:root{
  --xanh-dam:#006F45; --xanh-sang:#0BA84D; --cam:#FA9D1C;
  --muc:#14231C; --xam:#5F6E66; --nen-xanh:#E9F4EE; --nen-cam:#FEF1DC;
  --duong-ke:#D8E6DE; --do:#C0392B; --trang:#FFFFFF;
  --nen:#F6F9F7;
}
*{box-sizing:border-box}
body{
  margin:0; background:var(--nen); color:var(--muc);
  font-family:"Inter","Segoe UI",system-ui,-apple-system,sans-serif;
  font-size:14px; line-height:1.5;
}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
a{color:var(--xanh-dam);text-decoration:none}
a:hover{text-decoration:underline}

/* Thanh điều hướng */
header{background:var(--xanh-dam);color:#fff;padding:0 20px;
  display:flex;align-items:center;gap:6px;flex-wrap:wrap}
header .logo{font-weight:700;letter-spacing:.04em;margin-right:18px;padding:14px 0}
header nav a{color:rgba(255,255,255,.82);padding:16px 13px;display:block;
  border-bottom:3px solid transparent;font-weight:500}
header nav{display:flex;flex-wrap:wrap}
header nav a:hover{color:#fff;text-decoration:none;background:rgba(255,255,255,.07)}
header nav a.on{color:#fff;border-bottom-color:var(--cam)}
header .cuoi{margin-left:auto;font-size:13px;color:rgba(255,255,255,.75)}
header .cuoi a{color:#fff}

main{max-width:1180px;margin:0 auto;padding:24px 20px 64px}
h1{font-size:21px;margin:0 0 4px;font-weight:650}
.phu{color:var(--xam);font-size:13px;margin:0 0 20px}

.the{background:#fff;border:1px solid var(--duong-ke);border-radius:10px;
  padding:18px;margin-bottom:18px}
.the h2{font-size:14px;margin:0 0 14px;text-transform:uppercase;
  letter-spacing:.06em;color:var(--xam);font-weight:600}

/* Ô số liệu */
.o-so{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-bottom:18px}
.o-so > div{background:#fff;border:1px solid var(--duong-ke);border-radius:10px;padding:16px 18px}
.o-so .nhan{font-size:12px;color:var(--xam);text-transform:uppercase;letter-spacing:.05em}
.o-so .gia-tri{font-size:26px;font-weight:660;margin-top:6px;letter-spacing:-.02em}
.o-so .duoi{font-size:12.5px;color:var(--xam);margin-top:2px}
.o-so .canh-bao{border-left:3px solid var(--cam);background:var(--nen-cam)}

/* Bảng */
table{width:100%;border-collapse:collapse}
th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--xam);font-weight:600;padding:8px 10px;border-bottom:2px solid var(--duong-ke)}
td{padding:9px 10px;border-bottom:1px solid var(--duong-ke)}
tr:last-child td{border-bottom:none}
.phai{text-align:right}
tfoot td{font-weight:650;border-top:2px solid var(--duong-ke);background:var(--nen-xanh)}

/* Nút */
button,.nut{font:inherit;font-weight:600;border-radius:7px;padding:9px 16px;cursor:pointer;
  border:1px solid transparent;background:var(--xanh-sang);color:#fff;display:inline-block}
button:hover,.nut:hover{filter:brightness(.94);text-decoration:none}
.nut-phu{background:#fff;color:var(--muc);border-color:var(--duong-ke)}
.nut-nho{padding:5px 11px;font-size:13px}
button:disabled{opacity:.5;cursor:not-allowed}
:focus-visible{outline:2px solid var(--cam);outline-offset:2px}

input,select{font:inherit;padding:8px 10px;border:1px solid var(--duong-ke);
  border-radius:7px;background:#fff;color:var(--muc);width:100%}
input:focus,select:focus{border-color:var(--xanh-sang);outline:none;
  box-shadow:0 0 0 3px rgba(11,168,77,.14)}

.thanh-ngay{display:flex;align-items:center;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.thanh-ngay .ngay{font-size:17px;font-weight:650;min-width:150px;text-align:center}

/* Lưới nhập */
.luoi-nhap td{padding:6px 10px}
.luoi-nhap input{max-width:130px;text-align:right;font-variant-numeric:tabular-nums}
.luoi-nhap .khach{color:var(--xam);font-size:12.5px}
.luoi-nhap .goi-y{color:var(--xam);font-size:12.5px;white-space:nowrap}
.tong-chay{position:sticky;bottom:0;background:var(--nen-xanh);
  border-top:2px solid var(--xanh-dam);padding:14px 18px;border-radius:0 0 10px 10px;
  display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.tong-chay .so{font-size:22px;font-weight:680}

/* Lịch heatmap */
.lich{display:grid;grid-template-columns:repeat(7,1fr);gap:5px;max-width:400px}
.lich a,.lich span{aspect-ratio:1;display:flex;flex-direction:column;
  align-items:center;justify-content:center;border-radius:6px;font-size:12px;
  border:1px solid var(--duong-ke);color:var(--muc)}
.lich .trong{background:#F0F2F1;color:#B3BCB7;border-style:dashed}
.lich .sau{visibility:hidden}
.lich a:hover{text-decoration:none;outline:2px solid var(--xanh-dam)}
.lich .usd{font-size:9.5px;color:var(--xam);margin-top:1px}

/* Biểu đồ cột đơn giản */
.cot{display:flex;align-items:flex-end;gap:3px;height:120px;margin-top:8px}
.cot > div{flex:1;background:var(--xanh-sang);border-radius:3px 3px 0 0;min-height:2px}
.cot > div.cao{background:var(--cam)}

.bao{padding:11px 14px;border-radius:8px;margin-bottom:14px;font-size:13.5px}
.bao-cam{background:var(--nen-cam);border-left:3px solid var(--cam)}
.bao-xanh{background:var(--nen-xanh);border-left:3px solid var(--xanh-sang)}
.bao-do{background:#FBEAE8;border-left:3px solid var(--do)}
.am{color:var(--do);font-weight:600}

/* Đăng nhập */
.trang-login{display:flex;min-height:100vh;align-items:center;justify-content:center;
  background:var(--xanh-dam)}
.hop-login{background:#fff;padding:34px;border-radius:12px;width:min(370px,92vw)}
.hop-login .logo{font-size:22px;font-weight:700;color:var(--xanh-dam);margin-bottom:4px}
.hop-login label{display:block;font-size:12.5px;color:var(--xam);margin:14px 0 5px;font-weight:600}
.hop-login button{width:100%;margin-top:20px;padding:11px}

@media (max-width:640px){
  main{padding:16px 12px 48px}
  .o-so .gia-tri{font-size:21px}
  th,td{padding:7px 6px;font-size:13px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}