/* 梦信 Moonchat 官网 — Design Tokens（对齐 client-ui tokens.css） */
:root {
  --mp-ambient-bg: #ffffff;
  --mp-page-muted-bg: #f7f7f7;
  --mp-surface-bg: #ffffff;
  --mp-color-border: rgba(25, 25, 25, 0.06);
  --mp-color-divider: rgba(25, 25, 25, 0.08);
  --text-color: #1f1f1f;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --app-primary: #fee500;
  --app-primary-hover: #f6d800;
  --mp-color-on-primary: #191919;
  --mp-color-primary-container: rgba(254, 229, 0, 0.18);
  --accent-romantic: #5e1781;
  --accent-romantic-soft: rgba(94, 23, 129, 0.08);
  --mp-action-primary-shadow: 0 10px 22px rgba(254, 229, 0, 0.24);
  --mp-wallpaper-bg:
    radial-gradient(circle at 18% 16%, rgba(255, 255, 255, 0.98), transparent 36%),
    radial-gradient(circle at 82% 20%, rgba(254, 229, 0, 0.04), transparent 32%),
    radial-gradient(circle at 50% 100%, rgba(94, 23, 129, 0.03), transparent 40%),
    linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
  --mp-dock-glass-bg: color-mix(in srgb, var(--mp-surface-bg) 34%, transparent);
  --mp-dock-glass-border: color-mix(in srgb, #ffffff 54%, rgba(25, 25, 25, 0.1));
  --mp-dock-blur: 34px;
  --mp-dock-shadow:
    0 18px 44px rgba(17, 17, 17, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.36);
  --mp-card-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-xxl: 120px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --transition-fast: 150ms ease;
  --transition-normal: 280ms cubic-bezier(0.25, 0.1, 0.25, 1);
  --transition-slow: 600ms cubic-bezier(0.22, 1, 0.36, 1);
  --site-max: 1080px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-family);
  font-size: 17px;
  line-height: 1.47;
  color: var(--text-color);
  background: var(--mp-wallpaper-bg);
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--site-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-sm);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--mp-color-primary-container);
  color: color-mix(in srgb, var(--text-color) 88%, var(--app-primary));
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section-headline {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.section-subline {
  margin-top: var(--space-sm);
  max-width: 28em;
  color: var(--text-secondary);
  font-size: 19px;
  line-height: 1.5;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast);
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--app-primary);
  color: var(--mp-color-on-primary);
  box-shadow: var(--mp-action-primary-shadow);
}

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

.btn--secondary {
  background: var(--mp-surface-bg);
  color: var(--text-color);
  border: 1px solid var(--mp-color-border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.btn--dark {
  background: var(--text-color);
  color: #fff;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .section-subline {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}