:root {
  --bg: #0f1220; --panel: #181c2f; --panel2: #1f2440; --line: #2a3052;
  --text: #e8eaf6; --muted: #9aa3c7; --accent: #6c7bff; --accent2: #22d3ee;
  --ok: #34d399; --warn: #fbbf24; --err: #f87171; --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.6 "PingFang SC","Microsoft YaHei",system-ui,sans-serif; min-height: 100vh; }
a { color: var(--accent2); text-decoration: none; }
.wrap { max-width: 1000px; margin: 0 auto; padding: 0 16px; }
.wrap.wide { max-width: 1280px; }

/* 顶栏 */
.nav { display: flex; align-items: center; gap: 18px; padding: 14px 0; }
.nav .logo { font-size: 20px; font-weight: 700; color: var(--text); }
.nav .logo b { background: linear-gradient(90deg,var(--accent),var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav .links { margin-left: auto; display: flex; gap: 14px; align-items: center; }
.nav .credits { color: var(--warn); font-weight: 600; }

/* 卡片 & 通用 */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; margin-bottom: 18px; }
.hero { text-align: center; padding: 46px 0 26px; }
.hero h1 { font-size: 30px; background: linear-gradient(90deg,var(--accent),var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--muted); margin-top: 8px; }
.btn { display: inline-block; border: 0; cursor: pointer; border-radius: 10px; padding: 10px 22px; font-size: 15px; font-weight: 600; color: #fff; background: linear-gradient(90deg,var(--accent),#8b5cf6); transition: .15s; }
.btn:hover { filter: brightness(1.15); }
.btn.ghost { background: var(--panel2); border: 1px solid var(--line); color: var(--text); }
.btn.sm { padding: 6px 14px; font-size: 13px; }
.btn.danger { background: #b91c1c; }
.btn.ok { background: #059669; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
input, textarea, select { width: 100%; background: var(--panel2); border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 10px 12px; font: inherit; }
input:focus, textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
textarea { resize: vertical; min-height: 110px; }
label { display: block; color: var(--muted); font-size: 13px; margin: 12px 0 5px; }
.hint { color: var(--muted); font-size: 13px; }
.err-msg { color: var(--err); min-height: 20px; font-size: 14px; }
.ok-msg { color: var(--ok); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; word-break: break-all; }
th { color: var(--muted); font-weight: 500; }
.tag { display: inline-block; padding: 1px 10px; border-radius: 999px; font-size: 12px; }
.tag.ok { background: rgba(52,211,153,.15); color: var(--ok); }
.tag.no { background: rgba(248,113,113,.15); color: var(--err); }
.tag.warn { background: rgba(251,191,36,.15); color: var(--warn); }
.tag.info { background: rgba(108,123,255,.18); color: var(--accent); }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.row > * { flex: 1; min-width: 140px; }
.row > .fix { flex: 0 0 auto; }
h2.sec { font-size: 18px; margin-bottom: 14px; }

/* 解析结果 */
.result { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-top: 12px; background: var(--panel2); }
.result .rt { font-weight: 600; margin-bottom: 8px; word-break: break-all; }
.result .dl { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.result video { width: 100%; max-width: 340px; border-radius: 10px; margin-top: 10px; }

/* 公告 */
.notice-item { border-left: 3px solid var(--accent); padding: 4px 12px; margin-bottom: 10px; background: var(--panel2); border-radius: 0 8px 8px 0; }
.notice-item b { display: block; }
.notice-item span { color: var(--muted); font-size: 12px; }

/* 登录注册 */
.auth-box { max-width: 400px; margin: 60px auto; }

/* 后台 */
.admin-layout { display: flex; min-height: 100vh; }
.side { width: 210px; background: var(--panel); border-right: 1px solid var(--line); padding: 18px 12px; flex-shrink: 0; }
.side .t { font-weight: 700; padding: 0 10px 16px; font-size: 17px; }
.side a { display: block; color: var(--muted); padding: 10px 12px; border-radius: 10px; margin-bottom: 4px; }
.side a.on, .side a:hover { background: var(--panel2); color: var(--text); }
.main { flex: 1; padding: 22px 26px; overflow-x: auto; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 14px; margin-bottom: 18px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.stat .n { font-size: 26px; font-weight: 700; color: var(--accent2); }
.stat .l { color: var(--muted); font-size: 13px; }
.pane { display: none; }
.pane.on { display: block; }
.toast { position: fixed; top: 18px; right: 18px; background: var(--panel2); border: 1px solid var(--accent); padding: 12px 18px; border-radius: 10px; z-index: 99; display: none; max-width: 340px; }
.codes { width: 100%; min-height: 180px; font-family: Consolas,monospace; font-size: 13px; }
.footer { color: var(--muted); text-align: center; font-size: 12px; padding: 30px 0 20px; }
@media (max-width: 760px) { .admin-layout { flex-direction: column; } .side { width: auto; display: flex; overflow-x: auto; } .side a { white-space: nowrap; } }