/* Compact workbench; all selectors stay inside the scientific page. */
.sci-page { --sci-accent:#1a594e; --sci-display:#f3f7ed; color:var(--ink); padding-bottom:40px; }
.sci-page *, .sci-page *::before, .sci-page *::after { box-sizing:border-box; }
.sci-page [hidden] { display:none !important; }
.sci-page>.breadcrumb { position:sticky; top:calc(var(--cf-topbar-offset,0px) + var(--cf-topbar-height,79px)); z-index:19; background:var(--bg); padding:8px 0; min-height:36px; border-bottom:1px solid var(--line); }
.sci-page button,.sci-page input,.sci-page textarea,.sci-page select { font:inherit; }
.sci-page button { cursor:pointer; touch-action:manipulation; }
.sci-page button:disabled { cursor:default; opacity:.48; }
.sci-page :is(button,input,select,textarea,a,summary):focus-visible { outline:3px solid #639886; outline-offset:2px; }
.sci-sr-only { position:absolute !important; width:1px !important; height:1px !important; padding:0 !important; margin:-1px !important; overflow:hidden !important; clip-path:inset(50%); white-space:nowrap; border:0 !important; }
.sci-page details>summary { position:relative; list-style:none; }
.sci-page details>summary::after { content:'+'; position:absolute; right:7px; top:50%; transform:translateY(-50%); color:var(--muted); font-size:13px; }
.sci-page details[open]>summary::after { content:'−'; }
.sci-heading { margin:10px 0; }
.sci-eyebrow { font-size:10px; font-weight:700; letter-spacing:.14em; color:var(--muted); margin:0 0 7px; }
.sci-heading>.sci-eyebrow { display:none; }
.sci-heading h1 { font-size:clamp(28px,2.8vw,34px); line-height:1.15; letter-spacing:-.045em; margin:0 0 7px; }
.sci-heading h1 span { font-weight:400; }
.sci-heading>p { color:var(--muted); font-size:12px; line-height:1.6; margin:0; }
.sci-heading a { color:var(--green); text-decoration:underline; text-underline-offset:3px; white-space:nowrap; margin-left:8px; }
.sci-workbench { container:sci-workbench / inline-size; border:1px solid var(--line); border-radius:14px; background:var(--paper); box-shadow:0 15px 40px #153e3208; }
.sci-tabs { display:grid; grid-template-columns:repeat(8,minmax(0,1fr)); gap:3px; padding:7px; border-bottom:1px solid var(--line); border-radius:14px 14px 0 0; background:var(--paper); }
.sci-tabs button { border:0; background:transparent; color:var(--muted); padding:7px 27px 7px 3px; border-radius:6px; font-size:11px; font-weight:600; min-height:34px; min-width:0; }
.sci-tabs button:hover { color:var(--ink); background:var(--light); }
.sci-tabs button[aria-selected=true] { background:var(--green); color:#fff; }
.sci-columns { display:grid; grid-template-columns:minmax(0,1fr) 230px; }
.sci-console { container:sci-console / inline-size; min-width:0; padding:14px; }
.sci-toolbar { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-bottom:8px; }
#sci-mode-label { color:var(--ink); font-size:13px; font-weight:700; margin-right:auto; }
.sci-angle { display:flex; border:1px solid var(--line); padding:2px; border-radius:6px; gap:2px; }
.sci-angle button { border:0; border-radius:4px; background:transparent; color:var(--muted); font-size:10px; font-weight:700; padding:4px 7px; min-height:28px; }
.sci-angle button[aria-pressed=true] { color:var(--green); background:var(--light); }
.sci-precision { display:flex; gap:5px; align-items:center; font-size:10px; color:var(--muted); }
.sci-precision select { border:1px solid var(--line); border-radius:6px; padding:5px 3px; color:var(--ink); background:var(--paper); width:44px; min-height:32px; }
.sci-mode-description { color:var(--muted); font-size:11px; line-height:1.5; margin:0 0 10px; }
.sci-page[data-expression-mode=true] .sci-mode-description { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
.sci-panel { margin:0 0 10px; min-width:0; }
.sci-panel label,.sci-label { display:block; font-size:11px; color:var(--ink); font-weight:600; margin:0 0 8px; }
.sci-panel :is(input,textarea,select) { display:block; width:100%; min-width:0; max-width:100%; border:1px solid var(--line); border-radius:6px; padding:8px 10px; margin-top:5px; background:var(--paper); color:var(--ink); font-size:15px; line-height:1.5; }
.sci-panel textarea { resize:vertical; font-family:ui-monospace,SFMono-Regular,Consolas,monospace; }
.sci-panel select { padding-right:24px; }
.sci-fields { display:grid; gap:10px; min-width:0; }
.sci-fields.two { grid-template-columns:repeat(2,minmax(0,1fr)); }
.sci-fields.three { grid-template-columns:repeat(3,minmax(0,1fr)); }
.sci-hint { display:block; font-size:10px; font-weight:400; line-height:1.6; color:var(--muted); margin:6px 0 8px; }
.sci-error { border:1px solid #e3bdb1; border-radius:6px; background:#fff1ea; color:#8c3725; padding:8px; margin:8px 0; font-size:12px; line-height:1.5; overflow-wrap:anywhere; }
.sci-display { background:var(--sci-display); border:1px solid var(--line); border-radius:9px; padding:9px 10px; margin-bottom:10px; min-width:0; }
#sci-expression-panel { margin:0; }
#sci-expression { display:block; width:100%; min-width:0; border:0; border-radius:4px; background:transparent; color:var(--ink); font-size:19px; line-height:1.45; padding:4px; margin:0; height:42px; min-height:42px; max-height:96px; resize:vertical; overflow:auto; }
.sci-screen { color:var(--ink); min-width:0; }
.sci-screen-top { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:6px; margin-bottom:6px; }
#sci-result-label { font-size:9px; color:var(--muted); letter-spacing:.05em; }
.sci-actions { display:flex; align-items:center; gap:5px; margin-left:auto; }
.sci-actions button { border:1px solid var(--line); border-radius:5px; padding:4px 7px; background:var(--paper); color:var(--ink); font-size:10px; min-height:32px; min-width:32px; }
.sci-actions .sci-calculate { color:#fff; background:var(--green); border-color:var(--green); font-weight:700; }
.sci-calc-symbol { display:none; }
#sci-fraction[aria-pressed=true] { background:var(--green); color:var(--paper); }
#sci-copy,#sci-reset { font-size:18px; line-height:1; }
#sci-result { font-size:27px; font-weight:600; line-height:1.25; font-variant-numeric:tabular-nums; overflow-wrap:anywhere; min-width:0; }
.sci-idle { color:var(--muted); font-size:24px; font-weight:400; }
#sci-result-note { color:var(--muted); font-size:10px; line-height:1.5; margin:6px 0 0; overflow-wrap:anywhere; }
.sci-page[data-expression-mode=true] .sci-screen { display:grid; grid-template-columns:minmax(0,1fr) auto; align-items:center; column-gap:8px; border-top:1px solid var(--line); padding-top:7px; }
.sci-page[data-expression-mode=true] .sci-screen-top { grid-column:2; grid-row:1; margin:0; }
.sci-page[data-expression-mode=true] #sci-result { grid-column:1; grid-row:1; text-align:right; max-height:90px; overflow:auto; }
.sci-page[data-expression-mode=true] :is(#sci-result-label,#sci-result-note) { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
.sci-page[data-expression-mode=true] .sci-calc-text { display:none; }
.sci-page[data-expression-mode=true] .sci-calc-symbol { display:block; font-size:21px; line-height:1; }
.sci-display[data-stale=true] #sci-result { opacity:.5; }
.sci-display[data-stale=true]::after { content:'Inputs changed · press Enter or = to update'; display:block; color:var(--muted); font-size:10px; margin-top:4px; }
.sci-page[data-expression-mode=false] .sci-display[data-stale=true]::after { content:'Inputs changed · calculate to update'; }
.sci-page[data-expression-mode=true] .sci-display[data-feedback=true] #sci-result-note { position:static; width:auto; height:auto; clip-path:none; grid-column:1 / -1; }
.sci-complex-details { grid-column:1 / -1; padding:0; margin:6px 0 0; border:0; border-top:1px solid var(--line); }
.sci-complex-details summary { font-size:10px; color:var(--green); padding:7px 22px 4px 0; }
.sci-complex-details .sci-result-list { margin-top:8px; }
.sci-result-list { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.5fr); gap:6px 12px; margin:0; font-size:12px; font-weight:400; }
.sci-result-list dt { color:var(--muted); }
.sci-result-list dd { margin:0; text-align:right; font-weight:600; overflow-wrap:anywhere; }
.sci-table-wrap { max-height:260px; overflow:auto; width:100%; border-radius:5px; scrollbar-gutter:stable; }
.sci-table-wrap table { border-collapse:collapse; width:100%; font-size:13px; font-weight:400; color:var(--ink); }
.sci-table-wrap th { text-align:left; background:var(--light); }
.sci-table-wrap :is(td,th) { padding:6px 9px; border-bottom:1px solid var(--line); font-variant-numeric:tabular-nums; overflow-wrap:anywhere; }
.sci-table-wrap caption { font-size:10px; text-align:left; color:var(--muted); padding:0 0 6px; }
.sci-key-columns { display:grid; grid-template-columns:minmax(0,3fr) minmax(0,5fr); gap:10px; }
.sci-memory,.sci-function-keys { display:grid; grid-template-columns:repeat(6,minmax(0,1fr)); gap:4px; margin:0; }
.sci-core-keys { grid-template-columns:repeat(3,minmax(0,1fr)); }
.sci-memory button,.sci-function-keys button,.sci-number-keys button { border:1px solid var(--line); border-radius:6px; color:var(--ink); min-width:0; min-height:40px; padding:4px 2px; background:var(--paper); line-height:1.2; }
.sci-memory button { font-size:11px; color:var(--muted); }
.sci-function-keys button { font-size:12px; font-weight:600; background:var(--light); }
.sci-function-keys button[aria-pressed=true] { background:var(--sci-accent); color:#fff; }
.sci-number-keys { display:grid; grid-template-columns:repeat(5,minmax(0,1fr)); gap:4px; }
.sci-number-keys button { font-size:18px; font-weight:600; }
.sci-number-keys button[data-action] { color:var(--green); background:var(--light); font-size:12px; }
.sci-page button:hover:not(:disabled) { filter:brightness(.96); }
.sci-extras { display:flex; flex-wrap:wrap; gap:4px 12px; margin-top:5px; }
.sci-extras details { border:0; padding:0; margin:0; min-width:0; }
.sci-extras summary { color:var(--green); font-size:11px; padding:8px 24px 8px 0; }
.sci-extras details[open] { flex-basis:100%; }
.sci-extras details[open] .sci-function-keys,.sci-extras details[open] .sci-memory { margin:4px 0 7px; }
.sci-session-note { font-size:9px; color:var(--muted); margin:3px 0 0; line-height:1.5; }
.sci-history-panel { background:var(--bg); border:0; border-left:1px solid var(--line); border-radius:0 0 14px 0; padding:0; min-width:0; margin:0; }
.sci-history-panel>summary { padding:15px 34px 12px 14px; color:var(--ink); font-size:12px; font-weight:600; }
#sci-history-count { display:inline-block; margin-left:5px; color:var(--muted); font-size:10px; font-weight:400; }
.sci-history-content { padding:0 14px 14px; }
.sci-history-heading { display:flex; align-items:center; justify-content:space-between; gap:10px; }
.sci-history-heading h2 { font-size:12px; margin:0; }
.sci-history-heading button { border:0; background:transparent; font-size:10px; color:var(--muted); min-height:32px; }
#sci-history { max-height:180px; overflow-y:auto; margin:8px 0 12px; }
.sci-empty-history { color:var(--muted); font-size:11px; line-height:1.6; padding:4px 0; }
.sci-history-item { display:block; width:100%; text-align:left; padding:8px; margin:0 0 5px; border:1px solid var(--line); border-radius:6px; background:var(--paper); color:var(--ink); }
.sci-history-item small { display:block; font-size:8px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; }
.sci-history-item span { display:block; font-size:11px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin:3px 0; }
.sci-history-item strong { display:block; font-size:12px; overflow-wrap:anywhere; }
.sci-working { border:0; border-top:1px solid var(--line); padding:0; margin:0; }
.sci-working summary { font-size:11px; padding:10px 22px 10px 0; }
#sci-working { font-size:11px; line-height:1.65; color:var(--muted); margin:6px 0; max-height:100px; overflow:auto; overflow-wrap:anywhere; }
.sci-syntax { border:0; margin-top:7px; padding:0; }
.sci-syntax summary { font-size:11px; padding:8px 22px 8px 0; }
.sci-syntax p { font-size:11px; line-height:1.8; color:var(--muted); }
.sci-page code { font-family:ui-monospace,SFMono-Regular,Consolas,monospace; font-size:.92em; background:var(--light); border-radius:3px; padding:2px 4px; color:var(--ink); overflow-wrap:anywhere; }
body.dark .sci-page { --sci-display:#21382e; }
body.dark .sci-page .sci-tabs button[aria-selected=true],body.dark .sci-page .sci-calculate { color:#193325; }
@container sci-workbench (max-width:850px) { .sci-columns { grid-template-columns:minmax(0,1fr); } .sci-history-panel { border-left:0; border-top:1px solid var(--line); border-radius:0 0 14px 14px; } .sci-history-panel>summary { padding:12px 34px 12px 14px; } }
@container sci-workbench (max-width:650px) { .sci-tabs { grid-template-columns:repeat(4,minmax(0,1fr)); } }
@container sci-console (max-width:440px) {
    .sci-key-columns { grid-template-columns:minmax(0,1fr); gap:7px; }
    .sci-core-keys { grid-template-columns:repeat(6,minmax(0,1fr)); }
    .sci-fields.three { grid-template-columns:minmax(0,1fr); }
    .sci-page[data-expression-mode=true] .sci-screen { grid-template-columns:minmax(0,1fr); }
    .sci-page[data-expression-mode=true] #sci-result { grid-column:1; grid-row:1; }
    .sci-page[data-expression-mode=true] .sci-screen-top { grid-column:1; grid-row:2; padding-top:5px; }
}
@container sci-console (max-width:300px) { .sci-core-keys,.sci-extras .sci-function-keys { grid-template-columns:repeat(4,minmax(0,1fr)); } .sci-memory { grid-template-columns:repeat(3,minmax(0,1fr)); } .sci-fields.two { grid-template-columns:minmax(0,1fr); } }
@media (pointer:coarse), (max-width:620px) { .sci-tabs button,.sci-angle button,.sci-actions button,.sci-memory button,.sci-function-keys button,.sci-number-keys button,.sci-precision select { min-height:44px; } .sci-actions button { min-width:44px; } .sci-extras summary,.sci-history-panel>summary { min-height:44px; } }
@media (max-width:620px) {
    .sci-heading { margin:12px 0; } .sci-heading h1 { font-size:28px; } .sci-heading>p { font-size:11px; }
    .sci-console { padding:10px; }
    .sci-page[data-expression-mode=true] .sci-display { position:sticky; top:calc(var(--cf-topbar-offset,0px) + var(--cf-topbar-height,79px) + 40px); z-index:18; }
    #sci-expression { font-size:17px; }
}

.sci-content-nav { display:flex; flex-wrap:wrap; gap:16px; font-size:11px; padding:22px 0; margin:24px 0 0; border-bottom:1px solid var(--line); color:var(--muted); }
.sci-content-section { padding:38px 0 0; scroll-margin-top:110px; }
.sci-content-section h2 { font-size:24px; letter-spacing:-.025em; margin:0 0 18px; }
.sci-content-section h3 { font-size:15px; margin:0 0 10px; line-height:1.5; }
.sci-content-section p,.sci-steps { color:var(--muted); font-size:13px; line-height:1.85; }
.sci-steps { padding-left:22px; max-width:800px; }
.sci-steps li { padding:0 0 12px 7px; }
.sci-content-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.sci-content-grid article { background:var(--paper); border:1px solid var(--line); border-radius:10px; padding:22px; min-width:0; }
.sci-content-grid p { margin:0 0 10px; }
.sci-example-input { font-family:ui-monospace,SFMono-Regular,Consolas,monospace; color:var(--ink) !important; }
.sci-example button { border:0; background:transparent; padding:10px 0 0; color:var(--green); font-size:11px; min-height:40px; text-align:left; }
.sci-faq { border:0; border-bottom:1px solid var(--line); padding:0; }
.sci-faq summary { padding:16px 24px 16px 0; font-size:13px; line-height:1.6; font-weight:600; }
.sci-faq p { margin:0; padding:0 28px 20px 0; }
.sci-library-note { font-size:11px; color:var(--muted); margin:30px 0 0; }
.sci-library-note a { text-decoration:underline; text-underline-offset:3px; }
.sci-related { display:flex; flex-wrap:wrap; align-items:center; gap:14px 20px; margin-top:30px; border:1px solid var(--line); border-radius:10px; background:var(--paper); padding:20px; font-size:12px; }
.sci-related span { margin-right:auto; color:var(--muted); font-size:10px; text-transform:uppercase; letter-spacing:.1em; }
.sci-related a { color:var(--green); text-decoration:underline; text-underline-offset:4px; }

@media (max-width:620px) { .sci-content-grid { grid-template-columns:minmax(0,1fr); } .sci-content-section h2 { font-size:22px; } .sci-content-section { padding-top:30px; } .sci-content-nav { gap:10px 16px; } }

@media print { .sci-tabs,.sci-toolbar,.sci-actions,#sci-keypad,.sci-history-panel,.sci-example button { display:none; } .sci-columns { display:block; } .sci-display { position:static !important; } .sci-table-wrap { max-height:none; overflow:visible; } .sci-page[data-expression-mode=true] #sci-result { max-height:none; overflow:visible; } .sci-content-grid article { break-inside:avoid; } }

/* Keep quick mode changes and real page links as separate, accessible controls. */
.sci-mode-navigation { position:relative; }
.sci-mode-pages { position:absolute; inset:7px; display:grid; grid-template-columns:repeat(8,minmax(0,1fr)); gap:3px; pointer-events:none; }
.sci-mode-pages a { display:flex; align-items:center; justify-content:center; justify-self:end; width:24px; min-height:24px; color:var(--green); pointer-events:auto; font-size:13px; border-radius:4px; }
.sci-mode-pages a:hover { background:var(--light); }
.sci-mode-pages a.is-active { color:#fff; }
.sci-mode-pages a.is-active:hover { background:rgba(255,255,255,.15); }
.sci-content-grid h3 a { color:var(--green); text-decoration:underline; text-underline-offset:3px; }
@container sci-workbench (max-width:650px) { .sci-mode-pages { grid-template-columns:repeat(4,minmax(0,1fr)); } .sci-tabs button { font-size:10px; } }
@container sci-workbench (max-width:330px) { .sci-tabs,.sci-mode-pages { grid-template-columns:repeat(3,minmax(0,1fr)); } }
@media print { .sci-mode-navigation { display:none; } }