:root {
  /* 背景系统 - 多层渐变营造空间感 */
  --bg-primary: #fafbfc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.98);
  --bg-subtle: linear-gradient(135deg, #f8f9ff 0%, #f5f7fa 50%, #fafbfc 100%);
  
  /* 文字系统 - 精确的对比度层级 */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-muted: #94a3b8;
  --text-disabled: #cbd5e1;
  
  /* 品牌色系统 - 专业的色彩梯度 */
  --accent-50: rgba(99, 102, 241, 0.04);
  --accent-100: rgba(99, 102, 241, 0.08);
  --accent-200: rgba(99, 102, 241, 0.15);
  --accent-300: rgba(99, 102, 241, 0.25);
  --accent-400: rgba(99, 102, 241, 0.4);
  --accent-500: #6366f1;
  --accent-600: #4f46e5;
  --accent-700: #4338ca;
  --accent: var(--accent-500);
  --accent-light: var(--accent-400);
  --accent-dark: var(--accent-600);
  --accent-bg: var(--accent-100);
  --accent-border: var(--accent-200);
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #818cf8 50%, #a78bfa 100%);
  --accent-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #818cf8 100%);
  
  /* 边框系统 - 微妙的分隔 */
  --border: rgba(15, 23, 42, 0.08);
  --border-light: rgba(15, 23, 42, 0.04);
  --border-medium: rgba(15, 23, 42, 0.12);
  
  /* 阴影系统 - 专业的光影层次 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05), 0 2px 6px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.07), 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.09), 0 8px 20px rgba(0, 0, 0, 0.05);
  --shadow-2xl: 0 32px 64px rgba(0, 0, 0, 0.12), 0 12px 32px rgba(0, 0, 0, 0.08);
  --shadow-accent: 0 8px 24px rgba(99, 102, 241, 0.25), 0 4px 12px rgba(99, 102, 241, 0.15);
  --shadow-accent-hover: 0 12px 32px rgba(99, 102, 241, 0.35), 0 6px 16px rgba(99, 102, 241, 0.2);
  --shadow-inner: inset 0 1px 3px rgba(0, 0, 0, 0.04);
  
  /* 状态色系统 */
  --success-50: rgba(16, 185, 129, 0.08);
  --success-500: #10b981;
  --success: var(--success-500);
  --warning-50: rgba(245, 158, 11, 0.08);
  --warning-500: #f59e0b;
  --warning: var(--warning-500);
  --danger-50: rgba(239, 68, 68, 0.08);
  --danger-500: #ef4444;
  --danger: var(--danger-500);
  
  /* 圆角系统 - 精确的曲率 */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius: var(--radius-md);
  
  /* 玻璃态系统 */
  --glass: rgba(255, 255, 255, 0.85);
  --glass-heavy: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  
  /* 动画系统 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;background:var(--bg-primary);color:var(--text-primary);font-family:'Inter','PingFang SC','Microsoft YaHei',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:14px;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--accent);text-decoration:none;transition:all var(--duration-fast) var(--ease-out)}
a:hover{color:var(--accent-dark)}
input,select,textarea{background:#ffffff;border:1.5px solid var(--border);color:var(--text-primary);border-radius:var(--radius-sm);padding:12px 16px;width:100%;font-size:14px;outline:none;transition:all var(--duration-normal) var(--ease-out)}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg),var(--shadow-sm);transform:translateY(-1px)}
input::placeholder,textarea::placeholder{color:var(--text-disabled)}
select option{background:#fff}
button{cursor:pointer;border:none;outline:none;font-family:inherit;transition:all var(--duration-normal) var(--ease-out)}

/* ===== SPLASH ===== */
.splash-page{position:fixed;inset:0;background:linear-gradient(135deg, #667eea 0%, #764ba2 100%);display:flex;align-items:center;justify-content:center;z-index:9999;flex-direction:column;gap:18px}
.splash-page::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");animation:patternMove 20s linear infinite}
.splash-page::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 20% 50%,rgba(255,255,255,0.1) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(255,255,255,0.08) 0%,transparent 50%)}
.splash-logo{font-size:80px;animation:splashPulse 2.5s var(--ease-in-out) infinite;filter:drop-shadow(0 8px 24px rgba(0,0,0,0.2));position:relative;z-index:1}
.splash-page h1{font-size:32px;color:#ffffff;letter-spacing:4px;font-weight:800;text-shadow:0 4px 16px rgba(0,0,0,0.25);position:relative;z-index:1}
.splash-page p{color:rgba(255,255,255,0.92);font-size:16px;position:relative;z-index:1}
.splash-schools{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:16px;position:relative;z-index:1}
.splash-schools span{background:rgba(255,255,255,0.15);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,0.25);color:#fff;padding:8px 16px;border-radius:24px;font-size:13px;box-shadow:0 4px 12px rgba(0,0,0,0.1);transition:all var(--duration-normal) var(--ease-out)}
.splash-schools span:hover{background:rgba(255,255,255,0.25);transform:translateY(-2px)}
.splash-bar{width:240px;height:5px;background:rgba(255,255,255,0.2);border-radius:3px;overflow:hidden;margin-top:24px;box-shadow:0 2px 8px rgba(0,0,0,0.15),inset 0 1px 2px rgba(0,0,0,0.1);position:relative;z-index:1}
.splash-bar-inner{height:100%;background:linear-gradient(90deg, #fff 0%, #f0f0f0 50%, #fff 100%);background-size:200% 100%;border-radius:3px;animation:loading 2s var(--ease-out) forwards,shimmerBar 1.5s linear infinite}
@keyframes loading{from{width:0}to{width:100%}}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.05);opacity:0.9}}
@keyframes splashPulse{0%,100%{transform:scale(1);filter:drop-shadow(0 8px 24px rgba(0,0,0,0.2))}50%{transform:scale(1.08);filter:drop-shadow(0 12px 32px rgba(0,0,0,0.3))}}
@keyframes patternMove{0%{transform:translate(0,0)}100%{transform:translate(60px,60px)}}
@keyframes shimmerBar{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ===== LOGIN ===== */
.login-page{position:fixed;inset:0;background:linear-gradient(135deg, #667eea 0%, #764ba2 100%);display:flex;align-items:center;justify-content:center;z-index:999}
.login-page::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");animation:patternMove 25s linear infinite}
.login-page::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 40%,rgba(255,255,255,0.08) 0%,transparent 50%),radial-gradient(circle at 70% 70%,rgba(255,255,255,0.06) 0%,transparent 50%)}
.login-box{background:rgba(255,255,255,0.98);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid rgba(255,255,255,0.6);border-radius:var(--radius-xl);padding:40px 36px;width:420px;max-width:92vw;position:relative;box-shadow:0 24px 72px rgba(0,0,0,0.18),0 0 0 1px rgba(255,255,255,0.15);z-index:1;animation:modalSlideIn 0.5s var(--ease-out)}
.login-logo{text-align:center;margin-bottom:32px}
.login-logo .logo-icon{font-size:52px;filter:drop-shadow(0 4px 12px rgba(99,102,241,0.25));animation:float 3s var(--ease-in-out) infinite}
.login-logo h1{font-size:24px;background:linear-gradient(135deg, #667eea 0%, #764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:12px 0 8px;letter-spacing:1px;font-weight:800}
.login-logo p{color:var(--text-secondary);font-size:15px}
.login-error{background:var(--danger-50);border:1.5px solid rgba(239,68,68,0.2);color:var(--danger);padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:13px;animation:shake 0.4s var(--ease-out)}
.form-group{margin-bottom:18px}
.form-group label{display:block;color:var(--text-secondary);font-size:13px;margin-bottom:8px;font-weight:600;letter-spacing:0.3px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.login-hint{margin-top:20px;text-align:center;color:var(--text-muted);font-size:12px;display:flex;flex-direction:column;gap:8px}
@keyframes modalSlideIn{from{opacity:0;transform:translateY(20px) scale(0.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}

/* ===== MAIN APP ===== */
.main-app{position:fixed;inset:0;display:flex;flex-direction:column;background:var(--bg-primary)}
.app-body{flex:1;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding-bottom:60px;position:relative}
.app-body::-webkit-scrollbar{width:4px}
.app-body::-webkit-scrollbar-track{background:transparent}
.app-body::-webkit-scrollbar-thumb{background:#dee2e6;border-radius:2px}

/* ===== BOTTOM NAV ===== */
.bottom-nav{height:64px;background:var(--glass-heavy);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-top:1px solid var(--border-light);display:flex;align-items:stretch;flex-shrink:0;position:relative;box-shadow:0 -4px 24px rgba(0,0,0,0.04)}
.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--text-muted);transition:all var(--duration-normal) var(--ease-out);position:relative;-webkit-tap-highlight-color:transparent;touch-action:manipulation;user-select:none}
.nav-item:active{transform:scale(0.9);opacity:0.8}
.nav-item.active{color:var(--accent)}
.nav-item.active::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:32px;height:3px;background:var(--accent-gradient);border-radius:0 0 3px 3px;animation:indicatorSlide 0.3s var(--ease-out)}
.nav-item:hover{color:var(--accent-light)}
.nav-icon{font-size:22px;line-height:1;transition:all var(--duration-normal) var(--ease-spring)}
.nav-item:hover .nav-icon{transform:scale(1.15) translateY(-2px)}
.nav-item.active .nav-icon{animation:floatBounce 2s var(--ease-in-out) infinite;filter:drop-shadow(0 2px 8px var(--accent-border))}
.nav-label{font-size:11px;font-weight:500;transition:all var(--duration-normal) var(--ease-out);letter-spacing:0.2px}
@keyframes indicatorSlide{from{opacity:0;width:0}to{opacity:1;width:32px}}
@keyframes floatBounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}

/* ===== PAGE ===== */
.page{display:none;min-height:100%}
.page.active{display:block}
.page.page-enter{animation:pageFadeIn 280ms ease-out forwards}
.page.page-exit{animation:pageFadeOut 200ms ease-in forwards}
.page.slide-in-right{animation:slideInRight 300ms ease-out forwards}
.page.slide-out-left{animation:slideOutLeft 250ms ease-in forwards}
.page.slide-in-left{animation:slideInLeft 300ms ease-out forwards}
.page.slide-out-right{animation:slideOutRight 250ms ease-in forwards}
.page-topbar{display:flex;align-items:center;justify-content:space-between;padding:16px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}
.page-topbar-title{font-size:16px;font-weight:600;color:var(--text-primary)}
.icon-btn{background:#f1f3f5;border:1px solid var(--border);color:var(--accent);width:32px;height:32px;border-radius:8px;font-size:18px;display:flex;align-items:center;justify-content:center;transition:.2s}
.icon-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ===== HOME PAGE - BIG DATA ===== */
.home-hero{position:relative;padding:40px 16px 32px;background:linear-gradient(180deg, #ffffff 0%, #f8f9ff 60%, var(--bg-primary) 100%);overflow:hidden;text-align:center}
.home-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 0%,rgba(99,102,241,0.06) 0%,transparent 70%);animation:pulseGlow 4s var(--ease-in-out) infinite}
.home-hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent 0%,var(--border-light) 50%,transparent 100%)}
.home-hero-content{position:relative;z-index:1}
.home-hero-icon{font-size:64px;margin-bottom:12px;animation:floatDeluxe 3s var(--ease-in-out) infinite;filter:drop-shadow(0 8px 24px rgba(99,102,241,0.25))}
.home-hero h1{font-size:28px;font-weight:900;background:linear-gradient(135deg, #667eea 0%, #764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:2px;margin-bottom:10px;line-height:1.2}
.home-hero p{color:var(--text-secondary);font-size:15px;letter-spacing:0.5px}
@keyframes float{0%,100%{transform:translateY(0px)}50%{transform:translateY(-10px)}}
@keyframes floatDeluxe{0%,100%{transform:translateY(0) rotate(0deg);filter:drop-shadow(0 8px 24px rgba(99,102,241,0.25))}50%{transform:translateY(-12px) rotate(2deg);filter:drop-shadow(0 16px 32px rgba(99,102,241,0.35))}}
@keyframes pulseGlow{0%,100%{opacity:0.6;transform:scale(1)}50%{opacity:1;transform:scale(1.05)}}
.home-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border-light);margin:0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.stat-card{background:#fff;padding:20px 12px;text-align:center;position:relative;overflow:hidden;transition:all var(--duration-normal) var(--ease-out);cursor:pointer}
.stat-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,var(--accent-50) 0%,transparent 100%);opacity:0;transition:opacity var(--duration-normal) var(--ease-out)}
.stat-card:hover::before{opacity:1}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat-num{font-size:28px;font-weight:900;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-variant-numeric:tabular-nums;line-height:1.2;transition:all var(--duration-normal) var(--ease-spring);position:relative;z-index:1}
.stat-card:hover .stat-num{transform:scale(1.1);filter:drop-shadow(0 2px 8px var(--accent-border))}
.stat-label{font-size:11px;color:var(--text-muted);margin-top:8px;transition:all var(--duration-normal) var(--ease-out);position:relative;z-index:1;letter-spacing:0.3px;text-transform:uppercase}
.stat-card:hover .stat-label{color:var(--text-secondary)}
.section-header{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 8px}
.section-title{font-size:14px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:8px}
.section-title::before{content:'';width:3px;height:14px;background:var(--accent);border-radius:2px}
.section-more{font-size:12px;color:var(--text-muted)}

/* Chart */
.chart-wrap{padding:0 16px 16px;background:var(--bg-primary)}
.chart-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;position:relative;box-shadow:var(--shadow-sm);transition:all 0.3s ease}
.chart-box:hover{box-shadow:var(--shadow-md)}
.chart-title{font-size:13px;color:var(--text-secondary);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.chart-title::before{content:'';width:3px;height:14px;background:var(--accent);border-radius:2px}
#schoolChart{width:100%!important;height:220px!important}

/* Schools grid - Photo Cards */
.schools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:0 16px 16px}
.school-card{
  background:#fff;
  border:1px solid var(--border-light);
  border-radius:var(--radius);
  overflow:hidden;
  transition:all 0.3s ease;
  cursor:pointer;
  position:relative;
  box-shadow:var(--shadow-sm);
  aspect-ratio: 4/3;
}
.school-card::before{
  content:'';
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:2;
  transition:height 0.3s ease
}
.school-card:nth-child(1)::before{background:linear-gradient(90deg,#1a6fc4,#2d8ff0)}
.school-card:nth-child(2)::before{background:linear-gradient(90deg,#7c3aed,#9d5cfa)}
.school-card:nth-child(3)::before{background:linear-gradient(90deg,#059669,#0fc488)}
.school-card:nth-child(4)::before{background:linear-gradient(90deg,#d97706,#f59e0b)}
.school-card:nth-child(5)::before{background:linear-gradient(90deg,#dc2626,#f87171)}
.school-card:nth-child(6)::before{background:linear-gradient(90deg,#0891b2,#22d3ee)}
.school-card:hover{
  border-color:var(--accent);
  transform:translateY(-6px) scale(1.03);
  box-shadow:var(--shadow-lg)
}
.school-card:hover::before{height:4px}

/* School Card Image */
.school-card-image{
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background-size:cover;
  background-position:center;
  transition:transform 0.3s ease
}
.school-card:hover .school-card-image{
  transform:scale(1.1)
}
.school-card-overlay{
  position:absolute;
  top:0;
  left:0;
  right:0;
  bottom:0;
  background:linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.6) 100%);
  transition:background 0.3s ease
}
.school-card:hover .school-card-overlay{
  background:linear-gradient(to bottom, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.7) 100%)
}

/* School Card Content */
.school-card-content{
  position:absolute;
  bottom:0;
  left:0;
  right:0;
  padding:12px;
  z-index:1;
  color:#fff
}
.school-card-name{
  font-size:14px;
  font-weight:700;
  text-shadow:0 2px 4px rgba(0,0,0,0.3);
  margin-bottom:4px;
  transition:transform 0.3s ease
}
.school-card:hover .school-card-name{
  transform:translateY(-2px)
}
.school-card-count{
  font-size:12px;
  opacity:0.9;
  text-shadow:0 1px 2px rgba(0,0,0,0.3);
  transition:opacity 0.3s ease
}
.school-card:hover .school-card-count{
  opacity:1
}

/* Feed */
.feed-list{padding:0 16px 16px;display:flex;flex-direction:column;gap:10px}
.feed-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;display:flex;gap:10px;transition:all 0.3s ease}
.feed-item:hover{box-shadow:var(--shadow-md);transform:translateX(4px)}
.feed-avatar{width:36px;height:36px;border-radius:50%;background:#f1f3f5;flex-shrink:0;overflow:hidden;border:2px solid var(--border);transition:all 0.3s ease}
.feed-item:hover .feed-avatar{border-color:var(--accent)}
.feed-avatar img{width:100%;height:100%;object-fit:cover}
.feed-avatar-text{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:var(--accent)}
.feed-body{flex:1;min-width:0}
.feed-meta{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.feed-name{font-size:13px;font-weight:600;color:var(--text-primary)}
.feed-school{font-size:11px;color:var(--text-muted);background:#f1f3f5;padding:1px 6px;border-radius:10px}
.feed-time{font-size:11px;color:var(--text-muted);margin-left:auto}
.feed-content{font-size:13px;color:var(--text-secondary);line-height:1.6}
.feed-img{margin-top:8px;border-radius:8px;max-width:100%;max-height:200px;object-fit:cover}

/* ===== ALUMNI PAGE ===== */
.filter-cascade{padding:12px 16px;background:#fff;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:8px}
.filter-row{display:flex;gap:6px;flex-wrap:wrap}
.filter-chip{background:#f1f3f5;border:1px solid var(--border);color:var(--text-secondary);padding:5px 12px;border-radius:20px;font-size:12px;cursor:pointer;transition:.2s;white-space:nowrap}
.filter-chip.active{background:var(--accent-bg);border-color:var(--accent);color:var(--accent)}
.filter-chip:hover{border-color:var(--accent-light)}
.filter-label{font-size:11px;color:var(--text-muted);margin-bottom:2px}
.search-row{padding:10px 16px;background:#fff}
.search-row input{background:#f1f3f5;border-color:var(--border)}
.alumni-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:12px 16px}
.alumni-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;cursor:pointer;transition:all 0.3s ease;position:relative;overflow:hidden}
.alumni-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:0;background:var(--accent);transition:height 0.3s ease}
.alumni-card:hover::before{height:100%}
.alumni-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md);transform:translateY(-4px)}
.alumni-card-top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.alumni-avatar{width:44px;height:44px;border-radius:50%;background:#f1f3f5;flex-shrink:0;overflow:hidden;border:2px solid var(--border);transition:all 0.3s ease}
.alumni-card:hover .alumni-avatar{border-color:var(--accent)}
.alumni-avatar img{width:100%;height:100%;object-fit:cover}
.alumni-avatar-text{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--accent)}
.alumni-name{font-size:14px;font-weight:600;color:var(--text-primary)}
.alumni-job{font-size:11px;color:var(--text-muted);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.alumni-tags{display:flex;flex-wrap:wrap;gap:4px}
.alumni-tag{font-size:10px;padding:2px 7px;border-radius:10px;background:#f1f3f5;color:var(--text-muted);border:1px solid var(--border)}
.alumni-tag.school{color:var(--accent);border-color:var(--accent-border);background:var(--accent-bg)}
.alumni-tag.city{color:#059669;border-color:rgba(5,150,105,0.2);background:rgba(5,150,105,0.08)}
.alumni-pending-badge{position:absolute;top:8px;right:8px;font-size:10px;padding:2px 6px;border-radius:10px;background:rgba(245,158,11,0.1);color:var(--warning);border:1px solid rgba(245,158,11,0.2)}

/* ===== RESOURCE PAGE ===== */
.tab-bar{display:flex;gap:0;padding:0 16px;background:#fff;border-bottom:1px solid var(--border);overflow-x:auto}
.tab-bar::-webkit-scrollbar{display:none}
.tab-btn{background:none;color:var(--text-muted);padding:12px 14px;font-size:13px;border-bottom:2px solid transparent;transition:.2s;white-space:nowrap}
.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}
.tab-btn:hover{color:var(--text-secondary)}
.resource-list{padding:12px 16px;display:flex;flex-direction:column;gap:10px}
.resource-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;transition:all 0.3s ease;position:relative;overflow:hidden}
.resource-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent);opacity:0;transition:opacity 0.3s ease}
.resource-card:hover::before{opacity:1}
.resource-card:hover{box-shadow:var(--shadow-md);transform:translateX(4px)}
.resource-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:8px}
.resource-type-badge{padding:3px 8px;border-radius:6px;font-size:11px;font-weight:600;flex-shrink:0}
.type-job{background:rgba(99,102,241,0.1);color:var(--accent);border:1px solid rgba(99,102,241,0.2)}
.type-project{background:rgba(5,150,105,0.1);color:#059669;border:1px solid rgba(5,150,105,0.2)}
.type-invest{background:rgba(245,158,11,0.1);color:var(--warning);border:1px solid rgba(245,158,11,0.2)}
.type-other{background:#f1f3f5;color:var(--text-secondary);border:1px solid var(--border)}
.resource-title{font-size:14px;font-weight:600;color:var(--text-primary);flex:1}
.resource-desc{font-size:13px;color:var(--text-secondary);line-height:1.6;margin-bottom:8px}
.resource-footer{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted)}
.resource-contact{color:var(--accent);font-size:12px}

/* ===== ACTIVITY PAGE ===== */
.activity-list{padding:12px 16px;display:flex;flex-direction:column;gap:10px}
.activity-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:all 0.3s ease}
.activity-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.activity-status-bar{height:4px;transition:height 0.3s ease}
.activity-card:hover .activity-status-bar{height:6px}
.status-upcoming{background:linear-gradient(90deg,var(--accent),var(--accent-light))}
.status-ongoing{background:linear-gradient(90deg,#059669,#0fc488)}
.status-ended{background:#dee2e6}
.activity-body{padding:14px}
.activity-name{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:8px}
.activity-info{display:flex;flex-direction:column;gap:4px;margin-bottom:10px}
.activity-info-row{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary)}
.activity-info-row span:first-child{color:var(--text-muted);width:14px;text-align:center}
.activity-footer{display:flex;align-items:center;justify-content:space-between}
.activity-status-tag{font-size:11px;padding:3px 8px;border-radius:10px}
.tag-upcoming{background:var(--accent-bg);color:var(--accent);border:1px solid var(--accent-border)}
.tag-ongoing{background:rgba(5,150,105,0.1);color:#059669;border:1px solid rgba(5,150,105,0.2)}
.tag-ended{background:#f1f3f5;color:var(--text-muted);border:1px solid var(--border)}
.activity-signup-count{font-size:12px;color:var(--text-muted)}

/* Signup roll */
.signup-roll{padding:12px 16px;background:#fff;border-top:1px solid var(--border)}
.signup-roll-title{font-size:12px;color:var(--text-muted);margin-bottom:8px}
.signup-avatars{display:flex;flex-wrap:wrap;gap:6px}
.signup-avatar-item{display:flex;flex-direction:column;align-items:center;gap:3px;width:44px}
.signup-avatar-img{width:36px;height:36px;border-radius:50%;background:#f1f3f5;overflow:hidden;border:1px solid var(--border)}
.signup-avatar-img img{width:100%;height:100%;object-fit:cover}
.signup-avatar-name{font-size:10px;color:var(--text-muted);text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;width:100%}

/* ===== ME PAGE ===== */
.me-hero{background:#fff;padding:24px 16px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--border)}
.me-avatar{width:64px;height:64px;border-radius:50%;background:#f1f3f5;overflow:hidden;border:2px solid var(--accent);flex-shrink:0}
.me-avatar img{width:100%;height:100%;object-fit:cover}
.me-avatar-text{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;color:var(--accent)}
.me-info{flex:1}
.me-name{font-size:18px;font-weight:700;color:var(--text-primary)}
.me-role{font-size:12px;color:var(--accent);margin-top:2px}
.me-meta{font-size:12px;color:var(--text-muted);margin-top:4px}
.me-tabs{display:flex;background:#fff;border-bottom:1px solid var(--border)}
.me-tab{flex:1;background:none;color:var(--text-muted);padding:12px;font-size:13px;border-bottom:2px solid transparent;transition:.2s}
.me-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.me-panel{padding:16px;display:flex;flex-direction:column;gap:12px}

/* Post compose */
.post-compose{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px;margin:12px 16px;box-shadow:var(--shadow-sm)}
.post-compose-row{display:flex;gap:10px;margin-bottom:10px}
.post-compose-row textarea{background:#f1f3f5;border-color:var(--border);resize:none}
.post-compose-actions{display:flex;justify-content:flex-end;gap:8px;align-items:center}
.post-img-preview{margin-top:8px;border-radius:8px;max-width:100%;max-height:150px;object-fit:cover}

/* Profile form */
.profile-form{padding:16px;margin:12px 16px}
.avatar-upload-row{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.avatar-upload{width:72px;height:72px;border-radius:50%;background:#f1f3f5;border:2px dashed var(--border);cursor:pointer;overflow:hidden;display:flex;align-items:center;justify-content:center;font-size:24px;transition:.2s}
.avatar-upload:hover{border-color:var(--accent)}
.avatar-upload img{width:100%;height:100%;object-fit:cover}

/* Settings */
.settings-list{padding:12px 16px;display:flex;flex-direction:column;gap:8px}
.settings-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:.2s}
.settings-item:hover{box-shadow:var(--shadow-sm)}
.settings-item span:first-child{font-size:18px}
.settings-item span:nth-child(2){flex:1;font-size:14px;color:var(--text-primary)}
.settings-item span:last-child{color:var(--text-muted)}

/* ===== ADMIN PAGE ===== */
.admin-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:12px 16px}
.admin-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;transition:all 0.3s ease;display:flex;flex-direction:column;gap:8px;position:relative;overflow:hidden}
.admin-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent);opacity:0;transition:opacity 0.3s ease}
.admin-card:hover::before{opacity:1}
.admin-card:hover{border-color:var(--accent);transform:translateY(-4px) scale(1.02);box-shadow:var(--shadow-md)}
.admin-card-icon{font-size:28px;transition:transform 0.3s ease}
.admin-card:hover .admin-card-icon{transform:scale(1.2) rotate(10deg)}
.admin-card-label{font-size:13px;color:var(--text-primary);transition:color 0.3s ease}
.admin-card:hover .admin-card-label{color:var(--accent)}
.admin-card-count{font-size:20px;font-weight:700;color:var(--accent);transition:all 0.3s ease}
.admin-card:hover .admin-card-count{transform:scale(1.1)}
.admin-section{padding:0 16px 16px}
.admin-section-title{font-size:13px;color:var(--text-secondary);padding:12px 0 8px;border-bottom:1px solid var(--border);margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th{font-size:11px;color:var(--text-muted);padding:8px;text-align:left;border-bottom:1px solid var(--border)}
.admin-table td{font-size:12px;color:var(--text-secondary);padding:8px;border-bottom:1px solid var(--border)}
.admin-table tr:last-child td{border-bottom:none}
.pending-list{display:flex;flex-direction:column;gap:8px}
.pending-item{background:#fff;border:1px solid rgba(245,158,11,0.3);border-radius:var(--radius);padding:12px;display:flex;align-items:center;gap:10px}
.pending-info{flex:1}
.pending-name{font-size:13px;font-weight:600;color:var(--text-primary)}
.pending-meta{font-size:11px;color:var(--text-muted);margin-top:2px}
.pending-actions{display:flex;gap:6px}

/* ===== MODALS ===== */
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.3);z-index:1000;align-items:flex-end;justify-content:center;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.modal.open{display:flex}
.modal-content{background:#fff;border-radius:16px 16px 0 0;width:100%;max-width:600px;max-height:90vh;display:flex;flex-direction:column;animation:slideUp .3s ease;box-shadow:0 -10px 40px rgba(0,0,0,0.15)}
.modal-content.modal-center{border-radius:16px;margin:auto;max-height:80vh;box-shadow:var(--shadow-lg)}
@keyframes slideUp{from{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}
@keyframes fadeIn{from{opacity:0;transform:scale(0.95)}to{opacity:1;transform:scale(1)}}
.modal-header{padding:16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
.modal-header h3{font-size:16px;font-weight:600;color:var(--text-primary)}
.modal-close{background:#f1f3f5;border:1px solid var(--border);color:var(--text-secondary);width:28px;height:28px;border-radius:50%;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all 0.3s ease}
.modal-close:hover{background:var(--danger);color:white;border-color:var(--danger);transform:rotate(90deg)}
.modal-body{padding:16px;overflow-y:auto;flex:1}
.modal-form{padding:16px;overflow-y:auto;flex:1;display:flex;flex-direction:column;gap:12px}
.modal-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end;flex-shrink:0}

/* Alumni detail */
.detail-hero{display:flex;align-items:center;gap:16px;margin-bottom:16px}
.detail-avatar{width:72px;height:72px;border-radius:50%;background:#f1f3f5;overflow:hidden;border:2px solid var(--accent);flex-shrink:0}
.detail-avatar img{width:100%;height:100%;object-fit:cover}
.detail-avatar-text{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:var(--accent)}
.detail-name{font-size:20px;font-weight:700;color:var(--text-primary)}
.detail-job{font-size:13px;color:var(--text-secondary);margin-top:2px}
.detail-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.detail-info-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px}
.detail-info-item{background:#f1f3f5;border-radius:var(--radius-sm);padding:10px}
.detail-info-label{font-size:11px;color:var(--text-muted);margin-bottom:3px}
.detail-info-value{font-size:13px;color:var(--text-primary)}
.detail-bio{font-size:13px;color:var(--text-secondary);line-height:1.6;margin-bottom:16px;padding:12px;background:#f1f3f5;border-radius:var(--radius-sm)}
.detail-tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:12px}
.detail-tab{flex:1;background:none;color:var(--text-muted);padding:10px;font-size:12px;border-bottom:2px solid transparent;transition:.2s}
.detail-tab.active{color:var(--accent);border-bottom-color:var(--accent)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 22px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:all var(--duration-normal) var(--ease-out);cursor:pointer;border:none;position:relative;overflow:hidden;letter-spacing:0.3px}
.btn::before{content:'';position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,0.3);transform:translate(-50%,-50%);transition:width 0.6s var(--ease-out),height 0.6s var(--ease-out)}
.btn:active::before{width:300px;height:300px}
.btn::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0.1) 0%,transparent 100%);opacity:0;transition:opacity var(--duration-fast) var(--ease-out)}
.btn:hover::after{opacity:1}
.btn-primary{background:var(--accent-gradient);color:#fff;font-weight:700;box-shadow:var(--shadow-accent)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:var(--shadow-accent-hover)}
.btn-primary:active{transform:translateY(-1px)}
.btn-secondary{background:#fff;border:1.5px solid var(--border);color:var(--text-secondary);box-shadow:var(--shadow-xs)}
.btn-secondary:hover{border-color:var(--accent-300);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-danger{background:var(--danger-50);border:1.5px solid rgba(239,68,68,0.2);color:var(--danger)}
.btn-danger:hover{background:rgba(239,68,68,0.12);transform:translateY(-2px);box-shadow:0 4px 12px rgba(239,68,68,0.15)}
.btn-success{background:var(--success-50);border:1.5px solid rgba(16,185,129,0.2);color:var(--success)}
.btn-success:hover{background:rgba(16,185,129,0.12);transform:translateY(-2px);box-shadow:0 4px 12px rgba(16,185,129,0.15)}
.btn-warn{background:var(--warning-50);border:1.5px solid rgba(245,158,11,0.2);color:var(--warning)}
.btn-warn:hover{background:rgba(245,158,11,0.12);transform:translateY(-2px);box-shadow:0 4px 12px rgba(245,158,11,0.15)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-block{width:100%}

/* ===== CARD ===== */
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}

/* ===== ANIMATIONS ===== */

/* 页面切换动画 */
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pageFadeOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-8px); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20%); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideOutLeft {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(-20%); }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-20%); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideOutRight {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(20%); }
}
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.float-anim {
  animation: float 3s ease-in-out infinite;
}
.shimmer {
  background: linear-gradient(90deg, #e9ecef 25%, #f1f3f5 50%, #e9ecef 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== LOAD MORE (触底加载) ===== */
.load-more {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 13px;
}

.load-more-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.load-more.no-more .load-more-spinner {
  display: none;
}

.load-more.no-more .load-more-text::before {
  content: '— ';
}

.load-more.no-more .load-more-text::after {
  content: ' —';
}

/* ===== PULL REFRESH ===== */
.pull-refresh {
  position: absolute;
  top: -60px;
  left: 0;
  right: 0;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-muted);
  font-size: 13px;
  z-index: 10;
  transition: transform 0.3s ease;
  pointer-events: none;
}
.pull-refresh-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  transition: transform 0.2s ease;
}
.pull-refresh.refreshing .pull-refresh-spinner {
  animation: spin 0.8s linear infinite;
}
.pull-refresh.pulling .pull-refresh-spinner {
  transform: rotate(180deg);
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.app-body.pulling {
  overflow: hidden;
}
.app-body.pulling .pull-refresh {
  transform: translateY(60px);
}

/* ===== BADGE ===== */
.badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;border-radius:10px;font-size:11px;font-weight:600}
.badge-blue{background:var(--accent-bg);color:var(--accent)}
.badge-green{background:rgba(34,197,94,0.1);color:var(--success)}
.badge-warn{background:rgba(245,158,11,0.1);color:var(--warning)}
.badge-danger{background:rgba(239,68,68,0.1);color:var(--danger)}

/* ===== TOAST ===== */
.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(20px);background:#fff;border:1px solid var(--border);color:var(--text-primary);padding:10px 20px;border-radius:20px;font-size:13px;opacity:0;transition:.3s;pointer-events:none;z-index:9999;white-space:nowrap;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== EMPTY STATE ===== */
.empty-state{text-align:center;padding:48px 16px;color:var(--text-muted)}
.empty-state-icon{font-size:48px;margin-bottom:12px;opacity:.5}
.empty-state p{font-size:14px}

/* ===== UTILS ===== */
.hidden{display:none!important}
.admin-only{display:none!important}
.admin-only.admin-visible{display:block!important}
.admin-only.admin-inline{display:inline!important}
.admin-only.admin-flex{display:flex!important}
.text-accent{color:var(--accent)}
.text-muted{color:var(--text-muted)}
.mt-8{margin-top:8px}
.mt-12{margin-top:12px}
.flex-center{display:flex;align-items:center;justify-content:center}
.gap-8{gap:8px}

/* ===== SCROLLABLE FILTER ===== */
.filter-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.filter-scroll::-webkit-scrollbar{display:none}
.filter-row{flex-wrap:nowrap}

/* ===== AVATAR URL INPUT ===== */
.avatar-input-group{display:flex;flex-direction:column;gap:6px}
.avatar-input-group .avatar-preview-small{width:40px;height:40px;border-radius:50%;background:#f1f3f5;border:1px solid var(--border);overflow:hidden;flex-shrink:0}
.avatar-input-group .avatar-preview-small img{width:100%;height:100%;object-fit:cover}
.avatar-input-row{display:flex;align-items:center;gap:8px}

/* ===== RESPONSIVE ===== */

/* 移动端字体优化 - 屏幕宽度 <= 768px */
@media (max-width: 768px) {
  /* 基础字体 */
  html, body { font-size: 15px }
  
  /* 输入框字体 - 至少16px避免iOS自动缩放 */
  input, select, textarea { font-size: 16px }
  
  /* 按钮字体 */
  .btn { font-size: 15px }
  .btn-sm { font-size: 13px }
  
  /* 启动页 */
  .splash-page h1 { font-size: 26px }
  .splash-page p { font-size: 15px }
  .splash-schools span { font-size: 13px }
  
  /* 登录页 */
  .login-logo h1 { font-size: 22px }
  .login-logo p { font-size: 14px }
  .login-error { font-size: 14px }
  .login-hint { font-size: 13px }
  .form-group label { font-size: 13px }
  
  /* 首页标题区域 */
  .home-hero h1 { font-size: 26px }
  .home-hero p { font-size: 14px }
  .stat-num { font-size: 26px }
  .stat-label { font-size: 12px }
  .section-title { font-size: 15px }
  .section-more { font-size: 13px }
  .chart-title { font-size: 14px }
  
  /* 学校卡片 */
  .school-card-name { font-size: 14px }
  .school-card-count { font-size: 12px }
  
  /* 动态列表 */
  .feed-name { font-size: 14px }
  .feed-school { font-size: 12px }
  .feed-time { font-size: 12px }
  .feed-content { font-size: 14px }
  .feed-avatar-text { font-size: 15px }
  
  /* 底部导航 */
  .nav-label { font-size: 12px }
  
  /* 页面标题栏 */
  .page-topbar-title { font-size: 17px }
  
  /* 校友页面 */
  .filter-chip { font-size: 13px }
  .filter-label { font-size: 12px }
  .alumni-name { font-size: 15px }
  .alumni-job { font-size: 12px }
  .alumni-tag { font-size: 11px }
  .alumni-avatar-text { font-size: 17px }
  
  /* 资源页面 */
  .tab-btn { font-size: 14px }
  .resource-title { font-size: 15px }
  .resource-desc { font-size: 14px }
  .resource-footer { font-size: 13px }
  .resource-contact { font-size: 13px }
  .resource-type-badge { font-size: 12px }
  
  /* 活动页面 */
  .activity-name { font-size: 16px }
  .activity-info-row { font-size: 13px }
  .activity-status-tag { font-size: 12px }
  .activity-signup-count { font-size: 13px }
  .signup-roll-title { font-size: 13px }
  .signup-avatar-name { font-size: 11px }
  
  /* 我的页面 */
  .me-name { font-size: 20px }
  .me-role { font-size: 13px }
  .me-meta { font-size: 13px }
  .me-tab { font-size: 14px }
  .me-avatar-text { font-size: 26px }
  .settings-item span:nth-child(2) { font-size: 15px }
  
  /* 管理页面 */
  .admin-card-label { font-size: 14px }
  .admin-card-count { font-size: 22px }
  .admin-section-title { font-size: 14px }
  .admin-table th { font-size: 12px }
  .admin-table td { font-size: 13px }
  .pending-name { font-size: 14px }
  .pending-meta { font-size: 12px }
  
  /* 模态框 */
  .modal-header h3 { font-size: 17px }
  .detail-name { font-size: 22px }
  .detail-job { font-size: 14px }
  .detail-info-label { font-size: 12px }
  .detail-info-value { font-size: 14px }
  .detail-bio { font-size: 14px }
  .detail-tab { font-size: 13px }
  
  /* Badge */
  .badge { font-size: 12px }
  
  /* Toast */
  .toast { font-size: 14px }
  
  /* 空状态 */
  .empty-state p { font-size: 15px }
}

@media(min-width:480px){
  .alumni-grid{grid-template-columns:repeat(3,1fr)}
  .schools-grid{grid-template-columns:repeat(3,1fr)}
}
@media(min-width:600px){
  .home-stats-grid{grid-template-columns:repeat(4,1fr)}
}

/* ===== 骨架屏 ===== */
.skeleton {
  padding: 15px;
}

.skeleton-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
  overflow: hidden;
}

.skeleton-line {
  height: 14px;
  background: linear-gradient(90deg, #e9ecef 25%, #f1f3f5 50%, #e9ecef 75%);
  background-size: 200% 100%;
  animation: shimmerSkeleton 1.5s infinite;
  border-radius: 6px;
  margin-bottom: 10px;
}

.skeleton-line.w60 { width: 60%; }
.skeleton-line.w80 { width: 80%; }
.skeleton-line.w40 { width: 40%; }
.skeleton-line.w100 { width: 100%; }
.skeleton-line.h20 { height: 20px; }
.skeleton-line.h12 { height: 12px; }

.skeleton-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(90deg, #e9ecef 25%, #f1f3f5 50%, #e9ecef 75%);
  background-size: 200% 100%;
  animation: shimmerSkeleton 1.5s infinite;
  flex-shrink: 0;
}

.skeleton-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

@keyframes shimmerSkeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* 重试按钮 */
.retry-wrap {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.retry-btn {
  display: inline-block;
  margin-top: 12px;
  padding: 8px 24px;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: 20px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.retry-btn:active {
  transform: scale(0.95);
  background: rgba(99,102,241,0.15);
}

/* Quill编辑器样式 */
.ql-container {
  border-radius: 0 0 8px 8px !important;
  font-size: 14px;
}
.ql-toolbar {
  border-radius: 8px 8px 0 0 !important;
  background: var(--bg-primary);
}
.ql-editor {
  min-height: 120px;
  max-height: 400px;
  overflow-y: auto;
}
.ql-editor img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 8px 0;
}
.ql-video {
  width: 100%;
  height: 300px;
  border-radius: 8px;
  margin: 8px 0;
  background: #000;
}

/* 模态框表单中的编辑器容器 */
.modal-form #resEditor,
.modal-form #actEditor {
  border: 1px solid var(--border) !important;
}

/* 小按钮 */
.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}