/* ============================================================
   盛熙智能官网 · 全站样式
   结构参考行业同类企业站点，样式与文案为原创实现
   ============================================================ */

:root {
  --blue-900: #0a2a5e;
  --blue-800: #103d8a;
  --blue-700: #1550b8;
  --blue-600: #1b5fcc;
  --blue-500: #2f7be8;
  --cyan-400: #2fa7ff;
  --ink-900: #14213d;
  --ink-700: #33415c;
  --ink-500: #5b6b8c;
  --ink-300: #9aa7c0;
  --bg-soft: #f4f7fc;
  --bg-softer: #eef3fa;
  --line: #dce4f0;
  --white: #ffffff;
  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 22px;
  --shadow-s: 0 2px 10px rgba(16, 61, 138, 0.08);
  --shadow-m: 0 10px 30px rgba(16, 61, 138, 0.12);
  --shadow-l: 0 24px 60px rgba(10, 42, 94, 0.18);
  --header-h: 76px;
  --topbar-h: 36px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Helvetica", Arial, "Noto Sans SC", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

:focus-visible {
  outline: 2px solid var(--blue-600);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(1200px, 100% - 48px);
  margin-inline: auto;
}

/* ---------- 顶部信息条 ---------- */
.topbar {
  height: var(--topbar-h);
  background: var(--blue-900);
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
}
.topbar .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-welcome { letter-spacing: 0.04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-links { display: flex; align-items: center; gap: 20px; flex-shrink: 0; }
.topbar-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.82);
}
.topbar-links a:hover { color: var(--white); }
.topbar-links svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ---------- 主导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(16, 61, 138, 0.02);
}
.navbar {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  object-fit: cover;
  display: block;
  box-shadow: 0 6px 16px rgba(21, 80, 184, 0.35);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { font-size: 21px; font-weight: 800; color: var(--ink-900); letter-spacing: 0.06em; }
.brand-sub { font-size: 11px; color: var(--ink-300); letter-spacing: 0.22em; text-transform: uppercase; }

.main-nav > ul { display: flex; align-items: center; gap: 4px; }
.main-nav .nav-item { position: relative; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  height: var(--header-h);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-900);
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 18px;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}
.nav-item:hover .nav-link::after,
.nav-item:focus-within .nav-link::after,
.nav-item.active .nav-link::after { transform: scaleX(1); }
.nav-item.active .nav-link { color: var(--blue-600); }
.nav-link .caret { width: 10px; height: 10px; transition: transform .25s ease; }
.nav-item:hover .caret, .nav-item:focus-within .caret { transform: rotate(180deg); }

/* 全宽巨型下拉 */
.mega {
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translate(-50%, 12px);
  width: min(1080px, calc(100vw - 48px));
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-l);
  padding: 28px 32px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
  z-index: 120;
}
.nav-item:hover .mega,
.nav-item:focus-within .mega {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}
.mega.simple { width: 220px; padding: 12px; }
.mega-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 24px; }
.mega-col h4 { margin-bottom: 10px; }
.mega-col h4 a {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.mega-col h4 a:hover { color: var(--blue-600); }
.mega-col h4 a::after { content: "›"; color: var(--blue-500); font-weight: 400; }
.mega-col ul { display: flex; flex-direction: column; }
.mega-col ul a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--ink-500);
  border-bottom: 1px dashed transparent;
}
.mega-col ul a:hover { color: var(--blue-600); padding-left: 4px; }
.mega.simple a {
  display: block;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--ink-700);
  border-radius: var(--radius-s);
}
.mega.simple a:hover { background: var(--bg-soft); color: var(--blue-600); }

/* 移动端汉堡 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink-900);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首屏轮播 ---------- */
.hero {
  position: relative;
  height: clamp(420px, 62vh, 640px);
  overflow: hidden;
  background: var(--blue-900);
}
.hero-media { position: absolute; inset: 0; z-index: 0; }
.hero-media video { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-track { position: relative; z-index: 1; display: flex; height: 100%; transition: transform .7s cubic-bezier(.22, .61, .36, 1); }
.hero-slide { position: relative; flex: 0 0 100%; height: 100%; display: flex; align-items: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg svg { width: 100%; height: 100%; display: block; }
.hero-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(7, 28, 66, 0.88) 8%, rgba(10, 42, 94, 0.55) 45%, rgba(10, 42, 94, 0.15) 80%);
}
.hero-inner { position: relative; z-index: 2; color: var(--white); max-width: 640px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan-400);
  margin-bottom: 18px;
}
.hero-kicker::before { content: ""; width: 34px; height: 2px; background: var(--cyan-400); }
.hero-title {
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin-bottom: 18px;
}
.hero-desc { font-size: clamp(15px, 1.4vw, 18px); color: rgba(255, 255, 255, 0.82); margin-bottom: 34px; max-width: 34em; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400));
  color: var(--white);
  box-shadow: 0 10px 24px rgba(27, 95, 204, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(27, 95, 204, 0.5); }
.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.55);
  color: var(--white);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: var(--white); }
.btn-outline { border: 1.5px solid var(--blue-600); color: var(--blue-600); }
.btn-outline:hover { background: var(--blue-600); color: var(--white); }

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  display: grid;
  place-items: center;
  transition: background .2s ease;
}
.hero-arrow:hover { background: rgba(255, 255, 255, 0.28); }
.hero-arrow svg { width: 20px; height: 20px; }
.hero-prev { left: 28px; }
.hero-next { right: 28px; }
.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 10px;
}
.hero-dot {
  width: 26px;
  height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.32);
  transition: background .25s ease, width .25s ease;
}
.hero-dot[aria-current="true"] { background: var(--white); width: 40px; }

/* ---------- 通用版块 ---------- */
.section { padding: 84px 0; }
.section.tinted { background: var(--bg-soft); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--blue-600);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title { font-size: clamp(26px, 3vw, 38px); font-weight: 800; color: var(--ink-900); line-height: 1.3; }
.section-desc { margin-top: 14px; color: var(--ink-500); font-size: 16px; }
.section-more { margin-top: 40px; text-align: center; }

/* ---------- 产品分类卡 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}
.product-card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 30px 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  overflow: hidden;
}
.product-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-600), var(--cyan-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); border-color: rgba(47, 123, 232, 0.4); }
.product-card:hover::before { transform: scaleX(1); }
.product-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--bg-softer), #e2ecfb);
  display: grid;
  place-items: center;
  color: var(--blue-600);
}
.product-icon svg { width: 28px; height: 28px; }
.product-name { font-size: 18px; font-weight: 700; color: var(--ink-900); }
.product-desc { font-size: 14px; color: var(--ink-500); flex: 1; }
.product-link { font-size: 14px; font-weight: 600; color: var(--blue-600); display: inline-flex; align-items: center; gap: 6px; }
.product-link svg { width: 14px; height: 14px; transition: transform .2s ease; }
.product-card:hover .product-link svg { transform: translateX(4px); }

/* ---------- 应用行业网格 ---------- */
.app-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.app-card {
  position: relative;
  border-radius: var(--radius-m);
  overflow: hidden;
  min-height: 168px;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: var(--white);
  isolation: isolate;
  transition: transform .25s ease, box-shadow .25s ease;
}
.app-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); }
.app-card .app-bg { position: absolute; inset: 0; z-index: -2; }
.app-card .app-bg svg { width: 100%; height: 100%; }
.app-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(10, 42, 94, 0.05) 30%, rgba(7, 28, 66, 0.82));
  transition: background .25s ease;
}
.app-card:hover::after { background: linear-gradient(180deg, rgba(21, 80, 184, 0.18) 20%, rgba(7, 28, 66, 0.9)); }
.app-name { font-size: 17px; font-weight: 700; }
.app-sub { font-size: 12.5px; color: rgba(255, 255, 255, 0.75); margin-top: 2px; }

/* ---------- 优势带 ---------- */
.why-band {
  background: linear-gradient(120deg, var(--blue-900), var(--blue-700) 60%, #1f6fd6);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.why-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.why-item { padding: 8px 4px; }
.why-num {
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(90deg, #9fd0ff, #ffffff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}
.why-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.why-item p { font-size: 14px; color: rgba(255, 255, 255, 0.72); }

/* ---------- 新闻卡片 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-m); }
.news-cover { position: relative; height: 180px; overflow: hidden; }
.news-cover svg { width: 100%; height: 100%; transition: transform .4s ease; }
.news-card:hover .news-cover svg { transform: scale(1.05); }
.news-date {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(7, 28, 66, 0.78);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 12.5px;
  padding: 5px 12px;
  border-radius: 999px;
  letter-spacing: 0.06em;
}
.news-body { padding: 22px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.news-title { font-size: 17px; font-weight: 700; color: var(--ink-900); line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card:hover .news-title { color: var(--blue-600); }
.news-excerpt { font-size: 14px; color: var(--ink-500); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.news-link { font-size: 14px; font-weight: 600; color: var(--blue-600); }

/* ---------- 关于我们 ---------- */
.about-wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.about-visual { position: relative; border-radius: var(--radius-l); overflow: hidden; box-shadow: var(--shadow-l); aspect-ratio: 4 / 3; }
.about-visual svg { width: 100%; height: 100%; }
.about-badge {
  position: absolute;
  right: 22px;
  bottom: 22px;
  background: rgba(255, 255, 255, 0.94);
  border-radius: var(--radius-m);
  padding: 16px 22px;
  box-shadow: var(--shadow-m);
  text-align: center;
}
.about-badge strong { display: block; font-size: 26px; color: var(--blue-600); font-weight: 800; }
.about-badge span { font-size: 12.5px; color: var(--ink-500); }
.about-body .section-tag { margin-bottom: 10px; }
.about-body p { margin-top: 16px; color: var(--ink-500); }
.about-points { margin-top: 26px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; }
.about-point { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--ink-700); }
.about-point svg { width: 20px; height: 20px; color: var(--blue-600); flex-shrink: 0; margin-top: 3px; }
.about-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 联系 CTA ---------- */
.cta-band {
  position: relative;
  background: linear-gradient(110deg, var(--blue-800), var(--blue-600) 55%, var(--cyan-400));
  color: var(--white);
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  border: 60px solid rgba(255, 255, 255, 0.08);
}
.cta-inner { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(24px, 2.6vw, 34px); font-weight: 800; }
.cta-inner p { margin-top: 10px; color: rgba(255, 255, 255, 0.8); }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-white { background: var(--white); color: var(--blue-700); }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(7, 28, 66, 0.35); }

/* ---------- 页脚 ---------- */
.site-footer { background: #0b1c3f; color: rgba(255, 255, 255, 0.66); }
.footer-main { padding: 64px 0 44px; display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; }
.footer-brand .brand-name { color: #fff; }
.footer-logo { border-radius: 10px; display: block; margin-bottom: 14px; }
.footer-brand p { margin-top: 16px; font-size: 14px; max-width: 30em; }
.footer-contact { margin-top: 18px; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.footer-contact span { display: inline-flex; align-items: center; gap: 8px; }
.footer-contact svg { width: 15px; height: 15px; color: var(--cyan-400); }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; font-size: 14px; }
.footer-col a:hover { color: var(--cyan-400); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- 子页通用 ---------- */
.page-banner {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  background: var(--blue-900);
}
.page-banner .banner-bg { position: absolute; inset: 0; }
.page-banner .banner-bg svg { width: 100%; height: 100%; }
.page-banner::after { content: ""; position: absolute; inset: 0; background: linear-gradient(95deg, rgba(7, 28, 66, 0.85), rgba(10, 42, 94, 0.35)); }
.page-banner .container { position: relative; z-index: 1; }
.page-banner h1 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; }
.breadcrumb { margin-top: 12px; font-size: 14px; color: rgba(255, 255, 255, 0.72); display: flex; gap: 8px; flex-wrap: wrap; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb span::before { content: "/"; margin-right: 8px; color: rgba(255, 255, 255, 0.4); }

.wip {
  padding: 100px 0;
  text-align: center;
}
.wip-icon {
  width: 88px;
  height: 88px;
  margin: 0 auto 26px;
  border-radius: 24px;
  background: var(--bg-softer);
  display: grid;
  place-items: center;
  color: var(--blue-600);
}
.wip-icon svg { width: 42px; height: 42px; }
.wip h2 { font-size: 26px; color: var(--ink-900); font-weight: 800; margin-bottom: 12px; }
.wip p { color: var(--ink-500); max-width: 34em; margin: 0 auto 30px; }

/* 列表页（新闻） */
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-row {
  display: grid;
  grid-template-columns: 180px 1fr auto;
  gap: 24px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 20px 24px;
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-row:hover { box-shadow: var(--shadow-m); transform: translateY(-3px); }
.news-row .news-cover { height: 110px; border-radius: var(--radius-s); }
.news-row .news-date { position: static; background: var(--bg-softer); color: var(--blue-700); display: inline-block; }
.news-row h3 { font-size: 18px; color: var(--ink-900); font-weight: 700; margin-bottom: 8px; }
.news-row:hover h3 { color: var(--blue-600); }
.news-row p { font-size: 14px; color: var(--ink-500); }
.news-row .arrow { color: var(--ink-300); width: 22px; height: 22px; }

/* 卡片网格（产品/应用总览页） */
.tile-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.tile {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.tile:hover { transform: translateY(-5px); box-shadow: var(--shadow-m); }
.tile h3 { font-size: 19px; color: var(--ink-900); font-weight: 700; }
.tile:hover h3 { color: var(--blue-600); }
.tile p { font-size: 14px; color: var(--ink-500); flex: 1; }
.tile .tile-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tile .tag { font-size: 12.5px; color: var(--blue-700); background: var(--bg-softer); border-radius: 999px; padding: 3px 12px; }

/* 联系页 */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 30px 26px;
  text-align: center;
  transition: transform .25s ease, box-shadow .25s ease;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-m); }
.contact-card .product-icon { margin: 0 auto 16px; }
.contact-card h3 { font-size: 17px; color: var(--ink-900); margin-bottom: 8px; }
.contact-card p { font-size: 15px; color: var(--ink-500); word-break: break-all; }
.contact-card a { color: var(--blue-600); font-weight: 600; }

/* 关于页 */
.about-article { max-width: 860px; }
.about-article p { margin-bottom: 18px; color: var(--ink-700); }
.about-article h2 { font-size: 24px; color: var(--ink-900); margin: 36px 0 16px; font-weight: 800; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 28px; }
.value-card { background: var(--bg-soft); border-radius: var(--radius-m); padding: 26px 20px; text-align: center; }
.value-card h4 { color: var(--blue-700); font-size: 18px; margin-bottom: 8px; }
.value-card p { font-size: 13.5px; color: var(--ink-500); margin: 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .app-grid { grid-template-columns: repeat(3, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .hero-arrow { display: none; }
}

@media (max-width: 860px) {
  .topbar-welcome { display: none; }
  .main-nav {
    position: fixed;
    inset: calc(var(--topbar-h) + var(--header-h)) 0 auto 0;
    max-height: calc(100dvh - var(--topbar-h) - var(--header-h));
    overflow-y: auto;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-l);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .main-nav > ul { flex-direction: column; align-items: stretch; padding: 8px 16px 20px; gap: 0; }
  .nav-link { width: 100%; height: auto; padding: 14px 6px; justify-content: space-between; }
  .nav-link::after { display: none; }
  .nav-item { border-bottom: 1px solid var(--line); }
  .mega, .mega.simple {
    position: static;
    transform: none;
    width: 100%;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0 6px 14px;
    display: none;
  }
  .nav-item.expanded .mega { display: block; }
  .nav-item.expanded .caret { transform: rotate(180deg); }
  .mega-cols { grid-template-columns: 1fr 1fr; gap: 12px 20px; }
  .nav-toggle { display: flex; }
  .about-wrap { grid-template-columns: 1fr; gap: 36px; }
  .news-grid { grid-template-columns: 1fr; }
  .tile-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .value-grid { grid-template-columns: repeat(2, 1fr); }
  .news-row { grid-template-columns: 1fr; }
  .news-row .news-cover { height: 150px; }
  .news-row .arrow { display: none; }
}

@media (max-width: 560px) {
  .container { width: calc(100% - 36px); }
  .section { padding: 60px 0; }
  .product-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .app-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .why-grid { grid-template-columns: 1fr; gap: 22px; }
  .about-points { grid-template-columns: 1fr; }
  .tile-grid { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .hero-arrow { display: none; }
  .product-card { padding: 22px 18px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ============ 产品中心（分类 + 卡片） ============ */
.product-card.has-photo .product-photo { display:block; height:190px; margin-bottom:14px; overflow:hidden; border-radius:10px; background:#fff; }
.product-card.has-photo .product-photo img { width:100%; height:100%; object-fit:cover; display:block; }
.cat-section { padding-top:32px; }
.cat-head { margin-bottom:28px; }
.cat-banner { position:relative; border-radius:14px; overflow:hidden; height:130px; margin-bottom:14px; }
.cat-banner svg { position:absolute; inset:0; width:100%; height:100%; }
.cat-banner h2 { position:relative; z-index:1; color:#fff; font-size:26px; margin:0; padding:44px 28px; letter-spacing:2px; }
.cat-desc { color:var(--ink-300, #5b6b80); max-width:760px; }
.p-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(240px, 1fr)); gap:20px; }
.p-card { display:flex; flex-direction:column; background:#fff; border:1px solid #e6ecf5; border-radius:14px; overflow:hidden; transition:box-shadow .25s, transform .25s; }
.p-card:hover { box-shadow:0 10px 28px rgba(15,45,95,.14); transform:translateY(-3px); }
.p-photo { display:block; height:200px; background:#f6f8fb; overflow:hidden; }
.p-photo img { width:100%; height:100%; object-fit:cover; display:block; transition:transform .35s; }
.p-card:hover .p-photo img { transform:scale(1.05); }
.p-body { display:flex; flex-direction:column; gap:8px; padding:16px 18px 18px; flex:1; }
.p-name { font-size:17px; font-weight:700; color:#0f2d5c; }
.p-summary { font-size:13.5px; color:var(--ink-300, #5b6b80); line-height:1.6; flex:1; }

/* ============ 产品详情页 ============ */
.prod-wrap { display:grid; grid-template-columns:minmax(280px, 400px) 1fr; gap:44px; align-items:center; }
.prod-gallery { position:relative; width:100%; max-width:400px; margin:0 auto; min-width:0; }
.prod-photo { width:100%; min-width:0; overflow:hidden; background:transparent; display:flex; align-items:center; justify-content:center; min-height:220px; }
.prod-photo img { display:block; max-width:100%; max-height:440px; width:auto; height:auto; }
.prod-cat { display:inline-block; margin-top:12px; font-size:12.5px; letter-spacing:2px; color:#1550b8; background:#eaf2ff; border-radius:20px; padding:5px 14px; }
.prod-info h2 { font-size:30px; margin:0 0 10px; color:#0f2d5c; }
.prod-summary { font-size:16px; color:#1550b8; font-weight:600; margin-bottom:14px; }
.prod-info p { color:#3d4f66; line-height:1.9; }
.prod-actions { margin-top:22px; display:flex; gap:14px; flex-wrap:wrap; }
.feat-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(300px, 1fr)); gap:14px; }
.feat-item { display:flex; align-items:flex-start; gap:10px; background:#fff; border:1px solid #e6ecf5; border-radius:10px; padding:14px 16px; font-size:14.5px; color:#2c3e55; line-height:1.6; }
.feat-item svg { width:20px; height:20px; flex:none; color:#1550b8; margin-top:2px; }
.apps-text { max-width:860px; font-size:15.5px; line-height:2; color:#3d4f66; background:#f4f8ff; border-left:4px solid #1550b8; border-radius:0 10px 10px 0; padding:20px 24px; }
.sub-section { padding-top:0; }
.step-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(220px, 1fr)); gap:16px; }
.step-item { background:#fff; border:1px solid #e6ecf5; border-radius:12px; padding:18px; display:flex; gap:14px; align-items:flex-start; }
.step-num { flex:none; width:34px; height:34px; border-radius:50%; background:#1550b8; color:#fff; font-weight:700; display:flex; align-items:center; justify-content:center; font-size:15px; }
.step-item p { margin:4px 0 0; font-size:14px; line-height:1.7; color:#2c3e55; }
.lineup { display:flex; flex-wrap:wrap; gap:12px; }
.tag { display:inline-block; background:#eaf2ff; color:#1550b8; border-radius:20px; padding:7px 18px; font-size:14px; }
.rel-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(180px, 1fr)); gap:16px; }
.rel-card { display:block; background:#fff; border:1px solid #e6ecf5; border-radius:12px; overflow:hidden; transition:box-shadow .25s; }
.rel-card:hover { box-shadow:0 8px 22px rgba(15,45,95,.12); }
.rel-photo { display:block; height:130px; background:#f6f8fb; overflow:hidden; }
.rel-photo img { width:100%; height:100%; object-fit:cover; display:block; }
.rel-name { display:block; padding:12px 14px; font-size:14px; font-weight:600; color:#0f2d5c; }

/* ============ 关于我们（资质/客户/历程） ============ */
.value-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(240px, 1fr)); gap:18px; }
.value-card { background:#fff; border:1px solid #e6ecf5; border-radius:12px; padding:22px; }
.value-card h4 { margin:0 0 10px; color:#0f2d5c; font-size:17px; }
.value-card h4 svg { width:18px; height:18px; vertical-align:-3px; color:#1550b8; }
.value-card p { margin:0; font-size:14px; color:var(--ink-300, #5b6b80); line-height:1.8; }
.customer-wall { display:flex; flex-wrap:wrap; gap:14px; }
.customer-tag { background:#fff; border:1px solid #dbe6f5; font-weight:600; font-size:16px; padding:10px 26px; }
.stat-band { margin-top:36px; display:grid; grid-template-columns:repeat(auto-fit, minmax(150px, 1fr)); gap:16px; }
.stat-item { text-align:center; background:#0f2d5c; border-radius:12px; padding:26px 12px; }
.stat-item strong { display:block; font-size:30px; color:#7cc4ff; }
.stat-item span { font-size:13.5px; color:#c8d9f2; }

/* ============ 发展历程时间线 ============ */
.timeline { position:relative; max-width:860px; margin:0 auto; padding-left:30px; border-left:3px solid #d5e3f7; }
.timeline-item { position:relative; padding:0 0 34px 26px; }
.timeline-item:last-child { padding-bottom:0; }
.timeline-item::before { content:""; position:absolute; left:-10px; top:6px; width:14px; height:14px; border-radius:50%; background:#1550b8; border:3px solid #eaf2ff; }
.timeline-year { font-size:24px; font-weight:800; color:#1550b8; letter-spacing:1px; }
.timeline-body h3 { margin:6px 0 8px; font-size:18px; color:#0f2d5c; }
.timeline-body p { margin:0; color:var(--ink-300, #5b6b80); line-height:1.8; font-size:14.5px; }

@media (max-width: 860px) {
  .prod-wrap { grid-template-columns:1fr; }
  .cat-banner h2 { padding:36px 20px; font-size:22px; }
}

/* ============ 产品详情页 v2（参考 axxonauto 布局） ============ */
.prod-hero { padding-bottom:56px; }
.prod-hero .prod-wrap { align-items:center; }
.prod-kicker { display:inline-block; font-size:12.5px; letter-spacing:3px; color:#1550b8; background:#eaf2ff; border-radius:20px; padding:5px 14px; margin-bottom:14px; }
.prod-info h2 { font-size:34px; }
.prod-desc { color:#3d4f66; line-height:1.9; }
.feature-cols { display:grid; grid-template-columns:minmax(260px,380px) 1fr; gap:40px; align-items:start; }
.feature-intro { font-size:15px; color:#3d4f66; line-height:2; margin:0; padding:18px 20px; background:#fff; border-left:4px solid #1550b8; border-radius:0 10px 10px 0; }
.feature-list { margin:0; padding:0; list-style:none; display:grid; grid-template-columns:repeat(auto-fill, minmax(320px, 1fr)); gap:10px 24px; }
.feature-list li { position:relative; padding:10px 0 10px 26px; font-size:14.5px; color:#2c3e55; line-height:1.7; border-bottom:1px dashed #d5e0ef; }
.feature-list li::before { content:""; position:absolute; left:2px; top:17px; width:8px; height:8px; border-radius:50%; background:#1550b8; }
.spec-table { width:100%; max-width:960px; border-collapse:collapse; background:#fff; border:1px solid #e1e9f4; font-size:14.5px; }
.spec-table td { border:1px solid #e1e9f4; padding:12px 18px; color:#2c3e55; line-height:1.7; }
.spec-table .spec-key { width:220px; background:#f4f8ff; color:#0f2d5c; font-weight:600; }
.spec-table .spec-group th { background:#1550b8; color:#fff; text-align:left; padding:11px 18px; font-size:15px; letter-spacing:1px; font-weight:600; }
.spec-note { margin-top:14px; font-size:13px; color:#8a97a8; }
@media (max-width: 860px) {
  .feature-cols { grid-template-columns:1fr; }
  .spec-table .spec-key { width:130px; }
}

/* ============ 产品特性 · 主题特性块（参考 Au77s 布局） ============ */
.feature-intro-wide { max-width:860px; font-size:15.5px; color:#3d4f66; line-height:2; margin:0 0 26px; padding:18px 22px; background:#fff; border-left:4px solid #1550b8; border-radius:0 10px 10px 0; }
.feature-blocks { display:grid; grid-template-columns:repeat(auto-fill, minmax(330px, 1fr)); gap:18px; }
.feature-block { background:#fff; border:1px solid #e6ecf5; border-radius:12px; padding:20px 22px; transition:box-shadow .25s; }
.feature-block:hover { box-shadow:0 8px 22px rgba(15,45,95,.10); }
.feature-block h4 { margin:0 0 8px; font-size:16.5px; color:#1550b8; }
.feature-block p { margin:0; font-size:14px; color:var(--ink-300, #5b6b80); line-height:1.9; }

/* ============ 热招岗位 ============ */
.job-list { display:flex; flex-direction:column; gap:16px; max-width:900px; }
.job-item { background:#fff; border:1px solid #e6ecf5; border-radius:14px; overflow:hidden; transition:box-shadow .25s; }
.job-item:hover { box-shadow:0 10px 28px rgba(15,45,95,.12); }
.job-item summary { list-style:none; cursor:pointer; padding:22px 26px; display:flex; flex-direction:column; gap:8px; }
.job-item summary::-webkit-details-marker { display:none; }
.job-head { display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.job-title { font-size:20px; font-weight:700; color:#0f2d5c; }
.job-salary { font-size:18px; font-weight:700; color:#e0452c; }
.job-meta { font-size:14px; color:var(--ink-500, #6b7a8d); }
.job-body { padding:0 26px 24px; border-top:1px dashed #e6ecf5; }
.job-cols { display:grid; grid-template-columns:1fr 1fr; gap:28px; padding-top:18px; }
.job-cols h4 { margin:0 0 10px; font-size:15.5px; color:#1550b8; }
.job-cols ul { margin:0; padding-left:18px; }
.job-cols li { font-size:14px; color:#3d4f66; line-height:1.9; margin-bottom:4px; }
.job-welfare { display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
.job-welfare-tag { font-size:12.5px; color:#1550b8; background:#eaf2ff; border-radius:20px; padding:4px 12px; }
.job-actions { display:flex; align-items:center; gap:18px; flex-wrap:wrap; margin-top:22px; }
.job-actions .btn svg { width:16px; height:16px; vertical-align:-3px; margin-left:6px; }
.job-note { font-size:13.5px; color:#8a97a8; }
@media (max-width: 860px) {
  .job-cols { grid-template-columns:1fr; gap:18px; }
  .job-item summary { padding:18px 20px; }
  .job-body { padding:0 20px 20px; }
}