:root {
  --color-crimson: #9b1b30;
  --color-crimson-light: #c94b60;
  --color-crimson-bg: #f8e9ec;
  --color-navy: #011f5b;
  --color-gold: #c4a35a;
  --color-parchment: #fbf7f2;
  --color-surface: #ffffff;
  --color-dark-bg: #07152f;
  --color-text-primary: #172033;
  --color-text-secondary: #4f596c;
  --color-text-muted: #778095;
  --color-text-on-dark: #ffffff;
  --font-display: Georgia, "Times New Roman", "Songti SC", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max-width-site: 1200px;
  --max-width-prose: 760px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-full: 999px;
  --shadow-card: 0 10px 30px rgba(1, 31, 91, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-parchment);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

main {
  min-height: 60vh;
}

h1,
h2,
h3,
h4 {
  color: var(--color-navy);
  font-family: var(--font-display);
  line-height: 1.25;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.8rem);
}

h2 {
  font-size: clamp(1.55rem, 3vw, 2.4rem);
}

a {
  color: var(--color-crimson);
  overflow-wrap: anywhere;
}

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

.container-site {
  width: min(100% - 3rem, var(--max-width-site));
  margin-inline: auto;
}

.container-prose,
.prose {
  width: min(100% - 3rem, var(--max-width-prose));
  margin-inline: auto;
}

.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

.card {
  overflow: hidden;
  border: 1px solid rgba(1, 31, 91, 0.08);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.72rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-weight: 650;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-crimson);
  color: #fff;
}

.btn-outline {
  border-color: rgba(1, 31, 91, 0.22);
  background: transparent;
  color: var(--color-navy);
}

.tag-chip {
  display: inline-flex;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-full);
}

.prose p,
article p {
  overflow-wrap: anywhere;
}

.prose table,
article table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

.aiw-bubble,
.aiw-panel,
.aiw-im-pick {
  display: none !important;
}

@media (max-width: 640px) {
  .container-site,
  .container-prose,
  .prose {
    width: min(100% - 2rem, var(--max-width-site));
  }

  .section {
    padding: 3rem 0;
  }
}