/* ============================================================
   紅色精靈篩選（工具 → 紅色精靈篩選，2026-10-06）
   開始畫面：兩個選檔區＋過去的掃描；工作區：來源列、偵測區設定、進度、時間軸、結果格；檢視器全螢幕
   ============================================================ */
.sf-page {
    padding: var(--space-lg) 0 var(--space-3xl);
    --sf-ok: #3fb37f; --sf-bad: #e0556a;
    --sf-tl-bg: rgba(255, 255, 255, 0.05); --sf-tl-bar: rgba(205, 195, 235, 0.55);
}
[data-theme="light"] .sf-page { --sf-ok: #23865a; --sf-bad: #c43a52; --sf-tl-bg: rgba(20, 10, 60, 0.05); --sf-tl-bar: rgba(70, 55, 120, 0.5); }
.sf-page .container { max-width: 1400px; }
.sf-page svg { flex: none; }
.sf-page [hidden] { display: none !important; }

/* ── 標題列 ── */
.sf-head { display: flex; align-items: center; justify-content: space-between; gap: 10px 20px; flex-wrap: wrap; margin-bottom: 16px; }
.sf-head-main { min-width: 0; flex: 1 1 420px; display: flex; align-items: baseline; gap: 12px; }
.sf-back { align-self: center; display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; border: 1px solid var(--color-border); color: var(--color-text-secondary); flex: none; }
.sf-back:hover { color: var(--color-accent); border-color: var(--color-accent); }
.sf-back svg { width: 15px; height: 15px; }
.sf-head h1 { font-size: 1.5rem; line-height: 1.2; white-space: nowrap; }
.sf-head p { min-width: 0; font-size: 0.84rem; color: var(--color-text-muted); }
.sf-head-tools { display: flex; align-items: center; gap: 8px; flex: none; }
.sf-app-link { text-decoration: none; }
.sf-standalone.sf-at-start .sf-back { visibility: hidden; }
.sf-standalone { padding-top: var(--space-md); }
.sf-privacy { flex: none; position: relative; font-size: 0.8rem; z-index: 20; }
.sf-privacy summary { display: flex; align-items: center; gap: 6px; padding: 6px 12px; cursor: pointer; color: var(--sf-ok); font-weight: 600; list-style: none; border-radius: 999px;
    background: color-mix(in srgb, var(--sf-ok) 10%, transparent); border: 1px solid color-mix(in srgb, var(--sf-ok) 35%, transparent); }
.sf-privacy summary::-webkit-details-marker { display: none; }
.sf-privacy summary svg { width: 16px; height: 16px; }
.sf-privacy-body { position: absolute; right: 0; top: calc(100% + 8px); width: min(420px, calc(100vw - 32px)); padding: 14px 16px; border-radius: var(--radius-lg);
    background: var(--dropdown-bg, var(--color-surface)); border: 1px solid color-mix(in srgb, var(--sf-ok) 35%, var(--color-border)); box-shadow: var(--shadow-lg);
    color: var(--color-text-secondary); line-height: 1.7; display: flex; flex-direction: column; gap: 6px; }

/* ── 共用元件 ── */
.sf-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px; border-radius: 10px; border: 1px solid var(--color-border);
    background: var(--color-surface); color: var(--color-text); font: inherit; font-size: 0.86rem; cursor: pointer; white-space: nowrap;
    transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast); }
.sf-btn:hover:not(:disabled) { border-color: var(--color-accent); }
.sf-btn:disabled { opacity: 0.5; cursor: default; }
.sf-btn-sm { padding: 5px 10px; font-size: 0.8rem; border-radius: 8px; }
.sf-btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-text); font-weight: 600; }
.sf-btn-primary:hover:not(:disabled) { background: var(--color-accent-hover); }
.sf-btn-primary.is-danger { background: var(--sf-bad); border-color: var(--sf-bad); color: #fff; }
.sf-btn-ghost { background: transparent; color: var(--color-text-muted); }
.sf-btn.is-on { border-color: var(--color-accent); color: var(--color-accent); background: var(--color-accent-soft); }
.sf-label { font-size: 0.78rem; font-weight: 600; color: var(--color-text-secondary); }
.sf-hint { font-size: 0.76rem; color: var(--color-text-muted); line-height: 1.6; }
.sf-select { padding: 6px 10px; border-radius: 8px; border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); font: inherit; font-size: 0.8rem; }
.sf-seg { display: inline-flex; padding: 3px; gap: 2px; border-radius: 10px; background: var(--color-surface); border: 1px solid var(--color-border); }
.sf-seg label { position: relative; }
.sf-seg input { position: absolute; opacity: 0; pointer-events: none; }
.sf-seg span { display: block; padding: 4px 12px; border-radius: 7px; font-size: 0.8rem; color: var(--color-text-secondary); cursor: pointer; }
.sf-seg input:checked + span { background: var(--color-accent-soft); color: var(--color-accent); font-weight: 600; }
.sf-seg input:focus-visible + span { outline: 2px solid var(--color-accent); }

/* ── 開始畫面 ── */
.sf-start { border-radius: var(--radius-xl); transition: box-shadow var(--transition-fast); }
.sf-start.is-drag { box-shadow: 0 0 0 2px var(--color-accent); }
.sf-pick-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.sf-drop { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; text-align: center; padding: 44px 20px; cursor: pointer;
    border: 1.5px dashed color-mix(in srgb, var(--color-accent) 40%, var(--color-border)); border-radius: var(--radius-xl); background: var(--color-surface);
    transition: border-color var(--transition-fast), background var(--transition-fast); }
.sf-drop:hover, .sf-drop:focus-visible { border-color: var(--color-accent); background: var(--color-accent-soft); outline: none; }
.sf-drop svg { width: 40px; height: 40px; color: var(--color-accent); }
.sf-drop strong { font-size: 1.05rem; }
.sf-drop span { font-size: 0.8rem; color: var(--color-text-muted); }
.sf-note { margin-top: 12px; font-size: 0.78rem; color: var(--color-text-muted); }
.sf-history { margin-top: 28px; }
.sf-history h2 { font-size: 1rem; margin-bottom: 10px; }
.sf-history ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.sf-history li { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: var(--radius-lg); background: var(--color-surface); border: 1px solid var(--color-border); }
.sf-h-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.sf-h-main strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sf-h-main span { font-size: 0.76rem; color: var(--color-text-muted); }

/* ── 工作區 ── */
.sf-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.sf-src { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; font-size: 0.82rem; color: var(--color-text-secondary); min-width: 0; }
.sf-src strong { color: var(--color-text); font-size: 0.95rem; overflow-wrap: anywhere; }

.sf-setup { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 16px; align-items: start; margin-bottom: 16px; }
.sf-roi { display: flex; flex-direction: column; gap: 10px; }
.sf-roi-stage { position: relative; border-radius: var(--radius-lg); overflow: hidden; background: #05040c; border: 1px solid var(--color-border); line-height: 0; }
.sf-roi-stage canvas { width: 100%; height: auto; max-height: 62vh; object-fit: contain; display: block; }
#sf-roi-draw { position: absolute; inset: 0; height: 100%; cursor: crosshair; touch-action: none; }
.sf-roi-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.sf-roi-tools .sf-hint { flex: 1 1 260px; }
.sf-roi-guide { margin: 0; padding: 10px 14px 10px 32px; border-radius: var(--radius-lg); background: var(--color-surface); border: 1px solid var(--color-border);
    font-size: 0.82rem; line-height: 1.65; color: var(--color-text-secondary); display: flex; flex-direction: column; gap: 2px; }
.sf-roi-guide li::marker { color: var(--color-accent); font-weight: 700; }
/* 狀態放左下：天空在上面，點通常點在上半部 */
.sf-roi-status { position: absolute; left: 10px; bottom: 10px; max-width: calc(100% - 20px); padding: 5px 11px; border-radius: 999px; line-height: 1.4;
    font-size: 0.78rem; color: #eae8f0; background: rgba(12, 10, 26, 0.78); border: 1px solid rgba(255, 255, 255, 0.14); pointer-events: none; }
.sf-roi-status.is-drawing { border-color: #F39F5A; color: #F39F5A; }
.sf-roi-status.is-done { border-color: rgba(63, 179, 127, 0.7); }
.sf-opts { display: flex; flex-direction: column; gap: 14px; padding: 16px; border-radius: var(--radius-lg); background: var(--color-surface); border: 1px solid var(--color-border); }
.sf-field { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
#sf-start-scan { padding: 11px 14px; font-size: 0.95rem; }

.sf-progress-wrap { margin-bottom: 10px; }
.sf-progress-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sf-progress { flex: 1 1 240px; height: 8px; border-radius: 4px; background: var(--color-surface); border: 1px solid var(--color-border); overflow: hidden; }
.sf-progress-bar { height: 100%; width: 0; background: var(--color-accent); transition: width 0.25s; }
.sf-progress-text { font-size: 0.8rem; color: var(--color-text-secondary); font-variant-numeric: tabular-nums; }

.sf-timeline-wrap { position: relative; margin-bottom: 14px; padding: 6px 8px; border-radius: var(--radius-lg); background: var(--color-surface); border: 1px solid var(--color-border); }
#sf-timeline { width: 100%; height: 64px; display: block; cursor: pointer; }
.sf-tl-legend { display: flex; flex-wrap: wrap; gap: 4px 16px; padding: 6px 2px 0; font-size: 0.72rem; color: var(--color-text-muted); }
.sf-tl-legend span { display: inline-flex; align-items: center; gap: 6px; }
.sf-tl-legend i { display: inline-block; flex: none; }
.sf-lg-bar { width: 8px; height: 10px; background: var(--sf-tl-bar); border-radius: 1px; }
.sf-lg-line { width: 14px; height: 2px; background: rgba(124, 196, 255, 0.8); }
.sf-lg-tick { width: 3px; height: 10px; background: #ff4d6d; box-shadow: 6px 0 0 #7cc4ff; margin-right: 6px; }
.sf-timeline-tip { position: absolute; top: -24px; transform: translateX(-50%); padding: 2px 8px; border-radius: 6px; font-size: 0.72rem; white-space: nowrap; pointer-events: none;
    background: var(--color-surface-elevated); border: 1px solid var(--color-border); font-variant-numeric: tabular-nums; }

/* ── 結果 ── */
.sf-filters { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px; margin-bottom: 12px; }
.sf-chips { display: flex; flex-wrap: wrap; gap: 6px; flex: 1 1 auto; }
.sf-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-surface);
    color: var(--color-text-secondary); font: inherit; font-size: 0.8rem; cursor: pointer; }
.sf-chip i { width: 8px; height: 8px; border-radius: 50%; background: var(--c); }
.sf-chip b { font-weight: 600; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.sf-chip.is-on { border-color: var(--c); color: var(--color-text); background: color-mix(in srgb, var(--c) 14%, transparent); }
.sf-chip.is-on b { color: var(--color-text); }
.sf-sens { display: inline-flex; align-items: center; gap: 8px; }
.sf-sens input { width: 130px; accent-color: var(--color-accent); }
.sf-export { display: flex; gap: 6px; }
.sf-relink { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px 14px; margin-bottom: 12px; border-radius: var(--radius-lg); font-size: 0.84rem;
    background: var(--color-accent-soft); border: 1px solid color-mix(in srgb, var(--color-accent) 40%, transparent); }
.sf-relink span { flex: 1 1 260px; }

.sf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.sf-card { border-radius: var(--radius-lg); overflow: hidden; background: var(--color-surface); border: 1px solid var(--color-border); cursor: pointer;
    transition: border-color var(--transition-fast), transform var(--transition-fast); }
.sf-card:hover, .sf-card:focus-visible { border-color: var(--color-accent); outline: none; }
.sf-card.is-no { opacity: 0.5; }
.sf-card.is-yes, .sf-card.is-star { border-color: color-mix(in srgb, var(--color-accent) 60%, var(--color-border)); }
.sf-thumb { position: relative; aspect-ratio: 4 / 3; background: #05040c; border-bottom: 2px solid var(--c); }
.sf-thumb canvas { width: 100%; height: 100%; display: block; }
.sf-card:not(.has-img) .sf-thumb canvas { opacity: 0.7; }
.sf-badge { position: absolute; top: 6px; left: 6px; padding: 2px 8px; border-radius: 999px; font-size: 0.7rem; font-weight: 700; background: rgba(0, 0, 0, 0.6); color: #fff; }
.sf-badge-yes { background: var(--sf-ok); }
.sf-badge-star { background: var(--color-accent); color: var(--color-accent-text); }
.sf-card-meta { padding: 8px 10px; display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; }
.sf-card-meta > div:first-child { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.sf-card-meta strong { font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sf-clock { font-size: 0.72rem; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.sf-card-sub { display: flex; gap: 10px; color: var(--color-text-muted); font-size: 0.74rem; font-variant-numeric: tabular-nums; }
.sf-red { position: relative; padding-left: 12px; }
.sf-red::before { content: ''; position: absolute; left: 0; top: 50%; width: 8px; height: 8px; margin-top: -4px; border-radius: 2px;
    background: color-mix(in srgb, #ff4d6d var(--r), #8b85a5); }
.sf-empty { padding: 30px 10px; text-align: center; color: var(--color-text-muted); font-size: 0.86rem; }
.sf-more { display: flex; margin: 16px auto 0; }

/* ── 檢視器 ── */
.sf-viewer { border: 0; padding: 0; margin: 0; inset: 0; background: #05040c; width: 100vw; height: 100dvh; max-width: 100vw; max-height: 100dvh; color: #eae8f0; }
.sf-viewer[open] { display: flex; flex-direction: column; }
.sf-viewer::backdrop { background: rgba(0, 0, 0, 0.8); }
.sf-viewer-bar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: rgba(20, 17, 40, 0.95); flex-wrap: wrap; }
.sf-v-title { flex: 1; min-width: 0; display: flex; align-items: baseline; gap: 4px 12px; flex-wrap: wrap; font-size: 0.82rem; color: #b3adc8; font-variant-numeric: tabular-nums; }
.sf-v-title strong { color: #fff; font-size: 0.95rem; }
.sf-v-cls { color: var(--c); font-weight: 700; }
.sf-icon-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; border: 0; background: transparent; color: #ddd; cursor: pointer; }
.sf-icon-btn:hover { background: rgba(255, 255, 255, 0.12); color: #fff; }
.sf-icon-btn.is-on { background: rgba(243, 159, 90, 0.2); color: #F39F5A; }
.sf-icon-btn:disabled { opacity: 0.4; }
.sf-icon-btn svg { width: 18px; height: 18px; }
.sf-seg-dark { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.1); }
.sf-seg-dark span { color: #b3adc8; }
.sf-viewer-body { position: relative; flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 10px; }
.sf-viewer-body canvas { max-width: 100%; max-height: 100%; object-fit: contain; image-rendering: auto; }
.sf-v-loading { position: absolute; inset: 0; display: grid; place-items: center; font-size: 0.9rem; color: #b3adc8; background: rgba(5, 4, 12, 0.5); }
.sf-viewer-foot { display: flex; align-items: center; gap: 12px; padding: 8px 12px 12px; background: rgba(20, 17, 40, 0.95); flex-wrap: wrap; }
.sf-strip { flex: 1 1 400px; display: flex; gap: 6px; overflow-x: auto; scrollbar-width: thin; padding: 3px; }
.sf-strip-item { width: 96px; height: 64px; flex: none; border-radius: 6px; cursor: pointer; background: #111; outline: 2px solid transparent; outline-offset: 1px; }
.sf-strip-item.is-ev { box-shadow: inset 0 -3px 0 #ff4d6d; }
.sf-strip-item.is-on { outline-color: #F39F5A; }
.sf-v-labels { display: flex; gap: 6px; }
.sf-lab { display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px; border-radius: 9px; border: 1px solid rgba(255, 255, 255, 0.15); background: transparent; color: #eae8f0; font: inherit; font-size: 0.84rem; cursor: pointer; }
.sf-lab kbd { font: inherit; font-size: 0.68rem; padding: 0 5px; border-radius: 4px; border: 1px solid rgba(255, 255, 255, 0.25); color: #b3adc8; }
.sf-lab:hover:not(:disabled) { border-color: #F39F5A; }
.sf-lab:disabled { opacity: 0.4; cursor: default; }
.sf-lab-yes.is-on { background: #3fb37f; border-color: #3fb37f; }
.sf-lab-no.is-on { background: #e0556a; border-color: #e0556a; }
.sf-lab-star.is-on { background: #F39F5A; border-color: #F39F5A; color: #0c0a1a; }

/* ── 查找方式（自動偵測／疊圖瀏覽） ── */
.sf-modes { display: flex; flex-direction: column; gap: 6px; width: 100%; }
.sf-mode { position: relative; display: block; cursor: pointer; }
.sf-mode input { position: absolute; opacity: 0; pointer-events: none; }
.sf-mode span { display: block; padding: 9px 11px; border-radius: 10px; border: 1px solid var(--color-border); font-size: 0.76rem; line-height: 1.55; color: var(--color-text-muted);
    transition: border-color var(--transition-fast), background var(--transition-fast); }
.sf-mode strong { display: block; font-size: 0.86rem; color: var(--color-text); margin-bottom: 2px; }
.sf-mode input:checked + span { border-color: var(--color-accent); background: var(--color-accent-soft); }
.sf-mode input:checked + span strong { color: var(--color-accent); }
.sf-mode input:focus-visible + span { outline: 2px solid var(--color-accent); }
.sf-mode input:disabled + span { opacity: 0.6; cursor: default; }
.sf-num-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 0.82rem; color: var(--color-text-secondary); }
.sf-input { width: 84px; padding: 6px 9px; border-radius: 8px; border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); font: inherit; font-size: 0.86rem; }
.sf-input:focus { outline: none; border-color: var(--color-accent); }
.sf-h-mode { font-weight: 700; color: var(--color-accent); margin-right: 4px; }

/* ── 疊圖瀏覽結果 ── */
.sf-gain { display: inline-flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--color-text-secondary); }
.sf-gain input { width: 120px; accent-color: var(--color-accent); }
.sf-gain output { min-width: 34px; font-variant-numeric: tabular-nums; color: var(--color-text); }
.sf-gain-dark { color: #b3adc8; }
.sf-gain-dark output { color: #fff; }
.sf-s-grid.is-diff .sf-s-thumb img { filter: brightness(var(--sf-b, 1)); }
.sf-s-review-bar { display: flex; align-items: center; gap: 10px 16px; flex-wrap: wrap; margin-bottom: 12px; padding: 12px 14px; border-radius: var(--radius-lg);
    background: var(--color-surface); border: 1px solid var(--color-border); }
.sf-s-review-bar .sf-btn-primary { padding: 10px 18px; font-size: 0.92rem; }
.sf-s-progress { font-size: 0.82rem; color: var(--color-text-secondary); font-variant-numeric: tabular-nums; }
.sf-check { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--color-text-secondary); cursor: pointer; }
.sf-check input { accent-color: var(--color-accent); width: 16px; height: 16px; }
.sf-s-help { margin: -4px 0 12px; }
.sf-s-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.sf-s-thumb { aspect-ratio: 16 / 9; border-bottom: 1px solid var(--color-border); }
.sf-s-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: 0; transition: opacity 0.2s; }
.sf-s-card.has-img .sf-s-thumb img { opacity: 1; }
.sf-s-card.is-viewed .sf-card-meta strong { color: var(--color-text-secondary); }
.sf-s-tags { position: absolute; left: 6px; top: 6px; right: 34px; display: flex; flex-wrap: wrap; gap: 4px; }
.sf-s-tags b { padding: 2px 8px; border-radius: 999px; font-size: 0.68rem; font-weight: 700; color: #0c0a1a; background: var(--c); }
.sf-s-seen { position: absolute; right: 6px; top: 6px; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 0.72rem;
    background: rgba(12, 10, 26, 0.7); color: #3fb37f; border: 1px solid rgba(63, 179, 127, 0.6); }
.sf-s-act { flex: 1 1 60px; max-width: 90px; height: 6px; align-self: center; border-radius: 3px; background: var(--color-border); overflow: hidden; }
.sf-s-act i { display: block; height: 100%; background: var(--color-accent); border-radius: 3px; }
.sf-dot { position: relative; padding-left: 11px; }
.sf-dot::before { content: ''; position: absolute; left: 0; top: 50%; width: 7px; height: 7px; margin-top: -3.5px; border-radius: 50%; background: var(--c); }
.sf-sv-body img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.sf-tle { flex: 1; display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.sf-tle-btn.is-on { background: var(--c); border-color: var(--c); color: #0c0a1a; font-weight: 600; }
.sf-tle-btn.is-on kbd { color: #0c0a1a; border-color: rgba(12, 10, 26, 0.35); }

/* ── 確認框（全站 * { margin: 0 } 會清掉 dialog 置中，明確寫回） ── */
.sf-dialog { position: fixed; inset: 0; margin: auto; height: fit-content; max-height: calc(100dvh - 32px); overflow: auto;
    border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-elevated); color: var(--color-text);
    padding: 20px; width: min(420px, calc(100% - 32px)); box-shadow: 0 24px 70px rgba(0, 0, 0, 0.5); }
[data-theme="light"] .sf-dialog { background: var(--color-surface); }
.sf-dialog::backdrop { background: rgba(0, 0, 0, 0.55); }
.sf-dialog h3 { font-size: 1.02rem; margin-bottom: 10px; }
.sf-confirm-msg { font-size: 0.86rem; color: var(--color-text-secondary); line-height: 1.7; }
.sf-dialog-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

@media (max-width: 860px) {
    .sf-head-main { flex-wrap: wrap; }
    .sf-head h1 { font-size: 1.3rem; }
    .sf-pick-row { grid-template-columns: 1fr; }
    .sf-drop { padding: 28px 16px; }
    .sf-setup { grid-template-columns: 1fr; }
    .sf-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
    .sf-sens input { width: 100px; }
    .sf-viewer-foot { flex-direction: column; align-items: stretch; }
    /* 窄螢幕：檢視器標題換到第二行佔滿，不要被按鈕擠成一字一行 */
    .sf-v-title { order: 10; flex-basis: 100%; }
    .sf-v-labels { justify-content: center; }
}

/* ── 下載頁（/tools/sprite/app） ── */
.sfa-hero { display: flex; gap: 20px; align-items: center; margin: 8px 0 24px; }
.sfa-hero img { width: 96px; height: 96px; border-radius: 22px; box-shadow: 0 10px 30px rgba(255, 60, 100, 0.25); flex: none; }
.sfa-hero h1 { font-size: 1.6rem; }
.sfa-hero p { margin-top: 4px; color: var(--color-text-secondary); font-size: 0.92rem; line-height: 1.7; max-width: 720px; }
.sfa-hero-actions { margin-top: 10px; display: flex; gap: 8px; }
.sfa-hero-actions a { text-decoration: none; }
.sfa-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
.sfa-card { padding: 20px; border-radius: var(--radius-xl); background: var(--color-surface); border: 1px solid var(--color-border); display: flex; flex-direction: column; gap: 12px; }
.sfa-card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.sfa-card h2 { font-size: 1.12rem; }
.sfa-badge { font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; color: var(--color-accent); background: var(--color-accent-soft); }
.sfa-badge-dim { color: var(--color-text-secondary); background: rgba(255, 255, 255, 0.06); }
.sfa-lead { font-size: 0.86rem; color: var(--color-text-secondary); line-height: 1.7; }
.sfa-big { padding: 12px 18px; font-size: 0.95rem; text-decoration: none; align-self: flex-start; }
.sfa-steps { padding-left: 20px; display: flex; flex-direction: column; gap: 8px; font-size: 0.84rem; color: var(--color-text-secondary); line-height: 1.65; }
.sfa-steps strong { display: block; color: var(--color-text); }
.sfa-steps li.is-you { color: var(--color-text); }
.sfa-steps li.is-you strong::after { content: ' ← 你的裝置'; color: var(--color-accent); font-weight: 600; font-size: 0.78rem; }
[data-lang="en"] .sfa-steps li.is-you strong::after { content: ' ← your device'; }
.sfa-files { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.sfa-file { display: flex; flex-direction: column; gap: 2px; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--color-border); text-decoration: none; color: var(--color-text);
    transition: border-color var(--transition-fast), background var(--transition-fast); }
.sfa-file:hover { border-color: var(--color-accent); }
.sfa-files li.is-you .sfa-file { border-color: var(--color-accent); background: var(--color-accent-soft); }
.sfa-files li.is-you .sfa-os::after { content: ' · 推薦'; color: var(--color-accent); font-size: 0.78rem; }
[data-lang="en"] .sfa-files li.is-you .sfa-os::after { content: ' · recommended'; }
.sfa-os { font-weight: 600; font-size: 0.9rem; }
.sfa-meta { font-size: 0.74rem; color: var(--color-text-muted); overflow-wrap: anywhere; }
.sfa-empty { padding: 14px; border-radius: 10px; background: rgba(255, 255, 255, 0.04); font-size: 0.86rem; color: var(--color-text-secondary); }
.sfa-notes summary { cursor: pointer; font-size: 0.84rem; color: var(--color-text-secondary); }
.sfa-notes ul { padding-left: 18px; margin: 8px 0; display: flex; flex-direction: column; gap: 6px; font-size: 0.8rem; color: var(--color-text-secondary); line-height: 1.65; }
.sfa-notes code { font-size: 0.76rem; padding: 1px 6px; border-radius: 4px; background: rgba(255, 255, 255, 0.08); }
@media (max-width: 860px) {
    .sfa-grid { grid-template-columns: 1fr; }
    .sfa-hero { align-items: flex-start; }
    .sfa-hero img { width: 64px; height: 64px; border-radius: 15px; }
}