:root {
  --ink: #111827;
  --muted: #596174;
  --line: rgba(103, 82, 234, 0.14);
  --purple: #6847f5;
  --card: rgba(255, 255, 255, 0.9);
  --shadow: 0 22px 64px rgba(74, 67, 170, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  max-width: 100%;
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  color: var(--ink);
  background: #fbfcff;
}

body {
  overflow-x: clip;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

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

/* 与官网 .content-section / .nav 同宽 */
.blog-main,
.site-footer {
  width: min(1240px, calc(100% - 80px));
  margin-left: auto;
  margin-right: auto;
}

.blog-main {
  padding: 48px 0 80px;
}

.blog-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(104, 71, 245, 0.08);
  color: var(--purple);
  font-size: 13px;
  font-weight: 750;
  margin-bottom: 18px;
}

.blog-main h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  font-weight: 900;
}

.blog-lead {
  margin: 0 0 36px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
  max-width: 860px;
}

.post-list {
  display: grid;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-card {
  display: block;
  padding: 24px 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.post-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 48px rgba(74, 67, 170, 0.16);
}

.post-list,
.article-body {
  overflow-wrap: anywhere;
}

.post-card time {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}

.post-card h2 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.35;
  color: #1a1f36;
}

.post-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.post-card .read-more {
  display: inline-block;
  margin-top: 14px;
  color: var(--purple);
  font-size: 14px;
  font-weight: 800;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-bottom: 28px;
  font-size: 14px;
  color: var(--muted);
}

.article-body {
  padding: 32px 36px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  box-shadow: var(--shadow);
  line-height: 1.85;
  font-size: 16px;
  color: #2a3145;
}

.article-body h2 {
  margin: 36px 0 14px;
  font-size: 24px;
  line-height: 1.3;
  color: #1a1f36;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body p,
.article-body ul {
  margin: 0 0 16px;
}

.article-body ul {
  padding-left: 1.25em;
}

.article-body a {
  color: var(--purple);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--purple);
}

.site-footer {
  margin-top: auto;
  padding: 28px 0 36px;
  border-top: 1px solid rgba(117, 112, 184, 0.12);
  background: transparent;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  box-sizing: border-box;
}

.site-footer a {
  color: var(--purple);
  font-weight: 700;
}

@media (max-width: 1180px) {
  .blog-main,
  .site-footer {
    width: min(calc(100% - 48px), 1100px);
  }
}

@media (max-width: 920px) {
  .blog-main,
  .site-footer {
    width: min(calc(100% - 40px), 680px);
  }
}

@media (max-width: 768px) {
  .blog-main,
  .site-footer {
    width: 100%;
    max-width: 100%;
    padding-left: 16px;
    padding-right: 16px;
    box-sizing: border-box;
  }

  .blog-main {
    padding-top: 32px;
    padding-bottom: 56px;
  }

  .article-body {
    padding: 22px 20px;
  }
}