*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Microsoft YaHei","PingFang SC",-apple-system,Arial,sans-serif;background:#f3f5f8;color:#1f2937;font-size:14px}
a{color:#2563eb;text-decoration:none}
a:hover{text-decoration:underline}
/* 顶部导航 */
.topbar{background:#1f2937;color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:52px}
.topbar .brand{font-weight:700;font-size:16px;color:#fff}
.topbar nav a{color:#d1d5db;margin-left:18px;font-size:14px}
.topbar nav a:hover,.topbar nav a.active{color:#fff}
.topbar .me{color:#9ca3af;font-size:13px}
/* 布局 */
.wrap{max-width:1280px;margin:20px auto;padding:0 16px}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:18px;margin-bottom:16px}
.card h2{font-size:17px;margin-bottom:14px;border-left:3px solid #2563eb;padding-left:10px}
.card h3{font-size:15px;margin:12px 0 8px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:16px}
.stat .n{font-size:26px;font-weight:700;color:#2563eb}
.stat .t{color:#6b7280;font-size:13px;margin-top:6px}
/* 表单 */
input,select,textarea{padding:8px 10px;border:1px solid #d1d5db;border-radius:6px;font-size:14px;font-family:inherit;background:#fff}
textarea{width:100%;resize:vertical}
label{display:block;margin:8px 0 4px;color:#374151;font-size:13px}
.btn{display:inline-block;padding:8px 16px;background:#2563eb;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:14px;text-align:center}
.btn:hover{background:#1d4ed8;text-decoration:none}
.btn.gray{background:#6b7280}
.btn.sm{padding:4px 10px;font-size:12px}
.btn.green{background:#059669}
.btn.danger{background:#dc2626}
.btn.full{width:100%}
/* 表格 */
table{width:100%;border-collapse:collapse;font-size:13px;background:#fff}
th,td{border:1px solid #e5e7eb;padding:8px 10px;vertical-align:top;text-align:left}
th{background:#f9fafb;font-weight:600}
/* 状态标签 */
.tag{display:inline-block;padding:2px 8px;border-radius:10px;font-size:12px}
.tag.gray{background:#f3f4f6;color:#6b7280}
.tag.blue{background:#dbeafe;color:#1d4ed8}
.tag.green{background:#d1fae5;color:#047857}
.tag.red{background:#fee2e2;color:#b91c1c}
.tag.orange{background:#ffedd5;color:#c2410c}
/* 登录 */
.login-box{width:380px;margin:90px auto;background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:30px}
.login-box input{width:100%;margin:8px 0;padding:11px}
.login-box h1{text-align:center;font-size:20px;margin-bottom:16px}
.err{color:#dc2626;background:#fee2e2;padding:8px;border-radius:6px;margin:8px 0;font-size:13px}
/* 对话页 */
.chat-layout{display:flex;height:calc(100vh - 52px)}
.chat-side{width:250px;background:#1f2937;color:#d1d5db;padding:12px;overflow:auto}
.chat-side .item{padding:9px 10px;border-radius:6px;margin:4px 0;cursor:pointer;font-size:13px;word-break:break-all}
.chat-side .item:hover{background:#374151}
.chat-side .item.active{background:#2563eb;color:#fff}
.chat-main{flex:1;display:flex;flex-direction:column;background:#f8fafc}
.chat-body{flex:1;overflow:auto;padding:20px}
.msg{margin:12px 0;display:flex}
.msg.user{justify-content:flex-end}
.bubble{max-width:72%;padding:11px 14px;border-radius:10px;white-space:pre-wrap;line-height:1.6}
.msg.user .bubble{background:#2563eb;color:#fff}
.msg.bot .bubble{background:#fff;border:1px solid #e5e7eb}
.chat-send{display:flex;padding:14px;border-top:1px solid #e5e7eb;background:#fff}
.chat-send textarea{flex:1;height:74px;border:1px solid #d1d5db;border-radius:8px;padding:10px}
/* 视频项目工作台 */
.proj-layout{display:flex;gap:16px;align-items:flex-start}
.proj-left{width:300px;flex-shrink:0}
.proj-right{flex:1;min-width:0}
.card ul.asset{list-style:none}
ul.asset li{border:1px solid #e5e7eb;border-radius:8px;padding:10px;margin:8px 0;background:#fff}
.shot{border:1px solid #e5e7eb;border-radius:8px;padding:12px;margin:10px 0;background:#fff}
.shot .head{display:flex;justify-content:space-between;align-items:center}
.shot video{max-width:100%;margin-top:8px;border-radius:8px}
.refimg{max-width:120px;max-height:120px;border-radius:6px;border:1px solid #eee;margin-top:6px}
.muted{color:#6b7280;font-size:12px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.steps{display:flex;gap:8px;margin:10px 0;flex-wrap:wrap}
.steps .b{padding:6px 12px;border-radius:14px;background:#e5e7eb;font-size:13px}
.steps .b.on{background:#2563eb;color:#fff}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:8px 0}
.right{text-align:right}
.hint{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af;padding:10px 12px;border-radius:8px;font-size:13px;margin:10px 0}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.proj-layout{flex-direction:column}.proj-left{width:100%}.two-col{grid-template-columns:1fr}}