.calc-layout{display:grid;gap:14px;grid-template-columns:minmax(0,540px);justify-content:center;align-items:start;touch-action:manipulation}.calc{width:100%;min-width:0;max-width:540px;border:1px solid var(--color-line);border-radius:14px;background:var(--color-surface);box-shadow:var(--shadow-soft);padding:10px;-webkit-tap-highlight-color:transparent}.calc:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}.calc-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.calc-mode{display:inline-flex;border:1px solid var(--color-line);border-radius:10px;overflow:hidden;background:#f4f8f5}.calc-mode__button,.calc-history-toggle{min-height:44px;border:0;background:transparent;color:var(--color-text);font-weight:800;cursor:pointer;touch-action:manipulation}.calc-mode__button{min-width:72px;padding:0 14px}.calc-mode__button[aria-pressed=true]{background:var(--color-primary);color:#fff}.calc-mode__button[aria-pressed=true]:before{content:"✓ "}.calc-history-toggle{min-width:64px;padding:0 12px;border:1px solid var(--color-line);border-radius:10px;background:#fff}.calc-history-toggle[aria-expanded=true]{background:#e9f5ee}.calc-history-toggle[aria-expanded=true]:after{content:" ▴"}.calc-history-toggle[aria-expanded=false]:after{content:" ▾"}.calc-display{margin-bottom:8px;border:1px solid var(--color-line);border-radius:10px;background:#f4f8f5;padding:6px 12px 4px}.calc-small{height:1.5em;overflow:hidden;color:var(--color-muted);font-size:.9rem;line-height:1.5;font-variant-numeric:tabular-nums;text-align:right;text-overflow:ellipsis;white-space:nowrap}.calc-main{display:flex;height:58px;flex-direction:column;overflow-x:hidden;overflow-y:auto;scrollbar-width:none;text-align:right;user-select:text;-webkit-user-select:text}.calc-main::-webkit-scrollbar{display:none}.calc-main__text{display:block;margin-top:auto;color:var(--color-text);font-size:37px;font-variant-numeric:tabular-nums;font-weight:600;line-height:1.2}.calc-main[data-result=true] .calc-main__text{font-weight:800}.calc-main__text--settle{animation:calc-settle .16s ease-out}.calc-aux{min-height:calc(4.35em + 2px);padding-top:2px;font-size:.84rem}.calc-aux__line{min-height:1.45em;margin:0;color:var(--color-muted);line-height:1.45;overflow-wrap:anywhere;text-align:right}.calc-aux__line[data-kind=error]{color:#a3261b;font-weight:700}.calc-aux__line[data-kind=hint]{color:#7a4f00;font-weight:700}.calc-sr{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.calc-helpers{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin-bottom:8px}.calc-helper{min-height:44px;border:1px solid var(--color-primary);border-radius:10px;background:#fff;padding:4px 2px;color:var(--color-primary-dark);font-size:.88rem;font-weight:800;line-height:1.2;overflow-wrap:anywhere;cursor:pointer;touch-action:manipulation}.calc-helper[aria-expanded=true]{background:#e9f5ee}.calc-helper[aria-expanded=true]:after{content:" ▴"}.calc-helper[aria-expanded=false]:after{content:" ▾"}.calc-helper.is-copied:before{content:"✅ "}.calc-discount{display:grid;gap:8px;margin-bottom:8px;border:1px solid var(--color-line);border-radius:10px;background:#f7faf8;padding:8px 10px}.calc-discount__question{margin:0;font-weight:800}.calc-discount__chips,.calc-discount__row{display:flex;flex-wrap:wrap;align-items:center;gap:6px}.calc-chip{min-width:48px;min-height:44px;border:1px solid var(--color-line);border-radius:999px;background:#fff;color:var(--color-text);font-size:1rem;font-weight:800;cursor:pointer;touch-action:manipulation}.calc-discount__label{font-weight:700}.calc-discount__input{width:7.5em;min-height:44px;border:1px solid var(--color-line);border-radius:8px;background:#fff;padding:6px 10px;color:var(--color-text);font-size:16px}.calc-discount__apply{min-height:44px;border:0;border-radius:8px;background:var(--color-primary);padding:0 16px;color:#fff;font-weight:800;cursor:pointer}.calc-body{display:grid;gap:8px}.calc-sci{display:none;grid-template-columns:repeat(5,minmax(0,1fr));gap:6px}.calc[data-mode=scientific] .calc-sci{display:grid}.calc-keypad{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}.calc-key{min-width:0;height:56px;border:1px solid #cfd8d2;border-radius:10px;background:#fff;padding:0;color:var(--color-text);font-size:clamp(1.1rem,6.2vw,1.4rem);font-weight:700;line-height:1;cursor:pointer;touch-action:manipulation;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;transition:transform 80ms ease-out,background-color 80ms ease-out}.calc-key--operator{border-color:#b8d6c6;background:#eaf5ee;color:var(--color-primary-dark)}.calc-key--function{border-color:#cfd6dc;background:#f1f4f6;color:#25323d}.calc-key--clear{border-color:#ecd59a;background:var(--color-accent-soft);color:#6b4a00}.calc-key--equals{border-color:var(--color-primary);background:var(--color-primary);color:#fff}.calc-sci .calc-key{height:44px;font-size:clamp(.85rem,3.6vw,1rem)}.calc-sci .calc-key--wide{grid-column:span 2}.calc-key[aria-pressed=true]:after{content:" ✓"}.calc-key[data-pressed],.calc-mode__button[data-pressed],.calc-helper[data-pressed],.calc-chip[data-pressed],.calc-history-toggle[data-pressed]{background-color:#d3e6db;transform:scale(.96)}.calc-key--equals[data-pressed]{background-color:var(--color-primary-dark)}.calc-key:focus-visible,.calc-helper:focus-visible,.calc-chip:focus-visible,.calc-mode__button:focus-visible,.calc-history-toggle:focus-visible,.calc-discount__apply:focus-visible,.calc-discount__input:focus-visible,.calc-history__use:focus-visible,.calc-history__copy:focus-visible,.calc-history__button:focus-visible,.calc-save input:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}.calc-mode__button:focus-visible{outline-offset:-4px}.calc-mode__button[aria-pressed=true]:focus-visible{outline-color:#fff}.calc-history__use:focus-visible,.calc-history__copy:focus-visible{outline-offset:-3px}.calc-history{display:flex;min-width:0;max-width:540px;flex-direction:column;gap:8px;border:1px solid var(--color-line);border-radius:14px;background:var(--color-surface);padding:12px}.calc-history__head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 12px}.calc-history__title{margin:0;font-size:1.15rem}.calc-history__title:focus{outline:none}.calc-save{display:inline-flex;min-height:44px;align-items:center;gap:8px;color:var(--color-text);font-size:.9rem;cursor:pointer}.calc-save input{width:20px;height:20px;margin:0}.calc-save__status{white-space:nowrap}.calc-history__note{margin:0;color:var(--color-muted);font-size:.84rem}.calc-history__note-part{display:inline-block;margin-right:.3em}.calc-history__scroll{height:15rem;overflow-y:auto;border-top:1px solid var(--color-line)}.calc-history__empty{margin:0;padding:12px 2px;color:var(--color-muted)}.calc-history__list{margin:0;padding:0;list-style:none}.calc-history__item{display:flex;align-items:stretch;border-bottom:1px solid var(--color-line)}.calc-history__item--new{animation:calc-enter .16s ease-out}.calc-history__use{display:grid;flex:1;min-width:0;min-height:52px;gap:2px;border:0;background:transparent;padding:6px 4px;color:var(--color-text);font:inherit;text-align:left;cursor:pointer}.calc-history__expr{color:var(--color-muted);font-size:.86rem;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.calc-history__tag{display:inline-block;border:1px solid var(--color-line);border-radius:999px;background:#f4f8f5;padding:0 8px;color:var(--color-primary-dark);font-size:.78rem;font-weight:700}.calc-history__result{font-size:1.05rem;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.calc-history__copy{min-width:56px;min-height:44px;border:0;background:transparent;color:var(--color-primary-dark);font-weight:800;cursor:pointer}.calc-history__copy.is-copied:before{content:"✅ "}.calc-history__actions{display:flex;gap:8px;min-height:44px}.calc-history__button{min-height:44px;border:1px solid var(--color-line);border-radius:10px;background:#fff;padding:0 16px;color:var(--color-text);font-weight:800;cursor:pointer}.calc-history__button--undo{border-color:var(--color-primary);background:var(--color-primary);color:#fff}@keyframes calc-settle{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes calc-enter{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@media(max-width:400px){.calc{padding:8px}.calc-display{padding-right:10px;padding-left:10px}}@media(max-width:340px)and (max-height:600px){.calc-keypad .calc-key{height:52px}}@media(min-width:900px){.calc-layout{grid-template-columns:minmax(0,430px)}.calc-layout[data-mode=scientific]{grid-template-columns:minmax(0,750px)}.calc,.calc-history{width:auto;max-width:none}.calc{padding:14px}.calc-body{grid-template-columns:minmax(0,1fr)}.calc[data-mode=scientific] .calc-body{grid-template-columns:300px minmax(0,1fr);gap:12px}.calc-sci{grid-template-columns:repeat(3,minmax(0,1fr))}.calc-sci .calc-key{height:56px}}@media(prefers-reduced-motion:reduce){.calc-key{transition:background-color 0s}.calc-key[data-pressed],.calc-mode__button[data-pressed],.calc-helper[data-pressed],.calc-chip[data-pressed],.calc-history-toggle[data-pressed]{transform:none}.calc-main__text--settle,.calc-history__item--new{animation:none}}.calc-page .tool-page-header{margin-bottom:10px}.calc-page .tool-page-heading{text-align:center}.calc-page .tool-page-heading h1{font-size:2rem}.calc-content h2,.calc-content h3,.calc-content p,.calc-content li,.calc-content td{overflow-wrap:anywhere}.calc-content ol{color:var(--color-muted);padding-left:1.3rem}@media(max-width:640px){.calc-page .breadcrumbs{margin-bottom:4px;font-size:.8rem;line-height:1.4}.calc-page .tool-page-header{margin-bottom:8px}.calc-page .tool-page-heading h1{font-size:1.65rem;line-height:1.15}.calc-page .tool-page-heading .lead{margin-top:4px;font-size:.875rem;line-height:1.5}}@media(max-width:380px){.calc-page .tool-page-heading .lead{font-size:.85rem}}