/* Style 2 - 暗黑科技风/移动端优先 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body.dark-theme {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #0f1219;
    color: #ffffff;
    line-height: 1.5;
}

a {
    text-decoration: none;
}

html {
    scroll-behavior: smooth;
}

.wrapper {
    max-width: 800px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at top center, #1a233a 0%, #0f1219 100%);
}

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

.nav-dark {
    display: flex;
    gap: 20px;
}

.nav-dark a {
    color: #a0aabf;
    font-size: 15px;
    transition: color 0.3s;
}

.nav-dark a:hover, .nav-dark a.active {
    color: #ff6a00;
}

.logo-white {
    height: 40px;
}

.main-content {
    flex: 1;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.main-title {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(90deg, #ff8c00, #ff5500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.sub-title {
    font-size: 18px;
    color: #a0aabf;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.stats-dark {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.stat-dark-item {
    display: flex;
    flex-direction: column;
    font-size: 12px;
    color: #6b778c;
}

.stat-dark-item span {
    font-size: 24px;
    color: #ff6a00;
    font-weight: bold;
    margin-bottom: 5px;
}

.showcase {
    margin: 20px 0 40px;
    position: relative;
}

.showcase::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 20px;
    background: radial-gradient(ellipse, rgba(255,106,0,0.2) 0%, transparent 70%);
    filter: blur(10px);
}

.showcase-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.download-box {
    margin-bottom: 50px;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(90deg, #ff6a00, #ff3300);
    color: #fff;
    font-size: 20px;
    font-weight: bold;
    padding: 18px 50px;
    border-radius: 50px;
    box-shadow: 0 10px 25px rgba(255, 106, 0, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
    width: 100%;
    max-width: 350px;
}

.btn-primary:active {
    transform: scale(0.96);
}

.icon-win {
    width: 24px;
    height: 24px;
    margin-right: 12px;
    filter: brightness(0) invert(1);
}

.safe-tips {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    gap: 20px;
    color: #6b778c;
    font-size: 13px;
}

.platforms {
    text-align: center;
    margin-top: 20px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.platforms h3 {
    font-size: 16px;
    color: #8892a3;
    margin-bottom: 25px;
    font-weight: normal;
}

.platform-list {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.platform-item:hover {
    opacity: 1;
}

.platform-item img {
    width: 32px;
    height: 32px;
    margin-bottom: 8px;
    filter: brightness(0) invert(1);
}

.platform-item span {
    font-size: 12px;
    color: #a0aabf;
}

.download-seo,
.download-faq {
    margin-top: 42px;
    padding: 28px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 18px;
    background: rgba(255,255,255,0.04);
    text-align: left;
}

.download-seo h2,
.download-faq h2 {
    color: #fff;
    font-size: 24px;
    margin-bottom: 16px;
    text-align: center;
}

.download-seo p,
.download-faq p {
    color: #a0aabf;
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 12px;
}

.seo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.seo-tags span {
    padding: 8px 12px;
    border-radius: 999px;
    color: #ffb36b;
    background: rgba(255,106,0,0.12);
    border: 1px solid rgba(255,106,0,0.24);
    font-size: 13px;
}

.download-faq article {
    padding: 18px 0;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.download-faq h3 {
    color: #ffb36b;
    font-size: 18px;
    margin-bottom: 8px;
}

.footer-dark {
    text-align: center;
    padding: 30px 20px;
    color: #505a6e;
    font-size: 13px;
}

.copyright {
    margin-top: 5px;
    opacity: 0.5;
}

/* 响应式 */
@media (max-width: 480px) {
    .topbar {
        flex-direction: column;
        gap: 15px;
    }
    .main-title {
        font-size: 32px;
    }
    .btn-primary {
        font-size: 18px;
        padding: 15px 30px;
    }
    .platform-list {
        gap: 20px;
    }
}