/* ===== 成绩快速统计 score-stats ===== */
.ss-row2 { display: grid; grid-template-columns: 1fr 110px; gap: 10px; }
.ss-textarea {
    width: 100%;
    min-height: 210px;
    padding: 12px 14px;
    font-size: 14px;
    font-family: Consolas, Menlo, monospace;
    line-height: 1.9;
    color: var(--c-text);
    background: var(--c-surface-soft);
    border: 1px solid var(--c-border);
    border-radius: 12px;
    outline: none;
    resize: vertical;
}
.ss-textarea:focus { border-color: #0a96d4; box-shadow: 0 0 0 3px rgba(10,150,212,.14); }
.ss-input-btns { display: flex; align-items: center; gap: 8px; margin: 8px 0; }
.ss-count { font-size: 12.5px; color: var(--c-text-muted); margin-left: auto; }
.ss-ai-btn { margin-top: 10px; height: 48px; font-weight: 800; }

/* 空态 */
.ss-empty { text-align: center; padding: 60px 10px; color: var(--c-text-muted); }
.ss-empty-icon { font-size: 54px; margin-bottom: 12px; opacity: .55; }
.ss-empty p { font-size: 13.5px; line-height: 1.9; margin: 0; }

/* 指标 */
.ss-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: 12px 0;
}
.ss-metric {
    border: 1px solid var(--c-border);
    border-radius: 12px;
    background: var(--c-surface-soft);
    padding: 10px 6px;
    text-align: center;
}
.ss-metric .k { display: block; font-size: 11.5px; color: var(--c-text-muted); margin-bottom: 3px; }
.ss-metric .v { display: block; font-size: 20px; font-weight: 900; color: var(--c-text); font-variant-numeric: tabular-nums; }
.ss-metric.is-hl { background: linear-gradient(135deg, rgba(10,150,212,.14), rgba(10,150,212,.05)); border-color: rgba(10,150,212,.45); }
.ss-metric.is-hl .v { color: #0a96d4; font-size: 24px; }

.ss-rates { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.ss-rate {
    border-radius: 12px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
}
.ss-rate .k { font-size: 12.5px; font-weight: 700; opacity: .92; }
.ss-rate .v { font-size: 24px; font-weight: 900; font-variant-numeric: tabular-nums; }
.ss-pass { background: linear-gradient(135deg, #27b08a, #1d8f6f); }
.ss-exc { background: linear-gradient(135deg, #f5a623, #ec8f0c); }

/* 分布图 */
.ss-chart-title { font-size: 14px; font-weight: 800; margin: 6px 0 10px; }
.ss-chart { display: flex; flex-direction: column; gap: 7px; }
.ss-bar-row { display: grid; grid-template-columns: 78px 1fr 92px; align-items: center; gap: 10px; font-size: 12.5px; }
.ss-bar-lab { color: var(--c-text-sub); font-weight: 700; text-align: right; }
.ss-bar-track { height: 22px; background: var(--c-surface-soft); border: 1px solid var(--c-border); border-radius: 7px; overflow: hidden; }
.ss-bar-fill {
    height: 100%;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
    color: #fff;
    font-size: 11.5px;
    font-weight: 800;
    min-width: 0;
    transition: width .5s cubic-bezier(.22,1,.36,1);
    white-space: nowrap;
    box-sizing: border-box;
}
.ss-bar-val { color: var(--c-text-sub); font-weight: 700; font-variant-numeric: tabular-nums; }

/* AI 面板 */
.ss-ai-panel {
    margin-top: 18px;
    border: 1px solid rgba(10,150,212,.35);
    border-radius: 14px;
    background: linear-gradient(160deg, rgba(10,150,212,.08), rgba(10,150,212,.02));
    padding: 16px;
}
.ss-ai-title { font-size: 15px; font-weight: 900; margin: 0 0 10px; }
.ss-ai-loading { font-size: 13.5px; color: var(--c-text-sub); margin: 8px 0; }
.ss-ai-block { margin-bottom: 12px; }
.ss-ai-block:last-child { margin-bottom: 0; }
.ss-ai-block h4 { font-size: 13px; font-weight: 900; margin: 0 0 6px; color: #0a96d4; }
.ss-ai-block p, .ss-ai-block li { font-size: 13.5px; line-height: 1.85; color: var(--c-text); margin: 0; }
.ss-ai-block ul { margin: 0; padding-left: 20px; }
.ss-ai-block li { margin-bottom: 4px; }
.ss-ai-error { color: #e0447c; font-size: 13.5px; }

@media (max-width: 760px) {
    .ss-metrics { grid-template-columns: repeat(2, 1fr); }
    .ss-bar-row { grid-template-columns: 64px 1fr 74px; gap: 6px; font-size: 11.5px; }
}