:root {
  --ink: #090d0b;
  --paper: #fbfdf9;
  --cyan: #00a5ad;
  --cyan-soft: #dff6f4;
  --chartreuse: #b7e329;
  --orange: #ef6c21;
  --line: #cbd5cf;
  --muted: #5f6c66;
  font-family: Frutiger, "Frutiger Neue", "Segoe UI", "Microsoft YaHei UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: var(--paper); overflow-x: hidden; }
a { color: inherit; }
.site-header {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(1400px, calc(100% - 64px));
  margin: 0 auto;
  padding: 28px 0;
  border-bottom: 1px solid var(--ink);
}
.brand { display: flex; gap: 14px; align-items: center; text-decoration: none; }
.brand strong { display: block; font-size: 17px; font-weight: 650; }
.brand small { display: block; margin-top: 3px; color: var(--cyan); font-size: 10px; letter-spacing: .13em; }
.brand-mark { width: 22px; height: 22px; border: 5px solid var(--chartreuse); background: var(--ink); }
.text-button {
  display: inline-block;
  padding: 13px 18px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 620;
  text-decoration: none;
  cursor: pointer;
  transition: color .15s ease, background .15s ease, border-color .15s ease;
}
.text-button:hover, .text-button:focus-visible {
  color: white;
  background: var(--orange);
  border-color: var(--orange);
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
.compact { padding: 9px 12px; font-size: 13px; }
main { position: relative; z-index: 2; width: min(1400px, calc(100% - 64px)); margin: 0 auto; }
.hero { max-width: 890px; padding: 108px 0 92px; }
.eyebrow { margin: 0 0 18px; color: var(--cyan); font-size: 12px; font-weight: 720; letter-spacing: .14em; }
h1 { margin: 0; max-width: 760px; font-size: clamp(46px, 6vw, 92px); line-height: .98; letter-spacing: -.045em; font-weight: 620; }
.hero-copy { max-width: 610px; margin: 30px 0 0; color: var(--muted); font-size: 17px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.statistics { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.water-panel { min-width: 0; padding: 28px 32px 34px; border-right: 1px solid var(--ink); }
.water-panel:last-child { border-right: 0; }
.panel-index { color: var(--cyan); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.panel-heading { display: flex; justify-content: space-between; gap: 18px; align-items: end; margin: 44px 0 34px; }
.panel-heading h2 { margin: 0; font-size: 27px; font-weight: 650; }
.total { font-size: 28px; }
.total small { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; font-weight: 400; }
.chart-row { display: grid; grid-template-columns: minmax(135px, 180px) 1fr; gap: 26px; align-items: center; }
.donut {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  background: conic-gradient(var(--chartreuse) calc(var(--positive) * 1%), var(--cyan-soft) 0);
  border-radius: 50%;
  position: relative;
}
.donut::after { content: ""; position: absolute; inset: 18%; border-radius: 50%; background: var(--paper); border: 1px solid var(--ink); }
.donut > div { position: relative; z-index: 1; text-align: center; }
.donut strong { display: block; font-size: clamp(22px, 3vw, 38px); font-weight: 620; }
.donut span { color: var(--muted); font-size: 10px; }
dl { margin: 0; }
dl > div { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
dt { color: var(--muted); font-size: 12px; }
dd { margin: 0; font-size: 18px; font-weight: 650; }
dt i { display: inline-block; width: 8px; height: 8px; margin-right: 7px; }
.positive-dot { background: var(--chartreuse); }
.negative-dot { background: var(--cyan); }
.update-band { display: flex; justify-content: space-between; gap: 24px; padding: 22px 0 80px; color: var(--muted); font-size: 11px; letter-spacing: .09em; }
.message-page { min-height: 72vh; padding: 110px 0; }
.message-page p:not(.eyebrow) { max-width: 600px; margin: 28px 0; color: var(--muted); font-size: 18px; line-height: 1.7; }
.admin-login, .admin-heading { padding: 100px 0 70px; }
.admin-login form { display: grid; gap: 14px; max-width: 470px; margin-top: 42px; }
input[type="password"], input[type="file"] {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: white;
  color: var(--ink);
  font: inherit;
}
input:focus { outline: 3px solid var(--chartreuse); outline-offset: 2px; }
.form-error { color: #a33500; font-weight: 650; }
.admin-metrics { display: flex; flex-wrap: wrap; gap: 1px; margin-top: 42px; background: var(--ink); border: 1px solid var(--ink); }
.admin-metrics span { min-width: 170px; padding: 16px; background: var(--paper); color: var(--muted); font-size: 12px; }
.admin-metrics strong { display: block; margin-top: 7px; color: var(--ink); font-size: 23px; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); }
.admin-grid article { min-height: 320px; padding: 30px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.admin-grid article:nth-child(even) { border-right: 0; }
.admin-grid article:nth-child(n+3) { border-bottom: 0; }
.admin-grid h2, .password-panel h2 { margin: 38px 0 12px; font-size: 28px; }
.admin-grid p { max-width: 520px; min-height: 54px; color: var(--muted); line-height: 1.65; }
.admin-grid form, .password-panel form { display: grid; gap: 12px; align-items: start; }
.danger-panel { background: #fff8f1; }
.password-panel { padding: 70px 0 100px; }
.password-panel form { max-width: 560px; }
.text-button:disabled { color: #8b958f; border-color: var(--line); cursor: not-allowed; }
.text-button:disabled:hover { color: #8b958f; background: transparent; border-color: var(--line); outline: 0; }
footer {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px max(32px, calc((100% - 1400px) / 2));
  color: white;
  background: var(--ink);
  font-size: 10px;
  letter-spacing: .12em;
}
.orbit { position: absolute; z-index: 0; pointer-events: none; border: 1px solid rgba(0,165,173,.22); border-radius: 50%; }
.orbit-a { width: 860px; height: 360px; right: -260px; top: 150px; transform: rotate(-18deg); }
.orbit-b { width: 580px; height: 580px; left: -430px; top: 690px; border-color: rgba(183,227,41,.42); }

@media (max-width: 1050px) {
  .statistics { grid-template-columns: 1fr; }
  .water-panel { border-right: 0; border-bottom: 1px solid var(--ink); }
  .water-panel:last-child { border-bottom: 0; }
  .chart-row { grid-template-columns: 180px 1fr; }
}
@media (max-width: 620px) {
  .site-header, main { width: min(100% - 32px, 1400px); }
  .site-header { align-items: flex-start; }
  .brand small { display: none; }
  .hero { padding: 70px 0 58px; }
  h1 { font-size: 48px; }
  .chart-row { grid-template-columns: 1fr; }
  .donut { max-width: 190px; }
  .update-band, footer { flex-direction: column; }
  .admin-grid { grid-template-columns: 1fr; }
  .admin-grid article { border-right: 0; border-bottom: 1px solid var(--ink); }
  .admin-grid article:nth-child(n+3) { border-bottom: 1px solid var(--ink); }
  .admin-grid article:last-child { border-bottom: 0; }
}