/* 全局样式 - 币圈金融风格 */
:root {
    --primary-color: #1a73e8;
    --secondary-color: #0f62fe;
    --accent-color: #00d4aa;
    --dark-color: #121212;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部栏 */
.top-bar {
    background-color: var(--dark-color);
    color: white;
    padding: 10px 0;
    font-size: 14px;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-links a {
    color: #ccc;
    text-decoration: none;
    margin-left: 20px;
    transition: var(--transition);
}

.top-bar-links a:hover {
    color: var(--accent-color);
}

/* 头部 */
.header {
    background-color: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--dark-color);
    font-weight: bold;
    font-size: 24px;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    color: var(--primary-color);
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

/* 面包屑导航 */
.breadcrumb {
    background-color: #f1f5f9;
    padding: 15px 0;
    margin-bottom: 30px;
}

.breadcrumb ul {
    display: flex;
    list-style: none;
}

.breadcrumb li {
    margin-right: 10px;
    font-size: 14px;
}

.breadcrumb li:not(:last-child)::after {
    content: '>';
    margin-left: 10px;
    color: var(--gray-color);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb .current {
    color: var(--gray-color);
}

/* 主要内容区域 */
.main-content {
    padding: 40px 0;
    min-height: 60vh;
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    font-size: 14px;
    color: #aaa;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn-accent {
    background-color: var(--accent-color);
}

.btn-accent:hover {
    background-color: #00b894;
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.btn-download {
    background: linear-gradient(135deg, #ff9500, #ff5e3a);
    color: white;
    font-weight: bold;
    border-radius: 50px;
    padding: 15px 35px;
    font-size: 16px;
    box-shadow: 0 6px 20px rgba(255, 94, 58, 0.3);
}

.btn-download:hover {
    background: linear-gradient(135deg, #ff5e3a, #ff9500);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 94, 58, 0.4);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #1a2980, #26d0ce);
    color: white;
    padding: 80px 0;
    text-align: center;
    border-radius: var(--border-radius);
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

/* 卡片 */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
    transition: var(--transition);
    height: 100%;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

/* 网格布局 */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

/* 特色区域 */
.features {
    margin: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--dark-color);
}

.section-title span {
    color: var(--primary-color);
}

/* 新闻列表 */
.news-list {
    margin: 40px 0;
}

.news-item {
    border-bottom: 1px solid #eee;
    padding: 25px 0;
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    color: var(--gray-color);
    font-size: 14px;
    margin-bottom: 10px;
}

.news-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.news-title a {
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
}

.news-title a:hover {
    color: var(--primary-color);
}

.news-excerpt {
    color: #666;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: white;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        transition: left 0.3s ease;
        padding: 20px;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 10px 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .btn-download {
        display: block;
        width: 100%;
        margin-bottom: 10px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 50px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .card {
        padding: 20px;
    }
}

/* 浮动行动按钮 */
.floating-buttons {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.floating-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff9500, #ff5e3a);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-weight: bold;
    box-shadow: 0 6px 20px rgba(255, 94, 58, 0.4);
    transition: var(--transition);
    font-size: 14px;
    text-align: center;
    padding: 5px;
}

.floating-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(255, 94, 58, 0.6);
}

@media (max-width: 768px) {
    .floating-buttons {
        bottom: 20px;
        right: 20px;
    }
    
    .floating-btn {
        width: 55px;
        height: 55px;
        font-size: 13px;
    }
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 20px;
}

.product-title {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

/* 公告样式 */
.notice {
    background-color: #fff8e1;
    border-left: 4px solid #ffc107;
    padding: 15px;
    margin: 20px 0;
    border-radius: 4px;
}

/* 合作伙伴 */
.partners {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
}

.partner-logo {
    height: 50px;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.partner-logo:hover {
    filter: grayscale(0);
    opacity: 1;
}