:root{--bg: #eff3f8;--panel: #ffffff;--panel-soft: #f7fafe;--line: #d6deea;--text: #18293f;--muted: #5f738d;--nav-bg: #14243a;--nav-text: #d4dfed;--accent: #2f80ed;--accent-strong: #1e63c0;--radius: 14px;--radius-sm: 10px;--shadow: 0 16px 38px rgba(10, 36, 66, .08)}*{box-sizing:border-box}body{margin:0;font-family:Plus Jakarta Sans,Segoe UI,sans-serif;background:radial-gradient(circle at 0% 0%,#f9fbff 0%,var(--bg) 48%,#e7edf5 100%);color:var(--text)}.app-shell{min-height:100vh;display:grid;grid-template-columns:270px 1fr}.sidebar{background:linear-gradient(180deg,#182c45 0%,var(--nav-bg) 100%);color:var(--nav-text);padding:28px 20px;position:sticky;top:0;height:100vh;border-right:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column}.sidebar-logo-wrap{padding:4px 2px 6px;margin-bottom:8px}.sidebar-logo{display:block;width:205px;max-width:100%;height:auto}.brand{font-size:.94rem;font-weight:800;letter-spacing:.03em;text-transform:uppercase;margin-bottom:10px}.brand-dot{display:inline-block;width:12px;height:12px;border-radius:999px;margin-right:9px;background:linear-gradient(130deg,#3ea7ff,#52d4b8)}.sidebar p{margin:0 0 18px;color:#aebfd4;font-size:.88rem;line-height:1.5}.side-link-notes{margin-top:10px;display:grid;gap:10px}.side-link-notes p{margin:0;color:#aebfd4;font-size:.84rem;line-height:1.45}.side-link-notes strong{color:#e7effb;font-weight:700}.side-nav{display:grid;gap:8px}.side-nav a{color:var(--nav-text);text-decoration:none;padding:10px 12px;border-radius:9px;font-weight:600;font-size:.9rem;border:1px solid transparent;transition:.18s ease}.side-nav a:hover,.side-nav a:focus-visible{background:#ffffff14;border-color:#ffffff1f;outline:none}.side-nav-item{display:grid;gap:4px}.side-nav-item p{margin:0 10px 2px;color:#aebfd4;font-size:.82rem;line-height:1.4}.side-feedback-wrap{margin-top:auto;padding-top:14px}.side-ad-wrap{margin-top:12px}.side-feedback-btn{display:inline-flex;width:100%;justify-content:center;align-items:center;min-height:40px;border-radius:9px;border:1px solid rgba(255,255,255,.18);background:#ffffff17;color:#eef5ff;text-decoration:none;font-size:.88rem;font-weight:700;transition:background .18s ease,border-color .18s ease}.side-feedback-btn:hover,.side-feedback-btn:focus-visible{background:#ffffff29;border-color:#ffffff42;outline:none}.side-credit{margin:8px 2px 0;color:#9fb0c7;font-size:.74rem;line-height:1.35;text-align:center}.side-credit a{color:#cfe2ff;text-decoration:none}.side-credit a:hover,.side-credit a:focus-visible{text-decoration:underline}.side-nav a[aria-current=page]{background:#ffffff1f;border-color:#ffffff29}.main{padding:24px}.topbar{background:#ffffffd1;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}h1{margin:0;font-size:clamp(1.2rem,1rem + 1vw,1.8rem)}.topbar p{margin:5px 0 0;color:var(--muted);font-size:.92rem}.topbar-actions{display:flex;align-items:center;gap:8px}.layout{margin-top:18px;display:grid;grid-template-columns:minmax(280px,360px) 1fr;gap:16px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;animation:rise .42s ease both}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.panel h2{margin:0 0 12px;font-size:1.07rem}.form-grid{display:grid;gap:10px}.form-grid label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:4px;font-weight:600}input,textarea{width:100%;padding:10px 12px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fff;color:var(--text);font:inherit;transition:border-color .16s ease,box-shadow .16s ease}textarea{min-height:86px;resize:vertical}input:focus,textarea:focus{border-color:#7ca8e8;box-shadow:0 0 0 3px #2f80ed24;outline:none}.canvas-panel{display:grid;gap:12px;position:relative}.scene-header{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;flex-wrap:wrap}.scene-header h2{margin:0}.scene-header-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;margin-left:auto}#diagram:focus{outline:none}.toolbar{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px;align-items:start}.tool-category{border:1px solid var(--line);background:var(--panel-soft);border-radius:10px;padding:9px;display:grid;gap:8px;align-content:start}.tool-category-title{font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}.tool-buttons{display:flex;flex-wrap:wrap;gap:7px;align-items:flex-start;align-content:flex-start}.color-popover{position:absolute;z-index:1200;width:190px;border:1px solid var(--line);border-radius:10px;background:#fff;box-shadow:0 16px 30px #0a24422e;padding:8px;display:grid;gap:7px}.color-popover[hidden]{display:none}.color-option{background:#fff;color:var(--text);border:1px solid var(--line);border-radius:8px;box-shadow:none;padding:8px 10px;display:flex;align-items:center;justify-content:flex-start;gap:8px;width:100%;font-size:.87rem;letter-spacing:0}.color-option:hover{transform:none;box-shadow:none;border-color:#aac2e7;background:#f3f7ff}.color-swatch{width:14px;height:14px;border-radius:999px;border:1px solid rgba(0,0,0,.2);flex-shrink:0}button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;line-height:1.2;border:0;border-radius:10px;background:linear-gradient(135deg,var(--accent),var(--accent-strong));color:#fff;font-weight:700;letter-spacing:.01em;cursor:pointer;padding:10px 12px;transition:transform .15s ease,box-shadow .15s ease;font-family:inherit}button:hover{transform:translateY(-1px);box-shadow:0 8px 16px #1e63c038}button.secondary{background:#edf4ff;color:#1a4f91;border:1px solid #b8cbea;box-shadow:none}button.secondary:hover{box-shadow:0 6px 12px #1e63c024}button.active-tool{background:linear-gradient(135deg,#1f6fd3,#1452a5);box-shadow:inset 0 0 0 1px #ffffff3d,0 8px 16px #1452a53d}#canvas-wrapper{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel-soft);min-height:360px}#accident-canvas{display:block}.instructions{border:1px solid var(--line);background:var(--panel-soft);border-radius:12px;padding:12px;color:var(--muted);font-size:.9rem;line-height:1.55}.instructions p{margin:0 0 8px}.instructions p:last-child{margin-bottom:0}.foot{margin-top:14px;color:var(--muted);font-size:.8rem;text-align:center}.faq-panel{margin-top:16px}.faq-panel h2{margin-bottom:10px}.faq-list{display:grid;gap:8px}.faq-list details{border:1px solid var(--line);border-radius:10px;background:var(--panel-soft);padding:10px 12px}.faq-list summary{cursor:pointer;font-size:.9rem;font-weight:700;color:#1d3553;list-style:none;position:relative;padding-right:18px}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:0;top:0;color:#2f80ed;font-weight:700}.faq-list details[open] summary:after{content:"-"}.faq-list p{margin:8px 0 0;font-size:.9rem;color:var(--muted);line-height:1.55}body.modal-open{overflow:hidden}.modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0b192d8a;display:none;align-items:center;justify-content:center;padding:18px;z-index:1000}.modal.show{display:flex}.modal-card{width:min(760px,100%);max-height:min(86vh,820px);overflow:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 20px 45px #0a244238;padding:16px 16px 14px}.modal-header{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px}.modal-title{margin:0;font-size:1.05rem}.modal-close{min-width:38px;padding:8px 10px;line-height:1}.modal-content{color:#264059;line-height:1.62;font-size:.93rem}.modal-content p{margin:0}.modal-content strong{color:#1d3553}.modal-trust{margin-top:12px;border:1px solid var(--line);border-radius:10px;background:#f7fbff;padding:10px 12px}.modal-trust h4{margin:0 0 6px;font-size:.9rem;color:#1d3553}.modal-trust ul{margin:0;padding-left:18px;display:grid;gap:6px}body.sketch-redesign .main{padding:14px 16px 18px}body.sketch-redesign .redesign-topbar{position:static;z-index:20;padding:12px 14px;border-radius:12px}body.sketch-redesign .topbar-brand h1{margin:0;font-size:1.8rem;line-height:1.1}body.sketch-redesign .topbar-brand p{margin-top:6px;font-size:.9rem}body.sketch-redesign .topbar-actions{gap:8px}body.sketch-redesign .topbar-actions button{min-height:38px;font-size:.84rem;padding:8px 12px;border-radius:9px;white-space:nowrap}body.sketch-redesign .redesign-layout{margin-top:10px;grid-template-columns:1fr;gap:12px}body.sketch-redesign .workspace-panel{padding:10px}body.sketch-redesign .workspace-grid{display:grid;grid-template-columns:minmax(240px,270px) minmax(520px,1fr) minmax(320px,380px);gap:10px;align-items:stretch}body.sketch-redesign .workspace-tools{max-height:none;height:auto;min-height:0;overflow:visible;padding-right:0;display:grid;align-content:start;gap:8px}body.sketch-redesign .workspace-tools .toolbar{grid-template-columns:1fr;gap:8px}body.sketch-redesign .workspace-tools .tool-category{padding:8px;gap:7px;border-radius:10px}body.sketch-redesign .workspace-tools .tool-category-title{text-transform:none;letter-spacing:0;font-size:.95rem;font-weight:700;color:#223a59}body.sketch-redesign .workspace-tools .tool-buttons{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}body.sketch-redesign .workspace-tools .tool-buttons button{width:100%;min-height:28px;border-radius:8px;font-size:.7rem;padding:3px 8px;background:#edf4ff;color:#1a4f91;border:1px solid #b8cbea;box-shadow:none}body.sketch-redesign .workspace-tools .tool-buttons button:hover{box-shadow:0 6px 12px #1e63c024}body.sketch-redesign .workspace-tools .tool-buttons button.active-tool{background:#dbe9ff;border-color:#96b6e7;color:#174887}body.sketch-redesign .workspace-canvas{border:1px solid var(--line);border-radius:12px;background:#f8fbff;padding:8px;display:grid;gap:8px;align-content:start}body.sketch-redesign .workspace-canvas .scene-header{min-height:26px;align-items:center}body.sketch-redesign .workspace-canvas .scene-header h2{font-size:1.03rem;color:#1d3553}body.sketch-redesign #canvas-wrapper{min-height:680px;border-radius:10px}body.sketch-redesign .instructions{margin-top:0;padding:10px;border-radius:10px;font-size:.85rem}body.sketch-redesign .workspace-details{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;display:grid;grid-template-rows:auto 1fr;min-height:780px}body.sketch-redesign .details-tab{border-bottom:1px solid var(--line);padding:10px 12px;font-size:.97rem;font-weight:700;color:#1f66ce;background:#f7fbff}body.sketch-redesign .workspace-details .form-grid{padding:12px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;align-content:start}body.sketch-redesign .workspace-details .form-grid>div:nth-child(3),body.sketch-redesign .workspace-details .form-grid>div:nth-child(6),body.sketch-redesign .workspace-details .form-grid>div:nth-child(7),body.sketch-redesign .workspace-details .form-grid>div:nth-child(8){grid-column:1 / -1}body.sketch-redesign .workspace-details textarea{min-height:100px}body.sketch-redesign .faq-panel{margin-top:12px}@media (max-width: 1500px){body.sketch-redesign .workspace-grid{grid-template-columns:minmax(225px,245px) minmax(420px,1fr) minmax(300px,340px)}body.sketch-redesign #canvas-wrapper{min-height:620px}}@media (max-width: 1280px){body.sketch-redesign .workspace-grid{grid-template-columns:minmax(220px,250px) minmax(420px,1fr)}body.sketch-redesign .workspace-details{grid-column:1 / -1;min-height:auto}body.sketch-redesign #canvas-wrapper{min-height:560px}}@media (max-width: 1120px){.app-shell{grid-template-columns:1fr}.sidebar{height:auto;position:static;padding-bottom:16px}.side-nav{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.layout{grid-template-columns:1fr}.main{padding:14px}}