/* ========================================
   CSS 变量与基础设置
   ======================================== */
:root {
  --primary-dark: #0f172a;
  --primary-mid: #1e293b;
  --primary-light: #334155;
  --accent-coral: #f97316;
  --accent-gold: #fbbf24;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --gradient-deep: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
  --glow-coral: 0 0 30px rgba(249, 115, 22, 0.3);
  --font-sans: 'Noto Sans SC', 'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--gradient-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

::selection {
  background: var(--accent-coral);
  color: white;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-coral);
}

/* ========================================
   背景装饰
   ======================================== */
.bg-decoration {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.stars {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.3), transparent),
    radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.2), transparent),
    radial-gradient(1px 1px at 160px 120px, rgba(255,255,255,0.4), transparent);
  background-size: 200px 200px;
  animation: twinkle 4s ease-in-out infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: var(--accent-coral);
  top: -100px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: var(--accent-gold);
  bottom: -50px;
  left: -50px;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, 30px); }
}

/* ========================================
   通用容器
   ======================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-coral);
  margin-bottom: 12px;
  padding: 4px 12px;
  background: rgba(249, 115, 22, 0.1);
  border-radius: 20px;
}

.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  font-size: 24px;
}

.logo-text {
  font-family: 'Outfit', sans-serif;
  font-size: 24px;
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-coral);
  transition: var(--transition-fast);
}

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

.nav-link:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.avatar-wrapper {
  position: relative;
}

.avatar-glow {
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  background: linear-gradient(135deg, var(--accent-coral), var(--accent-gold));
  border-radius: 50%;
  filter: blur(20px);
  opacity: 0.4;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.1); opacity: 0.6; }
}

.avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary-mid);
  position: relative;
  z-index: 1;
  transition: var(--transition-normal);
}

.avatar:hover {
  transform: scale(1.05);
}

.hero-text {
  max-width: 700px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.tag {
  padding: 6px 16px;
  background: var(--primary-light);
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  animation: fadeIn 0.5s ease-out backwards;
}

.tag:nth-child(1) { animation-delay: 0.2s; }
.tag:nth-child(2) { animation-delay: 0.3s; }
.tag:nth-child(3) { animation-delay: 0.4s; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-title {
  font-family: 'Outfit', sans-serif;
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
}

.highlight {
  background: linear-gradient(135deg, var(--accent-coral) 0%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  min-height: 32px;
}

.typewriter {
  display: inline-block;
  border-right: 2px solid var(--accent-coral);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { border-color: transparent; }
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition-normal);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-coral) 0%, #ea580c 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--accent-coral);
  border: 2px solid var(--accent-coral);
}

.btn-secondary:hover {
  background: var(--accent-coral);
  color: white;
}

/* 滚动指示器 */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-size: 14px;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}

.scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-secondary);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--text-secondary);
  border-radius: 2px;
  animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(6px); }
}

/* ========================================
   关于我
   ======================================== */
.about {
  background: rgba(30, 41, 59, 0.5);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-card {
  background: var(--primary-mid);
  border-radius: 16px;
  padding: 40px;
  border: 1px solid var(--primary-light);
  transition: var(--transition-normal);
}

.about-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  border-color: rgba(249, 115, 22, 0.3);
}

.about-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.about-card h3 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.about-card p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.stat-item {
  background: var(--primary-mid);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  border: 1px solid var(--primary-light);
  transition: var(--transition-normal);
}

.stat-item:hover {
  transform: translateY(-4px);
  border-color: var(--accent-coral);
  box-shadow: var(--glow-coral);
}

.stat-number {
  font-family: 'Outfit', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: var(--accent-coral);
  display: inline;
}

.stat-plus, .stat-label {
  display: block;
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* ========================================
   工作经历
   ======================================== */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-coral), var(--accent-gold), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  opacity: 0;
  transform: translateX(-20px);
  transition: var(--transition-slow);
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-marker {
  position: absolute;
  left: -40px;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--accent-coral);
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.5);
}

.timeline-content {
  background: var(--primary-mid);
  border-radius: 16px;
  padding: 28px;
  border: 1px solid var(--primary-light);
  transition: var(--transition-normal);
}

.timeline-content:hover {
  transform: translateX(8px);
  border-color: rgba(249, 115, 22, 0.3);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.timeline-company {
  display: flex;
  align-items: center;
  gap: 12px;
}

.company-logo {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.timeline-company h3 {
  font-size: 20px;
  margin-bottom: 4px;
}

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

.timeline-date {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-coral);
  background: rgba(249, 115, 22, 0.1);
  padding: 4px 12px;
  border-radius: 20px;
}

.timeline-desc {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-sm {
  padding: 4px 12px;
  background: var(--primary-light);
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

/* ========================================
   技能专长
   ======================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.skill-category {
  background: var(--primary-mid);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--primary-light);
  transition: var(--transition-normal);
}

.skill-category:hover {
  transform: translateY(-4px);
  border-color: rgba(249, 115, 22, 0.3);
}

.skill-category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  margin-bottom: 28px;
  color: var(--accent-coral);
}

.skill-category-title svg {
  stroke: var(--accent-coral);
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.skill-item {
  opacity: 0;
  transform: translateX(-20px);
  transition: var(--transition-slow);
}

.skill-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 14px;
}

.skill-name {
  color: var(--text-primary);
  font-weight: 500;
}

.skill-value {
  color: var(--accent-coral);
  font-family: var(--font-mono);
}

.skill-bar {
  height: 8px;
  background: var(--primary-light);
  border-radius: 4px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-coral), var(--accent-gold));
  border-radius: 4px;
  width: 0;
  transition: width 1s ease-out;
}

.soft-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.soft-skill {
  padding: 10px 20px;
  background: var(--primary-light);
  border-radius: 8px;
  font-size: 14px;
  transition: var(--transition-fast);
  cursor: default;
}

.soft-skill:hover {
  background: var(--accent-coral);
  color: white;
  transform: translateY(-2px);
}

/* ========================================
   项目作品集
   ======================================== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  background: var(--primary-mid);
  border: 1px solid var(--primary-light);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--accent-coral);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--accent-coral);
  border-color: var(--accent-coral);
  color: white;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 32px;
}

.project-card {
  background: var(--primary-mid);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--primary-light);
  transition: var(--transition-normal);
  opacity: 0;
  transform: translateY(20px);
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card.hidden {
  display: none;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  border-color: rgba(249, 115, 22, 0.3);
}

.project-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(249, 115, 22, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-link {
  width: 56px;
  height: 56px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-coral);
  transition: var(--transition-fast);
}

.project-link:hover {
  transform: scale(1.1);
}

.project-info {
  padding: 24px;
}

.project-title {
  font-size: 20px;
  margin-bottom: 12px;
}

.project-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-tags span {
  padding: 4px 10px;
  background: var(--primary-light);
  border-radius: 4px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

/* ========================================
   航海案例集
   ======================================== */
.navigate {
  background: rgba(30, 41, 59, 0.5);
}

.voyage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.voyage-card {
  background: linear-gradient(135deg, var(--primary-mid) 0%, rgba(249, 115, 22, 0.1) 100%);
  border-radius: 20px;
  padding: 32px;
  border: 2px solid transparent;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px);
}

.voyage-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.voyage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-coral), var(--accent-gold));
}

.voyage-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent-coral);
  box-shadow: var(--glow-coral);
}

.voyage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.voyage-badge {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent-coral), var(--accent-gold));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.voyage-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 20px;
}

.voyage-title {
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.voyage-desc {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.voyage-achievement {
  background: var(--primary-dark);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
}

.achievement-label {
  display: block;
  font-size: 12px;
  color: var(--accent-coral);
  font-weight: 600;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.achievement-value {
  font-size: 14px;
  color: var(--text-primary);
}

.voyage-links {
  display: flex;
  gap: 16px;
}

.voyage-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--primary-light);
  border-radius: 8px;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition-fast);
  flex: 1;
  justify-content: center;
}

.voyage-link:hover {
  background: var(--accent-coral);
  color: white;
}

/* ========================================
   联系方式
   ======================================== */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 {
  font-size: 28px;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-link {
  width: 56px;
  height: 56px;
  background: var(--primary-mid);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: var(--transition-fast);
  border: 1px solid var(--primary-light);
}

.social-link:hover {
  transform: translateY(-4px);
  background: var(--accent-coral);
  border-color: var(--accent-coral);
}

.contact-form {
  background: var(--primary-mid);
  border-radius: 20px;
  padding: 40px;
  border: 1px solid var(--primary-light);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--primary-dark);
  border: 1px solid var(--primary-light);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 16px;
  font-family: var(--font-sans);
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-coral);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn-submit {
  width: 100%;
  justify-content: center;
}

.form-message {
  margin-top: 16px;
  text-align: center;
  font-size: 14px;
  padding: 12px;
  border-radius: 8px;
  display: none;
}

.form-message.success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-message.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ========================================
   页脚
   ======================================== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--primary-light);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 20px;
  font-weight: 700;
}

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

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

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

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--primary-mid);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    transition: var(--transition-normal);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
  }
  
  .nav-links.open {
    right: 0;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .section-title {
    font-size: 32px;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
  }
  
  .hero-buttons .btn {
    width: 100%;
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .stat-number {
    font-size: 36px;
  }
  
  .timeline {
    padding-left: 32px;
  }
  
  .timeline::before {
    left: 4px;
  }
  
  .timeline-marker {
    left: -32px;
    width: 12px;
    height: 12px;
  }
  
  .timeline-header {
    flex-direction: column;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .voyage-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 16px 60px;
  }
  
  .avatar {
    width: 120px;
    height: 120px;
  }
  
  .tags {
    gap: 8px;
  }
  
  .tag {
    padding: 4px 12px;
    font-size: 12px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .about-card,
  .contact-form {
    padding: 24px;
  }
  
  .filter-btn {
    padding: 8px 16px;
    font-size: 13px;
  }
  
  .social-links {
    justify-content: center;
  }
}