:root {
  --color-primary: #3E6AE1;
  --color-white: #FFFFFF;
  --color-light-ash: #F4F4F4;
  --color-carbon: #171A20;
  --color-graphite: #393C41;
  --color-pewter: #5C5E62;
  --color-silver-fog: #8E8E8E;
  --color-cloud: #EEEEEE;
  --rounded-btn: 4px;
  --rounded-card: 12px;
  --font-display: "Universal Sans Display", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --font-text: "Universal Sans Text", system-ui, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  --ease: 0.33s;
}

* { box-sizing: border-box; }
html { background: var(--color-light-ash); }
body {
  margin: 0 auto;
  max-width: 390px;
  min-height: 100vh;
  font-family: var(--font-text);
  color: var(--color-graphite);
  background: var(--color-white);
  line-height: 1.43;
  font-size: 14px;
  padding-bottom: 56px;
}
a { color: var(--color-pewter); text-decoration: none; }

.top {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.75);
}
.logo {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--color-carbon);
  letter-spacing: 0.36em;
  text-transform: uppercase;
  font-size: 13px;
}
.back { font-size: 12px; color: var(--color-pewter); }

.hero {
  min-height: 420px;
  padding: 48px 16px;
  background: #c8ccd0;
  color: var(--color-white);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  margin: 0 0 8px;
  color: var(--color-white);
}
.hero p { margin: 0 0 16px; color: var(--color-white); font-size: 14px; }
.hero .btn { margin: 0 auto 8px; }

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  width: 200px;
  border: 0;
  border-radius: var(--rounded-btn);
  background: var(--color-primary);
  color: var(--color-white);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--ease);
}
.btn-secondary { background: var(--color-white); color: var(--color-graphite); }

.block { padding: 24px 16px; }
.block h2 {
  font-size: 17px;
  font-weight: 500;
  color: var(--color-carbon);
  margin: 0 0 12px;
}

.cell {
  display: block;
  padding: 16px 0;
  color: var(--color-carbon);
  border-bottom: 1px solid var(--color-cloud);
}
.cell h3 { margin: 0 0 4px; font-size: 17px; font-weight: 500; }
.cell p { margin: 0; color: var(--color-pewter); font-size: 14px; }

.row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-cloud);
  font-size: 14px;
}
.row:last-child { border-bottom: 0; }
.row span { color: var(--color-pewter); }

.ph {
  background: var(--color-light-ash);
  color: var(--color-silver-fog);
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-bottom: 12px;
  border-radius: var(--rounded-card);
}

form label { display: block; margin: 0 0 4px; }
form input, form textarea {
  width: 100%;
  padding: 8px 0;
  border: 0;
  border-bottom: 1px solid var(--color-cloud);
  font: inherit;
  margin-bottom: 12px;
}
form button { width: 100%; }

.tab {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 100%;
  max-width: 390px;
  display: flex;
  background: var(--color-white);
  border-top: 1px solid var(--color-cloud);
}
.tab a {
  flex: 1;
  text-align: center;
  padding: 10px 0;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-pewter);
}
.tab a.on { color: var(--color-primary); }

.ph { overflow: hidden; }
.ph img { width: 100%; height: 100%; object-fit: cover; display: block; }