:root{--mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:#173e49;background:#eaf1f0;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 85% 12%,#d2e9e5 0,transparent 29%),#eaf1f0}button,input,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.shell{max-width:1120px;min-height:100vh;margin:auto;padding:0 28px;display:flex;flex-direction:column}.topbar{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #b9d0d0}.brand{display:flex;gap:11px;align-items:center;font-size:17px;font-weight:700;letter-spacing:.02em}.brand-mark{width:31px;height:31px;border-radius:8px;background:#206a76;color:white;display:grid;place-items:center;font:27px var(--mono);line-height:1}.top-note,.footer{color:#60838a;font-size:12px}.footer{margin-top:auto;padding:25px 0;display:flex;justify-content:space-between;border-top:1px solid #b9d0d0}main{flex:1}.hero{padding:74px 0 52px;display:flex;justify-content:space-between;gap:45px;align-items:end}.hero h1{font-size:clamp(40px,6.2vw,78px);letter-spacing:-.075em;line-height:1.12;margin:0;font-weight:700}.hero p{font-size:15px;line-height:1.9;color:#50727a;margin:22px 0 0;max-width:420px}.hero-art{flex:none;width:235px;height:185px;position:relative}.sheet{position:absolute;width:170px;height:128px;background:#fff;border:1px solid #a8caca;border-radius:12px;box-shadow:0 14px 30px #16455312;transform:rotate(-9deg);top:12px;left:22px;padding:25px}.sheet:nth-child(2){transform:rotate(9deg);left:54px;top:28px;background:#d9ece9}.sheet:nth-child(3){transform:rotate(0deg);left:38px;top:20px;background:#f9fcfa}.sheet i{display:block;height:7px;background:#c5d9d8;border-radius:5px;margin-bottom:14px}.sheet i:nth-child(2){width:74%}.sheet i:nth-child(3){width:45%}.section-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px}.section-head h2{font-size:21px;margin:0;letter-spacing:-.035em}.count{font-family:var(--mono);color:#6f9296;font-size:13px;margin-left:8px;font-weight:400}.primary,.secondary,.danger,.icon-button{border:0;border-radius:10px;min-height:42px;padding:0 17px;font-weight:600}.primary{background:#176c77;color:white;box-shadow:0 5px 12px #176c7725}.primary:hover{background:#10545d}.secondary{background:#dcebe9;color:#1b6370}.secondary:hover{background:#cde2df}.danger{background:#fff0ed;color:#ab5145}.danger:hover{background:#ffe2dc}.icon-button{background:transparent;color:#57787d;padding:0 10px}.room-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:72px}.room-card{min-height:118px;background:#f9fcfa;border:1px solid #cee0df;border-radius:14px;padding:21px 22px;display:flex;align-items:center;justify-content:space-between;gap:12px;transition:transform .15s,border-color .15s}.room-card:hover{transform:translateY(-2px);border-color:#7caaa9}.room-name{font-size:18px;font-weight:600;letter-spacing:-.025em;overflow-wrap:anywhere}.room-meta{color:#739198;font-size:12px;margin-top:13px;display:flex;gap:12px}.room-arrow{font-size:21px;color:#83a5a8}.empty{padding:55px 25px;border:1px dashed #aac9c8;border-radius:14px;text-align:center;color:#66858b;grid-column:1/-1;background:#ffffff59}.empty strong{display:block;color:#22535c;font-size:17px;margin-bottom:9px}.room-top{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:44px 0 29px}.back{color:#577b81;font-size:13px}.back:hover{text-decoration:underline}.room-top h1{font-size:clamp(28px,4vw,42px);letter-spacing:-.05em;margin:15px 0 8px;overflow-wrap:anywhere}.room-sub{color:#6f8d92;font-size:13px}.room-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:end}.workspace{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(275px,.85fr);gap:18px;margin-bottom:70px}.panel{background:#f9fcfa;border:1px solid #cee0df;border-radius:16px;overflow:hidden}.panel-head{min-height:64px;padding:18px 22px;border-bottom:1px solid #e0eae8;display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-head h2{margin:0;font-size:15px}.status{font-size:12px;color:#6d8d91;display:flex;align-items:center;gap:7px}.dot{width:7px;height:7px;border-radius:50%;background:#a5b4b7}.dot.live{background:#41a88e;box-shadow:0 0 0 3px #41a88e20}.editor{width:100%;min-height:445px;resize:vertical;background:transparent;border:0;outline:0;padding:24px;color:#244c54;font-size:15px;line-height:1.85}.editor::placeholder{color:#9db5b8}.editor:focus-visible{box-shadow:inset 0 0 0 2px #4b9a9d}.editor-foot{padding:12px 21px;border-top:1px solid #e0eae8;display:flex;justify-content:space-between;color:#8ca6aa;font-size:11px}.files{padding:13px}.file-empty{color:#92aaad;font-size:13px;padding:34px 12px;text-align:center;line-height:1.8}.file-item{display:flex;align-items:center;gap:10px;padding:12px 8px;border-bottom:1px solid #e4edeb}.file-item:last-child{border:0}.file-icon{width:34px;height:38px;border-radius:6px;background:#e2efed;color:#287380;display:grid;place-items:center;font-size:16px;flex:none}.file-details{min-width:0;flex:1}.file-name{font-size:13px;font-weight:600;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-size{font:11px var(--mono);color:#91a8ab;margin-top:5px}.upload{margin:8px 18px 20px;width:calc(100% - 36px);min-height:48px;border:1px dashed #80aaa9;border-radius:10px;background:#edf6f4;color:#246771;font-weight:600}.upload:hover{background:#dceeea}.hint{font-size:11px;color:#8ca5a7;margin:0 20px 20px;line-height:1.7}.modal-backdrop{position:fixed;inset:0;background:#123b46a8;display:grid;place-items:center;padding:18px;z-index:5}.modal{width:min(100%,430px);background:#f9fcfa;border-radius:18px;padding:30px;box-shadow:0 25px 80px #102f3b50}.modal h2{margin:0 0 8px;font-size:24px;letter-spacing:-.04em}.modal p{color:#66868c;font-size:13px;line-height:1.7;margin:0 0 23px}.field{display:block;font-size:13px;font-weight:600;margin:17px 0 0}.field input{display:block;width:100%;height:46px;border:1px solid #bfd4d4;border-radius:9px;padding:0 13px;margin-top:8px;background:white;outline:0;color:#1a424b}.field input:focus{border-color:#287987;box-shadow:0 0 0 3px #2879871e}.field small{display:block;color:#8aa3a6;margin-top:6px;font-weight:400}.modal-actions{display:flex;justify-content:end;gap:9px;margin-top:26px}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,18px);background:#1c4c56;color:#fff;padding:11px 17px;border-radius:9px;box-shadow:0 10px 25px #153f4a40;font-size:13px;opacity:0;pointer-events:none;transition:.2s;z-index:10;max-width:90vw;text-align:center}.toast.show{opacity:1;transform:translate(-50%,0)}.loading{padding:100px 0;text-align:center;color:#66858b}.error-page{padding:90px 0}.error-page h1{font-size:34px;letter-spacing:-.05em}.error-page p{color:#68888e;margin-bottom:24px}:focus-visible{outline:3px solid #56a9ae;outline-offset:3px}@media(max-width:740px){.shell{padding:0 17px}.topbar{height:69px}.top-note{display:none}.hero{padding:52px 0 38px}.hero-art{display:none}.room-list{grid-template-columns:1fr;margin-bottom:45px}.room-top{align-items:start;flex-direction:column;padding:34px 0 24px}.room-actions{justify-content:start}.workspace{grid-template-columns:1fr;gap:14px;margin-bottom:45px}.editor{min-height:320px}.footer{gap:10px;flex-wrap:wrap}.modal{padding:24px}}

/* Compact room list and note wall */
.topbar{height:62px}.hero{padding:42px 0 32px;align-items:center}.hero h1{font-size:clamp(38px,5vw,58px)}.hero p{margin-top:12px;max-width:560px;font-size:14px;line-height:1.65}.hero-art{transform:scale(.75);transform-origin:right center;height:130px}.room-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-bottom:38px}.room-card{min-height:88px;padding:15px 17px;border-radius:10px}.room-name{font-size:15px}.room-meta{margin-top:7px;font-size:11px}.room-top{padding:26px 0 20px}.room-top h1{font-size:30px;margin:8px 0 3px}.room-sub{font-size:12px}.room-actions{align-items:center}.room-actions .primary,.room-actions .secondary,.room-actions .danger{min-height:36px;padding:0 13px}.workspace{grid-template-columns:minmax(0,2fr) minmax(245px,.75fr);gap:14px;margin-bottom:40px;align-items:start}.notes-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.notes-head h2{font-size:17px;margin:0}.notes-head .primary{min-height:36px;padding:0 13px;font-size:13px}.note-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.note-card{min-width:0;background:#fffdf2;border:1px solid #e3dcb8;border-radius:10px;overflow:hidden;box-shadow:0 3px 8px #4b50310c}.note-card:nth-child(4n+2){background:#f0f8f5;border-color:#cee4da}.note-card:nth-child(4n+3){background:#f5f3fb;border-color:#ded7eb}.note-card:nth-child(4n+4){background:#fff4ef;border-color:#edd8cc}.note-top{height:37px;padding:0 9px 0 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #173e4915}.note-number{font:500 11px var(--mono);color:#5c7374}.note-top .icon-button{min-height:30px;padding:0 5px;font-size:17px}.note-editor{display:block;width:100%;height:154px;resize:vertical;background:transparent;border:0;outline:0;padding:13px 14px;color:#29454b;font-size:13px;line-height:1.65}.note-editor::placeholder{color:#a2adaa}.note-editor:focus-visible{box-shadow:inset 0 0 0 2px #4b9a9d}.note-foot{height:28px;padding:0 13px;display:flex;align-items:center;justify-content:space-between;color:#829697;font-size:10px;border-top:1px solid #173e4912}.note-empty{grid-column:1/-1;min-height:172px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px dashed #a8c9c7;border-radius:10px;color:#769394;font-size:12px}.note-empty strong{font-size:15px;color:#35656b}.file-panel .panel-head{min-height:46px;padding:11px 15px}.file-panel .files{padding:5px 9px}.file-panel .file-item{padding:8px 4px}.file-panel .upload{min-height:37px;margin:7px 12px 11px;width:calc(100% - 24px);font-size:12px}.file-panel .hint{margin:0 13px 13px}.file-panel .file-empty{padding:23px 5px}.footer{padding:15px 0}@media(max-width:900px){.room-list{grid-template-columns:repeat(2,minmax(0,1fr))}.workspace{grid-template-columns:minmax(0,1.7fr) minmax(225px,.8fr)}}@media(max-width:740px){.topbar{height:58px}.hero{padding:35px 0 25px}.room-list{grid-template-columns:1fr}.room-top{padding:22px 0 18px}.room-actions{justify-content:start}.workspace{grid-template-columns:1fr}.note-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.note-grid{grid-template-columns:1fr}.note-editor{height:130px}.room-actions .status{width:100%}}
.note-top .copy-note{font-size:11px}.note-editor{height:112px}@media(max-width:520px){.note-editor{height:110px}}
@media(max-width:520px){.room-actions{width:100%;justify-content:space-between}.room-actions .status{width:auto}}
.shell{max-width:none;width:100%;padding:0 clamp(18px,2.2vw,36px)}.room-list{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}.workspace{grid-template-columns:minmax(0,1fr) 300px}.note-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}@media(max-width:980px){.workspace{grid-template-columns:1fr}.file-panel{max-width:none}}@media(max-width:740px){.shell{padding:0 17px}.room-list{grid-template-columns:1fr}.note-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}}