:root{color-scheme:light;--canvas: #f3f0ea;--canvas-deep: #e8e3dc;--surface: rgba(255, 254, 251, .82);--surface-solid: #fffefa;--surface-raised: #ffffff;--ink: #1d1d22;--ink-2: #57565e;--ink-3: #7b7880;--line: #d9d4cc;--line-strong: #bbb4aa;--iris: #665783;--iris-hover: #56476f;--iris-soft: #e8e2ef;--glass: #477a75;--glass-hover: #386863;--glass-soft: #dceae7;--clay: #b56d57;--clay-soft: #f2e1db;--success: #2e6755;--success-soft: #e1eee8;--warning: #8b632c;--warning-soft: #f5ead6;--danger: #93443e;--danger-soft: #f5dfdd;--info: #4d617f;--info-soft: #e1e7ef;--focus: #8872aa;--prism: linear-gradient(115deg, #8878a3 0%, #668d88 52%, #bd7b63 100%);--font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", sans-serif;--mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--radius-xs: 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24%,var(--line))}.alert-warn{color:var(--warning);background:var(--warning-soft);border-color:color-mix(in srgb,var(--warning) 24%,var(--line))}.alert-danger{color:var(--danger);background:var(--danger-soft);border-color:color-mix(in srgb,var(--danger) 24%,var(--line))}.alert strong,.alert small{display:block}.alert small{margin-top:3px;color:var(--ink-2)}.empty,.empty-state{display:grid;place-items:center;min-height:220px;padding:30px;color:var(--ink-3);text-align:center}.empty-state h2{margin:8px 0 4px;color:var(--ink)}.empty-state p{max-width:390px;margin:0 0 14px;color:var(--ink-3);font-size:11px;line-height:1.6}.empty .e-ico{margin-bottom:12px;font-size:36px}.compact-empty{min-height:88px;padding:20px;font-size:11px}.skeleton{width:58%;height:12px;overflow:hidden;border-radius:var(--radius-full);background:var(--canvas-deep)}.skeleton.wide{width:82%}.skeleton.title{width:66%;height:26px;margin:34px 0 14px}.skeleton:after{content:"";display:block;width:42%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.68),transparent);animation:shimmer 1.4s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(340%)}}.progress{height:5px;overflow:hidden;border-radius:var(--radius-full);background:var(--canvas-deep)}.progress>i{display:block;height:100%;border-radius:inherit;background:var(--prism);transition:width .4s var(--ease-out)}.progress-shine>i{background:linear-gradient(90deg,var(--prism),color-mix(in srgb,var(--prism) 55%,#fff))}.row-index.row-warn{color:var(--danger);font-weight:700}.home-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:18px;margin-top:34px}.home-grid>.card,.module-grid>.card,.activity>.card,.report-grid>.card,.book-grid>.card,.bank-grid>.card{margin-top:0}.continue-card{min-height:354px;display:flex;flex-direction:column;padding:30px;overflow:hidden;background:radial-gradient(340px 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5px;color:var(--iris);background:transparent;border:0;border-radius:9px;cursor:pointer;font-size:10px;font-weight:680}.reader-enter:hover{background:var(--iris-soft)}.reader-empty{min-height:360px;display:grid;grid-template-columns:minmax(230px,.7fr) 1fr;align-items:center;gap:48px;padding:42px}.reader-empty>div:last-child{max-width:520px}.reader-empty h2{margin-bottom:12px;font-size:30px;letter-spacing:-.04em}.reader-empty p{margin-bottom:22px;color:var(--ink-2);font-size:12px;line-height:1.75}.reader-empty-art{height:230px;display:flex;align-items:flex-end;justify-content:center;gap:10px;padding:28px;background:var(--canvas-deep);border-radius:50% 50% 18px 18px}.reader-empty-art span{width:25%;border-radius:5px 11px 4px 4px;box-shadow:-4px 5px 14px #1c191d21}.reader-empty-art span:nth-child(1){height:66%;background:var(--iris);transform:rotate(-5deg)}.reader-empty-art span:nth-child(2){height:82%;background:var(--glass)}.reader-empty-art span:nth-child(3){height:56%;background:var(--clay);transform:rotate(5deg)}.reader-import-modal{width:min(720px,100%)}.reader-import-modal .modal-head{align-items:flex-start}.reader-import-modal .eyebrow{margin-bottom:4px}.reader-dropzone{width:100%;min-height:128px;display:grid;place-items:center;align-content:center;gap:6px;margin-bottom:18px;padding:18px;color:var(--ink-2);background:color-mix(in srgb,var(--iris-soft) 34%,var(--surface-solid));border:1px dashed color-mix(in srgb,var(--iris) 42%,var(--line));border-radius:var(--radius-lg);cursor:pointer}.reader-dropzone:hover,.reader-dropzone.dragging{color:var(--iris);background:var(--iris-soft);border-color:var(--iris)}.reader-dropzone>span{width:38px;height:38px;display:grid;place-items:center;color:var(--iris);background:var(--surface-solid);border-radius:13px}.reader-dropzone strong{font-size:11px}.reader-dropzone small{color:var(--ink-3);font:8px var(--mono);letter-spacing:.06em}.reader-import-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.reader-import-grid+.field,.reader-import-modal .field+.field{margin-top:14px}.reader-import-modal .label{display:flex;justify-content:space-between;gap:10px}.reader-import-modal .label small{color:var(--ink-3);font-weight:500}.reader-import-content{min-height:150px;resize:vertical;line-height:1.6}.empty-symbol{width:54px;height:54px;display:grid;place-items:center;color:var(--iris);background:var(--iris-soft);border-radius:19px 19px 19px 6px;font-size:20px}.reader-main{width:100%;height:100dvh;min-height:0;margin-left:0}.reader-page{width:100%;height:100dvh;min-height:0;max-width:none;overflow:hidden;padding:0}.reader-page>*{animation:none}.ebook-reader{--reader-topbar: calc(64px + env(safe-area-inset-top)) ;--reader-bg: #efebe4;--reader-paper: #fffdf8;--reader-ink: #29272a;--reader-muted: #787279;--reader-line: #d8d0c5;--reader-accent: #665783;--reader-code-bg: #28262c;--reader-code-ink: #f2eee7;position:relative;width:100%;height:100dvh;display:grid;grid-template-rows:var(--reader-topbar) minmax(0,1fr);color:var(--reader-ink);background:var(--reader-bg)}.ebook-reader[data-reader-theme=sepia]{--reader-bg: #d9c9ab;--reader-paper: #eee1c8;--reader-ink: #382d23;--reader-muted: #776755;--reader-line: #c7b38e;--reader-accent: #5f4d70;--reader-code-bg: #463a30;--reader-code-ink: #f4ead8}.ebook-reader[data-reader-theme=night]{--reader-bg: #111216;--reader-paper: #1b1d22;--reader-ink: #dedbd4;--reader-muted: #9b9791;--reader-line: #3c3e45;--reader-accent: #baa5d2;--reader-code-bg: #0d0e11;--reader-code-ink: #e7e3dc}.reader-topbar{position:relative;z-index:85;min-width:0;display:flex;align-items:center;gap:10px;padding:env(safe-area-inset-top) 18px 0;color:var(--reader-ink);background:color-mix(in srgb,var(--reader-paper) 90%,transparent);border-bottom:1px solid var(--reader-line);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.reader-topbar .icon-btn{color:var(--reader-muted);background:transparent;border-color:transparent}.reader-topbar .icon-btn:hover{color:var(--reader-ink);background:color-mix(in srgb,var(--reader-ink) 6%,transparent)}.reader-back{margin-right:2px}.reader-titlebar{min-width:0;flex:1}.reader-titlebar strong,.reader-titlebar span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-titlebar strong{font-size:11px}.reader-titlebar span{margin-top:2px;color:var(--reader-muted);font-size:9px}.reader-top-progress{position:absolute;inset:auto 0 -1px;height:2px;background:transparent}.reader-top-progress i{display:block;height:100%;background:var(--reader-accent);transition:width .2s linear}.reader-save-state{min-width:70px;display:inline-flex;align-items:center;justify-content:flex-end;gap:5px;color:var(--reader-muted);font-size:9px}.reader-save-state.error{color:var(--danger)}.reader-settings-wrap{position:relative}.reader-settings{position:absolute;z-index:100;top:52px;right:0;width:300px;padding:18px;color:var(--reader-ink);background:var(--reader-paper);border:1px solid var(--reader-line);border-radius:18px 18px 18px 6px;box-shadow:0 24px 70px #14121433}.reader-setting-row,.reader-setting-block>span{display:flex;align-items:center;justify-content:space-between;gap:12px}.reader-setting-row>span strong,.reader-setting-row>span small,.reader-setting-block>span strong,.reader-setting-block>span small{display:block}.reader-setting-row strong,.reader-setting-block strong{font-size:10px}.reader-setting-row small,.reader-setting-block small{margin-top:2px;color:var(--reader-muted);font-size:8px}.reader-stepper{display:flex;overflow:hidden;border:1px solid var(--reader-line);border-radius:11px}.reader-stepper button{width:44px;height:44px;display:grid;place-items:center;color:var(--reader-ink);background:transparent;border:0;cursor:pointer}.reader-stepper button+button{border-left:1px solid var(--reader-line)}.reader-stepper button:hover:not(:disabled){background:color-mix(in srgb,var(--reader-ink) 6%,transparent)}.reader-stepper button:disabled{opacity:.35;cursor:not-allowed}.reader-setting-block{display:block;margin-top:18px;padding-top:16px;border-top:1px solid var(--reader-line)}.reader-setting-block input[type=range]{width:100%;margin-top:12px;accent-color:var(--reader-accent)}.reader-theme-options{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:12px}.reader-theme-options button{min-height:54px;display:grid;place-items:center;gap:3px;padding:6px;color:var(--reader-muted);background:transparent;border:1px solid var(--reader-line);border-radius:11px;cursor:pointer;font-size:8px}.reader-theme-options button.active{color:var(--reader-accent);border-color:var(--reader-accent);box-shadow:inset 0 0 0 1px var(--reader-accent)}.reader-theme-options i{width:22px;height:16px;border:1px solid rgba(0,0,0,.12);border-radius:5px 5px 5px 2px}.reader-theme-options .paper{background:#fffdf8}.reader-theme-options .sepia{background:#eee1c8}.reader-theme-options .night{background:#1b1d22}.reader-loading{grid-row:2;display:grid;place-items:center;align-content:center;gap:7px;color:var(--reader-muted)}.reader-loading>span{width:54px;height:54px;display:grid;place-items:center;margin-bottom:8px;color:var(--reader-accent);background:var(--reader-paper);border:1px solid var(--reader-line);border-radius:19px 19px 19px 6px;font-size:20px}.reader-loading strong{color:var(--reader-ink);font-size:13px}.reader-loading small{font-size:10px}.reader-error .btn{margin-top:12px}.reader-toc-scrim{position:fixed;z-index:74;inset:var(--reader-topbar) 0 0;background:#11101242;border:0;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);cursor:default}.reader-toc{position:fixed;z-index:80;inset:var(--reader-topbar) auto 0 0;width:min(350px,92vw);display:flex;flex-direction:column;color:var(--reader-ink);background:var(--reader-paper);border-right:1px solid var(--reader-line);box-shadow:24px 0 70px #16121724;transform:translate(-105%);transition:transform .26s var(--ease-out)}.reader-toc.open{transform:none}.reader-toc-head{min-height:118px;display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:23px 18px 18px 24px;border-bottom:1px solid var(--reader-line)}.reader-toc-head>div{min-width:0}.reader-toc-head span,.reader-toc-head strong,.reader-toc-head small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-toc-head span{margin-bottom:10px;color:var(--reader-accent);font:8px var(--mono);letter-spacing:.13em}.reader-toc-head strong{font-size:14px}.reader-toc-head small{margin-top:5px;color:var(--reader-muted);font-size:9px}.reader-toc-head .icon-btn{width:44px;min-width:44px;min-height:44px;color:var(--reader-muted);background:transparent;border-color:transparent}.reader-toc nav{flex:1;overflow-y:auto;padding:8px}.reader-toc nav button{width:100%;min-height:58px;display:grid;grid-template-columns:30px minmax(0,1fr) auto;align-items:center;gap:10px;padding:8px 11px;color:var(--reader-muted);background:transparent;border:1px solid transparent;border-radius:12px;cursor:pointer;text-align:left}.reader-toc nav button:hover{background:color-mix(in srgb,var(--reader-ink) 5%,transparent)}.reader-toc nav button.active{color:var(--reader-ink);background:color-mix(in srgb,var(--reader-accent) 10%,transparent);border-color:color-mix(in srgb,var(--reader-accent) 28%,var(--reader-line))}.reader-toc nav button>span{font:8px var(--mono)}.reader-toc nav button strong{overflow:hidden;font-size:10px;text-overflow:ellipsis;white-space:nowrap}.reader-toc nav button small{font-size:8px;white-space:nowrap}.reader-scroller{grid-row:2;min-height:0;overflow-y:auto;overscroll-behavior-y:contain;scroll-behavior:smooth}.reader-paper{width:min(820px,calc(100% - 36px));min-height:calc(100dvh - 98px);margin:34px auto 80px;padding:clamp(44px,8vw,88px) clamp(32px,8vw,92px) 56px;color:var(--reader-ink);background:var(--reader-paper);border:1px solid var(--reader-line);border-radius:3px 18px 18px 3px;box-shadow:0 22px 65px #241e2317,inset 5px 0 color-mix(in srgb,var(--reader-line) 62%,transparent)}.reader-chapter-head{margin-bottom:52px;text-align:center}.reader-chapter-head>span{color:var(--reader-accent);font:8px var(--mono);letter-spacing:.14em}.reader-chapter-head h1{margin:20px 0 12px;color:var(--reader-ink);font-family:ui-serif,Songti SC,STSong,Georgia,serif;font-size:clamp(30px,5vw,48px);font-weight:590;line-height:1.25;letter-spacing:-.04em}.reader-chapter-head p{color:var(--reader-muted);font-size:10px}.reader-text,.reader-markdown .mark-body{color:var(--reader-ink);font-family:ui-serif,Songti SC,STSong,Georgia,serif;font-size:var(--reader-font-size);line-height:var(--reader-line-height);letter-spacing:.018em}.reader-text{min-height:36vh;white-space:pre-wrap;word-break:break-word}.reader-markdown .mark-body h1,.reader-markdown .mark-body h2,.reader-markdown .mark-body h3,.reader-markdown .mark-body h4{color:var(--reader-ink);font-family:inherit}.reader-markdown .mark-body h2{border-color:var(--reader-line)}.reader-markdown .mark-body blockquote{color:var(--reader-muted);background:color-mix(in srgb,var(--reader-accent) 8%,transparent);border-left-color:var(--reader-accent)}.reader-markdown .mark-body code{color:var(--reader-ink);background:color-mix(in srgb,var(--reader-accent) 13%,transparent)}.reader-markdown .mark-body pre{color:var(--reader-code-ink);background:var(--reader-code-bg)}.reader-markdown .mark-body pre code{color:inherit;background:none}.reader-chapter-loading{min-height:42vh;display:flex;align-items:center;justify-content:center;gap:8px;color:var(--reader-muted);font-size:10px}.reader-chapter-nav{display:grid;grid-template-columns:1fr 44px 1fr;align-items:center;gap:14px;margin-top:72px;padding-top:30px;border-top:1px solid var(--reader-line)}.reader-chapter-link{min-width:0;min-height:62px;display:flex;align-items:center;gap:9px;padding:8px 10px;color:var(--reader-ink);background:transparent;border:0;border-radius:12px;cursor:pointer;text-align:left}.reader-chapter-link.next{justify-content:flex-end;text-align:right}.reader-chapter-link:hover:not(:disabled){background:color-mix(in srgb,var(--reader-ink) 5%,transparent)}.reader-chapter-link:disabled{opacity:.36;cursor:not-allowed}.reader-chapter-link span{min-width:0}.reader-chapter-link small,.reader-chapter-link strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-chapter-link small{margin-bottom:4px;color:var(--reader-muted);font-size:8px}.reader-chapter-link strong{font-size:10px}.reader-end-mark{width:38px;height:38px;display:grid;place-items:center;justify-self:center;color:var(--reader-accent);border:1px solid var(--reader-line);border-radius:50%}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90;display:none;place-items:start center;padding:11vh 20px 20px;background:#1413176b;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.overlay.open{display:grid}.command{width:min(670px,100%);overflow:hidden;background:var(--surface-solid);border:1px solid color-mix(in srgb,var(--line) 75%,transparent);border-radius:24px 24px 24px 8px;box-shadow:0 36px 100px #12101447}.command-input{min-height:64px;display:flex;align-items:center;gap:12px;padding:0 20px;border-bottom:1px solid var(--line)}.command-input input{flex:1;min-width:0;color:var(--ink);background:transparent;border:0;outline:0;font-size:15px}.command-results{padding:8px}.command-result{width:100%;min-height:58px;display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:12px;padding:8px 12px;color:var(--ink);background:transparent;border:0;border-radius:13px;cursor:pointer;text-align:left}.command-result:hover{background:var(--canvas)}.command-result strong,.command-result small{display:block}.command-result strong{font-size:11px}.command-result small{margin-top:3px;color:var(--ink-3);font-size:9px}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;padding:20px;background:#1413176b;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.modal{width:min(520px,100%);max-height:88vh;overflow:auto;background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--radius-xl);box-shadow:var(--shadow-2)}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:22px 22px 0}.modal-head h3{margin:0;font-size:18px}.modal-body{padding:20px 22px 24px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}.scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:95;display:none;background:#14131759;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.scrim.open{display:block}.drawer{position:fixed;z-index:100;inset:0 0 0 auto;width:min(470px,100%);display:flex;flex-direction:column;padding:26px;background:var(--surface-solid);border-left:1px solid var(--line);box-shadow:-30px 0 90px #1412162e;transform:translate(105%);transition:transform .28s var(--ease-out)}.drawer.open{transform:none}.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:22px;border-bottom:1px solid var(--line)}.drawer-head h2{margin:0}.drawer-form{display:grid;gap:16px;overflow-y:auto;padding:24px 2px}.drawer-form .field+.field{margin-top:0}.drawer-actions{display:flex;gap:10px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}.drawer-actions .btn{flex:1}.toast-wrap{position:fixed;z-index:140;right:22px;bottom:22px;display:grid;gap:8px;pointer-events:none}.toast{min-width:250px;max-width:380px;display:flex;align-items:center;gap:10px;padding:12px 14px;color:var(--ink-2);background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-2);font-size:11px;animation:toast-in .24s var(--ease-out) both}.toast-icon{width:30px;height:30px;display:grid;place-items:center;flex:0 0 30px;border-radius:9px;background:var(--canvas-deep)}.toast-ok .toast-icon{color:var(--success);background:var(--success-soft)}.toast-err .toast-icon{color:var(--danger);background:var(--danger-soft)}.toast-info .toast-icon{color:var(--info);background:var(--info-soft)}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}}.side-sky,.side-violet,.side-mint,.side-teal{overflow:hidden}.side-sky:before,.side-violet:before,.side-mint:before,.side-teal:before{content:"";position:absolute;inset:0 auto 0 0;width:4px}.side-sky:before{background:var(--clay)}.side-violet:before,.side-mint:before{background:var(--iris)}.side-teal:before{background:var(--glass)}.login-card{border-radius:var(--radius-xl);box-shadow:var(--shadow-2)}.login-card .brand-logo{background:var(--ink)}.search-box{min-height:46px;display:flex;align-items:center;gap:10px;padding:0 14px;background:color-mix(in srgb,var(--surface-solid) 86%,transparent);border:1px solid var(--line);border-radius:var(--radius-md);transition:border-color var(--dur-fast),box-shadow var(--dur-fast)}.search-box:focus-within{border-color:var(--iris);box-shadow:var(--shadow-focus)}.search-box input{flex:1;min-width:0;padding:0;color:var(--ink);background:transparent;border:0;outline:0;font-size:12px}.search-box input::placeholder{color:var(--ink-3)}.search-drop{color:var(--ink);background:var(--surface-solid)!important;border-color:var(--line)!important;box-shadow:var(--shadow-2)!important}.s-item{display:block;padding:11px 14px;color:inherit;border-bottom:1px solid var(--line)}.s-item:hover{background:var(--canvas)}.search-box mark,.s-mark{padding:0 2px;color:var(--iris);background:var(--iris-soft);border-radius:3px}@media (max-width: 1120px){.module-grid,.book-grid,.bank-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reader-book-grid{grid-template-columns:1fr}.admin-shell{grid-template-columns:300px minmax(0,1fr)}.editor-form{grid-template-columns:1fr}.editor-preview{display:none}.editor-switch{display:flex}.editor-pane.preview-mode .editor-code{display:none}.editor-pane.preview-mode 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