/* ===== CSS Variables ===== */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --primary-lighter: #eff6ff;
    --text: #1f2937;
    --text-light: #6b7280;
    --text-lighter: #9ca3af;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --bg-dark: #111827;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 8px rgba(0,0,0,.06);
    --shadow-hover: 0 8px 24px rgba(0,0,0,.12);
    --container: 1340px;
    --transition: all .25s ease;
}

/* ===== Reset ===== */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
    background:var(--bg-alt);
    color:var(--text);
    line-height:1.6;
    font-size:16px;
}
a { color:var(--primary); text-decoration:none; transition:var(--transition); }
a:hover { color:var(--primary-dark); }
ul { list-style:none; }
img { max-width:100%; height:auto; }

/* ===== Container ===== */
.container { max-width:var(--container); margin:0 auto; padding:0 20px; }

/* ===== Header ===== */
.site-header {
    background:var(--bg);
    border-bottom:1px solid var(--border);
    position:sticky;
    top:0;
    z-index:1000;
    transition:var(--transition);
}
.header-scrolled { box-shadow:0 2px 12px rgba(0,0,0,.08); }
.header-inner {
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:64px;
}
.logo { display:flex; align-items:center; gap:8px; }
.logo-icon { font-size: 1.6rem; }
.logo-text {
    font-size:1.4rem;
    font-weight:700;
    color:var(--primary);
    letter-spacing:-.5px;
}
.header-phone {
    display:flex; align-items:center; gap:6px;
    padding: 8px 16px; background: #2563eb;
    color: #fff !important; font-weight: 600; font-size: .95rem;
    border-radius: var(--radius); white-space: nowrap;
    transition: all .2s;
}
.header-phone:hover { background: #1d4ed8; text-decoration: none; color: #fff !important; }
.hp-icon { flex-shrink: 0; }
.main-nav { display:flex; gap:28px; }
.main-nav a {
    color:var(--text);
    font-size:.95rem;
    font-weight:500;
    padding:8px 0;
    border-bottom:2px solid transparent;
}
.main-nav a:hover, .main-nav a.active {
    color:var(--primary);
    border-bottom-color:var(--primary);
}
.mobile-toggle {
    display:none;
    flex-direction:column;
    gap:5px;
    background:none;
    border:none;
    cursor:pointer;
    padding:8px;
}
.mobile-toggle span {
    width:24px;
    height:2px;
    background:var(--text);
    border-radius:2px;
    transition:var(--transition);
}

/* ===== Hero ===== */
.hero {
    background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
    color:#fff;
    padding:80px 20px;
    text-align:center;
}
.hero h1 {
    font-size:2.8rem;
    font-weight:800;
    margin-bottom:12px;
    letter-spacing:-1px;
}
.hero-slogan {
    font-size:1.3rem;
    opacity:.95;
    margin-bottom:8px;
}
.hero-desc {
    font-size:1rem;
    opacity:.8;
    max-width:700px;
    margin:0 auto 28px;
    line-height:1.7;
}
.hero-actions { display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ===== Buttons ===== */
.btn {
    display:inline-block;
    padding:12px 32px;
    border-radius:var(--radius);
    font-size:.95rem;
    font-weight:600;
    cursor:pointer;
    transition:var(--transition);
    border:2px solid transparent;
}
.btn-primary { background:#fff; color:var(--primary); }
.btn-primary:hover { background:var(--primary-lighter); color:var(--primary-dark); transform:translateY(-2px); }
.btn-outline { background:transparent; color:#fff; border-color:rgba(255,255,255,.6); }
.btn-outline:hover { background:rgba(255,255,255,.1); border-color:#fff; }
.btn-sm { padding:8px 18px; font-size:.85rem; }
.btn:active { transform:translateY(0); }

/* ===== Stats Bar ===== */
.stats-bar {
    background:var(--bg);
    border-bottom:1px solid var(--border);
    padding:32px 0;
}
.stats-grid {
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    text-align:center;
}
.stat-item { display:flex; flex-direction:column; gap:4px; }
.stat-num {
    font-size:2.2rem;
    font-weight:800;
    color:var(--primary);
}
.stat-label { font-size:.9rem; color:var(--text-light); }

/* ===== Section ===== */
.section { padding:56px 0; }
.section-alt { background:var(--bg); }
.section-header {
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:32px;
}
.section-header h2 {
    font-size:1.6rem;
    font-weight:700;
}
.more-link {
    font-size:.9rem;
    font-weight:500;
}

/* ===== Industry Grid ===== */
.industry-grid {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}
.industry-grid-lg {
    grid-template-columns:repeat(3,1fr);
}
.industry-card {
    display:flex;
    flex-direction:column;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:28px;
    transition:var(--transition);
    color:var(--text);
}
.industry-card:hover {
    border-color:var(--primary);
    box-shadow:var(--shadow-hover);
    transform:translateY(-4px);
    color:var(--text);
}
.industry-icon {
    width:48px;
    height:48px;
    border-radius:var(--radius);
    background:var(--primary-light);
    margin-bottom:16px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.5rem;
}
.industry-card h3 {
    font-size:1.2rem;
    margin-bottom:8px;
}
.industry-card p {
    color:var(--text-light);
    font-size:.9rem;
    margin-bottom:12px;
    flex-grow:1;
}
.industry-keywords {
    font-size:.8rem;
    color:var(--text-lighter);
}
.industry-keywords-list {
    display:flex;
    flex-wrap:wrap;
    gap:6px;
    margin-bottom:16px;
}

/* ===== Mini Tags ===== */
.mini-tag {
    display:inline-block;
    background:var(--primary-lighter);
    color:var(--primary-dark);
    padding:3px 10px;
    border-radius:20px;
    font-size:.78rem;
    font-weight:500;
}

/* ===== Merchant Grid ===== */
.merchant-grid {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}
.merchant-card {
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:28px;
    transition:var(--transition);
    display:flex;
    flex-direction:column;
}
.merchant-card:hover {
    border-color:var(--primary);
    box-shadow:var(--shadow-hover);
    transform:translateY(-4px);
}
.merchant-card-empty {
    border-style:dashed;
    border-color:var(--border);
    align-items:center;
    text-align:center;
}
.merchant-card-empty:hover { border-color:var(--primary); }
.merchant-header {
    display:flex;
    align-items:center;
    gap:8px;
    margin-bottom:12px;
    flex-wrap:wrap;
}
.merchant-header h3 {
    font-size:1.2rem;
    font-weight:700;
}
.tag {
    display:inline-block;
    background:var(--primary-light);
    color:var(--primary-dark);
    padding:2px 10px;
    border-radius:4px;
    font-size:.78rem;
    font-weight:500;
}
.merchant-desc {
    color:var(--text-light);
    font-size:.9rem;
    margin-bottom:16px;
    flex-grow:1;
}
.merchant-tags {
    display:flex;
    flex-wrap:wrap;
    gap:6px;
    margin-bottom:16px;
}
.merchant-footer {
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding-top:16px;
    border-top:1px solid var(--border-light);
}
.merchant-areas {
    font-size:.82rem;
    color:var(--text-light);
}

/* ===== Region Cloud ===== */
.region-cloud {
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}
.region-link {
    display:inline-block;
    padding:8px 20px;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:var(--radius);
    color:var(--text);
    font-size:.9rem;
    transition:var(--transition);
}
.region-link:hover {
    background:var(--primary-lighter);
    border-color:var(--primary);
    color:var(--primary);
}

/* ===== Region List ===== */
.region-group { margin-bottom:32px; }
.region-province {
    font-size:1.2rem;
    font-weight:700;
    padding-bottom:8px;
    border-bottom:2px solid var(--primary-light);
    margin-bottom:16px;
}
.region-list {
    display:grid;
    grid-template-columns:repeat(auto-fill,minmax(150px,1fr));
    gap:8px;
}
.region-list li {
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:8px 12px;
    background:var(--bg);
    border-radius:var(--radius);
    border:1px solid var(--border-light);
}
.region-list li a { color:var(--text); font-size:.9rem; }
.region-list li a:hover { color:var(--primary); }
.region-count { font-size:.78rem; color:var(--text-lighter); }

/* ===== About Block ===== */
.logo-img { height: 36px; width: auto; display: block; }
.about-block { max-width: 100%; }
.about-block p {
    color:var(--text-light);
    margin-bottom:16px;
    line-height:1.8;
}
.about-features {
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
    margin-top:32px;
}
.feature h4 {
    color:var(--primary);
    font-size:1rem;
    margin-bottom:6px;
}
.feature p { font-size:.88rem; }

/* ===== Page Header ===== */
.page-header {
    background:var(--primary-lighter);
    padding:48px 0;
    text-align:center;
}
.page-header h1 {
    font-size:2rem;
    margin-bottom:8px;
}
.page-header p {
    color:var(--text-light);
    font-size:1rem;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    display:flex;
    gap:6px;
    align-items:center;
    font-size:.85rem;
    margin-bottom:16px;
    justify-content:center;
}
.breadcrumb .sep { color:var(--text-lighter); }
.breadcrumb .current { color:var(--text); font-weight:500; }

/* ===== Empty State ===== */
.empty-state {
    text-align:center;
    padding:60px 20px;
}
.empty-state h3 {
    font-size:1.3rem;
    margin-bottom:8px;
}
.empty-state p {
    color:var(--text-light);
    margin-bottom:20px;
}

/* ===== Footer ===== */
.site-footer {
    background:var(--bg-dark);
    color:#9ca3af;
    padding:48px 0 24px;
}
.footer-grid {
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1fr;
    gap:32px;
    margin-bottom:32px;
}
.footer-col h4 {
    color:#fff;
    font-size:1rem;
    margin-bottom:16px;
}
.footer-col p { font-size:.88rem; line-height:1.7; }
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a {
    color:#9ca3af;
    font-size:.88rem;
}
.footer-col ul li a:hover { color:#fff; }
.footer-bottom {
    border-top:1px solid #374151;
    padding-top:20px;
    text-align:center;
}
.footer-bottom p { font-size:.82rem; margin-bottom:4px; }
.disclaimer {
    color:#6b7280 !important;
    font-size:.78rem !important;
    max-width:800px;
    margin:0 auto;
}

/* ===== Icon backgrounds (SVG-like with emoji fallback) ===== */
.icon-gears::before { content:"\2699\2699"; font-size:1.2rem; }
.icon-flask::before { content:"\2697"; font-size:1.3rem; }
.icon-building::before { content:"\1F3D7"; font-size:1.2rem; }
.icon-heart-pulse::before { content:"\2695"; font-size:1.3rem; }
.icon-microchip::before { content:"\1F4BD"; font-size:1.2rem; }
.icon-leaf::before { content:"\2698"; font-size:1.3rem; }

/* ===== Responsive ===== */
@media (max-width:968px) {
    .industry-grid, .industry-grid-lg, .merchant-grid { grid-template-columns:repeat(2,1fr); }
    .footer-grid { grid-template-columns:1fr 1fr; }
    .about-features { grid-template-columns:1fr; }
    .stats-grid { grid-template-columns:repeat(2,1fr); gap:24px; }
}

@media (max-width:640px) {
    .container { padding:0 16px; }
    .hero { padding:48px 16px; }
    .hero h1 { font-size:2rem; }
    .hero-slogan { font-size:1.1rem; }
    .hero-desc { font-size:.9rem; }

    .mobile-toggle { display:flex; }
    .header-phone { display:none; }
    .main-nav {
        position:fixed;
        top:64px;
        left:0;
        right:0;
        background:var(--bg);
        flex-direction:column;
        padding:20px;
        border-bottom:1px solid var(--border);
        box-shadow:0 4px 12px rgba(0,0,0,.08);
        transform:translateY(-100%);
        opacity:0;
        pointer-events:none;
        transition:var(--transition);
    }
    .main-nav.nav-open { transform:translateY(0); opacity:1; pointer-events:auto; }
    .main-nav a { padding:12px 0; border-bottom:1px solid var(--border-light); }

    .industry-grid, .industry-grid-lg, .merchant-grid { grid-template-columns:1fr; }
    .footer-grid { grid-template-columns:1fr; }
    .stats-grid { grid-template-columns:repeat(2,1fr); }
    .section { padding:40px 0; }
    .section-header { flex-direction:column; align-items:flex-start; gap:8px; }
    .stat-num { font-size:1.8rem; }
    .page-header { padding:32px 0; }
    .page-header h1 { font-size:1.6rem; }
    .region-list { grid-template-columns:1fr 1fr; }
}

/* ===== 首页资讯预览 ===== */
.article-preview-grid {
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:20px;
}
.article-preview-card {
    display:flex;
    flex-direction:column;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:20px;
    text-decoration:none;
    color:inherit;
    transition:var(--transition);
}
.article-preview-card:hover {
    border-color:var(--primary);
    box-shadow:var(--shadow-hover);
    transform:translateY(-2px);
}
.article-preview-date {
    font-size:.8rem;
    color:var(--text-lighter);
    margin-bottom:8px;
}
.article-preview-card h3 {
    font-size:1rem;
    color:var(--text);
    margin-bottom:8px;
    line-height:1.5;
}
.article-preview-card p {
    font-size:.85rem;
    color:var(--text-light);
    line-height:1.6;
    margin-bottom:12px;
    flex:1;
}
.article-preview-keywords {
    display:flex;
    flex-wrap:wrap;
    gap:6px;
}

/* ===== 商户动态卡片 ===== */
.merchant-article-grid {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(300px, 1fr));
    gap:20px;
}
.merchant-article-card {
    display:flex;
    flex-direction:column;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:20px;
    text-decoration:none;
    color:inherit;
    transition:var(--transition);
}
.merchant-article-card:hover {
    border-color:var(--primary);
    box-shadow:var(--shadow);
    transform:translateY(-2px);
}
.merchant-article-meta {
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:10px;
}
.merchant-article-date {
    font-size:.8rem;
    color:var(--text-lighter);
}
.merchant-article-source {
    font-size:.85rem;
    color:var(--primary);
    font-weight:600;
}
.merchant-article-card h3 {
    font-size:1.05rem;
    color:var(--text);
    margin-bottom:8px;
    line-height:1.4;
}
.merchant-article-card p {
    font-size:.9rem;
    color:var(--text-light);
    line-height:1.5;
    margin-bottom:12px;
    flex:1;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.merchant-article-footer {
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding-top:12px;
    border-top:1px solid var(--border);
}
.merchant-article-industry {
    font-size:.8rem;
    color:var(--text-lighter);
}
.merchant-article-phone {
    font-size:.85rem;
    color:var(--primary);
    font-weight:600;
}

/* ===== 资讯列表页 ===== */
.article-list {
    display:flex;
    flex-direction:column;
    gap:24px;
}
.article-card {
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:var(--radius-lg);
    padding:28px;
    transition:var(--transition);
}
.article-card:hover {
    border-color:var(--primary);
    box-shadow:var(--shadow);
}
.article-meta {
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:12px;
    font-size:.85rem;
    color:var(--text-light);
}
.article-date { font-weight:500; }
.article-read { color:var(--text-lighter); }
.article-category {
    background:var(--primary-light);
    color:var(--primary-dark);
    padding:2px 10px;
    border-radius:12px;
    font-size:.8rem;
    text-decoration:none;
}
.article-title {
    font-size:1.25rem;
    margin-bottom:10px;
}
.article-title a {
    color:var(--text);
    text-decoration:none;
}
.article-title a:hover {
    color:var(--primary);
}
.article-summary {
    color:var(--text-light);
    line-height:1.7;
    margin-bottom:14px;
}
.article-keywords {
    display:flex;
    flex-wrap:wrap;
    gap:6px;
    margin-bottom:14px;
}
.article-link {
    color:var(--primary);
    text-decoration:none;
    font-weight:500;
    font-size:.9rem;
}
.article-link:hover {
    color:var(--primary-dark);
}

/* ===== 文章详情页 ===== */
.article-detail {
    padding:40px 0;
}
.article-detail-header {
    margin-bottom:32px;
    padding-bottom:24px;
    border-bottom:2px solid var(--border-light);
}
.article-detail-header .article-meta {
    margin-bottom:16px;
}
.article-detail-header h1 {
    font-size:1.8rem;
    line-height:1.5;
    margin-bottom:16px;
    color:var(--text);
}
.article-lead {
    font-size:1.1rem;
    color:var(--text-light);
    line-height:1.8;
}
.article-content {
    max-width:800px;
    line-height:1.9;
}
.article-content h2 {
    font-size:1.4rem;
    color:var(--text);
    margin:32px 0 16px;
    padding-left:14px;
    border-left:4px solid var(--primary);
}
.article-content p {
    margin-bottom:16px;
    color:var(--text);
    font-size:1rem;
}
.article-keywords-box {
    margin-top:40px;
    padding:16px;
    background:var(--primary-lighter);
    border-radius:var(--radius);
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
}
.article-footer-info {
    margin-top:24px;
    padding-top:20px;
    border-top:1px solid var(--border);
    font-size:.85rem;
    color:var(--text-light);
}
.disclaimer-text {
    color:var(--text-lighter);
    font-size:.8rem;
    margin-top:6px;
}
.related-articles {
    margin-top:48px;
}
.related-articles h3 {
    font-size:1.3rem;
    margin-bottom:20px;
    color:var(--text);
}
.related-grid {
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
    gap:16px;
}
.related-card {
    display:block;
    padding:18px;
    border:1px solid var(--border);
    border-radius:var(--radius);
    text-decoration:none;
    color:inherit;
    transition:var(--transition);
}
.related-card:hover {
    border-color:var(--primary);
    box-shadow:var(--shadow);
}
.related-date {
    font-size:.8rem;
    color:var(--text-lighter);
}
.related-card h4 {
    font-size:.95rem;
    margin:8px 0;
    color:var(--text);
    line-height:1.5;
}
.related-card p {
    font-size:.85rem;
    color:var(--text-light);
}

/* ===== 响应式补充 ===== */
@media (max-width:768px) {
    .article-preview-grid { grid-template-columns:1fr; }
    .merchant-article-grid { grid-template-columns:1fr; }
    .article-detail-header h1 { font-size:1.4rem; }
    .article-content h2 { font-size:1.2rem; }
    .article-lead { font-size:1rem; }
    .related-grid { grid-template-columns:1fr; }
}