:root {
  color-scheme: dark;
  --bg: #080c16;
  --bg-soft: #0e1423;
  --panel: rgba(18, 25, 42, .86);
  --panel-solid: #11192a;
  --panel-raised: #18233a;
  --text: #f5f7fb;
  --text-soft: #c3ccdd;
  --muted: #8490a7;
  --muted-2: #5f6d87;
  --line: rgba(197, 211, 239, .12);
  --line-strong: rgba(197, 211, 239, .22);
  --blue: #7c9cff;
  --blue-strong: #5d7cff;
  --violet: #ad8bff;
  --cyan: #67e8f9;
  --green: #68e0a1;
  --red: #fb7185;
  --shadow: 0 24px 80px rgba(0,0,0,.34);
  --radius: 18px;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f7fb; --bg-soft: #edf1f8; --panel: rgba(255,255,255,.9); --panel-solid:#fff; --panel-raised:#f7f9fd;
  --text:#192235; --text-soft:#43506a; --muted:#71809c; --muted-2:#9aa6bb; --line:rgba(31,48,84,.12); --line-strong:rgba(31,48,84,.22);
  --shadow:0 24px 70px rgba(47,67,105,.14);
}
* { box-sizing: border-box; }
html, body { margin:0; min-height:100%; background:var(--bg); color:var(--text); font-family:var(--sans); }
html { scroll-behavior:smooth; }
body { overflow-x:hidden; line-height:1.6; }
button, input, textarea { font:inherit; }
button, a { -webkit-tap-highlight-color:transparent; }
button { cursor:pointer; }
a { color:var(--blue); }
.app-page { background: radial-gradient(circle at 10% -10%, rgba(93,124,255,.16), transparent 36rem), radial-gradient(circle at 100% 0, rgba(173,139,255,.13), transparent 38rem), var(--bg); }
.app-shell { min-height:100vh; }
.topbar { min-height:68px; padding:0 28px; display:flex; align-items:center; justify-content:space-between; gap:20px; border-bottom:1px solid var(--line); background:rgba(8,12,22,.58); backdrop-filter:blur(20px); position:sticky; top:0; z-index:20; }
:root[data-theme="light"] .topbar { background:rgba(255,255,255,.72); }
.brand { display:inline-flex; align-items:center; gap:10px; color:var(--text); font-weight:750; text-decoration:none; letter-spacing:-.02em; white-space:nowrap; }
.brand-mark { display:grid; place-items:center; width:30px; height:30px; border-radius:10px; color:#fff; font-weight:800; background:linear-gradient(135deg,var(--blue-strong),var(--violet)); box-shadow:0 6px 18px rgba(93,124,255,.35); }
.topbar-center { display:flex; align-items:center; gap:9px; color:var(--muted); font-size:13px; }
.status-dot { width:7px; height:7px; border-radius:99px; background:var(--green); box-shadow:0 0 0 4px rgba(104,224,161,.12); }
.status-dot[data-state="editing"] { background:var(--blue); box-shadow:0 0 0 4px rgba(124,156,255,.12); }
.status-dot[data-state="saving"] { background:#f6c86e; box-shadow:0 0 0 4px rgba(246,200,110,.12); }
.status-dot[data-state="error"] { background:var(--red); box-shadow:0 0 0 4px rgba(251,113,133,.12); }
.muted-separator { color:var(--muted-2); }
.topbar-actions, .meta-actions { display:flex; align-items:center; gap:8px; }
.icon-btn, .tool-btn, .formatbar button { border:0; background:transparent; color:var(--muted); border-radius:10px; transition:.2s ease; }
.icon-btn { width:36px; height:36px; display:grid; place-items:center; font-size:18px; text-decoration:none; }
.icon-btn:hover, .tool-btn:hover, .formatbar button:hover { color:var(--text); background:var(--line); }
.button { border:1px solid transparent; border-radius:11px; min-height:42px; padding:0 17px; display:inline-flex; align-items:center; justify-content:center; gap:9px; color:var(--text); text-decoration:none; font-weight:650; transition:.2s ease; }
.button:hover { transform:translateY(-1px); }
.button-primary { background:linear-gradient(135deg,var(--blue-strong),#8c75ff); box-shadow:0 10px 24px rgba(93,124,255,.24); }
.button-primary:hover { box-shadow:0 13px 30px rgba(93,124,255,.34); }
.button-ghost { border-color:var(--line-strong); color:var(--text-soft); background:rgba(255,255,255,.03); }
.button-ghost:hover { background:var(--line); }
.button-danger { border-color:rgba(251,113,133,.25); color:#ff9aab; background:rgba(251,113,133,.08); }
.button-small { min-height:34px; padding:0 12px; border-radius:9px; font-size:13px; }
.auth-layout { width:min(1080px,calc(100% - 40px)); margin:clamp(40px,9vh,110px) auto; display:grid; grid-template-columns:minmax(0, 1.08fr) minmax(280px,.92fr); gap:24px; align-items:stretch; }
.auth-card, .auth-aside { border:1px solid var(--line); background:var(--panel); border-radius:26px; box-shadow:var(--shadow); }
.auth-card { padding:clamp(28px,5vw,58px); position:relative; overflow:hidden; }
.auth-card:after { content:""; position:absolute; inset:auto -15% -60% 30%; height:320px; background:radial-gradient(circle,rgba(124,156,255,.18),transparent 65%); pointer-events:none; }
.eyebrow { display:block; color:var(--blue); font-size:11px; letter-spacing:.16em; font-weight:750; margin-bottom:12px; }
.auth-card h1 { margin:0 0 13px; font-size:clamp(28px,4vw,44px); letter-spacing:-.045em; line-height:1.1; }
.lede { color:var(--text-soft); margin:0 0 30px; max-width:52ch; }
.muted { color:var(--muted); font-size:13px; }
.stack-form { display:grid; gap:17px; position:relative; z-index:1; }
.stack-form label, .settings-form label { display:grid; gap:8px; color:var(--text-soft); font-size:13px; font-weight:600; }
.stack-form input, .settings-form input { width:100%; height:46px; border:1px solid var(--line-strong); border-radius:11px; color:var(--text); background:rgba(2,8,20,.32); padding:0 14px; outline:none; transition:.2s; }
:root[data-theme="light"] .stack-form input, :root[data-theme="light"] .settings-form input { background:#fff; }
.stack-form input:focus, .settings-form input:focus, .note-title:focus { border-color:var(--blue); box-shadow:0 0 0 4px rgba(124,156,255,.13); }
.form-message { min-height:20px; margin:0; color:var(--muted); font-size:13px; }
.form-message.is-error { color:#ff9aab; }.form-message.is-success { color:var(--green); }
.subtle-link { display:inline-block; margin-top:25px; color:var(--muted); text-decoration:none; font-size:13px; }.subtle-link:hover{color:var(--blue);}
.auth-aside { padding:38px; position:relative; overflow:hidden; background:linear-gradient(150deg,rgba(45,58,104,.86),rgba(18,25,42,.75)); }
.auth-aside .orb { position:absolute; border-radius:50%; filter:blur(2px); opacity:.7; pointer-events:none; }
.orb-blue { width:290px; height:290px; top:-120px; right:-100px; background:radial-gradient(circle at 30% 30%,rgba(113,161,255,.65),transparent 67%); }
.orb-violet { width:250px; height:250px; bottom:-120px; left:-90px; background:radial-gradient(circle,rgba(176,130,255,.48),transparent 67%); }
.quote { position:relative; margin:0 0 65px; max-width:18ch; font-size:clamp(24px,3vw,34px); font-weight:700; letter-spacing:-.04em; line-height:1.22; }
.mini-feature { position:relative; display:flex; gap:15px; align-items:flex-start; padding:17px 0; border-top:1px solid rgba(255,255,255,.14); }.mini-feature span{color:var(--cyan);font:700 12px var(--mono);padding-top:4px}.mini-feature strong{display:block;font-size:14px}.mini-feature small{display:block;color:rgba(238,243,255,.62);font-size:12px;margin-top:3px}.locked-aside{display:flex;flex-direction:column;justify-content:center}.locked-aside small{position:relative;color:rgba(238,243,255,.62);max-width:28ch}.lock-shape{position:relative;width:78px;height:78px;border-radius:25px;display:grid;place-items:center;font-size:40px;color:var(--cyan);background:rgba(103,232,249,.1);border:1px solid rgba(103,232,249,.25);margin-bottom:30px}
.editor-shell { width:min(1440px,calc(100% - 40px)); margin:0 auto; padding:22px 0 28px; }
.note-meta { display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:14px; }
.title-wrap { min-width:0; display:flex; align-items:baseline; gap:12px; }.note-title{min-width:0;width:min(620px,70vw);border:1px solid transparent;background:transparent;color:var(--text);font-size:clamp(20px,3vw,30px);font-weight:750;letter-spacing:-.04em;padding:5px 8px;border-radius:9px;outline:none}.note-id{color:var(--muted-2);font:12px var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tool-btn{height:35px;padding:0 11px;display:inline-flex;align-items:center;gap:7px;font-size:13px}.tool-label{display:inline}.formatbar { height:48px; display:flex; align-items:center; gap:3px; padding:0 8px; border:1px solid var(--line); border-bottom:0; border-radius:14px 14px 0 0; background:var(--panel-solid); }.formatbar button{height:32px;min-width:32px;padding:0 8px;display:grid;place-items:center}.formatbar span{width:1px;height:19px;background:var(--line);margin:0 5px}.format-spacer{flex:1!important;background:transparent!important}.formatbar kbd{font:11px var(--mono);color:var(--muted-2);margin-left:4px}
.editor-grid { display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1fr); height:calc(100vh - 170px); min-height:510px; border:1px solid var(--line); border-radius:0 0 15px 15px; overflow:hidden; box-shadow:var(--shadow); background:var(--panel-solid); }.editor-pane,.preview-pane{min-width:0;min-height:0;display:flex;flex-direction:column}.editor-pane{border-right:1px solid var(--line)}.editor-pane textarea{min-width:0;min-height:0;flex:1;width:100%;resize:none;border:0;outline:0;background:transparent;color:var(--text-soft);padding:28px 30px;font:15px/1.85 var(--mono);overflow:auto;tab-size:2}.preview-pane{background:var(--panel)}.preview-scroll{min-width:0;flex:1;overflow:auto;padding:30px 36px}.pane-footer{height:34px;flex:0 0 34px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;color:var(--muted-2);font:11px var(--mono);border-top:1px solid var(--line)}
.markdown-content { min-width:0; max-width:860px; margin:0 auto; color:var(--text-soft); font-size:16px; line-height:1.85; overflow-wrap:anywhere; word-break:break-word; }.markdown-content>*:first-child{margin-top:0}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4{color:var(--text);letter-spacing:-.035em;line-height:1.25}.markdown-content h1{font-size:32px;margin:0 0 26px;padding-bottom:18px;border-bottom:1px solid var(--line)}.markdown-content h2{font-size:24px;margin:40px 0 14px}.markdown-content h3{font-size:19px;margin:30px 0 10px}.markdown-content h4{font-size:16px;margin:24px 0 8px}.markdown-content p{margin:0 0 18px}.markdown-content a{color:var(--blue);text-decoration:underline;text-decoration-color:rgba(124,156,255,.35);text-underline-offset:3px}.markdown-content blockquote{margin:22px 0;padding:14px 18px;border-left:3px solid var(--blue);background:rgba(124,156,255,.08);color:var(--text-soft);border-radius:0 10px 10px 0}.markdown-content ul,.markdown-content ol{padding-left:25px;margin:0 0 19px}.markdown-content li{margin:6px 0}.markdown-content li::marker{color:var(--blue)}.markdown-content hr{border:0;border-top:1px solid var(--line);margin:33px 0}.markdown-content img{display:block;max-width:100%;height:auto;border-radius:13px;margin:24px auto;cursor:zoom-in;box-shadow:0 12px 35px rgba(0,0,0,.15)}.table-wrap{width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--line);border-radius:11px}.markdown-content table{width:100%;min-width:520px;border-collapse:collapse;margin:0}.markdown-content th,.markdown-content td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left}.markdown-content th{color:var(--text);background:rgba(124,156,255,.07);font-weight:700}.markdown-content tr:last-child td{border-bottom:0}.markdown-content code{font:0.88em var(--mono);padding:2px 6px;border:1px solid var(--line);border-radius:6px;color:#ffc77d;background:rgba(255,199,125,.07);overflow-wrap:anywhere}.markdown-content pre{position:relative;max-width:100%;overflow:auto;margin:22px 0;padding:20px 18px;border:1px solid var(--line);border-radius:13px;background:#0a0f1c;white-space:pre;word-break:normal}.markdown-content pre code{display:block;min-width:max-content;padding:0;border:0;background:transparent;color:#d6deee;line-height:1.7;white-space:pre}.copy-code{position:absolute;top:8px;right:8px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.07);color:#aab7ce;border-radius:7px;padding:3px 8px;font-size:11px}.markdown-content input[type=checkbox]{accent-color:var(--blue);margin-right:8px}.empty-preview,.empty-state{display:grid;place-items:center;min-height:160px;color:var(--muted);font-size:13px;text-align:center;padding:25px}
.modal{border:0;padding:0;background:transparent;color:var(--text);width:min(560px,calc(100% - 30px));max-height:calc(100vh - 30px)}.modal::backdrop{background:rgba(2,5,12,.72);backdrop-filter:blur(6px)}.modal-card{max-height:calc(100vh - 30px);overflow:auto;padding:28px;border:1px solid var(--line-strong);border-radius:20px;background:var(--panel-solid);box-shadow:var(--shadow)}.modal-wide{width:min(700px,100%)}.modal-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:24px}.modal-head h2{margin:0;font-size:25px;letter-spacing:-.03em}.close-btn{border:0;background:transparent;color:var(--muted);font-size:27px;line-height:1}.settings-form{display:grid;gap:17px}.settings-form small{font-weight:400;color:var(--muted)}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:15px 0;border-top:1px solid var(--line)}.setting-row strong,.setting-row small{display:block}.setting-row small{font-size:12px;margin-top:3px}.switch{display:block!important;width:44px;height:26px;position:relative}.switch input{position:absolute;opacity:0}.switch span{display:block;width:44px;height:26px;border-radius:99px;background:var(--line-strong);transition:.2s}.switch span:after{content:"";position:absolute;top:4px;left:4px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.2s}.switch input:checked+span{background:var(--blue-strong)}.switch input:checked+span:after{transform:translateX(18px)}.share-box{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid var(--line);border-radius:11px;color:var(--muted);font-size:12px}.share-box code{min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-soft);font-family:var(--mono)}.modal-actions{display:flex;justify-content:space-between;gap:12px;margin-top:4px}.revision-list{display:grid;gap:9px}.revision-item{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:14px;border:1px solid var(--line);border-radius:12px}.revision-item strong,.revision-item small{display:block}.revision-item small{color:var(--muted);font-size:12px;margin-top:3px}
.image-lightbox{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:30px;background:rgba(1,4,10,.9);cursor:zoom-out}.image-lightbox img{max-width:95vw;max-height:92vh;object-fit:contain}.image-lightbox button{position:absolute;top:18px;right:22px;border:0;background:transparent;color:#fff;font-size:34px}
body.focus-mode .topbar,body.focus-mode .note-meta,body.focus-mode .formatbar{opacity:.18;transition:.2s}body.focus-mode .topbar:hover,body.focus-mode .note-meta:hover,body.focus-mode .formatbar:hover{opacity:1}body.preview-only .editor-pane{display:none}body.preview-only .editor-grid{grid-template-columns:minmax(0,1fr)}body.preview-only .preview-pane{max-width:960px;margin:0 auto;width:100%}
.public-page{background:radial-gradient(circle at 50% -20%,rgba(93,124,255,.18),transparent 42rem),var(--bg)}.public-shell{width:min(1100px,calc(100% - 34px));margin:0 auto}.public-topbar{min-height:75px;display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line)}.public-actions{display:flex;gap:8px}.public-hero{padding:74px 0 34px}.public-kicker{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px;font-family:var(--mono)}.public-kicker .pill{color:var(--green);border-color:rgba(104,224,161,.28);background:rgba(104,224,161,.08)}.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 9px;border:1px solid var(--line);border-radius:99px;color:var(--muted);font-size:11px}.public-title{max-width:900px;margin:18px 0 16px;font-size:clamp(36px,7vw,72px);line-height:1.03;letter-spacing:-.065em;color:var(--text)}.public-subline{display:flex;flex-wrap:wrap;gap:8px 18px;color:var(--muted);font-size:13px}.public-layout{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:58px;align-items:start;padding:25px 0 90px}.public-article{min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:clamp(24px,5vw,56px);box-shadow:var(--shadow)}.public-article .markdown-content{max-width:none;font-size:17px}.toc{position:sticky;top:98px;padding:14px 0}.toc-title{color:var(--muted-2);font:11px var(--mono);text-transform:uppercase;letter-spacing:.13em;margin-bottom:11px}.toc a{display:block;color:var(--muted);text-decoration:none;font-size:12px;padding:5px 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc a:hover{color:var(--blue)}.public-footer{padding:22px 0 35px;color:var(--muted-2);font-size:12px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (max-width:900px){.auth-layout{grid-template-columns:1fr}.auth-aside{min-height:290px}.public-layout{grid-template-columns:1fr}.toc{display:none}.editor-grid{height:calc(100vh - 175px)}}
@media (max-width:680px){.topbar{padding:0 14px}.topbar-center{display:none}.editor-shell{width:calc(100% - 20px);padding-top:12px}.note-meta{align-items:flex-start}.tool-label{display:none}.note-id{max-width:80px}.formatbar{overflow-x:auto}.formatbar button{flex:0 0 auto}.formatbar kbd{display:none}.editor-grid{display:block;height:auto;min-height:0;border-radius:0 0 13px 13px}.editor-pane,.preview-pane{min-height:calc(100vh - 230px);border-right:0}.preview-pane{display:none}body.preview-only .preview-pane{display:flex}body.preview-only .editor-pane{display:none}.editor-pane textarea{min-height:calc(100vh - 265px);padding:22px 18px}.preview-scroll{padding:25px 18px}.pane-footer{padding:0 12px}.public-shell{width:calc(100% - 24px)}.public-topbar{min-height:63px}.public-title{font-size:42px}.public-hero{padding:48px 0 20px}.public-article{padding:22px 18px;border-radius:16px}.public-article .markdown-content{font-size:16px}.auth-layout{width:calc(100% - 24px);margin:24px auto}.auth-card{padding:28px 22px;border-radius:19px}.auth-aside{padding:28px 22px;border-radius:19px}.quote{margin-bottom:35px;font-size:27px}.modal-actions{flex-direction:column}.modal-actions .button{width:100%}}
@media (prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

.password-change{padding:14px 0;border-top:1px solid var(--line)}.password-change summary{cursor:pointer;color:var(--text-soft);font-size:13px;font-weight:650}.password-fields{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:13px}.password-fields input:first-child{grid-column:1/-1}.password-fields .button{grid-column:1/-1;justify-self:start}@media(max-width:560px){.password-fields{grid-template-columns:1fr}.password-fields input:first-child,.password-fields .button{grid-column:auto}}
@media print{.public-topbar,.toc,.public-footer{display:none!important}.public-shell{width:100%}.public-hero{padding:20px 0}.public-layout{display:block;padding:0}.public-article{border:0;box-shadow:none;padding:0;background:#fff;color:#111}.markdown-content{color:#222}.markdown-content h1,.markdown-content h2,.markdown-content h3{color:#111}}
.brand-logo{display:block;width:20px;height:20px;border-radius:10px;object-fit:cover;box-shadow:0 6px 18px rgba(0,0,0,.22)}body.site-wallpaper-enabled{position:relative;z-index:0;background:transparent!important;background-image:none!important}body.site-wallpaper-enabled:before{content:"";position:fixed;inset:0;z-index:-2;background-image:var(--site-wallpaper);background-size:cover;background-position:center;background-repeat:no-repeat;background-attachment:fixed}body.site-wallpaper-enabled:after{content:"";position:fixed;inset:0;z-index:-1;background:rgba(5,9,17,.72);backdrop-filter:blur(1px)}:root[data-theme=light] body.site-wallpaper-enabled:after{background:rgba(245,247,251,.68)}.markdown-content mark{padding:.08em .28em;border-radius:.3em;background:#f5d76e;color:#251d00}.markdown-content u,.markdown-content ins{text-decoration-thickness:.1em;text-underline-offset:.18em}.markdown-content kbd{display:inline-block;padding:2px 7px;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:6px;background:var(--panel-raised);font:12px var(--mono)}.markdown-content font,.markdown-content span{max-width:100%}

.formatbar{overflow-x:auto;overflow-y:hidden;scrollbar-width:thin}.formatbar>button{flex:0 0 auto}.formatbar mark{padding:1px 4px;border-radius:4px;background:#f5d76e;color:#302400}.color-tool{position:relative;flex:0 0 32px;width:32px;height:32px;display:grid;place-items:center;border-radius:10px;color:var(--muted);cursor:pointer}.color-tool:hover{color:var(--text);background:var(--line)}.color-tool b{border-bottom:3px solid #4f9cff;line-height:18px}.color-tool input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.format-select{flex:0 0 auto;width:61px;height:32px;padding:0 5px;border:0;border-radius:9px;outline:0;background:transparent;color:var(--muted);font-size:12px}.format-select:hover,.format-select:focus{background:var(--line);color:var(--text)}.format-select option{background:var(--panel-solid);color:var(--text)}.save-tool{position:sticky;right:0;background:var(--panel-solid)!important;border-left:1px solid var(--line)!important;z-index:2}

.formatbar::-webkit-scrollbar{height:4px}.formatbar::-webkit-scrollbar-track{background:transparent}.formatbar::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:99px}

/* 全站品牌与壁纸尺寸保护 */
.brand .brand-logo,.topbar .brand-logo,.landing-nav .brand-logo,.public-topbar .brand-logo{width:20px!important;height:20px!important;max-width:20px!important;max-height:20px!important;min-width:20px;min-height:20px;object-fit:contain!important;flex:0 0 20px!important}
.brand{min-width:0}.brand>span:last-child{max-width:min(42vw,360px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
body.site-wallpaper-enabled{background-image:linear-gradient(rgba(5,9,17,.74),rgba(5,9,17,.74)),var(--site-wallpaper)!important;background-size:cover!important;background-position:center!important;background-attachment:fixed!important;background-repeat:no-repeat!important}
:root[data-theme=light] body.site-wallpaper-enabled{background-image:linear-gradient(rgba(245,247,251,.72),rgba(245,247,251,.72)),var(--site-wallpaper)!important}
body.site-wallpaper-enabled:before,body.site-wallpaper-enabled:after{display:none!important}
.site-filing{max-width:70ch;overflow-wrap:anywhere;text-align:right}
@media(max-width:600px){.site-filing{text-align:left}}

/* 表格完整网格 */
.markdown-content table{border-collapse:collapse!important;border-spacing:0!important;table-layout:auto}
.markdown-content th,.markdown-content td{border:1px solid var(--line-strong)!important}
.markdown-content tr:last-child td{border-bottom:1px solid var(--line-strong)!important}
.site-filing{color:var(--blue);text-decoration:none;overflow-wrap:anywhere}.site-filing:hover{text-decoration:underline}

/* 表格选择器与任务清单 */
.table-picker{position:fixed;z-index:220;width:286px;padding:14px;border:1px solid var(--line-strong);border-radius:12px;background:var(--panel-solid);box-shadow:0 18px 55px rgba(0,0,0,.42)}.table-picker[hidden]{display:none}.table-picker-label{margin-bottom:10px;color:var(--text-soft);font-size:12px;font-weight:700}.table-picker-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:4px}.table-picker-cell{aspect-ratio:1;min-width:0!important;height:auto!important;padding:0!important;border:1px solid var(--line-strong)!important;border-radius:4px!important;background:var(--panel-raised)!important;font-size:0!important}.table-picker-cell:hover,.table-picker-cell.active{border-color:var(--blue)!important;background:rgba(124,156,255,.28)!important}.table-picker-custom{display:grid;grid-template-columns:1fr auto 1fr auto;align-items:center;gap:7px;margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}.table-picker-custom input{min-width:0;width:100%;height:34px;border:1px solid var(--line-strong);border-radius:7px;padding:0 7px;background:var(--bg-soft);color:var(--text);text-align:center}.task-list-item{list-style:none;margin-left:-21px}.task-checkbox{width:17px;height:17px;margin:0 9px 0 0!important;vertical-align:-3px;cursor:pointer;accent-color:var(--blue-strong)}
.settings-collapsible>summary{cursor:pointer;list-style:none;font-size:18px;font-weight:750;color:var(--text);padding:2px 0}.settings-collapsible>summary::-webkit-details-marker{display:none}.settings-collapsible>summary:after{content:"＋";float:right;color:var(--muted);font-weight:400}.settings-collapsible[open]>summary:after{content:"－"}.settings-collapsible[open]>summary{margin-bottom:16px}.footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px}.footer-links a,.footer-links span{color:var(--muted);text-decoration:none}.footer-links a:hover{color:var(--blue);text-decoration:underline}

/* Latest editor controls */
.export-menu-wrap{position:relative;display:flex}.export-menu-popover,.emoji-picker{position:absolute;right:0;top:44px;z-index:230;border:1px solid var(--line-strong);border-radius:13px;background:var(--panel-solid);box-shadow:0 18px 55px rgba(0,0,0,.42)}.export-menu-popover[hidden],.emoji-picker[hidden]{display:none}.export-menu-popover{width:230px;padding:7px}.export-menu-popover button{width:100%;display:grid;gap:1px;padding:10px 12px;border:0;border-radius:9px;background:transparent;color:var(--text);text-align:left}.export-menu-popover button:hover{background:var(--line)}.export-menu-popover strong{font-size:13px}.export-menu-popover small{color:var(--muted);font-size:11px}.emoji-picker{position:fixed;right:80px;top:120px;width:300px;padding:10px;display:grid;grid-template-columns:repeat(7,1fr);gap:5px}.emoji-picker button{height:35px;min-width:0!important;padding:0!important;border:0;border-radius:8px;background:transparent;font-size:20px}.emoji-picker button:hover{background:var(--line)}.task-table-item{white-space:normal}.task-table-item>.task-checkbox{margin-left:0!important}

.password-reveal-field{position:relative;display:block!important;grid-column:1/-1}.password-reveal-field input{padding-right:48px}.password-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:0;border-radius:8px;background:transparent;color:var(--muted);display:grid;place-items:center}.password-eye:hover,.password-eye.is-visible{background:var(--line);color:var(--text)}.public-share-password{padding:14px 0;border-top:1px solid var(--line)}.public-share-password summary{cursor:pointer;color:var(--text-soft);font-size:13px;font-weight:650}
/* User accounts and personal workspace */
.account-layout{max-width:1080px}.account-switch{margin:20px 0 0;color:var(--muted);font-size:13px}.account-aside{min-height:430px}.user-shell{width:min(1180px,calc(100% - 32px));margin:auto;padding:42px 0}.user-hero{display:flex;justify-content:space-between;align-items:flex-end;gap:25px;margin-bottom:25px}.user-hero h1{margin:0;font-size:42px;letter-spacing:-.05em}.user-hero p{margin:8px 0 0;color:var(--muted);font-size:13px}.quick-create{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.quick-create input{width:260px;height:42px;border:1px solid var(--line-strong);border-radius:10px;padding:0 12px;background:var(--panel-solid);color:var(--text)}.quick-create .form-message{flex-basis:100%;min-height:16px;text-align:right}.user-note-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.user-note-card{min-width:0;padding:20px;border:1px solid var(--line);border-radius:15px;background:var(--panel-solid);box-shadow:var(--shadow)}.user-note-card.is-deleted{opacity:.72}.user-note-head{display:flex;justify-content:space-between;align-items:center}.user-note-head small{color:var(--muted);font-size:11px}.user-note-card h2{margin:16px 0 3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:18px}.user-note-card code{color:var(--muted-2);font:11px var(--mono)}.user-note-card p{height:22px;margin:15px 0;color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-note-actions{display:flex;gap:7px}.user-note-actions form{margin:0}.user-empty{grid-column:1/-1;border:1px dashed var(--line-strong);border-radius:15px}.user-password-panel{margin-top:25px}.user-password-panel .password-form{grid-template-columns:repeat(3,1fr) auto}.user-chip{color:var(--text-soft);font-size:13px;font-weight:650}@media(max-width:860px){.user-note-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.user-hero{align-items:flex-start;flex-direction:column}.quick-create{width:100%;justify-content:flex-start}.quick-create input{flex:1;width:auto}.quick-create .form-message{text-align:left}}@media(max-width:560px){.user-note-grid{grid-template-columns:1fr}.user-shell{width:calc(100% - 24px);padding-top:25px}.user-hero h1{font-size:34px}.quick-create{flex-direction:column;flex-wrap:nowrap}.quick-create input{width:100%}.quick-create .form-message{width:100%}.user-password-panel .password-form{grid-template-columns:1fr}}
/* Compact personal notebook table */
.user-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:15px;background:var(--panel-solid);box-shadow:var(--shadow)}.user-note-table{width:100%;min-width:820px;border-collapse:collapse}.user-note-table th,.user-note-table td{padding:14px 15px;border-bottom:1px solid var(--line);text-align:left;font-size:12px}.user-note-table th{color:var(--muted);font-weight:600}.user-note-table tr:last-child td{border-bottom:0}.user-note-table strong{font-size:13px}.user-note-table small{display:block;color:var(--muted);margin-top:3px}.user-note-table tr.is-deleted{opacity:.65}.user-note-actions{display:flex;gap:7px;align-items:center}.user-note-actions form{margin:0}
/* Refined public title and six-feature landing grid */
.public-title{max-width:100%;font-size:clamp(32px,5vw,58px);line-height:1.08;letter-spacing:-.045em;overflow-wrap:anywhere;word-break:break-word}.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}@media(max-width:680px){.public-title{font-size:clamp(30px,10vw,42px)}}
/* Collaboration and extended action layout */
.public-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.color-tool mark{padding:1px 4px;border-radius:4px;background:#fff176;color:#302400}.user-note-actions,.row-actions{flex-wrap:wrap}.favorite{color:#f5c96b;margin-left:6px}@media(max-width:680px){.public-topbar{align-items:flex-start;padding:12px 0}.public-actions{max-width:62%}.public-actions .button{min-height:34px}}
/* Mobile article navigation and stable wallpaper presentation */
.public-title{font-size:clamp(30px,4.6vw,52px)}
.mobile-toc-toggle,.mobile-toc-panel{display:none}
@media(max-width:900px){.mobile-toc-toggle{position:sticky;top:8px;z-index:20;display:inline-flex;align-items:center;gap:7px;margin:12px 0 0;padding:9px 12px;border:1px solid var(--line-strong);border-radius:10px;background:var(--panel-solid);color:var(--text);font-size:12px;box-shadow:var(--shadow)}.mobile-toc-panel{position:sticky;top:54px;z-index:19;display:block;margin:8px 0 4px;padding:13px;border:1px solid var(--line);border-radius:12px;background:var(--panel-solid);box-shadow:var(--shadow)}.mobile-toc-panel[hidden]{display:none}.mobile-toc-panel nav{max-height:55vh;overflow:auto}.mobile-toc-panel a{display:block;padding:7px 4px;color:var(--muted);text-decoration:none;font-size:13px;border-bottom:1px solid var(--line)}.mobile-toc-panel a:last-child{border-bottom:0}.mobile-toc-panel .toc-level-2{padding-left:16px}.public-title{font-size:clamp(28px,8vw,38px)}}
.site-wallpaper-enabled{background-image:linear-gradient(rgba(8,12,22,.68),rgba(8,12,22,.68)),var(--site-wallpaper)!important;background-size:cover;background-position:center;background-attachment:fixed}
/* Editor modes */
.editor-mode-switch{display:inline-flex;align-items:center;border:1px solid var(--line-strong);border-radius:9px;overflow:hidden;background:var(--panel-solid)}.editor-mode-switch button{height:30px;padding:0 10px;border:0;border-right:1px solid var(--line);background:transparent;color:var(--muted);font:600 11px var(--sans);cursor:pointer}.editor-mode-switch button:last-child{border-right:0}.editor-mode-switch button.active{background:var(--blue-strong);color:#fff}.rich-editor{min-width:0;min-height:0;flex:1;overflow:auto;padding:28px 30px;outline:0;color:var(--text-soft);font-size:16px;line-height:1.85;background:transparent}.rich-editor[hidden]{display:none}.rich-editor:focus{background:rgba(255,255,255,.015)}.rich-editor p:first-child{margin-top:0}.rich-editor table{width:100%;border-collapse:collapse}.rich-editor th,.rich-editor td{border:1px solid var(--line-strong);padding:8px 10px;text-align:left}.rich-editor img{max-width:100%;height:auto}.rich-editor pre{white-space:pre-wrap}.rich-editor input.task-checkbox{margin-right:8px}
/* Desktop article navigation: left, scrollable and hierarchical */
.toc-fold.is-empty{visibility:hidden}
@media(min-width:901px){.public-layout{grid-template-columns:220px minmax(0,1fr);gap:42px}.public-layout .toc{grid-column:1;grid-row:1}.public-layout .public-article{grid-column:2;grid-row:1}.toc{max-height:calc(100vh - 120px);overflow:hidden}.toc nav{max-height:calc(100vh - 165px);overflow-y:auto;overflow-x:hidden;padding-right:8px}.toc-tree,.toc-tree ul{list-style:none;margin:0;padding:0}.toc-tree ul{padding-left:13px;border-left:1px solid var(--line)}.toc-tree li{margin:0}.toc-row{display:flex;align-items:center;gap:4px;min-width:0}.toc-row a{flex:1;min-width:0}.toc-fold{width:20px;height:24px;flex:0 0 20px;padding:0;border:0;background:transparent;color:var(--muted);cursor:pointer}.toc-fold:hover{color:var(--blue)}.toc-fold.is-empty{visibility:hidden}.toc-tree a.toc-level-1{font-weight:700;color:var(--text-soft)}.toc-tree a.toc-level-2{padding-left:0}.toc-tree a.toc-level-3{font-size:11px;color:var(--muted-2)}.toc-tree ul[hidden]{display:none}}
@media(max-width:900px){.rich-editor{padding:22px 18px;min-height:calc(100vh - 265px)}.editor-mode-switch button{padding:0 8px}.meta-actions{flex-wrap:wrap}.public-layout{display:block}.public-article{margin-top:12px}.mobile-toc-panel .toc-tree,.mobile-toc-panel .toc-tree ul{list-style:none;margin:0;padding:0}.mobile-toc-panel .toc-tree ul{padding-left:14px;border-left:1px solid var(--line)}.mobile-toc-panel .toc-row{display:flex;align-items:center;gap:3px}.mobile-toc-panel .toc-row a{flex:1;border-bottom:0}.mobile-toc-panel .toc-fold{width:22px;flex:0 0 22px;border:0;background:transparent;color:var(--muted);font-size:14px}.mobile-toc-panel .toc-tree ul[hidden]{display:none}}
@media(min-width:901px){.toc nav{scrollbar-width:thin;scrollbar-color:var(--line-strong) transparent}.toc nav::-webkit-scrollbar{width:6px}.toc nav::-webkit-scrollbar-thumb{border-radius:6px;background:var(--line-strong)}}
/* More comfortable public reading on phones */
@media(max-width:680px){.public-shell{width:calc(100% - 16px)}.public-topbar{min-height:60px;padding:9px 2px;gap:8px}.public-topbar .brand span{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.public-actions{max-width:66%;gap:5px}.public-actions .icon-btn{width:34px;height:34px}.public-actions .button{height:34px;padding:0 9px;font-size:11px}.public-hero{padding:32px 4px 16px}.public-kicker{gap:7px;font-size:11px}.public-title{margin:13px 0 13px;font-size:clamp(27px,8vw,36px);line-height:1.18}.public-subline{gap:7px 12px;font-size:12px;line-height:1.6}.mobile-toc-toggle{top:6px;margin:8px 4px 0;background:rgba(18,25,42,.96);backdrop-filter:blur(12px)}:root[data-theme=light] .mobile-toc-toggle{background:rgba(255,255,255,.96)}.mobile-toc-panel{top:49px;margin:7px 4px 2px;padding:12px;max-height:62vh;overflow:auto;background:rgba(18,25,42,.98);backdrop-filter:blur(14px)}:root[data-theme=light] .mobile-toc-panel{background:rgba(255,255,255,.98)}.public-article{margin-top:10px;padding:25px 18px 30px;border-radius:13px;box-shadow:0 12px 36px rgba(0,0,0,.18)}.public-article .markdown-content{font-size:16px;line-height:1.82}.public-article .markdown-content h1{font-size:28px}.public-article .markdown-content h2{font-size:23px}.public-article .markdown-content h3{font-size:19px}.public-article .markdown-content p,.public-article .markdown-content li{overflow-wrap:anywhere}.public-article .table-wrap{margin-left:-8px;margin-right:-8px}.public-footer{padding:22px 5px 30px;line-height:1.7;flex-direction:column;align-items:flex-start}}

/* System-font-independent controls, responsive video and page jump buttons */
.ui-icon{position:relative;display:inline-block;width:16px;height:16px;flex:0 0 16px;color:currentColor;background:transparent!important;margin:0!important;box-sizing:border-box}
.formatbar .ui-icon{width:16px!important;height:16px!important;flex:0 0 16px!important;margin:0!important}
.icon-eye{width:16px;height:11px;border:1.6px solid currentColor;border-radius:75% 15%;transform:rotate(45deg)}.icon-eye:after{content:"";position:absolute;left:50%;top:50%;width:4px;height:4px;border:1.5px solid currentColor;border-radius:50%;transform:translate(-50%,-50%) rotate(-45deg)}
.icon-link:before,.icon-link:after{content:"";position:absolute;width:9px;height:5px;border:1.6px solid currentColor;border-radius:5px;transform:rotate(-42deg)}.icon-link:before{left:0;top:7px}.icon-link:after{right:0;top:3px}
.icon-image{border:1.5px solid currentColor;border-radius:2px}.icon-image:before{content:"";position:absolute;right:2px;top:2px;width:3px;height:3px;border:1px solid currentColor;border-radius:50%}.icon-image:after{content:"";position:absolute;left:2px;bottom:2px;width:0;height:0;border-left:5px solid transparent;border-right:5px solid transparent;border-bottom:7px solid currentColor}
.icon-video{border:1.5px solid currentColor;border-radius:3px}.icon-video:after{content:"";position:absolute;left:6px;top:4px;border-left:6px solid currentColor;border-top:4px solid transparent;border-bottom:4px solid transparent}
.icon-table{border:1.5px solid currentColor;border-radius:2px;background:linear-gradient(currentColor,currentColor) 0 5px/100% 1px,linear-gradient(currentColor,currentColor) 5px 0/1px 100%,linear-gradient(currentColor,currentColor) 10px 0/1px 100%!important;background-repeat:no-repeat!important}
.icon-quote:before{content:"\201C";position:absolute;left:1px;top:1px;font:11px Arial,sans-serif;line-height:1}.icon-quote:after{content:"\201D";position:absolute;right:1px;bottom:0;font:11px Arial,sans-serif;line-height:1}
.icon-list{background:radial-gradient(circle,currentColor 0 1.5px,transparent 1.8px) 0 1px/5px 5px repeat-y,linear-gradient(currentColor,currentColor) 6px 2px/10px 1.5px,linear-gradient(currentColor,currentColor) 6px 7px/10px 1.5px,linear-gradient(currentColor,currentColor) 6px 12px/10px 1.5px!important;background-repeat:repeat-y,no-repeat,no-repeat,no-repeat!important}.icon-ordered-list:before{content:"1\A 2\A 3";white-space:pre;position:absolute;left:0;top:0;font:7px/5px Arial,sans-serif}.icon-ordered-list:after{content:"";position:absolute;left:6px;top:2px;width:10px;height:1.5px;background:currentColor;box-shadow:0 5px currentColor,0 10px currentColor}.icon-check{border:1.5px solid currentColor;border-radius:2px}.icon-check:after{content:"";position:absolute;left:3px;top:3px;width:7px;height:4px;border-left:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg)}.icon-sup:before,.icon-sub:before{content:"x";position:absolute;left:1px;top:2px;font:11px Arial,sans-serif}.icon-sup:after,.icon-sub:after{content:"2";position:absolute;right:1px;font:8px Arial,sans-serif}.icon-sup:after{top:0}.icon-sub:before{top:0;font-size:10px}.icon-sub:after{bottom:0;font-size:7px;line-height:1}
.icon-undo,.icon-redo{border-top:1.7px solid currentColor;border-radius:50%}.icon-undo:before,.icon-redo:before{content:"";position:absolute;top:-3px;width:6px;height:6px;border-top:1.7px solid currentColor;border-left:1.7px solid currentColor}.icon-undo{transform:rotate(-24deg)}.icon-undo:before{left:0;transform:rotate(-34deg)}.icon-redo{transform:scaleX(-1) rotate(-24deg)}.icon-redo:before{left:0;transform:rotate(-34deg)}
.icon-align-left,.icon-align-center,.icon-align-right{background-repeat:no-repeat!important}.icon-align-left{background:linear-gradient(currentColor,currentColor) 1px 2px/14px 2px,linear-gradient(currentColor,currentColor) 1px 6px/10px 2px,linear-gradient(currentColor,currentColor) 1px 10px/14px 2px,linear-gradient(currentColor,currentColor) 1px 14px/8px 2px!important}.icon-align-center{background:linear-gradient(currentColor,currentColor) 1px 2px/14px 2px,linear-gradient(currentColor,currentColor) 3px 6px/10px 2px,linear-gradient(currentColor,currentColor) 1px 10px/14px 2px,linear-gradient(currentColor,currentColor) 4px 14px/8px 2px!important}.icon-align-right{background:linear-gradient(currentColor,currentColor) 1px 2px/14px 2px,linear-gradient(currentColor,currentColor) 5px 6px/10px 2px,linear-gradient(currentColor,currentColor) 1px 10px/14px 2px,linear-gradient(currentColor,currentColor) 7px 14px/8px 2px!important}
.icon-theme{border:1.5px solid currentColor;border-radius:50%;overflow:hidden}.icon-theme:after{content:"";position:absolute;left:7px;top:-2px;width:9px;height:18px;background:currentColor}
.icon-focus{background:linear-gradient(currentColor,currentColor) 0 0/6px 1.5px,linear-gradient(currentColor,currentColor) 0 0/1.5px 6px,linear-gradient(currentColor,currentColor) 100% 0/6px 1.5px,linear-gradient(currentColor,currentColor) 100% 0/1.5px 6px,linear-gradient(currentColor,currentColor) 0 100%/6px 1.5px,linear-gradient(currentColor,currentColor) 0 100%/1.5px 6px,linear-gradient(currentColor,currentColor) 100% 100%/6px 1.5px,linear-gradient(currentColor,currentColor) 100% 100%/1.5px 6px!important;background-repeat:no-repeat!important}.icon-download:before{content:"";position:absolute;left:7px;top:1px;height:9px;border-left:2px solid currentColor}.icon-download:after{content:"";position:absolute;left:4px;top:5px;width:6px;height:6px;border-left:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg)}.icon-external{border:1.5px solid currentColor;border-radius:2px}.icon-external:before{content:"";position:absolute;right:-2px;top:-2px;width:8px;height:8px;border-top:2px solid currentColor;border-right:2px solid currentColor}.icon-external:after{content:"";position:absolute;right:1px;top:1px;width:8px;border-top:2px solid currentColor;transform:rotate(-45deg);transform-origin:right center}
.icon-print{border:1.5px solid currentColor;border-radius:2px;margin-top:3px!important}.icon-print:before{content:"";position:absolute;left:2px;right:2px;top:-5px;height:6px;border:1.5px solid currentColor;background:var(--panel-solid)}.icon-print:after{content:"";position:absolute;left:2px;right:2px;bottom:-4px;height:6px;border:1.5px solid currentColor;background:var(--panel-solid)}
.icon-preview{border:1.5px solid currentColor;border-radius:2px}.icon-preview:after{content:"";position:absolute;left:7px;top:0;height:100%;border-left:1.5px solid currentColor}.icon-history{border:1.5px solid currentColor;border-left-color:transparent;border-radius:50%}.icon-history:before{content:"";position:absolute;left:-1px;top:0;width:5px;height:5px;border-left:1.5px solid currentColor;border-top:1.5px solid currentColor}.icon-history:after{content:"";position:absolute;left:7px;top:3px;width:1.5px;height:5px;background:currentColor;box-shadow:2px 4px 0 -.2px currentColor;transform-origin:bottom}.icon-settings{border:2px dotted currentColor;border-radius:50%}.icon-settings:after{content:"";position:absolute;left:4px;top:4px;width:4px;height:4px;border:1.5px solid currentColor;border-radius:50%}.icon-calendar{border:1.5px solid currentColor;border-radius:2px}.icon-calendar:before{content:"";position:absolute;left:0;right:0;top:4px;border-top:1.5px solid currentColor}.icon-calendar:after{content:"";position:absolute;left:3px;top:-3px;width:7px;height:4px;border-left:1.5px solid currentColor;border-right:1.5px solid currentColor}.icon-divider:after{content:"";position:absolute;left:1px;right:1px;top:7px;border-top:2px solid currentColor}.icon-lock{width:15px;height:12px;margin-top:4px!important;border:1.5px solid currentColor;border-radius:2px}.icon-lock:before{content:"";position:absolute;left:3px;top:-8px;width:6px;height:7px;border:1.5px solid currentColor;border-bottom:0;border-radius:6px 6px 0 0}
.icon-scroll-up:before,.icon-scroll-down:before{content:"";position:absolute;left:4px;top:5px;width:7px;height:7px;border-left:2px solid currentColor;border-top:2px solid currentColor}.icon-scroll-up:before{transform:rotate(45deg)}.icon-scroll-down:before{top:2px;transform:rotate(225deg)}
.scroll-jump-controls{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));z-index:80;display:grid;gap:8px;transition:opacity .2s,transform .2s}.scroll-jump-controls.is-hidden{opacity:0;pointer-events:none;transform:translateY(8px)}.scroll-jump-controls button{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line-strong);border-radius:9px;background:var(--panel-solid);color:var(--text-soft);box-shadow:0 8px 24px rgba(0,0,0,.2);cursor:pointer}.scroll-jump-controls button:hover{color:var(--blue);border-color:rgba(124,156,255,.55)}
.rich-editor{width:100%!important;max-width:none!important;margin:0!important;align-self:stretch;box-sizing:border-box;text-align:left;white-space:pre-wrap;overflow-wrap:anywhere}.rich-editor:empty:before{content:"开始输入内容...";color:var(--muted-2);pointer-events:none}.rich-editor p:empty{min-height:1.85em}
.markdown-content video{display:block;width:auto;max-width:100%;height:auto;max-height:80vh;margin:24px auto;border:1px solid var(--line-strong);border-radius:10px;background:#000;box-shadow:0 12px 35px rgba(0,0,0,.22)}
.video-size-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field-hint{display:block;color:var(--muted);line-height:1.65}
.toolbar-svg{display:block;width:19px;height:19px;overflow:visible}.formatbar .toolbar-svg{width:18px;height:18px}.stream-message{margin:8px auto 18px;color:var(--muted);font-size:12px;text-align:center}.stream-message[hidden]{display:none}
.emoji-picker,.emoji-picker button,[data-action="toggle-emoji-picker"]{font-family:"Segoe UI Emoji","Apple Color Emoji","Noto Color Emoji",sans-serif}
@media(max-width:680px){.scroll-jump-controls{right:max(10px,env(safe-area-inset-right));bottom:max(12px,env(safe-area-inset-bottom))}.scroll-jump-controls button{width:36px;height:36px}.video-size-grid{grid-template-columns:1fr}.rich-editor{padding-left:18px!important;padding-right:18px!important}.markdown-content video{margin:18px auto;border-radius:8px}}
@media print{.scroll-jump-controls{display:none!important}}
/* 公式模板选择器 */
.formula-modal-card{max-width:720px;width:min(92vw,720px)}
.formula-quick{display:flex;gap:8px;margin:14px 0 8px}
.formula-quick input{flex:1;min-width:0;height:40px;border:1px solid var(--line);border-radius:9px;padding:0 12px;background:var(--bg-soft);color:var(--text)}
.formula-toolbar{display:flex;gap:10px;align-items:center;margin:8px 0}
.formula-toolbar input{flex:1;min-width:0;height:38px;border:1px solid var(--line);border-radius:9px;padding:0 12px;background:var(--bg-soft);color:var(--text)}
.formula-mode-group{display:inline-flex;gap:4px;align-items:center;flex:0 0 auto}
.formula-mode{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--muted);cursor:pointer;padding:4px 8px;border:1px solid var(--line);border-radius:8px}
.formula-mode:has(input:checked){color:var(--text);border-color:var(--blue-strong)}
.formula-cats{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 12px}
.formula-cats button{height:28px;padding:0 11px;border:1px solid var(--line);border-radius:99px;background:transparent;color:var(--muted);font-size:12px;cursor:pointer}
.formula-cats button.active{color:#fff;background:var(--blue-strong);border-color:var(--blue-strong)}
.formula-list{max-height:min(58vh,460px);overflow:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:8px;padding-right:4px}
.formula-tpl{border:1px solid var(--line);border-radius:11px;background:var(--bg-soft);padding:10px 11px;display:flex;flex-direction:column;gap:7px}
.formula-tpl-head{display:flex;align-items:baseline;gap:8px;min-width:0}
.formula-tpl-head strong{font-size:13px;color:var(--text)}
.formula-tpl-head small{font-size:10px;color:var(--muted-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.formula-tpl code{display:block;font:11px var(--mono);color:var(--text-soft);background:var(--panel-solid);border:1px solid var(--line);border-radius:7px;padding:6px 8px;overflow:auto;white-space:nowrap;user-select:all}
.formula-tpl-actions{display:flex;justify-content:flex-end;gap:6px}
.formula-tpl-fields{display:grid;gap:6px;border-top:1px dashed var(--line);padding-top:7px}
.formula-tpl-fields label{display:grid;gap:4px;font-size:11px;color:var(--muted)}
.formula-tpl-fields input{height:32px;border:1px solid var(--line);border-radius:7px;padding:0 9px;background:var(--panel-solid);color:var(--text);font-size:12px}
/* 公式渲染 */
.markdown-content .katex-display{margin:1em auto;overflow-x:auto;overflow-y:hidden;padding:2px 0}
.doudou-math{display:inline-block;max-width:100%}
.formula-err{display:inline-block;padding:2px 7px;border:1px dashed rgba(239,68,68,.45);border-radius:6px;color:#f87171;font-size:12px;font-family:var(--mono);background:rgba(239,68,68,.08)}
.doudou-chart{margin:14px 0;border:1px dashed rgba(120,130,150,.35);border-radius:10px;background:rgba(255,255,255,.45);padding:12px;overflow-x:auto;position:relative;}
.doudou-chart .mermaid-code,.doudou-chart pre.mermaid,.doudou-chart pre[class*=mermaid]{background:transparent!important;border:0;text-align:center;font-size:0!important;min-height:60px;}
.doudou-chart .mermaid-code svg,.doudou-chart pre.mermaid svg,.doudou-chart pre[class*=mermaid] svg{display:block;margin:0 auto;}
.doudou-chart[data-chart-kind="echarts"]{min-height:320px;}
.doudou-chart[data-chart-kind="echarts"]>div{width:100%;min-height:320px;}
.doudou-chart svg{max-width:100%;height:auto;}
.rich-editor .doudou-chart{cursor:default;user-select:none;}
/* chart picker uses formula-picker classes (no new CSS needed) */