:root{--bg:#f6f7fb;--box:#fff;--text:#192033;--muted:#7e8699;--line:#e5e8f0;--p:#6c5ce7;--p2:#8d72f6;--soft:#f1efff;--shadow:0 24px 70px rgba(42,37,92,.11)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif}.glow{position:fixed;z-index:-1;width:500px;height:500px;left:-220px;top:-220px;border-radius:50%;background:radial-gradient(circle,rgba(108,92,231,.18),transparent 68%)}header{height:70px;padding:0 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(246,247,251,.82);backdrop-filter:blur(15px)}header a{display:flex;align-items:center;gap:10px;color:var(--text);font-size:20px;font-weight:800;text-decoration:none}header b{display:grid;place-items:center;width:35px;height:35px;border-radius:11px;background:linear-gradient(145deg,var(--p2),#5140ce);color:#fff}#theme{width:38px;height:38px;border:1px solid var(--line);border-radius:11px;background:var(--box);color:var(--muted);cursor:pointer}main{width:min(650px,calc(100% - 28px));margin:auto;padding:65px 0 28px}.intro{text-align:center;margin-bottom:32px}.intro em{color:var(--p);font-style:normal;font-size:11px;font-weight:800;letter-spacing:2px}.intro h1{font-size:36px;margin:13px 0 10px}.intro p,.title p,.top p{color:var(--muted);font-size:14px;margin:0}.card,.panel{padding:42px 46px;background:var(--box);border:1px solid var(--line);border-radius:21px;box-shadow:var(--shadow)}.title{display:flex;align-items:center;gap:14px;margin-bottom:30px}.title i{display:grid;place-items:center;width:45px;height:45px;border-radius:14px;background:var(--soft);color:var(--p);font-size:24px}.title h2{font-size:22px;margin:0 0 5px}form label{font-size:13px;font-weight:700}.input{height:53px;margin-top:9px;border:1px solid #dfe2eb;border-radius:13px;display:flex;align-items:center;padding:0 15px;color:#999}.input:focus-within{border-color:var(--p);box-shadow:0 0 0 3px rgba(108,92,231,.1)}.input input{width:100%;height:100%;border:0;outline:0;background:none;color:var(--text);padding:0 10px}.primary{display:flex;align-items:center;justify-content:center;width:100%;height:52px;margin-top:17px;border:0;border-radius:13px;background:linear-gradient(100deg,var(--p),var(--p2));color:#fff;text-decoration:none;font-weight:750;cursor:pointer}.alert,.notice{padding:13px 15px;border-radius:11px;margin-bottom:20px;font-size:13px}.alert{color:#b33845;background:#fff0f1;border:1px solid #ffd9dd}.notice{color:#087c55;background:#eafaf4;border:1px solid #c8f0e2}.success{text-align:center}.success>span{display:grid;place-items:center;width:60px;height:60px;margin:auto;border-radius:50%;background:#e8faf3;color:#17a673;font-size:28px}.success>div,aside{margin-top:22px;padding:18px;border-radius:12px;background:#f7f8fb;color:var(--muted)}.success small,.success strong{display:block}.success strong{color:var(--p);font-size:30px}footer{text-align:center;color:#a3a9b7;font-size:11px;margin-top:25px}footer a,.back{color:var(--muted);text-decoration:none}.admin{padding:38px 18px}.admin-main{width:min(1100px,100%);padding:0}.login{width:min(440px,100%);margin:70px auto}.back{display:block;text-align:center;margin-top:20px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.top h1{margin:0}.top a{color:var(--p);text-decoration:none;margin-left:18px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:20px}.stats div{padding:18px;background:var(--box);border:1px solid var(--line);border-radius:15px}.stats small,.stats strong{display:block}.stats strong{font-size:27px}.panel{padding:24px;margin-bottom:20px;border-radius:17px}.panel h2{font-size:17px}.generate{display:grid;grid-template-columns:1fr 1fr 180px;align-items:end;gap:14px}.generate input{display:block;width:100%;height:45px;margin-top:7px;padding:0 12px;border:1px solid var(--line);border-radius:10px;background:var(--box);color:var(--text)}.generate .primary{height:45px;margin:0}.codes textarea{width:100%;height:120px;margin-top:18px}.table{overflow:auto}table{width:100%;border-collapse:collapse;font-size:12px}th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);white-space:nowrap}.badge{padding:4px 8px;border-radius:12px}.unused{background:#e9faf4;color:#07825a}.used{background:#f0f1f4;color:#858b98}.dark{--bg:#11131a;--box:#1b1e28;--text:#f2f3f7;--muted:#979eaf;--line:#313543;--soft:#292641;--shadow:0 24px 70px rgba(0,0,0,.3)}.dark header{background:#151821}.dark aside,.dark .success>div{background:#222530}@media(max-width:700px){header{padding:0 18px}main{padding-top:44px}.card{padding:30px 21px}.admin{padding:20px 10px}.generate{grid-template-columns:1fr}.stats{gap:7px}.top{align-items:flex-start}}