/* ============================================================
   超级通讯平台 · 基础样式（重置 + 全局）
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  font-size: var(--fs-14);
  color: var(--text);
  /* 桌面端：深色舞台，把手机外壳居中展示 */
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(59,130,246,0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(34,211,238,0.08), transparent 60%),
    #070A14;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }
::selection { background: var(--primary-weak); color: #fff; }

/* 滚动条（深色细滚动条） */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.10); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }
::-webkit-scrollbar-track { background: transparent; }

/* 通用工具类 */
.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }
.between { justify-content: space-between; }
.center { align-items: center; justify-content: center; }
.gap-1 { gap: var(--sp-1);} .gap-2 { gap: var(--sp-2);} .gap-3 { gap: var(--sp-3);} .gap-4 { gap: var(--sp-4);}
.grow { flex: 1; }
.muted { color: var(--text-sub); }
.faint { color: var(--text-faint); }
.ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hidden { display: none !important; }