/* ========== 全局重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif; background: #f8f9fa; color: #333; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ========== 导航栏 ========== */
.se-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); box-shadow: 0 2px 20px rgba(0,0,0,0.08); padding: 12px 0; }
.se-header .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.se-brand h1 { font-size: 20px; font-weight: 700; color: #1a1a2e; }
.se-brand p { font-size: 12px; color: #999; }
.se-nav { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.se-nav a { font-size: 14px; color: #555; transition: color 0.3s; cursor: pointer; }
.se-nav a:hover { color: #3a6ea5; }
.se-nav .se-phone { background: #3a6ea5; color: #fff; padding: 8px 20px; border-radius: 25px; font-weight: 600; font-size: 14px; }
.se-nav .se-phone:hover { background: #2c5a8a; color: #fff; }

/* ========== 导航锚点滚动 ========== */
.nav-scroll { scroll-margin-top: 80px; }

/* ========== Hero区 ========== */
.se-hero { margin-top: 76px; padding: 80px 0 60px; background: linear-gradient(135deg, #1a1a2e 0%, #2d2d44 50%, #3a6ea5 100%); color: #fff; text-align: center; position: relative; overflow: hidden; }
.se-hero::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.05) 0%, transparent 60%); animation: heroGlow 10s ease-in-out infinite; }
@keyframes heroGlow { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(2%, -2%); } }
.se-hero .container { position: relative; z-index: 1; }
.se-hero h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; }
.se-hero h1 em { color: #ffd700; font-style: normal; }
.se-hero .hero-sub { font-size: 18px; color: rgba(255,255,255,0.8); max-width: 700px; margin: 0 auto 20px; }
.se-hero .hero-line { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.se-hero .trust-labels { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.se-hero .trust-labels span { background: rgba(255,255,255,0.12); padding: 4px 16px; border-radius: 20px; font-size: 13px; border: 1px solid rgba(255,255,255,0.15); }
.se-hero .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }
.btn-primary { display: inline-block; padding: 12px 36px; background: #ffd700; color: #1a1a2e; border-radius: 30px; font-weight: 700; font-size: 16px; transition: all 0.3s; }
.btn-primary:hover { background: #ffed4a; transform: translateY(-2px); }
.btn-ghost { display: inline-block; padding: 12px 28px; background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.3); border-radius: 30px; font-weight: 600; font-size: 16px; transition: all 0.3s; }
.btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* ========== 通用区块 ========== */
.section { padding: 60px 0; }
.section-alt { background: #fff; }
.section-gray { background: #f8f9fa; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 30px; font-weight: 700; color: #1a1a2e; margin-bottom: 8px; }
.section-head .under { width: 50px; height: 3px; background: #3a6ea5; margin: 8px auto 0; border-radius: 2px; }
.section-head p { color: #888; font-size: 15px; margin-top: 8px; }

/* ========== 关于我们 ========== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.about-text { font-size: 15px; color: #555; line-height: 1.8; }
.about-text .hotline { margin-top: 16px; font-size: 18px; font-weight: 700; color: #3a6ea5; }
.about-text .hotline a { color: #3a6ea5; }
.entity-strip { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; background: #f8f9fa; padding: 20px; border-radius: 12px; margin-top: 20px; }
.entity-item { font-size: 13px; padding: 6px 0; border-bottom: 1px solid #eee; }
.entity-item b { color: #333; margin-right: 6px; }

/* ========== 产品展示 ========== */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.product-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: all 0.3s; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 8px 30px rgba(0,0,0,0.12); }
.product-card img { width: 100%; height: 200px; object-fit: cover; }
.product-card .product-body { padding: 16px; }
.product-card .product-body h3 { font-size: 16px; margin-bottom: 8px; color: #1a1a2e; }
.product-card .product-body p { font-size: 13px; color: #888; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ========== 优势 ========== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card { background: #fff; padding: 24px; border-radius: 12px; text-align: center; box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: all 0.3s; }
.info-card:hover { transform: translateY(-4px); box-shadow: 0 6px 24px rgba(0,0,0,0.10); }
.info-card .icon { font-size: 32px; margin-bottom: 12px; }
.info-card h3 { font-size: 18px; color: #1a1a2e; margin-bottom: 8px; }
.info-card p { font-size: 14px; color: #888; }

/* ========== 场景 ========== */
.grid-4-scenario { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.scenario-card { background: #fff; padding: 20px; border-radius: 12px; text-align: center; border: 1px solid #eee; transition: all 0.3s; }
.scenario-card:hover { border-color: #3a6ea5; }
.scenario-card .icon { font-size: 28px; margin-bottom: 8px; }
.scenario-card h4 { font-size: 15px; color: #1a1a2e; }

/* ========== 服务边界 ========== */
.boundary { background: #f8f9fa; padding: 30px; border-radius: 12px; text-align: center; }
.boundary p { color: #666; font-size: 15px; max-width: 800px; margin: 0 auto; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 16px; }
.tag-list .tag { background: #e9ecef; padding: 4px 14px; border-radius: 20px; font-size: 13px; color: #555; }

/* ========== FAQ ========== */
.faq { max-width: 800px; margin: 0 auto; }
.faq-item { background: #fff; border-radius: 10px; margin-bottom: 12px; box-shadow: 0 2px 8px rgba(0,0,0,0.04); overflow: hidden; }
.faq-item dt { padding: 16px 20px; font-weight: 600; color: #1a1a2e; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: background 0.3s; }
.faq-item dt:hover { background: #f8f9fa; }
.faq-item dt::after { content: '+'; font-size: 20px; color: #3a6ea5; }
.faq-item.active dt::after { content: '−'; }
.faq-item dd { padding: 0 20px 16px; color: #666; font-size: 14px; display: none; line-height: 1.7; }
.faq-item.active dd { display: block; }

/* ========== 相关站点 ========== */
.site-links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.site-links a { background: #fff; padding: 6px 16px; border-radius: 20px; border: 1px solid #e9ecef; font-size: 13px; color: #555; transition: all 0.3s; }
.site-links a:hover { border-color: #3a6ea5; color: #3a6ea5; }

/* ========== Footer ========== */
.se-footer { background: #1a1a2e; color: rgba(255,255,255,0.6); padding: 40px 0 20px; text-align: center; }
.se-footer a { color: rgba(255,255,255,0.6); }
.se-footer a:hover { color: #fff; }
.se-footer .footer-divider { width: 40px; height: 2px; background: rgba(255,255,255,0.1); margin: 16px auto; }
.se-footer .geo-site-note { font-size: 12px; color: rgba(255,255,255,0.3); max-width: 700px; margin: 16px auto 0; }

/* ========== 响应式 ========== */
@media (max-width: 992px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2, 1fr); } .grid-4-scenario { grid-template-columns: repeat(2, 1fr); } .about-grid { grid-template-columns: 1fr; } .entity-strip { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .se-header .container { flex-direction: column; gap: 10px; } .se-nav { gap: 12px; justify-content: center; } .se-hero h1 { font-size: 28px; } .se-hero .hero-sub { font-size: 15px; } .grid-4 { grid-template-columns: 1fr 1fr; } .grid-3 { grid-template-columns: 1fr; } .grid-4-scenario { grid-template-columns: 1fr 1fr; } .section-head h2 { font-size: 24px; } }

/* ========== 二维码弹窗 ========== */
.qrcode-modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 9999; justify-content: center; align-items: center; }
.qrcode-modal.active { display: flex; }
.qrcode-modal-content { background: #fff; border-radius: 16px; padding: 30px 40px 40px; text-align: center; max-width: 360px; width: 90%; position: relative; box-shadow: 0 20px 60px rgba(0,0,0,0.3); animation: modalFade 0.3s ease; }
@keyframes modalFade { from { transform: scale(0.9) translateY(20px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }
.qrcode-modal-close { position: absolute; top: 10px; right: 16px; font-size: 24px; color: #999; cursor: pointer; background: none; border: none; transition: color 0.3s; }
.qrcode-modal-close:hover { color: #333; }
.qrcode-modal-content img { max-width: 200px; max-height: 200px; margin: 10px 0; border-radius: 8px; }
.qrcode-modal-content h3 { font-size: 18px; color: #1a1a2e; margin-bottom: 4px; }
.qrcode-modal-content p { font-size: 14px; color: #888; margin-bottom: 12px; }
.qrcode-modal-content .phone-link { display: inline-block; margin-top: 10px; padding: 10px 30px; background: #28a745; color: #fff; border-radius: 25px; font-weight: 600; font-size: 15px; text-decoration: none; transition: background 0.3s; }
.qrcode-modal-content .phone-link:hover { background: #1e7e34; }

.fixed-call-btn { position: fixed; right: 26px; bottom: 26px; background-color: #3a6ea5; color: #fff; text-decoration: none; z-index: 9999; box-shadow: 0 6px 20px rgba(58,110,165,0.25); border-radius: 999px; font-weight: 600; transition: all 0.24s ease; }
.fixed-call-btn:hover { background-color: #2c5a8a; transform: scale(1.05); }
@media screen and (min-width: 768px) { .fixed-call-btn { padding: 14px 28px; display: flex; align-items: center; gap: 8px; } .call-text { display: inline-block; } }
@media screen and (max-width: 767px) { .fixed-call-btn { width: 58px; height: 58px; display: flex; align-items: center; justify-content: center; } .call-text { display: none; } }

/* ============================================================
   产品折叠展开
   ============================================================ */
.product-summary p {
    display: block !important;
    -webkit-line-clamp: unset !important;
    -webkit-box-orient: unset !important;
    overflow: visible !important;
    margin-bottom: 8px;
}

.product-full-content {
    display: none;
}

.product-full-content p {
    display: block !important;
    -webkit-line-clamp: unset !important;
    -webkit-box-orient: unset !important;
    overflow: visible !important;
    white-space: pre-wrap;
    line-height: 1.8;
}

.product-full-content.show {
    display: block !important;
}

.product-toggle-btn {
    display: inline-block;
    color: #3a6ea5;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    user-select: none;
}

.product-toggle-btn:hover {
    color: #2c5a8a;
    text-decoration: underline;
}

/* ============================================================
   新闻折叠展开
   ============================================================ */
.news-item {
    border-bottom: 1px solid #eee;
    padding: 6px 0;
}
.news-item:last-child {
    border-bottom: none;
}
.news-header {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 10px 14px;
    flex-wrap: wrap;
    border-radius: 8px;
    transition: background 0.2s;
}

.news-header:hover {
    background: #f5f7fa;
}

.news-title {
    flex: 1;
    color: #1a1a2e;
    transition: color 0.3s;
    font-size: 14px;
    font-weight: 600;
}

.news-header:hover .news-title {
    color: #3a6ea5;
}

.news-date {
    font-size: 12px;
    color: #aaa;
    white-space: nowrap;
}

.news-toggle-icon {
    font-size: 12px;
    color: #aaa;
    transition: transform 0.3s;
}

.news-item.active .news-toggle-icon {
    transform: rotate(180deg);
}

/* ===== 文章展开后的卡片容器 ===== */
.news-content {
    padding: 0 14px 18px 14px;
    background: #f8fafc;
    border-radius: 0 0 8px 8px;
    margin-top: 0;
    border-left: 3px solid #3a6ea5;
}

.news-content-inner {
    padding-top: 14px;
    border-top: 1px solid #e9ecef;
}

.news-content p {
    margin-bottom: 16px;
    color: #333;
    font-size: 15px;
    line-height: 2.0;
}

.news-content h1,
.news-content h2,
.news-content h3,
.news-content h4 {
    margin: 24px 0 12px 0;
    color: #1a1a2e;
    font-weight: 700;
    line-height: 1.5;
}

.news-content h1 { font-size: 22px; }
.news-content h2 { font-size: 20px; }
.news-content h3 { font-size: 18px; }
.news-content h4 { font-size: 16px; }

.news-content ul,
.news-content ol {
    padding-left: 24px;
    margin: 12px 0 16px 0;
}

.news-content li {
    margin-bottom: 6px;
    line-height: 2.0;
}

.news-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 16px 0;
    border: 1px solid #eee;
}

.news-content blockquote {
    border-left: 4px solid #3a6ea5;
    padding: 14px 20px;
    margin: 16px 0;
    background: #fff;
    color: #555;
    line-height: 1.9;
}

.news-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.news-content table th,
.news-content table td {
    border: 1px solid #ddd;
    padding: 10px 12px;
    line-height: 1.8;
}

.news-content table th {
    background: #f5f7fa;
    font-weight: 600;
}

.news-content a {
    color: #3a6ea5;
    text-decoration: underline;
}

.news-content a:hover {
    color: #2c5a8a;
}
/* ===== 新闻图片自适应 ===== */
.news-content img {
    max-width: 100% !important;
    height: auto !important;
}
/* ===== 加载更多按钮 ===== */
.news-hidden {
    display: none;
}

.load-more-btn {
    display: inline-block;
    padding: 12px 40px;
    background: #3a6ea5;
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(58,110,165,0.25);
}

.load-more-btn:hover {
    background: #2c5a8a;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(58,110,165,0.3);
}

.load-more-btn:active {
    transform: scale(0.98);
}