/* ============================================================
   Music · 搜索页 + 沉浸式播放器
   页面部分跟随站点主题变量；沉浸式覆盖层固定深色（封面模糊背景）
   ============================================================ */

/* hidden 属性优先于任何 display 声明（不依赖 bootstrap reboot） */
.mu-ovl[hidden],
.mu-mini[hidden],
.mu-float[hidden],
.mu-orb[hidden],
.mu-toast[hidden],
.mu-dl[hidden],
.mu-export[hidden],
.mu-results[hidden],
.mu-favorites[hidden] { display: none !important; }

/* ── 搜索区 ──
   页头与全站的 .page-head 同源（style.css §54）：左对齐、mono 路径标签、
   展宽大标题。搜索框和 chip 一律 hairline，不再有卡片底和阴影。 */
.mu-page {
    max-width: 980px;
    margin: 0 auto;
    padding-bottom: 120px; /* 给迷你播放条留空间 */
}

.mu-hero { padding-bottom: var(--space-5, 24px); }

.mu-search {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 620px;
    margin-top: var(--space-5, 24px);
    padding: 5px 5px 5px 18px;
    background: transparent;
    border: 1px solid var(--rule-strong);
    border-radius: var(--radius-pill, 980px);
    transition: border-color var(--dur-base) var(--ease-out);
}

.mu-search:focus-within { border-color: var(--brand); }

.mu-search__icon {
    color: var(--text-tertiary);
    font-size: 1rem;
    flex-shrink: 0;
}

.mu-search__input {
    flex: 1;
    min-width: 0;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.95rem;
    padding: 10px 0;
    color: var(--text-primary);
    font-family: var(--font-sans);
}

.mu-search__input::placeholder { color: var(--text-tertiary); }

.mu-search__btn {
    flex-shrink: 0;
    border: 1px solid var(--text-primary);
    border-radius: var(--radius-pill, 980px);
    background: var(--text-primary);
    color: var(--bg-body);
    font-family: var(--font-data);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 11px 22px;
    cursor: pointer;
    transition: background var(--dur-fast) ease, border-color var(--dur-fast) ease, color var(--dur-fast) ease;
}

.mu-search__btn:hover {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--brand-contrast);
}
.mu-search__btn:active { transform: scale(0.97); }
.mu-search__btn:disabled { opacity: 0.5; cursor: default; transform: none; }

/* 搜索历史 */
.mu-history {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: var(--space-4, 16px);
    min-height: 30px;
}

.mu-history__chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--rule);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-pill, 980px);
    font-size: 0.8rem;
    padding: 5px 14px;
    cursor: pointer;
    transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}

.mu-history__chip:hover {
    color: var(--brand);
    border-color: var(--brand);
}

/* 标签切换：和 /blog 的 .tag-chip 是同一套读法 */
.mu-tabs {
    display: flex;
    gap: 8px;
    padding: var(--space-5, 24px) 0 var(--space-3, 12px);
}

.mu-tabs__btn {
    border: 1px solid var(--rule);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-pill, 980px);
    padding: 6px 16px;
    font-family: var(--font-data);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}

.mu-tabs__btn:hover { border-color: var(--brand); color: var(--brand); }
.mu-tabs__btn.active {
    background: var(--text-primary);
    color: var(--bg-body);
    border-color: var(--text-primary);
}

.mu-tabs__count { font-size: 0.68rem; opacity: 0.75; }

/* ── 结果列表 ── */
.mu-results,
.mu-favorites { margin-top: var(--space-4, 16px); }

.mu-hint {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--space-7, 48px) var(--space-4, 16px);
    font-size: 0.95rem;
}

.mu-hint i { font-size: 2rem; display: block; margin-bottom: 12px; color: var(--text-tertiary); }

.mu-row {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr) minmax(0, 0.7fr) 52px 44px;
    align-items: center;
    gap: 14px;
    padding: 10px 14px;
    border-radius: var(--radius-m, 14px);
    cursor: pointer;
    transition: background var(--dur-fast) ease;
}

.mu-row:hover { background: var(--bg-subtle); }

.mu-row__art {
    position: relative;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-s, 10px);
    overflow: hidden;
    background: var(--bg-subtle);
    flex-shrink: 0;
}

.mu-row__art img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.mu-row__art::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'%3E%3Cpath d='m11.596 8.697-6.363 3.692c-.54.313-1.233-.066-1.233-.697V4.308c0-.63.692-1.01 1.233-.696l6.363 3.692a.802.802 0 0 1 0 1.393z'/%3E%3C/svg%3E") center/22px no-repeat;
    opacity: 0;
    transition: opacity var(--dur-fast) ease;
}

.mu-row:hover .mu-row__art::after { opacity: 1; }

/* 播放中的行 */
.mu-row.playing .mu-row__name { color: var(--brand); }
.mu-row.playing .mu-row__art::after { opacity: 0; }

.mu-eq {
    position: absolute;
    inset: 0;
    display: none;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
    background: rgba(0, 0, 0, 0.45);
    padding-bottom: 14px;
}

.mu-row.playing .mu-eq { display: flex; }

.mu-eq span {
    width: 3px;
    background: #fff;
    border-radius: 2px;
    height: 6px;
    animation: muEq 0.9s ease-in-out infinite;
}

.mu-eq span:nth-child(2) { animation-delay: 0.25s; }
.mu-eq span:nth-child(3) { animation-delay: 0.5s; }

.mu-row.playing.paused .mu-eq span { animation-play-state: paused; }

@keyframes muEq {
    0%, 100% { height: 5px; }
    50% { height: 18px; }
}

.mu-row__main { min-width: 0; }

.mu-row__name {
    font-weight: 600;
    font-size: 0.98rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 8px;
}

.mu-row__name .mu-vip {
    flex-shrink: 0;
    font-size: 0.62rem;
    font-weight: 700;
    color: #c78d2c;
    border: 1px solid #c78d2c;
    border-radius: 4px;
    padding: 0 4px;
    line-height: 1.5;
}

.mu-row__artist {
    font-size: 0.83rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}

.mu-row__album {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-row__dur {
    font-size: 0.83rem;
    color: var(--text-tertiary);
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.mu-row__act {
    display: flex;
    justify-content: center;
    align-items: center;
}

.mu-row__spin {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-strong);
    border-top-color: var(--brand);
    border-radius: 50%;
    animation: muSpin 0.7s linear infinite;
    display: none;
}

.mu-row.loading .mu-row__spin { display: block; }
.mu-row.loading .mu-row__heart { display: none; }

.mu-row__heart {
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    font-size: 1rem;
    line-height: 1;
    transition: color var(--dur-fast) ease, transform var(--dur-fast) ease;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mu-row__heart:hover { transform: scale(1.15); }
.mu-row__heart.on { color: var(--red, #e74c3c); }

/* 心形按钮的图标需要 inline-block 才能应用 transform 动画 */
.mu-row__heart i,
.mu-qrow__fav i,
.mu-ovl__favbtn i,
.mu-meta__fav i { display: inline-block; }

@keyframes muHeartPop {
    0%   { transform: scale(0.4); }
    45%  { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.mu-row__heart.pop i,
.mu-qrow__fav.pop i,
.mu-ovl__favbtn.pop i,
.mu-meta__fav.pop i { animation: muHeartPop 0.4s var(--ease-out, ease-out); }

@keyframes muSpin { to { transform: rotate(360deg); } }

.mu-more { text-align: center; margin: var(--space-5, 24px) 0; }

.mu-more__btn {
    border: 1px solid var(--border-medium);
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--radius-pill, 980px);
    padding: 9px 28px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--dur-fast) ease;
}

.mu-more__btn:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-soft); }
.mu-more__btn:disabled { opacity: 0.55; cursor: default; }

/* ── 通用图标按钮 ── */
.mu-ibtn {
    border: none;
    background: transparent;
    color: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    font-size: 1.15rem;
    line-height: 1;
    transition: transform var(--dur-fast) ease, background var(--dur-fast) ease, opacity var(--dur-fast) ease;
}

.mu-ibtn:hover { transform: scale(1.08); }
.mu-ibtn:active { transform: scale(0.94); }

/* ── 迷你播放条 ── */
.mu-mini {
    position: fixed;
    left: 50%;
    transform: translateX(-50%) translateY(0);
    bottom: 14px;
    width: min(680px, calc(100vw - 24px));
    z-index: 1055;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px 10px 10px;
    border-radius: var(--radius-l, 20px);
    background: var(--bg-elevated); /* color-mix 不支持时的回退 */
    background: color-mix(in srgb, var(--bg-elevated) 82%, transparent);
    -webkit-backdrop-filter: blur(22px) saturate(1.7);
    backdrop-filter: blur(22px) saturate(1.7);
    border: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lift);
    color: var(--text-primary);
    transition: transform var(--dur-slow) var(--ease-out), opacity var(--dur-slow) var(--ease-out);
}

.mu-mini.hiding {
    transform: translateX(-50%) translateY(120%);
    opacity: 0;
}

.mu-mini__progress {
    position: absolute;
    top: 0;
    left: 16px;
    right: 16px;
    height: 2.5px;
    border-radius: 2px;
    background: var(--border-subtle);
    overflow: hidden;
}

.mu-mini__progress span {
    display: block;
    height: 100%;
    width: 0;
    background: var(--brand);
    border-radius: 2px;
}

.mu-mini__art {
    position: relative;
    width: 46px;
    height: 46px;
    border-radius: var(--radius-s, 10px);
    overflow: hidden;
    border: none;
    padding: 0;
    cursor: pointer;
    flex-shrink: 0;
    background: var(--bg-subtle);
}

.mu-mini__art img { width: 100%; height: 100%; object-fit: cover; display: block; }

.mu-mini__art i {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: rgba(0, 0, 0, 0.35);
    opacity: 0;
    transition: opacity var(--dur-fast) ease;
    font-size: 1.1rem;
}

.mu-mini__art:hover i { opacity: 1; }

.mu-mini__meta { flex: 1; min-width: 0; cursor: pointer; }

.mu-mini__name {
    font-weight: 600;
    font-size: 0.92rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-mini__artist {
    font-size: 0.78rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-mini__ctrl {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.mu-ibtn--main {
    background: var(--brand);
    color: var(--brand-contrast);
    width: 38px;
    height: 38px;
    font-size: 1.25rem;
}

.mu-ibtn--main:hover { background: var(--brand-hover); }

/* ── 可选全局悬浮窗 ── */
.mu-float {
    position: fixed;
    right: max(18px, env(safe-area-inset-right));
    bottom: max(18px, env(safe-area-inset-bottom));
    z-index: 1055;
    width: min(360px, calc(100vw - 36px));
    min-height: 86px;
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    padding: 11px 78px 11px 11px;
    color: var(--text-primary);
    background: var(--bg-elevated);
    background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
    border: 1px solid var(--border-subtle);
    border-radius: 22px;
    box-shadow: 0 18px 56px rgba(0, 0, 0, 0.28), var(--shadow-lift);
    -webkit-backdrop-filter: blur(24px) saturate(1.65);
    backdrop-filter: blur(24px) saturate(1.65);
    animation: muFloatIn 0.32s var(--ease-out, ease-out);
}

@keyframes muFloatIn {
    from { opacity: 0; transform: translateY(12px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.mu-float__art {
    position: relative;
    width: 64px;
    height: 64px;
    padding: 0;
    overflow: hidden;
    border: 0;
    border-radius: 15px;
    background: var(--bg-subtle);
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.22);
}

.mu-float__art img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.mu-float__art i {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 1.15rem;
    background: rgba(0, 0, 0, 0.38);
    opacity: 0;
    transition: opacity var(--dur-fast) ease;
}

.mu-float__art:hover i,
.mu-float__art:focus-visible i { opacity: 1; }

.mu-float__meta { min-width: 0; }

.mu-float__name {
    overflow: hidden;
    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 650;
    line-height: 1.3;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.mu-float__artist {
    margin-top: 4px;
    overflow: hidden;
    color: var(--text-secondary);
    font-size: 0.76rem;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.mu-float__ctrl {
    display: flex;
    align-items: center;
    gap: 0;
    color: var(--text-primary);
}

.mu-float__ctrl .mu-ibtn { padding: 7px; font-size: 1rem; }

.mu-float__play {
    width: 36px;
    height: 36px;
    margin: 0 1px;
    color: var(--brand-contrast);
    background: var(--brand);
}

.mu-float__play:hover { background: var(--brand-hover); }

.mu-float__actions {
    position: absolute;
    top: 9px;
    right: 9px;
    display: flex;
    align-items: center;
    gap: 2px;
}

.mu-float__collapse,
.mu-float__close {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    padding: 0;
    border: 0;
    border-radius: 50%;
    color: var(--text-secondary);
    background: transparent;
    cursor: pointer;
    transition: color var(--dur-fast) ease, background var(--dur-fast) ease;
}

.mu-float__collapse:hover,
.mu-float__collapse:focus-visible {
    color: var(--text-primary);
    background: var(--bg-subtle);
}

.mu-float__close:hover,
.mu-float__close:focus-visible {
    color: #e5484d;
    background: var(--bg-subtle);
}

/* ── 可选悬浮球 ── */
.mu-orb {
    position: fixed;
    right: max(18px, env(safe-area-inset-right));
    bottom: max(18px, env(safe-area-inset-bottom));
    z-index: 1055;
    width: 64px;
    height: 64px;
    overflow: hidden;
    border: 2px solid color-mix(in srgb, var(--border-strong) 75%, transparent);
    border-radius: 50%;
    background: var(--bg-elevated);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.32), 0 0 0 5px color-mix(in srgb, var(--bg-elevated) 58%, transparent);
    -webkit-backdrop-filter: blur(18px) saturate(1.5);
    backdrop-filter: blur(18px) saturate(1.5);
    animation: muFloatIn 0.3s var(--ease-out, ease-out);
    cursor: pointer;
}

.mu-orb > img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.mu-orb__play {
    position: absolute;
    inset: auto;
    top: 50%;
    left: 50%;
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 0;
    border-radius: inherit;
    color: #fff;
    font-size: 1.35rem;
    background: rgba(0, 0, 0, 0.34);
    cursor: pointer;
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: opacity var(--dur-fast) ease, background var(--dur-fast) ease;
}

.mu-orb:hover .mu-orb__play,
.mu-orb:focus-within .mu-orb__play,
.mu-orb__play:focus-visible { opacity: 1; }

.mu-orb__play:hover { background: rgba(0, 0, 0, 0.5); }

/* 全屏播放器打开时收起站点 chrome，避免导航栏干扰沉浸体验。 */
html.mu-immersive #app-header,
html.mu-immersive .top-spacer {
    height: 0 !important;
    min-height: 0 !important;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

html.mu-immersive #app-header { transform: translateY(-100%); }

html.mu-immersive #app-footer,
html.mu-immersive #scrollToTop { display: none !important; }

/* ── 沉浸式播放器 ── */
.mu-ovl {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    color: #fff;
    opacity: 0;
    transform: translateY(6%);
    transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
    /* clip 禁止一切程序化滚动（focus / scrollIntoView），避免侧板、弹层把整个播放器推偏 */
    overflow: hidden;
    overflow: clip;
    background: #101014;
}

.mu-ovl.open { opacity: 1; transform: translateY(0); }

.mu-ovl__bg {
    position: absolute;
    inset: -12%;
    z-index: 0;
    pointer-events: none;
}

.mu-ovl__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(90px) saturate(1.4) brightness(0.5);
    transform: scale(1.3);
    animation: muDrift 46s ease-in-out infinite alternate;
}

@keyframes muDrift {
    from { transform: scale(1.3) rotate(0deg); }
    to   { transform: scale(1.45) rotate(6deg); }
}

.mu-ovl__shade {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(8, 8, 12, 0.35) 0%, rgba(8, 8, 12, 0.15) 40%, rgba(8, 8, 12, 0.55) 100%);
}

.mu-ovl__top {
    position: relative;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px 0;
}

.mu-ovl__top .mu-ibtn { color: rgba(255, 255, 255, 0.85); font-size: 1.3rem; }
.mu-ovl__top .mu-ibtn:hover { background: rgba(255, 255, 255, 0.12); }

.mu-ovl__top-actions {
    display: flex;
    align-items: center;
    gap: 2px;
}

.mu-ovl__favbtn.on { color: var(--red, #e74c3c); }

/* 导出按钮：进行中呼吸闪烁，完成后亮点提示 */
.mu-ovl__exportbtn { position: relative; }

.mu-ovl__exportbtn.busy i { animation: muExportPulse 1.4s ease-in-out infinite; }

.mu-ovl__exportbtn.ready::after {
    content: '';
    position: absolute;
    top: 7px;
    right: 7px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #4cd964;
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.35);
}

@keyframes muExportPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
}

/* ── 下载音质菜单 ── */
.mu-dl {
    position: absolute;
    top: 64px;
    right: 22px;
    z-index: 6;
    width: min(300px, calc(100vw - 44px));
    border-radius: var(--radius-m, 14px);
    background: rgba(24, 24, 30, 0.92);
    -webkit-backdrop-filter: blur(24px) saturate(1.6);
    backdrop-filter: blur(24px) saturate(1.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    overflow: hidden;
    animation: muFloatIn 0.22s var(--ease-out, ease-out);
}

.mu-dl__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 6px 8px 16px;
    font-size: 0.85rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mu-dl__head .mu-ibtn { color: rgba(255, 255, 255, 0.6); font-size: 0.9rem; }

.mu-dl__list { padding: 6px; }

.mu-dl__row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    width: 100%;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    text-align: left;
    padding: 10px 12px;
    border-radius: var(--radius-s, 10px);
    cursor: pointer;
    transition: background var(--dur-fast) ease;
}

.mu-dl__row:hover { background: rgba(255, 255, 255, 0.1); }

.mu-dl__label { font-size: 0.9rem; font-weight: 600; white-space: nowrap; }

.mu-dl__meta {
    font-size: 0.74rem;
    color: rgba(255, 255, 255, 0.5);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-dl__row i { color: rgba(255, 255, 255, 0.55); font-size: 0.95rem; }
.mu-dl__row:hover i { color: #fff; }

.mu-dl__hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 18px 12px;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.55);
}

.mu-dl__hint .mu-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-top-color: #fff;
    border-radius: 50%;
    animation: muSpin 0.7s linear infinite;
}

/* ── 导出音乐视频面板 ── */
.mu-export {
    position: absolute;
    inset: 0;
    z-index: 7;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(8, 8, 12, 0.55);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity var(--dur-base) ease;
}

.mu-export.open { opacity: 1; }

.mu-export__card {
    width: min(440px, 100%);
    max-height: 100%;
    overflow-y: auto;
    border-radius: var(--radius-l, 20px);
    background: rgba(26, 26, 32, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
    color: #fff;
    padding: 20px 22px 22px;
    transform: translateY(10px) scale(0.98);
    transition: transform var(--dur-base) var(--ease-out);
}

.mu-export.open .mu-export__card { transform: none; }

.mu-export__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.mu-export__head .mu-ibtn { color: rgba(255, 255, 255, 0.6); font-size: 1rem; margin: -6px -8px 0 0; }

.mu-export__title { font-size: 1.05rem; font-weight: 700; }

.mu-export__sub {
    margin-top: 3px;
    font-size: 0.76rem;
    color: rgba(255, 255, 255, 0.5);
    font-family: var(--font-data);
    letter-spacing: 0.04em;
}

.mu-export__song {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 18px;
    padding: 10px;
    border-radius: var(--radius-m, 14px);
    background: rgba(255, 255, 255, 0.06);
}

.mu-export__song img {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    object-fit: cover;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.08);
}

.mu-export__song-meta { min-width: 0; }

.mu-export__song-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-export__song-artist {
    margin-top: 2px;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-export__opts { margin-top: 18px; display: flex; flex-direction: column; gap: 12px; }
.mu-export__opts[hidden] { display: none; }

.mu-export__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.mu-export__label { font-size: 0.85rem; color: rgba(255, 255, 255, 0.65); flex-shrink: 0; }

.mu-seg {
    display: inline-flex;
    padding: 3px;
    border-radius: var(--radius-pill, 980px);
    background: rgba(255, 255, 255, 0.08);
}

.mu-seg button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 13px;
    border-radius: var(--radius-pill, 980px);
    cursor: pointer;
    transition: background var(--dur-fast) ease, color var(--dur-fast) ease;
}

.mu-seg button:hover { color: #fff; }
.mu-seg button.on { background: #fff; color: #16161a; }

.mu-export__progress { margin-top: 18px; }
.mu-export__progress[hidden] { display: none; }

.mu-export__msg {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.8);
    font-variant-numeric: tabular-nums;
}

.mu-export__pct { color: rgba(255, 255, 255, 0.55); }

.mu-export__bar {
    margin-top: 8px;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.14);
    overflow: hidden;
}

.mu-export__bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: 3px;
    background: linear-gradient(90deg, #7c6cff, #4cd6ff);
    transition: width 0.4s ease;
}

.mu-export__progress.done .mu-export__bar span { background: #4cd964; }

.mu-export__note {
    margin-top: 14px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.8rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.55);
}

.mu-export__note[hidden] { display: none; }
.mu-export__note i { flex-shrink: 0; font-size: 0.95rem; margin-top: 1px; }
.mu-export__note--ok { color: #7ee2a2; }
.mu-export__note--err { color: #ff8a80; }

.mu-export__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.mu-export__btn {
    flex: 1 1 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 11px 18px;
    border-radius: var(--radius-pill, 980px);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--dur-fast) ease, transform var(--dur-fast) ease, opacity var(--dur-fast) ease;
}

.mu-export__btn:hover { background: rgba(255, 255, 255, 0.16); color: #fff; text-decoration: none; }
.mu-export__btn:active { transform: scale(0.98); }
.mu-export__btn:disabled { opacity: 0.45; cursor: default; transform: none; }
.mu-export__btn[hidden] { display: none; }

.mu-export__btn--primary { background: #fff; color: #16161a; border-color: #fff; }
.mu-export__btn--primary:hover { background: #e9e9ee; color: #16161a; }

.mu-quality {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 5px;
    padding: 2px 8px;
}

.mu-ovl__body {
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(32px, 6vw, 88px);
    padding: 12px clamp(20px, 6vw, 72px);
    min-height: 0;
}

.mu-ovl__left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 26px;
    flex-shrink: 0;
    max-width: 400px;
}

.mu-art {
    width: clamp(240px, 30vw, 380px);
    aspect-ratio: 1;
    border-radius: var(--radius-l, 20px);
    overflow: hidden;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
    background: rgba(255, 255, 255, 0.06);
    transition: transform 0.6s var(--ease-out);
}

.mu-ovl.paused .mu-art { transform: scale(0.94); }

.mu-art img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.mu-meta { text-align: center; max-width: 100%; }

.mu-meta__name {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.2vw, 1.6rem);
    font-weight: 700;
    letter-spacing: -0.01em;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.mu-meta__artist {
    margin-top: 6px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.65);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-meta__fav {
    margin-top: 14px;
    border: none;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.72);
    cursor: pointer;
    padding: 8px 18px;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: var(--radius-pill, 980px);
    transition: all var(--dur-fast) ease;
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.mu-meta__fav i { font-size: 1.02rem; line-height: 1; }

.mu-meta__fav:hover { background: rgba(255, 255, 255, 0.2); color: #fff; }
.mu-meta__fav.on { color: #ff6b5e; background: rgba(231, 76, 60, 0.18); }
.mu-meta__fav.on:hover { background: rgba(231, 76, 60, 0.28); }

/* 歌词 */
.mu-ovl__right {
    flex: 1;
    min-width: 0;
    max-width: 620px;
    height: min(62vh, 640px);
    align-self: center;
}

.mu-lyrics {
    height: 100%;
    overflow-y: auto;
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 86%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 86%, transparent 100%);
}

.mu-lyrics::-webkit-scrollbar { display: none; }

.mu-lyrics__inner { padding: 42% 8px; }

.mu-line {
    padding: 10px 14px;
    border-radius: var(--radius-m, 14px);
    cursor: pointer;
    transition: background var(--dur-fast) ease;
}

.mu-line:hover { background: rgba(255, 255, 255, 0.08); }

.mu-line__text {
    font-size: 1.28rem;
    font-weight: 600;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.42);
    transform-origin: left center;
    transition: color 0.35s ease, transform 0.35s var(--ease-out);
    transform: scale(0.92);
}

.mu-line__trans {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.30);
    margin-top: 3px;
    transition: color 0.35s ease;
}

.mu-line.active .mu-line__text { color: #fff; transform: scale(1); }
.mu-line.active .mu-line__trans { color: rgba(255, 255, 255, 0.6); }

.mu-lyrics__empty {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.45);
    font-size: 1rem;
}

.mu-lyrics__empty i { font-size: 2.4rem; }

/* 控制区 */
.mu-ovl__ctrl {
    position: relative;
    z-index: 3;
    padding: 6px clamp(20px, 8vw, 96px) 30px;
    max-width: 860px;
    width: 100%;
    margin: 0 auto;
}

.mu-bar { user-select: none; }

.mu-bar__rail {
    position: relative;
    height: 5px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.22);
    cursor: pointer;
    touch-action: none;
}

.mu-bar__rail:hover { height: 7px; }

.mu-bar__fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0;
    border-radius: 3px;
    background: #fff;
}

.mu-bar__thumb {
    position: absolute;
    top: 50%;
    left: 0;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
    transform: translate(-50%, -50%) scale(0);
    transition: transform var(--dur-fast) ease;
    pointer-events: none;
}

.mu-bar__rail:hover .mu-bar__thumb,
.mu-bar.dragging .mu-bar__thumb { transform: translate(-50%, -50%) scale(1); }

.mu-bar__times {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 7px;
    font-variant-numeric: tabular-nums;
}

.mu-btns {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(10px, 3vw, 26px);
    margin-top: 10px;
}

.mu-btns .mu-ibtn { color: rgba(255, 255, 255, 0.85); }
.mu-btns .mu-ibtn:hover { color: #fff; }

.mu-btns__mode { font-size: 1.05rem; position: relative; }
.mu-btns__mode.on { color: #fff; }

.mu-btns__mode.on::after {
    content: '';
    position: absolute;
    bottom: 3px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #fff;
}

.mu-btns__skip { font-size: 1.7rem; }

.mu-play {
    width: 64px;
    height: 64px;
    border: none;
    border-radius: 50%;
    background: #fff;
    color: #16161a;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast) ease;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
}

.mu-play:hover { transform: scale(1.06); }
.mu-play:active { transform: scale(0.95); }

.mu-play .mu-spinner {
    width: 26px;
    height: 26px;
    border: 3px solid rgba(22, 22, 26, 0.25);
    border-top-color: #16161a;
    border-radius: 50%;
    animation: muSpin 0.7s linear infinite;
}

.mu-vol {
    display: flex;
    align-items: center;
    gap: 4px;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.mu-vol .mu-ibtn { font-size: 1.1rem; color: rgba(255, 255, 255, 0.75); }

.mu-vol__rail {
    width: 86px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.22);
    cursor: pointer;
    overflow: hidden;
    touch-action: none;
}

.mu-vol__fill { height: 100%; width: 100%; background: #fff; border-radius: 2px; }

/* 播放列表侧板 */
.mu-queue {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 5;
    width: min(360px, 88vw);
    background: rgba(18, 18, 24, 0.78);
    -webkit-backdrop-filter: blur(28px) saturate(1.6);
    backdrop-filter: blur(28px) saturate(1.6);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateX(102%);
    transition: transform var(--dur-slow) var(--ease-out);
    display: flex;
    flex-direction: column;
}

.mu-queue.open { transform: translateX(0); }

.mu-queue__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 14px 12px 20px;
    font-weight: 700;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mu-queue__head .mu-ibtn { color: rgba(255, 255, 255, 0.7); font-size: 1rem; }

/* position: relative 使子项 offsetTop 以列表为基准（openQueue 定位当前曲目用） */
.mu-queue__list { flex: 1; overflow-y: auto; padding: 8px; position: relative; }

.mu-queue__list::-webkit-scrollbar { width: 5px; }
.mu-queue__list::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.2); border-radius: 3px; }

.mu-qrow {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-s, 10px);
    cursor: pointer;
    transition: background var(--dur-fast) ease;
}

.mu-qrow:hover { background: rgba(255, 255, 255, 0.08); }
.mu-qrow.current { background: rgba(255, 255, 255, 0.14); }

.mu-qrow__idx {
    width: 22px;
    text-align: center;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.45);
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
}

.mu-qrow.current .mu-qrow__idx { color: #fff; }

.mu-qrow__art {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.08);
}

.mu-qrow__meta { flex: 1; min-width: 0; }

.mu-qrow__name {
    font-size: 0.88rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.92);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-qrow__artist {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mu-qrow__dur {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.45);
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
}

.mu-qrow__fav {
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    padding: 6px;
    font-size: 0.95rem;
    line-height: 1;
    transition: color var(--dur-fast) ease, transform var(--dur-fast) ease;
    flex-shrink: 0;
}

.mu-qrow__fav:hover { transform: scale(1.12); color: rgba(255, 255, 255, 0.7); }
.mu-qrow__fav.on { color: var(--red, #e74c3c); }

/* toast */
.mu-toast {
    position: fixed;
    top: 76px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2100;
    background: rgba(22, 22, 26, 0.9);
    color: #fff;
    font-size: 0.88rem;
    padding: 10px 20px;
    border-radius: var(--radius-pill, 980px);
    box-shadow: var(--shadow-lift);
    opacity: 0;
    transition: opacity var(--dur-base) ease;
    pointer-events: none;
    max-width: 86vw;
    text-align: center;
}

.mu-toast.show { opacity: 1; }

/* ── 响应式 ── */
@media (max-width: 900px) {
    .mu-row { grid-template-columns: 48px minmax(0, 1fr) 48px 34px; }
    .mu-row__album { display: none; }
    .mu-row__art { width: 48px; height: 48px; }
}

@media (max-width: 768px) {
    .mu-ovl__body {
        flex-direction: column;
        gap: 18px;
        padding: 4px 22px;
        overflow: hidden;
    }

    .mu-ovl__left { gap: 16px; }

    .mu-art { width: min(56vw, 260px); }

    .mu-ovl.lyrics-open .mu-art { display: none; }
    .mu-ovl.lyrics-open .mu-meta { display: none; }

    .mu-ovl__right {
        width: 100%;
        flex: 1;
        min-height: 0;
        height: auto;
        display: none;
    }

    .mu-ovl.lyrics-open .mu-ovl__right { display: block; }

    .mu-line { text-align: center; }
    .mu-line__text { transform-origin: center; font-size: 1.1rem; }

    .mu-meta__name { font-size: 1.15rem; }

    .mu-vol { display: none; }

    .mu-play { width: 58px; height: 58px; font-size: 1.8rem; }

    .mu-ovl__ctrl { padding-bottom: max(22px, env(safe-area-inset-bottom)); }

    .mu-search__btn { padding: 10px 16px; }

    .mu-mini { bottom: 10px; }

    .mu-float {
        right: max(12px, env(safe-area-inset-right));
        width: min(340px, calc(100vw - 24px));
        grid-template-columns: 56px minmax(0, 1fr) auto;
        min-height: 78px;
        gap: 9px;
        padding: 10px 72px 10px 10px;
        border-radius: 20px;
    }

    .mu-float__art { width: 56px; height: 56px; border-radius: 13px; }
    .mu-float__ctrl .mu-ibtn { padding: 6px; }
    .mu-float__ctrl #muFloatPrev { display: none; }

    .mu-orb {
        right: max(14px, env(safe-area-inset-right));
        width: 58px;
        height: 58px;
    }

    .mu-ovl__top { padding: 14px 10px 0; }
    .mu-ovl__top .mu-ibtn { font-size: 1.2rem; padding: 7px; }
    .mu-ovl__top-actions { gap: 0; }

    .mu-dl { top: 58px; right: 10px; }

    .mu-export { padding: 12px; align-items: flex-end; }
    .mu-export__card {
        padding: 18px 18px calc(18px + env(safe-area-inset-bottom));
        border-radius: var(--radius-l, 20px) var(--radius-l, 20px) 0 0;
        width: 100%;
    }
    .mu-export__row { flex-direction: column; align-items: flex-start; gap: 8px; }
    .mu-seg { width: 100%; }
    .mu-seg button { flex: 1; justify-content: center; }
}

/* 移动端点击封面切歌词的提示光标 */
@media (max-width: 768px) {
    .mu-art, .mu-meta { cursor: pointer; }
}

/* 减少动态效果 */
@media (prefers-reduced-motion: reduce) {
    .mu-ovl__bg img { animation: none; }
    .mu-eq span { animation-duration: 2s; }
    .mu-float, .mu-orb, .mu-dl { animation: none; }
    .mu-ovl__exportbtn.busy i { animation: none; opacity: 0.6; }
}

/* 访客限流提示条存在时，把播放器抬高，避免两个全局浮层互相遮挡。 */
body:has(#rl-bar) .mu-mini,
body:has(#rl-bar) .mu-float,
body:has(#rl-bar) .mu-orb {
    bottom: calc(58px + env(safe-area-inset-bottom));
}