:root{--bg:#f5f7fb;--card:#fff;--ink:#172033;--muted:#657089;--line:#e2e7f0;--primary:#2257d6;--danger:#c73535;--shadow:0 18px 50px rgba(34,58,102,.10)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif}button,input,select,textarea{font:inherit}.badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:#e8efff;color:var(--primary);font-size:13px;font-weight:700}.primary-button,.primary-small,button{border:0;border-radius:9px;cursor:pointer}.primary-button{display:inline-block;padding:13px 24px;background:var(--primary);color:#fff;text-decoration:none;font-weight:700}.primary-small{padding:9px 14px;background:var(--primary);color:#fff}.ghost-button{padding:8px 13px;background:#eef2f8;color:var(--ink)}.welcome-shell{width:min(1050px,calc(100% - 32px));margin:42px auto}.hero{padding:54px;border-radius:24px;background:linear-gradient(135deg,#fff 0%,#edf3ff 100%);box-shadow:var(--shadow)}.hero h1{font-size:40px;margin:18px 0 12px}.hero p{max-width:700px;color:var(--muted);font-size:17px;line-height:1.8;margin-bottom:28px}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin:24px 0}.steps article,.notice{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px}.steps b{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:#e8efff;color:var(--primary)}.steps h2{font-size:17px;margin:16px 0 8px}.steps p,.notice dd{color:var(--muted);line-height:1.7}.notice dt{font-weight:700;margin-top:14px}.notice dd{margin:4px 0}.login-page{min-height:100vh;display:grid;place-items:center}.login-card{width:min(410px,calc(100% - 32px));padding:36px;background:#fff;border-radius:20px;box-shadow:var(--shadow)}.login-card h1{margin:18px 0 24px}.login-card label,.modal-card label{display:grid;gap:7px;margin:15px 0;color:var(--muted)}input,select,textarea{border:1px solid var(--line);border-radius:9px;padding:10px 12px;background:#fff;color:var(--ink)}textarea{resize:vertical}.login-card .primary-button{width:100%;margin-top:8px}.error{padding:10px;border-radius:8px;background:#fff0f0;color:var(--danger)}.admin-header{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:#fff;border-bottom:1px solid var(--line)}.admin-header>div{display:flex;align-items:center;gap:14px}.admin-layout{display:grid;grid-template-columns:210px 1fr;min-height:calc(100vh - 64px)}.admin-nav{padding:18px;background:#172033}.admin-nav button{display:block;width:100%;padding:12px 14px;margin-bottom:5px;text-align:left;background:transparent;color:#aeb9cf}.admin-nav button.active,.admin-nav button:hover{background:#28344c;color:#fff}.admin-content{padding:25px;min-width:0}.admin-section{display:none}.admin-section.active{display:block}.section-title{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.section-title h1{font-size:25px;margin:0}.section-title span{color:var(--muted);font-size:13px}.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}.toolbar button{padding:10px 15px;background:#e8efff;color:var(--primary)}.toolbar-spacer{flex:1}.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}.metric-card{padding:20px;background:#fff;border:1px solid var(--line);border-radius:14px}.metric-card span{display:block;color:var(--muted);font-size:13px}.metric-card strong{display:block;font-size:23px;margin-top:9px}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:14px}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#f8f9fc;white-space:nowrap}td{max-width:360px;word-break:break-word}.table-action{padding:5px 9px;margin:1px;background:#eef2f8}.table-action.danger{color:var(--danger)}.generated-codes{width:100%;height:130px;margin-bottom:14px;font-family:Consolas,monospace}.modal{position:fixed;inset:0;display:grid;place-items:center;background:rgba(18,25,40,.55);z-index:30}.modal-card{width:min(650px,calc(100% - 30px));max-height:90vh;overflow:auto;padding:26px;background:#fff;border-radius:16px;box-shadow:var(--shadow)}.modal-card textarea{min-height:90px}.modal-actions{display:flex;justify-content:flex-end;gap:8px}.toast{position:fixed;right:24px;bottom:24px;max-width:420px;padding:13px 18px;border-radius:10px;background:#172033;color:#fff;box-shadow:var(--shadow);z-index:40}@media(max-width:760px){.hero{padding:30px}.hero h1{font-size:30px}.admin-layout{grid-template-columns:1fr}.admin-nav{display:flex;overflow:auto;padding:9px}.admin-nav button{min-width:120px;margin:0}.admin-content{padding:14px}.admin-header{padding:0 14px}}