/* ============================================================
   沈阳晋凯亿盛机电设备有限公司 · V2 官网样式
   设计风格：机电行业国际风 · 工业深蓝 + 钢蓝 + 工业橙
   响应式：移动优先 (Mobile First)
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --c-navy:   #0E2E4F;   /* 主色 工业深蓝 */
  --c-navy-2: #143B63;
  --c-blue:   #1B6CA8;   /* 强调蓝 */
  --c-blue-l: #E7F1F9;
  --c-orange: #F5A623;   /* 工业橙 CTA */
  --c-orange-d:#D98C0E;
  --c-bg:     #F5F7FA;   /* 浅灰背景 */
  --c-surface:#FFFFFF;
  --c-text:   #1F2933;
  --c-muted:  #5B6776;
  --c-border: #E2E8F0;
  --radius:   10px;
  --radius-s: 6px;
  --shadow:   0 6px 22px rgba(14,46,79,.08);
  --shadow-h: 0 12px 30px rgba(14,46,79,.16);
  --maxw:     1200px;
  --header-h: 84px;
  --tr:       .25s ease;
}

/* ---------- Reset ---------- */
*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; font-family: "PingFang SC","Microsoft YaHei","Hiragino Sans GB",
        -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color: var(--c-text); background: var(--c-bg); line-height: 1.75; font-size: 16px;
  overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-blue); text-decoration: none; transition: color var(--tr); }
a:hover { color: var(--c-orange); }
h1,h2,h3,h4 { margin: 0 0 .6em; line-height: 1.3; color: var(--c-navy); font-weight: 700; }
p { margin: 0 0 1em; }
ul { margin: 0 0 1em; padding-left: 1.2em; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 按钮 ---------- */
.btn { display: inline-block; padding: 12px 28px; border-radius: var(--radius-s);
  font-size: 15px; font-weight: 600; cursor: pointer; border: 2px solid transparent;
  transition: all var(--tr); }
.btn--primary { background: var(--c-orange); color: #fff; border-color: var(--c-orange); }
.btn--primary:hover { background: var(--c-orange-d); border-color: var(--c-orange-d); color:#fff; }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }
.btn--ghost:hover { background: rgba(255,255,255,.12); color:#fff; border-color:#fff; }
.btn--line { background: #fff; color: var(--c-navy); border-color: var(--c-border); }
.btn--line:hover { border-color: var(--c-blue); color: var(--c-blue); }

/* ---------- 顶部 Header / 导航 ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(14,46,79,.97);
  backdrop-filter: blur(6px); box-shadow: 0 2px 12px rgba(0,0,0,.12); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: var(--header-h); max-width: 1380px; margin: 0 auto; padding: 0 24px; }

/* Logo + 公司名组合 */
.logo { display: flex; align-items: center; gap: 14px; color: #fff; flex-shrink: 0; }
.logo__img { height: 48px; width: auto; background: #fff; padding: 4px 6px;
  border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,.25); object-fit: contain; flex-shrink: 0; }
.logo__divider { width: 1px; height: 38px; background: rgba(255,255,255,.22); flex-shrink: 0; }
.logo__text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.logo__name { font-size: 19px; font-weight: 700; color: #fff; letter-spacing: 1px;
  white-space: nowrap; line-height: 1.3; }
.logo__sub  { font-size: 10px; color: #8FA6BD; font-weight: 500; letter-spacing: .8px;
  white-space: nowrap; line-height: 1.4; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px;
  width: 44px; height: 44px; flex-shrink: 0; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; margin: 4px auto;
  transition: var(--tr); }
.nav { display: flex; align-items: center; }
.nav__list { display: flex; list-style: none; margin: 0; padding: 0; gap: 2px; }
.nav__item { position: relative; }
.nav__link { position: relative; display: block; padding: 10px 13px; color: #D7E3F0;
  font-size: 15px; white-space: nowrap; transition: color var(--tr); }
.nav__link::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 5px;
  height: 2px; border-radius: 2px; background: var(--c-orange); transform: scaleX(0);
  transform-origin: center; transition: transform var(--tr); }
.nav__link:hover { color: #fff; }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.nav__link.is-active { color: #fff; font-weight: 600; }

/* 移动端下拉菜单附加项：电话 / 获取方案（桌面端隐藏） */
.nav__extra { display: none; }
.nav__link--tel { display: flex; align-items: center; gap: 10px; }
.nav__link--tel svg { width: 18px; height: 18px; color: var(--c-orange); flex-shrink: 0; }

/* 导航右侧：电话 + 获取方案 */
.header-cta { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.header-phone { display: flex; align-items: center; gap: 9px; color: #fff; }
.header-phone:hover { color: #fff; }
.header-phone svg { width: 20px; height: 20px; color: var(--c-orange); flex-shrink: 0; }
.header-phone__txt small { display: block; font-size: 11px; color: #9FB4CC;
  line-height: 1.3; letter-spacing: 1px; }
.header-phone__txt b { display: block; font-size: 16px; line-height: 1.3; letter-spacing: .5px; }
.header-btn { background: var(--c-orange); color: #fff; font-size: 14px; font-weight: 600;
  padding: 10px 20px; border-radius: var(--radius-s); transition: all var(--tr); white-space: nowrap; }
.header-btn:hover { background: var(--c-orange-d); color: #fff; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 460px; display: flex; align-items: center;
  color: #fff; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.hero__bg::after { content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8,24,42,.86) 0%, rgba(8,24,42,.55) 55%, rgba(8,24,42,.25) 100%); }
.hero__inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto;
  padding: 70px 20px; width: 100%; }
.hero__title { font-size: clamp(28px, 5vw, 46px); margin-bottom: 18px; color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,.4); }
.hero__subtitle { font-size: clamp(15px, 2.4vw, 19px); max-width: 620px; color: #EAF1F8; margin-bottom: 30px; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__dots { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%);
  z-index: 3; display: flex; gap: 8px; }
.hero__dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.45);
  cursor: pointer; transition: var(--tr); }
.hero__dot.is-active { background: var(--c-orange); width: 26px; border-radius: 6px; }

/* ---------- 内页小 Banner ---------- */
.page-banner { position: relative; padding: 56px 0; color: #fff; background-size: cover;
  background-position: center; }
.page-banner::after { content:""; position:absolute; inset:0;
  background: linear-gradient(90deg, rgba(8,24,42,.82), rgba(8,24,42,.45)); }
.page-banner__inner { position: relative; z-index: 2; max-width: var(--maxw); margin:0 auto; padding:0 20px; }
.page-banner__title { font-size: clamp(24px,4vw,36px); margin: 0 0 8px; color: #fff; }
.page-banner__crumb { font-size: 13px; color: #C9D8E8; }
.page-banner__crumb a { color: #C9D8E8; }

/* ---------- 区块 ---------- */
.section { padding: 64px 0; }
.section--alt { background: #fff; }
.section__head { text-align: center; max-width: 760px; margin: 0 auto 44px; }
.section__kicker { display:inline-block; color: var(--c-orange); font-weight:700; font-size:14px;
  letter-spacing: 2px; margin-bottom: 10px; }
.section__title { font-size: clamp(24px,3.4vw,34px); }
.section__desc { color: var(--c-muted); font-size: 16px; }

/* ---------- 卡片网格 ---------- */
.card-grid { display: grid; gap: 24px; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); }
.card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform var(--tr), box-shadow var(--tr);
  display: flex; flex-direction: column; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-h); }
.card__media { aspect-ratio: 16/10; background: linear-gradient(135deg,var(--c-navy),var(--c-blue));
  display: grid; place-items: center; color: #fff; overflow: hidden; }
.card__media svg { width: 64px; height: 64px; opacity: .9; }
.card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card__body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card__title { font-size: 19px; }
.card__text { color: var(--c-muted); font-size: 14.5px; flex: 1; }
.card__link { margin-top: 14px; font-weight: 600; color: var(--c-blue); display:inline-flex; align-items:center; gap:6px; }
.card__link::after { content: "→"; transition: transform var(--tr); }
.card__link:hover::after { transform: translateX(4px); }

/* ---------- 优势条 ---------- */
.features { display: grid; gap: 22px; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); }
.feature { background:#fff; border:1px solid var(--c-border); border-radius: var(--radius);
  padding: 26px; text-align:center; }
.feature__icon { width: 54px; height:54px; margin: 0 auto 14px; border-radius: 14px;
  background: var(--c-blue-l); color: var(--c-blue); display:grid; place-items:center; }
.feature__icon svg { width:28px; height:28px; }
.feature__title { font-size: 17px; margin-bottom: 6px; }
.feature__text { color: var(--c-muted); font-size: 14px; margin:0; }

/* ---------- 数据指标 ---------- */
.stats { display:grid; gap: 20px; grid-template-columns: repeat(auto-fit,minmax(160px,1fr));
  background: var(--c-navy); color:#fff; border-radius: var(--radius); padding: 36px 24px; }
.stat { text-align:center; }
.stat__num { font-size: clamp(28px,4vw,42px); font-weight:800; color: var(--c-orange); }
.stat__label { font-size: 14px; color:#C9D8E8; }

/* ---------- 面包屑 ---------- */
.breadcrumb { background:#fff; border-bottom:1px solid var(--c-border); font-size:13px; padding: 12px 0; }
.breadcrumb a { color: var(--c-muted); }
.breadcrumb span { color: var(--c-text); }
.breadcrumb .sep { margin: 0 8px; color: #C2CDDA; }

/* ---------- 文章 / 正文 ---------- */
.article { background:#fff; border:1px solid var(--c-border); border-radius: var(--radius);
  padding: 36px; box-shadow: var(--shadow); }
.article__head { border-bottom:1px solid var(--c-border); padding-bottom:18px; margin-bottom:24px; }
.article__meta { color: var(--c-muted); font-size:13px; margin-top:8px; }
.article__body { font-size: 16px; color: #2C3A47; }
.article__body h3 { margin-top: 1.6em; }
.article__body img { border-radius: var(--radius-s); margin: 18px 0; }
.article__lead { font-size:17px; color: var(--c-navy); font-weight:600; }

.layout-2col { display:grid; gap: 36px; grid-template-columns: 1fr; }
@media(min-width: 920px){ .layout-2col { grid-template-columns: 260px 1fr; } }
.sidebar { background:#fff; border:1px solid var(--c-border); border-radius:var(--radius);
  padding: 18px; align-self: start; }
.sidebar__title { font-size:16px; padding-bottom:10px; border-bottom:2px solid var(--c-blue-l); margin-bottom:12px; }
.sidebar__list { list-style:none; margin:0; padding:0; }
.sidebar__list a { display:block; padding:9px 10px; border-radius:var(--radius-s); color:var(--c-text); }
.sidebar__list a:hover, .sidebar__list a.is-active { background: var(--c-blue-l); color: var(--c-navy); font-weight:600; }

/* ---------- 参数表 ---------- */
.spec-table { width:100%; border-collapse: collapse; margin: 22px 0; font-size:15px; }
.spec-table th, .spec-table td { border:1px solid var(--c-border); padding: 11px 14px; text-align:left; }
.spec-table th { background: var(--c-blue-l); color: var(--c-navy); width: 32%; white-space:nowrap; }
.spec-table tr:nth-child(even) td { background:#FBFCFE; }

/* ---------- 列表 ---------- */
.list-news { list-style:none; margin:0; padding:0; }
.list-news__item { display:flex; gap:16px; align-items:flex-start; padding:18px 0; border-bottom:1px solid var(--c-border); }
.list-news__date { flex:0 0 auto; width:84px; text-align:center; background:var(--c-navy); color:#fff;
  border-radius:var(--radius-s); padding:8px 0; }
.list-news__date b { display:block; font-size:20px; }
.list-news__date span { font-size:12px; color:#C9D8E8; }
.list-news__body h3 { font-size:18px; margin:0 0 4px; }
.list-news__body p { color:var(--c-muted); font-size:14px; margin:0; }
.article--list { padding: 0; }

/* ---------- 招聘 ---------- */
.job { background:#fff; border:1px solid var(--c-border); border-left:4px solid var(--c-orange);
  border-radius: var(--radius); padding: 22px 24px; margin-bottom:18px; box-shadow: var(--shadow); }
.job__title { font-size:19px; }
.job__meta { color: var(--c-muted); font-size:14px; margin: 6px 0 12px; display:flex; gap:16px; flex-wrap:wrap; }
.job__meta span { display:inline-flex; align-items:center; gap:5px; }
.job__desc { color:#36424F; }

/* ---------- 下载占位 ---------- */
.notice { background: var(--c-blue-l); border:1px solid #C9DEF1; border-radius:var(--radius);
  padding: 28px; text-align:center; color: var(--c-navy); }
.notice svg { width:46px; height:46px; color: var(--c-blue); margin-bottom:10px; }

/* ---------- 联系方式 ---------- */
.contact-grid { display:grid; gap:22px; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); }
.contact-card { background:#fff; border:1px solid var(--c-border); border-radius:var(--radius);
  padding:24px; box-shadow: var(--shadow); }
.contact-card__icon { width:46px;height:46px;border-radius:12px;background:var(--c-blue-l);color:var(--c-blue);
  display:grid;place-items:center; margin-bottom:12px; }
.contact-card__icon svg{width:24px;height:24px;}
.contact-card h3 { font-size:17px; margin-bottom:6px; }
.contact-card p { color:var(--c-muted); margin:0; font-size:15px; }
.map { margin-top:24px; border-radius:var(--radius); overflow:hidden; border:1px solid var(--c-border);
  background: linear-gradient(135deg,#DCE6F0,#EFF4F9); min-height: 280px; display:grid; place-items:center; color:var(--c-muted); }
.product-detail__media { margin: 6px 0 24px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--c-border); background: var(--c-surface); }
.product-detail__media img { width: 100%; display: block; max-height: 440px; object-fit: cover; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-navy); color: #C9D8E8; padding: 54px 0 0; }
.footer__cols { display:grid; gap:32px; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); max-width:var(--maxw); margin:0 auto; padding:0 20px; }
.footer__col h4 { color:#fff; font-size:16px; margin-bottom:16px; }
.footer__col ul { list-style:none; margin:0; padding:0; }
.footer__col li { margin-bottom:9px; }
.footer__col a { color:#C9D8E8; font-size:14px; }
.footer__col a:hover { color:#fff; }
.footer__brand p { font-size:14px; line-height:1.9; }
.footer__bottom { margin-top:40px; border-top:1px solid rgba(255,255,255,.12); padding:18px 20px;
  text-align:center; font-size:13px; color:#8FA6BD; }
.footer__bottom a { color:#8FA6BD; }
.footer__bottom .fb-item { display:inline; }
.footer__bottom .fb-item + .fb-item::before { content:"　|　"; }
@media (max-width: 640px) {
  .footer__bottom { padding:16px 14px; line-height:2; }
  .footer__bottom .fb-item { display:block; }
  .footer__bottom .fb-item + .fb-item::before { content:""; }
}

/* ---------- 返回顶部 ---------- */
.to-top { position:fixed; right:20px; bottom:20px; width:46px; height:46px; border-radius:50%;
  background: var(--c-navy); color:#fff; display:grid; place-items:center; cursor:pointer; opacity:0;
  visibility:hidden; transition: var(--tr); box-shadow: var(--shadow-h); z-index: 90; border:0; }
.to-top.is-show { opacity:1; visibility:visible; }
.to-top:hover { background: var(--c-orange); }

/* ---------- 工具类 ---------- */
.text-center { text-align:center; }
.mt-0 { margin-top:0; }
.lead { font-size:17px; color:#36424F; }
.muted { color: var(--c-muted); }

/* ---------- 响应式导航 ---------- */
/* 中等屏幕：先收起电话，保住 LOGO 与获取方案按钮 */
@media (max-width: 960px) {
  .header-phone { display: none; }
  .logo__name { font-size: 17px; }
}
@media (max-width: 1240px) {
  .nav-toggle { display:block; }
  .nav { position:absolute; top: var(--header-h); left:0; right:0; background: var(--c-navy);
    flex-direction:column; align-items:stretch; max-height:0; overflow:hidden; transition: max-height var(--tr); }
  .nav.is-open { max-height: 560px; box-shadow: 0 10px 20px rgba(0,0,0,.25); }
  .nav__list { flex-direction:column; gap:0; padding: 8px 8px 12px; }
  .nav__link { padding: 14px; border-radius:0; border-bottom:1px solid rgba(255,255,255,.06); }
  .nav__link::after { display:none; }
  .nav__link.is-active { color: var(--c-orange); }
  /* 下拉菜单附加项 */
  .nav__extra { display: block; }
  .nav__link--tel { border-bottom: 0; }
  .nav__link--cta { display: block; text-align: center; background: var(--c-orange);
    color: #fff !important; font-weight: 600; border-radius: var(--radius-s);
    margin-top: 10px; border-bottom: 0; }
  .nav__link--cta:active, .nav__link--cta:hover { background: var(--c-orange-d); color:#fff; }
}

@media (max-width: 640px) {
  .site-header__inner { padding: 0 12px; gap: 8px; }
  /* 小屏隐藏右侧 CTA（电话/获取方案已移入汉堡菜单），保证汉堡按钮可见 */
  .header-cta { display: none; }
  .logo { gap: 9px; min-width: 0; }
  .logo__img { height: 38px; padding: 3px 4px; }
  .logo__divider { height: 28px; }
  .logo__name { font-size: clamp(13px, 4.1vw, 15px); letter-spacing: 0; line-height: 1.3; }
  .logo__sub { display: none; }
  .nav-toggle { margin-left: auto; }
}

@media (max-width: 600px) {
  body { font-size:15px; }
  .section { padding: 44px 0; }
  .article { padding: 22px; }
  .hero { min-height: 380px; }
  .hero__inner { padding: 48px 20px; }
  .list-news__date { width:70px; }
}

/* ============================================================
   新增：Hero 轮换 / Logo / 关于晋凯亿盛 / 核心优势
   ============================================================ */

/* ---------- Hero 三图轮换 ---------- */
.hero__slides { position:absolute; inset:0; }
.hero__slide { position:absolute; inset:0; background-size:cover; background-position:center;
  opacity:0; transition: opacity 1s ease; }
.hero__slide.is-active { opacity:1; }
.hero__overlay { position:absolute; inset:0; z-index:1;
  background: linear-gradient(90deg, rgba(8,24,42,.86) 0%, rgba(8,24,42,.55) 55%, rgba(8,24,42,.25) 100%); }

/* ---------- 关于晋凯亿盛 ---------- */
.about__grid { display:grid; gap:40px; grid-template-columns:1fr; align-items:center; }
.about__text .lead { margin-bottom:14px; }
.about__tags { display:flex; flex-wrap:wrap; gap:10px; margin:20px 0 26px; }
.about__tags span { background:var(--c-blue-l); color:var(--c-navy); font-size:13px;
  padding:6px 14px; border-radius:20px; font-weight:600; }
.about__media { position:relative; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-h); }
.about__media img { width:100%; height:100%; aspect-ratio:4/3; object-fit:cover; display:block; }
.about__badge { position:absolute; left:16px; bottom:16px; background:var(--c-navy); color:#fff;
  border-radius:10px; padding:12px 18px; box-shadow:var(--shadow); }
.about__badge b { display:block; font-size:26px; color:var(--c-orange); line-height:1; }
.about__badge span { font-size:13px; color:#C9D8E8; }
@media(min-width: 920px){ .about__grid { grid-template-columns: 1.05fr .95fr; } }

/* ---------- 核心优势 ---------- */
.adv-grid { display:grid; gap:22px; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); }
.adv { background:#fff; border:1px solid var(--c-border); border-radius:var(--radius);
  padding:30px 24px; text-align:center; transition: transform var(--tr), box-shadow var(--tr); }
.adv:hover { transform: translateY(-6px); box-shadow:var(--shadow-h); }
.adv__icon { width:56px; height:56px; margin:0 auto 16px; border-radius:16px;
  background:var(--c-blue-l); color:var(--c-blue); display:grid; place-items:center; }
.adv__icon svg { width:30px; height:30px; }
.adv__title { font-size:18px; margin-bottom:8px; }
.adv__text { color:var(--c-muted); font-size:14px; margin:0; }