:root{--bg:#f6f8fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--line:#e5e7eb;--brand:#2563eb;--brand2:#0f172a;--danger:#dc2626;--ok:#16a34a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:"Source Han Serif SC","Noto Serif CJK SC","Microsoft YaHei",serif}a{color:var(--brand);text-decoration:none}.top{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;position:sticky;top:0;z-index:10}.brand{font-weight:800;font-size:20px;color:var(--brand2)}.nav a{margin-left:22px;color:#374151}.hero{padding:80px 32px;text-align:center;background:linear-gradient(180deg,#fff,#f7fbff)}.hero h1{font-size:42px;margin:0 0 16px}.hero p{font-size:18px;color:var(--muted)}.btn{display:inline-block;border:0;border-radius:10px;background:var(--brand);color:#fff;padding:10px 18px;cursor:pointer;font-size:14px}.btn.gray{background:#64748b}.btn.red{background:var(--danger)}.btn.light{background:#eef4ff;color:#1d4ed8}.wrap{max-width:1180px;margin:0 auto;padding:24px}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:0 8px 24px rgba(15,23,42,.04)}.card h3{margin-top:0}.muted{color:var(--muted)}.price{font-size:28px;font-weight:800}.layout{display:flex;min-height:100vh}.side{width:240px;background:#0f172a;color:#fff;padding:20px;position:fixed;left:0;top:0;bottom:0}.side .logo{font-weight:800;font-size:20px;margin-bottom:24px}.side a{display:block;color:#cbd5e1;padding:10px 12px;border-radius:10px;margin:4px 0}.side a:hover,.side a.active{background:#1e293b;color:#fff}.main{margin-left:240px;width:calc(100% - 240px);padding:24px}.bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.form{max-width:860px}.field{margin-bottom:14px}.field label{display:block;font-weight:700;margin-bottom:6px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px;background:#fff;font-size:14px}textarea{min-height:110px}table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}th{background:#f8fafc}.tag{padding:4px 8px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:12px}.tag.ok{background:#dcfce7;color:#166534}.tag.bad{background:#fee2e2;color:#991b1b}.alert{padding:12px 14px;border-radius:12px;margin:12px 0}.alert.err{background:#fee2e2;color:#991b1b}.alert.ok{background:#dcfce7;color:#166534}.auth{max-width:420px;margin:80px auto}.qrimg{width:220px;height:220px;border:1px solid var(--line);border-radius:12px;padding:8px;background:#fff}.scan{max-width:680px;margin:30px auto;padding:20px}.scan .title{font-size:26px;font-weight:800}@media(max-width:900px){.grid,.grid3{grid-template-columns:1fr}.side{position:relative;width:100%;height:auto}.main{margin-left:0;width:100%}.layout{display:block}.hero h1{font-size:32px}}

.hero.compact{padding:44px 32px}.grid2{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}.result-card{text-align:center}.qrimg.big{width:280px;height:280px}.copybox{background:#f8fafc;border:1px solid var(--line);border-radius:10px;padding:10px;word-break:break-all;text-align:left;margin:12px 0}.empty-qr{width:220px;height:220px;border:1px dashed #cbd5e1;border-radius:16px;display:flex;align-items:center;justify-content:center;margin:20px auto;color:#94a3b8;font-weight:800;background:#f8fafc}@media(max-width:900px){.grid2{grid-template-columns:1fr}.top{padding:0 16px}.nav a{margin-left:10px}}