html, body, main, header, footer {
  padding: 0px;
  margin: 0px;
}

:root {
  --primary: #2563eb;
  --primary-light: #eff6ff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --bg: #f1f5f9;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --radius: 12px;
  --transition: 0.3s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%);
  color: #fff;
  padding: 40px 0;
  text-align: center;
}

#header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

#header-inner h1 {
  font-size: 2.4rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: 2px;
}

#header-inner #job-target {
  font-size: 1.1rem;
  margin: 8px 0 0;
  opacity: 0.9;
  font-weight: 300;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 32px 24px;
}

#app {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

#sidebar {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

#content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
  letter-spacing: 1px;
}

#avatar-section {
  text-align: center;
  padding: 28px 24px;
}

#avatar-img {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 16px;
  display: block;
}

#sidebar-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
  color: var(--text);
}

#sidebar-job {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 4px 0 0;
}

#contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.9rem;
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.contact-value {
  font-weight: 500;
  text-align: right;
  word-break: break-all;
}

#language-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.language-item {
  background: var(--primary-light);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

#skill-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.skill-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.skill-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
  border-radius: 3px;
  width: 0;
  transition: width 1s ease;
}

.content-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.section-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  letter-spacing: 1px;
}

#about-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: 0;
}

.timeline-item {
  display: flex;
  gap: 16px;
  padding-bottom: 24px;
  position: relative;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
  margin-top: 6px;
  position: relative;
  z-index: 1;
}

.timeline-item:not(:last-child) .timeline-dot::after {
  content: '';
  position: absolute;
  top: 12px;
  left: 5px;
  width: 2px;
  height: calc(100% + 18px);
  background: var(--border);
}

.timeline-content {
  flex: 1;
  min-width: 0;
}

.timeline-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  color: var(--text);
}

.timeline-date {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--primary);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 12px;
  margin: 4px 0;
  font-weight: 500;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 6px 0 4px;
  font-weight: 500;
}

.timeline-detail {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.7;
}

#award-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.award-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text);
}

.award-tag {
  display: inline-block;
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #fff;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  flex-shrink: 0;
  white-space: nowrap;
}

footer {
  text-align: center;
  padding: 24px;
  border-top: 1px solid var(--border);
  background: var(--card-bg);
}

.page-info {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.page-info a {
  color: var(--primary);
  text-decoration: none;
}

@media (max-width: 768px) {
  #app {
    flex-direction: column;
  }
  #sidebar {
    width: 100%;
  }
  header {
    padding: 28px 0;
  }
  #header-inner h1 {
    font-size: 1.8rem;
  }
  #header-inner #job-target {
    font-size: 0.95rem;
  }
  main {
    padding: 20px 16px;
  }
  .content-card {
    padding: 20px;
  }
  .sidebar-card {
    padding: 18px;
  }
}