:root {
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --secondary: #FF9800;
    --secondary-dark: #F57C00;
    --success: #4CAF50;
    --danger: #f44336;
    --text-main: #1a1a2e;
    --text-muted: #5a5a72;
    --bg-body: #f0f4f8;
    --bg-card: rgba(255, 255, 255, 0.78);
    --bg-card-solid: #ffffff;
    --border: rgba(0, 0, 0, 0.08);
    --shadow: rgba(31, 38, 135, 0.12);
    --shadow-lg: rgba(31, 38, 135, 0.22);
    --radius: 18px;
    --radius-sm: 12px;
    --transition: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    --font: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body.dark-mode {
    --primary: #64b5f6;
    --primary-dark: #42a5f5;
    --secondary: #ffb74d;
    --secondary-dark: #ffa726;
    --text-main: #f0f0f5;
    --text-muted: #a0a0b8;
    --bg-body: #0f111a;
    --bg-card: rgba(30, 33, 48, 0.72);
    --bg-card-solid: #1e2130;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: rgba(0, 0, 0, 0.35);
    --shadow-lg: rgba(0, 0, 0, 0.55);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    height: -webkit-fill-available;
}

body {
    font-family: var(--font);
    background-color: var(--bg-body);
    color: var(--text-main);
    height: 100vh;
    height: 100dvh;
    height: -webkit-fill-available;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color 0.6s ease, color 0.6s ease;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    touch-action: pan-y;
}

button, select, input, a {
    touch-action: manipulation;
}

button, select {
    cursor: pointer;
}

/* ---------- 动态背景 ---------- */
.bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.55;
    transition: opacity 0.6s ease;
}

body.dark-mode .bg-canvas {
    opacity: 0.35;
}

.ambient-light {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
    animation: floatLight 20s ease-in-out infinite alternate;
}

.ambient-light:first-of-type {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(33, 150, 243, 0.35), transparent 70%);
    top: -150px;
    right: -150px;
}

.ambient-light.alt {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 152, 0, 0.3), transparent 70%);
    bottom: -100px;
    left: -100px;
    animation-delay: -8s;
    animation-duration: 25s;
}

body.dark-mode .ambient-light:first-of-type {
    background: radial-gradient(circle, rgba(100, 181, 246, 0.22), transparent 70%);
}

body.dark-mode .ambient-light.alt {
    background: radial-gradient(circle, rgba(255, 183, 77, 0.18), transparent 70%);
}

@keyframes floatLight {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, 60px) scale(1.1); }
}

/* ---------- 顶部工具栏 ---------- */
.app-toolbar {
    position: relative;
    z-index: 30;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 30px var(--shadow);
    transition: background 0.6s ease, border-color 0.6s ease;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toolbar-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.45);
    color: var(--text-main);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

body.dark-mode .toolbar-btn {
    background: rgba(255, 255, 255, 0.08);
}

.toolbar-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px var(--shadow);
    background: rgba(255, 255, 255, 0.7);
}

body.dark-mode .toolbar-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.toolbar-btn.icon-btn {
    width: 38px;
    height: 38px;
    padding: 0;
}

.brand-mini {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 16px;
    color: var(--text-main);
    white-space: nowrap;
}

.brand-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: conic-gradient(from 180deg, var(--primary), var(--secondary), var(--primary));
    animation: spin 6s linear infinite;
    box-shadow: 0 0 12px rgba(33, 150, 243, 0.4);
}

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

.theme-toggle {
    width: 42px;
    height: 38px;
    padding: 0;
    position: relative;
}

.theme-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    opacity: 0;
    transition: all 0.35s ease;
}

body:not(.dark-mode) .theme-icon.sun,
body.dark-mode .theme-icon.moon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.lang-select-wrap {
    position: relative;
}

.lang-select-wrap::after {
    content: '⌄';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-60%);
    pointer-events: none;
    color: var(--text-muted);
    font-size: 16px;
}

.language-select {
    appearance: none;
    -webkit-appearance: none;
    padding: 8px 30px 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.45);
    color: var(--text-main);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.25s ease;
}

body.dark-mode .language-select {
    background: rgba(0, 0, 0, 0.35);
    color: var(--text-main);
    border-color: rgba(255, 255, 255, 0.15);
}

.language-select:hover,
.language-select:focus {
    background: rgba(255, 255, 255, 0.7);
    outline: none;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.2);
}

body.dark-mode .language-select:hover,
body.dark-mode .language-select:focus {
    background: rgba(0, 0, 0, 0.55);
    border-color: rgba(255, 255, 255, 0.25);
}

.download-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark)) !important;
    color: #fff !important;
    border: none !important;
    font-weight: 600;
}

.download-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
    box-shadow: 0 8px 22px rgba(33, 150, 243, 0.35);
}

/* ---------- 主体布局 ---------- */
.app-body {
    flex: 1;
    position: relative;
    z-index: 5;
    display: flex;
    overflow: hidden;
    min-height: 0;
}

.content-area {
    position: absolute;
    inset: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 24px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

/* 自定义滚动条 */
.content-area::-webkit-scrollbar,
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.content-area::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.content-area::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb {
    background: rgba(150, 150, 170, 0.35);
    border-radius: 4px;
}

.content-area::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(150, 150, 170, 0.55);
}

/* ---------- 遮罩层 ---------- */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.08);
    z-index: 25;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

body.dark-mode .overlay {
    background: rgba(0, 0, 0, 0.2);
}

.overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* ---------- 侧边栏 ---------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 320px;
    max-width: 85vw;
    background: var(--bg-card);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border-right: 1px solid var(--border);
    box-shadow: 8px 0 40px var(--shadow-lg);
    z-index: 40;
    transform: translateX(-110%);
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    pointer-events: auto;
    -webkit-overflow-scrolling: touch;
}

.sidebar.visible {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
    font-size: 18px;
    font-weight: 700;
}

.close-sidebar {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.close-sidebar:hover {
    background: var(--primary);
    color: #fff;
    transform: rotate(90deg);
}

.category-container {
    flex: 1;
    overflow-y: auto;
    padding: 10px 16px 20px;
    -webkit-overflow-scrolling: touch;
    min-height: 0;
}

.category-group {
    margin-bottom: 10px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.35);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

body.dark-mode .category-group {
    background: rgba(255, 255, 255, 0.04);
}

.category-group:hover {
    background: rgba(255, 255, 255, 0.55);
    box-shadow: 0 4px 14px var(--shadow);
}

body.dark-mode .category-group:hover {
    background: rgba(255, 255, 255, 0.08);
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 16px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.25s ease;
    user-select: none;
    position: relative;
    z-index: 1;
}

.category-item:hover {
    color: var(--primary);
}

.category-item::after {
    content: '›';
    font-size: 22px;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.category-group.open .category-item::after {
    transform: rotate(90deg);
    color: var(--primary);
}

.subcategory-list {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.category-group.open .subcategory-list {
    max-height: 1000px;
}

.subcategory-item {
    padding: 10px 16px 10px 28px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-muted);
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
    position: relative;
    z-index: 1;
}

.subcategory-item::before {
    content: '';
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.5;
}

.subcategory-item:hover {
    color: var(--primary);
    background: rgba(33, 150, 243, 0.08);
    border-left-color: var(--primary);
    padding-left: 32px;
}

.subcategory-item.no-match {
    display: none;
}

/* ---------- 首页英雄区 ---------- */
.hero-section {
    min-height: calc(100vh - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    opacity: 1;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.hero-section.hidden {
    display: none;
}

.hero-content {
    width: 100%;
    max-width: 760px;
    text-align: center;
    animation: fadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.12), rgba(255, 152, 0, 0.12));
    border: 1px solid var(--border);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 24px;
    animation: pulseBadge 3s ease-in-out infinite;
}

@keyframes pulseBadge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(33, 150, 243, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(33, 150, 243, 0); }
}

.hero-title {
    font-size: clamp(32px, 6vw, 56px);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--text-main), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    min-height: 1.2em;
}

body.dark-mode .hero-title {
    background: linear-gradient(135deg, #fff, var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-muted);
    margin-bottom: 38px;
    animation: fadeUp 0.8s 0.15s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* ---------- 搜索框 ---------- */
.search-box {
    position: relative;
    width: 100%;
    max-width: 640px;
    margin: 0 auto 28px;
    animation: fadeUp 0.8s 0.25s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.search-inner {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 50px;
    padding: 6px;
    box-shadow: 0 10px 40px var(--shadow);
    transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.search-inner:focus-within {
    border-color: rgba(33, 150, 243, 0.4);
    box-shadow: 0 14px 50px var(--shadow-lg), 0 0 0 4px rgba(33, 150, 243, 0.12);
    transform: translateY(-2px) scale(1.01);
}

.search-icon {
    flex-shrink: 0;
    margin-left: 16px;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.search-inner:focus-within .search-icon {
    color: var(--primary);
}

.search-inner input {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-main);
    font-size: 16px;
    padding: 12px 14px;
    outline: none;
    min-width: 0;
}

.search-inner input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.search-clear {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.2s ease;
    margin-right: 4px;
}

.search-clear.visible {
    opacity: 1;
    transform: scale(1);
}

.search-clear:hover {
    background: rgba(244, 67, 54, 0.12);
    color: var(--danger);
}

.search-submit {
    flex-shrink: 0;
    padding: 12px 26px;
    border: none;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(33, 150, 243, 0.3);
}

.search-submit:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    box-shadow: 0 6px 22px rgba(33, 150, 243, 0.4);
    transform: translateX(2px);
}

/* 搜索历史 */
.search-history {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: 0 10px 40px var(--shadow-lg);
    z-index: 20;
    max-height: 240px;
    overflow-y: auto;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: all 0.25s ease;
}

.search-history.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 18px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-main);
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border);
}

.history-item:last-child {
    border-bottom: none;
}

.history-item:hover {
    background: rgba(33, 150, 243, 0.08);
    color: var(--primary);
}

.history-item::before {
    content: '↺';
    color: var(--text-muted);
    font-size: 12px;
}

/* ---------- 快捷标签 ---------- */
.quick-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 36px;
    animation: fadeUp 0.8s 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.quick-tag {
    padding: 8px 16px;
    border-radius: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.25s ease;
    animation: popIn 0.4s ease both;
}

@keyframes popIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.quick-tag:hover {
    color: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 4px 14px rgba(33, 150, 243, 0.18);
    transform: translateY(-2px);
}

/* ---------- 统计卡片 ---------- */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    animation: fadeUp 0.8s 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.stat-card {
    min-width: 110px;
    padding: 16px 24px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: 0 8px 30px var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--shadow-lg);
}

.stat-num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ---------- 结果区域 ---------- */
.result-section {
    display: none;
    max-width: 900px;
    margin: 0 auto;
    padding: 10px 0 40px;
    animation: fadeUp 0.45s ease both;
}

.result-section.active {
    display: block;
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 18px;
    padding: 10px 0;
}

.result-meta {
    font-size: 14px;
    color: var(--text-muted);
}

.result-meta strong {
    color: var(--primary);
    margin: 0 4px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.btn-ghost {
    background: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: rgba(33, 150, 243, 0.08);
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.35);
    transform: translateY(-2px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #388E3C);
    color: #fff;
}

.btn-success:hover {
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.35);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: #fff;
}

.btn-secondary:hover {
    box-shadow: 0 6px 20px rgba(255, 152, 0, 0.35);
    transform: translateY(-2px);
}

/* 按钮涟漪 */
.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease;
}

.btn:active::after {
    width: 200%;
    height: 200%;
}

/* 结果列表 */
.result-box {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.list-item {
    padding: 18px 22px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
    overflow: hidden;
    animation: slideIn 0.4s ease both;
    backdrop-filter: blur(12px);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.list-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.list-item:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 12px 40px var(--shadow-lg);
    border-color: rgba(33, 150, 243, 0.25);
}

.list-item:hover::before {
    transform: scaleY(1);
}

.list-item-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
    line-height: 1.4;
}

.list-item-cat {
    font-size: 12px;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 50px;
    background: rgba(33, 150, 243, 0.08);
}

.empty-tip {
    text-align: center;
    padding: 70px 20px;
    color: var(--text-muted);
    font-size: 16px;
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius);
}

.empty-tip svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* 高亮 */
mark {
    background: linear-gradient(120deg, rgba(255, 235, 59, 0.85), rgba(255, 235, 59, 0.55));
    color: #1a1a00;
    font-weight: 700;
    border-radius: 2px;
}

body.dark-mode mark {
    background: linear-gradient(120deg, rgba(255, 183, 77, 0.85), rgba(255, 183, 77, 0.45));
    color: #1a1200;
}

/* ---------- 详情页 ---------- */
.detail-page {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: 0 12px 40px var(--shadow);
    backdrop-filter: blur(16px);
    animation: fadeUp 0.45s ease both;
}

.detail-title {
    font-size: 24px;
    font-weight: 800;
    line-height: 1.35;
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.detail-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--text-main);
    white-space: pre-wrap;
    word-break: break-word;
    margin-bottom: 24px;
}

.detail-content p {
    margin-bottom: 14px;
}

.action-bar {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    flex-wrap: wrap;
    padding-top: 18px;
    border-top: 1px solid var(--border);
}

/* ---------- 图片查看器 ---------- */
.image-viewer {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.image-viewer.visible {
    opacity: 1;
    visibility: visible;
}

.image-viewer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(8px);
}

.image-viewer-content {
    position: relative;
    width: 92vw;
    height: 88vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.viewer-image-wrap {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.viewer-image-wrap img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.92);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.image-viewer.visible .viewer-image-wrap img.loaded {
    transform: scale(1);
    opacity: 1;
}

.viewer-btn {
    position: absolute;
    z-index: 3;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    cursor: pointer;
    transition: all 0.25s ease;
    backdrop-filter: blur(4px);
}

.viewer-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

.viewer-btn.close-btn {
    top: 20px;
    right: 20px;
    background: rgba(244, 67, 54, 0.75);
}

.viewer-btn.close-btn:hover {
    background: rgba(244, 67, 54, 0.95);
}

.viewer-btn.nav-btn {
    top: 50%;
    transform: translateY(-50%);
}

.viewer-btn.nav-btn:hover {
    transform: translateY(-50%) scale(1.1);
}

.viewer-btn.prev-btn { left: 20px; }
.viewer-btn.next-btn { right: 20px; }

.image-count {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 20px;
    border-radius: 50px;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    font-size: 14px;
    backdrop-filter: blur(4px);
}

/* ---------- 弹窗 ---------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 25px 80px var(--shadow-lg);
    backdrop-filter: blur(24px);
    transform: translateY(30px) scale(0.96);
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.35s ease;
}

.modal.show .modal-content {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.modal-close {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger);
    transform: rotate(90deg);
}

.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.platform-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    transition: all 0.25s ease;
}

.platform-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.platform-btn.windows { background: linear-gradient(135deg, #0078d7, #106ebe); }
.platform-btn.android { background: linear-gradient(135deg, #34a853, #2d8f48); }
.platform-btn.ios { background: linear-gradient(135deg, #555, #222); }

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    padding: 12px 24px;
    border-radius: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: 0 12px 40px var(--shadow-lg);
    color: var(--text-main);
    font-size: 14px;
    font-weight: 600;
    z-index: 2000;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
    backdrop-filter: blur(12px);
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- 返回顶部 ---------- */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--primary);
    cursor: pointer;
    box-shadow: 0 6px 22px var(--shadow);
    opacity: 0;
    transform: translateY(20px);
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 20;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(33, 150, 243, 0.35);
}

/* ---------- 加载动画 ---------- */
.loading-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(33, 150, 243, 0.15);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 14px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
    .app-toolbar {
        padding: 10px 14px;
        padding-left: max(14px, env(safe-area-inset-left));
        padding-right: max(14px, env(safe-area-inset-right));
    }

    .brand-mini span:last-child {
        display: none;
    }

    .download-btn span {
        display: none;
    }

    .toolbar-right {
        gap: 8px;
    }

    .language-select {
        max-width: 90px;
        font-size: 12px;
        padding-right: 22px;
    }

    .content-area {
        padding: 16px;
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }

    .hero-section {
        min-height: calc(100vh - 120px);
        min-height: calc(100svh - 120px);
        padding: 20px 10px;
    }

    .hero-title {
        font-size: clamp(26px, 8vw, 40px);
    }

    .hero-subtitle {
        font-size: 15px;
        margin-bottom: 28px;
        padding: 0 10px;
    }

    .search-inner {
        padding: 4px;
    }

    .search-submit {
        padding: 10px 16px;
        font-size: 14px;
    }

    .search-inner input {
        padding: 10px 8px;
        font-size: 15px;
    }

    .hero-stats {
        gap: 12px;
    }

    .stat-card {
        min-width: 90px;
        padding: 14px 18px;
    }

    .result-section {
        padding: 10px 0 30px;
    }

    .detail-page {
        padding: 20px;
        border-radius: var(--radius-sm);
    }

    .detail-title {
        font-size: 20px;
    }

    .detail-content {
        font-size: 15px;
        line-height: 1.8;
    }

    .action-bar {
        justify-content: stretch;
        gap: 10px;
    }

    .action-bar .btn {
        flex: 1;
        min-width: 100px;
        padding: 12px 14px;
        font-size: 14px;
    }

    .viewer-btn.nav-btn {
        width: 42px;
        height: 42px;
    }

    .viewer-btn.prev-btn { left: 10px; }
    .viewer-btn.next-btn { right: 10px; }

    .viewer-btn.close-btn {
        top: env(safe-area-inset-top, 12px);
        right: max(12px, env(safe-area-inset-right));
        width: 42px;
        height: 42px;
    }

    .modal {
        padding: 16px;
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }

    .modal-body {
        padding: 20px;
        gap: 12px;
    }

    .platform-btn {
        padding: 14px 18px;
        font-size: 15px;
    }

    .back-to-top {
        right: 16px;
        bottom: max(16px, env(safe-area-inset-bottom));
    }

    .sidebar {
        width: 300px;
        max-width: 88vw;
    }

    .category-item {
        padding: 16px;
        font-size: 16px;
    }

    .subcategory-item {
        padding: 13px 16px 13px 30px;
        font-size: 15px;
    }

    .toast {
        bottom: max(20px, env(safe-area-inset-bottom));
        max-width: calc(100vw - 40px);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }

    .quick-tag {
        font-size: 12px;
        padding: 6px 12px;
    }

    .modal-content {
        border-radius: var(--radius-sm);
    }

    .search-submit {
        padding: 10px 14px;
    }

    .search-inner input {
        font-size: 14px;
    }

    .list-item {
        padding: 16px 18px;
    }

    .list-item-title {
        font-size: 15px;
    }

    .action-bar .btn {
        min-width: 80px;
        font-size: 13px;
    }
}