/* style.css - Token钱包官网完整样式 */

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

:root {
    --primary-color: #3a86ff;
    --primary-dark: #2667cc;
    --secondary-color: #8338ec;
    --success-color: #38b000;
    --warning-color: #ffbe0b;
    --danger-color: #ff006e;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
    --container-width: 1200px;
    --header-height: 70px;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

/* 工具类 */
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 3rem; }

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 48px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(58, 134, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(58, 134, 255, 0.4);
}

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    min-height: 56px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--box-shadow);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.logo img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    margin: 0;
}

.nav-link {
    padding: 0.5rem 1.25rem;
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    border-radius: 50px;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--gray-100);
}

.nav-link.active {
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    box-shadow: 0 4px 12px rgba(58, 134, 255, 0.25);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    border-radius: 3px;
    transition: var(--transition);
}

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

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

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

/* 语言选择器 */
.language-selector select {
    padding: 0.5rem;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    background-color: white;
    color: var(--gray-700);
    font-size: 0.9rem;
    cursor: pointer;
    outline: none;
}

/* 通用区域样式 */
.section {
    padding: 5rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* 首页横幅 */
.hero-section {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 4rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.1);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: perspective(1000px) rotateY(0deg);
}

/* 下载安装部分 */
.download-section {
    background-color: white;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.download-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--box-shadow);
    border: 2px solid var(--gray-200);
    transition: var(--transition);
}

.download-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
}

.platform-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.version {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.download-options {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.download-btn {
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.download-btn:hover {
    background: var(--primary-dark);
}

.download-btn.secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.download-btn.secondary:hover {
    background: var(--gray-300);
}

.system-requirements {
    color: var(--gray-500);
    font-size: 0.85rem;
}

.security-note {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border-left: 4px solid var(--warning-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    max-width: 800px;
    margin: 0 auto;
}

.security-note h4 {
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.security-note p {
    color: var(--gray-700);
    margin: 0;
}

/* 使用教程部分 */
.tutorial-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.tutorial-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.step-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    position: relative;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.step-number {
    position: absolute;
    top: -20px;
    left: 20px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.step-card p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.step-tip {
    background: var(--gray-100);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--gray-700);
    border-left: 3px solid var(--primary-color);
}

.video-tutorial {
    max-width: 800px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    background: var(--dark-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 2rem;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-placeholder {
    text-align: center;
    color: white;
}

.play-button {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.play-button:hover {
    transform: scale(1.1);
    background: var(--primary-dark);
}

.tutorial-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.tutorial-link {
    padding: 0.75rem 1.5rem;
    background: white;
    border: 2px solid var(--gray-300);
    border-radius: 50px;
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
}

.tutorial-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* DEX交易部分 */
.dex-section {
    background-color: white;
}

.dex-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.dex-feature {
    text-align: center;
    padding: 2rem;
    background: var(--gray-100);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.dex-feature:hover {
    background: var(--gray-200);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.dex-feature h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--dark-color);
}

.dex-feature p {
    color: var(--gray-600);
    line-height: 1.7;
}

.dex-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.demo-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.demo-header {
    background: linear-gradient(135deg, var(--dark-color), #2d3748);
    color: white;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.demo-header h4 {
    margin: 0;
    font-size: 1.1rem;
}

.demo-badge {
    background: var(--success-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.demo-content {
    padding: 2rem;
}

.trade-input {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.amount-input {
    display: flex;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    overflow: hidden;
}

.amount-input input {
    flex: 1;
    padding: 1rem;
    border: none;
    font-size: 1.1rem;
    outline: none;
    background: white;
}

.token-select {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 1rem;
    background: var(--gray-100);
    min-width: 120px;
    font-weight: 600;
    color: var(--gray-800);
}

.dropdown {
    font-size: 0.8rem;
    color: var(--gray-600);
}

.balance {
    font-size: 0.85rem;
    color: var(--gray-600);
    text-align: right;
}

.swap-arrow {
    align-self: center;
    background: var(--gray-200);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
}

.swap-arrow:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(180deg);
}

.trade-info {
    background: var(--gray-100);
    border-radius: 8px;
    padding: 1rem;
    margin: 1.5rem 0;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.info-row:last-child {
    border-bottom: none;
}

.info-row .good {
    color: var(--success-color);
    font-weight: 600;
}

.trade-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.trade-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(58, 134, 255, 0.4);
}

.supported-dex {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.supported-dex h4 {
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

.dex-logos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.dex-logo {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    color: var(--gray-800);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.dex-logo:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* 质押赚币部分 */
.staking-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.staking-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.staking-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    position: relative;
    transition: var(--transition);
    border: 2px solid transparent;
}

.staking-card.featured {
    border-color: var(--primary-color);
}

.staking-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.staking-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.staking-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.coin-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.staking-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--dark-color);
}

.apr {
    font-size: 1.1rem;
    color: var(--success-color);
    font-weight: 700;
}

.staking-desc {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.staking-details {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.detail {
    display: flex;
    justify-content: space-between;
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed var(--gray-300);
}

.detail:last-child {
    border-bottom: none;
}

.detail span:first-child {
    color: var(--gray-600);
}

.detail span:last-child {
    font-weight: 600;
    color: var(--dark-color);
}

.low-risk {
    color: var(--success-color);
}

.medium-risk {
    color: var(--warning-color);
}

.stake-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.stake-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.staking-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.stat-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* 新闻动态部分 */
.news-section {
    background-color: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.news-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.news-card.featured-news {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 100px 1fr;
}

.news-date {
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.date-day {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.date-month {
    font-size: 0.9rem;
    opacity: 0.9;
}

.news-content {
    padding: 1.5rem;
}

.news-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--gray-100);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.news-content h3 {
    margin: 0 0 1rem;
    font-size: 1.25rem;
}

.news-content h3 a {
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
}

.news-content h3 a:hover {
    color: var(--primary-color);
}

.news-excerpt {
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.news-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--gray-500);
}

.newsletter-section {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: 3rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: var(--border-radius);
}

.newsletter-section h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.newsletter-section p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
    max-width: 400px;
    margin: 0 auto 1rem;
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.newsletter-form input:focus {
    border-color: var(--primary-color);
}

.subscribe-btn {
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.subscribe-btn:hover {
    background: var(--primary-dark);
}

.privacy-note {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin: 0;
}

/* 关于我们部分 */
.about-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-intro h3 {
    font-size: 1.75rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.about-intro p {
    color: var(--gray-700);
    margin-bottom: 2rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.team-section {
    margin: 4rem 0;
}

.team-section h3 {
    font-size: 1.75rem;
    color: var(--dark-color);
    margin-bottom: 2rem;
    text-align: center;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-member {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-10px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 1rem;
}

.team-member h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.member-role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.member-bio {
    color: var(--gray-600);
    line-height: 1.6;
}

.contact-info {
    background: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.contact-info h3 {
    font-size: 1.75rem;
    color: var(--dark-color);
    margin-bottom: 2rem;
    text-align: center;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.contact-item h4 {
    margin: 0 0 0.25rem;
    font-size: 1.1rem;
    color: var(--dark-color);
}

.contact-item a, .contact-item p {
    color: var(--gray-600);
    text-decoration: none;
    margin: 0;
}

.contact-item a:hover {
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-main {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

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

.footer .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-tagline {
    color: var(--gray-400);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.link-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.link-group h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: white;
}

.link-group a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.link-group a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.copyright {
    color: var(--gray-400);
    margin-bottom: 1rem;
}

.disclaimer {
    color: var(--gray-500);
    font-size: 0.85rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-section .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .dex-demo {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 3rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--box-shadow);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .news-card.featured-news {
        grid-template-columns: 1fr;
    }
    
    .news-date {
        flex-direction: row;
        gap: 1rem;
        justify-content: center;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .tutorial-steps {
        grid-template-columns: 1fr;
    }
    
    .staking-options {
        grid-template-columns: 1fr;
    }
    
    .staking-stats {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
}