/* ===== Reset & Custom Properties ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:        #09090b;
  --bg-surface:#131317;
  --bg-card:   #1a1a20;
  --bg-hover:  #22222a;
  --border:    #262630;
  --border-light:#2e2e38;
  --pri:       #38bdf8;
  --pri-hover: #0ea5e9;
  --pri-dim:   rgba(56,189,248,.12);
  --acc:       #fbbf24;
  --acc-hover: #f59e0b;
  --acc-dim:   rgba(251,191,36,.12);
  --red:       #f87171;
  --red-hover: #ef4444;
  --green:     #4ade80;
  --text:      #e4e4e7;
  --text-sec:  #a1a1aa;
  --text-mute: #707078;
  --text-dim:  #52525b;
  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 14px;
  --shadow:    0 1px 3px rgba(0,0,0,.4);
  --shadow-lg: 0 4px 16px rgba(0,0,0,.5);
}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{
  font-family: -apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--bg);color:var(--text-sec);line-height:1.7;
  min-height:100vh;display:flex;flex-direction:column;
}
#particleCanvas{position:fixed;inset:0;z-index:0;pointer-events:none}
a{color:var(--pri);text-decoration:none;transition:color .15s}
a:hover{color:var(--pri-hover)}
::selection{background:var(--pri-dim);color:var(--pri)}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text-dim)}

/* ===== Navbar ===== */
.navbar{
  background:rgba(9,9,11,.88);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  padding:0 28px;height:60px;
  display:flex;align-items:center;
  position:sticky;top:0;z-index:200;
  transition:height .25s;
}
.navbar.scrolled{height:50px;background:rgba(9,9,11,.95)}
.nav-brand{
  display:flex;align-items:center;gap:10px;
  color:var(--text);text-decoration:none;
  font-size:17px;font-weight:700;
  margin-right:36px;white-space:nowrap;
}
.nav-brand:hover{opacity:.85;text-decoration:none}
.nav-logo{width:30px;height:30px;border-radius:7px;object-fit:cover}
.nav-toggle{display:none;background:none;border:none;color:var(--text-sec);font-size:22px;cursor:pointer;padding:4px 8px;margin-left:auto}
.nav-menu{display:flex;align-items:center;gap:2px;list-style:none;flex:1}
.nav-menu > li{position:relative}
.nav-menu > li > a{
  color:var(--text-sec);text-decoration:none;
  font-size:13.5px;padding:7px 13px;border-radius:var(--radius-sm);
  display:block;transition:all .15s;white-space:nowrap;
}
.nav-menu > li > a:hover{color:var(--text);background:var(--bg-hover);text-decoration:none}
.nav-dropdown-menu{
  display:none;position:absolute;top:100%;left:0;
  background:var(--bg-card);list-style:none;
  min-width:148px;border-radius:var(--radius);
  border:1px solid var(--border);box-shadow:var(--shadow-lg);
  overflow:hidden;padding:5px;
}
.nav-dropdown:hover .nav-dropdown-menu{display:block;animation:dropIn .15s ease}
@keyframes dropIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.nav-dropdown-menu li a{
  color:var(--text-sec);text-decoration:none;
  padding:9px 14px;display:block;font-size:13px;
  border-radius:var(--radius-sm);transition:all .12s;
}
.nav-dropdown-menu li a:hover{color:var(--text);background:var(--bg-hover);text-decoration:none}
.nav-user-block{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-user-name{color:var(--text-mute);font-size:13px;white-space:nowrap}
.nav-admin-link{
  color:var(--acc)!important;font-size:12.5px;
  padding:3px 10px;border:1px solid var(--acc);
  border-radius:var(--radius-sm);transition:all .15s;
}
.nav-admin-link:hover{background:var(--acc);color:var(--bg)!important;text-decoration:none}
.nav-logout{color:var(--red)!important;font-size:13px}
.nav-auth{margin-left:auto}
.btn-login{
  background:var(--pri);color:var(--bg)!important;
  padding:7px 22px;border-radius:var(--radius-sm);
  font-size:13.5px;font-weight:600;transition:all .15s;
}
.btn-login:hover{background:var(--pri-hover);text-decoration:none}

/* ===== Container ===== */
.container{max-width:1040px;margin:0 auto;padding:28px 20px;flex:1;width:100%;position:relative;z-index:1}

/* ===== Flash ===== */
.flash-messages{margin-bottom:16px}
.flash{
  background:rgba(74,222,128,.08);border:1px solid rgba(74,222,128,.2);
  color:var(--green);padding:10px 18px;border-radius:var(--radius-sm);
  margin-bottom:8px;font-size:13.5px;
  animation:fadeIn .25s ease
}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* ===== Page Header ===== */
.page-header{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:24px;flex-wrap:wrap;gap:10px;
}
.page-header h1{font-size:24px;color:var(--text);font-weight:700}

/* ===== Section Title ===== */
h2{margin-bottom:14px;color:var(--text);font-size:18px;font-weight:700}
.section-title{
  font-size:16px;font-weight:700;color:var(--text-sec);
  margin-bottom:12px;text-transform:uppercase;letter-spacing:.5px;
}

/* ===== Cards ===== */
.card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:border-color .2s,box-shadow .2s;
}
.card:hover{border-color:var(--border-light);box-shadow:var(--shadow)}
.card-body{padding:22px}

/* ===== Tables ===== */
.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:16px}
.table{
  width:100%;border-collapse:collapse;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden
}
.table th,.table td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--border);white-space:nowrap}
.table th{background:rgba(56,189,248,.06);color:var(--pri);font-weight:600;font-size:12.5px;text-transform:uppercase;letter-spacing:.4px}
.table tr{transition:background .1s}
.table tr:hover{background:var(--bg-hover)}
.table td{color:var(--text-sec);font-size:14px}
.actions{display:flex;gap:6px;flex-wrap:wrap}

/* ===== Forms ===== */
.form-card{max-width:460px;margin:0 auto;background:var(--bg-card);border:1px solid var(--border);padding:32px;border-radius:var(--radius-lg)}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13.5px;font-weight:600;margin-bottom:5px;color:var(--text-sec)}
.form-group input,.form-group textarea,.form-group select{
  width:100%;padding:9px 14px;border:1px solid var(--border);
  border-radius:var(--radius);font-size:14px;
  background:var(--bg-surface);color:var(--text);
  transition:border-color .15s
}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-dim)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{
  outline:none;border-color:var(--pri);box-shadow:0 0 0 3px var(--pri-dim)
}
.form-group input:disabled{background:var(--bg);color:var(--text-dim)}
.form-footer{margin-top:18px;text-align:center;font-size:13.5px;color:var(--text-mute)}
.form-footer a{color:var(--pri)}

/* ===== Buttons ===== */
.btn,.btn-sm{
  display:inline-block;padding:8px 22px;
  background:var(--pri);color:var(--bg);
  border:none;border-radius:var(--radius-sm);
  cursor:pointer;font-size:14px;font-weight:600;
  text-decoration:none;text-align:center;
  transition:all .15s
}
.btn:hover,.btn-sm:hover{background:var(--pri-hover);text-decoration:none;color:var(--bg)}
.btn-sm{padding:5px 14px;font-size:13px}
.btn-danger{background:var(--red)}
.btn-danger:hover{background:var(--red-hover)}
.btn-cancel{background:var(--bg-hover);color:var(--text-sec);border:1px solid var(--border)}
.btn-cancel:hover{background:var(--border-light);color:var(--text)}

/* ===== Badges ===== */
.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11.5px;font-weight:600;background:var(--pri-dim);color:var(--pri)}
.badge-活动{background:rgba(56,189,248,.12);color:var(--pri)}
.badge-会议{background:var(--acc-dim);color:var(--acc)}
.badge-紧急{background:rgba(248,113,113,.12);color:var(--red)}
.badge-其他{background:var(--bg-hover);color:var(--text-mute)}
.level-badge{display:inline-block;padding:2px 9px;border-radius:4px;font-size:11.5px;font-weight:600;margin:4px 0}
.level-校级{background:var(--pri-dim);color:var(--pri)}
.level-省级{background:rgba(74,222,128,.12);color:var(--green)}
.level-国家级{background:var(--acc-dim);color:var(--acc)}
.level-国际级{background:rgba(244,114,182,.12);color:#f472b6}
.text-muted{color:var(--text-mute);font-size:13px}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--bg-card);border:1px solid var(--border);
  margin-bottom:32px;text-align:center;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%,rgba(56,189,248,.06),transparent),
    radial-gradient(ellipse 40% 60% at 80% 100%,rgba(251,191,36,.03),transparent);
  pointer-events:none
}
.hero-inner{position:relative;z-index:1;padding:64px 32px;max-width:640px;margin:0 auto}
.hero-badge{
  display:inline-block;padding:4px 14px;border-radius:20px;
  background:var(--pri-dim);color:var(--pri);
  font-size:12.5px;font-weight:600;margin-bottom:20px;
  animation:heroIn .5s ease both
}
@keyframes heroIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.hero-title{font-size:38px;font-weight:800;color:var(--text);margin-bottom:12px;line-height:1.3;animation:heroIn .5s ease .1s both}
.hero-sub{font-size:16px;color:var(--text-mute);margin-bottom:24px;animation:heroIn .5s ease .2s both}
.hero-tags{display:flex;gap:8px;margin-bottom:28px;flex-wrap:wrap;justify-content:center;animation:heroIn .5s ease .3s both}
.hero-tags span{
  padding:5px 14px;border:1px solid var(--border-light);border-radius:20px;
  color:var(--text-sec);font-size:12.5px;
  background:var(--bg-surface);transition:all .15s
}
.hero-tags span:hover{border-color:var(--pri);color:var(--pri)}
.hero-cta{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;animation:heroIn .5s ease .4s both}
.btn-hero{padding:10px 28px;font-size:15px;font-weight:700}
.btn-ghost{background:transparent;color:var(--text-sec);border:1px solid var(--border)}
.btn-ghost:hover{background:transparent;border-color:var(--pri);color:var(--pri)}

/* ===== Carousel ===== */
.carousel{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  margin-bottom:32px;aspect-ratio:21/9;background:var(--bg-card);
  border:1px solid var(--border)
}
.carousel-track{display:flex;height:100%;transition:transform .5s cubic-bezier(.4,0,.2,1)}
.carousel-slide{min-width:100%;height:100%;position:relative}
.carousel-slide img{width:100%;height:100%;object-fit:cover;display:block}
.carousel-slide::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(9,9,11,.55),transparent 50%)
}
.carousel-caption{
  position:absolute;bottom:20px;left:20px;
  background:rgba(9,9,11,.75);color:var(--text);
  padding:8px 16px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;z-index:1
}
.carousel-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  background:rgba(9,9,11,.6);color:var(--text);
  border:1px solid var(--border);width:40px;height:40px;
  border-radius:50%;font-size:16px;cursor:pointer;
  transition:all .15s;z-index:1
}
.carousel-btn:hover{background:var(--pri);border-color:var(--pri);color:var(--bg)}
.carousel-prev{left:14px}.carousel-next{right:14px}
.carousel-dots{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:6px;z-index:1}
.carousel-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.3);cursor:pointer;transition:all .2s}
.carousel-dot.active{background:var(--pri);width:24px;border-radius:4px}

/* ===== Feature Strip ===== */
.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:32px}
.feature-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px 16px;
  display:flex;align-items:center;gap:14px;
  transition:all .15s;color:var(--text);
  text-decoration:none
}
.feature-card:hover{border-color:var(--border-light);background:var(--bg-hover);text-decoration:none;transform:translateY(-1px)}
.feature-icon{
  font-size:22px;flex-shrink:0;
  width:42px;height:42px;display:flex;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);background:var(--pri-dim)
}
.feature-info{flex:1;min-width:0}
.feature-name{font-size:14px;font-weight:700;color:var(--text);margin-bottom:1px}
.feature-desc{font-size:12px;color:var(--text-mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ===== Home Grid ===== */
.home-grid{display:grid;grid-template-columns:3fr 2fr;gap:20px;margin-bottom:24px}

/* ===== Notice List ===== */
.notice-list{display:flex;flex-direction:column;gap:6px}
.notice-item{
  display:flex;align-items:center;gap:8px;
  padding:9px 0;border-bottom:1px solid var(--border);
  color:var(--text-sec);font-size:13.5px;text-decoration:none;
  transition:all .12s
}
.notice-item:hover{text-decoration:none;color:var(--pri);padding-left:4px}
.notice-item:last-child{border-bottom:none}
.notice-text{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.notice-date{color:var(--text-mute);font-size:12px;white-space:nowrap}
.pin-icon{font-size:13px}
.notice-cat-badge{padding:1px 7px;border-radius:10px;font-size:11px;font-weight:600;white-space:nowrap}

/* ===== Notice Full List ===== */
.notice-list-full{display:flex;flex-direction:column;gap:10px}
.notice-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px 20px;
  border-left:3px solid var(--pri);transition:all .15s
}
.notice-card:hover{border-color:var(--border-light);box-shadow:var(--shadow)}
.notice-card.pinned{border-left-color:var(--acc)}
.notice-card-title{font-size:15px;font-weight:600;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:6px;transition:color .12s}
.notice-card-title:hover{color:var(--pri);text-decoration:none}
.notice-card-meta{margin-top:6px;display:flex;gap:12px;flex-wrap:wrap;color:var(--text-mute);font-size:12.5px}
.notice-attachment{margin-top:14px;padding:10px 14px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius);font-size:13.5px}

/* ===== Stats Bar ===== */
.stats-bar{
  display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px
}
.stats-item{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:6px 14px;
  font-size:13px;color:var(--text-sec)
}
.stats-item strong{color:var(--pri);margin-left:2px}

/* ===== Cohort Section ===== */
.cohort-section{margin-bottom:24px}
.cohort-title{
  font-size:16px;font-weight:700;color:var(--text);
  margin-bottom:12px;padding-left:12px;
  border-left:3px solid var(--acc)
}

/* ===== Officer Grid ===== */
.officer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(175px,1fr));gap:14px}
.officer-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:22px 16px;
  text-align:center;transition:all .15s
}
.officer-card:hover{border-color:var(--border-light);box-shadow:var(--shadow);transform:translateY(-2px)}
.officer-photo{width:68px;height:68px;border-radius:50%;object-fit:cover;margin:0 auto 12px;display:block;border:2px solid var(--border-light)}
.officer-placeholder{display:flex;align-items:center;justify-content:center;background:var(--bg-surface);color:var(--pri);font-size:26px;font-weight:700;width:68px;height:68px;border-radius:50%;margin:0 auto 12px}
.officer-name{font-size:15px;font-weight:600;color:var(--text)}
.officer-position{font-size:13.5px;color:var(--pri);font-weight:600;margin:2px 0}
.officer-dept{font-size:12.5px;color:var(--text-sec)}
.officer-cohort{font-size:12px;color:var(--text-mute);margin-top:2px}

/* ===== Award Grid ===== */
.award-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.award-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;transition:all .15s
}
.award-card:hover{border-color:var(--border-light);box-shadow:var(--shadow)}
.award-img{width:100%;height:170px;object-fit:cover;display:block;cursor:pointer;transition:opacity .15s}
.award-img:hover{opacity:.9}
.award-img.expanded{
  position:fixed;top:50%;left:50%;
  transform:translate(-50%,-50%);
  max-width:90vw;max-height:90vh;
  width:auto;height:auto;object-fit:contain;
  z-index:10000;cursor:pointer
}
.award-img-placeholder{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-surface),var(--bg-card));color:var(--acc);font-size:44px;height:170px}
.award-body{padding:15px}
.award-title{font-size:14.5px;font-weight:600;color:var(--text);margin-bottom:4px}
.award-winner{font-size:13px;color:var(--text-sec);margin-bottom:4px}
.award-date{font-size:12px;color:var(--text-mute);margin-top:3px}
.award-desc{font-size:13px;color:var(--text-sec);margin-top:5px;line-height:1.6}

/* ===== Album Grid ===== */
.album-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.album-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);overflow:hidden;
  transition:all .15s;color:var(--text);display:block
}
.album-card:hover{border-color:var(--border-light);box-shadow:var(--shadow);text-decoration:none;transform:translateY(-2px)}
.album-cover{width:100%;height:150px;object-fit:cover;display:block}
.album-cover-placeholder{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-surface),var(--bg-card));color:var(--pri);font-size:36px;height:150px}
.album-info{padding:14px 16px}
.album-title{font-size:14.5px;font-weight:600;margin-bottom:3px}
.album-date{font-size:13px;color:var(--text-sec)}
.album-count{font-size:12px;color:var(--pri);margin-top:2px}

/* ===== Photo Grid ===== */
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.photo-item{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);aspect-ratio:1}
.photo-item img{width:100%;height:100%;object-fit:cover;cursor:pointer;transition:transform .2s}
.photo-item img:hover{transform:scale(1.04)}
.photo-delete{position:absolute;top:5px;right:5px;width:24px;height:24px;border-radius:50%;background:rgba(248,113,113,.9);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;text-decoration:none;opacity:0;transition:opacity .12s}
.photo-item:hover .photo-delete{opacity:1}
.photo-delete:hover{background:var(--red);text-decoration:none;color:#fff}

/* ===== Lightbox ===== */
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.9);z-index:9999;align-items:center;justify-content:center;cursor:pointer}
.lightbox.show{display:flex}
.lightbox img{max-width:90%;max-height:90%;border-radius:var(--radius-sm)}

/* ===== Admin Dashboard ===== */
.admin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(195px,1fr));gap:12px}
.admin-card{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:20px;text-align:center;
  transition:all .15s;color:var(--text);
  text-decoration:none
}
.admin-card:hover{border-color:var(--border-light);box-shadow:var(--shadow);transform:translateY(-2px);text-decoration:none}
.admin-card-icon{font-size:28px;margin-bottom:8px}
.admin-card-title{font-size:14.5px;font-weight:600;margin-bottom:3px}
.admin-card-desc{font-size:12.5px;color:var(--text-sec)}

/* ===== Carousel Admin ===== */
.carousel-admin-list{display:flex;flex-direction:column;gap:10px}
.carousel-admin-item{display:flex;gap:14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px;align-items:flex-start}
.carousel-admin-thumb{width:120px;height:68px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0}
.carousel-admin-info{flex:1;color:var(--text-sec)}

/* ===== Rich Content ===== */
.rich-content{line-height:1.75;color:var(--text-sec)}
.rich-content h1,.rich-content h2,.rich-content h3{margin:18px 0 8px;color:var(--text)}
.rich-content p{margin-bottom:10px}
.rich-content img{max-width:100%;border-radius:var(--radius-sm);margin:10px 0}
.rich-content ul,.rich-content ol{margin:10px 0 10px 24px}
.rich-content li{margin-bottom:4px}
.rich-content blockquote{border-left:3px solid var(--pri);padding:8px 16px;margin:10px 0;background:var(--pri-dim);border-radius:0 var(--radius-sm) var(--radius-sm) 0}
.rich-content pre{background:var(--bg-surface);border:1px solid var(--border);color:var(--text-sec);padding:12px 16px;border-radius:var(--radius-sm);overflow-x:auto;margin:10px 0;font-size:13px}

/* ===== Experience ===== */
.exp-cat-bar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.exp-cat-chip{
  padding:6px 15px;border-radius:20px;
  background:var(--bg-card);color:var(--text-sec);
  font-size:13.5px;font-weight:600;
  border:1px solid var(--border);text-decoration:none;
  display:inline-flex;align-items:center;gap:5px;
  transition:all .15s
}
.exp-cat-chip:hover{border-color:var(--border-light);color:var(--pri);text-decoration:none}
.exp-cat-chip.active{background:var(--pri);color:var(--bg);border-color:var(--pri)}
.exp-cat-count{background:rgba(0,0,0,.2);padding:0 7px;border-radius:10px;font-size:11.5px}
.exp-cat-chip.active .exp-cat-count{background:rgba(0,0,0,.2)}
.exp-article-list{display:flex;flex-direction:column;gap:10px}
.exp-article-card{
  display:block;background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px 20px;
  border-left:3px solid var(--pri);transition:all .12s;text-decoration:none
}
.exp-article-card:hover{border-color:var(--border-light);box-shadow:var(--shadow);text-decoration:none}
.exp-article-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:5px}
.exp-article-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--text-sec);font-size:12.5px}

/* ===== Confirm Modal ===== */
.confirm-modal{
  display:none;position:fixed;inset:0;
  background:rgba(0,0,0,.6);backdrop-filter:blur(4px);
  z-index:10000;align-items:center;justify-content:center
}
.confirm-modal.show{display:flex;animation:fadeIn .15s}
.confirm-box{
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:24px;
  max-width:360px;width:90%;box-shadow:var(--shadow-lg)
}
.confirm-box p{color:var(--text);font-size:14.5px;margin-bottom:18px;line-height:1.6}
.confirm-actions{display:flex;gap:10px;justify-content:flex-end}

/* ===== Empty State ===== */
.empty-state{text-align:center;color:var(--text-mute);padding:44px 16px;font-size:14px}

/* ===== Quill Override ===== */
#editor{background:var(--bg-surface);border-radius:var(--radius-sm)}
.ql-editor{min-height:200px;font-size:14px;line-height:1.7;color:var(--text-sec)}
.ql-toolbar.ql-snow{border:1px solid var(--border);border-radius:var(--radius-sm) var(--radius-sm) 0 0;background:var(--bg-card)}
.ql-container.ql-snow{border:1px solid var(--border);border-top:none;border-radius:0 0 var(--radius-sm) var(--radius-sm)}
.ql-snow .ql-stroke{stroke:var(--text-sec)!important}
.ql-snow .ql-fill{fill:var(--text-sec)!important}
.ql-snow .ql-picker-label{color:var(--text-sec)!important}

/* ===== KaTeX Dark Theme ===== */
.katex{color:var(--text)}
.katex .mord,.katex .mbin,.katex .mrel,.katex .mopen,.katex .mclose,.katex .mpunct,.katex .minner{color:var(--text)}

/* ===== Footer ===== */
.footer{
  border-top:1px solid var(--border);
  padding:24px 20px;
  background:var(--bg-surface);margin-top:auto;
  position:relative;z-index:1
}
.footer-inner{max-width:1040px;margin:0 auto;text-align:center}
.footer-brand{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:12px;color:var(--text);font-size:15px;font-weight:600}
.footer-logo{width:24px;height:24px;border-radius:5px}
.footer-links{display:flex;justify-content:center;gap:20px;margin-bottom:12px;flex-wrap:wrap}
.footer-links a{color:var(--text-sec);font-size:13.5px;transition:color .12s}
.footer-links a:hover{color:var(--text);text-decoration:none}
.footer-copy{font-size:12px;color:var(--text-dim)}

/* ===== Scroll Reveal ===== */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s,transform .5s}
.reveal.visible{opacity:1;transform:translateY(0)}

/* ===== Responsive ===== */
@media(max-width:768px){
  .navbar{padding:0 12px;height:52px}
  .navbar.scrolled{height:46px}
  .nav-toggle{display:block}
  .nav-brand{font-size:15px;margin-right:8px}
  .nav-logo{width:26px;height:26px}
  .nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-card);flex-direction:column;padding:10px;gap:0;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);max-height:80vh;overflow-y:auto}
  .nav-menu.open{display:flex}
  .nav-menu > li{width:100%}
  .nav-menu > li > a{padding:12px 14px;border-radius:var(--radius-sm);font-size:14px}
  .nav-dropdown-menu{position:static;display:none;background:transparent;box-shadow:none;border:none;padding-left:12px;margin-top:4px}
  .nav-dropdown.expand .nav-dropdown-menu{display:block}
  .nav-dropdown-menu li a{padding:10px 16px;font-size:13px}
  .nav-user-block{flex-direction:column;align-items:flex-start;gap:8px;margin-top:8px;padding-top:8px;border-top:1px solid var(--border);width:100%}
  .nav-user-name{font-size:13px}
  .nav-auth{margin-top:8px;padding-top:8px;border-top:1px solid var(--border);width:100%}
  .btn-login{width:100%;text-align:center;padding:10px}
  .container{padding:14px 10px}
  .page-header{flex-direction:column;align-items:flex-start}
  .page-header h1{font-size:20px}
  h2{font-size:17px}
  .home-grid{grid-template-columns:1fr}
  .feature-strip{grid-template-columns:repeat(2,1fr);gap:8px}
  .feature-card{padding:14px 12px;gap:10px}
  .feature-icon{width:38px;height:38px;font-size:20px}
  .feature-name{font-size:13px}
  .feature-desc{font-size:11px}
  .form-card{max-width:100%;padding:20px 16px}
  .table-wrap{overflow-x:auto}
  .table th,.table td{padding:8px 10px;font-size:13px}
  .carousel{aspect-ratio:16/9;border-radius:var(--radius);margin-bottom:20px}
  .carousel-btn{width:32px;height:32px;font-size:14px}
  .carousel-caption{font-size:13px;bottom:12px;left:12px;padding:6px 12px}
  .hero-inner{padding:40px 20px}
  .hero-title{font-size:28px}
  .hero-sub{font-size:14px}
  .hero-cta{flex-direction:column;width:100%}
  .btn-hero{width:100%}
  .btn-ghost{width:100%}
  .officer-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
  .award-grid{grid-template-columns:1fr}
  .album-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
  .photo-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px}
  .admin-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .admin-card{padding:16px}
  .stats-bar{gap:6px}
  .stats-item{padding:4px 10px;font-size:12px}
  .exp-cat-bar{gap:6px}
  .exp-cat-chip{padding:5px 12px;font-size:13px}
  .notice-card{padding:14px 16px}
  .footer-links{gap:12px;flex-wrap:wrap}
  .footer{padding:20px 14px}
  .cohort-title{font-size:16px}
}

@media(max-width:480px){
  .navbar{padding:0 10px;height:48px}
  .navbar.scrolled{height:44px}
  .nav-brand{font-size:14px}
  .nav-brand span{font-size:13px}
  .nav-logo{width:24px;height:24px}
  .nav-menu > li > a{padding:10px 12px;font-size:13px}
  .container{padding:10px 6px}
  .page-header h1{font-size:18px}
  h2{font-size:16px}
  .form-card{max-width:100%;padding:16px 12px;border-radius:var(--radius)}
  .form-group input,.form-group textarea,.form-group select{padding:8px 12px;font-size:13px}
  .table th,.table td{padding:6px 8px;font-size:12px}
  .btn,.btn-sm{font-size:13px;padding:6px 14px}
  .btn-sm{padding:4px 10px;font-size:12px}
  .feature-strip{grid-template-columns:1fr;gap:6px}
  .feature-card{padding:12px 14px}
  .admin-grid{grid-template-columns:1fr;gap:8px}
  .admin-card{padding:14px}
  .carousel-admin-item{flex-direction:column}
  .carousel-admin-thumb{width:100%;height:auto;aspect-ratio:16/9}
  .hero-title{font-size:24px}
  .hero-inner{padding:36px 16px}
  .hero-tags span{font-size:12px;padding:4px 12px}
  .carousel{aspect-ratio:16/9;border-radius:8px;margin-bottom:16px}
  .carousel-btn{width:28px;height:28px;font-size:12px}
  .carousel-dot{width:6px;height:6px}
  .carousel-dot.active{width:18px}
  .notice-card-title{font-size:14px}
  .notice-card{padding:12px 14px}
  .exp-cat-chip{font-size:12px;padding:4px 10px}
  .exp-article-card{padding:14px 16px}
  .album-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
  .photo-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:6px}
  .stats-item{font-size:11px;padding:3px 8px}
}