/* ============== 全局 ============== */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif; line-height: 1.6; color: #333; background: #fff; }
img { max-width: 100%; height: auto; display: block; }
a { color: #1a3a6e; text-decoration: none; transition: all .2s; }
a:hover { color: #ff6b35; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }

/* ============== 顶部条 ============== */
.top-bar { background: #0f2547; color: #fff; padding: 8px 0; font-size: 13px; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.top-bar-info span { margin-right: 20px; }
.top-bar-lang a { color: #fff; margin-left: 10px; opacity: .8; }
.top-bar-lang a:hover { opacity: 1; color: #ff6b35; }

/* ============== 主导航 ============== */
.main-nav { background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,.08); position: sticky; top: 0; z-index: 100; }
.main-nav .container { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; }
.logo { font-size: 22px; font-weight: 800; color: #1a3a6e; }
.logo span { color: #ff6b35; }
.nav-menu { display: flex; list-style: none; gap: 28px; align-items: center; }
.nav-menu a { color: #2c3e50; font-weight: 600; font-size: 15px; padding: 8px 0; }
.nav-menu a:hover { color: #ff6b35; }
.nav-cta { background: #ff6b35; color: #fff !important; padding: 10px 22px !important; border-radius: 4px; }
.nav-cta:hover { background: #e55a2b; color: #fff !important; }
.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0; width: 40px; height: 40px; background: #1a3a6e; border-radius: 4px; align-items: center; justify-content: center; }
.mobile-toggle .hamburger { display: block; width: 22px; height: 2px; background: #fff; position: relative; }
.mobile-toggle .hamburger:before, .mobile-toggle .hamburger:after { content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: #fff; }
.mobile-toggle .hamburger:before { top: -7px; }
.mobile-toggle .hamburger:after { top: 7px; }

/* ============== 通用 section ============== */
section { padding: 70px 0; }
.ch-section-header { text-align: center; margin-bottom: 50px; }
.ch-section-header h2 { font-size: 36px; color: #1a3a6e; font-weight: 800; margin-bottom: 12px; }
.ch-section-header p { color: #666; font-size: 16px; max-width: 700px; margin: 0 auto; }
.ch-eyebrow { display: inline-block; color: #ff6b35; font-size: 13px; font-weight: 700; letter-spacing: 2px; margin-bottom: 12px; text-transform: uppercase; }

/* ============== 按钮 ============== */
.ch-btn-primary { display: inline-flex; align-items: center; gap: 8px; background: #ff6b35; color: #fff !important; padding: 12px 24px; font-size: 14px; font-weight: 600; border-radius: 6px; transition: all .25s; border: none; cursor: pointer; }
.ch-btn-primary:hover { background: #e55a2b; color: #fff !important; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(255,107,53,.3); }
.ch-btn-ghost { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: #1a3a6e !important; padding: 12px 22px; font-size: 14px; font-weight: 600; border: 1.5px solid #dde2e7; border-radius: 6px; transition: all .25s; }
.ch-btn-ghost:hover { border-color: #1a3a6e; color: #1a3a6e !important; background: #f8f9fa; }
.ch-btn-outline { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: #1a3a6e !important; padding: 12px 24px; font-size: 14px; font-weight: 600; border: 1.5px solid #1a3a6e; border-radius: 6px; }
.ch-btn-outline:hover { background: #1a3a6e; color: #fff !important; }
.ch-btn-lg { padding: 16px 32px; font-size: 16px; }

/* ============== Breadcrumb ============== */
.ch-breadcrumb { padding: 18px 0; font-size: 13px; color: #999; background: #f8f9fa; }
.ch-breadcrumb a { color: #1a3a6e; }
.ch-breadcrumb a:hover { color: #ff6b35; }
.ch-breadcrumb span { color: #666; }

/* ============== Products Hero ============== */
.ch-products-hero, .ch-cat-hero { background: linear-gradient(135deg, #0f2547 0%, #1a3a6e 100%); color: #fff; padding: 80px 0 70px; position: relative; background-size: cover; background-position: center; }
.ch-products-hero h1, .ch-cat-hero h1 { font-size: 48px; font-weight: 800; margin-bottom: 18px; line-height: 1.2; }
.ch-products-sub, .ch-cat-sub { font-size: 18px; max-width: 800px; opacity: .92; line-height: 1.6; margin-bottom: 35px; }
.ch-products-stats, .ch-cat-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; max-width: 800px; }
.ch-products-stats > div, .ch-cat-stats > div { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15); padding: 16px 20px; border-radius: 8px; backdrop-filter: blur(8px); }
.ch-products-stats strong, .ch-cat-stats strong { display: block; font-size: 26px; color: #ff6b35; font-weight: 800; }
.ch-products-stats span, .ch-cat-stats span { font-size: 13px; opacity: .85; }

/* ============== Why Strip (首页 4 列) ============== */
.ch-why-strip { background: #f8f9fa; padding: 50px 0; }
.ch-why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.ch-why-item { text-align: center; }
.ch-why-icon { display: inline-flex; align-items: center; justify-content: center; width: 60px; height: 60px; background: linear-gradient(135deg, #1a3a6e, #2c5282); color: #fff; border-radius: 50%; font-size: 28px; margin-bottom: 12px; }
.ch-why-item strong { display: block; color: #1a3a6e; font-size: 16px; margin-bottom: 6px; }
.ch-why-item p { color: #666; font-size: 13px; }

/* ============== Category Filter Chips ============== */
.ch-cat-filter { background: #fff; border-bottom: 1px solid #e8ecef; padding: 25px 0; position: sticky; top: 65px; z-index: 50; }
.ch-cat-chips { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.ch-chip { display: inline-block; padding: 9px 20px; background: #f8f9fa; color: #2c3e50 !important; border-radius: 25px; font-size: 14px; font-weight: 500; transition: all .2s; border: 1px solid transparent; }
.ch-chip:hover { background: #e8ecef; color: #1a3a6e !important; }
.ch-chip.active { background: #1a3a6e; color: #fff !important; }

/* ============== Category Tiles (Products Main Page) ============== */
.ch-prod-categories { background: #fff; padding: 80px 0; }
.ch-cat-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.ch-cat-tile { background: #fff; border: 1px solid #e8ecef; border-radius: 12px; overflow: hidden; transition: all .3s; display: block; }
.ch-cat-tile:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(26,58,110,.18); border-color: #1a3a6e; }
.ch-cat-tile-img { height: 200px; background: linear-gradient(135deg, #1a3a6e, #2c5282); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 70px; overflow: hidden; }
.ch-cat-tile-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.ch-cat-tile:hover .ch-cat-tile-img img { transform: scale(1.08); }
.ch-cat-tile-body { padding: 22px 24px; }
.ch-cat-tile-body h3 { color: #1a3a6e; font-size: 18px; margin-bottom: 8px; font-weight: 700; }
.ch-cat-tile-body p { color: #666; font-size: 13px; line-height: 1.5; margin-bottom: 12px; }
.ch-cat-tile-link { display: inline-block; color: #ff6b35; font-weight: 600; font-size: 14px; }

/* ============== Products Grid + Cards ============== */
.ch-cat-grid-wrap { background: #f8f9fa; padding: 60px 0; }
.ch-cat-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.ch-cat-count { color: #666; font-size: 14px; }
.ch-cat-pagination { margin-top: 40px; text-align: center; }
.ch-cat-pagination .page-numbers { display: inline-block; padding: 8px 14px; background: #fff; border: 1px solid #e8ecef; border-radius: 4px; margin: 0 3px; color: #1a3a6e; font-weight: 500; }
.ch-cat-pagination .page-numbers.current { background: #1a3a6e; color: #fff; border-color: #1a3a6e; }
.ch-no-products { background: #fff; padding: 60px 30px; text-align: center; border-radius: 8px; }

.ch-product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 28px; }

.ch-product-card { background: #fff; border: 1px solid #e8ecef; border-radius: 12px; overflow: hidden; transition: all .3s; display: flex; flex-direction: column; }
.ch-product-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(26,58,110,.15); border-color: #1a3a6e; }
.ch-product-img { display: block; height: 220px; background: #f8f9fa; position: relative; overflow: hidden; }
.ch-product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.ch-product-card:hover .ch-product-img img { transform: scale(1.06); }
.ch-no-img { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; font-size: 70px; color: #1a3a6e; background: linear-gradient(135deg, #e6ebf2, #f8f9fa); }
.ch-product-cat { position: absolute; top: 12px; left: 12px; background: rgba(15,37,71,.92); color: #fff; padding: 5px 12px; border-radius: 20px; font-size: 11px; font-weight: 600; letter-spacing: .5px; backdrop-filter: blur(8px); }

.ch-product-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.ch-product-title { font-size: 17px; color: #1a3a6e; margin-bottom: 10px; line-height: 1.4; font-weight: 700; }
.ch-product-title a { color: inherit; }
.ch-product-title a:hover { color: #ff6b35; }
.ch-product-excerpt { color: #666; font-size: 13px; line-height: 1.55; margin-bottom: 14px; flex-shrink: 0; }
.ch-product-specs { list-style: none; padding: 12px 0; margin: 0 0 14px; border-top: 1px solid #f0f3f6; border-bottom: 1px solid #f0f3f6; }
.ch-product-specs li { display: flex; justify-content: space-between; padding: 4px 0; font-size: 13px; }
.ch-product-specs li span { color: #888; }
.ch-product-specs li strong { color: #1a3a6e; font-weight: 600; }
.ch-product-meta { display: flex; gap: 16px; font-size: 12px; color: #888; margin-bottom: 16px; flex-shrink: 0; }
.ch-meta-item strong { color: #1a3a6e; font-weight: 600; }
.ch-product-cta { display: flex; gap: 8px; margin-top: auto; }
.ch-product-cta .ch-btn-ghost, .ch-product-cta .ch-btn-primary { flex: 1; justify-content: center; padding: 10px 12px; font-size: 13px; }

/* ============== Trust Strip ============== */
.ch-trust-strip { background: linear-gradient(135deg, #1a3a6e, #0f2547); color: #fff; padding: 70px 0; }
.ch-trust-strip .ch-eyebrow { color: #ff6b35; }
.ch-trust-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.ch-trust-text h2 { font-size: 36px; color: #fff; margin-bottom: 14px; font-weight: 800; }
.ch-trust-text p { color: rgba(255,255,255,.85); font-size: 16px; }
.ch-trust-certs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ch-cert { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2); padding: 16px; text-align: center; border-radius: 8px; font-weight: 700; font-size: 14px; backdrop-filter: blur(8px); }

/* ============== Inquiry Section ============== */
.ch-inquiry-section { background: #fff; padding: 80px 0; }
.ch-inq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.ch-inq-eyebrow { display: inline-block; color: #ff6b35; font-size: 13px; font-weight: 700; letter-spacing: 2px; margin-bottom: 12px; }
.ch-inq-info h2 { font-size: 36px; color: #1a3a6e; margin-bottom: 18px; font-weight: 800; line-height: 1.25; }
.ch-inq-info p { color: #555; margin-bottom: 22px; font-size: 15px; line-height: 1.7; }
.ch-inq-list { list-style: none; padding: 0; margin-bottom: 28px; }
.ch-inq-list li { padding: 7px 0 7px 28px; color: #444; position: relative; font-size: 14px; }
.ch-inq-list li:before { content: "✓"; position: absolute; left: 0; top: 7px; color: #ff6b35; font-weight: 800; font-size: 16px; }
.ch-inq-contact { background: #f8f9fa; padding: 16px 20px; border-radius: 8px; border-left: 4px solid #ff6b35; }
.ch-inq-contact p { margin: 0; color: #1a3a6e; }
.ch-inq-form { background: linear-gradient(135deg, #f8f9fa, #fff); padding: 40px; border-radius: 12px; border: 1px solid #e8ecef; box-shadow: 0 8px 32px rgba(0,0,0,.06); }
.ch-inq-form input, .ch-inq-form textarea, .ch-inq-form select { width: 100%; padding: 13px 16px; margin-bottom: 14px; border: 1px solid #dde2e7; border-radius: 6px; font-size: 14px; font-family: inherit; transition: border .2s; }
.ch-inq-form input:focus, .ch-inq-form textarea:focus, .ch-inq-form select:focus { outline: none; border-color: #1a3a6e; box-shadow: 0 0 0 3px rgba(26,58,110,.1); }
.ch-inq-form textarea { min-height: 110px; resize: vertical; }
.ch-inq-form button[type=submit], .ch-inq-form input[type=submit] { width: 100%; background: #ff6b35; color: #fff; border: none; padding: 15px 30px; font-size: 16px; font-weight: 600; border-radius: 6px; cursor: pointer; transition: all .2s; }
.ch-inq-form button[type=submit]:hover, .ch-inq-form input[type=submit]:hover { background: #e55a2b; transform: translateY(-1px); }
.wpcf7-not-valid { border-color: #e74c3c !important; }
.wpcf7-response-output { margin-top: 12px !important; padding: 12px !important; border-radius: 6px !important; border: none !important; }
.wpcf7-mail-sent-ok { background: #d4edda; color: #155724; border-left: 4px solid #28a745 !important; }
.wpcf7-validation-errors { background: #f8d7da; color: #721c24; border-left: 4px solid #dc3545 !important; }

/* ============== Single Product Page ============== */
.ch-single-product { background: #f8f9fa; }
.ch-single-product .container { padding-top: 30px; padding-bottom: 60px; }
.ch-sp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; background: #fff; padding: 40px; border-radius: 12px; margin-top: 20px; }
.ch-sp-gallery img { width: 100%; border-radius: 8px; }
.ch-sp-noimg { height: 400px; display: flex; align-items: center; justify-content: center; font-size: 100px; color: #1a3a6e; background: linear-gradient(135deg, #e6ebf2, #f8f9fa); border-radius: 8px; }
.ch-sp-trust { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }
.ch-sp-trust span { background: #e8f4ff; color: #1a3a6e; padding: 6px 12px; border-radius: 16px; font-size: 12px; font-weight: 600; }
.ch-sp-cat { display: inline-block; color: #ff6b35; font-size: 13px; font-weight: 700; letter-spacing: 1.5px; margin-bottom: 10px; text-transform: uppercase; }
.ch-sp-info h1 { font-size: 32px; color: #1a3a6e; margin-bottom: 14px; line-height: 1.25; font-weight: 800; }
.ch-sp-rating { color: #f5a623; margin-bottom: 22px; font-size: 14px; }
.ch-sp-rating span { color: #888; margin-left: 6px; }
.ch-sp-specs { list-style: none; padding: 18px 22px; background: #f8f9fa; border-radius: 8px; margin-bottom: 24px; }
.ch-sp-specs li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid #e8ecef; font-size: 14px; }
.ch-sp-specs li:last-child { border-bottom: none; }
.ch-sp-specs li span { color: #666; }
.ch-sp-specs li strong { color: #1a3a6e; font-weight: 600; }
.ch-sp-keypoints { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 24px; }
.ch-sp-keypoint { display: flex; gap: 12px; align-items: flex-start; }
.ch-kp-icon { font-size: 28px; flex-shrink: 0; }
.ch-sp-keypoint strong { display: block; color: #1a3a6e; font-size: 14px; margin-bottom: 4px; }
.ch-sp-keypoint p { color: #888; font-size: 12px; line-height: 1.4; }
.ch-sp-actions { display: flex; gap: 12px; margin-bottom: 22px; flex-wrap: wrap; }
.ch-sp-meta { display: flex; gap: 20px; padding: 14px 18px; background: #fff8f4; border-radius: 8px; border-left: 4px solid #ff6b35; flex-wrap: wrap; font-size: 13px; }
.ch-sp-meta div { color: #555; }
.ch-sp-meta strong { color: #1a3a6e; }
.ch-sp-tabs { background: #fff; padding: 40px; border-radius: 12px; margin-top: 30px; }
.ch-sp-tab-content h2 { color: #1a3a6e; font-size: 24px; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 2px solid #f0f3f6; }
.ch-sp-description { color: #444; line-height: 1.8; font-size: 15px; }
.ch-sp-related { margin-top: 40px; }
.ch-sp-related h2 { color: #1a3a6e; font-size: 24px; margin-bottom: 24px; font-weight: 800; }

/* ============== Inquiry Card Buttons (loop) ============== */
.ch-inquiry-btn { display: inline-flex; align-items: center; gap: 6px; background: #1a3a6e; color: #fff !important; padding: 8px 14px; border-radius: 4px; font-size: 13px; font-weight: 600; transition: all .2s; }
.ch-inquiry-btn:hover { background: #ff6b35; color: #fff !important; }
.ch-inquiry-card { margin-top: auto; }
.ch-call-btn { display: inline-flex; align-items: center; gap: 6px; background: transparent; color: #1a3a6e !important; padding: 8px 14px; border: 1.5px solid #1a3a6e; border-radius: 4px; font-size: 13px; font-weight: 600; }

/* ============== Hide WC defaults ============== */
.woocommerce-notices-wrapper, .woocommerce-result-count, .woocommerce-ordering, .woocommerce-breadcrumb, .woocommerce-pagination { display: none !important; }

/* ============== Footer ============== */
footer { background: #0a1a36; color: #fff; padding: 50px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
.footer-col h4 { color: #ff6b35; font-size: 16px; margin-bottom: 15px; }
.footer-col p, .footer-col a { color: rgba(255,255,255,.7); font-size: 14px; line-height: 1.8; }
.footer-col a:hover { color: #ff6b35; }
.footer-col ul { list-style: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; text-align: center; color: rgba(255,255,255,.5); font-size: 13px; }

/* ============== 响应式 ============== */
@media (max-width: 1024px) {
    .ch-products-hero h1, .ch-cat-hero h1 { font-size: 36px; }
    .ch-cat-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .ch-sp-grid { grid-template-columns: 1fr; }
    .ch-trust-inner { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .top-bar { font-size: 12px; padding: 6px 0; }
    .top-bar .container { flex-direction: column; align-items: flex-start; }
    .top-bar-info span { display: block; margin-bottom: 2px; margin-right: 0; }
    .top-bar-lang { font-size: 11px; margin-top: 4px; }
    .top-bar-lang a { margin-left: 5px; }

    .main-nav .container { padding: 12px 20px; }
    .logo { font-size: 18px; }
    .mobile-toggle { display: flex; }
    .nav-menu { display: none; position: fixed; top: 60px; left: 0; right: 0; bottom: 0; background: #fff; flex-direction: column; padding: 30px 20px; box-shadow: 0 4px 12px rgba(0,0,0,.1); z-index: 99; overflow-y: auto; gap: 0; }
    .nav-menu.active { display: flex; }
    .nav-menu li { width: 100%; border-bottom: 1px solid #eee; }
    .nav-menu li:last-child { border-bottom: none; }
    .nav-menu a { display: block; padding: 15px 0; width: 100%; font-size: 16px; }
    .nav-menu .nav-cta { margin-top: 20px; text-align: center; }

    .ch-products-hero, .ch-cat-hero { padding: 50px 0 40px; }
    .ch-products-hero h1, .ch-cat-hero h1 { font-size: 28px; }
    .ch-products-sub, .ch-cat-sub { font-size: 15px; }
    .ch-products-stats, .ch-cat-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .ch-products-stats strong, .ch-cat-stats strong { font-size: 20px; }

    section { padding: 50px 0; }
    .ch-section-header h2 { font-size: 26px; }

    .ch-why-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .ch-cat-grid-4 { grid-template-columns: 1fr; }
    .ch-trust-certs { grid-template-columns: repeat(2, 1fr); }
    .ch-trust-text h2 { font-size: 26px; }

    .ch-product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .ch-product-img { height: 170px; }
    .ch-product-title { font-size: 15px; }
    .ch-product-cta { flex-direction: column; }
    .ch-product-cta .ch-btn-ghost, .ch-product-cta .ch-btn-primary { width: 100%; }

    .ch-inq-grid { grid-template-columns: 1fr; gap: 30px; }
    .ch-inq-info h2 { font-size: 26px; }
    .ch-inq-form { padding: 25px 20px; }

    .ch-sp-grid { grid-template-columns: 1fr; padding: 20px; gap: 25px; }
    .ch-sp-info h1 { font-size: 24px; }
    .ch-sp-keypoints { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 480px) {
    .ch-product-grid { grid-template-columns: 1fr; }
    .container { padding: 0 15px; }
}