/* 整体等效约 90% 缩放：缩小根字号，所有 rem 间距/字号随之收紧（不影响视口单位布局） */
html {
  font-size: 14.4px;
}

:root {
  --ink: #000000;
  --paper: #ffffff;
  --primary: rgb(255, 107, 107);
  --accent-yellow: rgb(255, 230, 109);
  --accent-teal: rgb(78, 205, 196);
  --accent-pink: rgb(255, 144, 232);
  --accent-blue: rgb(97, 157, 255);
  --accent-green: rgb(139, 219, 132);
  --border-width: 3px;
  --border: 3px;
  --radius-md: 12px;
  --shadow-offset: 5px;
  --font-sans: "Public Sans", "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--paper);
  /* Dot pattern background */
  background-image: radial-gradient(var(--ink) 1px, transparent 0);
  background-size: 24px 24px;
  color: var(--ink);
  line-height: 1.5;
  overflow-x: hidden;
}

.nb-shell {
  max-width: 1160px;
  margin: 0 auto;
  padding: 32px 20px;
}

/* 各页面顶部大标题卡片：下边距缩小，板块更紧凑 */
.nb-shell > .nb-card.mb-5 {
  margin-bottom: 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 900;
  text-transform: uppercase;
  line-height: 1.1;
}

h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); margin-bottom: 1rem; }
h2 { font-size: 2.5rem; margin-bottom: 1.5rem; }

/* Components */
.nb-landing {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  overflow-y: auto;
  width: 100vw;
  padding: 0 0 0.3rem;
}

.nb-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  padding: 1rem 2rem;
  margin: 1.5rem 4rem 1rem;
  border-radius: 12px;
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--ink);
  flex-shrink: 0;
  z-index: 20;
}

.nb-nav-bar {
  display: flex;
  align-items: center;
}

.nb-nav-toggle {
  display: none;
}

.nb-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* "其它"下拉菜单 */
.nb-dropdown {
  position: relative;
}

/* button 与其它 nav-link 视觉一致：保留相同透明边框占位、继承行高 */
.nb-dropdown > .nav-link {
  border: var(--border-width) solid transparent;
  background: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: inherit;
  text-align: left;
  cursor: pointer;
}

.nb-dropdown > .nav-link:hover {
  border-color: var(--ink);
}

.nb-dropdown-caret {
  display: inline-block;
  font-size: 0.75em;
  margin-left: 0.25rem;
}

.nb-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 10rem;
  flex-direction: column;
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  z-index: 50;
  padding: 0.5rem;
}

.nb-dropdown-menu.open {
  display: flex;
}

.nb-dropdown-menu .nav-link {
  padding: 0.5rem 0.75rem;
  white-space: nowrap;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 900;
  text-decoration: none;
  color: var(--ink);
}

.nav-link {
  font-weight: 800;
  text-decoration: none;
  color: var(--ink);
  padding: 0.5rem 0.3rem;
  border: var(--border-width) solid transparent;
  transition: var(--transition);
  border-radius: 8px;
}

.nav-link:hover, .nav-link.active {
  background: var(--accent-yellow);
  border-color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  transform: translate(-2px, -2px);
}

.nb-hero {
  flex-grow: 1;
  padding: 0 4rem;
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 4rem;
  border: none;
  border-radius: 0;
  box-shadow: none;
  margin-bottom: 0;
}

.nb-hero-video {
  flex-shrink: 0;
}

/* 宣传视频封面：点击后才加载播放 */
.nb-video-cover {
  position: relative;
  width: clamp(280px, 30vw, 480px);
  cursor: pointer;
}

.nb-video-cover .nb-img {
  display: block;
  width: 100%;
  height: auto;
}

.nb-hero-video .nb-video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4rem;
  height: 4rem;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border-radius: 50%;
}

/* hover 时保持居中（.nb-btn:hover 的 transform 会覆盖 translate(-50%,-50%)） */
.nb-hero-video .nb-video-play-btn:hover {
  transform: translate(-50%, -50%) translateY(-4px) rotate(-1deg);
}

.nb-hero-video video {
  width: clamp(280px, 30vw, 480px);
  height: auto;
  border: var(--border-width) solid var(--ink);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--ink);
}

.nb-hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.nb-hero h1 {
  position: relative;
  z-index: 2;
}

.nb-hero p {
  font-size: 1.25rem;
  font-weight: 600;
  max-width: 600px;
  margin-bottom: 2rem;
  background: #f0f0f0;
  padding: 1rem;
  border-left: 5px solid var(--ink);
}

.nb-btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 900;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--ink);
  transition: var(--transition);
  cursor: pointer;
}

.nb-btn.primary { background: var(--primary); }
.nb-btn.secondary { background: var(--paper); }
.nb-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

.nb-section {
  margin-bottom: 3rem;
}

.nb-title {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 900;
  background: var(--accent-teal);
  padding: 0.5rem 1.5rem;
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  margin-bottom: 1.25rem;
}

.nb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.nb-grid-equal-height {
  grid-auto-rows: 1fr;
  grid-auto-flow: unset;
  align-items: stretch;
}

.nb-card {
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  padding: 1.5rem;
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--ink);
  transition: var(--transition);
}

/* 卡片 hover 效果见下方 .nb-card:hover */

.nb-chip {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 900;
  border: 2px solid var(--ink);
  border-radius: 4px;
  margin-bottom: 1rem;
}

.nb-chip-pink { background: var(--primary); }
.nb-chip-yellow { background: var(--accent-yellow); }
.nb-chip-blue { background: var(--accent-blue); }
.nb-chip-green { background: var(--accent-green); }

/* Stickers and Decorative Elements */
.nb-hero h1 span {
  display: inline-block;
  transform: rotate(-2deg);
  background: var(--accent-yellow);
  padding: 0 10px;
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.nb-sticker {
  position: absolute;
  padding: 0.5rem 1rem;
  font-size: 1.5rem;
  font-weight: 900;
  border: var(--border-width) solid var(--ink);
  background: var(--accent-yellow);
  box-shadow: 4px 4px 0 var(--ink);
  z-index: 3;
}

.sticker-1 { 
  top: 10px; 
  left: -20px; 
  transform: rotate(-15deg); 
  background: var(--accent-yellow); 
}

.sticker-2 { 
  bottom: 2rem;
  right: 20px; 
  transform: rotate(10deg); 
  background: var(--accent-pink);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Specific button styles for the hero */
.nb-hero .nb-btn.primary {
  background: var(--primary);
}

/* Hover & Active States */
.nb-card, .nb-btn, .nb-nav, .nb-title, .nb-sticker {
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.nb-card:hover {
  transform: translate(-4px, -4px) rotate(0.1deg);
  box-shadow: 12px 12px 0 var(--ink);
}

.nb-img {
  width: 100%;
  height: auto;
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}

.nb-divider {
  height: 2px;
  background: var(--ink);
  margin: 1.5rem 0;
}

/* Input */
.nb-input {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border: var(--border-width) solid var(--ink);
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--ink);
  outline: none;
  transition: var(--transition);
  margin-top: 1rem;
}

/* 标题 + 输入框同行（网址导航搜索行） */
.nb-search-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nb-search-row .nb-title {
  margin-bottom: 0;
  flex-shrink: 0;
}

.nb-search-row .nb-input {
  margin-top: 0;
  flex: 1;
  min-width: 240px;
  width: auto;
}

/* 分类筛选按钮组：与标题同行时铺满剩余空间 */
.nb-search-row .nb-filter-tags {
  margin-top: 0;
  flex: 1;
}

.nb-input:focus {
  box-shadow: 8px 8px 0 var(--ink);
  transform: translate(-2px, -2px);
}

/* Link List */
.nb-link-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.nb-link-category {
  font-size: 1.25rem;
  font-weight: 900;
  background: var(--accent-teal);
  padding: 0.375rem 0.75rem;
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  display: inline-block;
  width: fit-content;
  margin-top: 0.75rem;
}

.nb-link-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nb-link-item {
  width: 240px;
}

.nb-link-item a {
  display: block;
  padding: 0.625rem 0.75rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  transition: var(--transition);
}

.nb-link-item a:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
  background: var(--accent-yellow);
}

/* Badge / Pill / Ghost */
.nb-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: var(--border-width) solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  background: var(--accent-yellow);
  margin-bottom: 1rem;
}

.nb-pill {
  display: inline-block;
  padding: 0.25rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 800;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--paper);
  box-shadow: 2px 2px 0 var(--ink);
}

.nb-ghost {
  color: #666;
  font-weight: 600;
  opacity: 0.85;
}

/* Form Card */
.nb-form-card {
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  padding: 2rem;
  box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--ink);
}

/* Breadcrumb */
.nb-breadcrumb {
  display: inline-block;
  padding: 0.375rem 1rem;
  font-size: 0.875rem;
  font-weight: 800;
  border: var(--border-width) solid var(--ink);
  background: var(--accent-yellow);
  box-shadow: 3px 3px 0 var(--ink);
}

.nb-breadcrumb a {
  color: var(--ink);
  font-weight: 900;
}

/* List（恢复被重置的列表样式） */
.nb-list {
  list-style: disc;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nb-list li::marker {
  font-weight: 900;
}

/* Rotate 贴纸感卡片：平时保持整齐，hover 时轻微旋转 */
.nb-rotate {
  transition: var(--transition);
}

.nb-rotate:hover {
  transform: rotate(-1deg) translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--ink);
}

/* Small shadow */
.nb-shadow-sm {
  box-shadow: 3px 3px 0 var(--ink);
}

/* 活动影像文件类型图标（文件夹等） */
.file-type-icon {
  width: 48px;
  height: 48px;
}

/* Footer logo（又拍云） */
.logo-img {
  height: 20px;
  vertical-align: middle;
}

/* Filter Tags */
.nb-filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.nb-filter-btn {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 800;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--paper);
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  cursor: pointer;
  transition: var(--transition);
}

.nb-filter-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.nb-filter-btn.active {
  background: var(--accent-teal);
}

/* Group Card */
.nb-group-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

/* 群名称/描述可能含特殊字符长串，强制自动换行防止排版错乱 */
.nb-group-info,
.nb-group-info h4,
.nb-group-desc {
  overflow-wrap: break-word;
  word-break: break-word;
  min-width: 0;
}

.nb-group-avatar {
  flex-shrink: 0;
}

.nb-group-avatar img {
  width: 52px;
  height: 52px;
  object-fit: cover;
  border: var(--border-width) solid var(--ink);
}

.nb-group-info {
  flex: 1;
  min-width: 0;
}

.nb-group-info h4 {
  font-size: 1rem;
  font-weight: 900;
  margin-bottom: 0.25rem;
}

.nb-group-id {
  font-size: 0.8rem;
  color: #666;
  margin-bottom: 0.5rem;
}

.nb-group-desc {
  font-size: 0.9rem;
  color: #444;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.nb-group-meta {
  font-size: 0.8rem;
  color: #666;
  margin: 0;
}

.nb-group-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex-shrink: 0;
}

.nb-group-actions .nb-btn {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Toast */
.nb-toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--accent-teal);
  color: var(--ink);
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  border: var(--border-width) solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 1000;
}

.nb-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

@media (max-width: 768px) {
  .nb-group-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .nb-group-actions {
    flex-direction: row;
  }
}

.nb-btn:hover {
  transform: translateY(-4px) rotate(-1deg);
  box-shadow: 10px 10px 0 var(--ink);
  color: var(--ink); /* 强制保持文字颜色为黑色 */
}

.nb-btn:active, .nb-card:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--ink);
}

/* Showcase */
.nb-showcase-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.nb-featured-photo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.nb-photo-project {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(140px, 16vw, 200px);
  grid-template-areas:
    "copy qr"
    "gallery gallery";
  gap: 1.5rem;
  align-items: stretch;
  padding: 1.5rem;
}

.nb-photo-project-copy {
  grid-area: copy;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.25rem;
}

.nb-photo-project-copy p {
  margin-bottom: 1rem;
}

.nb-photo-project-copy .nb-btn {
  margin-top: auto;
}

.nb-photo-project-qr {
  grid-area: qr;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  align-self: start;
  padding-top: 1.75rem;
}

.nb-photo-project-qr .nb-photo-shot-cover {
  width: 100%;
  height: auto;
}

.nb-photo-gallery {
  grid-area: gallery;
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.nb-photo-gallery-triple {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
}

.nb-photo-gallery-double {
  grid-template-columns: 1fr;
  align-items: stretch;
}

.nb-photo-shot {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #f4f4f4;
  padding: 0.4rem;
}

.nb-photo-shot-cover {
  aspect-ratio: 1 / 1;
}

.nb-photo-shot-wide {
  aspect-ratio: 2 / 1;
}

.nb-compact-project-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.nb-compact-project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.nb-compact-project-card p {
  margin-bottom: 1rem;
}

.nb-compact-project-card .nb-btn,
.nb-compact-project-card .nb-pill {
  margin-top: auto;
  align-self: flex-start;
}

.nb-compact-project-card .nb-pill {
  background: var(--accent-pink);
}

/* Marquee / Ribbon */
.nb-marquee {
  width: 150%;
  background: var(--primary);
  color: var(--paper);
  padding: 1rem 0 1rem;
  overflow: visible;
  white-space: nowrap;
  border-top: var(--border-width) solid var(--ink);
  border-bottom: var(--border-width) solid var(--ink);
  flex-shrink: 0;
  z-index: 10;
  position: relative;
  top: -10px;
  left: -10px;
  transform: rotate(-1deg);

}

.nb-marquee-content {
  display: inline-block;
  animation: marquee 30s linear infinite;
  font-size: 2rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 2px;
  transform: skewY(-10deg);
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.nb-foot {
  text-align: center;
  padding: 3rem 1rem;
  font-weight: 800;
  border-top: var(--border-width) solid var(--ink);
  background: var(--paper);
  margin-top: 4rem;
}

/* 页脚三段：网站信息 / 备案 / 赞助，桌面端各自成行 */
.nb-foot .foot-beian,
.nb-foot .foot-sponsors {
  margin-top: 0.5rem;
}

.nb-foot a {
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.nb-foot img {
  vertical-align: middle;
}

.foot-sep {
  margin: 0 0.5rem;
}

@media (max-width: 768px) {
  .nb-nav { 
    padding: 1rem; 
    margin: 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nb-nav-bar {
    width: 100%;
    justify-content: space-between;
  }
  .nb-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    font-size: 1.25rem;
    line-height: 1;
    color: var(--ink);
    background: var(--accent-yellow);
    border: var(--border-width) solid var(--ink);
    box-shadow: 3px 3px 0 var(--ink);
    cursor: pointer;
  }
  .nb-nav-toggle:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0 var(--ink);
  }
  .nb-nav-links {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    margin-top: 1rem;
    width: 100%;
  }
  .nb-nav-links.open {
    display: flex;
  }
  .nb-nav-links .nav-link {
    padding: 0.75rem 0.5rem;
    border-bottom: 2px solid var(--ink);
  }
  .nb-nav-links .nb-dropdown {
    width: 100%;
  }
  .nb-nav-links .nb-dropdown > .nav-link {
    width: 100%;
    border: var(--border-width) solid transparent;
    border-bottom: 2px solid var(--ink);
    text-align: left;
  }
  .nb-nav-links .nb-dropdown > .nav-link:hover {
    border-color: var(--ink);
  }
  .nb-hero { 
    padding: 0 2rem; 
    flex-direction: column;
    gap: 2rem;
  }
  .nb-hero-video video {
    width: 100%;
    max-width: 300px;
  }
  .nb-video-cover {
    width: 100%;
    max-width: 300px;
  }
  .nb-grid { grid-template-columns: 1fr; }
  .nb-featured-photo-grid,
  .nb-compact-project-row {
    grid-template-columns: 1fr;
  }
  .nb-photo-project {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "qr"
      "gallery";
  }
  .nb-photo-gallery-triple,
  .nb-photo-gallery-double {
    grid-template-columns: 1fr;
  }
  .nb-foot .foot-beian a,
  .nb-foot .foot-sponsors a {
    display: block;
    margin-top: 0.25rem;
  }
  .foot-sep {
    display: none;
  }
}