/* ============================================
   飞一飞，歇一歇个人网站 — 全局设计系统
   工业极简 · 黄黑 · v3 定稿
   ============================================ */

/* ===== CSS 变量 ===== */
:root {
  /* 色彩 */
  --color-bg: #FAF9F6;
  --color-surface: #F4F4F4;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #888888;
  --color-text-disabled: #BBBBBB;
  --color-accent: #FFD400;
  --color-accent-dark: #E6BF00;
  --color-border: #1A1A1A;
  --color-border-light: #E5E5E5;
  --color-sidebar: #F0F0F0;
  --color-sidebar-active: #1A1A1A;
  --color-sidebar-active-text: #FFD400;
  --color-white: #FFFFFF;
  
  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  
  /* 布局 */
  --max-width: 1200px;
  --content-width: 720px;
  --page-padding-desktop: 80px;
  --page-padding-mobile: 20px;
  --header-height: 64px;
  --header-height-mobile: 56px;
  
  /* 圆角 */
  --radius-sm: 2px;
  --radius-md: 4px;
  
  /* 字体 */
  --font-cn: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;
}

/* ===== 重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-cn), var(--font-en);
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-size: 15px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

.hidden { display: none !important; }

/* ===== 字体样式 ===== */
.text-hero {
  font-size: 72px;
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.04em;
}

.text-page-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-section-en {
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.text-card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.text-body {
  font-size: 15px;
  font-weight: 400;
  line-height: 1.8;
}

.text-caption {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
}

.text-label {
  font-size: 11px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.text-button {
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.text-nav {
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.text-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.6;
}

/* ===== 布局容器 ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding-desktop);
}

.container-narrow {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--page-padding-desktop);
}

.section {
  padding: var(--space-16) 0;
}

.section--wide {
  padding: var(--space-20) 0;
}

/* ===== 导航栏 Header ===== */
.site-header {
  height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header-inner {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--page-padding-desktop);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

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

.site-nav a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  transition: color 0.2s;
  position: relative;
  padding: 4px 0;
}

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

.site-nav a.active {
  color: var(--color-text-primary);
}

.site-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-accent);
}

.btn-about {
  border: 1px solid var(--color-border);
  padding: 6px 16px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-primary);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-about::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.btn-about:hover {
  background: var(--color-text-primary);
  color: var(--color-bg);
}

/* 移动端导航 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  transition: 0.3s;
}

.mobile-nav-dot {
  display: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* 移动端导航抽屉 */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  z-index: 200;
  flex-direction: column;
  padding: var(--header-height-mobile) var(--page-padding-mobile) var(--space-16);
}

.mobile-nav-drawer.open {
  display: flex;
}

.mobile-nav-drawer a {
  font-size: 20px;
  font-weight: 700;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
}

.mobile-nav-drawer a.active {
  color: var(--color-text-primary);
}

.mobile-nav-drawer a.active::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 2px;
  background: var(--color-accent);
  margin-right: 12px;
  vertical-align: middle;
}

/* ===== 页脚 Footer ===== */
.site-footer {
  background: var(--color-text-primary);
  color: var(--color-bg);
  border-top: 4px solid var(--color-accent);
  padding: var(--space-8) 0;
  position: relative;
}

.site-footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding-desktop);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand {
  font-size: 14px;
  font-weight: 700;
}

.footer-copyright {
  font-size: 11px;
  color: var(--color-text-secondary);
}

.footer-right {
  display: flex;
  gap: var(--space-4);
}

.footer-right a {
  color: var(--color-bg);
  transition: color 0.2s;
  font-size: 18px;
}

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

.footer-deco {
  position: absolute;
  top: -4px;
  left: var(--page-padding-desktop);
  width: 60px;
  height: 60px;
  opacity: 0.3;
}

/* 备案信息 */
.beian-bar {
  background: var(--color-text-primary);
  color: var(--color-text-secondary);
  text-align: center;
  padding: 8px var(--page-padding-desktop);
  font-size: 11px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.beian-bar a {
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.beian-bar a:hover {
  color: var(--color-bg);
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: var(--color-text-primary);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.15s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--color-accent-dark);
}

.btn-primary:active {
  background: #CCA800;
  transform: scale(0.97);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  padding: 10px 24px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-secondary:hover {
  background: var(--color-text-primary);
  color: var(--color-bg);
}

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  background: var(--color-sidebar);
  color: var(--color-text-primary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tag--accent {
  background: var(--color-accent);
  font-weight: 600;
}

.tag--dark {
  background: var(--color-text-primary);
  color: var(--color-bg);
}

.tag-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 6px;
}

/* ===== 分隔线 ===== */
.divider {
  height: 1px;
  background: var(--color-border);
  width: 100%;
  border: none;
}

.divider--light {
  background: var(--color-border-light);
}

.divider--accent {
  height: 4px;
  background: var(--color-accent);
}

/* ===== 装饰元素 ===== */
.dot-grid {
  background-image: radial-gradient(circle, var(--color-text-primary) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.12;
}

.grid-pattern {
  background-image:
    linear-gradient(to right, var(--color-border-light) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-border-light) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ===== 分页器 ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: var(--space-10) 0;
}

.pagination button,
.pagination a {
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border-light);
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 13px;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  cursor: pointer;
  padding: 0 8px;
}

.pagination button:hover,
.pagination a:hover {
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

.pagination .active {
  background: var(--color-text-primary);
  color: var(--color-bg);
  border-color: var(--color-text-primary);
}

.pagination .disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* ===== 黑胶唱片 ===== */
.vinyl {
  position: relative;
  border-radius: 50%;
  background: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.vinyl-grooves {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0,
    transparent 6px,
    #2A2A2A 7px,
    #2A2A2A 7px
  );
}

.vinyl-shine {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(255,255,255,0.06), transparent 60%);
  pointer-events: none;
}

.vinyl-label {
  position: relative;
  width: 25%;
  height: 25%;
  border-radius: 50%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.vinyl-label::before {
  content: '';
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  border: 1px solid var(--color-text-primary);
}

.vinyl-label::after {
  content: '';
  position: absolute;
  inset: 20%;
  border-radius: 50%;
  border: 1px solid var(--color-text-primary);
}

.vinyl-hole {
  width: 12%;
  height: 12%;
  border-radius: 50%;
  background: var(--color-text-primary);
  z-index: 3;
}

.vinyl.spinning {
  animation: vinyl-spin 4s linear infinite;
}

@keyframes vinyl-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== 卡片基础 ===== */
.card {
  background: transparent;
  border: 1px solid var(--color-border-light);
  transition: border-color 0.2s;
  overflow: hidden;
}

.card:hover {
  border-color: var(--color-border);
}

.card-image {
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.card:hover .card-image img {
  transform: scale(1.02);
}

.card-body {
  padding: var(--space-3);
}

/* ===== 页面标题区 ===== */
.page-header {
  padding: var(--space-12) 0 var(--space-8);
}

.page-header h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.page-header .page-subtitle {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .container,
  .container-narrow,
  .site-header-inner,
  .site-footer-inner {
    padding-left: 40px;
    padding-right: 40px;
  }
}

@media (max-width: 767px) {
  .container,
  .container-narrow,
  .site-header-inner,
  .site-footer-inner {
    padding-left: var(--page-padding-mobile);
    padding-right: var(--page-padding-mobile);
  }
  
  .text-hero {
    font-size: 42px;
  }
  
  .text-page-title {
    font-size: 32px;
  }
  
  .section {
    padding: var(--space-10) 0;
  }
  
  /* 移动端导航 */
  .site-nav,
  .btn-about {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .mobile-nav-dot {
    display: block;
  }
  
  .site-header {
    height: var(--header-height-mobile);
  }
  
  .site-logo {
    font-size: 16px;
  }
  
  .site-header-inner {
    justify-content: space-between;
  }
  
  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  /* 移动端页脚 */
  .site-footer-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }
  
  /* 移动端分页器 */
  .pagination {
    gap: 4px;
  }
}

/* ============================================
   页面专用样式
   ============================================ */

/* ===== 首页 Hero ===== */
.hero {
  height: calc(100vh - var(--header-height));
  min-height: 600px;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-inner {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--page-padding-desktop);
  position: relative;
  z-index: 2;
}
.hero-title {
  font-size: 72px;
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.04em;
  color: var(--color-text-primary);
}
.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-top: 12px;
  letter-spacing: 0.05em;
}
.hero-deco-circle {
  position: absolute;
  top: 10%;
  right: 80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 1px solid var(--color-border-light);
  opacity: 0.4;
  z-index: 1;
}
.hero-deco-circle-2 {
  position: absolute;
  top: 10%;
  right: 80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid var(--color-border-light);
  opacity: 0.3;
  z-index: 1;
  transform: translate(50px, 50px);
}
.hero-deco-crosshair {
  position: absolute;
  bottom: 40px;
  right: 80px;
  opacity: 0.3;
  z-index: 1;
}
.hero-deco-dots {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.08;
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-text-secondary);
  animation: scroll-bounce 2s ease-in-out infinite;
  z-index: 2;
}
@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Section Header（通用区块标题） ===== */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-10);
}
.section-header-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.section-header h2 {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}
.section-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
  transition: color 0.2s;
  white-space: nowrap;
}
.section-link:hover {
  color: var(--color-text-primary);
}

/* ===== 首页：电台预览 ===== */
.radio-preview {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-8);
  border: 1px solid var(--color-border);
}
.radio-preview-vinyl {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}
.radio-preview-vinyl .vinyl-grooves {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0, transparent 4px,
    #2A2A2A 5px, #2A2A2A 5px
  );
}
.radio-preview-vinyl .vinyl-label {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  position: relative;
  z-index: 2;
}
.radio-preview-info {
  flex: 1;
  min-width: 0;
}
.radio-preview-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
}
.radio-preview-sub {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}
.radio-preview-play {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 1px solid var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  flex-shrink: 0;
  transition: all 0.2s;
}
.radio-preview-play:hover {
  background: var(--color-accent-dark);
  transform: scale(1.05);
}

/* ===== 图集网格 ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.gallery-card {
  display: block;
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  transition: border-color 0.2s;
  background: var(--color-surface);
}
.gallery-card:hover {
  border-color: var(--color-border);
}
.gallery-card-image {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-surface);
}
.gallery-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.gallery-card:hover .gallery-card-image img {
  transform: scale(1.02);
}
.gallery-card-body {
  padding: var(--space-3);
}
.gallery-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gallery-card-meta {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== 筛选标签 ===== */
.filter-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.filter-tab {
  padding: 6px 14px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  background: transparent;
}
.filter-tab:hover {
  border-color: var(--color-border);
  color: var(--color-text-primary);
}
.filter-tab.active {
  background: var(--color-accent);
  color: var(--color-text-primary);
  border-color: var(--color-accent);
  font-weight: 600;
}

/* ===== 文章列表 ===== */
.article-list {
  display: flex;
  flex-direction: column;
}
.article-item {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: padding-left 0.2s;
  position: relative;
}
.article-item:first-child {
  border-top: 1px solid var(--color-border-light);
}
.article-item:first-child::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-accent);
}
.article-item:first-child {
  padding-left: var(--space-4);
}
.article-item:hover {
  padding-left: var(--space-4);
}
.article-item:hover:first-child {
  padding-left: var(--space-6);
}
.article-item-thumb {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
}
.article-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.article-item-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.article-item-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}
.article-item-meta {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: 8px;
}
.article-item-excerpt {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 文章侧边栏 ===== */
.article-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-10);
}
.article-sidebar {
  padding-left: var(--space-6);
  border-left: 1px solid var(--color-border-light);
}
.sidebar-block {
  margin-bottom: var(--space-8);
}
.sidebar-title {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}
.sidebar-cat-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.sidebar-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  font-size: 14px;
  color: var(--color-text-primary);
  cursor: pointer;
  transition: color 0.2s;
}
.sidebar-cat-item:hover {
  color: var(--color-accent-dark);
}
.sidebar-cat-item.active {
  color: var(--color-accent-dark);
  font-weight: 700;
  border-left: 3px solid var(--color-accent);
  padding-left: 10px;
  margin-left: -13px;
}
.sidebar-cat-count {
  font-size: 12px;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

/* ===== 作品网格 ===== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.work-card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s;
}
.work-card:hover {
  border-color: var(--color-border);
}
.work-card-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface);
}
.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.work-card:hover .work-card-image img {
  transform: scale(1.02);
}
.work-card-body {
  padding: var(--space-4);
}
.work-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}
.work-card-type {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}
.work-card-intro {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-3);
}
.work-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.work-card-tags .tag {
  font-size: 10px;
  padding: 2px 6px;
}

/* ===== 详情页通用 ===== */
.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  transition: color 0.2s;
}
.detail-back:hover {
  color: var(--color-text-primary);
}
.detail-header {
  margin-bottom: var(--space-8);
}
.detail-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}
.detail-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-3);
}
.detail-meta-item {
  font-size: 12px;
  color: var(--color-text-secondary);
}
.detail-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  margin-bottom: var(--space-8);
  border: 1px solid var(--color-border-light);
}
.detail-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.detail-content {
  max-width: var(--content-width);
  margin: 0 auto;
}
.detail-intro {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-8);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-accent);
}

/* Markdown 内容样式 */
.md-content { line-height: 1.8; }
.md-content .md-h1 { font-size: 32px; font-weight: 800; margin: 1.5em 0 0.5em; }
.md-content .md-h2 { font-size: 24px; font-weight: 700; margin: 1.2em 0 0.4em; }
.md-content .md-h3 { font-size: 18px; font-weight: 700; margin: 1em 0 0.3em; }
.md-content .md-p { font-size: 15px; margin-bottom: 1em; color: var(--color-text-primary); }
.md-content .md-img { max-width: 100%; margin: 1em 0; border: 1px solid var(--color-border-light); }
.md-content .md-link { color: var(--color-accent-dark); text-decoration: underline; }
.md-content .md-inline-code { font-family: var(--font-mono); font-size: 13px; background: var(--color-surface); padding: 2px 6px; border-radius: 2px; }
.md-content .md-code-block { background: var(--color-surface); padding: var(--space-4); overflow-x: auto; border: 1px solid var(--color-border-light); border-radius: var(--radius-md); margin: 1em 0; }
.md-content .md-code-block code { font-family: var(--font-mono); font-size: 13px; }
.md-content .md-quote { border-left: 3px solid var(--color-accent); padding-left: var(--space-4); margin: 1em 0; color: var(--color-text-secondary); }
.md-content .md-ul { margin: 0.5em 0 1em 1.5em; }
.md-content .md-ul li { font-size: 15px; margin-bottom: 0.3em; list-style: disc; }

/* 截图网格 */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin: var(--space-8) 0;
}
.screenshots-grid img {
  width: 100%;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}

/* 技术栈标签 */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-6) 0;
}
.tech-stack .tag {
  font-size: 11px;
}

/* 上下导航 */
.prev-next-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
}
.prev-next-nav a {
  font-size: 13px;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}
.prev-next-nav a:hover {
  color: var(--color-text-primary);
}
.prev-next-nav .nav-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-disabled);
  display: block;
  margin-bottom: 2px;
}

/* ===== 关于页 ===== */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-10);
  padding: var(--space-8) 0;
}
.about-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.about-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}
.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-name {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text-primary);
}
.about-bio {
  font-size: 14px;
  color: var(--color-text-secondary);
}
.about-social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.about-social a {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all 0.2s;
  font-size: 16px;
}
.about-social a:hover {
  border-color: var(--color-border);
  color: var(--color-text-primary);
}
.about-right p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}
.about-skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

/* ===== 404 页面 ===== */
.error-page {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.error-number {
  font-size: 240px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--color-text-primary);
}
.error-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  text-align: center;
}
.error-btn {
  margin-top: var(--space-8);
  display: flex;
  justify-content: center;
}
.error-deco-dots {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  z-index: 0;
}
.error-deco-crosshair {
  position: absolute;
  opacity: 0.2;
  z-index: 0;
}

/* ===== 空状态 ===== */
.empty-state {
  padding: var(--space-16) 0;
  text-align: center;
  color: var(--color-text-disabled);
  font-size: 14px;
}

/* ===== Reveal 动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 页面专用响应式 ===== */
@media (max-width: 1023px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--space-6);
  }
  .about-layout {
    grid-template-columns: 1fr;
  }
  .about-left {
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .hero {
    min-height: 480px;
    height: auto;
    padding: var(--space-20) 0;
  }
  .hero-title {
    font-size: 42px;
  }
  .hero-subtitle {
    font-size: 14px;
  }
  .hero-deco-circle,
  .hero-deco-circle-2 {
    width: 180px;
    height: 180px;
    right: 20px;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .works-grid {
    grid-template-columns: 1fr;
  }
  .article-item {
    flex-direction: column;
    gap: var(--space-3);
  }
  .article-item-thumb {
    width: 100%;
    height: 180px;
  }
  .detail-title {
    font-size: 32px;
  }
  .screenshots-grid {
    grid-template-columns: 1fr;
  }
  .error-number {
    font-size: 120px;
  }
  .section-header h2 {
    font-size: 22px;
  }
  .radio-preview {
    flex-wrap: wrap;
  }
}