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p{color:var(--edu-ink2);font-size:14px;line-height:1.45}.edu-arrow{color:#c4cdd6;flex:none;place-items:center;display:grid}.edu-flagship .edu-callout.key{background:var(--edu-sage50);border-radius:16px;margin-top:32px;padding:22px 24px}.edu-flagship .edu-callout.key .ic{width:34px;height:34px;color:var(--edu-sage);background:#fff;border-radius:9px}.edu-flagship .edu-callout.key h3{color:var(--edu-sage7);margin-bottom:4px;font-family:Cabinet Grotesk,Switzer,sans-serif;font-size:17px;font-weight:600}.edu-flagship .edu-callout.key p{color:var(--edu-ink2);font-size:15px;line-height:1.55}@media (width<=860px){.edu-layout{grid-template-columns:1fr;gap:28px}.edu-sidecar{flex-flow:wrap;order:1;gap:12px;position:static}.edu-sidecar .edu-toc{display:none}.edu-metacard{flex:auto}.edu-toc-mobile{z-index:6;background:var(--edu-paper);margin:0 0 22px;padding-top:4px;display:block;position:sticky;top:0}.edu-compare{grid-template-columns:1fr}.edu-divider{height:44px}.edu-divider:before{width:auto;height:1px;inset:50% 8px auto;transform:none}.edu-divider span{top:50%}.edu-flow{flex-direction:column}.edu-arrow{transform:rotate(90deg)}}@media (width<=560px){.edu-content,.edu-flagship{padding:24px 20px}.edu-content h1{font-size:26px}.edu-flagship h1{font-size:28px}}@media (width<=600px){.edu-content p,.edu-content .lead,.edu-content .b-prose{font-size:15px;line-height:1.55}.edu-content .lead{margin-top:18px}.edu-content .b-prose{margin-top:12px}.edu-content .shead{margin:28px 0 12px}.edu-content .shead h2,.edu-content h2{font-size:18px}.edu-content .callout,.edu-content .short{margin-top:16px;padding:14px 16px}.edu-content .vcard{padding:13px 15px}.edu-content .vocab{gap:12px}.edu-content .check,.edu-content .wtm{margin-top:22px;padding:16px 18px}.edu-content .cmp-panel{padding:13px 15px}.edu-content .summary{margin-top:28px;padding:18px 20px}.edu-content .keybox{margin-top:26px;padding:20px 22px}.edu-content .kc-item{gap:14px;padding:14px 0}.edu-content figure{margin-top:4px}.edu-foot{margin-top:26px}}.draft-preview-wrap{z-index:200;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:fade var(--d-base) var(--ease-out);background:#10203073;justify-content:center;align-items:flex-start;display:flex;position:fixed;inset:0}.draft-preview{background:var(--surface);width:min(1040px,100%);height:100%;box-shadow:var(--shadow-lg);animation:sheetin var(--d-surface) var(--ease-out);flex-direction:column;display:flex}.draft-preview-bar{border-bottom:1px solid var(--border);background:var(--surface);z-index:1;flex:none;justify-content:space-between;align-items:center;gap:16px;padding:12px 20px;display:flex;position:sticky;top:0}.draft-preview-body{overscroll-behavior:contain;flex:auto;overflow-y:auto}.edu-img{margin:24px 0}.edu-img img{border:1px solid var(--border);border-radius:14px;width:100%;height:auto;display:block}.edu-img figcaption,.edu-video figcaption{color:var(--text-soft,#6b7885);text-align:center;margin-top:8px;font-size:13px}.edu-video{margin:24px 0}.edu-video-frame{aspect-ratio:16/9;border:1px solid var(--border);background:#000;border-radius:14px;width:100%;position:relative;overflow:hidden}.edu-video-frame iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.edu-ref-meta{color:var(--text-soft,#6b7885)}.edu-file{border:1px solid var(--edu-line);background:#fff;border-radius:14px;align-items:center;gap:16px;margin:24px 0;padding:16px 18px;display:flex;box-shadow:0 1px 2px #1020300a}.edu-file-icon{background:var(--edu-teal50);width:46px;height:46px;color:var(--edu-teal7);border-radius:11px;flex:none;justify-content:center;align-items:center;display:flex}.edu-file-body{flex:auto;min-width:0}.edu-file-title{color:var(--edu-ink);font-size:15px;font-weight:600;line-height:1.35}.edu-file-desc{color:var(--edu-ink2);margin-top:3px;font-size:14px;line-height:1.5}.edu-file-meta{letter-spacing:.02em;text-transform:uppercase;color:var(--edu-muted);margin-top:5px;font-size:12px;font-weight:500}.edu-file-btn{flex:none;justify-content:center;min-width:150px}@media (width<=560px){.edu-file{flex-wrap:wrap;gap:12px}.edu-file-body{flex-basis:calc(100% - 62px)}.edu-file-btn{flex-basis:100%;width:100%}}.be-file-chip{background:var(--surface-hover,#f7f9fb);border:1px solid var(--border);color:var(--text,#16293b);border-radius:10px;align-items:center;gap:8px;min-width:0;padding:9px 12px;font-size:13px;display:flex}.be-file-chip svg{color:var(--text-soft,#6b7885);flex:none}.be-file-name{text-overflow:ellipsis;white-space:nowrap;font-weight:500;overflow:hidden}.be-file-size{color:var(--text-soft,#6b7885);flex:none}.block-editor-wrap{z-index:210;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);animation:fade var(--d-base) var(--ease-out);background:#10203080;justify-content:center;align-items:flex-start;display:flex;position:fixed;inset:0}.block-editor{background:var(--surface-inset,#eef2f6);width:min(920px,100%);height:100%;box-shadow:var(--shadow-lg);animation:sheetin var(--d-surface) var(--ease-out);flex-direction:column;display:flex}.block-editor-bar{border-bottom:1px solid var(--border);background:var(--surface);flex:none;justify-content:space-between;align-items:center;gap:16px;padding:12px 18px;display:flex}.block-editor-body{overscroll-behavior:contain;flex:auto;overflow-y:auto}.be-list{flex-direction:column;gap:12px;max-width:760px;margin:0 auto;padding:20px 20px 80px;display:flex}.be-note{color:#5b4708;background:#eab3081a;border:1px solid #eab30847;border-radius:10px;padding:10px 12px;font-size:13px;line-height:1.5}.be-empty{text-align:center;color:var(--text-soft,#6b7885);padding:28px 0;font-size:14px}.be-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden}.be-card-h{background:var(--surface-hover,#f7f9fb);border-bottom:1px solid var(--border-subtle,#eff2f6);justify-content:space-between;align-items:center;gap:8px;padding:8px 10px 8px 14px;display:flex}.be-type{letter-spacing:.02em;text-transform:uppercase;color:var(--text-soft,#6b7885);font-size:12px;font-weight:700}.be-card-b{padding:12px 14px}.be-row{border:1px solid var(--border-subtle,#eff2f6);background:var(--surface-hover,#f7f9fb);border-radius:10px;align-items:flex-start;gap:8px;padding:10px;display:flex}.be-add{color:var(--text-soft,#6b7885);align-items:center;gap:8px;padding:4px 2px;display:flex}.be-add .select{max-width:280px}.be-mini{color:var(--accent,#0d7a87);border:1px dashed var(--border-strong,#d6dee7);cursor:pointer;background:0 0;border-radius:8px;align-self:flex-start;align-items:center;gap:5px;padding:6px 10px;font-size:13px;font-weight:600;display:inline-flex}.be-mini:hover{background:var(--surface-hover,#f7f9fb)}.be-preserved{color:var(--text-soft,#6b7885);font-size:13px;font-style:italic}.be-img-preview{border:1px solid var(--border);object-fit:contain;background:var(--surface-hover,#f7f9fb);border-radius:10px;max-width:100%;max-height:220px}.be-img-empty{border:1px dashed var(--border-strong,#d6dee7);height:90px;color:var(--text-soft,#6b7885);border-radius:10px;justify-content:center;align-items:center;font-size:13px;display:flex}.icon-btn.sm{width:30px;height:30px}.icon-btn.danger:hover{color:var(--danger,#c0392b)}