:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#26332e;background:#f5f7f8;font-size:16px;--accent:#176b59;--line:#e2e8e5;--muted:#6b7771}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer;border:1px solid var(--line);border-radius:7px;background:#fff;color:inherit;padding:8px 12px;font-size:.875rem;white-space:nowrap}button:hover{background:#f0f5f2}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #79b7a6;outline-offset:3px}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover{background:#115744}a{color:var(--muted);text-decoration:none}a:hover{text-decoration:underline}[hidden]{display:none!important}
#workspace{display:flex;height:100dvh;overflow:hidden}#sidebar{width:240px;flex:none;display:flex;flex-direction:column;background:#fafcfb;border-right:1px solid var(--line);padding:26px 16px 18px;z-index:5}.brand{display:flex;align-items:center;gap:10px;margin:0 5px 28px}.brand strong{font-size:1.125rem;letter-spacing:.04em}.new-button{width:100%;height:43px;text-align:left}.new-button span{font-size:1.25rem;margin-right:8px}.list-heading{display:flex;align-items:center;color:var(--muted);gap:8px;margin:28px 4px 12px;font-size:.8125rem}.list-heading #count{font-size:.75rem;background:#e9efeb;border-radius:4px;padding:2px 6px}.list-heading button{margin-left:auto}.icon-button{background:transparent;border:0;padding:5px 8px;font-size:1.125rem}.sidebar-footer{padding:18px 4px 0;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 12px;font-size:.75rem}.subtle{background:transparent;border:0;padding:4px 0;text-align:left;font-size:.875rem;flex-basis:100%}.sidebar-footer a{font-size:.75rem}
#files{overflow:auto;flex:1;padding:0 0 16px}.file{width:100%;display:block;text-align:left;border:1px solid transparent;background:transparent;padding:12px;margin-bottom:5px}.file.active{background:#e7f2ec;border-color:#d3e5da;color:#154f41}.file strong{font-size:.875rem;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:550}.file small{display:block;margin-top:6px;color:var(--muted);font-size:.75rem}.list-empty{font-size:.875rem;color:var(--muted);padding:18px 8px}
main{flex:1;min-width:0;display:flex;flex-direction:column}.topbar{min-height:76px;display:flex;align-items:center;gap:12px;padding:12px 22px;background:#fff;border-bottom:1px solid var(--line)}.document-heading{min-width:0;flex:1;display:flex;flex-direction:column;gap:5px}#rename{font-size:1rem;overflow:hidden;text-overflow:ellipsis;border:0;text-align:left;font-weight:600;padding:0;background:none;max-width:100%;width:fit-content}#status{font-size:.75rem;color:var(--muted)}#status[data-state="saved"]{color:var(--accent)}#status[data-state="error"]{color:#ac3933}.actions{display:flex;gap:8px;align-items:center}.danger-text{color:#a43f37}#canvas{flex:1;min-height:0;position:relative}#editor-host,#editor-host iframe{width:100%;height:100%;border:0;display:block}#editor-host:empty{display:none}.empty{height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:30px}.empty img{margin-bottom:18px}.empty h1{font-size:1.5rem;font-weight:600;margin:0 0 12px}.empty p{font-size:.9375rem;color:var(--muted);margin:0 0 24px}#busy{position:absolute;inset:0;background:#f8fafae8;display:flex;align-items:center;justify-content:center;z-index:20;color:var(--muted);font-size:.9375rem}#error-bar{padding:12px 20px;background:#fff3df;border-bottom:1px solid #edd8b3;color:#6e4618;font-size:.875rem}#error-bar>div{margin-top:8px;display:flex;flex-wrap:wrap;gap:8px}#error-bar button{background:#fffaf0}
dialog{border:1px solid var(--line);border-radius:14px;padding:28px;width:min(460px,calc(100vw - 32px));max-height:85dvh;box-shadow:0 24px 100px #1d37232e;color:inherit}dialog::backdrop{background:#142d2452;backdrop-filter:blur(3px)}dialog h2{margin:0 0 22px;font-size:1.25rem}dialog p{font-size:.9375rem;line-height:1.7;color:var(--muted);overflow-wrap:anywhere}label{display:block;font-size:.875rem;margin:12px 0 9px}input{width:100%;padding:12px;border:1px solid #cdd8d1;border-radius:7px;min-width:0}.dialog-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:26px}.dialog-title{display:flex;align-items:flex-start;justify-content:space-between}.version{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding:14px 0;gap:16px}.version span{display:block;font-size:.875rem}.version small{display:block;color:var(--muted);margin-top:5px;font-size:.75rem}.version button{flex:none}#history-dialog{width:min(560px,calc(100vw - 32px))}
#gate{position:fixed;inset:0;background:#f1f5f3;display:grid;place-items:center;padding:20px;z-index:100}.unlock-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:38px;width:min(400px,100%);box-shadow:0 16px 60px #163c2110}.unlock-card h1{font-size:1.4rem;margin:22px 0 8px}.unlock-card p{font-size:.875rem;color:var(--muted);line-height:1.6}.unlock-card button{width:100%;padding:12px}.unlock-card #unlock-error{color:#ae3933;min-height:1.5em}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);max-width:calc(100vw - 32px);padding:12px 18px;border-radius:8px;background:#203b30;color:#fff;box-shadow:0 4px 24px #0002;font-size:.875rem;z-index:200}.mobile{display:none}body.sidebar-hidden #sidebar{display:none}
@media(max-width:1100px){#sidebar{width:210px}.topbar{padding:12px}.actions{gap:5px}.actions button{padding:7px 9px}.topbar{flex-wrap:wrap}.document-heading{min-width:150px}}
@media(max-width:760px){#sidebar{position:fixed;inset:0 auto 0 0;width:260px;box-shadow:12px 0 40px #1233;display:none}body.sidebar-open #sidebar{display:flex}.mobile{display:block;margin-left:auto}.topbar{gap:8px;min-height:108px}.actions{width:100%;overflow:auto;padding:2px 0}.actions button{flex:1;padding:8px 10px}#canvas .empty h1{font-size:1.25rem}.document-heading{width:calc(100% - 50px)}#error-bar{padding:10px 12px}}