/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 自定义属性 - ACG二次元风格 */
:root {
    --bg-primary: #fff5f8;
    --bg-secondary: #fef0f5;
    --bg-card: #ffffff;
    --bg-hover: #fff9fb;
    --text-primary: #2d1b3d;
    --text-secondary: #6b5b7d;
    --accent-pink: #ff6b9d;
    --accent-purple: #a855f7;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-orange: #ff8c42;
    --accent-yellow: #fbbf24;
    --border-color: #f0d6e8;
    --shadow-soft: 0 4px 20px rgba(255, 107, 157, 0.15);
    --shadow-hover: 0 8px 30px rgba(255, 107, 157, 0.25);
    --gradient-primary: linear-gradient(135deg, #ff6b9d 0%, #a855f7 100%);
    --gradient-secondary: linear-gradient(135deg, #ff8c42 0%, #ff6b9d 100%);
    --gradient-sky: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --gradient-sunset: linear-gradient(135deg, #fbbf24 0%, #ff8c42 100%);
    --gradient-bg: linear-gradient(135deg, #fff5f8 0%, #fef0f5 50%, #f0f9ff 100%);
}

/* 基础样式 */
body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 107, 157, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: float-bg 20s ease-in-out infinite;
}

@keyframes float-bg {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 10px;
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: linear-gradient(135deg, #ffffff 0%, #fff5f8 100%);
    backdrop-filter: blur(20px);
    border-bottom: 3px solid transparent;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 4px 30px rgba(255, 107, 157, 0.15);
    position: relative;
}

.navbar::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    z-index: 1;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 85px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 30px;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: none;
    letter-spacing: 0;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-logo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -10px;
    width: 8px;
    height: 8px;
    background: var(--accent-pink);
    border-radius: 50%;
    transform: translateY(-50%) scale(0);
    transition: transform 0.3s ease;
    box-shadow: 0 0 10px rgba(255, 107, 157, 0.5);
}

.nav-logo:hover::before {
    transform: translateY(-50%) scale(1);
}

.nav-logo::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 0.3s ease;
    box-shadow: 0 2px 10px rgba(255, 107, 157, 0.4);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo:hover::after {
    transform: scaleX(1);
}

.nav-logo i {
    font-size: 34px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 3px 10px rgba(255, 107, 157, 0.4));
    animation: bounce-icon 2s ease-in-out infinite;
}

@keyframes bounce-icon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    padding: 12px 20px;
    text-transform: none;
    letter-spacing: 0;
    border-radius: 50px;
    display: block;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    border-radius: 50px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.3);
}

.nav-menu a:hover {
    color: white;
    transform: translateY(-2px);
}

.nav-menu a:hover::before {
    opacity: 1;
}

.nav-menu a:active {
    transform: translateY(0);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    z-index: 1001;
    position: relative;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.nav-toggle:hover {
    background: rgba(255, 107, 157, 0.1);
}

.nav-toggle:active {
    background: rgba(255, 107, 157, 0.2);
}

.nav-toggle span {
    width: 30px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(255, 107, 157, 0.3);
    pointer-events: none;
}

/* 公告滚动条 */
.announcement-bar {
    background: var(--bg-card);
    border-bottom: 2px solid var(--border-color);
    margin-top: 0;
    overflow: hidden;
    position: fixed;
    top: 85px;
    left: 0;
    right: 0;
    z-index: 998;
    width: 100%;
    will-change: transform;
    transform: translateZ(0);
}

.announcement-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 0 0 2px 2px;
}

.announcement-container {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    gap: 16px;
}

.announcement-container i {
    color: var(--accent-pink);
    font-size: 20px;
    filter: drop-shadow(0 2px 4px rgba(255, 107, 157, 0.3));
}

.announcement-content {
    flex: 1;
    overflow: hidden;
}

.announcement-text {
    display: flex;
    gap: 60px;
    animation: scroll-announcement 30s linear infinite;
}

.announcement-text span {
    white-space: nowrap;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
}

.announcement-controls {
    display: flex;
    gap: 8px;
}

.control-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

@keyframes scroll-announcement {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
    padding-top: calc(85px + 48px); /* 导航栏高度 + 公告栏高度 */
    margin-top: 0;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(255, 107, 157, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    animation: pulse-glow 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.hero-container {
    max-width: 900px;
    padding: 0 24px;
    z-index: 1;
    position: relative;
}

.hero-title {
    margin-bottom: 32px;
}

.title-main {
    display: block;
    font-size: 5.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    animation: fadeInUp 1s ease-out;
    text-transform: none;
    letter-spacing: 0;
    line-height: 1.1;
    filter: drop-shadow(0 4px 20px rgba(255, 107, 157, 0.3));
}

.title-sub {
    display: block;
    font-size: 1.6rem;
    color: var(--text-secondary);
    font-weight: 500;
    animation: fadeInUp 1s ease-out 0.2s both;
    letter-spacing: 0;
}

.hero-description {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
    animation: fadeInUp 1s ease-out 0.4s both;
    line-height: 1.8;
}

.highlight {
    color: var(--accent-pink);
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(255, 107, 157, 0.3);
}

.hero-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.6s both;
    flex-wrap: wrap;
}

.btn {
    padding: 18px 40px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0;
    box-shadow: var(--shadow-soft);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: white;
    color: var(--accent-pink);
    border: 2px solid var(--accent-pink);
}

.btn-secondary:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-hover);
}

/* 特色功能区域 */
.features {
    padding: 120px 0;
    background: var(--bg-secondary);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 3.2rem;
    margin-bottom: 80px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    text-transform: none;
    letter-spacing: 0;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 5px;
    background: var(--gradient-primary);
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(255, 107, 157, 0.3);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    padding: 48px 32px;
    border-radius: 24px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    border-radius: 24px 24px 0 0;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-12px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: linear-gradient(135deg, #ffffff 0%, #fff9fb 100%);
}

.feature-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 32px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: white;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
    position: relative;
}

.feature-icon::after {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.2;
    z-index: -1;
    animation: pulse-ring 2s infinite;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-hover);
}

.feature-card h3 {
    font-size: 1.6rem;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 700;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 15px;
}

@keyframes pulse-ring {
    0% { transform: scale(0.8); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.1; }
    100% { transform: scale(0.8); opacity: 0.3; }
}

/* 数据统计区域 */
.stats {
    padding: 120px 0;
    background: var(--bg-primary);
    position: relative;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 48px;
}

.stat-item {
    text-align: center;
    padding: 48px 24px;
    background: var(--bg-card);
    border-radius: 24px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.stat-item:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: linear-gradient(135deg, #ffffff 0%, #fff9fb 100%);
}

.stat-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 32px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 42px;
    color: white;
    box-shadow: var(--shadow-soft);
    transition: all 0.3s ease;
    position: relative;
}

.stat-item:hover .stat-icon {
    transform: scale(1.1) rotate(10deg);
    box-shadow: var(--shadow-hover);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-transform: none;
    letter-spacing: 0;
    font-weight: 600;
}

/* FAQ区域 */
.faq {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    margin-bottom: 24px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow-soft);
}

.faq-item:hover {
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.faq-question {
    padding: 28px 32px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    background: var(--bg-card);
}

.faq-question:hover {
    background: var(--bg-hover);
    color: var(--accent-pink);
}

.faq-question i {
    color: var(--accent-pink);
    transition: transform 0.3s ease;
    font-size: 18px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 32px 28px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 支持的IP展示区 */
.supported-ip {
    padding: 120px 0;
    background: var(--bg-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.3rem;
    margin-bottom: 80px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.ip-categories {
    display: flex;
    flex-direction: column;
    gap: 64px;
}

.ip-category {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 48px 40px;
    box-shadow: var(--shadow-soft);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.ip-category:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
}

.category-title {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 16px;
    text-align: center;
    justify-content: center;
    text-transform: none;
    letter-spacing: 0;
}

.category-title i {
    color: var(--accent-pink);
    font-size: 2.2rem;
    filter: drop-shadow(0 2px 8px rgba(255, 107, 157, 0.3));
}

.ip-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
}

.ip-item {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    box-shadow: var(--shadow-soft);
}

.ip-item:hover {
    transform: translateY(-10px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
}

.ip-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
    background: var(--bg-card);
}

.ip-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.ip-item:hover .ip-image img {
    transform: scale(1.1);
}

.ip-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 107, 157, 0.1) 100%);
    z-index: 1;
}

.ip-info {
    padding: 24px;
    text-align: center;
}

.ip-info h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.ip-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    padding: 80px 0 32px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 0 0 2px 2px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h3,
.footer-section h4 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    font-size: 1.5rem;
    font-weight: 800;
    text-transform: none;
    letter-spacing: 0;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-section ul li a:hover {
    color: var(--accent-pink);
    transform: translateX(8px);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.social-links a:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-hover);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.download-btn {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 14px 20px;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-soft);
}

.download-btn:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 2px solid var(--border-color);
    color: var(--text-secondary);
}

.footer-friendship {
    margin-top: 16px;
    font-size: 14px;
}

.footer-friendship a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 12px;
    transition: all 0.3s ease;
}

.footer-friendship a:hover {
    color: var(--accent-pink);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 85px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 85px);
        background: linear-gradient(135deg, #ffffff 0%, #fff5f8 100%);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 60px;
        transition: left 0.3s ease;
        border-top: 3px solid;
        border-image: var(--gradient-primary) 1;
        gap: 12px;
        z-index: 997;
        overflow-y: auto;
    }
    
    /* 如果页面有公告栏，调整菜单位置 */
    .announcement-bar ~ main .nav-menu,
    body:has(.announcement-bar) .nav-menu {
        top: 133px;
        height: calc(100vh - 133px);
    }
    
    .nav-menu::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: var(--gradient-primary);
        z-index: 1;
    }
    
    .nav-menu li {
        width: 90%;
        max-width: 300px;
    }
    
    .nav-menu a {
        width: 100%;
        text-align: center;
        display: block;
        padding: 16px 20px;
    }
    
    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .title-main {
        font-size: 3.5rem;
    }

    .title-sub {
        font-size: 1.3rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .title-main {
        font-size: 2.8rem;
    }

    .hero-description {
        font-size: 1.1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 36px 24px;
    }

    .faq-question {
        padding: 20px 24px;
        font-size: 1rem;
    }

    .faq-answer p {
        padding: 0 24px 20px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 焦点样式 */
button:focus,
a:focus {
    outline: 2px solid var(--accent-pink);
    outline-offset: 2px;
}

/* 加载动画 */
.loading {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* 快速链接美化 */
.quick-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.quick-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 157, 0.1), transparent);
    transition: left 0.5s;
}

.quick-link:hover::before {
    left: 100%;
}

.quick-link:hover {
    transform: translateY(-2px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.quick-link i {
    font-size: 18px;
    color: var(--accent-pink);
    width: 24px;
    text-align: center;
}

.support-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.support-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.support-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 157, 0.1), transparent);
    transition: left 0.5s;
}

.support-link:hover::before {
    left: 100%;
}

.support-link:hover {
    transform: translateY(-2px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.support-link i {
    font-size: 20px;
    color: var(--accent-pink);
    width: 28px;
    text-align: center;
}

.support-link span {
    font-size: 0.95rem;
    font-weight: 500;
}

/* ===== 子页面样式 ===== */

/* 页面标题区域 */
.page-header {
    background: var(--gradient-bg);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 85px;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(255, 107, 157, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    animation: pulse-glow 6s ease-in-out infinite;
}

.page-title {
    font-size: 4.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
    text-transform: none;
    letter-spacing: 0;
    filter: drop-shadow(0 4px 20px rgba(255, 107, 157, 0.3));
}

.page-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

/* FAQ页面样式 */
.faq-page {
    padding: 80px 0;
    background: var(--bg-primary);
}

.faq-categories {
    margin-bottom: 60px;
}

.category-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.category-tab {
    padding: 14px 32px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0;
    box-shadow: var(--shadow-soft);
}

.category-tab:hover {
    transform: translateY(-2px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
}

.category-tab.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-hover);
}

.faq-category {
    display: none;
    animation: fadeInUp 0.6s ease;
}

.faq-category.active {
    display: block;
}

.category-title {
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 48px;
    position: relative;
    text-transform: none;
    letter-spacing: 0;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 5px;
    background: var(--gradient-primary);
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(255, 107, 157, 0.3);
}

/* 联系支持区域 */
.contact-support {
    background: var(--gradient-bg);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact-support::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(255, 107, 157, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    animation: pulse-glow 6s ease-in-out infinite;
}

.support-card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 60px 48px;
    box-shadow: var(--shadow-hover);
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    border: 2px solid var(--border-color);
}

.support-card h3 {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
}

.support-card p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.support-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 联系我们页面样式 */
.contact-methods {
    padding: 80px 0;
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 32px;
    margin-bottom: 80px;
}

.contact-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 24px 24px 0 0;
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.contact-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.contact-card:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-hover);
}

.contact-icon i {
    font-size: 36px;
    color: white;
}

.contact-card h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 1rem;
}

.contact-info {
    text-align: left;
    margin-bottom: 28px;
}

.contact-info p {
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.contact-info strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* 联系表单样式 */
.contact-form {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.form-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 24px;
    padding: 60px 48px;
    box-shadow: var(--shadow-hover);
    border: 2px solid var(--border-color);
}

.form-container h2 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 16px;
    text-transform: none;
    letter-spacing: 0;
}

.form-container p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1.1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    margin-bottom: 28px;
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-pink);
    box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.1);
    background: white;
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
    border-radius: 20px;
}

/* 意见反馈页面样式 */
.feedback-types {
    padding: 80px 0;
    background: var(--bg-primary);
}

.feedback-types h2 {
    text-align: center;
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 60px;
    text-transform: none;
    letter-spacing: 0;
}

.type-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
    margin-bottom: 80px;
}

.type-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 36px 28px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.type-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 24px 24px 0 0;
}

.type-card:hover::before {
    transform: scaleX(1);
}

.type-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.type-card.active {
    border-color: var(--accent-pink);
    background: var(--bg-hover);
    box-shadow: var(--shadow-hover);
}

.type-card.active::before {
    transform: scaleX(1);
}

.type-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.type-card:hover .type-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-hover);
}

.type-icon i {
    font-size: 32px;
    color: white;
}

.type-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.type-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.feedback-form {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.feedback-status {
    padding: 80px 0;
    background: var(--bg-primary);
}

.status-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 24px;
    padding: 48px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-soft);
}

.status-container h2 {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 16px;
    text-transform: none;
}

.status-container p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.status-form {
    margin-bottom: 32px;
}

.status-input {
    display: flex;
    gap: 16px;
}

.status-input input {
    flex: 1;
    padding: 16px 20px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
}

.status-input input:focus {
    outline: none;
    border-color: var(--accent-pink);
    box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.1);
    background: white;
}

.status-result {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 32px;
    border: 2px solid var(--border-color);
}

.status-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.status-details p {
    text-align: left;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.status-details strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* 帮助中心页面样式 */
.help-navigation {
    padding: 48px 0;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
}

.help-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 0;
}

.help-tab {
    padding: 14px 32px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    text-transform: none;
    letter-spacing: 0;
    box-shadow: var(--shadow-soft);
}

.help-tab:hover {
    transform: translateY(-2px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
}

.help-tab.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-hover);
}

.help-content {
    display: none;
    padding: 80px 0;
    background: var(--bg-primary);
    animation: fadeInUp 0.6s ease;
}

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

.content-title {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    text-transform: none;
    letter-spacing: 0;
}

.content-title::after {
    content: '';
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 5px;
    background: var(--gradient-primary);
    border-radius: 3px;
    box-shadow: 0 2px 10px rgba(255, 107, 157, 0.3);
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.help-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.help-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 24px 24px 0 0;
}

.help-card:hover::before {
    transform: scaleX(1);
}

.help-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.help-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
    position: relative;
}

.help-icon::after {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.2;
    transition: all 0.3s ease;
}

.help-card:hover .help-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-hover);
}

.help-card:hover .help-icon::after {
    opacity: 0.4;
    transform: scale(1.2);
}

.help-icon i {
    font-size: 40px;
    color: white;
}

.help-card h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 28px;
    position: relative;
}

.help-card h3::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.help-steps {
    text-align: left;
}

.step {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: 50px;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.step:hover {
    background: var(--bg-hover);
    border-left-color: var(--accent-pink);
    transform: translateX(8px);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-soft);
}

.step p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 500;
}

.feature-guides {
    max-width: 1000px;
    margin: 0 auto;
}

.guide-item {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 48px 40px;
    margin-bottom: 32px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.guide-item:hover {
    transform: translateY(-6px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.guide-item h3 {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.guide-item h3 i {
    color: var(--accent-pink);
    font-size: 1.8rem;
    filter: drop-shadow(0 2px 8px rgba(255, 107, 157, 0.3));
}

.guide-content h4 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 28px 0 16px;
    padding-left: 20px;
    border-left: 4px solid var(--accent-pink);
}

.guide-content ul {
    padding-left: 28px;
    margin-bottom: 24px;
}

.guide-content li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
    padding-left: 12px;
    position: relative;
}

.guide-content li::before {
    content: '▶';
    color: var(--accent-pink);
    font-size: 0.8rem;
    position: absolute;
    left: -20px;
    top: 2px;
}

.troubleshooting-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 32px;
}

.trouble-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 32px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.trouble-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.trouble-card h3 {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.trouble-card h3 i {
    color: var(--accent-pink);
    font-size: 1.6rem;
    filter: drop-shadow(0 2px 8px rgba(255, 107, 157, 0.3));
}

.trouble-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.trouble-item {
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 20px;
    border-left: 4px solid var(--accent-pink);
}

.trouble-item h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.trouble-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.trouble-item strong {
    color: var(--accent-pink);
    font-weight: 600;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.tip-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.tip-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.tip-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.tip-card:hover .tip-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-hover);
}

.tip-icon i {
    font-size: 36px;
    color: white;
}

.tip-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.tip-card ul {
    text-align: left;
    padding-left: 24px;
}

.tip-card li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
    position: relative;
}

.tip-card li::before {
    content: '✨';
    position: absolute;
    left: -28px;
    top: 0;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.video-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 32px 28px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.video-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 24px 24px 0 0;
}

.video-card:hover::before {
    transform: scaleX(1);
}

.video-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-pink);
    box-shadow: var(--shadow-hover);
    background: var(--bg-hover);
}

.video-thumbnail {
    width: 100%;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.video-card:hover .video-thumbnail {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.video-thumbnail i {
    font-size: 4rem;
    color: white;
    opacity: 0.9;
}

.video-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.video-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.video-duration {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: var(--shadow-soft);
}

.quick-help {
    padding: 80px 0;
    background: var(--gradient-bg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.quick-help::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 40%, rgba(255, 107, 157, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(168, 85, 247, 0.1) 0%, transparent 50%);
    animation: pulse-glow 6s ease-in-out infinite;
}

.quick-help h2 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
    text-transform: none;
    letter-spacing: 0;
}

.quick-help p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 48px;
    position: relative;
    z-index: 1;
}

.help-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.help-link {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 36px 28px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-soft);
}

.help-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 24px 24px 0 0;
}

.help-link:hover::before {
    transform: scaleX(1);
}

.help-link:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-pink);
    background: var(--bg-hover);
}

.help-link i {
    font-size: 3rem;
    color: var(--accent-pink);
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 8px rgba(255, 107, 157, 0.3));
}

.help-link:hover i {
    transform: scale(1.2);
}

.help-link span {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .page-title {
        font-size: 3rem;
    }
    
    .page-subtitle {
        font-size: 1.2rem;
    }
    
    .category-tabs,
    .help-tabs {
        gap: 12px;
    }
    
    .category-tab,
    .help-tab {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .type-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
    
    .help-links {
        grid-template-columns: 1fr;
    }
    
    .support-card,
    .form-container {
        padding: 40px 24px;
    }
    
    .ip-categories {
        gap: 48px;
    }
    
    .ip-category {
        padding: 36px 28px;
    }
    
    .category-title {
        font-size: 2rem;
    }
    
    .ip-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 24px;
    }
    
    .ip-image {
        height: 180px;
    }

    .troubleshooting-grid {
        grid-template-columns: 1fr;
    }

    .tips-grid {
        grid-template-columns: 1fr;
    }

    .video-grid {
        grid-template-columns: 1fr;
    }
}