* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
body { font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; background: #fcfcfc; color: #333; line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: 0.3s; }
li { list-style: none; }

:root { --ks-orange: #ff5000; --ks-hover: #ff8500; --ks-bg: #f7f7f9; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

header { background: #fff; border-bottom: 1px solid #eee; position: sticky; top: 0; z-index: 100; }
.nav-wrapper { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; }
.logo-area { display: flex; align-items: center; }
.logo-box { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-right: 12px; overflow: hidden; }
.logo-box img { width: 100%; height: 100%; object-fit: cover; display: block; }
.logo-text h1 { font-size: 18px; color: #111; font-weight: bold; }
.logo-text p { font-size: 11px; color: #999; }
.nav-links { display: flex; gap: 30px; }
.nav-links a:hover { color: var(--ks-orange); }

.recharge-hero { 
    padding: 90px 0; 
    background: linear-gradient(135deg, #ff6a00 0%, #ff5000 100%); 
    text-align: center; 
    position: relative; 
    overflow: hidden; 
    color: #fff;
}
.recharge-hero::before {
    content: ""; position: absolute; width: 400px; height: 400px; 
    background: rgba(255,255,255,0.1); border-radius: 50%; 
    top: -150px; left: -100px; z-index: 1;
}
.recharge-hero::after {
    content: ""; position: absolute; width: 250px; height: 250px; 
    background: rgba(255,255,255,0.08); border-radius: 40px; 
    bottom: -50px; right: 5%; transform: rotate(20deg); z-index: 1;
}
.hero-content { position: relative; z-index: 2; }
.hero-title { font-size: 36px; font-weight: 800; margin-bottom: 10px; }
.hero-subtitle { font-size: 16px; opacity: 0.9; margin-bottom: 12px; }
.hero-subtitle-ios { display: block; width: 100%; text-align: center; margin-bottom: 32px; }
.hero-subtitle-ios span { display: inline-block; font-size: 12px; font-weight: 400; letter-spacing: 0.03em; color: rgba(255,255,255,0.92); padding: 4px 10px; border: 1px solid rgba(255,255,255,0.35); border-radius: 4px; background: rgba(255,255,255,0.06); }
.recharge-btn { 
    background: #fff; color: var(--ks-orange); 
    padding: 16px 65px; border-radius: 50px; 
    font-size: 18px; font-weight: bold; border: none; cursor: pointer; 
    box-shadow: 0 10px 20px rgba(0,0,0,0.1); transition: 0.3s;
}
.recharge-btn:hover { transform: scale(1.05); box-shadow: 0 15px 30px rgba(0,0,0,0.2); }

.faq-section { padding: 70px 0; background: #fff; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 { font-size: 28px; color: #111; }
.section-header p { color: #888; margin-top: 5px; }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
.faq-item { background: #f9f9f9; padding: 20px; border-radius: 12px; cursor: pointer; border: 1px solid transparent; }
.faq-item:hover { border-color: var(--ks-orange); background: #fff; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.faq-q { font-weight: bold; display: flex; justify-content: space-between; }
.faq-a { font-size: 14px; color: #666; display: none; margin-top: 10px; border-top: 1px dashed #ddd; padding-top: 10px; }

.desc-section { padding: 60px 0; background: #fcfcfc; }
.desc-box { background: #fff; border-radius: 20px; padding: 40px; border: 1px solid #eee; }
.desc-box h3 { margin-bottom: 20px; border-left: 4px solid var(--ks-orange); padding-left: 15px; }
.desc-list li { margin-bottom: 15px; font-size: 15px; color: #555; display: flex; align-items: flex-start; }
.desc-list li::before { content: "✓"; color: var(--ks-orange); font-weight: bold; margin-right: 10px; }

.news-section { padding: 70px 0; background: #fff; }
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-top: 30px; }
.news-card { border-radius: 15px; overflow: hidden; border: 1px solid #eee; transition: 0.3s; }
.news-section a.news-card { display: block; color: inherit; }
.news-card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.news-img { width: 100%; height: 160px; background: #f0f0f0; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; }
.news-body { padding: 20px; }
.news-body h4 { font-size: 17px; margin-bottom: 8px; }
.news-body p { font-size: 13px; color: #888; }

footer { background: #1a1a1a; color: #777; padding: 60px 0 30px; text-align: center; font-size: 13px; }
.footer-nav { margin-bottom: 25px; display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 4px 12px; }
.footer-nav-item:not(:last-child)::after { content: "|"; margin-left: 12px; color: #666; font-weight: normal; }
.footer-nav a { color: #999; }
.footer-nav a:hover { color: #fff; }
.copyright { border-top: 1px solid #333; padding-top: 25px; line-height: 2; }

.article-page { padding: 40px 0 60px; background: #fcfcfc; min-height: 60vh; }
.article-content { max-width: 780px; margin: 0 auto; background: #fff; border-radius: 16px; padding: 40px 48px; border: 1px solid #eee; box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.article-header { margin-bottom: 36px; padding-bottom: 24px; border-bottom: 1px solid #eee; }
.article-header h1 { font-size: 26px; color: #111; margin-bottom: 12px; line-height: 1.35; }
.article-lead { font-size: 15px; color: #555; line-height: 1.75; }
.article-section { margin-bottom: 32px; }
.article-section h2 { font-size: 18px; color: #111; margin-bottom: 16px; padding-left: 12px; border-left: 4px solid var(--ks-orange); }
.article-section h3 { font-size: 16px; color: #333; margin: 20px 0 10px; }
.article-section p { font-size: 15px; color: #444; line-height: 1.8; margin-bottom: 12px; }
.article-section strong { color: #222; }
.article-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid #eee; }
.article-footer p { margin-bottom: 10px; }
.article-footer a { color: var(--ks-orange); }
.article-footer a:hover { text-decoration: underline; }
.article-list { margin: 12px 0 16px; padding-left: 24px; }
.article-list li { list-style: disc; margin-bottom: 6px; font-size: 15px; color: #444; line-height: 1.6; }
.price-table-wrap { overflow-x: auto; margin-top: 16px; border: 1px solid #eee; border-radius: 10px; }
.price-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.price-table th, .price-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid #eee; }
.price-table th { background: #f7f7f9; color: #333; font-weight: 600; }
.price-table tbody tr:nth-child(even) { background: #fafafa; }
.price-table tbody tr:hover { background: #fff5f0; }

.modal-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 200; align-items: center; justify-content: center; backdrop-filter: blur(4px); color: #111; }
.modal-content { background: #fff; padding: 35px; border-radius: 25px; text-align: center; width: 90%; max-width: 380px; position: relative; animation: zoomIn 0.3s ease; }
@keyframes zoomIn { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.close-btn { position: absolute; right: 20px; top: 15px; font-size: 28px; color: #ccc; cursor: pointer; }
.qr-wrap { width: 220px; height: 220px; background: #f5f5f5; margin: 20px auto; border-radius: 12px; display: flex; align-items: center; justify-content: center; border: 1px solid #eee; overflow: hidden; }
.qr-wrap img { width: 100%; height: 100%; object-fit: contain; display: block; }
.qr-footer { background: #fff5f0; color: var(--ks-orange); padding: 8px 20px; border-radius: 50px; font-weight: bold; display: inline-block; margin-top: 10px; font-size: 14px; }

@media (max-width: 768px) {
    header { padding-left: 24px; padding-right: 24px; }
    header .container { padding-left: 0; padding-right: 0; }
    .container { padding-left: 24px; padding-right: 24px; }
    .nav-links { display: none; }
    .faq-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 28px; }
    .desc-box { padding: 20px; }
    .article-content { padding: 24px 20px; }
    .article-header h1 { font-size: 22px; }
    .article-section h2 { font-size: 17px; }
    .price-table { font-size: 12px; }
    .price-table th, .price-table td { padding: 8px 10px; }
    .desc-list li { flex-wrap: wrap; }
    .desc-list li b { white-space: nowrap; flex-shrink: 0; }
    .desc-list li span { min-width: 0; }
    .footer-nav { gap: 4px 10px; }
    .footer-nav-item:not(:last-child)::after { margin-left: 10px; }
    .footer-nav a { font-size: 12px; }
}