/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --card-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --glass-bg: rgba(255, 255, 255, 0.98);
    --glass-border: rgba(255, 255, 255, 0.18);
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 星空背景 */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.star {
    position: absolute;
    width: 3px;
    height: 3px;
    background: white;
    border-radius: 50%;
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* 动态网格 */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* 发光球体 */
.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    z-index: 0;
}

.glow-orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(99, 102, 241, 0.25);
    top: -250px;
    left: -250px;
    animation: orbPulse 10s ease-in-out infinite;
}

.glow-orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(217, 70, 239, 0.2);
    bottom: -200px;
    right: -200px;
    animation: orbPulse 8s ease-in-out infinite reverse;
}

.glow-orb-3 {
    width: 300px;
    height: 300px;
    background: rgba(6, 182, 212, 0.15);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: orbPulse 12s ease-in-out infinite;
}

@keyframes orbPulse {
    0%, 100% { transform: scale(1) translate(-50%, -50%); opacity: 0.5; }
    50% { transform: scale(1.3) translate(-50%, -50%); opacity: 0.8; }
}

/* 鼠标跟随光晕 */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
}

/* 头部设计 */
header {
    text-align: center;
    padding: 80px 20px;
    margin-bottom: 30px;
    position: relative;
}

.header-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(139, 92, 246, 0.3) 0%, transparent 70%);
    pointer-events: none;
    border-radius: 50%;
    filter: blur(60px);
}

.logo-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
    position: relative;
}

.logo-icon {
    width: 90px;
    height: 90px;
    background: var(--primary-gradient);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 42px;
    box-shadow:
        0 10px 40px rgba(99, 102, 241, 0.5),
        inset 0 -5px 20px rgba(0, 0, 0, 0.2);
    animation: logoFloat 4s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s ease-in-out infinite;
}

@keyframes shine {
    0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(3deg); }
}

header h1 {
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 30%, #f0abfc 70%, #fff 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 3px;
    margin-bottom: 15px;
    animation: textShimmer 5s ease-in-out infinite;
    text-shadow: 0 0 40px rgba(139, 92, 246, 0.5);
}

@keyframes textShimmer {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

header p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 300;
    letter-spacing: 2px;
}

/* 搜索框 */
.search-box {
    max-width: 750px;
    margin: 50px auto;
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 25px 35px 25px 70px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 60px;
    font-size: 1.15rem;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(30px);
    color: white;
    outline: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.search-box input:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(139, 92, 246, 0.8);
    box-shadow:
        0 15px 60px rgba(139, 92, 246, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: translateY(-3px) scale(1.02);
}

.search-icon {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.search-box input:focus + .search-icon {
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

/* 导航标签 */
.nav-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin: 50px 0;
    padding: 25px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.nav-tab {
    padding: 16px 32px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.nav-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: all 0.4s ease;
    z-index: -1;
}

.nav-tab::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 3px;
    transition: transform 0.3s ease;
}

.nav-tab:hover {
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.4);
    border-color: rgba(139, 92, 246, 0.5);
}

.nav-tab:hover::before {
    left: 0;
    opacity: 1;
}

.nav-tab:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-tab.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    box-shadow:
        0 15px 45px rgba(139, 92, 246, 0.6),
        inset 0 -3px 10px rgba(0, 0, 0, 0.2);
    transform: translateY(-3px);
    z-index: 2;
}

.nav-tab.active::before {
    opacity: 0;
}

/* 内容区域 */
.content-section {
    background: var(--glass-bg);
    border-radius: 30px;
    padding: 50px;
    margin-top: 40px;
    box-shadow: var(--card-shadow);
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: sectionSlideUp 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--primary-gradient);
}

@keyframes sectionSlideUp {
    from { opacity: 0; transform: translateY(50px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

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

.section-title {
    font-family: 'Poppins', 'Noto Sans SC', sans-serif;
    font-size: 2.3rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 40px;
    padding-bottom: 25px;
    border-bottom: 3px solid transparent;
    border-image: var(--primary-gradient) 1;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 3px;
}

.subsection {
    margin: 40px 0;
}

.subsection-title {
    color: #5b21b6;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 35px 0 25px 0;
    padding: 18px 25px;
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 50%, #e9d5ff 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 5px 20px rgba(139, 92, 246, 0.15);
    transition: all 0.3s ease;
}

.subsection-title:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.25);
}

.subsection-title::before {
    content: '📍';
    font-size: 1.3rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.content-list {
    list-style: none;
    padding-left: 0;
}

.content-list li {
    padding: 20px 25px;
    margin: 15px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 16px;
    border-left: 6px solid #6366f1;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-size: 1.05rem;
    line-height: 1.7;
    position: relative;
    overflow: hidden;
}

.content-list li::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.content-list li:hover::before {
    left: 100%;
}

.content-list li:hover {
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    transform: translateX(15px) scale(1.01);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.25);
}

.content-list li strong {
    color: #7c3aed;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

/* 词标签 */
.word-tag {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    margin: 8px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow:
        0 5px 20px rgba(239, 68, 68, 0.4),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.word-tag::before {
    content: '🚫';
    margin-right: 6px;
    font-size: 0.9rem;
}

.word-tag:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 35px rgba(239, 68, 68, 0.6);
}

.word-tag.safe {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    box-shadow:
        0 5px 20px rgba(34, 197, 94, 0.4),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
}

.word-tag.safe::before {
    content: '✅';
}

.word-tag.safe:hover {
    box-shadow: 0 10px 35px rgba(34, 197, 94, 0.6);
}

.word-tag.warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow:
        0 5px 20px rgba(245, 158, 11, 0.4),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
}

.word-tag.warning::before {
    content: '⚠️';
}

/* 置顶公告 */
.top-notice {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 50%, #fca5a5 100%);
    padding: 30px 35px;
    border-radius: 20px;
    margin: 25px 0;
    border: 3px solid #dc2626;
    position: relative;
    box-shadow:
        0 10px 40px rgba(220, 38, 38, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    animation: noticePulse 3s ease-in-out infinite;
}

@keyframes noticePulse {
    0%, 100% { box-shadow: 0 10px 40px rgba(220, 38, 38, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.5); }
    50% { box-shadow: 0 15px 60px rgba(220, 38, 38, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.5); }
}

.top-notice::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(220, 38, 38, 0.1) 0%, transparent 70%);
    animation: rotateBg 10s linear infinite;
}

@keyframes rotateBg {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.top-notice:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow:
        0 20px 60px rgba(220, 38, 38, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.notice-icon {
    font-size: 4rem;
    flex-shrink: 0;
    animation: iconShake 2s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

@keyframes iconShake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

.notice-content {
    flex: 1;
    position: relative;
    z-index: 1;
}

.notice-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #dc2626;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 0 2px 10px rgba(220, 38, 38, 0.3);
}

.notice-title::before {
    content: '🔴';
    animation: blink 1s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.notice-text {
    color: #991b1b;
    line-height: 2;
    font-size: 1.05rem;
}

.notice-text p {
    margin: 10px 0;
    font-weight: 500;
}

.notice-text strong {
    color: #dc2626;
    font-weight: 700;
    font-size: 1.1rem;
}

.notice-highlight {
    margin-top: 20px !important;
    padding: 15px 20px;
    background: rgba(220, 38, 38, 0.15);
    border-radius: 10px;
    border-left: 4px solid #dc2626;
    font-weight: 700 !important;
    color: #7f1d1d !important;
}

/* 引用卡片 */
.quote-card {
    background: linear-gradient(135deg, #faf5ff 0%, #f3e8ff 50%, #ede9fe 100%);
    padding: 30px 35px;
    border-radius: 20px;
    margin: 25px 0;
    border-left: 8px solid #a855f7;
    position: relative;
    box-shadow:
        0 10px 40px rgba(168, 85, 247, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
}

.quote-card::before {
    content: '"';
    font-size: 6rem;
    color: #a855f7;
    position: absolute;
    top: -20px;
    left: 20px;
    opacity: 0.15;
    font-family: Georgia, serif;
    line-height: 1;
}

.quote-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.quote-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 20px 60px rgba(168, 85, 247, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.quote-card:hover::after {
    opacity: 1;
}

.quote-card p {
    position: relative;
    z-index: 1;
    line-height: 1.9;
    color: #5b21b6;
    font-size: 1.05rem;
}

/* 应援词 */
.cheer-item {
    background: linear-gradient(135deg, #fff1f2 0%, #ffe4e6 50%, #fecdd3 100%);
    padding: 22px 25px;
    margin: 15px 0;
    border-radius: 18px;
    font-size: 1.05rem;
    border: 2px solid rgba(244, 63, 94, 0.15);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 5px 20px rgba(244, 63, 94, 0.1);
}

.cheer-item:hover {
    background: linear-gradient(135deg, #ffe4e6 0%, #fecdd3 50%, #fda4af 100%);
    transform: scale(1.03) rotate(-1deg);
    box-shadow: 0 10px 40px rgba(244, 63, 94, 0.3);
    border-color: rgba(244, 63, 94, 0.4);
}

.cheer-item:nth-child(even):hover {
    transform: scale(1.03) rotate(1deg);
}

/* 惩罚分类 */
.punish-category {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 50%, #fecaca 100%);
    padding: 30px;
    border-radius: 20px;
    margin: 30px 0;
    border: 2px solid rgba(239, 68, 68, 0.15);
    box-shadow: 0 10px 40px rgba(239, 68, 68, 0.1);
    transition: all 0.3s ease;
}

.punish-category:hover {
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: 0 15px 50px rgba(239, 68, 68, 0.2);
}

.punish-category h4 {
    color: #dc2626;
    margin-bottom: 25px;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
}

.punish-category h4::before {
    content: '🎯';
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.punish-item {
    background: white;
    padding: 20px 22px;
    margin: 15px 0;
    border-radius: 14px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border-left: 4px solid #f87171;
}

.punish-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 30px rgba(220, 38, 38, 0.2);
    border-left-color: #dc2626;
}

.punish-item strong {
    color: #dc2626;
    font-weight: 700;
}

.bgm-tag {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
    border-radius: 25px;
    font-size: 0.85rem;
    margin-left: 12px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
    transition: all 0.3s ease;
}

.bgm-tag::before {
    content: '🎵';
    margin-right: 5px;
    font-size: 0.8rem;
}

.bgm-tag:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(124, 58, 237, 0.6);
}

/* 高亮 */
.highlight {
    background: linear-gradient(135deg, #fef08a 0%, #fde047 100%);
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 700;
    color: #854d0e;
    box-shadow: 0 2px 10px rgba(253, 224, 71, 0.4);
    animation: highlightPulse 1.5s ease-in-out infinite;
}

@keyframes highlightPulse {
    0%, 100% { box-shadow: 0 2px 10px rgba(253, 224, 71, 0.4); }
    50% { box-shadow: 0 4px 20px rgba(253, 224, 71, 0.7); }
}

/* 无结果提示 */
.no-results {
    text-align: center;
    padding: 100px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.4rem;
    animation: fadeIn 0.5s ease;
}

.no-results::before {
    content: '🔍';
    font-size: 5rem;
    display: block;
    margin-bottom: 25px;
    animation: searchBounce 2s ease-in-out infinite;
}

@keyframes searchBounce {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-10px) scale(1.1); }
}

/* 页脚 */
footer {
    text-align: center;
    padding: 60px 20px;
    color: rgba(255, 255, 255, 0.65);
    font-size: 1rem;
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

footer p {
    margin: 10px 0;
    letter-spacing: 1px;
}

footer::before {
    content: '';
    display: block;
    width: 100px;
    height: 3px;
    background: var(--primary-gradient);
    margin: 0 auto 20px;
    border-radius: 3px;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #6366f1, #a855f7);
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #8b5cf6, #d946ef);
}

/* 快速导航 */
.quick-nav {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 100;
}

.quick-nav-btn {
    width: 50px;
    height: 50px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quick-nav-btn:hover {
    background: var(--primary-gradient);
    transform: scale(1.15);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.quick-nav-btn.active {
    background: var(--primary-gradient);
    box-shadow: 0 5px 20px rgba(139, 92, 246, 0.6);
}

/* 回到顶部 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--primary-gradient);
    border: 3px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    box-shadow: 0 10px 40px rgba(139, 92, 246, 0.5);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top::before {
    content: '↑';
    font-weight: 700;
    transition: transform 0.3s ease;
}

.back-to-top::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--primary-gradient);
    z-index: -1;
    animation: btnPulse 2s ease-in-out infinite;
}

@keyframes btnPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.3); opacity: 0; }
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    animation: btnBounce 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes btnBounce {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.back-to-top:hover {
    transform: translateY(-8px) scale(1.15);
    box-shadow: 0 15px 60px rgba(139, 92, 246, 0.8);
}

.back-to-top:hover::before {
    transform: translateY(-3px);
}

/* 统计卡片 */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.stat-item {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    padding: 20px 35px;
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    text-align: center;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(139, 92, 246, 0.5);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-top: 5px;
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 80px;
    height: 80px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: #a855f7;
    border-radius: 50%;
    animation: spinner 1s linear infinite;
}

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

.loading-text {
    color: white;
    font-size: 1.2rem;
    margin-top: 20px;
    letter-spacing: 3px;
    animation: textPulse 1.5s ease-in-out infinite;
}

@keyframes textPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* 提示框 */
.toast {
    position: fixed;
    bottom: 100px;
    right: 30px;
    background: var(--glass-bg);
    padding: 15px 25px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(150%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
}

.toast.show {
    transform: translateX(0);
}

/* 响应式 */
@media (max-width: 1024px) {
    .quick-nav {
        display: none;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2.2rem;
    }

    .content-section {
        padding: 30px 20px;
    }

    .nav-tab {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .subsection-title {
        font-size: 1.25rem;
    }

    .stats-bar {
        gap: 15px;
    }

    .stat-item {
        padding: 15px 25px;
    }

    .stat-number {
        font-size: 2rem;
    }
}