/* ===== Wanyu Chemicals — English site =====
   主色与主站一致：#00a1ea（首页导航/按钮）、#3c92e7（产品页） */
:root {
    --primary: #00a1ea;
    --primary-dark: #0087c9;
    --primary-soft: #e9f7fe;
    --text: #222222;
    --text-muted: #666666;
    --border: #e5e5e5;
    --bg: #ffffff;
    --bg-soft: #f9fafb;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, .10);
}

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

.en-body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: none; }
img { max-width: 100%; }

/* ===== header ===== */
.en-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}
.en-header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.en-logo { display: flex; align-items: center; }
.en-logo img { height: 42px; width: auto; }
.en-nav { display: flex; align-items: center; gap: 28px; }
.en-nav a { color: var(--text); font-weight: 500; font-size: 15px; }
.en-nav a:hover { color: var(--primary); }
.en-nav-cta {
    background: var(--primary); color: #fff !important;
    padding: 9px 18px; border-radius: 999px; font-size: 14px !important;
}
.en-nav-cta:hover { background: var(--primary-dark); }

/* ===== hero ===== */
.en-hero {
    padding: 88px 0 72px;
    text-align: center;
    background: linear-gradient(180deg, var(--primary-soft) 0%, #ffffff 100%);
}
.en-hero h1 {
    font-size: 44px; line-height: 1.18; font-weight: 800; letter-spacing: -.02em;
}
.en-hero-sub { margin-top: 14px; color: var(--text-muted); font-size: 17px; }

.en-search {
    display: flex; gap: 8px;
    max-width: 620px; margin: 32px auto 0;
    background: #fff; border: 1px solid var(--border); border-radius: 14px;
    padding: 8px; box-shadow: var(--shadow-lg);
}
.en-search input {
    flex: 1; border: none; outline: none; font-size: 16px; padding: 10px 14px;
    color: var(--text); background: transparent;
}
.en-search button {
    border: none; cursor: pointer; border-radius: 10px;
    background: var(--primary); color: #fff; font-size: 15px; font-weight: 600;
    padding: 12px 28px;
}
.en-search button:hover { background: var(--primary-dark); }
.en-search-sm { max-width: 100%; margin: 0; box-shadow: var(--shadow); padding: 6px; }
.en-search-sm input { font-size: 15px; }

.en-hero-cas { margin-top: 18px; color: var(--text-muted); font-size: 14px; }
.en-hero-cas a { margin: 0 6px; font-variant-numeric: tabular-nums; }

/* ===== sections ===== */
.en-section { padding: 48px 24px; }
.en-section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 24px; }
.en-section-head h2 { font-size: 26px; font-weight: 700; letter-spacing: -.01em; }
.en-link { font-weight: 500; }

.en-page-head { padding: 40px 0 0; }
.en-page-head .en-search { margin-top: 20px; }

/* ===== categories ===== */
.en-category-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px;
}
.en-category-card {
    display: flex; align-items: center; min-height: 56px; padding: 10px 16px;
    background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text); font-weight: 500; font-size: 14.5px;
    transition: all .15s ease;
}
.en-category-card:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }

/* ===== product cards ===== */
.en-product-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.en-product-grid-3 { grid-template-columns: repeat(3, 1fr); }
.en-product-grid-4 { grid-template-columns: repeat(4, 1fr); }

.en-card {
    display: flex; flex-direction: column;
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; color: var(--text);
    transition: all .18s ease;
}
.en-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.en-card-img {
    display: flex; align-items: center; justify-content: center;
    height: 130px; padding: 10px;
    background: linear-gradient(135deg, var(--primary-soft), #f5fbfe);
    color: var(--primary);
    font-size: 40px; font-weight: 800;
}
.en-card-img img { max-height: 100%; max-width: 100%; object-fit: contain; }
.en-card-img-cas { font-size: 15px; font-weight: 600; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.en-card-body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 6px; }
.en-card-body h3 {
    font-size: 15px; font-weight: 600; line-height: 1.4;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
    min-height: 42px;
}
.en-card-cas { font-size: 13px; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.en-card-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.en-badge {
    display: inline-block; padding: 2px 10px; border-radius: 999px;
    background: var(--primary-soft); color: var(--primary-dark);
    font-size: 12px; font-weight: 500;
}

/* ===== listing ===== */
.en-listing { display: grid; grid-template-columns: 240px 1fr; gap: 32px; padding: 32px 24px 64px; }
.en-sidebar h3 { font-size: 15px; margin-bottom: 12px; }
.en-side-nav { display: flex; flex-direction: column; gap: 2px; }
.en-side-nav a {
    padding: 8px 12px; border-radius: var(--radius-sm);
    color: var(--text-muted); font-size: 14px;
}
.en-side-nav a:hover { color: var(--primary); background: var(--primary-soft); }
.en-side-nav a.active { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.en-side-cta { margin-top: 28px; padding: 18px; background: var(--bg-soft); border-radius: var(--radius); }
.en-side-cta p { font-size: 14px; font-weight: 600; margin-bottom: 10px; }

.en-listing-summary { color: var(--text-muted); font-size: 14px; margin-bottom: 16px; }

.en-empty {
    text-align: center; padding: 64px 24px;
    border: 1px dashed var(--border); border-radius: var(--radius);
}
.en-empty h3 { margin-bottom: 8px; }
.en-empty p { color: var(--text-muted); margin-bottom: 20px; }

.en-pagination {
    display: flex; align-items: center; justify-content: center; gap: 20px;
    margin-top: 36px; color: var(--text-muted); font-size: 14px;
}
.en-pagination a { font-weight: 500; }

/* ===== product detail ===== */
.en-breadcrumb { padding: 24px 0 8px; color: var(--text-muted); font-size: 13.5px; }
.en-breadcrumb a { color: var(--text-muted); }
.en-breadcrumb a:hover { color: var(--primary); }

.en-detail {
    display: grid; grid-template-columns: 360px 1fr 260px; gap: 36px;
    padding: 24px 0 32px;
}
.en-detail-img {
    display: flex; align-items: center; justify-content: center;
    height: 300px; border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--bg-soft); overflow: hidden;
    font-size: 18px; color: var(--text-muted); font-weight: 600; text-align: center; padding: 16px;
}
.en-detail-img img { max-height: 100%; object-fit: contain; }
.en-detail-thumbs { display: flex; gap: 8px; margin-top: 10px; }
.en-detail-thumbs img {
    width: 56px; height: 56px; object-fit: cover;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
}

.en-detail-info h1 { font-size: 28px; font-weight: 700; letter-spacing: -.01em; line-height: 1.25; }
.en-detail-cas { color: var(--primary); font-weight: 600; margin-top: 6px; font-variant-numeric: tabular-nums; }
.en-detail-iupac { color: var(--text-muted); font-size: 14px; margin-top: 2px; }

.en-spec-table { width: 100%; border-collapse: collapse; margin-top: 22px; font-size: 14.5px; }
.en-spec-table th, .en-spec-table td { text-align: left; padding: 10px 0; border-bottom: 1px solid var(--border); }
.en-spec-table th { color: var(--text-muted); font-weight: 500; width: 160px; }
.en-spec-table td { font-weight: 500; }

.en-detail-price-row {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    margin-top: 24px; padding: 18px 20px;
    background: var(--bg-soft); border-radius: var(--radius);
}
.en-detail-price { font-size: 22px; font-weight: 700; color: var(--primary-dark); }

.en-detail-supplier {
    align-self: start; padding: 22px;
    border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.en-detail-supplier h2 { font-size: 16px; margin-bottom: 12px; }
.en-supplier-name { font-weight: 600; line-height: 1.4; }
.en-supplier-name-link { color: var(--text); }
.en-supplier-name-link:hover { color: var(--primary); }
.en-supplier-badge { color: #067647; font-size: 13.5px; margin-top: 6px; }
.en-supplier-count { color: var(--text-muted); font-size: 13.5px; margin: 6px 0 14px; }

/* ===== buttons ===== */
.en-btn {
    display: inline-block; text-align: center; cursor: pointer;
    border-radius: 10px; font-size: 15px; font-weight: 600;
    padding: 11px 24px; border: 1px solid transparent;
    transition: all .15s ease;
}
.en-btn-primary { background: var(--primary); color: #fff; }
.en-btn-primary:hover { background: var(--primary-dark); }
.en-btn-outline { background: #fff; color: var(--primary); border-color: var(--primary); }
.en-btn-outline:hover { background: var(--primary-soft); }
.en-btn-lg { width: 100%; padding: 14px; font-size: 16px; margin-top: 8px; }

/* ===== suppliers ===== */
.en-page-head h1 { font-size: 32px; letter-spacing: -.01em; }
.en-page-sub { color: var(--text-muted); margin-top: 8px; }

.en-supplier-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.en-supplier-card {
    display: block; padding: 20px 22px;
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    color: var(--text); transition: all .18s ease;
}
.en-supplier-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.en-supplier-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.en-supplier-card-head h3 {
    font-size: 16px; font-weight: 600; line-height: 1.4;
}
.en-supplier-verified {
    color: #067647; font-size: 13px; font-weight: 600; white-space: nowrap;
}
.en-supplier-card-meta { color: var(--text-muted); font-size: 13.5px; margin-top: 6px; }
.en-supplier-card-count { font-size: 14px; font-weight: 500; margin-top: 10px; }
.en-supplier-card-link {
    display: inline-block; margin-top: 10px;
    color: var(--primary); font-size: 14px; font-weight: 500;
}

.en-supplier-head {
    display: flex; justify-content: space-between; gap: 32px;
    padding: 16px 0 8px;
}
.en-supplier-head-info { flex: 1; }
.en-supplier-head-info h1 { font-size: 28px; font-weight: 700; letter-spacing: -.01em; line-height: 1.25; }
.en-supplier-head-meta { display: flex; flex-wrap: wrap; gap: 8px; color: var(--text-muted); font-size: 14.5px; margin-top: 8px; }
.en-supplier-head-desc { color: var(--text-muted); font-size: 14.5px; margin-top: 12px; max-width: 720px; }
.en-supplier-head-cta { text-align: right; align-self: start; }
.en-supplier-head-cta .en-btn { white-space: nowrap; }
.en-supplier-more { text-align: center; margin-top: 28px; }
.en-supplier-page-link { display: inline-block; margin-top: 10px; font-size: 14px; }

/* ===== CTA banner ===== */
.en-cta { background: linear-gradient(120deg, var(--primary-dark), var(--primary)); margin-top: 32px; }
.en-cta-inner {
    display: flex; align-items: center; justify-content: space-between; gap: 24px;
    padding-top: 44px; padding-bottom: 44px;
}
.en-cta h2 { color: #fff; font-size: 24px; }
.en-cta p { color: rgba(255, 255, 255, .85); margin-top: 6px; }
.en-cta .en-btn-primary { background: #fff; color: var(--primary-dark); white-space: nowrap; }

/* ===== inquiry form ===== */
.en-inquiry-wrap { max-width: 720px; padding-top: 48px; padding-bottom: 72px; }
.en-inquiry-intro h1 { font-size: 32px; letter-spacing: -.01em; }
.en-inquiry-intro p { color: var(--text-muted); margin-top: 10px; }

.en-inquiry-success {
    margin-top: 28px; padding: 32px; text-align: center;
    background: #ecfdf3; border: 1px solid #abefc6; border-radius: var(--radius);
}
.en-inquiry-success h2 { color: #067647; margin-bottom: 6px; }

.en-form { margin-top: 32px; }
.en-form-target {
    display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
    padding: 14px 16px; margin-bottom: 20px;
    background: var(--primary-soft); border-radius: var(--radius-sm);
}
.en-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.en-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.en-field span { font-size: 14px; font-weight: 500; }
.en-field input, .en-field textarea {
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 11px 14px; font-size: 15px; font-family: inherit; color: var(--text);
    outline: none; transition: border-color .15s ease;
}
.en-field input:focus, .en-field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 161, 234, .15); }
.en-form-note { text-align: center; color: var(--text-muted); font-size: 13.5px; margin-top: 14px; }

/* ===== footer ===== */
.en-footer { border-top: 1px solid var(--border); margin-top: 64px; padding: 40px 0; }
.en-footer-brand { display: flex; align-items: center; }
.en-footer-brand img { height: 36px; width: auto; }
.en-footer-note { color: var(--text-muted); font-size: 14px; margin-top: 10px; max-width: 480px; }
.en-footer-copy { color: var(--text-muted); font-size: 13px; margin-top: 16px; }

/* ===== responsive ===== */
@media (max-width: 992px) {
    .en-detail { grid-template-columns: 1fr 1fr; }
    .en-detail-supplier { grid-column: 1 / -1; }
    .en-product-grid, .en-product-grid-4 { grid-template-columns: repeat(3, 1fr); }
    .en-product-grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .en-hero h1 { font-size: 32px; }
    .en-hero { padding: 56px 0 48px; }
    .en-listing { grid-template-columns: 1fr; }
    .en-sidebar { order: 2; }
    .en-detail { grid-template-columns: 1fr; gap: 24px; }
    .en-product-grid, .en-product-grid-3, .en-product-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .en-cta-inner { flex-direction: column; text-align: center; }
    .en-form-grid { grid-template-columns: 1fr; }
    .en-nav { gap: 16px; }
    .en-nav a:not(.en-nav-cta) { display: none; }
    .en-supplier-grid { grid-template-columns: 1fr; }
    .en-supplier-head { flex-direction: column; gap: 16px; }
    .en-supplier-head-cta { text-align: left; }
}

@media (max-width: 480px) {
    .en-product-grid, .en-product-grid-3, .en-product-grid-4 { grid-template-columns: 1fr; }
    .en-card-body h3 { min-height: 0; }
    .en-hero h1 { font-size: 27px; }
}