/* ===== 主题系统 ===== */
:root {
    color-scheme: dark;
    /* 深色主题（默认） */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #161616;
    --bg-elevated: #1c1c1c;
    --bg-overlay: rgba(10, 10, 10, 0.85);
    --bg-card: #141414;
    --bg-input: #0a0a0a;
    --border-color: #222222;
    --border-color-hover: #333333;
    --text-primary: #e8e6e3;
    --text-secondary: #999999;
    --text-tertiary: #666666;
    --text-muted: #444444;
    --accent-color: #c9a96e;
    --accent-hover: #d4b878;
    --accent-soft: rgba(201, 169, 110, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --shadow-strong: rgba(0, 0, 0, 0.6);
    --error-color: #c44;
    --success-color: #4c8;
    --highlight: #c9a96e;
}

[data-theme="light"] {
    color-scheme: light;
    --bg-primary: #fafaf7;
    --bg-secondary: #f5f4ef;
    --bg-tertiary: #eeece5;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(250, 250, 247, 0.9);
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --border-color: #e5e2d8;
    --border-color-hover: #c9a96e;
    --text-primary: #2a2a2a;
    --text-secondary: #5a5a5a;
    --text-tertiary: #888888;
    --text-muted: #aaaaaa;
    --accent-color: #8b6f3e;
    --accent-hover: #6d5429;
    --accent-soft: rgba(139, 111, 62, 0.08);
    --shadow-color: rgba(0, 0, 0, 0.06);
    --shadow-strong: rgba(0, 0, 0, 0.12);
    --error-color: #c44;
    --success-color: #4a8;
    --highlight: #8b6f3e;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}
img { display: block; max-width: 100%; height: auto; }
::selection { background: var(--accent-color); color: var(--bg-primary); }

/* 屏幕阅读器专用 */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 焦点状态 */
:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}
button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
textarea:focus:not(:focus-visible) {
    outline: none;
}

/* ===== Splash 启动画面 ===== */
.splash {
    position: fixed; inset: 0; z-index: 9999;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: var(--bg-primary);
    transition: opacity 0.5s ease;
}
.splash.fade-out { opacity: 0; pointer-events: none; }
.sp-icon {
    text-align: center; font-size: 2rem;
    color: var(--accent-color); margin-bottom: 16px;
}
.sp-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 2.2rem; font-weight: 300;
    letter-spacing: 8px; text-align: center;
    color: var(--text-primary);
}
.sp-title span { color: var(--accent-color); }
.sp-loading {
    display: flex; gap: 8px; margin-top: 32px;
}
.sp-dot {
    width: 8px; height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: spBounce 1.2s ease-in-out infinite;
}
.sp-dot:nth-child(2) { animation-delay: 0.2s; }
.sp-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes spBounce {
    0%, 100% { transform: translateY(0); opacity: 0.4; }
    50% { transform: translateY(-8px); opacity: 1; }
}

/* ===== 导航栏 ===== */
.nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: var(--bg-overlay);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    transition: opacity 0.4s ease, transform 0.4s ease, background-color 0.4s ease, border-color 0.4s ease;
    opacity: 0; transform: translateY(-100%);
    border-bottom: 1px solid transparent;
}
.nav.show { opacity: 1; transform: translateY(0); }
.nav.scrolled { border-bottom-color: var(--border-color); }

.nv-inner {
    max-width: 1400px; margin: 0 auto;
    padding: 0 20px; display: flex;
    align-items: center; justify-content: space-between; height: 64px;
    padding-top: env(safe-area-inset-top);
    height: calc(64px + env(safe-area-inset-top));
}
@media(min-width:768px) { .nv-inner { padding: env(safe-area-inset-top) 40px 0; } }

.nv-l { display: flex; align-items: center; gap: 10px; }
.nv-mark { color: var(--accent-color); font-size: 0.7rem; opacity: 0.5; }
.nv-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1rem; font-weight: 300;
    letter-spacing: 4px; color: var(--text-primary);
}
.nv-title span { color: var(--accent-color); font-weight: 400; }

.nv-r { display: flex; align-items: center; gap: 8px; }
.nv-cnt { font-size: 0.8rem; color: var(--text-tertiary); margin-right: 4px; }

.nv-btn {
    height: 36px; min-width: 44px;
    border-radius: 18px; border: 1px solid var(--border-color);
    background: transparent; color: var(--text-secondary);
    font-size: 0.9rem; cursor: pointer; padding: 0 14px;
    display: flex; align-items: center; justify-content: center;
    transition: border-color 0.3s ease, color 0.3s ease, background-color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    font-family: inherit;
}

@media(max-width:768px) {
    .nv-btn, .nv-lock, .theme-toggle {
        min-width: 44px; min-height: 44px;
    }
    .nv-r { gap: 4px; }
}
.nv-btn:hover { border-color: var(--accent-color); color: var(--accent-color); }
.nv-btn.unlocked { border-color: var(--accent-color); color: var(--accent-color); }

.nv-out {
    padding: 0 14px; height: 32px;
    border: 1px solid var(--accent-color); border-radius: 4px;
    background: transparent; color: var(--accent-color);
    font-size: 0.7rem; cursor: pointer; font-family: inherit;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    display: none; white-space: nowrap;
}
.nv-out:hover { background: var(--accent-color); color: var(--bg-primary); }

.nv-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
    margin: 0 20px; opacity: 0; transition: opacity 0.5s ease;
}
@media(min-width:768px) { .nv-line { margin: 0 40px; } }
.nav.show .nv-line { opacity: 1; }

/* ===== Hero 英雄区 ===== */
.hero {
    min-height: 80dvh;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
    transition: opacity 0.6s ease, max-height 0.6s ease;
    padding: 80px 24px;
}
.hero.hid { opacity: 0; max-height: 0; overflow: hidden; pointer-events: none; }

.h-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, var(--accent-soft), transparent 50%),
        radial-gradient(ellipse at 80% 70%, var(--accent-soft), transparent 50%),
        var(--bg-primary);
}
[data-theme="light"] .h-bg {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(201, 169, 110, 0.15), transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(201, 169, 110, 0.1), transparent 50%),
        var(--bg-primary);
}

.h-box {
    position: relative; z-index: 1; text-align: center;
    opacity: 0; animation: hf 0.8s ease 0.4s forwards;
    max-width: 560px; padding: 0 24px;
}
.h-icon { font-size: 1.6rem; color: var(--accent-color); opacity: 0.4; margin-bottom: 20px; }
.h-t1 {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 300; letter-spacing: 8px;
    color: var(--text-primary); margin-bottom: 14px;
}
.h-t2 {
    font-size: 0.9rem; color: var(--text-secondary);
    letter-spacing: 1.5px; margin-bottom: 32px; line-height: 1.7;
}
.h-btn {
    padding: 14px 36px; border: 1px solid var(--border-color-hover);
    border-radius: 100px; background: transparent;
    color: var(--text-primary); font-size: 0.85rem;
    cursor: pointer; letter-spacing: 2px;
    transition: border-color 0.3s ease, color 0.3s ease, background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
}
.h-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: var(--accent-soft);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-color);
}
.h-t3 {
    font-size: 0.7rem; color: var(--text-muted);
    letter-spacing: 1.5px; margin-top: 18px;
}
@keyframes hf { to { opacity: 1; } }

/* ===== 影集区域 ===== */
.albums-section {
    max-width: 1400px; margin: 0 auto;
    padding: 32px 20px 16px; display: none;
}
@media(min-width:768px) { .albums-section { padding: 48px 40px 16px; } }
.albums-section.show { display: block; animation: gf 0.6s ease; }

.albums-header {
    display: flex; align-items: baseline; justify-content: space-between;
    margin-bottom: 24px; padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}
.albums-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.1rem; color: var(--text-primary);
    letter-spacing: 3px; font-weight: 400;
}
.albums-title-sub {
    font-size: 0.7rem; color: var(--text-tertiary);
    letter-spacing: 1px; margin-top: 4px;
}
.albums-add-btn {
    padding: 8px 18px; border: 1px solid var(--border-color);
    border-radius: 4px; background: transparent;
    color: var(--text-secondary); font-size: 0.75rem;
    cursor: pointer; font-family: inherit;
    transition: border-color 0.3s ease, color 0.3s ease, background-color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    letter-spacing: 1px;
}
.albums-add-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background: var(--accent-soft);
}

.albums-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.album-card-mini {
    position: relative; border-radius: 8px;
    overflow: hidden; aspect-ratio: 1.5;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow-color);
}
.album-card-mini:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: 0 12px 32px var(--shadow-strong);
}
.album-card-cover {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease;
    opacity: 0.9;
}
.album-card-mini:hover .album-card-cover { transform: scale(1.05); opacity: 1; }
.album-card-overlay {
    position: absolute; bottom: 0; left: 0; right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, transparent 100%);
    padding: 24px 18px 18px;
}
.album-card-name {
    font-size: 0.95rem; color: #fff;
    margin-bottom: 4px; font-weight: 500;
    letter-spacing: 1px;
}
.album-card-count {
    font-size: 0.7rem; color: rgba(255,255,255,0.7);
    letter-spacing: 1px;
}
.album-card-empty {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    height: 100%; color: var(--text-muted);
    background: var(--bg-card);
}
.album-card-empty .empty-icon { font-size: 2rem; margin-bottom: 8px; opacity: 0.3; }
.album-card-empty .empty-text { font-size: 0.8rem; letter-spacing: 1px; }

/* ===== 画廊区域 ===== */
.gal {
    max-width: 1400px; margin: 0 auto;
    padding: 24px 20px; display: none;
}
@media(min-width:768px) { .gal { padding: 24px 40px; } }
.gal.show { display: block; animation: gf 0.6s ease; }
@keyframes gf { from { opacity: 0; } to { opacity: 1; } }

.gal-inner {
    columns: 3;
    column-gap: 20px;
}

@media (min-width: 1400px) {
    .gal-inner { columns: 4; column-gap: 24px; }
}

@media (min-width: 1800px) {
    .gal-inner { columns: 5; column-gap: 28px; }
}

@media (max-width: 768px) {
    .gal-inner { columns: 2; column-gap: 12px; }
}

@media (max-width: 480px) {
    .gal-inner { columns: 1; }
}

.photo {
    position: relative; overflow: hidden;
    cursor: pointer; background: var(--bg-card);
    border-radius: 8px; aspect-ratio: auto;
    opacity: 0; transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow-color);
    border: 1px solid var(--border-color);
    break-inside: avoid; margin-bottom: 20px;
}
.photo.show { opacity: 1; transform: translateY(0); }
.photo img {
    width: 100%; height: auto; object-fit: contain;
    transition: transform 0.6s ease;
    border-radius: 6px;
}
.photo:hover {
    box-shadow: 0 8px 28px var(--shadow-strong);
    border-color: var(--border-color-hover);
    transform: translateY(-2px);
}
.photo:hover img { transform: scale(1.03); }

.ph-over {
    position: absolute; inset: 0;
    background: linear-gradient(0deg, rgba(0,0,0,0.7) 0%, transparent 50%);
    opacity: 0; transition: opacity 0.3s ease;
    display: flex; flex-direction: column;
    justify-content: flex-end; padding: 18px;
}
.photo:hover .ph-over,
.photo.touched .ph-over { opacity: 1; }

.ph-name {
    font-size: 0.85rem; color: #fff;
    white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis; font-weight: 500;
}
.ph-desc {
    font-size: 0.7rem; color: rgba(255,255,255,0.75);
    margin-top: 4px;
    white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis;
}

.photo .ph-del, .photo .ph-eye {
    position: absolute; top: 10px;
    width: 32px; height: 32px; border-radius: 50%;
    background: rgba(0,0,0,0.5); border: none;
    color: #fff; font-size: 0.75rem; cursor: pointer;
    opacity: 0; transition: opacity 0.3s ease, background-color 0.3s ease, transform 0.2s ease;
    display: flex; align-items: center; justify-content: center;
    z-index: 2; backdrop-filter: blur(8px);
}
.photo .ph-eye { left: 10px; }
.photo .ph-del { right: 10px; }
.photo:hover .ph-del, .photo:hover .ph-eye,
.photo.touched .ph-del, .photo.touched .ph-eye { opacity: 1; }

@media (hover: none) {
    .photo .ph-del, .photo .ph-eye { opacity: 0.5; }
}

.photo .ph-del:hover {
    background: rgba(200,60,60,0.7);
    transform: scale(1.1);
}
.photo .ph-eye:hover {
    background: rgba(201,169,110,0.5);
    transform: scale(1.1);
}
.photo.hidden { border: 2px solid var(--error-color); }
.photo.hidden img { opacity: 0.4; }

.gal-end {
    display: flex; align-items: center;
    gap: 16px; justify-content: center;
    margin: 48px 0 32px; opacity: 0;
    transition: opacity 0.8s ease;
    column-span: all;
}
.gal-end.show { opacity: 1; }
.gal-end span:first-child, .gal-end span:last-child {
    width: 60px; height: 1px;
    background: var(--border-color);
}
.gal-end span:nth-child(2) {
    font-size: 0.65rem; letter-spacing: 4px;
    color: var(--text-muted);
}

/* ===== Lightbox 灯箱 ===== */
.lb {
    position: fixed; inset: 0; z-index: 1000;
    display: none; opacity: 0;
    transition: opacity 0.4s ease;
}
.lb.active { display: block; opacity: 1; }
.lb.closing { opacity: 0; }
.lb-bg {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.92);
    backdrop-filter: blur(24px);
    opacity: 0; transition: opacity 0.5s ease;
}
.lb.active .lb-bg { opacity: 1; }

.lb.fullscreen .lb-bg { background: #000; backdrop-filter: none; }
.lb.fullscreen .lb-top, .lb.fullscreen .lb-p, .lb.fullscreen .lb-n {
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s ease;
}
.lb.fullscreen:hover .lb-p, .lb.fullscreen:hover .lb-n {
    opacity: 0.4; pointer-events: auto;
}
.lb.fullscreen:hover .lb-p:hover, .lb.fullscreen:hover .lb-n:hover {
    opacity: 1 !important;
}
.lb.fullscreen .lb-top {
    transition: opacity 0.3s ease;
}
.lb.fullscreen:hover .lb-top {
    opacity: 0.8; pointer-events: auto;
}
.lb.fullscreen .lb-side { display: none; }
.lb.fullscreen .lb-main { padding: 0; }
.lb.fullscreen .lb-img { max-width: 100vw; z-index: 5; }
.lb.fullscreen .lb-img img {
    max-height: 100vh; box-shadow: none; cursor: zoom-out;
}

.lb-top {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1002;
    display: flex; align-items: center;
    justify-content: space-between;
    padding: 20px; opacity: 0; transition: opacity 0.4s ease;
}
@media(min-width:768px) { .lb-top { padding: 24px 32px; } }
.lb.active .lb-top { opacity: 1; }
.lb-x {
    background: rgba(255,255,255,0.1);
    border: none; color: #fff;
    font-size: 1.1rem; cursor: pointer;
    padding: 8px 12px; line-height: 1;
    border-radius: 4px; backdrop-filter: blur(8px);
    transition: background-color 0.2s ease;
}
.lb-x:hover { background: rgba(255,255,255,0.2); }
.lb-cnt {
    font-size: 0.7rem; letter-spacing: 2px;
    color: rgba(255,255,255,0.7);
    background: rgba(0,0,0,0.4);
    padding: 6px 14px; border-radius: 100px;
    backdrop-filter: blur(8px);
}

.lb-p, .lb-n {
    position: absolute; top: 50%;
    transform: translateY(-50%);
    background: transparent; border: none;
    color: rgba(255,255,255,0.6); font-size: 1.6rem;
    cursor: pointer; padding: 10px;
    opacity: 0; transition: opacity 0.3s ease, color 0.3s ease;
    z-index: 10; -webkit-tap-highlight-color: transparent;
    border-radius: 0;
}
@media(min-width:768px) { .lb-p, .lb-n { padding: 12px 8px; font-size: 1.8rem; } }
.lb.active .lb-p, .lb.active .lb-n { opacity: 0.5; }
.lb-p:hover, .lb-n:hover { opacity: 1 !important; background: rgba(0,0,0,0.3); color: #fff; }
.lb-p { left: 8px; } .lb-n { right: 340px; }
@media(min-width:768px) { .lb-p { left: 16px; } .lb-n { right: 348px; } }
@media(hover:none) { .lb.active .lb-p, .lb.active .lb-n { opacity: 0.4; } }
.lb-p:active, .lb-n:active { opacity: 1 !important; }

.lb-main {
    position: relative; height: 100vh;
    display: flex; align-items: center;
    padding: 60px 50px; transition: padding 0.4s ease;
}
.lb-img {
    flex: 1; display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.4s ease 0.1s, transform 0.4s ease;
    cursor: zoom-in;
}
.lb.active .lb-img { opacity: 1; }
.lb-img img {
    max-width: 100%; max-height: 82vh;
    object-fit: contain; box-shadow: 0 12px 40px rgba(0,0,0,0.5);
    transition: max-height 0.4s ease;
    border-radius: 4px;
}

.lb-side {
    width: 300px; margin-left: 32px;
    flex-shrink: 0; max-height: 82vh;
    overflow-y: auto; padding: 8px 0;
    opacity: 0; transition: opacity 0.4s ease 0.2s;
}
.lb.active .lb-side { opacity: 1; }
.lb-sn {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.2rem; font-weight: 300;
    color: #fff; margin-bottom: 8px;
}
.lb-sd {
    font-size: 0.8rem; color: rgba(255,255,255,0.6);
    line-height: 1.6; margin-bottom: 14px;
}
.lb-toggle {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 14px; border: none;
    background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.7);
    font-size: 0.7rem; cursor: pointer;
    transition: color 0.3s ease, background-color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    border-radius: 4px; margin-bottom: 16px;
    font-family: inherit;
}
.lb-toggle:hover { color: #fff; background: rgba(255,255,255,0.2); }
.lb-params { max-height: 0; overflow: hidden; opacity: 0; transition: max-height 0.4s ease, opacity 0.3s ease; }
.lb-params.show { max-height: 600px; opacity: 1; }
.lb-sh {
    font-size: 0.6rem; text-transform: uppercase;
    letter-spacing: 2px; color: rgba(255,255,255,0.4);
    margin-bottom: 8px; margin-top: 14px;
}
.lb-sg { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 6px; }
.lb-sg.wide { grid-template-columns: 1fr; margin-bottom: 4px; }
.lb-si {
    background: rgba(255,255,255,0.05);
    padding: 8px 12px; border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.08);
}
.lb-sl {
    font-size: 0.55rem; text-transform: uppercase;
    letter-spacing: 1.5px; color: rgba(255,255,255,0.4);
    margin-bottom: 2px;
}
.lb-sv { font-size: 0.85rem; color: #fff; }
.lb-sv.accent { color: var(--accent-color); }
.lb-sv.empty { color: rgba(255,255,255,0.25); }

.lb-del, .lb-edit {
    display: inline-flex; align-items: center; gap: 6px;
    margin-top: 16px; padding: 8px 14px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 4px; background: transparent;
    color: rgba(255,255,255,0.7);
    font-size: 0.75rem; cursor: pointer;
    transition: border-color 0.3s ease, color 0.3s ease;
    font-family: inherit;
}
.lb-edit { margin-right: 8px; }
.lb-edit:hover { border-color: var(--accent-color); color: var(--accent-color); }
.lb-del:hover { border-color: #c44; color: #c44; }

.lb-loading {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 32px; height: 32px;
    border: 2px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: lbSpin 0.6s linear infinite;
    z-index: 1; pointer-events: none;
}
@keyframes lbSpin { to { transform: translate(-50%, -50%) rotate(360deg); } }

@media(max-width:900px) {
    .lb-main { flex-direction: row; padding: 60px 0 0; }
    .lb-img { flex: none; width: 100%; max-height: 85vh; }
    .lb-img img { max-width: 100vw; max-height: 85vh; }
    .lb-side { display: none; }
    .lb-p, .lb-n { width: 44px; height: 44px; font-size: 1.4rem; padding: 6px; top: 50%; transform: translateY(-50%); }
}

.lb-info-toggle {
    display: none;
    position: fixed; bottom: 20px; left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    padding: 8px 16px;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    color: rgba(255,255,255,0.8);
    font-size: 0.75rem;
    cursor: pointer;
    transition: background-color 0.3s;
}
.lb-info-toggle:hover { background: rgba(0,0,0,0.9); }

.lb-bottom-sheet {
    display: none;
    position: fixed; bottom: 0; left: 0; right: 0;
    z-index: 998;
    background: rgba(10,10,10,0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px 16px 0 0;
    padding: 16px 20px calc(20px + env(safe-area-inset-bottom));
    max-height: 60vh;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}
.lb-bottom-sheet.show { display: block; transform: translateY(0); }

.lb-bs-close {
    position: absolute; top: 12px; right: 16px;
    background: transparent; border: none;
    color: rgba(255,255,255,0.5);
    font-size: 1rem; cursor: pointer;
    padding: 4px;
}
.lb-bs-close:hover { color: rgba(255,255,255,0.8); }

@media(max-width:900px) {
    .lb-info-toggle { display: block; }
}

/* ===== 上传模态框 ===== */
.up {
    position: fixed; inset: 0; z-index: 900;
    display: none; align-items: center; justify-content: center;
    padding: 16px;
}
.up.active { display: flex; background: var(--bg-overlay); backdrop-filter: blur(20px); }
.up-modal {
    position: relative;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 32px 28px;
    max-width: 420px; width: 100%;
    max-height: calc(90vh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    overflow-y: auto;
    box-shadow: 0 20px 60px var(--shadow-strong);
}
.up-x {
    position: absolute; top: 12px; right: 12px;
    background: transparent; border: none;
    color: var(--text-tertiary); font-size: 1rem;
    cursor: pointer; padding: 8px; line-height: 1;
    border-radius: 4px; transition: color 0.3s ease, background-color 0.3s ease;
}
.up-x:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.up-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px; padding: 32px 20px;
    text-align: center; cursor: pointer;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}
.up-zone:hover, .up-zone.dragover {
    border-color: var(--accent-color);
    background: var(--accent-soft);
}
.up-icon { font-size: 1.6rem; color: var(--accent-color); margin-bottom: 12px; opacity: 0.6; }
.up-t1 { font-size: 0.9rem; color: var(--text-primary); margin-bottom: 4px; }
.up-t2 { font-size: 0.75rem; color: var(--text-tertiary); margin-bottom: 12px; }
.up-ft { display: flex; gap: 6px; justify-content: center; }
.up-ft span {
    font-size: 0.6rem; color: var(--text-muted);
    padding: 3px 10px; border: 1px solid var(--border-color);
    border-radius: 2px;
}
#upFi { display: none; }
.up-in, .up-ta {
    width: 100%; margin-top: 14px;
    padding: 12px 14px;
    background: var(--bg-input); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.85rem; font-family: inherit;
    resize: none; outline: none; transition: border-color 0.3s ease;
}
.up-in:focus, .up-ta:focus { border-color: var(--accent-color); }
.up-in::placeholder, .up-ta::placeholder { color: var(--text-muted); }
.up-preview {
    margin-top: 14px; border-radius: 6px;
    overflow: hidden; background: var(--bg-input);
    border: 1px solid var(--border-color); display: none;
}
.up-preview.show { display: block; }
.up-preview img { width: 100%; max-height: 220px; object-fit: cover; }
.up-pre-info {
    padding: 10px 14px; font-size: 0.75rem;
    color: var(--text-tertiary);
    border-top: 1px solid var(--border-color);
}
.up-btn {
    width: 100%; margin-top: 16px;
    padding: 13px; border: 1px solid var(--accent-color);
    border-radius: 6px; background: transparent;
    color: var(--accent-color); font-size: 0.9rem;
    cursor: pointer; font-family: inherit;
    transition: background-color 0.3s ease, color 0.3s ease, opacity 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    letter-spacing: 1px;
}
.up-btn:hover { background: var(--accent-color); color: var(--bg-primary); }
.up-btn:disabled { opacity: 0.4; cursor: not-allowed; border-color: var(--border-color); color: var(--text-muted); background: transparent; }
.up-pg { display: none; margin-top: 14px; }
.up-pg.show { display: block; }
.up-bar { height: 3px; background: var(--border-color); border-radius: 2px; overflow: hidden; margin-bottom: 8px; }
.up-fill { height: 100%; background: var(--accent-color); width: 0%; transition: width 0.3s ease; border-radius: 2px; }
.up-st { font-size: 0.75rem; color: var(--text-tertiary); text-align: center; }

/* ===== 管理员登录模态框 ===== */
.ad-modal {
    position: fixed; inset: 0; z-index: 2000;
    display: none; align-items: center; justify-content: center;
    padding: 16px;
    background: var(--bg-overlay); backdrop-filter: blur(16px);
    opacity: 0; transition: opacity 0.3s ease;
}
.ad-modal.show { display: flex !important; opacity: 1; animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.ad-card {
    position: relative;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 40px 32px;
    text-align: center; max-width: 360px; width: 100%;
    box-shadow: 0 20px 60px var(--shadow-strong);
}
.ad-x {
    position: absolute; top: 12px; right: 12px;
    background: transparent; border: none;
    color: var(--text-tertiary); font-size: 1rem;
    cursor: pointer; padding: 8px; line-height: 1;
    border-radius: 4px; transition: color 0.3s ease, background-color 0.3s ease;
}
.ad-x:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.ad-icon { font-size: 1.8rem; color: var(--accent-color); opacity: 0.4; margin-bottom: 14px; }
.ad-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.3rem; font-weight: 300;
    color: var(--text-primary); margin-bottom: 8px;
    letter-spacing: 2px;
}
.ad-hint { font-size: 0.75rem; color: var(--text-tertiary); margin-bottom: 24px; letter-spacing: 1px; }
.ad-pw {
    width: 100%; padding: 13px 16px;
    background: var(--bg-input); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.9rem; text-align: center; outline: none;
    font-family: inherit; transition: border-color 0.3s ease;
}
.ad-pw:focus { border-color: var(--accent-color); }
.ad-btn {
    width: 100%; margin-top: 16px;
    padding: 13px; border: 1px solid var(--accent-color);
    border-radius: 6px; background: transparent;
    color: var(--accent-color); font-size: 0.9rem;
    cursor: pointer; font-family: inherit;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    letter-spacing: 2px;
}
.ad-btn:hover { background: var(--accent-color); color: var(--bg-primary); }
.ad-err { font-size: 0.75rem; color: var(--error-color); margin-top: 10px; min-height: 20px; }

/* ===== 编辑模态框 ===== */
.edit-modal {
    position: fixed; inset: 0; z-index: 1500;
    display: none; align-items: center; justify-content: center;
    padding: 16px;
    background: var(--bg-overlay); backdrop-filter: blur(16px);
    opacity: 0; transition: opacity 0.3s ease;
}
.edit-modal.show { display: flex !important; opacity: 1; animation: fadeIn 0.3s ease; }
.edit-card {
    position: relative;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 32px 28px;
    max-width: 500px; width: 100%; max-height: calc(90vh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    overflow-y: auto;
    box-shadow: 0 20px 60px var(--shadow-strong);
}
.edit-x {
    position: absolute; top: 12px; right: 12px;
    background: transparent; border: none;
    color: var(--text-tertiary); font-size: 1rem;
    cursor: pointer; padding: 8px; line-height: 1;
    border-radius: 4px; transition: color 0.3s ease, background-color 0.3s ease;
}
.edit-x:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.edit-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.2rem; font-weight: 300;
    color: var(--text-primary); margin-bottom: 20px;
    text-align: center; letter-spacing: 2px;
}
.edit-section {
    font-size: 0.65rem; text-transform: uppercase;
    letter-spacing: 2px; color: var(--text-tertiary);
    margin: 18px 0 10px; font-weight: 500;
}
.edit-field { margin-bottom: 12px; }
.edit-field label {
    display: block; font-size: 0.7rem;
    color: var(--text-secondary); margin-bottom: 6px;
    letter-spacing: 1px;
}
.edit-in {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.85rem; outline: none; font-family: inherit;
    transition: border-color 0.3s ease;
}
.edit-in:focus { border-color: var(--accent-color); }
.edit-ta {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.85rem; outline: none; font-family: inherit;
    transition: border-color 0.3s ease; resize: vertical; min-height: 70px;
}
.edit-ta:focus { border-color: var(--accent-color); }
.edit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.edit-save {
    width: 100%; margin-top: 20px;
    padding: 13px; border: 1px solid var(--accent-color);
    border-radius: 6px; background: transparent;
    color: var(--accent-color); font-size: 0.9rem;
    cursor: pointer; font-family: inherit;
    transition: background-color 0.3s ease, color 0.3s ease, opacity 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    letter-spacing: 1px;
}
.edit-save:hover { background: var(--accent-color); color: var(--bg-primary); }
.edit-save:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== 影集管理模态框 ===== */
.album-modal {
    position: fixed; inset: 0; z-index: 1500;
    display: none; align-items: center; justify-content: center;
    padding: 16px;
    background: var(--bg-overlay); backdrop-filter: blur(16px);
    opacity: 0; transition: opacity 0.3s ease;
}
.album-modal.show { display: flex !important; opacity: 1; }
.album-card {
    position: relative;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 32px 28px;
    max-width: 540px; width: 100%; max-height: calc(80vh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    overflow-y: auto; box-shadow: 0 20px 60px var(--shadow-strong);
}
.album-x {
    position: absolute; top: 12px; right: 12px;
    background: transparent; border: none;
    color: var(--text-tertiary); font-size: 1rem;
    cursor: pointer; padding: 8px; line-height: 1;
    border-radius: 4px; transition: color 0.3s ease, background-color 0.3s ease;
}
.album-x:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.album-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.2rem; font-weight: 300;
    color: var(--text-primary); margin-bottom: 20px;
    text-align: center; letter-spacing: 2px;
}
.album-list { margin-bottom: 18px; }
.album-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px; margin-bottom: 10px;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}
.album-item:hover { border-color: var(--accent-color); background: var(--accent-soft); }
.album-item-name { font-size: 0.9rem; color: var(--text-primary); font-weight: 500; }
.album-item-count { font-size: 0.7rem; color: var(--text-tertiary); margin-top: 2px; }
.album-item-actions { display: flex; gap: 8px; }
.album-action-btn {
    padding: 6px 12px; background: transparent;
    border: 1px solid var(--border-color); border-radius: 4px;
    color: var(--text-secondary); font-size: 0.7rem;
    cursor: pointer; transition: border-color 0.3s ease, color 0.3s ease;
    font-family: inherit;
    letter-spacing: 1px;
}
.album-action-btn:hover { border-color: var(--accent-color); color: var(--accent-color); }
.album-action-btn.del:hover { border-color: var(--error-color); color: var(--error-color); }
.album-add {
    width: 100%; padding: 14px;
    border: 1px dashed var(--border-color);
    border-radius: 8px; background: transparent;
    color: var(--text-tertiary); font-size: 0.9rem;
    cursor: pointer; font-family: inherit;
    transition: border-color 0.3s ease, color 0.3s ease, background-color 0.3s ease;
    letter-spacing: 1px;
}
.album-add:hover { border-color: var(--accent-color); color: var(--accent-color); background: var(--accent-soft); }

/* ===== 影集编辑模态框 ===== */
.album-edit-modal {
    position: fixed; inset: 0; z-index: 1600;
    display: none; align-items: center; justify-content: center;
    padding: 16px;
    background: var(--bg-overlay); backdrop-filter: blur(16px);
    opacity: 0; transition: opacity 0.3s ease;
}
.album-edit-modal.show { display: flex !important; opacity: 1; }
.album-edit-card {
    position: relative;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 32px 28px;
    max-width: 640px; width: 100%; max-height: calc(88vh - env(safe-area-inset-top) - env(safe-area-inset-bottom));
    overflow-y: auto;
    box-shadow: 0 20px 60px var(--shadow-strong);
}
.album-edit-x {
    position: absolute; top: 12px; right: 12px;
    background: transparent; border: none;
    color: var(--text-tertiary); font-size: 1rem;
    cursor: pointer; padding: 8px; line-height: 1;
    border-radius: 4px; transition: color 0.3s ease, background-color 0.3s ease;
}
.album-edit-x:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.album-edit-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.2rem; font-weight: 300;
    color: var(--text-primary); margin-bottom: 20px;
    text-align: center; letter-spacing: 2px;
}
.album-edit-field { margin-bottom: 14px; }
.album-edit-field label {
    display: block; font-size: 0.7rem;
    color: var(--text-secondary); margin-bottom: 6px;
    letter-spacing: 1px;
}
.album-edit-in {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.85rem; outline: none; font-family: inherit;
    transition: border-color 0.3s ease;
}
.album-edit-in:focus { border-color: var(--accent-color); }
.album-edit-ta {
    width: 100%; padding: 10px 12px;
    background: var(--bg-input); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.85rem; outline: none; font-family: inherit;
    transition: border-color 0.3s ease; resize: vertical; min-height: 70px;
}
.album-edit-ta:focus { border-color: var(--accent-color); }
.album-edit-photos { margin-top: 20px; }
.album-edit-photos-title {
    font-size: 0.65rem; text-transform: uppercase;
    letter-spacing: 2px; color: var(--text-tertiary);
    font-weight: 500;
}
.album-edit-photos-header {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 12px; flex-wrap: wrap;
}
.album-edit-photos-hint {
    font-size: 0.65rem; color: var(--text-muted);
    opacity: 0.7; letter-spacing: 0.5px;
}
.album-edit-photos-count {
    font-size: 0.65rem; color: var(--accent-color);
    margin-left: auto; font-weight: 500;
}
.album-edit-photos-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px; max-height: 240px; overflow-y: auto;
    padding: 4px; border: 1px solid var(--border-color);
    border-radius: 8px; background: var(--bg-input);
}
.album-edit-photo-item {
    position: relative; aspect-ratio: 1; border-radius: 4px;
    overflow: hidden; border: 2px solid transparent;
    cursor: pointer; transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.album-edit-photo-item:hover { transform: scale(1.05); }
.album-edit-photo-item.selected { border-color: var(--accent-color); box-shadow: 0 0 0 2px var(--accent-soft); }
.album-edit-photo-item img { width: 100%; height: 100%; object-fit: cover; }
.album-edit-photo-check {
    position: absolute; top: 4px; right: 4px;
    width: 20px; height: 20px;
    background: rgba(0,0,0,0.7); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.65rem; color: var(--accent-color);
    opacity: 0; transition: opacity 0.2s ease;
}
.album-edit-photo-item.selected .album-edit-photo-check { opacity: 1; }
.album-edit-save {
    width: 100%; margin-top: 20px;
    padding: 13px; border: 1px solid var(--accent-color);
    border-radius: 6px; background: transparent;
    color: var(--accent-color); font-size: 0.9rem;
    cursor: pointer; font-family: inherit;
    transition: background-color 0.3s ease, color 0.3s ease, opacity 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    letter-spacing: 1px;
}
.album-edit-save:hover { background: var(--accent-color); color: var(--bg-primary); }
.album-edit-save:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== Toast 提示 ===== */
.tt {
    position: fixed; bottom: 32px; left: 50%;
    transform: translateX(-50%); z-index: 2000;
    pointer-events: none;
}
.tt-in {
    padding: 10px 24px;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 6px; color: var(--text-primary);
    font-size: 0.8rem; opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    box-shadow: 0 4px 16px var(--shadow-color);
}
.tt-in.show { opacity: 1; transform: translateY(0); }

/* ===== Confirm Dialog 确认对话框 ===== */
.cd {
    position: fixed; inset: 0; z-index: 2500;
    display: flex; align-items: center; justify-content: center;
    padding: 16px; opacity: 0; pointer-events: none;
    transition: opacity 0.3s ease;
}
.cd.show { opacity: 1; pointer-events: auto; }
.cd-bg {
    position: absolute; inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(16px);
}
.cd-card {
    position: relative;
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: 12px; padding: 32px 28px;
    text-align: center; max-width: 360px; width: 100%;
    transform: scale(0.95); transition: transform 0.3s ease;
    box-shadow: 0 20px 60px var(--shadow-strong);
}
.cd.show .cd-card { transform: scale(1); }
.cd-title {
    font-family: Georgia, 'Noto Serif CJK SC', 'Source Han Serif SC', 'SimSun', serif;
    font-size: 1.1rem; font-weight: 300;
    color: var(--text-primary); margin-bottom: 10px;
    letter-spacing: 2px;
}
.cd-msg {
    font-size: 0.85rem; color: var(--text-secondary);
    line-height: 1.6; margin-bottom: 24px;
}
.cd-actions { display: flex; gap: 12px; justify-content: center; }
.cd-cancel, .cd-ok {
    flex: 1; padding: 12px; border-radius: 6px;
    font-size: 0.85rem; cursor: pointer; font-family: inherit;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.cd-cancel {
    border: 1px solid var(--border-color);
    background: transparent; color: var(--text-secondary);
}
.cd-cancel:hover { border-color: var(--accent-color); color: var(--accent-color); }
.cd-ok {
    border: 1px solid var(--accent-color);
    background: transparent; color: var(--accent-color);
}
.cd-ok:hover { background: var(--accent-color); color: var(--bg-primary); }

/* ===== 按钮通用 ===== */
button {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

/* ===== 响应式调整 ===== */
@media (max-width: 640px) {
    .nv-inner { padding: 0 16px; height: 56px; }
    .nv-line { margin: 0 16px; }
    .albums-section, .gal { padding-left: 16px; padding-right: 16px; }
    .gal-inner, .albums-grid { gap: 12px; }
    .photo { border-radius: 4px; }
    .nv-btn { height: 32px; min-width: 32px; padding: 0 10px; font-size: 0.8rem; }
}

/* ===== 平滑滚动 ===== */
@media (prefers-reduced-motion: no-preference) {
    html { scroll-behavior: smooth; }
}

/* ===== 全局滚动条样式 ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== 深色模式下的默认背景色 ===== */
html {
    background-color: var(--bg-primary);
}

/* ===== 影集空状态改进 ===== */
.album-card-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    background: var(--bg-card);
    gap: 8px;
}
.album-card-empty .empty-icon {
    font-size: 2rem;
    opacity: 0.3;
}
.album-card-empty .empty-text {
    font-size: 0.8rem;
    letter-spacing: 1px;
}
.album-card-empty .empty-hint {
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0.6;
    letter-spacing: 0.5px;
}

/* ===== 相册瀑布流移动端优化 ===== */
@media (max-width: 640px) {
    .gal-inner {
        column-count: 2;
    }
    .photo {
        margin-bottom: 12px;
    }
    .albums-section {
        padding: 24px 12px 12px;
    }
    .albums-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    .lb-main {
        flex-direction: column;
        padding: 50px 0 0;
        justify-content: flex-start;
    }
    .lb-img {
        flex: none;
        width: 100%;
        max-height: 40vh;
        overflow: hidden;
    }
    .lb-img img {
        max-width: 100%;
        max-height: 40vh;
    }
    .lb-side {
        width: 100%;
        margin-left: 0;
        padding: 12px 16px 70px;
        max-height: none;
    }
    .lb-p, .lb-n {
        font-size: 1.2rem;
        padding: 12px 6px;
        top: 20vh;
    }
}

.pwa-banner {
    position: fixed; bottom: 24px; left: 50%;
    transform: translateX(-50%);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}
.pwa-banner.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.pwa-banner-inner {
    display: flex; align-items: center; gap: 10px;
    background: rgba(20,20,20,0.95);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 12px 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.pwa-icon { font-size: 1.2rem; }
.pwa-text {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.8);
    white-space: nowrap;
}
.pwa-install-btn {
    background: #c9a96e;
    color: #0a0a0a;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}
.pwa-install-btn:hover { background: #d4b578; }
.pwa-install-btn:active { transform: scale(0.96); }
.pwa-close-btn {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 4px;
    transition: color 0.3s;
}
.pwa-close-btn:hover { color: rgba(255,255,255,0.8); }

@media(max-width:768px) {
    .pwa-banner { bottom: 16px; }
    .pwa-banner-inner { padding: 10px 16px; }
    .pwa-text { font-size: 0.75rem; }
    .pwa-install-btn { padding: 6px 12px; font-size: 0.7rem; }
}

.pwa-guide {
    position: fixed; inset: 0; z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.pwa-guide.show { opacity: 1; visibility: visible; }
.pwa-guide-bg {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
}
.pwa-guide-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    max-width: 320px;
    width: 90%;
}
.pwa-guide-icon { font-size: 3rem; margin-bottom: 16px; }
.pwa-guide-card h3 {
    font-family: Georgia, serif;
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 300;
}
.pwa-guide-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}
.pwa-guide-close {
    background: var(--accent-color);
    color: var(--bg-primary);
    border: none;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}
.pwa-guide-close:hover { background: var(--accent-soft); }