/* ===== 经典应用题图解讲解 ===== */
#cmApp .cm-hero { text-align: center; padding: 12px 10px 0; }
#cmApp .cm-hero h1 { font-size: 30px; font-weight: 800; color: var(--c-text); margin-bottom: 10px; }
#cmApp .cm-hero p { font-size: 15px; color: var(--c-text-sub); line-height: 1.7; }

#cmApp .cm-bar { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin: 18px 0; }
#cmApp .cm-tab {
    border: 2px solid var(--c-primary); background: transparent; color: var(--c-primary);
    border-radius: 999px; padding: 8px 16px; font-size: 14px; font-weight: 700;
    cursor: pointer; transition: background .15s, color .15s;
}
#cmApp .cm-tab.is-on { background: var(--c-primary); color: #fff; }
#cmApp .cm-tab.gray { border-color: var(--c-border); color: var(--c-text-sub); }
#cmApp .cm-tab.gray.is-on { background: var(--c-text-sub); color: #fff; border-color: var(--c-text-sub); }

#cmApp .cm-panel {
    max-width: 760px; margin: 0 auto; background: var(--c-surface);
    border: 1px solid var(--c-border); border-radius: var(--radius-md);
    padding: 20px; box-shadow: var(--shadow-md);
}
#cmApp .cm-q {
    font-size: 17px; font-weight: 700; color: var(--c-text); line-height: 1.9;
    background: var(--c-surface-soft); border-radius: var(--radius-sm); padding: 14px 16px;
}
#cmApp .cm-q b { color: var(--c-primary); }

#cmApp .cm-figure {
    margin: 16px 0; padding: 12px; border-radius: var(--radius-sm);
    background: var(--c-surface-soft); border: 1px dashed var(--c-border); text-align: center;
}
#cmApp .cm-figure svg { width: 100%; height: auto; display: block; }
#cmApp .cm-fig-tip { font-size: 13px; color: var(--c-text-muted); margin-top: 6px; }

#cmApp .cm-steps { margin-top: 16px; }
#cmApp .cm-step {
    display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px;
    animation: cmIn .28s ease;
}
@keyframes cmIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
#cmApp .cm-no {
    flex: 0 0 30px; width: 30px; height: 30px; border-radius: 50%;
    background: linear-gradient(135deg, var(--c-primary), var(--c-accent-cyan));
    color: #fff; font-size: 14px; font-weight: 800;
    display: flex; align-items: center; justify-content: center;
}
#cmApp .cm-txt {
    flex: 1; font-size: 15px; line-height: 1.9; color: var(--c-text);
    background: var(--c-surface-soft); border-radius: var(--radius-sm); padding: 11px 14px;
}
#cmApp .cm-txt b { color: var(--c-primary); }
#cmApp .cm-step.last .cm-txt { background: var(--c-primary-soft); border: 1px solid var(--c-border); }

#cmApp .cm-ctrl { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 18px; }
#cmApp .cm-btn {
    border: none; border-radius: 999px; padding: 12px 20px; font-size: 15px; font-weight: 700;
    color: #fff; cursor: pointer; background: linear-gradient(135deg, var(--c-primary), var(--c-accent-cyan));
    box-shadow: var(--shadow-md);
}
#cmApp .cm-btn.gray { background: var(--c-surface-2); color: var(--c-text); box-shadow: none; border: 1px solid var(--c-border); }
#cmApp .cm-btn:disabled { opacity: .5; cursor: default; }

#cmApp .cm-progress { text-align: center; font-size: 14px; font-weight: 700; color: var(--c-text-sub); margin-top: 12px; }

#cmApp .cm-stat {
    max-width: 760px; margin: 18px auto 0; background: var(--c-surface);
    border: 1px solid var(--c-border); border-radius: var(--radius-md);
    padding: 14px 18px; box-shadow: var(--shadow-md); text-align: center;
    font-size: 14px; color: var(--c-text-sub);
}
#cmApp .cm-stat b { color: var(--c-primary); font-size: 18px; }

#cmApp .cm-ai, #cmApp .cm-info { max-width: 760px; margin: 30px auto 0; }
#cmApp .cm-ai h2, #cmApp .cm-info h2 { font-size: 20px; font-weight: 800; color: var(--c-text); margin-bottom: 10px; }
#cmApp .cm-ai p { font-size: 14px; color: var(--c-text-sub); line-height: 1.8; margin-bottom: 14px; }
#cmApp .cm-ai-row { display: flex; gap: 10px; flex-wrap: wrap; }
#cmApp .cm-out {
    margin-top: 14px; background: var(--c-surface-soft); border: 1px solid var(--c-border);
    border-radius: var(--radius-sm); padding: 16px 18px;
    font-size: 15px; line-height: 1.85; color: var(--c-text); white-space: pre-wrap;
}
#cmApp .cm-info ul { list-style: disc; padding-left: 22px; margin-bottom: 24px; }
#cmApp .cm-info li { font-size: 14px; line-height: 1.9; color: var(--c-text-sub); margin-bottom: 8px; }
#cmApp .cm-info li b { color: var(--c-text); }

@media (max-width: 560px) {
    #cmApp .cm-hero h1 { font-size: 24px; }
    #cmApp .cm-q { font-size: 16px; }
}