* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
       color: #1c2333; background: #f6f7fb; }
a { color: #5b3df0; }
.wrap { max-width: 880px; margin: 0 auto; padding: 16px; }
.topbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
          justify-content: space-between; padding: 10px 16px;
          background: #141a2e; }
.topbar a { color: #dfe3ff; text-decoration: none; margin-right: 10px; font-size: 15px; }
.topbar .brand { font-weight: 700; color: #fff; font-size: 18px; }
.foot { text-align: center; color: #667; font-size: 13px; padding: 24px 12px; }
.btn { display: inline-block; background: #5b3df0; color: #fff !important;
       padding: 8px 14px; border: 0; border-radius: 8px; text-decoration: none;
       cursor: pointer; font-size: 15px; }
.btn.small { padding: 5px 10px; font-size: 14px; }
.btn.big { padding: 12px 22px; font-size: 17px; width: 100%; }
.linkbtn { background: none; border: 0; color: #dfe3ff; cursor: pointer; font-size: 15px; }
.inline { display: inline; }
.hero { background: linear-gradient(135deg, #2a1a6e, #5b3df0); color: #fff;
        border-radius: 14px; padding: 28px 20px; margin-bottom: 24px; }
.hero h1 { margin-top: 0; font-size: 26px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
         gap: 12px; margin: 12px 0; }
.card { background: #fff; border: 1px solid #e2e5f0; border-radius: 12px; padding: 16px; }
.price { font-size: 26px; font-weight: 700; margin: 6px 0; }
.price span { font-size: 14px; font-weight: 400; color: #667; }
.muted { color: #667; font-size: 14px; }
.tbl { width: 100%; border-collapse: collapse; background: #fff; margin: 10px 0 20px;
       display: block; overflow-x: auto; }
.tbl th, .tbl td { border: 1px solid #e2e5f0; padding: 8px; text-align: left; font-size: 14px; }
.tbl th { background: #eef0fa; }
.form label { display: block; margin: 12px 0; font-size: 15px; }
.form input, .modelform input[type="text"] { width: 100%; padding: 10px; margin-top: 4px;
       border: 1px solid #c7cbe0; border-radius: 8px; font-size: 16px; }
.flash { background: #e5f8e8; border: 1px solid #9ed3a5; padding: 10px 14px;
         border-radius: 8px; margin-bottom: 14px; }
.error { background: #fdeaea; border: 1px solid #e5a3a3; padding: 10px 14px;
         border-radius: 8px; margin-bottom: 14px; }
.notice { background: #fff7e0; border: 1px solid #ecd28a; padding: 14px;
          border-radius: 10px; margin: 14px 0; }
.balance { font-size: 40px; font-weight: 800; margin: 8px 0; }
.balance span { font-size: 18px; font-weight: 400; color: #667; }
.qr { max-width: 260px; width: 100%; }
.center { text-align: center; }
.adjust input { padding: 6px; margin: 2px; border: 1px solid #c7cbe0; border-radius: 6px; }
.adjust button { padding: 6px 10px; border: 0; border-radius: 6px; background: #5b3df0;
                 color: #fff; cursor: pointer; }
.modelform label { display: block; margin: 8px 0; font-size: 14px; }
.modelform label.check { display: flex; gap: 6px; align-items: center; }
details { background: #fff; border: 1px solid #e2e5f0; border-radius: 8px;
          padding: 10px 14px; margin: 8px 0; }
summary { cursor: pointer; font-weight: 600; }