:root{color-scheme:dark;font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;color:#eaf0ff;background:#0c1121;font-synthesis:none;--muted:#aebbd7;--line:#ffffff1c;--accent:#c0b5ff;--panel:#161e33}
*{box-sizing:border-box}body{margin:0;min-width:320px}button,input,textarea,select{font:inherit}button,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button:focus-visible,summary:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}[hidden]{display:none!important}h1,h2,h3,p{overflow-wrap:anywhere}h2{font-size:1.2rem}h3{font-size:1rem}p{line-height:1.7}small,.small{font-size:.8rem}.muted{color:var(--muted)}.ambient{position:fixed;z-index:-1;pointer-events:none;width:450px;height:450px;max-width:90vw;border-radius:50%;filter:blur(110px);opacity:.15}.ambient-one{background:#9272ff;top:-240px;left:0}.ambient-two{background:#219fbc;bottom:-260px;right:0}.shell{max-width:1500px;margin:auto;padding:28px 34px 64px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:30px}.brand{display:flex;align-items:center;gap:10px;font-weight:750;letter-spacing:.01em}.brand-mark{display:grid;place-items:center;width:36px;height:36px;flex:none;border-radius:12px;color:#211a43;background:var(--accent);font-size:24px}.user-chip{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.88rem;min-width:0}.user-chip>span{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.eyebrow{color:var(--accent);font-size:.74rem;text-transform:uppercase;letter-spacing:.16em;margin-top:24px}.btn{border:1px solid transparent;border-radius:10px;padding:10px 15px;color:#19142b;background:var(--accent);font-weight:650;line-height:1.4}.btn:hover:not(:disabled){filter:brightness(1.12)}.btn.secondary{color:#eaf0ff;background:#ffffff0b;border-color:var(--line)}.btn.ghost{color:#c1cdea;background:transparent;padding:7px 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h2{margin-bottom:8px}.premise{white-space:pre-wrap;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.tag{display:inline-block;font-size:.78rem;background:#c0b5ff17;color:#d6ceff;border-radius:24px;padding:5px 9px;overflow-wrap:anywhere}.empty{text-align:center;padding:48px 20px;color:var(--muted)}.new-project,.account-panel{margin-top:22px}.new-project .form{max-width:740px}.workspace{display:grid;grid-template-columns:235px minmax(0,1fr);gap:22px;align-items:start}.sidebar{position:sticky;top:20px;border-radius:16px;padding:18px;min-width:0}.project-title{font-size:1.2rem;margin:18px 0 0}.chapter-list{display:grid;gap:7px;margin-top:24px;max-height:45vh;overflow:auto}.chapter{border:1px solid transparent;background:transparent;display:flex;justify-content:space-between;gap:12px;align-items:center;text-align:left;padding:12px;border-radius:9px;color:var(--muted);min-width:0}.chapter span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chapter small{color:#8595b7}.chapter.active{background:#c0b5ff16;border-color:#c0b5ff38;color:#eae5ff}.chapter:hover{background:#ffffff0a}.writing-column{display:grid;gap:16px;min-width:0}.editor{border-radius:18px;overflow:hidden;background:#121a2c}.editor-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;padding:14px 20px;border-bottom:1px solid var(--line)}#save-status{font-size:.82rem;color:#98e3d0;max-width:100%;overflow-wrap:anywhere}#save-status[data-warning=true]{color:#ffcea3}.editor-toolbar .btn{font-size:.8rem}fieldset{border:0;margin:0;padding:0;min-width:0}#chapter-title{display:block;width:100%;padding:26px 30px 14px;border:0;background:transparent;color:#fff;outline:0;font-size:1.35rem;font-weight:700}#chapter-content{display:block;width:100%;min-height:60vh;resize:vertical;padding:10px 30px 32px;background:transparent;border:0;color:#eaf0ff;outline:0;font:1.06rem/2 "Noto Serif SC","SimSun",serif;tab-size:2}#chapter-title:focus-visible,#chapter-content:focus-visible{box-shadow:inset 3px 0 var(--accent)}.editor-footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;padding:12px 20px;font-size:.76rem;color:var(--muted)}.form{display:grid;gap:16px;margin-top:22px}.label{display:grid;gap:8px;color:#c3cee6;font-size:.87rem;min-width:0}.input,.select{display:block;width:100%;min-width:0;border:1px solid #ffffff28;border-radius:9px;padding:12px;color:#f3f6ff;background:#0e1527;outline:none;line-height:1.5}.input:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #c0b5ff16}textarea.input{resize:vertical}.form-row{display:grid;grid-template-columns:minmax(100px,1fr) minmax(0,3fr);gap:16px}.form-message,.notice{color:#ffd1b8}.notice{border:1px solid #edb88c55;border-radius:10px;background:#aa68231a;padding:12px 16px;white-space:pre-wrap}.form-message{margin:0;white-space:pre-wrap}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:min(470px,100%);padding:38px;border-radius:22px}.login-card h1{font-size:2rem;line-height:1.4}.login-card .btn{width:100%}summary{cursor:pointer;font-weight:650;line-height:1.7}#settings-fields{display:grid;gap:18px}.history-row{display:flex;gap:14px;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:12px 0;font-size:.84rem;overflow-wrap:anywhere}.history-row small{display:block;color:var(--muted);margin-top:4px}.history-row .btn{flex:none;font-size:.8rem}#draft-history{max-height:310px;overflow:auto;margin-top:12px}.conflict{border-color:#f4bf8766}.conflict-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.conflict-columns>div{min-width:0}pre{white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;font:inherit;line-height:1.8;background:#0b1221;border:1px solid var(--line);border-radius:10px;padding:16px;max-height:380px;overflow:auto}.preview-head{display:flex;justify-content:space-between;gap:14px;align-items:center;margin-top:24px}.ledger-list{list-style:none;padding:0}.ledger-list li{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.ledger-list small{display:block;color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:820px){.shell{padding:18px 18px 40px}.workspace{grid-template-columns:1fr}.sidebar{position:static;padding:16px}.chapter-list{display:flex;overflow:auto;max-height:none;margin-top:14px}.chapter{flex:0 0 auto;max-width:220px}.sidebar .form{grid-template-columns:1fr auto;align-items:end;margin-top:14px}.sidebar .small{margin-bottom:0}.topbar{flex-wrap:wrap}.user-chip{margin-left:auto}.hero h1{font-size:2.5rem}.writing-column{gap:14px}.card{padding:18px}#chapter-content{min-height:55vh}.form-row{grid-template-columns:1fr}.conflict-columns{grid-template-columns:1fr}.user-chip>span{max-width:190px}}
@media(max-width:480px){.shell{padding:14px 12px 32px}.brand{font-size:.95rem}.topbar{gap:14px;margin-bottom:22px}.user-chip{width:100%;justify-content:flex-end}.user-chip>span{margin-right:auto;max-width:190px}.hero{align-items:flex-end}.hero h1{font-size:2rem}.hero .btn{flex:none;font-size:.8rem}#chapter-title{padding:22px 18px 12px}#chapter-content{padding:8px 18px 24px;font-size:1rem}.editor-toolbar{padding:12px}.editor-footer{padding:12px;font-size:.7rem}.login-card{padding:26px 22px}.login-card h1{font-size:1.8rem}.history-row{align-items:flex-start}.history-row .btn{max-width:95px}.ledger-list li{flex-wrap:wrap}.sidebar .form{grid-template-columns:1fr}.toolbar .btn{font-size:.83rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.captcha-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.captcha-row img{width:180px;height:60px;max-width:100%;object-fit:contain;background:#f4f2ec;border-radius:8px}.captcha-row .btn{width:auto}.login-card #captcha-status,.login-card #email-status{margin:0}
a.btn{text-decoration:none;display:inline-block;white-space:nowrap}