:root {
  --panel-width: min(1280px, calc(100vw - 56px));
  --card-width: 280px;
  --paper: rgba(245, 246, 248, 0.8);
  --paper-border: rgba(255, 255, 255, 0.55);
  --ink: #231f1b;
  --muted: #6f6b67;
  --accent: #d80000;
  --accent-deep: #a80000;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  background: #7b8ca5;
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

.landing-page {
  min-height: 100vh;
}

.hero-shell {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
  padding: 42px 28px 34px;
  background: url("./assets/top_bg.jpg") center top / 100% auto no-repeat;
  background-color: #7085a4;
}

.hero-backdrop {
  display: none;
}

.mist {
  display: none;
}

.mist-left {
  left: -6%;
}

.mist-right {
  right: -4%;
}

.server-panel {
  position: relative;
  z-index: 1;
  width: var(--panel-width);
  padding: 18px 22px 34px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: linear-gradient(to bottom, rgba(207, 216, 230, 0.14), rgba(228, 234, 241, 0.28));
  backdrop-filter: blur(2px);
}

.server-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 34px;
  align-items: stretch;
}

.server-card {
  position: relative;
  overflow: hidden;
  min-height: 202px;
  padding: 28px 24px 24px;
  border: 1px solid var(--paper-border);
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.82), rgba(235, 239, 244, 0.78));
  box-shadow: 0 20px 36px rgba(31, 39, 51, 0.08);
  text-align: center;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease;
}

.server-card:hover {
  transform: translateY(-6px);
  background: linear-gradient(180deg, var(--accent), var(--accent-deep));
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  box-shadow: 0 22px 44px rgba(125, 0, 0, 0.32);
}

.server-ribbon {
  position: absolute;
  top: 10px;
  left: -32px;
  width: 108px;
  padding: 4px 0;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  transform: rotate(-45deg);
}

.server-ribbon.is-recommend {
  background: #1ab63e;
}

.server-ribbon.is-new {
  background: #d80000;
}

.server-time {
  margin: 0 0 16px;
  font-size: 16px;
  color: #0e0e0e;
}

.server-time::before {
  content: "";
  display: inline-block;
  width: 11px;
  height: 5px;
  margin-right: 8px;
  vertical-align: middle;
  background: #e01e36;
}

.server-card:hover .server-time,
.server-card:hover .server-desc,
.server-card:hover .server-cta {
  color: #fff;
}

.server-card:hover .server-time::before {
  background: #fff;
}

.server-title {
  margin: 0 0 18px;
  font-family: "STKaiti", "KaiTi", "Microsoft YaHei UI", serif;
  font-size: clamp(24px, 2.2vw, 34px);
  font-weight: 400;
  line-height: 1.15;
  color: inherit;
}

.server-desc {
  margin: 0 0 18px;
  font-size: 14px;
  color: var(--muted);
}

.server-cta {
  font-size: 18px;
  color: #ff0f0f;
}

.site-footer {
  margin-top: 36px;
  text-align: center;
  color: #2d2d2d;
  font-size: 14px;
  line-height: 1.8;
}

@media (max-width: 720px) {
  .hero-shell {
    align-items: center;
    padding: 18px 14px 24px;
  }

  .server-panel {
    width: min(100%, 540px);
    padding: 16px 14px 24px;
  }

  .server-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .server-card {
    min-height: 172px;
    padding: 24px 18px 20px;
  }

  .site-footer {
    margin-top: 24px;
  }
}