@import url("category-tools.css");
.tool-page-shell{max-width:1120px;margin:0 auto;padding:24px 18px 58px}.tool-page-head{display:flex;gap:14px;align-items:center;margin:8px 0 18px}.tool-page-icon{width:58px;height:58px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(135deg,#eaf3ff,#e7fffb);font-size:30px;border:1px solid #dbe7f3;box-shadow:0 12px 32px rgba(37,99,235,.08)}.tool-page-head h1{margin:0;font-size:clamp(28px,4vw,44px);letter-spacing:-1px}.tool-page-head p{margin:5px 0 0;color:#64748b;line-height:1.55}.tool-frame-wrap{background:#fff;border:1px solid #dfe7f1;border-radius:24px;box-shadow:0 20px 55px rgba(15,23,42,.08);overflow:hidden}.tool-frame{display:block;width:100%;border:0;min-height:540px;background:#fff}.tool-breadcrumb{font-size:13px;color:#64748b;margin:0 0 14px}.tool-breadcrumb a{color:#2563eb;text-decoration:none;font-weight:800}.tool-tip{margin:14px 0 0;color:#64748b;font-size:13px;text-align:center}@media(max-width:640px){.tool-page-shell{padding:18px 12px 44px}.tool-page-head{align-items:flex-start}.tool-page-icon{width:48px;height:48px;font-size:24px;border-radius:15px}.tool-frame-wrap{border-radius:18px}}

/* DoKitly Build 2 — FULL STANDALONE TOOL POLISH */
.standalone-tool-page{background:radial-gradient(circle at 10% 0%,rgba(37,99,235,.08),transparent 30%),radial-gradient(circle at 90% 8%,rgba(20,184,166,.08),transparent 30%),#f8fbff}
.standalone-tool-page .it-header{background:rgba(255,255,255,.82);backdrop-filter:blur(16px)}
.tool-page-shell{position:relative}.tool-page-head{padding:18px 20px;border:1px solid rgba(148,163,184,.18);border-radius:22px;background:rgba(255,255,255,.78);backdrop-filter:blur(14px);box-shadow:0 16px 45px rgba(15,23,42,.055)}
.tool-page-icon{background:linear-gradient(135deg,#eaf3ff,#e7fffb);box-shadow:0 12px 28px rgba(37,99,235,.11)}
.tool-frame-wrap{background:rgba(255,255,255,.92);border-color:rgba(148,163,184,.22);box-shadow:0 24px 70px rgba(15,23,42,.09)}
.tool-tip{display:inline-flex;align-items:center;gap:6px;position:relative;left:50%;transform:translateX(-50%);padding:8px 11px;border-radius:999px;background:#ecfeff;color:#0f766e;border:1px solid rgba(20,184,166,.16);font-weight:700}

/* Advanced Math Solver */
.math-shell{max-width:1060px;margin:0 auto}.math-card{background:var(--card,#fff);border:1px solid var(--line,#dfe7f1);border-radius:24px;padding:22px;box-shadow:0 18px 50px rgba(15,23,42,.07)}.math-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.math-field{display:grid;gap:6px}.math-field.wide{grid-column:1/-1}.math-field label{font-size:12px;font-weight:900;color:#475569}.math-field input,.math-field select,.math-field textarea{width:100%;border:1px solid #d7e0eb;border-radius:13px;padding:11px 12px;background:#fff;font:inherit;color:#0f172a}.math-field textarea{min-height:126px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.math-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}.math-primary{border:0;border-radius:13px;padding:12px 17px;color:#fff;font-weight:900;cursor:pointer;background:linear-gradient(135deg,#1769ff,#14b8a6);box-shadow:0 10px 24px rgba(23,105,255,.18)}.math-keypad{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0}.math-keypad button{border:1px solid #dce5ef;border-radius:10px;padding:7px 10px;background:#f8fbff;font-weight:800;cursor:pointer}.math-output{margin-top:16px;padding:16px;border:1px dashed #cbd5e1;border-radius:16px;background:#f8fbff;color:#475569;min-height:78px}.math-output.has-result{border-style:solid;background:linear-gradient(135deg,#f8fbff,#effcfb)}.math-result-title{font-size:11px;text-transform:uppercase;letter-spacing:.09em;font-weight:950;color:#0f766e}.math-result-main{font:800 20px/1.45 ui-monospace,SFMono-Regular,Consolas,monospace;margin-top:7px;overflow-wrap:anywhere;color:#0f172a}.math-subresult{margin-top:12px;padding-top:12px;border-top:1px solid #dfe7f1;display:grid;gap:4px}.math-subresult b{font-size:11px}.matrix-view{display:grid;gap:4px;margin-top:12px;width:max-content;max-width:100%;overflow:auto;padding:10px 14px;border-left:3px solid #0f766e;border-right:3px solid #0f766e}.matrix-view>div{display:flex;gap:6px}.matrix-view span{min-width:58px;text-align:center;font:750 14px ui-monospace,monospace}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:10px}.stat-grid span{padding:10px;border:1px solid #e2e8f0;border-radius:12px;background:#fff;font-size:12px}.stat-grid b{display:block;font-size:10px;color:#64748b;margin-bottom:4px}.bound-fields{display:none}.show-bounds .bound-fields{display:grid}.matrix-b,.matrix-vector{display:none}.matrix-needs-b .matrix-b{display:grid}.matrix-needs-vector .matrix-vector{display:grid}.num-bounds,.num-x0,.num-intervals{display:none}body[data-num-method="bisection"] .num-bounds,body[data-num-method="trapezoid"] .num-bounds,body[data-num-method="simpson"] .num-bounds{display:grid}body[data-num-method="newton"] .num-x0{display:grid}body[data-num-method="trapezoid"] .num-intervals,body[data-num-method="simpson"] .num-intervals{display:grid}.math-hub{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.math-hub a{display:block;text-decoration:none;color:inherit;padding:17px;border:1px solid #dfe7f1;border-radius:18px;background:linear-gradient(145deg,#fff,#f8fbff);transition:.18s;box-shadow:0 8px 22px rgba(15,23,42,.04)}.math-hub a:hover{transform:translateY(-3px);border-color:rgba(20,184,166,.35);box-shadow:0 15px 32px rgba(37,99,235,.09)}.math-hub b,.math-hub small{display:block}.math-hub b{font-size:16px}.math-hub small{color:#64748b;line-height:1.45;margin-top:5px}.seo-copy{margin:26px 0;padding:20px;border:1px solid #e2e8f0;border-radius:20px;background:#fff}.seo-copy h2{margin:0 0 8px}.seo-copy p,.seo-copy li{color:#64748b;line-height:1.65}.seo-copy ul{padding-left:20px}
@media(max-width:760px){.math-grid{grid-template-columns:1fr}.math-field.wide{grid-column:auto}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.math-hub{grid-template-columns:1fr}.math-card{padding:15px;border-radius:19px}}

/* Build 2 — compact public tool shell: the tool should be usable before scrolling */
@media(min-width:721px){
  .standalone-tool-page .it-head-inner{height:58px!important}.standalone-tool-page .it-brand img{width:205px!important;max-height:48px!important}
  .tool-page-shell{max-width:1180px;padding:10px 18px 28px!important}
  .tool-breadcrumb{margin:0 0 6px!important;font-size:11px!important}
  .tool-page-head{gap:9px!important;margin:0 0 8px!important;padding:8px 11px!important;border-radius:15px!important;box-shadow:0 8px 24px rgba(15,23,42,.04)!important}
  .tool-page-icon{width:38px!important;height:38px!important;border-radius:11px!important;font-size:19px!important;box-shadow:none!important}
  .tool-page-head h1{font-size:24px!important;letter-spacing:-.45px!important;line-height:1.05!important}
  .tool-page-head p{font-size:12px!important;line-height:1.3!important;margin-top:2px!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:820px}
  .tool-frame-wrap{border-radius:17px!important;box-shadow:0 14px 38px rgba(15,23,42,.07)!important}
  .tool-frame{min-height:390px!important}
  .tool-tip{margin-top:8px!important;padding:5px 9px!important;font-size:11px!important}
}
@media(max-width:720px){.tool-page-shell{padding:10px 10px 26px!important}.tool-breadcrumb{margin-bottom:6px!important}.tool-page-head{padding:8px 9px!important;margin:0 0 8px!important;border-radius:14px!important}.tool-page-head h1{font-size:21px!important}.tool-page-head p{font-size:12px!important;line-height:1.3!important}.tool-page-icon{width:36px!important;height:36px!important;font-size:18px!important}.tool-frame{min-height:380px!important}.tool-tip{margin-top:8px!important;font-size:11px!important}}

/* Matrix grid input */
.matrix-dim-toolbar{display:flex;align-items:end;gap:10px;flex-wrap:wrap;margin-bottom:14px}.matrix-dim-toolbar>div{display:grid;gap:5px}.matrix-dim-toolbar label,.matrix-dim-mini label{font-size:12px;font-weight:800}.matrix-dim-toolbar select,.matrix-dim-mini select{min-height:38px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--text);padding:6px 9px}.matrix-workspace{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}.matrix-workspace section{min-width:0}.matrix-workspace h2{font-size:14px;margin:0 0 8px}.matrix-input-grid{display:grid;gap:6px;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--soft)}.matrix-row{display:grid;grid-template-columns:repeat(var(--cols),minmax(54px,1fr));gap:6px}.matrix-row input,.matrix-vector-grid input{width:100%;min-width:0;text-align:center;font-variant-numeric:tabular-nums;font-weight:750;border:1px solid var(--line);border-radius:9px;background:var(--card);color:var(--text);padding:10px 6px}.matrix-row input:focus,.matrix-vector-grid input:focus{outline:2px solid #21a9c7;outline-offset:1px}.matrix-dim-mini{display:flex;gap:8px;margin-bottom:8px}.matrix-vector-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(58px,1fr));gap:6px;padding:12px;border:1px solid var(--line);border-radius:14px;background:var(--soft)}@media(max-width:760px){.matrix-workspace{grid-template-columns:1fr}.matrix-row{overflow-x:auto}}

/* New repeat-use tools */
.quiz-meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12px}.quiz-question{font-size:20px;margin:18px 0 12px}.quiz-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.quiz-options button{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:12px;padding:13px;text-align:left;font-weight:750;cursor:pointer}.quiz-options button.correct{border-color:#16a34a;background:#ecfdf3}.quiz-options button.wrong{border-color:#dc2626;background:#fff1f2}.quiz-feedback{display:grid;gap:3px;margin-top:12px;min-height:46px}.quiz-feedback span{color:var(--muted);font-size:12px}.quiz-review{display:grid;gap:7px;margin-top:12px}.barcode-preview{display:grid;place-items:center;min-height:180px;margin:12px 0;padding:16px;border:1px solid var(--line);border-radius:14px;background:white;overflow:auto}.barcode-preview svg{max-width:100%}.analyzer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:12px}.analyzer-card{border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--soft);display:grid;gap:5px}.analyzer-card span{color:var(--muted);font-size:12px;overflow-wrap:anywhere}.platform-trends{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:14px}.platform-trends a{border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--card);color:var(--text);text-decoration:none;display:grid;gap:4px}.platform-trends a:hover{border-color:#54b4cb}.platform-trends small{color:var(--muted)}@media(max-width:700px){.quiz-options,.analyzer-grid,.platform-trends{grid-template-columns:1fr}}