/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #2c2c2c;
  --color-text-secondary: #666666;
  --color-border: #e8e8e8;
  --color-accent: #3a6b5e;
  --color-accent-light: #f0f5f3;
  --max-width: 720px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* Header */
.site-header {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.5px;
}

.site-title:hover {
  color: var(--color-accent);
}

.site-nav {
  display: flex;
  gap: 28px;
  list-style: none;
}

.site-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
  padding: 4px 0;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
}

/* Main */
.site-main {
  flex: 1;
  padding: 48px 0;
}

/* Hero */
.hero {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 48px 40px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.hero p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Sections */
.section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 36px 40px;
  margin-bottom: 24px;
}

.section h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.section h2::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 2px;
  margin-right: 10px;
  vertical-align: middle;
}

/* About Page */
.profile-header {
  text-align: center;
  padding: 20px 0 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
}

.avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-accent-light);
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.profile-header h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.profile-header p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.info-list {
  list-style: none;
}

.info-list li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border);
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 0.92rem;
}

.info-list li:last-child {
  border-bottom: none;
}

.info-label {
  color: var(--color-text-secondary);
  min-width: 70px;
  flex-shrink: 0;
}

.info-value {
  color: var(--color-text);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 4px;
  font-size: 0.85rem;
}

/* Footer */
.site-footer {
  padding: 24px 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.site-footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.footer-links {
  margin-bottom: 8px;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.icp-number {
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 600px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero,
  .section {
    padding: 28px 20px;
  }

  .hero h1 {
    font-size: 1.25rem;
  }

  .info-list li {
    flex-direction: column;
    gap: 2px;
  }
}