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

:root {
  --bg-color: #faf8f5;
  --text-primary: #4d3f3f;
  --text-secondary: #6b6b6b;
  --green-accent: #7d9b76;
  --green-light: #e8f0e6;
  --card-bg: #ffffff;
  --shadow: rgba(0, 0, 0, 0.08);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 20px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 2px;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  color: var(--green-accent);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: var(--transition);
}

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

.cart-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition);
}

.cart-btn:hover {
  background-color: var(--green-light);
  color: var(--green-accent);
}

.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

.back-link:hover {
  color: var(--green-accent);
}

.page-hero {
  margin-top: 80px;
  padding: 60px 0 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 300;
  letter-spacing: 1px;
}

.section {
  padding: 40px 0 80px;
}

.profile-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 48px;
  margin-bottom: 32px;
  box-shadow: 0 4px 20px var(--shadow);
}

.profile-header {
  margin-bottom: 32px;
}

.avatar-wrapper {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.avatar-wrapper:hover .avatar-overlay {
  opacity: 1;
}

.avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.avatar-overlay span {
  color: #fff;
  font-size: 12px;
}

.profile-info {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding-top: 24px;
}

.info-row {
  display: flex;
  padding: 16px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

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

.info-label {
  width: 80px;
  color: var(--text-secondary);
  font-size: 15px;
}

.info-value {
  flex: 1;
  font-size: 15px;
  color: var(--text-primary);
}

.upload-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 48px;
  box-shadow: 0 4px 20px var(--shadow);
}

.upload-card h2 {
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 16px;
}

.upload-desc {
  color: var(--text-secondary);
  font-size: 15px;
  margin-bottom: 32px;
}

.upload-area {
  border: 2px dashed rgba(125, 155, 118, 0.3);
  border-radius: 12px;
  padding: 60px 40px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--green-light);
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--green-accent);
  background: rgba(125, 155, 118, 0.1);
}

.upload-icon {
  margin-bottom: 16px;
}

.upload-text {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.upload-hint {
  font-size: 14px;
  color: var(--text-secondary);
}

.file-list {
  margin-top: 24px;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-color);
  border-radius: 8px;
  margin-bottom: 8px;
}

.file-item-name {
  font-size: 14px;
  color: var(--text-primary);
}

.file-item-size {
  font-size: 12px;
  color: var(--text-secondary);
}

.file-item-remove {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 18px;
  transition: var(--transition);
}

.file-item-remove:hover {
  color: #e74c3c;
}

.upload-note {
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 24px;
  opacity: 0.7;
}

.copyright-bar {
  padding: 20px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  text-align: center;
}

.copyright-bar p {
  font-size: 13px;
  color: var(--text-secondary);
  opacity: 0.7;
  margin-bottom: 4px;
}

.copyright-bar a {
  color: var(--text-secondary);
  text-decoration: none;
}

.copyright-bar a:hover {
  color: var(--green-accent);
}

.bottom-nav {
  padding: 60px 0 40px;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.bottom-nav-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 40px;
}

.nav-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
}

.nav-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 1px;
  transition: var(--transition);
}

.nav-column:hover .nav-title {
  color: var(--green-accent);
}

.nav-sub {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.nav-sub:hover {
  color: var(--text-primary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
}

.footer-logo {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 2px;
}

.footer-copyright {
  text-align: center;
}

.footer-copyright p {
  font-size: 13px;
  color: var(--text-secondary);
  opacity: 0.7;
  margin-bottom: 4px;
}

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

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

.social-links {
  display: flex;
  gap: 24px;
}

.social-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
  opacity: 0.7;
}

.social-links a:hover {
  opacity: 1;
  color: var(--green-accent);
}

footer {
  background-color: #f0ece6;
  color: var(--text-primary);
  padding: 40px 0;
  text-align: center;
}

footer p {
  font-size: 14px;
  opacity: 0.7;
}

@media (max-width: 768px) {
  .profile-card,
  .upload-card {
    padding: 32px 24px;
  }

  .upload-area {
    padding: 40px 24px;
  }
}