*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0d1117;--card:#161b22;--border:#30363d;--text:#c9d1d9;--muted:#8b949e;--accent:#58a6ff;--green:#3fb950;--orange:#d29922;--red:#f85149;--purple:#bc8cff;--yellow:#e3b341}
body{font-family:'Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
header{background:var(--card);border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}
.logo{font-size:18px;font-weight:700;color:#fff}
.logo span{color:var(--accent)}
nav{display:flex;gap:18px;align-items:center}
nav a{color:var(--muted);font-size:14px}
nav a:hover,nav a.active{color:var(--accent);text-decoration:none}
main{max-width:1100px;margin:0 auto;padding:28px 24px}
h1{font-size:22px;margin-bottom:20px;color:#fff}
h2{font-size:16px;color:#fff;margin:20px 0 10px}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;font-size:14px;cursor:pointer;border:none;font-family:inherit;font-weight:500;transition:all .15s;background:transparent;color:var(--text)}
.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#4090e0}
.btn-secondary{background:var(--card);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{border-color:var(--accent)}
.btn-danger{background:#3d1418;color:var(--red)}.btn-danger:hover{background:#5d1f1f}
.btn-success{background:#1a3d1a;color:var(--green)}.btn-success:hover{background:#2a5a2a}
.btn-sm{padding:5px 12px;font-size:13px}
.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:11px;font-weight:600}
.badge-admin{background:#2d1b4e;color:var(--purple)}
.badge-member{background:#1a2d3d;color:var(--accent)}
.badge-pending{background:#3d2e00;color:var(--orange)}
.badge-approved{background:#1a3d1a;color:var(--green)}
.badge-rejected{background:#3d1418;color:var(--red)}
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:16px}
.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.card-title{font-size:15px;font-weight:600;color:#fff}
.input,.select,.textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;background:#0d1117;color:var(--text);font-size:14px;font-family:inherit;transition:border .2s}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:var(--accent)}
.textarea{resize:vertical;min-height:90px}
.form-group{margin-bottom:14px}
.form-label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.row{display:flex;gap:12px}
.col{flex:1;min-width:0}
.flex{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.gap8{gap:8px}.gap12{gap:12px}
.tag{display:inline-block;padding:3px 10px;border-radius:14px;font-size:12px;background:#1c2536;color:var(--accent);border:1px solid #2d3f58}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:20px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:14px 16px;text-align:center}
.stat-n{font-size:28px;font-weight:700;color:var(--accent)}
.stat-label{font-size:12px;color:var(--muted);margin-top:2px}
table{width:100%;border-collapse:collapse}
th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}
th{color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase}
tr:hover td{background:#1c2128}
.msg{background:#1a2d3d;border:1px solid var(--accent);border-radius:6px;padding:10px 14px;font-size:14px;margin-bottom:14px}
.error{background:#3d1418;border-color:var(--red);color:#ffa0a0}
.success{background:#1a3d1a;border-color:var(--green);color:#a0ffa0}
.alert{background:#3d2e00;border-color:var(--orange);color:#ffd080;padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:14px}
.empty{text-align:center;padding:48px;color:var(--muted)}
.empty-icon{font-size:48px;margin-bottom:12px;opacity:.35}
.comment{margin-bottom:10px}
.comment-body{padding:8px 12px;background:#0d1117;border:1px solid var(--border);border-radius:6px;border-left:3px solid var(--accent);font-size:14px}
.comment-body.type-question{border-left-color:var(--orange)}
.comment-body.type-concern{border-left-color:var(--red)}
.comment-body.type-praise{border-left-color:var(--green)}
.comment-meta{font-size:12px;color:var(--muted);margin-top:4px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.vote-btn{padding:3px 10px;font-size:12px;border-radius:4px;cursor:pointer;border:1px solid var(--border);background:transparent;color:var(--muted);font-family:inherit}
.vote-btn:hover{color:var(--accent);border-color:var(--accent)}
.vote-btn.active-up{color:var(--green);border-color:var(--green);background:#1a3d1a}
.vote-btn.active-down{color:var(--red);border-color:var(--red);background:#3d1418}
.resolved-label{font-size:11px;background:#1a3d1a;color:var(--green);padding:1px 6px;border-radius:4px}
.material-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:14px 16px;margin-bottom:12px;transition:border .2s}
.material-card:hover{border-color:#3a4a5a}
.material-type{font-size:11px;color:var(--muted);text-transform:uppercase;margin-bottom:2px}
.material-title{font-size:15px;font-weight:600;margin-bottom:4px}
.material-content{font-size:13px;background:#0d1117;border:1px solid var(--border);border-radius:6px;padding:10px;margin-top:8px;max-height:300px;overflow:auto;white-space:pre-wrap;word-break:break-all;line-height:1.6}
.material-meta{font-size:12px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.slide-item{display:flex;gap:10px;align-items:flex-start;padding:10px;background:#0d1117;border:1px solid var(--border);border-radius:6px;margin-bottom:8px}
.slide-num{background:var(--accent);color:#fff;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0;margin-top:2px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:700px){.split{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}}
#login-screen{max-width:420px;margin:80px auto}
.login-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px}
.login-card h1{text-align:center;margin-bottom:24px;font-size:22px}
.footer{text-align:center;padding:32px;color:var(--muted);font-size:13px;border-top:1px solid var(--border);margin-top:40px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:640px){.two-col{grid-template-columns:1fr}}
.presence-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);margin-right:5px;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
#toasts{position:fixed;top:70px;right:20px;z-index:999;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--card);border:1px solid var(--accent);border-left:3px solid var(--accent);color:var(--text);padding:10px 16px;border-radius:8px;font-size:13px;box-shadow:0 4px 16px rgba(0,0,0,.4);animation:slidein .25s}
@keyframes slidein{from{transform:translateX(30px);opacity:0}to{transform:none;opacity:1}}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:200}
.modal-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;width:min(560px,92vw);max-height:85vh;overflow:auto}
.online-list{font-size:12px;color:var(--muted)}
.hint{font-size:12px;color:var(--muted);margin-top:4px}