:root{--ink:#172c3c;--muted:#718190;--line:#e1e7ed;--teal:#157d80;--nav:#152e3f;--bg:#f3f6f9;--purple:#7060a5}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit}header{height:74px;background:var(--nav);display:flex;align-items:center;padding:0 32px;gap:56px;color:white}.logo{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:18px;font-weight:650}.logo small{display:block;font-size:9px;letter-spacing:1.7px;color:#a3becb;font-weight:400}.mark{font-size:32px;color:#82d0c8}nav{display:flex;height:100%;gap:32px}.nav{background:none;border:0;border-bottom:3px solid transparent;color:#9eb5c3;padding:0 3px;font-size:13px}.nav.active{color:#fff;border-bottom-color:#82d0c8}.prototype{margin-left:auto;border:1px solid #527081;border-radius:5px;padding:3px 11px;color:#cadbe5;font-size:11px}.demo-bar{padding:9px 32px;background:#fffaea;color:#8b692f;font-size:12px;border-bottom:1px solid #eee2c8}.demo-bar b{border:1px solid #e8d4a5;padding:1px 6px;margin-right:10px;border-radius:4px;font-size:10px}.workspace{display:grid;grid-template-columns:360px minmax(0,1fr);gap:28px;max-width:1640px;margin:auto;padding:26px 32px}aside{border:1px solid var(--line);border-radius:12px;background:white;align-self:start;overflow:hidden}.input-title{display:flex;align-items:center;justify-content:space-between;padding:22px 22px 18px;border-bottom:1px solid var(--line)}.eyebrow{font-size:10px;letter-spacing:1.5px;color:var(--teal);font-weight:600}h1{font-size:28px;line-height:1.4;margin:6px 0 10px;letter-spacing:-.6px}h2{font-size:20px;line-height:1.4;margin:5px 0 14px}h3{font-size:14px;margin:0 0 15px}.input-title h2{font-size:17px;margin:4px 0 0}form section{padding:20px 22px;border-bottom:1px solid #edf0f3}h3 i{font-style:normal;font-size:10px;background:#eef6f6;color:var(--teal);padding:3px 5px;border-radius:4px;margin-right:7px}label{display:block;font-size:12px;font-weight:550;color:#4f6473;margin:12px 0 6px}label span{font-size:10px;color:#8596a3;font-weight:400}input:not([type=checkbox]),select,textarea{width:100%;border:1px solid #d7e0e7;padding:9px 10px;min-height:39px;border-radius:6px;color:var(--ink);background:#fff;font-size:12px}textarea{resize:vertical}input:focus,select:focus,textarea:focus{outline:2px solid #88c8c9;outline-offset:1px}input[type=checkbox]{accent-color:var(--teal)}.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}.hint{font-size:10px;line-height:1.7;color:#8694a0;margin:7px 0 0}.mini-chain{margin-top:13px;display:flex;align-items:center;justify-content:center;gap:6px;font-size:10px}.mini-chain span{border-radius:4px;background:#eff5f7;padding:5px 10px}.mini-chain i{height:1px;background:#a5bcc4;width:15px}details{padding:10px 0}summary{font-size:12px;font-weight:600;cursor:pointer;color:#435e6e}.mini-tag{float:right;color:#8694a0;font-size:10px;font-weight:400}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 4px}.check-grid label{display:flex;align-items:center;gap:5px;font-size:11px;font-weight:400}.submit{padding:20px 22px;background:#fcfdfe}.primary{background:var(--teal);color:#fff;border:0;border-radius:6px;padding:12px 20px;font-weight:600}.submit .primary{width:100%;display:flex;justify-content:space-between}.submit-foot{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-size:10px;color:var(--muted)}.text-button{border:0;background:none;color:var(--teal);padding:0;font-size:11px}.secondary{background:white;border:1px solid #cad8df;border-radius:6px;color:#496675;padding:9px 14px;font-size:12px}.main-title{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:6px 0 25px}.main-title p{margin:0;color:var(--muted);font-size:13px}.status{white-space:nowrap;padding:5px 10px;border-radius:5px;background:#e7edf2;color:#677d8c;font-size:11px}.card{background:white;border:1px solid var(--line);border-radius:12px;padding:26px;margin-bottom:20px;box-shadow:0 3px 12px #1e3d5203}.card.hero{border-top:3px solid var(--teal)}.row{display:flex;align-items:center;justify-content:space-between;gap:14px}.badge{display:inline-block;background:#e8f6f1;color:#22795f;border-radius:4px;padding:4px 8px;font-size:10px;font-weight:600}.muted{color:var(--muted)}.small{font-size:11px}.hero h2{font-size:25px;margin-top:14px}.description{color:#526978;font-size:13px;line-height:1.8}.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:22px 0}.metric{border:1px solid #e2e9ee;background:#f8fafc;border-radius:8px;padding:16px}.metric small{display:block;color:var(--muted);font-size:11px}.metric b{display:block;font-size:29px;line-height:1.6;font-weight:650;font-variant-numeric:tabular-nums}.metric b em{font-style:normal;font-size:13px;color:#6e8594;font-weight:400}.metric .delta{font-size:11px;color:var(--teal)}.target-line{display:flex;justify-content:space-between;font-size:10px;color:#6c808d;margin-top:14px;padding-top:10px;border-top:1px solid #e0e8ec}.pass{color:#19775f}.fail{color:#a06428}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.chain-area{display:grid;grid-template-columns:1fr 25px 1fr;align-items:center;gap:14px;padding:20px 0}.chain{display:flex;align-items:center;justify-content:center;gap:0;margin:10px 0}.block{padding:13px 10px;background:#edf5f8;border:1px solid #c7dce5;border-radius:7px;text-align:center;min-width:85px;flex:1;max-width:150px}.block.poly{background:#f2eff8;border-color:#d9d1e9}.block.changed{border:2px solid #3c9992}.block b{display:block;font-size:13px}.block small{font-size:11px;color:#68808f}.bond{width:18px;height:1px;background:#94acb7;flex:none}.arrow{color:#92a6b2;text-align:center}.change-summary{background:#f1f8f7;border-radius:7px;padding:12px 16px;color:#3e706b;font-size:12px}.chips{display:flex;gap:7px;flex-wrap:wrap;margin-top:13px}.chips span{background:#f1f4f7;color:#627b8a;border-radius:4px;padding:4px 8px;font-size:10px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:12px}th{background:#f6f9fb;color:#6c8291;font-weight:500;text-align:left;padding:12px}td{padding:15px 12px;border-bottom:1px solid #edf1f4;white-space:nowrap}tr.selected{background:#f0f8f6}.select-result{background:none;color:var(--teal);border:0;padding:4px;font-size:12px}dl{margin:15px 0}.receipt{display:grid;grid-template-columns:1fr 1fr;gap:13px 24px}dt{color:var(--muted);font-size:11px}dd{margin:3px 0 0;font-size:12px;overflow-wrap:anywhere}.empty{padding:30px}.empty-visual{display:flex;justify-content:center;align-items:center;height:150px;background:linear-gradient(120deg,#f0f7f8,#f4f1fa);border-radius:8px;margin:22px 0}.empty-visual .block{max-width:150px;padding:20px}.outputs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:25px}.outputs b{display:block;font-size:12px}.outputs p{font-size:11px;color:var(--muted);margin:5px 0}.notice{background:#fff5de;color:#86632e;padding:12px 16px;border:1px solid #ecdcbb;border-radius:8px;margin-bottom:16px;font-size:12px}.hidden{display:none!important}.gap-panel{max-width:1350px;padding:32px;margin:auto}.gap-panel td{white-space:normal;vertical-align:top;line-height:1.9}.gap-panel th{white-space:nowrap}.scope-note{font-size:11px;color:#82949f;border-top:1px solid #e5ebef;padding-top:15px}.foot-label{font-size:10px;color:#8d9ba4;text-align:right;margin-top:10px}.gap-status{font-size:10px;display:inline-block;background:#edf4f6;padding:2px 6px;border-radius:4px}.error-card{border-left:3px solid #b58a45}.focus-note{padding:12px 16px;background:#eef5f8;border-radius:6px;font-size:12px;margin:15px 0}button:focus-visible{outline:2px solid #71b8bb;outline-offset:3px}@media(max-width:1150px){.workspace{padding:20px;gap:20px;grid-template-columns:320px minmax(0,1fr)}header{padding:0 22px;gap:30px}.metrics{gap:8px}.metric{padding:12px}.metric b{font-size:24px}.card{padding:20px}.chain-area{grid-template-columns:1fr}.chain-area .arrow{transform:rotate(90deg)}}@media(max-width:780px){header{height:auto;min-height:74px;flex-wrap:wrap;gap:10px;padding:12px 18px}.prototype{font-size:9px}nav{order:3;width:100%;gap:25px}.nav{padding:8px 0}.demo-bar{padding:10px 18px}.workspace{grid-template-columns:1fr;padding:16px;gap:20px}.main-title{align-items:start}h1{font-size:24px}.metrics{grid-template-columns:1fr}.metric b{font-size:28px}.outputs{grid-template-columns:1fr}.receipt{grid-template-columns:1fr}.gap-panel{padding:20px 16px}.status{font-size:9px}.card{padding:20px}.row{flex-wrap:wrap}}@media print{header,.demo-bar,aside,.actions,nav,.notice,.select-result,.main-title .status{display:none!important}.workspace{display:block;padding:0}.card{break-inside:avoid;box-shadow:none}body{background:white}.foot-label{display:block}}

.top-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.top-actions .primary{padding:9px 14px;font-size:12px}@media(max-width:780px){.main-title{flex-wrap:wrap}.top-actions{width:100%;justify-content:space-between}}

.decision-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;padding:12px 0 20px}.decision-grid small{color:var(--teal);font-size:11px}.decision-grid h3{font-size:16px;margin:8px 0}.decision-grid p{font-size:12px;color:#526978;margin:6px 0 14px}.constraint-check{margin-top:18px;padding:16px;background:#f4f8fa;border-radius:8px;font-size:12px}.constraint-check p{margin:6px 0;color:#526978}@media(max-width:780px){.decision-grid{grid-template-columns:1fr;gap:4px}}

/* Same complete layout; capability status never removes a product field. */
input:disabled,select:disabled,textarea:disabled{background:#edf2f5;color:#657786;cursor:not-allowed;opacity:1}
button:disabled{opacity:.5;cursor:wait}
.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:600px){.metrics{grid-template-columns:1fr}}
.structure-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}.structure-grid>div{background:#fff;border:1px solid #dce5ec;border-radius:12px;padding:12px}.structure-grid svg{width:100%;height:auto;display:block}.structure-grid b{font-size:14px;color:#617485}@media(max-width:800px){.structure-grid{grid-template-columns:1fr}}
.actions a{display:inline-flex;align-items:center;text-decoration:none;cursor:pointer}
/* Generic block editor: chemistry identities are values, not layout roles. */
.block-form{border:1px solid var(--line);border-radius:8px;padding:13px;margin-top:14px;background:#fafcfd}.block-heading{display:flex;justify-content:space-between;gap:8px;color:var(--teal);font-size:12px}.block-heading span{font-size:10px;color:var(--muted)}.scope-status{padding:10px;background:#eef6f4;border:1px solid #d2e7df;border-radius:6px;font-size:11px;margin-bottom:14px;color:#356c5e}.scope-status.unavailable{background:#fff9eb;border-color:#efdfbc;color:#846534}.mini-chain{overflow-x:auto;justify-content:flex-start}.chain{min-width:0;overflow-x:auto;justify-content:flex-start}.mini-chain .block{min-width:80px;padding:8px 5px}.empty-visual>.chain{padding:20px;width:100%;justify-content:center}.block b{overflow-wrap:anywhere}.workspace{grid-template-columns:390px minmax(0,1fr)}@media(max-width:1100px){.workspace{grid-template-columns:340px minmax(0,1fr)}}@media(max-width:780px){.workspace{grid-template-columns:1fr}}

fieldset{border:0;padding:0;margin:0;min-width:0} fieldset.hidden{display:none}

.result-details{border-top:1px solid var(--line);padding:14px 0;margin:0 0 20px}.result-details-body{max-width:850px;color:#526978;font-size:12px;overflow-wrap:anywhere}.result-details-body p{margin:10px 0}