/*
Theme Name: King Chemical
Theme URI: https://king.107ii.com/
Author: King Chemical
Description: Industrial & food-grade chemical catalog with search and inquiry.
Version: 0.2.0
Requires PHP: 7.4
Text Domain: king-chemical
*/

:root {
  --kc-blue: #1a3a8c;
  --kc-blue-dark: #0d2c5c;
  --kc-blue-light: #2a4faa;
  --kc-accent: #c9a657;
  --kc-bg: #ffffff;
  --kc-bg-soft: #f5f7fb;
  --kc-border: #e3e8ee;
  --kc-text: #222222;
  --kc-muted: #5a6b7d;
  --kc-radius: 4px;
  --kc-max: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--kc-text); background: var(--kc-bg); line-height: 1.65; font-size: 16px;
}
a { color: var(--kc-blue); text-decoration: none; }
a:hover { color: var(--kc-blue-dark); text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--kc-max); margin: 0 auto; padding: 0 24px; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--kc-blue); outline-offset: 2px;
}

/* 顶部细横条（电话区） */
.top-bar { background: var(--kc-blue-dark); color: rgba(255,255,255,.85); font-size: 14px; padding: 6px 0; }
.top-bar .container { display: flex; justify-content: flex-end; gap: 20px; }
.top-bar a { color: #fff; }

/* 导航：白底 */
.site-header { background: #fff; border-bottom: 1px solid var(--kc-border); position: sticky; top: 0; z-index: 100; }
.site-header .container { display: flex; align-items: center; justify-content: space-between; min-height: 80px; gap: 24px; }
.site-brand a { display: inline-flex; align-items: center; }
.site-brand img { height: 54px; width: auto; }
.site-brand-text { display: none; }
.main-nav ul { list-style: none; display: flex; gap: 28px; align-items: center; }
.main-nav a {
  color: var(--kc-text); font-size: 15px; font-weight: 500; padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { color: var(--kc-blue); border-bottom-color: var(--kc-blue); }
.main-nav .nav-cta { background: var(--kc-blue); color: #fff !important; padding: 10px 22px; border-bottom: 0; border-radius: var(--kc-radius); }
.main-nav .nav-cta:hover { background: var(--kc-blue-dark); color: #fff; }
.menu-toggle { display: none; background: none; border: 0; color: var(--kc-blue); font-size: 28px; cursor: pointer; }

/* Hero：实验室蓝调大图 */
.hero {
  background: var(--kc-blue-dark) url(images/hero-bg.svg) center/cover no-repeat;
  color: #fff; padding: 100px 0 110px; position: relative;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(13,44,92,.85) 0%, rgba(26,58,140,.55) 100%);
}
.hero .container { position: relative; z-index: 1; }
.hero .eyebrow { font-size: 14px; letter-spacing: .15em; text-transform: uppercase; color: rgba(255,255,255,.75); margin-bottom: 16px; }
.hero h1 { font-size: 44px; line-height: 1.2; font-weight: 700; margin-bottom: 36px; max-width: 880px; }
.search-hero {
  background: #fff; border-radius: var(--kc-radius); padding: 6px;
  display: flex; gap: 0; max-width: 760px;
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
.search-hero input[type="search"] {
  flex: 1; border: 0; padding: 14px 18px; font-size: 16px;
  color: var(--kc-text); background: transparent;
}
.search-hero input[type="search"]:focus { outline: none; }
.search-hero button {
  background: var(--kc-blue); color: #fff; border: 0;
  padding: 14px 28px; font-size: 16px; cursor: pointer; white-space: nowrap;
  border-radius: var(--kc-radius); font-weight: 500;
}
.search-hero button:hover { background: var(--kc-blue-dark); }

/* 区块通用 */
.section { padding: 64px 0; }
.section.soft { background: var(--kc-bg-soft); }
.section-head { margin-bottom: 36px; }
.section-head h2 { font-size: 30px; color: var(--kc-blue-dark); margin-bottom: 8px; font-weight: 700; }
.section-head .sub { color: var(--kc-muted); font-size: 16px; }

/* What We Offer：左边大标题，右边文字（参考站风格） */
.offer-block {
  display: grid; grid-template-columns: 280px 1fr; gap: 48px;
  border-top: 4px solid var(--kc-blue); padding-top: 40px;
}
.offer-block .label {
  font-size: 36px; font-weight: 700; color: var(--kc-blue-dark); line-height: 1.1;
  border-left: 4px solid var(--kc-blue); padding-left: 18px;
}
.offer-block .body { color: var(--kc-text); font-size: 16px; }
.offer-block .body p { margin-bottom: 14px; }

/* 行业卡片网格 */
.industry-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px;
}
.industry-card {
  background: #fff; border: 1px solid var(--kc-border); border-radius: var(--kc-radius);
  padding: 28px 20px; text-align: center; transition: all .2s;
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.industry-card:hover { border-color: var(--kc-blue); box-shadow: 0 8px 24px rgba(26,58,140,.12); transform: translateY(-2px); text-decoration: none; }
.industry-card .icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; }
.industry-card .icon img { width: 100%; height: 100%; }
.industry-card h3 { color: var(--kc-blue-dark); font-size: 16px; font-weight: 600; }
.industry-card .count { color: var(--kc-muted); font-size: 13px; }

/* 产品列表（参考站风格：表格 + CAS + Details + Quote） */
.product-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--kc-border); border-radius: var(--kc-radius); overflow: hidden; }
.product-table th { background: var(--kc-blue-dark); color: #fff; text-align: left; padding: 12px 16px; font-size: 14px; font-weight: 600; }
.product-table td { padding: 14px 16px; border-top: 1px solid var(--kc-border); font-size: 15px; vertical-align: middle; }
.product-table tbody tr:hover { background: var(--kc-bg-soft); }
.product-table a.product-name { color: var(--kc-blue); font-weight: 600; }
.product-table a.product-name:hover { color: var(--kc-blue-dark); text-decoration: underline; }
.product-table .cas { color: var(--kc-muted); font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 14px; }
.product-table .actions { text-align: right; white-space: nowrap; }
.product-table .actions a { margin-left: 12px; }
.product-table .quote-btn {
  background: var(--kc-blue); color: #fff !important; padding: 6px 14px;
  border-radius: var(--kc-radius); font-size: 13px;
}
.product-table .quote-btn:hover { background: var(--kc-blue-dark); }

/* 产品卡片（首页精选使用） */
.product-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px;
}
.product-card {
  background: #fff; border: 1px solid var(--kc-border); border-radius: var(--kc-radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: box-shadow .2s, transform .2s;
}
.product-card:hover { box-shadow: 0 8px 24px rgba(26,58,140,.1); transform: translateY(-2px); text-decoration: none; }
.product-card .thumb { background: var(--kc-bg-soft); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-card .thumb img { width: 100%; height: 100%; object-fit: contain; padding: 12px; }
.product-card .thumb .placeholder { color: var(--kc-muted); font-size: 13px; padding: 12px; }
.product-card .body { padding: 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card .body h3 { font-size: 16px; color: var(--kc-blue-dark); }
.product-card .body .cas { color: var(--kc-muted); font-size: 13px; }
.product-card .body .meta { color: var(--kc-muted); font-size: 13px; }

/* 筛选/搜索工具栏 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 24px; padding: 20px; background: var(--kc-bg-soft); border-radius: var(--kc-radius); border: 1px solid var(--kc-border); }
.filter-bar select, .filter-bar input[type="search"] {
  padding: 10px 14px; border: 1px solid var(--kc-border); border-radius: var(--kc-radius);
  font-size: 15px; font-family: inherit; min-width: 200px;
}
.result-count { color: var(--kc-muted); font-size: 14px; margin-bottom: 16px; }

/* 按钮 */
.btn { display: inline-block; background: var(--kc-blue); color: #fff !important; padding: 12px 24px; border-radius: var(--kc-radius); border: 0; font-size: 15px; cursor: pointer; font-weight: 500; }
.btn:hover { background: var(--kc-blue-dark); }
.btn-outline { background: transparent; color: var(--kc-blue) !important; border: 1px solid var(--kc-blue); }
.btn-outline:hover { background: var(--kc-bg-soft); }

/* 公司介绍区 */
.about-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.about-block h2 { font-size: 30px; color: var(--kc-blue-dark); margin-bottom: 16px; font-weight: 700; }
.about-block .lead { font-size: 16px; margin-bottom: 14px; }

/* 信任标识 */
.trust-bar { display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap; padding: 24px 0; }
.trust-bar .item { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--kc-muted); font-size: 13px; }
.trust-bar .item img { height: 56px; width: auto; opacity: .85; }

/* 页脚 */
.site-footer { background: var(--kc-blue-dark); color: rgba(255,255,255,.75); padding: 48px 0 16px; font-size: 14px; }
.site-footer a { color: #fff; }
.site-footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 24px; }
.site-footer .footer-brand img { height: 48px; margin-bottom: 12px; filter: brightness(0) invert(1); }
.site-footer h4 { color: #fff; margin-bottom: 10px; font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 6px; }
.site-footer .bottom { border-top: 1px solid rgba(255,255,255,.15); padding-top: 16px; font-size: 13px; text-align: center; color: rgba(255,255,255,.55); }

/* 产品详情 */
.product-single { padding: 40px 0 64px; }
.breadcrumb { color: var(--kc-muted); font-size: 13px; margin-bottom: 20px; }
.breadcrumb a { color: var(--kc-muted); }
.product-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.product-hero .thumb { background: var(--kc-bg-soft); border: 1px solid var(--kc-border); border-radius: var(--kc-radius); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.product-hero .thumb img { object-fit: contain; width: 100%; height: 100%; padding: 24px; }
.product-hero h1 { font-size: 32px; color: var(--kc-blue-dark); margin-bottom: 8px; }
.product-hero .aliases { color: var(--kc-muted); font-size: 15px; margin-bottom: 16px; }
.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
.spec-table th, .spec-table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--kc-border); font-size: 15px; vertical-align: top; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table th { color: var(--kc-blue-dark); width: 160px; font-weight: 600; background: var(--kc-bg-soft); }
.product-desc { color: var(--kc-text); margin-top: 8px; }
.inquiry-box { background: var(--kc-bg-soft); border: 1px solid var(--kc-border); border-radius: var(--kc-radius); padding: 28px; }
.inquiry-box h3 { color: var(--kc-blue-dark); margin-bottom: 16px; font-size: 20px; }

/* 表单 */
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--kc-border); border-radius: var(--kc-radius);
  font-size: 15px; font-family: inherit; color: var(--kc-text);
}
.form-note { font-size: 13px; color: var(--kc-muted); margin-top: 8px; }

/* 空状态 / 404 */
.empty-state { text-align: center; padding: 64px 20px; }
.empty-state h2 { color: var(--kc-blue-dark); margin-bottom: 12px; }
.empty-state p { color: var(--kc-muted); margin-bottom: 24px; }

/* 响应式 */
@media (max-width: 992px) {
  .industry-grid, .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .offer-block { grid-template-columns: 220px 1fr; gap: 32px; }
  .offer-block .label { font-size: 28px; }
  .product-hero { grid-template-columns: 1fr; gap: 24px; }
  .about-block { grid-template-columns: 1fr; gap: 32px; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  body { overflow-x: hidden; }
  .top-bar { font-size: 12px; padding: 5px 0; }
  .top-bar .container { justify-content: center; }
  .menu-toggle { display: block; z-index: 101; }
  .main-nav { display: none; position: absolute; top: 80px; left: 0; right: 0; background: #fff; padding: 16px 24px; box-shadow: 0 10px 20px rgba(0,0,0,.1); border-bottom: 1px solid var(--kc-border); }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 12px; align-items: stretch; }
  .main-nav a { padding: 10px 0; border-bottom: 1px solid var(--kc-border); display: block; }
  .main-nav .nav-cta { text-align: center; margin-top: 8px; border-bottom: 0; }
  .hero { padding: 56px 0 64px; }
  .hero h1 { font-size: 28px; }
  .search-hero { flex-direction: column; padding: 8px; }
  .search-hero input[type="search"] { padding: 12px 14px; }
  .search-hero button { width: 100%; padding: 14px; }
  .section { padding: 48px 0; }
  .section-head h2 { font-size: 24px; }
  .offer-block { grid-template-columns: 1fr; gap: 20px; padding-top: 24px; }
  .offer-block .label { font-size: 26px; }
  .container { padding: 0 16px; }
  .filter-bar { flex-direction: column; align-items: stretch; padding: 16px; }
  .filter-bar select, .filter-bar input[type="search"] { min-width: 0; width: 100%; }
  .product-table { font-size: 13px; }
  .product-table th, .product-table td { padding: 10px 8px; }
  .product-table .actions a { display: block; margin: 4px 0 0 0; text-align: center; }
  .site-footer .cols { grid-template-columns: 1fr; gap: 24px; }
  .product-hero h1 { font-size: 24px; }
}
@media (max-width: 480px) {
  .industry-grid, .product-grid { grid-template-columns: 1fr; }
}