:root{--bg:#101714;--surface:#19231e;--surface2:#1e2b24;--paper:#233329;--line:#32433a;--text:#edf1e8;--muted:#a4b4a8;--accent:#c3e9b5;--accentText:#18271a;--warm:#e6b986;--danger:#f5a69d;--shadow:0 18px 50px #0002;--radius:20px;--mono:ui-monospace,SFMono-Regular,Consolas,monospace;color-scheme:dark}
:root[data-theme=light]{--bg:#f5f5ee;--surface:#fffef8;--surface2:#ecefe5;--paper:#e4eade;--line:#d2d9cc;--text:#1e2d23;--muted:#637563;--accent:#366946;--accentText:#fff;--warm:#986735;--danger:#a74037;--shadow:0 16px 40px #2d422b0c;color-scheme:light}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--warm);outline-offset:4px}h1,h2,h3,p{margin:0}h1{font-size:clamp(32px,4vw,56px);font-weight:620;line-height:1.25;letter-spacing:-1.4px}h2{font-size:25px;line-height:1.35;letter-spacing:-.5px}h3{font-size:17px;font-weight:620}p{color:var(--muted)}small{font-size:12px}code{font:13px var(--mono);background:var(--surface2);padding:2px 5px;border-radius:5px}.shell{display:flex;min-height:100vh}.sidebar{width:245px;position:fixed;inset:0 auto 0 0;padding:30px 22px 22px;background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;z-index:5}.brand{display:flex;gap:12px;align-items:center;font-size:17px;font-weight:600;line-height:1.4}.brand small{display:block;font-size:12px;font-weight:400;color:var(--muted);letter-spacing:.4px}.brand-mark{position:relative;width:39px;height:41px;background:var(--accent);color:var(--accentText);border-radius:13px;text-align:center;font-size:28px;font-weight:700;line-height:41px}.brand-mark span{position:absolute;top:-8px;right:2px;font-size:30px;color:var(--warm)}.sidebar-label{font-size:10px;letter-spacing:1px;color:var(--muted);margin:43px 8px 14px}.sidebar nav{display:flex;flex-direction:column;gap:7px}.sidebar nav a{display:flex;gap:13px;padding:11px 13px;border-radius:11px;font-size:14px;color:var(--muted)}.sidebar nav a span{font-size:17px;min-width:18px}.sidebar nav a:hover,.sidebar nav a.active{color:var(--text);background:var(--surface2)}.sidebar nav a.active{box-shadow:inset 3px 0 var(--accent)}.sidebar-bottom{margin-top:auto;padding:20px 10px 0}.local-badge{font-size:12px;color:var(--accent);display:flex;align-items:center;gap:8px}.local-badge i{width:6px;height:6px;background:var(--accent);border-radius:50%}.sidebar-bottom p{font-size:12px;line-height:1.9;margin:12px 0 25px}.version{font-size:11px;color:var(--muted)}.page{margin-left:245px;width:calc(100% - 245px);min-width:0}.topbar{height:83px;padding:0 42px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px}.breadcrumb{font-size:10px;letter-spacing:2px;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:19px}.storage-pill{font-size:11px;color:var(--muted)}.icon-button{border:1px solid var(--line);color:var(--text);background:transparent;border-radius:10px;width:35px;height:35px}.text-link{font-size:12px;color:var(--muted)}#app{padding:36px 42px 60px;max-width:1450px;margin:auto;min-height:calc(100vh - 145px)}footer{padding:21px 42px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.eyebrow{color:var(--accent);font-size:10px;letter-spacing:2px;font-weight:600;margin-bottom:18px}.hero{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(230px,.75fr);gap:44px;padding:41px;background:linear-gradient(125deg,var(--surface) 55%,var(--surface2));border:1px solid var(--line);border-radius:26px;overflow:hidden}.hero h1 span{color:var(--accent)}.hero p{max-width:520px;margin-top:20px;font-size:14px;line-height:1.95}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}.button{border:1px solid var(--line);background:var(--surface2);color:var(--text);padding:10px 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;gap:9px;font-size:13px;line-height:1.6;min-height:42px}.button.primary{background:var(--accent);color:var(--accentText);border-color:var(--accent);font-weight:600}.button.subtle{background:transparent}.button.danger{color:var(--danger)}.button.small{font-size:12px;padding:6px 11px;min-height:32px}.hero-card{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:22px;align-self:center;box-shadow:var(--shadow);transform:rotate(2deg)}.hero-card-header{font-size:10px;color:var(--muted);display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:13px;margin-bottom:16px}.code-line{font:12px/2.1 var(--mono);color:var(--muted)}.code-line b{color:var(--accent);font-weight:400}.code-line .warm{color:var(--warm)}.hero-card .result{margin-top:18px;padding:11px;border-radius:8px;background:var(--surface);font-size:11px;color:var(--accent)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0 36px}.stat{border:1px solid var(--line);border-radius:14px;padding:17px 21px;background:var(--surface)}.stat strong{font-size:25px;font-weight:550;display:block;line-height:1.2;margin-bottom:6px}.stat span{font-size:11px;color:var(--muted)}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:14px;margin:29px 0 20px}.section-heading p{font-size:12px;margin-top:7px}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.course-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:23px;transition:transform .18s,border-color .18s}.course-card:hover{transform:translateY(-3px);border-color:var(--muted)}.card-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:25px}.module-number{font:11px var(--mono);color:var(--accent);border:1px solid var(--line);padding:5px 9px;border-radius:7px}.pill{font-size:10px;color:var(--muted);border:1px solid var(--line);padding:3px 8px;border-radius:20px}.course-card p{font-size:12px;margin:10px 0 20px;min-height:40px}.card-foot{padding-top:16px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted);font-size:11px}.callout{padding:17px 21px;border:1px solid var(--line);background:var(--surface2);border-radius:12px;color:var(--muted);font-size:12px;margin:20px 0;line-height:1.9}.callout strong{color:var(--text)}.callout.warning{border-left:3px solid var(--warm)}.callout.error{border-left:3px solid var(--danger);color:var(--danger)}.search{background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:11px 15px;width:min(330px,100%);color:var(--text)}.heading-row{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px}.page-title{font-size:34px}.muted{color:var(--muted)}.lead{max-width:800px;margin:13px 0 22px}.panel{border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:26px;margin:18px 0}.panel h3{margin-bottom:13px}.panel p+p{margin-top:12px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:21px}.two-col>.panel{margin:0}.actions{display:flex;gap:9px;flex-wrap:wrap;align-items:center}.workspace-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;position:sticky;top:0;background:var(--bg);padding:12px 0;z-index:3;border-bottom:1px solid var(--line);margin-bottom:19px;flex-wrap:wrap}.status{font-size:12px;color:var(--muted)}.status.ready{color:var(--accent)}.notebook-cell{margin:16px 0;border:1px solid var(--line);background:var(--surface);border-radius:13px;overflow:hidden}.cell-head{padding:9px 14px;background:var(--surface2);display:flex;justify-content:space-between;align-items:center;font:11px var(--mono);color:var(--muted)}.cell-code{width:100%;min-height:140px;resize:vertical;background:var(--surface);color:var(--text);border:0;outline:none;padding:18px 19px;font:13px/1.8 var(--mono);tab-size:4;white-space:pre;overflow:auto}.cell-markdown{padding:23px;white-space:pre-wrap;color:var(--muted);font-size:13px;line-height:1.95}.cell-output{padding:13px 19px;background:var(--bg);border-top:1px solid var(--line);white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.8 var(--mono);max-height:350px;overflow:auto}.cell-output.error{color:var(--danger)}.notes{width:100%;min-height:140px;padding:14px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);resize:vertical;font-size:13px}.cell-actions{display:flex;gap:6px}.field{display:flex;flex-direction:column;gap:7px;font-size:12px;color:var(--muted)}.field input,.field select{border:1px solid var(--line);background:var(--bg);color:var(--text);padding:9px 10px;border-radius:8px;min-width:0;width:100%}.fields{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin:22px 0}.chart{width:100%;height:280px;display:block;border:1px solid var(--line);border-radius:12px;background:var(--bg)}.chart-label{font-size:11px;color:var(--muted);margin-top:9px}.result-table{width:100%;border-collapse:collapse;font-size:12px}.result-table th,.result-table td{text-align:left;border-bottom:1px solid var(--line);padding:10px 8px}.result-table th{color:var(--muted);font-weight:400}.file-list{margin:15px 0;display:flex;flex-direction:column;gap:8px}.file-row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:9px 0;font-size:12px;gap:15px}.file-row span{overflow-wrap:anywhere}.empty{padding:35px;border:1px dashed var(--line);border-radius:13px;text-align:center;color:var(--muted);font-size:13px}.step-list{counter-reset:steps;display:grid;gap:13px}.step{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line)}.step::before{counter-increment:steps;content:counter(steps,decimal-leading-zero);font:12px var(--mono);color:var(--accent);padding-top:3px}.step p{font-size:12px;margin-top:4px}.capability{display:grid;grid-template-columns:190px 1fr;border-bottom:1px solid var(--line);padding:12px 0;gap:15px;font-size:13px}.capability span{color:var(--muted)}#notice{margin:18px 42px 0;padding:14px 18px;border:1px solid var(--warm);border-radius:10px;font-size:12px;color:var(--warm)}#toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--text);color:var(--bg);max-width:90vw;padding:12px 22px;border-radius:11px;z-index:30;font-size:13px;box-shadow:var(--shadow);overflow-wrap:anywhere}.boot{padding:45px 0}.hidden{display:none!important}.nowrap{white-space:nowrap}.scroll-table{overflow:auto}.file-button{cursor:pointer}.mono{font-family:var(--mono)}.runtime-warning{font-size:12px;line-height:1.9}
@media(min-width:1500px){.hero{padding:50px}.hero-card{padding:29px}.grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:1180px){.sidebar{width:210px;padding-left:16px;padding-right:16px}.page{margin-left:210px;width:calc(100% - 210px)}#app{padding:28px 27px 50px}.topbar{padding:0 27px}.hero{padding:29px;gap:24px}.hero-card{padding:17px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stats{gap:10px}.stat{padding:16px}.code-line{font-size:10px}}
@media(max-width:850px){.sidebar{position:static;width:100%;padding:15px 20px;border-right:0;border-bottom:1px solid var(--line)}.shell{display:block}.brand{font-size:16px}.brand-mark{width:34px;height:36px;line-height:36px;font-size:24px}.sidebar-label,.sidebar-bottom{display:none}.sidebar nav{flex-direction:row;margin-top:14px;overflow:auto;gap:5px}.sidebar nav a{white-space:nowrap;font-size:11px;padding:9px 10px}.sidebar nav a span{display:none}.sidebar nav a.active{box-shadow:inset 0 -2px var(--accent)}.page{margin-left:0;width:100%}.topbar{height:56px;padding:0 20px}.breadcrumb{font-size:8px}.storage-pill{font-size:10px}.top-actions{gap:13px}.text-link{display:none}#app{padding:24px 20px 40px}.hero{grid-template-columns:1fr;padding:28px;gap:27px}.hero-card{max-width:400px;width:100%;transform:rotate(0deg)}.code-line{font-size:12px}.hero h1{font-size:38px}.stats{grid-template-columns:repeat(2,1fr);margin-bottom:28px}.two-col{grid-template-columns:1fr}.fields{grid-template-columns:repeat(2,minmax(0,1fr))}.heading-row{align-items:start;flex-direction:column}.search{width:100%}.capability{grid-template-columns:1fr;gap:4px}footer{padding:20px;font-size:10px}#notice{margin:12px 20px 0}.page-title{font-size:29px}}
@media(max-width:480px){.grid{grid-template-columns:1fr}.hero h1{font-size:33px}.hero{padding:24px}.hero-card{display:none}.hero p{font-size:13px}.section-heading h2{font-size:23px}.course-card{padding:20px}.card-top{margin-bottom:17px}.panel{padding:19px}.cell-code{font-size:12px}.workspace-toolbar .actions{gap:7px}.button{padding:9px 13px}.button.small{padding:6px 9px}.stat strong{font-size:23px}.topbar .breadcrumb{letter-spacing:1px}.top-actions{gap:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}