/*
Theme Name: Guangzhou Gouler
Theme URI: https://gaoer.example
Author: Guangzhou Gouler Construction Technology Co., Ltd.
Description: 广州高尔建筑技术有限公司 WordPress 企业站主题。
Version: 1.0.0
Text Domain: gaoer
*/

/* ============================================================
   广州高尔建筑技术有限公司 · 演示站点设计系统
   语言:工程蓝体系 —— 深蓝 / 工程蓝 / 白底 / 浅蓝分隔 / 技术标注
   全站浅色,版式统一:同一套标题节奏 + 同一种网格卡片
   ============================================================ */

:root {
  --ink: #082e61;         /* 深蓝:标题、深色文字、按钮 */
  --text: #082e61;        /* 正文 */
  --muted: #52657b;       /* 次要文字 */
  --line: #d9e7f5;        /* 浅蓝分隔线 */
  --paper: #ffffff;        /* 白色区块底 */
  --white: #ffffff;
  --soft: #edf5ff;        /* 浅蓝模块底 */
  --accent: #00428e;      /* 工程蓝 */
  --accent-dark: #003b7a;
  --max: 1220px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --ease: cubic-bezier(.22, .61, .21, 1);
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.modal-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }
::selection { background: var(--accent); color: #fff; }

.shell { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; }

h1, h2, h3 { color: var(--ink); }

/* ---------- 技术标注(等宽字体小标签) ---------- */
.hero-kicker, .section-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.hero-kicker::before, .section-kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--accent);
}

/* ---------- 顶部演示条 ---------- */
.demo-bar {
  min-height: 34px;
  padding: 6px 28px;
  background: var(--ink);
  color: rgba(255, 255, 255, .62);
  display: flex;
  align-items: center;
  gap: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
}
.demo-bar span:first-child {
  color: #fff;
  background: var(--accent);
  padding: 2px 8px;
  font-family: var(--font);
  font-weight: 700;
  letter-spacing: .1em;
}
.demo-bar a { margin-left: auto; color: rgba(255, 255, 255, .82); transition: color .2s; }
.demo-bar a:hover { color: #fff; }

/* ---------- 导航头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, box-shadow .25s;
}
.site-header.scrolled {
  border-color: var(--line);
  box-shadow: 0 10px 30px rgba(26, 26, 26, .05);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { display: block; width: 42px; height: 42px; object-fit: contain; flex: 0 0 auto; }
.brand-mark {
  width: 38px;
  height: 38px;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 21px;
  line-height: 1;
  position: relative;
  transition: background .25s var(--ease);
}
.brand-mark::after {
  content: "";
  position: absolute;
  right: -3px;
  bottom: -3px;
  width: 8px;
  height: 8px;
  background: var(--accent);
}
.brand:hover .brand-mark { background: var(--accent); }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 16px; letter-spacing: .1em; color: var(--ink); }
.brand small { font-size: 10px; color: var(--muted); letter-spacing: .18em; margin-top: 2px; }

.site-nav { display: flex; align-items: center; gap: 28px; color: var(--text); font-size: 14px; }
.site-nav a { position: relative; padding: 25px 0; transition: color .2s; }
.site-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 17px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s var(--ease);
}
.site-nav a:not(.nav-cta):hover { color: var(--ink); }
.site-nav a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-cta {
  padding: 9px 16px !important;
  background: var(--ink);
  color: #fff;
  font-weight: 700;
  border: 1px solid var(--ink);
  transition: background .25s, color .25s;
}
.nav-cta:hover { background: transparent; color: var(--ink); }
.nav-cta span, .button span, .arrow-link span { margin-left: 8px; }

.menu-button { display: none; background: none; border: 0; width: 42px; height: 42px; padding: 10px; }
.menu-button span { display: block; height: 2px; background: var(--ink); margin: 6px 0; transition: .2s; }
.menu-button[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-button[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- 按钮 ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  padding: 13px 20px;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .04em;
  transition: transform .25s var(--ease), background .25s, color .25s, border-color .25s;
}
.button-accent { background: var(--accent); color: #fff; }
.button-accent:hover { background: var(--ink); transform: translateY(-2px); }
.button-dark { background: var(--ink); color: #fff; }
.button-dark:hover { background: var(--accent); transform: translateY(-2px); }

.text-link { color: var(--ink); font-size: 14px; border-bottom: 1px solid rgba(26, 26, 26, .22); padding-bottom: 4px; transition: color .2s, border-color .2s; }
.text-link:hover { color: var(--accent); border-color: var(--accent); }

.arrow-link {
  display: inline-flex;
  align-items: center;
  margin-top: 26px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 6px;
  transition: color .2s, border-color .2s;
}
.arrow-link span { transition: transform .25s var(--ease); }
.arrow-link:hover { color: var(--accent); border-color: var(--accent); }
.arrow-link:hover span { transform: translate(3px, -3px); }

/* ---------- Hero(浅色) ---------- */
.hero {
  position: relative;
  min-height: 620px;
  background: var(--white);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.hero-media { position: absolute; inset: 0; overflow: hidden; }
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
  animation: heroZoom 14s var(--ease) both;
}
.hero-wash {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(255, 255, 255, .96) 0%, rgba(255, 255, 255, .82) 46%, rgba(255, 255, 255, .3) 100%);
}
.hero-content { position: relative; z-index: 1; flex: 1; display: flex; align-items: center; padding: 80px 0; }
.hero-copy { max-width: 640px; }

/* 入场动画:逐行升起 */
.hero-kicker, .hero h1, .hero-lead, .hero-actions, .hero-proof { animation: rise .9s var(--ease) both; }
.hero h1 { animation-delay: .08s; }
.hero-lead { animation-delay: .18s; }
.hero-actions { animation-delay: .28s; }
.hero-proof { animation-delay: .4s; }

.hero h1 {
  margin: 0;
  font-size: clamp(40px, 5.4vw, 68px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.02em;
}
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 500px; margin: 26px 0 34px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.hero-actions { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; }

.hero-proof {
  display: flex;
  gap: 44px;
  margin-top: 56px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .06em;
}
.hero-proof span { display: flex; flex-direction: column; gap: 4px; }
.hero-proof strong {
  font-family: var(--mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0;
}

.hero-rail { position: relative; z-index: 2; border-top: 1px solid var(--line); background: rgba(255, 255, 255, .92); backdrop-filter: blur(6px); }
.rail-inner {
  display: flex;
  align-items: center;
  gap: 34px;
  padding: 14px 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
}
.rail-inner span::before { content: "· "; color: var(--accent); }
.rail-inner span:first-child::before { content: ""; }
.rail-end { margin-left: auto; color: rgba(26, 26, 26, .42); }
.rail-end::before { content: "" !important; }

/* ---------- 区块通用(统一节奏) ---------- */
.section { padding: 104px 0; }
.section-heading { display: flex; justify-content: space-between; gap: 30px; align-items: flex-end; margin-bottom: 52px; }
.section-heading > p { max-width: 340px; color: var(--muted); font-size: 14px; margin: 0; }
.section-heading-tight { margin-bottom: 30px; }

.split-section h2, .section-heading h2, .about-copy h2,
.video-intro h2, .jobs-layout h2, .contact-layout h2 {
  margin: 0;
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.02em;
}
.video-intro h2 em, .jobs-layout h2 em, .contact-layout h2 em { color: var(--accent); font-style: normal; }

/* 滚动显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* 统一卡片:业务 / 案例 / 视频共用同一形态 */
.capability-card, .case-card, .video-feature-card, .video-tile {
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--text);
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.capability-card:hover, .case-card:hover, .video-feature-card:hover, .video-tile:hover {
  transform: translateY(-5px);
  border-color: var(--ink);
  box-shadow: 0 18px 40px rgba(26, 26, 26, .08);
}
.capability-card img, .case-card img, .video-feature-card img, .video-tile img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
  transition: transform .6s var(--ease);
}
.capability-card:hover img, .case-card:hover img, .video-feature-card:hover img, .video-tile:hover img { transform: scale(1.04); }

/* ---------- 关于 ---------- */
.about-section { background: var(--white); }
.about-intro { display: grid; grid-template-columns: 1.05fr .95fr; gap: 72px; align-items: center; }
.about-visual { position: relative; border: 1px solid var(--line); overflow: hidden; }
.about-visual::after {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 26px; height: 26px;
  border-left: 3px solid var(--accent);
  border-top: 3px solid var(--accent);
  z-index: 1;
}
.about-visual img { width: 100%; aspect-ratio: 1.35; object-fit: cover; transition: transform .8s var(--ease); }
.about-visual:hover img { transform: scale(1.03); }
.about-visual span {
  position: absolute;
  left: 0; bottom: 0;
  color: var(--ink);
  background: rgba(255, 255, 255, .9);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
}
.about-copy { max-width: 520px; }
.about-copy > p:not(.section-kicker) { color: var(--muted); font-size: 16px; margin: 20px 0 0; }

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 88px;
  background: var(--line);
  border: 1px solid var(--line);
}
.principle-grid article { background: var(--white); padding: 30px 32px; min-height: 200px; position: relative; }
.principle-grid article::before {
  content: "";
  position: absolute;
  left: 0; top: -1px;
  width: 0; height: 3px;
  background: var(--accent);
  transition: width .35s var(--ease);
}
.principle-grid article:hover::before { width: calc(100% + 2px); }
.principle-grid article > span { color: var(--accent); font-family: var(--mono); font-size: 12px; letter-spacing: .16em; }
.principle-grid h3 { margin: 38px 0 10px; font-size: 20px; }
.principle-grid p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- 业务能力 ---------- */
.business-section { background: var(--paper); border-top: 1px solid var(--line); }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.capability-card { display: flex; flex-direction: column; }
.capability-card > div { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.capability-card span { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; }
.capability-card h3 { margin: 10px 0 8px; font-size: 19px; }
.capability-card p { margin: 0 0 18px; color: var(--muted); font-size: 13.5px; flex: 1; }
.capability-card a { color: var(--ink); font-size: 13px; font-weight: 700; transition: color .2s; }
.capability-card a:hover { color: var(--accent); }

/* ---------- 产品体系 ---------- */
.products-section { background: var(--white); border-top: 1px solid var(--line); }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card { background: var(--paper); border: 1px solid var(--line); cursor: pointer; overflow: hidden; transition: transform .3s var(--ease), border-color .3s, box-shadow .3s; }
.product-card:hover { transform: translateY(-5px); border-color: var(--ink); box-shadow: 0 18px 40px rgba(26, 26, 26, .08); }
.product-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-bottom: 1px solid var(--line); transition: transform .6s var(--ease); }
.product-card:hover img { transform: scale(1.04); }
.product-card > div { padding: 22px; }
.product-card small { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; }
.product-card h3 { margin: 9px 0 8px; font-size: 20px; }
.product-card p { margin: 0 0 18px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.product-applications { color: var(--ink); font-size: 12px; font-family: var(--mono); }

/* ---------- 内容详情页 ---------- */
.detail-hero { padding: 78px 0 90px; background: var(--paper); border-bottom: 1px solid var(--line); }
.detail-hero-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: center; }
.detail-hero-copy { max-width: 560px; }
.detail-back { display: inline-block; color: var(--muted); font-size: 13px; margin-bottom: 42px; transition: color .2s; }
.detail-back:hover { color: var(--accent); }
.detail-hero h1 { margin: 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.15; letter-spacing: -.02em; }
.detail-lead { color: var(--muted); font-size: 17px; line-height: 1.9; margin: 24px 0 0; max-width: 500px; }
.detail-meta { display: flex; gap: 10px 18px; flex-wrap: wrap; margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.detail-meta span { display: inline-block; }
.detail-hero-media { border: 1px solid var(--line); overflow: hidden; background: var(--white); }
.detail-hero-media img { display: block; width: 100%; aspect-ratio: 1.35; object-fit: cover; }
.detail-content { background: var(--white); }
.detail-content-grid { display: grid; grid-template-columns: 1fr .7fr; gap: 90px; }
.detail-content article { max-width: 640px; }
.detail-content h2 { margin: 0 0 22px; font-size: clamp(28px, 3.2vw, 42px); line-height: 1.35; }
.detail-content article > p:not(.section-kicker) { color: var(--muted); font-size: 16px; line-height: 1.9; }
.detail-rich-body { color: var(--muted); font-size: 16px; line-height: 1.9; }
.detail-rich-body > :first-child { margin-top: 0; }
.detail-rich-body p, .detail-rich-body ul, .detail-rich-body ol, .detail-rich-body blockquote, .detail-rich-body figure, .detail-rich-body table { margin: 0 0 22px; }
.detail-rich-body h2, .detail-rich-body h3, .detail-rich-body h4 { color: var(--ink); margin: 42px 0 14px; line-height: 1.35; }
.detail-rich-body h2 { font-size: 28px; }
.detail-rich-body h3 { font-size: 22px; }
.detail-rich-body h4 { font-size: 18px; }
.detail-rich-body ul, .detail-rich-body ol { padding-left: 1.35em; }
.detail-rich-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.detail-rich-body blockquote { padding: 4px 0 4px 20px; border-left: 3px solid var(--accent); color: var(--ink); }
.detail-rich-body figure { overflow: hidden; border: 1px solid var(--line); background: var(--paper); }
.detail-rich-body figure img { display: block; width: 100%; max-height: 520px; object-fit: cover; }
.detail-rich-body figcaption { padding: 10px 14px; color: var(--muted); font-size: 12px; line-height: 1.55; }
.detail-rich-body table { width: 100%; border-collapse: collapse; font-size: 14px; }
.detail-rich-body th, .detail-rich-body td { padding: 10px 12px; border: 1px solid var(--line); text-align: left; }
.detail-rich-body th { color: var(--ink); background: var(--soft); }
.detail-info-section { padding: 82px 0; background: var(--soft); }
.detail-info-section > .shell > h2 { margin: 0 0 34px; color: var(--ink); font-size: clamp(28px, 3.2vw, 42px); line-height: 1.35; }
.detail-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }
.detail-info-grid article { padding-top: 18px; border-top: 2px solid var(--ink); }
.detail-info-grid h3 { margin: 0 0 14px; color: var(--ink); font-size: 18px; }
.detail-info-grid p, .detail-info-grid li, .detail-info-grid dd { color: var(--muted); font-size: 14px; line-height: 1.75; }
.detail-info-grid ul { margin: 0; padding-left: 1.2em; }
.detail-info-grid dl { display: grid; gap: 8px; margin: 0; }
.detail-info-grid dl div { display: grid; grid-template-columns: 82px 1fr; gap: 10px; }
.detail-info-grid dt { color: var(--ink); font-weight: 600; }
.detail-info-grid dd { margin: 0; }
.detail-story-section { padding: 92px 0; background: var(--white); }
.detail-story-toned { background: var(--soft); }
.detail-reading { width: min(100%, 760px); }
.detail-reading > h2 { margin: 0 0 26px; color: var(--ink); font-size: clamp(30px, 3.2vw, 44px); line-height: 1.32; }
.detail-aside { border-top: 3px solid var(--ink); padding: 26px 0 0; }
.detail-aside strong { font-size: 18px; }
.detail-aside p { color: var(--muted); line-height: 1.8; font-size: 14px; }
.detail-relations { padding: 0 0 110px; background: var(--white); }
.detail-related-list { border-top: 1px solid var(--line); }
.detail-related-item { display: grid; grid-template-columns: 150px 1fr 30px; gap: 22px; align-items: center; padding: 22px 0; border-bottom: 1px solid var(--line); color: var(--ink); transition: padding-left .25s var(--ease); }
.detail-related-item:hover { padding-left: 12px; }
.detail-related-item span { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .1em; }
.detail-related-item strong { font-size: 18px; }
.detail-related-item b { color: var(--accent); font-size: 20px; font-weight: 400; }
.detail-empty { color: var(--muted); padding: 28px 0; }
.detail-gallery { padding: 0 0 110px; background: var(--white); }
.detail-gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.detail-gallery-grid figure { margin: 0; border: 1px solid var(--line); overflow: hidden; background: var(--paper); }
.detail-gallery-grid img { display: block; width: 100%; aspect-ratio: 1.25; object-fit: cover; transition: transform .5s var(--ease); }
.detail-gallery-grid figure:hover img { transform: scale(1.03); }
.detail-article--job { width: 100%; margin: 0 auto; padding: 72px 0 96px; }
.detail-article--job > h1 { margin: 0; color: var(--ink); font-size: clamp(32px, 4vw, 48px); line-height: 1.25; text-align: center; }
.detail-copy--job { width: 100%; margin: 46px auto 0; color: var(--ink); font-size: var(--gaoer-job-font-size, 16px); line-height: var(--gaoer-job-line-height, 0.9); text-align: left; }
.detail-copy--job > :first-child { margin-top: 0; }
.detail-copy--job p, .detail-copy--job ul, .detail-copy--job ol, .detail-copy--job blockquote { margin: 0 0 .575em; line-height: inherit; }
.detail-copy--job h2, .detail-copy--job h3, .detail-copy--job h4 { margin: 1.8em 0 .7em; color: var(--ink); line-height: 1.35; }
.detail-copy--job ul, .detail-copy--job ol { padding-left: 1.5em; }
.detail-copy--job img, .detail-copy--job video, .detail-copy--job figure { max-width: 100%; height: auto; }
.detail-media-links { padding: 0 0 100px; background: var(--white); }
.detail-media-link-row { display: flex; gap: 12px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 24px; }
.detail-not-found { min-height: 48vh; background: var(--paper); }
.detail-not-found h1 { margin: 0 0 16px; font-size: clamp(34px, 5vw, 60px); }
.detail-not-found p:not(.section-kicker) { color: var(--muted); margin-bottom: 28px; }

/* ---------- 工程案例 ---------- */
.cases-section { background: var(--white); border-top: 1px solid var(--line); }
.filter-bar { display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap; }
.filter-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  padding: 8px 16px;
  font-size: 13px;
  transition: background .2s, color .2s, border-color .2s;
}
.filter-button:hover { border-color: var(--ink); color: var(--ink); }
.filter-button.active { background: var(--ink); border-color: var(--ink); color: #fff; }

.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { cursor: pointer; }
.case-card-content { padding: 20px 22px 22px; }
.case-card-content small { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; }
.case-card h3 { margin: 8px 0 6px; font-size: 18px; line-height: 1.45; }
.case-card p { margin: 0; color: var(--muted); font-size: 13px; }

/* ---------- 视频中心 ---------- */
.video-section { background: var(--paper); border-top: 1px solid var(--line); }
.video-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; align-items: start; }
.video-intro p:not(.section-kicker) { max-width: 380px; color: var(--muted); margin: 24px 0 32px; font-size: 15px; }

.video-feature-card { position: relative; display: block; cursor: pointer; }
.video-feature-card img { aspect-ratio: 16 / 8; }
.video-feature-copy { padding: 24px 26px 26px; }
.video-feature-copy small { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; }
.video-feature-copy h3 { font-size: 22px; line-height: 1.35; margin: 8px 0; }
.video-feature-copy p { color: var(--muted); margin: 0; font-size: 14px; }
.play-button {
  position: absolute;
  z-index: 2;
  right: 22px; top: 20px;
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 0;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 18px rgba(26, 26, 26, .25);
  transition: transform .3s var(--ease), background .3s;
}
.play-button:hover { transform: scale(1.1); background: var(--ink); }

.video-rail { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 26px; }
.video-tile { cursor: pointer; text-align: left; padding: 0; }
.video-tile div { padding: 10px 12px; }
.video-tile small { color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .06em; }
.video-tile strong { display: block; margin-top: 4px; font-size: 13px; line-height: 1.45; color: var(--ink); }

/* ---------- 新闻 ---------- */
.news-section { background: var(--white); border-top: 1px solid var(--line); }
.news-grid { border-top: 1px solid var(--line); }
.news-item {
  display: grid;
  grid-template-columns: 120px 110px 1fr 30px;
  align-items: center;
  gap: 26px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .25s var(--ease);
}
.news-item:hover { padding-left: 12px; }
.news-item:hover .news-title { color: var(--accent); }
.news-date { color: var(--muted); font-family: var(--mono); font-size: 12px; }
.news-category { color: var(--accent); font-size: 12px; letter-spacing: .1em; }
.news-title { font-size: 17px; font-weight: 700; color: var(--ink); transition: color .2s; }
.news-excerpt { color: var(--muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-arrow { color: var(--accent); font-size: 20px; transition: transform .25s var(--ease); }
.news-item:hover .news-arrow { transform: translate(3px, -3px); }

/* ---------- 招聘 ---------- */
.jobs-section { background: var(--paper); border-top: 1px solid var(--line); }
.jobs-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; }
.jobs-layout > div:last-child { color: var(--muted); max-width: 420px; }
.jobs-layout > div:last-child p { margin: 0 0 26px; }
.jobs-list { margin-top: 72px; border-top: 1px solid var(--line); }
.job-item {
  display: grid;
  grid-template-columns: 1fr 170px 40px;
  gap: 30px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  cursor: pointer;
  transition: padding-left .25s var(--ease);
}
.job-item:hover { padding-left: 12px; }
.job-item:hover h3 { color: var(--accent); }
.job-item h3 { margin: 0 0 5px; font-size: 18px; transition: color .2s; }
.job-item p { margin: 0; color: var(--muted); font-size: 13px; }
.job-meta { color: var(--muted); font-family: var(--mono); font-size: 12px; }
.job-arrow { color: var(--accent); font-size: 22px; transition: transform .25s var(--ease); }
.job-item:hover .job-arrow { transform: translate(3px, -3px); }

/* ---------- 联系 ---------- */
.contact-section { background: var(--white); border-top: 1px solid var(--line); }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.contact-intro { max-width: 420px; color: var(--muted); margin: 24px 0; font-size: 15px; }
.contact-details { display: grid; gap: 12px; margin-top: 36px; color: var(--ink); font-size: 15px; }
.contact-details a { transition: color .2s; }
.contact-details a:hover { color: var(--accent); }
.contact-details span span, .contact-details a span { display: inline-block; width: 46px; color: var(--muted); font-family: var(--mono); font-size: 11px; letter-spacing: .1em; }

.contact-form { background: var(--white); padding: 34px; border: 1px solid var(--line); border-top: 3px solid var(--ink); }
.contact-form label { display: block; color: var(--muted); font-size: 12px; letter-spacing: .04em; margin-bottom: 18px; }
.contact-form input, .contact-form select, .contact-form textarea {
  display: block;
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 9px 0;
  outline: 0;
  resize: vertical;
  transition: border-color .2s;
}
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { border-color: var(--accent); }
.contact-form .button { margin-top: 8px; width: 100%; }
.form-note { color: var(--muted); font-size: 11px; margin: 14px 0 0; }
.form-status { color: var(--accent); font-size: 13px; margin: 10px 0 0; }

/* ---------- 页脚(浅色) ---------- */
.site-footer { background: var(--paper); border-top: 1px solid var(--line); color: var(--muted); padding: 64px 0 22px; }
.footer-top { display: flex; justify-content: space-between; gap: 60px; }
.brand-footer { align-self: flex-start; }
.footer-links { display: grid; grid-template-columns: repeat(3, 130px); gap: 44px; }
.footer-links b { display: block; color: var(--ink); font-size: 12px; letter-spacing: .14em; margin-bottom: 14px; }
.footer-links a { display: block; font-size: 13px; margin: 9px 0; transition: color .2s; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  margin-top: 58px;
  padding-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .04em;
}

/* ---------- 详情弹窗 ---------- */
.detail-dialog {
  width: min(680px, calc(100% - 30px));
  padding: 0;
  border: 0;
  background: var(--white);
  color: var(--text);
  box-shadow: 0 30px 90px rgba(26, 26, 26, .25);
}
.detail-dialog[open] { animation: dialogIn .35s var(--ease); }
.detail-dialog::backdrop { background: rgba(26, 26, 26, .45); backdrop-filter: blur(4px); }
.dialog-close {
  position: absolute;
  right: 12px; top: 12px;
  z-index: 2;
  width: 36px; height: 36px;
  border: 0;
  background: var(--ink);
  color: #fff;
  font-size: 20px;
  line-height: 1;
  transition: background .2s;
}
.dialog-close:hover { background: var(--accent); }
.dialog-image { width: 100%; aspect-ratio: 16 / 8; object-fit: cover; border-bottom: 1px solid var(--line); }
.dialog-content { padding: 30px; }
.dialog-content small { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .14em; }
.dialog-content h3 { font-size: 26px; line-height: 1.35; margin: 10px 0; }
.dialog-content p { color: var(--muted); }
.dialog-meta { display: flex; gap: 18px; flex-wrap: wrap; border-top: 1px solid var(--line); margin-top: 22px; padding-top: 16px; color: var(--muted); font-size: 13px; }
.dialog-content .button { margin-top: 22px; }

/* ---------- 返回顶部 ---------- */
.back-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 44px; height: 44px;
  border: 0;
  background: var(--ink);
  color: #fff;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .25s, transform .25s var(--ease), background .2s, visibility .25s;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--accent); }

/* ---------- 后台主题颜色控件 ---------- */
.color-field > span { display: flex; align-items: center; gap: 10px; }
.color-field input[type="color"] { width: 48px; height: 34px; padding: 2px; border: 1px solid var(--line); background: var(--white); cursor: pointer; }
.color-field code { color: var(--muted); font-family: var(--mono); font-size: 12px; }

/* ---------- 关键帧 ---------- */
@keyframes rise {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: none; }
}
@keyframes heroZoom {
  from { transform: scale(1.08); }
  to { transform: scale(1); }
}
@keyframes dialogIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 950px) {
  .site-nav { gap: 16px; }
  .about-intro { gap: 40px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .video-layout, .contact-layout { gap: 48px; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .video-rail { grid-template-columns: repeat(3, 1fr); }
  .video-tile:nth-child(n+4) { display: none; }
  .footer-links { gap: 22px; }
}

@media (max-width: 760px) {
  .shell { width: min(calc(100% - 32px), var(--max)); }
  .demo-bar { padding: 6px 16px; gap: 10px; font-size: 10px; }
  .demo-bar span:nth-child(2) { display: none; }
  .header-inner { min-height: 64px; }
  .menu-button { display: block; }
  .site-nav {
    position: fixed;
    inset: 64px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 20px 24px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 14px 30px rgba(26, 26, 26, .08);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 14px 0 !important; border-bottom: 1px solid var(--line); }
  .site-nav a:not(.nav-cta)::after { display: none; }
  .nav-cta { margin-top: 12px; text-align: center; }

  .hero { min-height: 0; }
  .hero-content { padding: 60px 0; }
  .hero h1 { font-size: 38px; }
  .hero-lead { font-size: 15px; margin: 20px 0 26px; }
  .hero-proof { gap: 20px; margin-top: 40px; flex-wrap: wrap; }
  .hero-proof strong { font-size: 24px; }
  .rail-inner { gap: 18px; overflow: auto; white-space: nowrap; }
  .rail-end { display: none; }

  .section { padding: 72px 0; }
  .split-section h2, .section-heading h2, .about-copy h2,
  .video-intro h2, .jobs-layout h2, .contact-layout h2 { font-size: 30px; }
  .about-intro { grid-template-columns: 1fr; gap: 32px; }
  .principle-grid { grid-template-columns: 1fr; margin-top: 60px; }
  .principle-grid article { min-height: 0; padding: 24px; }
  .principle-grid h3 { margin-top: 24px; }
  .section-heading { display: block; margin-bottom: 34px; }
  .section-heading > p { margin-top: 14px; }
  .capability-grid, .product-grid, .cases-grid { grid-template-columns: 1fr; }
  .video-layout { grid-template-columns: 1fr; gap: 36px; }
  .detail-hero { padding: 52px 0 64px; }
  .detail-hero-grid, .detail-content-grid { grid-template-columns: 1fr; gap: 38px; }
  .detail-back { margin-bottom: 28px; }
  .detail-hero h1 { font-size: 38px; }
  .detail-lead { font-size: 15px; }
  .detail-content h2 { font-size: 30px; }
  .detail-info-section, .detail-story-section { padding: 64px 0; }
  .detail-info-grid { grid-template-columns: 1fr; gap: 26px; }
  .detail-reading > h2 { font-size: 30px; }
  .detail-related-item { grid-template-columns: 90px 1fr 22px; gap: 12px; }
  .detail-related-item strong { font-size: 15px; }
  .detail-gallery-grid { grid-template-columns: 1fr; }
  .video-rail { grid-template-columns: repeat(2, 1fr); }
  .video-tile:nth-child(n+5) { display: none; }
  .news-item { grid-template-columns: 84px 1fr 22px; gap: 10px; padding: 18px 0; }
  .news-category { grid-column: 2; }
  .news-title { grid-column: 2; font-size: 15px; }
  .news-excerpt { display: none; }
  .news-arrow { grid-column: 3; grid-row: 1 / 3; }
  .jobs-layout, .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .jobs-list { margin-top: 52px; }
  .job-item { grid-template-columns: 1fr 26px; gap: 14px; }
  .job-meta { grid-column: 1; }
  .contact-form { padding: 24px; }
  .footer-top { display: block; }
  .footer-links { margin-top: 42px; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .footer-bottom { display: block; line-height: 2; }
  .footer-bottom span { display: block; }
  .detail-dialog { max-height: 90vh; overflow: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- 首页参考版式覆盖：白底固定头部 / 项目影像首屏 / 业务展示 ---------- */
body { background: #fff; color: var(--ink); line-height: 1.55; }
.shell { width: min(calc(100% - 48px), 1140px); }
.demo-bar { display: none; }
.site-header { position: sticky; top: 0; height: 70px; background: #fff; backdrop-filter: none; -webkit-backdrop-filter: none; border-bottom: 1px solid #ededed; box-shadow: none; }
.site-header.scrolled { background: rgba(255, 255, 255, .94); border-color: var(--line); box-shadow: 0 5px 18px rgba(8, 46, 97, .08); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.header-inner { height: 70px; min-height: 70px; align-items: center; }
.brand { gap: 10px; min-width: 330px; }
.brand-logo { width: 38px; height: 38px; }
.brand-mark { width: 40px; height: 40px; font-size: 23px; background: var(--accent); }
.brand-mark::after { display: none; }
.brand:hover .brand-mark { background: var(--ink); }
.brand-copy { min-width: 0; }
.brand strong { color: var(--ink); font-size: 17px; line-height: 1.12; letter-spacing: .03em; font-weight: 700; white-space: nowrap; }
.brand small { margin-top: 2px; color: var(--muted); font-family: Arial, Helvetica, sans-serif; font-size: 8.5px; line-height: 1.2; letter-spacing: .02em; white-space: nowrap; }
.header-side { align-self: stretch; display: flex; flex-direction: column; align-items: flex-end; justify-content: center; }
.header-utilities { min-height: 22px; display: flex; align-items: center; gap: 10px; color: var(--muted); font-family: Arial, sans-serif; font-size: 10px; }
.certificate { color: var(--ink); font-size: 9px; font-weight: 700; letter-spacing: .04em; }
.certificate-wide { color: var(--muted); font-size: 8px; font-weight: 400; }
.language { color: #aaa; font-size: 11px; cursor: default; }
.language.active { color: var(--ink); }
.admin-shortcut { margin-left: 5px; padding-left: 10px; border-left: 1px solid var(--line); color: var(--accent); font-size: 10px; font-weight: 700; }
.admin-shortcut:hover { color: var(--ink); }
.detail-admin-entry { color: var(--accent); font-weight: 700; }
.temporary-admin-entry { position: fixed; z-index: 25; left: 24px; bottom: 24px; display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 15px; border: 1px solid var(--accent); background: #fff; color: var(--accent); font-size: 12px; font-weight: 700; box-shadow: 0 6px 16px rgba(8, 46, 97, .12); transition: color .2s, background .2s, border-color .2s; }
.temporary-admin-entry:hover { border-color: var(--ink); background: var(--ink); color: #fff; }
.site-nav { gap: 0; height: 42px; font-size: 14px; color: var(--ink); }
.nav-item { position: relative; display: flex; height: 42px; align-items: stretch; }
.site-nav a { padding: 10px 13px; display: flex; align-items: center; white-space: nowrap; }
.site-nav a:not(.nav-cta)::after { display: none; }
/* 下拉菜单仅保留交互，不使用星号、箭头等文字装饰。 */
.site-nav .nav-item.has-menu > a::before,
.site-nav .nav-item.has-menu > a::after { content: none !important; display: none !important; }
.site-nav a:not(.nav-cta):hover { color: var(--accent); }
.nav-item > a { transition: color .2s, background .2s; }
.nav-item:hover > a, .nav-item:focus-within > a { color: #fff !important; background: var(--accent); }
.nav-panel { position: absolute; top: 42px; left: 0; z-index: 35; width: 146px; padding: 8px 0; background: #fff; border-top: 2px solid var(--accent); box-shadow: 0 10px 20px rgba(0, 0, 0, .12); opacity: 0; visibility: hidden; transform: translateY(-6px); transition: opacity .18s, transform .18s, visibility .18s; }
.nav-panel a { padding: 9px 15px; font-size: 13px; color: var(--muted); }
.nav-panel a:hover { background: var(--soft); color: var(--accent) !important; }
.nav-item.has-menu:hover .nav-panel, .nav-item.has-menu:focus-within .nav-panel { opacity: 1; visibility: visible; transform: none; }

.reference-hero { padding: 0 0 44px; background: #fff; }
.hero-frame { position: relative; width: min(calc(100% - 48px), 1140px); height: 641px; margin: 0 auto; overflow: hidden; background: var(--ink); }
.hero-frame::after { content: ""; position: absolute; inset: 0; z-index: 1; background: rgba(0, 0, 0, .18); pointer-events: none; }
.hero-frame img { position: relative; z-index: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; transform: scale(1.01); transition: transform 1.2s var(--ease); }
.hero-frame:hover img { transform: scale(1.04); }
.hero-overlay { position: absolute; z-index: 2; left: 58px; bottom: 54px; max-width: 610px; color: #fff; text-shadow: 0 2px 18px rgba(0, 0, 0, .5); }
.hero-overlay h1 { margin: 0; color: inherit; font-size: 42px; font-weight: 700; line-height: 1.25; letter-spacing: 0; }
.hero-overlay p { max-width: 560px; margin: 16px 0 0; color: inherit; font-size: 18px; line-height: 1.8; letter-spacing: 0; }
.hero-links { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 26px; }
.hero-certifications-link, .hero-contact-link { display: inline-flex; align-items: center; gap: 14px; padding: 12px 22px; border: 1px solid rgba(255, 255, 255, .88); color: #fff; font-size: 16px; font-weight: 700; line-height: 1.3; letter-spacing: 0; text-shadow: none; transition: background .2s, border-color .2s, color .2s; }
.hero-certifications-link { border-color: var(--accent); background: var(--accent); }
.hero-certifications-link:hover, .hero-certifications-link:focus-visible, .hero-contact-link:hover, .hero-contact-link:focus-visible { border-color: #fff; background: #fff; color: var(--accent); }
.hero-certifications-link span, .hero-contact-link span { font-size: 20px; line-height: 1; transition: transform .2s var(--ease); }
.hero-certifications-link:hover span, .hero-certifications-link:focus-visible span, .hero-contact-link:hover span, .hero-contact-link:focus-visible span { transform: translateX(3px); }

.home-about { padding: 68px 0 94px; background: #fff; border-top: 1px solid var(--line); }
.home-about-heading { margin-bottom: 62px; text-align: center; }
.home-about-heading h1 { margin: 0; color: var(--ink); font-size: 34px; line-height: 1.25; font-weight: 700; letter-spacing: 0; }
.home-about-heading p { margin: 9px 0 0; color: var(--accent); font-family: Arial, sans-serif; font-size: 18px; line-height: 1; }
.home-about-content { display: grid; grid-template-columns: 1.08fr .92fr; gap: 50px; align-items: center; }
.home-about-image { overflow: hidden; background: var(--ink); }
.home-about-image img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; transition: transform .6s var(--ease); }
.home-about-image:hover img { transform: scale(1.025); }
.home-about-copy { color: var(--ink); font-size: 17px; line-height: 1.9; }
.home-about-copy p { margin: 0 0 20px; }
.home-about-copy a { display: inline-block; margin-top: 8px; color: var(--ink); font-size: 13px; padding-bottom: 5px; border-bottom: 1px solid var(--muted); transition: color .2s, border-color .2s; }
.home-about-copy a:hover { color: var(--accent); border-color: var(--accent); }

.service-gallery { padding: 0 0 94px; background: #fff; }
.service-gallery-rail { position: relative; }
.service-gallery-grid { display: flex; gap: 2px; overflow-x: auto; padding-bottom: 12px; background: #fff; scroll-snap-type: x proximity; scrollbar-color: var(--accent) var(--soft); scrollbar-width: thin; cursor: grab; }
.service-gallery-grid.is-dragging { cursor: grabbing; user-select: none; }
.service-rail-control { position: absolute; z-index: 3; top: calc(50% - 18px); width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(0,0,0,.18); border-radius: 50%; color: var(--ink); background: rgba(255,255,255,.95); box-shadow: 0 4px 12px rgba(0,0,0,.12); font-size: 20px; line-height: 1; transition: opacity .2s, color .2s, background .2s, transform .2s; }
.service-rail-control:hover:not(:disabled) { color: #fff; background: var(--accent); transform: scale(1.06); }
.service-rail-control:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.service-rail-control:disabled { pointer-events: none; opacity: 0; }
.service-rail-prev { left: 14px; }
.service-rail-next { right: 14px; }
.service-gallery-grid::-webkit-scrollbar { height: 7px; }
.service-gallery-grid::-webkit-scrollbar-track { background: var(--soft); }
.service-gallery-grid::-webkit-scrollbar-thumb { background: var(--accent); }
.service-gallery-card { position: relative; flex: 0 0 min(33.333%, 380px); display: block; min-height: 335px; overflow: hidden; background: var(--ink); color: #fff; scroll-snap-align: start; }
.service-gallery-card img { width: 100%; height: 100%; min-height: 335px; object-fit: cover; opacity: .88; transition: transform .65s var(--ease), opacity .3s; }
.service-gallery-shade { position: absolute; inset: 35% 0 0; background: linear-gradient(transparent, rgba(0, 0, 0, .78)); pointer-events: none; }
.service-gallery-card > div { position: absolute; z-index: 1; right: 28px; bottom: 24px; left: 28px; }
.service-gallery-card small { display: block; margin-bottom: 8px; color: rgba(255,255,255,.78); font: 10px var(--mono); letter-spacing: .12em; }
.service-gallery-card h2 { margin: 0; color: #fff; font-size: 26px; font-weight: 500; line-height: 1.25; letter-spacing: 0; }
.service-gallery-card b { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; color: #fff; font-size: 12px; font-weight: 400; }
.service-gallery-card i { width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.8); border-radius: 50%; font-style: normal; font-size: 14px; transition: background .25s, color .25s, transform .25s var(--ease); }
.service-gallery-card:hover img { transform: scale(1.05); opacity: 1; }
.service-gallery-card:hover i { background: #fff; color: var(--accent); transform: translateX(3px); }

.home-products { padding: 56px 0 94px; background: #fff; }
.product-showcase-heading { display: grid; grid-template-columns: 230px 1fr auto; align-items: end; gap: 30px; margin-bottom: 44px; }
.product-showcase-heading p, .service-band-intro > p, .about-strip p, .home-section-heading p, .contact-copy > p { margin: 0 0 12px; color: var(--accent); font-size: 13px; font-weight: 700; letter-spacing: .1em; }
.product-showcase-heading h1 { margin: 0; font-size: 32px; line-height: 1.36; font-weight: 500; letter-spacing: 0; }
.product-showcase-heading > a, .home-section-heading > a, .service-band-intro > a, .about-strip a { color: var(--ink); font-size: 13px; padding-bottom: 5px; border-bottom: 1px solid var(--muted); white-space: nowrap; transition: color .2s, border-color .2s; }
.product-showcase-heading > a:hover, .home-section-heading > a:hover, .service-band-intro > a:hover, .about-strip a:hover { color: var(--accent); border-color: var(--accent); }
.product-showcase-main { display: grid; grid-template-columns: 300px 1fr; min-height: 390px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.product-tabs { border-right: 1px solid var(--line); }
.product-tab { display: grid; grid-template-columns: 42px 1fr 18px; align-items: center; width: 100%; min-height: 97px; padding: 0 24px; color: var(--ink); text-align: left; background: #fff; border: 0; border-bottom: 1px solid var(--line); transition: background .2s, color .2s; }
.product-tab:last-child { border-bottom: 0; }
.product-tab small { color: var(--muted); font-family: var(--mono); font-size: 11px; }
.product-tab strong { font-size: 17px; font-weight: 500; }
.product-tab span { color: var(--muted); font-size: 19px; font-weight: 300; }
.product-tab:hover, .product-tab.active { background: var(--accent); color: #fff; }
.product-tab.active small, .product-tab.active span { color: rgba(255,255,255,.78); }
.product-feature { position: relative; overflow: hidden; cursor: pointer; background: #111; }
.product-feature img { width: 100%; height: 100%; object-fit: cover; opacity: .84; transition: transform .6s var(--ease), opacity .3s; }
.product-feature:hover img { transform: scale(1.035); opacity: .95; }
.product-feature::after { content: ""; position: absolute; inset: auto 0 0; height: 55%; background: linear-gradient(transparent, rgba(0,0,0,.72)); }
.product-feature-copy { position: absolute; z-index: 1; left: 36px; right: 36px; bottom: 32px; color: #fff; }
.product-feature-copy p { margin: 0 0 8px; color: #fff; font-size: 11px; letter-spacing: .16em; }
.product-feature-copy h3 { margin: 0 0 8px; color: #fff; font-size: 26px; font-weight: 500; }
.product-feature-copy span { display: block; max-width: 490px; color: rgba(255,255,255,.82); font-size: 14px; }
.product-feature-copy b { display: inline-block; margin-top: 17px; color: #fff; font-size: 13px; font-weight: 500; }

.service-band { padding: 88px 0; background: var(--ink); color: #fff; }
.service-band-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 76px; }
.service-band-intro > p { color: #fff; }
.service-band-intro h2 { margin: 0; color: #fff; font-size: 35px; font-weight: 400; line-height: 1.35; letter-spacing: 0; }
.service-band-intro > a { display: inline-block; margin-top: 46px; color: #fff; border-color: rgba(255,255,255,.65); }
.service-band-list { border-top: 1px solid rgba(255,255,255,.45); }
.service-band-item { display: grid; grid-template-columns: 54px 1fr 28px; align-items: center; min-height: 78px; border-bottom: 1px solid rgba(255,255,255,.3); color: #fff; transition: padding-left .25s, background .25s; }
.service-band-item:hover { padding-left: 12px; background: rgba(255,255,255,.06); }
.service-band-item small { color: rgba(255,255,255,.6); font-family: var(--mono); font-size: 11px; }
.service-band-item span { font-size: 18px; }
.service-band-item b { color: var(--accent); font-size: 18px; font-weight: 400; }

.about-strip { padding: 82px 0; background: var(--soft); }
.about-strip-layout { display: grid; grid-template-columns: 1fr .72fr; gap: 100px; align-items: end; }
.about-strip h2 { margin: 0; font-size: 30px; font-weight: 400; line-height: 1.42; letter-spacing: 0; }
.about-strip-layout > div:last-child > p { margin: 0; color: var(--muted); font-size: 15px; line-height: 2; letter-spacing: 0; }
.about-strip a { display: inline-block; margin-top: 26px; }

.product-system-section { padding: 92px 0 98px; background: #fff; }
.home-cases, .home-videos { padding: 92px 0 98px; background: var(--soft); }
.home-certifications { padding: 92px 0 98px; background: var(--soft); }
.case-section-heading { margin: 0 0 62px; text-align: center; }
.case-section-heading h2 { margin: 0; color: var(--ink); font-size: 34px; line-height: 1.35; font-weight: 700; letter-spacing: 0; }
.case-section-heading p { margin: 8px 0 0; color: var(--accent); font-size: 15px; font-weight: 500; }
.home-section-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 42px; }
.home-section-heading p { margin-bottom: 10px; }
.home-section-heading h2 { margin: 0; color: var(--ink); font-size: 34px; line-height: 1.35; font-weight: 400; letter-spacing: 0; }
.case-stage, .product-stage, .video-stage { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px 24px; }
.certification-gallery-rail { position: relative; }
.certification-gallery { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; overflow: visible; }
.certification-gallery-card { min-width: 0; overflow: hidden; background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--accent); }
.certification-image-frame { display: grid; place-items: center; aspect-ratio: 1 / 1.05; min-height: 0; overflow: hidden; padding: 12px; background: #fff; border-bottom: 1px solid var(--line); }
.certification-image-frame img { display: block; width: 100%; height: 100%; max-width: 100%; max-height: 100%; min-width: 0; min-height: 0; object-fit: contain; }
.certification-gallery-copy { min-height: 64px; padding: 10px 12px 12px; }
.certification-gallery-copy small { display: block; margin-bottom: 9px; color: var(--accent); font-size: 12px; }
.certification-gallery-copy h3 { margin: 0; color: var(--ink); font-size: 13px; line-height: 1.45; font-weight: 600; }
.certification-rail-control { position: absolute; z-index: 1; top: 45%; display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; transition: background .2s, color .2s, border-color .2s; }
.certification-rail-control:hover:not(:disabled) { border-color: var(--accent); background: var(--accent); color: #fff; }
.certification-rail-control:disabled { opacity: .35; cursor: not-allowed; }
.certification-rail-prev { left: 0; }
.certification-rail-next { right: 0; }
.case-stage-card, .product-stage-card, .video-stage-card { position: relative; display: block; width: 100%; aspect-ratio: 1.55 / 1; padding: 0; border: 0; overflow: hidden; background: var(--ink); color: inherit; cursor: pointer; text-align: left; }
.case-stage-card img, .product-stage-card img, .video-stage-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.case-stage-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; padding: 26px 28px; color: #fff; background: color-mix(in srgb, var(--accent) 84%, transparent); opacity: 0; transition: opacity .25s ease; }
.case-stage-card:hover img, .case-stage-card:focus-visible img, .product-stage-card:hover img, .product-stage-card:focus-visible img, .video-stage-card:hover img, .video-stage-card:focus-visible img { transform: scale(1.035); }
.case-stage-card:hover .case-stage-overlay, .case-stage-card:focus-visible .case-stage-overlay, .product-stage-card:hover .case-stage-overlay, .product-stage-card:focus-visible .case-stage-overlay, .video-stage-card:hover .case-stage-overlay, .video-stage-card:focus-visible .case-stage-overlay { opacity: 1; }
.case-stage-card:focus-visible, .product-stage-card:focus-visible, .video-stage-card:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
.case-stage-card h3, .product-stage-card h3, .video-stage-card h3 { margin: 0 0 17px; color: #fff; font-size: 20px; line-height: 1.42; font-weight: 600; }
.case-stage-card dl, .product-stage-card dl, .video-stage-card dl { display: grid; gap: 4px; margin: 0; font-size: 14px; line-height: 1.45; }
.case-stage-card dl div, .product-stage-card dl div, .video-stage-card dl div { display: flex; gap: 8px; }
.case-stage-card dt, .case-stage-card dd, .product-stage-card dt, .product-stage-card dd, .video-stage-card dt, .video-stage-card dd { margin: 0; }
.case-stage-card dt::after, .product-stage-card dt::after, .video-stage-card dt::after { content: "："; }
.case-stage-card b, .product-stage-card b, .video-stage-card b { display: inline-flex; align-items: center; gap: 7px; margin-top: 26px; color: #fff; font-size: 14px; font-weight: 500; }
.case-stage-card b span, .product-stage-card b span, .video-stage-card b span { font-size: 16px; }
.gaoer-video-dialog { position: fixed; z-index: 1000; inset: 0; display: grid; place-items: center; padding: 24px; background: rgba(7, 23, 42, .78); }
.gaoer-video-dialog[hidden] { display: none; }
.gaoer-video-dialog__panel { width: min(1100px, 100%); max-height: 92vh; overflow: hidden; background: #07192f; box-shadow: 0 24px 70px rgba(0,0,0,.42); }
.gaoer-video-dialog__head { display: flex; align-items: center; justify-content: space-between; min-height: 54px; padding: 0 17px 0 20px; color: #fff; }
.gaoer-video-dialog__head strong { font-size: 15px; font-weight: 600; }
.gaoer-video-dialog__close { display: grid; width: 32px; height: 32px; padding: 0; place-items: center; border: 1px solid rgba(255,255,255,.44); background: transparent; color: #fff; font-size: 22px; cursor: pointer; }
.gaoer-video-dialog__close:hover, .gaoer-video-dialog__close:focus { border-color: #fff; background: rgba(255,255,255,.12); outline: 0; }
.gaoer-video-dialog__player { display: block; width: 100%; max-height: calc(92vh - 54px); background: #000; }

.video-category-filter { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: -24px 0 36px; }
.video-category-filter button { min-height: 36px; padding: 0 14px; border: 1px solid var(--line); background: #fff; color: var(--ink); font-size: 13px; cursor: pointer; transition: color .2s, border-color .2s, background .2s; }
.video-category-filter button:hover, .video-category-filter button.active { border-color: var(--accent); background: var(--accent); color: #fff; }
.home-news { padding: 88px 0; background: #fff; }
.home-news .home-section-heading { margin-bottom: 26px; }
.jobs-section { padding: 88px 0 96px; background: #fff; border-top: 0; }
.jobs-section-heading { margin-bottom: 42px; }
.jobs-section-heading h2 { margin: 0; color: var(--ink); font-size: 34px; line-height: 1.3; font-weight: 700; }
.jobs-section .jobs-list { margin-top: 0; border-top-color: var(--line); }
.jobs-section .job-item { grid-template-columns: 1fr 230px 30px; padding: 20px 0; }
.jobs-section .job-item:hover { padding-left: 12px; padding-right: 12px; }
.jobs-empty { padding: 28px 0; color: var(--muted); }
.jobs-empty h3 { margin: 0 0 6px; color: var(--ink); font-size: 18px; }
.jobs-empty p { margin: 0; font-size: 14px; }

.video-news-section { padding: 88px 0; background: var(--soft); }
.video-news-layout { display: grid; grid-template-columns: 1.08fr .92fr; gap: 72px; }
.home-section-heading.compact { margin-bottom: 26px; }
.home-section-heading.compact h2 { font-size: 27px; }
.home-video-card { position: relative; display: block; background: #111; overflow: hidden; cursor: pointer; }
.home-video-card img { width: 100%; aspect-ratio: 16 / 8.7; object-fit: cover; opacity: .82; transition: transform .6s var(--ease); }
.home-video-card:hover img { transform: scale(1.03); }
.home-video-card > div { position: absolute; z-index: 1; left: 24px; bottom: 20px; color: #fff; }
.home-video-card small { font: 10px var(--mono); color: rgba(255,255,255,.72); letter-spacing: .1em; }
.home-video-card h3 { margin: 6px 0 0; color: #fff; font-size: 19px; font-weight: 500; }
.video-play { position: absolute; z-index: 1; left: 24px; top: 22px; width: 42px; height: 42px; padding-left: 2px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.9); border-radius: 50%; color: #fff; font-size: 13px; }
.news-list { border-top: 1px solid var(--ink); }
.news-row { display: grid; grid-template-columns: 90px 1fr 18px; align-items: center; gap: 16px; min-height: 76px; border-bottom: 1px solid var(--line); cursor: pointer; transition: padding-left .2s, background .2s; }
.news-row:hover { padding-left: 8px; background: rgba(255,255,255,.55); }
.news-row time { color: var(--muted); font: 11px var(--mono); }
.news-row small { display: block; margin-bottom: 4px; color: var(--accent); font-size: 11px; }
.news-row strong { display: block; color: var(--ink); font-size: 14px; font-weight: 500; line-height: 1.45; }
.news-row b { color: var(--accent); font-size: 17px; font-weight: 400; }

.contact-section { padding: 36px 0 96px; background: #fff; border-top: 0; }
.contact-section-heading { margin-bottom: 38px; text-align: center; }
.contact-section-heading h2 { margin: 0; color: var(--ink); font-size: 34px; line-height: 1.3; font-weight: 700; letter-spacing: 0; }
.contact-section-heading p { margin: 10px 0 0; color: var(--accent); font-family: Arial, Helvetica, sans-serif; font-size: 16px; font-weight: 500; letter-spacing: .02em; }
.contact-layout { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 76px; align-items: start; }
.contact-copy { max-width: 560px; padding-left: 2px; }
.contact-info-list { display: grid; gap: 22px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.6; }
.contact-info-list div { display: grid; grid-template-columns: 58px 1fr; gap: 0; }
.contact-info-list dt, .contact-info-list dd { margin: 0; }
.contact-info-list dt { color: var(--muted); }
.contact-info-list dd, .contact-info-list a { color: var(--muted); }
.contact-info-list a:hover { color: var(--accent); }
.contact-map { display: block; overflow: hidden; background: var(--soft); }
.contact-map img { width: 100%; aspect-ratio: 1.62 / 1; object-fit: cover; transition: transform .45s var(--ease); }
.contact-map:hover img { transform: scale(1.025); }
.contact-map:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.contact-panel { padding: 30px 34px 34px; background: var(--soft); border-top: 3px solid var(--accent); }
.contact-panel > p { margin: 0 0 24px; color: var(--muted); font-size: 14px; line-height: 1.8; }
.contact-form { padding: 0; border: 0; border-top: 1px solid var(--line); background: transparent; }
.contact-form label { margin: 14px 0 0; color: var(--muted); font-size: 11px; }
.contact-form input, .contact-form select, .contact-form textarea { padding: 7px 0; font-size: 14px; }
.submit-arrow { display: flex; align-items: center; justify-content: space-between; width: 100%; margin-top: 20px; padding: 12px 15px; border: 0; color: #fff; background: var(--accent); font-size: 14px; font-weight: 700; transition: background .2s; }
.submit-arrow:hover { background: var(--ink); }

.site-footer { padding: 58px 0 18px; background: var(--ink); color: rgba(255,255,255,.62); border: 0; }
.footer-top { align-items: flex-start; gap: 60px; }
.site-footer .brand strong { color: #fff; }
.site-footer .brand small { color: rgba(255,255,255,.5); }
.site-footer .brand-logo { background: #fff; border-radius: 50%; }
.site-footer .brand-mark { background: var(--accent); }
.footer-note { margin: 26px 0 0; color: rgba(255,255,255,.55); font-size: 12px; line-height: 1.8; }
.footer-links { grid-template-columns: repeat(4, 124px); gap: 34px; }
.footer-links b { color: #fff; font-size: 13px; font-weight: 500; letter-spacing: .06em; }
.footer-links a { color: rgba(255,255,255,.58); font-size: 12px; }
.footer-links a:hover { color: #fff; }
.footer-bottom { margin-top: 46px; border-color: rgba(255,255,255,.2); color: rgba(255,255,255,.42); }

@media (max-width: 950px) {
  .header-utilities { display: none; }
  .header-side { justify-content: center; }
  .site-nav { font-size: 13px; }
  .site-nav a { padding-left: 9px; padding-right: 9px; }
  .hero-frame { height: 500px; }
  .product-showcase-heading { grid-template-columns: 180px 1fr auto; }
  .service-band-layout, .about-strip-layout, .contact-layout { gap: 50px; }
  .video-news-layout { gap: 42px; }
  .footer-links { grid-template-columns: repeat(4, 104px); gap: 20px; }
  .certification-gallery { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .site-header, .header-inner { height: 64px; min-height: 64px; }
  .brand { min-width: 0; gap: 8px; }
  .brand strong { font-size: 14px; }
  .brand small { margin-top: 2px; font-size: 6.5px; letter-spacing: 0; }
  .brand-logo { width: 36px; height: 36px; }
  .menu-button { display: block; }
  .site-nav { position: fixed; inset: 64px 0 auto 0; display: none; height: auto; max-height: calc(100vh - 64px); overflow-y: auto; padding: 0 16px 16px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 12px 20px rgba(8,46,97,.1); }
  .site-nav.open { display: block; }
  .nav-item { display: block; height: auto; border-bottom: 1px solid #eee; }
  .site-nav a { padding: 14px 4px; justify-content: space-between; }
  .nav-item:hover > a, .nav-item:focus-within > a { background: transparent; color: var(--accent) !important; }
  .nav-panel { position: static; display: none; width: auto; padding: 0 0 8px 16px; border-top: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .nav-item.has-menu:hover .nav-panel, .nav-item.has-menu:focus-within .nav-panel { display: block; }
  .nav-panel a { padding: 8px 4px; color: var(--muted); }
  .footer-top { display: block; }
  .footer-links { margin-top: 38px; grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
}

@media (max-width: 760px) {
  .shell, .hero-frame { width: min(calc(100% - 32px), 1140px); }
  .site-header, .header-inner { height: 64px; min-height: 64px; }
  .brand { min-width: 0; gap: 8px; }
  .brand strong { font-size: 14px; }
  .brand small { margin-top: 2px; font-size: 6.5px; letter-spacing: 0; }
  .brand-mark { width: 34px; height: 34px; font-size: 19px; }
  .brand-logo { width: 36px; height: 36px; }
  .temporary-admin-entry { left: 16px; bottom: 16px; min-height: 40px; padding: 0 12px; }
  .menu-button { display: block; }
  .site-nav { position: fixed; inset: 64px 0 auto 0; display: none; height: auto; max-height: calc(100vh - 64px); overflow-y: auto; padding: 0 16px 16px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 12px 20px rgba(8,46,97,.1); }
  .site-nav.open { display: block; }
  .nav-item { display: block; height: auto; border-bottom: 1px solid #eee; }
  .site-nav a { padding: 14px 4px; justify-content: space-between; }
  .nav-item:hover > a, .nav-item:focus-within > a { background: transparent; color: var(--accent) !important; }
  .nav-panel { position: static; display: none; width: auto; padding: 0 0 8px 16px; border-top: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
  .nav-item.has-menu:hover .nav-panel, .nav-item.has-menu:focus-within .nav-panel { display: block; }
  .nav-panel a { padding: 8px 4px; color: var(--muted); }
  .reference-hero { padding-bottom: 32px; }
  .hero-frame { height: 420px; }
  .hero-overlay { right: 24px; bottom: 30px; left: 24px; max-width: none; }
  .hero-overlay h1 { font-size: 30px; line-height: 1.35; }
  .hero-overlay p { margin-top: 12px; font-size: 16px; line-height: 1.7; }
  .hero-links { gap: 12px; margin-top: 20px; }
  .hero-certifications-link, .hero-contact-link { padding: 11px 18px; font-size: 15px; }
  .home-about, .home-products, .service-band, .about-strip, .service-gallery, .product-system-section, .home-cases, .home-videos, .home-certifications, .home-news, .jobs-section, .video-news-section, .contact-section { padding: 58px 0; }
  .home-about-heading { margin-bottom: 36px; }
  .home-about-heading h1 { font-size: 28px; }
  .home-about-heading p { font-size: 15px; }
  .home-about-content { grid-template-columns: 1fr; gap: 28px; }
  .home-about-copy { font-size: 15px; line-height: 1.85; }
  .service-gallery { padding-top: 0; }
  .service-rail-control { display: none; }
  .service-gallery-grid { gap: 10px; padding-bottom: 10px; }
  .service-gallery-card { flex-basis: 82vw; }
  .service-gallery-card, .service-gallery-card img { min-height: 260px; }
  .service-gallery-card > div { right: 20px; bottom: 18px; left: 20px; }
  .service-gallery-card h2 { font-size: 23px; }
  .product-showcase-heading { display: block; margin-bottom: 28px; }
  .product-showcase-heading h1, .service-band-intro h2, .about-strip h2, .home-section-heading h2, .contact-copy h2 { font-size: 26px; }
  .product-showcase-heading > a { display: inline-block; margin-top: 20px; }
  .product-showcase-main { grid-template-columns: 1fr; min-height: 0; }
  .product-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-right: 0; border-bottom: 1px solid var(--line); }
  .product-tab { grid-template-columns: 1fr; min-height: 72px; padding: 12px; gap: 2px; border-right: 1px solid var(--line); border-bottom: 0; }
  .product-tab:last-child { border-right: 0; }
  .product-tab strong { font-size: 14px; }
  .product-tab span { display: none; }
  .product-feature { min-height: 320px; }
  .product-feature-copy { left: 20px; right: 20px; bottom: 20px; }
  .product-feature-copy h3 { font-size: 22px; }
  .service-band-layout, .about-strip-layout, .video-news-layout, .contact-layout { grid-template-columns: 1fr; gap: 36px; }
  .contact-section { padding: 58px 0 64px; }
  .contact-section-heading { margin-bottom: 32px; }
  .contact-section-heading h2 { font-size: 28px; }
  .contact-copy { max-width: none; }
  .contact-info-list { gap: 16px; font-size: 15px; }
  .service-band-intro > a { margin-top: 26px; }
  .about-strip-layout > div:last-child > p { font-size: 14px; }
  .home-section-heading { margin-bottom: 26px; }
  .jobs-section-heading { display: block; margin-bottom: 26px; }
  .jobs-section-heading h2 { font-size: 28px; }
  .jobs-section .job-item { grid-template-columns: 1fr 26px; gap: 14px; }
  .jobs-section .job-meta { grid-column: 1; }
  .case-section-heading { margin-bottom: 34px; }
  .case-section-heading h2 { font-size: 28px; }
  .case-stage, .product-stage, .video-stage { height: auto; grid-template-columns: 1fr; gap: 12px; }
  .certification-gallery-rail { padding: 0; }
  .certification-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .certification-image-frame { aspect-ratio: 1 / 1.05; padding: 10px; }
  .certification-rail-control { display: none; }
  .case-stage-card, .product-stage-card, .video-stage-card { min-height: 246px; }
  .case-stage-overlay { position: static; min-height: 168px; padding: 22px; background: var(--accent); opacity: 1; }
  .case-stage-card, .product-stage-card, .video-stage-card { display: grid; grid-template-rows: 220px auto; aspect-ratio: auto; }
  .case-stage-card img, .product-stage-card img, .video-stage-card img { grid-area: 1 / 1; }
  .case-stage-overlay { grid-area: 2 / 1; }
  .video-news-layout { gap: 56px; }
  .contact-details { margin-top: 32px; }
  .contact-panel { padding: 22px; }
  .footer-top { display: block; }
  .footer-links { margin-top: 38px; grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .footer-bottom { margin-top: 34px; }
}