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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #0a0c12;
    color: #e2e4e9;
    line-height: 1.5;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 头部 */
.header {
    background: rgba(10, 12, 18, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #2a2e3a;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo-text {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, #f7931a, #ffd966);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo-highlight {
    color: #f7931a;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: #e2e4e9;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: #f7931a;
}

.header-btns {
    display: flex;
    gap: 12px;
}

.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    text-align: center;
}

.btn-reg {
    background: transparent;
    border: 1px solid #f7931a;
    color: #f7931a;
}

.btn-reg:hover {
    background: rgba(247, 147, 26, 0.1);
}

.btn-download {
    background: #f7931a;
    color: #0a0c12;
    border: none;
}

.btn-download:hover {
    background: #ffaa33;
    transform: translateY(-2px);
}

.btn-primary {
    background: #f7931a;
    color: #0a0c12;
    padding: 12px 28px;
    font-size: 18px;
}

.btn-outline {
    border: 1px solid #f7931a;
    color: #f7931a;
    background: transparent;
    padding: 12px 28px;
}

.btn-large {
    padding: 14px 36px;
    font-size: 18px;
}

/* 移动端菜单 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: #fff;
}

/* Hero */
.hero {
    padding: 80px 0 60px;
    background: radial-gradient(circle at 10% 30%, #131724, #0a0c12);
}

.hero-grid {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 48px;
    background: linear-gradient(135deg, #fff, #f7931a);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 30px;
    color: #b0b3c0;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.hero-stats div {
    font-size: 16px;
    color: #9ca3af;
}

.hero-stats span {
    font-size: 28px;
    font-weight: 700;
    color: #f7931a;
    display: block;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.phone-mock {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #1e1f2c, #12131c);
    border-radius: 36px;
    border: 1px solid #2e3241;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    position: relative;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 200" fill="%23f7931a20"><rect x="20" y="40" width="60" height="120" rx="10"/><circle cx="50" cy="180" r="8"/></svg>');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 60%;
}

/* 功能卡片 */
.features {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
}

.section-title span {
    display: block;
    font-size: 16px;
    color: #f7931a;
    margin-top: 8px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.feature-card {
    background: #13161f;
    border-radius: 24px;
    padding: 32px 24px;
    transition: transform 0.2s;
    border: 1px solid #252a36;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #f7931a;
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.download-area {
    padding: 40px 0 80px;
}

.download-card {
    background: linear-gradient(135deg, #1e2a3a, #0f1722);
    border-radius: 48px;
    padding: 48px 32px;
    text-align: center;
    border: 1px solid #f7931a40;
}

.qr-placeholder {
    width: 140px;
    height: 140px;
    background: #fff;
    margin: 24px auto;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-weight: bold;
}

.btn-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* 新闻预览 */
.news-preview, .news-page {
    padding: 40px 0 80px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.news-item {
    background: #13161f;
    border-radius: 20px;
    padding: 24px;
    border-left: 4px solid #f7931a;
}

.news-date {
    font-size: 14px;
    color: #f7931a;
    margin-bottom: 8px;
}

.news-title a {
    font-size: 22px;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
}

.news-title a:hover {
    color: #f7931a;
}

.news-summary {
    color: #a0a5b5;
    margin-top: 8px;
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 32px;
}

/* 面包屑 */
.breadcrumb {
    padding: 20px 0 10px;
    font-size: 14px;
    color: #9ca3af;
}

.breadcrumb a {
    color: #f7931a;
    text-decoration: none;
}

/* 关于/联系/产品页通用样式 */
.about-section, .contact-section, .products-section {
    padding: 60px 0;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px;
    background: #13161f;
    border: 1px solid #2a2e3a;
    border-radius: 12px;
    color: #fff;
    margin-bottom: 16px;
}

.contact-form button {
    background: #f7931a;
    border: none;
    padding: 12px 24px;
    border-radius: 40px;
    font-weight: bold;
    cursor: pointer;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.product-card {
    background: #13161f;
    border-radius: 24px;
    padding: 32px;
    text-align: center;
}

/* 页脚 */
.footer {
    background: #07090e;
    padding: 48px 0 24px;
    border-top: 1px solid #252a36;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 16px;
    color: #f7931a;
}

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

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col a {
    color: #9ca3af;
    text-decoration: none;
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #1e2129;
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .mobile-toggle {
        display: flex;
    }
    .hero-content h1 {
        font-size: 32px;
    }
    .btn-group {
        flex-direction: column;
        align-items: center;
    }
}