:root{--d459-ink:#142033;--d459-muted:#607087;--d459-line:#dce3ec;--d459-card:#fff;--d459-soft:#eef4fb;--d459-accent:#2e5a93;--d459-accent2:#163c6d;--d459-good:#1d6f50;--d459-bad:#a23b3b}
*{box-sizing:border-box}.d459-body{background:#f5f6f8;color:var(--d459-ink)}.d459-page{padding-bottom:56px}.d459-hero{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(280px,.8fr);gap:24px;align-items:end;padding:46px 0 26px}.d459-hero h1{font-size:clamp(2.2rem,5vw,4.25rem);line-height:.96;letter-spacing:-.055em;margin:.25rem 0 .9rem}.d459-hero p{font-size:1.08rem;max-width:760px;color:var(--d459-muted);line-height:1.65}.d459-trust{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.d459-trust div,.d459-metrics div{background:var(--d459-card);border:1px solid var(--d459-line);border-radius:16px;padding:14px}.d459-trust strong{display:block;font-size:1.05rem}.d459-trust span,.d459-metrics small{display:block;color:var(--d459-muted);font-size:.78rem;margin-top:3px}.d459-workbench,.d459-path,.d459-daily,.d459-reference{padding:22px;border:1px solid var(--d459-line);border-radius:24px;background:var(--d459-card);box-shadow:0 12px 35px rgba(20,32,51,.05);margin:0 0 20px}.d459-head,.d459-sectionhead{display:flex;gap:16px;justify-content:space-between;align-items:center}.d459-head h2,.d459-sectionhead h2,.d459-sectionhead h3{margin:.25rem 0 0}.d459-actions{display:flex;gap:8px;flex-wrap:wrap}.d459-actions button,.d459-sectionhead button,.d459-modebar button,.d459-run button{border:1px solid var(--d459-line);background:#fff;color:var(--d459-ink);border-radius:12px;padding:10px 13px;font-weight:700;cursor:pointer}.d459-primary{background:var(--d459-accent)!important;color:#fff!important;border-color:var(--d459-accent)!important}.d459-modebar{display:flex;gap:8px;overflow:auto;padding:16px 0 18px;scrollbar-width:thin}.d459-modebar button{white-space:nowrap}.d459-modebar button.is-active{background:var(--d459-ink);color:#fff;border-color:var(--d459-ink)}.d459-shell{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(340px,.85fr);gap:20px}.d459-inputside,.d459-resultside{min-width:0}.d459-mode{background:#f8fafc;border:1px solid var(--d459-line);border-radius:18px;padding:18px}.d459-grid2,.d459-grid3,.d459-grid4,.d459-grid6,.d459-motiongrid{display:grid;gap:12px;margin-top:15px}.d459-grid2{grid-template-columns:repeat(2,1fr)}.d459-grid3{grid-template-columns:repeat(3,1fr)}.d459-grid4{grid-template-columns:repeat(4,1fr)}.d459-grid6{grid-template-columns:repeat(3,1fr)}.d459-motiongrid{grid-template-columns:repeat(3,1fr)}.d459-geogrid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:15px}.d459-geogrid fieldset{border:1px solid var(--d459-line);border-radius:14px;padding:12px}.d459-geogrid legend{font-weight:800;padding:0 6px}.d459-mode label,.d459-path label,.d459-question label{display:grid;gap:6px;font-size:.82rem;font-weight:800;color:#34445b}.d459-mode input,.d459-mode select,.d459-path textarea,.d459-question input{width:100%;border:1px solid #cbd5e1;border-radius:11px;background:#fff;padding:11px 12px;font:inherit;color:var(--d459-ink)}.d459-mode input:focus,.d459-path textarea:focus,.d459-question input:focus{outline:2px solid rgba(46,90,147,.2);border-color:var(--d459-accent)}.d459-help{font-size:.84rem;line-height:1.5;color:var(--d459-muted);margin:12px 0 0}.d459-callout{background:#edf5ff;border-left:3px solid var(--d459-accent);padding:10px 12px;border-radius:8px}.d459-line-method{display:flex;gap:14px;flex-wrap:wrap;margin:12px 0}.d459-line-method label{display:flex;align-items:center;gap:7px}.d459-line-method input{width:auto}.d459-pair{display:grid;grid-template-columns:1fr auto}.d459-pair input{border-radius:11px 0 0 11px}.d459-pair select{border-left:0;border-radius:0 11px 11px 0;background:#f7f9fc}.d459-run{display:flex;gap:12px;align-items:center;margin-top:14px}.d459-run span{font-size:.78rem;color:var(--d459-muted)}.d459-error{margin-top:10px;padding:10px 12px;border:1px solid #efb7b7;background:#fff3f3;color:var(--d459-bad);border-radius:10px;font-weight:700}.d459-resultside{display:grid;gap:12px;align-content:start}.d459-resultcard{background:linear-gradient(145deg,#17283f,#244c7c);color:#fff;border-radius:20px;padding:22px;min-height:170px}.d459-resultcard .eyebrow{color:#b9cbe2}.d459-resultcard>strong{display:block;font-size:clamp(2.1rem,5vw,3.75rem);letter-spacing:-.04em;margin:.6rem 0 0}.d459-resultcard>p{margin:.2rem 0 1.1rem;color:#d8e4f2}.d459-formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem;line-height:1.5;color:#eef5ff;word-break:break-word}.d459-metrics{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.d459-metrics b{font-size:.95rem;word-break:break-word}.d459-diagram{min-height:240px;border:1px solid var(--d459-line);border-radius:18px;background:linear-gradient(#fff,#f7fafc);overflow:hidden;display:grid;place-items:center}.d459-diagram svg{width:100%;height:240px;display:block}.d459-steps{margin-top:18px;border-top:1px solid var(--d459-line);padding-top:14px}.d459-steps summary{cursor:pointer;font-weight:800}.d459-steps ol{padding-left:22px;line-height:1.65;color:#43526a}.d459-pathgrid{display:grid;grid-template-columns:1fr .8fr;gap:18px;margin-top:16px}.d459-path textarea{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;resize:vertical}.d459-pathout{border:1px solid var(--d459-line);background:#f8fafc;border-radius:16px;padding:18px}.d459-pathout>span{font-size:.72rem;letter-spacing:.1em;font-weight:800;color:var(--d459-muted)}.d459-pathout>strong{display:block;font-size:2.4rem;margin:.25rem 0 1rem}.d459-pathout div{display:grid;gap:6px;font-size:.86rem;color:#4c5a70}.d459-concepts{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:20px}.d459-concepts .panel{padding:20px;border:1px solid var(--d459-line);border-radius:20px;background:#fff}.d459-concepts h2{margin:.3rem 0 .55rem}.d459-concepts p{margin:0;color:var(--d459-muted);line-height:1.55}.d459-question{margin:16px 0;background:#f8fafc;border:1px solid var(--d459-line);border-radius:16px;padding:18px}.d459-question>span{font-size:.72rem;font-weight:900;letter-spacing:.11em;color:var(--d459-accent)}.d459-question h3{font-size:1.25rem;margin:.45rem 0 1rem}.d459-question label{max-width:280px}.d459-question p{color:var(--d459-muted);font-size:.84rem}.d459-hud{display:flex;gap:12px;align-items:center}.d459-hud span{font-size:.8rem;color:var(--d459-muted)}.d459-refgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}.d459-refgrid>div{border:1px solid var(--d459-line);border-radius:14px;padding:14px;background:#fafbfd}.d459-refgrid h3{margin:0 0 6px}.d459-refgrid code{font-size:.78rem;word-break:break-word}.d459-refgrid small{display:block;color:var(--d459-muted);margin-top:6px}.d459-reference details{border-top:1px solid var(--d459-line);padding-top:12px}.d459-reference details p{color:var(--d459-muted);line-height:1.6}.d459-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,18px);opacity:0;pointer-events:none;background:#17283f;color:#fff;padding:10px 14px;border-radius:999px;font-weight:700;font-size:.84rem;transition:.2s;z-index:20}.d459-toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:900px){.d459-hero,.d459-shell{grid-template-columns:1fr}.d459-trust{max-width:620px}.d459-resultside{grid-template-columns:1fr 1fr}.d459-resultcard{grid-column:1/-1}.d459-grid4{grid-template-columns:repeat(2,1fr)}.d459-motiongrid,.d459-refgrid{grid-template-columns:1fr}.d459-pathgrid{grid-template-columns:1fr}.d459-concepts{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.d459-page{padding-left:12px;padding-right:12px}.d459-hero{padding-top:30px}.d459-hero h1{font-size:2.55rem}.d459-trust{grid-template-columns:1fr 1fr}.d459-trust div:last-child{grid-column:1/-1}.d459-workbench,.d459-path,.d459-daily,.d459-reference{padding:15px;border-radius:18px}.d459-head,.d459-sectionhead{align-items:flex-start;flex-direction:column}.d459-actions{width:100%}.d459-actions button{flex:1}.d459-grid3,.d459-grid6,.d459-geogrid{grid-template-columns:1fr 1fr}.d459-grid6 label:nth-child(3),.d459-grid6 label:nth-child(6){grid-column:auto}.d459-resultside{grid-template-columns:1fr}.d459-metrics{grid-template-columns:1fr 1fr}.d459-diagram{min-height:210px}.d459-diagram svg{height:210px}.d459-concepts{grid-template-columns:1fr}.d459-refgrid{grid-template-columns:1fr}.d459-run{align-items:stretch;flex-direction:column}.d459-modebar{margin-left:-15px;margin-right:-15px;padding-left:15px;padding-right:15px}.d459-sectionhead button{width:100%}}
@media(max-width:390px){.d459-grid2,.d459-grid3,.d459-grid4,.d459-grid6{grid-template-columns:1fr}.d459-metrics{grid-template-columns:1fr}.d459-trust{grid-template-columns:1fr}.d459-trust div:last-child{grid-column:auto}}