/* ============================================================
   STEAM Science Hub - 面向基础教育的科学学习开源社区平台
   设计系统 & 全局样式
   ============================================================ */

/* --- CSS Variables (Light Theme - Default) --- */
:root {
  /* Colors */
  --color-bg: #f0f4f8;
  --color-surface: #ffffff;
  --color-surface-hover: #f8fafc;
  --color-surface-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #94a3b8;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-bg: #eef2ff;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* Subject Colors */
  --math-color: #ff6b6b;
  --physics-color: #4ecdc4;
  --chemistry-color: #45b7d1;
  --biology-color: #96ceb4;
  --geography-color: #ffd93d;
  --infotech-color: #06b6d4;

  /* Grade Colors */
  --primary-grade: #4caf50;
  --middle-grade: #2196f3;
  --high-grade: #9c27b0;

  /* Glass & Effects */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 10px 40px rgba(0, 0, 0, 0.1);
  --elevation-1: 0 1px 2px rgba(0, 0, 0, 0.04);
  --elevation-2: 0 4px 16px rgba(0, 0, 0, 0.08);
  --elevation-3: 0 12px 40px rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 250ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --header-height: 64px;
  --sidebar-width: 260px;
  --max-content-width: 1200px;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-hover: #263348;
  --color-surface-alt: #1a2332;
  --color-border: #334155;
  --color-border-light: #263348;
  --color-text: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-accent: #818cf8;
  --color-accent-light: #a5b4fc;
  --color-accent-bg: #1e1b4b;
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(51, 65, 85, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  --card-shadow-hover: 0 10px 40px rgba(0, 0, 0, 0.4);
  --elevation-1: 0 1px 2px rgba(0, 0, 0, 0.2);
  --elevation-2: 0 4px 16px rgba(0, 0, 0, 0.3);
  --elevation-3: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--color-text-tertiary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-secondary); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--font-size-3xl); letter-spacing: -0.01em; }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-accent-light); }

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-shadow);
  transition: all var(--transition-base);
}
.card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}
.btn:active { transform: scale(0.97); }
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
}
.btn-primary:hover {
  background: var(--color-accent-light);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-text-tertiary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}
.btn-ghost:hover {
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.btn-sm { padding: var(--space-1) var(--space-3); font-size: var(--font-size-xs); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--font-size-base); }
.btn-icon {
  width: 40px; height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
}
.btn-icon.btn-sm { width: 32px; height: 32px; }

/* --- Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.badge-primary { background: var(--color-accent-bg); color: var(--color-accent); }
.badge-success { background: #ecfdf5; color: var(--color-success); }
.badge-warning { background: #fffbeb; color: var(--color-warning); }

/* --- Tooltip --- */
.tooltip {
  position: relative;
}
.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-1) var(--space-3);
  background: var(--color-text);
  color: var(--color-bg);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 100;
}
.tooltip:hover::after { opacity: 1; }

/* ============ HEADER ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-lg);
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
}
.header-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-accent), #a855f7);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: white;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: nowrap;        /* 三期·总工修复（2026-10-08 二期问题1）：禁止换行，避免导航挤两行 */
  overflow: hidden;         /* 超出隐藏，配合下方 white-space:nowrap 单行 */
}
.header-nav a, .header-nav button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);  /* 缩小横向 padding，5 项导航+审核中心不挤 */
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;      /* 单行不换行 */
  flex-shrink: 0;           /* 不被压缩换行 */
}
.header-nav a:hover, .header-nav button:hover,
.header-nav a.active, .header-nav button.active {
  color: var(--color-text);
  background: var(--color-surface-alt);
}
.header-nav a.active, .header-nav button.active {
  color: var(--color-accent);
  background: var(--color-accent-bg);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.header-user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
}
.header-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent), #a855f7);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
}

/* Mobile menu toggle */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
  border-radius: var(--radius-md);
}

/* Xp bar in header（二期重设计：徽标 + 进度条 + 距下一级 + shimmer） */
.xp-bar-mini {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  transition: box-shadow 0.3s;
}
.xp-bar-mini:hover { box-shadow: 0 0 0 2px var(--color-accent-bg); }
.xp-bar-mini .xp-badge {
  font-size: 0.95rem;
  line-height: 1;
  filter: drop-shadow(0 1px 2px rgba(99,102,241,0.4));
}
.xp-bar-mini .xp-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 84px;
}
.xp-bar-mini .xp-fill {
  width: 84px;
  height: 7px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}
.xp-bar-mini .xp-fill-inner {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), #a855f7, #ec4899);
  background-size: 200% 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  position: relative;
  animation: xp-shimmer 2.4s linear infinite;
}
.xp-bar-mini .xp-fill-inner::after {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.45), transparent);
  transform: translateX(-100%);
  animation: xp-sheen 2.8s ease-in-out infinite;
}
@keyframes xp-shimmer {
  0% { background-position: 0% 0; }
  100% { background-position: 200% 0; }
}
@keyframes xp-sheen {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}
@keyframes xp-pulse {
  0% { filter: brightness(1); }
  35% { filter: brightness(1.6) drop-shadow(0 0 6px var(--color-accent)); }
  100% { filter: brightness(1); }
}
.xp-fill-inner.xp-pulse { animation: xp-shimmer 2.4s linear infinite, xp-pulse 0.6s ease-out; }
.xp-bar-mini .xp-diff {
  font-size: 9px;
  color: var(--color-text-tertiary);
  line-height: 1;
  white-space: nowrap;
}
.xp-bar-mini .xp-text {
  font-weight: 700;
  color: var(--color-accent);
}

/* Theme toggle */
.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

/* Logout button */
#logoutBtn {
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}
#logoutBtn:hover {
  color: var(--color-error) !important;
  background: rgba(239, 68, 68, 0.08);
}

/* ============ MAIN CONTENT ============ */
.main-content {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  min-height: calc(100dvh - var(--header-height));
}

/* ============ VIEW: HOME ============ */
.hero-section {
  text-align: center;
  padding: var(--space-12) 0 var(--space-8);
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-6);
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.hero-title .gradient-text {
  background: linear-gradient(135deg, var(--color-accent), #a855f7, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-8);
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  margin-top: var(--space-10);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-light);
}
.hero-stat {
  text-align: center;
}
.hero-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-accent);
}
.hero-stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* Grade Selector */
.grade-selector {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}
.grade-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  min-width: 120px;
}
.grade-btn .grade-icon { font-size: 2rem; }
.grade-btn .grade-age { font-size: var(--font-size-xs); opacity: 0.7; }
.grade-btn:hover {
  border-color: var(--color-accent-light);
  transform: translateY(-3px);
  box-shadow: var(--elevation-2);
}
.grade-btn.active {
  border-color: var(--color-accent);
  background: var(--color-accent-bg);
  color: var(--color-accent);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.2);
}

/* Subject Grid */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}
.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
}
.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}
.subject-card {
  position: relative;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-base);
  overflow: hidden;
}
.subject-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--subject-color, var(--color-accent));
}
.subject-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}
.subject-card .subject-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-3);
}
.subject-card .subject-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.subject-card .subject-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.subject-card .subject-apps {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
  flex-wrap: wrap;
}

/* Knowledge Tree */
.knowledge-tree {
  margin-top: var(--space-4);
}
.kp-level {
  margin-bottom: var(--space-6);
}
.kp-level-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  padding-left: var(--space-2);
}
.kp-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
}
.kp-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.kp-item:hover {
  border-color: var(--color-accent-light);
  background: var(--color-surface-hover);
  transform: translateX(4px);
}
.kp-item .kp-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  margin-top: 6px;
  flex-shrink: 0;
}
.kp-item .kp-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
}
.kp-item .kp-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}
.kp-item .kp-play-btn {
  margin-left: auto;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.9rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}
.kp-item .kp-play-btn:hover {
  background: var(--color-accent);
  color: white;
}

.author-featured-section { margin:var(--space-5) 0; }
.author-featured-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:var(--space-3); }
/* 0918-2：精选卡片溢出修复——grid 子项 min-width:0 防内容撑破列宽，长标题/描述截断 */
.author-featured-card { display:flex; flex-direction:column; gap:var(--space-1); padding:var(--space-3); border:1px solid var(--color-border); border-radius:var(--radius-lg); background:var(--color-surface-alt); cursor:pointer; min-width:0; overflow:hidden; }
.author-featured-card span { color:var(--color-accent); font-size:var(--font-size-xs); font-weight:700; }
.author-featured-card strong { font-size:var(--font-size-sm); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; max-width:100%; }
.author-featured-card small { color:var(--color-text-secondary); display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
@media (max-width:720px) { .author-featured-grid { grid-template-columns:1fr; } }


.my-featured-showcase { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:var(--space-5); margin-bottom:var(--space-8); }
/* 0918-2：精选位溢出修复——同上，min-width:0 + 内容截断 */
.my-featured-slot { min-height:170px; padding:var(--space-5); border:1px solid var(--color-border); border-radius:var(--radius-xl); background:var(--color-surface); text-align:left; box-shadow:var(--shadow-sm); min-width:0; overflow:hidden; display:flex; flex-direction:column; gap:var(--space-2); }
.my-featured-slot h3 { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; max-width:100%; }
.my-featured-slot p { display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden; }
.my-featured-slot.empty { display:flex; flex-direction:column; align-items:center; justify-content:center; cursor:pointer; color:var(--color-text-secondary); border-style:dashed; }
.my-featured-slot.empty strong { color:var(--color-accent); font-size:var(--font-size-lg); }
.my-featured-slot.empty small { margin-top:var(--space-2); }
.my-featured-rank { display:inline-block; color:var(--color-accent); font-size:var(--font-size-xs); font-weight:700; margin-bottom:var(--space-2); }
.my-featured-slot h3 { margin:0 0 var(--space-2); font-size:var(--font-size-base); }
.my-featured-slot p { min-height:38px; color:var(--color-text-secondary); font-size:var(--font-size-sm); }
@media (max-width: 720px) { .my-featured-showcase { grid-template-columns:1fr; } }


.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}
.featured-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.featured-card-banner {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.featured-card-body {
  padding: var(--space-5);
}
.featured-card-body h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-1);
}
.featured-card-body p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}
.featured-card-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.featured-card-tags .tag {
  padding: 2px 8px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.featured-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-border-light);
}
.featured-card-actions .stat {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ============ VIEW: APPS ============ */
.app-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-6);
  min-height: calc(100dvh - var(--header-height) - 100px);
}
.app-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  height: fit-content;
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
}
.app-sidebar-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
  padding: 0 var(--space-2);
}
.app-sidebar-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.app-sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  color: var(--color-text);
}
.app-sidebar-item:hover { background: var(--color-surface-alt); }
.app-sidebar-item.active {
  background: var(--color-accent-bg);
  color: var(--color-accent);
  font-weight: 600;
}
.app-sidebar-item .app-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.app-main {
  flex: 1;
}
.app-canvas-area {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 500px;
}
.app-canvas-area canvas {
  display: block;
  width: 100%;
}
.app-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.app-controls .control-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.app-controls label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
}
.app-controls select, .app-controls input[type="range"] {
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-xs);
}
.app-controls input[type="range"] { accent-color: var(--color-accent); }
.app-info {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.app-info h3 { font-size: var(--font-size-lg); margin-bottom: var(--space-1); }
.app-info p { font-size: var(--font-size-sm); color: var(--color-text-secondary); }

/* ============ VIEW: STUDIO (AI-first workspace) ============ */
.studio-layout {
  display: grid;
  /* 1010·问题5：调大预览区占比——原 0.9fr:1.3fr（约 41%:59%）AI 面板偏挤、预览偏小；
   * 改为 0.7fr:1.7fr（约 29%:71%），预览为主体，AI 对话面板仍够放聊天（min 320px）。 */
  grid-template-columns: minmax(320px, 0.7fr) minmax(460px, 1.7fr);
  gap: var(--space-4);
  /* 固定高度：左右两窗等高，不再随对话内容被撑高 */
  height: calc(100dvh - var(--header-height) - 120px);
  min-height: 560px;
  align-items: stretch;
}
.studio-ai-panel, .studio-workbench {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}
.studio-ai-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  box-shadow: var(--elevation-1);
}
.studio-ai-header {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.studio-ai-header strong { display: block; font-size: var(--font-size-base); }
.studio-ai-subtitle { display: block; margin-top: 2px; color: var(--color-text-secondary); font-size: var(--font-size-xs); }
.studio-session-actions { display: flex; gap: var(--space-1); }
.studio-session-bar {
  display: flex; justify-content: space-between; align-items: center; gap: var(--space-2);
  padding: var(--space-1) var(--space-3); background: var(--color-surface-alt);
  color: var(--color-text-secondary); font-size: var(--font-size-xs);
}
/* 0928：AI 模型选择器（紧凑小下拉，不抢视觉） */
.studio-session-bar .ai-model-select {
  margin-left: auto; padding: 2px 6px; font-size: var(--font-size-xs);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-text-secondary); cursor: pointer;
}
.studio-session-bar .ai-model-select:hover { border-color: var(--color-accent); color: var(--color-accent); }
.studio-context-banner { margin: var(--space-2) var(--space-3) 0; padding: var(--space-2); border-left: 3px solid var(--color-accent); background: var(--color-accent-bg); border-radius: var(--radius-sm); }
/* 对话区内部滚动，不撑高面板 */
.studio-ai-messages { flex: 1; min-height: 0; overflow-y: auto; padding: var(--space-3); display: flex; flex-direction: column; gap: var(--space-2); }
.ai-msg { max-width: 88%; padding: var(--space-2) var(--space-3); border-radius: var(--radius-lg); font-size: var(--font-size-sm); line-height: 1.5; animation: fadeIn 0.3s ease; white-space: pre-wrap; overflow-wrap: break-word; word-break: break-word; }
.ai-msg.user { align-self: flex-end; background: var(--color-accent-bg); color: var(--color-accent); border-bottom-right-radius: 4px; }
.ai-msg.assistant { align-self: flex-start; background: var(--color-surface-alt); color: var(--color-text); border-bottom-left-radius: 4px; }
.ai-msg-badge { display: inline-block; margin-left: var(--space-2); padding: 1px 8px; font-size: var(--font-size-xs); line-height: 1.6; color: var(--color-accent); background: var(--color-accent-bg); border-radius: var(--radius-full); vertical-align: middle; }
/* 首条欢迎语：去掉深色框，做成轻提示 */
.ai-msg.welcome {
  background: transparent;
  color: var(--color-text-secondary);
  padding: var(--space-1) 0;
  max-width: 100%;
  font-size: var(--font-size-sm);
}
.ai-msg .ai-label { font-size: var(--font-size-xs); font-weight: 600; margin-bottom: 2px; opacity: .7; }
.studio-ai-input-area { padding: var(--space-3); border-top: 1px solid var(--color-border); display: flex; gap: var(--space-2); }
.studio-ai-input-area textarea { flex: 1; padding: var(--space-2) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); font-family: var(--font-sans); font-size: var(--font-size-sm); resize: none; min-height: 40px; max-height: 120px; overflow-y: auto; transition: height 0.1s; }
.studio-ai-input-area textarea:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--color-accent-bg); }
.studio-ai-input-area .btn-send { width: 40px; height: 40px; align-self: flex-end; display: flex; align-items: center; justify-content: center; background: var(--color-accent); color: #fff; border: none; border-radius: var(--radius-md); cursor: pointer; font-size: 1.1rem; }
.studio-workbench { display: flex; flex-direction: column; min-height: 0; }
/* 预览面板固定撑满工作台；预览画布内部滚动，工具居中显示 */
.studio-preview { flex: 1; min-height: 0; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-xl); overflow: hidden; display: flex; flex-direction: column; box-shadow: var(--elevation-1); }
.studio-preview-header { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; background: var(--color-surface); gap: var(--space-2); flex-wrap: wrap; }
/* 预览/源代码 tab 切换（替代原折叠面板，位置与整体风格统一） */
.studio-view-tabs { display: flex; gap: 2px; background: var(--color-surface-alt); padding: 3px; border-radius: var(--radius-md); }
.studio-view-tab { border: none; background: transparent; padding: 6px 14px; border-radius: var(--radius-sm); font-size: var(--font-size-sm); color: var(--color-text-secondary); cursor: pointer; transition: all var(--transition-fast); font-family: inherit; }
.studio-view-tab:hover { color: var(--color-text); }
.studio-view-tab.active { background: var(--color-surface); color: var(--color-text); font-weight: 600; box-shadow: var(--elevation-1); }
.studio-preview-header-right { display: flex; align-items: center; gap: var(--space-2); }
.studio-preview-header span#studioPreviewStatus { color: var(--color-text-secondary); font-size: var(--font-size-xs); }
.studio-preview-canvas { flex: 1; min-height: 0; overflow: auto; display: flex; align-items: stretch; justify-content: center; background: #eef2f7; padding: var(--space-3); }
.studio-preview-canvas .tool-iframe { width: 100%; height: 100%; min-height: 0; border: none; border-radius: var(--radius-md); background: #fff; box-shadow: var(--elevation-1); }
.studio-actions { display: flex; gap: var(--space-3); padding: var(--space-4); border-top: 1px solid var(--color-border); }
.studio-actions .btn { flex: 1; min-height: 42px; }
.studio-code-content { flex: 1; min-height: 0; overflow-y: auto; padding: var(--space-4); background: var(--color-surface-alt); }
.studio-code-content pre { margin: 0; font-family: var(--font-mono); font-size: var(--font-size-xs); line-height: 1.7; color: var(--color-text); white-space: pre-wrap; word-break: break-word; }
.studio-code-content code { font-family: var(--font-mono); background: transparent; padding: 0; }
.studio-code-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; color: var(--color-text-tertiary); font-size: var(--font-size-sm); min-height: 160px; gap: var(--space-2); text-align: center; }
.studio-code-empty .empty-icon { font-size: 2.5rem; }
.btn-xs { font-size: var(--font-size-xs); padding: 3px 6px; }

.notification-bell { position:relative; border:0; background:transparent; color:var(--color-text); cursor:pointer; font-size:1.15rem; padding:6px; border-radius:var(--radius-md); }
.notification-bell:hover { background:var(--color-surface-alt); }
.notification-badge { position:absolute; top:0; right:0; min-width:16px; height:16px; padding:0 3px; border-radius:var(--radius-full); background:var(--color-error); color:#fff; font-size:10px; line-height:16px; text-align:center; }
.notification-popover { position:fixed; z-index:1000; top:64px; right:var(--space-4); width:min(360px, calc(100vw - 24px)); max-height:420px; overflow:auto; background:var(--color-surface); border:1px solid var(--color-border); border-radius:var(--radius-lg); box-shadow:var(--elevation-3); padding:var(--space-2); }
.notification-header { display:flex; justify-content:space-between; align-items:center; padding:var(--space-2); border-bottom:1px solid var(--color-border); }
.notification-item { display:flex; flex-direction:column; gap:3px; width:100%; text-align:left; border:0; border-radius:var(--radius-md); background:transparent; color:var(--color-text); padding:var(--space-3); cursor:pointer; }
.notification-item:hover, .notification-item.unread { background:var(--color-surface-alt); }
.notification-item span, .notification-item small { color:var(--color-text-secondary); font-size:var(--font-size-xs); }
.notification-empty { padding:var(--space-6); text-align:center; color:var(--color-text-tertiary); }
.checkin-only-panel { padding-bottom:var(--space-3); }


.contribution-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--elevation-1);
  user-select: none;
  -webkit-user-select: none;
  cursor: default;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.contribution-panel:hover {
  transform: translateY(-4px);
  box-shadow: var(--elevation-2);
  border-color: var(--color-accent-light);
}
.contribution-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}
.contribution-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}
.contribution-grid {
  display: flex;
  flex-direction: column;
  gap: 3px;
  overflow-x: auto;
  padding-bottom: 2px;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}
.contribution-row { display: flex; gap: 3px; }
.contribution-cell {
  width: 14px;
  height: 14px;
  min-width: 14px;
  border-radius: 3px;
  background: var(--color-border);
  cursor: default;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
/* 鼠标悬停：格子浮起 + 阴影 */
.contribution-cell:hover {
  transform: scale(1.35);
  box-shadow: 0 2px 6px rgba(0,0,0,0.25);
  z-index: 1;
  position: relative;
}
.contribution-cell.lv1 { background: #9be9a8; }
.contribution-cell.lv2 { background: #40c463; }
.contribution-cell.lv3 { background: #30a14e; }

/* 作者页等级进度条 */
.author-level-progress {
  margin: var(--space-3) 0;
}
.author-level-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.author-level-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), #a855f7);
  border-radius: var(--radius-full);
  transition: width 0.5s;
}
.author-level-next {
  margin-top: 4px;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.author-ach-badge {
  font-size: 1.4rem;
  padding: 4px 6px;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  cursor: default;
}

/* 鼠标点击按钮不显示浏览器默认黑框；键盘 Tab 导航仍保留焦点指示 */
button:focus:not(:focus-visible),
.btn-ghost:focus:not(:focus-visible),
.btn-icon:focus:not(:focus-visible),
.btn:focus:not(:focus-visible),
.studio-view-tab:focus:not(:focus-visible),
.preview-expand-btn:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}

/* 接力二创开关（保存/发布弹窗内） */
.remix-toggle-row { display: flex; align-items: center; gap: var(--space-2); }
.remix-switch { position: relative; display: inline-block; width: 42px; height: 22px; flex-shrink: 0; }
.remix-switch input { opacity: 0; width: 0; height: 0; }
.remix-slider {
  position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-border); border-radius: 22px; transition: background 0.2s ease;
}
.remix-slider::before {
  content: ""; position: absolute; height: 16px; width: 16px; left: 3px; top: 3px;
  background: #fff; border-radius: 50%; transition: transform 0.2s ease;
}
.remix-switch input:checked + .remix-slider { background: var(--color-accent); }
.remix-switch input:checked + .remix-slider::before { transform: translateX(20px); }
.remix-toggle-label { font-size: var(--font-size-xs); color: var(--color-text-secondary); }

@media (max-width: 1024px) {
  .studio-layout { grid-template-columns: 1fr; height: auto; }
  .studio-ai-panel, .studio-workbench { min-height: 0; }
  .studio-ai-panel { min-height: 420px; }
  .studio-workbench { min-height: 480px; }
}

.drafts-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.draft-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-xs);
  transition: all var(--transition-fast);
}
.draft-item:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-bg);
}
.draft-item .draft-name {
  flex: 1;
  font-weight: 500;
}
.draft-item .draft-date {
  color: var(--color-text-tertiary);
  font-size: 0.7rem;
}

/* -- Save Modal Form -- */
.save-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.save-form .form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.save-form label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.save-form input, .save-form textarea, .save-form select {
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}
.save-form input:focus, .save-form textarea:focus, .save-form select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}
.save-form textarea { min-height: 80px; resize: vertical; }

/* ============ VIEW: COMMUNITY ============ */
.community-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}
.community-tabs {
  display: flex;
  gap: var(--space-1);
  background: var(--color-surface-alt);
  padding: 3px;
  border-radius: var(--radius-lg);
}
.community-tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: none;
  background: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.community-tab.active {
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--elevation-1);
}
.community-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.community-search input {
  border: none;
  background: none;
  outline: none;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  width: 200px;
}
.community-search input::placeholder { color: var(--color-text-tertiary); }
.community-filter-bar {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.filter-chip {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
}
.filter-chip:hover { border-color: var(--color-accent); color: var(--color-accent); }
.filter-chip.active {
  background: var(--color-accent-bg);
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.filter-chip.disabled,
.filter-chip:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.filter-chip.reset-chip {
  border-color: var(--color-border);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.filter-chip.reset-chip:hover {
  border-color: var(--color-warning, #f59e0b);
  color: var(--color-warning, #f59e0b);
  background: rgba(245, 158, 11, 0.08);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-4);
}
.project-card {
  padding: var(--space-5);
}
.project-card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.project-card-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: white;
  flex-shrink: 0;
  overflow: hidden;
}
.project-card-meta h4 {
  font-size: var(--font-size-base);
  margin-bottom: 1px;
}
.project-card-meta .author {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.project-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
  line-height: 1.5;
}
.project-card-tags {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-light);
}
.project-card-footer .stats {
  display: flex;
  gap: var(--space-3);
}
.project-card-footer .stat-btn {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
/* 卡片"可二创"文字：灰字、无框、无图标，字号/间距与收藏等 stat 一致（0826 需求1） */
.project-card-footer .remix-text {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  padding: var(--space-1) var(--space-2);
  white-space: nowrap;
}
.project-card-footer .stat-btn:hover { color: var(--color-accent); background: var(--color-accent-bg); }
.project-card-footer .stat-btn.starred { color: #f59e0b; }
.project-card-footer .stat-btn.liked { color: #3b82f6; }

/* Overview - featured */
.featured-banner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.featured-banner-card {
  position: relative;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 180px;
  cursor: pointer;
  transition: all var(--transition-base);
}
.featured-banner-card:hover { transform: translateY(-2px); box-shadow: var(--card-shadow-hover); }
.featured-banner-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
  position: relative;
  z-index: 1;
}
.featured-banner-card p {
  font-size: var(--font-size-sm);
  opacity: 0.85;
  position: relative;
  z-index: 1;
}
.featured-banner-card .banner-bg {
  position: absolute;
  top: -20px;
  right: -20px;
  font-size: 8rem;
  opacity: 0.1;
}

/* ============ MEDIAPIPE POSE ============ */
.pose-container {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.pose-video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  max-height: 500px;
  background: #000;
}
.pose-video-wrap video, .pose-video-wrap canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: contain;
}
.pose-video-wrap canvas {
  z-index: 2;
}
.pose-overlay {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  right: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 3;
  gap: var(--space-3);
}
.pose-status {
  padding: var(--space-1) var(--space-3);
  background: rgba(0,0,0,0.6);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  backdrop-filter: blur(8px);
}
.pose-status.active { background: rgba(16, 185, 129, 0.8); }
.pose-info {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.pose-exercises {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}
.pose-exercise {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}
.pose-exercise:hover { border-color: var(--color-accent); background: var(--color-accent-bg); }
.pose-exercise.active { border-color: var(--color-accent); background: var(--color-accent-bg); color: var(--color-accent); }
.pose-feedback {
  text-align: center;
  padding: var(--space-3);
  background: var(--color-accent-bg);
  border-radius: var(--radius-lg);
  margin-top: var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
}

/* ============ MODAL ============ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn 0.2s ease;
}
.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 800px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--elevation-3);
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-surface);
  z-index: 1;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}
.modal-body {
  padding: var(--space-6);
}
.modal-close {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.modal-close:hover { background: var(--color-surface-hover); color: var(--color-text); }

/* ============ TOAST ============ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.toast {
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--elevation-2);
  font-size: var(--font-size-sm);
  animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  max-width: 360px;
}
.toast.success { border-left: 4px solid var(--color-success); }
.toast.error { border-left: 4px solid var(--color-error); }
/* 三期·持久 toast（上传中加载提示）：spinner 旋转图标 + 文案 */
.toast-persistent { border-left: 4px solid var(--color-accent); min-width: 220px; }
.toast-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: toast-spin 0.8s linear infinite;
  flex-shrink: 0;
}
@keyframes toast-spin { to { transform: rotate(360deg); } }
.toast-text { flex: 1; }

/* ============ Achievements Panel ============ */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
}
.achievement-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}
.achievement-item.unlocked { border-color: var(--color-success); }
.achievement-item.locked { opacity: 0.5; }
.achievement-item .ach-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
}
.achievement-item .ach-name { font-size: var(--font-size-sm); font-weight: 600; }
.achievement-item .ach-desc { font-size: var(--font-size-xs); color: var(--color-text-secondary); }

/* ============ SKELETON LOADING ============ */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-alt) 25%, var(--color-border-light) 50%, var(--color-surface-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ============ ANIMATIONS ============ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.animate-fade-in { animation: fadeIn 0.5s ease; }
.animate-slide-up { animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1); }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* Stagger children */
.stagger > * {
  opacity: 0;
  animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.1s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.2s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }
.stagger > *:nth-child(6) { animation-delay: 0.3s; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .studio-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    height: auto;
    min-height: 0;
  }
  .studio-ai-panel { min-height: 420px; }
  .studio-workbench { min-height: 480px; }
  .studio-preview { min-height: 420px; }
}

@media (max-width: 768px) {
  :root { --header-height: 56px; }
  .header-nav { display: none; }
  .header-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0; right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    gap: var(--space-2);
  }
  .mobile-menu-btn { display: flex; }
  .main-content { padding: var(--space-4); }
  .hero-section { padding: var(--space-8) 0 var(--space-4); }
  .hero-stats { gap: var(--space-6); flex-wrap: wrap; }
  .grade-selector { gap: var(--space-2); }
  .grade-btn { padding: var(--space-3); min-width: 90px; }
  .subject-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
  .app-container { grid-template-columns: 1fr; }
  .app-sidebar { position: static; display: flex; gap: var(--space-2); overflow-x: auto; padding: var(--space-3); }
  .app-sidebar-title { display: none; }
  .app-sidebar-list { flex-direction: row; }
  .app-sidebar-item { white-space: nowrap; width: auto; }
  .featured-banner { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .community-header { flex-direction: column; align-items: stretch; }
  .community-search { width: 100%; }
  .community-search input { width: 100%; }
  .kp-list { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.5rem; }
  .hero-actions { flex-direction: column; }
  .grade-btn { min-width: 75px; padding: var(--space-2); font-size: var(--font-size-xs); }
  .grade-btn .grade-icon { font-size: 1.5rem; }
}

/* ============ PRINT / REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============ Review Stars ============ */
.stars { display: flex; gap: 2px; }
.stars .star { color: var(--color-border); font-size: var(--font-size-sm); cursor: pointer; transition: color var(--transition-fast); }
.stars .star.filled { color: #f59e0b; }
.stars .star:hover { color: #f59e0b; }

/* Review section */
.reviews-section { margin-top: var(--space-6); }
.review-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}
.review-item:last-child { border-bottom: none; }
.review-avatar {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-surface-alt);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: var(--font-size-xs);
  flex-shrink: 0;
}
.review-content { flex: 1; }
.review-user { font-weight: 600; font-size: var(--font-size-sm); }
.review-text { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-top: var(--space-1); }

/* Publish form */
.publish-form { display: flex; flex-direction: column; gap: var(--space-4); }
.publish-form input, .publish-form textarea, .publish-form select {
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}
.publish-form input:focus, .publish-form textarea:focus, .publish-form select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}
.publish-form textarea { min-height: 100px; resize: vertical; }

/* Stats section on home */
.stats-banner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.stats-banner-card {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}
.stats-banner-card:hover { box-shadow: var(--card-shadow-hover); transform: translateY(-2px); }
.stats-banner-card .stat-icon { font-size: 2rem; margin-bottom: var(--space-2); }
.stats-banner-card .stat-num { font-size: var(--font-size-2xl); font-weight: 800; color: var(--color-accent); }
.stats-banner-card .stat-label { font-size: var(--font-size-sm); color: var(--color-text-secondary); }

/* View switching */
.view { display: none; animation: fadeIn 0.3s ease; }
.view.active { display: block; }

/* ============ PROFILE PANEL (个人档案) ============ */
.profile-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.profile-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--color-accent-bg), var(--color-surface-alt));
  border-radius: var(--radius-xl);
}
.profile-avatar-large {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent), #a855f7);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}
.profile-header-info h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}
.profile-header-info .profile-bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.profile-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
.profile-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
}
.profile-field .field-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
}
.profile-field .field-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}
.profile-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* ============ PROFILE LEVEL CARD ============ */
.profile-level-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border-radius: var(--radius-lg);
}

/* ============ PROFILE EDIT FORM ============ */
.profile-edit-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.edit-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.edit-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.edit-input,
.edit-select,
.edit-textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
}
.edit-input:focus,
.edit-select:focus,
.edit-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}
.edit-textarea {
  min-height: 60px;
  resize: vertical;
}
.edit-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}
.edit-error {
  padding: var(--space-2) var(--space-3);
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: var(--radius-md);
  color: #ef4444;
  font-size: var(--font-size-sm);
  font-weight: 500;
  animation: shake 0.4s ease;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}
.editable-avatar {
  transition: all var(--transition-fast);
}
.avatar-upload-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.avatar-upload-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: inherit;
  display: block;
}

/* ============ CHANGE PASSWORD PANEL ============ */
.change-pwd-panel {
  max-width: 460px;
  margin: 0 auto;
}
.change-pwd-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-5);
}
.change-pwd-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0 var(--space-5);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.change-pwd-divider::before,
.change-pwd-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.error-text {
  color: var(--color-error) !important;
  display: none;
}
.error-text.show {
  display: block;
}
/* Password rule chips */
.rule-chip {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  background: var(--color-surface-alt);
  color: var(--color-text-tertiary);
  transition: all var(--transition-fast);
}
.rule-chip.pass {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-success);
}
.rule-chip.fail {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}
.change-pwd-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.change-pwd-status {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
  animation: authFormIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.change-pwd-status.success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.25);
}
.change-pwd-status.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.25);
}
.spinner-sm {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 4px;
}

/* ============ XP RULES (经验规则) ============ */
.xp-rules-section {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
}
.xp-rules-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.xp-rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-2);
}
.xp-rule-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-fast);
}
.xp-rule-item:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-bg);
}
.xp-rule-item .xp-rule-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
}
.xp-rule-item .xp-rule-text {
  flex: 1;
}
.xp-rule-item .xp-rule-action {
  font-size: var(--font-size-xs);
  font-weight: 600;
}
.xp-rule-item .xp-rule-desc {
  font-size: 0.7rem;
  color: var(--color-text-tertiary);
}
.xp-rule-item .xp-rule-value {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* ============ TAG INPUT (标签输入) ============ */
.tag-input-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.tag-input-wrapper {
  display: flex;
  gap: var(--space-2);
}
.tag-input-wrapper input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}
.tag-input-wrapper input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}
.tag-input-wrapper .btn-add-tag {
  padding: var(--space-2) var(--space-3);
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: all var(--transition-fast);
}
.tag-input-wrapper .btn-add-tag:hover {
  background: var(--color-accent-light);
}
.tag-list-edit {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  min-height: 28px;
}
.tag-list-edit .tag-edit-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 8px;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
}
.tag-list-edit .tag-edit-item .tag-remove {
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}
.tag-list-edit .tag-edit-item .tag-remove:hover { opacity: 1; }
.tag-list-edit .tag-empty {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* ============ AUTHOR INFO (作者信息) ============ */
.author-info-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.author-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  background: linear-gradient(135deg, var(--color-accent-bg), var(--color-surface-alt));
  border-radius: var(--radius-xl);
}
.author-avatar-large {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.author-header-info h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 2px;
}
.author-header-info .author-bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.author-stats-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.author-stat-pill {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 12px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.author-stat-pill .pill-value {
  color: var(--color-accent);
}
.author-achievements-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.author-ach-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 3px 10px;
  background: #ecfdf5;
  color: var(--color-success);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}
.author-works-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
}
.author-sort-btns {
  display: flex;
  gap: var(--space-1);
  background: var(--color-surface-alt);
  padding: 2px;
  border-radius: var(--radius-md);
}
.author-sort-btn {
  padding: 4px 12px;
  border: none;
  background: none;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.author-sort-btn.active {
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--elevation-1);
}
.author-works-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-3);
}
.author-work-card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.author-work-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
}
.author-work-card h4 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}
.author-work-card .work-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  line-height: 1.4;
}
.author-work-card .work-stats {
  display: flex;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* ============ WORKS PAGE (我的作品) ============ */
.works-empty {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--color-text-tertiary);
}
.works-empty .empty-icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
}
.works-empty .empty-text {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}
.works-empty .empty-hint {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-6);
}
.draft-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}
.draft-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--card-shadow-hover);
}
.draft-card .draft-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.draft-card .draft-card-name {
  font-size: var(--font-size-base);
  font-weight: 700;
}
.draft-card .draft-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.draft-card .draft-card-meta {
  display: flex;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  flex-wrap: wrap;
}
.draft-card .draft-card-tags {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}
.draft-card .draft-card-tags .tag {
  padding: 2px 8px;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 500;
}
.draft-card .draft-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}
.draft-card.rejected { border-color: var(--color-error); }
.draft-card .draft-card-reject {
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: #fef2f2;
  color: var(--color-error);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  line-height: 1.5;
}

/* ============================================================
   REPOSITORY / PROJECT WORKSPACE
   ============================================================ */

/* Topbar */
.repo-topbar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 56px;
  z-index: 20;
}
.repo-back-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.repo-back-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-accent);
}
.repo-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  flex: 1;
}
.repo-actions {
  display: flex;
  gap: var(--space-2);
}

/* Layout */
.repo-layout {
  display: grid;
  grid-template-columns: 220px 1fr 320px; /* 三期·总工修复：右侧加宽 260→320，给上下文/版本历史更多空间，避免内容被挤 */
  gap: 0;
  height: calc(100vh - 180px);
  min-height: 500px;
  border-top: 1px solid var(--color-border);
}

/* Sidebar - File Tree */
.repo-sidebar {
  background: var(--color-surface-alt);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.repo-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-surface-alt);
  z-index: 1;
}
.btn-icon {
  width: 26px; height: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-accent);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.btn-icon:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.repo-file-tree {
  padding: var(--space-2);
  flex: 1;
  overflow-y: auto;
}
.repo-file-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.82rem;
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}
.repo-file-item:hover {
  background: var(--color-accent-bg);
}
.repo-file-item.active {
  background: var(--color-accent-bg);
  color: var(--color-accent);
  font-weight: 600;
}
.repo-file-item .file-icon {
  flex-shrink: 0;
  font-size: 1rem;
  width: 20px;
  text-align: center;
}
/* 三期·总工修复（2026-10-07 二期问题3）：文件夹嵌套树样式 */
.repo-folder { margin-bottom: 2px; }
.repo-folder-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  user-select: none;
}
.repo-folder-row:hover { background: var(--color-surface-alt); }
.repo-folder-row .folder-toggle {
  width: 12px;
  flex-shrink: 0;
  color: var(--color-text-tertiary);
  font-size: 0.7rem;
}
.repo-folder-row .folder-icon { flex-shrink: 0; }
.repo-folder-children { /* 子项缩进由 JS padding-left 控制 */ }
.repo-file-item .file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.repo-file-item .file-del {
  opacity: 0;
  width: 18px; height: 18px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-error);
  color: #fff;
  font-size: 10px;
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}
.repo-file-item:hover .file-del { opacity: 1; }

/* Editor */
.repo-editor {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  overflow: hidden;
}
.repo-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-alt);
}
.repo-editor-filename {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}
.repo-editor-lang {
  font-size: 0.7rem;
  padding: 2px 8px;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-weight: 600;
}
.repo-editor-body {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
}
.repo-editor-empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  gap: var(--space-2);
}
.repo-editor-linenos {
  width: 48px;
  background: var(--color-surface-alt);
  border-right: 1px solid var(--color-border);
  overflow: hidden;
  text-align: right;
  padding: 12px 8px;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-tertiary);
  user-select: none;
  flex-shrink: 0;
  display: none;
}
.repo-editor-textarea {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  padding: 12px 16px;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-surface);
  tab-size: 2;
  white-space: pre;
  overflow-wrap: normal;
  overflow: auto;
}
.repo-editor-textarea::selection {
  background: var(--color-accent-bg);
}
.repo-editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
}
.repo-editor-status {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* Right Panel - Versions + Share */
.repo-panel {
  background: var(--color-surface-alt);
  border-left: 1px solid var(--color-border);
  /* 三期·总工修复：父面板不再整体竖向滚动，让内部 section 各自滚动，避免嵌套滚动条混乱 */
  overflow: hidden;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0; /* flex 子项不撑爆列宽，让内部 overflow 生效 */
}
.repo-panel-section {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0; /* flex 子项可收缩，让内部 content 区域可滚动 */
}
.repo-panel-header {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-bottom: 1px solid var(--color-border);
}
.repo-version-list {
  /* 三期·总工修复（2026-10-05 终版）：滚动条强制常驻（overflow:scroll）+ 不遮字。
     内容刚好溢出几像素时 overflow:auto 不显示滚动条 → 底部被遮。
     scrollbar-gutter:stable 预留空间，滚动条不挤压内容。 */
  flex: 1 1 auto;
  min-height: 0;
  overflow: scroll;
  scrollbar-gutter: stable;
}
/* 三期·版本历史/项目上下文滚动条常驻样式（含 Firefox 与 Chrome 两套） */
.repo-version-list,
.repo-context-content {
  scrollbar-width: auto;              /* Firefox：始终显示滚动条 */
  scrollbar-color: var(--color-border) var(--color-surface-alt);
}
.repo-version-list::-webkit-scrollbar,
.repo-context-content::-webkit-scrollbar {
  -webkit-appearance: none;
  width: 10px;                        /* 纵向滚动条宽度（常驻） */
  height: 10px;                       /* 横向滚动条厚度（常驻） */
  display: block;
}
.repo-version-list::-webkit-scrollbar-thumb,
.repo-context-content::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 5px;
  border: 2px solid var(--color-surface-alt);
}
.repo-version-list::-webkit-scrollbar-thumb:hover,
.repo-context-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-tertiary);
}
.repo-version-list::-webkit-scrollbar-track,
.repo-context-content::-webkit-scrollbar-track {
  background: var(--color-surface-alt);
}
.repo-version-list::-webkit-scrollbar-corner,
.repo-context-content::-webkit-scrollbar-corner {
  background: var(--color-surface-alt);
}
/* 历史版本条目内容：不换行长行靠横向滚动查看（容器可左右拉），同时恢复换行能力避免遮字 */
.repo-version-list .repo-version-item,
.repo-version-list .v-desc,
.repo-version-list .v-changes {
  white-space: pre-wrap;
  overflow-wrap: normal;
  min-width: 0;
}
.repo-version-item {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.78rem;
}
.repo-version-item:last-child {
  border-bottom: none;
}
.repo-version-item .v-ver {
  font-weight: 700;
  color: var(--color-accent);
}
.repo-version-item .v-date {
  color: var(--color-text-tertiary);
  margin-left: var(--space-2);
}
.repo-version-item .v-desc {
  color: var(--color-text-secondary);
  margin-top: 2px;
}
.repo-share-box {
  padding: var(--space-3);
}
.repo-qr-container {
  text-align: center;
  margin-bottom: var(--space-3);
}
.repo-qr-container canvas {
  border-radius: var(--radius-md);
  border: 4px solid #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.repo-share-url {
  width: 100%;
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  background: var(--color-surface-alt);
  font-family: monospace;
  box-sizing: border-box;
}

/* Bottom Action Bar */
.repo-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  position: sticky;
  bottom: 0;
  z-index: 20;
}
.repo-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.repo-bc-sep { color: var(--color-text-tertiary); }
.repo-bc-item { font-weight: 500; }
.repo-bottom-actions {
  display: flex;
  gap: var(--space-2);
}

/* Commit Modal */
.commit-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.commit-modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  width: 480px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.commit-modal h3 {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-lg);
}
.commit-modal label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
  color: var(--color-text-secondary);
}
.commit-modal input,
.commit-modal textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  background: var(--color-surface);
  color: var(--color-text);
  box-sizing: border-box;
  margin-bottom: var(--space-3);
}
.commit-modal textarea {
  resize: vertical;
  min-height: 80px;
  font-family: inherit;
}
.commit-modal .commit-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* Responsive */
@media (max-width: 900px) {
  .repo-layout {
    grid-template-columns: 180px 1fr;
  }
  .repo-panel { display: none; }
}
@media (max-width: 600px) {
  .repo-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .repo-sidebar { border-right: none; border-bottom: 1px solid var(--color-border); max-height: 120px; }
  .repo-panel { display: none; }
}

/* Workspace tab enhanced */
.workspace-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.workspace-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}
.workspace-card .ws-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.workspace-card .ws-icon {
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-bg);
  border-radius: var(--radius-md);
}
.workspace-card .ws-name {
  font-weight: 700;
  font-size: var(--font-size-base);
}
.workspace-card .ws-meta {
  display: flex;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  flex-wrap: wrap;
}

/* ============================================================
   PROJECT CONTEXT PANEL
   ============================================================ */
.repo-context-content {
  padding: var(--space-3);
  font-size: 0.73rem;
  /* 三期·总工修复（2026-10-05 终版）：滚动条强制常驻（overflow:scroll）+ 不遮字。
     之前用 overflow:auto 内容刚好溢出几像素时不显示滚动条 → 底部被遮。
     scrollbar-gutter:stable 预留滚动条空间，内容不会被挤压/遮挡。 */
  flex: 1 1 auto;
  min-height: 0;
  overflow: scroll;
  scrollbar-gutter: stable;
}
.repo-context-content .context-file-item,
.repo-context-content .context-module-item,
.repo-context-content .context-dep-item,
.repo-context-content .context-summary {
  white-space: pre-wrap;       /* 正常换行 + 长行可横向滚动 */
  overflow-wrap: normal;
  min-width: 0;
}
.context-summary {
  padding: var(--space-2) var(--space-3);
  background: var(--color-accent-bg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  line-height: 1.6;
  color: var(--color-accent);
  font-weight: 500;
}
.context-files-title,
.context-modules-title,
.context-deps-title {
  font-weight: 700;
  font-size: 0.7rem;
  color: var(--color-text-secondary);
  margin: var(--space-2) 0 var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.context-files {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.context-file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.73rem;
}
.context-file-item:hover {
  background: var(--color-surface-alt);
}
.context-file-role {
  font-size: 0.65rem;
  color: var(--color-text-tertiary);
  font-style: italic;
}
.context-modules {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.context-module-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px;
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  font-size: 0.73rem;
}
.context-module-name {
  font-weight: 600;
  color: var(--color-text);
}
.context-module-file {
  font-size: 0.65rem;
  color: var(--color-text-tertiary);
  font-family: monospace;
}
.context-deps {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.context-dep-item {
  padding: 2px 8px;
  font-size: 0.7rem;
  font-family: monospace;
  color: var(--color-text-secondary);
}
.context-dep-more {
  font-size: 0.65rem;
  color: var(--color-text-tertiary);
  text-align: center;
  padding: 4px;
}

/* ============================================================
   VERSION ACTIONS
   ============================================================ */
.v-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
  margin-left: var(--space-2);
}
.v-action-btn {
  width: 24px;
  height: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  line-height: 1;
  transition: all 0.15s ease;
}
.v-action-btn:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.v-changes {
  font-size: 0.68rem;
  color: var(--color-text-tertiary);
  margin-top: 2px;
  line-height: 1.3;
}

/* ============================================================
   DIFF MODAL
   ============================================================ */
.diff-modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 760px;
  max-width: 95vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.diff-modal-header {
  padding: var(--space-5) var(--space-5) var(--space-3);
  border-bottom: 1px solid var(--color-border);
}
.diff-modal-header h3 {
  margin: 0 0 var(--space-1);
  font-size: var(--font-size-xl);
  color: var(--color-accent);
}
.diff-stats {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-5);
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}
.diff-stat {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-surface);
}
.diff-stat-add {
  color: #16a34a;
  background: #f0fdf4;
}
.diff-stat-del {
  color: #dc2626;
  background: #fef2f2;
}
.diff-content {
  flex: 1;
  overflow-y: auto;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.6;
  max-height: 420px;
}
.diff-line {
  display: flex;
  padding: 0 8px;
  min-height: 20px;
}
.diff-line-same {
  color: var(--color-text-secondary);
}
.diff-line-add {
  background: #dcfce7;
  color: #166534;
}
.diff-line-remove {
  background: #fee2e2;
  color: #991b1b;
}
.diff-ln {
  display: inline-block;
  width: 42px;
  min-width: 42px;
  text-align: right;
  padding-right: 10px;
  color: var(--color-text-tertiary);
  user-select: none;
  font-size: 10px;
  line-height: 1.6;
}
.diff-code {
  white-space: pre;
  overflow-x: auto;
}
.diff-modal-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
}

/* Dark theme overrides for diff */
[data-theme="dark"] .diff-line-add {
  background: #052e16;
  color: #4ade80;
}
[data-theme="dark"] .diff-line-remove {
  background: #450a0a;
  color: #f87171;
}
[data-theme="dark"] .diff-stat-add {
  background: #052e16;
  color: #4ade80;
}
[data-theme="dark"] .diff-stat-del {
  background: #450a0a;
  color: #f87171;
}

/* ============================================================
   TOOL UPLOAD: 社区工具上传与发布
   ============================================================ */

.upload-section {
  max-width: 720px;
}

/* --- Step Indicator --- */
.upload-step-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--space-6);
  padding: var(--space-4) var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  flex-wrap: wrap;
}

.upload-step {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

.upload-step.active {
  opacity: 1;
}

.upload-step.done {
  opacity: 0.7;
}

.upload-step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  background: var(--color-surface-alt);
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
}

.upload-step.active .upload-step-icon {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 0 0 4px var(--color-accent-bg);
}

.upload-step.done .upload-step-icon {
  background: var(--color-success);
  color: #fff;
}

.upload-step-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

.upload-step-line {
  width: 32px;
  height: 2px;
  background: var(--color-border);
  margin: 0 var(--space-2);
  border-radius: 1px;
}

/* --- Mode Toggle --- */
.upload-mode-toggle {
  display: inline-flex;
  background: var(--color-surface-alt);
  border-radius: 10px;
  padding: 3px;
  gap: 0;
}

.upload-mode-btn {
  padding: var(--space-2) var(--space-4);
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.upload-mode-btn.active {
  background: var(--color-surface);
  color: var(--color-accent);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.upload-mode-btn:hover:not(.active) {
  color: var(--color-text);
}

/* --- Drop Zone --- */
.upload-drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: 16px;
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: all 0.25s ease;
  cursor: pointer;
}

.upload-drop-zone:hover,
.upload-drop-zone.drag-over {
  border-color: var(--color-accent);
  background: var(--color-accent-bg);
}

.upload-drop-zone.drag-over {
  transform: scale(1.01);
}

.upload-drop-icon {
  font-size: 3rem;
  margin-bottom: var(--space-3);
  line-height: 1;
}

.upload-drop-text {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.upload-drop-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-3);
}

.upload-drop-formats {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-3);
}

/* --- URL Zone --- */
.upload-url-zone {
  padding: var(--space-4);
}

.upload-url-input {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

.upload-url-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}

/* --- Uploaded File Info --- */
.upload-file-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-alt);
  border-radius: 12px;
  margin-top: var(--space-4);
  border: 1px solid var(--color-border);
}

.upload-file-icon {
  font-size: 1.5rem;
}

.upload-file-details {
  flex: 1;
  min-width: 0;
}

.upload-file-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-file-size {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* --- 二期·多文件模块：多文件上传信息 + 文件清单 chips + 多文件徽章 --- */
.upload-file-info-multi {
  align-items: flex-start;
}

.upload-file-tree {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: var(--space-2);
}

.upload-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.68rem;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 2px 8px;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.multifile-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border-radius: var(--radius-full);
  padding: 2px 8px;
  vertical-align: middle;
}

/* --- Source Info Badge --- */
.upload-source-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-alt);
  border-radius: 8px;
  margin-bottom: var(--space-3);
}

.upload-source-badge {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 2px 8px;
  border-radius: 6px;
}

/* --- Preview Container --- */
.upload-preview-container {
  margin-top: var(--space-4);
}

/* --- Iframe Container (reused for preview) --- */
.tool-iframe-container {
  position: relative;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
}

.tool-iframe-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.tool-iframe-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-iframe {
  display: block;
  width: 100%;
  height: 60vh;
  min-height: 400px;
  border: none;
  background: #fff;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .upload-step-label {
    display: none;
  }

  .upload-step-icon {
    width: 28px;
    height: 28px;
  }

  .upload-step-line {
    width: 16px;
  }

  .upload-drop-zone {
    padding: var(--space-6) var(--space-4);
  }

  .upload-mode-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
  }

  .tool-iframe {
    height: 45vh;
    min-height: 300px;
  }
}

/* --- Dark Theme --- */
[data-theme="dark"] .upload-drop-zone {
  border-color: var(--color-border);
}

[data-theme="dark"] .upload-drop-zone:hover,
[data-theme="dark"] .upload-drop-zone.drag-over {
  background: rgba(99, 102, 241, 0.08);
}

[data-theme="dark"] .upload-mode-toggle {
  background: var(--color-surface-alt);
}

[data-theme="dark"] .upload-mode-btn.active {
  background: var(--color-surface);
  color: var(--color-accent-light);
}

[data-theme="dark"] .upload-file-info {
  background: var(--color-surface-alt);
}

[data-theme="dark"] .tool-iframe {
  background: #1a1a2e;
}

[data-theme="dark"] .tool-iframe-toolbar {
  background: var(--color-surface);
  border-color: var(--color-border);
}

[data-theme="dark"] .upload-source-info {
  background: var(--color-surface-alt);
}

/* ============================================================
   WORKS MANAGEMENT (作品管理界面)
   ============================================================ */

/* --- Toolbar --- */
.works-manage-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.works-manage-filters {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.works-manage-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  flex: 1;
  justify-content: flex-end;
}

/* --- Search --- */
.works-manage-search {
  position: relative;
  display: flex;
  align-items: center;
}

.works-manage-search .search-icon {
  position: absolute;
  left: 10px;
  font-size: 0.9rem;
  pointer-events: none;
}

.works-manage-search .search-input {
  padding: 6px 12px 6px 32px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: var(--font-size-sm);
  background: var(--color-bg);
  color: var(--color-text);
  width: 200px;
  transition: border-color 0.2s, width 0.2s;
  outline: none;
}

.works-manage-search .search-input:focus {
  border-color: var(--color-accent);
  width: 260px;
}

/* --- Batch Action Bar --- */
.works-manage-batch-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 12px;
  background: var(--color-accent);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--color-accent-light);
  border-radius: 8px;
  animation: fadeSlideIn 0.25s ease;
}

.batch-count {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-accent);
  white-space: nowrap;
}

/* --- Card Grid --- */
.works-manage-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* --- Works Card --- */
.works-card {
  display: flex;
  align-items: stretch;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
  position: relative;
}

.works-card:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.works-card.selected {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.works-card.hidden-card {
  opacity: 0.75;
}

.works-card.hidden-card .works-card-body {
  filter: grayscale(30%);
}

/* --- Checkbox area --- */
.works-card-check {
  display: flex;
  align-items: center;
  padding: 0 12px;
  cursor: pointer;
  flex-shrink: 0;
}

.works-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #fff;
  background: var(--color-bg);
  transition: all 0.2s;
}

.works-checkbox.checked {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.works-card:hover .works-checkbox:not(.checked) {
  border-color: var(--color-accent-light);
}

/* --- Card Body --- */
.works-card-body {
  flex: 1;
  padding: var(--space-4);
  cursor: pointer;
  min-width: 0;
}

.works-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.works-card-avatar {
  width: 36px;
  height: 36px;
  overflow: hidden;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.works-card-title h4 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 4px;
}

.works-card-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: 2px;
}

.works-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.works-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.works-card-tags {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.works-card-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.status-badge {
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
}

.status-published {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
}

.status-hidden {
  background: rgba(245, 158, 11, 0.12);
  color: #f59e0b;
}

[data-theme="dark"] .status-published {
  background: rgba(16, 185, 129, 0.18);
}

[data-theme="dark"] .status-hidden {
  background: rgba(245, 158, 11, 0.18);
}

.works-card-stats {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* --- Card Actions --- */
.works-card-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-3);
  justify-content: flex-start;
  align-items: stretch;
  flex-shrink: 0;
  width: 104px;
  border-left: 1px solid var(--color-border);
}

/* 操作区按钮统一尺寸与背景色：学「使用」按钮，都带实底背景，竖排不撑高卡片 */
.works-card-actions .btn,
.works-card-actions .works-action-btn,
.works-card-actions .works-action-span {
  width: 100%;
  min-height: 30px;
  padding: 4px 8px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.works-card-actions .btn:active { transform: scale(0.96); }

/* 主操作：使用/文件/AI聊天 —— 实底背景 */
.works-card-actions .btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.works-card-actions .btn-primary:hover { background: var(--color-accent-light); }

.works-card-actions .btn-secondary {
  background: var(--color-surface-hover);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.works-card-actions .btn-secondary:hover { background: var(--color-accent-bg); color: var(--color-accent); }

.works-card-actions .btn-chat {
  background: #eef2ff;
  color: #4f46e5;
}
.works-card-actions .btn-chat:hover { background: #e0e7ff; }

.works-card-actions .works-action-span {
  background: var(--color-surface-alt);
  color: var(--color-text-tertiary);
  cursor: default;
}

/* 更多下拉按钮 */
.works-more-wrap { position: relative; }
.works-more-btn {
  width: 100%;
  min-height: 30px;
  padding: 4px 8px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-hover);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.works-more-btn:hover { background: var(--color-accent-bg); color: var(--color-accent); border-color: var(--color-accent); }
.works-more-menu {
  min-width: 150px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: var(--card-shadow-hover);
  padding: 4px;
  display: none;
  flex-direction: column;
  gap: 2px;
}
.works-more-menu.open { display: flex; }
.works-more-menu button {
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  white-space: nowrap;
}
.works-more-menu button:hover { background: var(--color-surface-alt); }
.works-more-menu .menu-danger { color: var(--color-error); }
.works-more-menu .menu-warning { color: var(--color-warning); }
.works-more-menu .menu-accent { color: var(--color-accent); }

/* 接力二创统一样式（0826 问题2：社区/弹窗/我的作品三处一致） */
.remix-btn {
  color: #fff !important;
  background: var(--color-accent) !important;
  border: 1px solid var(--color-accent);
  font-weight: 600;
}
.remix-btn:hover {
  background: var(--color-accent-light) !important;
  border-color: var(--color-accent-light);
  color: #fff !important;
}
.remix-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  background: var(--color-surface-alt);
  color: var(--color-text-tertiary);
  border: 1px dashed var(--color-border);
  white-space: nowrap;
}
.remix-badge-sm {
  font-size: 0.6rem;
  padding: 1px 6px;
}
.remix-badge.remix-open {
  color: var(--color-accent);
  border-color: var(--color-accent);
  border-style: solid;
  background: var(--color-accent-bg);
}
/* 我的作品卡片「已赞」标记（0826 问题3：只加状态标记，不加可点按钮） */
.liked-mark {
  display: inline-block;
  margin-left: var(--space-1);
  padding: 1px 8px;
  font-size: var(--font-size-xs);
  line-height: 1.6;
  color: #3b82f6;
  background: #eff6ff;
  border-radius: var(--radius-full);
}

/* --- Pagination --- */
.works-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding: var(--space-3) 0;
}

.pagination-info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pagination-btns {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pagination-btn {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  min-width: 36px;
  text-align: center;
}

.pagination-btn:hover:not(:disabled):not(.active) {
  border-color: var(--color-accent-light);
  background: var(--color-surface-alt);
}

.pagination-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* --- Confirm Modal --- */
.confirm-modal-icon {
  font-size: 3rem;
  text-align: center;
  margin-bottom: var(--space-3);
}

.confirm-modal-message {
  font-size: var(--font-size-base);
  line-height: 1.7;
  text-align: center;
  margin-bottom: var(--space-5);
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-error);
  color: #fff;
  border: none;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-danger:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* --- Empty/No Results --- */
.works-empty {
  text-align: center;
  padding: var(--space-10) var(--space-4);
}

/* --- Dark Theme Overrides --- */
[data-theme="dark"] .works-manage-toolbar {
  background: var(--color-surface);
  border-color: var(--color-border);
}

[data-theme="dark"] .works-card:hover {
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

[data-theme="dark"] .works-card.selected {
  box-shadow: 0 0 0 1px var(--color-accent-light);
}

[data-theme="dark"] .works-checkbox {
  background: var(--color-surface-alt);
}

[data-theme="dark"] .works-manage-batch-actions {
  background: rgba(129, 140, 248, 0.12);
}

[data-theme="dark"] .pagination-btn:hover:not(:disabled):not(.active) {
  background: rgba(255,255,255,0.05);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .works-manage-toolbar {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3);
  }

  .works-manage-actions {
    justify-content: flex-start;
  }

  .works-manage-search .search-input {
    width: 140px;
  }

  .works-manage-search .search-input:focus {
    width: 180px;
  }

  .works-card {
    flex-direction: column;
  }

  .works-card-check {
    padding: 8px 12px 0;
  }

  .works-card-actions {
    flex-direction: row;
    border-left: none;
    border-top: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-3);
  }

  .works-card-actions .btn {
    width: auto;
    font-size: var(--font-size-xs);
    padding: 4px 8px;
  }

  .works-pagination {
    justify-content: center;
  }

  .pagination-info {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .works-manage-filters {
    width: 100%;
  }

  .works-manage-filters .filter-chip {
    font-size: 0.7rem;
    padding: 4px 10px;
  }

  .works-manage-search .search-input {
    width: 120px;
  }

  .works-card-header {
    flex-wrap: wrap;
  }

  .works-card-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 精选位置设置模态框按钮（站内风格，替代原生 prompt） */
.my-featured-pos-btn {
  min-width: 72px;
  padding: var(--space-3) var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.15s ease;
}
.my-featured-pos-btn:hover:not(:disabled) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.my-featured-pos-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}


/* ============================================================
 * 二期 M5b·知识图谱筛选 UI（KG-01/04）
 * 前缀 kg-，与组件内部前缀 kgmm-/kgfg- 分离
 * ============================================================ */
.kg-filter-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
}
.kg-mode-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.kg-mode-btn {
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  padding: 4px 14px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.kg-mode-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.kg-mode-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.kg-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-left: var(--space-2);
}

/* 级联筛选：分组 + 多选标签 */
.kg-cascade-panel { margin-top: var(--space-3); }
.kg-cascade-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-height: 320px;   /* 折叠态下整个知识点窗口不占太高，避免挡项目列表 */
  overflow-y: auto;    /* 展开多个分组后超出可滚动 */
}
.kg-group {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
}
.kg-group-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  user-select: none;
  transition: color .15s;
}
.kg-group-title:hover { color: var(--color-accent); }
.kg-group-title .kg-group-arrow {
  display: inline-block;
  width: 14px;
  text-align: center;
  color: var(--color-text-secondary);
  transition: transform .2s;
}
.kg-group.open .kg-group-title .kg-group-arrow { color: var(--color-accent); }
.kg-group-title .kg-group-name { flex: 1; cursor: pointer; }
/* 0927-5：一级节点全选态高亮（点击名字选/取消自身+所有子节点） */
.kg-group-title .kg-group-name.kg-group-selected { color: var(--color-accent); font-weight: 700; }
.kg-group-title .kg-group-name:hover { color: var(--color-accent); }
.kg-group-title .kg-group-count {
  font-size: 11px;
  font-weight: 400;
  color: var(--color-text-tertiary, #999);
}
.kg-group-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.kg-point-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all .15s;
}
.kg-point-chip:hover { border-color: var(--color-accent); }
.kg-point-chip.selected {
  background: #EAFBF1;
  border-color: #2ECC71;
  color: #1a8a52;
  font-weight: 600;
}
.kg-chip-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
}
.kg-point-chip.selected .kg-chip-count { background: #2ECC71; }

/* 0927-6：第 3 级及更深层的 chip 容器横排（原先无样式走默认 block 竖排，客户反馈竖排奇怪）。
   自身 chip 与子级容器同行排列，wrap 换行；子级用左边框区分层级替代缩进 */
.kg-chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 6px 0;
  padding: 0;
  border: none;
}
/* 更深层（第 3 级起）：左边框竖线标识层级，水平排列子标签 */
.kg-chip-row .kg-chip-row {
  margin-left: 4px;
  padding-left: 10px;
  border-left: 2px solid var(--color-border);
}

.kg-selection-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: #EFF6FF;
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}
.kg-selection-bar b { color: var(--color-accent); font-weight: 700; }
.kg-clear-btn {
  border: none;
  background: transparent;
  color: var(--color-error);
  cursor: pointer;
  font-size: var(--font-size-xs);
  padding: 2px 8px;
}

/* 图谱视图切换 + 容器 */
.kg-graph-panel { margin-top: var(--space-3); }
.kg-view-toggle {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}
.kg-view-btn {
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  padding: 4px 14px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.kg-view-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.kg-view-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.kg-graph-container {
  width: 100%;
  min-height: 480px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.kg-empty-hint {
  padding: var(--space-8);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* KG-06·项目卡片知识点标签 chip（小型，灰色，可点跳筛选） */
.project-card-kp {
  display: inline-flex;
  align-items: center;
  border: 1px dashed var(--color-border);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border-radius: var(--radius-full);
  padding: 1px 8px;
  font-size: 0.6rem;
  cursor: pointer;
  transition: all .15s;
}
.project-card-kp:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* KG-05·发布/上传表单：知识点树形多选（效果图 image7） */
.kp-tree-selector {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  background: var(--color-surface);
}
.kp-tree-empty {
  display: block;
  padding: var(--space-2);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
}
.kp-tree-group {
  margin-bottom: var(--space-1);
  border-left: 2px solid var(--color-border);
  padding-left: var(--space-2);
}
.kp-tree-group > summary {
  cursor: pointer;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
  padding: 2px 0;
  list-style: none;
}
.kp-tree-group > summary::-webkit-details-marker { display: none; }
.kp-tree-group > summary::before {
  content: '▸';
  display: inline-block;
  margin-right: 4px;
  transition: transform .15s;
  color: var(--color-text-tertiary);
}
.kp-tree-group[open] > summary::before { transform: rotate(90deg); }
.kp-tree-group-count {
  font-size: 10px;
  color: var(--color-text-tertiary);
  background: var(--color-surface-alt);
  border-radius: var(--radius-full);
  padding: 0 6px;
  margin-left: 4px;
}
.kp-tree-items {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  padding: 4px 0 4px 14px;
}
.kp-tree-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  color: var(--color-text);
  cursor: pointer;
}
.kp-tree-item input { margin: 0; cursor: pointer; }
.kp-tree-count {
  margin-top: 4px;
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  font-weight: 600;
}

/* 二期 UI 调整：大文件成分分析报告弹窗 */
.large-file-report { padding: var(--space-3); max-height: 70vh; overflow-y: auto; }
.lf-banner { background: #FEF3C7; color: #92400E; border: 1px solid #FCD34D; border-radius: var(--radius-md); padding: 10px 14px; font-weight: 600; margin-bottom: var(--space-3); }
.lf-section-title { font-weight: 700; margin: var(--space-3) 0 var(--space-2); color: var(--color-text); }
.lf-table { width: 100%; border-collapse: collapse; font-size: var(--font-size-xs); }
.lf-table th, .lf-table td { border: 1px solid var(--color-border); padding: 6px 8px; text-align: left; }
.lf-table th { background: var(--color-surface-alt); }
.lf-table td:nth-child(3), .lf-table td:nth-child(4) { text-align: right; }
.lf-suggestions { margin: 0; padding-left: 20px; }
.lf-suggestions li { margin: 6px 0; line-height: 1.5; }
.lf-tip { margin-top: var(--space-3); padding: 10px 12px; background: var(--color-surface-alt); border-radius: var(--radius-md); font-size: var(--font-size-xs); color: var(--color-text-secondary); line-height: 1.6; }
.lf-tip a { color: var(--color-accent); }

/* ============================================================
   二期·经验升级系统：签到日历 / 升级弹窗 / 成就 toast / 徽章网格 / 头像框
   ============================================================ */

/* ---- 7 天签到：刻度烧杯 ---- */
.checkin-panel-v2 { padding: var(--space-5); }
.ck-stage {
  display: flex; align-items: stretch; gap: var(--space-5);
  margin: var(--space-4) 0 var(--space-3);
}
/* 左侧：7 条刻度列表 */
.ck-ticks {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 6px;
  justify-content: space-between;
}
.ck-tick {
  display: flex; align-items: center; gap: var(--space-2);
  padding: 6px 10px;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  transition: all 0.2s;
}
.ck-tick-mark {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0; transition: all 0.3s;
}
.ck-tick-day {
  font-size: 12px; font-weight: 700; color: var(--color-text-secondary);
  min-width: 26px;
}
.ck-tick-reward {
  margin-left: auto;
  font-size: 11px; font-weight: 600; color: var(--color-text-tertiary);
}
.ck-tick.lit {
  background: linear-gradient(90deg, #ecfeff, #cffafe);
}
.ck-tick.lit .ck-tick-mark {
  background: #22d3ee;
  box-shadow: 0 0 8px rgba(34,211,238,0.7);
}
.ck-tick.lit .ck-tick-day { color: #0e7490; }
.ck-tick.lit .ck-tick-reward { color: #0891b2; }
.ck-tick.today {
  background: #fffbeb;
  border: 1.5px dashed var(--color-warning);
  animation: ck-today-pulse 1.6s ease-in-out infinite;
}
.ck-tick.today .ck-tick-mark {
  background: var(--color-warning);
  animation: ck-today-pulse 1.6s ease-in-out infinite;
}
.ck-tick.today .ck-tick-day { color: var(--color-warning); }
@keyframes ck-today-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245,158,11,0.35); }
  50% { box-shadow: 0 0 0 5px rgba(245,158,11,0.1); }
}
.ck-tick.big .ck-tick-reward { color: #b45309; font-weight: 700; }
.ck-tick.big.lit {
  background: linear-gradient(90deg, #fef3c7, #fde68a);
}
.ck-tick.big.lit .ck-tick-mark {
  background: #f59e0b;
  box-shadow: 0 0 10px rgba(245,158,11,0.8);
}
.ck-tick.big.lit .ck-tick-day,
.ck-tick.big.lit .ck-tick-reward { color: #92400e; }
.ck-tick.burst { animation: ck-burst 0.7s ease-out; }
@keyframes ck-burst {
  0% { transform: scale(1); }
  35% { transform: scale(1.06); background: #cffafe; }
  100% { transform: scale(1); }
}

/* 右侧：刻度烧杯 */
.ck-flask {
  position: relative;
  width: 130px; flex-shrink: 0;
  display: flex; flex-direction: column; align-items: center;
}
.ck-flask-neck {
  width: 30px; height: 18px;
  border: 2px solid var(--color-border);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
  background: transparent;
}
.ck-flask-body {
  position: relative;
  width: 120px; height: 168px;
  border: 2px solid var(--color-border);
  border-radius: 0 0 24px 24px;
  background: linear-gradient(180deg, rgba(241,245,249,0.5), rgba(241,245,249,0.2));
  overflow: hidden;
  box-shadow: inset 3px 0 6px rgba(255,255,255,0.7), inset -3px 0 6px rgba(0,0,0,0.05), 0 4px 12px rgba(0,0,0,0.06);
}
/* 烧杯刻度线（右侧短横） */
.ck-flask-scale {
  position: absolute; top: 0; right: 0; bottom: 0; width: 24px; z-index: 3;
  pointer-events: none;
}
.ck-scale-tick {
  position: absolute; right: 0; width: 14px; height: 2px;
  background: var(--color-text-tertiary); opacity: 0.5;
}
.ck-scale-tick::after {
  content: ''; position: absolute; right: 16px; top: -4px;
  width: 6px; height: 6px; border-radius: 50%;
  border: 1.5px solid var(--color-border); background: var(--color-surface);
}
/* 液面 */
.ck-flask-liquid {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(180deg, #67e8f9, #22d3ee 40%, #0891b2);
  transition: height 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 2px 4px rgba(255,255,255,0.4);
}
.ck-flask-liquid::after { /* 液面高光 */
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: rgba(255,255,255,0.55);
  border-radius: 50%;
  filter: blur(0.5px);
}
.ck-flask-liquid.full {
  background: linear-gradient(180deg, #fde68a, #fbbf24 40%, #d97706);
}
.ck-flask-liquid.drop { animation: ck-drop 0.7s ease-out; }
@keyframes ck-drop {
  0% { filter: brightness(1); }
  30% { filter: brightness(1.5) drop-shadow(0 0 8px #22d3ee); }
  100% { filter: brightness(1); }
}
/* 气泡特效 */
.ck-flask-bubbles { position: absolute; inset: 0; z-index: 1; pointer-events: none; }
.ck-flask-bubbles span {
  position: absolute; bottom: 0;
  background: rgba(255,255,255,0.75); border-radius: 50%;
  opacity: 0;
  animation-name: ck-bubble;
  animation-timing-function: ease-in;
  animation-iteration-count: infinite;
}
@keyframes ck-bubble {
  0% { bottom: 0; opacity: 0; transform: translateX(0) scale(0.5); }
  20% { opacity: 0.85; }
  100% { bottom: 92%; opacity: 0; transform: translateX(6px) scale(1.3); }
}
/* 烧杯数字（当前刻度 / 7） */
.ck-flask-num {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  z-index: 4;
  font-size: 22px; font-weight: 800;
  color: #fff;
  text-shadow: 0 1px 4px rgba(8,145,178,0.6);
  letter-spacing: 0.5px;
}

/* 总结条 */
.checkin-summary {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2);
  font-size: var(--font-size-sm); color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-3); margin-top: var(--space-2);
  background: var(--color-surface-alt); border-radius: var(--radius-md);
}
.checkin-summary b { color: var(--color-accent); font-weight: 700; }
.ck-sum-dot { color: var(--color-text-tertiary); }
.ck-sum-next b { color: #d97706; }

/* ---- 升级仪式弹窗 ---- */
.levelup-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: radial-gradient(circle at 50% 45%, rgba(99,102,241,0.35), rgba(15,23,42,0.85));
  display: none; align-items: center; justify-content: center;
  backdrop-filter: blur(2px);
}
.levelup-overlay.show { display: flex; animation: lu-fade 0.3s ease; }
@keyframes lu-fade { from { opacity: 0; } to { opacity: 1; } }
.levelup-card {
  position: relative;
  width: min(420px, 90vw);
  padding: var(--space-8) var(--space-6) var(--space-6);
  background: linear-gradient(160deg, var(--color-surface), var(--color-surface-alt));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(99,102,241,0.4);
  text-align: center;
  overflow: hidden;
  animation: lu-pop 0.5s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}
@keyframes lu-pop {
  0% { transform: scale(0.6) translateY(20px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}
.levelup-particles { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.lu-particle {
  position: absolute; top: -10%;
  font-size: 1.1rem;
  animation-name: lu-float;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}
@keyframes lu-float {
  0% { transform: translateY(0) rotate(0); opacity: 0; }
  15% { opacity: 1; }
  100% { transform: translateY(460px) rotate(360deg); opacity: 0; }
}
.levelup-badge-row { display: flex; align-items: center; justify-content: center; gap: var(--space-3); margin-bottom: var(--space-2); }
.levelup-badge-old { font-size: 2rem; opacity: 0.45; }
.levelup-arrow { color: var(--color-text-tertiary); }
.levelup-badge-new { font-size: 3.5rem; animation: lu-badge-pop 0.6s cubic-bezier(0.18, 0.89, 0.32, 1.28) 0.15s both; filter: drop-shadow(0 4px 12px var(--color-accent)); }
@keyframes lu-badge-pop {
  0% { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
.levelup-title { font-size: 1.6rem; font-weight: 800; color: var(--color-accent); }
.levelup-level { font-size: 1.1rem; color: var(--color-text-secondary); margin-top: 4px; }
.levelup-name { font-size: 1.3rem; font-weight: 700; margin-top: 6px; }
.levelup-hint { font-size: var(--font-size-xs); color: var(--color-text-tertiary); margin-top: var(--space-3); }
.levelup-unlock {
  margin: var(--space-2) auto 0; max-width: 320px;
  padding: var(--space-2) var(--space-3);
  background: var(--color-accent-bg); border-radius: var(--radius-md);
  font-size: var(--font-size-sm); color: var(--color-accent); font-weight: 600;
}
.levelup-frame-preview { margin: var(--space-3) auto 0; }
.frame-preview-avatar {
  width: 56px; height: 56px; margin: 0 auto;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; background: var(--color-accent-bg);
}
.frame-preview-label { font-size: 11px; color: var(--color-text-tertiary); margin-top: 6px; }
.levelup-actions { display: flex; gap: var(--space-2); justify-content: center; margin-top: var(--space-4); }

/* ---- 头像框（头部 + 个人档案 + 成就页） ---- */
.frame-copper { box-shadow: 0 0 0 3px #cd7f32, 0 0 0 5px rgba(205,127,50,0.3); }
.frame-silver { box-shadow: 0 0 0 3px #c0c0c0, 0 0 0 5px rgba(192,192,192,0.3); }
.frame-gold { box-shadow: 0 0 0 3px #ffd700, 0 0 0 5px rgba(255,215,0,0.35); }
.frame-rainbow { border: 3px solid transparent; background-image: linear-gradient(var(--color-surface-alt), var(--color-surface-alt)), linear-gradient(135deg, #ff6b6b, #feca57, #48dbfb, #1dd1a1); background-origin: border-box; background-clip: padding-box, border-box; }
.frame-cosmic { box-shadow: 0 0 0 3px #1e1b4b, 0 0 0 5px #fbbf24, 0 0 12px rgba(251,191,36,0.5); }
.frame-none { box-shadow: none; }

/* ---- 成就解锁 toast ---- */
.achievement-toast-container {
  position: fixed; top: 70px; right: 20px; z-index: 9998;
  display: flex; flex-direction: column; gap: var(--space-2);
  pointer-events: none;
}
.ach-toast {
  display: flex; align-items: center; gap: var(--space-3);
  min-width: 280px; max-width: 360px;
  padding: var(--space-3) var(--space-4);
  background: linear-gradient(135deg, var(--color-surface), #fffbeb);
  border: 1px solid var(--color-warning);
  border-left: 4px solid var(--color-warning);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(245,158,11,0.25);
  animation: ach-slide-in 0.45s cubic-bezier(0.18, 0.89, 0.32, 1.28);
  pointer-events: auto;
}
.ach-toast.hide { animation: ach-slide-out 0.4s ease forwards; }
@keyframes ach-slide-in {
  0% { transform: translateX(120%); opacity: 0; }
  100% { transform: translateX(0); opacity: 1; }
}
@keyframes ach-slide-out {
  0% { transform: translateX(0); opacity: 1; }
  100% { transform: translateX(120%); opacity: 0; }
}
.ach-toast-icon { font-size: 2rem; line-height: 1; animation: ach-icon-pop 0.5s cubic-bezier(0.18, 0.89, 0.32, 1.4) 0.1s both; }
@keyframes ach-icon-pop {
  0% { transform: scale(0) rotate(-30deg); }
  100% { transform: scale(1) rotate(0); }
}
.ach-toast-title { font-size: 11px; color: var(--color-warning); font-weight: 700; }
.ach-toast-name { font-size: var(--font-size-sm); font-weight: 700; color: var(--color-text); }
.ach-toast-desc { font-size: 11px; color: var(--color-text-secondary); }

/* ---- 成就详情页：等级卡片 + 徽章网格 v2 ---- */
.ach-level-card {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-4);
  background: linear-gradient(135deg, var(--color-accent-bg), #fdf4ff);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}
.ach-level-badge {
  width: 64px; height: 64px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; background: var(--color-surface);
  flex-shrink: 0;
}
.ach-level-right { flex: 1; min-width: 0; }
.ach-level-name { font-weight: 700; font-size: var(--font-size-lg); }
.ach-level-title { font-size: var(--font-size-xs); color: var(--color-text-secondary); font-weight: 400; }
.ach-level-meta { font-size: var(--font-size-xs); color: var(--color-text-secondary); margin-top: 2px; }
.ach-level-meta b { color: var(--color-accent); }
.ach-level-bar { margin-top: var(--space-2); height: 7px; background: var(--color-border); border-radius: var(--radius-full); overflow: hidden; }
.ach-level-fill { height: 100%; background: linear-gradient(90deg, var(--color-accent), #a855f7, #ec4899); border-radius: var(--radius-full); transition: width 0.6s; }
.ach-feats { margin-bottom: var(--space-4); }
.ach-feats-title { font-size: var(--font-size-xs); font-weight: 600; color: var(--color-text-secondary); margin-bottom: var(--space-2); }
.ach-feats-list { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.ach-feat-pill {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; font-size: var(--font-size-xs);
  background: var(--color-surface-alt); border: 1px solid var(--color-border);
  border-radius: var(--radius-full); color: var(--color-text);
}
.ach-section-title { font-weight: 700; margin-bottom: var(--space-3); }
.achievements-grid-v2 {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-3); margin-bottom: var(--space-4);
}
.achievement-item-v2 {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: transform 0.2s, box-shadow 0.2s;
}
.achievement-item-v2.unlocked { border-color: var(--color-success); background: linear-gradient(135deg, #ecfdf5, var(--color-surface-alt)); }
.achievement-item-v2.unlocked:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(16,185,129,0.2); }
.achievement-item-v2.locked { opacity: 0.6; }
.ach-icon-v2 { font-size: 1.8rem; line-height: 1; flex-shrink: 0; }
.achievement-item-v2.locked .ach-icon-v2 { filter: grayscale(1); }
.ach-name-v2 { font-size: var(--font-size-sm); font-weight: 600; }
.ach-desc-v2 { font-size: 11px; color: var(--color-text-secondary); margin-top: 2px; }
.profile-level-badge { display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; padding: 6px; background: var(--color-surface); }

/* ============================================================
 * 三期·审核中心样式（前缀 rc-）+ 版本时间线样式（前缀 vh-）
 * 追加于 2026-10-04，版本号 v20261004rc
 * ============================================================ */

/* ---- 审核中心卡片 ---- */
.rc-count { font-size: var(--font-size-sm); color: var(--color-text-secondary); margin-bottom: var(--space-3); }
.rc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: var(--space-4); }
.rc-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); transition: box-shadow 0.2s, border-color 0.2s; }
.rc-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); border-color: var(--color-accent); }
.rc-card-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.rc-card-name { font-weight: 700; font-size: var(--font-size-md); color: var(--color-text); word-break: break-all; flex: 1; }
.rc-card-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); font-size: var(--font-size-xs); color: var(--color-text-secondary); }
.rc-card-time { font-size: var(--font-size-xs); color: var(--color-text-tertiary); }
.rc-card-opinion { background: var(--color-surface-alt); border-radius: var(--radius-md); padding: var(--space-2) var(--space-3); font-size: var(--font-size-xs); display: flex; flex-direction: column; gap: 4px; }
.rc-opin-tag { display: inline-block; padding: 2px 8px; border-radius: var(--radius-full); font-weight: 600; font-size: 11px; width: fit-content; }
.rc-opin-app { background: rgba(34,197,94,0.15); color: #16a34a; }
.rc-opin-rej { background: rgba(239,68,68,0.15); color: #dc2626; }
.rc-opin-text { color: var(--color-text); word-break: break-all; }
.rc-opin-by { color: var(--color-text-tertiary); font-size: 11px; }
.rc-card-actions { display: flex; gap: var(--space-2); margin-top: var(--space-2); flex-wrap: wrap; }

/* ---- 环节徽标 ---- */
.rc-badge { display: inline-block; padding: 3px 10px; border-radius: var(--radius-full); font-size: 11px; font-weight: 600; white-space: nowrap; }
.rc-badge-pending { background: rgba(100,116,139,0.15); color: #64748b; }
.rc-badge-s1 { background: rgba(59,130,246,0.15); color: #2563eb; }
.rc-badge-s2 { background: rgba(168,85,247,0.15); color: #9333ea; }
.rc-badge-s3 { background: rgba(245,158,11,0.15); color: #d97706; }
.rc-badge-pub { background: rgba(34,197,94,0.15); color: #16a34a; }
.rc-badge-rej { background: rgba(239,68,68,0.15); color: #dc2626; }
.rc-badge-chip { padding: 4px 12px; }

/* ---- 审核操作弹窗 ---- */
.rc-act-modal { padding: var(--space-2); }
.rc-act-hint { color: var(--color-text-secondary); font-size: var(--font-size-sm); margin-bottom: var(--space-3); }
.rc-act-warn { color: #dc2626; }

/* ---- 审核历史时间线 ---- */
.rc-timeline { position: relative; padding-left: 8px; }
.rc-tl-item { position: relative; padding: 0 0 var(--space-4) 20px; border-left: 2px solid var(--color-border); }
.rc-tl-item:last-child { border-left-color: transparent; padding-bottom: 0; }
.rc-tl-dot { position: absolute; left: -7px; top: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--color-border); }
.rc-tl-dot.rc-act-app { background: #22c55e; }
.rc-tl-dot.rc-act-rej { background: #ef4444; }
.rc-tl-body { display: flex; flex-direction: column; gap: 4px; }
.rc-tl-head { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.rc-tl-stage { font-weight: 600; font-size: var(--font-size-sm); color: var(--color-text); }
.rc-tl-act { padding: 2px 8px; border-radius: var(--radius-full); font-size: 11px; font-weight: 600; }
.rc-tl-act.rc-act-app { background: rgba(34,197,94,0.15); color: #16a34a; }
.rc-tl-act.rc-act-rej { background: rgba(239,68,68,0.15); color: #dc2626; }
.rc-tl-opin { font-size: var(--font-size-sm); color: var(--color-text); word-break: break-all; }
.rc-tl-by { font-size: 11px; color: var(--color-text-tertiary); }

/* ---- 版本历史时间线（vh- 前缀，作品详情页右侧） ---- */
.vh-empty { color: var(--color-text-tertiary); font-size: var(--font-size-sm); text-align: center; padding: 20px; }
.vh-empty-hint { color: var(--color-text-tertiary); font-size: 11px; text-align: center; padding: 0 12px 16px; }
.vh-item { position: relative; padding: 0 0 var(--space-4) 22px; border-left: 2px solid var(--color-border); margin-left: 6px; }
.vh-item:last-child { border-left-color: transparent; padding-bottom: 0; }
.vh-item.vh-current { border-left-color: #22c55e; }
.vh-dot { position: absolute; left: -6px; top: 2px; width: 10px; height: 10px; border-radius: 50%; background: var(--color-border); border: 2px solid var(--color-surface); }
.vh-dot.vh-dot-current { background: #22c55e; box-shadow: 0 0 0 2px rgba(34,197,94,0.25); }
.vh-body { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.vh-head { display: flex; align-items: center; gap: var(--space-2); flex-wrap: wrap; }
.vh-label { font-weight: 700; font-size: var(--font-size-sm); color: var(--color-accent); }
.vh-cur-tag { background: #22c55e; color: #fff; font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: var(--radius-full); }
.vh-time { font-size: 11px; color: var(--color-text-tertiary); margin-left: auto; }
.vh-workname { font-size: var(--font-size-sm); color: var(--color-text); font-weight: 600; white-space: pre-wrap; overflow-wrap: normal; min-width: 0; }
.vh-author { font-size: 11px; color: var(--color-text-secondary); }
.vh-summary { font-size: var(--font-size-xs); color: var(--color-text-secondary); background: var(--color-surface-alt); border-radius: var(--radius-md); padding: 4px 8px; white-space: pre-wrap; overflow-wrap: normal; min-width: 0; }
.vh-view-btn { width: fit-content; margin-top: 4px; }

/* ---- 版本快照预览弹窗 ---- */
.vh-preview-wrap { display: flex; flex-direction: column; gap: var(--space-2); }
.vh-preview-head { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; padding-bottom: var(--space-2); border-bottom: 1px solid var(--color-border); }
.vh-preview-author { font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.vh-preview-time { font-size: 11px; color: var(--color-text-tertiary); margin-left: auto; }
.vh-preview-iframe { width: 100%; height: 60vh; min-height: 360px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #fff; }