/* Basic styles to ensure smooth rendering */
body {
    font-family: 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, sans-serif;
    scroll-behavior: smooth;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

/* Prevent layout shift during load */
.preload * {
    transition: none !important;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Mobile Competition Popup Styles */
.mobile-competition-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: none;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
    touch-action: pan-y;
    user-select: none;
    overscroll-behavior: none;
    -webkit-overflow-scrolling: touch;
}

.mobile-competition-popup.active {
    display: flex;
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.popup-header {
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(99, 102, 241, 0.15) 100%);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    position: sticky;
    top: 0;
    z-index: 1001;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-radius: 0 0 20px 20px;
    margin: 0 -20px;
    padding-left: 60px;
    padding-right: 60px;
}

.popup-header-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.popup-header h3 {
    font-size: 16px;
    font-weight: 800;
    margin: 0;
    color: #1e293b;
    letter-spacing: -0.5px;
    font-family: 'Microsoft YaHei', sans-serif;
}

.popup-description {
    font-size: 12px;
    color: #64748b;
    margin: 0;
    font-family: 'Microsoft YaHei', sans-serif;
}

.popup-close-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(241, 245, 249, 0.95));
    border: 2px solid rgba(226, 232, 240, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: #475569;
    font-size: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
    position: relative;
    overflow: hidden;
}

.popup-close-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(99, 102, 241, 0.3));
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.popup-close-btn:hover::before {
    width: 150px;
    height: 150px;
}

.popup-close-btn:hover {
    background: linear-gradient(135deg, rgba(239, 246, 255, 0.95), rgba(226, 232, 240, 0.95));
    border-color: rgba(59, 130, 246, 0.4);
    color: #3b82f6;
    transform: scale(1.05) rotate(90deg);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.18);
}

.popup-close-btn i {
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.popup-content {
    padding: 20px 20px 80px 20px;
    flex: 1;
}

/* Global Animation Background */
#global-bg {
    background: linear-gradient(180deg, #ffffff 0%, #eef2ff 50%, #f3e8ff 100%);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

#global-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    opacity: 0.3;
}

/* Animated Blobs */
#global-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iNjAiIGhlaWdodD0iNjAiIHZpZXdCb3g9IjAgMCA2MCA2MCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48ZyBmaWxsPSJub25lIiBmaWxsLXJ1bGU9ImV2ZW5vZGQiPjxnIGZpbGw9IiMwMDAiIGZpbGwtb3BhY2l0eT0iMC4wMyI+PHBhdGggZD0iTTAgMGg2MHY2MEgweiIvPjxwYXRoIGQ9Ik02MCAwaC0xMHY2MGgxMHYtNjB6Ii8+PHBhdGggZD0iTTQwIDBoLTJ2NjBoMnYtNjB6Ii8+PHBhdGggZD0iTTIwIDBoLTJ2NjBoMnYtNjB6Ii8+PHBhdGggZD0iTTEwIDBoLTJ2NjBoMnYtNjB6Ii8+PHBhdGggZD0iTTMwIDBoLTJ2NjBoMnYtNjB6Ii8+PHBhdGggZD0iTTUwIDBoLTJ2NjBoMnYtNjB6Ii8+PC9nPjwvZz48L3N2Zz4=');
    opacity: 0.2;
    z-index: -1;
}

/* Navbar Styles */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 50;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.45);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

#navbar .container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100px;
    transition: height 0.3s ease;
}

/* Mobile Responsive Navbar */
@media (max-width: 768px) {
    #navbar .container {
        height: 70px;
    }
    
    #navbar .logo-text {
        font-size: 18px;
        width: 280px;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    #navbar .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 12px;
    }
}

#navbar .logo {
    display: flex;
    align-items: center;
    gap: 18px;
    text-decoration: none;
    width: 500px;
}

#navbar .logo-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    object-fit: cover;
    background: transparent;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

#navbar .logo-text {
    font-size: 18px;
    font-weight: 900;
    color: #1e293b;
    letter-spacing: -0.5px;
}

/* Desktop Menu */
#navbar .desktop-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

#navbar .desktop-menu a {
    text-decoration: none;
    color: #475569;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

#navbar .desktop-menu a:hover {
    color: #3b82f6;
}

#navbar .desktop-menu a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    transition: width 0.3s ease;
}

#navbar .desktop-menu a:hover::after {
    width: 100%;
}

#navbar .btn-primary {
    padding: 12px 24px;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: white !important;
    border: none;
    border-radius: 25px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

#navbar .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* Mobile Menu Button */
#navbar .mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: #475569;
    font-size: 18px;
    transition: all 0.3s ease;
    padding: 20px;
}

#navbar .mobile-menu-btn:hover {
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Mobile Menu */
#mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    flex-direction: column;
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#mobile-menu.active {
    display: flex;
}

#mobile-menu .mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

#mobile-menu .mobile-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

#mobile-menu .mobile-logo-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    object-fit: cover;
    background: transparent;
}

#mobile-menu .mobile-logo-text {
    font-size: 18px;
    font-weight: 900;
    color: #1e293b;
    width: 280px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

#mobile-menu .mobile-close-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(241, 245, 249, 0.8);
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: #475569;
    font-size: 18px;
    transition: all 0.3s ease;
}

#mobile-menu .mobile-close-btn:hover {
    background: rgba(226, 232, 240, 0.8);
}

#mobile-menu .mobile-menu-items {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 44px;
    padding: 80px 20px;
}

#mobile-menu .mobile-menu-items a {
    text-decoration: none;
    color: #475569;
    font-weight: 700;
    font-size: 20px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
}

#mobile-menu .mobile-menu-items a:hover {
    color: #3b82f6;
    transform: translateY(-2px);
}

#mobile-menu .btn-primary {
    padding: 14px 32px;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: white !important;
    border: none;
    border-radius: 25px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

#mobile-menu .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* Hero Section Styles */
#hero {
    position: relative;
    overflow: hidden;
}

#hero .container {
    max-width: 1300px;
    margin: 0 auto;

}

#hero .hero-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    margin-top: 10%;
    min-height: 700px;
    align-items: center;
}

#hero .hero-text {
    position: relative;
    z-index: 2;
}

#hero .badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(226, 232, 240, 0.8);
    border: 1px solid rgba(203, 213, 225, 0.8);
    border-radius: 20px;
    font-size: 15px;
    font-weight: 700;
    color: #3b82f6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

/* Mobile Responsive for Hero Badge */
@media (max-width: 768px) {
    #hero .badge {
        font-size: 10px;
        padding: 6px 12px;
    }
}

#hero .hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.6;
    color: #1e293b;
    margin-bottom: 24px;
}

#hero .hero-title span {
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#hero .hero-description {
    font-size: 18px;
    line-height: 1.6;
    color: #475569;
    margin-bottom: 32px;
    max-width: 450px;
}

#hero .hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.btn-primary {
    padding: 14px 32px;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

#hero .btn-secondary {
    padding: 14px 32px;
    background: white;
    color: #3b82f6;
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 25px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

#hero .btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

#hero .btn-secondary i {
    color: #3b82f6;
}

#hero .hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

#hero .expert-avatars {
    display: flex;
    gap: -8px;
}

#hero .expert-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #e0f2fe;
    border: 2px solid white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-left: -8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 16px;
}

#hero .expert-avatars .expert-avatar:first-child {
    margin-left: 0;
}

#hero .stats-text {
    font-size: 14px;
    color: #64748b;
}

#hero .stats-text span {
    font-weight: 900;
    color: #1e293b;
}

#hero .hero-visual {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 550px;
    margin-left: auto;
}

#hero .glass-card {
    position: relative;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.5);
    z-index: 2;
}

#hero .glass-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 24px;
    opacity: 0.1;
    z-index: -1;
    animation: pulse 2s ease-in-out infinite;
}

#hero .stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#hero .stat-item:last-child {
    margin-bottom: 0;
}

#hero .stat-text {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 4px;
    text-align: left;
}

#hero .stat-number {
    font-size: 24px;
    font-weight: 900;
    color: #3b82f6;
}

#hero .stat-item:nth-child(2) .stat-number {
    color: #6366f1;
}

#hero .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    font-size: 20px;
}

#hero .stat-item:nth-child(2) .stat-icon {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
}

#hero .progress-bar {
    width: 100%;
    height: 10px;
    background: rgba(226, 232, 240, 0.8);
    border-radius: 5px;
    margin: 20px 0;
    overflow: hidden;
}

#hero .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 5px;
    width: 78%;
}

#hero .deadline {
    font-size: 12px;
    color: #64748b;
    text-align: center;
}

/* Floating Badges */
#hero .floating-badge {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 3s ease-in-out infinite;
    z-index: 9999;
    flex: 1;
    min-width: 200px;
}

#hero .floating-badge:first-of-type {
    animation-delay: 0s;
}

#hero .floating-badge:nth-of-type(2) {
    animation-delay: 0.5s;
}

#hero .floating-badge:last-of-type {
    animation-delay: 1s;
    z-index: 9999; /* 层级置顶 */
}

#hero .floating-badge-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(251, 191, 36, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f59e0b;
    font-size: 20px;
}

#hero .floating-badge:nth-of-type(2) .floating-badge-icon {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

#hero .floating-badge:last-of-type .floating-badge-icon {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
}

#hero .floating-badge-text {
    font-size: 12px;
    color: #64748b;
    margin-bottom: 2px;
}

#hero .floating-badge-title {
    font-size: 14px;
    font-weight: 700;
    color: #1e293b;
}

/* 浮动卡片容器 */
#hero .floating-badges-container {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 16px;
}

/* About Section Styles */
#about {
    position: relative;
    z-index: 2;
    margin-top: 50px;
}

/* Highlights Section Styles */
#highlights {
    position: relative;
    z-index: 2;
    margin-top: 150px;
}

/* Timeline Section Styles */
#timeline {
    position: relative;
    z-index: 2;
    margin-top: 150px;
}

/* Requirements Section Styles */
#requirements {
    position: relative;
    z-index: 2;
    margin-top: 150px;
}

/* FAQ Section Styles */
#faq {
    position: relative;
    z-index: 2;
    margin-top: 50px;
}

/* Footer Styles */
footer {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    margin-top: 150px;
}

/* Mobile Responsive Module Spacing */
@media (max-width: 768px) {
    #about,
    #highlights,
    #timeline,
    #requirements,
    #success-stories,
    #faq,
    footer {
        margin-top: 80px;
    }
}

#about .container {
    max-width: 1300px;
    margin: 0 auto;
}

#about .section-header {
    text-align: center;
    margin-bottom: 60px;
}

#about .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(220, 252, 231, 0.5);
    border: 1px solid rgba(187, 247, 208, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #10b981;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#about .section-title {
    font-size: 48px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

#about .section-divider {
    width: 96px;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

#about .about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

#about .about-text {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

#about .about-description {
    font-size: 18px;
    line-height: 1.8;
    color: #475569;
    text-indent: 2em;
    text-align: left;
}

#about .certification-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border-radius: 20px;
    font-weight: 700;
    font-size: 12px;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    width: 300px;
    text-align: center; /* 文字左右居中 */
    margin: 0 auto; /* 模块水平居中 */
    display: flex; /* 改为flex以确保margin:auto生效 */
}

/* Mobile responsive styles for certification badge */
@media (max-width: 768px) {
    #about .certification-badge {
        width: auto; /* 在移动端使用自适应宽度 */
        max-width: 90%; /* 限制最大宽度 */
        margin: 0 auto; /* 确保在移动端也居中 */
    }
}

#about .certification-badge .badge-icon {
    font-size: 16px;
}

#about .discipline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

#about .discipline-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    font-size: 13px;
    color: #3b82f6;
    font-weight: 700;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

#about .discipline-tag:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.5);
    transform: translateY(-2px);
}

#about .discipline-tag i {
    font-size: 14px;
}

/* Mobile responsive styles for discipline tags */
@media (max-width: 768px) {
    #about .discipline-tags {
        flex-wrap: nowrap;
        justify-content: center;
    }
    
    #about .discipline-tag {
        flex-shrink: 1;
        font-size: 11px;
        padding: 4px 10px;
        max-width: 33.33%;
        box-sizing: border-box;
    }
    
    #about .discipline-tag i {
        font-size: 12px;
    }
}

#about .btn-outline {
    padding: 12px 24px;
    background: #eff6ff;
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.5);
    border-radius: 25px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
}

#about .btn-outline:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: #3b82f6;
}

#about .stats-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

#about .stat-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

#about .stat-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
}

#about .stat-card .stat-number {
    font-size: 38px;
    font-weight: 900;
    margin-bottom: 8px;
}

#about .stat-card:nth-child(1) .stat-number {
    color: #3b82f6;
}

#about .stat-card:nth-child(2) .stat-number {
    color: #6366f1;
}

#about .stat-card:nth-child(3) .stat-number {
    color: #a855f7;
}

#about .stat-card:nth-child(4) .stat-number {
    color: #10b981;
}

/* Video Section Header Styles */
.video-section-header {
    text-align: center;
    width: 100%;
}

.video-section-title {
    font-size: 36px;
    font-weight: 900;

    margin-bottom: 15px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;

}
.video-section-divider::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 4px;
    background: #f1f5f9;
    border-radius: 2px;
}

/* Mobile responsive styles for video section header */
@media (max-width: 768px) {
    .video-section-title {
        font-size: 28px;
        margin-bottom: 12px;
    }
    
    .video-section-divider {
        width: 50px;
        height: 3px;
    }
    
    .video-section-divider::after {
        width: 15px;
        height: 3px;
    }
}

/* Video Container Styles */
.video-container {
    position: relative;
    width: auto;
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: #000;
}

.hero-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    max-width: 600px;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    opacity: 1;
    transition: all 0.3s ease;
    border-radius: 20px;
}

.video-overlay:hover {
    background: rgba(0, 0, 0, 0.5);
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.play-button:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 1);
}

.play-button i {
    font-size: 30px;
    color: #3b82f6;
    margin-left: 4px;
}

.video-title {
    color: white;
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

/* Mobile responsive styles for video */
@media (max-width: 768px) {
    .video-container {
        max-width: 100%;
        border-radius: 15px;
    }
    
    .play-button {
        width: 60px;
        height: 60px;
    }
    
    .play-button i {
        font-size: 24px;
    }
    
    .video-title {
        font-size: 16px;
    }
}

/* Success Stories Section Styles */
#success-stories {
    position: relative;
    z-index: 2;
    margin-top: 100px;
}

#success-stories .container {
    max-width: 1300px;
    margin: 0 auto;
}

#success-stories .section-header {
    text-align: center;
    margin-bottom: 60px;
}

#success-stories .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(243, 244, 265, 0.5);
    border: 1px solid rgba(236, 229, 255, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #8b5cf6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#success-stories .section-title {
    font-size: 48px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

#success-stories .section-divider {
    width: 96px;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

#success-stories .story-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

#success-stories .story-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    transform: translateY(-8px) scale(1.02);
}

#success-stories .story-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

#success-stories .story-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 28px;
    font-weight: 900;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

#success-stories .avatar-initial {
    color: white;
    font-size: 24px;
    font-weight: 900;
}

#success-stories .story-info {
    flex: 1;
}

#success-stories .story-name {
    font-size: 20px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 4px;
}

#success-stories .story-school {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 8px;
}

#success-stories .story-award {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    color: #3b82f6;
    font-size: 12px;
    font-weight: 700;
}

#success-stories .story-award i {
    font-size: 14px;
}

#success-stories .story-content {
    position: relative;
}

#success-stories .story-project {
    margin-bottom: 20px;
}

#success-stories .project-title {
    font-size: 16px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

#success-stories .project-title i {
    color: #3b82f6;
    font-size: 18px;
}

#success-stories .project-description {
    font-size: 14px;
    line-height: 1.6;
    color: #475569;
    height: 8em; /* 固定5行高度 (1.6 * 5 = 8em) */
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
}

#success-stories .story-impact {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid rgba(226, 232, 240, 0.8);
}

#success-stories .impact-item {
    text-align: center;
    padding: 12px;
    background: rgba(241, 245, 249, 0.8);
    border-radius: 12px;
}

#success-stories .impact-value {
    display: block;
    font-size: 14px;
    font-weight: 900;
    color: #3b82f6;
    margin-bottom: 4px;
}

#success-stories .impact-label {
    display: block;
    font-size: 12px;
    color: #64748b;
    font-weight: 500;
}

/* Mobile Responsive Styles for Success Stories */
@media (max-width: 768px) {
    #success-stories {
        padding-top: 16px;
        padding-bottom: 16px;
    }
    
    #success-stories .story-card {
        padding: 20px;
    }
    
    #success-stories .story-header {
        margin-bottom: 16px;
        gap: 12px;
    }
    
    #success-stories .story-avatar {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }
    
    #success-stories .avatar-initial {
        font-size: 20px;
    }
    
    #success-stories .story-name {
        font-size: 18px;
    }
    
    #success-stories .story-project {
        margin-bottom: 16px;
    }
    
    #success-stories .project-title {
        font-size: 15px;
        margin-bottom: 10px;
    }
    
    #success-stories .project-description {
    font-size: 13px;
    line-height: 1.5;
    height: 7.5em; /* 固定5行高度 (1.5 * 5 = 7.5em) */
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
}
    
    #success-stories .story-impact {
        padding-top: 12px;
        gap: 10px;
    }
    
    #success-stories .impact-item {
        padding: 10px;
    }
}

#about .stat-card .stat-label {
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
}

/* Highlights Section Styles */
#highlights {
    position: relative;
    z-index: 2;
}

#highlights .container {
    max-width: 1300px;
    margin: 0 auto;
}

#highlights .section-header {
    text-align: center;
    margin-bottom: 60px;
}

#highlights .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(243, 244, 265, 0.5);
    border: 1px solid rgba(236, 229, 255, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #8b5cf6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#highlights .section-title {
    font-size: 48px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

#highlights .section-divider {
    width: 96px;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

#highlights .highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

#highlights .highlight-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: default;
}

#highlights .highlight-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    transform: translateY(-8px) scale(1.02);
}

#highlights .highlight-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    font-size: 28px;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

#highlights .highlight-card:nth-child(2) .highlight-icon {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
}

#highlights .highlight-card:nth-child(3) .highlight-icon {
    background: rgba(168, 85, 247, 0.1);
    color: #a855f7;
}

#highlights .highlight-card:nth-child(4) .highlight-icon {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
}

#highlights .highlight-card:hover .highlight-icon {
    transform: scale(1.1);
}

#highlights .highlight-title {
    font-size: 20px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 12px;
}

#highlights .highlight-description {
    font-size: 14px;
    line-height: 1.6;
    color: #64748b;
}

/* Timeline Section Styles */
#timeline {
    position: relative;
    z-index: 2;
}

#timeline .container {
    max-width: 1300px;
    margin: 0 auto;
}

#timeline .section-header {
    text-align: center;
    margin-bottom: 60px;
}

#timeline .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(226, 232, 240, 0.5);
    border: 1px solid rgba(203, 213, 225, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #3b82f6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#timeline .section-title {
    font-size: 48px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

#timeline .section-divider {
    width: 96px;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* Timeline Section Styles */
#timeline .timeline-container {
    position: relative;
    margin-top: 50px;
    width: 100%;
}

/* Custom margins for timeline section */
#timeline .section-header.timeline-section-header {
    margin-bottom: 0px !important; /* 增加底部边距，使标题与时间轴内容距离更远 */
}

#timeline .timeline-container.custom-timeline-container {
    margin-top: 80px !important; /* 可以根据需要调整时间轴容器的顶部边距 */
}

#timeline .timeline-wrapper {
    position: relative;
    width: 100%;
}

#timeline .timeline {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 20px;
    position: relative;
}

/* Timeline Connector Line */
#timeline .timeline::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
    z-index: 1;
}

/* Timeline Item */
#timeline .timeline-item {
    position: relative;
    flex: 1;
    z-index: 2;
}

/* Timeline Item Dot on Line */
#timeline .timeline-item::before {
    content: '';
    position: absolute;
    top: -48px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.6);
    z-index: 3;
}

#timeline .timeline-content {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#timeline .timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

/* Timeline Item Badge */
#timeline .timeline-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    z-index: 3;
    width: auto;
}

/* Timeline Item Date */
#timeline .timeline-date {
    font-size: 18px;
    font-weight: 700;
    color: #1e293b;
    margin: 20px 0 12px;
    line-height: 1.3;
}

/* Timeline Item Description */
#timeline .timeline-description {
    font-size: 14px;
    line-height: 1.7;
    color: #64748b;
    padding-top: 16px;
    border-top: 1px solid rgba(226, 232, 240, 0.5);
}

/* Mobile Responsive Timeline */
@media (max-width: 1024px) {
    #timeline .timeline {
        flex-direction: column;
        gap: 30px;
        left: -20px;
    }
    
    #timeline .timeline::before {
        width: 3px;
        height: 100%;
        top: 0;
        left: 35px;
    }
    
    #timeline .timeline-item {
        margin-left: 60px;
    }
    
    #timeline .timeline-badge {
        top: 10px;
        left: 10px;
        transform: none;
    }
    
    #timeline .timeline-content {
        text-align: left;
        align-items: flex-start;
    }
    
    /* Mobile Timeline Item Dot */
    #timeline .timeline-item::before {
        top: 10px;
        left: -36px;
        transform: none;
        width: 20px;
        height: 20px;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {

    /* Navbar */
    #navbar .desktop-menu {
        display: none;
    }

    #navbar .mobile-menu-btn {
        display: flex;
    }

    /* Hero Section */
    #hero {
        padding: 40px 20px;
    }
    
    #hero .hero-content {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
        min-height: auto;
    }

    #hero .hero-description {
        max-width: 100%;
    }

    #hero .hero-buttons {
        justify-content: center;
    }

    #hero .hero-stats {
        justify-content: center;
    }
    
    /* Floating Badges Container */
    #hero .floating-badges-container {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    #hero .floating-badge {
        min-width: 240px;
    }
    
    /* Hero Title Adjustment */
    #hero .hero-title {
        font-size: 50px;
        line-height: 1.5;
    }
    
    /* Center Hero Visual on Medium Screens */
    #hero .hero-visual {
        max-width: 100%;
        margin-left: 0;
        margin-right: 0;
    }

    /* About Section */
    #about .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    #about .about-text {
        text-align: center;
    }

    #about .btn-outline {
        margin: 0 auto;
    }

    /* Highlights Section */
    #highlights .highlights-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    /* Timeline Section */
    #timeline .timeline-line {
        display: none;
    }
    
    #timeline .timeline-progress {
        display: none;
    }
    
    #timeline .timeline-items {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

@media (max-width: 768px) {

    /* Hero Section */
    #hero .hero-content {
        grid-template-columns: 1fr;
        min-height: auto;
        padding: 40px 0;
        gap: 40px;
    }
    
    #hero .hero-visual {
        max-width: 100%;
        margin-left: 0;
    }
    
    /* Hide Floating Badges Container on Mobile */
    #hero .floating-badges-container {
        display: none;
    }
    
    #hero .hero-title {
        font-size: 40px;
    }

    /* Section Headers */
    #about .section-title,
    #highlights .section-title,
    #timeline .section-title,
    #requirements .section-title,
    #faq .section-title {
        font-size: 28px;
    }

    /* Specific section titles for requirements, faq, and success-stories */
    #requirements .section-title {
        font-size: 28px !important;
    }
    
    #faq .section-title {
        font-size: 28px !important;
    }
    
    #success-stories .section-title {
        font-size: 28px !important;
    }

    /* About Section - Fix overflow issues */
    #about .container {
        max-width: 100%;
        padding: 0 16px;
        box-sizing: border-box;
    }
    
    #about .about-content {
        grid-template-columns: 1fr;
        gap: 32px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    #about .about-text {
        text-align: center;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    #about .about-description {
        font-size: 16px;
        line-height: 1.6;
        text-indent: 0;
        text-align: justify;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    #about .stats-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    #about .stat-card {
        padding: 16px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
    
    #about .stat-card .stat-number {
        font-size: 32px;
    }

    /* Highlights Section */
    #highlights .highlights-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

@media (max-width: 480px) {

    /* Hero Section */
    #hero .hero-title {
        font-size: 32px;
    }

    #hero .hero-buttons {
        flex-direction: row;
        gap: 12px;
    }

    #hero .btn-primary,
    #hero .btn-secondary {
        width: auto;
        flex: 1;
        padding: 12px 16px;
        font-size: 14px;
    }

    /* About Section - Additional fixes for very small screens */

    
    #about .about-content {
        gap: 24px;
    }
    
    #about .about-description {
        font-size: 18px;
        line-height: 1.5;
        text-indent: 2em;
    }
    
    #about .stats-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    #about .stat-card {
        padding: 12px;
    }
    
    #about .stat-card .stat-number {
        font-size: 18px;
    }

    /* Section Headers */
    #about .section-title,
    #highlights .section-title,
    #timeline .section-title,
    #requirements .section-title,
    #faq .section-title {
        font-size: 28px;
    }
}

/* Requirements Section Styles */
#requirements {
    position: relative;
    z-index: 2;
}

#requirements .container {
    max-width: 1300px;
    margin: 0 auto;
}

#requirements .section-header {
    text-align: center;
    margin-bottom: 60px;
}

#requirements .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(226, 232, 240, 0.5);
    border: 1px solid rgba(203, 213, 225, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #3b82f6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#requirements .section-title {
    font-size: 48px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

#requirements .section-divider {
    width: 96px;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

#requirements .requirements-content {
    margin-top: 40px;
}

#requirements .requirements-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 40px;
}

#requirements .requirement-stat {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#requirements .requirement-stat:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

#requirements .stat-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

#requirements .requirement-stat:nth-child(2) .stat-icon {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
}

#requirements .requirement-stat:nth-child(3) .stat-icon {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
}

#requirements .requirement-stat:nth-child(4) .stat-icon {
    background: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
}

#requirements .requirement-stat:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

#requirements .stat-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

#requirements .stat-title {
    font-size: 14px;
    font-weight: 600;
    color: #64748b;
    margin: 0;
}

#requirements .stat-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

#requirements .stat-content p {
    font-size: 16px;
    font-weight: 500;
    color: #1e293b;
    margin: 0;
    line-height: 1.4;
}

#requirements .requirements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

#requirements .requirement-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

#requirements .requirement-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    transform: translateY(-8px) scale(1.02);
}

#requirements .requirement-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    font-size: 28px;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

#requirements .requirement-card:nth-child(2) .requirement-icon {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
}

#requirements .requirement-card:nth-child(3) .requirement-icon {
    background: rgba(168, 85, 247, 0.1);
    color: #a855f7;
}

#requirements .requirement-card:hover .requirement-icon {
    transform: scale(1.1);
}

#requirements .requirement-title {
    font-size: 20px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 16px;
    text-align: center;
}

#requirements .requirement-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

#requirements .requirement-list li {
    font-size: 14px;
    line-height: 1.6;
    color: #64748b;
    margin-bottom: 8px;
    padding-left: 24px;
    position: relative;
}

#requirements .requirement-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3b82f6;
    font-weight: 700;
    font-size: 16px;
}

/* FAQ Section Styles */
#faq {
    position: relative;
    z-index: 2;
}

#faq .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 0 0 45px;
}

/* 移动端响应式样式 - FAQ容器居中显示 */
@media (max-width: 1024px) {
    #faq .container {
        padding: 0 16px;
        width: 100%;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    #faq .container {
        padding: 0 16px;
    }
}

#faq .section-header {
    text-align: center;
    margin-bottom: 60px;
}

#faq .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(226, 232, 240, 0.5);
    border: 1px solid rgba(203, 213, 225, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #3b82f6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#faq .section-title {
    font-size: 48px;
    font-weight: 900;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

#faq .section-divider {
    width: 96px;
    height: 6px;
    background: linear-gradient(90deg, #3b82f6 0%, #6366f1 100%);
    border-radius: 3px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

#faq .faq-content {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

#faq .faq-item {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
}

#faq .faq-item:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

#faq .faq-item.active {
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2), 0 8px 24px rgba(0, 0, 0, 0.12);
}

#faq .faq-question {
    display: flex;
    align-items: center;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

#faq .faq-question:hover {
    background: rgba(255, 255, 255, 0.5);
}

#faq .faq-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
    margin-right: 16px;
    flex-shrink: 0;
}

#faq .faq-question h3 {
    flex-grow: 1;
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

#faq .faq-toggle {
    background: none;
    border: none;
    color: #64748b;
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

#faq .faq-toggle:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

#faq .faq-item.active .faq-toggle {
    transform: rotate(180deg);
    color: #3b82f6;
}

#faq .faq-answer {
    max-height: 0;
    opacity: 0;
    padding: 0 24px;
    border-top: 1px solid rgba(226, 232, 240, 0.5);
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
    display: flex;
    align-items: center;
}

#faq .faq-item.active .faq-answer {
    max-height: 500px;
    opacity: 1;
    padding: 24px;
}

#faq .faq-answer .faq-number {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

#faq .faq-answer p {
    flex-grow: 1;
    font-size: 14px;
    padding: 4px;
    line-height: 1.6;
    color: #64748b;
}

#faq .faq-contact {
    text-align: center;
    margin-top: 60px;
    padding: 48px 32px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

#faq .faq-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.12);
    border-color: rgba(59, 130, 246, 0.3);
}

#faq .faq-contact h3 {
    font-size: 28px;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

#faq .faq-contact p {
    font-size: 16px;
    line-height: 1.6;
    color: #64748b;
    margin-bottom: 28px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer Styles */
footer {
    position: relative;
    z-index: 2;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
}

footer .container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 40px 0 40px;
}

footer .footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding: 60px 0 60px 0;
}

footer .footer-certification {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 20px;
}

footer .footer-certification .certification-badge {
    padding: 6px 12px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

footer .footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

footer .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

footer .logo-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    object-fit: cover;
    background: transparent;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

footer .logo-text {
    font-size: 24px;
    font-weight: 900;
    color: #1e293b;
}

footer .footer-description {
    font-size: 14px;
    line-height: 1.6;
    color: #64748b;
    padding-top: 24px;
    max-width: 400px;
}

footer .footer-social {
    display: flex;
    gap: 12px;
    padding-top: 24px;
}

footer .social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: 12px;
    color: #64748b;
    font-size: 18px;
    transition: all 0.3s ease;
    text-decoration: none;
}

footer .social-link:hover {
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    transform: translateY(-4px);
}

footer .footer-links,
footer .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

footer .footer-title {
    font-size: 18px;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

footer .footer-link-list,
footer .footer-contact-list {
    list-style: none;
    padding-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

footer .footer-link-list a {
    color: #64748b;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    padding: 4px 0;
    position: relative;
}

footer .footer-link-list a:hover {
    color: #3b82f6;
    padding-left: 8px;
}

footer .footer-link-list a::before {
    content: '→';
    position: absolute;
    left: -16px;
    color: #3b82f6;
    opacity: 0;
    transition: all 0.3s ease;
}

footer .footer-link-list a:hover::before {
    opacity: 1;
    left: -8px;
}

footer .footer-contact-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #64748b;
    font-size: 14px;
}

footer .footer-contact-list i {
    color: #3b82f6;
    font-size: 18px;
    flex-shrink: 0;
}

footer .footer-bottom {
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    padding: 40px 0 120px 45px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #64748b;
    font-size: 14px;
}

/* 移动端响应式样式 - 页脚底部居中显示 */
@media (max-width: 768px) {
    footer .footer-bottom {
        padding: 40px 16px 120px 16px;
    }
    
    footer .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 12px;
        font-size: 10px;
    }
    
    footer .footer-legal {
        justify-content: center;
        gap: 16px;
    }
}

footer .footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

footer .footer-legal {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

footer .footer-legal a {
    color: #64748b;
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer .footer-legal a:hover {
    color: #3b82f6;
}

footer .footer-copyright {
    font-size: 13px;
    color: #64748b;
    margin: 0;
}

/* Responsive Styles for Requirements Stats */
@media (max-width: 1024px) {
    #requirements .requirements-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    #requirements .requirements-stats {
        grid-template-columns: 1fr;
    }
}

/* Override Styles to Ensure Proper Display */
#requirements,
#faq,
footer {
    display: block;
    position: relative;
    z-index: 2;
    visibility: visible;
    opacity: 1;
    transform: none;
}

footer .footer-content {
    display: grid;
    visibility: visible;
    opacity: 1;
    transform: none;
    padding: 60px 0 60px 45px;
}

#requirements .requirement-card,
#faq .faq-item,
footer .footer-brand,
footer .footer-links,
footer .footer-contact {
    display: block;
    visibility: visible;
    opacity: 1;
    transform: none;
}

/* Responsive Design for New Sections */
@media (max-width: 1024px) {

    /* Requirements Section */
    #requirements .requirements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    /* Footer */
    footer .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
}

/* Footer in 768-1024px width - display in one line */
@media (min-width: 768px) and (max-width: 1024px) {
    footer .footer-content {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
        gap: 20px;
        flex-wrap: nowrap;
    }
    
    footer .footer-brand,
    footer .footer-links,
    footer .footer-contact {
        flex: 1;
        min-width: 0;
    }
    
    /* Center align text in footer links */
    footer .footer-links {
        text-align: center;
    }
    
    footer .footer-links .footer-title,
    footer .footer-links .footer-link-list,
    footer .footer-links .footer-link-list li {
        text-align: center;
        display: block;
        padding: 10px;
    }
}

@media (max-width: 768px) {

    /* Requirements Section */
    #requirements .requirements-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* FAQ Section */
    #faq .faq-question {
        padding: 20px;
    }

    #faq .faq-question h3 {
        font-size: 16px;
    }



    /* Footer */
    footer .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px 0;
    }

    footer .footer-brand {
        text-align: left;
        align-items: flex-start;
    }

    footer .footer-links,
    footer .footer-contact {
        text-align: left;
    }

    footer .footer-link-list a:hover {
        padding-left: 0;
    }

    footer .footer-link-list a::before {
        display: none;
    }
}

/* Mobile Bottom Floating Menu */
.mobile-bottom-menu {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(255, 255, 255, 0.99);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 10px 20px;
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    display: none;
}

/* Show mobile bottom menu on mobile and tablet devices */
@media (max-width: 1024px) {
    .mobile-bottom-menu {
        display: flex;
    }
    
    /* Add bottom padding to main content to avoid being hidden by mobile menu */
    body {
        padding-bottom: 0px;
    }
}

.mobile-bottom-menu .menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #475569;
    font-weight: 700;
    font-size: 14px;
    gap: 8px;
    flex: 1;
    max-width: 100px;
    padding: 10px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.mobile-bottom-menu .menu-item:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.mobile-bottom-menu .menu-item i {
    font-size: 24px;
    color: #3b82f6;
}

.mobile-bottom-menu .menu-item span {
    text-align: center;
    line-height: 1.2;
}

/* 移除移动端按钮的默认焦点轮廓和样式，使其与链接样式完全一致 */
.mobile-bottom-menu button.menu-item {
    /* 完全重置按钮默认样式 */
    all: unset;
    
    /* 完全复制基础.menu-item的所有样式 */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: #475569;
    font-weight: 700;
    font-size: 14px;
    gap: 8px;
    flex: 1;
    max-width: 100px;
    padding: 10px;
    border-radius: 12px;
    transition: all 0.3s ease;
    
    /* 按钮特定属性 */
    cursor: pointer;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    box-sizing: border-box;
}

/* 确保在所有状态下都移除轮廓 */
.mobile-bottom-menu button.menu-item:focus,
.mobile-bottom-menu button.menu-item:active,
.mobile-bottom-menu button.menu-item:focus-within {
    outline: none !important;
    box-shadow: none !important;
    -webkit-tap-highlight-color: transparent;
}

/* 确保按钮hover效果与链接一致 */
.mobile-bottom-menu button.menu-item:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

/* 修复客服按钮可能被全局样式隐藏的问题 */
.mobile-bottom-menu .menu-item.customer-service {
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    background-color: transparent !important;
    color: #475569 !important;
}

.mobile-bottom-menu .menu-item.customer-service:hover {
    background: rgba(59, 130, 246, 0.1) !important;
    color: #3b82f6 !important;
}

/* 确保按钮hover状态下图标和文字颜色也变化 */
.mobile-bottom-menu button.menu-item:hover i,
.mobile-bottom-menu button.menu-item:hover span {
    color: #3b82f6;
}

/* 确保按钮内的图标和文字样式与链接完全一致 */
.mobile-bottom-menu button.menu-item i {
    font-size: 24px;
    color: #3b82f6;
}

.mobile-bottom-menu button.menu-item span {
    text-align: center;
    line-height: 1.2;
    font-weight: 700;
    font-size: 14px;
    color: #475569;
}

/* Floating Buttons */
.floating-buttons {
    position: fixed;
    bottom: 120px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1002;
}

/* 当窗口宽度足够大时，将按钮定位在右侧边栏的右侧 */
@media (min-width: 1440px) {
    .floating-buttons {
        right: calc((100% - 1400px) / 2 - 200px);
    }
}

/* Fix mobile floating buttons position and visibility */
@media (max-width: 1024px) {
    .floating-buttons {
        bottom: 100px !important;
        right: 20px !important;
        z-index: 9999 !important;
        display: flex !important;
    }
    
    /* Ensure the button itself has correct dimensions and style on mobile */
    .floating-btn.back-to-top {
        width: 44px !important;
        height: 44px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        background-color: #3b82f6 !important; /* Ensure visible background */
        color: #ffffff !important;
        /* 强制显示以解决不可见问题，如果需要滚动显示效果可后续调整 */
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
    }
    
    .floating-btn.back-to-top i {
        color: #ffffff !important;
    }
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    background-color: #3b82f6;
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

.floating-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.floating-btn.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.back-to-top {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
}

.contact-support {
    background: linear-gradient(135deg, #10b981, #34d399);
    text-decoration: none;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .floating-btn {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .floating-buttons {
        bottom: 100px !important;
        right: 20px !important;
        gap: 8px;
        display: flex !important;
        z-index: 1002 !important;
    }
    
    /* Hide contact support button on mobile */
    .floating-buttons .contact-support {
        display: none;
    }
}

/* Tablet Responsive (768-1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .floating-buttons {
        bottom: 100px !important;
        right: 20px !important;
        display: flex !important;
        z-index: 1002 !important;
    }

    /* Hide contact support button on tablet */
    .floating-buttons .contact-support {
        display: none;
    }
}

/* Animations */
@keyframes pulse {

    0%,
    100% {
        opacity: 0.1;
    }

    50% {
        opacity: 0.15;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-12px);
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll Animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 7:3 Layout Styles */
.main-layout {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    gap: 40px;
    padding: 0 20px;
    
}

.left-content {
    flex: 0 0 70%;
    max-width: 70%;
}

.right-sidebar {
    flex: 0 0 30%;
    max-width: 30%;
    position: relative;
    height: auto;
    overflow-y: visible;
    margin-top: 200px;
    padding-left: 40px;
}

.right-sidebar::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, #3b82f6, #6366f1, #ec4899, #f97316);
}

/* Sidebar Header Styles */
.sidebar-header {
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    color: white;
    padding: 14px 12px;
    border-radius: 16px;
    margin-bottom: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.sidebar-header h3 {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 8px 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.sidebar-header p {
    font-size: 14px;
    margin: 0;
    opacity: 0.9;
    font-weight: 500;
}

/* Competition Category Styles */
.competition-category {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.competition-category:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.category-header {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 16px 12px;
    position: relative;
    min-height: 60px;
    display: flex;
    align-items: center;
}

.category-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.8), rgba(99, 102, 241, 0.8));
    backdrop-filter: blur(5px);
}

.category-header h3 {
    position: relative;
    z-index: 2;
    color: white;
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    padding: 10px 20px;
}

.category-subsection:first-child {
    margin-top: 0;
}

.category-subsection:last-child {
    margin-bottom: 0;
}

.subsection-title {
    font-size: 16px;
    font-weight: 600;
    color: #3b82f6;
    margin-bottom: 12px;
    padding: 10px 24px;
    border-bottom: 2px solid rgba(59, 130, 246, 0.2);
}

.competition-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px 24px;
}

.competition-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 12px;
    background: rgba(248, 250, 252, 0.8);
    border-radius: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.competition-item a {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    text-decoration: none;
    color: inherit;
}

.competition-item:hover {
    background: rgba(59, 130, 246, 0.05);
    border-color: rgba(59, 130, 246, 0.2);
    transform: translateX(4px);
}

.competition-item.active {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

.competition-logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, #3b82f6, #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    flex-shrink: 0;
}

.competition-name {
    font-size: 14px;
    font-weight: 500;
    color: #475569;
    line-height: 1.4;
    flex-grow: 1;
}

/* Mobile Responsive for 7:3 Layout */
@media (max-width: 1024px) {
    .main-layout {
        flex-direction: column;
        gap: 30px;
    }
    
    .left-content {
        flex: 1;
        max-width: 100%;
    }
    
    .right-sidebar {
        display: none;
    }
    
    .right-sidebar::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .main-layout {
        padding: 0 16px;
        gap: 24px;
    }
    
    .right-sidebar {
        display: none;
    }
    
    .sidebar-header {
        padding: 20px 16px;
        margin-bottom: 20px;
    }
    
    .sidebar-header h3 {
        font-size: 20px;
    }
    
    .sidebar-header p {
        font-size: 13px;
    }
    
    .competition-category {
        margin-bottom: 20px;
    }
    
    .category-header {
        padding: 20px 16px;
        min-height: 70px;
    }
    
    .category-header h3 {
        font-size: 18px;
    }
    
    .subsection-title {
        font-size: 15px;
        margin-bottom: 12px;
    }
    
    .competition-item {
        padding: 10px 12px;
        gap: 10px;
    }
    
    .competition-logo {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
    
    .competition-name {
        font-size: 13px;
    }
}

/* Partners Section Styles */
#partners {
    margin-top: 100px;
}

#partners .section-header {
    text-align: center;
    margin-bottom: 60px;
    padding: 0 0 0 45px;
}

/* 移动端响应式样式 - 合作伙伴容器居中显示 */
@media (max-width: 1024px) {
    #partners .section-header {
        padding: 0 16px;
        width: 100%;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    #partners .section-header {
        padding: 0 16px;
    }
}

#partners .section-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(220, 252, 231, 0.5);
    border: 1px solid rgba(187, 247, 208, 0.8);
    border-radius: 15px;
    font-size: 22px;
    font-weight: 700;
    color: #10b981;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    backdrop-filter: blur(10px);
}

#partners .section-title {
    font-size: 48px;
    font-weight: 200;
    color: #1e293b;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    justify-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.partner-logo {
    transition: all 0.3s ease;
}

.partner-logo.circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    margin-bottom: 16px;
}

.partner-logo.circle img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    filter: grayscale(100%); /* 初始灰色状态 */
    transition: filter 0.3s ease;
}

.partner-logo.button {
    padding: 12px 32px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background-color: #ffffff;
    color: #334155;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    filter: grayscale(100%); /* 初始灰色状态 */
}

/* 鼠标悬停效果 */
.partner-item:hover .partner-logo.circle img {
    filter: grayscale(0%); /* 恢复原色 */
}

.partner-name {
    font-size: 16px;
    font-weight: 300;
    color: #334155;
    text-align: center;
}

/* Partners Section Responsive */
@media (max-width: 768px) {
    #partners .section-title {
        font-size: 24px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        padding: 0 20px;
    }
    
    .partner-logo.circle {
        width: 100px;
        height: 100px;
    }
}