:root {
  --site-font: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
  --brand-blue: #107dff;
  --brand-title-weight: 700;
  --brand-title-spacing: .2px;
}

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

html,
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  color: #12213c;
  background: #f5f5f5;
  font-family: var(--site-font);
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
}

a {
  color: #107dff;
  text-decoration: none;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

img,
video {
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
  outline: none;
}

select {
  appearance: none;
  -moz-appearance: none;
  -webkit-appearance: none;
}

ul,
li {
  margin: 0;
  padding: 0;
  list-style: none;
}

i,
em {
  font-style: normal;
}

input::placeholder,
textarea::placeholder {
  color: #999;
  font-weight: 400;
}

.main {
  width: min(1400px, calc(100% - 56px));
  margin: 0 auto;
}

.header {
  height: 60px;
  background: #fff;
}

.header .main {
  display: flex;
  width: min(1400px, calc(100% - 56px));
  height: 100%;
  align-items: center;
}

.header .main .logo {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #107DFF;
  font-family: var(--site-font);
  font-size: 18px;
  font-weight: bold;
  line-height: 34px;
  letter-spacing: .2px;
}

.header .main .logo span {
  display: inline-block;
  color: #107DFF;
  font-size: 18px;
  font-weight: bold;
  line-height: 34px;
}

.header .main .logo img {
  display: block;
  width: 46px;
  height: auto;
  object-fit: contain;
  object-position: left center;
}

.header .main .nav {
  display: flex;
  flex: 1;
  height: 100%;
  align-items: center;
  justify-content: center;
}

.header .main .nav a {
  display: flex;
  height: 100%;
  align-items: center;
  padding: 0 21px;
  color: #333;
  font-size: 16px;
  font-weight: 700;
}

.header .main .nav a:hover,
.header .main .nav a.active {
  color: #107dff;
}

.header .main .nav a.active {
  position: relative;
  font-weight: 700;
}


.header .main .logo {
  display: flex;
  align-items: center;
  font-size: 18px;
  font-weight: 400;
  color: #107dff;
}

.header .main .nav a.active::after {
  position: absolute;
  bottom: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 3px;
  content: "";
  border-radius: 10px;
  background: #107dff;
}

.footer {
  min-height: 70px;
  margin-top: 58px;
  background: #0d1426;
}

.footer .main {
  display: flex;
  min-height: 70px;
  align-items: center;
  justify-content: center;
  color: #8d8d8f;
  font-size: 14px;
}

.footer .copy {
  width: 100%;
  text-align: center;
}

/* 统一品牌字体视觉 */
body,
button,
input,
select,
textarea {
  font-family: var(--site-font);
  letter-spacing: 0;
}

h1,
h2,
h3,
.header .main .logo,
.header .main .logo span,
.site-header .logo,
.site-header .logo span,
.products-header .logo,
.products-header .logo span,
.login-content h1 {
  color: var(--brand-blue);
  font-family: var(--site-font);
  font-weight: var(--brand-title-weight);
  letter-spacing: var(--brand-title-spacing);
}

.header .main .logo,
.header .main .logo span,
.site-header .logo,
.site-header .logo span,
.products-header .logo,
.products-header .logo span {
  font-size: 18px;
  line-height: 34px;
}

.header .main .nav a,
.site-header .nav a {
  font-family: var(--site-font);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
}

.section-kicker {
  color: var(--brand-blue);
  font-family: var(--site-font);
  font-weight: 800;
  letter-spacing: .08em;
}