.workbench{padding:76px 0;border-top:1px solid var(--line)}
.workbench-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}.workbench-head h2{margin:8px 0 0;font-size:clamp(2.2rem,5vw,4.5rem);line-height:.95;letter-spacing:-.06em}.offline-pill{padding:9px 12px;border:1px solid rgba(186,252,69,.35);border-radius:999px;color:var(--lime);font-size:.76rem;font-weight:900;white-space:nowrap}
.workspace{border:1px solid var(--line);border-radius:24px;overflow:hidden;background:linear-gradient(145deg,#121815,#0c100e);box-shadow:var(--shadow)}.workspace-tabs{display:flex;gap:6px;padding:10px;overflow:auto;border-bottom:1px solid var(--line);background:#0d110f;scrollbar-width:none}.workspace-tabs button{flex:1;min-width:max-content;padding:12px 15px;border:1px solid transparent;border-radius:11px;background:transparent;color:var(--muted);font-weight:850;cursor:pointer}.workspace-tabs button[aria-selected="true"]{background:var(--lime);color:var(--ink)}.workspace-panel{display:none;padding:24px}.workspace-panel.active{display:block}.panel-intro{display:flex;justify-content:space-between;gap:20px;align-items:start;margin-bottom:20px}.panel-intro h3{margin:0;font-size:1.55rem}.panel-intro p{margin:5px 0 0;color:var(--muted)}
.calculator-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.quick-calc{position:relative;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}.quick-calc h4{margin:0 38px 14px 0;font-size:1.08rem}.fav-btn{position:absolute;right:12px;top:12px;width:34px;height:34px;border:1px solid var(--line);border-radius:9px;background:#0c100e;color:var(--muted);cursor:pointer;font-size:1.15rem}.fav-btn.active{border-color:var(--lime);color:var(--lime)}.calc-fields{display:grid;grid-template-columns:1fr 1fr;gap:9px}.calc-fields label,.wide-field label{color:var(--muted);font-size:.76rem;font-weight:750}.calc-fields input,.calc-fields select,.wide-field input,.wide-field textarea,.wide-field select{width:100%;min-height:46px;margin-top:5px;padding:10px 11px;border:1px solid var(--line);border-radius:10px;background:#090d0b;color:var(--text);outline:none}.wide-field textarea{min-height:95px;resize:vertical}.calc-fields input:focus,.calc-fields select:focus,.wide-field input:focus,.wide-field textarea:focus{border-color:var(--lime)}.quick-result{margin-top:13px;padding:12px;border-left:3px solid var(--orange);border-radius:4px 10px 10px 4px;background:#241b14;color:var(--muted)}.quick-result strong{display:block;color:var(--text);font-size:1.28rem}.recent-box{margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#0c100e}.recent-box h4{margin:0 0 10px}.recent-list{display:flex;gap:8px;overflow:auto}.recent-item{min-width:210px;padding:10px;border-radius:10px;background:var(--panel2);font-size:.78rem;color:var(--muted)}.recent-item b{display:block;color:var(--text)}
.project-layout,.material-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px}.form-card,.list-card{padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}.form-card h4,.list-card h4{margin:0 0 14px}.stack{display:grid;gap:11px}.action-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}.mh-button{min-height:44px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:#141a17;color:var(--text);font-weight:850;cursor:pointer}.mh-button.primary{border-color:var(--lime);background:var(--lime);color:var(--ink)}.mh-button.danger{color:#ffb29f}.empty-state{padding:28px 16px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:12px}.saved-list{display:grid;gap:9px}.saved-item{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:12px;border-radius:11px;background:var(--panel2)}.saved-item small{display:block;color:var(--muted)}.saved-item-actions{display:flex;gap:6px}.icon-button{width:38px;height:38px;border:1px solid var(--line);border-radius:9px;background:#0c100e;color:var(--text);cursor:pointer}.photo-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}.photo-preview img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.material-table{width:100%;border-collapse:collapse}.material-table th,.material-table td{padding:10px 8px;text-align:left;border-bottom:1px solid var(--line);font-size:.86rem}.material-table th{color:var(--muted)}.material-table td:last-child{text-align:right}.material-summary{display:flex;justify-content:space-between;gap:15px;margin-top:14px;color:var(--muted)}
.study-track-tabs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px}.study-track-tabs button{display:grid;gap:3px;padding:16px;text-align:left;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--text);cursor:pointer}.study-track-tabs button[aria-selected="true"]{border-color:var(--lime);background:linear-gradient(135deg,rgba(186,252,69,.15),var(--panel))}.study-track-tabs b{font-size:1rem}.study-track-tabs small{color:var(--muted)}.study-heading{display:flex;justify-content:space-between;gap:20px;align-items:end;margin:4px 0 18px;padding-bottom:16px;border-bottom:1px solid var(--line)}.study-heading h4{margin:4px 0;font-size:1.45rem}.study-heading p{max-width:720px;margin:0;color:var(--muted)}.study-kicker{color:var(--orange);font-size:.75rem;font-weight:950;text-transform:uppercase;letter-spacing:.08em}.question-count{padding:8px 11px;border-radius:999px;background:var(--panel2);color:var(--muted);font-size:.76rem;font-weight:800;white-space:nowrap}.column-title{margin:0 0 10px}.knowledge-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:18px;align-items:start}.knowledge-list{display:grid;gap:9px}.knowledge-card{padding:14px;border:1px solid var(--line);border-radius:12px;background:var(--panel)}.knowledge-card summary{display:flex;gap:10px;align-items:center;cursor:pointer;font-weight:850}.knowledge-card summary span{color:var(--orange);font-size:.7rem}.knowledge-card p{margin:10px 0 0;color:var(--muted);line-height:1.55}.quiz-card{position:sticky;top:18px;padding:20px;border-radius:18px;background:var(--lime);color:var(--ink)}.quiz-top{display:flex;justify-content:space-between;gap:12px;margin-bottom:16px;font-size:.73rem;font-weight:900}.quiz-top span{max-width:58%}.quiz-card h4{margin:0 0 8px;font-size:1.15rem;line-height:1.35}.quiz-options{display:grid;gap:8px;margin-top:15px}.quiz-options button{padding:11px;border:1px solid rgba(0,0,0,.2);border-radius:9px;background:rgba(255,255,255,.55);color:var(--ink);font-weight:800;text-align:left;cursor:pointer}.quiz-options button.correct{background:#fff;border-color:#1d6b29}.quiz-options button.wrong{background:#ffd5ca;border-color:#9b2e17}.quiz-options button:disabled{cursor:default;opacity:1}.quiz-feedback{min-height:42px;margin-top:10px;font-weight:850}.quiz-actions{display:flex;gap:8px;flex-wrap:wrap}.quiz-card .mh-button{border-color:rgba(0,0,0,.25);background:var(--ink);color:var(--lime)}.quiz-card .quiz-restart{background:transparent;color:var(--ink)}.quiz-note{display:block;margin-top:14px;line-height:1.4;opacity:.72}.pro-strip{display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center;margin-top:18px;padding:20px;border:1px solid rgba(186,252,69,.35);border-radius:16px;background:linear-gradient(110deg,rgba(186,252,69,.1),rgba(255,157,61,.07))}.pro-strip h3{margin:0 0 6px}.pro-strip p{margin:0;color:var(--muted)}.pro-tag{padding:10px 13px;border-radius:999px;background:var(--orange);color:var(--ink);font-size:.75rem;font-weight:950;white-space:nowrap}
.install-banner{position:fixed;left:16px;right:16px;bottom:16px;z-index:90;display:none;max-width:560px;margin:auto;padding:13px;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);border-radius:14px;background:#151b18;box-shadow:var(--shadow)}.install-banner.show{display:flex}.install-banner b{display:block}.install-banner small{color:var(--muted)}
@media(max-width:900px){.calculator-grid{grid-template-columns:1fr 1fr}.project-layout,.material-layout,.knowledge-grid{grid-template-columns:1fr}.quiz-card{position:static}}@media(max-width:620px){.workbench{padding:54px 0}.workbench-head,.panel-intro{display:block}.offline-pill{display:inline-block;margin-top:13px}.workspace-panel{padding:16px}.calculator-grid{grid-template-columns:1fr}.calc-fields{grid-template-columns:1fr 1fr}.study-track-tabs{grid-template-columns:1fr}.study-heading{display:block}.question-count{display:inline-block;margin-top:12px}.pro-strip{grid-template-columns:1fr}.material-table th:nth-child(3),.material-table td:nth-child(3){display:none}.photo-preview{grid-template-columns:repeat(2,1fr)}}
@media print{header,.hero,.ticker,.pro,.depths,.money,.tools,footer,.workspace-tabs,.workbench-head,.panel-intro,.form-card,.action-row,.pro-strip,.install-banner{display:none!important}body{background:#fff;color:#111}.workbench{padding:0;border:0}.workspace{border:0;box-shadow:none;background:#fff}.workspace-panel{display:none!important}.workspace-panel.active{display:block!important;padding:0}.list-card,.recent-box{border:0;background:#fff;color:#111}.material-table th,.material-table td{color:#111;border-color:#ccc}.saved-item{background:#f2f2f2;color:#111}.saved-item small{color:#444}}