*{box-sizing:border-box}
:root{--bg:#f5f6f8;--card:#fff;--text:#222;--muted:#777;--line:#e8e8e8;--dark:#111;--ok:#176b35;--okbg:#eaf8ee;--warn:#8a5a00;--warnbg:#fff4db;--bad:#a51f1f;--badbg:#fdecec}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;padding-bottom:72px}
a{color:inherit}
.topbar{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 16px}
.brand{text-decoration:none;font-weight:800}
.top-actions{display:flex;gap:12px;align-items:center;font-size:14px}
.top-actions a{text-decoration:none;color:#555}
.user{color:#666}
.wrap{max-width:920px;margin:0 auto;padding:16px}
h1{font-size:26px;margin:8px 0 6px}
h2{font-size:19px;margin:0 0 14px}
.sub{color:var(--muted);margin-bottom:18px}
.card{background:#fff;border-radius:16px;padding:16px;margin-bottom:14px;box-shadow:0 4px 18px rgba(0,0,0,.045)}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.metric{background:#fff;border-radius:15px;padding:18px}
.metric .n{font-size:28px;font-weight:800;margin-top:4px}
.metric .label{color:#777;font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:11px;padding:12px 16px;background:#111;color:#fff;text-decoration:none;font-weight:700;font-size:15px;cursor:pointer}
.btn.secondary{background:#efefef;color:#222}
.btn.good{background:#1f7a3e}
.btn.warn{background:#b87500}
.btn.bad{background:#b12626}
.btn.block{width:100%}
.input,select,textarea{width:100%;padding:12px;border:1px solid #ddd;border-radius:10px;background:#fff;font-size:16px}
label{display:block;font-size:14px;font-weight:700;margin:10px 0 6px}
.notice{padding:12px 14px;border-radius:11px;margin:12px 0}
.notice.ok{background:var(--okbg);color:var(--ok)}
.notice.warn{background:var(--warnbg);color:var(--warn)}
.notice.bad{background:var(--badbg);color:var(--bad)}
.item-row{display:grid;grid-template-columns:1fr 100px 56px;gap:8px;align-items:center;padding:10px 0;border-bottom:1px solid #eee}
.item-row:last-child{border-bottom:0}
.item-name{font-weight:700}
.unit{color:#777;font-size:14px}
.qty{text-align:center}
.section-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.status{font-size:12px;padding:5px 8px;border-radius:999px;background:#eee}
.status.pending{background:#f1f1f1}
.status.purchased{background:#eaf8ee;color:#176b35}
.status.partial{background:#fff4db;color:#8a5a00}
.status.out_of_stock{background:#fdecec;color:#a51f1f}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{text-align:left;padding:11px;border-bottom:1px solid #eee;white-space:nowrap}
th{font-size:13px;color:#666}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.small{font-size:13px;color:#777}
.bottom-nav{position:fixed;bottom:0;left:0;right:0;height:62px;background:#fff;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(5,1fr);z-index:30}
.bottom-nav a{display:flex;align-items:center;justify-content:center;text-decoration:none;font-size:14px}
.empty{padding:24px;text-align:center;color:#888}
.login-shell{min-height:80vh;display:flex;align-items:center;justify-content:center}
.login-card{width:100%;max-width:420px;background:#fff;border-radius:18px;padding:24px;box-shadow:0 10px 30px rgba(0,0,0,.08)}
.admin-link{margin-top:12px}
@media(min-width:760px){.grid{grid-template-columns:repeat(4,1fr)}.bottom-nav{max-width:700px;left:50%;transform:translateX(-50%);border:1px solid var(--line);border-bottom:0;border-radius:16px 16px 0 0}}