/* Mosen 公共说明页：沿用官网暖灰画布、墨色文字与克制橙色强调。 */
:root {
  color-scheme: light;
  --page-bg: #f3f1ec;
  --page-surface: #fbfaf7;
  --page-card: #ffffff;
  --page-ink: #141411;
  --page-muted: #68675f;
  --page-line: #dedbd3;
  --page-accent: #e66320;
  --page-primary: #7b5944;
  --page-soft: #f7df9a;
  --page-shadow: 0 24px 70px rgba(40, 38, 30, 0.10);
  --page-font: "MiSans VF", "MiSans", "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 82% 4%, rgba(247, 223, 154, 0.48), transparent 32rem),
    radial-gradient(circle at 10% 28%, rgba(182, 223, 216, 0.30), transparent 28rem),
    var(--page-bg);
  color: var(--page-ink);
  font-family: var(--page-font);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.22;
  background-image: radial-gradient(rgba(23, 22, 17, 0.18) 0.55px, transparent 0.7px);
  background-size: 5px 5px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

a { color: inherit; text-underline-offset: 0.22em; }
a:hover { color: var(--page-accent); }
img { display: block; max-width: 100%; }

:focus-visible {
  outline: 3px solid var(--page-accent);
  outline-offset: 4px;
  border-radius: 8px;
}

.page-shell { width: min(100%, 980px); margin-inline: auto; padding-inline: 28px; }

.page-header { padding-top: 18px; }

.page-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 64px;
  padding: 8px 10px 8px 13px;
  border: 1px solid rgba(20, 20, 17, 0.09);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 32px rgba(49, 47, 39, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(22px) saturate(145%);
  -webkit-backdrop-filter: blur(22px) saturate(145%);
}

.page-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-right: auto;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.page-brand img { width: 37px; height: 37px; border-radius: 12px; background: #fff; }

.page-nav-links { display: flex; align-items: center; gap: 3px; }
.page-nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--page-muted);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}
.page-nav-links a[aria-current="page"] { background: var(--page-ink); color: var(--page-bg); }
.page-nav-links a:not([aria-current="page"]):hover { background: rgba(20, 20, 17, 0.06); color: var(--page-ink); }

.page-main { padding-block: clamp(3rem, 7vw, 6rem); }

.page-card {
  overflow: hidden;
  border: 1px solid rgba(20, 20, 17, 0.10);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--page-shadow);
}

.page-hero { padding: clamp(2.1rem, 6vw, 4.8rem) clamp(1.4rem, 7vw, 5.5rem) clamp(1.8rem, 4vw, 3rem); }
.page-eyebrow { margin: 0 0 14px; color: var(--page-primary); font-size: 0.72rem; font-weight: 800; letter-spacing: 0.11em; text-transform: uppercase; }
.page-hero h1 { margin: 0; font-size: clamp(2.45rem, 7vw, 4.8rem); font-weight: 850; letter-spacing: -0.065em; line-height: 1.07; }
.page-meta { margin: 18px 0 0; color: var(--page-muted); font-size: 0.9rem; font-weight: 650; }
.page-lead { max-width: 46rem; margin: 24px 0 0; color: #35342f; font-size: 1.04rem; line-height: 1.9; }

.page-content { padding: 0 clamp(1.4rem, 7vw, 5.5rem) clamp(2.5rem, 7vw, 5.5rem); }
.page-content section { padding-block: 30px; border-top: 1px solid var(--page-line); }
.page-content h2 { margin: 0 0 13px; font-size: clamp(1.25rem, 3vw, 1.55rem); font-weight: 820; letter-spacing: -0.035em; line-height: 1.35; }
.page-content p { margin: 0; color: #35342f; }
.page-content p + p { margin-top: 13px; }
.page-content ul { margin: 0; padding-left: 1.25rem; color: #35342f; }
.page-content li + li { margin-top: 10px; }
.page-content strong { color: var(--page-ink); }

.page-callout {
  display: grid;
  grid-template-columns: 10px 1fr;
  gap: 15px;
  margin-top: 18px;
  padding: 18px 20px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--page-soft) 48%, white);
}
.page-callout::before { content: ""; width: 10px; height: 10px; margin-top: 0.55em; border-radius: 50%; background: var(--page-accent); }

.page-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--page-ink);
  color: var(--page-bg);
  font-weight: 780;
  text-decoration: none;
  box-shadow: 0 9px 18px rgba(20, 20, 17, 0.16);
}
.page-email:hover { color: #fff; transform: translateY(-1px); }

.page-footer { padding-block: 28px 42px; color: var(--page-muted); font-size: 0.79rem; }
.page-footer-inner { display: flex; justify-content: space-between; gap: 18px; border-top: 1px solid var(--page-line); padding-top: 22px; }
.page-footer p { margin: 0; }
.page-footer-links { display: flex; flex-wrap: wrap; gap: 14px; }

@media (max-width: 720px) {
  .page-shell { padding-inline: 18px; }
  .page-header { padding-top: 10px; }
  .page-nav { min-height: 58px; padding: 6px 7px 6px 10px; }
  .page-brand img { width: 34px; height: 34px; border-radius: 11px; }
  .page-nav-links a { padding: 8px; font-size: 0.75rem; }
  .page-nav-links a:first-child { display: none; }
  .page-main { padding-block: 2rem 4rem; }
  .page-card { border-radius: 24px; }
  .page-hero { padding-top: 2.2rem; }
  .page-content section { padding-block: 24px; }
  .page-footer-inner { flex-direction: column; }
}

@media (prefers-reduced-motion: no-preference) {
  .page-nav-links a, .page-email { transition: color 160ms ease, background-color 160ms ease, transform 160ms ease; }
  .page-card { animation: page-in 520ms cubic-bezier(0.16, 1, 0.3, 1) both; }
  @keyframes page-in { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
}