/* ============================================================
   长板厚雪 站点样式表（数值取自参考站实测）
   ============================================================ */

/* ===== 基础 ===== */
* { box-sizing: border-box; margin: 0; padding: 0; }
ul { list-style: none; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.4;
  color: #161513;
  background: #fff;
  min-width: 280px;
}
a, a:link, a:visited { color: #006b8f; text-decoration: none; }
a:hover { color: #e76f00; }
img { max-width: 100%; height: auto; display: block; }
figure { margin: 0; }
h1, h2, h3, h4 { font-weight: 400; }
a:focus-visible, .navbar-toggler:focus-visible { outline: 2px solid #f29111; outline-offset: 2px; }

/* ===== 顶部导航 ===== */
#header-slot { background: #3a75b0; }
.container-fluid {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.navbar { display: flex; padding: 5px 24px; min-height: 58px; align-items: center; }
#navbar-logo a {
  display: flex;
  align-items: center;
  height: 32px;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  white-space: nowrap;
}
#navbar-logo a:hover { color: #fff; }
#menu { position: absolute; opacity: 0; width: 1px; height: 1px; }
.navbar-toggler { display: none; align-items: center; cursor: pointer; }
.bi { color: #fff; }
.navbar-collapse {
  flex-grow: 1;
  align-items: center;
  max-height: 0;
  overflow: hidden;
  transition: max-height 500ms ease-out;
}
#menu:checked ~ .navbar-collapse { max-height: 800px; }
.navbar-nav { display: flex; flex-direction: column; padding: 5px 0 0 20px; }
.nav-link, .nav-link:link, .nav-link:visited {
  display: block;
  padding: 5px 10px;
  margin: 0 10px;
  color: #fff;
  font-size: 22px;
  font-weight: 500;
  line-height: 33px;
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover { color: #e76f00; }
.mr-auto { margin-right: auto !important; }
.justify-content-between { justify-content: space-between !important; }

@media (min-width: 770px) {
  .navbar-toggler { display: none; }
  .navbar-collapse { display: flex; flex-basis: auto; max-height: none; overflow: visible; }
  .navbar-nav { flex-direction: row; align-items: center; }
}
@media (max-width: 769px) {
  .navbar-toggler { display: flex; }
  .navbar-collapse { flex-basis: 100%; margin-top: 4px; }
  .navbar-nav { padding: 0; }
  .nav-link, .nav-link:link, .nav-link:visited {
    padding: 12px 5px;
    margin: 0;
    line-height: 33px;
    border-top: 1px solid rgba(255,255,255,.15);
  }
}

/* ===== 布局容器 ===== */
.cwidth { width: 100%; padding: 0 24px; }
.cgrid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  column-gap: 32px;
  row-gap: 24px;
  max-width: 1008px;
  margin: 0 auto;
}
.cgrid-6 { grid-column: auto / span 6; }
@media (min-width: 1200px) { .cwidth { padding-left: 0; padding-right: 0; } }

/* ===== Hero 横幅 ===== */
.sh01 { background: #04536f; color: #fff; padding: 48px 0; }
.sh01 .cgrid { align-items: center; }
.sh01 header.cgrid-6 { grid-row: 2; }
.sh01media { grid-column: 7 / span 6; grid-row: 1 / span 4; align-self: center; }
.sh01media img { max-width: 100%; height: auto; }
.hdg-xl { font-size: 40px; font-weight: 300; line-height: 52px; color: #fff; }
.sh01 h1::after {
  content: "";
  display: block;
  width: 40px;
  height: 6px;
  background: #f29111;
  margin-top: 12px;
}
.sh01 .sh01w1 { grid-row: 3; margin-top: 24px; }
.sh01 .sh01w1 p { color: #fff; font-size: 16px; line-height: 22.4px; }

/* ===== 工具/资料下载卡片 ===== */
.sc04 { background: #f1efed; }
.sc04w1 { padding-top: 48px; padding-bottom: 96px; }
.sc04cards.cgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sc04card {
  background: #fff;
  border: 1px solid rgba(63,58,54,.2);
  border-radius: 8px;
  padding: 24px;
}
.hdg-xsm { font-size: 20px; font-weight: 600; line-height: 28px; margin-bottom: 8px; }
.sc04cards p { margin: 0 0 10px; font-size: 16px; }
.cta { margin: 12px 0; }
.obttn2, .obttn2:link, .obttn2:visited {
  display: inline-block;
  padding: 10px 16px;
  background: #04536f;
  color: #fff;
  font-size: 16px;
  line-height: 24px;
  border-radius: 4px;
  text-decoration: none;
}
.cta .obttn2:hover { background: #053242; color: #fff; }

/* ===== 页脚 ===== */
.u10v0 { background: #ebebeb; }
.u10w1 { max-width: 1200px; margin: 0 auto; padding: 24px; }
.u10w5 { display: flex; flex-direction: column; align-items: center; }
.u10-links { text-align: center; }
.u10-links > div { margin-bottom: 8px; }
.u10-links a { color: #2d5986; font-size: 11.2px; padding: 0 9px 0 7px; }
.u10-links a:hover { color: #2d5986; text-decoration: underline; }
.u10-links p { display: flex; flex-wrap: wrap; justify-content: center; }
.u10-links p a + a { border-left: 1px solid #2d5986; }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .sh01 { padding: 20px 0; }
  .sc04w1 { padding: 20px 0; }
}
@media (max-width: 1019px) {
  .cgrid-6, .sh01media { grid-column: 1 / -1; }
  .sh01 header.cgrid-6, .sh01 .sh01w1, .sh01media { grid-row: auto; }
  .sh01media { margin: 24px 0 8px; }
  .sh01 .cgrid { align-items: start; }
  .sc04cards.cgrid { grid-template-columns: 1fr; }
}

/* 动效弱化 */
@media (prefers-reduced-motion: reduce) {
  .navbar-collapse { transition: none; }
}