/* =============================================
   锐思飞鸟科技官网 - 全站公共样式
   深蓝科技风主题
   ============================================= */

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #040d2a;
  color: #fff;
  min-width: 1280px;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }

/* ── 布局 ── */
.section-inner,
.nav-inner {
  width: min(1200px, calc(100% - 80px));
  margin: 0 auto;
}

/* ── 导航 ── */
.top-nav {
  position: absolute;
  left: 0; right: 0; top: 0;
  z-index: 100;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.brand-logo { height: 32px; }
.brand-name-image { height: 20px; }
.brand img { width: auto; }
.nav-menu {
  display: inline-flex;
  align-items: center;
  gap: 48px;
}
.nav-menu a {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: color 0.2s;
}
.nav-menu a:hover { color: #fff; }
.nav-menu a.active {
  color: #1a7cff;
  font-weight: 600;
}

/* ── Hero 通用 ── */
.hero-section {
  position: relative;
  overflow: hidden;
  background: #040d2a;
}
.hero-bg {
  display: block;
  width: 100%;
  min-height: 520px;
  object-fit: cover;
}
.hero-content {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
}
.hero-content-inner {
  padding-top: 64px;
}
.hero-title-img {
  display: block;
  max-width: 560px;
  margin-bottom: 28px;
}
.hero-sub {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
  line-height: 1.6;
}
.hero-buttons { display: flex; gap: 16px; }

/* ── 按钮 ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border-radius: 6px;
  background: #1a7cff;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.85; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border-radius: 6px;
  border: 1.5px solid rgba(255,255,255,0.6);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  transition: border-color 0.2s, color 0.2s;
}
.btn-outline:hover { border-color: #fff; }

/* ── 节标题 ── */
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.section-label-line {
  display: inline-block;
  width: 4px;
  height: 20px;
  background-image: linear-gradient(0deg, #0A4FFF 0%, #27DEFF 100%);
}
.section-label span {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
}
.section-title-center {
  text-align: center;
  margin-bottom: 16px;
}
.section-title-center h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.section-title-center h2 .deco {
  display: inline-block;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, #1a7cff);
  border-radius: 2px;
}
.section-title-center h2 .deco.right {
  background: linear-gradient(90deg, #1a7cff, transparent);
}
.section-title-center .sub {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-top: 10px;
}

/* ── Tab 切换 ── */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 40px;
}
.tab-item {
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.55);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -1px;
}
.tab-item:hover { color: #fff; }
.tab-item.active {
  color: #1a7cff;
  font-weight: 700;
}

/* ── Footer ── */

.object-container {
    padding: 0;
    border: none;
    margin: 0;
    width: 100%;
    height: 100px;
    position: relative;
    overflow: hidden;
}

#footer {
    height: 100px;
    background: #0B181B;
    font-size: 16px;
}

#footer .grid {
    max-width: 1200px;
    padding-top: 40px;
    margin: 0 auto;
    text-align: center;
    font-weight: 400;
    color: #999999;
    line-height: 24px;
}

#footer .grid > a {
    color: #999999;
    display: inline-block;
    text-decoration: none;
    border-bottom: 1px solid #ddd;
}

#footer .grid .policy {
    padding: 20px 0 28px 0;
    font-size: 16px;
    color: #FFFFFF;
    line-height: 16px;
}

#footer .grid .policy > span {
    margin-right: 20px;
}

#footer .grid .address {
    color: #CCCCCC;
    line-height: 14px;
    padding-bottom: 18px;
}