/* ========================================
   基础重置
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   顶部导航 - 白色背景
   ======================================== */
.site-header {
    background: #ffffff;
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    border-bottom: 1px solid #f0f0f0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

/* Logo */
.header-logo {
    flex-shrink: 0;
}
.header-logo a {
    display: block;
}
.header-logo img {
    height: 40px;
    width: auto;
    display: block;
}

/* 导航菜单 */
.header-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}
.header-nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    margin: 0;
    padding: 0;
}
.header-nav ul li a {
    color: #333;
    font-weight: 500;
    font-size: 15px;
    transition: 0.3s;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    text-decoration: none;
}
.header-nav ul li a:hover {
    color: #1a1a2e;
    border-bottom-color: #f0b90b;
}
.header-nav ul li a.active {
    color: #1a1a2e;
    border-bottom-color: #f0b90b;
}

/* 右侧操作区 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-shrink: 0;
}
.header-buttons {
    display: flex;
    gap: 10px;
}
.header-contact {
    color: #666;
    font-size: 13px;
}
.header-contact span {
    color: #999;
}

/* ===== 按钮样式 ===== */
.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    transition: 0.3s;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}
.btn-primary {
    background: #f0b90b;
    color: #1a1a2e;
    border: none;
}
.btn-primary:hover {
    background: #d4a00a;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(240, 185, 11, 0.3);
}
.btn-outline-dark {
    background: transparent;
    border: 1px solid #1a1a2e;
    color: #1a1a2e;
}
.btn-outline-dark:hover {
    background: #1a1a2e;
    color: #fff;
}
.btn-large {
    padding: 14px 40px;
    font-size: 18px;
}
.btn-outline-light {
    background: transparent;
    border: 2px solid #fff;
    color: #fff;
}
.btn-outline-light:hover {
    background: #fff;
    color: #1a1a2e;
}

/* ========================================
   幻灯片
   ======================================== */
.hero-slider {
    height: 90vh;
    min-height: 600px;
    position: relative;
    overflow: hidden;
}

.slide {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.slide::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 26, 0.5);
}

/* 粒子动画 */
.slide-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}
.slide-particles span {
    position: absolute;
    display: block;
    width: 6px;
    height: 6px;
    background: rgba(240, 185, 11, 0.25);
    border-radius: 50%;
    animation: floatUp 15s infinite linear;
}
.slide-particles span:nth-child(1) { left: 5%; animation-delay: 0s; animation-duration: 18s; }
.slide-particles span:nth-child(2) { left: 15%; animation-delay: 3s; animation-duration: 14s; width: 4px; height: 4px; }
.slide-particles span:nth-child(3) { left: 25%; animation-delay: 6s; animation-duration: 20s; }
.slide-particles span:nth-child(4) { left: 35%; animation-delay: 2s; animation-duration: 16s; width: 8px; height: 8px; }
.slide-particles span:nth-child(5) { left: 45%; animation-delay: 8s; animation-duration: 22s; }
.slide-particles span:nth-child(6) { left: 55%; animation-delay: 4s; animation-duration: 17s; width: 5px; height: 5px; }
.slide-particles span:nth-child(7) { left: 65%; animation-delay: 10s; animation-duration: 19s; }
.slide-particles span:nth-child(8) { left: 75%; animation-delay: 5s; animation-duration: 21s; width: 3px; height: 3px; }
.slide-particles span:nth-child(9) { left: 85%; animation-delay: 7s; animation-duration: 16s; }
.slide-particles span:nth-child(10) { left: 92%; animation-delay: 9s; animation-duration: 23s; width: 7px; height: 7px; }
.slide-particles span:nth-child(11) { left: 50%; animation-delay: 1s; animation-duration: 15s; }
.slide-particles span:nth-child(12) { left: 30%; animation-delay: 11s; animation-duration: 18s; width: 4px; height: 4px; }

@keyframes floatUp {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.slide-content {
    position: relative;
    z-index: 1;
    color: #fff;
    text-align: center;
    max-width: 1000px;
    padding: 20px;
}

.slide-badge {
    display: inline-block;
    background: rgba(240, 185, 11, 0.15);
    border: 1px solid rgba(240, 185, 11, 0.25);
    padding: 6px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.slide-content h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: 2px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.slide-content h1 span {
    color: #f0b90b;
}

.slide-desc {
    font-size: 1.2rem;
    opacity: 0.85;
    font-weight: 300;
    letter-spacing: 1px;
    margin-bottom: 4px;
}
.slide-desc-highlight {
    font-size: 1.2rem;
    color: #f0b90b;
    font-weight: 500;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.slide-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.slide-buttons .btn span {
    transition: 0.3s;
    display: inline-block;
}
.slide-buttons .btn:hover span {
    transform: translateX(6px);
}

/* 幻灯片底部统计数据 */
.slide-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
}
.slide-stat {
    text-align: center;
}
.slide-stat .stat-num {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #f0b90b;
}
.slide-stat .stat-label {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* 滚动指示器 */
.slide-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.slide-scroll-indicator span {
    display: block;
    width: 2px;
    height: 12px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 2px;
    animation: scrollDown 2s infinite ease-in-out;
}
.slide-scroll-indicator span:nth-child(2) {
    animation-delay: 0.3s;
    height: 16px;
}
.slide-scroll-indicator span:nth-child(3) {
    animation-delay: 0.6s;
    height: 20px;
}

@keyframes scrollDown {
    0%,
    100% {
        transform: scaleY(0.5);
        opacity: 0.3;
    }
    50% {
        transform: scaleY(1);
        opacity: 1;
    }
}

/* ========================================
   区块样式
   ======================================== */
.section {
    padding: 80px 0;
}
.section:nth-child(even) {
    background: #f8f9fa;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 8px;
}
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: #f0b90b;
    margin: 12px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: #888;
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto 50px;
}

/* ========================================
   交易产品
   ======================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}
.product-item {
    background: #fff;
    padding: 30px 20px 25px;
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.06);
    text-align: center;
    transition: 0.4s;
    border: 1px solid #f0f0f0;
    position: relative;
}
.product-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #f0b90b, #d4a00a);
    opacity: 0;
    transition: 0.4s;
}
.product-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.1);
    border-color: #f0b90b;
}
.product-item:hover::before {
    opacity: 1;
}
.product-icon {
    font-size: 2rem;
    font-weight: 700;
    color: #f0b90b;
    margin-bottom: 10px;
}
.product-item h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 4px;
}
.product-desc {
    color: #888;
    font-size: 0.85rem;
    margin-bottom: 12px;
}
.product-features {
    list-style: none;
    padding: 0;
    margin: 0;
}
.product-features li {
    font-size: 0.85rem;
    color: #555;
    padding: 3px 0;
}
.product-features li strong {
    color: #f0b90b;
}

/* ========================================
   交易账户
   ======================================== */
.account-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.account-item {
    background: #fff;
    padding: 35px 28px;
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.06);
    text-align: center;
    transition: 0.4s;
    border: 1px solid #f0f0f0;
    position: relative;
}
.account-item.featured {
    border-color: #f0b90b;
    box-shadow: 0 4px 30px rgba(240, 185, 11, 0.15);
}
.account-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.1);
}
.account-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: #f0b90b;
    color: #1a1a2e;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 14px;
    border-radius: 20px;
}
.account-icon {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 10px;
}
.account-item h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 4px;
}
.account-price {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 16px;
}
.account-price strong {
    color: #1a1a2e;
    font-size: 1.1rem;
}
.account-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    text-align: left;
}
.account-features li {
    font-size: 0.9rem;
    color: #555;
    padding: 4px 0;
    border-bottom: 1px dashed #f5f5f5;
}
.account-features li:last-child {
    border-bottom: none;
}
.account-features li strong {
    color: #f0b90b;
}
.account-item .btn {
    width: 100%;
}

/* ========================================
   底部 - 参考样式
   ======================================== */
.site-footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.8);
    padding: 50px 0 20px;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* 底部网格 */
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 50px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* 品牌介绍 */
.footer-brand h3 {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    letter-spacing: 1px;
}
.footer-brand h3 span {
    color: #f0b90b;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.5);
    max-width: 320px;
    margin-bottom: 15px;
}

/* 社交图标 */
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social .social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.4);
    font-size: 16px;
    transition: 0.3s;
    text-decoration: none;
}
.footer-social .social-icon:hover {
    background: #f0b90b;
    color: #1a1a2e;
    transform: translateY(-3px);
}

/* 栏目标题 */
.footer-col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

/* 栏目列表 */
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-col ul li {
    margin-bottom: 8px;
}
.footer-col ul li a {
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
    transition: 0.3s;
    text-decoration: none;
}
.footer-col ul li a:hover {
    color: #f0b90b;
}

/* 联系方式 */
.footer-contact li {
    color: rgba(255, 255, 255, 0.4);
    font-size: 14px;
    padding: 4px 0;
}
.footer-contact li strong {
    color: #f0b90b;
    font-weight: 600;
}
.footer-contact li a {
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: 0.3s;
}
.footer-contact li a:hover {
    color: #f0b90b;
}

/* 底部版权 */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-copy {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.25);
}
.footer-legal {
    display: flex;
    gap: 18px;
    align-items: center;
}
.footer-legal a {
    color: rgba(255, 255, 255, 0.2);
    font-size: 12px;
    text-decoration: none;
    transition: 0.3s;
}
.footer-legal a:hover {
    color: rgba(255, 255, 255, 0.5);
}

/* 后台登录 - 隐蔽 */
.footer-admin-link {
    color: rgba(255, 255, 255, 0.08) !important;
    font-size: 11px !important;
}
.footer-admin-link:hover {
    color: rgba(255, 255, 255, 0.3) !important;
}

/* ========================================
   底部 - 响应式
   ======================================== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
    .footer-brand p {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .site-footer {
        padding: 30px 0 15px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        padding-bottom: 20px;
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-legal {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    .footer-social {
        justify-content: center;
    }
    .footer-brand h3 {
        text-align: center;
    }
    .footer-brand p {
        text-align: center;
    }
    .footer-col h4 {
        text-align: center;
    }
    .footer-col ul {
        text-align: center;
    }
    .footer-contact li {
        text-align: center;
    }
}

/* ========================================
   统计数据
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 25px;
}
.stat-item {
    background: #fff;
    padding: 30px 15px;
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: 0.4s;
    border: 1px solid #f0f0f0;
}
.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}
.stat-icon {
    font-size: 1.8rem;
    font-weight: 700;
    color: #f0b90b;
    margin-bottom: 6px;
}
.stat-item .stat-number {
    display: block;
    font-size: 2.8rem;
    font-weight: 800;
    color: #f0b90b;
    line-height: 1.2;
}
.stat-item .stat-label {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-top: 4px;
}

/* 数字动画 */
.stat-number.animated {
    animation: countUp 0.8s ease forwards;
}
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   新闻
   ======================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}
.news-item {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.05);
    padding: 0;
    overflow: hidden;
    display: flex;
    border: 1px solid #f0f0f0;
    transition: 0.4s;
}
.news-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.08);
    border-color: #f0b90b;
}
.news-date-badge {
    min-width: 60px;
    background: #1a1a2e;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 15px 10px;
}
.news-date-badge .day {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.2;
}
.news-date-badge .month {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
}
.news-content-wrap {
    padding: 18px 20px;
    flex: 1;
}
.news-content-wrap h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.4;
}
.news-content-wrap h3 a {
    color: #1a1a2e;
    transition: 0.3s;
}
.news-content-wrap h3 a:hover {
    color: #f0b90b;
}
.news-content-wrap p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 8px;
    line-height: 1.6;
}
.news-content-wrap .read-more {
    font-size: 0.85rem;
    font-weight: 600;
    color: #f0b90b;
    transition: 0.3s;
}
.news-content-wrap .read-more:hover {
    color: #d4a00a;
    text-decoration: underline;
}
.news-empty {
    text-align: center;
    padding: 40px;
    color: #999;
    grid-column: 1 / -1;
}

/* ========================================
   底部
   ======================================== */
.site-footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.7);
    padding: 30px 0;
    margin-top: 40px;
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}
.footer-links {
    display: flex;
    gap: 20px;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: 0.3s;
}
.footer-links a:hover {
    color: #fff;
}
.footer-copy {
    font-size: 14px;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 992px) {
    .header-nav ul {
        gap: 15px;
    }
    .header-actions {
        gap: 10px;
    }
    .slide-content h1 {
        font-size: 3rem;
    }
    .slide-stats {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    .header-nav {
        width: 100%;
    }
    .header-nav ul {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .header-nav ul li a {
        font-size: 14px;
    }
    .header-actions {
        flex-direction: column;
        align-items: center;
        width: 100%;
    }
    .header-buttons {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    .header-contact {
        font-size: 12px;
    }

    .hero-slider {
        height: 70vh;
        min-height: 500px;
    }
    .slide-content h1 {
        font-size: 2.2rem;
    }
    .slide-desc {
        font-size: 1rem;
    }
    .slide-desc-highlight {
        font-size: 1rem;
    }
    .slide-stats {
        gap: 20px;
        flex-wrap: wrap;
    }
    .slide-stat .stat-num {
        font-size: 1.4rem;
    }

    .section {
        padding: 50px 0;
    }
    .section-title {
        font-size: 1.8rem;
    }

    .product-grid {
        grid-template-columns: 1fr 1fr;
    }
    .account-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .news-item {
        flex-direction: column;
    }
    .news-date-badge {
        flex-direction: row;
        padding: 10px 16px;
        min-width: auto;
        gap: 10px;
    }
    .news-date-badge .day {
        font-size: 1rem;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header-logo img {
        height: 32px;
    }
    .header-nav ul {
        gap: 8px;
    }
    .header-nav ul li a {
        font-size: 13px;
    }
    .btn {
        padding: 5px 12px;
        font-size: 12px;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .slide-buttons {
        flex-direction: column;
        align-items: center;
    }
    .slide-buttons .btn {
        width: 80%;
    }
    .slide-stats {
        gap: 15px;
    }
    .slide-stat .stat-num {
        font-size: 1.2rem;
    }
    .slide-stat .stat-label {
        font-size: 0.7rem;
    }
}