/* ===== 水跃鱼作品集 - 终末地 Gameplay 页风格 ===== */
/* 白底主调 + 深黑文字 + 荧光黄强调 + 硬边工业感 */

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

:root {
  --white: #ffffff;
  --off-white: #f2f2f2;
  --bg-dark: #191919;
  --bg-darker: #131315;
  --text-black: #191919;
  --text-dark: #333333;
  --text-gray: #7c7c7c;
  --text-light: #b9b9b9;
  --yellow: #fffa00;
  --yellow-dim: #e6d900;
  --yellow-glow: rgba(255, 250, 0, 0.12);
  --red-dark: #3c0000;
  --border: #e6e6e6;
  --border-dark: #333333;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--white);
  color: var(--text-black);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* ===== 左侧固定导航 ===== */
.side-nav {
  position: fixed;
  left: 0;
  top: 0;
  width: 48px;
  height: 100vh;
  background: var(--bg-dark);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 0;
}

.side-nav-logo {
  width: 32px;
  height: 32px;
  background: var(--yellow);
  color: var(--text-black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.side-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-items: center;
}

.side-nav-item {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  transition: var(--transition);
  position: relative;
}

.side-nav-item:hover {
  color: var(--white);
}

.side-nav-item.active {
  color: var(--yellow);
}

.side-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  background: var(--yellow);
}

/* ===== Hero 全屏区域 ===== */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: 48px;
  position: relative;
  overflow: hidden;
}

.hero-bg-text {
  position: absolute;
  top: 5%;
  left: 48px;
  font-size: clamp(5rem, 12vw, 12rem);
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px var(--border);
  letter-spacing: -4px;
  pointer-events: none;
  line-height: 1;
  white-space: nowrap;
  user-select: none;
}

.hero-coords {
  position: absolute;
  top: 2rem;
  right: 5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.15rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--border);
  text-transform: uppercase;
}

.hero-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  padding: 0 4rem;
  max-width: 1400px;
  width: 100%;
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.tag-bar {
  display: block;
  width: 40px;
  height: 4px;
  background: var(--yellow);
}

.tag-en {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-gray);
}

.hero-title {
  margin-bottom: 1rem;
}

.title-line {
  display: block;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -1px;
  color: var(--text-black);
}

.title-outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--text-black);
  letter-spacing: 4px;
}

.title-outline-img {
  display: block;
  height: clamp(1.32rem, 4.5vw, 3.5rem);
  width: auto;
  margin-top: 0.25rem;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-gray);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 3rem;
}

.hero-info {
  display: flex;
  gap: 3rem;
  margin-bottom: 4rem;
}

.hero-info-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.info-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-gray);
}

.info-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-black);
}

.hero-scroll-hint {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.hero-scroll-hint span {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 3px;
  color: var(--text-gray);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 40%;
  background: var(--yellow);
  animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
  0% { top: -40%; }
  100% { top: 120%; }
}

/* 技能标签 */
.hero-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.skill-chip {
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--border);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-gray);
  letter-spacing: 0.5px;
  transition: var(--transition);
}

.skill-chip:hover {
  border-color: var(--yellow);
  color: var(--text-black);
}

/* 右侧教育经历 */
.hero-edu {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  z-index: 2;
}

.edu-block {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.edu-block:hover {
  border-color: var(--yellow);
}

.edu-block-degree {
  padding: 1.25rem 1.5rem;
  background: var(--bg-dark);
  color: var(--yellow);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  white-space: nowrap;
  border-right: 1px solid var(--border);
}

.edu-block-info {
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.edu-block-school {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-black);
}

.edu-block-major {
  font-size: 0.8rem;
  color: var(--text-gray);
  font-weight: 600;
}

.edu-block-year {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 600;
  letter-spacing: 1px;
  margin-top: 0.25rem;
}

.panel-divider {
  height: 1px;
  background: var(--border-dark);
}

.stat-number {
  font-size: 2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  letter-spacing: -1px;
}

.stat-label {
  font-size: 0.55rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #666;
  margin-top: 0.25rem;
}

/* 底部装饰线 */
.hero-bottom-line {
  position: absolute;
  bottom: 0;
  left: 48px;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--border), var(--yellow) 30%, var(--border) 60%, transparent);
}

/* 右侧黄色色块（终末地特征） */
.hero-yellow-block {
  position: absolute;
  right: 0;
  top: 20%;
  width: 60px;
  height: 35%;
  background: var(--yellow);
  z-index: 1;
}

/* ===== Section 通用 ===== */
.content-section {
  padding: 6rem 4rem 6rem calc(48px + 4rem);
  position: relative;
}

.section-dark {
  background: rgba(25, 25, 25, 0.95);
  color: var(--white);
}

.section-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.label-bar {
  display: block;
  width: 40px;
  height: 4px;
  background: var(--yellow);
}

.label-en {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-gray);
}

.section-dark .label-en {
  color: var(--text-light);
}

.label-zh {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
}

/* ===== 工作经历卡片 ===== */
.exp-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 900px;
}

.exp-card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.exp-card:hover {
  border-color: var(--text-black);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.exp-card:hover .exp-card-accent {
  width: 100%;
}

.exp-card-accent {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--yellow);
  transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.exp-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.exp-company h3 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.exp-dept {
  font-size: 0.8rem;
  color: var(--text-gray);
  font-weight: 600;
}

.exp-period {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-gray);
  font-weight: 600;
}

.exp-badge {
  padding: 0.15rem 0.5rem;
  background: var(--yellow);
  color: var(--text-black);
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.badge-intern {
  background: var(--text-black);
  color: var(--white);
}

.exp-project {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.exp-role {
  font-size: 0.85rem;
  color: var(--text-gray);
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.exp-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.exp-details li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.9rem;
  color: var(--text-dark);
  line-height: 1.7;
}

.exp-details li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 4px;
  height: 4px;
  background: var(--text-dark);
}

/* ===== 作品展示 ===== */
.works-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-dark);
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--yellow);
  transition: width 0.3s ease;
}

.tab-btn:hover {
  color: var(--white);
}

.tab-btn.active {
  color: var(--yellow);
}

.tab-btn.active::after {
  width: 100%;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

a.work-card,
.work-card {
  background: var(--bg-darker);
  border: 1px solid var(--border-dark);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  display: block;
  color: inherit;
  text-decoration: none;
}

a.work-card:hover,
.work-card:hover {
  border-color: var(--yellow);
  transform: translateY(-4px);
}

.work-card-image {
  width: 100%;
  height: 200px;
  background: #232323;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--border-dark);
  overflow: hidden;
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.work-card-placeholder {
  font-size: 3rem;
}

.work-card-body {
  padding: 1.25rem;
}

.work-card-tag {
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--yellow);
  margin-bottom: 0.5rem;
}

.work-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.35rem;
}

.work-card-genre {
  font-size: 0.75rem;
  color: var(--text-light);
  margin-bottom: 0.75rem;
  letter-spacing: 0.5px;
}

.work-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  color: var(--text-gray);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-dark);
}

.work-card-role {
  font-weight: 600;
}

.work-card-date {
  letter-spacing: 0.5px;
}

.work-card-note {
  margin-top: 0.5rem;
  font-size: 0.7rem;
  color: var(--yellow-dim);
  font-weight: 600;
}

/* ===== 作品详情弹窗 ===== */
.detail-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  cursor: pointer;
}

.detail-overlay.active {
  opacity: 1;
}

.detail-modal {
  background: var(--bg-dark);
  border: 1px solid var(--border-dark);
  width: 90%;
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  cursor: default;
}

.detail-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: 1px solid var(--border-dark);
  color: var(--white);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  z-index: 10;
  transition: var(--transition);
}

.detail-close:hover {
  background: var(--yellow);
  color: var(--text-black);
  border-color: var(--yellow);
}

.detail-image {
  width: 100%;
  max-height: 350px;
  overflow: hidden;
}

.detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-content {
  padding: 2rem;
}

.detail-tag {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--yellow);
  margin-bottom: 0.75rem;
}

.detail-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 0.25rem;
}

.detail-genre {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 1.25rem;
}

.detail-desc {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.detail-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
  background: var(--bg-darker);
  border: 1px solid var(--border-dark);
  margin-bottom: 1.5rem;
}

.detail-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.detail-info-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-gray);
}

.detail-info-value {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
}

.detail-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.detail-tag-item {
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border-dark);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.5px;
}

.detail-tag-item:first-child {
  border-color: var(--yellow);
  color: var(--yellow);
}

.detail-view-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding: 0.75rem 2rem;
  background: var(--yellow);
  color: var(--text-black);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  text-decoration: none;
  transition: var(--transition);
}

.detail-view-btn:hover {
  background: var(--white);
  color: var(--text-black);
  transform: translateY(-2px);
}

.works-empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* ===== 游戏展示 ===== */
.games-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 2rem;
}

.game-showcase-card {
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.game-showcase-card:hover {
  border-color: var(--text-black);
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

.game-showcase-image {
  width: 100%;
  height: 220px;
  background: var(--off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.game-showcase-image::after {
  content: 'PLAY';
  position: absolute;
  right: 0;
  bottom: 0;
  padding: 0.5rem 1rem;
  background: var(--yellow);
  color: var(--text-black);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 2px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.game-showcase-card:hover .game-showcase-image::after {
  opacity: 1;
}

.game-showcase-body {
  padding: 1.5rem;
}

.game-showcase-type {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-gray);
  margin-bottom: 0.5rem;
}

.game-showcase-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.game-showcase-desc {
  font-size: 0.85rem;
  color: var(--text-gray);
  line-height: 1.6;
}

/* ===== 联系方式 ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 900px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.contact-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
}

.contact-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.contact-value:hover {
  color: var(--yellow);
}

.contact-edu h4 {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.edu-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-dark);
}

.edu-degree {
  padding: 0.2rem 0.5rem;
  background: var(--yellow);
  color: var(--text-black);
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.edu-school {
  font-weight: 600;
  font-size: 0.9rem;
}

.edu-year {
  color: var(--text-light);
  font-size: 0.8rem;
  margin-left: auto;
}

/* ===== 联系方式（底部简洁版） ===== */
.contact-section {
  border-top: 1px solid var(--border-dark);
}

.contact-simple {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.contact-simple-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.contact-simple-label {
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #666;
}

.contact-simple-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
}

a.contact-simple-value:hover {
  color: var(--yellow);
}

/* ===== Footer ===== */
.footer {
  padding: 2rem 4rem 2rem calc(48px + 4rem);
  border-top: 1px solid var(--border);
  background: var(--white);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-gray);
  letter-spacing: 0.5px;
}

.footer-link a:hover {
  color: var(--text-black);
}

/* ===== 动画 ===== */

/* 通用渐入上滑 */
.anim-slide-up {
  opacity: 0;
  transform: translateY(40px);
  animation: slideUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.delay-1 { animation-delay: 1.1s; }
.delay-2 { animation-delay: 1.3s; }
.delay-3 { animation-delay: 1.5s; }

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 黄条：左至右滑入 */
.anim-bar-in {
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  animation: barSlideIn 0.2s ease-out 0.5s forwards;
}

@keyframes barSlideIn {
  to {
    opacity: 1;
    transform: scaleX(1);
  }
}

/* GAME DESIGNER：闪烁2次出现 */
.anim-tag-flicker {
  opacity: 0;
  animation: flicker2 0.1s steps(1) 0.7s forwards;
}

/* 名字：闪烁2次出现 */
.anim-name-flicker {
  opacity: 0;
  animation: flicker2 0.1s steps(1) 0.9s forwards;
}

@keyframes flicker2 {
  0%   { opacity: 0; }
  15%  { opacity: 1; }
  30%  { opacity: 0; }
  50%  { opacity: 1; }
  65%  { opacity: 0; }
  80%  { opacity: 1; }
  100% { opacity: 1; }
}

/* 滚动触发版：初始隐藏，.visible 时播放（含0.5s等待） */
.scroll-bar-in {
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
}
.visible .scroll-bar-in {
  animation: barSlideIn 0.2s ease-out 0.5s forwards;
}

.scroll-flicker {
  opacity: 0;
}
.visible .scroll-flicker {
  animation: flicker2 0.1s steps(1) 0.7s forwards;
}

.scroll-flicker-delay {
  opacity: 0;
}
.visible .scroll-flicker-delay {
  animation: flicker2 0.1s steps(1) 0.8s forwards;
}

/* 内容区滚动渐入：从右侧滑入 */
.anim-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* section-label 的 anim-on-scroll 不需要位移，只触发子元素动画 */
.section-label.anim-on-scroll {
  opacity: 1;
  transform: none;
  transition: none;
}

/* 内容卡片从右侧渐入 */
.scroll-slide-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-slide-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 侧边栏logo：首页动画序列最后闪烁出现（3次，0.15s） */
.anim-logo-flicker {
  opacity: 0;
  animation: flicker3 0.15s steps(1) 2s forwards;
}

/* 3次闪烁：亮→灭→亮→灭→亮→保持 */
@keyframes flicker3 {
  0%        { opacity: 0; }
  10%       { opacity: 1; }
  20%       { opacity: 0; }
  36%       { opacity: 1; }
  48%       { opacity: 0; }
  64%       { opacity: 1; }
  76%       { opacity: 0; }
  90%       { opacity: 1; }
  100%      { opacity: 1; }
}

.anim-fade {
  opacity: 0;
  animation: fadeIn 1s ease forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* 滚动触发动画 */
.anim-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.anim-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 等高线底纹（首页） ===== */
.topo-bg-home {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 100%;
  height: auto;
  background-image: url('../images/topo-lines.svg');
  background-size: 100% auto;
  background-repeat: repeat-y;
  pointer-events: none;
  z-index: 2;
  /* 左侧渐变遮罩 */
  -webkit-mask-image: linear-gradient(to right, transparent 30%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,1) 75%);
  mask-image: linear-gradient(to right, transparent 30%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,1) 75%);
}

.hero-section,
.content-section,
.footer {
  position: relative;
  z-index: 1;
}

/* ===== 文章卡片 ===== */
.article-card-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
}

.article-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  border-color: var(--text-black);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  transform: translateX(4px);
}

.article-card:hover .article-card-arrow {
  color: var(--yellow);
  transform: translateX(4px);
}

.article-card-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  line-height: 1;
}

.article-card-body {
  flex: 1;
  min-width: 0;
}

.article-card-tags {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
}

.article-tag {
  font-size: 0.6rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-gray);
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border);
}

.article-card-title {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
}

.article-card-desc {
  font-size: 0.8rem;
  color: var(--text-gray);
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

.article-card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.65rem;
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-card-arrow {
  font-size: 1.5rem;
  color: var(--border);
  flex-shrink: 0;
  transition: var(--transition);
}

/* ===== 手机端导航栏 ===== */
.mobile-nav {
  display: none;
}

/* ===== 响应式 ===== */
@media (max-width: 900px) {

  /* 手机导航栏 */
  .mobile-nav {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9999;
  }

  .mobile-nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    height: 48px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .mobile-nav-logo {
    width: 32px;
    height: 32px;
    background: var(--yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.6rem;
    opacity: 0;
    animation: flicker3 0.15s steps(1) 0.5s forwards;
  }

  .mobile-nav-logo img {
    display: block;
    object-fit: contain;
  }

  .mobile-nav-title {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--text-black);
  }

  .mobile-nav-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 6px;
  }

  .mobile-nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-black);
    transition: all 0.3s ease;
  }

  /* 汉堡菜单变 X */
  .mobile-nav.open .mobile-nav-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }
  .mobile-nav.open .mobile-nav-toggle span:nth-child(2) {
    opacity: 0;
  }
  .mobile-nav.open .mobile-nav-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
  }

  /* 下拉菜单 */
  .mobile-nav-menu {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .mobile-nav.open .mobile-nav-menu {
    max-height: 300px;
  }

  .mobile-nav-link {
    padding: 0.85rem 1.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: background 0.2s;
  }

  .mobile-nav-link:active {
    background: rgba(0,0,0,0.04);
  }

  /* 给 body 留出导航栏高度 */
  body {
    padding-top: 48px;
  }
  .side-nav {
    display: none;
  }

  .leaf-pond {
    display: none !important;
  }

  .hero-section {
    padding-left: 0;
  }

  .hero-layout {
    flex-direction: column;
    padding: 0 1.5rem;
    gap: 2rem;
  }

  .hero-panel {
    flex-direction: row;
    flex-wrap: wrap;
    min-width: auto;
    width: 100%;
    padding: 1.5rem;
    gap: 1rem;
  }

  .panel-stat {
    padding: 0.5rem 0;
    flex: 1;
    min-width: 80px;
  }

  .panel-divider {
    display: none;
  }

  .panel-footer {
    width: 100%;
    border-top: 1px solid var(--border-dark);
    padding-top: 1rem;
    margin-top: 0;
  }

  .hero-edu {
    width: 100%;
  }

  .contact-simple {
    flex-direction: column;
    gap: 1.5rem;
  }

  .content-section {
    padding: 4rem 1.5rem;
  }

  /* 文章卡片手机端精简 */
  .article-card {
    padding: 1rem 1.25rem;
    gap: 0.75rem;
  }
  .article-card-icon {
    font-size: 1.2rem;
  }
  .article-card-desc {
    display: none;
  }
  .article-card-title {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
  }
  .article-card-arrow {
    display: none;
  }
  .article-card-tags {
    margin-bottom: 0.3rem;
  }

  .hero-content {
    padding: 2rem 1.5rem;
  }

  .hero-bg-text {
    left: 0;
    font-size: 2.5rem;
    top: 1.5rem;
    letter-spacing: -2px;
  }

  .hero-coords {
    display: none;
  }

  .hero-yellow-block {
    width: 20px;
  }

  .hero-tag {
    margin-top: 3rem;
  }

  .title-line {
    font-size: 2rem;
  }

  .title-outline {
    font-size: 1.6rem;
    -webkit-text-stroke: 1px var(--text-black);
    letter-spacing: 6px;
  }

  .hero-subtitle {
    font-size: 0.9rem;
  }

  .hero-info {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-skills {
    margin-bottom: 2rem;
  }

  .skill-chip {
    font-size: 0.6rem;
    padding: 0.2rem 0.6rem;
  }

  .exp-card-header {
    flex-direction: column;
    gap: 0.5rem;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .games-showcase {
    grid-template-columns: 1fr;
  }

  .footer {
    padding: 2rem 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* ===== 水面漂浮叶子 ===== */
.leaf-pond {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 1;
}

.floating-leaf {
  position: absolute;
  pointer-events: none;
  will-change: left, top, transform;
  filter: drop-shadow(1px 2px 3px rgba(0,0,0,0.1));
}

/* ===== 点击水波效果 ===== */
.click-ripple {
  position: absolute;
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
}

/* 外圈波纹 - 第一层 */
.click-ripple .ripple-ring {
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  border: 1.5px solid rgba(0, 0, 0, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: ripple-ring-expand 0.8s cubic-bezier(0, 0.5, 0.3, 1) forwards;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
}
/* 第二层：延迟 */
.click-ripple .ripple-ring:nth-child(2) {
  border: 1px solid rgba(0, 0, 0, 0.18);
  box-shadow: none;
  animation-delay: 0.12s;
  animation-duration: 1s;
}

/* 中心闪点 */
.click-ripple .ripple-dot {
  position: absolute;
  top: 50%; left: 50%;
  width: 6px; height: 6px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: ripple-dot-flash 0.5s ease-out forwards;
}

/* 十字准星线 */
.click-ripple .ripple-cross {
  position: absolute;
  background: rgba(0, 0, 0, 0.2);
  transform-origin: center;
}
.click-ripple .ripple-cross-h {
  top: 50%; left: 50%;
  width: 0; height: 1px;
  transform: translate(-50%, -50%);
  animation: ripple-cross-h-expand 0.5s cubic-bezier(0, 0.7, 0.3, 1) forwards;
}
.click-ripple .ripple-cross-v {
  top: 50%; left: 50%;
  width: 1px; height: 0;
  transform: translate(-50%, -50%);
  animation: ripple-cross-v-expand 0.5s cubic-bezier(0, 0.7, 0.3, 1) forwards;
}

/* 四角装饰标记 */
.click-ripple .ripple-corner {
  position: absolute;
  width: 6px; height: 6px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  opacity: 0;
  animation: ripple-corner-show 0.6s ease-out forwards;
}
.click-ripple .ripple-corner:nth-child(6) {
  top: -28px; left: -28px;
  border-right: none; border-bottom: none;
}
.click-ripple .ripple-corner:nth-child(7) {
  top: -28px; right: -28px;
  border-left: none; border-bottom: none;
}
.click-ripple .ripple-corner:nth-child(8) {
  bottom: -28px; left: -28px;
  border-right: none; border-top: none;
}
.click-ripple .ripple-corner:nth-child(9) {
  bottom: -28px; right: -28px;
  border-left: none; border-top: none;
}

@keyframes ripple-ring-expand {
  0% {
    width: 0; height: 0;
    opacity: 1;
  }
  100% {
    width: 150px; height: 150px;
    opacity: 0;
  }
}

@keyframes ripple-dot-flash {
  0% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(3);
  }
}

@keyframes ripple-cross-h-expand {
  0% { width: 0; opacity: 0.6; }
  100% { width: 70px; opacity: 0; }
}

@keyframes ripple-cross-v-expand {
  0% { height: 0; opacity: 0.6; }
  100% { height: 70px; opacity: 0; }
}

@keyframes ripple-corner-show {
  0% { opacity: 0; transform: scale(0); }
  30% { opacity: 0.5; transform: scale(1.2); }
  100% { opacity: 0; transform: scale(1); }
}