:root {
    --font-sans: 'Source Han Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-serif: 'Noto Serif SC', 'Source Han Serif SC', 'Playfair Display', serif;
    --font-mono-display: 'Courier Prime', 'Noto Serif SC', serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;

    --primary-red: #e31b23;
    --secondary-red: #9e1f2b;
    --bg-light-red: #fae1e3;
    --gold: #d4a84b;
    --deep-red-gradient: linear-gradient(180deg, #8b0000 0%, #1a0000 100%);

    --color-primary-50: #fef2f2;
    --color-primary-100: #fde3e5;
    --color-primary-200: #fcccd1;
    --color-primary-300: #f9a8b3;
    --color-primary-400: #f47281;
    --color-primary-500: #e8475f;
    --color-primary-600: #c41e3a;
    --color-primary-700: #a0182e;
    --color-primary-800: #851526;
    --color-primary-900: #6e1220;

    --color-gold-50: #fefce8;
    --color-gold-100: #fef9c3;
    --color-gold-200: #fef08a;
    --color-gold-300: #d4a84b;
    --color-gold-400: #b8942f;
    --color-gold-500: #9a7b2e;
    --color-gold-600: #7a6225;
    --color-gold-700: #a16207;
    --color-gold-800: #854d0e;
    --color-gold-900: #713f12;

    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #e5e5e5;
    --color-neutral-300: #d4d4d4;
    --color-neutral-350: #8a8a8a;
    --color-neutral-400: #737373;
    --color-neutral-500: #525252;
    --color-neutral-600: #404040;
    --color-neutral-700: #2a2a2a;
    --color-neutral-800: #262626;
    --color-neutral-900: #171717;

    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;
    --color-error-500: #ef4444;
    --color-error-600: #dc2626;
    --color-info-500: #3b82f6;
    --color-info-600: #2563eb;

    --sidebar-bg: #ffffff;
    --sidebar-bg-hover: #f5f5f7;
    --sidebar-text: #5a5a6e;
    --sidebar-text-hover: #1a1a2e;
    --sidebar-active-bg: rgba(196, 30, 58, 0.08);
    --sidebar-active: #c41e3a;
    --sidebar-border: #e8e8ec;
    --sidebar-logo-from: #c41e3a;
    --sidebar-logo-to: #9e1f2b;

    --content-bg: #f8f7f4;
    --content-text: #1a1a2e;
    --content-text-secondary: #4a4a6a;
    --content-text-tertiary: #595978;
    --content-text-tertiary-light: #7c7c9a;
    --content-text-inverse: #f0f0f5;

    --card-bg: #fffef9;
    --card-bg-hover: #fafafc;
    --card-border: #e8e6e1;
    --card-border-hover: #d4d0c8;

    --accent-red: var(--color-primary-600);
    --primary: var(--color-primary-600);
    --accent-red-hover: var(--color-primary-500);
    --accent-gold: var(--color-gold-600);
    --accent-blue: var(--color-info-500);
    --accent-green: var(--color-success-500);
    --accent-purple: #8b5cf6;
    --accent-orange: #f97316;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.04);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 30px rgba(196, 30, 58, 0.12), 0 0 60px rgba(196, 30, 58, 0.06);
    --shadow-red: 0 8px 30px rgba(196, 30, 58, 0.15), 0 4px 8px rgba(196, 30, 58, 0.08);
    --shadow-gold: 0 8px 30px rgba(212, 168, 75, 0.15), 0 4px 8px rgba(212, 168, 75, 0.08);

    --space-0: 0;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 28px;
    --space-8: 32px;
    --space-9: 36px;
    --space-10: 40px;
    --space-11: 44px;
    --space-12: 48px;
    --space-13: 52px;
    --space-14: 56px;
    --space-15: 60px;
    --space-16: 64px;
    --space-17: 68px;
    --space-18: 72px;
    --space-19: 76px;
    --space-20: 80px;
    --space-24: 96px;
    --space-30: 120px;

    --radius-2xs: 2px;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;

    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.6;
    --leading-relaxed: 1.75;

    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    --transition-fast: 0.12s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

    --sidebar-width: 230px;
    --header-height: 60px;
    --content-max: 1600px;

    /* iOS safe area insets (jiggle island / dynamic island) */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);

    --z-sidebar: 100;
    --z-header: 50;
    --z-dropdown: 200;
    --z-fixed: 100;
    --z-modal: 1000;
    --z-toast: 400;

    /* === Brand color hover/active states === */
    --primary-red-hover: #b01828;
    --primary-red-active: #8a1320;
    --gold-hover: #c89a3d;
    --gold-darker: #a17d2c;

    /* === Modern easing === */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);

    --glass-bg: rgba(255, 255, 255, 0.78);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    --glass-blur: 30px;
    --glass-blur-strong: 30px;

    --card-bg-gradient: linear-gradient(135deg, #ffffff 0%, #fafafc 100%);
    --hero-gradient: linear-gradient(135deg, rgba(196,30,58,0.06) 0%, rgba(212,168,75,0.04) 50%, rgba(59,130,246,0.03) 100%);
    --accent-red-soft: rgba(196, 30, 58, 0.06);
    --accent-red-muted: rgba(196, 30, 58, 0.12);
    --accent-gold-soft: rgba(212, 168, 75, 0.08);
    --accent-gold-muted: rgba(212, 168, 75, 0.15);

    /* 情感标签令牌 (D-07 硬编码值令牌化) */
    --emotion-red-bg: rgba(196, 30, 58, 0.85);
    --emotion-red-bg-soft: rgba(196, 30, 58, 0.12);
    --emotion-red-fg: #c41e3a;
    --emotion-gold-bg: rgba(154, 122, 37, 0.85);
    --emotion-gold-bg-soft: rgba(154, 122, 37, 0.12);
    --emotion-gold-fg: #9a7b2e;
    --emotion-gray-bg: rgba(82, 82, 82, 0.70);
    --emotion-gray-bg-soft: rgba(82, 82, 82, 0.10);
    --emotion-gray-fg: #525252;

    /* 通用遮罩令牌 */
    --scrim-base: rgba(0, 0, 0, 0.5);
    --scrim-light: rgba(0, 0, 0, 0.3);
    --scrim-deep: rgba(0, 0, 0, 0.7);
    --gradient-red-gold: linear-gradient(135deg, #8b0000 0%, #c41e3a 40%, #d4a84b 100%);
    --gradient-red-deep: linear-gradient(135deg, #6e1220 0%, #c41e3a 50%, #a0182e 100%);
    --gradient-warm: linear-gradient(135deg, rgba(196,30,58,0.04) 0%, rgba(212,168,75,0.03) 50%, rgba(139,0,0,0.02) 100%);
    --gradient-card-shine: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0) 60%);
    --texture-dots: radial-gradient(circle, rgba(196,30,58,0.03) 1px, transparent 1px);
    --texture-dots-size: 24px 24px;
    --sidebar-gradient: linear-gradient(180deg, #1a1025 0%, #1e1530 40%, #1a1025 100%);
}

body.dark {
    --content-bg: #0f0f1a;
    --content-text: #e8e8f0;
    --content-text-secondary: #a0a0b8;
    --content-text-tertiary: #7c7c9a;
    --content-text-tertiary-light: #8a8aa0;
    --content-text-inverse: #0f0f1a;
    --card-bg: #161628;
    --card-bg-hover: #222240;
    --card-border: #2a2a40;
    --card-border-hover: #3a3a55;
    --glass-bg: rgba(26, 26, 46, 0.80);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --card-bg-gradient: linear-gradient(135deg, #1a1a2e 0%, #1f1f38 100%);
    --hero-gradient: linear-gradient(135deg, rgba(196,30,58,0.10) 0%, rgba(212,168,75,0.06) 50%, rgba(59,130,246,0.04) 100%);
    --sidebar-bg: #141420;
    --sidebar-bg-hover: #1e1e32;
    --sidebar-text: #8888a0;
    --sidebar-text-hover: #d0d0e0;
    --sidebar-active-bg: rgba(196, 30, 58, 0.15);
    --sidebar-active: #f47281;
    --sidebar-border: #252538;
    --color-neutral-200: #2a2840;
    --color-neutral-300: #3d3a58;
    --color-neutral-400: #5a5880;
    --accent-red-soft: rgba(244, 114, 129, 0.08);
    --accent-red-muted: rgba(244, 114, 129, 0.15);
    --accent-gold-soft: rgba(212, 168, 75, 0.10);
    --accent-gold-muted: rgba(212, 168, 75, 0.18);
    --gradient-red-gold: linear-gradient(135deg, #3d0a0a 0%, #6e1220 40%, #4a3510 100%);
    --gradient-red-deep: linear-gradient(135deg, #2a0810 0%, #6e1220 50%, #3d0a12 100%);
    --gradient-warm: linear-gradient(135deg, rgba(196,30,58,0.06) 0%, rgba(212,168,75,0.04) 50%, rgba(139,0,0,0.03) 100%);
    --gradient-card-shine: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0) 60%);
    --texture-dots: radial-gradient(circle, rgba(244,114,129,0.04) 1px, transparent 1px);
    --shadow-red: 0 8px 30px rgba(244, 114, 129, 0.10), 0 4px 8px rgba(244, 114, 129, 0.06);
    --shadow-gold: 0 8px 30px rgba(212, 168, 75, 0.10), 0 4px 8px rgba(212, 168, 75, 0.06);
    color-scheme: dark;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--content-bg);
    color: var(--content-text);
    line-height: var(--leading-normal);
    /* body 不再使用 flex 布局；所有 fixed 元素（QA、back-to-top、shortcuts 等）会脱离文档流，
       而 main-content 改为 block 布局可获得完整视口宽度。 */
    min-height: 100vh;
    min-height: 100dvh;
    font-size: var(--text-base);
    transition: background-color 0.3s ease, color 0.3s ease;
    display: block;
    overflow-x: hidden;
}

img, svg, video {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    line-height: var(--leading-snug);
    color: var(--content-text);
}

.topnav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06), 0 0 1px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-10);
    z-index: var(--z-header);
    gap: var(--space-6);
}

.topnav-brand {
    flex-shrink: 0;
}

.topnav-logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.topnav-logo {
    width: 32px;
    height: 32px;
    background: var(--gradient-red-deep);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: white;
    box-shadow: 0 2px 6px rgba(196, 30, 58, 0.25);
    position: relative;
    overflow: hidden;
}

.topnav-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--content-text);
    letter-spacing: 0.02em;
}

.topnav-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.topnav-links {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
}

.topnav-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4);
    color: var(--content-text-secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast);
    position: relative;
    white-space: nowrap;
    min-height: 44px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
}

.topnav-link:hover {
    background: var(--sidebar-bg-hover);
    color: var(--content-text);
}

.topnav-link.active {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-active);
    font-weight: var(--font-semibold);
}

/* 顶栏下拉菜单 (D-10/S-11 导航重构) */
.topnav-dropdown { position: relative; }
.topnav-dropdown-toggle { font-size: var(--text-sm); }
.topnav-dropdown-toggle:focus-visible {
    outline: 2px solid var(--accent-red);
    outline-offset: 2px;
}
.topnav-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 200px;
    list-style: none;
    margin: 0;
    padding: var(--space-2);
    background: var(--card-bg);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: var(--z-dropdown);
}
.topnav-dropdown:hover > .topnav-dropdown-menu,
.topnav-dropdown:focus-within > .topnav-dropdown-menu,
.topnav-dropdown.is-open > .topnav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.topnav-dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    color: var(--content-text);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    min-height: 40px;
    transition: background var(--transition-fast);
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
}
.topnav-dropdown-link:hover,
.topnav-dropdown-link.active {
    background: var(--sidebar-bg-hover);
    color: var(--accent-red);
}
/* 移动端底部 Tab Bar (D-11/S-12) */
.mobile-tab-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(56px + var(--safe-bottom));
    padding-bottom: var(--safe-bottom);
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur-strong)) saturate(180%);
    -webkit-backdrop-filter: blur(var(--glass-blur-strong)) saturate(180%);
    border-top: 1px solid var(--glass-border);
    z-index: var(--z-fixed);
    justify-content: space-around;
    align-items: stretch;
}
.mobile-tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    color: var(--content-text-secondary);
    text-decoration: none;
    font-size: 0.7rem;
    background: transparent;
    border: none;
    cursor: pointer;
    min-height: 56px;
    padding: 6px 4px;
    font-family: inherit;
    transition: color var(--transition-fast);
}
.mobile-tab-item .icon { width: 22px; height: 22px; }
.mobile-tab-item.active { color: var(--accent-red); font-weight: 600; }
.mobile-tab-item:active { background: var(--sidebar-bg-hover); }
@media (max-width: 768px) {
    .mobile-tab-bar { display: flex; }
    body { padding-bottom: calc(56px + var(--safe-bottom)); } /* 给 tab bar 留位 */
}

body.dark .topnav-dropdown-menu {
    background: var(--card-bg);
    border-color: var(--color-neutral-700);
}
@media (max-width: 768px) {
    .topnav-dropdown-menu { display: none; } /* 移动端由底部 Tab Bar 承担 */
}

.topnav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* --- 兼容版 topnav（独立页面使用 topnav-inner 结构）--- */
.topnav-inner {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.topnav-inner .topnav-logo {
    width: auto;
    height: auto;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    color: var(--content-text);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    letter-spacing: 0.02em;
}

.topnav-inner .topnav-logo svg.icon {
    width: 32px;
    height: 32px;
    color: var(--accent-red);
    flex-shrink: 0;
}

.topnav-inner .topnav-links {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    background: var(--content-bg);
    color: var(--content-text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--sidebar-bg-hover);
    color: var(--accent-red);
    border-color: var(--accent-red);
    transform: translateY(-1px);
}

.theme-toggle svg.icon {
    width: 18px;
    height: 18px;
}

@media (max-width: 768px) {
    .topnav-inner {
        gap: var(--space-3);
    }
    .topnav-inner .topnav-links {
        display: none;
    }
}

.topnav-search input {
    width: 12.5rem;
    padding: var(--space-2) var(--space-9) var(--space-2) var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    background: var(--content-bg);
    transition: width var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.topnav-search input:focus {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.08);
    width: 16.25rem;
    outline: none;
}
.topnav-search .search-icon {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--content-text-tertiary);
    pointer-events: none;
}

.main-content {
    flex: 1;
    margin-left: 0;
    padding-top: var(--header-height);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
    max-width: 100%;
    overflow-x: hidden;
}

/* 保留旧 sidebar / header 类用于兼容 */
.sidebar,
.header {
    display: none;
}

/* ===== 统一图标系统 ===== */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    flex-shrink: 0;
}
.icon svg {
    width: 100%;
    height: 100%;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.icon-sm { width: 14px; height: 14px; }
.icon-md { width: 18px; height: 18px; }
.icon-lg { width: 22px; height: 22px; }
.icon-xl { width: 28px; height: 28px; }
.icon-red { color: var(--accent-red); }
.icon-gold { color: var(--gold-darker); }
.icon-muted { color: var(--content-text-tertiary); }

.page-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--content-text);
    letter-spacing: -0.01em;
}

/* 页面标题区（S-24 实施） */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: var(--space-5);
    padding-bottom: var(--space-5);
    margin-bottom: var(--space-6);
    border-bottom: 1px solid var(--card-border);
    flex-wrap: wrap;
}
.page-header-titles {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.page-header-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
    flex-shrink: 0;
}
.page-header-actions {
    display: flex;
    gap: var(--space-2);
    align-items: center;
}
.page-stats {
    font-size: var(--text-sm);
    color: var(--content-text-secondary);
    font-weight: 500;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--content-text-tertiary);
}

.breadcrumb a:hover { color: var(--accent-red); }
.breadcrumb .separator { color: var(--color-neutral-300); }

.search-box { position: relative; }
.search-box input {
    padding: var(--space-2) var(--space-10) var(--space-2) var(--space-4);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    width: 16.25rem;
    background: var(--content-bg);
    transition: width var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}
.search-box input:focus {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.08);
    width: 18.75rem;
}
.search-box i {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--content-text-tertiary);
    font-style: normal;
    pointer-events: none;
}

.lang-switcher {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    background: var(--card-bg);
    color: var(--content-text);
    cursor: pointer;
    transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
}
.lang-switcher:hover {
    border-color: var(--accent-red);
}
.lang-switcher:focus {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-avatar {
    width: var(--space-9);
    height: var(--space-9);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-red), var(--color-primary-800));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: transform var(--transition-base);
}
.user-avatar:hover { transform: scale(1.08); }

.user-name {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--content-text-secondary);
}

.user-menu-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-2);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--card-border);
    min-width: 160px;
    padding: var(--space-1) 0;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.user-menu-wrapper:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    color: var(--content-text);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    cursor: pointer;
}

.user-dropdown-item:hover {
    background: var(--color-primary-50);
    color: var(--accent-red);
}

.dropdown-icon {
    font-size: 1rem;
}

.user-dropdown-divider {
    height: 1px;
    background: var(--card-border);
    margin: var(--space-1) 0;
}

.notification-badge {
    position: relative;
    cursor: pointer;
    padding: var(--space-1);
}
.notification-badge i {
    font-size: 1.3rem;
    color: var(--content-text-tertiary);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    font-style: normal;
}
.notification-badge:hover i {
    color: var(--accent-red);
    transform: scale(1.1);
}
.notification-badge span {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--color-error-500);
    color: white;
    font-size: 0.65rem;
    font-weight: var(--font-bold);
    padding: var(--space-0) var(--space-1);
    border-radius: var(--radius-full);
    min-width: var(--space-4);
    text-align: center;
    line-height: 1.3;
    border: 2px solid white;
}

.notification-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: -20px;
    width: min(380px, 90vw);
    max-height: 30rem;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    display: none;
    overflow: hidden;
    border: 1px solid var(--card-border);
}
.notification-dropdown.show {
    display: block;
    animation: fadeSlideIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(-8px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

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

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-24px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(24px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 4px rgba(196, 30, 58, 0); }
    50% { box-shadow: 0 0 18px rgba(196, 30, 58, 0.25); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

@keyframes borderPulse {
    0%, 100% { border-color: transparent; }
    50% { border-color: rgba(196, 30, 58, 0.4); }
}

.notification-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--content-bg);
}
.notification-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--content-text);
}
.notification-actions { display: flex; gap: var(--space-2); }
.notification-action-btn {
    background: none;
    border: 1px solid var(--card-border);
    color: var(--content-text-secondary);
    font-size: var(--text-xs);
    cursor: pointer;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.notification-action-btn:hover {
    background: var(--card-bg);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.notification-list { max-height: 21rem; overflow-y: auto; }
.notification-list::-webkit-scrollbar { width: 5px; }
.notification-list::-webkit-scrollbar-track { background: transparent; }
.notification-list::-webkit-scrollbar-thumb { background: var(--color-neutral-200); border-radius: 3px; }

.notification-item {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--card-border);
    cursor: pointer;
    transition: background var(--transition-fast);
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
}
.notification-item:hover { background: var(--content-bg); }
.notification-item:last-child { border-bottom: none; }
.notification-item.unread { background: rgba(196, 30, 58, 0.03); }

.notification-icon {
    width: var(--space-10);
    height: var(--space-10);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}
.notification-icon svg { display: block; }
.notification-icon.success { background: rgba(34, 197, 94, 0.12); color: #16a34a; }
.notification-icon.error { background: rgba(239, 68, 68, 0.12); color: #dc2626; }
.notification-icon.warning { background: rgba(245, 158, 11, 0.12); color: #d97706; }
.notification-icon.info { background: rgba(59, 130, 246, 0.12); color: #2563eb; }
.notification-item:hover .notification-icon { transform: scale(1.08); }

.notification-content { flex: 1; min-width: 0; }
.notification-text {
    font-size: var(--text-sm);
    color: var(--content-text);
    margin-bottom: var(--space-1);
    line-height: 1.4;
}
.notification-time {
    font-size: var(--text-xs);
    color: var(--content-text-tertiary);
}

.notification-empty {
    padding: var(--space-10) var(--space-5);
    text-align: center;
    color: var(--content-text-tertiary);
}
.notification-empty-icon { font-size: 2.5rem; margin-bottom: var(--space-3); }

.notification-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--card-border);
    text-align: center;
    background: var(--content-bg);
}
.notification-footer-btn {
    background: none;
    border: none;
    color: var(--accent-red);
    font-size: var(--text-sm);
    cursor: pointer;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
    width: 100%;
    font-weight: var(--font-medium);
}
.notification-footer-btn:hover { background: rgba(196, 30, 58, 0.06); }

.content-area {
    flex: 1;
    padding: var(--space-8) var(--space-8);
    max-width: var(--content-max);
    width: 100%;
    margin: 0 auto;
    background-image: var(--texture-dots);
    background-size: var(--texture-dots-size);
    overflow-x: hidden;
}

.section { margin-bottom: var(--space-10); }

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-7);
    gap: var(--space-4);
    flex-wrap: wrap;
    position: relative;
    padding-right: 56px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--content-text);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    letter-spacing: 0.04em;
}

.section-title::before {
    content: '';
    width: var(--space-1);
    height: 1.75rem;
    background: linear-gradient(180deg, var(--accent-red), var(--accent-gold));
    border-radius: 2px;
    flex-shrink: 0;
    box-shadow: 0 0 12px rgba(196, 30, 58, 0.25);
}

.section-link {
    color: var(--accent-red);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}
.section-link:hover {
    color: var(--accent-red);
    text-shadow: 0 0 8px rgba(196, 30, 58, 0.3);
    transform: translateX(2px);
}

/* ============================================
   模块右上角「展开/跳转」按钮（首页各模块统一入口）
   ============================================ */
.module-expand-btn {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.85);
    color: var(--accent-red);
    border: 1px solid rgba(196, 30, 58, 0.22);
    border-radius: 8px;
    cursor: pointer;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    z-index: 5;
    padding: 0;
    font-family: inherit;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.module-expand-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--content-text, #2a1010);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 6px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 200ms ease, transform 200ms ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    z-index: 10;
}
.module-expand-btn::before {
    content: '';
    position: absolute;
    top: calc(100% + 2px);
    right: 12px;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid var(--content-text, #2a1010);
    pointer-events: none;
    opacity: 0;
    transition: opacity 200ms ease;
    z-index: 10;
}
.module-expand-btn:hover::after,
.module-expand-btn:focus-visible::after,
.module-expand-btn:hover::before,
.module-expand-btn:focus-visible::before {
    opacity: 1;
    transform: translateY(0);
}
.module-expand-btn:hover {
    background: var(--accent-red);
    color: #fff;
    border-color: var(--accent-red);
    transform: translateY(-1px) scale(1.04);
    box-shadow: 0 4px 14px rgba(196, 30, 58, 0.28);
}
.module-expand-btn:active {
    transform: translateY(0) scale(0.94);
    box-shadow: 0 1px 4px rgba(196, 30, 58, 0.2);
}
.module-expand-btn:focus-visible {
    outline: 2px solid var(--accent-red);
    outline-offset: 2px;
}
.module-expand-btn .icon { width: 16px; height: 16px; pointer-events: none; }

/* 卡片式小模块的相对定位容器 */
.module-card { position: relative; }

/* 模态遮罩层（用于无独立页面的模块展开视图） */
.module-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 10, 10, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 300ms ease, visibility 300ms ease;
    padding: var(--space-5);
}
.module-overlay.is-open { opacity: 1; visibility: visible; }
.module-overlay-content {
    background: #fff;
    border-radius: 16px;
    max-width: 960px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
    transform: translateY(20px) scale(0.96);
    transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}
.module-overlay.is-open .module-overlay-content { transform: translateY(0) scale(1); }
.module-overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-light, #f0e8e2);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1;
    border-radius: 16px 16px 0 0;
}
.module-overlay-title {
    font-family: var(--font-serif);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--content-text);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}
.module-overlay-title::before {
    content: '';
    width: 4px;
    height: 22px;
    background: linear-gradient(180deg, var(--accent-red), var(--accent-gold));
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(196, 30, 58, 0.3);
}
.module-overlay-close {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid rgba(196, 30, 58, 0.18);
    background: transparent;
    color: var(--accent-red);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 200ms ease;
    padding: 0;
}
.module-overlay-close:hover {
    background: var(--accent-red);
    color: #fff;
    border-color: var(--accent-red);
    transform: rotate(90deg);
}
.module-overlay-body { padding: 24px; }

/* 平台特色弹层内的栅格与简介样式 */
.features-intro {
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.06), rgba(245, 158, 11, 0.04));
    border: 1px solid rgba(196, 30, 58, 0.12);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 20px;
    color: var(--content-text);
    font-size: 14px;
    line-height: 1.7;
}
.features-grid--modal {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.features-grid--modal .feature-card {
    padding: 20px;
    border: 1px solid var(--card-border, #f0e8e2);
    border-radius: 12px;
    background: #fff;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
}
.features-grid--modal .feature-card:hover {
    border-color: rgba(196, 30, 58, 0.4);
    box-shadow: 0 8px 24px rgba(196, 30, 58, 0.1);
    transform: translateY(-2px);
}
.features-grid--modal .feature-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.08), rgba(196, 30, 58, 0.02));
    color: var(--accent-red);
    border-radius: 10px;
    border: 1px solid rgba(196, 30, 58, 0.18);
}
.features-grid--modal .feature-icon .icon { width: 22px; height: 22px; }
.features-grid--modal .feature-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--content-text);
    margin: 0;
}
.features-grid--modal .feature-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-muted, #6b5e5e);
    margin: 0;
}
@media (max-width: 720px) {
    .features-grid--modal { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .module-expand-btn { width: 28px; height: 28px; top: 10px; right: 10px; }
    .module-expand-btn .icon { width: 14px; height: 14px; }
    .module-overlay-content { max-height: 92vh; border-radius: 12px; }
    .module-overlay-header { padding: 16px; border-radius: 12px 12px 0 0; }
    .module-overlay-body { padding: 16px; }
    .module-overlay-title { font-size: 1.15rem; }
    .section-header { padding-right: 44px; }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
    line-height: 1.4;
    font-family: var(--font-sans);
    user-select: none;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; pointer-events: none; }

.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--text-xs); border-radius: var(--radius-sm); }
.btn-lg { padding: var(--space-3) var(--space-7); font-size: var(--text-base); border-radius: var(--radius-lg); }

.btn-loading {
    pointer-events: none;
    opacity: 0.75;
    cursor: wait;
}

.btn-spinner {
    display: inline-block;
    width: var(--space-4);
    height: var(--space-4);
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: btnSpin 0.6s linear infinite;
}

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

.btn-success-state {
    background: var(--color-success-500) !important;
    color: white !important;
    border-color: var(--color-success-500) !important;
    box-shadow: 0 4px 16px rgba(34, 197, 94, 0.3) !important;
}

.btn-error-state {
    background: var(--color-error-500) !important;
    color: white !important;
    border-color: var(--color-error-500) !important;
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3) !important;
}

.btn {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    transform: scale(0);
    animation: rippleEffect 0.55s ease-out;
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(3);
        opacity: 0;
    }
}

.btn-primary {
    background: var(--gradient-red-deep);
    color: white;
    border: none;
    box-shadow: var(--shadow-sm), 0 2px 8px rgba(196, 30, 58, 0.2);
}
.btn-primary:hover {
    background: linear-gradient(135deg, #6e1220 0%, #a0182e 50%, #851526 100%);
    box-shadow: var(--shadow-red);
    transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: transparent;
    color: var(--accent-red);
    border: 1px solid var(--accent-red);
}
.btn-secondary:hover {
    background: var(--accent-red-soft);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.btn-outline {
    background: transparent;
    color: var(--content-text-secondary);
    border: 1px solid var(--card-border);
}
.btn-outline:hover {
    background: var(--content-bg);
    border-color: var(--card-border-hover);
    color: var(--content-text);
}

.btn-danger {
    background: var(--color-error-500);
    color: white;
}
.btn-danger:hover { background: var(--color-error-600); box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3); }

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    position: relative;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), box-shadow 0.35s ease;
}
.card:hover {
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(196, 30, 58, 0.08);
    transform: translateY(-1px);
}

.emotion-tag {
    position: absolute;
    top: var(--space-2);
    left: var(--space-2);
    padding: var(--space-0) var(--space-2);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    z-index: 2;
}
.emotion-tag.red { background: var(--emotion-red-bg); color: white; }
.emotion-tag.gold { background: var(--emotion-gold-bg); color: white; }
.emotion-tag.gray { background: var(--emotion-gray-bg); color: white; }

.card-hoverable:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(196, 30, 58, 0.08);
    border-color: var(--card-border-hover);
}

.form-group { margin-bottom: var(--space-5); }

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--content-text-secondary);
    margin-bottom: var(--space-2);
}
.form-label .required { color: var(--color-error-500); margin-left: 2px; }
.form-label .form-hint {
    font-size: var(--text-xs);
    color: var(--content-text-tertiary);
    font-weight: var(--font-normal);
    margin-left: var(--space-2);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-family: var(--font-sans);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
    background: var(--card-bg);
    color: var(--content-text);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--accent-red);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.08);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-neutral-400); }

.form-select {
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.form-textarea {
    resize: vertical;
    min-height: 7.5rem;
    line-height: 1.6;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.form-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid var(--card-border);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}
.data-table thead {
    background: var(--content-bg);
    border-bottom: 2px solid var(--card-border);
}
.data-table th {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    font-weight: var(--font-semibold);
    color: var(--content-text-secondary);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}
.data-table td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--card-border);
    color: var(--content-text);
    line-height: 1.5;
}
.data-table tbody tr {
    transition: background var(--transition-fast);
}
.data-table tbody tr:hover { background: var(--content-bg); }
.data-table tbody tr:last-child td { border-bottom: none; }

.table-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.table-actions {
    display: flex;
    gap: var(--space-2);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-0) var(--space-2);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
}
.status-badge.success { background: rgba(34, 197, 94, 0.1); color: var(--color-success-600); }
.status-badge.error { background: rgba(239, 68, 68, 0.1); color: var(--color-error-600); }
.status-badge.warning { background: rgba(245, 158, 11, 0.1); color: var(--color-warning-600); }
.status-badge.info { background: rgba(59, 130, 246, 0.1); color: var(--color-info-600); }

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--card-border);
}

.pagination-btn {
    min-width: var(--space-9);
    height: var(--space-9);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    background: var(--card-bg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--content-text-secondary);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.pagination-btn:hover { border-color: var(--accent-red); color: var(--accent-red); }
.pagination-btn.active {
    background: var(--accent-red);
    color: white;
    border-color: var(--accent-red);
}
.pagination-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.pagination-info {
    font-size: var(--text-sm);
    color: var(--content-text-tertiary);
    padding: 0 var(--space-4);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: var(--space-7) var(--space-5);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), box-shadow 0.4s ease;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--accent-red-muted);
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.stat-card:hover::before { opacity: 1; }
.stat-card.red::before { background: linear-gradient(90deg, var(--accent-red), var(--color-primary-400)); }
.stat-card.gold::before { background: linear-gradient(90deg, var(--accent-gold), #f0d68a); }
.stat-card.blue::before { background: linear-gradient(90deg, var(--accent-blue), #60a5fa); }
.stat-card.green::before { background: linear-gradient(90deg, var(--accent-green), #4ade80); }
.stat-card.purple::before { background: linear-gradient(90deg, var(--accent-purple), #a78bfa); }

.stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top, rgba(196, 30, 58, 0.04) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.stat-card:hover::after { opacity: 1; }

.stat-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--accent-red-soft);
    border: 1px solid var(--accent-red-muted);
    transition: transform 0.3s ease;
}
.stat-card:hover .stat-icon {
    transform: scale(1.1) rotate(-3deg);
}
.stat-value {
    font-family: var(--font-serif);
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--content-text);
    line-height: 1;
    background: linear-gradient(135deg, var(--content-text) 0%, var(--accent-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    font-size: var(--text-sm);
    color: var(--content-text-tertiary);
    font-weight: var(--font-medium);
    letter-spacing: 0.05em;
}

.config-grid, .sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4);
}

.config-item, .site-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}
.config-item:hover, .site-item:hover { border-color: var(--card-border-hover); }

.config-label, .site-label {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--content-text-secondary);
}
.config-value, .site-value {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--content-text);
}

.site-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
}
.site-status.enabled { background: rgba(34, 197, 94, 0.1); color: var(--color-success-600); }
.site-status.disabled { background: rgba(239, 68, 68, 0.1); color: var(--color-error-600); }

.response-message {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    display: none;
    margin-top: var(--space-4);
}
.response-message.show { display: block; animation: fadeSlideIn 0.2s ease; }
.response-message.success { background: rgba(34, 197, 94, 0.08); color: var(--color-success-600); border: 1px solid rgba(34, 197, 94, 0.2); }
.response-message.error { background: rgba(239, 68, 68, 0.08); color: var(--color-error-600); border: 1px solid rgba(239, 68, 68, 0.2); }
.response-message.info { background: rgba(59, 130, 246, 0.08); color: var(--color-info-600); border: 1px solid rgba(59, 130, 246, 0.2); }

.crawl-progress {
    margin-top: var(--space-4);
    padding: var(--space-4);
    background: var(--content-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
}
.progress-bar {
    height: 6px;
    background: var(--color-neutral-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-2);
}
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-red), var(--color-primary-400));
    width: 0%;
    transition: width 0.4s ease;
    border-radius: var(--radius-full);
}
.progress-text {
    font-size: var(--text-xs);
    color: var(--content-text-secondary);
    text-align: center;
}

.empty-state {
    padding: var(--space-16) var(--space-6);
    text-align: center;
    color: var(--content-text-tertiary);
}
.empty-state-icon { font-size: 4rem; margin-bottom: var(--space-4); opacity: 0.4; }
.empty-state-title { font-size: var(--text-lg); font-weight: var(--font-semibold); margin-bottom: var(--space-2); color: var(--content-text-secondary); }
.empty-state-desc { font-size: var(--text-sm); max-width: 400px; margin: 0 auto var(--space-6); }

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.filter-tag {
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--content-text-secondary);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.filter-tag:hover { border-color: var(--accent-red); color: var(--accent-red); }
.filter-tag.active {
    background: var(--accent-red);
    color: white;
    border-color: var(--accent-red);
}

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}
.modal-overlay.show { display: flex; animation: fadeIn 0.2s ease; }
.modal {
    background: var(--card-bg);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

@media (max-width: 1024px) {
    .topnav { padding: 0 var(--space-6); gap: var(--space-4); }
    .topnav-nav { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: var(--glass-bg); backdrop-filter: blur(var(--glass-blur)); border-bottom: 1px solid var(--glass-border); padding: var(--space-4); }
    .topnav-nav.open { display: block; box-shadow: var(--shadow-lg); }
    .topnav-links { flex-direction: column; align-items: stretch; gap: var(--space-1); }
    .topnav-link { padding: var(--space-3) var(--space-4); }
    .topnav-search input { width: 10rem; }
    .topnav-search input:focus { width: 12rem; }
    .content-area { padding: var(--space-6); }
    .mobile-menu-btn { display: flex; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 中等屏幕 1024-1280 适配 */
@media (max-width: 1280px) and (min-width: 1025px) {
    :root { --content-max: 1280px; }
    .topnav-search input { width: 9rem; }
}

/* 平板竖屏 1024px 以下 */
@media (max-width: 1024px) and (min-width: 769px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .chart-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    /* topnav 移动端布局已在 1024px 媒体查询中统一设置，此处不再重复 */
    .content-area { padding: var(--space-4); }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .page-title { font-size: var(--text-lg); }
    .notification-dropdown { width: calc(100vw - 32px); right: -60px; }
    .user-avatar { width: var(--space-8); height: var(--space-8); }
    .topnav-actions { gap: var(--space-2); }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .page-header { flex-direction: column; align-items: stretch; gap: var(--space-3); }
    .chart-container { height: 15rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .topnav { padding: 0 var(--space-3); gap: var(--space-2); }
    .topnav-title { display: none; }
    .content-area { padding: var(--space-3); }
    .section-title { font-size: var(--text-lg); }
    .section-header { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
    .topnav-actions { gap: var(--space-1); }
    .topnav-search { display: none; }
    .hero-title { font-size: 1.6rem !important; }
    .hero-subtitle { font-size: var(--text-sm) !important; }
    .hero-actions { flex-direction: column; gap: var(--space-3); width: 100%; }
    .hero-actions .btn { width: 100%; }
    .stat-card { padding: var(--space-4) !important; }
    .feature-card { padding: var(--space-5) var(--space-4) !important; }
    .data-table th, .data-table td { padding: var(--space-2) var(--space-3); font-size: var(--text-xs); }
    .notification-dropdown { right: -100px; }
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: var(--space-1);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-3);
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    z-index: calc(var(--z-header) + 1);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}
.mobile-menu-btn:hover { background: var(--content-bg); }
.mobile-menu-btn span {
    display: block;
    width: 1.375rem;
    height: 0.125rem;
    background: var(--content-text);
    border-radius: 2px;
    transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
}
.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .mobile-menu-btn { display: flex; }
}

/* skltn */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e2e2e2 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
    pointer-events: none;
}
.skeleton-image { height: 200px; border-radius: var(--radius-md); margin-bottom: var(--space-3); }
.skeleton-line { height: 14px; margin-bottom: var(--space-2); }
.skeleton-line.w60 { width: 60%; }
.skeleton-line.w80 { width: 80%; }
.skeleton-line.w100 { width: 100%; }
.skeleton-circle { width: var(--space-10); height: var(--space-10); border-radius: var(--radius-full); }
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: calc(var(--space-6) + var(--safe-bottom));
    right: var(--space-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
}
.toast {
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    box-shadow: var(--shadow-xl);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    pointer-events: all;
    max-width: 24rem;
    border-left: 4px solid var(--accent-red);
    animation: toastIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.toast.success { border-color: var(--color-success-500); }
.toast.error { border-color: var(--color-error-500); }
.toast.warning { border-color: var(--color-warning-500); }
.toast.info { border-color: var(--color-info-500); }
.toast-icon { font-size: 1.2rem; flex-shrink: 0; }
.toast-exit {
    animation: toastOut 0.25s ease forwards;
}
@keyframes toastIn {
    from { opacity: 0; transform: translateX(100%) scale(0.95); }
    to { opacity: 1; transform: translateX(0) scale(1); }
}
@keyframes toastOut {
    to { opacity: 0; transform: translateX(100%) scale(0.9); }
}

/* Flt action btn */
.back-to-top {
    position: fixed;
    bottom: calc(var(--space-8) + var(--safe-bottom));
    right: var(--space-8);
    width: var(--space-12);
    height: var(--space-12);
    background: var(--accent-red);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg), 0 4px 16px rgba(196, 30, 58, 0.3);
    z-index: var(--z-dropdown);
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-spring);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), 0 8px 24px rgba(196, 30, 58, 0.4);
}

/* Reading progress */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-red), var(--accent-gold));
    z-index: calc(var(--z-header) + 10);
    transition: width 0.1s linear;
}

/* Page transition */
.page-transition {
    position: fixed;
    inset: 0;
    background: var(--content-bg);
    z-index: calc(var(--z-modal) + 1);
    animation: pageOut 0.35s ease forwards;
}
@keyframes pageOut {
    0% { clip-path: circle(0% at 50% 50%); }
    100% { clip-path: circle(150% at 50% 50%); }
}

/* Lazy img blur */
.lazy-img {
    filter: blur(15px);
    transform: scale(1.05);
    transition: filter 0.5s ease, transform 0.5s ease;
}
.lazy-img.loaded {
    filter: blur(0);
    transform: scale(1);
}

/* Parallax */
.parallax-container {
    overflow: hidden;
    position: relative;
}
.parallax-bg {
    position: absolute;
    top: -10%;
    left: 0;
    width: 100%;
    height: 120%;
    background-size: cover;
    background-position: center;
    will-change: transform;
}

body.dark .header {
    background: var(--glass-bg);
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.2);
}

body.dark .topnav {
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3), 0 0 1px rgba(0, 0, 0, 0.4);
}

body.dark .form-input,
body.dark .form-select,
body.dark .form-textarea {
    background: var(--card-bg);
    color: var(--content-text);
    border-color: var(--card-border);
}

body.dark .skeleton {
    background: linear-gradient(90deg, #1a1628 25%, #252038 50%, #1a1628 75%);
    background-size: 200% 100%;
}

body.dark .response-message.success { background: rgba(34, 197, 94, 0.08); }
body.dark .response-message.error { background: rgba(239, 68, 68, 0.08); }
body.dark .response-message.info { background: rgba(59, 130, 246, 0.08); }

body.dark .hero-section {
    background: var(--hero-gradient);
}

.image-fallback-emoji {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 11.25rem;
    font-size: 3rem;
    background: var(--color-neutral-100);
    border-radius: var(--radius-md);
}

.dark-toggle {
    background: none;
    border: 1px solid var(--card-border);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 1rem;
    min-width: 44px;
    min-height: 44px;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}
.dark-toggle:hover {
    border-color: var(--accent-gold);
    background: var(--accent-gold-soft);
}
.dark-icon-moon { display: none; }
.dark-icon-sun { display: block; }
.dark-icon-system { display: none; }
body.dark .dark-icon-sun { display: none; }
body.dark .dark-icon-moon { display: block; }
/* system 模式：根据 localStorage('theme') 在脚本中通过 inline style 控制当前图标显示 */

/* Counter pulse */
.stat-value.animated {
    animation: counterPulse 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes counterPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); color: var(--accent-red); }
    100% { transform: scale(1); }
}

/* Card enhance  */
.story-card:hover .story-image img { transform: scale(1.05); }
.story-image { overflow: hidden; border-radius: inherit; }
.story-image img { transition: transform 0.45s ease; }
.story-category { transition: background-color var(--transition-base), color var(--transition-base); }
.story-card:hover .story-category {
    background: var(--accent-red);
    color: white;
}

/* Full site scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-neutral-300) transparent;
}
*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
    background: var(--color-neutral-300);
    border-radius: 3px;
}

/* ===== Scroll Reveal Animations ===== */
.section {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.section.revealed {
    opacity: 1;
    transform: translateY(0);
}
/* Safety fallback: ensure sections visible if JS fails */
.section.no-js {
    opacity: 1;
    transform: none;
}
.stats-grid.revealed .stat-card {
    animation: statCardIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.stats-grid.revealed .stat-card:nth-child(1) { animation-delay: 0.05s; }
.stats-grid.revealed .stat-card:nth-child(2) { animation-delay: 0.1s; }
.stats-grid.revealed .stat-card:nth-child(3) { animation-delay: 0.15s; }
.stats-grid.revealed .stat-card:nth-child(4) { animation-delay: 0.2s; }
@keyframes statCardIn {
    from { opacity: 0; transform: translateY(16px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ===== Active Nav Indicator ===== */
.topnav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--accent-red);
    border-radius: 1px;
    animation: navIndicator 0.3s ease both;
}
@keyframes navIndicator {
    from { width: 0; opacity: 0; }
    to { width: 60%; opacity: 1; }
}

/* ===== Card Shine Effect ===== */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.08),
        transparent
    );
    z-index: 1;
    pointer-events: none;
    transition: left 0.6s ease;
}
.card:hover::before {
    left: 125%;
}
.story-card:not(.featured)::before {
    content: '';
    position: absolute;
    top: 0;
    left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.06),
        transparent
    );
    z-index: 1;
    pointer-events: none;
    transition: left 0.6s ease;
}
.story-card:not(.featured):hover::before {
    left: 125%;
}

/* ===== Focus Ring Enhancement ===== */
:focus-visible {
    outline: 2px solid var(--accent-red);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}
.btn:focus-visible {
    outline: 2px solid var(--accent-red);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.15);
}

/* ===== Hero Stat Hover ===== */
.hero-stat {
    transition: transform var(--transition-base);
}
.hero-stat:hover {
    transform: translateY(-2px);
}
.hero-stat-num {
    transition: transform var(--transition-base);
}
.hero-stat:hover .hero-stat-num {
    transform: scale(1.05);
}

/* ===== Filter Chip Active Glow ===== */
.filter-chip.active {
    box-shadow: 0 2px 8px rgba(225, 29, 72, 0.25);
}

/* ===== Story Card Checkbox Enhancement ===== */
.story-checkbox {
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.story-card:hover .story-checkbox {
    opacity: 1;
}

/* ===== Smooth Page Load ===== */
.content-area {
    animation: contentFadeIn 0.4s ease both;
}
@keyframes contentFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
*::-webkit-scrollbar-thumb:hover { background: var(--accent-red); }

.theme-btn { font-size: 1.3rem; }

/* ===== Web Interface Guidelines 合规性修复 ===== */

/* 1. Focus States - 确保所有交互元素有可见焦点 */
*:focus-visible {
    outline: 2px solid var(--primary, #dc2626);
    outline-offset: 2px;
}

/* 2. 动画尊重 prefers-reduced-motion */
@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;
    }
    .skeleton { display: none; }
    .page-transition { display: none; }
    .reading-progress { display: none; }
}

/* 3. 触摸优化 */
button, a, input, select, textarea {
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

/* 4. 模态框/抽屉滚动 containment */
.modal-overlay, .sidebar-overlay {
    overscroll-behavior: contain;
}

/* 5. 数字列使用等宽数字 */
.stat-number, .counter, td[data-type="number"] {
    font-variant-numeric: tabular-nums;
}

/* 6. 标题文字平衡 */
h1, h2, h3 {
    text-wrap: balance;
}

/* 7. 内容溢出处理 */
.story-card .card-title,
.story-card .card-description,
.list-item .item-title,
.list-item .item-description {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 8. Flex子元素允许截断 */
.flex-truncate {
    min-width: 0;
}

/* 10. 滚动条优化 */
.sidebar::-webkit-scrollbar {
    width: 4px;
}
.sidebar::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.2);
    border-radius: 2px;
}
body.dark .sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.15);
}

/* 11. Skip Link for accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--primary, #dc2626);
    color: white;
    padding: 8px 16px;
    z-index: 100000;
    font-size: 14px;
    text-decoration: none;
    border-radius: 0 0 8px 0;
}
.skip-link:focus {
    top: 0;
}

/* 12. 表单标签关联 */
label {
    cursor: pointer;
}

/* 13. 图片懒加载占位 */
img.lazy-img {
    background: var(--bg-tertiary, #f1f5f9);
}
body.dark img.lazy-img {
    background: rgba(255,255,255,0.05);
}

/* 14. Toast通知 - aria-live 在 HTML 中实现 (role="region" aria-live="polite") */
/* 实际 a11y 属性在 base.html 中，样式见上方 .toast 规则 */

/* 15. 空状态处理 */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--text-secondary, #64748b);
}
.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

/* ===== 琼崖革命主题扩展样式 ===== */

/* 历史照片滤镜 */
.photo-historical {
    filter: sepia(0.8) contrast(1.1) brightness(0.9);
    transition: filter 0.3s ease;
}
.photo-historical:hover {
    filter: unset;
}

/* 统计数字专用字体 */
.stat-value {
    font-family: var(--font-mono-display);
}

/* ===== 沉浸式体验组件样式 ===== */

/* 背景音乐控件 */
.bgm-control {
    position: fixed;
    bottom: calc(var(--space-20) + var(--safe-bottom));
    right: var(--space-7);
    z-index: var(--z-dropdown);
}
.bgm-toggle-btn {
    width: var(--space-12);
    height: var(--space-12);
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--accent-red), var(--secondary-red));
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg), 0 4px 16px rgba(196,30,58,0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    animation: bgmFloat 3s ease-in-out infinite;
}
.bgm-toggle-btn:hover { transform: scale(1.1); }
.bgm-toggle-btn.playing { animation: bgmSpin 12s linear infinite, bgmFloat 3s ease-in-out infinite; }
.bgm-toggle-btn.paused { animation-play-state: paused; }
@keyframes bgmFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
@keyframes bgmSpin { to{transform:rotate(360deg)} }
@media (prefers-reduced-motion: reduce) {
    .bgm-toggle-btn.playing { animation: none; }
}

/* 影院模式按钮 */
.cinema-mode-btn {
    background: none;
    border: 1px solid var(--card-border);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1rem;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.cinema-mode-btn:hover {
    border-color: var(--accent-red);
    background: rgba(196, 30, 58, 0.06);
}

/* 影院模式激活状态 */
body.cinema-mode .topnav { opacity: 0.15; pointer-events: none; }
body.cinema-mode .sidebar { opacity: 0.08; pointer-events: none; }
body.cinema-mode .header { opacity: 0.15; pointer-events: none; }
body.cinema-mode .content-area { max-width: none; padding: var(--space-5); }
body.cinema-mode .page-title,
body.cinema-mode .breadcrumb { opacity: 0.3; }
body.cinema-mode { background: #000 !important; }
body.cinema-mode * { color: rgba(255,255,255,0.85) !important; }
body.cinema-mode .cinema-mode-btn {
    opacity: 1 !important;
    position: fixed;
    bottom: calc(var(--space-20) + var(--safe-bottom));
    right: var(--space-7);
    z-index: 9999;
    background: rgba(225,29,72,0.9);
    color: white;
    border: none;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
}

/* ===== 响应式断点统一定义 (D-23/S-23) =====
   全站仅使用 4 个标准断点：
     - mobile  : max-width: 480px   （手机竖屏）
     - tablet  : max-width: 768px   （平板 / 手机横屏）
     - laptop  : max-width: 1024px  （小笔记本 / 平板横屏）
     - desktop : max-width: 1280px  （标准笔记本）

   历史断点（1366 / 1200 / 900）已分别合并到 desktop/laptop/tablet。
   新增响应式样式请遵守此分级。
===== 响应式与性能优化规则 ===== */

/* 1280px 及以下：标准笔记本适配（原 1366px 合并） */
@media (max-width: 1280px) {
    :root { --content-max: 1280px; }
    .stories-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .videos-masonry { columns: 3; }
}

/* 1080p 完美显示 */
@media (min-width: 1920px) {
    :root { --content-max: 1800px; }
    .hero-title { font-size: 3rem; }
    .stories-grid { grid-template-columns: repeat(4, 1fr); }
    .features-grid { grid-template-columns: repeat(3, 1fr); }
    .videos-masonry { columns: 4; }
}

/* 超宽屏：最大化利用屏幕空间 */
@media (min-width: 2200px) {
    :root { --content-max: 2000px; }
    .content-area { padding: var(--space-8) var(--space-6); }
}

/* 触屏设备优化 */
@media (hover: none) and (pointer: coarse) {
    button, a, .nav-link, .filter-chip,
    .btn, .pagination-btn {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .nav-link { padding: var(--space-3) var(--space-4); }
    .story-checkbox { width: 2rem; height: 2rem; }
}

/* 小屏幕汉堡菜单增强 */
@media (max-width: 768px) {
    :root { --sidebar-width: 0; }
    .main-content { margin-left: 0; padding-top: var(--header-height); }
    .mobile-menu-btn { display: flex; }
    .videos-masonry { columns: 2; }
    .detail-panel { display: none; }
    .char-main { flex-direction: column; }
    .graph-container { min-height: 25rem; }
}

@media (hover: none) and (pointer: coarse) {
    .btn, .nav-link, .filter-tag, .pagination-btn, .stat-card,
    .back-to-top, .lang-switcher, .dark-toggle,
    .topnav-link, .mobile-menu-btn, .card-action-btn,
    .category-tab, .breadcrumb a,
    .source-video-item, .gen-type-item,
    .story-link-item, .structure-card, .filter-btn,
    .view-toggle-btn, .action-btn {
        min-height: 44px;
    }
    .btn-sm { min-height: 44px; padding: 8px 14px; }
}

/* 图片懒加载 WebP 提示 */
img[loading="lazy"] { opacity: 0; transition: opacity 0.4s ease; }
img[loading="lazy"].loaded { opacity: 1; }

/* 人物关系图骨架屏增强 */
.graph-skeleton .skeleton-circle {
    animation: shimmer 1.5s ease-in-out infinite;
    background: linear-gradient(90deg, var(--color-neutral-100) 25%, var(--color-neutral-200) 50%, var(--color-neutral-100) 75%);
    background-size: 200% 100%;
}

/* 虚拟滚动提示（超过50项时） */
.virtual-scroll-hint {
    text-align: center;
    padding: 20px;
    color: var(--content-text-tertiary);
    font-size: 0.85rem;
}

/* ===== 政务仪式感组件 (D-02) ===== */
.section-emblem {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, var(--color-gold-100) 0%, var(--card-bg) 100%);
    border: 1px solid var(--color-gold-200);
    border-left: 3px solid var(--accent-red);
    border-radius: var(--radius-md);
    font-family: var(--font-serif);
    color: var(--content-text);
    font-weight: 600;
}
.section-emblem .icon { width: 1.25rem; height: 1.25rem; color: var(--accent-red); flex-shrink: 0; }
.section-emblem .text { font-size: 0.95rem; }
body.dark .section-emblem {
    background: linear-gradient(135deg, rgba(212, 168, 75, 0.12) 0%, var(--card-bg) 100%);
}

.badge-red-star {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--accent-red);
    color: white;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 600;
    line-height: 1.4;
}
.badge-red-star .icon { width: 12px; height: 12px; }

.ribbon-banner {
    position: relative;
    padding: var(--space-6) var(--space-8);
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-gold-100) 100%);
    border-left: 4px solid var(--accent-red);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    overflow: hidden;
}
.ribbon-banner::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 80px; height: 100%;
    background: var(--accent-red);
    opacity: 0.06;
    transform: skewX(-15deg);
    transform-origin: top right;
}
.ribbon-banner .title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-red);
    margin: 0 0 var(--space-2) 0;
    position: relative;
    z-index: 1;
}
.ribbon-banner .subtitle {
    font-size: 0.95rem;
    color: var(--content-text-secondary);
    position: relative;
    z-index: 1;
}
body.dark .ribbon-banner {
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.15) 0%, rgba(212, 168, 75, 0.08) 100%);
}

.timeline-event {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    border-left: 2px solid var(--color-primary-200);
    padding-left: var(--space-6);
    position: relative;
    margin-left: var(--space-2);
}
.timeline-event::before {
    content: '';
    position: absolute;
    left: -7px;
    top: var(--space-5);
    width: 12px;
    height: 12px;
    background: var(--accent-red);
    border-radius: 50%;
    border: 2px solid var(--card-bg);
    box-shadow: 0 0 0 1px var(--accent-red);
}
.timeline-event .date {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--accent-red);
    font-size: 0.95rem;
}
.timeline-event .title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--content-text);
    margin-bottom: var(--space-1);
}
.timeline-event .desc {
    font-size: 0.875rem;
    color: var(--content-text-secondary);
    line-height: 1.6;
}
body.dark .timeline-event { border-left-color: var(--color-primary-700); }
body.dark .timeline-event::before { border-color: var(--card-bg); }

/* 打印样式隐藏非必要元素 */
@media print {
    .topnav, .sidebar, .header, .bgm-control, .cinema-mode-btn, .back-to-top,
    .mobile-menu-btn, .dark-toggle, .qa-fab, .skip-link, .breadcrumb,
    .filter-bar, .action-bar, .pagination { display: none !important; }
    .main-content { margin-left: 0 !important; padding-top: 0 !important; }
    body { background: white !important; color: black !important; font-size: 12pt; }
    .content-area { padding: 0 !important; max-width: 100% !important; }
    a { color: black !important; text-decoration: underline; }
    a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #555; }
    a[href^="#"]::after, a[href^="javascript"]::after { content: none; }
    img { max-width: 100% !important; page-break-inside: avoid; }
    h1, h2, h3 { page-break-after: avoid; }
    .card, .stat-card, .structure-card { border: 1px solid #ccc !important; box-shadow: none !important; break-inside: avoid; }
    table { border-collapse: collapse; }
    th, td { border: 1px solid #ccc; padding: 4px 8px; }
}

/* ===== 收藏系统样式 ===== */
.favorite-btn {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: 50%;
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
}
.favorite-btn:hover {
    background: rgba(225, 29, 72, 0.08);
    transform: scale(1.15);
}
.favorite-btn:focus-visible {
    outline: 3px solid var(--gold);
    outline-offset: 2px;
}
.favorite-btn.favorited {
    color: #e31b23;
}
.favorite-btn.favorited span {
    animation: heartBeat 0.4s ease;
}
@keyframes heartBeat {
    0% { transform: scale(1); }
    25% { transform: scale(1.3); }
    50% { transform: scale(0.9); }
    75% { transform: scale(1.2); }
    100% { transform: scale(1); }
}
.favorite-btn.pulse {
    animation: pulseRing 0.3s ease;
}
@keyframes pulseRing {
    0% { box-shadow: 0 0 0 0 rgba(225, 29, 72, 0.4); }
    100% { box-shadow: 0 0 0 12px rgba(225, 29, 72, 0); }
}

.favorite-count {
    font-size: 0.75rem;
    color: var(--content-text-secondary);
    margin-left: var(--space-1);
    font-family: var(--font-mono-display);
}

.card-with-favorite {
    position: relative;
}
.card-favorite-badge {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    z-index: 5;
}

.favorite-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}
.favorite-card:hover {
    border-color: var(--accent-red);
    box-shadow: var(--shadow-md);
}
.favorite-card-img {
    width: 5rem;
    height: 3.75rem;
    border-radius: var(--radius-md);
    object-fit: cover;
    flex-shrink: 0;
}
.favorite-card-content {
    flex: 1;
    min-width: 0;
}
.favorite-card-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: var(--space-1);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.favorite-card-meta {
    font-size: 0.8rem;
    color: var(--content-text-secondary);
}

/* 深色模式收藏按钮 */
body.dark .favorite-btn:hover {
    background: rgba(225, 29, 72, 0.15);
}

/* ===== 无障碍增强 ===== */

/* 老照片支持键盘focus触发 */
.photo-historical:focus {
    filter: unset;
}

/* 跳转到主内容链接 */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--accent-red);
    color: white;
    padding: var(--space-3) var(--space-6);
    z-index: 100000;
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
    transition: top 0.2s;
}
.skip-link:focus {
    top: 0;
}

/* 焦点陷阱指示器（用于模态框） */
.focus-trap-indicator {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --card-border: #000;
        --content-text: #000;
        --content-bg: #fff;
    }
    body.dark {
        --card-border: #fff;
        --content-text: #fff;
        --content-bg: #000;
    }
}

/* 键盘快捷键帮助面板 (D-17/S-20) */
.shortcuts-help {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: var(--z-modal, 1000);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base, 200ms), visibility var(--transition-base, 200ms);
}
.shortcuts-help.active { opacity: 1; visibility: visible; }
.shortcuts-help-content {
    background: var(--card-bg, #fff);
    color: var(--content-text, #222);
    border-radius: var(--radius-xl, 16px);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
    max-width: 720px;
    width: 100%;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: translateY(12px) scale(0.98);
    transition: transform var(--transition-base, 200ms);
}
.shortcuts-help.active .shortcuts-help-content { transform: translateY(0) scale(1); }
.shortcuts-help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--card-border, #e5e5e5);
}
.shortcuts-help-header h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--content-text, #222);
}
.shortcuts-help-close {
    background: transparent;
    border: 0;
    padding: var(--space-2);
    border-radius: var(--radius-full, 9999px);
    cursor: pointer;
    color: var(--content-text-secondary, #666);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast, 150ms);
}
.shortcuts-help-close:hover { background: var(--card-border, #e5e5e5); color: var(--content-text, #222); }
.shortcuts-help-close:focus-visible {
    outline: 2px solid var(--accent-red, #c41e3a);
    outline-offset: 2px;
}
.shortcuts-help-close .icon { width: 20px; height: 20px; }
.shortcuts-help-body {
    padding: var(--space-5) var(--space-6);
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-5);
}
.shortcuts-group h3 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-red, #c41e3a);
    margin: 0 0 var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--card-border, #e5e5e5);
}
.shortcuts-group dl { margin: 0; }
.shortcut-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-2) 0;
}
.shortcut-row dt { display: flex; gap: 4px; flex-shrink: 0; }
.shortcut-row dd { margin: 0; color: var(--content-text-secondary, #666); font-size: 0.9rem; text-align: right; }
kbd {
    display: inline-block;
    min-width: 28px;
    padding: 2px 8px;
    font-family: var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace);
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.2;
    color: var(--content-text, #222);
    background: var(--content-bg, #f7f7f7);
    border: 1px solid var(--card-border, #d0d0d0);
    border-bottom-width: 2px;
    border-radius: var(--radius-sm, 6px);
    text-align: center;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}
.shortcuts-help-footer {
    padding: var(--space-3) var(--space-6);
    border-top: 1px solid var(--card-border, #e5e5e5);
    background: var(--content-bg, #fafafa);
    font-size: 0.82rem;
    color: var(--content-text-secondary, #666);
}
@media (max-width: 480px) {
    .shortcuts-help-body { grid-template-columns: 1fr; padding: var(--space-4); }
    .shortcuts-help-header, .shortcuts-help-footer { padding-left: var(--space-4); padding-right: var(--space-4); }
}
@media (prefers-reduced-motion: reduce) {
    .shortcuts-help, .shortcuts-help-content { transition: none; }
    .shortcuts-help.active .shortcuts-help-content { transform: none; }
}