/* ===== 云路产业网 - 商户子站样式 v2.0 ===== */

:root {
    --primary: #1e3a5f;
    --primary-light: #2563eb;
    --primary-dark: #15293f;
    --accent: #3b82f6;
    --accent-green: #059669;
    --accent-green-light: #d1fae5;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --bg-dark: #1a2744;
    --text: #1e293b;
    --text-light: #64748b;
    --text-white: #f1f5f9;
    --border: #e2e8f0;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 2px 12px rgba(0,0,0,.06);
    --shadow-hover: 0 8px 24px rgba(0,0,0,.12);
    --max-width: 1340px;
}

* { margin:0; padding:0; box-sizing:border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text);
    line-height: 1.7;
    background: var(--bg);
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
a { color: var(--primary-light); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* ===== Navbar ===== */
.navbar {
    background: var(--primary);
    position: sticky; top: 0; z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,.1);
}
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 60px; gap: 16px;
}
.nav-logo {
    display: flex; align-items: center; gap: 10px;
    color: #fff; font-weight: 700; font-size: 1.2rem;
    flex-shrink: 0; max-width: 200px;
}
.nav-logo:hover { text-decoration: none; color: #fff; }
.nav-logo-img { max-height: 38px; width: auto; }
.nav-logo-text { letter-spacing: 1px; white-space: nowrap; }

.nav-menu {
    display: flex; list-style: none; gap: 24px; margin: 0 auto;
}
.nav-menu a {
    color: rgba(255,255,255,.85); font-size: .9rem;
    transition: color .2s; white-space: nowrap;
}
.nav-menu a:hover { color: #fff; text-decoration: none; }

.nav-phone {
    display: flex; align-items: center; gap: 6px;
    color: #fff; font-size: .95rem; font-weight: 600;
    padding: 6px 14px; background: var(--accent-green);
    border-radius: var(--radius); white-space: nowrap; flex-shrink: 0;
    transition: background .2s;
}
.nav-phone:hover { background: #047857; text-decoration: none; color: #fff; }
.nav-phone-icon { font-size: 1.1rem; }
.nav-phone-num { display: inline; }

.nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    width: 30px; height: 22px; position: relative; flex-shrink: 0;
}
.nav-toggle span {
    display: block; width: 100%; height: 3px; background: #fff;
    border-radius: 2px; position: absolute; top: 50%; transform: translateY(-50%);
    transition: .3s;
}
.nav-toggle span::before, .nav-toggle span::after {
    content: ''; position: absolute; width: 100%; height: 3px;
    background: #fff; border-radius: 2px;
}
.nav-toggle span::before { top: -9px; }
.nav-toggle span::after { top: 9px; }

/* ===== Breadcrumb ===== */
.breadcrumb { padding: 12px 0; font-size: .85rem; color: var(--text-light); }
.breadcrumb a { color: var(--text-light); }
.breadcrumb .sep { margin: 0 6px; color: #cbd5e1; }

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff; text-align: center; padding: 70px 20px;
}
.hero h1 { font-size: 2.4rem; margin-bottom: 12px; font-weight: 800; }
.hero-slogan { font-size: 1.15rem; opacity: .9; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 16px; justify-content: center; }

.city-hero { padding: 50px 20px; }
.city-hero h1 { font-size: 2rem; }

/* ===== Buttons ===== */
.btn {
    display: inline-block; padding: 12px 32px; border-radius: var(--radius);
    font-size: 1rem; font-weight: 600; cursor: pointer; transition: all .2s;
    border: none; text-align: center;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #2563eb; text-decoration: none; color: #fff; }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.6); }
.btn-outline:hover { border-color: #fff; text-decoration: none; color: #fff; }
.btn-block { width: 100%; }

/* ===== Stats Bar ===== */
.stats-bar { background: var(--bg-alt); padding: 30px 0; }
.stats-grid {
    display: flex; justify-content: space-around; flex-wrap: wrap; gap: 20px;
}
.stat-item { text-align: center; }
.stat-num { display: block; font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: .9rem; color: var(--text-light); }

/* ===== Sections ===== */
.section { padding: 60px 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
    font-size: 1.7rem; color: var(--primary); margin-bottom: 30px;
    text-align: center; font-weight: 700;
    position: relative; padding-bottom: 15px;
}
.section-title::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 50px; height: 3px; background: var(--accent); border-radius: 2px;
}
.section-desc { text-align: center; color: var(--text-light); margin-bottom: 30px; }
.sub-title { font-size: 1.2rem; color: var(--primary); margin: 25px 0 12px; }

/* ===== About ===== */
.about-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start;
}
.about-text p { margin-bottom: 14px; color: var(--text); line-height: 1.8; }
.about-images {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.about-images img {
    width: 100%; height: 160px; object-fit: cover;
    border-radius: var(--radius); box-shadow: var(--shadow);
    transition: transform .3s;
}
.about-images img:hover { transform: scale(1.03); }
.about-images img:first-child:nth-last-child(1) {
    grid-column: 1 / -1; height: 240px;
}

/* ===== Combo Grid (Advantages + Scenarios) ===== */
.combo-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}
.combo-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 22px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    min-width: 280px;
    max-width: 420px;
    flex: 1 1 280px;
    transition: all .3s;
}
.combo-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: var(--accent);
}
.combo-icon { font-size: 1.8rem; flex-shrink: 0; line-height: 1; }
.combo-text h4 { font-size: 1rem; color: var(--primary); margin-bottom: 4px; font-weight: 700; }
.combo-text p { font-size: .85rem; color: var(--text-light); line-height: 1.5; margin: 0; }

/* ===== Certifications ===== */
.cert-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}
.cert-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 22px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    min-width: 280px;
    max-width: 420px;
    flex: 1 1 280px;
    transition: all .3s;
}
.cert-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: var(--accent);
}
.cert-img {
    width: 80px; height: 80px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-alt);
    display: flex; align-items: center; justify-content: center;
}
.cert-img img { width: 100%; height: 100%; object-fit: cover; }
.cert-icon-placeholder { font-size: 2rem; }
.cert-info h4 { font-size: 1rem; color: var(--primary); margin-bottom: 4px; font-weight: 700; }
.cert-info p { font-size: .85rem; color: var(--text-light); line-height: 1.5; margin: 0; }

/* ===== Projects ===== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.project-item {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all .3s;
}
.project-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    border-color: var(--accent);
}
.project-img { width: 100%; height: 180px; overflow: hidden; background: var(--bg-alt); }
.project-img img { width: 100%; height: 100%; object-fit: cover; }
.project-body { padding: 18px; }
.project-body h4 { font-size: 1.05rem; color: var(--primary); margin-bottom: 6px; font-weight: 700; }
.project-meta {
    display: inline-block;
    font-size: .8rem; color: var(--accent);
    background: #eff6ff; padding: 2px 10px; border-radius: 20px;
    margin-bottom: 8px;
}
.project-body p { font-size: .88rem; color: var(--text-light); line-height: 1.6; }

/* ===== Gallery ===== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}
.gallery-item {
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all .3s;
}
.gallery-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.gallery-img {
    width: 100%; height: 160px;
    overflow: hidden; background: var(--bg-alt);
    display: flex; align-items: center; justify-content: center;
}
.gallery-img img { width: 100%; height: 100%; object-fit: cover; }
.gallery-placeholder { font-size: 2rem; }
.gallery-item p {
    padding: 10px 14px; font-size: .88rem; color: var(--text);
    text-align: center; margin: 0;
}

/* ===== Service Areas (Compact tag cloud) ===== */
.areas-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 8px 0;
}
.areas-tags .area-tag {
    display: inline-block;
    padding: 5px 14px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: .9rem;
    color: var(--text);
    transition: all .2s;
}
.areas-tags .area-tag:hover {
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    border-color: var(--accent);
}
.areas-tags .area-tag.city-primary {
    background: #dbeafe;
    color: var(--primary-light);
    font-weight: 600;
    border-color: #93c5fd;
}
.areas-tags .area-tag.city-primary:hover {
    background: var(--accent);
    color: #fff;
}
.areas-tags .areas-tags-hidden {
    display: none;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 8px 0 0;
}
.areas-tags .areas-tags-hidden.show {
    display: flex;
}
.areas-toggle {
    display: block;
    margin: 16px auto 0;
    padding: 10px 40px;
    font-size: .9rem;
    cursor: pointer;
    color: var(--primary);
    border-color: var(--primary);
    min-width: 220px;
}
.areas-toggle:hover {
    background: var(--primary);
    color: #fff;
}

/* ===== Advantages (legacy card style - keep for compatibility) ===== */
.advantages-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 30px;
}
.adv-card {
    background: #fff; border-radius: var(--radius); padding: 28px 20px;
    box-shadow: var(--shadow); border: 1px solid var(--border);
    text-align: center; transition: all .3s;
}
.adv-card:hover {
    box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--accent);
}
.adv-icon { font-size: 2.2rem; margin-bottom: 14px; }
.adv-title { font-size: 1.1rem; color: var(--primary); margin-bottom: 10px; font-weight: 700; }
.adv-desc { font-size: .88rem; color: var(--text-light); line-height: 1.6; }

.adv-highlight {
    background: var(--accent-green); color: #fff;
    border-radius: var(--radius); padding: 18px 28px;
    display: flex; align-items: center; justify-content: center; gap: 12px;
    font-size: 1rem; font-weight: 600; max-width: 700px; margin: 32px auto 0;
}
.adv-hl-icon { font-size: 1.3rem; }

/* ===== Products ===== */
.product-category { margin-bottom: 40px; }
.product-category h3 {
    font-size: 1.25rem; color: var(--primary); margin-bottom: 20px;
    padding-left: 12px; border-left: 4px solid var(--accent);
}
.product-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.product-card {
    display: block; background: #fff; border-radius: var(--radius);
    overflow: hidden; box-shadow: var(--shadow); transition: all .3s;
    border: 1px solid var(--border);
}
.product-card:hover {
    box-shadow: var(--shadow-hover); transform: translateY(-4px);
    text-decoration: none;
}
.product-img {
    width: 100%; height: 200px; background: var(--bg-alt);
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.product-img img { width: 100%; height: 100%; object-fit: cover; }
.product-img-placeholder {
    color: var(--text-light); font-size: 1.1rem; text-align: center;
    padding: 20px;
}
.product-img-placeholder.large { font-size: 1.5rem; height: 100%; }
.product-info { padding: 18px; }
.product-info h4 { font-size: 1.1rem; color: var(--primary); margin-bottom: 8px; }
.product-info p { font-size: .9rem; color: var(--text-light); }
.product-link {
    display: block; padding: 10px 18px; color: var(--accent);
    font-size: .9rem; font-weight: 600;
}

/* ===== Scenarios ===== */
.scenarios-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.scenario-card {
    background: #fff; border-radius: var(--radius); padding: 28px 24px;
    box-shadow: var(--shadow); border: 1px solid var(--border);
    border-top: 3px solid var(--accent-green); transition: all .3s;
}
.scenario-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.scenario-icon { font-size: 1.8rem; margin-bottom: 12px; }
.scenario-title { font-size: 1.1rem; color: var(--primary); margin-bottom: 8px; font-weight: 700; }
.scenario-desc { font-size: .88rem; color: var(--text-light); line-height: 1.6; }

/* ===== Service Areas (Compact) ===== */
.areas-compact { display: grid; gap: 12px; }
.areas-compact .province-group {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px; background: #fff; border-radius: var(--radius-sm);
    border: 1px solid var(--border); transition: all .2s;
}
.areas-compact .province-group:hover { border-color: var(--accent); }
.areas-compact .prov-name {
    min-width: 56px; font-weight: 700; color: var(--primary); font-size: .95rem;
}
.areas-compact .city-links { display: flex; flex-wrap: wrap; gap: 6px; }
.areas-compact .city-links a {
    display: inline-block; padding: 4px 10px; background: var(--bg-alt);
    border-radius: 20px; font-size: .85rem; color: var(--text); transition: all .2s;
}
.areas-compact .city-links a:hover { background: var(--accent); color: #fff; text-decoration: none; }
.areas-compact .city-links a.city-primary { background: #dbeafe; color: var(--primary-light); font-weight: 600; }

/* ===== Product Detail ===== */
.product-detail { padding: 40px 0; }
.product-detail-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start;
}
.product-detail-img {
    border-radius: var(--radius); overflow: hidden; background: var(--bg-alt);
    min-height: 350px; display: flex; align-items: center; justify-content: center;
}
.product-detail-img img { width: 100%; height: auto; }
.product-cat {
    display: inline-block; background: #e0e7ff; color: var(--primary-light);
    padding: 4px 12px; border-radius: 20px; font-size: .85rem; margin-bottom: 12px;
}
.product-detail-info h1 { font-size: 1.8rem; color: var(--primary); margin-bottom: 16px; }
.product-detail-info p { margin-bottom: 14px; }
.spec-table {
    width: 100%; border-collapse: collapse; margin: 20px 0;
}
.spec-table th, .spec-table td {
    padding: 12px 16px; border-bottom: 1px solid var(--border); text-align: left;
}
.spec-table th { background: var(--bg-alt); color: var(--text-light); font-weight: 600; width: 30%; }
.app-tags { margin: 16px 0; }
.app-tag {
    display: inline-block; background: #f0f9ff; color: var(--primary-light);
    padding: 4px 12px; border-radius: 4px; font-size: .85rem; margin: 0 4px 4px 0;
    border: 1px solid #bae6fd;
}
.product-cta { margin-top: 24px; display: flex; gap: 12px; }

.related-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.related-card {
    display: block; padding: 16px; background: #fff; border-radius: var(--radius);
    border: 1px solid var(--border); color: var(--primary); text-align: center;
    transition: all .2s;
}
.related-card:hover { box-shadow: var(--shadow); text-decoration: none; border-color: var(--accent); }

/* ===== Contact ===== */
.contact-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.contact-info h3, .contact-form h3 {
    color: var(--primary); margin-bottom: 20px; font-size: 1.3rem;
}
.contact-info p { margin-bottom: 12px; }
.contact-info a { color: var(--primary-light); font-weight: 600; }
.contact-form form { display: flex; flex-direction: column; gap: 12px; }
.contact-form input, .contact-form textarea {
    padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius);
    font-size: .95rem; font-family: inherit;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--accent);
}

/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: var(--text-white); padding: 50px 0 20px; }
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1.5fr auto; gap: 40px; margin-bottom: 30px;
}
.footer-col h4 { font-size: 1.1rem; margin-bottom: 14px; color: #fff; }
.footer-col p { font-size: .9rem; color: rgba(241,245,249,.7); line-height: 1.6; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: rgba(241,245,249,.7); font-size: .9rem; }
.footer-col a:hover { color: #fff; }

.footer-qr { text-align: center; }
.footer-qr h4 { color: #fff; font-size: 1rem; margin-bottom: 10px; }
.footer-qr img {
    width: 120px; height: 120px; object-fit: cover;
    border-radius: var(--radius-sm); margin: 0 auto 8px;
    background: #fff; padding: 4px;
}
.footer-qr p { font-size: .8rem; color: rgba(241,245,249,.5); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px;
    text-align: center;
}
.footer-bottom p { font-size: .85rem; color: rgba(241,245,249,.5); margin-bottom: 6px; }
.disclaimer { font-size: .8rem !important; color: rgba(241,245,249,.4) !important; }

/* ===== Floating Buttons ===== */
.floating-buttons {
    position: fixed; bottom: 24px; right: 24px; z-index: 999;
    display: flex; flex-direction: column; gap: 10px;
}
.float-btn-item {
    display: flex; align-items: center; gap: 8px;
    background: #fff; color: var(--text);
    padding: 10px 16px; border-radius: 50px;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
    font-size: .9rem; font-weight: 600;
    transition: all .2s; white-space: nowrap;
    border: 1px solid var(--border);
}
.float-btn-item:hover {
    background: var(--primary); color: #fff;
    text-decoration: none; transform: translateX(-4px);
}
.float-icon { font-size: 1.1rem; }

/* ===== Float Panel (Popover) ===== */
.float-panel {
    position: absolute;
    right: calc(100% + 12px);
    bottom: 0;
    width: 220px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 8px 30px rgba(0,0,0,.18);
    padding: 18px;
    z-index: 1000;
    border: 1px solid #e5e7eb;
    animation: floatPanelIn .25s ease-out;
}
@keyframes floatPanelIn {
    from { opacity: 0; transform: translateX(8px) scale(.96); }
    to   { opacity: 1; transform: translateX(0)   scale(1); }
}
.float-panel-title {
    font-size: .95rem; font-weight: 600; color: var(--primary);
    margin-bottom: 12px; padding-bottom: 8px;
    border-bottom: 1px solid #f0f0f0;
}
.float-panel-phone {
    font-size: 1.3rem; font-weight: 700; color: var(--primary);
    text-align: center; margin: 8px 0 14px;
    letter-spacing: .5px;
}
.float-panel-wechat {
    font-size: .95rem; text-align: center; margin: 8px 0;
    color: var(--text);
}
.float-panel-qr {
    display: block; width: 140px; height: 140px;
    margin: 0 auto 8px; border-radius: 8px;
    object-fit: contain; border: 1px solid #e5e7eb;
}
.float-panel-hint {
    font-size: .75rem; color: #94a3b8; text-align: center;
    margin: 8px 0 0;
}
.float-panel-actions {
    display: flex; gap: 8px; justify-content: center;
}
.float-panel-actions .btn-sm {
    padding: 6px 16px; font-size: .8rem; border-radius: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-qr { grid-column: 1 / -1; }
    .footer-qr img { margin: 0 auto; }
}

/* ===== Articles (Grid Cards) ===== */
.article-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }
.article-item { display: block; background: #fff; border: 1px solid #e5e7eb; border-radius: 12px; overflow: hidden; text-decoration: none; color: inherit; transition: box-shadow .25s, transform .25s, border-color .25s; }
.article-item:hover { box-shadow: 0 8px 25px rgba(0,0,0,.1); transform: translateY(-4px); border-color: #bfdbfe; }
.article-item-img { width: 100%; height: 160px; background: linear-gradient(135deg, #f0f7ff 0%, #dbeafe 100%); display: flex; align-items: center; justify-content: center; font-size: 3rem; color: #93c5fd; }
.article-item-body { padding: 20px 24px 24px; }
.article-item-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.article-item-tag { display: inline-block; padding: 2px 10px; background: #eff6ff; color: #2563eb; border-radius: 12px; font-size: .75rem; font-weight: 500; }
.article-item-date { color: #94a3b8; font-size: .8rem; }
.article-item h4 { color: var(--primary); font-size: 1.05rem; font-weight: 600; line-height: 1.5; margin-bottom: 8px; }
.article-item:hover h4 { color: #1d4ed8; }
.article-item p { color: #64748b; font-size: .9rem; line-height: 1.6; margin: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-detail { max-width: 100%; margin: 0 auto; }
.article-detail .btn-outline,
.article-cta .btn-outline { color: var(--primary); border-color: var(--primary); }
.article-detail .btn-outline:hover,
.article-cta .btn-outline:hover { background: var(--primary); color: #fff; }
.article-detail h1 { color: var(--primary); font-size: 1.6rem; margin-bottom: 12px; }
.article-meta { color: #94a3b8; font-size: .9rem; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid #e2e8f0; }
.article-body { color: #334155; line-height: 1.8; font-size: 1rem; }
.article-body p { margin-bottom: 16px; }
.article-cta { margin-top: 32px; padding: 24px; background: var(--bg-alt); border-radius: 8px; text-align: center; }
.article-cta p { margin-bottom: 16px; }

/* ===== Article Prev/Next Nav ===== */
.article-nav { display: flex; gap: 16px; margin-top: 28px; padding-top: 20px; border-top: 1px solid #e2e8f0; }
.article-nav-prev, .article-nav-next { flex: 1; display: flex; flex-direction: column; gap: 4px; padding: 16px 20px; border: 1px solid #e2e8f0; border-radius: 10px; text-decoration: none; background: #f8fafc; transition: border-color .2s, box-shadow .2s; min-width: 0; }
.article-nav-prev { text-align: left; }
.article-nav-next { text-align: right; }
.article-nav-prev:hover, .article-nav-next:hover { border-color: #93c5fd; box-shadow: 0 2px 8px rgba(59,130,246,.1); }
.article-nav-label { font-size: .78rem; color: #94a3b8; }
.article-nav-title { font-size: .9rem; color: #1e3a5f; font-weight: 500; line-height: 1.4; }
.article-nav-prev:hover .article-nav-title, .article-nav-next:hover .article-nav-title { color: #2563eb; }
.article-nav-none { visibility: hidden; flex: 1; }

/* ===== FAQ (Accordion Style) ===== */
.faq-wrap { display: flex; flex-direction: column; gap: 12px; }
.faq-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 10px; overflow: hidden; transition: box-shadow .2s; }
.faq-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.06); }
.faq-question { display: flex; align-items: center; gap: 12px; width: 100%; padding: 16px 20px; border: none; background: none; cursor: pointer; text-align: left; font-size: inherit; font-family: inherit; }
.faq-q-icon { flex-shrink: 0; width: 28px; height: 28px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .75rem; font-weight: 700; }
.faq-q-text { flex: 1; color: #1e293b; font-size: 1rem; font-weight: 600; line-height: 1.4; }
.faq-toggle-icon { flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: #f1f5f9; color: #64748b; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; font-weight: 500; transition: all .2s; }
.faq-question[aria-expanded="true"] .faq-toggle-icon { background: var(--primary); color: #fff; transform: rotate(0); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer.open { max-height: 500px; }
.faq-answer-inner { padding: 0 20px 16px 60px; color: #475569; line-height: 1.7; font-size: .95rem; }
.faq-more { text-align: center; margin-top: 24px; }
.faq-more .btn-outline { color: var(--primary); border-color: var(--primary); min-width: 220px; padding: 10px 40px; font-size: .9rem; }
.faq-more .btn-outline:hover { background: var(--primary); color: #fff; }

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .nav-toggle { display: block; }
    .nav-inner.open .nav-menu {
        display: flex; flex-direction: column; position: absolute;
        top: 60px; left: 0; right: 0; background: var(--primary);
        padding: 20px; gap: 16px; z-index: 99;
    }
    .nav-phone { display: none; }
    .hero h1 { font-size: 1.8rem; }
    .hero-cta { flex-direction: column; }
    .stats-grid { gap: 16px; }
    .stat-num { font-size: 1.5rem; }
    .about-grid { grid-template-columns: 1fr; }
    .about-images { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .scenarios-grid { grid-template-columns: 1fr; }
    .product-detail-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .province-group { flex-direction: column; gap: 8px; align-items: flex-start; }
    .combo-item { flex: 1 1 100%; min-width: auto; }
    .areas-tags { gap: 8px; }
    .areas-tags .area-tag { padding: 4px 10px; font-size: .8rem; }
    .cert-item { flex: 1 1 100%; min-width: auto; }
    .project-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 1.4rem; }
    .section { padding: 40px 0; }
    .floating-buttons { bottom: 16px; right: 16px; }
    .float-label { display: none; }
    .float-btn-item { padding: 12px; border-radius: 50%; }
    .float-panel {
        right: auto; left: 50%; bottom: calc(100% + 12px);
        transform: translateX(-50%);
        width: 200px; padding: 14px;
        animation: floatPanelInMobile .25s ease-out;
    }
    @keyframes floatPanelInMobile {
        from { opacity: 0; transform: translateX(-50%) translateY(8px) scale(.96); }
        to   { opacity: 1; transform: translateX(-50%) translateY(0)   scale(1); }
    }
    .float-panel-phone { font-size: 1.1rem; }
    .article-list { grid-template-columns: 1fr; gap: 14px; }
    .article-item-img { height: 120px; font-size: 2rem; }
    .article-item-body { padding: 14px 16px 18px; }
    .article-item h4 { font-size: .95rem; }
    .article-item p { -webkit-line-clamp: 1; }
    .article-detail h1 { font-size: 1.3rem; }
    .faq-answer-inner { padding: 0 16px 14px 52px; }
    .faq-q-text { font-size: .9rem; }
    .article-nav { flex-direction: column; }
    .article-nav-prev, .article-nav-next { text-align: left; }
}