:root{--ink:#30261f;--muted:#695543;--line:#e5d5c0;--blue:#246fd8;--paper:#fffaf3}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:radial-gradient(ellipse at 10% 0,#fff5d8,transparent 55%),linear-gradient(140deg,#f8f0df,#f2e6dc);color:var(--ink);font:600 14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;min-height:100dvh}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.55}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #7ba8e8;outline-offset:3px}.page{max-width:1140px;margin:auto;padding:26px 28px 22px}.header{display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;gap:11px;align-items:center;font-size:20px;font-weight:750;letter-spacing:.4px}.brand small{display:block;font-size:10px;color:var(--muted);letter-spacing:2px;font-weight:600;margin-top:1px}.brand-mark{display:grid;place-items:center;width:44px;height:44px;background:#fff8ed;border:1px solid #cfb497;border-radius:14px;color:#88583c;font-size:18px}.header nav{display:flex;gap:8px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #d8c2a7;background:#fffaf3;padding:8px 13px;min-height:38px;border-radius:9px;font-size:12px;font-weight:700;white-space:nowrap}.button:hover{background:#f2e5d4}.button.primary{background:var(--blue);color:#fff;border-color:var(--blue)}.button.primary:hover{background:#1e5fb9}.quiet-button{background:#ffffff70}.hero{display:flex;align-items:center;justify-content:space-between;padding:34px 6px 28px;gap:22px}.eyebrow{font-size:11px;letter-spacing:2px;color:#8a603e}.hero h1{font-size:32px;letter-spacing:1px;margin:7px 0 5px;line-height:1.35}.hero p{margin:0;color:var(--muted);font-size:13px}.hero-symbol{width:130px;flex:none;margin-right:20px}.hero-symbol svg{width:100%;display:block;filter:drop-shadow(0 7px 10px #9b745718)}.library{background:#fffcf8;border:1px solid #e5d5c0;border-radius:18px;box-shadow:0 12px 40px #70513b0d;min-height:380px;overflow:hidden}.toolbar{padding:18px 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);flex-wrap:wrap}.tabs{display:flex;gap:4px;background:#f2e8d9;border-radius:9px;padding:4px;flex:none}.tabs button{font-size:12px;background:none;border:0;padding:5px 14px;border-radius:6px;color:var(--muted);font-weight:700}.tabs button.active{background:#fffcf8;box-shadow:0 2px 6px #70513b10;color:#3d3024}.search{margin-left:auto;display:flex;gap:8px;align-items:center;border:1px solid var(--line);background:#fffaf2;border-radius:9px;padding:7px 11px;max-width:320px;flex:1;min-width:160px}.search svg{height:16px;width:16px;stroke:#7d634e;stroke-width:1.7;flex:none}.search input{width:100%;min-width:0;border:0;background:none;outline:0;font-size:12px;color:var(--ink)}input::placeholder{color:#7f6a56}.manage-tools{display:flex;gap:8px}.location{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:16px 22px 12px}.location nav{display:flex;align-items:center;flex-wrap:wrap;gap:6px;min-width:0}.crumb{background:none;border:0;font-size:12px;font-weight:650;padding:3px;color:#70563f;max-width:100%;overflow-wrap:anywhere}.crumb.current{color:#30261f}.crumb:hover{text-decoration:underline}.crumb-separator{color:#aa947d}.location>span{font-size:11px;color:var(--muted);white-space:nowrap}.grid{padding:6px 20px 24px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:start}.card{border:1px solid var(--line);border-radius:12px;background:#fffaf2;overflow:hidden;min-width:0}.video-frame{background:#261f19;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;position:relative}.video-frame video{width:100%;height:100%;display:block;object-fit:contain;position:absolute;inset:0}.video-failure{margin:10px;color:#fff1df;font-size:12px;text-align:center;position:relative;background:#261f19dd;z-index:1;padding:8px}.card-body{padding:13px 14px}.card h2{font-size:14px;font-weight:700;margin:0;line-height:1.5;overflow-wrap:anywhere}.card-meta{font-size:10px;color:var(--muted);display:flex;justify-content:space-between;gap:8px;margin-top:7px}.card-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:13px}.kind-label{color:#795b3c;background:#efdfc9;padding:2px 7px;border-radius:5px;font-size:10px}.card .download{font-size:12px;font-weight:700;color:#205fb6;display:flex;align-items:center;gap:5px;padding:4px}.file-intro{display:flex;align-items:flex-start;gap:12px}.file-icon{flex:none;display:grid;place-items:center;width:42px;height:48px;background:#eee3d2;color:#826244;border:1px solid #dcc6a8;border-radius:8px;font-size:10px;letter-spacing:.3px}.file-text{flex:1;min-width:0;padding-top:1px}.folder-open{display:flex;gap:11px;align-items:center;width:100%;text-align:left;border:0;background:none;padding:16px 14px}.folder-open:hover{background:#f2e2cb}.folder-icon{font-size:31px;color:#b58a4e;line-height:1}.folder-open strong{font-size:14px;overflow-wrap:anywhere}.folder-open small{display:block;color:var(--muted);font-size:10px}.folder-chevron{margin-left:auto;color:#94785c}.card-tools{display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--line);padding:8px 12px;background:#f6ebdc}.card-tools button{border:0;background:none;font-size:11px;padding:4px;color:#61472f;font-weight:650}.card-tools .remove{color:#a43d32;margin-left:auto}.card.unpublished{border-style:dashed}.unpublished-label{font-size:10px;color:#a43d32;background:#fbe7e2;padding:2px 6px;border-radius:4px;margin-right:5px}.empty{padding:35px 20px 55px;text-align:center}.empty-symbol{display:inline-grid;place-items:center;width:72px;height:64px;font-size:52px;font-weight:400;color:#b79b7c;background:#f6ebdc;border-radius:16px}.empty h2{font-size:17px;margin:14px 0 5px}.empty p{font-size:12px;color:var(--muted);margin:0}.error{color:#a1392d;background:#ffefeb;border:1px solid #ebc0b3;border-radius:8px;font-size:12px;padding:10px 12px;overflow-wrap:anywhere}.library>#error{margin:14px 20px}.admin-hint{font-size:11px;color:#71573e;padding:0 22px;margin:0 0 10px}.upload-panel{padding:14px 20px;background:#f3eadc;display:grid;grid-template-columns:1fr auto;gap:8px 16px;align-items:center}.upload-panel>div{display:flex;justify-content:space-between;gap:14px;min-width:0;font-size:12px}.upload-panel strong{overflow-wrap:anywhere}.upload-panel progress{width:100%;height:9px;accent-color:var(--blue);grid-row:2}.upload-panel .button{grid-column:2;grid-row:1/3}footer{display:flex;gap:12px;align-items:center;padding:22px 4px 0;font-size:11px;color:#705940}footer span{color:#8d7661}footer a{margin-left:auto;text-decoration:underline;text-underline-offset:3px}dialog{border:1px solid #d4bda1;border-radius:16px;background:#fffbf5;color:var(--ink);padding:22px;width:min(420px,calc(100vw - 32px));box-shadow:0 20px 80px #49332630}dialog::backdrop{background:#31221966}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:16px}.dialog-top h2{font-size:18px;margin:0}.close{border:0;background:none;font-size:26px;color:#7b6049;line-height:1;padding:4px}dialog label{display:block;font-size:12px;margin:18px 0 7px}dialog input{width:100%;padding:10px 12px;border:1px solid #d4bda1;border-radius:8px;background:#fff;color:var(--ink)}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:10px 18px;border-radius:9px;background:#6a4933;color:#fffaf3;font-size:12px;max-width:calc(100vw - 28px);z-index:5}
@media(max-width:960px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.manage-tools{margin-left:auto}.hero-symbol{width:108px;margin-right:0}}@media(max-width:580px){.page{padding:18px 12px}.header{gap:8px}.brand{font-size:17px;gap:8px}.brand-mark{width:38px;height:38px;border-radius:12px;font-size:16px}.header .button{font-size:10px;padding:6px 9px;min-height:32px}.header nav{gap:5px}.hero{padding:27px 6px 23px}.hero h1{font-size:25px}.hero p{font-size:11px;max-width:230px}.eyebrow{font-size:10px}.hero-symbol{width:76px}.library{border-radius:14px}.toolbar{padding:13px 12px;gap:10px}.tabs button{padding:4px 12px;font-size:11px}.search{min-width:100%;max-width:none;margin:0;order:3}.manage-tools{gap:6px}.manage-tools .button{font-size:10px;min-height:32px;padding:5px 8px}.location{padding:13px 13px 9px}.grid{padding:5px 12px 18px;gap:11px;grid-template-columns:minmax(0,1fr)}.video-frame{aspect-ratio:16/9}.card-body{padding:12px 13px}.card h2{font-size:13px}.card-meta{font-size:10px}.file-icon{width:37px;height:43px}.admin-hint{padding:0 13px;font-size:10px}.upload-panel{padding:12px}.upload-panel>div{font-size:11px}.upload-panel .button{font-size:10px;padding:5px 8px}footer{font-size:10px;gap:8px}footer span{display:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
/* Document reading layout: introduction, videos, then downloads. */
.document-content{padding:20px 22px 24px;overflow-wrap:anywhere}.document-kicker{font-size:10px;letter-spacing:2px;color:#8a603e}.document-content h1{margin:8px 0 16px;font-size:27px;line-height:1.45;letter-spacing:.3px}.document-body{white-space:pre-wrap;font-size:15px;line-height:1.95;color:#3d3026;overflow-wrap:anywhere}.drive-manager .document-content{margin:0 20px 20px;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fff9ef}.drive-manager .document-content h1{font-size:21px;margin:6px 0 10px}.drive-manager .document-body{font-size:13px;max-height:210px;overflow:auto}.public-document .page{max-width:980px;padding-top:24px}.public-document .header{margin-bottom:24px}.public-document .hero{display:none}.public-document .library{background:#fffcf7;min-height:450px}.public-document .toolbar{padding:13px 34px;background:#fbf4e9}.public-document .search{max-width:270px}.public-document .location{padding:16px 38px 0}.public-document .document-content{padding:27px 42px 30px}.public-document .document-content h1{font-size:32px;margin:10px 0 22px}.public-document .document-body{font-size:16px;font-weight:600;line-height:2}.public-document .grid{display:flex;flex-direction:column;gap:30px;padding:0 42px 38px}.document-section{width:100%;min-width:0}.section-label{display:flex;align-items:center;gap:12px;margin:0 0 17px;font-size:14px;color:#795b3c;font-weight:700;letter-spacing:1px}.section-label:after{content:'';height:1px;background:var(--line);flex:1}.document-list{display:flex;flex-direction:column;gap:22px}.public-document .card{border-radius:11px;background:#fff9ef}.public-document .card h3{font-size:16px;font-weight:700;margin:0;line-height:1.6;overflow-wrap:anywhere}.public-document .video-heading{padding:15px 18px;border-bottom:1px solid var(--line)}.public-document .video-frame{aspect-ratio:16/9}.public-document .card-meta{margin:0}.public-document .card-body{padding:13px 18px}.public-document .card-bottom{margin-top:9px}.public-document .card[data-kind=file] .card-body{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:7px 18px;align-items:center}.public-document .card[data-kind=file] .file-intro{grid-row:1/3;align-items:center}.public-document .card[data-kind=file] .card-meta{gap:18px}.public-document .card[data-kind=file] .card-bottom{justify-content:flex-end;margin:0}.public-document .card[data-kind=file] .kind-label{display:none}.public-document .empty{padding:18px 20px 45px}#document-dialog{width:min(680px,calc(100vw - 32px));max-height:calc(100dvh - 32px);overflow:auto}textarea{font:inherit;resize:vertical}dialog textarea{width:100%;padding:11px 13px;border:1px solid #d4bda1;border-radius:8px;background:#fff;color:var(--ink);font-size:14px;line-height:1.8;min-height:180px;max-height:45dvh}textarea:focus-visible{outline:3px solid #7ba8e8;outline-offset:3px}.document-edit-hint{font-size:12px;color:var(--muted);margin:12px 0 4px}.drive-manager .manage-tools{flex-wrap:wrap}
@media(max-width:580px){.public-document .page{padding:16px 10px}.public-document .header{margin-bottom:17px}.public-document .toolbar{padding:10px 16px}.public-document .search{min-width:100%;max-width:none}.public-document .location{padding:13px 19px 0}.public-document .document-content{padding:22px 20px 26px}.public-document .document-content h1{font-size:26px;margin:8px 0 17px}.public-document .document-body{font-size:14px;line-height:1.95}.public-document .grid{padding:0 16px 25px;gap:24px}.section-label{font-size:12px;margin-bottom:12px}.document-list{gap:16px}.public-document .video-heading{padding:11px 13px}.public-document .card h3{font-size:14px}.public-document .card-body{padding:11px 13px}.public-document .card[data-kind=file] .card-body{display:block}.public-document .card[data-kind=file] .card-meta{margin-top:9px}.public-document .card[data-kind=file] .card-bottom{margin-top:4px}.drive-manager .document-content{margin:0 12px 15px;padding:15px}.drive-manager .document-content h1{font-size:19px}.drive-manager .manage-tools{width:100%;justify-content:flex-end}#document-dialog{padding:18px}dialog textarea{font-size:13px;min-height:170px}}
/* One editor inside the navigation dashboard. */
.inline-editor{padding:20px 22px 24px;min-width:0}.inline-editor form{min-width:0}.inline-editor label{display:block;font-size:12px;margin:18px 0 7px}.inline-editor input:not([type=file]),.inline-editor textarea{width:100%;padding:11px 13px;border:1px solid #d4bda1;border-radius:8px;background:#fff;color:var(--ink);font:600 14px/1.8 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}.inline-editor textarea{min-height:170px;max-height:420px;resize:vertical}.inline-editor .document-edit-hint{margin-top:10px}.editor-media{margin-top:26px;padding-top:20px;border-top:1px solid var(--line);min-width:0}.editor-media-title{font-size:14px;margin:0 0 14px}.editor-media .toolbar{padding:0 0 14px;border:0;gap:10px}.editor-media .search{margin-left:0;max-width:300px}.editor-media .manage-tools{margin-left:auto}.editor-media .admin-hint{padding:0;margin-bottom:14px}.editor-media .grid{padding:0}.editor-media .upload-panel{margin:0 0 14px;border-radius:8px}.document-save-status{font-size:12px;color:#6c513a;margin:18px 0 0}.inline-editor .dialog-actions{border-top:1px solid var(--line);padding-top:16px;margin-top:13px}.embedded-manager{min-height:0;background:transparent}.embedded-manager .page{max-width:none;padding:0}.embedded-manager .header,.embedded-manager .hero,.embedded-manager footer{display:none}.embedded-manager .library{min-height:0;box-shadow:none}.embedded-manager .location{padding-top:18px}.embedded-manager .toast{position:fixed;top:14px;bottom:auto}.embedded-manager .inline-editor .dialog-top h2{font-size:20px}
@media(max-width:580px){.inline-editor{padding:15px 13px 18px}.inline-editor input:not([type=file]),.inline-editor textarea{font-size:13px}.editor-media{margin-top:20px;padding-top:16px}.editor-media .toolbar{padding:0 0 12px}.editor-media .manage-tools{order:0;justify-content:flex-start}.editor-media .search{order:1;max-width:none;min-width:100%}.embedded-manager .library{border-radius:12px}.embedded-manager .inline-editor .dialog-top h2{font-size:18px}}
.inline-editor .search{display:flex;margin:0}.inline-editor .search input{padding:0;border:0;border-radius:0;background:transparent;font-size:12px;line-height:inherit}
/* Independent tutorial buttons, shared by the reader and inline manager. */
.tutorials{padding:20px 22px;border-bottom:1px solid var(--line);background:#f8eedf}.tutorial-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.tutorial-top h2{margin:0;font-size:14px;color:#5c422d}.tutorial-top .button{background:#875d3d;border-color:#875d3d}.tutorial-top .button:hover{background:#6e482e}#tutorial-nav{display:flex;flex-wrap:wrap;gap:9px}.tutorial-button{border:1px solid #d6bfa1;background:#fffaf2;border-radius:10px;padding:9px 15px;max-width:100%;text-align:left;overflow-wrap:anywhere;font:700 13px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}.tutorial-button:hover{background:#efe0ca}.tutorial-button.active{background:#785237;border-color:#785237;color:#fffaf3;box-shadow:0 3px 9px #7852371a}.tutorial-button.is-hidden{border-style:dashed}.tutorial-tools{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:14px}.tutorial-tools>span{font-size:11px;color:#70563f;margin-right:auto}.tutorial-tools .button{min-height:30px;padding:4px 9px;font-size:11px}#delete-tutorial{color:#a1392d}.public-document .tutorials{padding:20px 34px}.public-document .location>.crumb{min-width:0}
@media(max-width:580px){.tutorials,.public-document .tutorials{padding:14px 13px}.tutorial-top{margin-bottom:10px}.tutorial-top h2{font-size:13px}.tutorial-top .button{font-size:11px;min-height:32px;padding:5px 10px}#tutorial-nav{gap:7px}.tutorial-button{padding:8px 11px;font-size:12px;border-radius:8px}.tutorial-tools>span{width:100%}}