/* Shared platform tokens — Orbmare / 奥布默尔 */
:root {
  --blue: #1a4db3;
  --blue-deep: #0f3a8f;
  --blue-soft: #e8f0ff;
  --ink: #1c2430;
  --muted: #5b6776;
  --line: #e6ebf2;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --danger: #e11d2e;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(28, 52, 96, 0.08);
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --brand-name: "Orbmare";
  --brand-name-zh: "奥布默尔";
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.platform-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  min-width: 0;
  text-decoration: none;
}

.platform-brand-mark {
  flex: 0 0 auto;
  color: var(--blue);
  display: grid;
}

.platform-brand-text {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.platform-brand-text strong {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--blue);
}

.platform-brand-text em {
  font-style: normal;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1.25rem;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--blue-deep);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
  background: var(--surface);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-soft);
}