:root {
  --bg: #f7f8f8;
  --surface: #ffffff;
  --surface-soft: #eef3f2;
  --surface-tint: #fbfcfc;
  --text: #1b252e;
  --text-soft: #66727d;
  --border: #e0e5e7;
  --border-strong: #c7d0d4;
  --accent: #17639a;
  --accent-strong: #185d91;
  --accent-soft: #e8f2f8;
  --green: #24745a;
  --orange: #b56b16;
  --red: #b94a48;
  --shadow: 0 14px 34px rgba(27, 37, 46, 0.045);
  --shadow-soft: 0 8px 22px rgba(27, 37, 46, 0.032);
  --radius: 8px;
  --shell: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at 50% 0%, rgba(23, 99, 154, 0.045), transparent 34%),
    linear-gradient(180deg, #fbfcfc 0%, var(--bg) 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    linear-gradient(rgba(27, 37, 46, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 37, 46, 0.022) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}

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

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  width: min(calc(100% - 40px), var(--shell));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 252, 252, 0.9);
  border-bottom: 1px solid rgba(27, 37, 46, 0.07);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.98rem;
  font-weight: 600;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(21, 95, 155, 0.22);
  border-radius: var(--radius);
  background: #fff;
  color: var(--accent);
  box-shadow: var(--shadow-soft);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a,
.header-action {
  color: var(--text-soft);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav a:hover,
.header-action:hover {
  color: var(--accent);
}

.header-action {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
}

.section {
  padding: 54px 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.45rem, 2.4vw, 2.1rem);
  line-height: 1.12;
}

.section-subtitle {
  margin: 8px 0 0;
  color: var(--text-soft);
  line-height: 1.7;
}

.muted {
  color: var(--text-soft);
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.button.secondary {
  background: #fff;
  color: var(--accent);
  border-color: rgba(21, 95, 155, 0.22);
}

.status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--text-soft);
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
}

.status.active {
  background: rgba(28, 124, 84, 0.1);
  color: var(--green);
}

.status.pending,
.status.updated {
  background: rgba(181, 107, 22, 0.12);
  color: var(--orange);
}

.status.withdrawn,
.status.paused {
  background: rgba(185, 74, 72, 0.1);
  color: var(--red);
}

.site-footer {
  margin-top: 32px;
  padding: 28px 0;
  border-top: 1px solid rgba(23, 33, 43, 0.08);
  color: var(--text-soft);
  font-size: 0.9rem;
}

.empty-state {
  padding: 28px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.54);
  color: var(--text-soft);
}

@media (max-width: 760px) {
  .shell {
    width: min(calc(100% - 28px), var(--shell));
  }

  .header-inner {
    min-height: 56px;
    gap: 12px;
  }

  .nav {
    display: none;
  }

  .brand {
    font-size: 0.86rem;
    font-weight: 500;
  }

  .brand-mark {
    width: 30px;
    height: 30px;
  }

  .header-action {
    min-height: 32px;
    padding: 0 10px;
    font-size: 0.78rem;
    font-weight: 500;
  }

  .section {
    padding: 38px 0;
  }

  .section-head {
    display: block;
  }
}