* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, sans-serif;
    background: #f5f7fa;
    color: #1f2937;
    line-height: 1.6;
}
a { text-decoration: none; color: inherit; }

.site-header {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 16px rgba(29,78,216,0.25);
}
.site-header .inner {
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-header .logo { font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.site-header .logo i { font-size: 22px; }
.site-nav { display: flex; gap: 26px; }
.site-nav a { color: rgba(255,255,255,0.9); font-size: 15px; padding: 6px 0; transition: color .2s; }
.site-nav a:hover, .site-nav a.active { color: #fff; }
.menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; }
.mobile-nav { display: none; flex-direction: column; background: rgba(0,0,0,0.2); padding: 8px 20px 14px; }
.mobile-nav.active { display: flex; }
.mobile-nav a { color: #fff; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,0.12); font-size: 15px; }

.hero {
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 55%, #3b82f6 100%);
    color: #fff;
    padding: 54px 20px 70px;
    text-align: center;
}
.hero-inner { max-width: 820px; margin: 0 auto; }
.hero h1 { font-size: 34px; font-weight: 800; margin-bottom: 14px; letter-spacing: 1px; }
.hero h1 a { color: #fff; text-decoration: none; transition: opacity .2s; }
.hero h1 a:hover, .hero h1 a:focus { color: #fff; text-decoration: none; opacity: .88; }
.hero-desc { font-size: 16px; color: rgba(255,255,255,0.92); margin-bottom: 28px; min-height: 24px; }

.query-box {
    background: #fff;
    border-radius: 16px;
    padding: 22px;
    box-shadow: 0 18px 50px rgba(0,0,0,0.22);
    max-width: 680px;
    margin: 0 auto;
}
.query-row { display: flex; gap: 12px; }
.query-input { flex: 1; position: relative; }
.query-input i { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: #94a3b8; font-size: 18px; }
.query-input input {
    width: 100%;
    padding: 15px 16px 15px 46px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    outline: none;
    transition: border-color .2s;
    font-family: inherit;
}

.query-input input:focus,
.query-input input:focus-visible,
.query-input input:active {
    border-color: #e2e8f0;
    outline: none;
    box-shadow: none;
}
.query-btn {
    background: linear-gradient(135deg, #f97316, #fb923c);
    color: #fff;
    padding: 0 30px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    transition: transform .2s, box-shadow .2s;
}
.query-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(249,115,22,0.4); }
.query-tip { margin-top: 14px; font-size: 13px; color: #64748b; }

.platform-badges {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    max-width: 780px;
    margin: 30px auto 0;
}
.platform-badges .pf {
    background: rgba(255,255,255,0.16);
    border: 1px solid rgba(255,255,255,0.28);
    color: #fff;
    padding: 11px 14px;
    border-radius: 999px;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
}
.platform-badges .pf i { font-size: 14px; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.block { padding: 50px 0 10px; }
.block-title { font-size: 26px; font-weight: 700; text-align: center; color: #1e293b; margin-bottom: 10px; }
.block-sub { text-align: center; color: #64748b; max-width: 760px; margin: 0 auto 30px; font-size: 15px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
    background: #fff; border-radius: 14px; padding: 26px 20px; text-align: center;
    box-shadow: 0 6px 20px rgba(0,0,0,0.06); transition: transform .2s, box-shadow .2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(0,0,0,0.1); }
.feature-card .ficon {
    width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 14px;
    background: linear-gradient(135deg, #2563eb, #3b82f6); color: #fff;
    display: flex; align-items: center; justify-content: center; font-size: 24px;
}
.feature-card h3 { font-size: 17px; color: #1e293b; margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: #64748b; }

.compare { padding: 40px 0; }
.compare-pro-card {
    background: #fff; border-radius: 16px; padding: 40px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center;
    box-shadow: 0 8px 28px rgba(0,0,0,0.07); margin-bottom: 26px;
}
.compare-pro-card.reverse { direction: rtl; }
.compare-pro-card.reverse > * { direction: ltr; }
.compare-pro-text h2 { font-size: 25px; color: #1e293b; margin-bottom: 16px; line-height: 1.35; }
.compare-pro-text p { color: #64748b; font-size: 15px; line-height: 1.8; margin-bottom: 24px; }
.compare-pro-img { text-align: center; }
.compare-pro-img img { max-width: 100%; height: auto; border-radius: 12px; box-shadow: 0 10px 28px rgba(0,0,0,0.12); }
.qr-cta {
    display: inline-block; background: linear-gradient(135deg, #2563eb, #3b82f6);
    color: #fff; padding: 13px 30px; border-radius: 10px; font-weight: 600; font-size: 15px;
    box-shadow: 0 6px 16px rgba(37,99,235,0.28); transition: transform .2s, box-shadow .2s;
}
.qr-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(37,99,235,0.36); }
.cta-center { text-align: center; }

.link-wheel { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.link-wheel a {
    background: #fff; border: 1px solid #e2e8f0; color: #334155;
    padding: 9px 16px; border-radius: 10px; font-size: 14px; transition: all .2s;
}
.link-wheel a:hover { border-color: #2563eb; color: #2563eb; box-shadow: 0 4px 12px rgba(37,99,235,0.12); }

.reviews-section { padding: 40px 0; }
.reviews-container { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.review-item {
    background: #fff; border-radius: 12px; padding: 18px; display: flex; gap: 14px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.05); align-items: flex-start;
}
.review-item .avatar {
    width: 42px; height: 42px; border-radius: 50%; color: #fff; font-weight: 700;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 16px;
}
.review-item .content { flex: 1; }
.review-item .name { font-weight: 600; color: #1e293b; font-size: 14px; margin-bottom: 2px; }
.review-item .stars { color: #f59e0b; font-size: 13px; margin-bottom: 6px; letter-spacing: 2px; }
.review-item .text { font-size: 13px; color: #475569; }
.review-item .hot { font-size: 16px; }

.contact-section { padding: 30px 0 50px; }
.contact-content {
    position: relative;
    background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
    border: 1px solid #e3ebf6;
    border-radius: 16px;
    padding: 44px 52px;
    box-shadow: 0 12px 34px rgba(15,23,42,0.07), 0 2px 6px rgba(15,23,42,0.04);
}
.contact-content::after {
    content: ''; position: absolute; inset: 6px; border-radius: 11px;
    border: 1px solid rgba(37,99,235,0.10); pointer-events: none;
}
.contact-cta-card {
    display: grid; grid-template-columns: minmax(0, 1fr) 236px;
    align-items: center; column-gap: 52px; text-align: left;
}
.contact-cta-card h3 {
    font-size: 24px; line-height: 1.4; font-weight: 700; color: #0f172a;
    margin: 0 0 16px; letter-spacing: .5px;
}
.cta-rule {
    width: 56px; height: 3px; border-radius: 3px; margin: 0 0 18px;
    background: linear-gradient(90deg, #2563eb 0%, #60a5fa 62%, rgba(96,165,250,0) 100%);
}
.contact-cta-card .cta-desc {
    color: #475569; font-size: 15.5px; line-height: 1.95; margin: 0; max-width: 580px;
}
.cta-desc .hl { color: #2563eb; font-weight: 700; }
.cta-qr { text-align: center; }
.qrcode-box {
    position: relative; width: 196px; height: 196px; margin: 0 auto;
    padding: 12px; background: #fff; border: 1px solid #dbe6f5; border-radius: 16px;
    box-shadow: 0 0 0 6px #f2f7ff, 0 12px 26px rgba(37,99,235,0.14);
}
.qrcode-box img { display: block; width: 100%; height: 100%; object-fit: contain; border-radius: 8px; }
.qr-scan-tip {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    margin: 22px 0 0; color: #2563eb; font-weight: 600; font-size: 14px;
    letter-spacing: 1.5px; white-space: nowrap;
}
.qr-scan-tip::before,
.qr-scan-tip::after {
    content: ''; flex: 0 0 auto; width: 26px; height: 1px;
    background: linear-gradient(90deg, rgba(37,99,235,0) 0%, rgba(37,99,235,.5) 70%, rgba(37,99,235,.78) 100%);
}
.qr-scan-tip::after {
    background: linear-gradient(90deg, rgba(37,99,235,.78) 0%, rgba(37,99,235,.5) 30%, rgba(37,99,235,0) 100%);
}
@media (max-width: 900px) {
    .contact-content { padding: 34px 28px; }
    .contact-cta-card { grid-template-columns: minmax(0, 1fr) 200px; column-gap: 32px; }
    .contact-cta-card h3 { font-size: 21px; }
    .qrcode-box { width: 172px; height: 172px; }
}
@media (max-width: 640px) {
    .contact-cta-card { grid-template-columns: 1fr; row-gap: 30px; text-align: center; }
    .contact-cta-card h3 { font-size: 20px; }
    .cta-rule { margin-left: auto; margin-right: auto; }
    .contact-cta-card .cta-desc { max-width: none; text-align: center; }
}

.footer-links { background: #fff; padding: 36px 0; border-top: 1px solid #eef2f7; }
.footer-links h3 { text-align: center; font-size: 18px; color: #1e293b; margin-bottom: 18px; }
.links-wrap { display: flex; flex-wrap: wrap; gap: 14px; justify-content: flex-start; width: fit-content; max-width: 980px; margin: 0 auto; }
.links-wrap a { color: #64748b; font-size: 14px; transition: color .2s; }
.links-wrap a:hover { color: #2563eb; }

.site-footer { background: #0f172a; color: #94a3b8; padding: 34px 20px; text-align: center; }
.footer-slogan { max-width: 860px; margin: 0 auto 12px; font-size: 14px; }
.footer-copyright { font-size: 13px; margin-bottom: 6px; }
.footer-disclaimer { font-size: 12px; color: #64748b; margin-bottom: 10px; }
.footer-icp a { color: #64748b; font-size: 12px; text-decoration: none; }

.qr-modal { position: fixed; inset: 0; z-index: 999; display: flex; align-items: center; justify-content: center; }
.qr-modal-mask { position: absolute; inset: 0; background: rgba(15,23,42,0.55); backdrop-filter: blur(3px); }
.qr-modal-content {
    position: relative; z-index: 1; background: #fff; border-radius: 20px; padding: 30px 26px;
    width: 340px; max-width: 92%; text-align: center; box-shadow: 0 30px 70px rgba(0,0,0,0.3);
    transform: scale(0.9); transition: transform .25s ease;
}
.qr-modal-content.scale-big { transform: scale(1); }
.qr-close { position: absolute; right: 14px; top: 14px; background: #f1f5f9; border: none; width: 32px; height: 32px; border-radius: 50%; cursor: pointer; color: #64748b; font-size: 16px; }
.qr-modal-content h3 { font-size: 19px; color: #1e293b; margin-bottom: 6px; }
.qr-sub { font-size: 13px; color: #94a3b8; margin-bottom: 16px; }
.qr-img-box { background: #f8fafc; border-radius: 14px; padding: 14px; display: inline-block; margin-bottom: 16px; }
.qr-img-box img { width: 180px; height: 180px; object-fit: contain; }
.qr-mini { display: inline-flex; align-items: center; gap: 6px; padding: 10px 18px; border-radius: 14px; background: #07c160; color: #fff; font-size: 14px; margin-bottom: 12px; }
.qr-mini i { font-size: 18px; }
.qr-mini strong { color: #FFE45C; font-size: 16px; }
.qr-tip { font-size: 12px; color: #94a3b8; line-height: 1.6; }

@media (max-width: 900px) {
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .compare-pro-card, .compare-pro-card.reverse { grid-template-columns: 1fr; direction: ltr; gap: 24px; padding: 28px; }
    .reviews-container { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .site-nav { display: none; }
    .menu-toggle { display: block; }
    .hero h1 { font-size: 26px; }
    .query-row { flex-direction: column; }
    .query-btn { justify-content: center; padding: 14px; }
    .feature-grid { grid-template-columns: 1fr; }
    .block-title { font-size: 22px; }
    .platform-badges { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
    .platform-badges .pf { font-size: 12px; padding: 10px 8px; }
}