing:.09em}.sandbox-video-cover h3{max-width:245px;margin:45px 0 9px;font-size:24px;line-height:1.16;letter-spacing:-.04em}.sandbox-video-cover small{font-size:10px;color:#f7fffbcc}.sandbox-video-play{position:absolute!important;right:16px;bottom:16px;display:grid;width:35px;height:35px;place-items:center;color:#155448;background:#e3f7f0;border-radius:50%}.sandbox-video-title{margin:14px 0 10px;font-size:13px}.sandbox-scene-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}.sandbox-scene{min-height:86px;padding:8px;background:#f4f8f6;border-radius:7px}.sandbox-scene span,.sandbox-scene b,.sandbox-scene small{display:block}.sandbox-scene span{color:#07836a;font-size:10px}.sandbox-scene b{margin:5px 0;font-size:10px;line-height:1.4}.sandbox-scene small{color:var(--muted);font-size:9px;line-height:1.4}.sandbox-chip-row{display:flex;flex-wrap:wrap;gap:5px;margin-top:11px}.sandbox-chip-row span{padding:3px 6px;color:#247866;background:#e9f7f2;border-radius:999px;font-size:10px}.sandbox-platform-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px}.sandbox-draft{display:grid;grid-template-columns:minmax(0,1fr) minmax(240px,.75fr);gap:7px 24px;padding:17px;margin-bottom:13px;border:1px solid #b5dace;border-radius:11px;background:linear-gradient(105deg,#f2fbf7,#fff)}.sandbox-draft-label{grid-column:1 / -1;color:#0a7c63;font-size:10px;font-weight:600;letter-spacing:.1em;text-transform:uppercase}.sandbox-draft h3{margin:0;font-size:17px;letter-spacing:-.02em}.sandbox-draft p{grid-column:1;margin:0;color:#40524d;font-size:12px;line-height:1.65}.sandbox-draft ol{grid-row:span 2;grid-column:2;margin:0;padding-left:18px;color:#4d5e59;font-size:11px;line-height:1.7}.sandbox-draft li+li{margin-top:5px}.sandbox-draft-bottom{display:flex;grid-column:1 / -1;gap:12px;align-items:flex-start;justify-content:space-between;padding-top:11px;border-top:1px solid rgba(6,24,23,.1);color:#745f3c;font-size:10px;line-height:1.55}.sandbox-draft-bottom code{display:flex;gap:4px;align-items:flex-start;max-width:52%;color:#05735c;font-size:9px;overflow-wrap:anywhere}.sandbox-platform{padding:12px;border:1px solid var(--line);border-radius:9px}.sandbox-platform b,.sandbox-platform span,.sandbox-platform small{display:block}.sandbox-platform b{font-size:12px}.sandbox-platform span{min-height:35px;margin:7px 0;color:#41534f;font-size:11px;line-height:1.45}.sandbox-platform small{min-height:36px;color:var(--muted);font-size:10px;line-height:1.45}.sandbox-link{display:flex;gap:4px;align-items:flex-start;margin-top:9px;padding-top:9px;color:#117963;border-top:1px solid var(--line);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:9px;line-height:1.45;overflow-wrap:anywhere}.sandbox-attribution{display:flex;gap:7px;align-items:flex-start;margin-top:13px;color:#4c5f5a;font-size:11px;line-height:1.6}.sandbox-attribution svg{flex:0 0 auto;margin-top:2px;color:#0a7a61}.sandbox-check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:12px 0}.sandbox-check-list div{display:flex;gap:7px;align-items:center;padding:8px;background:#f7f9f8;border-radius:7px;font-size:11px}.sandbox-check-list svg{color:#ad751e}.sandbox-publish-list{display:grid;gap:7px}.sandbox-publish-row{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}.sandbox-publish-row b,.sandbox-publish-row small{display:block}.sandbox-publish-row b{font-size:12px}.sandbox-publish-row small{max-width:305px;margin-top:4px;color:var(--muted);font-size:10px;line-height:1.5}.sandbox-publish-row>div:last-child{display:flex;flex-direction:column;align-items:flex-end;gap:4px}.sandbox-publish-row code{color:#9a3b3b;font-size:9px}.sandbox-learning-card{display:grid;grid-template-columns:1fr minmax(360px,.9fr);gap:25px;padding:22px}.sandbox-learning-card .sandbox-eyebrow{color:#0d8066}.sandbox-learning-card h2{margin:9px 0 6px;font-size:20px;letter-spacing:-.02em}.sandbox-learning-card p{max-width:560px;margin:0;color:var(--muted);font-size:12px;line-height:1.7}.sandbox-learning-columns{display:grid;grid-template-columns:1fr 1fr;gap:10px}.sandbox-learning-columns>div{padding:12px;border-radius:9px;background:#f4f8f6}.sandbox-learning-columns>div:last-child{background:#fbf4f2}.sandbox-learning-columns span,.sandbox-learning-columns small{display:block}.sandbox-learning-columns span{margin-bottom:8px;color:var(--ink);font-weight:600;font-size:11px}.sandbox-learning-columns small{margin:5px 0;color:var(--muted);font-size:10px;line-height:1.45}.sandbox-history{margin-top:16px}.sandbox-history-row{display:grid;grid-template-columns:155px 1fr auto;width:100%;gap:10px;padding:11px 0;color:var(--ink);text-align:left;background:transparent;border:0;border-top:1px solid var(--line)}.sandbox-history-row.active{color:#04725c}.sandbox-history-row span,.sandbox-history-row small{color:var(--muted);font-size:11px}.sandbox-history-row b{font-size:12px}@media(max-width:1050px){.sandbox-platform-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.sandbox-route{grid-template-columns:1fr}.sandbox-route-arrow{display:none}.sandbox-route-step{padding-bottom:8px}}@media(max-width:780px){.sandbox-hero,.sandbox-two-col,.sandbox-learning-card,.sandbox-draft{grid-template-columns:1fr}.sandbox-safety-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sandbox-fact-grid,.sandbox-platform-grid{grid-template-columns:1fr}.sandbox-draft ol{grid-row:auto;grid-column:auto}.sandbox-draft-bottom{flex-direction:column}.sandbox-draft-bottom code{max-width:100%}.sandbox-video-cover h3{margin-top:28px}.sandbox-history-row{grid-template-columns:1fr;gap:4px}}