:root{--bg:#f6f7fb;--card:#fff;--text:#172033;--muted:#667085;--pri:#2563eb;--pri2:#1d4ed8;--danger:#dc2626;--ok:#16a34a;--border:#e5e7eb;--warn:#f59e0b}*{box-sizing:border-box}body{margin:0;background:linear-gradient(135deg,#eef2ff,#f8fafc 45%,#ecfeff);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Microsoft YaHei",Arial,sans-serif}.wrap{max-width:1120px;margin:0 auto;padding:18px}.top{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:5}.brand{display:flex;gap:12px;align-items:center;justify-content:space-between}.logo{font-weight:800;font-size:20px;color:var(--pri);text-decoration:none}.nav{display:flex;gap:8px;flex-wrap:wrap}.nav a,.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--border);background:#fff;color:var(--text);padding:9px 12px;border-radius:12px;text-decoration:none;font-size:14px;cursor:pointer}.nav a.active,.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}.btn.primary:hover{background:var(--pri2)}.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}.btn.ok{background:var(--ok);border-color:var(--ok);color:#fff}.btn.warn{background:var(--warn);border-color:var(--warn);color:#fff}.grid{display:grid;grid-template-columns:280px 1fr;gap:18px}.card{background:rgba(255,255,255,.94);border:1px solid var(--border);border-radius:20px;padding:18px;box-shadow:0 10px 30px rgba(15,23,42,.06)}.card h2,.card h3{margin-top:0}.muted{color:var(--muted);font-size:14px}.notice{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:14px;padding:12px;margin:12px 0}.flash{padding:12px 14px;border-radius:14px;margin:12px 0;border:1px solid}.flash.ok{background:#ecfdf5;border-color:#bbf7d0;color:#166534}.flash.err{background:#fef2f2;border-color:#fecaca;color:#991b1b}input,textarea,select{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:12px;background:#fff;font:inherit}textarea{min-height:92px;resize:vertical}.form-row{margin:12px 0}label{display:block;font-weight:700;margin-bottom:6px}.msg-list{display:flex;flex-direction:column;gap:10px;max-height:58vh;overflow:auto;padding-right:4px}.msg{padding:12px;border:1px solid var(--border);border-radius:16px;background:#fff}.msg.mine{background:#eff6ff;border-color:#bfdbfe;margin-left:42px}.msg.other{margin-right:42px}.msg .meta{font-size:12px;color:var(--muted);margin-bottom:6px}.msg .body{white-space:pre-wrap;word-break:break-word}.user-list{display:flex;flex-direction:column;gap:8px}.user-item{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:10px;border:1px solid var(--border);border-radius:14px;background:#fff;text-decoration:none;color:var(--text)}.pill{font-size:12px;border-radius:999px;padding:3px 8px;background:#eef2ff;color:#3730a3}.pill.red{background:#fee2e2;color:#991b1b}.pill.green{background:#dcfce7;color:#166534}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}th,td{border-bottom:1px solid var(--border);padding:10px;text-align:left;vertical-align:top}th{background:#f8fafc}.footer{text-align:center;color:var(--muted);font-size:13px;margin:28px 0}.hero{display:grid;grid-template-columns:1fr 360px;gap:20px;align-items:start}.big{font-size:34px;line-height:1.15;margin:0 0 12px}.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.small{font-size:12px}.auth{max-width:520px;margin:auto}.sendbox{margin-top:14px}.inline{display:inline-flex;gap:6px;flex-wrap:wrap}.msgcell{min-width:260px;white-space:pre-wrap}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}.mini{border:1px solid var(--border);border-radius:14px;padding:12px;background:#fff}.mini p{margin:6px 0 0;color:var(--muted);font-size:13px}hr{border:0;border-top:1px solid var(--border);margin:18px 0}@media(max-width:820px){.grid,.hero,.stats,.steps{grid-template-columns:1fr}.msg.mine{margin-left:0}.msg.other{margin-right:0}.brand{align-items:flex-start;flex-direction:column}.nav a,.btn{padding:8px 10px}.wrap{padding:12px}.big{font-size:28px}}