.calc-app{--calc-bg: linear-gradient(180deg, #f8fafc 0%, #eef6fb 100%);--calc-surface: rgba(255, 255, 255, .96);--calc-surface-strong: #ffffff;--calc-panel: #0f172a;--calc-panel-soft: #1e293b;--calc-ink: #0f172a;--calc-muted: #64748b;--calc-accent: #0f766e;--calc-accent-strong: #0f766e;--calc-operator: #1d4ed8;--calc-operator-soft: #dbeafe;--calc-operator-ink: #1e40af;--calc-number: #fffefb;--calc-number-border: rgba(148, 163, 184, .18);--calc-function: #ecfdf5;--calc-function-ink: #047857;--calc-utility: #e2e8f0;--calc-utility-ink: #334155;--calc-danger: #dc2626;--calc-danger-soft: #fee2e2;--calc-shadow: 0 18px 42px rgba(15, 23, 42, .1);--calc-outline: rgba(14, 165, 233, .2);background:var(--calc-bg);color:var(--calc-ink)}.calc-app-shell{max-width:74rem;margin:0 auto;padding:.75rem 1rem 0}.calc-app-shell.contrast-high{--calc-surface: rgba(255, 255, 255, .98);--calc-surface-strong: #ffffff;--calc-panel: #020617;--calc-panel-soft: #111827;--calc-ink: #020617;--calc-muted: #334155;--calc-number-border: rgba(15, 23, 42, .22);--calc-outline: rgba(14, 165, 233, .35)}.calc-app-shell.contrast-reverse{--calc-bg: radial-gradient(circle at top left, rgba(14, 165, 233, .18), transparent 26%), linear-gradient(180deg, #020617 0%, #111827 100%);--calc-surface: rgba(15, 23, 42, .92);--calc-surface-strong: rgba(15, 23, 42, .98);--calc-panel: #f8fafc;--calc-panel-soft: #e2e8f0;--calc-ink: #f8fafc;--calc-muted: #cbd5e1;--calc-number: #111827;--calc-number-border: rgba(255, 255, 255, .16);--calc-function: #452c00;--calc-function-ink: #fef3c7;--calc-utility: #1f2937;--calc-utility-ink: #e2e8f0}.calc-app-shell.scale-large .calc-display-value{font-size:clamp(2.7rem,6.8vw,4.25rem)}.calc-app-shell.scale-large .calc-key-label{font-size:1rem}.calc-app-shell.scale-large .calc-expression-token,.calc-app-shell.scale-large .calc-equation{font-size:.98rem}.calc-hero-panel{display:grid;gap:.58rem;margin-bottom:.62rem}.calc-hero-actions{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:.5rem}.calc-tool-nav{margin:0 -.2rem;padding:0 .2rem;min-width:0}.calc-tool-nav-track{display:flex;flex-wrap:wrap;gap:.42rem;width:100%;min-height:2.35rem;padding-bottom:.1rem}.calc-tool-nav-link{display:inline-flex;align-items:center;gap:.34rem;padding:.52rem .72rem;border-radius:.78rem;background:#ffffffe0;box-shadow:inset 0 0 0 1px #94a3b833;color:var(--calc-muted);font-size:.8rem;font-weight:800;text-decoration:none;white-space:nowrap;transition:transform .18s ease,background .18s ease,color .18s ease}.calc-tool-nav-link:hover{transform:translateY(-1px)}.calc-tool-nav-link.is-active{background:#0f172a;color:#fff}.calc-tool-nav-link.is-secondary{background:#f0fdfaf5;color:var(--calc-ink)}.calc-hero-copy{display:grid;gap:.22rem;max-width:48rem}.calc-hero-eyebrow{margin:0;text-transform:uppercase;letter-spacing:.18em;font-size:.72rem;font-weight:800;color:#0f766e}.calc-hero-title{margin:0;font-size:clamp(1.62rem,3.4vw,2.25rem);line-height:1.06;font-weight:850}.calc-hero-intro{margin:0;color:var(--calc-muted);font-size:.9rem;line-height:1.48}.calc-switch{display:inline-flex;gap:.4rem;padding:.3rem;border-radius:999px;background:#ffffffc2;box-shadow:inset 0 0 0 1px #94a3b82e;width:fit-content}.calc-switch-link{text-decoration:none;color:var(--calc-muted);font-weight:800;font-size:.94rem;padding:.68rem .98rem;border-radius:999px;transition:background .18s ease,color .18s ease,transform .18s ease}.calc-switch-link:hover{transform:translateY(-1px)}.calc-switch-link.is-active{color:#fff;background:var(--calc-panel)}.calc-workbench{display:grid;gap:1rem;grid-template-columns:minmax(0,1fr);align-items:start}.calc-workbench.has-history{grid-template-columns:minmax(0,1.36fr) minmax(18rem,.72fr)}.calc-machine,.calc-history-panel{border-radius:1.1rem;background:var(--calc-surface);box-shadow:var(--calc-shadow);backdrop-filter:blur(18px)}.calc-machine{padding:.75rem}.calc-machine-basic,.calc-machine-scientific{background:#fffffff5}.calc-loading{min-height:16rem;display:grid;place-items:center;color:var(--calc-muted);font-weight:800}@media(max-width:1199px){.calc-history-panel{position:static}.calc-workbench.has-history{grid-template-columns:1fr}}@media(max-width:640px){.calc-app-shell{padding:clamp(.56rem,calc(.46rem + .7vw),.66rem) clamp(.7rem,calc(.58rem + .5vw),.75rem) 0}.calc-hero-panel{gap:clamp(.34rem,calc(.24rem + .7vw),.42rem);margin-bottom:clamp(.36rem,calc(.26rem + .7vw),.44rem)}.calc-hero-actions{grid-template-columns:minmax(0,1fr) auto;gap:.36rem}.calc-hero-copy{gap:clamp(.18rem,calc(.1rem + .5vw),.24rem)}.calc-hero-title{font-size:clamp(1.42rem,calc(1.2rem + 1vw),1.68rem)}.calc-machine,.calc-history-panel{border-radius:1.25rem}.calc-machine,.calc-history-panel{padding:clamp(.72rem,calc(.56rem + .9vw),.78rem)}.calc-switch{width:100%;justify-content:stretch;padding:clamp(.24rem,calc(.14rem + .6vw),.3rem);gap:clamp(.28rem,calc(.14rem + .8vw),.4rem)}.calc-switch-link{flex:1;text-align:center;padding:clamp(.58rem,calc(.48rem + .5vw),.62rem) clamp(.68rem,calc(.56rem + .8vw),.75rem);font-size:clamp(.88rem,calc(.82rem + .3vw),.91rem)}.calc-hero-intro{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:1;overflow:hidden;font-size:clamp(.84rem,calc(.78rem + .3vw),.9rem)}.calc-tool-nav-track{display:inline-flex;flex-wrap:nowrap;gap:.38rem;width:max-content}.calc-tool-nav{overflow-x:auto}.calc-tool-nav-link{padding:.5rem .66rem;font-size:.76rem}}@media(max-width:640px)and (max-height:740px){.calc-app-shell{padding:.65rem .7rem 0}.calc-hero-panel{gap:.36rem;margin-bottom:.42rem}.calc-hero-copy{gap:.16rem}.calc-hero-eyebrow{display:none}.calc-hero-title{font-size:clamp(1.56rem,7vw,1.9rem)}.calc-hero-intro{-webkit-line-clamp:1;font-size:.9rem;line-height:1.35}.calc-switch{padding:.2rem;gap:.24rem}.calc-switch-link{padding:.52rem .62rem;font-size:.86rem}.calc-machine,.calc-history-panel{padding:.68rem;border-radius:1.1rem}}.calc-machine-tool{background:linear-gradient(180deg,#fffffff0,#f8fafcf0)}.calc-tool-stack{display:grid;gap:.72rem}.calc-tool-grid{display:grid;gap:.72rem;grid-template-columns:repeat(2,minmax(0,1fr))}.calc-tool-card{border-radius:.95rem;border:1px solid rgba(148,163,184,.22);background:var(--calc-surface-strong);padding:.86rem;box-shadow:0 12px 30px #0f172a12}.calc-tool-card-accent{background:linear-gradient(135deg,#14b8a61f,#fffffff0 60%)}.calc-tool-intro{margin:0;color:var(--calc-muted);line-height:1.6}.calc-tool-actions{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.6rem}.calc-form-grid,.calc-fraction-grid{display:grid;gap:.64rem}.calc-form-grid,.calc-fraction-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.calc-field{display:grid;gap:.4rem}.calc-field>span{font-size:.78rem;font-weight:800;color:var(--calc-muted)}.calc-field input,.calc-field select{width:100%;min-height:2.78rem;border-radius:.72rem;border:1px solid rgba(148,163,184,.22);background:#fff;padding:.78rem .92rem;color:var(--calc-ink);font:inherit}.calc-field input[aria-invalid=true],.calc-field select[aria-invalid=true]{border-color:#dc262694;background:#fff7f7;box-shadow:0 0 0 3px #dc26261a}.calc-field-inline{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.5rem;align-items:center}.calc-input-suffix{font-weight:800;color:var(--calc-muted)}.calc-chip-subtle{background:#f8fafceb;color:var(--calc-muted)}.calc-helper{margin:.75rem 0 0;color:var(--calc-muted);line-height:1.6}.calc-quick-category-row{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:.72rem}.calc-result-card{display:grid;gap:.6rem;align-content:start}.calc-result-label,.calc-section-heading{margin:0;font-size:.78rem;font-weight:800;color:var(--calc-muted);letter-spacing:.04em;text-transform:uppercase}.calc-result-value{font-size:clamp(1.76rem,4.4vw,2.45rem);line-height:1;font-weight:850;color:var(--calc-ink)}.calc-result-value.is-fraction{display:inline-flex;align-items:center;justify-content:center}.calc-result-meta{display:flex;justify-content:space-between;gap:.8rem;align-items:center;color:var(--calc-muted);font-size:.9rem}.calc-validation-message{margin:0;border-radius:.72rem;background:var(--calc-danger-soft);color:#991b1b;padding:.66rem .72rem;font-size:.86rem;font-weight:800;line-height:1.45}@media(max-width:900px){.calc-tool-grid,.calc-form-grid,.calc-fraction-grid{grid-template-columns:minmax(0,1fr)}}@media(max-width:640px){.calc-tool-card{padding:.76rem}}.calc-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}.calc-view-controls{display:grid;gap:.6rem}.calc-view-controls-compact{position:relative;display:inline-flex;gap:0}.calc-display-settings-button{min-width:2.7rem;min-height:2.7rem;border:0;border-radius:999px;padding:0;display:inline-flex;align-items:center;justify-content:center;background:#ffffff1f;color:#fff;cursor:pointer;font-weight:800;letter-spacing:-.02em;box-shadow:inset 0 0 0 1px #ffffff1a;transition:transform .14s ease,background .14s ease,box-shadow .14s ease;touch-action:manipulation}.calc-display-settings-button:hover{transform:translateY(-1px);background:#ffffff29}.calc-display-settings-button.is-open{background:#fff3;box-shadow:inset 0 0 0 1px #ffffff29}.calc-view-popover{position:absolute;top:calc(100% + .45rem);right:0;z-index:12;width:min(20rem,calc(100vw - 2rem));padding:.8rem;border-radius:1rem;background:#0f172af5;box-shadow:0 18px 40px #0f172a42,inset 0 0 0 1px #ffffff14;backdrop-filter:blur(18px);display:grid;gap:.55rem}.calc-view-popover .calc-view-group{gap:.28rem}.calc-view-popover .calc-view-label{color:#e2e8f0d1}.calc-view-popover .calc-segmented{gap:.34rem}.calc-display-preferences{margin-left:.06rem}.calc-display-preferences-inline{justify-self:end}.calc-display-preferences-inline .calc-display-settings-button{background:#fff;color:#0f172a;box-shadow:inset 0 0 0 1px #94a3b838,0 8px 18px #0f172a14}.calc-display-preferences-inline .calc-display-settings-button:hover,.calc-display-preferences-inline .calc-display-settings-button.is-open{background:#eff6ff;color:#1d4ed8}.calc-display-card-basic .calc-display-settings-button{background:#ffffff14;box-shadow:inset 0 0 0 1px #ffffff14}.calc-display-card-basic .calc-display-settings-button:hover{background:#ffffff1f}.calc-view-group{display:grid;gap:.34rem}.calc-view-label{font-size:.72rem;font-weight:800;color:var(--calc-muted);letter-spacing:.04em;text-transform:uppercase}.calc-display-card{background:linear-gradient(180deg,var(--calc-panel) 0%,var(--calc-panel-soft) 100%);color:#fff;border-radius:1rem;padding:.78rem .82rem .72rem;margin-bottom:.5rem}.calc-mode-tabs,.calc-chip-row,.calc-segmented{display:flex;flex-wrap:wrap;gap:.5rem}.calc-mode-tab,.calc-chip,.calc-segment{border:0;border-radius:999px;background:#ffffffd1;color:var(--calc-ink);cursor:pointer;font-weight:700;transition:transform .16s ease,background .16s ease,color .16s ease}.calc-mode-tab,.calc-segment{padding:.58rem .82rem}.calc-chip{padding:.56rem .8rem;font-size:.82rem;box-shadow:inset 0 0 0 1px #94a3b82e}.calc-chip:hover,.calc-mode-tab:hover,.calc-segment:hover{transform:translateY(-1px)}.calc-mode-tab:disabled,.calc-segment:disabled,.calc-chip:disabled{cursor:not-allowed;opacity:.48;transform:none}.calc-mode-tab.is-active,.calc-segment.is-active,.calc-chip.is-active,.calc-chip-ans.is-active{background:var(--calc-panel);color:#fff}.calc-chip-ans{min-height:2rem}.calc-result-mode-switch{display:grid;gap:.34rem}.calc-result-mode-switch-compact{min-width:0}.calc-copy-control{display:inline-flex;align-items:center}.calc-copy-button{min-height:2.3rem;white-space:nowrap}.calc-copy-button.is-success{background:#22c55e2e;color:#dcfce7}.calc-copy-button.is-failure{background:#f871712e;color:#fee2e2}.calc-result-mode-label{font-size:.72rem;font-weight:800;color:#e2e8f0d1;letter-spacing:.04em;text-transform:uppercase}.calc-stacked-fraction{display:inline-flex;align-items:center;justify-content:center}.calc-stacked-fraction-inner{display:inline-flex;align-items:center;gap:.18em}.calc-stacked-fraction-sign{font-size:.72em;font-weight:900;line-height:1;transform:translateY(-.14em)}.calc-stacked-fraction-body{display:inline-grid;justify-items:center;min-width:min(6ch,100%)}.calc-stacked-fraction-numerator,.calc-stacked-fraction-denominator{font-size:.7em;line-height:1.05;font-variant-numeric:tabular-nums;white-space:nowrap}.calc-stacked-fraction-bar{width:100%;min-width:1.5em;border-top:.085em solid currentColor;margin:.12em 0 .1em}.calc-exact-result{display:inline-flex;align-items:center;justify-content:center;font-family:SFMono-Regular,Cascadia Code,Menlo,monospace;font-variant-numeric:tabular-nums;white-space:nowrap}.calc-exact-result-symbolic{letter-spacing:-.03em}.calc-display-meta{display:flex;justify-content:space-between;gap:.8rem;align-items:center;color:#e2e8f0e6;font-size:.78rem}.calc-display-meta-actions{display:inline-flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:.55rem;margin-left:auto}.calc-display-meta-secondary{margin-top:.6rem}.calc-display-result-row{justify-content:flex-start}.calc-keyboard-hint{display:inline-flex;align-items:center;max-width:28rem;padding:.3rem .65rem;border-radius:999px;background:#ffffff14;color:#e2e8f0e6}.calc-display-edit-button{min-width:3rem;min-height:3rem;border:0;border-radius:999px;padding:0;display:inline-flex;align-items:center;justify-content:center;background:#ffffff1a;color:#fff;cursor:pointer;transition:transform .14s ease,background .14s ease,box-shadow .14s ease;box-shadow:inset 0 0 0 1px #ffffff1a}.calc-display-edit-button:hover{transform:translateY(-1px);background:#ffffff29}.calc-display-edit-button.is-pressed{transform:translateY(1px) scale(.985);background:#fff3}.calc-expression-editor{display:flex;flex-wrap:wrap;gap:.42rem;align-items:center;min-height:3rem;margin-top:.5rem;padding:.48rem .52rem;border-radius:1rem;background:#ffffff1f;box-shadow:inset 0 0 0 1px #ffffff1a}.calc-expression-slot{width:.45rem;min-height:2.15rem;border:0;background:transparent;border-radius:999px;cursor:pointer;position:relative}.calc-expression-slot.is-active:before,.calc-expression-token.has-caret-after:after{content:"";position:absolute;width:2px;height:1.45rem;background:#fbbf24;border-radius:999px;top:50%;transform:translateY(-50%);box-shadow:0 0 0 3px #fbbf2429}.calc-expression-slot.is-active:before{left:50%;transform:translate(-50%,-50%)}.calc-expression-token{position:relative;border:0;border-radius:.8rem;padding:.44rem .58rem;cursor:pointer;font:inherit;font-weight:800;color:#fff;background:#ffffff24;font-family:SFMono-Regular,Cascadia Code,Menlo,monospace;font-size:.96rem;line-height:1.1;box-shadow:inset 0 0 0 1px #ffffff14}.calc-expression-token.has-caret-after:after{right:-.34rem}.calc-expression-token-number{background:#ffffff38}.calc-expression-token-function,.calc-expression-token-constant{color:#fef08a}.calc-expression-token-operator,.calc-expression-token-percent{color:#bfdbfe}.calc-expression-token-paren{color:#ffffffeb}.calc-expression-placeholder{color:#e2e8f0bd;font-family:SFMono-Regular,Cascadia Code,Menlo,monospace}.calc-equation{min-height:1.5rem;margin-top:.42rem;color:#e2e8f0f0;font-size:1.02rem;line-height:1.45;overflow-x:auto;overflow-y:hidden;white-space:nowrap;font-family:SFMono-Regular,Cascadia Code,Menlo,monospace;scrollbar-width:none}.calc-equation::-webkit-scrollbar{display:none}.calc-equation-basic{min-height:1.3rem}.calc-equation-scientific{min-height:2rem}.calc-display-value{margin-top:.28rem;font-size:clamp(2.2rem,5.4vw,3.35rem);line-height:1;font-weight:850;font-family:SFMono-Regular,Cascadia Code,Menlo,monospace;letter-spacing:-.04em;overflow-x:auto;white-space:nowrap;scrollbar-width:none}.calc-display-value-result{margin-top:.28rem}.calc-display-value.is-exact{letter-spacing:-.02em}.calc-display-value::-webkit-scrollbar{display:none}.calc-display-value.is-compact{font-size:clamp(2rem,5.2vw,3rem);letter-spacing:-.03em}.calc-display-value.is-tight{font-size:clamp(1.65rem,4.4vw,2.4rem);letter-spacing:-.02em}.calc-display-error{min-height:1.25rem;margin-top:.36rem;line-height:1.25rem;color:#fdba74;font-size:.84rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:0;transition:opacity .18s ease}.calc-display-error.is-visible{opacity:1}.calc-display-toolbar{display:flex;justify-content:space-between;flex-wrap:wrap;align-items:center;margin-top:.55rem;gap:.75rem}.calc-display-toolbar-basic{justify-content:flex-start}.calc-display-toolbar-basic .calc-result-mode-switch{min-width:0}.calc-display-toolbar-primary{display:inline-flex;align-items:center;flex-wrap:wrap;gap:.55rem}.calc-display-toolbar-scientific{display:grid;justify-content:stretch;gap:.42rem}.calc-display-toolbar-scientific .calc-display-toolbar-primary{justify-content:space-between}.calc-display-toolbar-group{display:inline-flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:.55rem;margin-left:auto}.calc-chip-row-compact{align-items:center}.calc-angle-switch{display:inline-flex;align-items:center;justify-content:space-between;gap:.46rem;padding:.28rem;border-radius:999px;background:#ffffff14;box-shadow:inset 0 0 0 1px #ffffff14}.calc-angle-options{display:inline-flex;align-items:center;gap:.18rem}.calc-angle-label{padding:0 .5rem 0 .4rem;color:#e2e8f0d1;font-size:.75rem}.calc-angle-option{border:0;border-radius:999px;background:transparent;color:#e2e8f0d1;font-weight:800;padding:.45rem .72rem;cursor:pointer;transition:background .16s ease,color .16s ease,transform .16s ease}.calc-display-edit-button,.calc-angle-option{touch-action:manipulation}.calc-angle-option.is-active{background:#fff;color:var(--calc-panel)}.calc-angle-option.is-pressed{transform:scale(.98)}@media(max-width:640px){.calc-view-controls{gap:.5rem}.calc-view-group{gap:.3rem}.calc-display-card{padding:clamp(.58rem,calc(.5rem + .5vw),.66rem) clamp(.64rem,calc(.54rem + .6vw),.7rem) clamp(.52rem,calc(.44rem + .5vw),.6rem);border-radius:.9rem}.calc-display-meta{flex-direction:column;align-items:flex-start;gap:clamp(.16rem,calc(.08rem + .5vw),.22rem)}.calc-display-card-basic .calc-display-meta{flex-direction:row;align-items:center;gap:clamp(.32rem,calc(.2rem + .7vw),.4rem)}.calc-display-card-scientific .calc-display-meta{flex-direction:row;align-items:flex-start;gap:clamp(.28rem,calc(.18rem + .6vw),.34rem)}.calc-display-meta-actions{width:auto;gap:clamp(.32rem,calc(.2rem + .7vw),.4rem)}.calc-stacked-fraction-numerator,.calc-stacked-fraction-denominator{font-size:.72em}.calc-stacked-fraction-bar{min-width:1.35em}.calc-exact-result{font-size:.94em}.calc-mode-tab,.calc-segment,.calc-chip{font-size:.8rem}.calc-keyboard-hint{display:none}.calc-expression-editor{gap:.28rem;min-height:2.5rem;padding:.42rem .46rem}.calc-expression-token{padding:.38rem .48rem;font-size:.96rem}.calc-equation{margin-top:clamp(.34rem,calc(.24rem + .5vw),.42rem);font-size:.98rem}.calc-display-card-basic .calc-display-value{font-size:clamp(2.18rem,11vw,3rem)}.calc-display-card-scientific .calc-display-value{font-size:clamp(1.96rem,8.7vw,2.9rem)}.calc-equation-scientific{min-height:1.55rem}.calc-display-toolbar{margin-top:clamp(.26rem,calc(.16rem + .5vw),.34rem)}.calc-result-mode-label{display:none}.calc-display-toolbar-group{width:100%;justify-content:space-between;margin-left:0}.calc-display-toolbar-primary{width:100%;justify-content:space-between;gap:.4rem}.calc-display-toolbar-scientific{gap:.32rem}.calc-display-toolbar-scientific .calc-result-mode-switch{min-width:0}.calc-angle-switch{width:100%;justify-content:space-between;padding:clamp(.18rem,calc(.1rem + .5vw),.22rem)}.calc-display-settings-button{min-width:2.45rem;min-height:2.45rem}.calc-view-popover{width:min(18rem,calc(100vw - 1.5rem));padding:.72rem;gap:.5rem}.calc-angle-option{padding:clamp(.4rem,calc(.3rem + .4vw),.42rem) clamp(.52rem,calc(.38rem + .8vw),.58rem)}}@media(max-width:640px)and (max-height:740px){.calc-view-controls{gap:.4rem}.calc-view-label{font-size:.66rem}.calc-display-card{padding:.64rem .7rem .56rem;margin-bottom:.42rem}.calc-display-meta{font-size:.74rem}.calc-display-card-basic .calc-display-meta{gap:.32rem}.calc-display-card-scientific .calc-angle-label{display:none}.calc-mode-tab,.calc-segment{padding:.48rem .68rem}.calc-result-mode-switch .calc-segment{padding:.42rem .58rem}.calc-chip{padding:.48rem .68rem;font-size:.76rem}.calc-equation{margin-top:.28rem;font-size:.95rem}.calc-equation-basic{min-height:1.05rem}.calc-equation-scientific{min-height:1.2rem}.calc-display-value{margin-top:.24rem}.calc-display-card-basic .calc-display-value{font-size:clamp(1.98rem,10.6vw,2.55rem)}.calc-display-card-scientific .calc-display-value{font-size:clamp(1.74rem,7.7vw,2.25rem)}.calc-display-error{min-height:1.1rem;margin-top:.28rem;line-height:1.1rem;font-size:.77rem}.calc-display-toolbar{margin-top:.22rem}.calc-result-mode-switch{gap:.26rem}.calc-display-toolbar-primary{gap:.34rem}.calc-display-toolbar-group{width:100%;justify-content:space-between;gap:.4rem}.calc-angle-switch{padding:.16rem;gap:.18rem}.calc-copy-button{min-height:2.16rem;padding:.44rem .66rem;font-size:.75rem}.calc-angle-option{padding:.34rem .5rem;font-size:.82rem}.calc-display-settings-button{min-width:2.32rem;min-height:2.32rem}.calc-view-popover{top:calc(100% + .34rem);padding:.64rem}.calc-expression-token{font-size:.9rem}}.calc-keypad{display:grid;gap:.64rem}.calc-keypad-scientific{padding:.62rem;border-radius:.95rem;background:#f8fafc;border:1px solid rgba(226,232,240,.92)}.calc-key-grid{display:grid;gap:.52rem}.calc-key-grid-basic,.calc-key-grid-scientific{grid-template-columns:repeat(4,minmax(0,1fr))}.calc-key{min-height:3.15rem;border:0;border-radius:.82rem;padding:.42rem;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:.14rem;cursor:pointer;transition:transform .14s ease,box-shadow .14s ease,background .14s ease,color .14s ease;box-shadow:inset 0 0 0 1px #94a3b824,0 8px 18px #0f172a0f;touch-action:manipulation}.calc-key:hover{transform:translateY(-1px)}.calc-key:focus-visible,.calc-history-toggle:focus-visible,.calc-history-clear:focus-visible,.calc-history-reuse:focus-visible,.calc-angle-option:focus-visible,.calc-display-edit-button:focus-visible,.calc-display-settings-button:focus-visible{outline:3px solid var(--calc-outline);outline-offset:2px}.calc-key[data-active=true]{transform:translateY(1px) scale(.985);box-shadow:inset 0 0 0 2px #ffffff61,0 4px 12px #0f172a1a}.calc-key-number{background:var(--calc-number);color:var(--calc-ink);box-shadow:inset 0 0 0 1px var(--calc-number-border),0 10px 18px #0f172a0d}.calc-key-operator{background:linear-gradient(180deg,#eff6ff 0%,var(--calc-operator-soft) 100%);color:var(--calc-operator-ink)}.calc-key-function{background:linear-gradient(180deg,#f0fdfa 0%,var(--calc-function) 100%);color:var(--calc-function-ink)}.calc-key-utility{background:linear-gradient(180deg,#f8fafc 0%,var(--calc-utility) 100%);color:var(--calc-utility-ink)}.calc-key-action{background:linear-gradient(180deg,#fff1f2 0%,var(--calc-danger-soft) 100%);color:var(--calc-danger)}.calc-key-grid-scientific .calc-key-action{background:linear-gradient(180deg,#fff7f7,#fee2e2);color:#b91c1c}.calc-key-grid-scientific .calc-key-utility{background:linear-gradient(180deg,#f8fafc,#e8eef5);color:#475569}.calc-key-grid-scientific .calc-key-function{background:linear-gradient(180deg,#f0fdfa,#ccfbf1);color:#0f766e}.calc-key-grid-scientific .calc-key-operator{background:linear-gradient(180deg,#e8f1ff,#cfe3ff);color:#1d4ed8}.calc-key-grid-scientific .calc-key-emphasis-operator{background:linear-gradient(180deg,#d6e7ff,#afccff);color:#1e3a8a;box-shadow:inset 0 0 0 1px #60a5fa3d,0 10px 20px #3b82f629}.calc-key-equals{background:linear-gradient(180deg,var(--calc-accent) 0%,var(--calc-accent-strong) 100%);color:#fff;box-shadow:inset 0 0 0 1px #ffffff1f,0 14px 28px #b453093d}.calc-key-wide{grid-column:span 2}.calc-key-tall{min-height:5rem}.calc-key-label{font-size:1rem;font-weight:850}.calc-key-sublabel{font-size:.72rem}.calc-history-panel{padding:.8rem;position:sticky;top:1rem}.calc-history-head{display:flex;justify-content:space-between;gap:.9rem;align-items:flex-start;margin-bottom:.75rem}.calc-history-head h3{margin:0;font-size:1rem;font-weight:850}.calc-history-summary{margin:.22rem 0 0;font-size:.82rem;color:var(--calc-muted)}.calc-history-toggle,.calc-history-clear{border:0;border-radius:999px;background:#e2e8f0b8;color:var(--calc-utility-ink);cursor:pointer;font-weight:800;padding:.58rem .82rem}.calc-history-clear{background:transparent;color:var(--calc-muted);padding-inline:0}.calc-history-clear-mobile{margin-bottom:.65rem}.calc-history-body{display:grid;gap:.6rem}.calc-history-list{list-style:none;padding:0;margin:0;display:grid;gap:.65rem;max-height:34rem;overflow:auto}.calc-history-item{padding:.85rem;border-radius:1rem;background:var(--calc-surface-strong);border:1px solid rgba(226,232,240,.92)}.calc-history-expression{color:var(--calc-muted);font-size:.82rem;line-height:1.45;overflow-wrap:anywhere}.calc-history-result{margin-top:.35rem;font-size:1.05rem;font-weight:850;font-family:SFMono-Regular,Cascadia Code,Menlo,monospace}.calc-history-reuse{margin-top:.72rem;width:100%;border:0;border-radius:.88rem;background:#e0f2fe;color:#075985;font-weight:800;padding:.68rem .8rem;cursor:pointer}@media(max-width:640px){.calc-keypad-scientific{padding:clamp(.5rem,calc(.4rem + .6vw),.56rem)}.calc-key-grid{gap:clamp(.56rem,calc(.4rem + .9vw),.66rem)}.calc-key{min-height:clamp(2.72rem,calc(2.45rem + 1.2vw),2.95rem);border-radius:clamp(.72rem,calc(.64rem + .5vw),.82rem)}.calc-key-label{font-size:.98rem}.calc-history-panel.is-collapsible .calc-history-body{display:none}.calc-history-panel.is-collapsible.is-expanded .calc-history-body{display:grid}}@media(max-width:640px)and (max-height:740px){.calc-keypad-scientific{padding:.42rem}.calc-key-grid{gap:clamp(.44rem,calc(.3rem + .8vw),.5rem)}.calc-key{min-height:clamp(2.8rem,calc(2.52rem + 1.2vw),2.92rem);border-radius:.88rem;padding:.42rem}.calc-key-label{font-size:.92rem}}