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.reader-layout{grid-template-columns:280px minmax(0,1fr);gap:0;margin-top:24px}.service-ui .ux-reader .reader-layout:not(:has(.book-navigation)){grid-template-columns:minmax(0,1fr)}.service-ui .ux-reader .book-navigation{border:1px solid var(--line);background:#f7f9fc;border-radius:12px;top:88px}.service-ui .ux-reader .book-contents{max-height:calc(100dvh - 104px);padding:20px 12px}.service-ui .ux-reader .book-contents-tools{background:#f7f9fc;margin-top:-20px;padding-top:20px;top:-20px}.service-ui .ux-reader .book-search input,.service-ui .directory-search input{border:1px solid var(--border-strong);color:var(--ink);background:#fff;border-radius:8px;min-height:48px;font-size:16px}.service-ui .ux-reader .contents-chapter-toggle{color:var(--ink)}.service-ui .ux-reader .contents-chapter-number,.service-ui .ux-reader .contents-count{color:var(--text-muted);font-size:12px}.service-ui .ux-reader .contents-lesson{color:var(--text-2);border-radius:6px;font-size:14px}.service-ui .ux-reader .contents-lesson:hover{background:var(--surface-3)}.service-ui .ux-reader .contents-lesson.is-current{color:#1945a5;box-shadow:inset 3px 0 var(--accent);background:#e6eeff;font-weight:650}.service-ui .ux-reader .reader-content{padding:8px 0 32px 40px}.service-ui .ux-reader .reader-directory-page{max-width:none}.service-ui .ux-reader .reader-content h1{margin-top:10px;font-size:clamp(27px,3vw,35px);line-height:1.45}.service-ui .ux-reader .reader-content .goal{color:var(--text-2)}.service-ui .ux-reader .reader-content .lesson-insight{background:var(--accent-soft);border-left:3px solid var(--accent);border-radius:0 10px 10px 0;padding:18px 20px}.service-ui .ux-reader .reader-content .lesson-insight .label{color:#254e9b;font-weight:650}.service-ui .ux-reader .guide-overview{border:1px solid var(--line);background:var(--bg-2);border-radius:10px;padding:14px 18px}.service-ui .guide-overview>summary>span{color:var(--text-muted)}.service-ui .guide-step-number,.service-ui 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