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var(--color-border);background:var(--color-canvas-soft-2);gap:4px;padding:8px;display:flex}.mode-tab{color:var(--color-muted);cursor:pointer;background:0 0;border:0;border-radius:10px;flex:1;padding:12px 14px;font-size:12px;transition:all .2s}.mode-tab:hover{color:var(--color-ink)}.mode-tab.active{background:var(--color-canvas);color:var(--color-ink);font-weight:600;box-shadow:0 2px 8px #0000000f}.mode-heading{justify-content:space-between;align-items:flex-start;margin-bottom:26px;display:flex}.card-number{color:var(--color-muted);letter-spacing:.14em;font-size:10px}.mode-heading h3{color:var(--color-ink);letter-spacing:-.02em;margin:5px 0 0;font-size:20px;font-weight:500}.math-symbol{background:color-mix(in srgb,#a855f7 10%,var(--color-canvas));color:#a855f7;border-radius:10px;place-items:center;width:36px;height:36px;font-weight:700;display:grid}.calculation-row{align-items:flex-end;gap:12px;display:flex}.calculation-row label{flex:1;min-width:120px}.calculation-row label>span{color:var(--color-muted);margin-bottom:7px;font-size:10px;display:block}.calculation-row input{box-sizing:border-box;border:1px solid var(--color-hairline-strong);background:var(--color-canvas-soft-2);width:100%;height:54px;color:var(--color-ink);border-radius:11px;outline:none;padding:0 14px;font-size:20px}.calculation-row input:focus{border-color:var(--color-link);box-shadow:0 0 0 3px #60a5fa1f}.operator{color:var(--color-muted);white-space:nowrap;padding-bottom:18px;font-size:12px}.result-value{box-sizing:border-box;background:var(--color-ink);min-width:155px;height:54px;color:var(--color-canvas);border-radius:11px;justify-content:center;align-items:center;padding:0 16px;font-size:22px;font-weight:600;display:flex}.mode-hint{color:var(--color-muted);margin:14px 0 0;font-size:11px}.change-result{min-width:175px;height:54px;position:relative}.change-result 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12px;font-size:14px;font-weight:500}.formula-card code{background:var(--color-canvas-soft-2);color:var(--color-ink);border-radius:9px;padding:12px;font-size:11px;display:block;overflow:auto}.example-strip{border:1px solid var(--color-border);background:linear-gradient(135deg,var(--color-canvas-soft-2),var(--color-canvas));border-radius:15px;justify-content:space-between;align-items:center;gap:24px;margin-top:18px;padding:20px 22px;display:flex}.example-strip h3{color:var(--color-ink);margin:0;font-size:15px;font-weight:500}.example-numbers{color:var(--color-muted);gap:20px;font-size:12px;display:flex}.example-numbers strong{color:var(--color-ink)}@media (width<=720px){.math-intro{flex-direction:column;align-items:flex-start}.mode-tabs{overflow-x:auto}.mode-tab{white-space:nowrap;flex:none}.mode-content{padding:22px 18px}.calculation-row{flex-wrap:wrap}.calculation-row label{flex:130px}.operator{padding-bottom:17px}.result-value{flex:150px}.formula-grid{grid-template-columns:1fr}.example-strip{flex-direction:column;align-items:flex-start}.example-numbers{flex-direction:column;gap:7px}}.percentage-workspace{max-width:980px}.percentage-panel{border-radius:20px;box-shadow:0 14px 40px #00000009}.mode-tabs{gap:5px;padding:7px}.mode-tab{min-height:44px;font-size:13px}.mode-content{padding:34px}.mode-heading h3{font-size:21px}.calculation-row{gap:14px}.calculation-row input{background:var(--color-canvas)}.result-value{min-width:165px;font-size:23px}.math-explainer{max-width:980px;margin-top:58px}.formula-grid{gap:16px}.formula-card{padding:20px}.example-strip{border-radius:16px}@media (width<=820px){.calculation-row{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:end;display:grid}.calculation-row .result-value,.calculation-row 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(width<=820px){.calculation-row{gap:12px!important}.percentage-workspace{width:100%;min-width:0;max-width:100%;margin-inline:auto}.percentage-panel{box-sizing:border-box;border-radius:18px;width:100%;max-width:100%;overflow:hidden}.mode-tabs{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:5px;padding:7px;display:grid;overflow:visible}.mode-tab{white-space:normal;width:100%;min-width:0;min-height:46px;padding:11px 8px;font-size:12px;line-height:1.25}.mode-tab:last-child{grid-column:1/-1}.mode-content{min-width:0;padding:24px 18px 26px}.mode-heading{margin-bottom:24px}.mode-heading h3{font-size:21px;line-height:1.3}.calculation-row{min-width:0;grid-template-columns:minmax(0,1fr) 64px minmax(0,1fr)!important;align-items:end!important;gap:14px 8px!important;width:100%!important;display:grid!important}.calculation-row label{flex:none!important;width:auto!important;min-width:0!important}.calculation-row label>span{margin-bottom:8px;font-size:10px}.calculation-row input{width:100%;height:52px;padding:0 12px;font-size:19px}.calculation-row>.operator{text-align:center;white-space:normal;width:100%;min-width:0;font-size:11px;line-height:1.15;padding-bottom:17px!important}.calculation-row>.operator:last-of-type{display:none!important}.calculation-row .result-value,.calculation-row .change-result{grid-column:1/-1!important;width:100%!important;min-width:0!important}.calculation-row .result-value{border-radius:12px;height:56px;font-size:22px}.change-result{margin-top:1px;height:56px!important}.change-result .result-value{height:56px}.change-result>span{top:63px}.mode-content[data-panel=change] .mode-hint{margin-top:27px;line-height:1.5}.mode-hint{line-height:1.5}}@media (width<=380px){.mode-tab{padding-inline:6px;font-size:11px}.mode-content{padding-inline:16px}.calculation-row{grid-template-columns:minmax(0,1fr) 54px minmax(0,1fr)!important;column-gap:6px!important}}.percentage-panel .mode-tab.active{color:#fff;background:#171717;font-weight:600;box-shadow:0 2px 8px #0000001a}.percentage-panel .mode-tab:not(.active):hover{background:color-mix(in srgb, var(--color-ink) 7%, var(--color-canvas-soft-2));color:var(--color-ink)}.dark .percentage-panel .mode-tab.active,html.dark .percentage-panel .mode-tab.active{color:#fff;background:#1a85ff;box-shadow:0 3px 10px #1a85ff38}.dark .percentage-panel .mode-tab:not(.active):hover,html.dark .percentage-panel .mode-tab:not(.active):hover{background:color-mix(in srgb, #1a85ff 10%, var(--color-canvas-soft-2));color:var(--color-ink)}