:root{--njit-blue: #004098;--njit-blue-light: #1a5bb8;--njit-blue-deep: #003070;--page-bg: #eef2f7;--card-radius: 10px;--primary: #004098}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%}body{font-family:PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;background:var(--page-bg);color:#1f1f1f;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--page-bg)}.page-container{width:100%;max-width:1180px;margin:0 auto;padding:0 16px 24px}.page-container-wide{width:100%;max-width:1280px;margin:0 auto;padding:0 16px 24px}.top-bar{height:32px;background:linear-gradient(90deg,#003070 0%,#004098 100%);color:#ffffffeb;font-size:12px;display:flex;align-items:center}.top-bar-inner{width:100%;max-width:1180px;margin:0 auto;padding:0 16px;display:flex;justify-content:space-between;align-items:center}.top-bar-actions{display:flex;align-items:center;gap:14px}.top-bar-actions span,.top-bar-actions a{cursor:pointer;opacity:.9}.top-bar-actions span:hover,.top-bar-actions a:hover{opacity:1}.main-header{background:#fff;border-bottom:1px solid #e8edf3}.main-header-inner{width:100%;max-width:1180px;margin:0 auto;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}.brand-logo{width:52px;height:52px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#1a6ad4,#004098 70%);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:11px;letter-spacing:.5px;box-shadow:0 2px 8px #00409859}.brand-text .cn{font-size:18px;font-weight:700;color:#004098;line-height:1.2}.brand-text .en{font-size:10px;color:#7a8aa0;letter-spacing:.3px;margin-top:2px}.platform-title{flex:1;text-align:center;min-width:0}.platform-title h1{font-size:22px;font-weight:700;color:#1a2b4a;line-height:1.3}.platform-title .sub{margin-top:4px;font-size:12px;color:#8a97ab;display:flex;justify-content:center;flex-wrap:wrap;gap:6px}.platform-title .sub span:after{content:" | ";color:#c5ced9;margin-left:6px}.platform-title .sub span:last-child:after{content:""}.user-block{display:flex;align-items:center;gap:10px;flex-shrink:0}.user-meta{line-height:1.35}.user-meta .name{font-size:14px;font-weight:600;color:#1f2d3d}.user-meta .role{font-size:12px;color:#8a97ab}.user-links{display:flex;gap:8px;font-size:12px}.user-links a{color:#004098;cursor:pointer}.user-links a:hover{text-decoration:underline}.student-tabs{background:#fff;border-bottom:1px solid #e8edf3}.student-tabs-inner{width:100%;max-width:1180px;margin:0 auto;padding:10px 16px 12px;display:flex;gap:10px;flex-wrap:wrap}.student-tab{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:6px;font-size:14px;color:#4a5568;background:#f5f7fa;border:1px solid transparent;cursor:pointer;transition:all .2s}.student-tab:hover{color:#004098;background:#eef4fc}.student-tab.active{background:#004098;color:#fff;box-shadow:0 2px 8px #0040984d}.page-banner{position:relative;overflow:hidden;border-radius:var(--card-radius);background:linear-gradient(135deg,#003070 0%,#004098 45%,#1a6ad4 100%);color:#fff;padding:28px 32px;margin:16px 0;min-height:120px}.page-banner:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 85% 20%,rgba(255,255,255,.12),transparent 40%),radial-gradient(circle at 70% 80%,rgba(255,255,255,.08),transparent 35%);pointer-events:none}.page-banner .crumb{position:relative;z-index:1;font-size:12px;opacity:.85;margin-bottom:10px}.page-banner .en{position:relative;z-index:1;font-size:12px;letter-spacing:1.5px;opacity:.7;margin-bottom:4px}.page-banner h2{position:relative;z-index:1;font-size:28px;font-weight:700;line-height:1.2}.page-banner .desc{position:relative;z-index:1;margin-top:8px;font-size:13px;opacity:.88;max-width:560px}.page-banner .watermark{position:absolute;right:24px;top:50%;transform:translateY(-50%);font-size:72px;font-weight:800;letter-spacing:4px;opacity:.12;z-index:0;-webkit-user-select:none;user-select:none}.content-card{background:#fff;border-radius:var(--card-radius);box-shadow:0 1px 4px #0f28500f;padding:20px 22px;margin-bottom:16px}.section-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.section-title .left{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:600;color:#1a2b4a}.section-title .left:before{content:"";width:4px;height:16px;background:#004098;border-radius:2px}.section-title .right-meta{font-size:13px;color:#8a97ab}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat-item{text-align:center;padding:8px 0}.stat-item .label{font-size:13px;color:#8a97ab;margin-bottom:6px}.stat-item .value{font-size:28px;font-weight:700;line-height:1.2}.stat-item .value.blue{color:#004098}.stat-item .value.green{color:#22a06b}.stat-item .value.orange{color:#e67e22}.stat-item .value.sky{color:#3498db}.stat-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}.stat-card{position:relative;overflow:hidden;background:#fff;border-radius:var(--card-radius);box-shadow:0 1px 4px #0f28500f;padding:18px 20px}.stat-card:after{content:"";position:absolute;right:-20px;top:-20px;width:80px;height:80px;border-radius:50%;background:rgba(0,64,152,.06)}.stat-card .label{font-size:13px;color:#8a97ab;margin-bottom:8px}.stat-card .value{font-size:32px;font-weight:700;color:#004098;line-height:1.1}.stat-card .sub{margin-top:6px;font-size:12px;color:#a0aec0}.app-footer{margin-top:auto;background:#003070;color:#ffffffe6;font-size:12px;height:40px;display:flex;align-items:center}.app-footer-inner{width:100%;max-width:1180px;margin:0 auto;padding:0 16px;display:flex;justify-content:space-between;align-items:center}.app-footer a{color:#ffffffe6;cursor:pointer}.app-footer a:hover{text-decoration:underline}.admin-layout{display:flex;gap:16px;align-items:flex-start;padding-top:16px}.admin-sider{width:220px;flex-shrink:0;background:#fff;border-radius:var(--card-radius);box-shadow:0 1px 4px #0f28500f;padding:12px 10px 16px;position:sticky;top:12px}.admin-sider .group-title{font-size:12px;color:#a0aec0;padding:10px 12px 6px}.admin-menu-item{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:6px;font-size:14px;color:#4a5568;cursor:pointer;margin-bottom:2px;transition:all .15s}.admin-menu-item:hover{background:#f0f5ff;color:#004098}.admin-menu-item.active{background:#004098;color:#fff}.admin-menu-item .badge{margin-left:auto;background:#f5222d;color:#fff;font-size:11px;min-width:18px;height:18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;padding:0 5px}.admin-menu-item.active .badge{background:#ff4d4f;color:#fff}.admin-main{flex:1;min-width:0}.submission-card{border:1px solid #e8edf3;border-radius:8px;padding:16px 18px;margin-bottom:14px;background:#fff}.submission-card .card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}.submission-card .card-title{font-size:15px;font-weight:600;color:#1a2b4a;margin-bottom:6px}.timeline{padding-left:8px}.timeline-item{position:relative;padding-left:20px;padding-bottom:14px}.timeline-item:last-child{padding-bottom:0}.timeline-item:before{content:"";position:absolute;left:4px;top:8px;bottom:-6px;width:2px;background:#e8edf3}.timeline-item:last-child:before{display:none}.timeline-dot{position:absolute;left:0;top:6px;width:10px;height:10px;border-radius:50%;background:#004098}.timeline-dot.pending{background:#fa8c16}.timeline-dot.success{background:#52c41a}.timeline-dot.error{background:#f5222d}.timeline-content .step{font-size:13px;color:#1f1f1f;font-weight:500}.timeline-content .meta{font-size:12px;color:#8a97ab;margin-top:2px}.reject-box{margin-top:8px;background:#fff1f0;border:1px solid #ffccc7;border-radius:6px;padding:8px 12px;font-size:12px;color:#cf1322}.export-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.export-card{border:1px solid #e8edf3;border-radius:8px;padding:20px 16px;text-align:center;background:#fafbfd;transition:box-shadow .2s}.export-card:hover{box-shadow:0 4px 12px #0040981a}.export-card .icon{font-size:32px;margin-bottom:10px}.export-card .title{font-size:15px;font-weight:600;color:#1a2b4a;margin-bottom:6px}.export-card .desc{font-size:12px;color:#8a97ab;margin-bottom:14px;min-height:36px}.dict-row{display:flex;align-items:flex-start;gap:12px;padding:14px 0;border-bottom:1px solid #f0f2f5}.dict-row:last-child{border-bottom:none}.dict-label{width:160px;flex-shrink:0;font-size:13px;color:#4a5568;padding-top:4px}.dict-tags{flex:1;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.tip-box{background:#f5f8fc;border-radius:8px;padding:12px 16px;font-size:13px;color:#5a6a7e;line-height:1.6;margin-top:8px}.login-page{min-height:100vh;display:flex;flex-direction:column;background:linear-gradient(rgba(0,40,110,.15) 1px,transparent 1px),linear-gradient(90deg,rgba(0,40,110,.15) 1px,transparent 1px),radial-gradient(ellipse at center,#1a5bb8 0%,#003070 55%,#001a40 100%);background-size:48px 48px,48px 48px,100% 100%}.login-topbar{height:36px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;color:#ffffffeb;font-size:12px;background:rgba(0,30,80,.35);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.login-topbar-actions{display:flex;gap:18px}.login-topbar-actions span{cursor:pointer;opacity:.9;display:inline-flex;align-items:center;gap:4px}.login-topbar-actions span:hover{opacity:1}.login-card{width:min(920px,calc(100% - 40px));margin:auto;display:grid;grid-template-columns:1.05fr 1fr;border-radius:14px;overflow:hidden;box-shadow:0 20px 50px #00000059;background:#fff;min-height:520px}.login-left{position:relative;overflow:hidden;background:linear-gradient(160deg,#004098 0%,#1a5bb8 50%,#003070 100%);color:#fff;padding:36px 32px 28px}.login-left-watermark{position:absolute;top:48px;left:20px;right:20px;font-size:28px;font-weight:800;letter-spacing:1px;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.18);opacity:.7;pointer-events:none;line-height:1.2}.login-brand-title{position:relative;z-index:1;font-size:34px;font-weight:800;line-height:1.25;margin-bottom:8px}.login-brand-en{position:relative;z-index:1;font-size:11px;letter-spacing:1.2px;opacity:.75;margin-bottom:22px}.login-logo-wrap{position:relative;z-index:1;display:flex;align-items:center;gap:12px;margin-bottom:22px}.login-logo-circle{width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}.login-logo-name{font-size:14px;font-weight:600}.login-logo-en{font-size:10px;opacity:.7;margin-top:2px;line-height:1.3}.login-features{position:relative;z-index:1;list-style:none;display:flex;flex-direction:column;gap:12px}.login-features li{display:flex;align-items:flex-start;gap:8px;font-size:12px;line-height:1.5;opacity:.95}.login-feature-num{width:18px;height:18px;border-radius:50%;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.45);display:inline-flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;margin-top:1px}.login-feature-icon{opacity:.85;margin-top:1px}.login-left-deco{position:absolute;right:-60px;bottom:-70px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.08);box-shadow:-40px -30px #ffffff0d;pointer-events:none}.login-right{padding:40px 36px 28px;display:flex;flex-direction:column}.login-right h2{font-size:24px;font-weight:700;color:#1a2b4a;margin-bottom:6px}.login-hint{font-size:12px;color:#8a97ab;margin-bottom:20px}.login-roles{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:18px}.login-role-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:40px;border-radius:8px;border:1px solid #d9e2ec;background:#f7f9fc;color:#4a5568;font-size:14px;cursor:pointer;transition:all .15s}.login-role-btn:hover{border-color:#004098;color:#004098}.login-role-btn.active{background:#eef4fc;border-color:#004098;color:#004098;font-weight:600;box-shadow:0 0 0 1px #004098 inset}.login-submit{height:44px!important;font-size:16px!important;margin-top:4px}.login-accounts{margin-top:18px;font-size:12px;color:#5a6a7e;line-height:1.6}.login-accounts b{color:#004098;font-weight:600}.login-pwd-note{margin-top:6px;font-size:12px;color:#a0aec0}.form-actions{display:flex;align-items:center;gap:12px;margin-top:4px;flex-wrap:wrap}.form-actions-wrap{justify-content:flex-start}.form-actions-meta{color:#8a97ab;font-size:13px}.modal-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.modal-grid-3{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:12px}.chart-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.admin-mobile-bar{display:none;margin:12px 0 0}.admin-sider-desktop{display:block}@media (max-width: 960px){.stats-row,.stat-cards,.export-grid{grid-template-columns:repeat(2,1fr)}.admin-layout{flex-direction:column}.admin-sider-desktop{display:none}.admin-mobile-bar{display:block}.admin-sider{width:100%;position:static;box-shadow:none}.main-header-inner{flex-wrap:wrap;gap:12px}.platform-title{order:3;width:100%;text-align:left}.platform-title h1{font-size:18px}.login-card{grid-template-columns:1fr;margin:24px auto}.login-left{display:none}.chart-grid-2{grid-template-columns:1fr}.modal-grid-3{grid-template-columns:1fr 1fr}}@media (max-width: 768px){.page-container,.page-container-wide{padding:0 10px 16px}.top-bar{height:auto;min-height:32px;padding:6px 0}.top-bar-inner{flex-direction:column;align-items:flex-start;gap:4px;font-size:11px}.main-header-inner{padding:10px 12px}.brand-logo{width:40px;height:40px;font-size:10px}.brand-text .cn{font-size:15px}.brand-text .en,.platform-title .sub{display:none}.user-block{width:100%;justify-content:flex-start}.student-tabs-inner{padding:8px 10px 10px;gap:8px;overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.student-tab{flex-shrink:0;padding:8px 12px;font-size:13px}.page-banner{padding:18px 16px;min-height:auto;margin:12px 0}.page-banner h2{font-size:22px}.page-banner .watermark{font-size:42px;right:10px}.page-banner .desc{font-size:12px}.content-card{padding:14px 12px}.section-title{flex-direction:column;align-items:flex-start;gap:10px}.stats-row,.stat-cards,.export-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card .value,.stat-item .value{font-size:24px}.app-footer{height:auto;min-height:40px;padding:10px 0}.app-footer-inner{flex-direction:column;align-items:flex-start;gap:6px}.dict-row{flex-direction:column;gap:8px}.dict-label{width:100%}.login-card{width:calc(100% - 24px);min-height:auto}.login-right{padding:24px 18px 20px}.login-right h2{font-size:20px}.login-roles{grid-template-columns:1fr 1fr}.modal-grid-2,.modal-grid-3{grid-template-columns:1fr}.submission-card .card-head{flex-direction:column}.ant-table{font-size:12px}.ant-pagination{flex-wrap:wrap}}@media (max-width: 480px){.stats-row,.stat-cards,.export-grid{grid-template-columns:1fr}.user-links{margin-left:auto}.form-actions{width:100%}.form-actions .ant-btn{flex:1;min-width:0}.form-actions-meta{width:100%}.login-topbar{padding:0 12px}.page-banner .crumb,.page-banner .en{font-size:11px}}body.dark-mode{--page-bg: #0f1419;--njit-blue: #3d7dd6;background:#0f1419;color:#e8eaed}body.dark-mode .app-shell{background:#0f1419}body.dark-mode .main-header,body.dark-mode .student-tabs,body.dark-mode .content-card,body.dark-mode .stat-card,body.dark-mode .admin-sider,body.dark-mode .submission-card,body.dark-mode .export-card{background:#1a1f26;border-color:#2a3340;color:#e8eaed}body.dark-mode .platform-title h1,body.dark-mode .section-title .left,body.dark-mode .user-meta .name,body.dark-mode .brand-text .cn,body.dark-mode .card-title{color:#f0f3f7}body.dark-mode .student-tab{background:#242b36;color:#c5ced9}body.dark-mode .student-tab.active{background:#004098;color:#fff}body.dark-mode .admin-menu-item{color:#c5ced9}body.dark-mode .admin-menu-item:hover{background:#242b36}body.dark-mode .tip-box,body.dark-mode .reject-box{background:#242b36;border-color:#3a4452;color:#c5ced9}body.dark-mode .login-page{background:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px),radial-gradient(ellipse at center,#12263f 0%,#0a1220 55%,#05080f 100%);background-size:48px 48px,48px 48px,100% 100%}body.dark-mode .login-right{background:#1a1f26}body.dark-mode .login-right h2{color:#f0f3f7}