/* =====================================================================
 * 01 AI 换脸视频鉴别 · 独立版式「帧一致性扫描台」
 * 靛蓝强调色 · 帧条 + 一致性曲线 + 风险印章
 * ===================================================================== */
.fb--fs { --fb-a: #4c5fd7; --fb-a-soft: #e6e9fb; }
:root[data-theme="dark"] .fb--fs { --fb-a: #8d9dff; --fb-a-soft: #1b2044; }

.fs-hero { padding-top: 30px; }
.fs-console { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .74fr); gap: 13px; margin-top: 20px; align-items: start; }
.fs-form { border-top: 3px solid var(--fb-a); }
.fs-fields { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.fs-sub-label { margin-top: 16px; }
.fs-flags { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }

/* 帧扫描面板 */
.fs-scan { position: relative; overflow: hidden; }
.fs-scan::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background: repeating-linear-gradient(0deg, var(--fb-scan) 0 1px, transparent 1px 4px);
}
.fs-scan-head {
    display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
    border-bottom: 1px solid var(--fb-line2); padding-bottom: 9px; position: relative;
}
.fs-scan-head span { font-family: var(--fb-font-mono); font-size: 9.5px; letter-spacing: .18em; color: var(--fb-a); }
.fs-scan-head b { font-family: var(--fb-font-mono); font-size: 12px; }
.fs-frames { display: flex; gap: 4px; margin: 13px 0 10px; position: relative; }
.fs-frame {
    flex: 1 1 0; min-width: 0; height: 46px; border: 1px solid var(--fb-line2);
    border-radius: 2px; background: var(--fb-card2); position: relative; overflow: hidden;
}
.fs-frame::before {
    content: ""; position: absolute; left: 50%; top: 18%; width: 44%; height: 56%;
    transform: translateX(-50%); border-radius: 50% 50% 42% 42%;
    background: var(--fb-line2);
}
.fs-frame::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 30%;
    background: var(--fb-card3);
}
.fs-frame.is-noise { border-color: var(--fb-danger); }
.fs-frame.is-noise::before { background: var(--fb-danger-soft); border: 1px dashed var(--fb-danger); }
.fs-frame.is-jump { animation: fs-jump 1.6s ease-in-out infinite; }
@keyframes fs-jump { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-2px); } }
.fs-frame i {
    position: absolute; left: 2px; bottom: 1px; font-family: var(--fb-font-mono);
    font-size: 8px; color: var(--fb-muted); font-style: normal;
}
.fs-curve { width: 100%; height: auto; display: block; position: relative; }
.fs-axis { stroke: var(--fb-line2); stroke-width: 1; }
.fs-axis--mid { stroke-dasharray: 4 4; }
.fs-curve polyline { fill: none; stroke: var(--fb-a); stroke-width: 1.8; stroke-linejoin: round; }
.fs-dot { fill: var(--fb-danger); }
.fs-scan-foot {
    display: flex; align-items: center; justify-content: space-between; gap: 10px;
    margin-top: 10px; padding-top: 11px; border-top: 1px solid var(--fb-line2); position: relative;
}
.fs-score { display: flex; flex-direction: column; gap: 2px; }
.fs-score span { font-family: var(--fb-font-mono); font-size: 9.5px; letter-spacing: .18em; color: var(--fb-muted); }
.fs-score b { font-family: var(--fb-font-mono); font-size: 28px; line-height: 1.1; color: var(--fb-a); font-variant-numeric: tabular-nums; }
.fs-stamp {
    display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px;
    border: 2px solid var(--fb-line2); border-radius: 3px; transform: rotate(-7deg);
    font-family: var(--fb-font-mono); font-size: 12px; font-weight: 700; letter-spacing: .12em;
    color: var(--fb-muted); background: transparent;
}
.fs-stamp i { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.fs-stamp.lv-low { color: var(--fb-ok); border-color: var(--fb-ok); }
.fs-stamp.lv-mid { color: var(--fb-warn); border-color: var(--fb-warn); }
.fs-stamp.lv-high { color: var(--fb-danger); border-color: var(--fb-danger); }
.fs-stamp.lv-max { color: var(--fb-danger); border-color: var(--fb-danger); background: var(--fb-danger-soft); }
.fs-scan-note {
    margin: 11px 0 0; padding-top: 10px; border-top: 1px dashed var(--fb-line2);
    font-size: 11.5px; line-height: 1.75; color: var(--fb-muted); position: relative;
}

/* 结果区 */
.fs-split { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr); gap: 13px; margin-top: 13px; }
.fs-ai { border-left: 3px solid var(--fb-warm); }
.fs-ai-lead { font-size: 13.5px; line-height: 1.9; color: var(--fb-ink2); margin: 0 0 12px; }
.fs-ai-lead b { color: var(--fb-ink); }
.fs-batch { min-width: 960px; }
.fs-batch td input[type="text"], .fs-batch td input[type="number"] { padding: 5px 7px; font-size: 12px; min-width: 62px; }
.fs-prose b { color: var(--fb-ink); }
.fs-prose p { margin-bottom: 11px; }

@media (max-width: 1000px) { .fs-console, .fs-split { grid-template-columns: 1fr; } }
@media (max-width: 700px) {
    .fs-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .fs-flags { grid-template-columns: 1fr; }
}
@media (max-width: 430px) { .fs-fields { grid-template-columns: 1fr; } }