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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    padding: 20px 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: background 0.3s ease;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(45deg, #f7931e, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid transparent;
}

.nav-links a:hover {
    color: #f7931e;
    border-color: rgba(247, 147, 30, 0.3);
    background: rgba(247, 147, 30, 0.1);
}

/* Mobile Menu Styles */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #f7931e;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    z-index: 999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
    opacity: 0;
    transform: translateY(-100%);
    transition: all 0.3s ease;
}

.mobile-menu.active {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu a {
    color: #ffffff;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 15px 30px;
    border-radius: 25px;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    text-align: center;
    min-width: 200px;
}

.mobile-menu a:hover {
    color: #f7931e;
    border-color: #f7931e;
    background: rgba(247, 147, 30, 0.1);
    transform: scale(1.05);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(247, 147, 30, 0.1) 0%, transparent 70%);
    position: relative;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #ffffff, #f7931e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #cccccc;
}

.feature-icon {
    width: 20px;
    height: 20px;
    background: #f7931e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #000;
}

/* Trading Platforms Section */
.platforms {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.02);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #ffffff, #f7931e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: #cccccc;
    margin-bottom: 60px;
    font-size: 1.1rem;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.platform-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(247, 147, 30, 0.1), transparent);
    transition: left 0.5s ease;
}

.platform-card:hover::before {
    left: 100%;
}

.platform-card:hover {
    transform: translateY(-10px);
    border-color: #f7931e;
    box-shadow: 0 20px 40px rgba(247, 147, 30, 0.2);
}

.platform-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    background: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.platform-logo img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.platform-card:hover .platform-logo {
    background: #ffffff;
    border-color: #f7931e;
    box-shadow: 0 8px 25px rgba(247, 147, 30, 0.3);
    transform: scale(1.05);
}

.platform-card:hover .platform-logo img {
    transform: scale(1.1);
}

.platform-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.platform-desc {
    color: #cccccc;
    margin-bottom: 25px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.platform-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Button Styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(45deg, #f7931e, #ffd700);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(247, 147, 30, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: #f7931e;
    background: rgba(247, 147, 30, 0.1);
}

/* Features Section */
.features {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    text-align: center;
    padding: 30px 20px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(45deg, #f7931e, #ffd700);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: transform 0.3s ease;
}

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

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: #cccccc;
    font-size: 0.95rem;
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.02);
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    margin-bottom: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(247, 147, 30, 0.3);
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: all 0.3s ease;
    background: none;
    border: none;
    color: #ffffff;
    text-align: left;
    font-size: inherit;
    font-family: inherit;
}

.faq-question:hover {
    background: rgba(247, 147, 30, 0.1);
}

.faq-question:focus {
    outline: 2px solid #f7931e;
    outline-offset: 2px;
}

.faq-question span:first-child {
    flex: 1;
    padding-right: 20px;
}

.faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: #f7931e;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 25px 20px;
    color: #cccccc;
    display: none;
    animation: fadeIn 0.3s ease;
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    display: block;
}

/* Footer */
.footer {
    padding: 60px 0 30px;
    background: rgba(0, 0, 0, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: #f7931e;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #f7931e;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #888;
}

/* Floating particles background */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #f7931e;
    border-radius: 50%;
    opacity: 0.3;
    animation: float 6s infinite linear;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header {
        padding: 15px 0;
    }

    .hero {
        padding: 100px 0 60px; /* 减少padding，因为导航栏现在更小 */
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }

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

    .platform-buttons {
        flex-direction: column;
    }

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

    /* 显示汉堡菜单，隐藏桌面导航 */
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 20px;
    }

    .faq-question {
        padding: 15px 20px;
        font-size: 0.95rem;
    }

    .faq-answer {
        padding: 0 20px 15px;
        font-size: 0.9rem;
    }

    .platforms {
        padding: 60px 0;
    }

    .features {
        padding: 60px 0;
    }

    .faq {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 12px 0;
    }

    .hero {
        padding: 90px 0 40px; /* 进一步减少padding */
    }

    .hero h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .platform-card {
        padding: 20px;
    }

    .container {
        padding: 0 15px;
    }

    .logo {
        font-size: 20px;
    }

    .mobile-menu a {
        font-size: 1.3rem;
        min-width: 180px;
        padding: 12px 25px;
    }

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

    .faq-question {
        padding: 12px 15px;
        font-size: 0.9rem;
    }

    .faq-question span:first-child {
        padding-right: 15px;
    }

    .faq-answer {
        padding: 0 15px 12px;
        font-size: 0.85rem;
    }

    .platforms {
        padding: 40px 0;
    }

    .features {
        padding: 40px 0;
    }

    .faq {
        padding: 40px 0;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #f7931e;
    animation: spin 1s ease-in-out infinite;
}

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

/* Scroll to top button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #f7931e, #ffd700);
    border: none;
    border-radius: 50%;
    color: #000;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(247, 147, 30, 0.3);
}