/*
Theme Name: SJ27HB
Theme URI: https://sj27hb.com/themes/sj27hb/
Author: SJ27HB Team
Author URI: https://sj27hb.com/
Description: SJ27HB（石家庄贰柒环保）是一款面向中国工业环保企业的官网主题，采用模块型建站方案：页面由可复用模块纵向拼装，内置 Hero、数据、业务、产品装备、图文、案例、资质、评价、FAQ、CTA 表单与页脚等十二类模块。主题符合 wordpress.org 最新标签规则：完全转义与可翻译字符串、GPL v2+ 许可、支持自定义 Logo、自定义强调色、页脚小工具、特色图片与主题定制器联系方式配置。默认演示内容为河北石家庄一家环保装备制造企业。
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.2
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sj27hb
Tags: one-column, two-columns, custom-colors, custom-logo, custom-menu, featured-images, footer-widgets, full-width-template, threaded-comments, blog
*/

/*--------------------------------------------------------------
>>> 目录
1.  变量与基础
2.  排版
3.  布局容器
4.  按钮与表单
5.  顶部导航模块
6.  Hero 模块
7.  数据模块
8.  模块外壳
9.  业务领域模块
10. 产品装备模块
11. 图文模块
12. 案例模块
13. 资质模块
14. 评价模块
15. FAQ 模块
16. CTA 与表单模块
17. 页脚模块
18. 博客与归档
19. 文章与页面
20. 评论
21. 侧边栏与小工具
22. 搜索与 404
23. 动效
24. 响应式
--------------------------------------------------------------*/

/*--------------------------------------------------------------
1. 变量与基础
--------------------------------------------------------------*/
:root {
  --sj-accent: #0e7a5f;
  --sj-accent-ink: #0a3d30;
  --sj-accent-soft: #e7f2ed;
  --sj-bg: #f5f7f6;
  --sj-surface: #ffffff;
  --sj-ink: #17211d;
  --sj-muted: #5b6b64;
  --sj-line: #e2e9e5;
  --sj-radius: 10px;
  --sj-shadow: 0 10px 30px rgba(23, 33, 29, 0.07);
  --sj-container: 1200px;
  --sj-gutter: 24px;
  --sj-section-gap: clamp(72px, 8vw, 112px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--sj-bg);
  color: var(--sj-ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--sj-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--sj-accent-ink);
}

/*--------------------------------------------------------------
2. 排版
--------------------------------------------------------------*/
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  line-height: 1.25;
  font-weight: 700;
  color: var(--sj-ink);
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(30px, 4.4vw, 48px); }
h2 { font-size: clamp(24px, 3.2vw, 34px); }
h3 { font-size: clamp(19px, 2.2vw, 22px); }
h4 { font-size: 18px; }

p {
  margin: 0 0 1.2em;
  color: var(--sj-muted);
}

blockquote {
  margin: 0 0 1.2em;
  padding: 16px 24px;
  border-left: 3px solid var(--sj-accent);
  background: var(--sj-surface);
  border-radius: 0 var(--sj-radius) var(--sj-radius) 0;
  color: var(--sj-muted);
}

hr {
  border: 0;
  border-top: 1px solid var(--sj-line);
  margin: 2em 0;
}

code, kbd, pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
  background: var(--sj-accent-soft);
  border-radius: 6px;
}

code { padding: 2px 6px; }
pre { padding: 18px; overflow: auto; }

/*--------------------------------------------------------------
3. 布局容器
--------------------------------------------------------------*/
.sj-container {
  width: 100%;
  max-width: var(--sj-container);
  margin: 0 auto;
  padding: 0 var(--sj-gutter);
}

.sj-container--narrow {
  max-width: 820px;
}

.sj-skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--sj-accent-ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 8px 0;
}

.sj-skip-link:focus {
  left: 0;
  color: #fff;
}

/*--------------------------------------------------------------
4. 按钮与表单
--------------------------------------------------------------*/
.sj-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.sj-btn--solid {
  background: var(--sj-accent);
  color: #fff;
}

.sj-btn--solid:hover {
  background: var(--sj-accent-ink);
  color: #fff;
  transform: translateY(-1px);
}

.sj-btn--ghost {
  background: transparent;
  color: var(--sj-ink);
  border-color: var(--sj-line);
}

.sj-btn--ghost:hover {
  border-color: var(--sj-accent);
  color: var(--sj-accent);
}

.sj-btn--light {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

.sj-btn--light:hover {
  background: #fff;
  color: var(--sj-accent-ink);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
input[type="search"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--sj-line);
  border-radius: 8px;
  background: var(--sj-surface);
  color: var(--sj-ink);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--sj-accent);
  box-shadow: 0 0 0 3px rgba(14, 122, 95, 0.14);
}

/*--------------------------------------------------------------
5. 顶部导航模块
--------------------------------------------------------------*/
.sj-topbar {
  background: var(--sj-accent-ink);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}

.sj-topbar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 8px 0;
}

.sj-topbar a {
  color: rgba(255, 255, 255, 0.82);
}

.sj-topbar a:hover {
  color: #fff;
}

.sj-topbar__meta {
  display: flex;
  gap: 22px;
  align-items: center;
  white-space: nowrap;
}

.sj-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--sj-line);
  transition: box-shadow 0.25s ease;
}

.sj-header.is-scrolled {
  box-shadow: 0 8px 24px rgba(23, 33, 29, 0.08);
}

.sj-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 76px;
}

.sj-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--sj-ink);
}

.sj-brand:hover { color: var(--sj-ink); }

.sj-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--sj-accent);
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  flex: none;
}

.sj-brand__name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

.sj-brand__sub {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--sj-muted);
  letter-spacing: 0.14em;
}

.sj-custom-logo {
  display: inline-flex;
  align-items: center;
}

.sj-custom-logo img {
  max-height: 52px;
  width: auto;
}

.sj-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.sj-nav a {
  display: inline-block;
  padding: 10px 14px;
  color: var(--sj-ink);
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
}

.sj-nav a:hover {
  color: var(--sj-accent);
  background: var(--sj-accent-soft);
}

.sj-nav .current-menu-item > a,
.sj-nav .current_page_item > a {
  color: var(--sj-accent);
  background: var(--sj-accent-soft);
}

.sj-nav ul ul {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  padding: 8px;
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: 10px;
  box-shadow: var(--sj-shadow);
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}

.sj-nav li { position: relative; }
.sj-nav li:hover > ul { display: flex; }
.sj-nav ul ul a { padding: 10px 12px; font-size: 14px; }

.sj-header__cta {
  flex: none;
}

.sj-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--sj-line);
  border-radius: 8px;
  background: var(--sj-surface);
  cursor: pointer;
}

.sj-nav-toggle span {
  display: block;
  height: 2px;
  background: var(--sj-ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

body.sj-nav-open .sj-nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.sj-nav-open .sj-nav-toggle span:nth-child(2) { opacity: 0; }
body.sj-nav-open .sj-nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/*--------------------------------------------------------------
6. Hero 模块
--------------------------------------------------------------*/
.sj-hero {
  position: relative;
  background: var(--sj-surface);
  overflow: hidden;
}

.sj-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(23, 33, 29, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 33, 29, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 80% at 30% 20%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 30% 20%, #000 30%, transparent 75%);
}

.sj-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
  padding: clamp(56px, 7vw, 96px) 0;
}

.sj-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--sj-line);
  border-radius: 999px;
  background: var(--sj-bg);
  font-size: 13px;
  color: var(--sj-muted);
  margin-bottom: 22px;
}

.sj-hero__badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sj-accent);
}

.sj-hero__title {
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.18;
  margin-bottom: 18px;
}

.sj-hero__title em {
  font-style: normal;
  color: var(--sj-accent);
}

.sj-hero__desc {
  max-width: 520px;
  font-size: 17px;
  margin-bottom: 30px;
}

.sj-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.sj-hero__figure {
  position: relative;
}

.sj-hero__figure img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border-radius: var(--sj-radius);
  box-shadow: var(--sj-shadow);
}

.sj-hero__figure::after {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  border: 1px solid var(--sj-accent);
  border-radius: var(--sj-radius);
  z-index: -1;
  opacity: 0.5;
}

.sj-hero__chip {
  position: absolute;
  left: -14px;
  bottom: 26px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: 10px;
  box-shadow: var(--sj-shadow);
  font-size: 13px;
  color: var(--sj-muted);
  max-width: 240px;
  line-height: 1.5;
}

.sj-hero__chip strong {
  color: var(--sj-ink);
}

.sj-hero__chip svg {
  flex: none;
  color: var(--sj-accent);
}

/*--------------------------------------------------------------
7. 数据模块
--------------------------------------------------------------*/
.sj-stats {
  background: var(--sj-accent-ink);
  color: #fff;
}

.sj-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 44px 0;
}

.sj-stat__num {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
}

.sj-stat__num sup {
  font-size: 0.5em;
  color: #8fe3c8;
  margin-left: 2px;
}

.sj-stat__label {
  margin-top: 6px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.66);
}

/*--------------------------------------------------------------
8. 模块外壳
--------------------------------------------------------------*/
.sj-section {
  padding: var(--sj-section-gap) 0;
}

.sj-section--surface {
  background: var(--sj-surface);
  border-top: 1px solid var(--sj-line);
  border-bottom: 1px solid var(--sj-line);
}

.sj-section__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: end;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.sj-section__index {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--sj-accent);
  padding-bottom: 8px;
}

.sj-section__title {
  margin: 0;
}

.sj-section__desc {
  max-width: 560px;
  margin: 10px 0 0;
  font-size: 15px;
}

.sj-section__link {
  padding-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

/*--------------------------------------------------------------
9. 业务领域模块
--------------------------------------------------------------*/
.sj-biz__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.sj-biz-card {
  position: relative;
  padding: 30px 28px;
  background: var(--sj-bg);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.sj-biz-card:hover {
  transform: translateY(-4px);
  background: var(--sj-surface);
  box-shadow: var(--sj-shadow);
}

.sj-biz-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--sj-accent-soft);
  color: var(--sj-accent);
  margin-bottom: 20px;
}

.sj-biz-card h3 {
  margin-bottom: 10px;
}

.sj-biz-card p {
  font-size: 14.5px;
  margin-bottom: 16px;
}

.sj-biz-card__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  font-size: 13.5px;
  color: var(--sj-muted);
}

.sj-biz-card__list li {
  padding: 7px 0 7px 20px;
  border-top: 1px dashed var(--sj-line);
  position: relative;
}

.sj-biz-card__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sj-accent);
}

.sj-biz-card__link {
  font-size: 14px;
  font-weight: 600;
}

/*--------------------------------------------------------------
10. 产品装备模块
--------------------------------------------------------------*/
.sj-equip__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.sj-equip-card {
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sj-equip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sj-shadow);
}

.sj-equip-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.sj-equip-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.sj-equip-card:hover .sj-equip-card__media img {
  transform: scale(1.045);
}

.sj-equip-card__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(10, 61, 48, 0.85);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.04em;
}

.sj-equip-card__body {
  padding: 20px 22px 24px;
}

.sj-equip-card h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.sj-equip-card__spec {
  font-size: 13px;
  color: var(--sj-muted);
  margin-bottom: 14px;
}

.sj-equip-card__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  font-weight: 600;
}

.sj-equip-card__foot .sj-arrow {
  transition: transform 0.25s ease;
}

.sj-equip-card:hover .sj-arrow {
  transform: translateX(4px);
}

/*--------------------------------------------------------------
11. 图文模块
--------------------------------------------------------------*/
.sj-about__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

.sj-about__figure {
  position: relative;
}

.sj-about__figure img {
  width: 100%;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
  border-radius: var(--sj-radius);
}

.sj-about__figure::before {
  content: "";
  position: absolute;
  inset: -20px 20px 20px -20px;
  border-radius: var(--sj-radius);
  background: var(--sj-accent-soft);
  z-index: -1;
}

.sj-about__badge {
  position: absolute;
  right: -16px;
  bottom: -20px;
  background: var(--sj-accent-ink);
  color: #fff;
  border-radius: var(--sj-radius);
  padding: 18px 22px;
  text-align: center;
}

.sj-about__badge strong {
  display: block;
  font-size: 26px;
  line-height: 1.1;
}

.sj-about__badge span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.66);
}

.sj-about__points {
  list-style: none;
  margin: 26px 0 30px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.sj-about__points li {
  display: flex;
  gap: 16px;
  padding: 16px 18px;
  background: var(--sj-bg);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  font-size: 14.5px;
  color: var(--sj-muted);
}

.sj-about__points li strong {
  color: var(--sj-ink);
}

.sj-point__no {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
  color: var(--sj-accent);
  padding-top: 2px;
  flex: none;
}

/*--------------------------------------------------------------
12. 案例模块
--------------------------------------------------------------*/
.sj-case__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.sj-case-card {
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sj-case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sj-shadow);
}

.sj-case-card__media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.sj-case-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.sj-case-card:hover .sj-case-card__media img {
  transform: scale(1.05);
}

.sj-case-card__body {
  padding: 20px 22px 24px;
}

.sj-case-card__meta {
  font-size: 12.5px;
  color: var(--sj-accent);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.sj-case-card h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.sj-case-card__stats {
  display: flex;
  gap: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--sj-line);
  font-size: 12.5px;
  color: var(--sj-muted);
}

.sj-case-card__stats strong {
  display: block;
  font-size: 17px;
  color: var(--sj-ink);
}

/*--------------------------------------------------------------
13. 资质模块
--------------------------------------------------------------*/
.sj-certs {
  background: var(--sj-accent-soft);
  border-top: 1px solid var(--sj-line);
  border-bottom: 1px solid var(--sj-line);
}

.sj-certs__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 30px 0;
}

.sj-certs__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--sj-accent-ink);
  white-space: nowrap;
}

.sj-certs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.sj-certs__list li {
  padding: 9px 18px;
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--sj-ink);
}

/*--------------------------------------------------------------
14. 评价模块
--------------------------------------------------------------*/
.sj-quote__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.sj-quote-card {
  padding: 28px 26px;
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sj-quote-card__mark {
  color: var(--sj-accent);
  font-size: 34px;
  line-height: 1;
  font-family: Georgia, serif;
}

.sj-quote-card blockquote {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  font-size: 14.5px;
  color: var(--sj-muted);
  flex: 1;
}

.sj-quote-card__who {
  padding-top: 14px;
  border-top: 1px dashed var(--sj-line);
  font-size: 13px;
  color: var(--sj-muted);
}

.sj-quote-card__who strong {
  display: block;
  color: var(--sj-ink);
  font-size: 14.5px;
}

/*--------------------------------------------------------------
15. FAQ 模块
--------------------------------------------------------------*/
.sj-faq {
  max-width: 820px;
  margin: 0 auto;
}

.sj-faq details {
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  margin-bottom: 14px;
  overflow: hidden;
}

.sj-faq summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 15.5px;
  cursor: pointer;
  list-style: none;
  color: var(--sj-ink);
}

.sj-faq summary::-webkit-details-marker { display: none; }

.sj-faq summary::after {
  content: "+";
  flex: none;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sj-line);
  border-radius: 50%;
  color: var(--sj-accent);
  font-weight: 400;
  transition: transform 0.25s ease;
}

.sj-faq details[open] summary::after {
  transform: rotate(45deg);
  background: var(--sj-accent);
  color: #fff;
  border-color: var(--sj-accent);
}

.sj-faq details p {
  padding: 0 22px 20px;
  margin: 0;
  font-size: 14.5px;
}

/*--------------------------------------------------------------
16. CTA 与表单模块
--------------------------------------------------------------*/
.sj-cta {
  background: var(--sj-accent-ink);
  color: #fff;
}

.sj-cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(36px, 5vw, 72px);
  padding: clamp(56px, 7vw, 88px) 0;
  align-items: start;
}

.sj-cta h2 {
  color: #fff;
}

.sj-cta p {
  color: rgba(255, 255, 255, 0.68);
}

.sj-cta__phone {
  display: inline-flex;
  align-items: baseline;
  gap: 12px;
  margin: 18px 0 26px;
}

.sj-cta__phone strong {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #8fe3c8;
}

.sj-cta__contact {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.72);
}

.sj-cta__contact li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.sj-cta__contact svg {
  flex: none;
  margin-top: 4px;
  color: #8fe3c8;
}

.sj-form {
  background: var(--sj-surface);
  border-radius: var(--sj-radius);
  padding: clamp(24px, 3vw, 34px);
}

.sj-form h3 {
  margin-bottom: 4px;
}

.sj-form__sub {
  font-size: 13.5px;
  margin-bottom: 20px;
}

.sj-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.sj-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--sj-ink);
  margin-bottom: 6px;
}

.sj-form input,
.sj-form select,
.sj-form textarea {
  margin-bottom: 14px;
  background: var(--sj-bg);
}

.sj-form textarea {
  min-height: 96px;
  resize: vertical;
}

.sj-form .sj-btn {
  width: 100%;
  justify-content: center;
}

.sj-form__note {
  font-size: 12px;
  color: var(--sj-muted);
  text-align: center;
  margin: 12px 0 0;
}

/*--------------------------------------------------------------
17. 页脚模块
--------------------------------------------------------------*/
.sj-footer {
  background: #0c1a15;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.sj-footer a {
  color: rgba(255, 255, 255, 0.62);
}

.sj-footer a:hover {
  color: #8fe3c8;
}

.sj-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 36px;
  padding: 60px 0 44px;
}

.sj-footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  margin-bottom: 16px;
}

.sj-footer__brand .sj-brand__mark {
  background: rgba(52, 211, 153, 0.16);
  color: #8fe3c8;
}

.sj-footer__blurb {
  font-size: 13.5px;
  line-height: 1.9;
  max-width: 300px;
}

.sj-footer h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
}

.sj-footer__menu,
.sj-footer__contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 13.5px;
}

.sj-footer__contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.sj-footer__contact svg {
  flex: none;
  margin-top: 4px;
  color: #8fe3c8;
}

.sj-footer__bar {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding: 20px 0;
}

.sj-footer__bar-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.42);
}

.sj-footer__bar a {
  color: rgba(255, 255, 255, 0.42);
}

.sj-footer__bar a:hover {
  color: #8fe3c8;
}

.sj-back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--sj-line);
  background: var(--sj-surface);
  color: var(--sj-ink);
  box-shadow: var(--sj-shadow);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.sj-back-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/*--------------------------------------------------------------
18. 博客与归档
--------------------------------------------------------------*/
.sj-page-head {
  background: var(--sj-surface);
  border-bottom: 1px solid var(--sj-line);
  padding: clamp(40px, 5vw, 64px) 0;
}

.sj-page-head h1 {
  margin-bottom: 8px;
}

.sj-breadcrumb {
  font-size: 13px;
  color: var(--sj-muted);
  margin-bottom: 10px;
}

.sj-breadcrumb a { color: var(--sj-muted); }
.sj-breadcrumb a:hover { color: var(--sj-accent); }

.sj-posts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  padding: clamp(40px, 5vw, 64px) 0;
}

.sj-post-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sj-post-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sj-shadow);
}

.sj-post-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.sj-post-card__body {
  padding: 22px 24px;
}

.sj-post-card__meta {
  font-size: 12.5px;
  color: var(--sj-muted);
  margin-bottom: 8px;
}

.sj-post-card__meta a { color: var(--sj-accent); }

.sj-post-card h2,
.sj-post-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.sj-post-card h2 a,
.sj-post-card h3 a {
  color: var(--sj-ink);
}

.sj-post-card h2 a:hover,
.sj-post-card h3 a:hover {
  color: var(--sj-accent);
}

.sj-post-card__excerpt {
  font-size: 14px;
  margin-bottom: 12px;
}

.sj-post-card__more {
  font-size: 13.5px;
  font-weight: 600;
}

.sj-pagination {
  padding: 12px 0 64px;
}

.sj-pagination .nav-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.sj-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--sj-line);
  border-radius: 8px;
  background: var(--sj-surface);
  color: var(--sj-ink);
  font-size: 14px;
}

.sj-pagination .page-numbers.current,
.sj-pagination .page-numbers:hover {
  background: var(--sj-accent);
  border-color: var(--sj-accent);
  color: #fff;
}

/*--------------------------------------------------------------
19. 文章与页面
--------------------------------------------------------------*/
.sj-single {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  padding: clamp(40px, 5vw, 64px) 0;
}

.sj-entry {
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  padding: clamp(24px, 4vw, 44px);
}

.sj-entry__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--sj-muted);
  margin-bottom: 20px;
}

.sj-entry__meta a { color: var(--sj-muted); }
.sj-entry__meta a:hover { color: var(--sj-accent); }

.sj-entry__thumb {
  margin: 0 0 24px;
}

.sj-entry__thumb img {
  width: 100%;
  border-radius: var(--sj-radius);
}

.sj-entry-content > p:first-of-type {
  font-size: 16.5px;
}

.sj-entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px dashed var(--sj-line);
}

.sj-entry-tags a {
  padding: 5px 12px;
  border: 1px solid var(--sj-line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--sj-muted);
}

.sj-entry-tags a:hover {
  border-color: var(--sj-accent);
  color: var(--sj-accent);
}

.sj-entry-footer {
  margin-top: 24px;
  font-size: 13.5px;
  color: var(--sj-muted);
}

.post-navigation .nav-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.post-navigation .nav-previous,
.post-navigation .nav-next {
  padding: 16px 18px;
  background: var(--sj-bg);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  font-size: 13.5px;
}

.post-navigation .nav-next { text-align: right; }
.post-navigation a { color: var(--sj-ink); font-weight: 600; }
.post-navigation a:hover { color: var(--sj-accent); }

/*--------------------------------------------------------------
20. 评论
--------------------------------------------------------------*/
.sj-comments {
  margin-top: 36px;
}

.sj-comments .comment-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sj-comments .comment-list li {
  padding: 18px 20px;
  background: var(--sj-bg);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  margin-bottom: 14px;
}

.sj-comments .children {
  list-style: none;
  margin: 14px 0 0;
  padding-left: 18px;
}

.sj-comments .comment-meta {
  font-size: 13px;
  color: var(--sj-muted);
  margin-bottom: 8px;
}

.sj-comments .comment-author img {
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

.sj-comments .comment-author .fn {
  font-style: normal;
  font-weight: 600;
  color: var(--sj-ink);
}

.sj-comments .comment-content {
  font-size: 14.5px;
}

.sj-comments .reply {
  margin-top: 10px;
  font-size: 13px;
}

.comment-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.comment-form input,
.comment-form textarea {
  margin-bottom: 14px;
}

/*--------------------------------------------------------------
21. 侧边栏与小工具
--------------------------------------------------------------*/
.sj-sidebar .widget {
  background: var(--sj-surface);
  border: 1px solid var(--sj-line);
  border-radius: var(--sj-radius);
  padding: 24px;
  margin-bottom: 24px;
}

.sj-sidebar .widget-title {
  font-size: 16px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--sj-line);
}

.sj-sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
}

.sj-sidebar li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--sj-line);
}

.sj-sidebar li:last-child { border-bottom: 0; }

.sj-sidebar .search-form {
  display: flex;
  gap: 8px;
}

/*--------------------------------------------------------------
22. 搜索与 404
--------------------------------------------------------------*/
.sj-none {
  padding: clamp(48px, 6vw, 80px) 0;
  text-align: center;
}

.sj-none__code {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: clamp(64px, 9vw, 110px);
  font-weight: 700;
  color: var(--sj-accent);
  opacity: 0.25;
  line-height: 1;
  margin-bottom: 12px;
}

.sj-search-form {
  display: flex;
  gap: 8px;
  max-width: 480px;
  margin: 24px auto 0;
}

.sj-search-form input {
  flex: 1;
}

/*--------------------------------------------------------------
23. 动效
--------------------------------------------------------------*/
.sj-reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.sj-reveal.sj-in {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sj-reveal { opacity: 1; transform: none; transition: none; }
  .sj-btn, .sj-equip-card, .sj-case-card, .sj-biz-card, .sj-post-card { transition: none; }
}

/*--------------------------------------------------------------
24. 响应式
--------------------------------------------------------------*/
@media (max-width: 1080px) {
  .sj-equip__grid, .sj-biz__grid, .sj-case__grid, .sj-quote__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .sj-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .sj-hero__inner {
    grid-template-columns: 1fr;
  }
  .sj-about__grid,
  .sj-cta__grid {
    grid-template-columns: 1fr;
  }
  .sj-single {
    grid-template-columns: 1fr;
  }
  .sj-stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 24px;
  }
  .sj-nav-toggle { display: flex; }
  .sj-header__cta { display: none; }
  .sj-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 84vw);
    background: var(--sj-surface);
    border-left: 1px solid var(--sj-line);
    padding: 96px 24px 32px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    box-shadow: -16px 0 40px rgba(23, 33, 29, 0.12);
  }
  body.sj-nav-open .sj-nav { transform: translateX(0); }
  .sj-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .sj-nav a {
    display: block;
    padding: 13px 14px;
    font-size: 16px;
  }
  .sj-nav ul ul {
    display: block;
    position: static;
    box-shadow: none;
    border: 0;
    padding: 0 0 0 16px;
  }
  .sj-nav li:hover > ul { display: block; }
}

@media (max-width: 680px) {
  .sj-topbar__meta span:nth-child(2) { display: none; }
  .sj-equip__grid, .sj-biz__grid, .sj-case__grid, .sj-quote__grid {
    grid-template-columns: 1fr;
  }
  .sj-posts { grid-template-columns: 1fr; }
  .sj-post-card { grid-template-columns: 1fr; }
  .sj-form__row { grid-template-columns: 1fr; }
  .sj-section__head {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .sj-section__link { display: none; }
  .sj-footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .sj-hero__chip { display: none; }
  .sj-about__figure { margin-right: 16px; }
}