/*
Theme Name: ZFA Industrial Theme
Theme URI: https://www.example.com/zfa-theme
Author: Your Name
Author URI: https://www.example.com
Description: A modern, professional, and international B2B theme for industrial and valve manufacturing companies. Built from scratch without page builders.
Version: 1.0.0
Text Domain: zfa-theme
Tags: custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

:root {
  --color-primary: #1f3a66;
  --color-primary-dark: #162f57;
  --color-primary-light: #2f4f7f;
  --color-accent: #00bcd4;
  --color-white: #ffffff;
  --color-gray: #333333;
}

html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: 'SourceSansPro', Arial, Helvetica, sans-serif;
  color: var(--color-gray);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background-color: var(--color-white);
}

.container {
  max-width: 1680px;
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
  box-sizing: border-box;
}

/* 基础响应式图片 */
img {
  max-width: 100%;
  height: auto;
}

/* 清除浮动与基础样式省略，后续可根据设计图补充 */

.zfa-product {
  padding: 40px 0 70px;
}

.zfa-product__hero {
  padding: 30px 0;
}

.zfa-product__hero-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.zfa-product__gallery-main {
  background: #fff;
  border: 1px solid #e6e9ef;
  border-radius: 10px;
  overflow: hidden;
  width: 100%;
  max-width: 520px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: zoom-in;
  margin-left: auto;
  margin-right: auto;
}

.zfa-product__img {
  display: block;
  width: 100%;
  height: 100% !important;
  object-fit: contain;
  transform-origin: var(--zfa-zoom-x, 50%) var(--zfa-zoom-y, 50%);
  transition: transform 0.15s ease;
}

.zfa-product__gallery-main.is-zoom .zfa-product__img {
  transform: scale(1.8);
  cursor: zoom-out;
}

.zfa-product__thumbs-wrap {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 36px 1fr 36px;
  gap: 10px;
  align-items: center;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.zfa-product__thumbs-nav {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid #e6e9ef;
  background: #fff;
  color: #344054;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.zfa-product__thumbs-nav:hover {
  border-color: #cfd4dc;
  color: #101828;
}

.zfa-product__thumbs-nav:disabled {
  opacity: 0.35;
  cursor: default;
}

.zfa-product__gallery-thumbs {
  margin: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 4px 2px 8px;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

.zfa-product__thumb-btn {
  appearance: none;
  border: 2px solid transparent;
  background: transparent;
  padding: 0;
  border-radius: 10px;
  flex: 0 0 auto;
  cursor: pointer;
}

.zfa-product__thumb-btn.is-active {
  border-color: var(--color-accent);
}

.zfa-product__thumb-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.18);
}

.zfa-product__thumb {
  width: 64px;
  height: 64px;
  display: block;
  border: 1px solid #e6e9ef;
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
}

.zfa-product__title {
  margin: 0 0 10px;
  line-height: 1.25;
  color: var(--color-primary);
  font-size: 34px;
}

.zfa-product__excerpt p {
  margin: 0 0 14px;
  color: #344054;
}

.zfa-product__summary {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  border: 1px solid #e6e9ef;
  border-radius: 12px;
  background: #fff;
}

.zfa-product__summary-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-top: 1px solid #eef2f7;
}

.zfa-product__summary-item:first-child {
  border-top: 0;
}

.zfa-product__summary-label {
  color: #101828;
  font-weight: 600;
}

.zfa-product__summary-value {
  color: #344054;
  text-align: right;
}

.zfa-product__cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.zfa-product__section {
  padding: 26px 0;
}

.zfa-product__h2 {
  margin: 0 0 14px;
  font-size: 22px;
  color: var(--color-primary);
}

.zfa-product__empty {
  margin: 0;
  color: #475467;
}

.zfa-product__spec-note {
  margin: 12px 0 0;
  padding: 10px 12px;
  border-left: 4px solid var(--color-accent);
  background: #f0fbfd;
  color: #0b4f5d;
  border-radius: 10px;
}

.zfa-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid #e6e9ef;
  border-radius: 12px;
  overflow: hidden;
}

.zfa-table th,
.zfa-table td {
  padding: 12px 14px;
  border-top: 1px solid #eef2f7;
  vertical-align: top;
}

.zfa-table tr:first-child th,
.zfa-table tr:first-child td {
  border-top: 0;
}

.zfa-table th {
  width: 32%;
  text-align: left;
  color: #101828;
  font-weight: 600;
  background: #f8fafc;
}

.zfa-table td {
  color: #344054;
}

.zfa-product__std-text {
  margin: 0 0 14px;
  color: #344054;
}

.zfa-product__download {
  margin-top: 14px;
}

.zfa-product__custom-note {
  margin-top: 14px;
  padding: 12px 14px;
  border: 1px dashed #d0d5dd;
  border-radius: 12px;
  background: #fff;
  color: #344054;
}

.zfa-product__images {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.zfa-product__images-item {
  border: 1px solid #e6e9ef;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zfa-product__images-img {
  /* width: 100%; */
  height: 100% !important;
  display: block;
  object-fit: contain;
}

.zfa-product__advantages {
  margin: 0;
  padding-left: 18px;
  color: #344054;
}

.zfa-product__advantages li {
  margin: 8px 0;
}

.zfa-btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 12px 16px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease;
}

.zfa-btn--primary {
  background: var(--color-primary);
  color: #fff;
}

.zfa-btn--primary:hover {
  background: var(--color-primary-dark);
}

.zfa-btn--outline {
  background: #fff;
  color: var(--color-primary);
  border-color: #cfd4dc;
}

.zfa-btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.zfa-product__section--inquiry {
  scroll-margin-top: 90px;
}

.zfa-product__inquiry-lead {
  margin: 0 0 14px;
  color: #344054;
}

.zfa-product__form {
  margin-top: 10px;
  border: 1px solid #e6e9ef;
  border-radius: 14px;
  background: #fff;
  padding: 16px;
}

.zfa-product__form-status {
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 12px;
}

.zfa-product__form-status--ok {
  background: #ecfdf3;
  color: #067647;
  border: 1px solid #abefc6;
}

.zfa-product__form-status--err {
  background: #fef3f2;
  color: #b42318;
  border: 1px solid #fecdca;
}

.zfa-product__form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.zfa-product__field {
  display: block;
  margin-bottom: 12px;
}

.zfa-product__label {
  display: inline-block;
  margin-bottom: 6px;
  color: #101828;
  font-weight: 600;
}

.zfa-product__required {
  color: #b42318;
}

.zfa-product__input,
.zfa-product__textarea {
  width: 100%;
  border: 1px solid #d0d5dd;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 16px;
  box-sizing: border-box;
}

.zfa-product__input:focus,
.zfa-product__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.18);
}

.zfa-product__form-actions {
  margin-top: 6px;
  display: flex;
  justify-content: flex-start;
}

@media (max-width: 980px) {
  .zfa-product__hero-grid {
    grid-template-columns: 1fr;
  }

  .zfa-product__gallery-thumbs {
    padding-bottom: 6px;
  }

  .zfa-product__images {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .zfa-product__title {
    font-size: 26px;
  }

  .zfa-product__gallery-thumbs {
    padding-bottom: 6px;
  }

  .zfa-product__form-grid {
    grid-template-columns: 1fr;
  }

  .zfa-product__images {
    grid-template-columns: 1fr;
  }

  .zfa-product__images-item {
    height: 220px;
  }
}