.sc451-body{background:radial-gradient(circle at 50% -20%,#fff 0,#f5f6f8 42%,#f5f6f8 100%)}.sc451-page{padding:34px 0 76px}.sc451-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:end;margin:10px 0 18px}.sc451-hero h1{font-size:clamp(38px,6vw,62px);letter-spacing:-.055em;line-height:1;margin:14px 0 10px}.sc451-hero p{max-width:760px;margin:0;color:var(--muted);font-size:17px;line-height:1.52}.sc451-trust{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;min-width:360px}.sc451-trust>div{border:1px solid var(--line);background:rgba(255,255,255,.88);border-radius:15px;padding:12px}.sc451-trust strong,.sc451-trust span{display:block}.sc451-trust strong{font-size:15px}.sc451-trust span{font-size:10px;color:var(--muted);font-weight:800;margin-top:3px}.sc451-calculator{padding:0;overflow:hidden}.sc451-calcbar{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;padding:20px 22px 14px}.sc451-calcbar h2,.sc451-sectionhead h2{margin:8px 0 0;font-size:24px;letter-spacing:-.035em}.sc451-actions{display:flex;gap:7px;flex-wrap:wrap}.sc451-actions button,.sc451-settings button,.sc451-quick button,.sc451-reference button{border:1px solid var(--line);background:#fff;color:var(--text);border-radius:10px;padding:8px 10px;font:inherit;font-size:12px;font-weight:800;cursor:pointer}.sc451-settings{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fafbfc}.sc451-segment{display:inline-flex;padding:3px;border-radius:10px;background:#e8ecf0}.sc451-segment button{border:0;background:transparent;padding:6px 9px}.sc451-segment button.is-active{background:#fff;box-shadow:0 2px 7px rgba(20,24,31,.09)}.sc451-toggle{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:7px 10px;font-size:12px;font-weight:800}.sc451-toggle input{accent-color:#17191d}.sc451-settings #scFraction[aria-pressed=true],.sc451-settings #scLargeText[aria-pressed=true]{background:#17191d;color:#fff;border-color:#17191d}.sc451-settings>span{margin-left:auto;color:var(--muted);font-size:11px;font-weight:800}.sc451-shell{display:grid;grid-template-columns:minmax(0,1.28fr) minmax(360px,.72fr);min-height:540px}.sc451-workspace{display:flex;flex-direction:column;min-width:0;background:#fff;border-right:1px solid var(--line)}.sc451-history{flex:1;min-height:290px;max-height:430px;overflow:auto;padding:12px 0}.sc451-empty{display:grid;place-items:center;text-align:center;min-height:200px;color:var(--muted);padding:30px}.sc451-empty strong{color:#424851;font-size:16px}.sc451-empty span{font-size:12px;max-width:430px;line-height:1.5;margin-top:5px}.sc451-history-row{display:grid;grid-template-columns:32px minmax(0,1fr) minmax(100px,.55fr);gap:10px;align-items:start;padding:11px 17px;border-bottom:1px solid #f0f2f4;cursor:pointer}.sc451-history-row:hover{background:#fafbfc}.sc451-history-row .num{color:#a0a5ad;font-size:11px;font-weight:800;padding-top:3px}.sc451-history-row code{font:600 14px/1.45 ui-monospace,SFMono-Regular,Menlo,monospace;overflow-wrap:anywhere;color:#353a42}.sc451-history-row strong{text-align:right;font:800 15px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace;overflow-wrap:anywhere}.sc451-history-row small{display:block;color:var(--muted);font-size:9px;margin-top:3px;text-align:right}.sc451-active{display:grid;grid-template-columns:32px minmax(0,1fr) minmax(112px,.42fr);gap:10px;align-items:start;padding:14px 17px;border-top:2px solid #cfd5dc;background:#fcfdff}.sc451-line-no{font-weight:900;color:#647180;padding-top:12px}.sc451-expression textarea{width:100%;resize:none;border:0;outline:0;background:transparent;font:700 18px/1.45 ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--text);padding:7px 0;min-height:58px}.sc451-live{text-align:right;min-width:0;padding-top:5px}.sc451-live small{display:block;color:var(--muted);font-size:9px;font-weight:900;letter-spacing:.07em}.sc451-live strong{display:block;font:850 19px/1.35 ui-monospace,SFMono-Regular,Menlo,monospace;overflow-wrap:anywhere;margin-top:3px}.sc451-live button{margin-top:5px;border:0;background:transparent;color:var(--muted);font-size:10px;font-weight:800;cursor:pointer}.sc451-error{margin:0 17px 10px 49px;background:var(--badbg);color:var(--bad);border:1px solid #e5bcbc;border-radius:10px;padding:8px 10px;font-size:12px;font-weight:700}.sc451-hint{padding:9px 17px 12px 49px;color:var(--muted);font-size:10px;border-top:1px solid #f0f2f4}.sc451-hint code{font-weight:800;color:#444b55}.sc451-keypad{background:#f8f9fb;padding:12px}.sc451-padtabs{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;background:#e7ebef;border-radius:10px;padding:3px;margin-bottom:9px}.sc451-padtabs button{border:0;border-radius:8px;background:transparent;padding:8px 5px;font:inherit;font-size:11px;font-weight:850;color:var(--muted);cursor:pointer}.sc451-padtabs button.is-active{background:#fff;color:var(--text);box-shadow:0 2px 7px rgba(20,24,31,.08)}.sc451-pad{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}.sc451-pad button{min-height:47px;border:1px solid #dce1e6;background:#fff;border-radius:10px;color:var(--text);font:800 14px/1 ui-sans-serif,system-ui;cursor:pointer;box-shadow:0 1px 0 rgba(20,24,31,.04)}.sc451-pad button:hover{border-color:#aab2bd;transform:translateY(-1px)}.sc451-pad button:active{transform:translateY(0);background:#eef1f4}.sc451-pad button.fn{background:#f0f3f6}.sc451-pad button.op{background:#e9eef4;font-size:18px}.sc451-pad button.soft{background:#f6f1e7}.sc451-pad button.equals{background:#17191d;color:white;border-color:#17191d}.sc451-pad button.wide{grid-column:span 2}.sc451-pad button.wide2{grid-column:span 2}.sc451-pad-func button{font-size:11px}.sc451-quick{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:11px 16px;border-top:1px solid var(--line);background:#fff}.sc451-quick>span{font-size:10px;color:var(--muted);font-weight:900;letter-spacing:.08em;margin-right:2px}.sc451-quick button{background:#f8f9fb;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.sc451-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}.sc451-feature{box-shadow:none}.sc451-feature h2{font-size:22px;letter-spacing:-.035em;margin:13px 0 7px}.sc451-feature p{margin:0;color:var(--muted);line-height:1.55;font-size:13px}.sc451-demo{display:flex;align-items:center;gap:9px;flex-wrap:wrap;background:#f7f9fb;border:1px solid var(--line);border-radius:12px;padding:11px 12px;margin-top:15px}.sc451-demo code{font:700 12px ui-monospace,SFMono-Regular,Menlo,monospace}.sc451-demo span{color:var(--muted)}.sc451-demo strong{margin-left:auto;font:850 13px ui-monospace,SFMono-Regular,Menlo,monospace}.sc451-reference{margin-top:14px;box-shadow:none}.sc451-sectionhead{display:flex;justify-content:space-between;align-items:start;gap:18px}.sc451-refgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:18px}.sc451-refgrid>div{border:1px solid var(--line);border-radius:13px;padding:13px;background:#fafbfc}.sc451-refgrid h3{font-size:14px;margin:0 0 8px}.sc451-refgrid p{font-size:11px;line-height:1.65;color:var(--muted);margin:0}.sc451-refgrid code{color:#30353d;font-weight:750}.sc451-details{margin-top:14px;box-shadow:none}.sc451-details summary{cursor:pointer;font-weight:850}.sc451-details>div{max-width:850px;padding-top:8px}.sc451-details h2{font-size:17px;margin:18px 0 5px}.sc451-details p{color:var(--muted);line-height:1.58;font-size:13px;margin:0}.sc451-details code{font-weight:800;color:#363c45}.sc451-toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(20px);background:#17191d;color:#fff;border-radius:999px;padding:9px 14px;font-size:12px;font-weight:800;opacity:0;pointer-events:none;transition:.18s;z-index:50}.sc451-toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.sc451-body.sc451-large .sc451-expression textarea{font-size:22px}.sc451-body.sc451-large .sc451-history-row code,.sc451-body.sc451-large .sc451-history-row strong{font-size:17px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.sc451-pad button:focus,.sc451-padtabs button:focus,.sc451-actions button:focus,.sc451-settings button:focus,.sc451-quick button:focus,.sc451-reference button:focus,.sc451-expression textarea:focus{outline:3px solid rgba(123,141,168,.32);outline-offset:2px}
@media(max-width:900px){.sc451-hero{grid-template-columns:1fr}.sc451-trust{min-width:0;max-width:520px}.sc451-shell{grid-template-columns:1fr}.sc451-workspace{border-right:0;border-bottom:1px solid var(--line)}.sc451-history{max-height:330px}.sc451-refgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.sc451-page{padding-top:20px}.sc451-hero h1{font-size:39px}.sc451-hero p{font-size:14px}.sc451-trust{grid-template-columns:1fr 1fr 1fr}.sc451-trust>div{padding:9px}.sc451-trust strong{font-size:12px}.sc451-trust span{font-size:8px}.sc451-calcbar{display:block;padding:15px}.sc451-actions{margin-top:10px}.sc451-settings{padding:9px 12px}.sc451-settings>span{width:100%;margin:0}.sc451-history{min-height:210px;max-height:270px}.sc451-history-row{grid-template-columns:23px minmax(0,1fr);padding:9px 11px}.sc451-history-row strong{grid-column:2;text-align:left;font-size:13px}.sc451-history-row small{text-align:left}.sc451-active{grid-template-columns:23px minmax(0,1fr);padding:11px}.sc451-live{grid-column:2;text-align:left;padding-top:0}.sc451-live strong{font-size:17px}.sc451-error{margin-left:34px}.sc451-hint{padding-left:34px}.sc451-keypad{padding:8px}.sc451-pad{gap:4px}.sc451-pad button{min-height:43px;border-radius:8px;font-size:12px}.sc451-pad-func button{font-size:9px}.sc451-quick{padding:9px}.sc451-quick button{font-size:10px;padding:7px 8px}.sc451-grid{grid-template-columns:1fr}.sc451-refgrid{grid-template-columns:1fr 1fr}.sc451-sectionhead{display:block}.sc451-sectionhead button{margin-top:10px}.sc451-feature{padding:18px}.desktop-primary{display:none!important}}
@media(max-width:390px){.wrap{width:min(100% - 20px,1120px)}.sc451-trust{gap:5px}.sc451-pad button{min-height:41px}.sc451-refgrid{grid-template-columns:1fr}.sc451-settings{gap:5px}.sc451-toggle{padding:6px 8px}}
@media(max-width:620px){
  .sc451-page{padding-top:12px}.sc451-hero{gap:8px;margin:2px 0 10px}.sc451-hero h1{font-size:35px;margin:10px 0 7px}.sc451-hero p{font-size:12.5px;line-height:1.45}.sc451-trust{display:none}
  .sc451-calcbar{padding:12px 14px 10px}.sc451-calcbar h2{font-size:20px;margin-top:6px}.sc451-calcbar .eyebrow{padding:5px 8px;font-size:10px}.sc451-actions{margin-top:8px}.sc451-actions button{padding:7px 9px;font-size:10px}
  .sc451-settings{padding:7px 10px}.sc451-settings button,.sc451-toggle{font-size:10px}.sc451-settings>span{font-size:9px}
  .sc451-history{min-height:72px;max-height:180px;padding:0}.sc451-empty{min-height:72px;padding:12px 16px}.sc451-empty strong{font-size:12px}.sc451-empty span{display:none}
  .sc451-active{padding:8px 10px}.sc451-expression textarea{font-size:16px;min-height:46px}.sc451-live strong{font-size:15px}.sc451-hint{display:none}.sc451-error{margin-bottom:7px}
  .sc451-keypad{padding:7px}.sc451-pad button{min-height:42px}.sc451-quick{padding:7px 8px}
}