* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
html {
    scroll-behavior: smooth;
}
body {
    background-color: #000000;
    color: #ffffff;
    overflow-x: hidden;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部通知栏 */
.top-bar {
    background-color: #bfff00;
    color: #000000;
    padding: 10px 0;
    text-align: center;
    font-size: 14px;
    position: relative;
}
.top-bar .close {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    font-weight: bold;
}

/* 导航栏 */
header {
    background-color: #000000;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 999;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #bfff00;
    font-size: 20px;
    font-weight: 700;
}
.logo-icon {
    width: 32px;
    height: 32px;
    background-color: #bfff00;
    border-radius: 50%;
    position: relative;
}
.logo-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background-color: #000;
    clip-path: polygon(0 0, 100% 0, 100% 50%, 50% 100%, 0 50%);
}
nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
}
nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}
nav a:hover {
    color: #bfff00;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}
.try-btn {
    background-color: #bfff00;
    color: #000000;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
}
.lang-select {
    background-color: #222222;
    color: #ffffff;
    padding: 8px 12px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
}
.mobile-menu {
    display: none;
    font-size: 24px;
    color: #bfff00;
    cursor: pointer;
}

/* 英雄区 */
.hero {
    background-color: #000000;
    padding: 80px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
}
.hero-content {
    flex: 1;
    min-width: 300px;
}
.hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}
.hero-title .highlight {
    color: #bfff00;
}
.hero-desc {
    font-size: 18px;
    color: #cccccc;
    margin-bottom: 25px;
    line-height: 1.6;
}
.hero-tags {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.tag {
    display: flex;
    align-items: center;
    gap: 5px;
    background-color: #222222;
    color: #bfff00;
    padding: 8px 15px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
}
.tag::before {
    content: '✓';
    font-weight: bold;
}
.download-btn {
    background-color: #bfff00;
    color: #000000;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
}
.hero-phone {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 支持伙伴 */
.partners {
    background-color: #111111;
    padding: 40px 0;
}
.partners-title {
    text-align: center;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 30px;
}
.partners-logos {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.partner-logo {
    height: 30px;
    filter: brightness(0) invert(1);
    opacity: 0.8;
    transition: opacity 0.3s;
}
.partner-logo:hover {
    opacity: 1;
}

/* Gas Pool 功能区 */
.gas-pool {
    background-color: #111;
    padding: 70px 0;
}
.gas-pool-content {
    flex: 1;
    min-width: 300px;
}
.gas-pool-title {
    font-size: 32px;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 20px;
}
.gas-pool-desc {
    color: #ccc;
    line-height: 1.7;
    margin-bottom: 20px;
}
.gas-pool-features {
    padding-left: 20px;
    color: #ccc;
    line-height: 1.8;
}
.gas-pool-visual {
    flex: 1;
    min-width: 280px;
    display: flex;
    justify-content: center;
}

/* BOSS Wallet 介绍区 */
.boss-intro {
    background-color: #111;
    padding: 70px 0;
}
.boss-phones {
    flex: 1;
    min-width: 300px;
    position: relative;
    height: 450px;
}
.boss-content {
    flex: 1;
    min-width: 300px;
}
.boss-title {
    font-size: 32px;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 15px;
}
.boss-subtitle {
    color: #ccc;
    margin-bottom: 30px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* 为什么选择我们 */
.why-us {
    background-color: #000000;
    padding: 80px 0;
}
.why-us-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 50px;
}
.why-us-title .highlight {
    color: #bfff00;
}
.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.why-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}
.why-content h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
}
.why-content p {
    font-size: 14px;
    color: #cccccc;
    line-height: 1.6;
}

/* 聚合器算法区 */
.aggregator {
    background-color: #bfff00;
    color: #000000;
    padding: 80px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
}
.aggregator-content {
    flex: 1;
    min-width: 300px;
}
.aggregator-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}
.aggregator-desc {
    font-size: 16px;
    margin-bottom: 30px;
    line-height: 1.8;
}
.learn-more-btn {
    background-color: #000000;
    color: #bfff00;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
}

/* 如何使用 */
.how-to-use {
    background-color: #000;
    padding: 80px 0;
}
.how-to-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #fff;
}
.step-btn {
    padding: 24px;
    background: #111;
    border-radius: 12px;
    cursor: pointer;
    border: 1px solid #333;
}
.step-btn h3 {
    margin: 0 0 8px;
    color: #fff;
}
.step-btn p {
    margin: 0;
    color: #ccc;
    line-height: 1.6;
}

/* 用户/开发者区 */
.user-dev {
    background-color: #000000;
    padding: 80px 0;
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}
.user-card {
    flex: 1;
    min-width: 300px;
    background-color: #bfff00;
    color: #000000;
    padding: 40px;
    border-radius: 16px;
}
.dev-card {
    flex: 1;
    min-width: 300px;
    background-color: #111111;
    padding: 40px;
    border-radius: 16px;
    position: relative;
}
.code-block {
    font-family: 'Courier New', Courier, monospace;
    font-size: 12px;
    color: #cccccc;
    line-height: 1.5;
}
.learn-more-link {
    color: #bfff00;
    text-decoration: none;
    font-weight: 600;
}

/* 下载区 */
.download {
    background: #000;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.download-content {
    flex: 1;
    min-width: 300px;
    z-index: 2;
}
.download-title {
    font-size: 48px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 25px;
}
.download-desc {
    color: #ccc;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 30px;
}
.store-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #bfff00;
    color: #000;
    padding: 14px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    width: fit-content;
}
.download-visual {
    flex: 1;
    min-width: 300px;
    position: relative;
    height: 550px;
    z-index: 1;
}

/* 文章新闻区 */
.article-section {
    background-color: #1a1a1a;
    padding: 60px 0;
}
.article-title {
    color: #bfff00;
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 40px;
}
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.news-card {
    background-color: #222;
    border-radius: 12px;
    padding: 24px;
    height: 100%;
}
.news-card h3 {
    color: #fff;
    font-size: 20px;
    margin: 0 0 12px;
}
.news-card p {
    color: #ccc;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

/* 页脚 */
footer {
    background-color: #000000;
    padding: 60px 0;
}
.footer-brand {
    flex: 1;
    min-width: 300px;
    background-color: #bfff00;
    color: #000000;
    padding: 40px;
    border-radius: 16px;
}
.footer-links {
    flex: 2;
    min-width: 300px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #bfff00;
}
.footer-column ul {
    list-style: none;
}
.footer-column ul li {
    margin-bottom: 10px;
}
.footer-column ul li a {
    color: #cccccc;
    text-decoration: none;
    font-size: 14px;
}

/* 响应式 */
@media (max-width: 768px) {
    nav ul {
        display: none;
    }
    .mobile-menu {
        display: block;
    }
    .hero-title,
    .download-title {
        font-size: 32px;
    }
    .why-us-grid {
        grid-template-columns: 1fr;
    }
    .article-grid {
        grid-template-columns: 1fr;
    }
}

/* 一键返回顶部箭头 */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #bfff00;
    color: #000;
    font-size: 22px;
    font-weight: bold;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
}
#backToTop:hover {
    background-color: #a6e600;
}