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var(--color-border)}.account-summary-strip>div:last-child{border-bottom:0}.account-summary-strip span{color:var(--color-muted);font-size:.78rem;font-weight:600}.account-summary-strip strong{color:var(--color-heading);font-family:var(--font-mono);font-size:1.1rem}.account-library{padding:clamp(1.25rem,4vw,2rem);border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-sm)}.account-library-heading{display:flex;flex-wrap:wrap;gap:var(--space-4);align-items:center;justify-content:space-between;padding-bottom:var(--space-5);border-bottom:1px solid var(--color-border)}.account-library-heading h2{margin:var(--space-1) 0;font-size:1.5rem}.account-library-heading>div>p:last-child{max-width:38rem;color:var(--color-muted)}.account-library-status{margin-top:var(--space-4);color:var(--color-muted);font-weight:600}.account-library-status[data-tone=error]{color:var(--color-danger)}.account-library-status[data-tone=success]{color:var(--color-primary)}.account-library .account-empty-state{margin-top:var(--space-5)}.saved-calculation-list{display:grid;margin-top:var(--space-3)}.saved-calculation-row{min-width:0;padding:var(--space-4) 0;border-bottom:1px solid var(--color-border)}.saved-calculation-row:last-child{border-bottom:0}.saved-calculation-summary{display:flex;flex-wrap:wrap;gap:var(--space-4);align-items:center;justify-content:space-between}.saved-calculation-summary>div:first-child{min-width:0}.saved-calculation-summary h3{margin:var(--space-1) 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summary{background:var(--color-primary-soft);color:var(--color-primary-hover)}.account-download-options{position:absolute;top:calc(100% + .35rem);right:0;z-index:12;display:grid;width:11.5rem;overflow:hidden;padding:.35rem;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);box-shadow:var(--shadow-md)}.account-download-option{width:100%;padding:.62rem .7rem;border:0;border-radius:.42rem;background:transparent;color:var(--color-slate);font:inherit;font-size:.82rem;font-weight:600;text-align:left;cursor:pointer}.account-download-option:hover,.account-download-option:focus-visible{background:var(--color-primary-soft);color:var(--color-primary-hover)}.account-row-action--danger{color:var(--color-danger)}.account-row-action--danger:hover{background:var(--color-danger-soft);color:var(--color-danger)}.saved-calculation-rename{display:grid;gap:var(--space-3)}.saved-calculation-rename[hidden]{display:none}.saved-calculation-rename input{width:100%;height:var(--input-height);padding:0 var(--space-3);border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);color:var(--color-text);font:inherit}.saved-calculation-rename input:focus{border-color:var(--color-primary);outline:3px solid var(--color-primary-soft)}.account-dialog{width:min(calc(100% - 2rem),30rem);padding:0;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-lg)}.account-dialog::backdrop{background:#0f172a7a;backdrop-filter:blur(3px)}.account-dialog form{display:grid;gap:var(--space-3);padding:var(--space-5)}.account-dialog h2{margin:0;font-size:1.4rem}.account-dialog p:not(.account-panel-label){color:var(--color-muted)}.account-dialog-actions{display:flex;flex-wrap:wrap;gap:var(--space-3);justify-content:flex-end;margin-top:var(--space-2)}.account-danger-button{border-color:var(--color-danger);background:var(--color-danger);color:#fff}.account-tool-picker{width:min(calc(100% - 2rem),56rem);max-height:min(50rem,calc(100dvh - 2rem));padding:0;overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius-xl);background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-lg)}.account-tool-picker::backdrop{background:#0f172a8f;backdrop-filter:blur(5px)}.account-tool-picker-shell{display:grid;grid-template-rows:auto minmax(0,1fr) auto;max-height:min(50rem,calc(100dvh - 2rem))}.account-tool-picker-header{display:flex;gap:var(--space-4);align-items:flex-start;justify-content:space-between;padding:var(--space-5);border-bottom:1px solid var(--color-border);background:radial-gradient(circle at 90% 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svg{width:1rem;fill:none;stroke:currentColor;stroke-linecap:round;stroke-width:2}.account-tool-picker-body{display:grid;gap:var(--space-5);min-height:0;padding:var(--space-5);overflow-y:auto;overscroll-behavior:contain}.account-tool-picker-group{display:grid;gap:var(--space-2);min-width:0}.account-tool-picker-group h3{margin:0;color:var(--color-muted);font-size:.73rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase}.account-tool-picker-group>div{display:grid;overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius-md);background:#fff}.account-tool-picker-group a{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:var(--space-3);align-items:center;min-width:0;padding:.9rem var(--space-3);border-bottom:1px solid var(--color-border);color:var(--color-text);text-decoration:none}.account-tool-picker-group a:last-child{border-bottom:0}.account-tool-picker-group a:hover{background:var(--color-primary-soft)}.account-tool-picker-group a:focus-visible{position:relative;z-index:1;outline:3px solid var(--color-primary-border);outline-offset:-3px}.account-tool-picker-icon{display:inline-grid;width:2.25rem;height:2.25rem;place-items:center;border:1px solid var(--color-primary-border);border-radius:var(--radius-sm);background:var(--color-primary-soft);color:var(--color-primary-hover);font-family:var(--font-mono);font-size:.68rem;font-weight:700}.account-tool-picker-group a>span:nth-child(2){display:grid;gap:.12rem;min-width:0}.account-tool-picker-group strong{min-width:0;font-size:.9rem;font-weight:650;overflow-wrap:anywhere}.account-tool-picker-group small{min-width:0;color:var(--color-muted);font-size:.76rem;line-height:1.45;overflow-wrap:anywhere}.account-tool-picker-group a>svg{width:1rem;fill:none;stroke:var(--color-muted-2);stroke-linecap:round;stroke-linejoin:round;stroke-width:2}.account-tool-picker-group a:hover>svg{stroke:var(--color-primary);transform:translate(2px)}.account-tool-picker-footer{display:flex;flex-wrap:wrap;gap:var(--space-2) var(--space-4);align-items:center;justify-content:space-between;padding:var(--space-3) var(--space-5);border-top:1px solid var(--color-border);background:var(--color-surface-soft);color:var(--color-muted);font-size:.76rem}.account-tool-picker-footer a{color:var(--color-primary);font-weight:700;text-decoration:none}.account-tool-picker-footer a:hover{color:var(--color-primary-hover);text-decoration:underline}@media(min-width:760px){.account-summary-strip{grid-template-columns:repeat(3,minmax(0,1fr))}.account-summary-strip>div{border-right:1px solid var(--color-border);border-bottom:0}.account-summary-strip>div:last-child{border-right:0}.account-tool-picker-body{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}}@media(min-width:900px){.account-entry-shell{grid-template-columns:minmax(0,.9fr) minmax(23rem,1.1fr)}}@media(max-width:899px){.account-product-panel{min-height:30rem}}@media(max-width:560px){.account-entry-shell{width:min(calc(100% - 1rem),70rem);border-radius:var(--radius-lg)}.account-auth-card,.account-product-panel{padding:var(--space-5)}.account-product-panel{min-height:0}.account-label-row{align-items:baseline}.account-preview-metrics{grid-template-columns:1fr}.account-dashboard-actions,.account-library-heading .button,.saved-calculation-actions,.saved-calculation-rename-actions{width:100%}.account-dashboard-actions{justify-items:stretch}.account-dashboard-actions .button,.account-library-heading .button,.saved-calculation-rename-actions .button{width:100%}.saved-calculation-actions{justify-content:flex-start}}.back-to-top{position:fixed;right:max(1rem,env(safe-area-inset-right));bottom:max(1rem,env(safe-area-inset-bottom));z-index:40;display:inline-flex;gap:.38rem;align-items:center;min-width:3.6rem;min-height:2.75rem;justify-content:center;padding:.6rem .85rem;border:1px solid var(--color-primary-border);border-radius:999px;background:#fffffff0;color:var(--color-primary-hover);font:inherit;font-size:.78rem;font-weight:700;opacity:0;pointer-events:none;visibility:hidden;box-shadow:0 10px 28px #0f172a24;transform:translateY(.75rem);transition:opacity .16s ease,transform .16s ease,visibility .16s ease,border-color .16s ease,background-color .16s ease;cursor:pointer}.back-to-top.is-visible{opacity:1;pointer-events:auto;visibility:visible;transform:translateY(0)}.back-to-top:hover{border-color:var(--color-primary);background:var(--color-primary);color:#fff}.back-to-top:focus-visible{outline:3px solid var(--color-primary-soft);outline-offset:3px}.back-to-top svg{width:1rem;height:1rem;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2}@media(max-width:480px){.back-to-top{right:max(.75rem,env(safe-area-inset-right));bottom:max(.75rem,env(safe-area-inset-bottom));min-width:2.75rem;width:2.75rem;padding-inline:0}.back-to-top span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;clip-path:inset(50%)}}@media(prefers-reduced-motion:reduce){.back-to-top{transition:none}}@media print{.back-to-top{display:none}}.result-save-button{flex:1.2 1 10rem;min-width:0;border-color:var(--color-primary);background:var(--color-primary);color:#fff}.result-save-button:hover:not(:disabled){border-color:var(--color-primary-hover);background:var(--color-primary-hover);color:#fff}.result-export-button{border-color:var(--color-border-strong);background:var(--color-surface);color:var(--color-heading)}.result-export-button:hover:not(:disabled){border-color:var(--color-primary-border);background:var(--color-primary-soft);color:var(--color-primary-hover)}.result-save-status{min-height:1.25rem;margin:0;color:var(--color-muted);font-size:.82rem;font-weight:600}.result-save-status:empty{display:none}.result-save-status[data-tone=success]{color:var(--color-primary-hover)}.result-save-status[data-tone=error]{color:var(--color-danger)}.calculation-save-dialog{width:min(calc(100% - 2rem),31rem);padding:0;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-lg)}.calculation-save-dialog::backdrop{background:#0f172a7a;backdrop-filter:blur(4px)}.calculation-save-dialog form{display:grid;gap:var(--space-4);padding:clamp(1.25rem,4vw,2rem)}.calculation-save-dialog h2{margin:var(--space-1) 0 var(--space-2);font-size:1.45rem}.calculation-save-dialog form>div:first-child>p:last-child{color:var(--color-muted)}.calculation-save-dialog label{display:grid;gap:var(--space-2);color:var(--color-heading);font-size:.86rem;font-weight:600}.calculation-save-dialog input{width:100%;min-width:0;height:var(--input-height);padding:0 var(--space-3);border:1px solid var(--color-border-strong);border-radius:var(--radius-sm);background:#fff;color:var(--color-text);font:inherit;font-weight:400}.calculation-save-dialog input:focus{border-color:var(--color-primary);outline:3px solid var(--color-primary-soft)}.calculation-save-dialog-actions{display:flex;flex-wrap:wrap;gap:var(--space-3);justify-content:flex-end}.save-account-dialog{width:min(calc(100% - 2rem),54rem);max-height:calc(100dvh - 2rem);overflow-x:hidden;overflow-y:auto;padding:0;border:1px solid rgba(148,163,184,.34);border-radius:var(--radius-xl);background:var(--color-surface);color:var(--color-text);box-shadow:0 28px 70px #0f172a33,0 3px 12px #0f172a14}.save-account-dialog::backdrop{background:#0f172a94;backdrop-filter:blur(7px)}.save-account-dialog-shell{position:relative;display:grid;gap:var(--space-5);padding:clamp(1.5rem,5vw,2.4rem);background:radial-gradient(circle at 0% 0%,rgba(17,122,77,.09),transparent 15rem),linear-gradient(180deg,#fff 0% 72%,#f8faf9)}.save-account-dialog-shell:before{position:absolute;inset:0 0 auto;height:4px;background:linear-gradient(90deg,var(--color-primary),#46a879 70%,#a7d8be);content:""}.save-account-dialog-close{position:absolute;top:var(--space-4);right:var(--space-4);display:inline-grid;width:2.25rem;height:2.25rem;place-items:center;padding:0;border:1px solid transparent;border-radius:50%;background:transparent;color:var(--color-muted);cursor:pointer}.save-account-dialog-close:hover{border-color:var(--color-border);background:var(--color-surface-soft);color:var(--color-heading)}.save-account-dialog-close:focus-visible{outline:3px solid var(--color-primary-soft);outline-offset:2px}.save-account-dialog-header{display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-4);align-items:start;padding-right:var(--space-6)}.save-account-dialog-icon{display:inline-grid;width:3.4rem;height:3.4rem;place-items:center;border:1px solid rgba(17,122,77,.2);border-radius:var(--radius-md);background:linear-gradient(145deg,#f0faf5,var(--color-primary-soft));color:var(--color-primary-hover);box-shadow:inset 0 1px #fffc,0 10px 25px #117a4d1a}.save-account-dialog-copy{display:grid;gap:var(--space-2);min-width:0}.save-account-dialog-copy h2{max-width:24ch;margin:0;font-size:clamp(1.45rem,4vw,1.9rem);line-height:1.17;letter-spacing:-.025em}.save-account-dialog-copy>p:last-child{max-width:46ch;color:var(--color-muted);font-size:.92rem;line-height:1.6}.save-account-dialog-preview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));overflow:hidden;border:1px solid var(--color-border);border-radius:var(--radius-md);background:#ffffffd1;box-shadow:var(--shadow-sm)}.save-account-dialog-preview p{display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-2);align-items:start;min-width:0;margin:0;padding:var(--space-3);border-right:1px solid var(--color-border);color:var(--color-slate);font-size:.72rem;font-weight:600;line-height:1.45}.save-account-dialog-preview p:last-child{border-right:0}.save-account-dialog-preview svg{margin-top:.08rem;color:var(--color-primary)}.save-account-dialog-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-3);width:100%;margin-top:var(--space-1)}.save-account-dialog-actions .button{width:100%;min-height:3rem}.save-account-dialog-actions .button.primary{box-shadow:0 10px 24px #117a4d33}.save-account-dialog-actions .button.secondary{border-color:var(--color-border-strong);background:#ffffffd1}.save-account-dialog-trust{display:flex;gap:var(--space-2);align-items:center;justify-content:center;margin:calc(var(--space-2) * -1) 0 0;color:var(--color-muted);font-size:.75rem}.save-account-dialog-trust svg{flex:0 0 auto;color:var(--color-primary)}.save-account-dialog-dismiss{justify-self:center;padding:.35rem .5rem;border:0;background:transparent;color:var(--color-muted);font:inherit;font-size:.82rem;font-weight:600;cursor:pointer}.save-account-dialog-dismiss:hover{color:var(--color-heading);text-decoration:underline}.account-settings-page .account-container{width:min(calc(100% - 2rem),68rem)}.account-settings-shell{display:grid;gap:var(--space-6)}.account-settings-shell[hidden]{display:none}.account-settings-hero{display:flex;gap:var(--space-5);align-items:end;justify-content:space-between;padding-bottom:var(--space-5);border-bottom:1px solid var(--color-border)}.account-settings-hero h1{max-width:42rem;margin:var(--space-2) 0;font-size:clamp(2rem,4vw,3.1rem)}.account-settings-hero>div:first-child>p:last-child{max-width:43rem;color:var(--color-muted)}.account-back-link{display:inline-flex;gap:var(--space-2);align-items:center;margin-bottom:var(--space-5);color:var(--color-muted);font-size:.84rem;font-weight:650;text-decoration:none}.account-back-link:hover{color:var(--color-primary)}.account-settings-hero-icon{display:none;width:4rem;height:4rem;flex:0 0 auto;place-items:center;border:1px solid var(--color-primary-border);border-radius:var(--radius-lg);background:var(--color-primary-soft);color:var(--color-primary)}.account-settings-layout{display:grid;gap:var(--space-5);align-items:start}.account-settings-nav{display:flex;gap:var(--space-2);overflow-x:auto;padding-bottom:var(--space-2);scrollbar-width:thin}.account-settings-nav a{display:inline-flex;flex:0 0 auto;gap:var(--space-2);align-items:center;padding:.62rem .8rem;border:1px solid var(--color-border);border-radius:999px;background:var(--color-surface);color:var(--color-muted);font-size:.8rem;font-weight:650;text-decoration:none}.account-settings-nav a:hover,.account-settings-nav a:focus-visible{border-color:var(--color-primary-border);background:var(--color-primary-soft);color:var(--color-primary-hover)}.account-settings-content{display:grid;gap:var(--space-4);min-width:0}.account-settings-panel{min-width:0;scroll-margin-top:6rem;padding:clamp(1.2rem,4vw,2rem);border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-sm)}.account-settings-heading{display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-3);align-items:start;padding-bottom:var(--space-4);border-bottom:1px solid var(--color-border)}.account-settings-heading>span{display:inline-grid;width:2.5rem;height:2.5rem;place-items:center;border:1px solid var(--color-primary-border);border-radius:var(--radius-sm);background:var(--color-primary-soft);color:var(--color-primary-hover)}.account-settings-heading h2{margin:var(--space-1) 0;font-size:1.3rem}.account-settings-heading p:last-child{color:var(--color-muted);font-size:.9rem}.account-settings-form{display:grid;gap:var(--space-4);margin-top:var(--space-5)}.account-settings-form label{display:grid;gap:var(--space-2);min-width:0;color:var(--color-heading);font-size:.86rem;font-weight:650}.account-settings-form input,.account-settings-form select,.account-settings-form 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