/* 第3套 zh · 窗口层叠 Desktop windows */
:root {
  --desk: #c5cdd6;
  --desk-2: #b7c0cb;
  --win: #f4f6f8;
  --bar: #3a5a82;
  --bar-2: #2d4768;
  --ink: #243040;
  --muted: #5b6b7c;
  --line: #cfd6de;
  --accent: #3a7ca5;
  --ok: #2b7a4b;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% 10%, rgba(58, 90, 130, 0.08), transparent 28%),
    linear-gradient(180deg, var(--desk), var(--desk-2));
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  min-height: 100vh;
}

a { color: var(--accent); }
a:hover { color: #24597a; }
svg { display: inline-block; vertical-align: middle; }
.wrap { width: min(1040px, calc(100% - 1.6rem)); margin: 0 auto; }

.taskbar {
  background: linear-gradient(180deg, #4a6b96, var(--bar));
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 30;
  box-shadow: 0 2px 0 #1f334c;
}
.taskbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  gap: 0.8rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}
.brand svg { width: 24px; height: 24px; }
.nav { display: flex; gap: 0.3rem; }
.nav a {
  padding: 0.38rem 0.8rem;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  text-decoration: none;
  border-radius: 4px 4px 0 0;
  font-size: 0.92rem;
}
.nav a:hover { background: rgba(255, 255, 255, 0.22); }
.nav a.on { background: var(--win); color: var(--bar); }

.window {
  margin: 1.15rem auto;
  background: var(--win);
  border: 1px solid #8ea0b4;
  box-shadow: 8px 10px 0 rgba(36, 48, 64, 0.12);
}
.titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.38rem 0.7rem;
  background: linear-gradient(180deg, #5b7aa3, var(--bar));
  color: #fff;
  font-size: 0.88rem;
}
.dots { display: flex; gap: 0.35rem; }
.dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #d9e2ec;
  display: block;
}
.dots i:nth-child(1) { background: #e7c07b; }
.dots i:nth-child(2) { background: #8fbe8a; }
.win-body { padding: 1.25rem 1.35rem 1.4rem; }

.hero-win h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
}
.sidewin { margin-top: 1rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0.3rem 0.4rem 0.3rem 0;
  padding: 0.58rem 1rem;
  background: var(--bar);
  color: #fff;
  text-decoration: none;
  border: 1px solid var(--bar-2);
  border-radius: 4px;
}
.btn svg { width: 16px; height: 16px; }
.btn:hover { background: var(--bar-2); color: #fff; }
.btn-ghost {
  background: #e8eef4;
  color: var(--bar);
  border-color: #c5d0dc;
}
.btn-ghost:hover { background: #dbe4ee; color: var(--bar); }

.cascade { display: grid; gap: 1rem; }
.pane-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}
.mini {
  background: #fff;
  border: 1px solid var(--line);
}
.mini .titlebar { font-size: 0.8rem; }
.mini .win-body { padding: 0.85rem 0.95rem 1rem; }
.mini h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
.mini svg { width: 18px; height: 18px; margin-right: 0.3rem; color: var(--accent); }

.dock {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.55rem;
}
.dock a, .dock span {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  padding: 0.7rem 0.55rem;
  text-align: center;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.88rem;
}
.dock strong { display: block; color: var(--bar); }

.voices article {
  background: #fff;
  border-left: 4px solid var(--accent);
  padding: 0.8rem 1rem;
  margin-bottom: 0.7rem;
}
.voices footer { color: var(--muted); font-size: 0.86rem; }

.nums {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.55rem;
}
.num {
  background: #fff;
  border: 1px solid var(--line);
  text-align: center;
  padding: 0.8rem 0.4rem;
}
.num b { display: block; font-size: 1.35rem; color: var(--bar); }

.table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.table th, .table td {
  border: 1px solid var(--line);
  padding: 0.5rem 0.65rem;
  text-align: left;
}
.table th { background: #e8eef4; }

.faq article {
  background: #fff;
  border: 1px solid var(--line);
  padding: 0.8rem 0.95rem;
  margin-bottom: 0.65rem;
}
.faq h3 { margin: 0 0 0.35rem; font-size: 1rem; }

.site-foot {
  margin-top: 1.2rem;
  padding: 1.1rem 1.2rem 1.8rem;
  background: var(--bar-2);
  color: #d5e0ec;
  font-size: 0.9rem;
}
.site-foot a { color: #fff; }
.site-foot .safe { color: #9be0b4; font-weight: 700; }
.foot-nav a { margin-right: 0.9rem; }

.nav-toggle {
  display: none;
  background: rgba(255,255,255,0.15);
  border: 1px solid #fff;
  color: #fff;
  padding: 0.28rem 0.45rem;
  cursor: pointer;
}
.nav-toggle svg { width: 18px; height: 18px; }

@media (max-width: 860px) {
  .pane-grid, .dock, .nums { grid-template-columns: 1fr 1fr; }
  .dock { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: inline-flex; }
  .nav { display: none; width: 100%; flex-direction: column; padding-bottom: 0.5rem; }
  .nav.open { display: flex; }
  .taskbar-inner { flex-wrap: wrap; }
}

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }