:root{--bg: #F7F8FA;--panel: #FFFFFF;--ink: #1C2433;--ink-2: #4B5568;--muted: #8A94A6;--line: #E4E8EF;--accent: #2F6BFF;--accent-soft: #EAF0FF;--danger: #E5484D;--shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 6px 20px rgba(16, 24, 40, .1);--radius: 12px;font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif;color:var(--ink);-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{background:var(--bg);overflow:hidden}button{font:inherit;color:inherit;cursor:pointer}input,select{font:inherit;color:inherit}kbd{font:600 11px ui-monospace,SFMono-Regular,Menlo,monospace;background:#f1f4f9;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:1px 6px;white-space:nowrap}.btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border-radius:10px;border:1px solid var(--line);background:var(--panel);font-weight:600;font-size:14px;text-decoration:none;color:var(--ink);white-space:nowrap}.btn:hover{background:#f4f6fa}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:#255ce6}.btn.lg{height:46px;padding:0 22px;font-size:15px;border-radius:12px}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:0;border-radius:9px;background:transparent;color:var(--ink-2)}.icon-btn:hover{background:#f1f4f9;color:var(--ink)}.icon-btn.on{background:var(--accent-soft);color:var(--accent)}.icon-btn:disabled{opacity:.4;cursor:default}.muted{color:var(--muted)}.alert{background:#fff1f1;color:#b42318;border:1px solid #FBD5D5;padding:10px 14px;border-radius:10px;margin:0 0 14px;font-size:14px;cursor:pointer}.hint{color:var(--muted);font-size:12.5px;margin:6px 0 0;line-height:1.4}.splash{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--ink-2);font-size:15px;background:var(--bg)}.splash.inline{position:static;padding:60px 0;background:none}.splash.overlay{background:#f7f8fab3;z-index:5}.spin{width:28px;height:28px;border-radius:50%;border:3px solid #DCE3EF;border-top-color:var(--accent);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.logo-mark{width:52px;height:52px;object-fit:contain;flex:none;display:block}.logo-mark.sm{width:30px;height:30px}.login{height:100%;display:flex;align-items:center;justify-content:center;padding:16px;background:radial-gradient(1200px 600px at 20% 10%,#EAF0FF 0,transparent 60%),radial-gradient(900px 500px at 90% 90%,#FFF6D6 0,transparent 60%),var(--bg)}.login-card{width:min(440px,100%);background:var(--panel);border-radius:20px;box-shadow:var(--shadow);padding:36px 32px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}.login-card h1{margin:10px 0 0;font-size:26px;letter-spacing:-.02em}.login-card p{margin:0 0 14px;color:var(--ink-2);line-height:1.5}.list-page{height:100%;overflow:auto}.list-top{position:sticky;top:0;z-index:2;display:flex;align-items:center;gap:16px;padding:12px 24px;background:#ffffffeb;backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:17px}.search{display:flex;align-items:center;gap:8px;flex:1;max-width:460px;height:38px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:#f7f8fa;color:var(--muted)}.search input{border:0;outline:0;background:transparent;flex:1;min-width:0;color:var(--ink);font-size:14px}.search:focus-within{border-color:var(--accent);background:#fff}.search.small{height:34px;max-width:none}.me{margin-left:auto;display:flex;align-items:center;gap:10px}.me-name{font-weight:600;font-size:14px}.list-main{max-width:1160px;margin:0 auto;padding:28px 24px 60px}.list-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;gap:12px}.list-head h1{margin:0;font-size:24px;letter-spacing:-.02em}.board-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}.board-card{position:relative;text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:visible;cursor:pointer;padding:0;transition:box-shadow .15s,transform .15s}.board-card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.board-card .thumb{position:relative;height:128px;border-radius:13px 13px 0 0;overflow:hidden}.thumb .mini{position:absolute;border-radius:4px;box-shadow:0 2px 4px #00000014}.thumb .s1{left:18%;top:22%;width:22%;height:34%;background:#ffe066;transform:rotate(-4deg)}.thumb .s2{left:46%;top:30%;width:26%;height:22%;background:#fff;border:1.5px solid #334155;border-radius:6px}.thumb .s3{left:30%;top:62%;width:40%;height:4px;background:#334155;box-shadow:none;border-radius:2px}.new-thumb{display:flex;align-items:center;justify-content:center;background:var(--accent-soft);color:var(--accent)}.board-card.new{border-style:dashed;display:flex;flex-direction:column;justify-content:flex-start;align-items:stretch}.board-card.new .thumb{margin:-1px -1px 0}.board-card .meta{padding:12px 14px 14px;display:flex;flex-direction:column;gap:3px;min-width:0}.board-card .meta b{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:26px}.board-card .meta small{font-size:12.5px;color:var(--muted)}.board-card .rename{font-weight:600;border:1.5px solid var(--accent);border-radius:6px;padding:2px 6px;outline:0}.card-more{position:absolute;right:6px;bottom:26px;width:30px;height:30px}.menu{position:absolute;z-index:30;min-width:180px;background:var(--panel);border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--line);padding:6px;display:flex;flex-direction:column}.board-card .menu{right:6px;bottom:58px}.menu button{display:flex;align-items:center;gap:9px;border:0;background:transparent;text-align:left;padding:8px 10px;border-radius:8px;font-size:14px}.menu button:hover:not(:disabled){background:#f1f4f9}.menu button:disabled{opacity:.45;cursor:default}.menu button.danger{color:var(--danger)}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;color:#fff;font-weight:700;flex:none;letter-spacing:.02em;user-select:none}.avatar.click{cursor:pointer}.avatar.more{width:30px;height:30px;background:#e6eaf1;color:var(--ink-2);font-size:12px}.board-page{position:fixed;inset:0;overflow:hidden}.canvas-host{position:absolute;inset:0}.qe-root{background:var(--bg)}.topbar{position:absolute;top:12px;z-index:10;display:flex;align-items:center;gap:8px;background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);padding:6px 8px;max-width:calc(100vw - 24px)}.topbar.left{left:12px}.topbar.right{right:12px;padding:6px 6px 6px 10px}.title{border:0;background:transparent;font-weight:650;font-size:15px;padding:6px 8px;border-radius:8px;max-width:32vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.title:hover{background:#f1f4f9}.title-input{font-weight:650;font-size:15px;padding:5px 8px;border:1.5px solid var(--accent);border-radius:8px;outline:0;width:260px;max-width:40vw}.status{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);padding:0 6px;white-space:nowrap}.status i{width:8px;height:8px;border-radius:50%;background:#30a46c}.status.connecting i{background:#ffb224;animation:pulse 1s infinite}.status.disconnected i{background:var(--danger)}.status.disconnected{color:var(--danger)}@keyframes pulse{50%{opacity:.35}}.badge{font-size:12px;font-weight:600;background:#f1f4f9;color:var(--ink-2);padding:4px 9px;border-radius:999px;white-space:nowrap}.avatars{display:flex;align-items:center;gap:4px;padding-right:4px}.menu-wrap{position:relative}.topbar .menu{right:0;top:44px}.zoombar .menu.up{right:0;bottom:46px}.menu.help{width:380px;max-height:70vh;overflow:auto;padding:12px}.menu.help table{border-collapse:collapse;font-size:13px;width:100%}.menu.help td{padding:5px 4px;vertical-align:top}.menu.help td:first-child{width:42%}.toolbar{position:absolute;left:12px;top:50%;transform:translateY(-50%);z-index:10;display:flex;flex-direction:column;gap:2px;background:var(--panel);border-radius:14px;box-shadow:var(--shadow);padding:6px}.tool{position:relative;width:42px;height:42px;display:flex;align-items:center;justify-content:center;border:0;background:transparent;border-radius:10px;color:var(--ink-2)}.tool:hover:not(:disabled){background:#f1f4f9;color:var(--ink)}.tool.on{background:var(--accent-soft);color:var(--accent)}.tool:disabled{opacity:.35;cursor:default}.tool-dot{position:absolute;right:7px;bottom:7px;width:8px;height:8px;border-radius:2px;box-shadow:0 0 0 1px #00000026}.toolbar .sep,.zoombar .sep{width:24px;height:1px;background:var(--line);margin:4px auto}.zoombar .sep{width:1px;height:22px;margin:0 4px}.pop{position:absolute;z-index:20;background:var(--panel);border-radius:14px;box-shadow:var(--shadow);border:1px solid var(--line);padding:12px}.tool-pop{left:68px;top:50%;transform:translateY(-50%)}.shape-pop{width:380px}.pop-title{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:8px;display:flex;align-items:center;gap:6px}.shape-lib{display:flex;flex-direction:column;gap:8px}.tabs{display:flex;gap:4px;flex-wrap:wrap}.tabs button{border:0;background:#f1f4f9;border-radius:999px;padding:5px 11px;font-size:12.5px;font-weight:600;color:var(--ink-2)}.tabs button.on{background:var(--ink);color:#fff}.shape-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;max-height:340px;overflow:auto;padding-right:2px}.shape-cell{display:flex;flex-direction:column;align-items:center;gap:4px;border:1px solid transparent;background:transparent;border-radius:10px;padding:8px 4px 6px;font-size:11px;color:var(--ink-2);text-align:center;line-height:1.2}.shape-cell:hover{background:#f4f6fa}.shape-cell.on{border-color:var(--accent);background:var(--accent-soft)}.swatches{display:grid;grid-template-columns:repeat(7,26px);gap:6px}.sw{width:26px;height:26px;border-radius:50%;border:1px solid rgba(15,23,42,.14);padding:0}.sw.on{box-shadow:0 0 0 2px #fff,0 0 0 4px var(--accent)}.sw.none,.chip.none{background:linear-gradient(135deg,#fff 45%,var(--danger) 45%,var(--danger) 55%,#fff 55%)!important}.widths{display:flex;gap:6px;margin-top:10px}.widths button{flex:1;height:30px;border:1px solid var(--line);border-radius:8px;background:#fff;display:flex;align-items:center;padding:0 8px}.widths button.on{border-color:var(--accent);background:var(--accent-soft)}.widths span{display:block;width:100%;border-radius:6px}.ctxbar{position:absolute;z-index:12;transform:translate(-50%);display:flex;align-items:center;gap:2px;background:var(--panel);border-radius:12px;box-shadow:var(--shadow);padding:4px}.cb{min-width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:0;background:transparent;border-radius:8px;color:var(--ink-2);padding:0 6px}.cb:hover{background:#f1f4f9;color:var(--ink)}.cb.on{background:var(--accent-soft);color:var(--accent)}.cb.danger:hover{color:var(--danger);background:#fff1f1}.cb.txt{font-size:13px;font-weight:600;min-width:42px}.cb-sep{width:1px;height:22px;background:var(--line);margin:0 3px}.chip{width:20px;height:20px;border-radius:50%;border:1px solid rgba(15,23,42,.18);display:block}.ring{width:20px;height:20px;border-radius:50%;border:3px solid;display:block}.ctx-pop{top:46px;left:50%;transform:translate(-50%);min-width:260px}.ctx-pop .shape-lib{width:360px}.row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;font-size:13px;color:var(--ink-2)}.seg{display:inline-flex;gap:4px}.seg.wrap{flex-wrap:wrap;max-width:300px}.seg button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:5px 9px;font-size:12.5px;font-weight:600}.seg button.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.zoombar{position:absolute;right:12px;bottom:12px;z-index:10;display:flex;align-items:center;gap:2px;background:var(--panel);border-radius:12px;box-shadow:var(--shadow);padding:4px}.zoom-pct{border:0;background:transparent;font-size:13px;font-weight:600;min-width:52px;height:34px;border-radius:8px}.zoom-pct:hover{background:#f1f4f9}.toast{position:absolute;left:50%;bottom:24px;transform:translate(-50%);z-index:40;background:#1c2433;color:#fff;padding:10px 16px;border-radius:10px;font-size:14px;box-shadow:var(--shadow);max-width:calc(100vw - 32px)}.modal-back{position:fixed;inset:0;z-index:50;background:#0f172a52;display:flex;align-items:flex-start;justify-content:center;padding:10vh 16px 16px}.modal{width:min(560px,100%);max-height:80vh;overflow:auto;background:var(--panel);border-radius:16px;box-shadow:0 20px 60px #0f172a40;padding:18px 20px 20px}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.modal-head h2{margin:0;font-size:18px}.invite{display:flex;gap:8px;align-items:center}.invite .search{max-width:none}.invite input[readonly]{flex:1;min-width:0;height:36px;border:1px solid var(--line);border-radius:10px;padding:0 10px;font-size:13px;background:#f7f8fa}select{height:36px;border:1px solid var(--line);border-radius:10px;padding:0 8px;background:#fff;font-size:14px}.found{border:1px solid var(--line);border-radius:12px;margin-top:8px;padding:4px}.members{margin-top:14px;display:flex;flex-direction:column;gap:2px}.person{display:flex;align-items:center;gap:10px;padding:7px 6px;border-radius:10px;border:0;background:transparent;width:100%;text-align:left}button.person:hover{background:#f4f6fa}.person span{flex:1;min-width:0;display:flex;flex-direction:column}.person b{font-size:14px;font-weight:600}.person small{font-size:12.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.person em{font-style:normal;font-size:13px;color:var(--accent);font-weight:600}.person em.role{color:var(--ink-2);font-weight:500}.linkbox{margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}.linkbox .hint{margin:0 0 10px}@media (max-width: 720px){.title{max-width:30vw}.status,.topbar.right .btn span,.me-name{display:none}.topbar.right .btn{padding:0 10px}.list-top{padding:10px 16px;gap:10px}.list-main{padding:20px 16px 40px}.board-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.toolbar{top:auto;bottom:64px;transform:none}.tool{width:38px;height:38px}.shape-pop{width:calc(100vw - 92px)}.avatars .avatar:not(:last-child){display:none}}.or{display:flex;align-items:center;gap:10px;width:100%;color:var(--muted);font-size:13px;margin:4px 0}.or:before,.or:after{content:"";flex:1;height:1px;background:var(--line)}.login-card .btn.lg{width:100%;justify-content:center}.badge.guest{background:#fff4d6;color:#8a5a00}.btn.sm{height:30px;padding:0 10px;font-size:13px}.demo-note{margin:-6px 0 16px}.demo-note a{color:var(--accent);font-weight:600}