:root {
  --c-primary: #1a3f8f;      /* Dofun 深蓝 */
  --c-primary-dark: #0f2c66;
  --c-primary-2: #2b5fc4;
  --c-accent: #c8161d;       /* 图册红色点缀 */
  --c-ink: #1c2433;
  --c-ink-2: #586173;
  --c-line: #e6e9f0;
  --c-bg: #ffffff;
  --c-bg-alt: #f4f7fc;
  --radius: 14px;
  --shadow: 0 10px 34px rgba(26, 63, 143, 0.10);
  --max: 1180px;
  --header-h: 124px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 20px; border-radius: 10px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: all .2s ease; white-space: nowrap;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-2); transform: translateY(-1px); }
.btn-accent {
  background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-primary-2) 100%);
  color: #fff; box-shadow: 0 4px 14px rgba(26, 63, 143, .28);
}
.btn-accent:hover { filter: brightness(1.06); transform: translateY(-1px); }
.hero .btn-outline { background: transparent; border-color: rgba(255,255,255,.7); color: #fff; }
.hero .btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-outline-dark { background: transparent; border-color: var(--c-primary); color: var(--c-primary); }
.btn-outline-dark:hover { background: var(--c-bg-alt); }
.btn-ghost-dark { background: transparent; color: var(--c-ink-2); border: 1px solid var(--c-line); }
.btn-ghost-dark:hover { color: var(--c-primary); border-color: #c3d6f5; }
.btn-ghost { background: transparent; color: var(--c-ink); }
.btn-ghost:hover { color: var(--c-primary); }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- 导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
}

.header-topbar {
  background: linear-gradient(90deg, var(--c-primary-dark) 0%, #163878 50%, var(--c-primary) 100%);
  color: rgba(255,255,255,.88); font-size: 13px;
}
.header-topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 36px; gap: 16px;
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar-item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.topbar-icon { width: 14px; height: 14px; opacity: .85; flex-shrink: 0; }

.header-main {
  position: relative;
  background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.header-main.scrolled {
  border-bottom-color: var(--c-line);
  box-shadow: 0 4px 24px rgba(15, 44, 102, .08);
}
.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 84px;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.brand-mark {
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 14px;
  background: linear-gradient(145deg, #eef4ff, #fff);
  border: 1px solid #d9e6fb;
  box-shadow: 0 4px 16px rgba(26, 63, 143, .08);
}
.brand-logo { width: 34px; height: 34px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; gap: 2px; }
.brand-name {
  font-weight: 800; font-size: 19px; color: var(--c-primary-dark);
  letter-spacing: .5px;
}
.brand-sub { font-size: 11px; color: var(--c-ink-2); letter-spacing: 1px; text-transform: uppercase; }

.nav-links {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; flex-wrap: wrap;
}
.nav-item {
  position: relative; padding: 10px 16px;
  color: var(--c-ink); font-size: 15px; font-weight: 500;
  border-radius: 8px; transition: color .2s, background .2s;
}
.nav-item::after {
  content: ''; position: absolute; left: 16px; right: 16px; bottom: 4px;
  height: 2px; border-radius: 2px; background: var(--c-primary-2);
  transform: scaleX(0); transition: transform .25s ease;
}
.nav-item:hover { color: var(--c-primary); background: rgba(26, 63, 143, .04); }
.nav-item:hover::after, .nav-item.is-active::after { transform: scaleX(1); }
.nav-item.is-active { color: var(--c-primary); font-weight: 700; }

.nav-item-cta {
  margin-left: 6px; padding: 9px 18px;
  color: #fff !important; font-weight: 600;
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-2) 100%);
  border-radius: 999px; box-shadow: 0 4px 14px rgba(43, 95, 196, .25);
}
.nav-item-cta::after { display: none; }
.nav-item-cta:hover {
  filter: brightness(1.05); transform: translateY(-1px);
  background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-primary-2) 100%);
}

.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-login { color: var(--c-ink-2); border: 1px solid var(--c-line); border-radius: 8px; }
.nav-login:hover { color: var(--c-primary); border-color: #c3d6f5; background: var(--c-bg-alt); }
.nav-select { border-radius: 8px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--c-ink); transition: .25s; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首页轮播 ---------- */
.hero-carousel { position: relative; }
.carousel { position: relative; height: min(78vh, 620px); min-height: 420px; overflow: hidden; color: #fff; }
.carousel-track { height: 100%; }
.carousel-slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden;
  transition: opacity .7s ease, visibility .7s;
}
.carousel-slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
.slide-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.04); transition: transform 6s ease;
}
.carousel-slide.is-active .slide-bg { transform: scale(1); }
.slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(10,28,66,.82) 0%, rgba(15,44,102,.55) 48%, rgba(15,44,102,.28) 100%);
}
.slide-content {
  position: relative; z-index: 2; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: 40px; padding-bottom: 48px;
}
.hero-carousel .hero-badge {
  display: inline-block; width: fit-content; margin-bottom: 16px; padding: 6px 14px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px; font-size: 13px;
}
.hero-carousel .hero-title { font-size: 46px; line-height: 1.2; margin: 0 0 16px; max-width: 720px; }
.hero-carousel .hero-title .accent { color: #8fc0ff; }
.hero-carousel .hero-desc { font-size: 17px; color: rgba(255,255,255,.88); margin: 0 0 28px; max-width: 560px; }
.hero-carousel .hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.carousel-btn {
  position: absolute; top: 50%; z-index: 3; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255,255,255,.35);
  background: rgba(0,0,0,.25); color: #fff; font-size: 28px; line-height: 1; cursor: pointer;
  backdrop-filter: blur(4px);
}
.carousel-btn:hover { background: rgba(0,0,0,.4); }
.carousel-btn.prev { left: 18px; }
.carousel-btn.next { right: 18px; }
.carousel-dots {
  position: absolute; left: 0; right: 0; bottom: 22px; z-index: 3;
  display: flex; justify-content: center; gap: 8px;
}
.carousel-dots .dot {
  width: 10px; height: 10px; border-radius: 50%; border: 0; padding: 0;
  background: rgba(255,255,255,.45); cursor: pointer;
}
.carousel-dots .dot.is-active { background: #fff; width: 26px; border-radius: 8px; }

@media (max-width: 900px) {
  .carousel { min-height: 380px; height: 62vh; }
  .hero-carousel .hero-title { font-size: 32px; }
  .carousel-btn { display: none; }
}
@media (max-width: 620px) {
  .carousel { min-height: 340px; }
  .hero-carousel .hero-title { font-size: 26px; }
}

/* ---------- Hero（旧布局兼容） ---------- */
.hero { position: relative; color: #fff; overflow: hidden; padding: 86px 0 96px; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(900px 380px at 78% -8%, rgba(120,170,255,.45) 0%, rgba(120,170,255,0) 60%),
    linear-gradient(160deg, #0f2c66 0%, #1a3f8f 45%, #2b5fc4 100%);
}
.hero-bg::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 42%;
  background: linear-gradient(180deg, rgba(43,95,196,0) 0%, rgba(20,52,118,.55) 100%);
}
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero-slogan { display: grid; grid-template-columns: auto auto; gap: 2px 14px; margin-bottom: 22px; align-items: baseline; }
.hero-slogan .zh { font-size: 22px; font-weight: 700; letter-spacing: 4px; }
.hero-slogan .en { font-size: 13px; color: #ff7a80; font-style: italic; align-self: center; }
.hero-title { font-size: 44px; line-height: 1.22; margin: 0 0 18px; letter-spacing: 1px; }
.hero-title .accent { color: #8fc0ff; }
.hero-desc { font-size: 16px; color: rgba(255,255,255,.86); margin: 0 0 28px; max-width: 540px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 36px; }
.hero-stats { display: flex; gap: 34px; flex-wrap: wrap; }
.hero-stats .stat { display: flex; flex-direction: column; }
.hero-stats .stat strong { font-size: 30px; color: #fff; }
.hero-stats .stat span { font-size: 13px; color: rgba(255,255,255,.75); }

/* Hero 模拟窗口 */
.hero-visual { display: flex; justify-content: center; }
.mock-window {
  width: 100%; max-width: 440px; background: #fff; color: var(--c-ink);
  border-radius: var(--radius); box-shadow: 0 24px 60px rgba(5,20,55,.4); overflow: hidden;
}
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 12px 14px; background: #eef2f9; border-bottom: 1px solid var(--c-line); }
.mock-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.mock-bar .red { background: #ff5f57; } .mock-bar .yellow { background: #febc2e; } .mock-bar .green { background: #28c840; }
.mock-title { margin-left: 10px; font-size: 13px; color: var(--c-ink-2); }
.mock-body { padding: 20px; }
.mock-row { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.mock-label { width: 48px; color: var(--c-ink-2); font-size: 14px; }
.mock-pill { background: var(--c-bg-alt); border: 1px solid var(--c-line); border-radius: 8px; padding: 6px 12px; font-size: 14px; }
.mock-pill.accent { color: var(--c-primary); border-color: #c3d6f5; background: #eef4fd; }
.mock-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0; }
.mock-cell { background: var(--c-bg-alt); border-radius: 10px; padding: 12px; }
.mock-cell span { display: block; font-size: 12px; color: var(--c-ink-2); }
.mock-cell strong { font-size: 18px; }
.mock-result { background: var(--c-primary); color: #fff; border-radius: 10px; padding: 12px 14px; font-size: 14px; text-align: center; font-weight: 600; }

/* ---------- Hero 公司版 ---------- */
.hero-company { padding: 72px 0 88px; }
.hero-company-inner { grid-template-columns: 1.1fr .9fr; }
.hero-badge {
  display: inline-block; margin-bottom: 16px; padding: 6px 14px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px; font-size: 13px; color: rgba(255,255,255,.9);
}
.hero-showcase {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius); padding: 16px; backdrop-filter: blur(8px);
}
.showcase-img { width: 100%; border-radius: 10px; display: block; object-fit: cover; max-height: 320px; }
.showcase-caption {
  margin-top: 12px; text-align: center; font-size: 13px; color: rgba(255,255,255,.75);
}

/* ---------- 关于我们扩展 ---------- */
.about-links { display: flex; gap: 20px; margin-top: 20px; flex-wrap: wrap; }
.text-link { color: var(--c-primary); font-weight: 600; font-size: 15px; }
.text-link:hover { color: var(--c-primary-2); }

/* ---------- 产品分类 Tab ---------- */
.cat-tabs {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 32px;
}
.cat-tab {
  padding: 10px 18px; border-radius: 999px; border: 1px solid var(--c-line);
  background: #fff; color: var(--c-ink-2); font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all .2s;
}
.cat-tab:hover { border-color: #c3d6f5; color: var(--c-primary); }
.cat-tab.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ---------- 产品展示卡片 ---------- */
.showcase-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.showcase-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s; display: block;
}
.showcase-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c3d6f5; }
.sc-img-wrap {
  aspect-ratio: 4/3; background: var(--c-bg-alt); display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.sc-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.sc-img-wrap.no-img, .sc-placeholder { background: linear-gradient(135deg, #eef4fd, #f8fafc); }
.sc-placeholder span { font-size: 22px; font-weight: 700; color: var(--c-primary); opacity: .35; }
.showcase-card h4 { margin: 14px 16px 4px; font-size: 16px; color: var(--c-ink); }
.showcase-card p { margin: 0 16px 16px; font-size: 13px; color: var(--c-ink-2); }
.section-more { text-align: center; margin-top: 36px; }

/* ---------- 产品应用 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.app-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 28px 22px; text-align: center; transition: transform .2s, box-shadow .2s;
}
.app-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.app-icon { font-size: 36px; margin-bottom: 12px; }
.app-card h4 { margin: 0 0 8px; font-size: 17px; color: var(--c-primary); }
.app-card p { margin: 0; font-size: 14px; color: var(--c-ink-2); line-height: 1.7; }

/* ---------- 新闻中心 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.news-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 24px 20px; transition: transform .2s, box-shadow .2s;
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.news-date {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--c-accent);
  background: rgba(200,22,29,.08); padding: 4px 10px; border-radius: 6px; margin-bottom: 12px;
}
.news-card h4 { margin: 0 0 10px; font-size: 16px; line-height: 1.45; color: var(--c-ink); }
.news-card p { margin: 0; font-size: 14px; color: var(--c-ink-2); line-height: 1.65; }

/* ---------- 选型系统辅入口 ---------- */
.selection-banner { background: linear-gradient(135deg, #f0f5ff 0%, #fff 50%, #f4f7fc 100%); }
.selection-panel {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center;
  background: #fff; border: 1px solid var(--c-line); border-radius: calc(var(--radius) + 4px);
  padding: 40px 44px; box-shadow: var(--shadow);
}
.sel-tag {
  display: inline-block; font-size: 12px; font-weight: 700; color: var(--c-primary);
  background: #eef4fd; padding: 4px 10px; border-radius: 6px; margin-bottom: 12px;
}
.selection-panel h2 { margin: 0 0 14px; font-size: 28px; color: var(--c-ink); }
.selection-panel p { margin: 0 0 22px; color: var(--c-ink-2); font-size: 15px; line-height: 1.75; max-width: 560px; }
.sel-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.sel-preview { display: flex; justify-content: center; }
.mock-compact { max-width: 360px; }

/* ---------- 通用 section ---------- */
.section { padding: 78px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-head { text-align: center; margin-bottom: 46px; }
.section-head h2 { font-size: 32px; margin: 0 0 12px; color: var(--c-ink); }
.section-head h2 .en-title { color: var(--c-primary); font-weight: 600; font-size: 20px; margin-left: 6px; }
.section-head p { font-size: 16px; color: var(--c-ink-2); margin: 0; }

/* ---------- 公司简介 ---------- */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: center; }
.about-text p { font-size: 15.5px; color: var(--c-ink-2); margin: 0 0 16px; line-height: 1.9; }
.about-lead { font-weight: 600; color: var(--c-primary) !important; }
#aboutBody p { font-size: 15.5px; color: var(--c-ink-2); margin: 0 0 16px; line-height: 1.9; }
#aboutBody strong { color: var(--c-primary); }
.about-motto { font-size: 20px !important; font-weight: 700; color: var(--c-primary) !important; }
.about-motto span { display: block; font-size: 14px; color: var(--c-accent); font-weight: 600; font-style: italic; margin-top: 4px; }
.news-card { display: block; cursor: pointer; }
.empty-hint { text-align: center; color: var(--c-ink-2); grid-column: 1 / -1; padding: 24px; }
.about-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ac-item { background: var(--c-bg-alt); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 24px; text-align: center; }
.ac-item strong { display: block; font-size: 26px; color: var(--c-primary); }
.ac-item span { font-size: 13px; color: var(--c-ink-2); }

/* ---------- 功能卡片 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 28px; transition: transform .2s, box-shadow .2s; }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c3d6f5; }
.feature-icon { font-size: 30px; margin-bottom: 14px; }
.feature-card h3 { margin: 0 0 10px; font-size: 19px; color: var(--c-primary); }
.feature-card p { margin: 0; color: var(--c-ink-2); font-size: 15px; }

/* ---------- 产品系列 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.product-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 22px 18px; transition: transform .2s, box-shadow .2s; position: relative; overflow: hidden;
}
.product-card::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--c-primary); transform: scaleY(0); transition: transform .2s; transform-origin: top; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.product-card:hover::before { transform: scaleY(1); }
.product-card h4 { margin: 0 0 6px; font-size: 17px; color: var(--c-ink); }
.product-card span { display: block; font-size: 12px; color: var(--c-primary); font-weight: 600; margin-bottom: 8px; }
.product-card p { margin: 0; font-size: 13px; color: var(--c-ink-2); }

/* ---------- 下载 ---------- */
.download-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.download-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 32px 28px; text-align: center; display: flex; flex-direction: column; align-items: center; }
.dl-icon { font-size: 40px; margin-bottom: 12px; }
.download-card h3 { margin: 0 0 6px; font-size: 22px; color: var(--c-primary); }
.dl-meta { color: var(--c-accent); font-size: 13px; font-weight: 600; margin: 0 0 14px; }
.dl-desc { color: var(--c-ink-2); font-size: 14px; margin: 0 0 22px; min-height: 60px; }
.download-card .btn { margin-bottom: 10px; }
.btn-outline { border-color: var(--c-line); color: var(--c-primary); }
.btn-outline:hover { border-color: var(--c-primary); background: var(--c-bg-alt); }
.dl-version { font-size: 12px; color: var(--c-ink-2); }
.qr { width: 130px; height: 130px; margin: 0 auto 16px; border: 1px solid var(--c-line); border-radius: 12px; padding: 8px; }
.qr img { width: 100%; height: 100%; }
.dl-store { display: flex; gap: 10px; }

/* ---------- 资质认证 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.cert-item {
  background: #fff; border: 1px solid var(--c-line); border-left: 4px solid var(--c-primary);
  border-radius: 10px; padding: 18px 20px; font-size: 15px; font-weight: 500; color: var(--c-ink);
  transition: transform .2s, box-shadow .2s;
}
.cert-item:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.contact-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 28px; text-align: center; }
.contact-icon { font-size: 30px; margin-bottom: 12px; }
.contact-card h4 { margin: 0 0 8px; font-size: 16px; color: var(--c-ink-2); }
.contact-card p { margin: 0; font-size: 16px; font-weight: 600; word-break: break-all; color: var(--c-ink); }
.contact-card .contact-sub { font-size: 13px; font-weight: 500; color: var(--c-ink-2); margin-top: 4px; }

/* ---------- 页脚 ---------- */
.footer { background: #0f2c66; color: #c3d0e8; padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-logo { width: 38px; height: 38px; background: #fff; border-radius: 8px; padding: 3px; }
.fb-name { color: #fff; font-weight: 700; font-size: 16px; }
.fb-en { font-size: 12px; color: #93a6cc; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: #c3d0e8; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-copy { font-size: 13px; color: #7e93bd; width: 100%; text-align: center; border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; margin-top: 6px; }
.footer-copy a { color: #93a6cc; }
.footer-copy a:hover { color: #fff; }
.footer-friend-links {
  width: 100%; display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 8px 16px; padding: 14px 0 4px; font-size: 13px;
}
.footer-friend-label { color: #93a6cc; }
.footer-friend-links a { color: #c3d0e8; }
.footer-friend-links a:hover { color: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .showcase-grid { grid-template-columns: repeat(3, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1100px) {
  .nav-inner { gap: 20px; }
  .nav-item { padding: 8px 12px; font-size: 14px; }
  .brand-name { font-size: 17px; }
}
@media (max-width: 900px) {
  :root { --header-h: 84px; }
  .header-topbar { display: none; }
  .hero-inner, .hero-company-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-title { font-size: 34px; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .selection-panel { grid-template-columns: 1fr; padding: 28px 24px; }
  .feature-grid, .download-grid, .contact-grid { grid-template-columns: 1fr 1fr; }
  .nav-inner {
    display: flex; flex-wrap: wrap; align-items: center;
    min-height: 68px; gap: 12px;
  }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: #fff; border-bottom: 1px solid var(--c-line);
    max-height: 0; overflow: hidden; transition: max-height .3s ease;
    justify-content: flex-start; padding: 0;
    box-shadow: 0 12px 24px rgba(15, 44, 102, .06);
  }
  .nav-links.open { max-height: 480px; }
  .nav-item, .nav-item-cta {
    width: 100%; margin: 0; border-radius: 0; text-align: left;
    padding: 14px 24px; border-top: 1px solid var(--c-line);
  }
  .nav-item::after { display: none; }
  .nav-item-cta { box-shadow: none; border-radius: 0; }
  .nav-toggle { display: flex; }
  .page-layout { grid-template-columns: 1fr; gap: 20px; }
  .page-sidebar { position: static; }
  .sidebar-nav {
    display: flex; flex-wrap: wrap; gap: 8px; padding: 12px;
  }
  .sidebar-link {
    flex: 1 1 auto; min-width: calc(50% - 8px); border-left: none;
    border: 1px solid var(--c-line); justify-content: center;
  }
  .sidebar-link.is-active { border-color: #c3d6f5; }
  .sidebar-arrow { display: none; }
  .media-row-item { flex-direction: column; }
  .media-row-thumb { width: 100%; min-width: 0; min-height: 160px; }
  .media-row-body { padding: 16px 20px 20px; }
  .media-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .product-grid { grid-template-columns: 1fr 1fr; }
  .showcase-grid { grid-template-columns: 1fr 1fr; }
  .news-grid, .app-grid { grid-template-columns: 1fr; }
  .cat-tabs { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 6px; }
  .cert-grid { grid-template-columns: 1fr 1fr; }
  .feature-grid, .download-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-cards { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 28px; }
  .hero-slogan { grid-template-columns: 1fr; }
  .hero-slogan .en { margin-bottom: 6px; }
  .section { padding: 56px 0; }
  .hero-stats { gap: 22px; }
  .footer-inner { flex-direction: column; text-align: center; }
}

/* ---------- 轮播占位 / 渐变 ---------- */
.slide-placeholder {
  background: linear-gradient(135deg, #0f2c66 0%, #1a3f8f 45%, #2b5fc4 100%);
}
.slide-tone-0 .slide-placeholder { background: linear-gradient(135deg, #0f2c66, #2b5fc4); }
.slide-tone-1 .slide-placeholder { background: linear-gradient(135deg, #122e6b, #3d6fd4); }
.slide-tone-2 .slide-placeholder { background: linear-gradient(135deg, #1a3f8f, #4a7fe0); }
.hero-carousel .btn-outline {
  background: transparent; border-color: rgba(255,255,255,.75); color: #fff;
}
.hero-carousel .btn-outline:hover { background: rgba(255,255,255,.12); }

/* ---------- 产品 Tab 面板 ---------- */
.product-panel { display: none; }
.product-panel.active { display: grid; }

/* ---------- 应用图标 ---------- */
.app-icon-wrap {
  width: 56px; height: 56px; border-radius: 14px; margin: 0 auto 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700; color: #fff;
}
.app-icon-wrap.tone-a { background: linear-gradient(135deg, #2b5fc4, #5b9cf5); }
.app-icon-wrap.tone-b { background: linear-gradient(135deg, #1a3f8f, #3d6fd4); }
.app-icon-wrap.tone-c { background: linear-gradient(135deg, #c8161d, #e85a5f); }
.app-icon-wrap.tone-d { background: linear-gradient(135deg, #0f2c66, #2b5fc4); }

/* ---------- 资质卡片增强 ---------- */
.cert-item {
  display: flex; align-items: center; gap: 12px; min-height: 64px;
}
.cert-item-link { color: inherit; transition: transform .2s, box-shadow .2s; }
.cert-item-link:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.cert-icon { width: 40px; height: 40px; object-fit: contain; flex-shrink: 0; }

/* ---------- 内页 ---------- */
.page-hero {
  position: relative; min-height: 168px; display: flex; align-items: flex-end;
  color: #fff; padding: 72px 0 32px; overflow: hidden;
  background: linear-gradient(160deg, var(--c-primary-dark) 0%, var(--c-primary) 55%, var(--c-primary-2) 100%);
}
.page-hero.has-banner .page-hero-bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  filter: brightness(.42);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { margin: 0 0 8px; font-size: 30px; font-weight: 800; letter-spacing: .3px; }
.page-hero p { margin: 0; color: rgba(255,255,255,.88); max-width: 720px; font-size: 15px; }
.page-hero-article { min-height: 180px; }
.page-hero-article h1 { font-size: 28px; max-width: 900px; }

.page-breadcrumb-bar {
  background: #fff; border-bottom: 1px solid var(--c-line);
  padding: 14px 0;
}
.page-breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
  font-size: 13px; color: var(--c-ink-2);
}
.page-breadcrumb a { color: var(--c-ink-2); transition: color .2s; }
.page-breadcrumb a:hover { color: var(--c-primary); }
.page-breadcrumb .sep { opacity: .45; }
.page-breadcrumb .current { color: var(--c-ink); font-weight: 600; }

.page-main { padding: 40px 0 72px; min-height: 40vh; background: var(--c-bg-alt); }
.page-layout {
  display: grid; grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px; align-items: start;
}

.page-sidebar { position: sticky; top: calc(var(--header-h) + 20px); }
.sidebar-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; box-shadow: 0 4px 20px rgba(26, 63, 143, .05);
}
.sidebar-head {
  padding: 16px 20px; border-bottom: 1px solid var(--c-line);
  background: linear-gradient(180deg, #fafcff, #fff);
}
.sidebar-title {
  font-size: 15px; font-weight: 700; color: var(--c-primary-dark);
  letter-spacing: .5px;
}
.sidebar-nav { padding: 8px; }
.sidebar-link {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 12px 14px; border-radius: 10px; color: var(--c-ink-2);
  font-size: 14px; font-weight: 500; transition: all .2s;
  border-left: 3px solid transparent;
}
.sidebar-link:hover {
  color: var(--c-primary); background: var(--c-bg-alt);
  border-left-color: rgba(43, 95, 196, .35);
}
.sidebar-link.is-active {
  color: var(--c-primary); font-weight: 700;
  background: linear-gradient(90deg, rgba(26, 63, 143, .08), rgba(26, 63, 143, .02));
  border-left-color: var(--c-primary-2);
}
.sidebar-arrow { width: 16px; height: 16px; opacity: .35; flex-shrink: 0; }
.sidebar-link.is-active .sidebar-arrow { opacity: .7; color: var(--c-primary); }

.page-content { min-width: 0; }
.page-body {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 36px 40px; font-size: 16px; line-height: 1.85;
  box-shadow: 0 4px 20px rgba(26, 63, 143, .04);
}
.page-body-compact { margin-bottom: 24px; padding: 28px 32px; }
.page-body h3 { color: var(--c-primary); margin: 24px 0 10px; }
.page-layout-full { display: block; }
.page-content-full { min-width: 0; }

.page-media-grid { margin-top: 0; }
.page-media-list {
  display: flex; flex-direction: column; gap: 16px;
}
.media-row-item {
  display: flex; gap: 20px; align-items: stretch;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s;
}
a.media-row-item:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: #c3d6f5; }
.media-row-thumb {
  width: 280px; min-width: 280px; aspect-ratio: auto; min-height: 180px;
}
.media-row-body { flex: 1; padding: 24px 24px 24px 0; display: flex; flex-direction: column; justify-content: center; }
.media-row-body h4 { margin: 0 0 10px; font-size: 18px; color: var(--c-primary); }
.media-row-body p { margin: 0; font-size: 15px; color: var(--c-ink-2); line-height: 1.75; }

.media-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.media-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s; display: block;
}
.media-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.media-card .sc-img-wrap { aspect-ratio: 16/10; }
.media-card h4 { margin: 16px 18px 6px; font-size: 17px; color: var(--c-primary); }
.media-card p { margin: 0 18px 18px; font-size: 14px; color: var(--c-ink-2); line-height: 1.7; }

.page-showcase { margin-top: 0; }
.page-cat-tabs { margin-bottom: 20px; }

.page-body img { max-width: 100%; height: auto; border-radius: 8px; }
.page-body table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.page-body table td, .page-body table th { border: 1px solid var(--c-line); padding: 8px 12px; }
.page-news-grid { margin-top: 0; }
.empty-inline { color: var(--c-ink-2); margin: 0; }
.news-back { display: inline-block; margin-bottom: 12px; color: rgba(255,255,255,.9); }
.news-meta { font-size: 14px; color: rgba(255,255,255,.75); margin-top: 8px; }
.news-cover { width: 100%; max-height: 360px; object-fit: cover; border-radius: 10px; margin-bottom: 24px; }
.empty-hint {
  grid-column: 1 / -1; text-align: center; color: var(--c-ink-2);
  padding: 32px; background: #fff; border: 1px dashed var(--c-line); border-radius: var(--radius);
}
.btn-outline { border: 1px solid var(--c-line); color: var(--c-primary); background: #fff; }
.btn-outline:hover { border-color: var(--c-primary); background: var(--c-bg-alt); }