*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
    background: #f6f7fb;
    color: #1a3a5c;
    font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.5;
    padding: 20px 18px 48px;
}
a { color: #1a3a5c; text-decoration: none; }
a:hover { text-decoration: underline; }

.fr-header {
    background: rgba(255, 255, 255, 0.82);
    border: 1px solid rgba(53, 53, 53, 0.12);
    border-radius: 18px;
    box-shadow: 0px 4px 16px 0px rgba(28, 33, 46, 0.06);
    margin-bottom: 26px;
    padding: 20px 24px 16px;
    position: sticky;
    top: 10px;
    z-index: 5;
}
.fr-header-row {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: space-between;
}
.fr-header h1 { font-size: 1.4rem; }
.fr-home { font-weight: 700; }
.fr-summary { color: #4a5a78; font-size: 0.85rem; }

.fr-toolbar {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 12px;
}
.fr-nav-button {
    background: rgba(155, 212, 229, 0.32);
    border-radius: 999px;
    color: #1a3a5c;
    font-weight: 700;
    padding: 0.55em 1.1em;
}
.fr-nav-button.disabled {
    opacity: 0.4;
    pointer-events: none;
}
.fr-page-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
}
.fr-page-link {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(53, 53, 53, 0.16);
    border-radius: 6px;
    color: #1a3a5c;
    font-family: monospace;
    font-size: 0.85rem;
    padding: 0.3em 0.6em;
}
.fr-page-link.active {
    background: #1a3a5c;
    color: #fff;
}

.fr-legend {
    color: #4a5a78;
    font-size: 0.82rem;
    margin-top: 12px;
}

.fr-unit {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0px 4px 16px 0px rgba(28, 33, 46, 0.06);
    margin-bottom: 24px;
    padding: 18px 20px;
}
.fr-unit-header {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 6px;
}
.fr-sample-id {
    color: #1a3a5c;
    font-family: monospace;
    font-size: 0.9rem;
    font-weight: 700;
    word-break: break-all;
}
.fr-gt-prompt {
    color: #1a3a5c;
    font-size: 0.92rem;
    margin: 6px 0 10px;
}

.fr-mode-row {
    border-top: 1px dashed rgba(53, 53, 53, 0.16);
    margin-top: 10px;
    padding-top: 10px;
}
.fr-mode-head {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 6px;
}
.fr-mode-badge {
    background: rgba(168, 213, 162, 0.42);
    border-radius: 999px;
    color: #1f3d22;
    font-size: 0.78rem;
    font-weight: 800;
    padding: 0.2em 0.7em;
}
.fr-mode-meta {
    margin-top: 7px;
}
.fr-mode-prompt {
    color: #1a3a5c;
    font-size: 0.85rem;
    line-height: 1.4;
    margin: 2px 0;
}
.fr-scores {
    color: #45506b;
    font-size: 0.8rem;
    line-height: 1.4;
    margin: 2px 0;
}
.fr-frames {
    color: #45506b;
    font-size: 0.8rem;
    line-height: 1.4;
    margin: 2px 0;
}

.fr-video-row {
    display: grid;
    gap: 8px;
    grid-template-columns: repeat(var(--cols, 6), minmax(0, 1fr));
}
.fr-video-card { display: block; }
.fr-video-card h3 {
    color: #1a3a5c;
    font-size: 0.72rem;
    font-weight: 700;
    margin-bottom: 3px;
    text-align: center;
}
.comparison-video-wrap { position: relative; display: block; }
.comparison-video-wrap::after {
    border: 3px solid transparent;
    border-radius: 8px;
    box-sizing: border-box;
    content: "";
    inset: 0;
    pointer-events: none;
    position: absolute;
    transition: border-color 80ms linear;
}
.comparison-video-wrap.event-active::after { border-color: #ff2828; }
.fr-video {
    background: #000;
    border-radius: 8px;
    display: block;
    width: 100%;
}
.seek-event {
    background: rgba(155, 212, 229, 0.32);
    border: 1px solid rgba(53, 53, 53, 0.16);
    border-radius: 999px;
    color: #1a3a5c;
    cursor: pointer;
    display: block;
    font-family: inherit;
    font-size: 0.72rem;
    font-weight: 700;
    margin: 5px auto 0;
    padding: 0.3em 0.8em;
}
.seek-event:hover { filter: brightness(1.05); }
.fr-card-scores {
    color: #45506b;
    display: flex;
    flex-wrap: wrap;
    font-size: 0.68rem;
    font-weight: 600;
    gap: 4px 8px;
    justify-content: center;
    line-height: 1.3;
    margin-top: 5px;
    text-align: center;
}
.fr-card-scores span {
    background: rgba(155, 212, 229, 0.18);
    border-radius: 6px;
    padding: 0.1em 0.45em;
    white-space: nowrap;
}
.fr-card-scores .fr-card-total {
    background: rgba(168, 213, 162, 0.42);
    color: #1f3d22;
    font-weight: 800;
}
.comparison-missing {
    align-items: center;
    background: rgba(255, 255, 255, 0.65);
    border: 1px dashed rgba(53, 53, 53, 0.22);
    border-radius: 8px;
    color: #666;
    display: flex;
    flex-direction: column;
    font-size: 0.75rem;
    justify-content: center;
    min-height: 90px;
    padding: 0.6em;
    text-align: center;
}

.fr-footer { margin-top: 18px; }

@media (max-width: 700px) {
    .fr-video-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    body { padding: 16px 14px 40px; }
}
@media (max-width: 480px) {
    .fr-video-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}