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8px;display:flex}a.ss-lesson:hover{background:var(--bg);text-decoration:none}.ss-lesson.locked{opacity:.55}.ss-lesson-ico{border-radius:50%;flex:none;place-items:center;width:28px;height:28px;display:grid}.ss-lesson-ico.passed{background:var(--ok-soft);color:var(--ok)}.ss-lesson-ico.learning{background:var(--indigo);color:#fff}.ss-lesson-ico.locked{color:var(--muted-2);background:#eef1f6}.ss-lesson-text{flex-direction:column;flex:0 auto;min-width:0;display:flex}.ss-side-item .ss-lesson-text{flex:1}.ss-lesson-text b{color:var(--navy);font-size:14.5px}.ss-lesson-text small{color:var(--muted);font-size:12.5px}.ss-lesson-st{white-space:nowrap;font-size:12.5px;font-weight:700}.ss-lesson-st.passed{color:var(--ok)}.ss-lesson-st.learning{color:var(--indigo)}.ss-lesson-st.locked{color:var(--muted-2)}.ss-td-title{color:var(--text);font-weight:600}.ss-levelup h3{gap:8px}.ss-opt{background:#fff;border:1px solid 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b{color:var(--navy)}.ss-file-text small{color:var(--muted)}.ss-confirm{background:var(--indigo-soft);border-radius:12px;padding:12px 14px}.ss-side{flex-direction:column;gap:12px;display:flex;position:sticky;top:76px}.ss-side h3{align-items:flex-start;gap:8px}.ss-side-list{flex-direction:column;gap:4px;padding:0;list-style:none;display:flex}.ss-side-item{color:var(--text);border-radius:12px;align-items:flex-start;gap:10px;padding:8px;display:flex}a.ss-side-item:hover{background:var(--bg);text-decoration:none}.ss-side-item.is-on{background:var(--indigo-soft)}.ss-side-item.locked{opacity:.6}.ss-side-note{background:var(--indigo-soft);border-radius:12px;padding:12px;font-size:14px}.ss-side .btn{align-self:flex-start}.ss-test{flex-direction:column;gap:14px;display:flex}.ss-time-low{color:var(--bad);font-weight:700}.ss-qnav{flex-wrap:wrap;gap:8px;display:flex}.ss-qnav button{border:1.5px solid var(--line-2);width:40px;height:40px;color:var(--muted);cursor:pointer;background:#fff;border-radius:10px;font-weight:700}.ss-qnav button.answered{background:var(--indigo-soft);color:var(--indigo);border-color:#c9d1fa}.ss-qnav button.is-on{background:var(--indigo);color:#fff;border-color:var(--indigo)}.ss-q{font-size:16px}.ss-options{flex-direction:column;gap:10px;display:flex}.ss-option{text-align:left;border:1.5px solid var(--line-2);cursor:pointer;background:#fff;border-radius:14px;align-items:center;gap:14px;padding:12px 14px;font-size:15.5px;display:flex}.ss-option:hover{border-color:var(--indigo)}.ss-option.is-on{border-color:var(--navy);background:var(--indigo-soft)}.ss-letter{background:var(--indigo-soft);width:28px;height:28px;color:var(--indigo);border-radius:50%;flex:none;place-items:center;font-size:13px;font-weight:800;display:grid}.ss-option.is-on .ss-letter{background:var(--navy);color:#fff}.ss-result{border-radius:14px;align-items:center;gap:16px;padding:16px 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minmax(0,1fr);align-items:start;gap:2px 12px;padding:10px 4px;display:grid}.ss-lesson-st{grid-column:2}.ss-topic>summary{padding:14px}.ss-topic .badge{display:none}.ss-result-pct{font-size:28px}}.ss-pdf{border:1px solid var(--line);background:#f3f5fb;border-radius:14px;width:100%;height:520px}.ss-test-intro{flex-direction:column;align-items:flex-start;gap:12px;display:flex}.ss-test-intro ul{flex-direction:column;gap:4px;padding-left:18px;display:flex}.ss-tf{flex-direction:column;gap:10px;display:flex}.ss-tf-row{border:2px solid var(--line);background:#fff;border-radius:14px;align-items:center;gap:12px;padding:10px 14px;display:flex}.ss-tf-text{flex:1;min-width:0}.ss-tf-btns{border:1.5px solid var(--line-2);border-radius:999px;flex:none;display:inline-flex;overflow:hidden}.ss-tf-btns button{cursor:pointer;color:var(--muted);background:#fff;border:0;padding:7px 14px;font-size:13.5px;font-weight:700}.ss-tf-btns button+button{border-left:1.5px solid var(--line-2)}.ss-tf-btns 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