/* =============================================================================
   智慧扬外 · 站点样式
   对应老项目的 Content/css + Views/Shared/_Layout.cshtml 内联样式，
   迁移到 ASP.NET Core 后统一放在这里。
   ============================================================================= */

:root {
  --brand-blue: #1f6fd0;
  --brand-blue-dark: #17569f;
  --brand-green: #12805c;
  --text-main: #1f2d3d;
  --text-muted: #6b7c93;
  --card-shadow: 0 24px 60px rgba(23, 62, 112, 0.12);
}

html {
  position: relative;
  min-height: 100%;
  font-size: 14px;
  -webkit-text-size-adjust: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  color: var(--text-main);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  background: #f5f9fe;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-blue);
  text-decoration: none;
}

a:hover {
  color: var(--brand-blue-dark);
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.1rem #fff, 0 0 0 0.25rem #258cfb;
}

/* ------------------------------------------------------------------ 顶栏 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(31, 111, 208, 0.08);
  box-shadow: 0 2px 16px rgba(23, 62, 112, 0.06);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
}

.site-header .navbar {
  padding: 0.7rem 0;
}

.site-header__inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
}

.site-brand img {
  width: auto;
  max-width: 100%;
  height: 46px;
  transition: opacity 0.25s ease;
}

.site-brand:hover img {
  opacity: 0.82;
}

/* ------------------------------------------------------------------ 主体 */

.site-main {
  display: flex;
  flex: 1 0 auto;
  flex-direction: column;
}

.page-simple {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 20px;
}

/* ------------------------------------------------------------ 首页主视觉 */

.home-hero {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: center;
  padding: clamp(32px, 6vw, 80px) 20px;
  overflow: hidden;
  background:
    radial-gradient(900px 460px at 12% -6%, rgba(31, 111, 208, 0.16), transparent 62%),
    radial-gradient(760px 420px at 90% 14%, rgba(18, 128, 92, 0.16), transparent 60%),
    linear-gradient(180deg, #f8fbff 0%, #eef6f2 100%);
}

.home-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 111, 208, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 111, 208, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 78%);
}

.home-card {
  position: relative;
  z-index: 1;
  width: min(600px, 100%);
  padding: clamp(32px, 5vw, 56px) clamp(22px, 4vw, 52px);
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 28px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: home-card-rise 0.7s cubic-bezier(0.22, 0.7, 0.3, 1) both;
}

.home-card__badge {
  /* 徽标自己占一行居中，避免和下面的 logo 挤在同一行 */
  display: block;
  width: fit-content;
  margin: 0 auto clamp(18px, 2.4vw, 26px);
  padding: 6px 16px;
  color: var(--brand-blue-dark);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  background: rgba(31, 111, 208, 0.09);
  border-radius: 999px;
}

.home-card__logo-link {
  display: inline-block;
  line-height: 0;
}

.home-card__logo {
  width: 231px;
  max-width: 78vw;
  height: auto;
  filter: drop-shadow(0 6px 14px rgba(31, 111, 208, 0.18));
  transition: transform 0.35s cubic-bezier(0.22, 0.7, 0.3, 1), filter 0.35s ease;
}

.home-card__logo-link:hover .home-card__logo,
.home-card__logo-link:focus-visible .home-card__logo {
  filter: drop-shadow(0 12px 22px rgba(31, 111, 208, 0.26));
  transform: translateY(-4px) scale(1.03);
}

.home-card__desc {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.9;
}

.home-card__enter {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-top: clamp(26px, 3.4vw, 38px);
  padding: 14px 40px;
  color: #fff;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-green) 100%);
  border-radius: 999px;
  box-shadow: 0 14px 30px rgba(31, 111, 208, 0.28);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.home-card__enter span {
  transition: transform 0.25s ease;
}

.home-card__enter:hover,
.home-card__enter:focus-visible {
  color: #fff;
  filter: brightness(1.04);
  box-shadow: 0 20px 38px rgba(31, 111, 208, 0.34);
  transform: translateY(-3px);
}

.home-card__enter:hover span {
  transform: translateX(4px);
}

/* ------------------------------------------------------------------ 页脚 */

.site-footer {
  padding: 18px 20px 24px;
  color: #8a97a8;
  font-size: 0.82rem;
  text-align: center;
  background: transparent;
}

.site-footer p {
  margin: 0;
}

/* ------------------------------------------------------------------ 动画 */

@keyframes home-card-rise {
  from {
    opacity: 0;
    transform: translateY(22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .home-card {
    animation: none;
  }

  .home-card__logo,
  .home-card__enter,
  .home-card__enter span {
    transition: none;
  }
}

/* ------------------------------------------------------------ 小屏适配 */

@media (max-width: 575.98px) {
  .site-brand img {
    height: 34px;
  }

  .home-card {
    border-radius: 22px;
  }

  .home-card__badge {
    letter-spacing: 0.1em;
  }

  .home-card__enter {
    width: 100%;
    justify-content: center;
  }
}